{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1260.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0005108066187,
              70.220320393219,
              -4.4455546204779
            ],
            [
              -150.99995160086928,
              70.22466434829595,
              -4.4455546204779
            ],
            [
              -150.9871612767167,
              70.22446091873937,
              28.214445379522104
            ],
            [
              -150.9877228600384,
              70.22011700641785,
              28.214445379522104
            ],
            [
              -151.0005108066187,
              70.220320393219,
              -4.4455546204779
            ]
          ]
        ]
      },
      "bbox": [
        -151.0005108,
        70.22011701,
        -4.44555462,
        -150.9871613,
        70.22466435,
        28.21444538
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:23Z",
        "pc:count": 3255011,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115598.4675,
            "count": 3255011,
            "maximum": 115853.2734,
            "minimum": 115360.7734,
            "name": "X",
            "position": 0,
            "stddev": 135.2622851,
            "variance": 18295.88578
          },
          {
            "average": 2251828.506,
            "count": 3255011,
            "maximum": 2252066.342,
            "minimum": 2251589.922,
            "name": "Y",
            "position": 1,
            "stddev": 130.9401573,
            "variance": 17145.3248
          },
          {
            "average": 9.114371693,
            "count": 3255011,
            "maximum": 28.21444538,
            "minimum": -4.44555462,
            "name": "Z",
            "position": 2,
            "stddev": 5.175514011,
            "variance": 26.78594528
          },
          {
            "average": 37844.24813,
            "count": 3255011,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 19049.40871,
            "variance": 362879972.3
          },
          {
            "average": 1.006917949,
            "count": 3255011,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08518913457,
            "variance": 0.007257188649
          },
          {
            "average": 1.013823609,
            "count": 3255011,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1216323247,
            "variance": 0.01479442241
          },
          {
            "average": 0.5012754181,
            "count": 3255011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999984501,
            "variance": 0.2499984501
          },
          {
            "average": 0.0004580629681,
            "count": 3255011,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02139750656,
            "variance": 0.0004578532871
          },
          {
            "average": 2.776615809,
            "count": 3255011,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.022325225,
            "variance": 9.134449766
          },
          {
            "average": -1.016096843,
            "count": 3255011,
            "maximum": 20.53199959,
            "minimum": -19.96199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.990501022,
            "variance": 99.81011068
          },
          {
            "average": 0.4696423453,
            "count": 3255011,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990776386,
            "variance": 0.2490784893
          },
          {
            "average": 315.7312071,
            "count": 3255011,
            "maximum": 358,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.54580175,
            "variance": 464.2215731
          },
          {
            "average": 216314331.5,
            "count": 3255011,
            "maximum": 216317863.8,
            "minimum": 216313243,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1519.559067,
            "variance": 2309059.758
          },
          {
            "average": 0.4696423453,
            "count": 3255011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990776386,
            "variance": 0.2490784893
          },
          {
            "average": 0,
            "count": 3255011,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3255011,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3255011,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2103584289,
            "count": 3255011,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4075632605,
            "variance": 0.1661078113
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115360.7734,
          2251589.922,
          -4.44555462,
          115853.2734,
          2252066.342,
          28.21444538
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115360.77340517065,
                2251589.9215504494,
                -4.4455546204779
              ],
              [
                115360.77340517065,
                2252066.3415504494,
                -4.4455546204779
              ],
              [
                115853.27340517065,
                2252066.3415504494,
                28.214445379522104
              ],
              [
                115853.27340517065,
                2251589.9215504494,
                28.214445379522104
              ],
              [
                115360.77340517065,
                2251589.9215504494,
                -4.4455546204779
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:23+00:00",
        "end_time": "2018-07-22T16:47:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1260.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1260.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1260.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1260.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0005108,
            70.22011701,
            -4.44555462,
            -150.9871613,
            70.22466435,
            28.21444538
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0005108066187,
                  70.220320393219,
                  -4.4455546204779
                ],
                [
                  -150.99995160086928,
                  70.22466434829595,
                  -4.4455546204779
                ],
                [
                  -150.9871612767167,
                  70.22446091873937,
                  28.214445379522104
                ],
                [
                  -150.9877228600384,
                  70.22011700641785,
                  28.214445379522104
                ],
                [
                  -151.0005108066187,
                  70.220320393219,
                  -4.4455546204779
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1260.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1260.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:23Z",
            "pc:count": 3255011,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115598.4675,
                "count": 3255011,
                "maximum": 115853.2734,
                "minimum": 115360.7734,
                "name": "X",
                "position": 0,
                "stddev": 135.2622851,
                "variance": 18295.88578
              },
              {
                "average": 2251828.506,
                "count": 3255011,
                "maximum": 2252066.342,
                "minimum": 2251589.922,
                "name": "Y",
                "position": 1,
                "stddev": 130.9401573,
                "variance": 17145.3248
              },
              {
                "average": 9.114371693,
                "count": 3255011,
                "maximum": 28.21444538,
                "minimum": -4.44555462,
                "name": "Z",
                "position": 2,
                "stddev": 5.175514011,
                "variance": 26.78594528
              },
              {
                "average": 37844.24813,
                "count": 3255011,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 19049.40871,
                "variance": 362879972.3
              },
              {
                "average": 1.006917949,
                "count": 3255011,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08518913457,
                "variance": 0.007257188649
              },
              {
                "average": 1.013823609,
                "count": 3255011,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1216323247,
                "variance": 0.01479442241
              },
              {
                "average": 0.5012754181,
                "count": 3255011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999984501,
                "variance": 0.2499984501
              },
              {
                "average": 0.0004580629681,
                "count": 3255011,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02139750656,
                "variance": 0.0004578532871
              },
              {
                "average": 2.776615809,
                "count": 3255011,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.022325225,
                "variance": 9.134449766
              },
              {
                "average": -1.016096843,
                "count": 3255011,
                "maximum": 20.53199959,
                "minimum": -19.96199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.990501022,
                "variance": 99.81011068
              },
              {
                "average": 0.4696423453,
                "count": 3255011,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990776386,
                "variance": 0.2490784893
              },
              {
                "average": 315.7312071,
                "count": 3255011,
                "maximum": 358,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.54580175,
                "variance": 464.2215731
              },
              {
                "average": 216314331.5,
                "count": 3255011,
                "maximum": 216317863.8,
                "minimum": 216313243,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1519.559067,
                "variance": 2309059.758
              },
              {
                "average": 0.4696423453,
                "count": 3255011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990776386,
                "variance": 0.2490784893
              },
              {
                "average": 0,
                "count": 3255011,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3255011,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3255011,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2103584289,
                "count": 3255011,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4075632605,
                "variance": 0.1661078113
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115360.7734,
              2251589.922,
              -4.44555462,
              115853.2734,
              2252066.342,
              28.21444538
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115360.77340517065,
                    2251589.9215504494,
                    -4.4455546204779
                  ],
                  [
                    115360.77340517065,
                    2252066.3415504494,
                    -4.4455546204779
                  ],
                  [
                    115853.27340517065,
                    2252066.3415504494,
                    28.214445379522104
                  ],
                  [
                    115853.27340517065,
                    2251589.9215504494,
                    28.214445379522104
                  ],
                  [
                    115360.77340517065,
                    2251589.9215504494,
                    -4.4455546204779
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:23+00:00",
            "end_time": "2018-07-22T16:47:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1311.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.00070974761013,
              70.22441867744209,
              2.110443763367301
            ],
            [
              -151.0001505275867,
              70.22876236640026,
              2.110443763367301
            ],
            [
              -150.9873574338671,
              70.22855893734882,
              12.390443763367301
            ],
            [
              -150.98791903219688,
              70.22421529115294,
              12.390443763367301
            ],
            [
              -151.00070974761013,
              70.22441867744209,
              2.110443763367301
            ]
          ]
        ]
      },
      "bbox": [
        -151.0007097,
        70.22421529,
        2.110443763,
        -150.9873574,
        70.22876237,
        12.39044376
      ],
      "properties": {
        "datetime": "2018-07-22T17:52:56Z",
        "pc:count": 3476030,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115578.8156,
            "count": 3476030,
            "maximum": 115825.3754,
            "minimum": 115332.8554,
            "name": "X",
            "position": 0,
            "stddev": 139.632042,
            "variance": 19497.10715
          },
          {
            "average": 2252273.817,
            "count": 3476030,
            "maximum": 2252514.516,
            "minimum": 2252038.136,
            "name": "Y",
            "position": 1,
            "stddev": 129.0265603,
            "variance": 16647.85326
          },
          {
            "average": 6.880089267,
            "count": 3476030,
            "maximum": 12.39044376,
            "minimum": 2.110443763,
            "name": "Z",
            "position": 2,
            "stddev": 3.683561768,
            "variance": 13.5686273
          },
          {
            "average": 38182.39285,
            "count": 3476030,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 18668.03819,
            "variance": 348495649.9
          },
          {
            "average": 1.000033659,
            "count": 3476030,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005801548487,
            "variance": 3.365796485e-05
          },
          {
            "average": 1.000067318,
            "count": 3476030,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.008204490467,
            "variance": 6.731366382e-05
          },
          {
            "average": 0.504814688,
            "count": 3476030,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999768902,
            "variance": 0.2499768907
          },
          {
            "average": 0.0003426322558,
            "count": 3476030,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01850715963,
            "variance": 0.0003425149574
          },
          {
            "average": 2.771838563,
            "count": 3476030,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.140501967,
            "variance": 9.862752606
          },
          {
            "average": -2.451369477,
            "count": 3476030,
            "maximum": 16.48200035,
            "minimum": -19.87800026,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.720765054,
            "variance": 94.49327323
          },
          {
            "average": 0.4675880243,
            "count": 3476030,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989484296,
            "variance": 0.2489495354
          },
          {
            "average": 314.0382494,
            "count": 3476030,
            "maximum": 356,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.23998397,
            "variance": 409.6569512
          },
          {
            "average": 216314162.3,
            "count": 3476030,
            "maximum": 216317176.4,
            "minimum": 216313232.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1354.524171,
            "variance": 1834735.731
          },
          {
            "average": 0.4675880243,
            "count": 3476030,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989484296,
            "variance": 0.2489495354
          },
          {
            "average": 0,
            "count": 3476030,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3476030,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3476030,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2011196681,
            "count": 3476030,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4008373653,
            "variance": 0.1606705934
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115332.8554,
          2252038.136,
          2.110443763,
          115825.3754,
          2252514.516,
          12.39044376
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115332.85541673946,
                2252038.1362262047,
                2.110443763367301
              ],
              [
                115332.85541673946,
                2252514.5162262046,
                2.110443763367301
              ],
              [
                115825.37541673945,
                2252514.5162262046,
                12.390443763367301
              ],
              [
                115825.37541673945,
                2252038.1362262047,
                12.390443763367301
              ],
              [
                115332.85541673946,
                2252038.1362262047,
                2.110443763367301
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:52:56+00:00",
        "end_time": "2018-07-22T16:47:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1311.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1311.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1311.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1311.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0007097,
            70.22421529,
            2.110443763,
            -150.9873574,
            70.22876237,
            12.39044376
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.00070974761013,
                  70.22441867744209,
                  2.110443763367301
                ],
                [
                  -151.0001505275867,
                  70.22876236640026,
                  2.110443763367301
                ],
                [
                  -150.9873574338671,
                  70.22855893734882,
                  12.390443763367301
                ],
                [
                  -150.98791903219688,
                  70.22421529115294,
                  12.390443763367301
                ],
                [
                  -151.00070974761013,
                  70.22441867744209,
                  2.110443763367301
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1311.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1311.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:52:56Z",
            "pc:count": 3476030,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115578.8156,
                "count": 3476030,
                "maximum": 115825.3754,
                "minimum": 115332.8554,
                "name": "X",
                "position": 0,
                "stddev": 139.632042,
                "variance": 19497.10715
              },
              {
                "average": 2252273.817,
                "count": 3476030,
                "maximum": 2252514.516,
                "minimum": 2252038.136,
                "name": "Y",
                "position": 1,
                "stddev": 129.0265603,
                "variance": 16647.85326
              },
              {
                "average": 6.880089267,
                "count": 3476030,
                "maximum": 12.39044376,
                "minimum": 2.110443763,
                "name": "Z",
                "position": 2,
                "stddev": 3.683561768,
                "variance": 13.5686273
              },
              {
                "average": 38182.39285,
                "count": 3476030,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 18668.03819,
                "variance": 348495649.9
              },
              {
                "average": 1.000033659,
                "count": 3476030,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005801548487,
                "variance": 3.365796485e-05
              },
              {
                "average": 1.000067318,
                "count": 3476030,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.008204490467,
                "variance": 6.731366382e-05
              },
              {
                "average": 0.504814688,
                "count": 3476030,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999768902,
                "variance": 0.2499768907
              },
              {
                "average": 0.0003426322558,
                "count": 3476030,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01850715963,
                "variance": 0.0003425149574
              },
              {
                "average": 2.771838563,
                "count": 3476030,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.140501967,
                "variance": 9.862752606
              },
              {
                "average": -2.451369477,
                "count": 3476030,
                "maximum": 16.48200035,
                "minimum": -19.87800026,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.720765054,
                "variance": 94.49327323
              },
              {
                "average": 0.4675880243,
                "count": 3476030,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989484296,
                "variance": 0.2489495354
              },
              {
                "average": 314.0382494,
                "count": 3476030,
                "maximum": 356,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.23998397,
                "variance": 409.6569512
              },
              {
                "average": 216314162.3,
                "count": 3476030,
                "maximum": 216317176.4,
                "minimum": 216313232.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1354.524171,
                "variance": 1834735.731
              },
              {
                "average": 0.4675880243,
                "count": 3476030,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989484296,
                "variance": 0.2489495354
              },
              {
                "average": 0,
                "count": 3476030,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3476030,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3476030,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2011196681,
                "count": 3476030,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4008373653,
                "variance": 0.1606705934
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115332.8554,
              2252038.136,
              2.110443763,
              115825.3754,
              2252514.516,
              12.39044376
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115332.85541673946,
                    2252038.1362262047,
                    2.110443763367301
                  ],
                  [
                    115332.85541673946,
                    2252514.5162262046,
                    2.110443763367301
                  ],
                  [
                    115825.37541673945,
                    2252514.5162262046,
                    12.390443763367301
                  ],
                  [
                    115825.37541673945,
                    2252038.1362262047,
                    12.390443763367301
                  ],
                  [
                    115332.85541673946,
                    2252038.1362262047,
                    2.110443763367301
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:52:56+00:00",
            "end_time": "2018-07-22T16:47:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1308.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.037014788258,
              70.22421261254766,
              9.448432656110178
            ],
            [
              -151.03646233769908,
              70.22855640326232,
              9.448432656110178
            ],
            [
              -151.02367215838143,
              70.22835547903041,
              10.348432656110177
            ],
            [
              -151.02422698686007,
              70.22401173055205,
              10.348432656110177
            ],
            [
              -151.037014788258,
              70.22421261254766,
              9.448432656110178
            ]
          ]
        ]
      },
      "bbox": [
        -151.0370148,
        70.22401173,
        9.448432656,
        -151.0236722,
        70.2285564,
        10.34843266
      ],
      "properties": {
        "datetime": "2018-07-22T17:53:19Z",
        "pc:count": 4074826,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114193.7443,
            "count": 4074826,
            "maximum": 114431.1429,
            "minimum": 113938.7429,
            "name": "X",
            "position": 0,
            "stddev": 126.5643904,
            "variance": 16018.54492
          },
          {
            "average": 2252200.007,
            "count": 4074826,
            "maximum": 2252429.294,
            "minimum": 2251952.914,
            "name": "Y",
            "position": 1,
            "stddev": 128.9635545,
            "variance": 16631.59839
          },
          {
            "average": 9.70953286,
            "count": 4074826,
            "maximum": 10.34843266,
            "minimum": 9.448432656,
            "name": "Z",
            "position": 2,
            "stddev": 0.05943725354,
            "variance": 0.003532787109
          },
          {
            "average": 31702.36131,
            "count": 4074826,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 12325.05522,
            "variance": 151906986.2
          },
          {
            "average": 1,
            "count": 4074826,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4074826,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5044664484,
            "count": 4074826,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999801118,
            "variance": 0.2499801122
          },
          {
            "average": 0.0004427182903,
            "count": 4074826,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02103621638,
            "variance": 0.0004425223994
          },
          {
            "average": 1.17137198,
            "count": 4074826,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3770199378,
            "variance": 0.1421440335
          },
          {
            "average": -1.62964104,
            "count": 4074826,
            "maximum": 16.45800018,
            "minimum": -19.90200043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4658414,
            "variance": 109.5338363
          },
          {
            "average": 0.5072020253,
            "count": 4074826,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999481895,
            "variance": 0.2499481922
          },
          {
            "average": 318.8039092,
            "count": 4074826,
            "maximum": 356,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.91051782,
            "variance": 396.4287199
          },
          {
            "average": 216314941.8,
            "count": 4074826,
            "maximum": 216317199.5,
            "minimum": 216313945.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1093.831631,
            "variance": 1196467.638
          },
          {
            "average": 0.5072020253,
            "count": 4074826,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999481895,
            "variance": 0.2499481922
          },
          {
            "average": 0,
            "count": 4074826,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4074826,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4074826,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2037871065,
            "count": 4074826,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4028125638,
            "variance": 0.1622579615
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          113938.7429,
          2251952.914,
          9.448432656,
          114431.1429,
          2252429.294,
          10.34843266
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                113938.74286502834,
                2251952.914091256,
                9.448432656110178
              ],
              [
                113938.74286502834,
                2252429.294091256,
                9.448432656110178
              ],
              [
                114431.14286502833,
                2252429.294091256,
                10.348432656110177
              ],
              [
                114431.14286502833,
                2251952.914091256,
                10.348432656110177
              ],
              [
                113938.74286502834,
                2251952.914091256,
                9.448432656110178
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:53:19+00:00",
        "end_time": "2018-07-22T16:59:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1308.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1308.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1308.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1308.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0370148,
            70.22401173,
            9.448432656,
            -151.0236722,
            70.2285564,
            10.34843266
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.037014788258,
                  70.22421261254766,
                  9.448432656110178
                ],
                [
                  -151.03646233769908,
                  70.22855640326232,
                  9.448432656110178
                ],
                [
                  -151.02367215838143,
                  70.22835547903041,
                  10.348432656110177
                ],
                [
                  -151.02422698686007,
                  70.22401173055205,
                  10.348432656110177
                ],
                [
                  -151.037014788258,
                  70.22421261254766,
                  9.448432656110178
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1308.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1308.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:53:19Z",
            "pc:count": 4074826,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114193.7443,
                "count": 4074826,
                "maximum": 114431.1429,
                "minimum": 113938.7429,
                "name": "X",
                "position": 0,
                "stddev": 126.5643904,
                "variance": 16018.54492
              },
              {
                "average": 2252200.007,
                "count": 4074826,
                "maximum": 2252429.294,
                "minimum": 2251952.914,
                "name": "Y",
                "position": 1,
                "stddev": 128.9635545,
                "variance": 16631.59839
              },
              {
                "average": 9.70953286,
                "count": 4074826,
                "maximum": 10.34843266,
                "minimum": 9.448432656,
                "name": "Z",
                "position": 2,
                "stddev": 0.05943725354,
                "variance": 0.003532787109
              },
              {
                "average": 31702.36131,
                "count": 4074826,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 12325.05522,
                "variance": 151906986.2
              },
              {
                "average": 1,
                "count": 4074826,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4074826,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5044664484,
                "count": 4074826,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999801118,
                "variance": 0.2499801122
              },
              {
                "average": 0.0004427182903,
                "count": 4074826,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02103621638,
                "variance": 0.0004425223994
              },
              {
                "average": 1.17137198,
                "count": 4074826,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3770199378,
                "variance": 0.1421440335
              },
              {
                "average": -1.62964104,
                "count": 4074826,
                "maximum": 16.45800018,
                "minimum": -19.90200043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4658414,
                "variance": 109.5338363
              },
              {
                "average": 0.5072020253,
                "count": 4074826,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999481895,
                "variance": 0.2499481922
              },
              {
                "average": 318.8039092,
                "count": 4074826,
                "maximum": 356,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.91051782,
                "variance": 396.4287199
              },
              {
                "average": 216314941.8,
                "count": 4074826,
                "maximum": 216317199.5,
                "minimum": 216313945.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1093.831631,
                "variance": 1196467.638
              },
              {
                "average": 0.5072020253,
                "count": 4074826,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999481895,
                "variance": 0.2499481922
              },
              {
                "average": 0,
                "count": 4074826,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4074826,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4074826,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2037871065,
                "count": 4074826,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4028125638,
                "variance": 0.1622579615
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              113938.7429,
              2251952.914,
              9.448432656,
              114431.1429,
              2252429.294,
              10.34843266
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    113938.74286502834,
                    2251952.914091256,
                    9.448432656110178
                  ],
                  [
                    113938.74286502834,
                    2252429.294091256,
                    9.448432656110178
                  ],
                  [
                    114431.14286502833,
                    2252429.294091256,
                    10.348432656110177
                  ],
                  [
                    114431.14286502833,
                    2251952.914091256,
                    10.348432656110177
                  ],
                  [
                    113938.74286502834,
                    2251952.914091256,
                    9.448432656110178
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:53:19+00:00",
            "end_time": "2018-07-22T16:59:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1210.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.98821296275068,
              70.21628953535826,
              -2.852588354741442
            ],
            [
              -150.9876514921796,
              70.22063390473119,
              -2.852588354741442
            ],
            [
              -150.97486348631142,
              70.22042964807564,
              1270.2074116452586
            ],
            [
              -150.9754273338522,
              70.21608532162654,
              1270.2074116452586
            ],
            [
              -150.98821296275068,
              70.21628953535826,
              -2.852588354741442
            ]
          ]
        ]
      },
      "bbox": [
        -150.988213,
        70.21608532,
        -2.852588355,
        -150.9748635,
        70.2206339,
        1270.207412
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:15Z",
        "pc:count": 4163606,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116092.117,
            "count": 4163606,
            "maximum": 116345.9484,
            "minimum": 115853.4484,
            "name": "X",
            "position": 0,
            "stddev": 132.115443,
            "variance": 17454.49028
          },
          {
            "average": 2251393.483,
            "count": 4163606,
            "maximum": 2251646.621,
            "minimum": 2251170.141,
            "name": "Y",
            "position": 1,
            "stddev": 126.618229,
            "variance": 16032.17592
          },
          {
            "average": 3.935593803,
            "count": 4163606,
            "maximum": 1270.207412,
            "minimum": -2.852588355,
            "name": "Z",
            "position": 2,
            "stddev": 2.227905806,
            "variance": 4.963564281
          },
          {
            "average": 27810.30065,
            "count": 4163606,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 17341.27858,
            "variance": 300719942.7
          },
          {
            "average": 1.000281006,
            "count": 4163606,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01676089255,
            "variance": 0.0002809275189
          },
          {
            "average": 1.000562013,
            "count": 4163606,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02370014997,
            "variance": 0.0005616971086
          },
          {
            "average": 0.4989991848,
            "count": 4163606,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999990584,
            "variance": 0.2499990584
          },
          {
            "average": 0.0005569691272,
            "count": 4163606,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.023593623,
            "variance": 0.0005566590463
          },
          {
            "average": 3.625641331,
            "count": 4163606,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.621349332,
            "variance": 13.11417098
          },
          {
            "average": 1.065504415,
            "count": 4163606,
            "maximum": 20.47800064,
            "minimum": -20.01000023,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63084803,
            "variance": 113.0149299
          },
          {
            "average": 0.4887991323,
            "count": 4163606,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998745848,
            "variance": 0.2498746006
          },
          {
            "average": 320.2665564,
            "count": 4163606,
            "maximum": 358,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.21540144,
            "variance": 635.8164696
          },
          {
            "average": 216314614.8,
            "count": 4163606,
            "maximum": 216317855.9,
            "minimum": 216312802.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1989.553118,
            "variance": 3958321.608
          },
          {
            "average": 0.4887991323,
            "count": 4163606,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998745848,
            "variance": 0.2498746006
          },
          {
            "average": 0,
            "count": 4163606,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4163606,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4163606,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1702982943,
            "count": 4163606,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3758946916,
            "variance": 0.1412968192
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115853.4484,
          2251170.141,
          -2.852588355,
          116345.9484,
          2251646.621,
          1270.207412
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115853.44840047683,
                2251170.1410719184,
                -2.852588354741442
              ],
              [
                115853.44840047683,
                2251646.621071919,
                -2.852588354741442
              ],
              [
                116345.94840047683,
                2251646.621071919,
                1270.2074116452586
              ],
              [
                116345.94840047683,
                2251170.1410719184,
                1270.2074116452586
              ],
              [
                115853.44840047683,
                2251170.1410719184,
                -2.852588354741442
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:15+00:00",
        "end_time": "2018-07-22T16:40:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1210.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1210.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1210.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1210.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.988213,
            70.21608532,
            -2.852588355,
            -150.9748635,
            70.2206339,
            1270.207412
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.98821296275068,
                  70.21628953535826,
                  -2.852588354741442
                ],
                [
                  -150.9876514921796,
                  70.22063390473119,
                  -2.852588354741442
                ],
                [
                  -150.97486348631142,
                  70.22042964807564,
                  1270.2074116452586
                ],
                [
                  -150.9754273338522,
                  70.21608532162654,
                  1270.2074116452586
                ],
                [
                  -150.98821296275068,
                  70.21628953535826,
                  -2.852588354741442
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1210.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1210.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:15Z",
            "pc:count": 4163606,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116092.117,
                "count": 4163606,
                "maximum": 116345.9484,
                "minimum": 115853.4484,
                "name": "X",
                "position": 0,
                "stddev": 132.115443,
                "variance": 17454.49028
              },
              {
                "average": 2251393.483,
                "count": 4163606,
                "maximum": 2251646.621,
                "minimum": 2251170.141,
                "name": "Y",
                "position": 1,
                "stddev": 126.618229,
                "variance": 16032.17592
              },
              {
                "average": 3.935593803,
                "count": 4163606,
                "maximum": 1270.207412,
                "minimum": -2.852588355,
                "name": "Z",
                "position": 2,
                "stddev": 2.227905806,
                "variance": 4.963564281
              },
              {
                "average": 27810.30065,
                "count": 4163606,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 17341.27858,
                "variance": 300719942.7
              },
              {
                "average": 1.000281006,
                "count": 4163606,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01676089255,
                "variance": 0.0002809275189
              },
              {
                "average": 1.000562013,
                "count": 4163606,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02370014997,
                "variance": 0.0005616971086
              },
              {
                "average": 0.4989991848,
                "count": 4163606,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999990584,
                "variance": 0.2499990584
              },
              {
                "average": 0.0005569691272,
                "count": 4163606,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.023593623,
                "variance": 0.0005566590463
              },
              {
                "average": 3.625641331,
                "count": 4163606,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.621349332,
                "variance": 13.11417098
              },
              {
                "average": 1.065504415,
                "count": 4163606,
                "maximum": 20.47800064,
                "minimum": -20.01000023,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63084803,
                "variance": 113.0149299
              },
              {
                "average": 0.4887991323,
                "count": 4163606,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998745848,
                "variance": 0.2498746006
              },
              {
                "average": 320.2665564,
                "count": 4163606,
                "maximum": 358,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.21540144,
                "variance": 635.8164696
              },
              {
                "average": 216314614.8,
                "count": 4163606,
                "maximum": 216317855.9,
                "minimum": 216312802.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1989.553118,
                "variance": 3958321.608
              },
              {
                "average": 0.4887991323,
                "count": 4163606,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998745848,
                "variance": 0.2498746006
              },
              {
                "average": 0,
                "count": 4163606,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4163606,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4163606,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1702982943,
                "count": 4163606,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3758946916,
                "variance": 0.1412968192
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115853.4484,
              2251170.141,
              -2.852588355,
              116345.9484,
              2251646.621,
              1270.207412
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115853.44840047683,
                    2251170.1410719184,
                    -2.852588354741442
                  ],
                  [
                    115853.44840047683,
                    2251646.621071919,
                    -2.852588354741442
                  ],
                  [
                    116345.94840047683,
                    2251646.621071919,
                    1270.2074116452586
                  ],
                  [
                    116345.94840047683,
                    2251170.1410719184,
                    1270.2074116452586
                  ],
                  [
                    115853.44840047683,
                    2251170.1410719184,
                    -2.852588354741442
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:15+00:00",
            "end_time": "2018-07-22T16:40:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1361.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01301238295514,
              70.22844854171476,
              -7.18987854319829
            ],
            [
              -151.0124554290983,
              70.23279181631716,
              -7.18987854319829
            ],
            [
              -150.9996615752053,
              70.23258923951333,
              617.0301214568017
            ],
            [
              -151.0002209076813,
              70.22824600749954,
              617.0301214568017
            ],
            [
              -151.01301238295514,
              70.22844854171476,
              -7.18987854319829
            ]
          ]
        ]
      },
      "bbox": [
        -151.0130124,
        70.22824601,
        -7.189878543,
        -150.9996616,
        70.23279182,
        617.0301215
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:03Z",
        "pc:count": 4669859,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115089.5166,
            "count": 4669859,
            "maximum": 115332.7059,
            "minimum": 114840.2459,
            "name": "X",
            "position": 0,
            "stddev": 136.0333733,
            "variance": 18505.07865
          },
          {
            "average": 2252692.153,
            "count": 4669859,
            "maximum": 2252934.2,
            "minimum": 2252457.88,
            "name": "Y",
            "position": 1,
            "stddev": 127.0817769,
            "variance": 16149.77802
          },
          {
            "average": 10.61920919,
            "count": 4669859,
            "maximum": 617.0301215,
            "minimum": -7.189878543,
            "name": "Z",
            "position": 2,
            "stddev": 4.271145571,
            "variance": 18.24268449
          },
          {
            "average": 52167.6925,
            "count": 4669859,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8062.266546,
            "variance": 65000141.85
          },
          {
            "average": 1.000131267,
            "count": 4669859,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01147512188,
            "variance": 0.0001316784222
          },
          {
            "average": 1.000266389,
            "count": 4669859,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01635857967,
            "variance": 0.0002676031288
          },
          {
            "average": 0.4975903983,
            "count": 4669859,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999942473,
            "variance": 0.2499942474
          },
          {
            "average": 0.0004167149372,
            "count": 4669859,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02040934529,
            "variance": 0.0004165413751
          },
          {
            "average": 1.16088944,
            "count": 4669859,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4962158172,
            "variance": 0.2462301372
          },
          {
            "average": 3.604307822,
            "count": 4669859,
            "maximum": 20.49600029,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.087483,
            "variance": 122.9322793
          },
          {
            "average": 0.5283771951,
            "count": 4669859,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991941387,
            "variance": 0.2491947882
          },
          {
            "average": 317.3771289,
            "count": 4669859,
            "maximum": 355,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.06885059,
            "variance": 443.8964651
          },
          {
            "average": 216314493.9,
            "count": 4669859,
            "maximum": 216316763,
            "minimum": 216313505.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1235.430571,
            "variance": 1526288.695
          },
          {
            "average": 0.5283771951,
            "count": 4669859,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991941387,
            "variance": 0.2491947882
          },
          {
            "average": 0,
            "count": 4669859,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4669859,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4669859,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2291846499,
            "count": 4669859,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4203083201,
            "variance": 0.176659084
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114840.2459,
          2252457.88,
          -7.189878543,
          115332.7059,
          2252934.2,
          617.0301215
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114840.24587408251,
                2252457.8800663594,
                -7.18987854319829
              ],
              [
                114840.24587408251,
                2252934.2000663597,
                -7.18987854319829
              ],
              [
                115332.7058740825,
                2252934.2000663597,
                617.0301214568017
              ],
              [
                115332.7058740825,
                2252457.8800663594,
                617.0301214568017
              ],
              [
                114840.24587408251,
                2252457.8800663594,
                -7.18987854319829
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:03+00:00",
        "end_time": "2018-07-22T16:51:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1361.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1361.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1361.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1361.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0130124,
            70.22824601,
            -7.189878543,
            -150.9996616,
            70.23279182,
            617.0301215
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01301238295514,
                  70.22844854171476,
                  -7.18987854319829
                ],
                [
                  -151.0124554290983,
                  70.23279181631716,
                  -7.18987854319829
                ],
                [
                  -150.9996615752053,
                  70.23258923951333,
                  617.0301214568017
                ],
                [
                  -151.0002209076813,
                  70.22824600749954,
                  617.0301214568017
                ],
                [
                  -151.01301238295514,
                  70.22844854171476,
                  -7.18987854319829
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1361.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1361.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:03Z",
            "pc:count": 4669859,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115089.5166,
                "count": 4669859,
                "maximum": 115332.7059,
                "minimum": 114840.2459,
                "name": "X",
                "position": 0,
                "stddev": 136.0333733,
                "variance": 18505.07865
              },
              {
                "average": 2252692.153,
                "count": 4669859,
                "maximum": 2252934.2,
                "minimum": 2252457.88,
                "name": "Y",
                "position": 1,
                "stddev": 127.0817769,
                "variance": 16149.77802
              },
              {
                "average": 10.61920919,
                "count": 4669859,
                "maximum": 617.0301215,
                "minimum": -7.189878543,
                "name": "Z",
                "position": 2,
                "stddev": 4.271145571,
                "variance": 18.24268449
              },
              {
                "average": 52167.6925,
                "count": 4669859,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8062.266546,
                "variance": 65000141.85
              },
              {
                "average": 1.000131267,
                "count": 4669859,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01147512188,
                "variance": 0.0001316784222
              },
              {
                "average": 1.000266389,
                "count": 4669859,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01635857967,
                "variance": 0.0002676031288
              },
              {
                "average": 0.4975903983,
                "count": 4669859,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999942473,
                "variance": 0.2499942474
              },
              {
                "average": 0.0004167149372,
                "count": 4669859,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02040934529,
                "variance": 0.0004165413751
              },
              {
                "average": 1.16088944,
                "count": 4669859,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4962158172,
                "variance": 0.2462301372
              },
              {
                "average": 3.604307822,
                "count": 4669859,
                "maximum": 20.49600029,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.087483,
                "variance": 122.9322793
              },
              {
                "average": 0.5283771951,
                "count": 4669859,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991941387,
                "variance": 0.2491947882
              },
              {
                "average": 317.3771289,
                "count": 4669859,
                "maximum": 355,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.06885059,
                "variance": 443.8964651
              },
              {
                "average": 216314493.9,
                "count": 4669859,
                "maximum": 216316763,
                "minimum": 216313505.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1235.430571,
                "variance": 1526288.695
              },
              {
                "average": 0.5283771951,
                "count": 4669859,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991941387,
                "variance": 0.2491947882
              },
              {
                "average": 0,
                "count": 4669859,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4669859,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4669859,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2291846499,
                "count": 4669859,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4203083201,
                "variance": 0.176659084
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114840.2459,
              2252457.88,
              -7.189878543,
              115332.7059,
              2252934.2,
              617.0301215
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114840.24587408251,
                    2252457.8800663594,
                    -7.18987854319829
                  ],
                  [
                    114840.24587408251,
                    2252934.2000663597,
                    -7.18987854319829
                  ],
                  [
                    115332.7058740825,
                    2252934.2000663597,
                    617.0301214568017
                  ],
                  [
                    115332.7058740825,
                    2252457.8800663594,
                    617.0301214568017
                  ],
                  [
                    114840.24587408251,
                    2252457.8800663594,
                    -7.18987854319829
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:03+00:00",
            "end_time": "2018-07-22T16:51:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0968.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02349016317675,
              70.19559707153205,
              10.733935881971572
            ],
            [
              -151.0229356868589,
              70.19994159868078,
              10.733935881971572
            ],
            [
              -151.01016234294678,
              70.19973980864405,
              13.053935881971572
            ],
            [
              -151.01071919187473,
              70.19539532385402,
              13.053935881971572
            ],
            [
              -151.02349016317675,
              70.19559707153205,
              10.733935881971572
            ]
          ]
        ]
      },
      "bbox": [
        -151.0234902,
        70.19539532,
        10.73393588,
        -151.0101623,
        70.1999416,
        13.05393588
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:37Z",
        "pc:count": 5390440,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114833.7633,
            "count": 5390440,
            "maximum": 115091.312,
            "minimum": 114598.952,
            "name": "X",
            "position": 0,
            "stddev": 136.3044792,
            "variance": 18578.91104
          },
          {
            "average": 2249114.354,
            "count": 5390440,
            "maximum": 2249320.456,
            "minimum": 2248843.916,
            "name": "Y",
            "position": 1,
            "stddev": 129.4393105,
            "variance": 16754.53511
          },
          {
            "average": 11.54284092,
            "count": 5390440,
            "maximum": 13.05393588,
            "minimum": 10.73393588,
            "name": "Z",
            "position": 2,
            "stddev": 0.3306128847,
            "variance": 0.1093048795
          },
          {
            "average": 48704.41826,
            "count": 5390440,
            "maximum": 65535,
            "minimum": 1547,
            "name": "Intensity",
            "position": 3,
            "stddev": 11097.88794,
            "variance": 123163116.6
          },
          {
            "average": 1,
            "count": 5390440,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5390440,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5026387456,
            "count": 5390440,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999930834,
            "variance": 0.2499930834
          },
          {
            "average": 0.0005294558515,
            "count": 5390440,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02300381764,
            "variance": 0.0005291756261
          },
          {
            "average": 1.156408382,
            "count": 5390440,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3637626596,
            "variance": 0.1323232725
          },
          {
            "average": -1.56959244,
            "count": 5390440,
            "maximum": 20.52000046,
            "minimum": -19.99799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.839927,
            "variance": 117.5040175
          },
          {
            "average": 0.4610827688,
            "count": 5390440,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984831945,
            "variance": 0.2484854952
          },
          {
            "average": 322.9463667,
            "count": 5390440,
            "maximum": 364,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.87974824,
            "variance": 619.0018726
          },
          {
            "average": 216316006,
            "count": 5390440,
            "maximum": 216321537.6,
            "minimum": 216313733.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2928.096757,
            "variance": 8573750.619
          },
          {
            "average": 0.4610827688,
            "count": 5390440,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984831945,
            "variance": 0.2484854952
          },
          {
            "average": 0,
            "count": 5390440,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5390440,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5390440,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.249795935,
            "count": 5390440,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4328948609,
            "variance": 0.1873979606
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114598.952,
          2248843.916,
          10.73393588,
          115091.312,
          2249320.456,
          13.05393588
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114598.95196270381,
                2248843.91566636,
                10.733935881971572
              ],
              [
                114598.95196270381,
                2249320.45566636,
                10.733935881971572
              ],
              [
                115091.3119627038,
                2249320.45566636,
                13.053935881971572
              ],
              [
                115091.3119627038,
                2248843.91566636,
                13.053935881971572
              ],
              [
                114598.95196270381,
                2248843.91566636,
                10.733935881971572
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:37+00:00",
        "end_time": "2018-07-22T16:55:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0968.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0968.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0968.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0968.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0234902,
            70.19539532,
            10.73393588,
            -151.0101623,
            70.1999416,
            13.05393588
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02349016317675,
                  70.19559707153205,
                  10.733935881971572
                ],
                [
                  -151.0229356868589,
                  70.19994159868078,
                  10.733935881971572
                ],
                [
                  -151.01016234294678,
                  70.19973980864405,
                  13.053935881971572
                ],
                [
                  -151.01071919187473,
                  70.19539532385402,
                  13.053935881971572
                ],
                [
                  -151.02349016317675,
                  70.19559707153205,
                  10.733935881971572
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0968.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0968.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:37Z",
            "pc:count": 5390440,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114833.7633,
                "count": 5390440,
                "maximum": 115091.312,
                "minimum": 114598.952,
                "name": "X",
                "position": 0,
                "stddev": 136.3044792,
                "variance": 18578.91104
              },
              {
                "average": 2249114.354,
                "count": 5390440,
                "maximum": 2249320.456,
                "minimum": 2248843.916,
                "name": "Y",
                "position": 1,
                "stddev": 129.4393105,
                "variance": 16754.53511
              },
              {
                "average": 11.54284092,
                "count": 5390440,
                "maximum": 13.05393588,
                "minimum": 10.73393588,
                "name": "Z",
                "position": 2,
                "stddev": 0.3306128847,
                "variance": 0.1093048795
              },
              {
                "average": 48704.41826,
                "count": 5390440,
                "maximum": 65535,
                "minimum": 1547,
                "name": "Intensity",
                "position": 3,
                "stddev": 11097.88794,
                "variance": 123163116.6
              },
              {
                "average": 1,
                "count": 5390440,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5390440,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5026387456,
                "count": 5390440,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999930834,
                "variance": 0.2499930834
              },
              {
                "average": 0.0005294558515,
                "count": 5390440,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02300381764,
                "variance": 0.0005291756261
              },
              {
                "average": 1.156408382,
                "count": 5390440,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3637626596,
                "variance": 0.1323232725
              },
              {
                "average": -1.56959244,
                "count": 5390440,
                "maximum": 20.52000046,
                "minimum": -19.99799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.839927,
                "variance": 117.5040175
              },
              {
                "average": 0.4610827688,
                "count": 5390440,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984831945,
                "variance": 0.2484854952
              },
              {
                "average": 322.9463667,
                "count": 5390440,
                "maximum": 364,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.87974824,
                "variance": 619.0018726
              },
              {
                "average": 216316006,
                "count": 5390440,
                "maximum": 216321537.6,
                "minimum": 216313733.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2928.096757,
                "variance": 8573750.619
              },
              {
                "average": 0.4610827688,
                "count": 5390440,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984831945,
                "variance": 0.2484854952
              },
              {
                "average": 0,
                "count": 5390440,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5390440,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5390440,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.249795935,
                "count": 5390440,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4328948609,
                "variance": 0.1873979606
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114598.952,
              2248843.916,
              10.73393588,
              115091.312,
              2249320.456,
              13.05393588
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114598.95196270381,
                    2248843.91566636,
                    10.733935881971572
                  ],
                  [
                    114598.95196270381,
                    2249320.45566636,
                    10.733935881971572
                  ],
                  [
                    115091.3119627038,
                    2249320.45566636,
                    13.053935881971572
                  ],
                  [
                    115091.3119627038,
                    2248843.91566636,
                    13.053935881971572
                  ],
                  [
                    114598.95196270381,
                    2248843.91566636,
                    10.733935881971572
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:37+00:00",
            "end_time": "2018-07-22T16:55:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1105.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02410173472478,
              70.20789074402815,
              9.233434656846157
            ],
            [
              -151.02354712665118,
              70.21223520118278,
              9.233434656846157
            ],
            [
              -151.01076289259018,
              70.21203337293255,
              1263.8534346568463
            ],
            [
              -151.01131987635142,
              70.20768895817264,
              1263.8534346568463
            ],
            [
              -151.02410173472478,
              70.20789074402815,
              9.233434656846157
            ]
          ]
        ]
      },
      "bbox": [
        -151.0241017,
        70.20768896,
        9.233434657,
        -151.0107629,
        70.2122352,
        1263.853435
      ],
      "properties": {
        "datetime": "2018-07-22T18:43:58Z",
        "pc:count": 4313147,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114752.4496,
            "count": 4313147,
            "maximum": 115007.5988,
            "minimum": 114515.0788,
            "name": "X",
            "position": 0,
            "stddev": 138.0893872,
            "variance": 19068.67884
          },
          {
            "average": 2250442.847,
            "count": 4313147,
            "maximum": 2250665.086,
            "minimum": 2250188.586,
            "name": "Y",
            "position": 1,
            "stddev": 133.9891394,
            "variance": 17953.08947
          },
          {
            "average": 11.32516132,
            "count": 4313147,
            "maximum": 1263.853435,
            "minimum": 9.233434657,
            "name": "Z",
            "position": 2,
            "stddev": 2.579554876,
            "variance": 6.654103358
          },
          {
            "average": 43768.45516,
            "count": 4313147,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12587.71761,
            "variance": 158450634.7
          },
          {
            "average": 1.000006028,
            "count": 4313147,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002455207971,
            "variance": 6.02804618e-06
          },
          {
            "average": 1.000012056,
            "count": 4313147,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003472177945,
            "variance": 1.205601968e-05
          },
          {
            "average": 0.4996177965,
            "count": 4313147,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999119,
            "variance": 0.2499999119
          },
          {
            "average": 0.0005566701065,
            "count": 4313147,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02358729221,
            "variance": 0.0005563603539
          },
          {
            "average": 1.197035714,
            "count": 4313147,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4026272151,
            "variance": 0.1621086744
          },
          {
            "average": 0.2327331216,
            "count": 4313147,
            "maximum": 20.55599976,
            "minimum": -19.90800095,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.44810541,
            "variance": 131.0591175
          },
          {
            "average": 0.4743582818,
            "count": 4313147,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993421273,
            "variance": 0.2493425601
          },
          {
            "average": 320.5718894,
            "count": 4313147,
            "maximum": 361,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.95158033,
            "variance": 526.7750399
          },
          {
            "average": 216315140.8,
            "count": 4313147,
            "maximum": 216320238.3,
            "minimum": 216313711.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1793.876218,
            "variance": 3217991.887
          },
          {
            "average": 0.4743582818,
            "count": 4313147,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993421273,
            "variance": 0.2493425601
          },
          {
            "average": 0,
            "count": 4313147,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4313147,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4313147,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2726681933,
            "count": 4313147,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4453316693,
            "variance": 0.1983202957
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114515.0788,
          2250188.586,
          9.233434657,
          115007.5988,
          2250665.086,
          1263.853435
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114515.07881006935,
                2250188.5857674954,
                9.233434656846157
              ],
              [
                114515.07881006935,
                2250665.0857674954,
                9.233434656846157
              ],
              [
                115007.59881006934,
                2250665.0857674954,
                1263.8534346568463
              ],
              [
                115007.59881006934,
                2250188.5857674954,
                1263.8534346568463
              ],
              [
                114515.07881006935,
                2250188.5857674954,
                9.233434656846157
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:43:58+00:00",
        "end_time": "2018-07-22T16:55:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1105.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1105.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1105.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1105.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0241017,
            70.20768896,
            9.233434657,
            -151.0107629,
            70.2122352,
            1263.853435
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02410173472478,
                  70.20789074402815,
                  9.233434656846157
                ],
                [
                  -151.02354712665118,
                  70.21223520118278,
                  9.233434656846157
                ],
                [
                  -151.01076289259018,
                  70.21203337293255,
                  1263.8534346568463
                ],
                [
                  -151.01131987635142,
                  70.20768895817264,
                  1263.8534346568463
                ],
                [
                  -151.02410173472478,
                  70.20789074402815,
                  9.233434656846157
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1105.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1105.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:43:58Z",
            "pc:count": 4313147,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114752.4496,
                "count": 4313147,
                "maximum": 115007.5988,
                "minimum": 114515.0788,
                "name": "X",
                "position": 0,
                "stddev": 138.0893872,
                "variance": 19068.67884
              },
              {
                "average": 2250442.847,
                "count": 4313147,
                "maximum": 2250665.086,
                "minimum": 2250188.586,
                "name": "Y",
                "position": 1,
                "stddev": 133.9891394,
                "variance": 17953.08947
              },
              {
                "average": 11.32516132,
                "count": 4313147,
                "maximum": 1263.853435,
                "minimum": 9.233434657,
                "name": "Z",
                "position": 2,
                "stddev": 2.579554876,
                "variance": 6.654103358
              },
              {
                "average": 43768.45516,
                "count": 4313147,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12587.71761,
                "variance": 158450634.7
              },
              {
                "average": 1.000006028,
                "count": 4313147,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002455207971,
                "variance": 6.02804618e-06
              },
              {
                "average": 1.000012056,
                "count": 4313147,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003472177945,
                "variance": 1.205601968e-05
              },
              {
                "average": 0.4996177965,
                "count": 4313147,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999119,
                "variance": 0.2499999119
              },
              {
                "average": 0.0005566701065,
                "count": 4313147,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02358729221,
                "variance": 0.0005563603539
              },
              {
                "average": 1.197035714,
                "count": 4313147,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4026272151,
                "variance": 0.1621086744
              },
              {
                "average": 0.2327331216,
                "count": 4313147,
                "maximum": 20.55599976,
                "minimum": -19.90800095,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.44810541,
                "variance": 131.0591175
              },
              {
                "average": 0.4743582818,
                "count": 4313147,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993421273,
                "variance": 0.2493425601
              },
              {
                "average": 320.5718894,
                "count": 4313147,
                "maximum": 361,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.95158033,
                "variance": 526.7750399
              },
              {
                "average": 216315140.8,
                "count": 4313147,
                "maximum": 216320238.3,
                "minimum": 216313711.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1793.876218,
                "variance": 3217991.887
              },
              {
                "average": 0.4743582818,
                "count": 4313147,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993421273,
                "variance": 0.2493425601
              },
              {
                "average": 0,
                "count": 4313147,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4313147,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4313147,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2726681933,
                "count": 4313147,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4453316693,
                "variance": 0.1983202957
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114515.0788,
              2250188.586,
              9.233434657,
              115007.5988,
              2250665.086,
              1263.853435
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114515.07881006935,
                    2250188.5857674954,
                    9.233434656846157
                  ],
                  [
                    114515.07881006935,
                    2250665.0857674954,
                    9.233434656846157
                  ],
                  [
                    115007.59881006934,
                    2250665.0857674954,
                    1263.8534346568463
                  ],
                  [
                    115007.59881006934,
                    2250188.5857674954,
                    1263.8534346568463
                  ],
                  [
                    114515.07881006935,
                    2250188.5857674954,
                    9.233434656846157
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:43:58+00:00",
            "end_time": "2018-07-22T16:55:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1411.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0253221204682,
              70.2324783989982,
              1.998515516907617
            ],
            [
              -151.02476731784006,
              70.23682217104003,
              1.998515516907617
            ],
            [
              -151.01196802635457,
              70.23662037289424,
              626.1385155169075
            ],
            [
              -151.0125252092839,
              70.23227664329157,
              626.1385155169075
            ],
            [
              -151.0253221204682,
              70.2324783989982,
              1.998515516907617
            ]
          ]
        ]
      },
      "bbox": [
        -151.0253221,
        70.23227664,
        1.998515517,
        -151.011968,
        70.23682217,
        626.1385155
      ],
      "properties": {
        "datetime": "2018-07-22T17:45:54Z",
        "pc:count": 3766540,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114587.6949,
            "count": 3766540,
            "maximum": 114840.1035,
            "minimum": 114347.5235,
            "name": "X",
            "position": 0,
            "stddev": 138.7456775,
            "variance": 19250.36302
          },
          {
            "average": 2253129.348,
            "count": 3766540,
            "maximum": 2253354.056,
            "minimum": 2252877.696,
            "name": "Y",
            "position": 1,
            "stddev": 126.8463167,
            "variance": 16089.98807
          },
          {
            "average": 10.27866862,
            "count": 3766540,
            "maximum": 626.1385155,
            "minimum": 1.998515517,
            "name": "Z",
            "position": 2,
            "stddev": 6.516606597,
            "variance": 42.46616154
          },
          {
            "average": 46971.87465,
            "count": 3766540,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9933.595114,
            "variance": 98676311.89
          },
          {
            "average": 1.000724538,
            "count": 3766540,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02690748737,
            "variance": 0.0007240128768
          },
          {
            "average": 1.001449872,
            "count": 3766540,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03804957321,
            "variance": 0.001447770022
          },
          {
            "average": 0.5035608277,
            "count": 3766540,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999873867,
            "variance": 0.2499873869
          },
          {
            "average": 0.0004308994462,
            "count": 3766540,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02075364754,
            "variance": 0.0004307138862
          },
          {
            "average": 1.305176369,
            "count": 3766540,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8713584465,
            "variance": 0.7592655423
          },
          {
            "average": -2.128991359,
            "count": 3766540,
            "maximum": 19.38599968,
            "minimum": -19.86599922,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41492462,
            "variance": 108.4706547
          },
          {
            "average": 0.4721866753,
            "count": 3766540,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992258859,
            "variance": 0.2492264851
          },
          {
            "average": 315.9411216,
            "count": 3766540,
            "maximum": 355,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.75076829,
            "variance": 351.5913115
          },
          {
            "average": 216314533.5,
            "count": 3766540,
            "maximum": 216316754,
            "minimum": 216313661.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 953.5284163,
            "variance": 909216.4406
          },
          {
            "average": 0.4721866753,
            "count": 3766540,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992258859,
            "variance": 0.2492264851
          },
          {
            "average": 0,
            "count": 3766540,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3766540,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3766540,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2331797883,
            "count": 3766540,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4228557935,
            "variance": 0.1788070221
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114347.5235,
          2252877.696,
          1.998515517,
          114840.1035,
          2253354.056,
          626.1385155
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114347.52345133932,
                2252877.6960377344,
                1.998515516907617
              ],
              [
                114347.52345133932,
                2253354.0560377347,
                1.998515516907617
              ],
              [
                114840.10345133931,
                2253354.0560377347,
                626.1385155169075
              ],
              [
                114840.10345133931,
                2252877.6960377344,
                626.1385155169075
              ],
              [
                114347.52345133932,
                2252877.6960377344,
                1.998515516907617
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:45:54+00:00",
        "end_time": "2018-07-22T16:54:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1411.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1411.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1411.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1411.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0253221,
            70.23227664,
            1.998515517,
            -151.011968,
            70.23682217,
            626.1385155
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0253221204682,
                  70.2324783989982,
                  1.998515516907617
                ],
                [
                  -151.02476731784006,
                  70.23682217104003,
                  1.998515516907617
                ],
                [
                  -151.01196802635457,
                  70.23662037289424,
                  626.1385155169075
                ],
                [
                  -151.0125252092839,
                  70.23227664329157,
                  626.1385155169075
                ],
                [
                  -151.0253221204682,
                  70.2324783989982,
                  1.998515516907617
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1411.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1411.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:45:54Z",
            "pc:count": 3766540,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114587.6949,
                "count": 3766540,
                "maximum": 114840.1035,
                "minimum": 114347.5235,
                "name": "X",
                "position": 0,
                "stddev": 138.7456775,
                "variance": 19250.36302
              },
              {
                "average": 2253129.348,
                "count": 3766540,
                "maximum": 2253354.056,
                "minimum": 2252877.696,
                "name": "Y",
                "position": 1,
                "stddev": 126.8463167,
                "variance": 16089.98807
              },
              {
                "average": 10.27866862,
                "count": 3766540,
                "maximum": 626.1385155,
                "minimum": 1.998515517,
                "name": "Z",
                "position": 2,
                "stddev": 6.516606597,
                "variance": 42.46616154
              },
              {
                "average": 46971.87465,
                "count": 3766540,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9933.595114,
                "variance": 98676311.89
              },
              {
                "average": 1.000724538,
                "count": 3766540,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02690748737,
                "variance": 0.0007240128768
              },
              {
                "average": 1.001449872,
                "count": 3766540,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03804957321,
                "variance": 0.001447770022
              },
              {
                "average": 0.5035608277,
                "count": 3766540,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999873867,
                "variance": 0.2499873869
              },
              {
                "average": 0.0004308994462,
                "count": 3766540,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02075364754,
                "variance": 0.0004307138862
              },
              {
                "average": 1.305176369,
                "count": 3766540,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8713584465,
                "variance": 0.7592655423
              },
              {
                "average": -2.128991359,
                "count": 3766540,
                "maximum": 19.38599968,
                "minimum": -19.86599922,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41492462,
                "variance": 108.4706547
              },
              {
                "average": 0.4721866753,
                "count": 3766540,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992258859,
                "variance": 0.2492264851
              },
              {
                "average": 315.9411216,
                "count": 3766540,
                "maximum": 355,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.75076829,
                "variance": 351.5913115
              },
              {
                "average": 216314533.5,
                "count": 3766540,
                "maximum": 216316754,
                "minimum": 216313661.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 953.5284163,
                "variance": 909216.4406
              },
              {
                "average": 0.4721866753,
                "count": 3766540,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992258859,
                "variance": 0.2492264851
              },
              {
                "average": 0,
                "count": 3766540,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3766540,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3766540,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2331797883,
                "count": 3766540,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4228557935,
                "variance": 0.1788070221
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114347.5235,
              2252877.696,
              1.998515517,
              114840.1035,
              2253354.056,
              626.1385155
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114347.52345133932,
                    2252877.6960377344,
                    1.998515516907617
                  ],
                  [
                    114347.52345133932,
                    2253354.0560377347,
                    1.998515516907617
                  ],
                  [
                    114840.10345133931,
                    2253354.0560377347,
                    626.1385155169075
                  ],
                  [
                    114840.10345133931,
                    2252877.6960377344,
                    626.1385155169075
                  ],
                  [
                    114347.52345133932,
                    2252877.6960377344,
                    1.998515516907617
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:45:54+00:00",
            "end_time": "2018-07-22T16:54:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1015.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97534011429568,
              70.19996428640454,
              4.21210341973449
            ],
            [
              -150.97477671102692,
              70.20430768105919,
              4.21210341973449
            ],
            [
              -150.96200035992445,
              70.20410261429905,
              1274.5121034197346
            ],
            [
              -150.96256613597353,
              70.19975926269004,
              1274.5121034197346
            ],
            [
              -150.97534011429568,
              70.19996428640454,
              4.21210341973449
            ]
          ]
        ]
      },
      "bbox": [
        -150.9753401,
        70.19975926,
        4.21210342,
        -150.9620004,
        70.20430768,
        1274.512103
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:40Z",
        "pc:count": 5572197,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116667.1963,
            "count": 5572197,
            "maximum": 116922.1232,
            "minimum": 116429.7232,
            "name": "X",
            "position": 0,
            "stddev": 135.2186776,
            "variance": 18284.09076
          },
          {
            "average": 2249640.61,
            "count": 5572197,
            "maximum": 2249882.146,
            "minimum": 2249405.726,
            "name": "Y",
            "position": 1,
            "stddev": 128.0280115,
            "variance": 16391.17172
          },
          {
            "average": 6.332650969,
            "count": 5572197,
            "maximum": 1274.512103,
            "minimum": 4.21210342,
            "name": "Z",
            "position": 2,
            "stddev": 4.318313921,
            "variance": 18.64783512
          },
          {
            "average": 42342.25388,
            "count": 5572197,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14683.69467,
            "variance": 215610889.2
          },
          {
            "average": 1.000000718,
            "count": 5572197,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008472598913,
            "variance": 7.178493234e-07
          },
          {
            "average": 1.000001436,
            "count": 5572197,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001198205999,
            "variance": 1.435697616e-06
          },
          {
            "average": 0.5018510652,
            "count": 5572197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999966184,
            "variance": 0.2499966184
          },
          {
            "average": 0.0003312876411,
            "count": 5572197,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01819829522,
            "variance": 0.0003311779491
          },
          {
            "average": 1.166063942,
            "count": 5572197,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3738081894,
            "variance": 0.1397325625
          },
          {
            "average": 0.2141614936,
            "count": 5572197,
            "maximum": 20.49600029,
            "minimum": -20.09399986,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.54425735,
            "variance": 111.1813631
          },
          {
            "average": 0.5176556033,
            "count": 5572197,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996882273,
            "variance": 0.2496883245
          },
          {
            "average": 321.3534889,
            "count": 5572197,
            "maximum": 363,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.73842864,
            "variance": 714.9435661
          },
          {
            "average": 216315417.4,
            "count": 5572197,
            "maximum": 216321180.3,
            "minimum": 216312556.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3137.13188,
            "variance": 9841596.433
          },
          {
            "average": 0.5176556033,
            "count": 5572197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996882273,
            "variance": 0.2496883245
          },
          {
            "average": 0,
            "count": 5572197,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5572197,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5572197,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1732576935,
            "count": 5572197,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3784699339,
            "variance": 0.1432394909
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116429.7232,
          2249405.726,
          4.21210342,
          116922.1232,
          2249882.146,
          1274.512103
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116429.72315872228,
                2249405.7261471855,
                4.21210341973449
              ],
              [
                116429.72315872228,
                2249882.1461471855,
                4.21210341973449
              ],
              [
                116922.12315872227,
                2249882.1461471855,
                1274.5121034197346
              ],
              [
                116922.12315872227,
                2249405.7261471855,
                1274.5121034197346
              ],
              [
                116429.72315872228,
                2249405.7261471855,
                4.21210341973449
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:40+00:00",
        "end_time": "2018-07-22T16:35:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1015.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1015.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1015.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1015.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9753401,
            70.19975926,
            4.21210342,
            -150.9620004,
            70.20430768,
            1274.512103
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97534011429568,
                  70.19996428640454,
                  4.21210341973449
                ],
                [
                  -150.97477671102692,
                  70.20430768105919,
                  4.21210341973449
                ],
                [
                  -150.96200035992445,
                  70.20410261429905,
                  1274.5121034197346
                ],
                [
                  -150.96256613597353,
                  70.19975926269004,
                  1274.5121034197346
                ],
                [
                  -150.97534011429568,
                  70.19996428640454,
                  4.21210341973449
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1015.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1015.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:40Z",
            "pc:count": 5572197,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116667.1963,
                "count": 5572197,
                "maximum": 116922.1232,
                "minimum": 116429.7232,
                "name": "X",
                "position": 0,
                "stddev": 135.2186776,
                "variance": 18284.09076
              },
              {
                "average": 2249640.61,
                "count": 5572197,
                "maximum": 2249882.146,
                "minimum": 2249405.726,
                "name": "Y",
                "position": 1,
                "stddev": 128.0280115,
                "variance": 16391.17172
              },
              {
                "average": 6.332650969,
                "count": 5572197,
                "maximum": 1274.512103,
                "minimum": 4.21210342,
                "name": "Z",
                "position": 2,
                "stddev": 4.318313921,
                "variance": 18.64783512
              },
              {
                "average": 42342.25388,
                "count": 5572197,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14683.69467,
                "variance": 215610889.2
              },
              {
                "average": 1.000000718,
                "count": 5572197,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008472598913,
                "variance": 7.178493234e-07
              },
              {
                "average": 1.000001436,
                "count": 5572197,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001198205999,
                "variance": 1.435697616e-06
              },
              {
                "average": 0.5018510652,
                "count": 5572197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999966184,
                "variance": 0.2499966184
              },
              {
                "average": 0.0003312876411,
                "count": 5572197,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01819829522,
                "variance": 0.0003311779491
              },
              {
                "average": 1.166063942,
                "count": 5572197,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3738081894,
                "variance": 0.1397325625
              },
              {
                "average": 0.2141614936,
                "count": 5572197,
                "maximum": 20.49600029,
                "minimum": -20.09399986,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.54425735,
                "variance": 111.1813631
              },
              {
                "average": 0.5176556033,
                "count": 5572197,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996882273,
                "variance": 0.2496883245
              },
              {
                "average": 321.3534889,
                "count": 5572197,
                "maximum": 363,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.73842864,
                "variance": 714.9435661
              },
              {
                "average": 216315417.4,
                "count": 5572197,
                "maximum": 216321180.3,
                "minimum": 216312556.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3137.13188,
                "variance": 9841596.433
              },
              {
                "average": 0.5176556033,
                "count": 5572197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996882273,
                "variance": 0.2496883245
              },
              {
                "average": 0,
                "count": 5572197,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5572197,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5572197,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1732576935,
                "count": 5572197,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3784699339,
                "variance": 0.1432394909
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116429.7232,
              2249405.726,
              4.21210342,
              116922.1232,
              2249882.146,
              1274.512103
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116429.72315872228,
                    2249405.7261471855,
                    4.21210341973449
                  ],
                  [
                    116429.72315872228,
                    2249882.1461471855,
                    4.21210341973449
                  ],
                  [
                    116922.12315872227,
                    2249882.1461471855,
                    1274.5121034197346
                  ],
                  [
                    116922.12315872227,
                    2249405.7261471855,
                    1274.5121034197346
                  ],
                  [
                    116429.72315872228,
                    2249405.7261471855,
                    4.21210341973449
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:40+00:00",
            "end_time": "2018-07-22T16:35:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1312.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9886042269402,
              70.22448547243879,
              2.139653701804439
            ],
            [
              -150.98804270261502,
              70.22882949185906,
              2.139653701804439
            ],
            [
              -150.97525175610238,
              70.22862527722219,
              9.29965370180444
            ],
            [
              -150.97581565848202,
              70.22428130073281,
              9.29965370180444
            ],
            [
              -150.9886042269402,
              70.22448547243879,
              2.139653701804439
            ]
          ]
        ]
      },
      "bbox": [
        -150.9886042,
        70.2242813,
        2.139653702,
        -150.9752518,
        70.22882949,
        9.299653702
      ],
      "properties": {
        "datetime": "2018-07-22T17:52:49Z",
        "pc:count": 4245831,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116036.8376,
            "count": 4245831,
            "maximum": 116290.1435,
            "minimum": 115797.7035,
            "name": "X",
            "position": 0,
            "stddev": 130.5307567,
            "variance": 17038.27844
          },
          {
            "average": 2252295.702,
            "count": 4245831,
            "maximum": 2252542.932,
            "minimum": 2252066.512,
            "name": "Y",
            "position": 1,
            "stddev": 126.8075621,
            "variance": 16080.1578
          },
          {
            "average": 5.176054786,
            "count": 4245831,
            "maximum": 9.299653702,
            "minimum": 2.139653702,
            "name": "Z",
            "position": 2,
            "stddev": 0.6796234941,
            "variance": 0.4618880937
          },
          {
            "average": 40014.83198,
            "count": 4245831,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10526.78912,
            "variance": 110813289.3
          },
          {
            "average": 1.002851268,
            "count": 4245831,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05336524113,
            "variance": 0.002847848961
          },
          {
            "average": 1.00570018,
            "count": 4245831,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07537785201,
            "variance": 0.005681820574
          },
          {
            "average": 0.5029364099,
            "count": 4245831,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999914363,
            "variance": 0.2499914364
          },
          {
            "average": 0.0004211189753,
            "count": 4245831,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02051686461,
            "variance": 0.0004209417332
          },
          {
            "average": 1.272080071,
            "count": 4245831,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6108442421,
            "variance": 0.3731306881
          },
          {
            "average": -0.7972546135,
            "count": 4245831,
            "maximum": 16.48200035,
            "minimum": -19.89599991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.18200319,
            "variance": 103.673189
          },
          {
            "average": 0.4993896366,
            "count": 4245831,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999996863,
            "variance": 0.2499996863
          },
          {
            "average": 313.1332373,
            "count": 4245831,
            "maximum": 356,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.8520052,
            "variance": 434.8061209
          },
          {
            "average": 216313950.2,
            "count": 4245831,
            "maximum": 216317169.3,
            "minimum": 216312788.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1475.317114,
            "variance": 2176560.588
          },
          {
            "average": 0.4993896366,
            "count": 4245831,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999996863,
            "variance": 0.2499996863
          },
          {
            "average": 0,
            "count": 4245831,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4245831,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4245831,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.185633154,
            "count": 4245831,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3888103931,
            "variance": 0.1511735218
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115797.7035,
          2252066.512,
          2.139653702,
          116290.1435,
          2252542.932,
          9.299653702
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115797.70346142675,
                2252066.5123110446,
                2.139653701804439
              ],
              [
                115797.70346142675,
                2252542.9323110445,
                2.139653701804439
              ],
              [
                116290.14346142675,
                2252542.9323110445,
                9.29965370180444
              ],
              [
                116290.14346142675,
                2252066.5123110446,
                9.29965370180444
              ],
              [
                115797.70346142675,
                2252066.5123110446,
                2.139653701804439
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:52:49+00:00",
        "end_time": "2018-07-22T16:39:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1312.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1312.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1312.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1312.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9886042,
            70.2242813,
            2.139653702,
            -150.9752518,
            70.22882949,
            9.299653702
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9886042269402,
                  70.22448547243879,
                  2.139653701804439
                ],
                [
                  -150.98804270261502,
                  70.22882949185906,
                  2.139653701804439
                ],
                [
                  -150.97525175610238,
                  70.22862527722219,
                  9.29965370180444
                ],
                [
                  -150.97581565848202,
                  70.22428130073281,
                  9.29965370180444
                ],
                [
                  -150.9886042269402,
                  70.22448547243879,
                  2.139653701804439
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1312.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1312.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:52:49Z",
            "pc:count": 4245831,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116036.8376,
                "count": 4245831,
                "maximum": 116290.1435,
                "minimum": 115797.7035,
                "name": "X",
                "position": 0,
                "stddev": 130.5307567,
                "variance": 17038.27844
              },
              {
                "average": 2252295.702,
                "count": 4245831,
                "maximum": 2252542.932,
                "minimum": 2252066.512,
                "name": "Y",
                "position": 1,
                "stddev": 126.8075621,
                "variance": 16080.1578
              },
              {
                "average": 5.176054786,
                "count": 4245831,
                "maximum": 9.299653702,
                "minimum": 2.139653702,
                "name": "Z",
                "position": 2,
                "stddev": 0.6796234941,
                "variance": 0.4618880937
              },
              {
                "average": 40014.83198,
                "count": 4245831,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10526.78912,
                "variance": 110813289.3
              },
              {
                "average": 1.002851268,
                "count": 4245831,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05336524113,
                "variance": 0.002847848961
              },
              {
                "average": 1.00570018,
                "count": 4245831,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07537785201,
                "variance": 0.005681820574
              },
              {
                "average": 0.5029364099,
                "count": 4245831,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999914363,
                "variance": 0.2499914364
              },
              {
                "average": 0.0004211189753,
                "count": 4245831,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02051686461,
                "variance": 0.0004209417332
              },
              {
                "average": 1.272080071,
                "count": 4245831,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6108442421,
                "variance": 0.3731306881
              },
              {
                "average": -0.7972546135,
                "count": 4245831,
                "maximum": 16.48200035,
                "minimum": -19.89599991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.18200319,
                "variance": 103.673189
              },
              {
                "average": 0.4993896366,
                "count": 4245831,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999996863,
                "variance": 0.2499996863
              },
              {
                "average": 313.1332373,
                "count": 4245831,
                "maximum": 356,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.8520052,
                "variance": 434.8061209
              },
              {
                "average": 216313950.2,
                "count": 4245831,
                "maximum": 216317169.3,
                "minimum": 216312788.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1475.317114,
                "variance": 2176560.588
              },
              {
                "average": 0.4993896366,
                "count": 4245831,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999996863,
                "variance": 0.2499996863
              },
              {
                "average": 0,
                "count": 4245831,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4245831,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4245831,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.185633154,
                "count": 4245831,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3888103931,
                "variance": 0.1511735218
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115797.7035,
              2252066.512,
              2.139653702,
              116290.1435,
              2252542.932,
              9.299653702
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115797.70346142675,
                    2252066.5123110446,
                    2.139653701804439
                  ],
                  [
                    115797.70346142675,
                    2252542.9323110445,
                    2.139653701804439
                  ],
                  [
                    116290.14346142675,
                    2252542.9323110445,
                    9.29965370180444
                  ],
                  [
                    116290.14346142675,
                    2252066.5123110446,
                    9.29965370180444
                  ],
                  [
                    115797.70346142675,
                    2252066.5123110446,
                    2.139653701804439
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:52:49+00:00",
            "end_time": "2018-07-22T16:39:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0929.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0353718429983,
              70.19143004896264,
              10.79018877695781
            ],
            [
              -151.0348197698801,
              70.19577378244344,
              10.79018877695781
            ],
            [
              -151.02204652887056,
              70.19557276760152,
              12.79018877695781
            ],
            [
              -151.02260097381532,
              70.19122907629928,
              12.79018877695781
            ],
            [
              -151.0353718429983,
              70.19143004896264,
              10.79018877695781
            ]
          ]
        ]
      },
      "bbox": [
        -151.0353718,
        70.19122908,
        10.79018878,
        -151.0220465,
        70.19577378,
        12.79018878
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:46Z",
        "pc:count": 4424644,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114417.5784,
            "count": 4424644,
            "maximum": 114654.6156,
            "minimum": 114162.1756,
            "name": "X",
            "position": 0,
            "stddev": 127.6542722,
            "variance": 16295.61321
          },
          {
            "average": 2248611.036,
            "count": 4424644,
            "maximum": 2248843.747,
            "minimum": 2248367.287,
            "name": "Y",
            "position": 1,
            "stddev": 129.8296395,
            "variance": 16855.7353
          },
          {
            "average": 11.57929879,
            "count": 4424644,
            "maximum": 12.79018878,
            "minimum": 10.79018878,
            "name": "Z",
            "position": 2,
            "stddev": 0.260115189,
            "variance": 0.06765991155
          },
          {
            "average": 45297.34265,
            "count": 4424644,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 14598.96832,
            "variance": 213129876.1
          },
          {
            "average": 1,
            "count": 4424644,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4424644,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5029855509,
            "count": 4424644,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999911429,
            "variance": 0.249991143
          },
          {
            "average": 0.0004628620969,
            "count": 4424644,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0215092529,
            "variance": 0.0004626479602
          },
          {
            "average": 1.62167849,
            "count": 4424644,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.901243346,
            "variance": 3.614726261
          },
          {
            "average": -0.8499962327,
            "count": 4424644,
            "maximum": 20.59199905,
            "minimum": -19.97400093,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.73333397,
            "variance": 137.671126
          },
          {
            "average": 0.5079990616,
            "count": 4424644,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999360674,
            "variance": 0.2499360715
          },
          {
            "average": 326.5825533,
            "count": 4424644,
            "maximum": 364,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.08883764,
            "variance": 680.6274492
          },
          {
            "average": 216316664.7,
            "count": 4424644,
            "maximum": 216321546.4,
            "minimum": 216313884.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3222.162025,
            "variance": 10382328.11
          },
          {
            "average": 0.5079990616,
            "count": 4424644,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999360674,
            "variance": 0.2499360715
          },
          {
            "average": 0,
            "count": 4424644,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4424644,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4424644,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2234988849,
            "count": 4424644,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4165899333,
            "variance": 0.1735471726
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114162.1756,
          2248367.287,
          10.79018878,
          114654.6156,
          2248843.747,
          12.79018878
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114162.17562677339,
                2248367.2868934083,
                10.79018877695781
              ],
              [
                114162.17562677339,
                2248843.7468934082,
                10.79018877695781
              ],
              [
                114654.61562677339,
                2248843.7468934082,
                12.79018877695781
              ],
              [
                114654.61562677339,
                2248367.2868934083,
                12.79018877695781
              ],
              [
                114162.17562677339,
                2248367.2868934083,
                10.79018877695781
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:46+00:00",
        "end_time": "2018-07-22T16:58:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0929.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0929.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0929.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0929.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0353718,
            70.19122908,
            10.79018878,
            -151.0220465,
            70.19577378,
            12.79018878
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0353718429983,
                  70.19143004896264,
                  10.79018877695781
                ],
                [
                  -151.0348197698801,
                  70.19577378244344,
                  10.79018877695781
                ],
                [
                  -151.02204652887056,
                  70.19557276760152,
                  12.79018877695781
                ],
                [
                  -151.02260097381532,
                  70.19122907629928,
                  12.79018877695781
                ],
                [
                  -151.0353718429983,
                  70.19143004896264,
                  10.79018877695781
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0929.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0929.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:46Z",
            "pc:count": 4424644,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114417.5784,
                "count": 4424644,
                "maximum": 114654.6156,
                "minimum": 114162.1756,
                "name": "X",
                "position": 0,
                "stddev": 127.6542722,
                "variance": 16295.61321
              },
              {
                "average": 2248611.036,
                "count": 4424644,
                "maximum": 2248843.747,
                "minimum": 2248367.287,
                "name": "Y",
                "position": 1,
                "stddev": 129.8296395,
                "variance": 16855.7353
              },
              {
                "average": 11.57929879,
                "count": 4424644,
                "maximum": 12.79018878,
                "minimum": 10.79018878,
                "name": "Z",
                "position": 2,
                "stddev": 0.260115189,
                "variance": 0.06765991155
              },
              {
                "average": 45297.34265,
                "count": 4424644,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 14598.96832,
                "variance": 213129876.1
              },
              {
                "average": 1,
                "count": 4424644,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4424644,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5029855509,
                "count": 4424644,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999911429,
                "variance": 0.249991143
              },
              {
                "average": 0.0004628620969,
                "count": 4424644,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0215092529,
                "variance": 0.0004626479602
              },
              {
                "average": 1.62167849,
                "count": 4424644,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.901243346,
                "variance": 3.614726261
              },
              {
                "average": -0.8499962327,
                "count": 4424644,
                "maximum": 20.59199905,
                "minimum": -19.97400093,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.73333397,
                "variance": 137.671126
              },
              {
                "average": 0.5079990616,
                "count": 4424644,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999360674,
                "variance": 0.2499360715
              },
              {
                "average": 326.5825533,
                "count": 4424644,
                "maximum": 364,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.08883764,
                "variance": 680.6274492
              },
              {
                "average": 216316664.7,
                "count": 4424644,
                "maximum": 216321546.4,
                "minimum": 216313884.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3222.162025,
                "variance": 10382328.11
              },
              {
                "average": 0.5079990616,
                "count": 4424644,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999360674,
                "variance": 0.2499360715
              },
              {
                "average": 0,
                "count": 4424644,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4424644,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4424644,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2234988849,
                "count": 4424644,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4165899333,
                "variance": 0.1735471726
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114162.1756,
              2248367.287,
              10.79018878,
              114654.6156,
              2248843.747,
              12.79018878
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114162.17562677339,
                    2248367.2868934083,
                    10.79018877695781
                  ],
                  [
                    114162.17562677339,
                    2248843.7468934082,
                    10.79018877695781
                  ],
                  [
                    114654.61562677339,
                    2248843.7468934082,
                    12.79018877695781
                  ],
                  [
                    114654.61562677339,
                    2248367.2868934083,
                    12.79018877695781
                  ],
                  [
                    114162.17562677339,
                    2248367.2868934083,
                    10.79018877695781
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:46+00:00",
            "end_time": "2018-07-22T16:58:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1362.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.00090847684638,
              70.22851601240217,
              -2.633164823688244
            ],
            [
              -151.00034914858387,
              70.23286016475619,
              -2.633164823688244
            ],
            [
              -150.98755276491514,
              70.23265672790895,
              25.726835176311756
            ],
            [
              -150.9881144727145,
              70.22831261833315,
              25.726835176311756
            ],
            [
              -151.00090847684638,
              70.22851601240217,
              -2.633164823688244
            ]
          ]
        ]
      },
      "bbox": [
        -151.0009085,
        70.22831262,
        -2.633164824,
        -150.9875528,
        70.23286016,
        25.72683518
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:10Z",
        "pc:count": 4108197,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115554.6922,
            "count": 4108197,
            "maximum": 115797.5134,
            "minimum": 115304.9534,
            "name": "X",
            "position": 0,
            "stddev": 126.8734129,
            "variance": 16096.86291
          },
          {
            "average": 2252723.505,
            "count": 4108197,
            "maximum": 2252962.657,
            "minimum": 2252486.237,
            "name": "Y",
            "position": 1,
            "stddev": 128.272148,
            "variance": 16453.74394
          },
          {
            "average": 7.466715783,
            "count": 4108197,
            "maximum": 25.72683518,
            "minimum": -2.633164824,
            "name": "Z",
            "position": 2,
            "stddev": 2.58231856,
            "variance": 6.668369144
          },
          {
            "average": 44238.04077,
            "count": 4108197,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 15681.26828,
            "variance": 245902174.8
          },
          {
            "average": 1.000115622,
            "count": 4108197,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01075216991,
            "variance": 0.0001156091577
          },
          {
            "average": 1.000227107,
            "count": 4108197,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01506835776,
            "variance": 0.0002270554056
          },
          {
            "average": 0.4938387813,
            "count": 4108197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999620988,
            "variance": 0.2499621002
          },
          {
            "average": 0.0004186751512,
            "count": 4108197,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02045727167,
            "variance": 0.0004184999642
          },
          {
            "average": 1.889540838,
            "count": 4108197,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.328563179,
            "variance": 5.422206476
          },
          {
            "average": 3.530385454,
            "count": 4108197,
            "maximum": 20.47800064,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50886213,
            "variance": 110.4361832
          },
          {
            "average": 0.4744229646,
            "count": 4108197,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993454475,
            "variance": 0.249345876
          },
          {
            "average": 316.9140457,
            "count": 4108197,
            "maximum": 355,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.88546228,
            "variance": 478.9734592
          },
          {
            "average": 216314306.3,
            "count": 4108197,
            "maximum": 216316770.3,
            "minimum": 216313225,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1371.440588,
            "variance": 1880849.286
          },
          {
            "average": 0.4744229646,
            "count": 4108197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993454475,
            "variance": 0.249345876
          },
          {
            "average": 0,
            "count": 4108197,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4108197,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4108197,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2094536849,
            "count": 4108197,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4069187623,
            "variance": 0.1655828791
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115304.9534,
          2252486.237,
          -2.633164824,
          115797.5134,
          2252962.657,
          25.72683518
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115304.9534028048,
                2252486.2373986756,
                -2.633164823688244
              ],
              [
                115304.9534028048,
                2252962.6573986756,
                -2.633164823688244
              ],
              [
                115797.51340280479,
                2252962.6573986756,
                25.726835176311756
              ],
              [
                115797.51340280479,
                2252486.2373986756,
                25.726835176311756
              ],
              [
                115304.9534028048,
                2252486.2373986756,
                -2.633164823688244
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:10+00:00",
        "end_time": "2018-07-22T16:47:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1362.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1362.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1362.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1362.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0009085,
            70.22831262,
            -2.633164824,
            -150.9875528,
            70.23286016,
            25.72683518
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.00090847684638,
                  70.22851601240217,
                  -2.633164823688244
                ],
                [
                  -151.00034914858387,
                  70.23286016475619,
                  -2.633164823688244
                ],
                [
                  -150.98755276491514,
                  70.23265672790895,
                  25.726835176311756
                ],
                [
                  -150.9881144727145,
                  70.22831261833315,
                  25.726835176311756
                ],
                [
                  -151.00090847684638,
                  70.22851601240217,
                  -2.633164823688244
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1362.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1362.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:10Z",
            "pc:count": 4108197,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115554.6922,
                "count": 4108197,
                "maximum": 115797.5134,
                "minimum": 115304.9534,
                "name": "X",
                "position": 0,
                "stddev": 126.8734129,
                "variance": 16096.86291
              },
              {
                "average": 2252723.505,
                "count": 4108197,
                "maximum": 2252962.657,
                "minimum": 2252486.237,
                "name": "Y",
                "position": 1,
                "stddev": 128.272148,
                "variance": 16453.74394
              },
              {
                "average": 7.466715783,
                "count": 4108197,
                "maximum": 25.72683518,
                "minimum": -2.633164824,
                "name": "Z",
                "position": 2,
                "stddev": 2.58231856,
                "variance": 6.668369144
              },
              {
                "average": 44238.04077,
                "count": 4108197,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 15681.26828,
                "variance": 245902174.8
              },
              {
                "average": 1.000115622,
                "count": 4108197,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01075216991,
                "variance": 0.0001156091577
              },
              {
                "average": 1.000227107,
                "count": 4108197,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01506835776,
                "variance": 0.0002270554056
              },
              {
                "average": 0.4938387813,
                "count": 4108197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999620988,
                "variance": 0.2499621002
              },
              {
                "average": 0.0004186751512,
                "count": 4108197,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02045727167,
                "variance": 0.0004184999642
              },
              {
                "average": 1.889540838,
                "count": 4108197,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.328563179,
                "variance": 5.422206476
              },
              {
                "average": 3.530385454,
                "count": 4108197,
                "maximum": 20.47800064,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50886213,
                "variance": 110.4361832
              },
              {
                "average": 0.4744229646,
                "count": 4108197,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993454475,
                "variance": 0.249345876
              },
              {
                "average": 316.9140457,
                "count": 4108197,
                "maximum": 355,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.88546228,
                "variance": 478.9734592
              },
              {
                "average": 216314306.3,
                "count": 4108197,
                "maximum": 216316770.3,
                "minimum": 216313225,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1371.440588,
                "variance": 1880849.286
              },
              {
                "average": 0.4744229646,
                "count": 4108197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993454475,
                "variance": 0.249345876
              },
              {
                "average": 0,
                "count": 4108197,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4108197,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4108197,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2094536849,
                "count": 4108197,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4069187623,
                "variance": 0.1655828791
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115304.9534,
              2252486.237,
              -2.633164824,
              115797.5134,
              2252962.657,
              25.72683518
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115304.9534028048,
                    2252486.2373986756,
                    -2.633164823688244
                  ],
                  [
                    115304.9534028048,
                    2252962.6573986756,
                    -2.633164823688244
                  ],
                  [
                    115797.51340280479,
                    2252962.6573986756,
                    25.726835176311756
                  ],
                  [
                    115797.51340280479,
                    2252486.2373986756,
                    25.726835176311756
                  ],
                  [
                    115304.9534028048,
                    2252486.2373986756,
                    -2.633164823688244
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:10+00:00",
            "end_time": "2018-07-22T16:47:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0971.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.98723335506352,
              70.1958007216268,
              4.099914685024719
            ],
            [
              -150.98667221862675,
              70.20014441723906,
              4.099914685024719
            ],
            [
              -150.97389752328536,
              70.19994015098995,
              19.33991468502472
            ],
            [
              -150.97446103202924,
              70.19559649824839,
              19.33991468502472
            ],
            [
              -150.98723335506352,
              70.1958007216268,
              4.099914685024719
            ]
          ]
        ]
      },
      "bbox": [
        -150.9872334,
        70.1955965,
        4.099914685,
        -150.9738975,
        70.20014442,
        19.33991469
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:13Z",
        "pc:count": 4487262,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116231.0226,
            "count": 4487262,
            "maximum": 116485.3356,
            "minimum": 115992.9156,
            "name": "X",
            "position": 0,
            "stddev": 135.8464618,
            "variance": 18454.26119
          },
          {
            "average": 2249186.474,
            "count": 4487262,
            "maximum": 2249405.614,
            "minimum": 2248929.154,
            "name": "Y",
            "position": 1,
            "stddev": 124.186705,
            "variance": 15422.33771
          },
          {
            "average": 5.748678524,
            "count": 4487262,
            "maximum": 19.33991469,
            "minimum": 4.099914685,
            "name": "Z",
            "position": 2,
            "stddev": 0.6964093922,
            "variance": 0.4849860416
          },
          {
            "average": 44621.66836,
            "count": 4487262,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 14500.76982,
            "variance": 210272325.3
          },
          {
            "average": 1.000000669,
            "count": 4487262,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008176544727,
            "variance": 6.685588367e-07
          },
          {
            "average": 1.000001337,
            "count": 4487262,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001156337658,
            "variance": 1.33711678e-06
          },
          {
            "average": 0.5044673121,
            "count": 4487262,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999800984,
            "variance": 0.2499800988
          },
          {
            "average": 0.0005239275086,
            "count": 4487262,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02288346838,
            "variance": 0.0005236531252
          },
          {
            "average": 1.469888542,
            "count": 4487262,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.581709159,
            "variance": 2.501803862
          },
          {
            "average": -1.954588841,
            "count": 4487262,
            "maximum": 20.4659996,
            "minimum": -19.92000008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.37604869,
            "variance": 107.6623864
          },
          {
            "average": 0.4742861014,
            "count": 4487262,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993384133,
            "variance": 0.249338851
          },
          {
            "average": 321.8252324,
            "count": 4487262,
            "maximum": 364,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.85107088,
            "variance": 720.9800073
          },
          {
            "average": 216315665.3,
            "count": 4487262,
            "maximum": 216321513.6,
            "minimum": 216312841.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3336.818956,
            "variance": 11134360.74
          },
          {
            "average": 0.4742861014,
            "count": 4487262,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993384133,
            "variance": 0.249338851
          },
          {
            "average": 0,
            "count": 4487262,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4487262,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4487262,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.230163739,
            "count": 4487262,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4209375628,
            "variance": 0.1771884318
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115992.9156,
          2248929.154,
          4.099914685,
          116485.3356,
          2249405.614,
          19.33991469
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115992.91556238552,
                2248929.153938226,
                4.099914685024719
              ],
              [
                115992.91556238552,
                2249405.613938226,
                4.099914685024719
              ],
              [
                116485.33556238553,
                2249405.613938226,
                19.33991468502472
              ],
              [
                116485.33556238553,
                2248929.153938226,
                19.33991468502472
              ],
              [
                115992.91556238552,
                2248929.153938226,
                4.099914685024719
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:13+00:00",
        "end_time": "2018-07-22T16:40:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0971.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0971.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0971.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0971.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9872334,
            70.1955965,
            4.099914685,
            -150.9738975,
            70.20014442,
            19.33991469
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.98723335506352,
                  70.1958007216268,
                  4.099914685024719
                ],
                [
                  -150.98667221862675,
                  70.20014441723906,
                  4.099914685024719
                ],
                [
                  -150.97389752328536,
                  70.19994015098995,
                  19.33991468502472
                ],
                [
                  -150.97446103202924,
                  70.19559649824839,
                  19.33991468502472
                ],
                [
                  -150.98723335506352,
                  70.1958007216268,
                  4.099914685024719
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0971.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0971.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:13Z",
            "pc:count": 4487262,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116231.0226,
                "count": 4487262,
                "maximum": 116485.3356,
                "minimum": 115992.9156,
                "name": "X",
                "position": 0,
                "stddev": 135.8464618,
                "variance": 18454.26119
              },
              {
                "average": 2249186.474,
                "count": 4487262,
                "maximum": 2249405.614,
                "minimum": 2248929.154,
                "name": "Y",
                "position": 1,
                "stddev": 124.186705,
                "variance": 15422.33771
              },
              {
                "average": 5.748678524,
                "count": 4487262,
                "maximum": 19.33991469,
                "minimum": 4.099914685,
                "name": "Z",
                "position": 2,
                "stddev": 0.6964093922,
                "variance": 0.4849860416
              },
              {
                "average": 44621.66836,
                "count": 4487262,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 14500.76982,
                "variance": 210272325.3
              },
              {
                "average": 1.000000669,
                "count": 4487262,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008176544727,
                "variance": 6.685588367e-07
              },
              {
                "average": 1.000001337,
                "count": 4487262,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001156337658,
                "variance": 1.33711678e-06
              },
              {
                "average": 0.5044673121,
                "count": 4487262,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999800984,
                "variance": 0.2499800988
              },
              {
                "average": 0.0005239275086,
                "count": 4487262,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02288346838,
                "variance": 0.0005236531252
              },
              {
                "average": 1.469888542,
                "count": 4487262,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.581709159,
                "variance": 2.501803862
              },
              {
                "average": -1.954588841,
                "count": 4487262,
                "maximum": 20.4659996,
                "minimum": -19.92000008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.37604869,
                "variance": 107.6623864
              },
              {
                "average": 0.4742861014,
                "count": 4487262,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993384133,
                "variance": 0.249338851
              },
              {
                "average": 321.8252324,
                "count": 4487262,
                "maximum": 364,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.85107088,
                "variance": 720.9800073
              },
              {
                "average": 216315665.3,
                "count": 4487262,
                "maximum": 216321513.6,
                "minimum": 216312841.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3336.818956,
                "variance": 11134360.74
              },
              {
                "average": 0.4742861014,
                "count": 4487262,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993384133,
                "variance": 0.249338851
              },
              {
                "average": 0,
                "count": 4487262,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4487262,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4487262,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.230163739,
                "count": 4487262,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4209375628,
                "variance": 0.1771884318
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115992.9156,
              2248929.154,
              4.099914685,
              116485.3356,
              2249405.614,
              19.33991469
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115992.91556238552,
                    2248929.153938226,
                    4.099914685024719
                  ],
                  [
                    115992.91556238552,
                    2249405.613938226,
                    4.099914685024719
                  ],
                  [
                    116485.33556238553,
                    2249405.613938226,
                    19.33991468502472
                  ],
                  [
                    116485.33556238553,
                    2248929.153938226,
                    19.33991468502472
                  ],
                  [
                    115992.91556238552,
                    2248929.153938226,
                    4.099914685024719
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:13+00:00",
            "end_time": "2018-07-22T16:40:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1057.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9876262127454,
              70.20399588252272,
              2.625239313049655
            ],
            [
              -150.98706495234012,
              70.20833977445284,
              2.625239313049655
            ],
            [
              -150.97428317096572,
              70.20813548385368,
              13.725239313049656
            ],
            [
              -150.97484680582957,
              70.20379163482067,
              13.725239313049656
            ],
            [
              -150.9876262127454,
              70.20399588252272,
              2.625239313049655
            ]
          ]
        ]
      },
      "bbox": [
        -150.9876262,
        70.20379163,
        2.625239313,
        -150.9742832,
        70.20833977,
        13.72523931
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:21Z",
        "pc:count": 5357756,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116178.0118,
            "count": 5357756,
            "maximum": 116429.6022,
            "minimum": 115937.0822,
            "name": "X",
            "position": 0,
            "stddev": 132.4275934,
            "variance": 17537.06749
          },
          {
            "average": 2250063.978,
            "count": 5357756,
            "maximum": 2250301.997,
            "minimum": 2249825.537,
            "name": "Y",
            "position": 1,
            "stddev": 125.1444815,
            "variance": 15661.14126
          },
          {
            "average": 8.094650358,
            "count": 5357756,
            "maximum": 13.72523931,
            "minimum": 2.625239313,
            "name": "Z",
            "position": 2,
            "stddev": 2.877598829,
            "variance": 8.280575023
          },
          {
            "average": 48731.28471,
            "count": 5357756,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12259.45512,
            "variance": 150294239.9
          },
          {
            "average": 1.000045355,
            "count": 5357756,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006734445812,
            "variance": 4.53527604e-05
          },
          {
            "average": 1.000090896,
            "count": 5357756,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009533520762,
            "variance": 9.088801812e-05
          },
          {
            "average": 0.499897905,
            "count": 5357756,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000362,
            "variance": 0.2500000362
          },
          {
            "average": 0.0004819181762,
            "count": 5357756,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02194734656,
            "variance": 0.000481686021
          },
          {
            "average": 1.532841734,
            "count": 5357756,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.711532689,
            "variance": 2.929344144
          },
          {
            "average": 0.869202187,
            "count": 5357756,
            "maximum": 20.4659996,
            "minimum": -19.97999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.41741467,
            "variance": 130.3573577
          },
          {
            "average": 0.4959292659,
            "count": 5357756,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999834755,
            "variance": 0.2499834758
          },
          {
            "average": 321.487472,
            "count": 5357756,
            "maximum": 361,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.79290715,
            "variance": 665.2740594
          },
          {
            "average": 216315240.6,
            "count": 5357756,
            "maximum": 216320261.7,
            "minimum": 216312826.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2622.196135,
            "variance": 6875912.571
          },
          {
            "average": 0.4959292659,
            "count": 5357756,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999834755,
            "variance": 0.2499834758
          },
          {
            "average": 0,
            "count": 5357756,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5357756,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5357756,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2264091534,
            "count": 5357756,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4185069669,
            "variance": 0.1751480813
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115937.0822,
          2249825.537,
          2.625239313,
          116429.6022,
          2250301.997,
          13.72523931
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115937.08217734595,
                2249825.536931666,
                2.625239313049655
              ],
              [
                115937.08217734595,
                2250301.996931666,
                2.625239313049655
              ],
              [
                116429.60217734594,
                2250301.996931666,
                13.725239313049656
              ],
              [
                116429.60217734594,
                2249825.536931666,
                13.725239313049656
              ],
              [
                115937.08217734595,
                2249825.536931666,
                2.625239313049655
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:21+00:00",
        "end_time": "2018-07-22T16:40:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1057.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1057.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1057.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1057.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9876262,
            70.20379163,
            2.625239313,
            -150.9742832,
            70.20833977,
            13.72523931
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9876262127454,
                  70.20399588252272,
                  2.625239313049655
                ],
                [
                  -150.98706495234012,
                  70.20833977445284,
                  2.625239313049655
                ],
                [
                  -150.97428317096572,
                  70.20813548385368,
                  13.725239313049656
                ],
                [
                  -150.97484680582957,
                  70.20379163482067,
                  13.725239313049656
                ],
                [
                  -150.9876262127454,
                  70.20399588252272,
                  2.625239313049655
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1057.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1057.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:21Z",
            "pc:count": 5357756,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116178.0118,
                "count": 5357756,
                "maximum": 116429.6022,
                "minimum": 115937.0822,
                "name": "X",
                "position": 0,
                "stddev": 132.4275934,
                "variance": 17537.06749
              },
              {
                "average": 2250063.978,
                "count": 5357756,
                "maximum": 2250301.997,
                "minimum": 2249825.537,
                "name": "Y",
                "position": 1,
                "stddev": 125.1444815,
                "variance": 15661.14126
              },
              {
                "average": 8.094650358,
                "count": 5357756,
                "maximum": 13.72523931,
                "minimum": 2.625239313,
                "name": "Z",
                "position": 2,
                "stddev": 2.877598829,
                "variance": 8.280575023
              },
              {
                "average": 48731.28471,
                "count": 5357756,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12259.45512,
                "variance": 150294239.9
              },
              {
                "average": 1.000045355,
                "count": 5357756,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006734445812,
                "variance": 4.53527604e-05
              },
              {
                "average": 1.000090896,
                "count": 5357756,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009533520762,
                "variance": 9.088801812e-05
              },
              {
                "average": 0.499897905,
                "count": 5357756,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000362,
                "variance": 0.2500000362
              },
              {
                "average": 0.0004819181762,
                "count": 5357756,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02194734656,
                "variance": 0.000481686021
              },
              {
                "average": 1.532841734,
                "count": 5357756,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.711532689,
                "variance": 2.929344144
              },
              {
                "average": 0.869202187,
                "count": 5357756,
                "maximum": 20.4659996,
                "minimum": -19.97999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.41741467,
                "variance": 130.3573577
              },
              {
                "average": 0.4959292659,
                "count": 5357756,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999834755,
                "variance": 0.2499834758
              },
              {
                "average": 321.487472,
                "count": 5357756,
                "maximum": 361,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.79290715,
                "variance": 665.2740594
              },
              {
                "average": 216315240.6,
                "count": 5357756,
                "maximum": 216320261.7,
                "minimum": 216312826.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2622.196135,
                "variance": 6875912.571
              },
              {
                "average": 0.4959292659,
                "count": 5357756,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999834755,
                "variance": 0.2499834758
              },
              {
                "average": 0,
                "count": 5357756,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5357756,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5357756,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2264091534,
                "count": 5357756,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4185069669,
                "variance": 0.1751480813
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115937.0822,
              2249825.537,
              2.625239313,
              116429.6022,
              2250301.997,
              13.72523931
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115937.08217734595,
                    2249825.536931666,
                    2.625239313049655
                  ],
                  [
                    115937.08217734595,
                    2250301.996931666,
                    2.625239313049655
                  ],
                  [
                    116429.60217734594,
                    2250301.996931666,
                    13.725239313049656
                  ],
                  [
                    116429.60217734594,
                    2249825.536931666,
                    13.725239313049656
                  ],
                  [
                    115937.08217734595,
                    2249825.536931666,
                    2.625239313049655
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:21+00:00",
            "end_time": "2018-07-22T16:40:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1412.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0132137825897,
              70.232546125717,
              3.010667000668263
            ],
            [
              -151.01265669816306,
              70.23689004617894,
              3.010667000668263
            ],
            [
              -150.99985851405395,
              70.23668744535094,
              606.5106670006683
            ],
            [
              -151.00041797862386,
              70.23234356749857,
              606.5106670006683
            ],
            [
              -151.0132137825897,
              70.232546125717,
              3.010667000668263
            ]
          ]
        ]
      },
      "bbox": [
        -151.0132138,
        70.23234357,
        3.010667001,
        -150.9998585,
        70.23689005,
        606.510667
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:02Z",
        "pc:count": 4054241,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115060.3424,
            "count": 4054241,
            "maximum": 115304.8648,
            "minimum": 114812.3248,
            "name": "X",
            "position": 0,
            "stddev": 137.1249834,
            "variance": 18803.26107
          },
          {
            "average": 2253152.497,
            "count": 4054241,
            "maximum": 2253382.379,
            "minimum": 2252905.999,
            "name": "Y",
            "position": 1,
            "stddev": 126.2593901,
            "variance": 15941.43359
          },
          {
            "average": 6.992239633,
            "count": 4054241,
            "maximum": 606.510667,
            "minimum": 3.010667001,
            "name": "Z",
            "position": 2,
            "stddev": 4.741778993,
            "variance": 22.48446802
          },
          {
            "average": 44879.19246,
            "count": 4054241,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11054.78225,
            "variance": 122208210.6
          },
          {
            "average": 1.000598632,
            "count": 4054241,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02445964394,
            "variance": 0.0005982741819
          },
          {
            "average": 1.001198991,
            "count": 4054241,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03460569451,
            "variance": 0.001197554092
          },
          {
            "average": 0.5049847801,
            "count": 4054241,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499975213,
            "variance": 0.2499752136
          },
          {
            "average": 0.0003598700719,
            "count": 4054241,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01896683037,
            "variance": 0.0003597406541
          },
          {
            "average": 1.245543617,
            "count": 4054241,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8613209068,
            "variance": 0.7418737045
          },
          {
            "average": -0.6042829168,
            "count": 4054241,
            "maximum": 19.52400017,
            "minimum": -20.02199936,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53614601,
            "variance": 111.0103728
          },
          {
            "average": 0.5316284848,
            "count": 4054241,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989986978,
            "variance": 0.2489997004
          },
          {
            "average": 314.2869886,
            "count": 4054241,
            "maximum": 355,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.75761466,
            "variance": 351.8481076
          },
          {
            "average": 216314269.2,
            "count": 4054241,
            "maximum": 216316762,
            "minimum": 216313513.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1038.048146,
            "variance": 1077543.953
          },
          {
            "average": 0.5316284848,
            "count": 4054241,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989986978,
            "variance": 0.2489997004
          },
          {
            "average": 0,
            "count": 4054241,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4054241,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4054241,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1971007644,
            "count": 4054241,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3978091151,
            "variance": 0.1582520921
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114812.3248,
          2252905.999,
          3.010667001,
          115304.8648,
          2253382.379,
          606.510667
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114812.32483147651,
                2252905.9991416507,
                3.010667000668263
              ],
              [
                114812.32483147651,
                2253382.3791416506,
                3.010667000668263
              ],
              [
                115304.86483147652,
                2253382.3791416506,
                606.5106670006683
              ],
              [
                115304.86483147652,
                2252905.9991416507,
                606.5106670006683
              ],
              [
                114812.32483147651,
                2252905.9991416507,
                3.010667000668263
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:02+00:00",
        "end_time": "2018-07-22T16:51:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1412.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1412.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1412.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1412.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0132138,
            70.23234357,
            3.010667001,
            -150.9998585,
            70.23689005,
            606.510667
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0132137825897,
                  70.232546125717,
                  3.010667000668263
                ],
                [
                  -151.01265669816306,
                  70.23689004617894,
                  3.010667000668263
                ],
                [
                  -150.99985851405395,
                  70.23668744535094,
                  606.5106670006683
                ],
                [
                  -151.00041797862386,
                  70.23234356749857,
                  606.5106670006683
                ],
                [
                  -151.0132137825897,
                  70.232546125717,
                  3.010667000668263
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1412.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1412.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:02Z",
            "pc:count": 4054241,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115060.3424,
                "count": 4054241,
                "maximum": 115304.8648,
                "minimum": 114812.3248,
                "name": "X",
                "position": 0,
                "stddev": 137.1249834,
                "variance": 18803.26107
              },
              {
                "average": 2253152.497,
                "count": 4054241,
                "maximum": 2253382.379,
                "minimum": 2252905.999,
                "name": "Y",
                "position": 1,
                "stddev": 126.2593901,
                "variance": 15941.43359
              },
              {
                "average": 6.992239633,
                "count": 4054241,
                "maximum": 606.510667,
                "minimum": 3.010667001,
                "name": "Z",
                "position": 2,
                "stddev": 4.741778993,
                "variance": 22.48446802
              },
              {
                "average": 44879.19246,
                "count": 4054241,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11054.78225,
                "variance": 122208210.6
              },
              {
                "average": 1.000598632,
                "count": 4054241,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02445964394,
                "variance": 0.0005982741819
              },
              {
                "average": 1.001198991,
                "count": 4054241,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03460569451,
                "variance": 0.001197554092
              },
              {
                "average": 0.5049847801,
                "count": 4054241,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499975213,
                "variance": 0.2499752136
              },
              {
                "average": 0.0003598700719,
                "count": 4054241,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01896683037,
                "variance": 0.0003597406541
              },
              {
                "average": 1.245543617,
                "count": 4054241,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8613209068,
                "variance": 0.7418737045
              },
              {
                "average": -0.6042829168,
                "count": 4054241,
                "maximum": 19.52400017,
                "minimum": -20.02199936,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53614601,
                "variance": 111.0103728
              },
              {
                "average": 0.5316284848,
                "count": 4054241,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989986978,
                "variance": 0.2489997004
              },
              {
                "average": 314.2869886,
                "count": 4054241,
                "maximum": 355,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.75761466,
                "variance": 351.8481076
              },
              {
                "average": 216314269.2,
                "count": 4054241,
                "maximum": 216316762,
                "minimum": 216313513.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1038.048146,
                "variance": 1077543.953
              },
              {
                "average": 0.5316284848,
                "count": 4054241,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989986978,
                "variance": 0.2489997004
              },
              {
                "average": 0,
                "count": 4054241,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4054241,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4054241,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1971007644,
                "count": 4054241,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3978091151,
                "variance": 0.1582520921
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114812.3248,
              2252905.999,
              3.010667001,
              115304.8648,
              2253382.379,
              606.510667
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114812.32483147651,
                    2252905.9991416507,
                    3.010667000668263
                  ],
                  [
                    114812.32483147651,
                    2253382.3791416506,
                    3.010667000668263
                  ],
                  [
                    115304.86483147652,
                    2253382.3791416506,
                    606.5106670006683
                  ],
                  [
                    115304.86483147652,
                    2252905.9991416507,
                    606.5106670006683
                  ],
                  [
                    114812.32483147651,
                    2252905.9991416507,
                    3.010667000668263
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:02+00:00",
            "end_time": "2018-07-22T16:51:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0934.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97495414276355,
              70.19176922287872,
              4.175943569816816
            ],
            [
              -150.97439088913498,
              70.19611223907955,
              4.175943569816816
            ],
            [
              -150.96161850848023,
              70.19590714725432,
              7.815943569816817
            ],
            [
              -150.96218413321765,
              70.19156417408125,
              7.815943569816817
            ],
            [
              -150.97495414276355,
              70.19176922287872,
              4.175943569816816
            ]
          ]
        ]
      },
      "bbox": [
        -150.9749541,
        70.19156417,
        4.17594357,
        -150.9616185,
        70.19611224,
        7.81594357
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:06Z",
        "pc:count": 4514806,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116735.9471,
            "count": 4514806,
            "maximum": 116977.8804,
            "minimum": 116485.4604,
            "name": "X",
            "position": 0,
            "stddev": 133.5919435,
            "variance": 17846.80736
          },
          {
            "average": 2248756.946,
            "count": 4514806,
            "maximum": 2248985.732,
            "minimum": 2248509.332,
            "name": "Y",
            "position": 1,
            "stddev": 125.227338,
            "variance": 15681.88618
          },
          {
            "average": 6.334668206,
            "count": 4514806,
            "maximum": 7.81594357,
            "minimum": 4.17594357,
            "name": "Z",
            "position": 2,
            "stddev": 0.4469125108,
            "variance": 0.1997307923
          },
          {
            "average": 39550.36611,
            "count": 4514806,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 13821.35966,
            "variance": 191029982.8
          },
          {
            "average": 1.000000221,
            "count": 4514806,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004706309165,
            "variance": 2.214934595e-07
          },
          {
            "average": 1.000000443,
            "count": 4514806,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006655725512,
            "variance": 4.429868209e-07
          },
          {
            "average": 0.5048622244,
            "count": 4514806,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999764136,
            "variance": 0.2499764141
          },
          {
            "average": 0.0004660222388,
            "count": 4514806,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0215825199,
            "variance": 0.0004658051653
          },
          {
            "average": 1.427453804,
            "count": 4514806,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.357705033,
            "variance": 1.843362958
          },
          {
            "average": -0.973320632,
            "count": 4514806,
            "maximum": 20.61000061,
            "minimum": -20.04599953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.66298305,
            "variance": 136.0251737
          },
          {
            "average": 0.5212890654,
            "count": 4514806,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995466254,
            "variance": 0.249546831
          },
          {
            "average": 321.4829539,
            "count": 4514806,
            "maximum": 364,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 28.78992929,
            "variance": 828.8600286
          },
          {
            "average": 216315600.8,
            "count": 4514806,
            "maximum": 216321506.6,
            "minimum": 216312541.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3848.853741,
            "variance": 14813675.12
          },
          {
            "average": 0.5212890654,
            "count": 4514806,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995466254,
            "variance": 0.249546831
          },
          {
            "average": 0,
            "count": 4514806,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4514806,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4514806,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2207897748,
            "count": 4514806,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4147790837,
            "variance": 0.1720416882
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116485.4604,
          2248509.332,
          4.17594357,
          116977.8804,
          2248985.732,
          7.81594357
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116485.46042047603,
                2248509.332387399,
                4.175943569816816
              ],
              [
                116485.46042047603,
                2248985.7323873993,
                4.175943569816816
              ],
              [
                116977.88042047604,
                2248985.7323873993,
                7.815943569816817
              ],
              [
                116977.88042047604,
                2248509.332387399,
                7.815943569816817
              ],
              [
                116485.46042047603,
                2248509.332387399,
                4.175943569816816
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:06+00:00",
        "end_time": "2018-07-22T16:35:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0934.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0934.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0934.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0934.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9749541,
            70.19156417,
            4.17594357,
            -150.9616185,
            70.19611224,
            7.81594357
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97495414276355,
                  70.19176922287872,
                  4.175943569816816
                ],
                [
                  -150.97439088913498,
                  70.19611223907955,
                  4.175943569816816
                ],
                [
                  -150.96161850848023,
                  70.19590714725432,
                  7.815943569816817
                ],
                [
                  -150.96218413321765,
                  70.19156417408125,
                  7.815943569816817
                ],
                [
                  -150.97495414276355,
                  70.19176922287872,
                  4.175943569816816
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0934.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0934.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:06Z",
            "pc:count": 4514806,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116735.9471,
                "count": 4514806,
                "maximum": 116977.8804,
                "minimum": 116485.4604,
                "name": "X",
                "position": 0,
                "stddev": 133.5919435,
                "variance": 17846.80736
              },
              {
                "average": 2248756.946,
                "count": 4514806,
                "maximum": 2248985.732,
                "minimum": 2248509.332,
                "name": "Y",
                "position": 1,
                "stddev": 125.227338,
                "variance": 15681.88618
              },
              {
                "average": 6.334668206,
                "count": 4514806,
                "maximum": 7.81594357,
                "minimum": 4.17594357,
                "name": "Z",
                "position": 2,
                "stddev": 0.4469125108,
                "variance": 0.1997307923
              },
              {
                "average": 39550.36611,
                "count": 4514806,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 13821.35966,
                "variance": 191029982.8
              },
              {
                "average": 1.000000221,
                "count": 4514806,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004706309165,
                "variance": 2.214934595e-07
              },
              {
                "average": 1.000000443,
                "count": 4514806,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006655725512,
                "variance": 4.429868209e-07
              },
              {
                "average": 0.5048622244,
                "count": 4514806,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999764136,
                "variance": 0.2499764141
              },
              {
                "average": 0.0004660222388,
                "count": 4514806,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0215825199,
                "variance": 0.0004658051653
              },
              {
                "average": 1.427453804,
                "count": 4514806,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.357705033,
                "variance": 1.843362958
              },
              {
                "average": -0.973320632,
                "count": 4514806,
                "maximum": 20.61000061,
                "minimum": -20.04599953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.66298305,
                "variance": 136.0251737
              },
              {
                "average": 0.5212890654,
                "count": 4514806,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995466254,
                "variance": 0.249546831
              },
              {
                "average": 321.4829539,
                "count": 4514806,
                "maximum": 364,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 28.78992929,
                "variance": 828.8600286
              },
              {
                "average": 216315600.8,
                "count": 4514806,
                "maximum": 216321506.6,
                "minimum": 216312541.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3848.853741,
                "variance": 14813675.12
              },
              {
                "average": 0.5212890654,
                "count": 4514806,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995466254,
                "variance": 0.249546831
              },
              {
                "average": 0,
                "count": 4514806,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4514806,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4514806,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2207897748,
                "count": 4514806,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4147790837,
                "variance": 0.1720416882
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116485.4604,
              2248509.332,
              4.17594357,
              116977.8804,
              2248985.732,
              7.81594357
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116485.46042047603,
                    2248509.332387399,
                    4.175943569816816
                  ],
                  [
                    116485.46042047603,
                    2248985.7323873993,
                    4.175943569816816
                  ],
                  [
                    116977.88042047604,
                    2248985.7323873993,
                    7.815943569816817
                  ],
                  [
                    116977.88042047604,
                    2248509.332387399,
                    7.815943569816817
                  ],
                  [
                    116485.46042047603,
                    2248509.332387399,
                    4.175943569816816
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:06+00:00",
            "end_time": "2018-07-22T16:35:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1258.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02470895734135,
              70.22018429667978,
              9.465118281402624
            ],
            [
              -151.0241542864371,
              70.22452813740225,
              9.465118281402624
            ],
            [
              -151.01136382624395,
              70.22432634454917,
              630.3451182814026
            ],
            [
              -151.01192087474973,
              70.21998254623666,
              630.3451182814026
            ],
            [
              -151.02470895734135,
              70.22018429667978,
              9.465118281402624
            ]
          ]
        ]
      },
      "bbox": [
        -151.024709,
        70.21998255,
        9.465118281,
        -151.0113638,
        70.22452814,
        630.3451183
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:40Z",
        "pc:count": 3867213,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114673.0936,
            "count": 3867213,
            "maximum": 114923.9022,
            "minimum": 114431.4022,
            "name": "X",
            "position": 0,
            "stddev": 137.4922434,
            "variance": 18904.11699
          },
          {
            "average": 2251769.361,
            "count": 3867213,
            "maximum": 2252009.561,
            "minimum": 2251533.161,
            "name": "Y",
            "position": 1,
            "stddev": 136.4366233,
            "variance": 18614.95217
          },
          {
            "average": 10.03441469,
            "count": 3867213,
            "maximum": 630.3451183,
            "minimum": 9.465118281,
            "name": "Z",
            "position": 2,
            "stddev": 1.756209926,
            "variance": 3.084273305
          },
          {
            "average": 37576.80712,
            "count": 3867213,
            "maximum": 65535,
            "minimum": 773,
            "name": "Intensity",
            "position": 3,
            "stddev": 13149.72103,
            "variance": 172915163.2
          },
          {
            "average": 1.000004396,
            "count": 3867213,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002096643132,
            "variance": 4.395912422e-06
          },
          {
            "average": 1.000009568,
            "count": 3867213,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003093141544,
            "variance": 9.567524614e-06
          },
          {
            "average": 0.5023995317,
            "count": 3867213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999943069,
            "variance": 0.2499943069
          },
          {
            "average": 0.0004856210403,
            "count": 3867213,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02203146246,
            "variance": 0.000485385338
          },
          {
            "average": 1.158513638,
            "count": 3867213,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3676530213,
            "variance": 0.1351687441
          },
          {
            "average": -1.686975023,
            "count": 3867213,
            "maximum": 20.48399925,
            "minimum": -19.98600006,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62806722,
            "variance": 112.9558128
          },
          {
            "average": 0.4713727948,
            "count": 3867213,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499179875,
            "variance": 0.2491805476
          },
          {
            "average": 316.8239288,
            "count": 3867213,
            "maximum": 358,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.9531859,
            "variance": 398.1296275
          },
          {
            "average": 216314707.1,
            "count": 3867213,
            "maximum": 216317880.2,
            "minimum": 216313687.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1264.125075,
            "variance": 1598012.206
          },
          {
            "average": 0.4713727948,
            "count": 3867213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499179875,
            "variance": 0.2491805476
          },
          {
            "average": 0,
            "count": 3867213,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3867213,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3867213,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2414358868,
            "count": 3867213,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4279540241,
            "variance": 0.1831446467
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114431.4022,
          2251533.161,
          9.465118281,
          114923.9022,
          2252009.561,
          630.3451183
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114431.40224187248,
                2251533.1607796336,
                9.465118281402624
              ],
              [
                114431.40224187248,
                2252009.560779634,
                9.465118281402624
              ],
              [
                114923.90224187248,
                2252009.560779634,
                630.3451182814026
              ],
              [
                114923.90224187248,
                2251533.1607796336,
                630.3451182814026
              ],
              [
                114431.40224187248,
                2251533.1607796336,
                9.465118281402624
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:40+00:00",
        "end_time": "2018-07-22T16:54:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1258.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1258.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1258.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1258.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.024709,
            70.21998255,
            9.465118281,
            -151.0113638,
            70.22452814,
            630.3451183
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02470895734135,
                  70.22018429667978,
                  9.465118281402624
                ],
                [
                  -151.0241542864371,
                  70.22452813740225,
                  9.465118281402624
                ],
                [
                  -151.01136382624395,
                  70.22432634454917,
                  630.3451182814026
                ],
                [
                  -151.01192087474973,
                  70.21998254623666,
                  630.3451182814026
                ],
                [
                  -151.02470895734135,
                  70.22018429667978,
                  9.465118281402624
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1258.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1258.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:40Z",
            "pc:count": 3867213,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114673.0936,
                "count": 3867213,
                "maximum": 114923.9022,
                "minimum": 114431.4022,
                "name": "X",
                "position": 0,
                "stddev": 137.4922434,
                "variance": 18904.11699
              },
              {
                "average": 2251769.361,
                "count": 3867213,
                "maximum": 2252009.561,
                "minimum": 2251533.161,
                "name": "Y",
                "position": 1,
                "stddev": 136.4366233,
                "variance": 18614.95217
              },
              {
                "average": 10.03441469,
                "count": 3867213,
                "maximum": 630.3451183,
                "minimum": 9.465118281,
                "name": "Z",
                "position": 2,
                "stddev": 1.756209926,
                "variance": 3.084273305
              },
              {
                "average": 37576.80712,
                "count": 3867213,
                "maximum": 65535,
                "minimum": 773,
                "name": "Intensity",
                "position": 3,
                "stddev": 13149.72103,
                "variance": 172915163.2
              },
              {
                "average": 1.000004396,
                "count": 3867213,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002096643132,
                "variance": 4.395912422e-06
              },
              {
                "average": 1.000009568,
                "count": 3867213,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003093141544,
                "variance": 9.567524614e-06
              },
              {
                "average": 0.5023995317,
                "count": 3867213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999943069,
                "variance": 0.2499943069
              },
              {
                "average": 0.0004856210403,
                "count": 3867213,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02203146246,
                "variance": 0.000485385338
              },
              {
                "average": 1.158513638,
                "count": 3867213,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3676530213,
                "variance": 0.1351687441
              },
              {
                "average": -1.686975023,
                "count": 3867213,
                "maximum": 20.48399925,
                "minimum": -19.98600006,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62806722,
                "variance": 112.9558128
              },
              {
                "average": 0.4713727948,
                "count": 3867213,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499179875,
                "variance": 0.2491805476
              },
              {
                "average": 316.8239288,
                "count": 3867213,
                "maximum": 358,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.9531859,
                "variance": 398.1296275
              },
              {
                "average": 216314707.1,
                "count": 3867213,
                "maximum": 216317880.2,
                "minimum": 216313687.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1264.125075,
                "variance": 1598012.206
              },
              {
                "average": 0.4713727948,
                "count": 3867213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499179875,
                "variance": 0.2491805476
              },
              {
                "average": 0,
                "count": 3867213,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3867213,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3867213,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2414358868,
                "count": 3867213,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4279540241,
                "variance": 0.1831446467
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114431.4022,
              2251533.161,
              9.465118281,
              114923.9022,
              2252009.561,
              630.3451183
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114431.40224187248,
                    2251533.1607796336,
                    9.465118281402624
                  ],
                  [
                    114431.40224187248,
                    2252009.560779634,
                    9.465118281402624
                  ],
                  [
                    114923.90224187248,
                    2252009.560779634,
                    630.3451182814026
                  ],
                  [
                    114923.90224187248,
                    2251533.1607796336,
                    630.3451182814026
                  ],
                  [
                    114431.40224187248,
                    2251533.1607796336,
                    9.465118281402624
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:40+00:00",
            "end_time": "2018-07-22T16:54:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1313.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97650458618887,
              70.22455131472016,
              5.232198668568344
            ],
            [
              -150.97594073463551,
              70.22889584680873,
              5.232198668568344
            ],
            [
              -150.96314829970757,
              70.22869078884194,
              1036.3321986685683
            ],
            [
              -150.96371452983885,
              70.22434629986684,
              1036.3321986685683
            ],
            [
              -150.97650458618887,
              70.22455131472016,
              5.232198668568344
            ]
          ]
        ]
      },
      "bbox": [
        -150.9765046,
        70.2243463,
        5.232198669,
        -150.9631483,
        70.22889585,
        1036.332199
      ],
      "properties": {
        "datetime": "2018-07-22T17:52:42Z",
        "pc:count": 3202689,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116471.2395,
            "count": 3202689,
            "maximum": 116754.8238,
            "minimum": 116262.3238,
            "name": "X",
            "position": 0,
            "stddev": 126.0054,
            "variance": 15877.36082
          },
          {
            "average": 2252322.127,
            "count": 3202689,
            "maximum": 2252571.338,
            "minimum": 2252094.858,
            "name": "Y",
            "position": 1,
            "stddev": 134.4023474,
            "variance": 18063.991
          },
          {
            "average": 6.043770407,
            "count": 3202689,
            "maximum": 1036.332199,
            "minimum": 5.232198669,
            "name": "Z",
            "position": 2,
            "stddev": 0.5963645959,
            "variance": 0.3556507312
          },
          {
            "average": 36189.9773,
            "count": 3202689,
            "maximum": 65535,
            "minimum": 319,
            "name": "Intensity",
            "position": 3,
            "stddev": 16682.43128,
            "variance": 278303513.6
          },
          {
            "average": 1,
            "count": 3202689,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3202689,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5054212257,
            "count": 3202689,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999706875,
            "variance": 0.2499706884
          },
          {
            "average": 0.0004252676423,
            "count": 3202689,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0206176362,
            "variance": 0.0004250869224
          },
          {
            "average": 3.093058364,
            "count": 3202689,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.351191608,
            "variance": 11.23048519
          },
          {
            "average": -1.740425164,
            "count": 3202689,
            "maximum": 16.44599915,
            "minimum": -19.87199974,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.813645759,
            "variance": 96.30764308
          },
          {
            "average": 0.5134095131,
            "count": 3202689,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998202306,
            "variance": 0.249820263
          },
          {
            "average": 312.5765355,
            "count": 3202689,
            "maximum": 356,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.30835375,
            "variance": 454.0459395
          },
          {
            "average": 216313790.9,
            "count": 3202689,
            "maximum": 216317162,
            "minimum": 216312602.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1554.559957,
            "variance": 2416656.661
          },
          {
            "average": 0.5134095131,
            "count": 3202689,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998202306,
            "variance": 0.249820263
          },
          {
            "average": 0,
            "count": 3202689,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3202689,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3202689,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1497091975,
            "count": 3202689,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3567862013,
            "variance": 0.1272963934
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116262.3238,
          2252094.858,
          5.232198669,
          116754.8238,
          2252571.338,
          1036.332199
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116262.32379999691,
                2252094.8584993375,
                5.232198668568344
              ],
              [
                116262.32379999691,
                2252571.338499338,
                5.232198668568344
              ],
              [
                116754.82379999691,
                2252571.338499338,
                1036.3321986685683
              ],
              [
                116754.82379999691,
                2252094.8584993375,
                1036.3321986685683
              ],
              [
                116262.32379999691,
                2252094.8584993375,
                5.232198668568344
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:52:42+00:00",
        "end_time": "2018-07-22T16:36:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1313.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1313.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1313.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1313.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9765046,
            70.2243463,
            5.232198669,
            -150.9631483,
            70.22889585,
            1036.332199
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97650458618887,
                  70.22455131472016,
                  5.232198668568344
                ],
                [
                  -150.97594073463551,
                  70.22889584680873,
                  5.232198668568344
                ],
                [
                  -150.96314829970757,
                  70.22869078884194,
                  1036.3321986685683
                ],
                [
                  -150.96371452983885,
                  70.22434629986684,
                  1036.3321986685683
                ],
                [
                  -150.97650458618887,
                  70.22455131472016,
                  5.232198668568344
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1313.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1313.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:52:42Z",
            "pc:count": 3202689,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116471.2395,
                "count": 3202689,
                "maximum": 116754.8238,
                "minimum": 116262.3238,
                "name": "X",
                "position": 0,
                "stddev": 126.0054,
                "variance": 15877.36082
              },
              {
                "average": 2252322.127,
                "count": 3202689,
                "maximum": 2252571.338,
                "minimum": 2252094.858,
                "name": "Y",
                "position": 1,
                "stddev": 134.4023474,
                "variance": 18063.991
              },
              {
                "average": 6.043770407,
                "count": 3202689,
                "maximum": 1036.332199,
                "minimum": 5.232198669,
                "name": "Z",
                "position": 2,
                "stddev": 0.5963645959,
                "variance": 0.3556507312
              },
              {
                "average": 36189.9773,
                "count": 3202689,
                "maximum": 65535,
                "minimum": 319,
                "name": "Intensity",
                "position": 3,
                "stddev": 16682.43128,
                "variance": 278303513.6
              },
              {
                "average": 1,
                "count": 3202689,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3202689,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5054212257,
                "count": 3202689,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999706875,
                "variance": 0.2499706884
              },
              {
                "average": 0.0004252676423,
                "count": 3202689,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0206176362,
                "variance": 0.0004250869224
              },
              {
                "average": 3.093058364,
                "count": 3202689,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.351191608,
                "variance": 11.23048519
              },
              {
                "average": -1.740425164,
                "count": 3202689,
                "maximum": 16.44599915,
                "minimum": -19.87199974,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.813645759,
                "variance": 96.30764308
              },
              {
                "average": 0.5134095131,
                "count": 3202689,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998202306,
                "variance": 0.249820263
              },
              {
                "average": 312.5765355,
                "count": 3202689,
                "maximum": 356,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.30835375,
                "variance": 454.0459395
              },
              {
                "average": 216313790.9,
                "count": 3202689,
                "maximum": 216317162,
                "minimum": 216312602.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1554.559957,
                "variance": 2416656.661
              },
              {
                "average": 0.5134095131,
                "count": 3202689,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998202306,
                "variance": 0.249820263
              },
              {
                "average": 0,
                "count": 3202689,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3202689,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3202689,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1497091975,
                "count": 3202689,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3567862013,
                "variance": 0.1272963934
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116262.3238,
              2252094.858,
              5.232198669,
              116754.8238,
              2252571.338,
              1036.332199
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116262.32379999691,
                    2252094.8584993375,
                    5.232198668568344
                  ],
                  [
                    116262.32379999691,
                    2252571.338499338,
                    5.232198668568344
                  ],
                  [
                    116754.82379999691,
                    2252571.338499338,
                    1036.3321986685683
                  ],
                  [
                    116754.82379999691,
                    2252094.8584993375,
                    1036.3321986685683
                  ],
                  [
                    116262.32379999691,
                    2252094.8584993375,
                    5.232198668568344
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:52:42+00:00",
            "end_time": "2018-07-22T16:36:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1108.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.98782190795936,
              70.20809391294182,
              2.277093056931562
            ],
            [
              -150.98726060895964,
              70.21243772081225,
              2.277093056931562
            ],
            [
              -150.9744796951797,
              70.2122334886474,
              1274.6170930569315
            ],
            [
              -150.97504336879513,
              70.20788972367068,
              1274.6170930569315
            ],
            [
              -150.98782190795936,
              70.20809391294182,
              2.277093056931562
            ]
          ]
        ]
      },
      "bbox": [
        -150.9878219,
        70.20788972,
        2.277093057,
        -150.9744797,
        70.21243772,
        1274.617093
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:20Z",
        "pc:count": 3933695,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116146.3544,
            "count": 3933695,
            "maximum": 116401.5961,
            "minimum": 115909.1961,
            "name": "X",
            "position": 0,
            "stddev": 131.3482415,
            "variance": 17252.36053
          },
          {
            "average": 2250520.47,
            "count": 3933695,
            "maximum": 2250750.204,
            "minimum": 2250273.764,
            "name": "Y",
            "position": 1,
            "stddev": 133.1795524,
            "variance": 17736.79318
          },
          {
            "average": 8.402526206,
            "count": 3933695,
            "maximum": 1274.617093,
            "minimum": 2.277093057,
            "name": "Z",
            "position": 2,
            "stddev": 6.305134475,
            "variance": 39.75472075
          },
          {
            "average": 50804.48107,
            "count": 3933695,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9085.385943,
            "variance": 82544237.73
          },
          {
            "average": 1.000077535,
            "count": 3933695,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008805069652,
            "variance": 7.752925158e-05
          },
          {
            "average": 1.000155325,
            "count": 3933695,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01246196673,
            "variance": 0.0001553006148
          },
          {
            "average": 0.5007960709,
            "count": 3933695,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999994298,
            "variance": 0.2499994298
          },
          {
            "average": 0.0005386792825,
            "count": 3933695,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02320321624,
            "variance": 0.000538389244
          },
          {
            "average": 1.185108912,
            "count": 3933695,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4165390537,
            "variance": 0.1735047832
          },
          {
            "average": 0.2952150912,
            "count": 3933695,
            "maximum": 20.61000061,
            "minimum": -19.96800041,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.21418778,
            "variance": 125.7580076
          },
          {
            "average": 0.4869538691,
            "count": 3933695,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499829833,
            "variance": 0.249829862
          },
          {
            "average": 318.4495974,
            "count": 3933695,
            "maximum": 361,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.98252041,
            "variance": 624.1263262
          },
          {
            "average": 216314586.9,
            "count": 3933695,
            "maximum": 216320260.8,
            "minimum": 216312817.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2194.353841,
            "variance": 4815188.778
          },
          {
            "average": 0.4869538691,
            "count": 3933695,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499829833,
            "variance": 0.249829862
          },
          {
            "average": 0,
            "count": 3933695,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3933695,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3933695,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2628948101,
            "count": 3933695,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4402058362,
            "variance": 0.1937811782
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115909.1961,
          2250273.764,
          2.277093057,
          116401.5961,
          2250750.204,
          1274.617093
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115909.19612457196,
                2250273.76406154,
                2.277093056931562
              ],
              [
                115909.19612457196,
                2250750.2040615403,
                2.277093056931562
              ],
              [
                116401.59612457195,
                2250750.2040615403,
                1274.6170930569315
              ],
              [
                116401.59612457195,
                2250273.76406154,
                1274.6170930569315
              ],
              [
                115909.19612457196,
                2250273.76406154,
                2.277093056931562
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:20+00:00",
        "end_time": "2018-07-22T16:40:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1108.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1108.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1108.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1108.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9878219,
            70.20788972,
            2.277093057,
            -150.9744797,
            70.21243772,
            1274.617093
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.98782190795936,
                  70.20809391294182,
                  2.277093056931562
                ],
                [
                  -150.98726060895964,
                  70.21243772081225,
                  2.277093056931562
                ],
                [
                  -150.9744796951797,
                  70.2122334886474,
                  1274.6170930569315
                ],
                [
                  -150.97504336879513,
                  70.20788972367068,
                  1274.6170930569315
                ],
                [
                  -150.98782190795936,
                  70.20809391294182,
                  2.277093056931562
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1108.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1108.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:20Z",
            "pc:count": 3933695,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116146.3544,
                "count": 3933695,
                "maximum": 116401.5961,
                "minimum": 115909.1961,
                "name": "X",
                "position": 0,
                "stddev": 131.3482415,
                "variance": 17252.36053
              },
              {
                "average": 2250520.47,
                "count": 3933695,
                "maximum": 2250750.204,
                "minimum": 2250273.764,
                "name": "Y",
                "position": 1,
                "stddev": 133.1795524,
                "variance": 17736.79318
              },
              {
                "average": 8.402526206,
                "count": 3933695,
                "maximum": 1274.617093,
                "minimum": 2.277093057,
                "name": "Z",
                "position": 2,
                "stddev": 6.305134475,
                "variance": 39.75472075
              },
              {
                "average": 50804.48107,
                "count": 3933695,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9085.385943,
                "variance": 82544237.73
              },
              {
                "average": 1.000077535,
                "count": 3933695,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008805069652,
                "variance": 7.752925158e-05
              },
              {
                "average": 1.000155325,
                "count": 3933695,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01246196673,
                "variance": 0.0001553006148
              },
              {
                "average": 0.5007960709,
                "count": 3933695,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999994298,
                "variance": 0.2499994298
              },
              {
                "average": 0.0005386792825,
                "count": 3933695,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02320321624,
                "variance": 0.000538389244
              },
              {
                "average": 1.185108912,
                "count": 3933695,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4165390537,
                "variance": 0.1735047832
              },
              {
                "average": 0.2952150912,
                "count": 3933695,
                "maximum": 20.61000061,
                "minimum": -19.96800041,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.21418778,
                "variance": 125.7580076
              },
              {
                "average": 0.4869538691,
                "count": 3933695,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499829833,
                "variance": 0.249829862
              },
              {
                "average": 318.4495974,
                "count": 3933695,
                "maximum": 361,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.98252041,
                "variance": 624.1263262
              },
              {
                "average": 216314586.9,
                "count": 3933695,
                "maximum": 216320260.8,
                "minimum": 216312817.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2194.353841,
                "variance": 4815188.778
              },
              {
                "average": 0.4869538691,
                "count": 3933695,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499829833,
                "variance": 0.249829862
              },
              {
                "average": 0,
                "count": 3933695,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3933695,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3933695,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2628948101,
                "count": 3933695,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4402058362,
                "variance": 0.1937811782
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115909.1961,
              2250273.764,
              2.277093057,
              116401.5961,
              2250750.204,
              1274.617093
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115909.19612457196,
                    2250273.76406154,
                    2.277093056931562
                  ],
                  [
                    115909.19612457196,
                    2250750.2040615403,
                    2.277093056931562
                  ],
                  [
                    116401.59612457195,
                    2250750.2040615403,
                    1274.6170930569315
                  ],
                  [
                    116401.59612457195,
                    2250273.76406154,
                    1274.6170930569315
                  ],
                  [
                    115909.19612457196,
                    2250273.76406154,
                    2.277093056931562
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:20+00:00",
            "end_time": "2018-07-22T16:40:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1155.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0363999794578,
              70.21191915338312,
              8.115747062150831
            ],
            [
              -151.03584754325212,
              70.21626392503259,
              8.115747062150831
            ],
            [
              -151.0230609945068,
              70.21606292398093,
              1262.215747062151
            ],
            [
              -151.02361580739984,
              70.21171819456487,
              1262.215747062151
            ],
            [
              -151.0363999794578,
              70.21191915338312,
              8.115747062150831
            ]
          ]
        ]
      },
      "bbox": [
        -151.0364,
        70.21171819,
        8.115747062,
        -151.023061,
        70.21626393,
        1262.215747
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:02Z",
        "pc:count": 4508261,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114276.5483,
            "count": 4508261,
            "maximum": 114514.9761,
            "minimum": 114022.4561,
            "name": "X",
            "position": 0,
            "stddev": 129.3098145,
            "variance": 16721.02813
          },
          {
            "average": 2250843.146,
            "count": 4508261,
            "maximum": 2251084.896,
            "minimum": 2250608.376,
            "name": "Y",
            "position": 1,
            "stddev": 128.525192,
            "variance": 16518.72499
          },
          {
            "average": 9.861149999,
            "count": 4508261,
            "maximum": 1262.215747,
            "minimum": 8.115747062,
            "name": "Z",
            "position": 2,
            "stddev": 1.721051218,
            "variance": 2.962017293
          },
          {
            "average": 45535.09234,
            "count": 4508261,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8290.951144,
            "variance": 68739870.88
          },
          {
            "average": 1.000014862,
            "count": 4508261,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003855047174,
            "variance": 1.486138871e-05
          },
          {
            "average": 1.000029723,
            "count": 4508261,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005451819484,
            "variance": 2.972233569e-05
          },
          {
            "average": 0.4991800608,
            "count": 4508261,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999993832,
            "variance": 0.2499993832
          },
          {
            "average": 0.0003447005397,
            "count": 4508261,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01856291458,
            "variance": 0.0003445817977
          },
          {
            "average": 1.178933961,
            "count": 4508261,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.396662391,
            "variance": 0.1573410524
          },
          {
            "average": 1.634781023,
            "count": 4508261,
            "maximum": 20.45999908,
            "minimum": -16.9260006,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38654636,
            "variance": 107.8803452
          },
          {
            "average": 0.5128154736,
            "count": 4508261,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998357921,
            "variance": 0.2498358191
          },
          {
            "average": 323.6210359,
            "count": 4508261,
            "maximum": 359,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.18326018,
            "variance": 537.4635524
          },
          {
            "average": 216315421,
            "count": 4508261,
            "maximum": 216318082.2,
            "minimum": 216313923.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1593.495599,
            "variance": 2539228.224
          },
          {
            "average": 0.5128154736,
            "count": 4508261,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998357921,
            "variance": 0.2498358191
          },
          {
            "average": 0,
            "count": 4508261,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4508261,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4508261,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1906344819,
            "count": 4508261,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3928014899,
            "variance": 0.1542930104
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114022.4561,
          2250608.376,
          8.115747062,
          114514.9761,
          2251084.896,
          1262.215747
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114022.45614527682,
                2250608.376471119,
                8.115747062150831
              ],
              [
                114022.45614527682,
                2251084.8964711186,
                8.115747062150831
              ],
              [
                114514.97614527681,
                2251084.8964711186,
                1262.215747062151
              ],
              [
                114514.97614527681,
                2250608.376471119,
                1262.215747062151
              ],
              [
                114022.45614527682,
                2250608.376471119,
                8.115747062150831
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:02+00:00",
        "end_time": "2018-07-22T16:58:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1155.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1155.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1155.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1155.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0364,
            70.21171819,
            8.115747062,
            -151.023061,
            70.21626393,
            1262.215747
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0363999794578,
                  70.21191915338312,
                  8.115747062150831
                ],
                [
                  -151.03584754325212,
                  70.21626392503259,
                  8.115747062150831
                ],
                [
                  -151.0230609945068,
                  70.21606292398093,
                  1262.215747062151
                ],
                [
                  -151.02361580739984,
                  70.21171819456487,
                  1262.215747062151
                ],
                [
                  -151.0363999794578,
                  70.21191915338312,
                  8.115747062150831
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1155.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1155.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:02Z",
            "pc:count": 4508261,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114276.5483,
                "count": 4508261,
                "maximum": 114514.9761,
                "minimum": 114022.4561,
                "name": "X",
                "position": 0,
                "stddev": 129.3098145,
                "variance": 16721.02813
              },
              {
                "average": 2250843.146,
                "count": 4508261,
                "maximum": 2251084.896,
                "minimum": 2250608.376,
                "name": "Y",
                "position": 1,
                "stddev": 128.525192,
                "variance": 16518.72499
              },
              {
                "average": 9.861149999,
                "count": 4508261,
                "maximum": 1262.215747,
                "minimum": 8.115747062,
                "name": "Z",
                "position": 2,
                "stddev": 1.721051218,
                "variance": 2.962017293
              },
              {
                "average": 45535.09234,
                "count": 4508261,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8290.951144,
                "variance": 68739870.88
              },
              {
                "average": 1.000014862,
                "count": 4508261,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003855047174,
                "variance": 1.486138871e-05
              },
              {
                "average": 1.000029723,
                "count": 4508261,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005451819484,
                "variance": 2.972233569e-05
              },
              {
                "average": 0.4991800608,
                "count": 4508261,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999993832,
                "variance": 0.2499993832
              },
              {
                "average": 0.0003447005397,
                "count": 4508261,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01856291458,
                "variance": 0.0003445817977
              },
              {
                "average": 1.178933961,
                "count": 4508261,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.396662391,
                "variance": 0.1573410524
              },
              {
                "average": 1.634781023,
                "count": 4508261,
                "maximum": 20.45999908,
                "minimum": -16.9260006,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38654636,
                "variance": 107.8803452
              },
              {
                "average": 0.5128154736,
                "count": 4508261,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998357921,
                "variance": 0.2498358191
              },
              {
                "average": 323.6210359,
                "count": 4508261,
                "maximum": 359,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.18326018,
                "variance": 537.4635524
              },
              {
                "average": 216315421,
                "count": 4508261,
                "maximum": 216318082.2,
                "minimum": 216313923.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1593.495599,
                "variance": 2539228.224
              },
              {
                "average": 0.5128154736,
                "count": 4508261,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998357921,
                "variance": 0.2498358191
              },
              {
                "average": 0,
                "count": 4508261,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4508261,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4508261,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1906344819,
                "count": 4508261,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3928014899,
                "variance": 0.1542930104
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114022.4561,
              2250608.376,
              8.115747062,
              114514.9761,
              2251084.896,
              1262.215747
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114022.45614527682,
                    2250608.376471119,
                    8.115747062150831
                  ],
                  [
                    114022.45614527682,
                    2251084.8964711186,
                    8.115747062150831
                  ],
                  [
                    114514.97614527681,
                    2251084.8964711186,
                    1262.215747062151
                  ],
                  [
                    114514.97614527681,
                    2250608.376471119,
                    1262.215747062151
                  ],
                  [
                    114022.45614527682,
                    2250608.376471119,
                    8.115747062150831
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:02+00:00",
            "end_time": "2018-07-22T16:58:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1363.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9888026377607,
              70.22858315705952,
              2.066058522780656
            ],
            [
              -150.98824100453666,
              70.2329276398913,
              2.066058522780656
            ],
            [
              -150.97544780741555,
              70.23272343397254,
              8.366058522780657
            ],
            [
              -150.97601181973124,
              70.2283789940841,
              8.366058522780657
            ],
            [
              -150.9888026377607,
              70.22858315705952,
              2.066058522780656
            ]
          ]
        ]
      },
      "bbox": [
        -150.9888026,
        70.22837899,
        2.066058523,
        -150.9754478,
        70.23292764,
        8.366058523
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:17Z",
        "pc:count": 3831679,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116021.9392,
            "count": 3831679,
            "maximum": 116262.1703,
            "minimum": 115769.7303,
            "name": "X",
            "position": 0,
            "stddev": 127.7092794,
            "variance": 16309.66004
          },
          {
            "average": 2252747.016,
            "count": 3831679,
            "maximum": 2252991.107,
            "minimum": 2252514.647,
            "name": "Y",
            "position": 1,
            "stddev": 127.3153354,
            "variance": 16209.19462
          },
          {
            "average": 4.087178925,
            "count": 3831679,
            "maximum": 8.366058523,
            "minimum": 2.066058523,
            "name": "Z",
            "position": 2,
            "stddev": 1.2216418,
            "variance": 1.492408688
          },
          {
            "average": 33838.50111,
            "count": 3831679,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14952.57011,
            "variance": 223579352.8
          },
          {
            "average": 1.002248362,
            "count": 3831679,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0473690726,
            "variance": 0.002243829039
          },
          {
            "average": 1.004498028,
            "count": 3831679,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06692804311,
            "variance": 0.004479362954
          },
          {
            "average": 0.4964137132,
            "count": 3831679,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999872036,
            "variance": 0.2499872038
          },
          {
            "average": 0.0005117860865,
            "count": 3831679,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02261690286,
            "variance": 0.000511524295
          },
          {
            "average": 2.696331817,
            "count": 3831679,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.014088199,
            "variance": 9.084727671
          },
          {
            "average": 2.603867402,
            "count": 3831679,
            "maximum": 20.53800011,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60668216,
            "variance": 112.5017065
          },
          {
            "average": 0.4774972016,
            "count": 3831679,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994934326,
            "variance": 0.2494936892
          },
          {
            "average": 315.6654414,
            "count": 3831679,
            "maximum": 355,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.23759196,
            "variance": 494.5104963
          },
          {
            "average": 216314086.7,
            "count": 3831679,
            "maximum": 216316777.6,
            "minimum": 216312779.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1471.985566,
            "variance": 2166741.506
          },
          {
            "average": 0.4774972016,
            "count": 3831679,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994934326,
            "variance": 0.2494936892
          },
          {
            "average": 0,
            "count": 3831679,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3831679,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3831679,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2000144062,
            "count": 3831679,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4000108565,
            "variance": 0.1600086853
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115769.7303,
          2252514.647,
          2.066058523,
          116262.1703,
          2252991.107,
          8.366058523
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115769.73029384622,
                2252514.6470501185,
                2.066058522780656
              ],
              [
                115769.73029384622,
                2252991.1070501185,
                2.066058522780656
              ],
              [
                116262.17029384623,
                2252991.1070501185,
                8.366058522780657
              ],
              [
                116262.17029384623,
                2252514.6470501185,
                8.366058522780657
              ],
              [
                115769.73029384622,
                2252514.6470501185,
                2.066058522780656
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:17+00:00",
        "end_time": "2018-07-22T16:39:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1363.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1363.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1363.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1363.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9888026,
            70.22837899,
            2.066058523,
            -150.9754478,
            70.23292764,
            8.366058523
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9888026377607,
                  70.22858315705952,
                  2.066058522780656
                ],
                [
                  -150.98824100453666,
                  70.2329276398913,
                  2.066058522780656
                ],
                [
                  -150.97544780741555,
                  70.23272343397254,
                  8.366058522780657
                ],
                [
                  -150.97601181973124,
                  70.2283789940841,
                  8.366058522780657
                ],
                [
                  -150.9888026377607,
                  70.22858315705952,
                  2.066058522780656
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1363.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1363.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:17Z",
            "pc:count": 3831679,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116021.9392,
                "count": 3831679,
                "maximum": 116262.1703,
                "minimum": 115769.7303,
                "name": "X",
                "position": 0,
                "stddev": 127.7092794,
                "variance": 16309.66004
              },
              {
                "average": 2252747.016,
                "count": 3831679,
                "maximum": 2252991.107,
                "minimum": 2252514.647,
                "name": "Y",
                "position": 1,
                "stddev": 127.3153354,
                "variance": 16209.19462
              },
              {
                "average": 4.087178925,
                "count": 3831679,
                "maximum": 8.366058523,
                "minimum": 2.066058523,
                "name": "Z",
                "position": 2,
                "stddev": 1.2216418,
                "variance": 1.492408688
              },
              {
                "average": 33838.50111,
                "count": 3831679,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14952.57011,
                "variance": 223579352.8
              },
              {
                "average": 1.002248362,
                "count": 3831679,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0473690726,
                "variance": 0.002243829039
              },
              {
                "average": 1.004498028,
                "count": 3831679,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06692804311,
                "variance": 0.004479362954
              },
              {
                "average": 0.4964137132,
                "count": 3831679,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999872036,
                "variance": 0.2499872038
              },
              {
                "average": 0.0005117860865,
                "count": 3831679,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02261690286,
                "variance": 0.000511524295
              },
              {
                "average": 2.696331817,
                "count": 3831679,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.014088199,
                "variance": 9.084727671
              },
              {
                "average": 2.603867402,
                "count": 3831679,
                "maximum": 20.53800011,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60668216,
                "variance": 112.5017065
              },
              {
                "average": 0.4774972016,
                "count": 3831679,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994934326,
                "variance": 0.2494936892
              },
              {
                "average": 315.6654414,
                "count": 3831679,
                "maximum": 355,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.23759196,
                "variance": 494.5104963
              },
              {
                "average": 216314086.7,
                "count": 3831679,
                "maximum": 216316777.6,
                "minimum": 216312779.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1471.985566,
                "variance": 2166741.506
              },
              {
                "average": 0.4774972016,
                "count": 3831679,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994934326,
                "variance": 0.2494936892
              },
              {
                "average": 0,
                "count": 3831679,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3831679,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3831679,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2000144062,
                "count": 3831679,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4000108565,
                "variance": 0.1600086853
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115769.7303,
              2252514.647,
              2.066058523,
              116262.1703,
              2252991.107,
              8.366058523
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115769.73029384622,
                    2252514.6470501185,
                    2.066058522780656
                  ],
                  [
                    115769.73029384622,
                    2252991.1070501185,
                    2.066058522780656
                  ],
                  [
                    116262.17029384623,
                    2252991.1070501185,
                    8.366058522780657
                  ],
                  [
                    116262.17029384623,
                    2252514.6470501185,
                    8.366058522780657
                  ],
                  [
                    115769.73029384622,
                    2252514.6470501185,
                    2.066058522780656
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:17+00:00",
            "end_time": "2018-07-22T16:39:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0932.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.99912151947296,
              70.19163618500308,
              4.149852395728715
            ],
            [
              -150.99856278930014,
              70.19597908747643,
              4.149852395728715
            ],
            [
              -150.98579130703848,
              70.19577564628193,
              585.5698523957287
            ],
            [
              -150.98635240815855,
              70.19143278648859,
              585.5698523957287
            ],
            [
              -150.99912151947296,
              70.19163618500308,
              4.149852395728715
            ]
          ]
        ]
      },
      "bbox": [
        -150.9991215,
        70.19143279,
        4.149852396,
        -150.9857913,
        70.19597909,
        585.5698524
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:22Z",
        "pc:count": 3105165,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115775.6783,
            "count": 3105165,
            "maximum": 116048.5216,
            "minimum": 115556.1416,
            "name": "X",
            "position": 0,
            "stddev": 139.0739907,
            "variance": 19341.57489
          },
          {
            "average": 2248697.895,
            "count": 3105165,
            "maximum": 2248928.928,
            "minimum": 2248452.548,
            "name": "Y",
            "position": 1,
            "stddev": 127.3638174,
            "variance": 16221.54198
          },
          {
            "average": 7.382647542,
            "count": 3105165,
            "maximum": 585.5698524,
            "minimum": 4.149852396,
            "name": "Z",
            "position": 2,
            "stddev": 4.097414544,
            "variance": 16.78880595
          },
          {
            "average": 30813.37803,
            "count": 3105165,
            "maximum": 65535,
            "minimum": 773,
            "name": "Intensity",
            "position": 3,
            "stddev": 22650.10381,
            "variance": 513027202.6
          },
          {
            "average": 1.000024153,
            "count": 3105165,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004914542731,
            "variance": 2.415273026e-05
          },
          {
            "average": 1.000048307,
            "count": 3105165,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006950129046,
            "variance": 4.830429375e-05
          },
          {
            "average": 0.5020055295,
            "count": 3105165,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960583,
            "variance": 0.2499960584
          },
          {
            "average": 0.0005806454729,
            "count": 3105165,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02408959341,
            "variance": 0.0005803085107
          },
          {
            "average": 4.523933189,
            "count": 3105165,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.81494104,
            "variance": 14.55377514
          },
          {
            "average": -0.8480073287,
            "count": 3105165,
            "maximum": 20.59199905,
            "minimum": -19.93799973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.723497086,
            "variance": 94.54639559
          },
          {
            "average": 0.4716986054,
            "count": 3105165,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991984689,
            "variance": 0.2491991113
          },
          {
            "average": 322.1232617,
            "count": 3105165,
            "maximum": 364,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 27.08100751,
            "variance": 733.3809679
          },
          {
            "average": 216315855.7,
            "count": 3105165,
            "maximum": 216321522.4,
            "minimum": 216313298.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3522.586333,
            "variance": 12408614.48
          },
          {
            "average": 0.4716986054,
            "count": 3105165,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991984689,
            "variance": 0.2491991113
          },
          {
            "average": 0,
            "count": 3105165,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3105165,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3105165,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1162427761,
            "count": 3105165,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3205158752,
            "variance": 0.1027304262
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115556.1416,
          2248452.548,
          4.149852396,
          116048.5216,
          2248928.928,
          585.5698524
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115556.14163018315,
                2248452.548320332,
                4.149852395728715
              ],
              [
                115556.14163018315,
                2248928.928320332,
                4.149852395728715
              ],
              [
                116048.52163018315,
                2248928.928320332,
                585.5698523957287
              ],
              [
                116048.52163018315,
                2248452.548320332,
                585.5698523957287
              ],
              [
                115556.14163018315,
                2248452.548320332,
                4.149852395728715
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:22+00:00",
        "end_time": "2018-07-22T16:48:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0932.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0932.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0932.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0932.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9991215,
            70.19143279,
            4.149852396,
            -150.9857913,
            70.19597909,
            585.5698524
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.99912151947296,
                  70.19163618500308,
                  4.149852395728715
                ],
                [
                  -150.99856278930014,
                  70.19597908747643,
                  4.149852395728715
                ],
                [
                  -150.98579130703848,
                  70.19577564628193,
                  585.5698523957287
                ],
                [
                  -150.98635240815855,
                  70.19143278648859,
                  585.5698523957287
                ],
                [
                  -150.99912151947296,
                  70.19163618500308,
                  4.149852395728715
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0932.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0932.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:22Z",
            "pc:count": 3105165,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115775.6783,
                "count": 3105165,
                "maximum": 116048.5216,
                "minimum": 115556.1416,
                "name": "X",
                "position": 0,
                "stddev": 139.0739907,
                "variance": 19341.57489
              },
              {
                "average": 2248697.895,
                "count": 3105165,
                "maximum": 2248928.928,
                "minimum": 2248452.548,
                "name": "Y",
                "position": 1,
                "stddev": 127.3638174,
                "variance": 16221.54198
              },
              {
                "average": 7.382647542,
                "count": 3105165,
                "maximum": 585.5698524,
                "minimum": 4.149852396,
                "name": "Z",
                "position": 2,
                "stddev": 4.097414544,
                "variance": 16.78880595
              },
              {
                "average": 30813.37803,
                "count": 3105165,
                "maximum": 65535,
                "minimum": 773,
                "name": "Intensity",
                "position": 3,
                "stddev": 22650.10381,
                "variance": 513027202.6
              },
              {
                "average": 1.000024153,
                "count": 3105165,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004914542731,
                "variance": 2.415273026e-05
              },
              {
                "average": 1.000048307,
                "count": 3105165,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006950129046,
                "variance": 4.830429375e-05
              },
              {
                "average": 0.5020055295,
                "count": 3105165,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960583,
                "variance": 0.2499960584
              },
              {
                "average": 0.0005806454729,
                "count": 3105165,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02408959341,
                "variance": 0.0005803085107
              },
              {
                "average": 4.523933189,
                "count": 3105165,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.81494104,
                "variance": 14.55377514
              },
              {
                "average": -0.8480073287,
                "count": 3105165,
                "maximum": 20.59199905,
                "minimum": -19.93799973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.723497086,
                "variance": 94.54639559
              },
              {
                "average": 0.4716986054,
                "count": 3105165,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991984689,
                "variance": 0.2491991113
              },
              {
                "average": 322.1232617,
                "count": 3105165,
                "maximum": 364,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 27.08100751,
                "variance": 733.3809679
              },
              {
                "average": 216315855.7,
                "count": 3105165,
                "maximum": 216321522.4,
                "minimum": 216313298.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3522.586333,
                "variance": 12408614.48
              },
              {
                "average": 0.4716986054,
                "count": 3105165,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991984689,
                "variance": 0.2491991113
              },
              {
                "average": 0,
                "count": 3105165,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3105165,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3105165,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1162427761,
                "count": 3105165,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3205158752,
                "variance": 0.1027304262
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115556.1416,
              2248452.548,
              4.149852396,
              116048.5216,
              2248928.928,
              585.5698524
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115556.14163018315,
                    2248452.548320332,
                    4.149852395728715
                  ],
                  [
                    115556.14163018315,
                    2248928.928320332,
                    4.149852395728715
                  ],
                  [
                    116048.52163018315,
                    2248928.928320332,
                    585.5698523957287
                  ],
                  [
                    116048.52163018315,
                    2248452.548320332,
                    585.5698523957287
                  ],
                  [
                    115556.14163018315,
                    2248452.548320332,
                    4.149852395728715
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:22+00:00",
            "end_time": "2018-07-22T16:48:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1160.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9759213533304,
              70.21225785391441,
              2.178841859954446
            ],
            [
              -150.97535773766555,
              70.21660172573252,
              2.178841859954446
            ],
            [
              -150.9625746467191,
              70.21639668417887,
              1264.2788418599546
            ],
            [
              -150.96314063776967,
              70.21205285543499,
              1264.2788418599546
            ],
            [
              -150.9759213533304,
              70.21225785391441,
              2.178841859954446
            ]
          ]
        ]
      },
      "bbox": [
        -150.9759214,
        70.21205286,
        2.17884186,
        -150.9625746,
        70.21660173,
        1264.278842
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:39Z",
        "pc:count": 4942980,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116591.4789,
            "count": 4942980,
            "maximum": 116838.4477,
            "minimum": 116346.0477,
            "name": "X",
            "position": 0,
            "stddev": 135.0102592,
            "variance": 18227.77009
          },
          {
            "average": 2251000.025,
            "count": 4942980,
            "maximum": 2251226.785,
            "minimum": 2250750.345,
            "name": "Y",
            "position": 1,
            "stddev": 128.2644471,
            "variance": 16451.7684
          },
          {
            "average": 5.485318932,
            "count": 4942980,
            "maximum": 1264.278842,
            "minimum": 2.17884186,
            "name": "Z",
            "position": 2,
            "stddev": 1.156674124,
            "variance": 1.33789503
          },
          {
            "average": 48603.38144,
            "count": 4942980,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6819.49289,
            "variance": 46505483.28
          },
          {
            "average": 1.000060288,
            "count": 4942980,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007764270505,
            "variance": 6.028389648e-05
          },
          {
            "average": 1.000120575,
            "count": 4942980,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01098000564,
            "variance": 0.0001205605238
          },
          {
            "average": 0.4996815686,
            "count": 4942980,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999492,
            "variance": 0.2499999492
          },
          {
            "average": 0.0003097321858,
            "count": 4942980,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01759648586,
            "variance": 0.0003096363145
          },
          {
            "average": 1.152972094,
            "count": 4942980,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3828503111,
            "variance": 0.1465743607
          },
          {
            "average": 1.859156983,
            "count": 4942980,
            "maximum": 20.44199944,
            "minimum": -16.90800095,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59258004,
            "variance": 112.2027519
          },
          {
            "average": 0.5208722269,
            "count": 4942980,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995642107,
            "variance": 0.2495644006
          },
          {
            "average": 317.9602139,
            "count": 4942980,
            "maximum": 359,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.49577166,
            "variance": 650.0343723
          },
          {
            "average": 216314350.1,
            "count": 4942980,
            "maximum": 216318119.1,
            "minimum": 216312580.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2182.857281,
            "variance": 4764865.911
          },
          {
            "average": 0.5208722269,
            "count": 4942980,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995642107,
            "variance": 0.2495644006
          },
          {
            "average": 0,
            "count": 4942980,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4942980,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4942980,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2089245759,
            "count": 4942980,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4065404419,
            "variance": 0.1652751309
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116346.0477,
          2250750.345,
          2.17884186,
          116838.4477,
          2251226.785,
          1264.278842
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116346.0476785005,
                2250750.3447048347,
                2.178841859954446
              ],
              [
                116346.0476785005,
                2251226.784704835,
                2.178841859954446
              ],
              [
                116838.4476785005,
                2251226.784704835,
                1264.2788418599546
              ],
              [
                116838.4476785005,
                2250750.3447048347,
                1264.2788418599546
              ],
              [
                116346.0476785005,
                2250750.3447048347,
                2.178841859954446
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:39+00:00",
        "end_time": "2018-07-22T16:36:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1160.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1160.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1160.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1160.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9759214,
            70.21205286,
            2.17884186,
            -150.9625746,
            70.21660173,
            1264.278842
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9759213533304,
                  70.21225785391441,
                  2.178841859954446
                ],
                [
                  -150.97535773766555,
                  70.21660172573252,
                  2.178841859954446
                ],
                [
                  -150.9625746467191,
                  70.21639668417887,
                  1264.2788418599546
                ],
                [
                  -150.96314063776967,
                  70.21205285543499,
                  1264.2788418599546
                ],
                [
                  -150.9759213533304,
                  70.21225785391441,
                  2.178841859954446
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1160.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1160.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:39Z",
            "pc:count": 4942980,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116591.4789,
                "count": 4942980,
                "maximum": 116838.4477,
                "minimum": 116346.0477,
                "name": "X",
                "position": 0,
                "stddev": 135.0102592,
                "variance": 18227.77009
              },
              {
                "average": 2251000.025,
                "count": 4942980,
                "maximum": 2251226.785,
                "minimum": 2250750.345,
                "name": "Y",
                "position": 1,
                "stddev": 128.2644471,
                "variance": 16451.7684
              },
              {
                "average": 5.485318932,
                "count": 4942980,
                "maximum": 1264.278842,
                "minimum": 2.17884186,
                "name": "Z",
                "position": 2,
                "stddev": 1.156674124,
                "variance": 1.33789503
              },
              {
                "average": 48603.38144,
                "count": 4942980,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6819.49289,
                "variance": 46505483.28
              },
              {
                "average": 1.000060288,
                "count": 4942980,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007764270505,
                "variance": 6.028389648e-05
              },
              {
                "average": 1.000120575,
                "count": 4942980,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01098000564,
                "variance": 0.0001205605238
              },
              {
                "average": 0.4996815686,
                "count": 4942980,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999492,
                "variance": 0.2499999492
              },
              {
                "average": 0.0003097321858,
                "count": 4942980,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01759648586,
                "variance": 0.0003096363145
              },
              {
                "average": 1.152972094,
                "count": 4942980,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3828503111,
                "variance": 0.1465743607
              },
              {
                "average": 1.859156983,
                "count": 4942980,
                "maximum": 20.44199944,
                "minimum": -16.90800095,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59258004,
                "variance": 112.2027519
              },
              {
                "average": 0.5208722269,
                "count": 4942980,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995642107,
                "variance": 0.2495644006
              },
              {
                "average": 317.9602139,
                "count": 4942980,
                "maximum": 359,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.49577166,
                "variance": 650.0343723
              },
              {
                "average": 216314350.1,
                "count": 4942980,
                "maximum": 216318119.1,
                "minimum": 216312580.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2182.857281,
                "variance": 4764865.911
              },
              {
                "average": 0.5208722269,
                "count": 4942980,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995642107,
                "variance": 0.2495644006
              },
              {
                "average": 0,
                "count": 4942980,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4942980,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4942980,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2089245759,
                "count": 4942980,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4065404419,
                "variance": 0.1652751309
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116346.0477,
              2250750.345,
              2.17884186,
              116838.4477,
              2251226.785,
              1264.278842
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116346.0476785005,
                    2250750.3447048347,
                    2.178841859954446
                  ],
                  [
                    116346.0476785005,
                    2251226.784704835,
                    2.178841859954446
                  ],
                  [
                    116838.4476785005,
                    2251226.784704835,
                    1264.2788418599546
                  ],
                  [
                    116838.4476785005,
                    2250750.3447048347,
                    1264.2788418599546
                  ],
                  [
                    116346.0476785005,
                    2250750.3447048347,
                    2.178841859954446
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:39+00:00",
            "end_time": "2018-07-22T16:36:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1413.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0011079003567,
              70.23261443098943,
              3.932701459747944
            ],
            [
              -151.00054858136596,
              70.23695813499975,
              3.932701459747944
            ],
            [
              -150.9877494262141,
              70.23675469868734,
              11.412701459747945
            ],
            [
              -150.98831112537667,
              70.23241103746037,
              11.412701459747945
            ],
            [
              -151.0011079003567,
              70.23261443098943,
              3.932701459747944
            ]
          ]
        ]
      },
      "bbox": [
        -151.0011079,
        70.23241104,
        3.93270146,
        -150.9877494,
        70.23695813,
        11.41270146
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:09Z",
        "pc:count": 4096840,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115535.2567,
            "count": 4096840,
            "maximum": 115769.6025,
            "minimum": 115277.0225,
            "name": "X",
            "position": 0,
            "stddev": 132.384216,
            "variance": 17525.58064
          },
          {
            "average": 2253176.62,
            "count": 4096840,
            "maximum": 2253410.806,
            "minimum": 2252934.446,
            "name": "Y",
            "position": 1,
            "stddev": 129.8504644,
            "variance": 16861.14311
          },
          {
            "average": 6.088881464,
            "count": 4096840,
            "maximum": 11.41270146,
            "minimum": 3.93270146,
            "name": "Z",
            "position": 2,
            "stddev": 1.057564077,
            "variance": 1.118441776
          },
          {
            "average": 40851.64142,
            "count": 4096840,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11291.63121,
            "variance": 127500935.3
          },
          {
            "average": 1.000721532,
            "count": 4096840,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0268516533,
            "variance": 0.0007210112851
          },
          {
            "average": 1.001444772,
            "count": 4096840,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03798269414,
            "variance": 0.001442685054
          },
          {
            "average": 0.5008718915,
            "count": 4096840,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999993008,
            "variance": 0.2499993008
          },
          {
            "average": 0.0003419708849,
            "count": 4096840,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01848929485,
            "variance": 0.0003418540242
          },
          {
            "average": 1.193013884,
            "count": 4096840,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5948236591,
            "variance": 0.3538151854
          },
          {
            "average": -0.4525030536,
            "count": 4096840,
            "maximum": 19.54199982,
            "minimum": -19.95000076,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21860206,
            "variance": 104.4198282
          },
          {
            "average": 0.486909667,
            "count": 4096840,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998286748,
            "variance": 0.2498287042
          },
          {
            "average": 313.7298886,
            "count": 4096840,
            "maximum": 355,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.54329876,
            "variance": 381.9405266
          },
          {
            "average": 216314071.4,
            "count": 4096840,
            "maximum": 216316769.6,
            "minimum": 216313216.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1156.677066,
            "variance": 1337901.834
          },
          {
            "average": 0.486909667,
            "count": 4096840,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998286748,
            "variance": 0.2498287042
          },
          {
            "average": 0,
            "count": 4096840,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4096840,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4096840,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2118752502,
            "count": 4096840,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4086369652,
            "variance": 0.1669841693
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115277.0225,
          2252934.446,
          3.93270146,
          115769.6025,
          2253410.806,
          11.41270146
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115277.02250046025,
                2252934.445982925,
                3.932701459747944
              ],
              [
                115277.02250046025,
                2253410.8059829255,
                3.932701459747944
              ],
              [
                115769.60250046024,
                2253410.8059829255,
                11.412701459747945
              ],
              [
                115769.60250046024,
                2252934.445982925,
                11.412701459747945
              ],
              [
                115277.02250046025,
                2252934.445982925,
                3.932701459747944
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:09+00:00",
        "end_time": "2018-07-22T16:46:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1413.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1413.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1413.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1413.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0011079,
            70.23241104,
            3.93270146,
            -150.9877494,
            70.23695813,
            11.41270146
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0011079003567,
                  70.23261443098943,
                  3.932701459747944
                ],
                [
                  -151.00054858136596,
                  70.23695813499975,
                  3.932701459747944
                ],
                [
                  -150.9877494262141,
                  70.23675469868734,
                  11.412701459747945
                ],
                [
                  -150.98831112537667,
                  70.23241103746037,
                  11.412701459747945
                ],
                [
                  -151.0011079003567,
                  70.23261443098943,
                  3.932701459747944
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1413.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1413.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:09Z",
            "pc:count": 4096840,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115535.2567,
                "count": 4096840,
                "maximum": 115769.6025,
                "minimum": 115277.0225,
                "name": "X",
                "position": 0,
                "stddev": 132.384216,
                "variance": 17525.58064
              },
              {
                "average": 2253176.62,
                "count": 4096840,
                "maximum": 2253410.806,
                "minimum": 2252934.446,
                "name": "Y",
                "position": 1,
                "stddev": 129.8504644,
                "variance": 16861.14311
              },
              {
                "average": 6.088881464,
                "count": 4096840,
                "maximum": 11.41270146,
                "minimum": 3.93270146,
                "name": "Z",
                "position": 2,
                "stddev": 1.057564077,
                "variance": 1.118441776
              },
              {
                "average": 40851.64142,
                "count": 4096840,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11291.63121,
                "variance": 127500935.3
              },
              {
                "average": 1.000721532,
                "count": 4096840,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0268516533,
                "variance": 0.0007210112851
              },
              {
                "average": 1.001444772,
                "count": 4096840,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03798269414,
                "variance": 0.001442685054
              },
              {
                "average": 0.5008718915,
                "count": 4096840,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999993008,
                "variance": 0.2499993008
              },
              {
                "average": 0.0003419708849,
                "count": 4096840,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01848929485,
                "variance": 0.0003418540242
              },
              {
                "average": 1.193013884,
                "count": 4096840,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5948236591,
                "variance": 0.3538151854
              },
              {
                "average": -0.4525030536,
                "count": 4096840,
                "maximum": 19.54199982,
                "minimum": -19.95000076,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21860206,
                "variance": 104.4198282
              },
              {
                "average": 0.486909667,
                "count": 4096840,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998286748,
                "variance": 0.2498287042
              },
              {
                "average": 313.7298886,
                "count": 4096840,
                "maximum": 355,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.54329876,
                "variance": 381.9405266
              },
              {
                "average": 216314071.4,
                "count": 4096840,
                "maximum": 216316769.6,
                "minimum": 216313216.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1156.677066,
                "variance": 1337901.834
              },
              {
                "average": 0.486909667,
                "count": 4096840,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998286748,
                "variance": 0.2498287042
              },
              {
                "average": 0,
                "count": 4096840,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4096840,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4096840,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2118752502,
                "count": 4096840,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4086369652,
                "variance": 0.1669841693
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115277.0225,
              2252934.446,
              3.93270146,
              115769.6025,
              2253410.806,
              11.41270146
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115277.02250046025,
                    2252934.445982925,
                    3.932701459747944
                  ],
                  [
                    115277.02250046025,
                    2253410.8059829255,
                    3.932701459747944
                  ],
                  [
                    115769.60250046024,
                    2253410.8059829255,
                    11.412701459747945
                  ],
                  [
                    115769.60250046024,
                    2252934.445982925,
                    11.412701459747945
                  ],
                  [
                    115277.02250046025,
                    2252934.445982925,
                    3.932701459747944
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:09+00:00",
            "end_time": "2018-07-22T16:46:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1158.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.00011363481994,
              70.21212499751537,
              -14.724918851837288
            ],
            [
              -150.99955450464472,
              70.21646912034544,
              -14.724918851837288
            ],
            [
              -150.98676867797525,
              70.21626567326288,
              1266.3350811481628
            ],
            [
              -150.9873301842493,
              70.21192159317427,
              1266.3350811481628
            ],
            [
              -151.00011363481994,
              70.21212499751537,
              -14.724918851837288
            ]
          ]
        ]
      },
      "bbox": [
        -151.0001136,
        70.21192159,
        -14.72491885,
        -150.9867687,
        70.21646912,
        1266.335081
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:24Z",
        "pc:count": 4504790,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115676.3238,
            "count": 4504790,
            "maximum": 115909.0857,
            "minimum": 115416.5857,
            "name": "X",
            "position": 0,
            "stddev": 133.3967817,
            "variance": 17794.70137
          },
          {
            "average": 2250929.547,
            "count": 4504790,
            "maximum": 2251170.049,
            "minimum": 2250693.589,
            "name": "Y",
            "position": 1,
            "stddev": 128.6401713,
            "variance": 16548.29367
          },
          {
            "average": 11.75025319,
            "count": 4504790,
            "maximum": 1266.335081,
            "minimum": -14.72491885,
            "name": "Z",
            "position": 2,
            "stddev": 2.078852683,
            "variance": 4.321628478
          },
          {
            "average": 40514.29534,
            "count": 4504790,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13810.87139,
            "variance": 190740168.5
          },
          {
            "average": 1.012198127,
            "count": 4504790,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1128368917,
            "variance": 0.01273216413
          },
          {
            "average": 1.024413347,
            "count": 4504790,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1608478868,
            "variance": 0.0258720427
          },
          {
            "average": 0.4984438786,
            "count": 4504790,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997634,
            "variance": 0.249997634
          },
          {
            "average": 0.0003378625863,
            "count": 4504790,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01837793541,
            "variance": 0.0003377485101
          },
          {
            "average": 1.40523465,
            "count": 4504790,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.023780671,
            "variance": 1.048126863
          },
          {
            "average": 1.684850796,
            "count": 4504790,
            "maximum": 20.56800079,
            "minimum": -16.88999939,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43017779,
            "variance": 108.7886087
          },
          {
            "average": 0.4830211841,
            "count": 4504790,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997116921,
            "variance": 0.2497117752
          },
          {
            "average": 322.0970922,
            "count": 4504790,
            "maximum": 359,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.31634288,
            "variance": 640.9172167
          },
          {
            "average": 216314939.5,
            "count": 4504790,
            "maximum": 216318104.3,
            "minimum": 216313259.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2008.723118,
            "variance": 4034968.566
          },
          {
            "average": 0.4830211841,
            "count": 4504790,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997116921,
            "variance": 0.2497117752
          },
          {
            "average": 0,
            "count": 4504790,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4504790,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4504790,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1944015148,
            "count": 4504790,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3957393089,
            "variance": 0.1566096006
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115416.5857,
          2250693.589,
          -14.72491885,
          115909.0857,
          2251170.049,
          1266.335081
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115416.58570510882,
                2250693.589429906,
                -14.724918851837288
              ],
              [
                115416.58570510882,
                2251170.049429906,
                -14.724918851837288
              ],
              [
                115909.08570510882,
                2251170.049429906,
                1266.3350811481628
              ],
              [
                115909.08570510882,
                2250693.589429906,
                1266.3350811481628
              ],
              [
                115416.58570510882,
                2250693.589429906,
                -14.724918851837288
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:24+00:00",
        "end_time": "2018-07-22T16:47:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1158.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1158.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1158.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1158.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0001136,
            70.21192159,
            -14.72491885,
            -150.9867687,
            70.21646912,
            1266.335081
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.00011363481994,
                  70.21212499751537,
                  -14.724918851837288
                ],
                [
                  -150.99955450464472,
                  70.21646912034544,
                  -14.724918851837288
                ],
                [
                  -150.98676867797525,
                  70.21626567326288,
                  1266.3350811481628
                ],
                [
                  -150.9873301842493,
                  70.21192159317427,
                  1266.3350811481628
                ],
                [
                  -151.00011363481994,
                  70.21212499751537,
                  -14.724918851837288
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1158.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1158.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:24Z",
            "pc:count": 4504790,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115676.3238,
                "count": 4504790,
                "maximum": 115909.0857,
                "minimum": 115416.5857,
                "name": "X",
                "position": 0,
                "stddev": 133.3967817,
                "variance": 17794.70137
              },
              {
                "average": 2250929.547,
                "count": 4504790,
                "maximum": 2251170.049,
                "minimum": 2250693.589,
                "name": "Y",
                "position": 1,
                "stddev": 128.6401713,
                "variance": 16548.29367
              },
              {
                "average": 11.75025319,
                "count": 4504790,
                "maximum": 1266.335081,
                "minimum": -14.72491885,
                "name": "Z",
                "position": 2,
                "stddev": 2.078852683,
                "variance": 4.321628478
              },
              {
                "average": 40514.29534,
                "count": 4504790,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13810.87139,
                "variance": 190740168.5
              },
              {
                "average": 1.012198127,
                "count": 4504790,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1128368917,
                "variance": 0.01273216413
              },
              {
                "average": 1.024413347,
                "count": 4504790,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1608478868,
                "variance": 0.0258720427
              },
              {
                "average": 0.4984438786,
                "count": 4504790,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997634,
                "variance": 0.249997634
              },
              {
                "average": 0.0003378625863,
                "count": 4504790,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01837793541,
                "variance": 0.0003377485101
              },
              {
                "average": 1.40523465,
                "count": 4504790,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.023780671,
                "variance": 1.048126863
              },
              {
                "average": 1.684850796,
                "count": 4504790,
                "maximum": 20.56800079,
                "minimum": -16.88999939,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43017779,
                "variance": 108.7886087
              },
              {
                "average": 0.4830211841,
                "count": 4504790,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997116921,
                "variance": 0.2497117752
              },
              {
                "average": 322.0970922,
                "count": 4504790,
                "maximum": 359,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.31634288,
                "variance": 640.9172167
              },
              {
                "average": 216314939.5,
                "count": 4504790,
                "maximum": 216318104.3,
                "minimum": 216313259.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2008.723118,
                "variance": 4034968.566
              },
              {
                "average": 0.4830211841,
                "count": 4504790,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997116921,
                "variance": 0.2497117752
              },
              {
                "average": 0,
                "count": 4504790,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4504790,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4504790,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1944015148,
                "count": 4504790,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3957393089,
                "variance": 0.1566096006
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115416.5857,
              2250693.589,
              -14.72491885,
              115909.0857,
              2251170.049,
              1266.335081
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115416.58570510882,
                    2250693.589429906,
                    -14.724918851837288
                  ],
                  [
                    115416.58570510882,
                    2251170.049429906,
                    -14.724918851837288
                  ],
                  [
                    115909.08570510882,
                    2251170.049429906,
                    1266.3350811481628
                  ],
                  [
                    115909.08570510882,
                    2250693.589429906,
                    1266.3350811481628
                  ],
                  [
                    115416.58570510882,
                    2250693.589429906,
                    -14.724918851837288
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:24+00:00",
            "end_time": "2018-07-22T16:47:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1359.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03722345692458,
              70.228310009709,
              -3.941324314989117
            ],
            [
              -151.03667078573517,
              70.23265517571444,
              -3.941324314989117
            ],
            [
              -151.02387367924916,
              70.23245418735603,
              656.8386756850109
            ],
            [
              -151.02442873076464,
              70.22810906362331,
              656.8386756850109
            ],
            [
              -151.03722345692458,
              70.228310009709,
              -3.941324314989117
            ]
          ]
        ]
      },
      "bbox": [
        -151.0372235,
        70.22810906,
        -3.941324315,
        -151.0238737,
        70.23265518,
        656.8386757
      ],
      "properties": {
        "datetime": "2018-07-22T17:45:47Z",
        "pc:count": 4170029,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114169.0027,
            "count": 4170029,
            "maximum": 114403.2835,
            "minimum": 113910.7035,
            "name": "X",
            "position": 0,
            "stddev": 127.568611,
            "variance": 16273.75052
          },
          {
            "average": 2252636.853,
            "count": 4170029,
            "maximum": 2252877.541,
            "minimum": 2252401.021,
            "name": "Y",
            "position": 1,
            "stddev": 129.6703442,
            "variance": 16814.39817
          },
          {
            "average": 10.76107042,
            "count": 4170029,
            "maximum": 656.8386757,
            "minimum": -3.941324315,
            "name": "Z",
            "position": 2,
            "stddev": 1.87727655,
            "variance": 3.524167244
          },
          {
            "average": 41257.28389,
            "count": 4170029,
            "maximum": 65535,
            "minimum": 773,
            "name": "Intensity",
            "position": 3,
            "stddev": 12017.13854,
            "variance": 144411618.8
          },
          {
            "average": 1.000057314,
            "count": 4170029,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007570368483,
            "variance": 5.731047897e-05
          },
          {
            "average": 1.000114628,
            "count": 4170029,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01070581096,
            "variance": 0.0001146143882
          },
          {
            "average": 0.4950015935,
            "count": 4170029,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999750753,
            "variance": 0.2499750759
          },
          {
            "average": 0.0003863282486,
            "count": 4170029,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01965143994,
            "variance": 0.0003861790916
          },
          {
            "average": 1.190177574,
            "count": 4170029,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3974016366,
            "variance": 0.1579280608
          },
          {
            "average": 3.936800519,
            "count": 4170029,
            "maximum": 20.53800011,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.6252612,
            "variance": 112.8961756
          },
          {
            "average": 0.5026773195,
            "count": 4170029,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999928919,
            "variance": 0.2499928919
          },
          {
            "average": 320.4744231,
            "count": 4170029,
            "maximum": 355,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.63587619,
            "variance": 425.839386
          },
          {
            "average": 216314967.9,
            "count": 4170029,
            "maximum": 216316747.2,
            "minimum": 216313954,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1029.35443,
            "variance": 1059570.543
          },
          {
            "average": 0.5026773195,
            "count": 4170029,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999928919,
            "variance": 0.2499928919
          },
          {
            "average": 0,
            "count": 4170029,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4170029,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4170029,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2225099634,
            "count": 4170029,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4159318707,
            "variance": 0.1729993211
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          113910.7035,
          2252401.021,
          -3.941324315,
          114403.2835,
          2252877.541,
          656.8386757
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                113910.70353480667,
                2252401.0207153917,
                -3.941324314989117
              ],
              [
                113910.70353480667,
                2252877.5407153913,
                -3.941324314989117
              ],
              [
                114403.28353480666,
                2252877.5407153913,
                656.8386756850109
              ],
              [
                114403.28353480666,
                2252401.0207153917,
                656.8386756850109
              ],
              [
                113910.70353480667,
                2252401.0207153917,
                -3.941324314989117
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:45:47+00:00",
        "end_time": "2018-07-22T16:59:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1359.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1359.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1359.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1359.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0372235,
            70.22810906,
            -3.941324315,
            -151.0238737,
            70.23265518,
            656.8386757
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03722345692458,
                  70.228310009709,
                  -3.941324314989117
                ],
                [
                  -151.03667078573517,
                  70.23265517571444,
                  -3.941324314989117
                ],
                [
                  -151.02387367924916,
                  70.23245418735603,
                  656.8386756850109
                ],
                [
                  -151.02442873076464,
                  70.22810906362331,
                  656.8386756850109
                ],
                [
                  -151.03722345692458,
                  70.228310009709,
                  -3.941324314989117
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1359.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1359.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:45:47Z",
            "pc:count": 4170029,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114169.0027,
                "count": 4170029,
                "maximum": 114403.2835,
                "minimum": 113910.7035,
                "name": "X",
                "position": 0,
                "stddev": 127.568611,
                "variance": 16273.75052
              },
              {
                "average": 2252636.853,
                "count": 4170029,
                "maximum": 2252877.541,
                "minimum": 2252401.021,
                "name": "Y",
                "position": 1,
                "stddev": 129.6703442,
                "variance": 16814.39817
              },
              {
                "average": 10.76107042,
                "count": 4170029,
                "maximum": 656.8386757,
                "minimum": -3.941324315,
                "name": "Z",
                "position": 2,
                "stddev": 1.87727655,
                "variance": 3.524167244
              },
              {
                "average": 41257.28389,
                "count": 4170029,
                "maximum": 65535,
                "minimum": 773,
                "name": "Intensity",
                "position": 3,
                "stddev": 12017.13854,
                "variance": 144411618.8
              },
              {
                "average": 1.000057314,
                "count": 4170029,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007570368483,
                "variance": 5.731047897e-05
              },
              {
                "average": 1.000114628,
                "count": 4170029,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01070581096,
                "variance": 0.0001146143882
              },
              {
                "average": 0.4950015935,
                "count": 4170029,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999750753,
                "variance": 0.2499750759
              },
              {
                "average": 0.0003863282486,
                "count": 4170029,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01965143994,
                "variance": 0.0003861790916
              },
              {
                "average": 1.190177574,
                "count": 4170029,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3974016366,
                "variance": 0.1579280608
              },
              {
                "average": 3.936800519,
                "count": 4170029,
                "maximum": 20.53800011,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.6252612,
                "variance": 112.8961756
              },
              {
                "average": 0.5026773195,
                "count": 4170029,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999928919,
                "variance": 0.2499928919
              },
              {
                "average": 320.4744231,
                "count": 4170029,
                "maximum": 355,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.63587619,
                "variance": 425.839386
              },
              {
                "average": 216314967.9,
                "count": 4170029,
                "maximum": 216316747.2,
                "minimum": 216313954,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1029.35443,
                "variance": 1059570.543
              },
              {
                "average": 0.5026773195,
                "count": 4170029,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999928919,
                "variance": 0.2499928919
              },
              {
                "average": 0,
                "count": 4170029,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4170029,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4170029,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2225099634,
                "count": 4170029,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4159318707,
                "variance": 0.1729993211
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              113910.7035,
              2252401.021,
              -3.941324315,
              114403.2835,
              2252877.541,
              656.8386757
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    113910.70353480667,
                    2252401.0207153917,
                    -3.941324314989117
                  ],
                  [
                    113910.70353480667,
                    2252877.5407153913,
                    -3.941324314989117
                  ],
                  [
                    114403.28353480666,
                    2252877.5407153913,
                    656.8386756850109
                  ],
                  [
                    114403.28353480666,
                    2252401.0207153917,
                    656.8386756850109
                  ],
                  [
                    113910.70353480667,
                    2252401.0207153917,
                    -3.941324314989117
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:45:47+00:00",
            "end_time": "2018-07-22T16:59:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1055.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01180706403474,
              70.20386150708107,
              5.827492795794342
            ],
            [
              -151.0112502623671,
              70.2082058320176,
              5.827492795794342
            ],
            [
              -150.99846990011216,
              70.20800320159044,
              1275.0674927957944
            ],
            [
              -150.99902907627833,
              70.20365891920636,
              1275.0674927957944
            ],
            [
              -151.01180706403474,
              70.20386150708107,
              5.827492795794342
            ]
          ]
        ]
      },
      "bbox": [
        -151.0118071,
        70.20365892,
        5.827492796,
        -150.9984699,
        70.20820583,
        1275.067493
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:07Z",
        "pc:count": 5767845,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115261.4136,
            "count": 5767845,
            "maximum": 115500.1879,
            "minimum": 115007.7279,
            "name": "X",
            "position": 0,
            "stddev": 135.8299651,
            "variance": 18449.77942
          },
          {
            "average": 2250006.44,
            "count": 5767845,
            "maximum": 2250245.283,
            "minimum": 2249768.783,
            "name": "Y",
            "position": 1,
            "stddev": 127.6592143,
            "variance": 16296.87498
          },
          {
            "average": 10.27791822,
            "count": 5767845,
            "maximum": 1275.067493,
            "minimum": 5.827492796,
            "name": "Z",
            "position": 2,
            "stddev": 1.54503687,
            "variance": 2.387138929
          },
          {
            "average": 47859.72162,
            "count": 5767845,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11050.37114,
            "variance": 122110702.3
          },
          {
            "average": 1,
            "count": 5767845,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5767845,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5005765585,
            "count": 5767845,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997109,
            "variance": 0.2499997109
          },
          {
            "average": 0.0004632579412,
            "count": 5767845,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02151844357,
            "variance": 0.0004630434136
          },
          {
            "average": 1.160065501,
            "count": 5767845,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3706889702,
            "variance": 0.1374103126
          },
          {
            "average": 1.049648353,
            "count": 5767845,
            "maximum": 20.45999908,
            "minimum": -20.01600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.83717644,
            "variance": 140.118746
          },
          {
            "average": 0.5237685825,
            "count": 5767845,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994347783,
            "variance": 0.2494350977
          },
          {
            "average": 321.8948007,
            "count": 5767845,
            "maximum": 361,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.4372067,
            "variance": 597.1770715
          },
          {
            "average": 216315450.6,
            "count": 5767845,
            "maximum": 216320247,
            "minimum": 216313459.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2361.109197,
            "variance": 5574836.64
          },
          {
            "average": 0.5237685825,
            "count": 5767845,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994347783,
            "variance": 0.2494350977
          },
          {
            "average": 0,
            "count": 5767845,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5767845,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5767845,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2385643165,
            "count": 5767845,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4262058363,
            "variance": 0.1816514149
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115007.7279,
          2249768.783,
          5.827492796,
          115500.1879,
          2250245.283,
          1275.067493
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115007.72791628876,
                2249768.783437161,
                5.827492795794342
              ],
              [
                115007.72791628876,
                2250245.283437161,
                5.827492795794342
              ],
              [
                115500.18791628875,
                2250245.283437161,
                1275.0674927957944
              ],
              [
                115500.18791628875,
                2249768.783437161,
                1275.0674927957944
              ],
              [
                115007.72791628876,
                2249768.783437161,
                5.827492795794342
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:07+00:00",
        "end_time": "2018-07-22T16:50:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1055.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1055.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1055.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1055.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0118071,
            70.20365892,
            5.827492796,
            -150.9984699,
            70.20820583,
            1275.067493
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01180706403474,
                  70.20386150708107,
                  5.827492795794342
                ],
                [
                  -151.0112502623671,
                  70.2082058320176,
                  5.827492795794342
                ],
                [
                  -150.99846990011216,
                  70.20800320159044,
                  1275.0674927957944
                ],
                [
                  -150.99902907627833,
                  70.20365891920636,
                  1275.0674927957944
                ],
                [
                  -151.01180706403474,
                  70.20386150708107,
                  5.827492795794342
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1055.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1055.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:07Z",
            "pc:count": 5767845,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115261.4136,
                "count": 5767845,
                "maximum": 115500.1879,
                "minimum": 115007.7279,
                "name": "X",
                "position": 0,
                "stddev": 135.8299651,
                "variance": 18449.77942
              },
              {
                "average": 2250006.44,
                "count": 5767845,
                "maximum": 2250245.283,
                "minimum": 2249768.783,
                "name": "Y",
                "position": 1,
                "stddev": 127.6592143,
                "variance": 16296.87498
              },
              {
                "average": 10.27791822,
                "count": 5767845,
                "maximum": 1275.067493,
                "minimum": 5.827492796,
                "name": "Z",
                "position": 2,
                "stddev": 1.54503687,
                "variance": 2.387138929
              },
              {
                "average": 47859.72162,
                "count": 5767845,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11050.37114,
                "variance": 122110702.3
              },
              {
                "average": 1,
                "count": 5767845,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5767845,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5005765585,
                "count": 5767845,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997109,
                "variance": 0.2499997109
              },
              {
                "average": 0.0004632579412,
                "count": 5767845,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02151844357,
                "variance": 0.0004630434136
              },
              {
                "average": 1.160065501,
                "count": 5767845,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3706889702,
                "variance": 0.1374103126
              },
              {
                "average": 1.049648353,
                "count": 5767845,
                "maximum": 20.45999908,
                "minimum": -20.01600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.83717644,
                "variance": 140.118746
              },
              {
                "average": 0.5237685825,
                "count": 5767845,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994347783,
                "variance": 0.2494350977
              },
              {
                "average": 321.8948007,
                "count": 5767845,
                "maximum": 361,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.4372067,
                "variance": 597.1770715
              },
              {
                "average": 216315450.6,
                "count": 5767845,
                "maximum": 216320247,
                "minimum": 216313459.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2361.109197,
                "variance": 5574836.64
              },
              {
                "average": 0.5237685825,
                "count": 5767845,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994347783,
                "variance": 0.2494350977
              },
              {
                "average": 0,
                "count": 5767845,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5767845,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5767845,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2385643165,
                "count": 5767845,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4262058363,
                "variance": 0.1816514149
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115007.7279,
              2249768.783,
              5.827492796,
              115500.1879,
              2250245.283,
              1275.067493
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115007.72791628876,
                    2249768.783437161,
                    5.827492795794342
                  ],
                  [
                    115007.72791628876,
                    2250245.283437161,
                    5.827492795794342
                  ],
                  [
                    115500.18791628875,
                    2250245.283437161,
                    1275.0674927957944
                  ],
                  [
                    115500.18791628875,
                    2249768.783437161,
                    1275.0674927957944
                  ],
                  [
                    115007.72791628876,
                    2249768.783437161,
                    5.827492795794342
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:07+00:00",
            "end_time": "2018-07-22T16:50:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1309.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0249152688165,
              70.22428225153875,
              9.465938515559174
            ],
            [
              -151.02436053885148,
              70.22862619087533,
              9.465938515559174
            ],
            [
              -151.01156730900416,
              70.22842439912642,
              634.3259385155592
            ],
            [
              -151.01212441750448,
              70.22408050221016,
              634.3259385155592
            ],
            [
              -151.0249152688165,
              70.22428225153875,
              9.465938515559174
            ]
          ]
        ]
      },
      "bbox": [
        -151.0249153,
        70.2240805,
        9.465938516,
        -151.0115673,
        70.22862619,
        634.3259385
      ],
      "properties": {
        "datetime": "2018-07-22T17:53:11Z",
        "pc:count": 3925395,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114648.1215,
            "count": 3925395,
            "maximum": 114895.8859,
            "minimum": 114403.3659,
            "name": "X",
            "position": 0,
            "stddev": 136.793892,
            "variance": 18712.56888
          },
          {
            "average": 2252217.684,
            "count": 3925395,
            "maximum": 2252457.737,
            "minimum": 2251981.337,
            "name": "Y",
            "position": 1,
            "stddev": 129.2452875,
            "variance": 16704.34435
          },
          {
            "average": 10.17332421,
            "count": 3925395,
            "maximum": 634.3259385,
            "minimum": 9.465938516,
            "name": "Z",
            "position": 2,
            "stddev": 1.281394451,
            "variance": 1.64197174
          },
          {
            "average": 41369.42216,
            "count": 3925395,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 10726.75158,
            "variance": 115063199.4
          },
          {
            "average": 1.000000255,
            "count": 3925395,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005047290686,
            "variance": 2.547514327e-07
          },
          {
            "average": 1.00000051,
            "count": 3925395,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007137946032,
            "variance": 5.095027355e-07
          },
          {
            "average": 0.5029330806,
            "count": 3925395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999914607,
            "variance": 0.2499914607
          },
          {
            "average": 0.0004139710781,
            "count": 3925395,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02034206999,
            "variance": 0.0004137998114
          },
          {
            "average": 1.149293001,
            "count": 3925395,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3577946558,
            "variance": 0.1280170157
          },
          {
            "average": -1.594319108,
            "count": 3925395,
            "maximum": 16.3560009,
            "minimum": -20.01600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38724266,
            "variance": 107.89481
          },
          {
            "average": 0.472852541,
            "count": 3925395,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992625351,
            "variance": 0.249263079
          },
          {
            "average": 317.1451296,
            "count": 3925395,
            "maximum": 356,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.08001015,
            "variance": 403.2068078
          },
          {
            "average": 216314676.6,
            "count": 3925395,
            "maximum": 216317191.8,
            "minimum": 216313679.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1188.202074,
            "variance": 1411824.169
          },
          {
            "average": 0.472852541,
            "count": 3925395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992625351,
            "variance": 0.249263079
          },
          {
            "average": 0,
            "count": 3925395,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3925395,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3925395,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2033255252,
            "count": 3925395,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4024727286,
            "variance": 0.1619842973
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114403.3659,
          2251981.337,
          9.465938516,
          114895.8859,
          2252457.737,
          634.3259385
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114403.36589369351,
                2251981.3371859,
                9.465938515559174
              ],
              [
                114403.36589369351,
                2252457.7371859006,
                9.465938515559174
              ],
              [
                114895.8858936935,
                2252457.7371859006,
                634.3259385155592
              ],
              [
                114895.8858936935,
                2251981.3371859,
                634.3259385155592
              ],
              [
                114403.36589369351,
                2251981.3371859,
                9.465938515559174
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:53:11+00:00",
        "end_time": "2018-07-22T16:54:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1309.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1309.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1309.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1309.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0249153,
            70.2240805,
            9.465938516,
            -151.0115673,
            70.22862619,
            634.3259385
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0249152688165,
                  70.22428225153875,
                  9.465938515559174
                ],
                [
                  -151.02436053885148,
                  70.22862619087533,
                  9.465938515559174
                ],
                [
                  -151.01156730900416,
                  70.22842439912642,
                  634.3259385155592
                ],
                [
                  -151.01212441750448,
                  70.22408050221016,
                  634.3259385155592
                ],
                [
                  -151.0249152688165,
                  70.22428225153875,
                  9.465938515559174
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1309.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1309.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:53:11Z",
            "pc:count": 3925395,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114648.1215,
                "count": 3925395,
                "maximum": 114895.8859,
                "minimum": 114403.3659,
                "name": "X",
                "position": 0,
                "stddev": 136.793892,
                "variance": 18712.56888
              },
              {
                "average": 2252217.684,
                "count": 3925395,
                "maximum": 2252457.737,
                "minimum": 2251981.337,
                "name": "Y",
                "position": 1,
                "stddev": 129.2452875,
                "variance": 16704.34435
              },
              {
                "average": 10.17332421,
                "count": 3925395,
                "maximum": 634.3259385,
                "minimum": 9.465938516,
                "name": "Z",
                "position": 2,
                "stddev": 1.281394451,
                "variance": 1.64197174
              },
              {
                "average": 41369.42216,
                "count": 3925395,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 10726.75158,
                "variance": 115063199.4
              },
              {
                "average": 1.000000255,
                "count": 3925395,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005047290686,
                "variance": 2.547514327e-07
              },
              {
                "average": 1.00000051,
                "count": 3925395,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007137946032,
                "variance": 5.095027355e-07
              },
              {
                "average": 0.5029330806,
                "count": 3925395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999914607,
                "variance": 0.2499914607
              },
              {
                "average": 0.0004139710781,
                "count": 3925395,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02034206999,
                "variance": 0.0004137998114
              },
              {
                "average": 1.149293001,
                "count": 3925395,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3577946558,
                "variance": 0.1280170157
              },
              {
                "average": -1.594319108,
                "count": 3925395,
                "maximum": 16.3560009,
                "minimum": -20.01600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38724266,
                "variance": 107.89481
              },
              {
                "average": 0.472852541,
                "count": 3925395,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992625351,
                "variance": 0.249263079
              },
              {
                "average": 317.1451296,
                "count": 3925395,
                "maximum": 356,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.08001015,
                "variance": 403.2068078
              },
              {
                "average": 216314676.6,
                "count": 3925395,
                "maximum": 216317191.8,
                "minimum": 216313679.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1188.202074,
                "variance": 1411824.169
              },
              {
                "average": 0.472852541,
                "count": 3925395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992625351,
                "variance": 0.249263079
              },
              {
                "average": 0,
                "count": 3925395,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3925395,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3925395,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2033255252,
                "count": 3925395,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4024727286,
                "variance": 0.1619842973
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114403.3659,
              2251981.337,
              9.465938516,
              114895.8859,
              2252457.737,
              634.3259385
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114403.36589369351,
                    2251981.3371859,
                    9.465938515559174
                  ],
                  [
                    114403.36589369351,
                    2252457.7371859006,
                    9.465938515559174
                  ],
                  [
                    114895.8858936935,
                    2252457.7371859006,
                    634.3259385155592
                  ],
                  [
                    114895.8858936935,
                    2251981.3371859,
                    634.3259385155592
                  ],
                  [
                    114403.36589369351,
                    2251981.3371859,
                    9.465938515559174
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:53:11+00:00",
            "end_time": "2018-07-22T16:54:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1414.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9889999057732,
              70.23268109592856,
              2.036493368971509
            ],
            [
              -150.988438328477,
              70.23702476567153,
              2.036493368971509
            ],
            [
              -150.97563976255157,
              70.23682051853766,
              8.076493368971509
            ],
            [
              -150.9762037198576,
              70.23247689174833,
              8.076493368971509
            ],
            [
              -150.9889999057732,
              70.23268109592856,
              2.036493368971509
            ]
          ]
        ]
      },
      "bbox": [
        -150.9889999,
        70.23247689,
        2.036493369,
        -150.9756398,
        70.23702477,
        8.076493369
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:16Z",
        "pc:count": 3441824,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115978.8333,
            "count": 3441824,
            "maximum": 116234.3629,
            "minimum": 115741.8029,
            "name": "X",
            "position": 0,
            "stddev": 134.5560019,
            "variance": 18105.31765
          },
          {
            "average": 2253216.309,
            "count": 3441824,
            "maximum": 2253439.162,
            "minimum": 2252962.802,
            "name": "Y",
            "position": 1,
            "stddev": 129.8478929,
            "variance": 16860.47529
          },
          {
            "average": 3.357190032,
            "count": 3441824,
            "maximum": 8.076493369,
            "minimum": 2.036493369,
            "name": "Z",
            "position": 2,
            "stddev": 1.48247334,
            "variance": 2.197727204
          },
          {
            "average": 25874.05048,
            "count": 3441824,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 17055.59706,
            "variance": 290893391.2
          },
          {
            "average": 1.000606365,
            "count": 3441824,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02461700693,
            "variance": 0.0006059970304
          },
          {
            "average": 1.001212729,
            "count": 3441824,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03480314217,
            "variance": 0.001211258705
          },
          {
            "average": 0.5038014727,
            "count": 3441824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999856212,
            "variance": 0.2499856214
          },
          {
            "average": 0.0004407546696,
            "count": 3441824,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02098953389,
            "variance": 0.0004405605329
          },
          {
            "average": 4.543572536,
            "count": 3441824,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.8461855,
            "variance": 14.7931429
          },
          {
            "average": -1.568195265,
            "count": 3441824,
            "maximum": 19.5359993,
            "minimum": -19.84199905,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.210218114,
            "variance": 84.82811771
          },
          {
            "average": 0.4963984213,
            "count": 3441824,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999871011,
            "variance": 0.2499871013
          },
          {
            "average": 312.8509392,
            "count": 3441824,
            "maximum": 355,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.14441874,
            "variance": 405.7976063
          },
          {
            "average": 216313868.9,
            "count": 3441824,
            "maximum": 216316776.7,
            "minimum": 216312772,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1272.271525,
            "variance": 1618674.832
          },
          {
            "average": 0.4963984213,
            "count": 3441824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999871011,
            "variance": 0.2499871013
          },
          {
            "average": 0,
            "count": 3441824,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3441824,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3441824,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1551578465,
            "count": 3441824,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.362055144,
            "variance": 0.1310839273
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115741.8029,
          2252962.802,
          2.036493369,
          116234.3629,
          2253439.162,
          8.076493369
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115741.80290101367,
                2252962.801624987,
                2.036493368971509
              ],
              [
                115741.80290101367,
                2253439.161624987,
                2.036493368971509
              ],
              [
                116234.36290101366,
                2253439.161624987,
                8.076493368971509
              ],
              [
                116234.36290101366,
                2252962.801624987,
                8.076493368971509
              ],
              [
                115741.80290101367,
                2252962.801624987,
                2.036493368971509
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:16+00:00",
        "end_time": "2018-07-22T16:39:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1414.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1414.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1414.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1414.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9889999,
            70.23247689,
            2.036493369,
            -150.9756398,
            70.23702477,
            8.076493369
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9889999057732,
                  70.23268109592856,
                  2.036493368971509
                ],
                [
                  -150.988438328477,
                  70.23702476567153,
                  2.036493368971509
                ],
                [
                  -150.97563976255157,
                  70.23682051853766,
                  8.076493368971509
                ],
                [
                  -150.9762037198576,
                  70.23247689174833,
                  8.076493368971509
                ],
                [
                  -150.9889999057732,
                  70.23268109592856,
                  2.036493368971509
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1414.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1414.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:16Z",
            "pc:count": 3441824,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115978.8333,
                "count": 3441824,
                "maximum": 116234.3629,
                "minimum": 115741.8029,
                "name": "X",
                "position": 0,
                "stddev": 134.5560019,
                "variance": 18105.31765
              },
              {
                "average": 2253216.309,
                "count": 3441824,
                "maximum": 2253439.162,
                "minimum": 2252962.802,
                "name": "Y",
                "position": 1,
                "stddev": 129.8478929,
                "variance": 16860.47529
              },
              {
                "average": 3.357190032,
                "count": 3441824,
                "maximum": 8.076493369,
                "minimum": 2.036493369,
                "name": "Z",
                "position": 2,
                "stddev": 1.48247334,
                "variance": 2.197727204
              },
              {
                "average": 25874.05048,
                "count": 3441824,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 17055.59706,
                "variance": 290893391.2
              },
              {
                "average": 1.000606365,
                "count": 3441824,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02461700693,
                "variance": 0.0006059970304
              },
              {
                "average": 1.001212729,
                "count": 3441824,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03480314217,
                "variance": 0.001211258705
              },
              {
                "average": 0.5038014727,
                "count": 3441824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999856212,
                "variance": 0.2499856214
              },
              {
                "average": 0.0004407546696,
                "count": 3441824,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02098953389,
                "variance": 0.0004405605329
              },
              {
                "average": 4.543572536,
                "count": 3441824,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.8461855,
                "variance": 14.7931429
              },
              {
                "average": -1.568195265,
                "count": 3441824,
                "maximum": 19.5359993,
                "minimum": -19.84199905,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.210218114,
                "variance": 84.82811771
              },
              {
                "average": 0.4963984213,
                "count": 3441824,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999871011,
                "variance": 0.2499871013
              },
              {
                "average": 312.8509392,
                "count": 3441824,
                "maximum": 355,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.14441874,
                "variance": 405.7976063
              },
              {
                "average": 216313868.9,
                "count": 3441824,
                "maximum": 216316776.7,
                "minimum": 216312772,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1272.271525,
                "variance": 1618674.832
              },
              {
                "average": 0.4963984213,
                "count": 3441824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999871011,
                "variance": 0.2499871013
              },
              {
                "average": 0,
                "count": 3441824,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3441824,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3441824,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1551578465,
                "count": 3441824,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.362055144,
                "variance": 0.1310839273
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115741.8029,
              2252962.802,
              2.036493369,
              116234.3629,
              2253439.162,
              8.076493369
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115741.80290101367,
                    2252962.801624987,
                    2.036493368971509
                  ],
                  [
                    115741.80290101367,
                    2253439.161624987,
                    2.036493368971509
                  ],
                  [
                    116234.36290101366,
                    2253439.161624987,
                    8.076493368971509
                  ],
                  [
                    116234.36290101366,
                    2252962.801624987,
                    8.076493368971509
                  ],
                  [
                    115741.80290101367,
                    2252962.801624987,
                    2.036493368971509
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:16+00:00",
            "end_time": "2018-07-22T16:39:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1208.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01240969417165,
              70.21615484118217,
              -2.426960531741486
            ],
            [
              -151.0118527346212,
              70.22049927889599,
              -2.426960531741486
            ],
            [
              -150.9990651103154,
              70.22029666704077,
              611.2730394682585
            ],
            [
              -150.99962444686906,
              70.21595227190548,
              611.2730394682585
            ],
            [
              -151.01240969417165,
              70.21615484118217,
              -2.426960531741486
            ]
          ]
        ]
      },
      "bbox": [
        -151.0124097,
        70.21595227,
        -2.426960532,
        -150.9990651,
        70.22049928,
        611.2730395
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:32Z",
        "pc:count": 5260848,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115176.7614,
            "count": 5260848,
            "maximum": 115416.4547,
            "minimum": 114923.9747,
            "name": "X",
            "position": 0,
            "stddev": 136.6530883,
            "variance": 18674.06655
          },
          {
            "average": 2251362.665,
            "count": 5260848,
            "maximum": 2251589.837,
            "minimum": 2251113.357,
            "name": "Y",
            "position": 1,
            "stddev": 129.8895402,
            "variance": 16871.29266
          },
          {
            "average": 11.39168603,
            "count": 5260848,
            "maximum": 611.2730395,
            "minimum": -2.426960532,
            "name": "Z",
            "position": 2,
            "stddev": 4.506711863,
            "variance": 20.31045182
          },
          {
            "average": 46929.30377,
            "count": 5260848,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13498.13506,
            "variance": 182199650.2
          },
          {
            "average": 1.006071074,
            "count": 5260848,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07882192669,
            "variance": 0.006212896127
          },
          {
            "average": 1.012133595,
            "count": 5260848,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1119001714,
            "variance": 0.01252164836
          },
          {
            "average": 0.5000712813,
            "count": 5260848,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000424,
            "variance": 0.2500000424
          },
          {
            "average": 0.0003847288498,
            "count": 5260848,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01961073447,
            "variance": 0.0003845809066
          },
          {
            "average": 1.391310108,
            "count": 5260848,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.215639791,
            "variance": 1.477780101
          },
          {
            "average": 1.52101925,
            "count": 5260848,
            "maximum": 20.50200081,
            "minimum": -20.20800018,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.56054513,
            "variance": 133.6462038
          },
          {
            "average": 0.5208812344,
            "count": 5260848,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995638312,
            "variance": 0.2495640215
          },
          {
            "average": 322.2477369,
            "count": 5260848,
            "maximum": 358,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.18483744,
            "variance": 584.9063622
          },
          {
            "average": 216315013.5,
            "count": 5260848,
            "maximum": 216317872.9,
            "minimum": 216313482.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1751.508641,
            "variance": 3067782.519
          },
          {
            "average": 0.5208812344,
            "count": 5260848,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995638312,
            "variance": 0.2495640215
          },
          {
            "average": 0,
            "count": 5260848,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5260848,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5260848,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2039758609,
            "count": 5260848,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4029512873,
            "variance": 0.1623697399
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114923.9747,
          2251113.357,
          -2.426960532,
          115416.4547,
          2251589.837,
          611.2730395
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114923.9746723745,
                2251113.3565592878,
                -2.426960531741486
              ],
              [
                114923.9746723745,
                2251589.836559288,
                -2.426960531741486
              ],
              [
                115416.45467237452,
                2251589.836559288,
                611.2730394682585
              ],
              [
                115416.45467237452,
                2251113.3565592878,
                611.2730394682585
              ],
              [
                114923.9746723745,
                2251113.3565592878,
                -2.426960531741486
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:32+00:00",
        "end_time": "2018-07-22T16:51:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1208.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1208.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1208.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1208.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0124097,
            70.21595227,
            -2.426960532,
            -150.9990651,
            70.22049928,
            611.2730395
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01240969417165,
                  70.21615484118217,
                  -2.426960531741486
                ],
                [
                  -151.0118527346212,
                  70.22049927889599,
                  -2.426960531741486
                ],
                [
                  -150.9990651103154,
                  70.22029666704077,
                  611.2730394682585
                ],
                [
                  -150.99962444686906,
                  70.21595227190548,
                  611.2730394682585
                ],
                [
                  -151.01240969417165,
                  70.21615484118217,
                  -2.426960531741486
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1208.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1208.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:32Z",
            "pc:count": 5260848,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115176.7614,
                "count": 5260848,
                "maximum": 115416.4547,
                "minimum": 114923.9747,
                "name": "X",
                "position": 0,
                "stddev": 136.6530883,
                "variance": 18674.06655
              },
              {
                "average": 2251362.665,
                "count": 5260848,
                "maximum": 2251589.837,
                "minimum": 2251113.357,
                "name": "Y",
                "position": 1,
                "stddev": 129.8895402,
                "variance": 16871.29266
              },
              {
                "average": 11.39168603,
                "count": 5260848,
                "maximum": 611.2730395,
                "minimum": -2.426960532,
                "name": "Z",
                "position": 2,
                "stddev": 4.506711863,
                "variance": 20.31045182
              },
              {
                "average": 46929.30377,
                "count": 5260848,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13498.13506,
                "variance": 182199650.2
              },
              {
                "average": 1.006071074,
                "count": 5260848,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07882192669,
                "variance": 0.006212896127
              },
              {
                "average": 1.012133595,
                "count": 5260848,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1119001714,
                "variance": 0.01252164836
              },
              {
                "average": 0.5000712813,
                "count": 5260848,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000424,
                "variance": 0.2500000424
              },
              {
                "average": 0.0003847288498,
                "count": 5260848,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01961073447,
                "variance": 0.0003845809066
              },
              {
                "average": 1.391310108,
                "count": 5260848,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.215639791,
                "variance": 1.477780101
              },
              {
                "average": 1.52101925,
                "count": 5260848,
                "maximum": 20.50200081,
                "minimum": -20.20800018,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.56054513,
                "variance": 133.6462038
              },
              {
                "average": 0.5208812344,
                "count": 5260848,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995638312,
                "variance": 0.2495640215
              },
              {
                "average": 322.2477369,
                "count": 5260848,
                "maximum": 358,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.18483744,
                "variance": 584.9063622
              },
              {
                "average": 216315013.5,
                "count": 5260848,
                "maximum": 216317872.9,
                "minimum": 216313482.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1751.508641,
                "variance": 3067782.519
              },
              {
                "average": 0.5208812344,
                "count": 5260848,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995638312,
                "variance": 0.2495640215
              },
              {
                "average": 0,
                "count": 5260848,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5260848,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5260848,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2039758609,
                "count": 5260848,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4029512873,
                "variance": 0.1623697399
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114923.9747,
              2251113.357,
              -2.426960532,
              115416.4547,
              2251589.837,
              611.2730395
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114923.9746723745,
                    2251113.3565592878,
                    -2.426960531741486
                  ],
                  [
                    114923.9746723745,
                    2251589.836559288,
                    -2.426960531741486
                  ],
                  [
                    115416.45467237452,
                    2251589.836559288,
                    611.2730394682585
                  ],
                  [
                    115416.45467237452,
                    2251113.3565592878,
                    611.2730394682585
                  ],
                  [
                    114923.9746723745,
                    2251113.3565592878,
                    -2.426960531741486
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:32+00:00",
            "end_time": "2018-07-22T16:51:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1013.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.99951844908713,
              70.19983109523959,
              4.100711120100641
            ],
            [
              -150.99895945575977,
              70.20417528787755,
              4.100711120100641
            ],
            [
              -150.98618037030923,
              70.20397181452373,
              1285.7607111201007
            ],
            [
              -150.98674173742808,
              70.19962766460448,
              1285.7607111201007
            ],
            [
              -150.99951844908713,
              70.19983109523959,
              4.100711120100641
            ]
          ]
        ]
      },
      "bbox": [
        -150.9995184,
        70.19962766,
        4.10071112,
        -150.9861804,
        70.20417529,
        1285.760711
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:26Z",
        "pc:count": 6049562,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115749.6685,
            "count": 6049562,
            "maximum": 115992.8097,
            "minimum": 115500.3097,
            "name": "X",
            "position": 0,
            "stddev": 132.9065846,
            "variance": 17664.16022
          },
          {
            "average": 2249573.811,
            "count": 6049562,
            "maximum": 2249825.427,
            "minimum": 2249348.927,
            "name": "Y",
            "position": 1,
            "stddev": 125.9102736,
            "variance": 15853.397
          },
          {
            "average": 11.42267441,
            "count": 6049562,
            "maximum": 1285.760711,
            "minimum": 4.10071112,
            "name": "Z",
            "position": 2,
            "stddev": 1.952873106,
            "variance": 3.813713368
          },
          {
            "average": 48397.77913,
            "count": 6049562,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10849.06757,
            "variance": 117702267.2
          },
          {
            "average": 1.000030581,
            "count": 6049562,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005529900199,
            "variance": 3.057979621e-05
          },
          {
            "average": 1.000061161,
            "count": 6049562,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007820340278,
            "variance": 6.115772207e-05
          },
          {
            "average": 0.5014683708,
            "count": 6049562,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999978852,
            "variance": 0.2499978852
          },
          {
            "average": 0.0002932443704,
            "count": 6049562,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01712186983,
            "variance": 0.0002931584266
          },
          {
            "average": 1.197538599,
            "count": 6049562,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7510980051,
            "variance": 0.5641482132
          },
          {
            "average": -0.1262397128,
            "count": 6049562,
            "maximum": 20.49600029,
            "minimum": -20.1060009,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21683753,
            "variance": 104.3837691
          },
          {
            "average": 0.477005608,
            "count": 6049562,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994710194,
            "variance": 0.2494712992
          },
          {
            "average": 322.5407134,
            "count": 6049562,
            "maximum": 363,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.64932427,
            "variance": 657.8878353
          },
          {
            "average": 216315711.5,
            "count": 6049562,
            "maximum": 216321166.1,
            "minimum": 216313283.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2901.748517,
            "variance": 8420144.456
          },
          {
            "average": 0.477005608,
            "count": 6049562,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994710194,
            "variance": 0.2494712992
          },
          {
            "average": 0,
            "count": 6049562,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6049562,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6049562,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1604015299,
            "count": 6049562,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3669780666,
            "variance": 0.1346729014
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115500.3097,
          2249348.927,
          4.10071112,
          115992.8097,
          2249825.427,
          1285.760711
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115500.30968704431,
                2249348.927115798,
                4.100711120100641
              ],
              [
                115500.30968704431,
                2249825.427115798,
                4.100711120100641
              ],
              [
                115992.80968704431,
                2249825.427115798,
                1285.7607111201007
              ],
              [
                115992.80968704431,
                2249348.927115798,
                1285.7607111201007
              ],
              [
                115500.30968704431,
                2249348.927115798,
                4.100711120100641
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:26+00:00",
        "end_time": "2018-07-22T16:48:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1013.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1013.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1013.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1013.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9995184,
            70.19962766,
            4.10071112,
            -150.9861804,
            70.20417529,
            1285.760711
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.99951844908713,
                  70.19983109523959,
                  4.100711120100641
                ],
                [
                  -150.99895945575977,
                  70.20417528787755,
                  4.100711120100641
                ],
                [
                  -150.98618037030923,
                  70.20397181452373,
                  1285.7607111201007
                ],
                [
                  -150.98674173742808,
                  70.19962766460448,
                  1285.7607111201007
                ],
                [
                  -150.99951844908713,
                  70.19983109523959,
                  4.100711120100641
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1013.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1013.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:26Z",
            "pc:count": 6049562,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115749.6685,
                "count": 6049562,
                "maximum": 115992.8097,
                "minimum": 115500.3097,
                "name": "X",
                "position": 0,
                "stddev": 132.9065846,
                "variance": 17664.16022
              },
              {
                "average": 2249573.811,
                "count": 6049562,
                "maximum": 2249825.427,
                "minimum": 2249348.927,
                "name": "Y",
                "position": 1,
                "stddev": 125.9102736,
                "variance": 15853.397
              },
              {
                "average": 11.42267441,
                "count": 6049562,
                "maximum": 1285.760711,
                "minimum": 4.10071112,
                "name": "Z",
                "position": 2,
                "stddev": 1.952873106,
                "variance": 3.813713368
              },
              {
                "average": 48397.77913,
                "count": 6049562,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10849.06757,
                "variance": 117702267.2
              },
              {
                "average": 1.000030581,
                "count": 6049562,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005529900199,
                "variance": 3.057979621e-05
              },
              {
                "average": 1.000061161,
                "count": 6049562,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007820340278,
                "variance": 6.115772207e-05
              },
              {
                "average": 0.5014683708,
                "count": 6049562,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999978852,
                "variance": 0.2499978852
              },
              {
                "average": 0.0002932443704,
                "count": 6049562,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01712186983,
                "variance": 0.0002931584266
              },
              {
                "average": 1.197538599,
                "count": 6049562,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7510980051,
                "variance": 0.5641482132
              },
              {
                "average": -0.1262397128,
                "count": 6049562,
                "maximum": 20.49600029,
                "minimum": -20.1060009,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21683753,
                "variance": 104.3837691
              },
              {
                "average": 0.477005608,
                "count": 6049562,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994710194,
                "variance": 0.2494712992
              },
              {
                "average": 322.5407134,
                "count": 6049562,
                "maximum": 363,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.64932427,
                "variance": 657.8878353
              },
              {
                "average": 216315711.5,
                "count": 6049562,
                "maximum": 216321166.1,
                "minimum": 216313283.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2901.748517,
                "variance": 8420144.456
              },
              {
                "average": 0.477005608,
                "count": 6049562,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994710194,
                "variance": 0.2494712992
              },
              {
                "average": 0,
                "count": 6049562,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6049562,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6049562,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1604015299,
                "count": 6049562,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3669780666,
                "variance": 0.1346729014
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115500.3097,
              2249348.927,
              4.10071112,
              115992.8097,
              2249825.427,
              1285.760711
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115500.30968704431,
                    2249348.927115798,
                    4.100711120100641
                  ],
                  [
                    115500.30968704431,
                    2249825.427115798,
                    4.100711120100641
                  ],
                  [
                    115992.80968704431,
                    2249825.427115798,
                    1285.7607111201007
                  ],
                  [
                    115992.80968704431,
                    2249348.927115798,
                    1285.7607111201007
                  ],
                  [
                    115500.30968704431,
                    2249348.927115798,
                    4.100711120100641
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:26+00:00",
            "end_time": "2018-07-22T16:48:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1364.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9766979309673,
              70.22864937739818,
              5.448537221567436
            ],
            [
              -150.97613408733935,
              70.23299346107575,
              5.448537221567436
            ],
            [
              -150.96333992144176,
              70.23278841981991,
              7.088537221567437
            ],
            [
              -150.96390614408904,
              70.22844437925754,
              7.088537221567437
            ],
            [
              -150.9766979309673,
              70.22864937739818,
              5.448537221567436
            ]
          ]
        ]
      },
      "bbox": [
        -150.9766979,
        70.22844438,
        5.448537222,
        -150.9633399,
        70.23299346,
        7.088537222
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:25Z",
        "pc:count": 4390068,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116479.3804,
            "count": 4390068,
            "maximum": 116726.9418,
            "minimum": 116234.4618,
            "name": "X",
            "position": 0,
            "stddev": 134.7604361,
            "variance": 18160.37515
          },
          {
            "average": 2252783.811,
            "count": 4390068,
            "maximum": 2253019.458,
            "minimum": 2252543.038,
            "name": "Y",
            "position": 1,
            "stddev": 127.6609265,
            "variance": 16297.31216
          },
          {
            "average": 6.11341395,
            "count": 4390068,
            "maximum": 7.088537222,
            "minimum": 5.448537222,
            "name": "Z",
            "position": 2,
            "stddev": 0.1697565658,
            "variance": 0.02881729162
          },
          {
            "average": 43477.6574,
            "count": 4390068,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 11173.15565,
            "variance": 124839407.2
          },
          {
            "average": 1,
            "count": 4390068,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4390068,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4968774971,
            "count": 4390068,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999903068,
            "variance": 0.2499903069
          },
          {
            "average": 0.0004227724946,
            "count": 4390068,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02055708769,
            "variance": 0.0004225938543
          },
          {
            "average": 1.221429144,
            "count": 4390068,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8126754817,
            "variance": 0.6604414385
          },
          {
            "average": 3.453058279,
            "count": 4390068,
            "maximum": 20.66399956,
            "minimum": -15.65999985,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.16257383,
            "variance": 124.6030544
          },
          {
            "average": 0.5211279187,
            "count": 4390068,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995534685,
            "variance": 0.2495536679
          },
          {
            "average": 314.7203763,
            "count": 4390068,
            "maximum": 355,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.8903458,
            "variance": 523.9679308
          },
          {
            "average": 216313857.1,
            "count": 4390068,
            "maximum": 216316785.6,
            "minimum": 216312610,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1615.329624,
            "variance": 2609289.795
          },
          {
            "average": 0.5211279187,
            "count": 4390068,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995534685,
            "variance": 0.2495536679
          },
          {
            "average": 0,
            "count": 4390068,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4390068,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4390068,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.256241589,
            "count": 4390068,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4365568468,
            "variance": 0.1905818805
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116234.4618,
          2252543.038,
          5.448537222,
          116726.9418,
          2253019.458,
          7.088537222
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116234.46176527553,
                2252543.0382160502,
                5.448537221567436
              ],
              [
                116234.46176527553,
                2253019.45821605,
                5.448537221567436
              ],
              [
                116726.94176527554,
                2253019.45821605,
                7.088537221567437
              ],
              [
                116726.94176527554,
                2252543.0382160502,
                7.088537221567437
              ],
              [
                116234.46176527553,
                2252543.0382160502,
                5.448537221567436
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:25+00:00",
        "end_time": "2018-07-22T16:36:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1364.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1364.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1364.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1364.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9766979,
            70.22844438,
            5.448537222,
            -150.9633399,
            70.23299346,
            7.088537222
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9766979309673,
                  70.22864937739818,
                  5.448537221567436
                ],
                [
                  -150.97613408733935,
                  70.23299346107575,
                  5.448537221567436
                ],
                [
                  -150.96333992144176,
                  70.23278841981991,
                  7.088537221567437
                ],
                [
                  -150.96390614408904,
                  70.22844437925754,
                  7.088537221567437
                ],
                [
                  -150.9766979309673,
                  70.22864937739818,
                  5.448537221567436
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1364.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1364.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:25Z",
            "pc:count": 4390068,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116479.3804,
                "count": 4390068,
                "maximum": 116726.9418,
                "minimum": 116234.4618,
                "name": "X",
                "position": 0,
                "stddev": 134.7604361,
                "variance": 18160.37515
              },
              {
                "average": 2252783.811,
                "count": 4390068,
                "maximum": 2253019.458,
                "minimum": 2252543.038,
                "name": "Y",
                "position": 1,
                "stddev": 127.6609265,
                "variance": 16297.31216
              },
              {
                "average": 6.11341395,
                "count": 4390068,
                "maximum": 7.088537222,
                "minimum": 5.448537222,
                "name": "Z",
                "position": 2,
                "stddev": 0.1697565658,
                "variance": 0.02881729162
              },
              {
                "average": 43477.6574,
                "count": 4390068,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 11173.15565,
                "variance": 124839407.2
              },
              {
                "average": 1,
                "count": 4390068,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4390068,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4968774971,
                "count": 4390068,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999903068,
                "variance": 0.2499903069
              },
              {
                "average": 0.0004227724946,
                "count": 4390068,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02055708769,
                "variance": 0.0004225938543
              },
              {
                "average": 1.221429144,
                "count": 4390068,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8126754817,
                "variance": 0.6604414385
              },
              {
                "average": 3.453058279,
                "count": 4390068,
                "maximum": 20.66399956,
                "minimum": -15.65999985,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.16257383,
                "variance": 124.6030544
              },
              {
                "average": 0.5211279187,
                "count": 4390068,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995534685,
                "variance": 0.2495536679
              },
              {
                "average": 314.7203763,
                "count": 4390068,
                "maximum": 355,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.8903458,
                "variance": 523.9679308
              },
              {
                "average": 216313857.1,
                "count": 4390068,
                "maximum": 216316785.6,
                "minimum": 216312610,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1615.329624,
                "variance": 2609289.795
              },
              {
                "average": 0.5211279187,
                "count": 4390068,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995534685,
                "variance": 0.2495536679
              },
              {
                "average": 0,
                "count": 4390068,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4390068,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4390068,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.256241589,
                "count": 4390068,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4365568468,
                "variance": 0.1905818805
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116234.4618,
              2252543.038,
              5.448537222,
              116726.9418,
              2253019.458,
              7.088537222
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116234.46176527553,
                    2252543.0382160502,
                    5.448537221567436
                  ],
                  [
                    116234.46176527553,
                    2253019.45821605,
                    5.448537221567436
                  ],
                  [
                    116726.94176527554,
                    2253019.45821605,
                    7.088537221567437
                  ],
                  [
                    116726.94176527554,
                    2252543.0382160502,
                    7.088537221567437
                  ],
                  [
                    116234.46176527553,
                    2252543.0382160502,
                    5.448537221567436
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:25+00:00",
            "end_time": "2018-07-22T16:36:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0933.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.98703813631673,
              70.19170306066937,
              4.1301844699546
            ],
            [
              -150.9864770856182,
              70.19604647591355,
              4.1301844699546
            ],
            [
              -150.9737046347407,
              70.1958422011352,
              598.6501844699546
            ],
            [
              -150.97426805681272,
              70.19149882875112,
              598.6501844699546
            ],
            [
              -150.98703813631673,
              70.19170306066937,
              4.1301844699546
            ]
          ]
        ]
      },
      "bbox": [
        -150.9870381,
        70.19149883,
        4.13018447,
        -150.9737046,
        70.19604648,
        598.6501845
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:14Z",
        "pc:count": 2548994,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116275.6231,
            "count": 2548994,
            "maximum": 116513.2108,
            "minimum": 116020.7908,
            "name": "X",
            "position": 0,
            "stddev": 134.2806145,
            "variance": 18031.28342
          },
          {
            "average": 2248736.799,
            "count": 2548994,
            "maximum": 2248957.377,
            "minimum": 2248480.937,
            "name": "Y",
            "position": 1,
            "stddev": 135.9959594,
            "variance": 18494.90098
          },
          {
            "average": 4.689263715,
            "count": 2548994,
            "maximum": 598.6501845,
            "minimum": 4.13018447,
            "name": "Z",
            "position": 2,
            "stddev": 1.032394546,
            "variance": 1.065838498
          },
          {
            "average": 19699.83673,
            "count": 2548994,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 17166.56556,
            "variance": 294690973
          },
          {
            "average": 1.000003923,
            "count": 2548994,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001980682328,
            "variance": 3.923102484e-06
          },
          {
            "average": 1.000007846,
            "count": 2548994,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002801102316,
            "variance": 7.846174185e-06
          },
          {
            "average": 0.5040780794,
            "count": 2548994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999834671,
            "variance": 0.2499834673
          },
          {
            "average": 0.0008120850814,
            "count": 2548994,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02848553874,
            "variance": 0.0008114259176
          },
          {
            "average": 6.302513854,
            "count": 2548994,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.555169197,
            "variance": 12.63922802
          },
          {
            "average": -1.714252835,
            "count": 2548994,
            "maximum": 20.45400047,
            "minimum": -20.00399971,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.861913772,
            "variance": 78.53351571
          },
          {
            "average": 0.4866770969,
            "count": 2548994,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998225668,
            "variance": 0.2498225983
          },
          {
            "average": 319.4896453,
            "count": 2548994,
            "maximum": 364,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.93732308,
            "variance": 725.6193749
          },
          {
            "average": 216315439.6,
            "count": 2548994,
            "maximum": 216321514.4,
            "minimum": 216312851,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3572.964541,
            "variance": 12766075.61
          },
          {
            "average": 0.4866770969,
            "count": 2548994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998225668,
            "variance": 0.2498225983
          },
          {
            "average": 0,
            "count": 2548994,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2548994,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2548994,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07793192138,
            "count": 2548994,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2680644796,
            "variance": 0.0718585652
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116020.7908,
          2248480.937,
          4.13018447,
          116513.2108,
          2248957.377,
          598.6501845
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116020.7907535894,
                2248480.9366294025,
                4.1301844699546
              ],
              [
                116020.7907535894,
                2248957.376629403,
                4.1301844699546
              ],
              [
                116513.21075358942,
                2248957.376629403,
                598.6501844699546
              ],
              [
                116513.21075358942,
                2248480.9366294025,
                598.6501844699546
              ],
              [
                116020.7907535894,
                2248480.9366294025,
                4.1301844699546
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:14+00:00",
        "end_time": "2018-07-22T16:40:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0933.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0933.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0933.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0933.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9870381,
            70.19149883,
            4.13018447,
            -150.9737046,
            70.19604648,
            598.6501845
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.98703813631673,
                  70.19170306066937,
                  4.1301844699546
                ],
                [
                  -150.9864770856182,
                  70.19604647591355,
                  4.1301844699546
                ],
                [
                  -150.9737046347407,
                  70.1958422011352,
                  598.6501844699546
                ],
                [
                  -150.97426805681272,
                  70.19149882875112,
                  598.6501844699546
                ],
                [
                  -150.98703813631673,
                  70.19170306066937,
                  4.1301844699546
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0933.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0933.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:14Z",
            "pc:count": 2548994,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116275.6231,
                "count": 2548994,
                "maximum": 116513.2108,
                "minimum": 116020.7908,
                "name": "X",
                "position": 0,
                "stddev": 134.2806145,
                "variance": 18031.28342
              },
              {
                "average": 2248736.799,
                "count": 2548994,
                "maximum": 2248957.377,
                "minimum": 2248480.937,
                "name": "Y",
                "position": 1,
                "stddev": 135.9959594,
                "variance": 18494.90098
              },
              {
                "average": 4.689263715,
                "count": 2548994,
                "maximum": 598.6501845,
                "minimum": 4.13018447,
                "name": "Z",
                "position": 2,
                "stddev": 1.032394546,
                "variance": 1.065838498
              },
              {
                "average": 19699.83673,
                "count": 2548994,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 17166.56556,
                "variance": 294690973
              },
              {
                "average": 1.000003923,
                "count": 2548994,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001980682328,
                "variance": 3.923102484e-06
              },
              {
                "average": 1.000007846,
                "count": 2548994,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002801102316,
                "variance": 7.846174185e-06
              },
              {
                "average": 0.5040780794,
                "count": 2548994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999834671,
                "variance": 0.2499834673
              },
              {
                "average": 0.0008120850814,
                "count": 2548994,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02848553874,
                "variance": 0.0008114259176
              },
              {
                "average": 6.302513854,
                "count": 2548994,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.555169197,
                "variance": 12.63922802
              },
              {
                "average": -1.714252835,
                "count": 2548994,
                "maximum": 20.45400047,
                "minimum": -20.00399971,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.861913772,
                "variance": 78.53351571
              },
              {
                "average": 0.4866770969,
                "count": 2548994,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998225668,
                "variance": 0.2498225983
              },
              {
                "average": 319.4896453,
                "count": 2548994,
                "maximum": 364,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.93732308,
                "variance": 725.6193749
              },
              {
                "average": 216315439.6,
                "count": 2548994,
                "maximum": 216321514.4,
                "minimum": 216312851,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3572.964541,
                "variance": 12766075.61
              },
              {
                "average": 0.4866770969,
                "count": 2548994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998225668,
                "variance": 0.2498225983
              },
              {
                "average": 0,
                "count": 2548994,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2548994,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2548994,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07793192138,
                "count": 2548994,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2680644796,
                "variance": 0.0718585652
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116020.7908,
              2248480.937,
              4.13018447,
              116513.2108,
              2248957.377,
              598.6501845
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116020.7907535894,
                    2248480.9366294025,
                    4.1301844699546
                  ],
                  [
                    116020.7907535894,
                    2248957.376629403,
                    4.1301844699546
                  ],
                  [
                    116513.21075358942,
                    2248957.376629403,
                    598.6501844699546
                  ],
                  [
                    116513.21075358942,
                    2248480.9366294025,
                    598.6501844699546
                  ],
                  [
                    116020.7907535894,
                    2248480.9366294025,
                    4.1301844699546
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:14+00:00",
            "end_time": "2018-07-22T16:40:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1261.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.98841043700102,
              70.22038762258501,
              2.134211663731653
            ],
            [
              -150.98784897526082,
              70.22473154341782,
              2.134211663731653
            ],
            [
              -150.97506183665675,
              70.22452734530435,
              23.734211663731656
            ],
            [
              -150.97562567532478,
              70.2201834673883,
              23.734211663731656
            ],
            [
              -150.98841043700102,
              70.22038762258501,
              2.134211663731653
            ]
          ]
        ]
      },
      "bbox": [
        -150.9884104,
        70.22018347,
        2.134211664,
        -150.9750618,
        70.22473154,
        23.73421166
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:15Z",
        "pc:count": 3595773,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116068.5698,
            "count": 3595773,
            "maximum": 116317.883,
            "minimum": 115825.503,
            "name": "X",
            "position": 0,
            "stddev": 130.5598276,
            "variance": 17045.86858
          },
          {
            "average": 2251880.741,
            "count": 3595773,
            "maximum": 2252094.761,
            "minimum": 2251618.341,
            "name": "Y",
            "position": 1,
            "stddev": 129.3768733,
            "variance": 16738.37533
          },
          {
            "average": 4.939891463,
            "count": 3595773,
            "maximum": 23.73421166,
            "minimum": 2.134211664,
            "name": "Z",
            "position": 2,
            "stddev": 1.460026483,
            "variance": 2.131677331
          },
          {
            "average": 36418.93922,
            "count": 3595773,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13802.24373,
            "variance": 190501932
          },
          {
            "average": 1.001844944,
            "count": 3595773,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0429131768,
            "variance": 0.001841540743
          },
          {
            "average": 1.003694338,
            "count": 3595773,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06066869588,
            "variance": 0.00368069066
          },
          {
            "average": 0.5032169717,
            "count": 3595773,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999897205,
            "variance": 0.2499897206
          },
          {
            "average": 0.0004555348739,
            "count": 3595773,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02133840408,
            "variance": 0.0004553274885
          },
          {
            "average": 2.154141543,
            "count": 3595773,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.452534682,
            "variance": 6.014926368
          },
          {
            "average": -1.397099713,
            "count": 3595773,
            "maximum": 19.39800072,
            "minimum": -19.90800095,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.03145574,
            "variance": 100.6301043
          },
          {
            "average": 0.4819748076,
            "count": 3595773,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996750563,
            "variance": 0.2496751619
          },
          {
            "average": 313.5855142,
            "count": 3595773,
            "maximum": 358,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.24377432,
            "variance": 451.2979473
          },
          {
            "average": 216314013,
            "count": 3595773,
            "maximum": 216317855.2,
            "minimum": 216312794.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1550.534396,
            "variance": 2404156.914
          },
          {
            "average": 0.4819748076,
            "count": 3595773,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996750563,
            "variance": 0.2496751619
          },
          {
            "average": 0,
            "count": 3595773,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3595773,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3595773,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1968205446,
            "count": 3595773,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3975956008,
            "variance": 0.1580822618
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115825.503,
          2251618.341,
          2.134211664,
          116317.883,
          2252094.761,
          23.73421166
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115825.50299068214,
                2251618.341453937,
                2.134211663731653
              ],
              [
                115825.50299068214,
                2252094.761453937,
                2.134211663731653
              ],
              [
                116317.88299068215,
                2252094.761453937,
                23.734211663731656
              ],
              [
                116317.88299068215,
                2251618.341453937,
                23.734211663731656
              ],
              [
                115825.50299068214,
                2251618.341453937,
                2.134211663731653
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:15+00:00",
        "end_time": "2018-07-22T16:39:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1261.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1261.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1261.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1261.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9884104,
            70.22018347,
            2.134211664,
            -150.9750618,
            70.22473154,
            23.73421166
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.98841043700102,
                  70.22038762258501,
                  2.134211663731653
                ],
                [
                  -150.98784897526082,
                  70.22473154341782,
                  2.134211663731653
                ],
                [
                  -150.97506183665675,
                  70.22452734530435,
                  23.734211663731656
                ],
                [
                  -150.97562567532478,
                  70.2201834673883,
                  23.734211663731656
                ],
                [
                  -150.98841043700102,
                  70.22038762258501,
                  2.134211663731653
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1261.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1261.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:15Z",
            "pc:count": 3595773,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116068.5698,
                "count": 3595773,
                "maximum": 116317.883,
                "minimum": 115825.503,
                "name": "X",
                "position": 0,
                "stddev": 130.5598276,
                "variance": 17045.86858
              },
              {
                "average": 2251880.741,
                "count": 3595773,
                "maximum": 2252094.761,
                "minimum": 2251618.341,
                "name": "Y",
                "position": 1,
                "stddev": 129.3768733,
                "variance": 16738.37533
              },
              {
                "average": 4.939891463,
                "count": 3595773,
                "maximum": 23.73421166,
                "minimum": 2.134211664,
                "name": "Z",
                "position": 2,
                "stddev": 1.460026483,
                "variance": 2.131677331
              },
              {
                "average": 36418.93922,
                "count": 3595773,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13802.24373,
                "variance": 190501932
              },
              {
                "average": 1.001844944,
                "count": 3595773,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0429131768,
                "variance": 0.001841540743
              },
              {
                "average": 1.003694338,
                "count": 3595773,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06066869588,
                "variance": 0.00368069066
              },
              {
                "average": 0.5032169717,
                "count": 3595773,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999897205,
                "variance": 0.2499897206
              },
              {
                "average": 0.0004555348739,
                "count": 3595773,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02133840408,
                "variance": 0.0004553274885
              },
              {
                "average": 2.154141543,
                "count": 3595773,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.452534682,
                "variance": 6.014926368
              },
              {
                "average": -1.397099713,
                "count": 3595773,
                "maximum": 19.39800072,
                "minimum": -19.90800095,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.03145574,
                "variance": 100.6301043
              },
              {
                "average": 0.4819748076,
                "count": 3595773,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996750563,
                "variance": 0.2496751619
              },
              {
                "average": 313.5855142,
                "count": 3595773,
                "maximum": 358,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.24377432,
                "variance": 451.2979473
              },
              {
                "average": 216314013,
                "count": 3595773,
                "maximum": 216317855.2,
                "minimum": 216312794.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1550.534396,
                "variance": 2404156.914
              },
              {
                "average": 0.4819748076,
                "count": 3595773,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996750563,
                "variance": 0.2496751619
              },
              {
                "average": 0,
                "count": 3595773,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3595773,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3595773,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1968205446,
                "count": 3595773,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3975956008,
                "variance": 0.1580822618
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115825.503,
              2251618.341,
              2.134211664,
              116317.883,
              2252094.761,
              23.73421166
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115825.50299068214,
                    2251618.341453937,
                    2.134211663731653
                  ],
                  [
                    115825.50299068214,
                    2252094.761453937,
                    2.134211663731653
                  ],
                  [
                    116317.88299068215,
                    2252094.761453937,
                    23.734211663731656
                  ],
                  [
                    116317.88299068215,
                    2251618.341453937,
                    23.734211663731656
                  ],
                  [
                    115825.50299068214,
                    2251618.341453937,
                    2.134211663731653
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:15+00:00",
            "end_time": "2018-07-22T16:39:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0969.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01140567971663,
              70.19566528068982,
              10.762110782211339
            ],
            [
              -151.0108489054031,
              70.20001013860093,
              10.762110782211339
            ],
            [
              -150.99807251579165,
              70.19980748205178,
              13.52211078221134
            ],
            [
              -150.99863166342854,
              70.19546266668466,
              13.52211078221134
            ],
            [
              -151.01140567971663,
              70.19566528068982,
              10.762110782211339
            ]
          ]
        ]
      },
      "bbox": [
        -151.0114057,
        70.19546267,
        10.76211078,
        -150.9980725,
        70.20001014,
        13.52211078
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:30Z",
        "pc:count": 5628729,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115311.6854,
            "count": 5628729,
            "maximum": 115556.0483,
            "minimum": 115063.5683,
            "name": "X",
            "position": 0,
            "stddev": 136.0839398,
            "variance": 18518.83866
          },
          {
            "average": 2249132.403,
            "count": 5628729,
            "maximum": 2249348.858,
            "minimum": 2248872.278,
            "name": "Y",
            "position": 1,
            "stddev": 131.3022367,
            "variance": 17240.27736
          },
          {
            "average": 11.90295043,
            "count": 5628729,
            "maximum": 13.52211078,
            "minimum": 10.76211078,
            "name": "Z",
            "position": 2,
            "stddev": 0.4943330177,
            "variance": 0.2443651324
          },
          {
            "average": 49232.13606,
            "count": 5628729,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 10238.02814,
            "variance": 104817220.3
          },
          {
            "average": 1,
            "count": 5628729,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5628729,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5041992606,
            "count": 5628729,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999824103,
            "variance": 0.2499824106
          },
          {
            "average": 0.0004709766628,
            "count": 5628729,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0216968875,
            "variance": 0.0004707549274
          },
          {
            "average": 1.142559359,
            "count": 5628729,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3501789337,
            "variance": 0.1226252856
          },
          {
            "average": -1.24927456,
            "count": 5628729,
            "maximum": 20.49600029,
            "minimum": -20.01600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.23594101,
            "variance": 126.2463703
          },
          {
            "average": 0.5063066635,
            "count": 5628729,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999602688,
            "variance": 0.2499602704
          },
          {
            "average": 322.0278319,
            "count": 5628729,
            "maximum": 364,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.26850496,
            "variance": 638.4973429
          },
          {
            "average": 216315829.5,
            "count": 5628729,
            "maximum": 216321530.3,
            "minimum": 216313443.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3025.696541,
            "variance": 9154839.56
          },
          {
            "average": 0.5063066635,
            "count": 5628729,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999602688,
            "variance": 0.2499602704
          },
          {
            "average": 0,
            "count": 5628729,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5628729,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5628729,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2470724741,
            "count": 5628729,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4313092854,
            "variance": 0.1860276997
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115063.5683,
          2248872.278,
          10.76211078,
          115556.0483,
          2249348.858,
          13.52211078
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115063.56834733255,
                2248872.277653083,
                10.762110782211339
              ],
              [
                115063.56834733255,
                2249348.8576530833,
                10.762110782211339
              ],
              [
                115556.04834733256,
                2249348.8576530833,
                13.52211078221134
              ],
              [
                115556.04834733256,
                2248872.277653083,
                13.52211078221134
              ],
              [
                115063.56834733255,
                2248872.277653083,
                10.762110782211339
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:30+00:00",
        "end_time": "2018-07-22T16:50:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0969.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0969.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0969.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0969.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0114057,
            70.19546267,
            10.76211078,
            -150.9980725,
            70.20001014,
            13.52211078
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01140567971663,
                  70.19566528068982,
                  10.762110782211339
                ],
                [
                  -151.0108489054031,
                  70.20001013860093,
                  10.762110782211339
                ],
                [
                  -150.99807251579165,
                  70.19980748205178,
                  13.52211078221134
                ],
                [
                  -150.99863166342854,
                  70.19546266668466,
                  13.52211078221134
                ],
                [
                  -151.01140567971663,
                  70.19566528068982,
                  10.762110782211339
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0969.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0969.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:30Z",
            "pc:count": 5628729,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115311.6854,
                "count": 5628729,
                "maximum": 115556.0483,
                "minimum": 115063.5683,
                "name": "X",
                "position": 0,
                "stddev": 136.0839398,
                "variance": 18518.83866
              },
              {
                "average": 2249132.403,
                "count": 5628729,
                "maximum": 2249348.858,
                "minimum": 2248872.278,
                "name": "Y",
                "position": 1,
                "stddev": 131.3022367,
                "variance": 17240.27736
              },
              {
                "average": 11.90295043,
                "count": 5628729,
                "maximum": 13.52211078,
                "minimum": 10.76211078,
                "name": "Z",
                "position": 2,
                "stddev": 0.4943330177,
                "variance": 0.2443651324
              },
              {
                "average": 49232.13606,
                "count": 5628729,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 10238.02814,
                "variance": 104817220.3
              },
              {
                "average": 1,
                "count": 5628729,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5628729,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5041992606,
                "count": 5628729,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999824103,
                "variance": 0.2499824106
              },
              {
                "average": 0.0004709766628,
                "count": 5628729,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0216968875,
                "variance": 0.0004707549274
              },
              {
                "average": 1.142559359,
                "count": 5628729,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3501789337,
                "variance": 0.1226252856
              },
              {
                "average": -1.24927456,
                "count": 5628729,
                "maximum": 20.49600029,
                "minimum": -20.01600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.23594101,
                "variance": 126.2463703
              },
              {
                "average": 0.5063066635,
                "count": 5628729,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999602688,
                "variance": 0.2499602704
              },
              {
                "average": 322.0278319,
                "count": 5628729,
                "maximum": 364,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.26850496,
                "variance": 638.4973429
              },
              {
                "average": 216315829.5,
                "count": 5628729,
                "maximum": 216321530.3,
                "minimum": 216313443.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3025.696541,
                "variance": 9154839.56
              },
              {
                "average": 0.5063066635,
                "count": 5628729,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999602688,
                "variance": 0.2499602704
              },
              {
                "average": 0,
                "count": 5628729,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5628729,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5628729,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2470724741,
                "count": 5628729,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4313092854,
                "variance": 0.1860276997
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115063.5683,
              2248872.278,
              10.76211078,
              115556.0483,
              2249348.858,
              13.52211078
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115063.56834733255,
                    2248872.277653083,
                    10.762110782211339
                  ],
                  [
                    115063.56834733255,
                    2249348.8576530833,
                    10.762110782211339
                  ],
                  [
                    115556.04834733256,
                    2249348.8576530833,
                    13.52211078221134
                  ],
                  [
                    115556.04834733256,
                    2248872.277653083,
                    13.52211078221134
                  ],
                  [
                    115063.56834733255,
                    2248872.277653083,
                    10.762110782211339
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:30+00:00",
            "end_time": "2018-07-22T16:50:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1106.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01200726608607,
              70.20795924514482,
              -6.352901328723874
            ],
            [
              -151.0114504974005,
              70.21230293897948,
              -6.352901328723874
            ],
            [
              -150.99866736956963,
              70.21210030920915,
              1260.967098671276
            ],
            [
              -150.99922651328686,
              70.20775665793025,
              1260.967098671276
            ],
            [
              -151.01200726608607,
              70.20795924514482,
              -6.352901328723874
            ]
          ]
        ]
      },
      "bbox": [
        -151.0120073,
        70.20775666,
        -6.352901329,
        -150.9986674,
        70.21230294,
        1260.967099
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:06Z",
        "pc:count": 4465694,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115226.7519,
            "count": 4465694,
            "maximum": 115472.3131,
            "minimum": 114979.8331,
            "name": "X",
            "position": 0,
            "stddev": 136.8823702,
            "variance": 18736.78328
          },
          {
            "average": 2250463.914,
            "count": 4465694,
            "maximum": 2250693.401,
            "minimum": 2250216.981,
            "name": "Y",
            "position": 1,
            "stddev": 134.8147662,
            "variance": 18175.02119
          },
          {
            "average": 11.21495255,
            "count": 4465694,
            "maximum": 1260.967099,
            "minimum": -6.352901329,
            "name": "Z",
            "position": 2,
            "stddev": 3.071388067,
            "variance": 9.433424658
          },
          {
            "average": 48356.8617,
            "count": 4465694,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10641.36476,
            "variance": 113238644
          },
          {
            "average": 1.000141971,
            "count": 4465694,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01191432291,
            "variance": 0.0001419510903
          },
          {
            "average": 1.000285958,
            "count": 4465694,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01690787051,
            "variance": 0.0002858760851
          },
          {
            "average": 0.5011561473,
            "count": 4465694,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987193,
            "variance": 0.2499987193
          },
          {
            "average": 0.0004317358063,
            "count": 4465694,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02077376969,
            "variance": 0.0004315495072
          },
          {
            "average": 1.157163702,
            "count": 4465694,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3748251043,
            "variance": 0.1404938588
          },
          {
            "average": 1.087704447,
            "count": 4465694,
            "maximum": 20.55599976,
            "minimum": -19.87199974,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.55171845,
            "variance": 133.4421991
          },
          {
            "average": 0.5303872142,
            "count": 4465694,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990758189,
            "variance": 0.249076673
          },
          {
            "average": 318.2447299,
            "count": 4465694,
            "maximum": 361,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.68925646,
            "variance": 514.8023589
          },
          {
            "average": 216314833.9,
            "count": 4465694,
            "maximum": 216320246.1,
            "minimum": 216313467.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1847.719521,
            "variance": 3414067.429
          },
          {
            "average": 0.5303872142,
            "count": 4465694,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990758189,
            "variance": 0.249076673
          },
          {
            "average": 0,
            "count": 4465694,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4465694,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4465694,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2587570935,
            "count": 4465694,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4379519415,
            "variance": 0.191801903
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114979.8331,
          2250216.981,
          -6.352901329,
          115472.3131,
          2250693.401,
          1260.967099
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114979.83314248438,
                2250216.981215475,
                -6.352901328723874
              ],
              [
                114979.83314248438,
                2250693.401215475,
                -6.352901328723874
              ],
              [
                115472.31314248439,
                2250693.401215475,
                1260.967098671276
              ],
              [
                115472.31314248439,
                2250216.981215475,
                1260.967098671276
              ],
              [
                114979.83314248438,
                2250216.981215475,
                -6.352901328723874
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:06+00:00",
        "end_time": "2018-07-22T16:51:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1106.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1106.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1106.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1106.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0120073,
            70.20775666,
            -6.352901329,
            -150.9986674,
            70.21230294,
            1260.967099
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01200726608607,
                  70.20795924514482,
                  -6.352901328723874
                ],
                [
                  -151.0114504974005,
                  70.21230293897948,
                  -6.352901328723874
                ],
                [
                  -150.99866736956963,
                  70.21210030920915,
                  1260.967098671276
                ],
                [
                  -150.99922651328686,
                  70.20775665793025,
                  1260.967098671276
                ],
                [
                  -151.01200726608607,
                  70.20795924514482,
                  -6.352901328723874
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1106.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1106.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:06Z",
            "pc:count": 4465694,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115226.7519,
                "count": 4465694,
                "maximum": 115472.3131,
                "minimum": 114979.8331,
                "name": "X",
                "position": 0,
                "stddev": 136.8823702,
                "variance": 18736.78328
              },
              {
                "average": 2250463.914,
                "count": 4465694,
                "maximum": 2250693.401,
                "minimum": 2250216.981,
                "name": "Y",
                "position": 1,
                "stddev": 134.8147662,
                "variance": 18175.02119
              },
              {
                "average": 11.21495255,
                "count": 4465694,
                "maximum": 1260.967099,
                "minimum": -6.352901329,
                "name": "Z",
                "position": 2,
                "stddev": 3.071388067,
                "variance": 9.433424658
              },
              {
                "average": 48356.8617,
                "count": 4465694,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10641.36476,
                "variance": 113238644
              },
              {
                "average": 1.000141971,
                "count": 4465694,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01191432291,
                "variance": 0.0001419510903
              },
              {
                "average": 1.000285958,
                "count": 4465694,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01690787051,
                "variance": 0.0002858760851
              },
              {
                "average": 0.5011561473,
                "count": 4465694,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987193,
                "variance": 0.2499987193
              },
              {
                "average": 0.0004317358063,
                "count": 4465694,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02077376969,
                "variance": 0.0004315495072
              },
              {
                "average": 1.157163702,
                "count": 4465694,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3748251043,
                "variance": 0.1404938588
              },
              {
                "average": 1.087704447,
                "count": 4465694,
                "maximum": 20.55599976,
                "minimum": -19.87199974,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.55171845,
                "variance": 133.4421991
              },
              {
                "average": 0.5303872142,
                "count": 4465694,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990758189,
                "variance": 0.249076673
              },
              {
                "average": 318.2447299,
                "count": 4465694,
                "maximum": 361,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.68925646,
                "variance": 514.8023589
              },
              {
                "average": 216314833.9,
                "count": 4465694,
                "maximum": 216320246.1,
                "minimum": 216313467.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1847.719521,
                "variance": 3414067.429
              },
              {
                "average": 0.5303872142,
                "count": 4465694,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990758189,
                "variance": 0.249076673
              },
              {
                "average": 0,
                "count": 4465694,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4465694,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4465694,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2587570935,
                "count": 4465694,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4379519415,
                "variance": 0.191801903
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114979.8331,
              2250216.981,
              -6.352901329,
              115472.3131,
              2250693.401,
              1260.967099
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114979.83314248438,
                    2250216.981215475,
                    -6.352901328723874
                  ],
                  [
                    114979.83314248438,
                    2250693.401215475,
                    -6.352901328723874
                  ],
                  [
                    115472.31314248439,
                    2250693.401215475,
                    1260.967098671276
                  ],
                  [
                    115472.31314248439,
                    2250216.981215475,
                    1260.967098671276
                  ],
                  [
                    114979.83314248438,
                    2250216.981215475,
                    -6.352901328723874
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:06+00:00",
            "end_time": "2018-07-22T16:51:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1109.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97572715559485,
              70.20816032266058,
              3.837856362726598
            ],
            [
              -150.97516362643262,
              70.21250391378484,
              3.837856362726598
            ],
            [
              -150.96238122537258,
              70.21229883876414,
              1269.3178563627266
            ],
            [
              -150.9629471292746,
              70.20795529070863,
              1269.3178563627266
            ],
            [
              -150.97572715559485,
              70.20816032266058,
              3.837856362726598
            ]
          ]
        ]
      },
      "bbox": [
        -150.9757272,
        70.20795529,
        3.837856363,
        -150.9623812,
        70.21250391,
        1269.317856
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:28Z",
        "pc:count": 3863854,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116615.6605,
            "count": 3863854,
            "maximum": 116866.4122,
            "minimum": 116373.9522,
            "name": "X",
            "position": 0,
            "stddev": 138.2882312,
            "variance": 19123.6349
          },
          {
            "average": 2250543.372,
            "count": 3863854,
            "maximum": 2250778.605,
            "minimum": 2250302.185,
            "name": "Y",
            "position": 1,
            "stddev": 134.2022798,
            "variance": 18010.25191
          },
          {
            "average": 6.169312515,
            "count": 3863854,
            "maximum": 1269.317856,
            "minimum": 3.837856363,
            "name": "Z",
            "position": 2,
            "stddev": 9.933315429,
            "variance": 98.67075541
          },
          {
            "average": 42235.09044,
            "count": 3863854,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14169.46367,
            "variance": 200773700.6
          },
          {
            "average": 1.000002847,
            "count": 3863854,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001687273271,
            "variance": 2.846891091e-06
          },
          {
            "average": 1.000005694,
            "count": 3863854,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002386161347,
            "variance": 5.693765973e-06
          },
          {
            "average": 0.50130595,
            "count": 3863854,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983592,
            "variance": 0.2499983592
          },
          {
            "average": 0.0004917370066,
            "count": 3863854,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02216969392,
            "variance": 0.0004914953285
          },
          {
            "average": 1.278362485,
            "count": 3863854,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9626337788,
            "variance": 0.926663792
          },
          {
            "average": 0.6521526713,
            "count": 3863854,
            "maximum": 20.56200027,
            "minimum": -19.87800026,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.62236292,
            "variance": 135.0793198
          },
          {
            "average": 0.5179579767,
            "count": 3863854,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996774717,
            "variance": 0.2496775757
          },
          {
            "average": 315.288418,
            "count": 3863854,
            "maximum": 361,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.35338472,
            "variance": 593.0873474
          },
          {
            "average": 216314160.1,
            "count": 3863854,
            "maximum": 216320268.4,
            "minimum": 216312572.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2189.497347,
            "variance": 4793898.631
          },
          {
            "average": 0.5179579767,
            "count": 3863854,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996774717,
            "variance": 0.2496775757
          },
          {
            "average": 0,
            "count": 3863854,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3863854,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3863854,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2753204443,
            "count": 3863854,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4466756641,
            "variance": 0.1995191489
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116373.9522,
          2250302.185,
          3.837856363,
          116866.4122,
          2250778.605,
          1269.317856
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116373.95216794986,
                2250302.184782454,
                3.837856362726598
              ],
              [
                116373.95216794986,
                2250778.6047824537,
                3.837856362726598
              ],
              [
                116866.41216794985,
                2250778.6047824537,
                1269.3178563627266
              ],
              [
                116866.41216794985,
                2250302.184782454,
                1269.3178563627266
              ],
              [
                116373.95216794986,
                2250302.184782454,
                3.837856362726598
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:28+00:00",
        "end_time": "2018-07-22T16:36:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1109.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1109.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1109.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1109.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9757272,
            70.20795529,
            3.837856363,
            -150.9623812,
            70.21250391,
            1269.317856
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97572715559485,
                  70.20816032266058,
                  3.837856362726598
                ],
                [
                  -150.97516362643262,
                  70.21250391378484,
                  3.837856362726598
                ],
                [
                  -150.96238122537258,
                  70.21229883876414,
                  1269.3178563627266
                ],
                [
                  -150.9629471292746,
                  70.20795529070863,
                  1269.3178563627266
                ],
                [
                  -150.97572715559485,
                  70.20816032266058,
                  3.837856362726598
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1109.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1109.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:28Z",
            "pc:count": 3863854,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116615.6605,
                "count": 3863854,
                "maximum": 116866.4122,
                "minimum": 116373.9522,
                "name": "X",
                "position": 0,
                "stddev": 138.2882312,
                "variance": 19123.6349
              },
              {
                "average": 2250543.372,
                "count": 3863854,
                "maximum": 2250778.605,
                "minimum": 2250302.185,
                "name": "Y",
                "position": 1,
                "stddev": 134.2022798,
                "variance": 18010.25191
              },
              {
                "average": 6.169312515,
                "count": 3863854,
                "maximum": 1269.317856,
                "minimum": 3.837856363,
                "name": "Z",
                "position": 2,
                "stddev": 9.933315429,
                "variance": 98.67075541
              },
              {
                "average": 42235.09044,
                "count": 3863854,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14169.46367,
                "variance": 200773700.6
              },
              {
                "average": 1.000002847,
                "count": 3863854,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001687273271,
                "variance": 2.846891091e-06
              },
              {
                "average": 1.000005694,
                "count": 3863854,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002386161347,
                "variance": 5.693765973e-06
              },
              {
                "average": 0.50130595,
                "count": 3863854,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983592,
                "variance": 0.2499983592
              },
              {
                "average": 0.0004917370066,
                "count": 3863854,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02216969392,
                "variance": 0.0004914953285
              },
              {
                "average": 1.278362485,
                "count": 3863854,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9626337788,
                "variance": 0.926663792
              },
              {
                "average": 0.6521526713,
                "count": 3863854,
                "maximum": 20.56200027,
                "minimum": -19.87800026,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.62236292,
                "variance": 135.0793198
              },
              {
                "average": 0.5179579767,
                "count": 3863854,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996774717,
                "variance": 0.2496775757
              },
              {
                "average": 315.288418,
                "count": 3863854,
                "maximum": 361,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.35338472,
                "variance": 593.0873474
              },
              {
                "average": 216314160.1,
                "count": 3863854,
                "maximum": 216320268.4,
                "minimum": 216312572.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2189.497347,
                "variance": 4793898.631
              },
              {
                "average": 0.5179579767,
                "count": 3863854,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996774717,
                "variance": 0.2496775757
              },
              {
                "average": 0,
                "count": 3863854,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3863854,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3863854,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2753204443,
                "count": 3863854,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4466756641,
                "variance": 0.1995191489
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116373.9522,
              2250302.185,
              3.837856363,
              116866.4122,
              2250778.605,
              1269.317856
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116373.95216794986,
                    2250302.184782454,
                    3.837856362726598
                  ],
                  [
                    116373.95216794986,
                    2250778.6047824537,
                    3.837856362726598
                  ],
                  [
                    116866.41216794985,
                    2250778.6047824537,
                    1269.3178563627266
                  ],
                  [
                    116866.41216794985,
                    2250302.184782454,
                    1269.3178563627266
                  ],
                  [
                    116373.95216794986,
                    2250302.184782454,
                    3.837856362726598
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:28+00:00",
            "end_time": "2018-07-22T16:36:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1211.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9761145807849,
              70.21635559224524,
              -12.399775543384317
            ],
            [
              -150.9755509020731,
              70.2206995624938,
              -12.399775543384317
            ],
            [
              -150.96276400522893,
              70.22049450426519,
              18.30022445661568
            ],
            [
              -150.96333006045208,
              70.21615057710505,
              18.30022445661568
            ],
            [
              -150.9761145807849,
              70.21635559224524,
              -12.399775543384317
            ]
          ]
        ]
      },
      "bbox": [
        -150.9761146,
        70.21615058,
        -12.39977554,
        -150.962764,
        70.22069956,
        18.30022446
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:08Z",
        "pc:count": 4504544,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116566.8871,
            "count": 4504544,
            "maximum": 116810.6425,
            "minimum": 116318.1825,
            "name": "X",
            "position": 0,
            "stddev": 135.0867318,
            "variance": 18248.42512
          },
          {
            "average": 2251424.281,
            "count": 4504544,
            "maximum": 2251674.959,
            "minimum": 2251198.519,
            "name": "Y",
            "position": 1,
            "stddev": 126.9911113,
            "variance": 16126.74235
          },
          {
            "average": 5.138427016,
            "count": 4504544,
            "maximum": 18.30022446,
            "minimum": -12.39977554,
            "name": "Z",
            "position": 2,
            "stddev": 2.702709703,
            "variance": 7.304639739
          },
          {
            "average": 31231.59706,
            "count": 4504544,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14842.11699,
            "variance": 220288436.9
          },
          {
            "average": 1.000161837,
            "count": 4504544,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01272047271,
            "variance": 0.0001618104259
          },
          {
            "average": 1.000324561,
            "count": 4504544,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01801265906,
            "variance": 0.0003244558863
          },
          {
            "average": 0.4992884962,
            "count": 4504544,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995493,
            "variance": 0.2499995493
          },
          {
            "average": 0.0004986076282,
            "count": 4504544,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02232395864,
            "variance": 0.0004983591293
          },
          {
            "average": 2.473374885,
            "count": 4504544,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.940294279,
            "variance": 8.645330446
          },
          {
            "average": 1.460701132,
            "count": 4504544,
            "maximum": 20.49600029,
            "minimum": -20.01600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.0342888,
            "variance": 121.7555294
          },
          {
            "average": 0.5121086618,
            "count": 4504544,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998534143,
            "variance": 0.2498534358
          },
          {
            "average": 320.4164581,
            "count": 4504544,
            "maximum": 358,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.26174176,
            "variance": 689.6790804
          },
          {
            "average": 216314492.7,
            "count": 4504544,
            "maximum": 216317848,
            "minimum": 216312588.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2167.462184,
            "variance": 4697892.318
          },
          {
            "average": 0.5121086618,
            "count": 4504544,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998534143,
            "variance": 0.2498534358
          },
          {
            "average": 0,
            "count": 4504544,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4504544,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4504544,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1816063957,
            "count": 4504544,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3855198383,
            "variance": 0.1486255457
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116318.1825,
          2251198.519,
          -12.39977554,
          116810.6425,
          2251674.959,
          18.30022446
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116318.18253574906,
                2251198.519038815,
                -12.399775543384317
              ],
              [
                116318.18253574906,
                2251674.9590388155,
                -12.399775543384317
              ],
              [
                116810.64253574905,
                2251674.9590388155,
                18.30022445661568
              ],
              [
                116810.64253574905,
                2251198.519038815,
                18.30022445661568
              ],
              [
                116318.18253574906,
                2251198.519038815,
                -12.399775543384317
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:08+00:00",
        "end_time": "2018-07-22T16:36:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1211.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1211.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1211.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1211.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9761146,
            70.21615058,
            -12.39977554,
            -150.962764,
            70.22069956,
            18.30022446
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9761145807849,
                  70.21635559224524,
                  -12.399775543384317
                ],
                [
                  -150.9755509020731,
                  70.2206995624938,
                  -12.399775543384317
                ],
                [
                  -150.96276400522893,
                  70.22049450426519,
                  18.30022445661568
                ],
                [
                  -150.96333006045208,
                  70.21615057710505,
                  18.30022445661568
                ],
                [
                  -150.9761145807849,
                  70.21635559224524,
                  -12.399775543384317
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1211.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1211.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:08Z",
            "pc:count": 4504544,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116566.8871,
                "count": 4504544,
                "maximum": 116810.6425,
                "minimum": 116318.1825,
                "name": "X",
                "position": 0,
                "stddev": 135.0867318,
                "variance": 18248.42512
              },
              {
                "average": 2251424.281,
                "count": 4504544,
                "maximum": 2251674.959,
                "minimum": 2251198.519,
                "name": "Y",
                "position": 1,
                "stddev": 126.9911113,
                "variance": 16126.74235
              },
              {
                "average": 5.138427016,
                "count": 4504544,
                "maximum": 18.30022446,
                "minimum": -12.39977554,
                "name": "Z",
                "position": 2,
                "stddev": 2.702709703,
                "variance": 7.304639739
              },
              {
                "average": 31231.59706,
                "count": 4504544,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14842.11699,
                "variance": 220288436.9
              },
              {
                "average": 1.000161837,
                "count": 4504544,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01272047271,
                "variance": 0.0001618104259
              },
              {
                "average": 1.000324561,
                "count": 4504544,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01801265906,
                "variance": 0.0003244558863
              },
              {
                "average": 0.4992884962,
                "count": 4504544,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995493,
                "variance": 0.2499995493
              },
              {
                "average": 0.0004986076282,
                "count": 4504544,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02232395864,
                "variance": 0.0004983591293
              },
              {
                "average": 2.473374885,
                "count": 4504544,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.940294279,
                "variance": 8.645330446
              },
              {
                "average": 1.460701132,
                "count": 4504544,
                "maximum": 20.49600029,
                "minimum": -20.01600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.0342888,
                "variance": 121.7555294
              },
              {
                "average": 0.5121086618,
                "count": 4504544,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998534143,
                "variance": 0.2498534358
              },
              {
                "average": 320.4164581,
                "count": 4504544,
                "maximum": 358,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.26174176,
                "variance": 689.6790804
              },
              {
                "average": 216314492.7,
                "count": 4504544,
                "maximum": 216317848,
                "minimum": 216312588.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2167.462184,
                "variance": 4697892.318
              },
              {
                "average": 0.5121086618,
                "count": 4504544,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998534143,
                "variance": 0.2498534358
              },
              {
                "average": 0,
                "count": 4504544,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4504544,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4504544,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1816063957,
                "count": 4504544,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3855198383,
                "variance": 0.1486255457
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116318.1825,
              2251198.519,
              -12.39977554,
              116810.6425,
              2251674.959,
              18.30022446
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116318.18253574906,
                    2251198.519038815,
                    -12.399775543384317
                  ],
                  [
                    116318.18253574906,
                    2251674.9590388155,
                    -12.399775543384317
                  ],
                  [
                    116810.64253574905,
                    2251674.9590388155,
                    18.30022445661568
                  ],
                  [
                    116810.64253574905,
                    2251198.519038815,
                    18.30022445661568
                  ],
                  [
                    116318.18253574906,
                    2251198.519038815,
                    -12.399775543384317
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:08+00:00",
            "end_time": "2018-07-22T16:36:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0930.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02328690782792,
              70.19149919108287,
              6.226334691045104
            ],
            [
              -151.02273244447935,
              70.19584398482542,
              6.226334691045104
            ],
            [
              -151.00995926958223,
              70.19564215279757,
              14.646334691045105
            ],
            [
              -151.01051610529115,
              70.19129740141554,
              14.646334691045105
            ],
            [
              -151.02328690782792,
              70.19149919108287,
              6.226334691045104
            ]
          ]
        ]
      },
      "bbox": [
        -151.0232869,
        70.1912974,
        6.226334691,
        -151.0099593,
        70.19584398,
        14.64633469
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:38Z",
        "pc:count": 4630503,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114866.3058,
            "count": 4630503,
            "maximum": 115119.3329,
            "minimum": 114626.8929,
            "name": "X",
            "position": 0,
            "stddev": 137.3217256,
            "variance": 18857.25633
          },
          {
            "average": 2248642.543,
            "count": 4630503,
            "maximum": 2248872.253,
            "minimum": 2248395.673,
            "name": "Y",
            "position": 1,
            "stddev": 123.5675172,
            "variance": 15268.9313
          },
          {
            "average": 11.08615713,
            "count": 4630503,
            "maximum": 14.64633469,
            "minimum": 6.226334691,
            "name": "Z",
            "position": 2,
            "stddev": 1.161693942,
            "variance": 1.349532814
          },
          {
            "average": 49368.7289,
            "count": 4630503,
            "maximum": 65535,
            "minimum": 1547,
            "name": "Intensity",
            "position": 3,
            "stddev": 10770.36257,
            "variance": 116000710
          },
          {
            "average": 1.000000648,
            "count": 4630503,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008049083795,
            "variance": 6.478774993e-07
          },
          {
            "average": 1.000001296,
            "count": 4630503,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001138311978,
            "variance": 1.295754159e-06
          },
          {
            "average": 0.500620127,
            "count": 4630503,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996694,
            "variance": 0.2499996694
          },
          {
            "average": 0.0004597772639,
            "count": 4630503,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02143748978,
            "variance": 0.0004595659681
          },
          {
            "average": 1.19256936,
            "count": 4630503,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3973005592,
            "variance": 0.1578477343
          },
          {
            "average": -0.2134610963,
            "count": 4630503,
            "maximum": 20.48999977,
            "minimum": -19.99799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.60638846,
            "variance": 134.7082531
          },
          {
            "average": 0.4817446398,
            "count": 4630503,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996666846,
            "variance": 0.2496667957
          },
          {
            "average": 325.0251701,
            "count": 4630503,
            "maximum": 364,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.483517,
            "variance": 701.3766724
          },
          {
            "average": 216316361.4,
            "count": 4630503,
            "maximum": 216321538.3,
            "minimum": 216313741.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3332.652165,
            "variance": 11106570.45
          },
          {
            "average": 0.4817446398,
            "count": 4630503,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996666846,
            "variance": 0.2496667957
          },
          {
            "average": 0,
            "count": 4630503,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4630503,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4630503,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2237139248,
            "count": 4630503,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4167325787,
            "variance": 0.1736660422
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114626.8929,
          2248395.673,
          6.226334691,
          115119.3329,
          2248872.253,
          14.64633469
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114626.8928784524,
                2248395.6725523258,
                6.226334691045104
              ],
              [
                114626.8928784524,
                2248872.252552326,
                6.226334691045104
              ],
              [
                115119.3328784524,
                2248872.252552326,
                14.646334691045105
              ],
              [
                115119.3328784524,
                2248395.6725523258,
                14.646334691045105
              ],
              [
                114626.8928784524,
                2248395.6725523258,
                6.226334691045104
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:38+00:00",
        "end_time": "2018-07-22T16:55:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0930.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0930.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0930.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0930.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0232869,
            70.1912974,
            6.226334691,
            -151.0099593,
            70.19584398,
            14.64633469
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02328690782792,
                  70.19149919108287,
                  6.226334691045104
                ],
                [
                  -151.02273244447935,
                  70.19584398482542,
                  6.226334691045104
                ],
                [
                  -151.00995926958223,
                  70.19564215279757,
                  14.646334691045105
                ],
                [
                  -151.01051610529115,
                  70.19129740141554,
                  14.646334691045105
                ],
                [
                  -151.02328690782792,
                  70.19149919108287,
                  6.226334691045104
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0930.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0930.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:38Z",
            "pc:count": 4630503,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114866.3058,
                "count": 4630503,
                "maximum": 115119.3329,
                "minimum": 114626.8929,
                "name": "X",
                "position": 0,
                "stddev": 137.3217256,
                "variance": 18857.25633
              },
              {
                "average": 2248642.543,
                "count": 4630503,
                "maximum": 2248872.253,
                "minimum": 2248395.673,
                "name": "Y",
                "position": 1,
                "stddev": 123.5675172,
                "variance": 15268.9313
              },
              {
                "average": 11.08615713,
                "count": 4630503,
                "maximum": 14.64633469,
                "minimum": 6.226334691,
                "name": "Z",
                "position": 2,
                "stddev": 1.161693942,
                "variance": 1.349532814
              },
              {
                "average": 49368.7289,
                "count": 4630503,
                "maximum": 65535,
                "minimum": 1547,
                "name": "Intensity",
                "position": 3,
                "stddev": 10770.36257,
                "variance": 116000710
              },
              {
                "average": 1.000000648,
                "count": 4630503,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008049083795,
                "variance": 6.478774993e-07
              },
              {
                "average": 1.000001296,
                "count": 4630503,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001138311978,
                "variance": 1.295754159e-06
              },
              {
                "average": 0.500620127,
                "count": 4630503,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996694,
                "variance": 0.2499996694
              },
              {
                "average": 0.0004597772639,
                "count": 4630503,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02143748978,
                "variance": 0.0004595659681
              },
              {
                "average": 1.19256936,
                "count": 4630503,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3973005592,
                "variance": 0.1578477343
              },
              {
                "average": -0.2134610963,
                "count": 4630503,
                "maximum": 20.48999977,
                "minimum": -19.99799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.60638846,
                "variance": 134.7082531
              },
              {
                "average": 0.4817446398,
                "count": 4630503,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996666846,
                "variance": 0.2496667957
              },
              {
                "average": 325.0251701,
                "count": 4630503,
                "maximum": 364,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.483517,
                "variance": 701.3766724
              },
              {
                "average": 216316361.4,
                "count": 4630503,
                "maximum": 216321538.3,
                "minimum": 216313741.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3332.652165,
                "variance": 11106570.45
              },
              {
                "average": 0.4817446398,
                "count": 4630503,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996666846,
                "variance": 0.2496667957
              },
              {
                "average": 0,
                "count": 4630503,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4630503,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4630503,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2237139248,
                "count": 4630503,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4167325787,
                "variance": 0.1736660422
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114626.8929,
              2248395.673,
              6.226334691,
              115119.3329,
              2248872.253,
              14.64633469
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114626.8928784524,
                    2248395.6725523258,
                    6.226334691045104
                  ],
                  [
                    114626.8928784524,
                    2248872.252552326,
                    6.226334691045104
                  ],
                  [
                    115119.3328784524,
                    2248872.252552326,
                    14.646334691045105
                  ],
                  [
                    115119.3328784524,
                    2248395.6725523258,
                    14.646334691045105
                  ],
                  [
                    114626.8928784524,
                    2248395.6725523258,
                    6.226334691045104
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:38+00:00",
            "end_time": "2018-07-22T16:55:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1011.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02369490382867,
              70.19969471035158,
              7.308751208758508
            ],
            [
              -151.02314034498184,
              70.20403951799575,
              7.308751208758508
            ],
            [
              -151.01036008553427,
              70.20383766325726,
              1272.1487512087583
            ],
            [
              -151.01091701879318,
              70.19949289799769,
              1272.1487512087583
            ],
            [
              -151.02369490382867,
              70.19969471035158,
              7.308751208758508
            ]
          ]
        ]
      },
      "bbox": [
        -151.0236949,
        70.1994929,
        7.308751209,
        -151.0103601,
        70.20403952,
        1272.148751
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:10Z",
        "pc:count": 5930151,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114811.9741,
            "count": 5930151,
            "maximum": 115063.4983,
            "minimum": 114570.9583,
            "name": "X",
            "position": 0,
            "stddev": 136.3645831,
            "variance": 18595.29951
          },
          {
            "average": 2249519.592,
            "count": 5930151,
            "maximum": 2249768.68,
            "minimum": 2249292.12,
            "name": "Y",
            "position": 1,
            "stddev": 126.8530932,
            "variance": 16091.70725
          },
          {
            "average": 10.68046704,
            "count": 5930151,
            "maximum": 1272.148751,
            "minimum": 7.308751209,
            "name": "Z",
            "position": 2,
            "stddev": 2.433237883,
            "variance": 5.920646594
          },
          {
            "average": 51101.07563,
            "count": 5930151,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8877.507348,
            "variance": 78810136.71
          },
          {
            "average": 1,
            "count": 5930151,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5930151,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5015255092,
            "count": 5930151,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997715,
            "variance": 0.249997715
          },
          {
            "average": 0.0003391144677,
            "count": 5930151,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01841193978,
            "variance": 0.0003389995263
          },
          {
            "average": 1.161747652,
            "count": 5930151,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.368500728,
            "variance": 0.1357927866
          },
          {
            "average": -0.4371642908,
            "count": 5930151,
            "maximum": 20.55599976,
            "minimum": -19.94400024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39670924,
            "variance": 108.091563
          },
          {
            "average": 0.4792044924,
            "count": 5930151,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995674018,
            "variance": 0.2495675889
          },
          {
            "average": 323.4241518,
            "count": 5930151,
            "maximum": 363,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.62683628,
            "variance": 606.481065
          },
          {
            "average": 216315945.2,
            "count": 5930151,
            "maximum": 216321150,
            "minimum": 216313726.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2692.674466,
            "variance": 7250495.782
          },
          {
            "average": 0.4792044924,
            "count": 5930151,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995674018,
            "variance": 0.2495675889
          },
          {
            "average": 0,
            "count": 5930151,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5930151,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5930151,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1716387998,
            "count": 5930151,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3770662358,
            "variance": 0.1421789461
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114570.9583,
          2249292.12,
          7.308751209,
          115063.4983,
          2249768.68,
          1272.148751
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114570.95829184708,
                2249292.1198500404,
                7.308751208758508
              ],
              [
                114570.95829184708,
                2249768.67985004,
                7.308751208758508
              ],
              [
                115063.49829184709,
                2249768.67985004,
                1272.1487512087583
              ],
              [
                115063.49829184709,
                2249292.1198500404,
                1272.1487512087583
              ],
              [
                114570.95829184708,
                2249292.1198500404,
                7.308751208758508
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:10+00:00",
        "end_time": "2018-07-22T16:55:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1011.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1011.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1011.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1011.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0236949,
            70.1994929,
            7.308751209,
            -151.0103601,
            70.20403952,
            1272.148751
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02369490382867,
                  70.19969471035158,
                  7.308751208758508
                ],
                [
                  -151.02314034498184,
                  70.20403951799575,
                  7.308751208758508
                ],
                [
                  -151.01036008553427,
                  70.20383766325726,
                  1272.1487512087583
                ],
                [
                  -151.01091701879318,
                  70.19949289799769,
                  1272.1487512087583
                ],
                [
                  -151.02369490382867,
                  70.19969471035158,
                  7.308751208758508
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1011.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1011.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:10Z",
            "pc:count": 5930151,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114811.9741,
                "count": 5930151,
                "maximum": 115063.4983,
                "minimum": 114570.9583,
                "name": "X",
                "position": 0,
                "stddev": 136.3645831,
                "variance": 18595.29951
              },
              {
                "average": 2249519.592,
                "count": 5930151,
                "maximum": 2249768.68,
                "minimum": 2249292.12,
                "name": "Y",
                "position": 1,
                "stddev": 126.8530932,
                "variance": 16091.70725
              },
              {
                "average": 10.68046704,
                "count": 5930151,
                "maximum": 1272.148751,
                "minimum": 7.308751209,
                "name": "Z",
                "position": 2,
                "stddev": 2.433237883,
                "variance": 5.920646594
              },
              {
                "average": 51101.07563,
                "count": 5930151,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8877.507348,
                "variance": 78810136.71
              },
              {
                "average": 1,
                "count": 5930151,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5930151,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5015255092,
                "count": 5930151,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997715,
                "variance": 0.249997715
              },
              {
                "average": 0.0003391144677,
                "count": 5930151,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01841193978,
                "variance": 0.0003389995263
              },
              {
                "average": 1.161747652,
                "count": 5930151,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.368500728,
                "variance": 0.1357927866
              },
              {
                "average": -0.4371642908,
                "count": 5930151,
                "maximum": 20.55599976,
                "minimum": -19.94400024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39670924,
                "variance": 108.091563
              },
              {
                "average": 0.4792044924,
                "count": 5930151,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995674018,
                "variance": 0.2495675889
              },
              {
                "average": 323.4241518,
                "count": 5930151,
                "maximum": 363,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.62683628,
                "variance": 606.481065
              },
              {
                "average": 216315945.2,
                "count": 5930151,
                "maximum": 216321150,
                "minimum": 216313726.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2692.674466,
                "variance": 7250495.782
              },
              {
                "average": 0.4792044924,
                "count": 5930151,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995674018,
                "variance": 0.2495675889
              },
              {
                "average": 0,
                "count": 5930151,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5930151,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5930151,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1716387998,
                "count": 5930151,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3770662358,
                "variance": 0.1421789461
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114570.9583,
              2249292.12,
              7.308751209,
              115063.4983,
              2249768.68,
              1272.148751
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114570.95829184708,
                    2249292.1198500404,
                    7.308751208758508
                  ],
                  [
                    114570.95829184708,
                    2249768.67985004,
                    7.308751208758508
                  ],
                  [
                    115063.49829184709,
                    2249768.67985004,
                    1272.1487512087583
                  ],
                  [
                    115063.49829184709,
                    2249292.1198500404,
                    1272.1487512087583
                  ],
                  [
                    114570.95829184708,
                    2249292.1198500404,
                    7.308751208758508
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:10+00:00",
            "end_time": "2018-07-22T16:55:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0972.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97514643818397,
              70.19586644547908,
              5.908707487817459
            ],
            [
              -150.9745829795324,
              70.2002106536855,
              5.908707487817459
            ],
            [
              -150.96181146725894,
              70.20000562024764,
              30.00870748781746
            ],
            [
              -150.9623772978726,
              70.1956614550782,
              30.00870748781746
            ],
            [
              -150.97514643818397,
              70.19586644547908,
              5.908707487817459
            ]
          ]
        ]
      },
      "bbox": [
        -150.9751464,
        70.19566146,
        5.908707488,
        -150.9618115,
        70.20021065,
        30.00870749
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:05Z",
        "pc:count": 4685342,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116705.4273,
            "count": 4685342,
            "maximum": 116949.9184,
            "minimum": 116457.6184,
            "name": "X",
            "position": 0,
            "stddev": 140.2039307,
            "variance": 19657.14217
          },
          {
            "average": 2249218.06,
            "count": 4685342,
            "maximum": 2249434.022,
            "minimum": 2248957.502,
            "name": "Y",
            "position": 1,
            "stddev": 133.9242342,
            "variance": 17935.70051
          },
          {
            "average": 6.326283042,
            "count": 4685342,
            "maximum": 30.00870749,
            "minimum": 5.908707488,
            "name": "Z",
            "position": 2,
            "stddev": 0.2128077893,
            "variance": 0.0452871552
          },
          {
            "average": 36728.9869,
            "count": 4685342,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 16124.06085,
            "variance": 259985338.3
          },
          {
            "average": 1.000001921,
            "count": 4685342,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001385958529,
            "variance": 1.920881044e-06
          },
          {
            "average": 1.000003842,
            "count": 4685342,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001960039466,
            "variance": 3.841754709e-06
          },
          {
            "average": 0.5047185456,
            "count": 4685342,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999777882,
            "variance": 0.2499777887
          },
          {
            "average": 0.0004375347627,
            "count": 4685342,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02091275733,
            "variance": 0.0004373434193
          },
          {
            "average": 2.20185741,
            "count": 4685342,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.680427025,
            "variance": 7.184689037
          },
          {
            "average": -1.501694628,
            "count": 4685342,
            "maximum": 20.48999977,
            "minimum": -19.93799973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63364966,
            "variance": 113.074505
          },
          {
            "average": 0.5020455284,
            "count": 4685342,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999958692,
            "variance": 0.2499958692
          },
          {
            "average": 320.4462927,
            "count": 4685342,
            "maximum": 364,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 27.34645617,
            "variance": 747.8286649
          },
          {
            "average": 216315377.6,
            "count": 4685342,
            "maximum": 216321505.8,
            "minimum": 216312548.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3437.385249,
            "variance": 11815617.35
          },
          {
            "average": 0.5020455284,
            "count": 4685342,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999958692,
            "variance": 0.2499958692
          },
          {
            "average": 0,
            "count": 4685342,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4685342,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4685342,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2009134018,
            "count": 4685342,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4006834674,
            "variance": 0.1605472411
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116457.6184,
          2248957.502,
          5.908707488,
          116949.9184,
          2249434.022,
          30.00870749
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116457.61835994257,
                2248957.501596896,
                5.908707487817459
              ],
              [
                116457.61835994257,
                2249434.0215968955,
                5.908707487817459
              ],
              [
                116949.91835994256,
                2249434.0215968955,
                30.00870748781746
              ],
              [
                116949.91835994256,
                2248957.501596896,
                30.00870748781746
              ],
              [
                116457.61835994257,
                2248957.501596896,
                5.908707487817459
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:05+00:00",
        "end_time": "2018-07-22T16:35:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0972.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0972.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0972.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0972.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9751464,
            70.19566146,
            5.908707488,
            -150.9618115,
            70.20021065,
            30.00870749
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97514643818397,
                  70.19586644547908,
                  5.908707487817459
                ],
                [
                  -150.9745829795324,
                  70.2002106536855,
                  5.908707487817459
                ],
                [
                  -150.96181146725894,
                  70.20000562024764,
                  30.00870748781746
                ],
                [
                  -150.9623772978726,
                  70.1956614550782,
                  30.00870748781746
                ],
                [
                  -150.97514643818397,
                  70.19586644547908,
                  5.908707487817459
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0972.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0972.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:05Z",
            "pc:count": 4685342,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116705.4273,
                "count": 4685342,
                "maximum": 116949.9184,
                "minimum": 116457.6184,
                "name": "X",
                "position": 0,
                "stddev": 140.2039307,
                "variance": 19657.14217
              },
              {
                "average": 2249218.06,
                "count": 4685342,
                "maximum": 2249434.022,
                "minimum": 2248957.502,
                "name": "Y",
                "position": 1,
                "stddev": 133.9242342,
                "variance": 17935.70051
              },
              {
                "average": 6.326283042,
                "count": 4685342,
                "maximum": 30.00870749,
                "minimum": 5.908707488,
                "name": "Z",
                "position": 2,
                "stddev": 0.2128077893,
                "variance": 0.0452871552
              },
              {
                "average": 36728.9869,
                "count": 4685342,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 16124.06085,
                "variance": 259985338.3
              },
              {
                "average": 1.000001921,
                "count": 4685342,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001385958529,
                "variance": 1.920881044e-06
              },
              {
                "average": 1.000003842,
                "count": 4685342,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001960039466,
                "variance": 3.841754709e-06
              },
              {
                "average": 0.5047185456,
                "count": 4685342,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999777882,
                "variance": 0.2499777887
              },
              {
                "average": 0.0004375347627,
                "count": 4685342,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02091275733,
                "variance": 0.0004373434193
              },
              {
                "average": 2.20185741,
                "count": 4685342,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.680427025,
                "variance": 7.184689037
              },
              {
                "average": -1.501694628,
                "count": 4685342,
                "maximum": 20.48999977,
                "minimum": -19.93799973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63364966,
                "variance": 113.074505
              },
              {
                "average": 0.5020455284,
                "count": 4685342,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999958692,
                "variance": 0.2499958692
              },
              {
                "average": 320.4462927,
                "count": 4685342,
                "maximum": 364,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 27.34645617,
                "variance": 747.8286649
              },
              {
                "average": 216315377.6,
                "count": 4685342,
                "maximum": 216321505.8,
                "minimum": 216312548.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3437.385249,
                "variance": 11815617.35
              },
              {
                "average": 0.5020455284,
                "count": 4685342,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999958692,
                "variance": 0.2499958692
              },
              {
                "average": 0,
                "count": 4685342,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4685342,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4685342,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2009134018,
                "count": 4685342,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4006834674,
                "variance": 0.1605472411
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116457.6184,
              2248957.502,
              5.908707488,
              116949.9184,
              2249434.022,
              30.00870749
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116457.61835994257,
                    2248957.501596896,
                    5.908707487817459
                  ],
                  [
                    116457.61835994257,
                    2249434.0215968955,
                    5.908707487817459
                  ],
                  [
                    116949.91835994256,
                    2249434.0215968955,
                    30.00870748781746
                  ],
                  [
                    116949.91835994256,
                    2248957.501596896,
                    30.00870748781746
                  ],
                  [
                    116457.61835994257,
                    2248957.501596896,
                    5.908707487817459
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:05+00:00",
            "end_time": "2018-07-22T16:35:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1259.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0126096502258,
              70.2202526596765,
              -2.934943236643221
            ],
            [
              -151.0120526300455,
              70.22459719592213,
              -2.934943236643221
            ],
            [
              -150.99926431474924,
              70.22439461767364,
              621.7650567633568
            ],
            [
              -150.99982371247984,
              70.22005012401002,
              621.7650567633568
            ],
            [
              -151.0126096502258,
              70.2202526596765,
              -2.934943236643221
            ]
          ]
        ]
      },
      "bbox": [
        -151.0126097,
        70.22005012,
        -2.934943237,
        -150.9992643,
        70.2245972,
        621.7650568
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:32Z",
        "pc:count": 4309975,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115148.4624,
            "count": 4309975,
            "maximum": 115388.5184,
            "minimum": 114896.0984,
            "name": "X",
            "position": 0,
            "stddev": 135.3543048,
            "variance": 18320.78784
          },
          {
            "average": 2251796.966,
            "count": 4309975,
            "maximum": 2252038.014,
            "minimum": 2251561.534,
            "name": "Y",
            "position": 1,
            "stddev": 133.2359018,
            "variance": 17751.80553
          },
          {
            "average": 12.39592232,
            "count": 4309975,
            "maximum": 621.7650568,
            "minimum": -2.934943237,
            "name": "Z",
            "position": 2,
            "stddev": 5.161540805,
            "variance": 26.64150349
          },
          {
            "average": 43416.08911,
            "count": 4309975,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12946.22184,
            "variance": 167604659.9
          },
          {
            "average": 1.007958283,
            "count": 4309975,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09047598255,
            "variance": 0.008185903418
          },
          {
            "average": 1.015913317,
            "count": 4309975,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1285841145,
            "variance": 0.0165338745
          },
          {
            "average": 0.5038892337,
            "count": 4309975,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999849316,
            "variance": 0.2499849319
          },
          {
            "average": 0.0004714644516,
            "count": 4309975,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02170811559,
            "variance": 0.0004712422823
          },
          {
            "average": 1.317984675,
            "count": 4309975,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8247941151,
            "variance": 0.6802853323
          },
          {
            "average": -0.5520564313,
            "count": 4309975,
            "maximum": 20.48399925,
            "minimum": -20.18400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.11210154,
            "variance": 123.4788006
          },
          {
            "average": 0.5304014524,
            "count": 4309975,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990749538,
            "variance": 0.2490758095
          },
          {
            "average": 316.9454897,
            "count": 4309975,
            "maximum": 358,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.21860462,
            "variance": 450.2291822
          },
          {
            "average": 216314563.3,
            "count": 4309975,
            "maximum": 216317872.2,
            "minimum": 216313490.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1425.214689,
            "variance": 2031236.909
          },
          {
            "average": 0.5304014524,
            "count": 4309975,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990749538,
            "variance": 0.2490758095
          },
          {
            "average": 0,
            "count": 4309975,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4309975,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4309975,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2370194723,
            "count": 4309975,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4252543756,
            "variance": 0.180841284
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114896.0984,
          2251561.534,
          -2.934943237,
          115388.5184,
          2252038.014,
          621.7650568
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114896.09844387155,
                2251561.5337164304,
                -2.934943236643221
              ],
              [
                114896.09844387155,
                2252038.013716431,
                -2.934943236643221
              ],
              [
                115388.51844387157,
                2252038.013716431,
                621.7650567633568
              ],
              [
                115388.51844387157,
                2251561.5337164304,
                621.7650567633568
              ],
              [
                114896.09844387155,
                2251561.5337164304,
                -2.934943236643221
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:32+00:00",
        "end_time": "2018-07-22T16:51:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1259.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1259.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1259.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1259.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0126097,
            70.22005012,
            -2.934943237,
            -150.9992643,
            70.2245972,
            621.7650568
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0126096502258,
                  70.2202526596765,
                  -2.934943236643221
                ],
                [
                  -151.0120526300455,
                  70.22459719592213,
                  -2.934943236643221
                ],
                [
                  -150.99926431474924,
                  70.22439461767364,
                  621.7650567633568
                ],
                [
                  -150.99982371247984,
                  70.22005012401002,
                  621.7650567633568
                ],
                [
                  -151.0126096502258,
                  70.2202526596765,
                  -2.934943236643221
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1259.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1259.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:32Z",
            "pc:count": 4309975,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115148.4624,
                "count": 4309975,
                "maximum": 115388.5184,
                "minimum": 114896.0984,
                "name": "X",
                "position": 0,
                "stddev": 135.3543048,
                "variance": 18320.78784
              },
              {
                "average": 2251796.966,
                "count": 4309975,
                "maximum": 2252038.014,
                "minimum": 2251561.534,
                "name": "Y",
                "position": 1,
                "stddev": 133.2359018,
                "variance": 17751.80553
              },
              {
                "average": 12.39592232,
                "count": 4309975,
                "maximum": 621.7650568,
                "minimum": -2.934943237,
                "name": "Z",
                "position": 2,
                "stddev": 5.161540805,
                "variance": 26.64150349
              },
              {
                "average": 43416.08911,
                "count": 4309975,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12946.22184,
                "variance": 167604659.9
              },
              {
                "average": 1.007958283,
                "count": 4309975,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09047598255,
                "variance": 0.008185903418
              },
              {
                "average": 1.015913317,
                "count": 4309975,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1285841145,
                "variance": 0.0165338745
              },
              {
                "average": 0.5038892337,
                "count": 4309975,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999849316,
                "variance": 0.2499849319
              },
              {
                "average": 0.0004714644516,
                "count": 4309975,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02170811559,
                "variance": 0.0004712422823
              },
              {
                "average": 1.317984675,
                "count": 4309975,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8247941151,
                "variance": 0.6802853323
              },
              {
                "average": -0.5520564313,
                "count": 4309975,
                "maximum": 20.48399925,
                "minimum": -20.18400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.11210154,
                "variance": 123.4788006
              },
              {
                "average": 0.5304014524,
                "count": 4309975,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990749538,
                "variance": 0.2490758095
              },
              {
                "average": 316.9454897,
                "count": 4309975,
                "maximum": 358,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.21860462,
                "variance": 450.2291822
              },
              {
                "average": 216314563.3,
                "count": 4309975,
                "maximum": 216317872.2,
                "minimum": 216313490.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1425.214689,
                "variance": 2031236.909
              },
              {
                "average": 0.5304014524,
                "count": 4309975,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990749538,
                "variance": 0.2490758095
              },
              {
                "average": 0,
                "count": 4309975,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4309975,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4309975,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2370194723,
                "count": 4309975,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4252543756,
                "variance": 0.180841284
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114896.0984,
              2251561.534,
              -2.934943237,
              115388.5184,
              2252038.014,
              621.7650568
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114896.09844387155,
                    2251561.5337164304,
                    -2.934943236643221
                  ],
                  [
                    114896.09844387155,
                    2252038.013716431,
                    -2.934943236643221
                  ],
                  [
                    115388.51844387157,
                    2252038.013716431,
                    621.7650567633568
                  ],
                  [
                    115388.51844387157,
                    2251561.5337164304,
                    621.7650567633568
                  ],
                  [
                    114896.09844387155,
                    2251561.5337164304,
                    -2.934943236643221
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:32+00:00",
            "end_time": "2018-07-22T16:51:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1156.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02430375319747,
              70.2119884303244,
              9.30284433989118
            ],
            [
              -151.0237491085987,
              70.2163328035006,
              9.30284433989118
            ],
            [
              -151.01096262679178,
              70.21613098428782,
              1259.6028443398911
            ],
            [
              -151.0115196478145,
              70.21178665351319,
              1259.6028443398911
            ],
            [
              -151.02430375319747,
              70.2119884303244,
              9.30284433989118
            ]
          ]
        ]
      },
      "bbox": [
        -151.0243038,
        70.21178665,
        9.30284434,
        -151.0109626,
        70.2163328,
        1259.602844
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:09Z",
        "pc:count": 4737335,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114730.046,
            "count": 4737335,
            "maximum": 114979.7192,
            "minimum": 114487.1992,
            "name": "X",
            "position": 0,
            "stddev": 136.9565512,
            "variance": 18757.09692
          },
          {
            "average": 2250867.413,
            "count": 4737335,
            "maximum": 2251113.25,
            "minimum": 2250636.77,
            "name": "Y",
            "position": 1,
            "stddev": 129.4549184,
            "variance": 16758.5759
          },
          {
            "average": 10.47709042,
            "count": 4737335,
            "maximum": 1259.602844,
            "minimum": 9.30284434,
            "name": "Z",
            "position": 2,
            "stddev": 1.920826435,
            "variance": 3.689574193
          },
          {
            "average": 40536.60449,
            "count": 4737335,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11985.73043,
            "variance": 143657733.9
          },
          {
            "average": 1.001448705,
            "count": 4737335,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0390745475,
            "variance": 0.001526820262
          },
          {
            "average": 1.002905431,
            "count": 4737335,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05602210388,
            "variance": 0.003138476123
          },
          {
            "average": 0.498587497,
            "count": 4737335,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999980576,
            "variance": 0.2499980576
          },
          {
            "average": 0.0003622289747,
            "count": 4737335,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01902886863,
            "variance": 0.0003620978413
          },
          {
            "average": 1.194107658,
            "count": 4737335,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4336933353,
            "variance": 0.188089909
          },
          {
            "average": 1.257993964,
            "count": 4737335,
            "maximum": 20.54400063,
            "minimum": -16.95599937,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60706557,
            "variance": 112.50984
          },
          {
            "average": 0.4795806081,
            "count": 4737335,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995829272,
            "variance": 0.2495831011
          },
          {
            "average": 323.5506315,
            "count": 4737335,
            "maximum": 359,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.0708885,
            "variance": 579.407673
          },
          {
            "average": 216315285.9,
            "count": 4737335,
            "maximum": 216318089.9,
            "minimum": 216313703.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1742.539493,
            "variance": 3036443.885
          },
          {
            "average": 0.4795806081,
            "count": 4737335,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995829272,
            "variance": 0.2495831011
          },
          {
            "average": 0,
            "count": 4737335,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4737335,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4737335,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.199812975,
            "count": 4737335,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3998597051,
            "variance": 0.1598877838
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114487.1992,
          2250636.77,
          9.30284434,
          114979.7192,
          2251113.25,
          1259.602844
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114487.19920154627,
                2250636.770045344,
                9.30284433989118
              ],
              [
                114487.19920154627,
                2251113.2500453442,
                9.30284433989118
              ],
              [
                114979.71920154626,
                2251113.2500453442,
                1259.6028443398911
              ],
              [
                114979.71920154626,
                2250636.770045344,
                1259.6028443398911
              ],
              [
                114487.19920154627,
                2250636.770045344,
                9.30284433989118
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:09+00:00",
        "end_time": "2018-07-22T16:55:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1156.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1156.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1156.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1156.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0243038,
            70.21178665,
            9.30284434,
            -151.0109626,
            70.2163328,
            1259.602844
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02430375319747,
                  70.2119884303244,
                  9.30284433989118
                ],
                [
                  -151.0237491085987,
                  70.2163328035006,
                  9.30284433989118
                ],
                [
                  -151.01096262679178,
                  70.21613098428782,
                  1259.6028443398911
                ],
                [
                  -151.0115196478145,
                  70.21178665351319,
                  1259.6028443398911
                ],
                [
                  -151.02430375319747,
                  70.2119884303244,
                  9.30284433989118
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1156.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1156.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:09Z",
            "pc:count": 4737335,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114730.046,
                "count": 4737335,
                "maximum": 114979.7192,
                "minimum": 114487.1992,
                "name": "X",
                "position": 0,
                "stddev": 136.9565512,
                "variance": 18757.09692
              },
              {
                "average": 2250867.413,
                "count": 4737335,
                "maximum": 2251113.25,
                "minimum": 2250636.77,
                "name": "Y",
                "position": 1,
                "stddev": 129.4549184,
                "variance": 16758.5759
              },
              {
                "average": 10.47709042,
                "count": 4737335,
                "maximum": 1259.602844,
                "minimum": 9.30284434,
                "name": "Z",
                "position": 2,
                "stddev": 1.920826435,
                "variance": 3.689574193
              },
              {
                "average": 40536.60449,
                "count": 4737335,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11985.73043,
                "variance": 143657733.9
              },
              {
                "average": 1.001448705,
                "count": 4737335,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0390745475,
                "variance": 0.001526820262
              },
              {
                "average": 1.002905431,
                "count": 4737335,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05602210388,
                "variance": 0.003138476123
              },
              {
                "average": 0.498587497,
                "count": 4737335,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999980576,
                "variance": 0.2499980576
              },
              {
                "average": 0.0003622289747,
                "count": 4737335,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01902886863,
                "variance": 0.0003620978413
              },
              {
                "average": 1.194107658,
                "count": 4737335,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4336933353,
                "variance": 0.188089909
              },
              {
                "average": 1.257993964,
                "count": 4737335,
                "maximum": 20.54400063,
                "minimum": -16.95599937,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60706557,
                "variance": 112.50984
              },
              {
                "average": 0.4795806081,
                "count": 4737335,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995829272,
                "variance": 0.2495831011
              },
              {
                "average": 323.5506315,
                "count": 4737335,
                "maximum": 359,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.0708885,
                "variance": 579.407673
              },
              {
                "average": 216315285.9,
                "count": 4737335,
                "maximum": 216318089.9,
                "minimum": 216313703.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1742.539493,
                "variance": 3036443.885
              },
              {
                "average": 0.4795806081,
                "count": 4737335,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995829272,
                "variance": 0.2495831011
              },
              {
                "average": 0,
                "count": 4737335,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4737335,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4737335,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.199812975,
                "count": 4737335,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3998597051,
                "variance": 0.1598877838
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114487.1992,
              2250636.77,
              9.30284434,
              114979.7192,
              2251113.25,
              1259.602844
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114487.19920154627,
                    2250636.770045344,
                    9.30284433989118
                  ],
                  [
                    114487.19920154627,
                    2251113.2500453442,
                    9.30284433989118
                  ],
                  [
                    114979.71920154626,
                    2251113.2500453442,
                    1259.6028443398911
                  ],
                  [
                    114979.71920154626,
                    2250636.770045344,
                    1259.6028443398911
                  ],
                  [
                    114487.19920154627,
                    2250636.770045344,
                    9.30284433989118
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:09+00:00",
            "end_time": "2018-07-22T16:55:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1058.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97553547756928,
              70.20406183328966,
              5.945573033444703
            ],
            [
              -150.97497196440102,
              70.20840569081548,
              5.945573033444703
            ],
            [
              -150.96219129129696,
              70.20820059918147,
              1275.6055730334447
            ],
            [
              -150.9627571786653,
              70.20385678472083,
              1275.6055730334447
            ],
            [
              -150.97553547756928,
              70.20406183328966,
              5.945573033444703
            ]
          ]
        ]
      },
      "bbox": [
        -150.9755355,
        70.20385678,
        5.945573033,
        -150.9621913,
        70.20840569,
        1275.605573
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:29Z",
        "pc:count": 5071457,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116653.2277,
            "count": 5071457,
            "maximum": 116894.2476,
            "minimum": 116401.7676,
            "name": "X",
            "position": 0,
            "stddev": 138.4172403,
            "variance": 19159.33242
          },
          {
            "average": 2250081.711,
            "count": 5071457,
            "maximum": 2250330.366,
            "minimum": 2249853.906,
            "name": "Y",
            "position": 1,
            "stddev": 134.0385665,
            "variance": 17966.33731
          },
          {
            "average": 6.568202946,
            "count": 5071457,
            "maximum": 1275.605573,
            "minimum": 5.945573033,
            "name": "Z",
            "position": 2,
            "stddev": 1.139351085,
            "variance": 1.298120895
          },
          {
            "average": 44567.43246,
            "count": 5071457,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13841.11804,
            "variance": 191576548.7
          },
          {
            "average": 1.000000197,
            "count": 5071457,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004440517912,
            "variance": 1.971819933e-07
          },
          {
            "average": 1.000000394,
            "count": 5071457,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006279840036,
            "variance": 3.943639088e-07
          },
          {
            "average": 0.5013543445,
            "count": 5071457,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998215,
            "variance": 0.249998215
          },
          {
            "average": 0.0004410961189,
            "count": 5071457,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02099765797,
            "variance": 0.0004409016401
          },
          {
            "average": 1.641594319,
            "count": 5071457,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.953831649,
            "variance": 3.817458114
          },
          {
            "average": 0.4903968947,
            "count": 5071457,
            "maximum": 20.45999908,
            "minimum": -19.90200043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.29742002,
            "variance": 127.631699
          },
          {
            "average": 0.5089533442,
            "count": 5071457,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999198805,
            "variance": 0.2499198869
          },
          {
            "average": 318.0758999,
            "count": 5071457,
            "maximum": 361,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.4582511,
            "variance": 648.1225493
          },
          {
            "average": 216314785.7,
            "count": 5071457,
            "maximum": 216320269.4,
            "minimum": 216312563.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2703.758245,
            "variance": 7310308.647
          },
          {
            "average": 0.5089533442,
            "count": 5071457,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999198805,
            "variance": 0.2499198869
          },
          {
            "average": 0,
            "count": 5071457,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5071457,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5071457,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2123429224,
            "count": 5071457,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.408966305,
            "variance": 0.1672534387
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116401.7676,
          2249853.906,
          5.945573033,
          116894.2476,
          2250330.366,
          1275.605573
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116401.7676102057,
                2249853.905623142,
                5.945573033444703
              ],
              [
                116401.7676102057,
                2250330.365623142,
                5.945573033444703
              ],
              [
                116894.24761020571,
                2250330.365623142,
                1275.6055730334447
              ],
              [
                116894.24761020571,
                2249853.905623142,
                1275.6055730334447
              ],
              [
                116401.7676102057,
                2249853.905623142,
                5.945573033444703
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:29+00:00",
        "end_time": "2018-07-22T16:36:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1058.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1058.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1058.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1058.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9755355,
            70.20385678,
            5.945573033,
            -150.9621913,
            70.20840569,
            1275.605573
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97553547756928,
                  70.20406183328966,
                  5.945573033444703
                ],
                [
                  -150.97497196440102,
                  70.20840569081548,
                  5.945573033444703
                ],
                [
                  -150.96219129129696,
                  70.20820059918147,
                  1275.6055730334447
                ],
                [
                  -150.9627571786653,
                  70.20385678472083,
                  1275.6055730334447
                ],
                [
                  -150.97553547756928,
                  70.20406183328966,
                  5.945573033444703
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1058.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1058.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:29Z",
            "pc:count": 5071457,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116653.2277,
                "count": 5071457,
                "maximum": 116894.2476,
                "minimum": 116401.7676,
                "name": "X",
                "position": 0,
                "stddev": 138.4172403,
                "variance": 19159.33242
              },
              {
                "average": 2250081.711,
                "count": 5071457,
                "maximum": 2250330.366,
                "minimum": 2249853.906,
                "name": "Y",
                "position": 1,
                "stddev": 134.0385665,
                "variance": 17966.33731
              },
              {
                "average": 6.568202946,
                "count": 5071457,
                "maximum": 1275.605573,
                "minimum": 5.945573033,
                "name": "Z",
                "position": 2,
                "stddev": 1.139351085,
                "variance": 1.298120895
              },
              {
                "average": 44567.43246,
                "count": 5071457,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13841.11804,
                "variance": 191576548.7
              },
              {
                "average": 1.000000197,
                "count": 5071457,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004440517912,
                "variance": 1.971819933e-07
              },
              {
                "average": 1.000000394,
                "count": 5071457,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006279840036,
                "variance": 3.943639088e-07
              },
              {
                "average": 0.5013543445,
                "count": 5071457,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998215,
                "variance": 0.249998215
              },
              {
                "average": 0.0004410961189,
                "count": 5071457,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02099765797,
                "variance": 0.0004409016401
              },
              {
                "average": 1.641594319,
                "count": 5071457,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.953831649,
                "variance": 3.817458114
              },
              {
                "average": 0.4903968947,
                "count": 5071457,
                "maximum": 20.45999908,
                "minimum": -19.90200043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.29742002,
                "variance": 127.631699
              },
              {
                "average": 0.5089533442,
                "count": 5071457,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999198805,
                "variance": 0.2499198869
              },
              {
                "average": 318.0758999,
                "count": 5071457,
                "maximum": 361,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.4582511,
                "variance": 648.1225493
              },
              {
                "average": 216314785.7,
                "count": 5071457,
                "maximum": 216320269.4,
                "minimum": 216312563.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2703.758245,
                "variance": 7310308.647
              },
              {
                "average": 0.5089533442,
                "count": 5071457,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999198805,
                "variance": 0.2499198869
              },
              {
                "average": 0,
                "count": 5071457,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5071457,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5071457,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2123429224,
                "count": 5071457,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.408966305,
                "variance": 0.1672534387
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116401.7676,
              2249853.906,
              5.945573033,
              116894.2476,
              2250330.366,
              1275.605573
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116401.7676102057,
                    2249853.905623142,
                    5.945573033444703
                  ],
                  [
                    116401.7676102057,
                    2250330.365623142,
                    5.945573033444703
                  ],
                  [
                    116894.24761020571,
                    2250330.365623142,
                    1275.6055730334447
                  ],
                  [
                    116894.24761020571,
                    2249853.905623142,
                    1275.6055730334447
                  ],
                  [
                    116401.7676102057,
                    2249853.905623142,
                    5.945573033444703
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:29+00:00",
            "end_time": "2018-07-22T16:36:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1206.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03660594720048,
              70.2160170233927,
              9.28604016609728
            ],
            [
              -151.0360536146426,
              70.22036061699202,
              9.28604016609728
            ],
            [
              -151.0232642985607,
              70.22015961709151,
              856.5060401660974
            ],
            [
              -151.0238190080404,
              70.21581606572343,
              856.5060401660974
            ],
            [
              -151.03660594720048,
              70.2160170233927,
              9.28604016609728
            ]
          ]
        ]
      },
      "bbox": [
        -151.0366059,
        70.21581607,
        9.286040166,
        -151.0232643,
        70.22036062,
        856.5060402
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:49Z",
        "pc:count": 4882144,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114246.9858,
            "count": 4882144,
            "maximum": 114487.0486,
            "minimum": 113994.5086,
            "name": "X",
            "position": 0,
            "stddev": 128.9399892,
            "variance": 16625.52082
          },
          {
            "average": 2251302.786,
            "count": 4882144,
            "maximum": 2251532.949,
            "minimum": 2251056.569,
            "name": "Y",
            "position": 1,
            "stddev": 130.3469042,
            "variance": 16990.31544
          },
          {
            "average": 9.675539724,
            "count": 4882144,
            "maximum": 856.5060402,
            "minimum": 9.286040166,
            "name": "Z",
            "position": 2,
            "stddev": 0.5495633722,
            "variance": 0.3020199001
          },
          {
            "average": 36304.95192,
            "count": 4882144,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 7978.947859,
            "variance": 63663608.94
          },
          {
            "average": 1.000000819,
            "count": 4882144,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000905158366,
            "variance": 8.193116676e-07
          },
          {
            "average": 1.000001639,
            "count": 4882144,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001280086713,
            "variance": 1.638621993e-06
          },
          {
            "average": 0.4973605858,
            "count": 4882144,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999930847,
            "variance": 0.2499930847
          },
          {
            "average": 0.0004362837311,
            "count": 4882144,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02088285126,
            "variance": 0.0004360934769
          },
          {
            "average": 1.159449004,
            "count": 4882144,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3664097336,
            "variance": 0.1342560929
          },
          {
            "average": 2.425910045,
            "count": 4882144,
            "maximum": 20.48399925,
            "minimum": -20.05800056,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.24581322,
            "variance": 126.4683149
          },
          {
            "average": 0.5130588119,
            "count": 4882144,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998294895,
            "variance": 0.2498295186
          },
          {
            "average": 325.4878543,
            "count": 4882144,
            "maximum": 358,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.4985863,
            "variance": 552.1835583
          },
          {
            "average": 216315490.7,
            "count": 4882144,
            "maximum": 216317889.3,
            "minimum": 216313930.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1524.469581,
            "variance": 2324007.503
          },
          {
            "average": 0.5130588119,
            "count": 4882144,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998294895,
            "variance": 0.2498295186
          },
          {
            "average": 0,
            "count": 4882144,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4882144,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4882144,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2136579749,
            "count": 4882144,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4098881299,
            "variance": 0.168008279
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          113994.5086,
          2251056.569,
          9.286040166,
          114487.0486,
          2251532.949,
          856.5060402
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                113994.50860235331,
                2251056.5693696323,
                9.28604016609728
              ],
              [
                113994.50860235331,
                2251532.949369632,
                9.28604016609728
              ],
              [
                114487.04860235332,
                2251532.949369632,
                856.5060401660974
              ],
              [
                114487.04860235332,
                2251056.5693696323,
                856.5060401660974
              ],
              [
                113994.50860235331,
                2251056.5693696323,
                9.28604016609728
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:49+00:00",
        "end_time": "2018-07-22T16:58:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1206.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1206.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1206.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1206.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0366059,
            70.21581607,
            9.286040166,
            -151.0232643,
            70.22036062,
            856.5060402
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03660594720048,
                  70.2160170233927,
                  9.28604016609728
                ],
                [
                  -151.0360536146426,
                  70.22036061699202,
                  9.28604016609728
                ],
                [
                  -151.0232642985607,
                  70.22015961709151,
                  856.5060401660974
                ],
                [
                  -151.0238190080404,
                  70.21581606572343,
                  856.5060401660974
                ],
                [
                  -151.03660594720048,
                  70.2160170233927,
                  9.28604016609728
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1206.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1206.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:49Z",
            "pc:count": 4882144,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114246.9858,
                "count": 4882144,
                "maximum": 114487.0486,
                "minimum": 113994.5086,
                "name": "X",
                "position": 0,
                "stddev": 128.9399892,
                "variance": 16625.52082
              },
              {
                "average": 2251302.786,
                "count": 4882144,
                "maximum": 2251532.949,
                "minimum": 2251056.569,
                "name": "Y",
                "position": 1,
                "stddev": 130.3469042,
                "variance": 16990.31544
              },
              {
                "average": 9.675539724,
                "count": 4882144,
                "maximum": 856.5060402,
                "minimum": 9.286040166,
                "name": "Z",
                "position": 2,
                "stddev": 0.5495633722,
                "variance": 0.3020199001
              },
              {
                "average": 36304.95192,
                "count": 4882144,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 7978.947859,
                "variance": 63663608.94
              },
              {
                "average": 1.000000819,
                "count": 4882144,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000905158366,
                "variance": 8.193116676e-07
              },
              {
                "average": 1.000001639,
                "count": 4882144,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001280086713,
                "variance": 1.638621993e-06
              },
              {
                "average": 0.4973605858,
                "count": 4882144,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999930847,
                "variance": 0.2499930847
              },
              {
                "average": 0.0004362837311,
                "count": 4882144,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02088285126,
                "variance": 0.0004360934769
              },
              {
                "average": 1.159449004,
                "count": 4882144,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3664097336,
                "variance": 0.1342560929
              },
              {
                "average": 2.425910045,
                "count": 4882144,
                "maximum": 20.48399925,
                "minimum": -20.05800056,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.24581322,
                "variance": 126.4683149
              },
              {
                "average": 0.5130588119,
                "count": 4882144,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998294895,
                "variance": 0.2498295186
              },
              {
                "average": 325.4878543,
                "count": 4882144,
                "maximum": 358,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.4985863,
                "variance": 552.1835583
              },
              {
                "average": 216315490.7,
                "count": 4882144,
                "maximum": 216317889.3,
                "minimum": 216313930.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1524.469581,
                "variance": 2324007.503
              },
              {
                "average": 0.5130588119,
                "count": 4882144,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998294895,
                "variance": 0.2498295186
              },
              {
                "average": 0,
                "count": 4882144,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4882144,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4882144,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2136579749,
                "count": 4882144,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4098881299,
                "variance": 0.168008279
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              113994.5086,
              2251056.569,
              9.286040166,
              114487.0486,
              2251532.949,
              856.5060402
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    113994.50860235331,
                    2251056.5693696323,
                    9.28604016609728
                  ],
                  [
                    113994.50860235331,
                    2251532.949369632,
                    9.28604016609728
                  ],
                  [
                    114487.04860235332,
                    2251532.949369632,
                    856.5060401660974
                  ],
                  [
                    114487.04860235332,
                    2251056.5693696323,
                    856.5060401660974
                  ],
                  [
                    113994.50860235331,
                    2251056.5693696323,
                    9.28604016609728
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:49+00:00",
            "end_time": "2018-07-22T16:58:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1053.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03598610124016,
              70.20372389282798,
              7.066364189292813
            ],
            [
              -151.03543382838464,
              70.20806810307941,
              7.066364189292813
            ],
            [
              -151.02265281289795,
              70.20786709961486,
              1283.466364189293
            ],
            [
              -151.02320746037665,
              70.20352293157283,
              1283.466364189293
            ],
            [
              -151.03598610124016,
              70.20372389282798,
              7.066364189292813
            ]
          ]
        ]
      },
      "bbox": [
        -151.0359861,
        70.20352293,
        7.066364189,
        -151.0226528,
        70.2080681,
        1283.466364
      ],
      "properties": {
        "datetime": "2018-07-22T18:43:52Z",
        "pc:count": 5536723,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114332.0231,
            "count": 5536723,
            "maximum": 114570.9133,
            "minimum": 114078.4333,
            "name": "X",
            "position": 0,
            "stddev": 130.4996055,
            "variance": 17030.14705
          },
          {
            "average": 2249943.546,
            "count": 5536723,
            "maximum": 2250188.497,
            "minimum": 2249712.017,
            "name": "Y",
            "position": 1,
            "stddev": 126.3286275,
            "variance": 15958.92213
          },
          {
            "average": 9.936260368,
            "count": 5536723,
            "maximum": 1283.466364,
            "minimum": 7.066364189,
            "name": "Z",
            "position": 2,
            "stddev": 1.484842897,
            "variance": 2.20475843
          },
          {
            "average": 50896.84954,
            "count": 5536723,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9887.058799,
            "variance": 97753931.69
          },
          {
            "average": 1.000019867,
            "count": 5536723,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004457236409,
            "variance": 1.98669564e-05
          },
          {
            "average": 1.000039735,
            "count": 5536723,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006303421562,
            "variance": 3.973312338e-05
          },
          {
            "average": 0.499037427,
            "count": 5536723,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999991186,
            "variance": 0.2499991186
          },
          {
            "average": 0.0004164918491,
            "count": 5536723,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02040388342,
            "variance": 0.0004163184588
          },
          {
            "average": 1.184339545,
            "count": 5536723,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3921576332,
            "variance": 0.1537876093
          },
          {
            "average": 1.511872295,
            "count": 5536723,
            "maximum": 20.37000084,
            "minimum": -19.91399956,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.52199168,
            "variance": 132.7562923
          },
          {
            "average": 0.5101761457,
            "count": 5536723,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998964805,
            "variance": 0.2498964912
          },
          {
            "average": 323.7092293,
            "count": 5536723,
            "maximum": 361,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.55931997,
            "variance": 555.0415575
          },
          {
            "average": 216315813.2,
            "count": 5536723,
            "maximum": 216320232,
            "minimum": 216313908.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2141.045144,
            "variance": 4584074.31
          },
          {
            "average": 0.5101761457,
            "count": 5536723,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998964805,
            "variance": 0.2498964912
          },
          {
            "average": 0,
            "count": 5536723,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5536723,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5536723,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2362673733,
            "count": 5536723,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4247883405,
            "variance": 0.1804451342
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114078.4333,
          2249712.017,
          7.066364189,
          114570.9133,
          2250188.497,
          1283.466364
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114078.43330476597,
                2249712.0166625776,
                7.066364189292813
              ],
              [
                114078.43330476597,
                2250188.496662578,
                7.066364189292813
              ],
              [
                114570.91330476599,
                2250188.496662578,
                1283.466364189293
              ],
              [
                114570.91330476599,
                2249712.0166625776,
                1283.466364189293
              ],
              [
                114078.43330476597,
                2249712.0166625776,
                7.066364189292813
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:43:52+00:00",
        "end_time": "2018-07-22T16:58:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1053.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1053.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1053.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1053.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0359861,
            70.20352293,
            7.066364189,
            -151.0226528,
            70.2080681,
            1283.466364
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03598610124016,
                  70.20372389282798,
                  7.066364189292813
                ],
                [
                  -151.03543382838464,
                  70.20806810307941,
                  7.066364189292813
                ],
                [
                  -151.02265281289795,
                  70.20786709961486,
                  1283.466364189293
                ],
                [
                  -151.02320746037665,
                  70.20352293157283,
                  1283.466364189293
                ],
                [
                  -151.03598610124016,
                  70.20372389282798,
                  7.066364189292813
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1053.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1053.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:43:52Z",
            "pc:count": 5536723,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114332.0231,
                "count": 5536723,
                "maximum": 114570.9133,
                "minimum": 114078.4333,
                "name": "X",
                "position": 0,
                "stddev": 130.4996055,
                "variance": 17030.14705
              },
              {
                "average": 2249943.546,
                "count": 5536723,
                "maximum": 2250188.497,
                "minimum": 2249712.017,
                "name": "Y",
                "position": 1,
                "stddev": 126.3286275,
                "variance": 15958.92213
              },
              {
                "average": 9.936260368,
                "count": 5536723,
                "maximum": 1283.466364,
                "minimum": 7.066364189,
                "name": "Z",
                "position": 2,
                "stddev": 1.484842897,
                "variance": 2.20475843
              },
              {
                "average": 50896.84954,
                "count": 5536723,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9887.058799,
                "variance": 97753931.69
              },
              {
                "average": 1.000019867,
                "count": 5536723,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004457236409,
                "variance": 1.98669564e-05
              },
              {
                "average": 1.000039735,
                "count": 5536723,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006303421562,
                "variance": 3.973312338e-05
              },
              {
                "average": 0.499037427,
                "count": 5536723,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999991186,
                "variance": 0.2499991186
              },
              {
                "average": 0.0004164918491,
                "count": 5536723,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02040388342,
                "variance": 0.0004163184588
              },
              {
                "average": 1.184339545,
                "count": 5536723,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3921576332,
                "variance": 0.1537876093
              },
              {
                "average": 1.511872295,
                "count": 5536723,
                "maximum": 20.37000084,
                "minimum": -19.91399956,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.52199168,
                "variance": 132.7562923
              },
              {
                "average": 0.5101761457,
                "count": 5536723,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998964805,
                "variance": 0.2498964912
              },
              {
                "average": 323.7092293,
                "count": 5536723,
                "maximum": 361,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.55931997,
                "variance": 555.0415575
              },
              {
                "average": 216315813.2,
                "count": 5536723,
                "maximum": 216320232,
                "minimum": 216313908.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2141.045144,
                "variance": 4584074.31
              },
              {
                "average": 0.5101761457,
                "count": 5536723,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998964805,
                "variance": 0.2498964912
              },
              {
                "average": 0,
                "count": 5536723,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5536723,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5536723,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2362673733,
                "count": 5536723,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4247883405,
                "variance": 0.1804451342
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114078.4333,
              2249712.017,
              7.066364189,
              114570.9133,
              2250188.497,
              1283.466364
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114078.43330476597,
                    2249712.0166625776,
                    7.066364189292813
                  ],
                  [
                    114078.43330476597,
                    2250188.496662578,
                    7.066364189292813
                  ],
                  [
                    114570.91330476599,
                    2250188.496662578,
                    1283.466364189293
                  ],
                  [
                    114570.91330476599,
                    2249712.0166625776,
                    1283.466364189293
                  ],
                  [
                    114078.43330476597,
                    2249712.0166625776,
                    7.066364189292813
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:43:52+00:00",
            "end_time": "2018-07-22T16:58:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0967.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03557683970422,
              70.1955288831334,
              9.669117076972324
            ],
            [
              -151.03502477732064,
              70.19987216767778,
              9.669117076972324
            ],
            [
              -151.02224877256984,
              70.1996711539253,
              16.229117076972326
            ],
            [
              -151.02280320741195,
              70.19532791156438,
              16.229117076972326
            ],
            [
              -151.03557683970422,
              70.1955288831334,
              9.669117076972324
            ]
          ]
        ]
      },
      "bbox": [
        -151.0355768,
        70.19532791,
        9.669117077,
        -151.0222488,
        70.19987217,
        16.22911708
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:45Z",
        "pc:count": 5446146,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114387.3258,
            "count": 5446146,
            "maximum": 114626.7046,
            "minimum": 114134.2446,
            "name": "X",
            "position": 0,
            "stddev": 130.2228986,
            "variance": 16958.00333
          },
          {
            "average": 2249073.479,
            "count": 5446146,
            "maximum": 2249292.037,
            "minimum": 2248815.637,
            "name": "Y",
            "position": 1,
            "stddev": 127.9683055,
            "variance": 16375.88722
          },
          {
            "average": 10.73405369,
            "count": 5446146,
            "maximum": 16.22911708,
            "minimum": 9.669117077,
            "name": "Z",
            "position": 2,
            "stddev": 0.5379879008,
            "variance": 0.2894309814
          },
          {
            "average": 45967.16493,
            "count": 5446146,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 14807.32353,
            "variance": 219256830.2
          },
          {
            "average": 1.000000367,
            "count": 5446146,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006059967822,
            "variance": 3.672321001e-07
          },
          {
            "average": 1.000000734,
            "count": 5446146,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008570087108,
            "variance": 7.344639304e-07
          },
          {
            "average": 0.5035496661,
            "count": 5446146,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999874456,
            "variance": 0.2499874458
          },
          {
            "average": 0.0004575712807,
            "count": 5446146,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02138602331,
            "variance": 0.0004573619932
          },
          {
            "average": 1.431883758,
            "count": 5446146,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.51633134,
            "variance": 2.299260734
          },
          {
            "average": -1.320708723,
            "count": 5446146,
            "maximum": 20.45400047,
            "minimum": -19.94400024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5781492,
            "variance": 111.8972406
          },
          {
            "average": 0.4908975999,
            "count": 5446146,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999171853,
            "variance": 0.2499171922
          },
          {
            "average": 322.898,
            "count": 5446146,
            "maximum": 364,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.9622,
            "variance": 574.1870287
          },
          {
            "average": 216316105.3,
            "count": 5446146,
            "maximum": 216321545.5,
            "minimum": 216313893.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2779.376442,
            "variance": 7724933.408
          },
          {
            "average": 0.4908975999,
            "count": 5446146,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999171853,
            "variance": 0.2499171922
          },
          {
            "average": 0,
            "count": 5446146,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5446146,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5446146,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2354777121,
            "count": 5446146,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4242970566,
            "variance": 0.1800279923
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114134.2446,
          2248815.637,
          9.669117077,
          114626.7046,
          2249292.037,
          16.22911708
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114134.24458487704,
                2248815.6366638727,
                9.669117076972324
              ],
              [
                114134.24458487704,
                2249292.036663873,
                9.669117076972324
              ],
              [
                114626.70458487704,
                2249292.036663873,
                16.229117076972326
              ],
              [
                114626.70458487704,
                2248815.6366638727,
                16.229117076972326
              ],
              [
                114134.24458487704,
                2248815.6366638727,
                9.669117076972324
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:45+00:00",
        "end_time": "2018-07-22T16:58:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0967.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0967.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0967.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0967.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0355768,
            70.19532791,
            9.669117077,
            -151.0222488,
            70.19987217,
            16.22911708
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03557683970422,
                  70.1955288831334,
                  9.669117076972324
                ],
                [
                  -151.03502477732064,
                  70.19987216767778,
                  9.669117076972324
                ],
                [
                  -151.02224877256984,
                  70.1996711539253,
                  16.229117076972326
                ],
                [
                  -151.02280320741195,
                  70.19532791156438,
                  16.229117076972326
                ],
                [
                  -151.03557683970422,
                  70.1955288831334,
                  9.669117076972324
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0967.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0967.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:45Z",
            "pc:count": 5446146,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114387.3258,
                "count": 5446146,
                "maximum": 114626.7046,
                "minimum": 114134.2446,
                "name": "X",
                "position": 0,
                "stddev": 130.2228986,
                "variance": 16958.00333
              },
              {
                "average": 2249073.479,
                "count": 5446146,
                "maximum": 2249292.037,
                "minimum": 2248815.637,
                "name": "Y",
                "position": 1,
                "stddev": 127.9683055,
                "variance": 16375.88722
              },
              {
                "average": 10.73405369,
                "count": 5446146,
                "maximum": 16.22911708,
                "minimum": 9.669117077,
                "name": "Z",
                "position": 2,
                "stddev": 0.5379879008,
                "variance": 0.2894309814
              },
              {
                "average": 45967.16493,
                "count": 5446146,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 14807.32353,
                "variance": 219256830.2
              },
              {
                "average": 1.000000367,
                "count": 5446146,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006059967822,
                "variance": 3.672321001e-07
              },
              {
                "average": 1.000000734,
                "count": 5446146,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008570087108,
                "variance": 7.344639304e-07
              },
              {
                "average": 0.5035496661,
                "count": 5446146,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999874456,
                "variance": 0.2499874458
              },
              {
                "average": 0.0004575712807,
                "count": 5446146,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02138602331,
                "variance": 0.0004573619932
              },
              {
                "average": 1.431883758,
                "count": 5446146,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.51633134,
                "variance": 2.299260734
              },
              {
                "average": -1.320708723,
                "count": 5446146,
                "maximum": 20.45400047,
                "minimum": -19.94400024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5781492,
                "variance": 111.8972406
              },
              {
                "average": 0.4908975999,
                "count": 5446146,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999171853,
                "variance": 0.2499171922
              },
              {
                "average": 322.898,
                "count": 5446146,
                "maximum": 364,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.9622,
                "variance": 574.1870287
              },
              {
                "average": 216316105.3,
                "count": 5446146,
                "maximum": 216321545.5,
                "minimum": 216313893.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2779.376442,
                "variance": 7724933.408
              },
              {
                "average": 0.4908975999,
                "count": 5446146,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999171853,
                "variance": 0.2499171922
              },
              {
                "average": 0,
                "count": 5446146,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5446146,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5446146,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2354777121,
                "count": 5446146,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4242970566,
                "variance": 0.1800279923
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114134.2446,
              2248815.637,
              9.669117077,
              114626.7046,
              2249292.037,
              16.22911708
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114134.24458487704,
                    2248815.6366638727,
                    9.669117076972324
                  ],
                  [
                    114134.24458487704,
                    2249292.036663873,
                    9.669117076972324
                  ],
                  [
                    114626.70458487704,
                    2249292.036663873,
                    16.229117076972326
                  ],
                  [
                    114626.70458487704,
                    2248815.6366638727,
                    16.229117076972326
                  ],
                  [
                    114134.24458487704,
                    2248815.6366638727,
                    9.669117076972324
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:45+00:00",
            "end_time": "2018-07-22T16:58:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1159.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9880181989356,
              70.2121915559532,
              -27.269932524238357
            ],
            [
              -150.9874567671705,
              70.21653600923044,
              -27.269932524238357
            ],
            [
              -150.97466997136723,
              70.2163317274626,
              1264.4300674757617
            ],
            [
              -150.97523377955838,
              70.21198731710554,
              1264.4300674757617
            ],
            [
              -150.9880181989356,
              70.2121915559532,
              -27.269932524238357
            ]
          ]
        ]
      },
      "bbox": [
        -150.9880182,
        70.21198732,
        -27.26993252,
        -150.97467,
        70.21653601,
        1264.430067
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:32Z",
        "pc:count": 4635614,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116120.103,
            "count": 4635614,
            "maximum": 116373.8322,
            "minimum": 115881.2922,
            "name": "X",
            "position": 0,
            "stddev": 130.7361042,
            "variance": 17091.92894
          },
          {
            "average": 2250957.183,
            "count": 4635614,
            "maximum": 2251198.438,
            "minimum": 2250721.938,
            "name": "Y",
            "position": 1,
            "stddev": 127.7217913,
            "variance": 16312.85597
          },
          {
            "average": 7.177623983,
            "count": 4635614,
            "maximum": 1264.430067,
            "minimum": -27.26993252,
            "name": "Z",
            "position": 2,
            "stddev": 3.009012371,
            "variance": 9.05415545
          },
          {
            "average": 48068.08681,
            "count": 4635614,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10043.61396,
            "variance": 100874181.5
          },
          {
            "average": 1.000306971,
            "count": 4635614,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01788352059,
            "variance": 0.0003198203086
          },
          {
            "average": 1.000596038,
            "count": 4635614,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02508654864,
            "variance": 0.0006293349225
          },
          {
            "average": 0.4979480604,
            "count": 4635614,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958435,
            "variance": 0.2499958435
          },
          {
            "average": 0.0003757862497,
            "count": 4635614,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01938156638,
            "variance": 0.0003756451154
          },
          {
            "average": 1.205916412,
            "count": 4635614,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4416850415,
            "variance": 0.1950856759
          },
          {
            "average": 2.328342038,
            "count": 4635614,
            "maximum": 20.56200027,
            "minimum": -16.78199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.14813415,
            "variance": 102.9846266
          },
          {
            "average": 0.4960581274,
            "count": 4635614,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999845153,
            "variance": 0.2499845156
          },
          {
            "average": 319.7742165,
            "count": 4635614,
            "maximum": 359,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.42539782,
            "variance": 646.4508543
          },
          {
            "average": 216314613.6,
            "count": 4635614,
            "maximum": 216318112.3,
            "minimum": 216312810.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2103.947377,
            "variance": 4426594.567
          },
          {
            "average": 0.4960581274,
            "count": 4635614,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999845153,
            "variance": 0.2499845156
          },
          {
            "average": 0,
            "count": 4635614,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4635614,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4635614,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1868498973,
            "count": 4635614,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3897910286,
            "variance": 0.151937046
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115881.2922,
          2250721.938,
          -27.26993252,
          116373.8322,
          2251198.438,
          1264.430067
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115881.29219148778,
                2250721.9378010216,
                -27.269932524238357
              ],
              [
                115881.29219148778,
                2251198.4378010216,
                -27.269932524238357
              ],
              [
                116373.83219148779,
                2251198.4378010216,
                1264.4300674757617
              ],
              [
                116373.83219148779,
                2250721.9378010216,
                1264.4300674757617
              ],
              [
                115881.29219148778,
                2250721.9378010216,
                -27.269932524238357
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:32+00:00",
        "end_time": "2018-07-22T16:40:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1159.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1159.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1159.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1159.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9880182,
            70.21198732,
            -27.26993252,
            -150.97467,
            70.21653601,
            1264.430067
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9880181989356,
                  70.2121915559532,
                  -27.269932524238357
                ],
                [
                  -150.9874567671705,
                  70.21653600923044,
                  -27.269932524238357
                ],
                [
                  -150.97466997136723,
                  70.2163317274626,
                  1264.4300674757617
                ],
                [
                  -150.97523377955838,
                  70.21198731710554,
                  1264.4300674757617
                ],
                [
                  -150.9880181989356,
                  70.2121915559532,
                  -27.269932524238357
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1159.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1159.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:32Z",
            "pc:count": 4635614,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116120.103,
                "count": 4635614,
                "maximum": 116373.8322,
                "minimum": 115881.2922,
                "name": "X",
                "position": 0,
                "stddev": 130.7361042,
                "variance": 17091.92894
              },
              {
                "average": 2250957.183,
                "count": 4635614,
                "maximum": 2251198.438,
                "minimum": 2250721.938,
                "name": "Y",
                "position": 1,
                "stddev": 127.7217913,
                "variance": 16312.85597
              },
              {
                "average": 7.177623983,
                "count": 4635614,
                "maximum": 1264.430067,
                "minimum": -27.26993252,
                "name": "Z",
                "position": 2,
                "stddev": 3.009012371,
                "variance": 9.05415545
              },
              {
                "average": 48068.08681,
                "count": 4635614,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10043.61396,
                "variance": 100874181.5
              },
              {
                "average": 1.000306971,
                "count": 4635614,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01788352059,
                "variance": 0.0003198203086
              },
              {
                "average": 1.000596038,
                "count": 4635614,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02508654864,
                "variance": 0.0006293349225
              },
              {
                "average": 0.4979480604,
                "count": 4635614,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958435,
                "variance": 0.2499958435
              },
              {
                "average": 0.0003757862497,
                "count": 4635614,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01938156638,
                "variance": 0.0003756451154
              },
              {
                "average": 1.205916412,
                "count": 4635614,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4416850415,
                "variance": 0.1950856759
              },
              {
                "average": 2.328342038,
                "count": 4635614,
                "maximum": 20.56200027,
                "minimum": -16.78199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.14813415,
                "variance": 102.9846266
              },
              {
                "average": 0.4960581274,
                "count": 4635614,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999845153,
                "variance": 0.2499845156
              },
              {
                "average": 319.7742165,
                "count": 4635614,
                "maximum": 359,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.42539782,
                "variance": 646.4508543
              },
              {
                "average": 216314613.6,
                "count": 4635614,
                "maximum": 216318112.3,
                "minimum": 216312810.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2103.947377,
                "variance": 4426594.567
              },
              {
                "average": 0.4960581274,
                "count": 4635614,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999845153,
                "variance": 0.2499845156
              },
              {
                "average": 0,
                "count": 4635614,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4635614,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4635614,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1868498973,
                "count": 4635614,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3897910286,
                "variance": 0.151937046
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115881.2922,
              2250721.938,
              -27.26993252,
              116373.8322,
              2251198.438,
              1264.430067
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115881.29219148778,
                    2250721.9378010216,
                    -27.269932524238357
                  ],
                  [
                    115881.29219148778,
                    2251198.4378010216,
                    -27.269932524238357
                  ],
                  [
                    116373.83219148779,
                    2251198.4378010216,
                    1264.4300674757617
                  ],
                  [
                    116373.83219148779,
                    2250721.9378010216,
                    1264.4300674757617
                  ],
                  [
                    115881.29219148778,
                    2250721.9378010216,
                    -27.269932524238357
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:32+00:00",
            "end_time": "2018-07-22T16:40:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1209.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.00030972022947,
              70.21622313368867,
              -7.247925217498015
            ],
            [
              -150.9997506926608,
              70.22056607847216,
              -7.247925217498015
            ],
            [
              -150.9869641759242,
              70.22036266483236,
              80.99207478250199
            ],
            [
              -150.98752557944007,
              70.21601976278133,
              80.99207478250199
            ],
            [
              -151.00030972022947,
              70.21622313368867,
              -7.247925217498015
            ]
          ]
        ]
      },
      "bbox": [
        -151.0003097,
        70.21601976,
        -7.247925217,
        -150.9869642,
        70.22056608,
        80.99207478
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:24Z",
        "pc:count": 4969002,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115642.6808,
            "count": 4969002,
            "maximum": 115881.2119,
            "minimum": 115388.7719,
            "name": "X",
            "position": 0,
            "stddev": 132.7425942,
            "variance": 17620.59631
          },
          {
            "average": 2251380.255,
            "count": 4969002,
            "maximum": 2251618.133,
            "minimum": 2251141.813,
            "name": "Y",
            "position": 1,
            "stddev": 125.7086461,
            "variance": 15802.66371
          },
          {
            "average": 10.77196393,
            "count": 4969002,
            "maximum": 80.99207478,
            "minimum": -7.247925217,
            "name": "Z",
            "position": 2,
            "stddev": 2.443010985,
            "variance": 5.968302674
          },
          {
            "average": 42558.47769,
            "count": 4969002,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15097.88426,
            "variance": 227946109
          },
          {
            "average": 1.011014888,
            "count": 4969002,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1065098924,
            "variance": 0.01134435717
          },
          {
            "average": 1.022044467,
            "count": 4969002,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1513727673,
            "variance": 0.02291371468
          },
          {
            "average": 0.4985264647,
            "count": 4969002,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997879,
            "variance": 0.249997879
          },
          {
            "average": 0.0003680819609,
            "count": 4969002,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01918193292,
            "variance": 0.0003679465506
          },
          {
            "average": 1.495447376,
            "count": 4969002,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.311456385,
            "variance": 1.719917849
          },
          {
            "average": 1.183810996,
            "count": 4969002,
            "maximum": 20.53199959,
            "minimum": -20.01600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.06636599,
            "variance": 122.4644562
          },
          {
            "average": 0.4733976762,
            "count": 4969002,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992918651,
            "variance": 0.2492923665
          },
          {
            "average": 320.6080933,
            "count": 4969002,
            "maximum": 358,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.49562195,
            "variance": 600.0354948
          },
          {
            "average": 216314767.1,
            "count": 4969002,
            "maximum": 216317864.6,
            "minimum": 216313250.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1867.898416,
            "variance": 3489044.492
          },
          {
            "average": 0.4733976762,
            "count": 4969002,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992918651,
            "variance": 0.2492923665
          },
          {
            "average": 0,
            "count": 4969002,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4969002,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4969002,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2009874417,
            "count": 4969002,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4007387208,
            "variance": 0.1605915223
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115388.7719,
          2251141.813,
          -7.247925217,
          115881.2119,
          2251618.133,
          80.99207478
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115388.77193834604,
                2251141.812790344,
                -7.247925217498015
              ],
              [
                115388.77193834604,
                2251618.1327903443,
                -7.247925217498015
              ],
              [
                115881.21193834604,
                2251618.1327903443,
                80.99207478250199
              ],
              [
                115881.21193834604,
                2251141.812790344,
                80.99207478250199
              ],
              [
                115388.77193834604,
                2251141.812790344,
                -7.247925217498015
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:24+00:00",
        "end_time": "2018-07-22T16:47:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1209.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1209.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1209.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1209.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0003097,
            70.21601976,
            -7.247925217,
            -150.9869642,
            70.22056608,
            80.99207478
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.00030972022947,
                  70.21622313368867,
                  -7.247925217498015
                ],
                [
                  -150.9997506926608,
                  70.22056607847216,
                  -7.247925217498015
                ],
                [
                  -150.9869641759242,
                  70.22036266483236,
                  80.99207478250199
                ],
                [
                  -150.98752557944007,
                  70.21601976278133,
                  80.99207478250199
                ],
                [
                  -151.00030972022947,
                  70.21622313368867,
                  -7.247925217498015
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1209.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1209.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:24Z",
            "pc:count": 4969002,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115642.6808,
                "count": 4969002,
                "maximum": 115881.2119,
                "minimum": 115388.7719,
                "name": "X",
                "position": 0,
                "stddev": 132.7425942,
                "variance": 17620.59631
              },
              {
                "average": 2251380.255,
                "count": 4969002,
                "maximum": 2251618.133,
                "minimum": 2251141.813,
                "name": "Y",
                "position": 1,
                "stddev": 125.7086461,
                "variance": 15802.66371
              },
              {
                "average": 10.77196393,
                "count": 4969002,
                "maximum": 80.99207478,
                "minimum": -7.247925217,
                "name": "Z",
                "position": 2,
                "stddev": 2.443010985,
                "variance": 5.968302674
              },
              {
                "average": 42558.47769,
                "count": 4969002,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15097.88426,
                "variance": 227946109
              },
              {
                "average": 1.011014888,
                "count": 4969002,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1065098924,
                "variance": 0.01134435717
              },
              {
                "average": 1.022044467,
                "count": 4969002,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1513727673,
                "variance": 0.02291371468
              },
              {
                "average": 0.4985264647,
                "count": 4969002,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997879,
                "variance": 0.249997879
              },
              {
                "average": 0.0003680819609,
                "count": 4969002,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01918193292,
                "variance": 0.0003679465506
              },
              {
                "average": 1.495447376,
                "count": 4969002,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.311456385,
                "variance": 1.719917849
              },
              {
                "average": 1.183810996,
                "count": 4969002,
                "maximum": 20.53199959,
                "minimum": -20.01600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.06636599,
                "variance": 122.4644562
              },
              {
                "average": 0.4733976762,
                "count": 4969002,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992918651,
                "variance": 0.2492923665
              },
              {
                "average": 320.6080933,
                "count": 4969002,
                "maximum": 358,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.49562195,
                "variance": 600.0354948
              },
              {
                "average": 216314767.1,
                "count": 4969002,
                "maximum": 216317864.6,
                "minimum": 216313250.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1867.898416,
                "variance": 3489044.492
              },
              {
                "average": 0.4733976762,
                "count": 4969002,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992918651,
                "variance": 0.2492923665
              },
              {
                "average": 0,
                "count": 4969002,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4969002,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4969002,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2009874417,
                "count": 4969002,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4007387208,
                "variance": 0.1605915223
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115388.7719,
              2251141.813,
              -7.247925217,
              115881.2119,
              2251618.133,
              80.99207478
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115388.77193834604,
                    2251141.812790344,
                    -7.247925217498015
                  ],
                  [
                    115388.77193834604,
                    2251618.1327903443,
                    -7.247925217498015
                  ],
                  [
                    115881.21193834604,
                    2251618.1327903443,
                    80.99207478250199
                  ],
                  [
                    115881.21193834604,
                    2251141.812790344,
                    80.99207478250199
                  ],
                  [
                    115388.77193834604,
                    2251141.812790344,
                    -7.247925217498015
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:24+00:00",
            "end_time": "2018-07-22T16:47:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1014.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.9874278929239,
              70.1998979665736,
              4.064644145395505
            ],
            [
              -150.9868666470459,
              70.20424212496799,
              4.064644145395505
            ],
            [
              -150.9740902255771,
              70.20403787551115,
              1278.1046441453955
            ],
            [
              -150.9746538446995,
              70.1996937599982,
              1278.1046441453955
            ],
            [
              -150.9874278929239,
              70.1998979665736,
              4.064644145395505
            ]
          ]
        ]
      },
      "bbox": [
        -150.9874279,
        70.19969376,
        4.064644145,
        -150.9740902,
        70.20424212,
        1278.104644
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:33Z",
        "pc:count": 4555801,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116202.3954,
            "count": 4555801,
            "maximum": 116457.4717,
            "minimum": 115965.0717,
            "name": "X",
            "position": 0,
            "stddev": 144.603275,
            "variance": 20910.10713
          },
          {
            "average": 2249622.512,
            "count": 4555801,
            "maximum": 2249853.817,
            "minimum": 2249377.317,
            "name": "Y",
            "position": 1,
            "stddev": 128.4490988,
            "variance": 16499.17099
          },
          {
            "average": 5.573993331,
            "count": 4555801,
            "maximum": 1278.104644,
            "minimum": 4.064644145,
            "name": "Z",
            "position": 2,
            "stddev": 3.773713556,
            "variance": 14.240914
          },
          {
            "average": 32575.21173,
            "count": 4555801,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 18609.676,
            "variance": 346320040.7
          },
          {
            "average": 1.000003073,
            "count": 4555801,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001752996405,
            "variance": 3.072996395e-06
          },
          {
            "average": 1.000006146,
            "count": 4555801,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002479107481,
            "variance": 6.145973904e-06
          },
          {
            "average": 0.5022897181,
            "count": 4555801,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499994812,
            "variance": 0.2499948121
          },
          {
            "average": 0.0004405372403,
            "count": 4555801,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0209843576,
            "variance": 0.0004403432639
          },
          {
            "average": 3.859071325,
            "count": 4555801,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.749593792,
            "variance": 14.0594536
          },
          {
            "average": -0.2059199215,
            "count": 4555801,
            "maximum": 20.43000031,
            "minimum": -19.91399956,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.218628195,
            "variance": 84.9831058
          },
          {
            "average": 0.5020728517,
            "count": 4555801,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999957581,
            "variance": 0.2499957582
          },
          {
            "average": 320.6275421,
            "count": 4555801,
            "maximum": 363,
            "minimum": 301,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 25.4204804,
            "variance": 646.2008238
          },
          {
            "average": 216315407.2,
            "count": 4555801,
            "maximum": 216321173.4,
            "minimum": 216312834.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2891.215751,
            "variance": 8359128.518
          },
          {
            "average": 0.5020728517,
            "count": 4555801,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999957581,
            "variance": 0.2499957582
          },
          {
            "average": 0,
            "count": 4555801,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4555801,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4555801,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1454440174,
            "count": 4555801,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3525479861,
            "variance": 0.1242900825
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115965.0717,
          2249377.317,
          4.064644145,
          116457.4717,
          2249853.817,
          1278.104644
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115965.07172312665,
                2249377.316976073,
                4.064644145395505
              ],
              [
                115965.07172312665,
                2249853.816976073,
                4.064644145395505
              ],
              [
                116457.47172312664,
                2249853.816976073,
                1278.1046441453955
              ],
              [
                116457.47172312664,
                2249377.316976073,
                1278.1046441453955
              ],
              [
                115965.07172312665,
                2249377.316976073,
                4.064644145395505
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:33+00:00",
        "end_time": "2018-07-22T16:40:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1014.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1014.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1014.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1014.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9874279,
            70.19969376,
            4.064644145,
            -150.9740902,
            70.20424212,
            1278.104644
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.9874278929239,
                  70.1998979665736,
                  4.064644145395505
                ],
                [
                  -150.9868666470459,
                  70.20424212496799,
                  4.064644145395505
                ],
                [
                  -150.9740902255771,
                  70.20403787551115,
                  1278.1046441453955
                ],
                [
                  -150.9746538446995,
                  70.1996937599982,
                  1278.1046441453955
                ],
                [
                  -150.9874278929239,
                  70.1998979665736,
                  4.064644145395505
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1014.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1014.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:33Z",
            "pc:count": 4555801,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116202.3954,
                "count": 4555801,
                "maximum": 116457.4717,
                "minimum": 115965.0717,
                "name": "X",
                "position": 0,
                "stddev": 144.603275,
                "variance": 20910.10713
              },
              {
                "average": 2249622.512,
                "count": 4555801,
                "maximum": 2249853.817,
                "minimum": 2249377.317,
                "name": "Y",
                "position": 1,
                "stddev": 128.4490988,
                "variance": 16499.17099
              },
              {
                "average": 5.573993331,
                "count": 4555801,
                "maximum": 1278.104644,
                "minimum": 4.064644145,
                "name": "Z",
                "position": 2,
                "stddev": 3.773713556,
                "variance": 14.240914
              },
              {
                "average": 32575.21173,
                "count": 4555801,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 18609.676,
                "variance": 346320040.7
              },
              {
                "average": 1.000003073,
                "count": 4555801,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001752996405,
                "variance": 3.072996395e-06
              },
              {
                "average": 1.000006146,
                "count": 4555801,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002479107481,
                "variance": 6.145973904e-06
              },
              {
                "average": 0.5022897181,
                "count": 4555801,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499994812,
                "variance": 0.2499948121
              },
              {
                "average": 0.0004405372403,
                "count": 4555801,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0209843576,
                "variance": 0.0004403432639
              },
              {
                "average": 3.859071325,
                "count": 4555801,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.749593792,
                "variance": 14.0594536
              },
              {
                "average": -0.2059199215,
                "count": 4555801,
                "maximum": 20.43000031,
                "minimum": -19.91399956,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.218628195,
                "variance": 84.9831058
              },
              {
                "average": 0.5020728517,
                "count": 4555801,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999957581,
                "variance": 0.2499957582
              },
              {
                "average": 320.6275421,
                "count": 4555801,
                "maximum": 363,
                "minimum": 301,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 25.4204804,
                "variance": 646.2008238
              },
              {
                "average": 216315407.2,
                "count": 4555801,
                "maximum": 216321173.4,
                "minimum": 216312834.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2891.215751,
                "variance": 8359128.518
              },
              {
                "average": 0.5020728517,
                "count": 4555801,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999957581,
                "variance": 0.2499957582
              },
              {
                "average": 0,
                "count": 4555801,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4555801,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4555801,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1454440174,
                "count": 4555801,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3525479861,
                "variance": 0.1242900825
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115965.0717,
              2249377.317,
              4.064644145,
              116457.4717,
              2249853.817,
              1278.104644
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115965.07172312665,
                    2249377.316976073,
                    4.064644145395505
                  ],
                  [
                    115965.07172312665,
                    2249853.816976073,
                    4.064644145395505
                  ],
                  [
                    116457.47172312664,
                    2249853.816976073,
                    1278.1046441453955
                  ],
                  [
                    116457.47172312664,
                    2249377.316976073,
                    1278.1046441453955
                  ],
                  [
                    115965.07172312665,
                    2249377.316976073,
                    4.064644145395505
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:33+00:00",
            "end_time": "2018-07-22T16:40:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1310.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01281241340115,
              70.22435095435704,
              -3.467188603918089
            ],
            [
              -151.01225537985871,
              70.22869522450212,
              -3.467188603918089
            ],
            [
              -150.9994606588638,
              70.22849258935221,
              621.732811396082
            ],
            [
              -151.00002007136675,
              70.22414836180813,
              621.732811396082
            ],
            [
              -151.01281241340115,
              70.22435095435704,
              -3.467188603918089
            ]
          ]
        ]
      },
      "bbox": [
        -151.0128124,
        70.22414836,
        -3.467188604,
        -150.9994607,
        70.22869522,
        621.7328114
      ],
      "properties": {
        "datetime": "2018-07-22T17:53:05Z",
        "pc:count": 4432652,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115116.848,
            "count": 4432652,
            "maximum": 115360.6952,
            "minimum": 114868.1152,
            "name": "X",
            "position": 0,
            "stddev": 135.1894893,
            "variance": 18276.19802
          },
          {
            "average": 2252240.62,
            "count": 4432652,
            "maximum": 2252486.188,
            "minimum": 2252009.748,
            "name": "Y",
            "position": 1,
            "stddev": 127.553488,
            "variance": 16269.89229
          },
          {
            "average": 11.35560798,
            "count": 4432652,
            "maximum": 621.7328114,
            "minimum": -3.467188604,
            "name": "Z",
            "position": 2,
            "stddev": 2.352477968,
            "variance": 5.534152588
          },
          {
            "average": 44816.72835,
            "count": 4432652,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11461.10843,
            "variance": 131357006.4
          },
          {
            "average": 1.004361949,
            "count": 4432652,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06681875638,
            "variance": 0.004464746204
          },
          {
            "average": 1.008726604,
            "count": 4432652,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0949522112,
            "variance": 0.009015922411
          },
          {
            "average": 0.5068994814,
            "count": 4432652,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999524513,
            "variance": 0.2499524535
          },
          {
            "average": 0.0003614089263,
            "count": 4432652,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01900732468,
            "variance": 0.0003612783914
          },
          {
            "average": 1.255904817,
            "count": 4432652,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7151304078,
            "variance": 0.5114115001
          },
          {
            "average": -1.969498658,
            "count": 4432652,
            "maximum": 16.5,
            "minimum": -19.91399956,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83074985,
            "variance": 117.3051422
          },
          {
            "average": 0.5294094822,
            "count": 4432652,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991343893,
            "variance": 0.2491351386
          },
          {
            "average": 316.1680714,
            "count": 4432652,
            "maximum": 356,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.45700707,
            "variance": 418.4891381
          },
          {
            "average": 216314483,
            "count": 4432652,
            "maximum": 216317185.1,
            "minimum": 216313497.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1290.860524,
            "variance": 1666320.892
          },
          {
            "average": 0.5294094822,
            "count": 4432652,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991343893,
            "variance": 0.2491351386
          },
          {
            "average": 0,
            "count": 4432652,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4432652,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4432652,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1987153514,
            "count": 4432652,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3990333275,
            "variance": 0.1592275965
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114868.1152,
          2252009.748,
          -3.467188604,
          115360.6952,
          2252486.188,
          621.7328114
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114868.1151533319,
                2252009.7481706073,
                -3.467188603918089
              ],
              [
                114868.1151533319,
                2252486.1881706077,
                -3.467188603918089
              ],
              [
                115360.6951533319,
                2252486.1881706077,
                621.732811396082
              ],
              [
                115360.6951533319,
                2252009.7481706073,
                621.732811396082
              ],
              [
                114868.1151533319,
                2252009.7481706073,
                -3.467188603918089
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:53:05+00:00",
        "end_time": "2018-07-22T16:51:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1310.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1310.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1310.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1310.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0128124,
            70.22414836,
            -3.467188604,
            -150.9994607,
            70.22869522,
            621.7328114
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01281241340115,
                  70.22435095435704,
                  -3.467188603918089
                ],
                [
                  -151.01225537985871,
                  70.22869522450212,
                  -3.467188603918089
                ],
                [
                  -150.9994606588638,
                  70.22849258935221,
                  621.732811396082
                ],
                [
                  -151.00002007136675,
                  70.22414836180813,
                  621.732811396082
                ],
                [
                  -151.01281241340115,
                  70.22435095435704,
                  -3.467188603918089
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1310.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1310.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:53:05Z",
            "pc:count": 4432652,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115116.848,
                "count": 4432652,
                "maximum": 115360.6952,
                "minimum": 114868.1152,
                "name": "X",
                "position": 0,
                "stddev": 135.1894893,
                "variance": 18276.19802
              },
              {
                "average": 2252240.62,
                "count": 4432652,
                "maximum": 2252486.188,
                "minimum": 2252009.748,
                "name": "Y",
                "position": 1,
                "stddev": 127.553488,
                "variance": 16269.89229
              },
              {
                "average": 11.35560798,
                "count": 4432652,
                "maximum": 621.7328114,
                "minimum": -3.467188604,
                "name": "Z",
                "position": 2,
                "stddev": 2.352477968,
                "variance": 5.534152588
              },
              {
                "average": 44816.72835,
                "count": 4432652,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11461.10843,
                "variance": 131357006.4
              },
              {
                "average": 1.004361949,
                "count": 4432652,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06681875638,
                "variance": 0.004464746204
              },
              {
                "average": 1.008726604,
                "count": 4432652,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0949522112,
                "variance": 0.009015922411
              },
              {
                "average": 0.5068994814,
                "count": 4432652,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999524513,
                "variance": 0.2499524535
              },
              {
                "average": 0.0003614089263,
                "count": 4432652,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01900732468,
                "variance": 0.0003612783914
              },
              {
                "average": 1.255904817,
                "count": 4432652,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7151304078,
                "variance": 0.5114115001
              },
              {
                "average": -1.969498658,
                "count": 4432652,
                "maximum": 16.5,
                "minimum": -19.91399956,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83074985,
                "variance": 117.3051422
              },
              {
                "average": 0.5294094822,
                "count": 4432652,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991343893,
                "variance": 0.2491351386
              },
              {
                "average": 316.1680714,
                "count": 4432652,
                "maximum": 356,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.45700707,
                "variance": 418.4891381
              },
              {
                "average": 216314483,
                "count": 4432652,
                "maximum": 216317185.1,
                "minimum": 216313497.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1290.860524,
                "variance": 1666320.892
              },
              {
                "average": 0.5294094822,
                "count": 4432652,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991343893,
                "variance": 0.2491351386
              },
              {
                "average": 0,
                "count": 4432652,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4432652,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4432652,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1987153514,
                "count": 4432652,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3990333275,
                "variance": 0.1592275965
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114868.1152,
              2252009.748,
              -3.467188604,
              115360.6952,
              2252486.188,
              621.7328114
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114868.1151533319,
                    2252009.7481706073,
                    -3.467188603918089
                  ],
                  [
                    114868.1151533319,
                    2252486.1881706077,
                    -3.467188603918089
                  ],
                  [
                    115360.6951533319,
                    2252486.1881706077,
                    621.732811396082
                  ],
                  [
                    115360.6951533319,
                    2252009.7481706073,
                    621.732811396082
                  ],
                  [
                    114868.1151533319,
                    2252009.7481706073,
                    -3.467188603918089
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:53:05+00:00",
            "end_time": "2018-07-22T16:51:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1056.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.99971508017745,
              70.20392884693186,
              6.755789847957848
            ],
            [
              -150.99915600181097,
              70.20827332012246,
              6.755789847957848
            ],
            [
              -150.98637778419968,
              70.20806990508723,
              29.375789847957847
            ],
            [
              -150.98693923671385,
              70.20372547461548,
              29.375789847957847
            ],
            [
              -150.99971508017745,
              70.20392884693186,
              6.755789847957848
            ]
          ]
        ]
      },
      "bbox": [
        -150.9997151,
        70.20372547,
        6.755789848,
        -150.9863778,
        70.20827332,
        29.37578985
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:13Z",
        "pc:count": 5627019,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115722.3427,
            "count": 5627019,
            "maximum": 115964.8475,
            "minimum": 115472.4675,
            "name": "X",
            "position": 0,
            "stddev": 132.676867,
            "variance": 17603.15102
          },
          {
            "average": 2250032.444,
            "count": 5627019,
            "maximum": 2250273.657,
            "minimum": 2249797.137,
            "name": "Y",
            "position": 1,
            "stddev": 124.6404153,
            "variance": 15535.23312
          },
          {
            "average": 10.23480396,
            "count": 5627019,
            "maximum": 29.37578985,
            "minimum": 6.755789848,
            "name": "Z",
            "position": 2,
            "stddev": 0.7613207714,
            "variance": 0.579609317
          },
          {
            "average": 49268.47092,
            "count": 5627019,
            "maximum": 65535,
            "minimum": 1547,
            "name": "Intensity",
            "position": 3,
            "stddev": 9364.037891,
            "variance": 87685205.63
          },
          {
            "average": 1.000009419,
            "count": 5627019,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003068998932,
            "variance": 9.418754445e-06
          },
          {
            "average": 1.000018838,
            "count": 5627019,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004340199473,
            "variance": 1.883733146e-05
          },
          {
            "average": 0.4997610635,
            "count": 5627019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999873,
            "variance": 0.2499999873
          },
          {
            "average": 0.000420649015,
            "count": 5627019,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02050541743,
            "variance": 0.0004204721442
          },
          {
            "average": 1.151528722,
            "count": 5627019,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3594204188,
            "variance": 0.1291830375
          },
          {
            "average": 0.8970829238,
            "count": 5627019,
            "maximum": 20.45400047,
            "minimum": -19.96199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.44265265,
            "variance": 130.9342998
          },
          {
            "average": 0.4833349594,
            "count": 5627019,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997222437,
            "variance": 0.2497223208
          },
          {
            "average": 320.5924281,
            "count": 5627019,
            "maximum": 361,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.52310742,
            "variance": 601.3827977
          },
          {
            "average": 216315253.1,
            "count": 5627019,
            "maximum": 216320253.9,
            "minimum": 216313274.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2420.36432,
            "variance": 5858163.441
          },
          {
            "average": 0.4833349594,
            "count": 5627019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997222437,
            "variance": 0.2497223208
          },
          {
            "average": 0,
            "count": 5627019,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5627019,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5627019,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2326565807,
            "count": 5627019,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4225251802,
            "variance": 0.1785275279
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115472.4675,
          2249797.137,
          6.755789848,
          115964.8475,
          2250273.657,
          29.37578985
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115472.46747682846,
                2249797.1372795333,
                6.755789847957848
              ],
              [
                115472.46747682846,
                2250273.657279533,
                6.755789847957848
              ],
              [
                115964.84747682847,
                2250273.657279533,
                29.375789847957847
              ],
              [
                115964.84747682847,
                2249797.1372795333,
                29.375789847957847
              ],
              [
                115472.46747682846,
                2249797.1372795333,
                6.755789847957848
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:13+00:00",
        "end_time": "2018-07-22T16:47:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1056.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1056.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1056.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1056.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9997151,
            70.20372547,
            6.755789848,
            -150.9863778,
            70.20827332,
            29.37578985
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.99971508017745,
                  70.20392884693186,
                  6.755789847957848
                ],
                [
                  -150.99915600181097,
                  70.20827332012246,
                  6.755789847957848
                ],
                [
                  -150.98637778419968,
                  70.20806990508723,
                  29.375789847957847
                ],
                [
                  -150.98693923671385,
                  70.20372547461548,
                  29.375789847957847
                ],
                [
                  -150.99971508017745,
                  70.20392884693186,
                  6.755789847957848
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1056.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1056.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:13Z",
            "pc:count": 5627019,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115722.3427,
                "count": 5627019,
                "maximum": 115964.8475,
                "minimum": 115472.4675,
                "name": "X",
                "position": 0,
                "stddev": 132.676867,
                "variance": 17603.15102
              },
              {
                "average": 2250032.444,
                "count": 5627019,
                "maximum": 2250273.657,
                "minimum": 2249797.137,
                "name": "Y",
                "position": 1,
                "stddev": 124.6404153,
                "variance": 15535.23312
              },
              {
                "average": 10.23480396,
                "count": 5627019,
                "maximum": 29.37578985,
                "minimum": 6.755789848,
                "name": "Z",
                "position": 2,
                "stddev": 0.7613207714,
                "variance": 0.579609317
              },
              {
                "average": 49268.47092,
                "count": 5627019,
                "maximum": 65535,
                "minimum": 1547,
                "name": "Intensity",
                "position": 3,
                "stddev": 9364.037891,
                "variance": 87685205.63
              },
              {
                "average": 1.000009419,
                "count": 5627019,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003068998932,
                "variance": 9.418754445e-06
              },
              {
                "average": 1.000018838,
                "count": 5627019,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004340199473,
                "variance": 1.883733146e-05
              },
              {
                "average": 0.4997610635,
                "count": 5627019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999873,
                "variance": 0.2499999873
              },
              {
                "average": 0.000420649015,
                "count": 5627019,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02050541743,
                "variance": 0.0004204721442
              },
              {
                "average": 1.151528722,
                "count": 5627019,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3594204188,
                "variance": 0.1291830375
              },
              {
                "average": 0.8970829238,
                "count": 5627019,
                "maximum": 20.45400047,
                "minimum": -19.96199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.44265265,
                "variance": 130.9342998
              },
              {
                "average": 0.4833349594,
                "count": 5627019,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997222437,
                "variance": 0.2497223208
              },
              {
                "average": 320.5924281,
                "count": 5627019,
                "maximum": 361,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.52310742,
                "variance": 601.3827977
              },
              {
                "average": 216315253.1,
                "count": 5627019,
                "maximum": 216320253.9,
                "minimum": 216313274.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2420.36432,
                "variance": 5858163.441
              },
              {
                "average": 0.4833349594,
                "count": 5627019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997222437,
                "variance": 0.2497223208
              },
              {
                "average": 0,
                "count": 5627019,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5627019,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5627019,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2326565807,
                "count": 5627019,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4225251802,
                "variance": 0.1785275279
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115472.4675,
              2249797.137,
              6.755789848,
              115964.8475,
              2250273.657,
              29.37578985
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115472.46747682846,
                    2249797.1372795333,
                    6.755789847957848
                  ],
                  [
                    115472.46747682846,
                    2250273.657279533,
                    6.755789847957848
                  ],
                  [
                    115964.84747682847,
                    2250273.657279533,
                    29.375789847957847
                  ],
                  [
                    115964.84747682847,
                    2249797.1372795333,
                    29.375789847957847
                  ],
                  [
                    115472.46747682846,
                    2249797.1372795333,
                    6.755789847957848
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:13+00:00",
            "end_time": "2018-07-22T16:47:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1360.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.02511733776612,
              70.22837969215132,
              9.494675472247081
            ],
            [
              -151.02456247805753,
              70.23272427727156,
              9.494675472247081
            ],
            [
              -151.01176647765223,
              70.23252248633273,
              593.6746754722471
            ],
            [
              -151.01232371713004,
              70.22817794364848,
              593.6746754722471
            ],
            [
              -151.02511733776612,
              70.22837969215132,
              9.494675472247081
            ]
          ]
        ]
      },
      "bbox": [
        -151.0251173,
        70.22817794,
        9.494675472,
        -151.0117665,
        70.23272428,
        593.6746755
      ],
      "properties": {
        "datetime": "2018-07-22T17:45:55Z",
        "pc:count": 4262140,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114616.9364,
            "count": 4262140,
            "maximum": 114868.0383,
            "minimum": 114375.4983,
            "name": "X",
            "position": 0,
            "stddev": 136.8312873,
            "variance": 18722.80119
          },
          {
            "average": 2252663.53,
            "count": 4262140,
            "maximum": 2252905.915,
            "minimum": 2252429.455,
            "name": "Y",
            "position": 1,
            "stddev": 130.4307597,
            "variance": 17012.18309
          },
          {
            "average": 11.75451187,
            "count": 4262140,
            "maximum": 593.6746755,
            "minimum": 9.494675472,
            "name": "Z",
            "position": 2,
            "stddev": 1.952076462,
            "variance": 3.810602512
          },
          {
            "average": 47855.50645,
            "count": 4262140,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 10135.40464,
            "variance": 102726427.2
          },
          {
            "average": 1.000002346,
            "count": 4262140,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00153174223,
            "variance": 2.346234259e-06
          },
          {
            "average": 1.000004692,
            "count": 4262140,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002166208094,
            "variance": 4.692457508e-06
          },
          {
            "average": 0.4955444917,
            "count": 4262140,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999802067,
            "variance": 0.2499802071
          },
          {
            "average": 0.0004856715171,
            "count": 4262140,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02203260661,
            "variance": 0.0004854357542
          },
          {
            "average": 1.168184996,
            "count": 4262140,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.378142987,
            "variance": 0.1429921186
          },
          {
            "average": 2.895677706,
            "count": 4262140,
            "maximum": 20.53800011,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.22254746,
            "variance": 125.9455714
          },
          {
            "average": 0.4747368693,
            "count": 4262140,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499361425,
            "variance": 0.2493618327
          },
          {
            "average": 319.2672315,
            "count": 4262140,
            "maximum": 355,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.06107391,
            "variance": 443.5688342
          },
          {
            "average": 216314757.4,
            "count": 4262140,
            "maximum": 216316755,
            "minimum": 216313671.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1144.479154,
            "variance": 1309832.534
          },
          {
            "average": 0.4747368693,
            "count": 4262140,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499361425,
            "variance": 0.2493618327
          },
          {
            "average": 0,
            "count": 4262140,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4262140,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4262140,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2531615573,
            "count": 4262140,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4348227542,
            "variance": 0.1890708276
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114375.4983,
          2252429.455,
          9.494675472,
          114868.0383,
          2252905.915,
          593.6746755
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114375.49831126268,
                2252429.454645082,
                9.494675472247081
              ],
              [
                114375.49831126268,
                2252905.914645082,
                9.494675472247081
              ],
              [
                114868.03831126269,
                2252905.914645082,
                593.6746754722471
              ],
              [
                114868.03831126269,
                2252429.454645082,
                593.6746754722471
              ],
              [
                114375.49831126268,
                2252429.454645082,
                9.494675472247081
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:45:55+00:00",
        "end_time": "2018-07-22T16:54:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1360.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1360.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1360.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1360.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0251173,
            70.22817794,
            9.494675472,
            -151.0117665,
            70.23272428,
            593.6746755
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.02511733776612,
                  70.22837969215132,
                  9.494675472247081
                ],
                [
                  -151.02456247805753,
                  70.23272427727156,
                  9.494675472247081
                ],
                [
                  -151.01176647765223,
                  70.23252248633273,
                  593.6746754722471
                ],
                [
                  -151.01232371713004,
                  70.22817794364848,
                  593.6746754722471
                ],
                [
                  -151.02511733776612,
                  70.22837969215132,
                  9.494675472247081
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1360.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1360.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:45:55Z",
            "pc:count": 4262140,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114616.9364,
                "count": 4262140,
                "maximum": 114868.0383,
                "minimum": 114375.4983,
                "name": "X",
                "position": 0,
                "stddev": 136.8312873,
                "variance": 18722.80119
              },
              {
                "average": 2252663.53,
                "count": 4262140,
                "maximum": 2252905.915,
                "minimum": 2252429.455,
                "name": "Y",
                "position": 1,
                "stddev": 130.4307597,
                "variance": 17012.18309
              },
              {
                "average": 11.75451187,
                "count": 4262140,
                "maximum": 593.6746755,
                "minimum": 9.494675472,
                "name": "Z",
                "position": 2,
                "stddev": 1.952076462,
                "variance": 3.810602512
              },
              {
                "average": 47855.50645,
                "count": 4262140,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 10135.40464,
                "variance": 102726427.2
              },
              {
                "average": 1.000002346,
                "count": 4262140,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00153174223,
                "variance": 2.346234259e-06
              },
              {
                "average": 1.000004692,
                "count": 4262140,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002166208094,
                "variance": 4.692457508e-06
              },
              {
                "average": 0.4955444917,
                "count": 4262140,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999802067,
                "variance": 0.2499802071
              },
              {
                "average": 0.0004856715171,
                "count": 4262140,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02203260661,
                "variance": 0.0004854357542
              },
              {
                "average": 1.168184996,
                "count": 4262140,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.378142987,
                "variance": 0.1429921186
              },
              {
                "average": 2.895677706,
                "count": 4262140,
                "maximum": 20.53800011,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.22254746,
                "variance": 125.9455714
              },
              {
                "average": 0.4747368693,
                "count": 4262140,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499361425,
                "variance": 0.2493618327
              },
              {
                "average": 319.2672315,
                "count": 4262140,
                "maximum": 355,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.06107391,
                "variance": 443.5688342
              },
              {
                "average": 216314757.4,
                "count": 4262140,
                "maximum": 216316755,
                "minimum": 216313671.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1144.479154,
                "variance": 1309832.534
              },
              {
                "average": 0.4747368693,
                "count": 4262140,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499361425,
                "variance": 0.2493618327
              },
              {
                "average": 0,
                "count": 4262140,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4262140,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4262140,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2531615573,
                "count": 4262140,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4348227542,
                "variance": 0.1890708276
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114375.4983,
              2252429.455,
              9.494675472,
              114868.0383,
              2252905.915,
              593.6746755
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114375.49831126268,
                    2252429.454645082,
                    9.494675472247081
                  ],
                  [
                    114375.49831126268,
                    2252905.914645082,
                    9.494675472247081
                  ],
                  [
                    114868.03831126269,
                    2252905.914645082,
                    593.6746754722471
                  ],
                  [
                    114868.03831126269,
                    2252429.454645082,
                    593.6746754722471
                  ],
                  [
                    114375.49831126268,
                    2252429.454645082,
                    9.494675472247081
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:45:55+00:00",
            "end_time": "2018-07-22T16:54:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1262.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97630950198234,
              70.22045384127146,
              2.07340232631452
            ],
            [
              -150.9757458551835,
              70.2247971806176,
              2.07340232631452
            ],
            [
              -150.96295619004593,
              70.22459212252427,
              7.51340232631452
            ],
            [
              -150.96352221389012,
              70.22024882627,
              7.51340232631452
            ],
            [
              -150.97630950198234,
              70.22045384127146,
              2.07340232631452
            ]
          ]
        ]
      },
      "bbox": [
        -150.9763095,
        70.22024883,
        2.073402326,
        -150.9629562,
        70.22479718,
        7.513402326
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:07Z",
        "pc:count": 3764257,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116519.3339,
            "count": 3764257,
            "maximum": 116782.7328,
            "minimum": 116290.2528,
            "name": "X",
            "position": 0,
            "stddev": 131.3765676,
            "variance": 17259.80251
          },
          {
            "average": 2251901.454,
            "count": 3764257,
            "maximum": 2252123.096,
            "minimum": 2251646.736,
            "name": "Y",
            "position": 1,
            "stddev": 125.7254094,
            "variance": 15806.87856
          },
          {
            "average": 5.75519574,
            "count": 3764257,
            "maximum": 7.513402326,
            "minimum": 2.073402326,
            "name": "Z",
            "position": 2,
            "stddev": 1.464682099,
            "variance": 2.14529365
          },
          {
            "average": 38079.48103,
            "count": 3764257,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 15905.2449,
            "variance": 252976815.3
          },
          {
            "average": 1.000047818,
            "count": 3764257,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006914906196,
            "variance": 4.78159277e-05
          },
          {
            "average": 1.000095636,
            "count": 3764257,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0097789203,
            "variance": 9.562728223e-05
          },
          {
            "average": 0.5037023243,
            "count": 3764257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499986359,
            "variance": 0.2499863592
          },
          {
            "average": 0.0003607617652,
            "count": 3764257,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01899030574,
            "variance": 0.000360631712
          },
          {
            "average": 2.18572988,
            "count": 3764257,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.644736322,
            "variance": 6.994630211
          },
          {
            "average": -1.065784577,
            "count": 3764257,
            "maximum": 20.05200005,
            "minimum": -20.25,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.37821676,
            "variance": 107.7073831
          },
          {
            "average": 0.5258424172,
            "count": 3764257,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993317892,
            "variance": 0.2493322357
          },
          {
            "average": 312.6711431,
            "count": 3764257,
            "maximum": 358,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.80786418,
            "variance": 475.58294
          },
          {
            "average": 216313796.7,
            "count": 3764257,
            "maximum": 216317847.3,
            "minimum": 216312595.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1675.583038,
            "variance": 2807578.516
          },
          {
            "average": 0.5258424172,
            "count": 3764257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993317892,
            "variance": 0.2493322357
          },
          {
            "average": 0,
            "count": 3764257,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3764257,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3764257,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2097760594,
            "count": 3764257,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4071487546,
            "variance": 0.1657701083
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116290.2528,
          2251646.736,
          2.073402326,
          116782.7328,
          2252123.096,
          7.513402326
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116290.25281975219,
                2251646.73634003,
                2.07340232631452
              ],
              [
                116290.25281975219,
                2252123.0963400304,
                2.07340232631452
              ],
              [
                116782.7328197522,
                2252123.0963400304,
                7.51340232631452
              ],
              [
                116782.7328197522,
                2251646.73634003,
                7.51340232631452
              ],
              [
                116290.25281975219,
                2251646.73634003,
                2.07340232631452
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:07+00:00",
        "end_time": "2018-07-22T16:36:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1262.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1262.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1262.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1262.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9763095,
            70.22024883,
            2.073402326,
            -150.9629562,
            70.22479718,
            7.513402326
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97630950198234,
                  70.22045384127146,
                  2.07340232631452
                ],
                [
                  -150.9757458551835,
                  70.2247971806176,
                  2.07340232631452
                ],
                [
                  -150.96295619004593,
                  70.22459212252427,
                  7.51340232631452
                ],
                [
                  -150.96352221389012,
                  70.22024882627,
                  7.51340232631452
                ],
                [
                  -150.97630950198234,
                  70.22045384127146,
                  2.07340232631452
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1262.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1262.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:07Z",
            "pc:count": 3764257,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116519.3339,
                "count": 3764257,
                "maximum": 116782.7328,
                "minimum": 116290.2528,
                "name": "X",
                "position": 0,
                "stddev": 131.3765676,
                "variance": 17259.80251
              },
              {
                "average": 2251901.454,
                "count": 3764257,
                "maximum": 2252123.096,
                "minimum": 2251646.736,
                "name": "Y",
                "position": 1,
                "stddev": 125.7254094,
                "variance": 15806.87856
              },
              {
                "average": 5.75519574,
                "count": 3764257,
                "maximum": 7.513402326,
                "minimum": 2.073402326,
                "name": "Z",
                "position": 2,
                "stddev": 1.464682099,
                "variance": 2.14529365
              },
              {
                "average": 38079.48103,
                "count": 3764257,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 15905.2449,
                "variance": 252976815.3
              },
              {
                "average": 1.000047818,
                "count": 3764257,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006914906196,
                "variance": 4.78159277e-05
              },
              {
                "average": 1.000095636,
                "count": 3764257,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0097789203,
                "variance": 9.562728223e-05
              },
              {
                "average": 0.5037023243,
                "count": 3764257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499986359,
                "variance": 0.2499863592
              },
              {
                "average": 0.0003607617652,
                "count": 3764257,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01899030574,
                "variance": 0.000360631712
              },
              {
                "average": 2.18572988,
                "count": 3764257,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.644736322,
                "variance": 6.994630211
              },
              {
                "average": -1.065784577,
                "count": 3764257,
                "maximum": 20.05200005,
                "minimum": -20.25,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.37821676,
                "variance": 107.7073831
              },
              {
                "average": 0.5258424172,
                "count": 3764257,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993317892,
                "variance": 0.2493322357
              },
              {
                "average": 312.6711431,
                "count": 3764257,
                "maximum": 358,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.80786418,
                "variance": 475.58294
              },
              {
                "average": 216313796.7,
                "count": 3764257,
                "maximum": 216317847.3,
                "minimum": 216312595.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1675.583038,
                "variance": 2807578.516
              },
              {
                "average": 0.5258424172,
                "count": 3764257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993317892,
                "variance": 0.2493322357
              },
              {
                "average": 0,
                "count": 3764257,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3764257,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3764257,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2097760594,
                "count": 3764257,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4071487546,
                "variance": 0.1657701083
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116290.2528,
              2251646.736,
              2.073402326,
              116782.7328,
              2252123.096,
              7.513402326
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116290.25281975219,
                    2251646.73634003,
                    2.07340232631452
                  ],
                  [
                    116290.25281975219,
                    2252123.0963400304,
                    2.07340232631452
                  ],
                  [
                    116782.7328197522,
                    2252123.0963400304,
                    7.51340232631452
                  ],
                  [
                    116782.7328197522,
                    2251646.73634003,
                    7.51340232631452
                  ],
                  [
                    116290.25281975219,
                    2251646.73634003,
                    2.07340232631452
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:07+00:00",
            "end_time": "2018-07-22T16:36:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0970.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.99931921569248,
              70.19573430192094,
              4.154967115869056
            ],
            [
              -150.9987603772651,
              70.20007766710239,
              4.154967115869056
            ],
            [
              -150.98598405609175,
              70.19987419321632,
              584.9349671158691
            ],
            [
              -150.98654526698124,
              70.1955308707359,
              584.9349671158691
            ],
            [
              -150.99931921569248,
              70.19573430192094,
              4.154967115869056
            ]
          ]
        ]
      },
      "bbox": [
        -150.9993192,
        70.19553087,
        4.154967116,
        -150.9859841,
        70.20007767,
        584.9349671
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:21Z",
        "pc:count": 4929488,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115767.0362,
            "count": 4929488,
            "maximum": 116020.7304,
            "minimum": 115528.2504,
            "name": "X",
            "position": 0,
            "stddev": 133.6330186,
            "variance": 17857.78365
          },
          {
            "average": 2249169.355,
            "count": 4929488,
            "maximum": 2249377.236,
            "minimum": 2248900.816,
            "name": "Y",
            "position": 1,
            "stddev": 128.3821843,
            "variance": 16481.98525
          },
          {
            "average": 9.903399777,
            "count": 4929488,
            "maximum": 584.9349671,
            "minimum": 4.154967116,
            "name": "Z",
            "position": 2,
            "stddev": 3.608043272,
            "variance": 13.01797625
          },
          {
            "average": 44903.73678,
            "count": 4929488,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16421.56419,
            "variance": 269667770.4
          },
          {
            "average": 1.000033472,
            "count": 4929488,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005785405989,
            "variance": 3.347092245e-05
          },
          {
            "average": 1.000066944,
            "count": 4929488,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.008181662677,
            "variance": 6.693960415e-05
          },
          {
            "average": 0.5030504182,
            "count": 4929488,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999907456,
            "variance": 0.2499907457
          },
          {
            "average": 0.0004653627314,
            "count": 4929488,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02156724978,
            "variance": 0.0004651462633
          },
          {
            "average": 1.948438256,
            "count": 4929488,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.421712216,
            "variance": 5.864690057
          },
          {
            "average": -1.599557908,
            "count": 4929488,
            "maximum": 20.44799995,
            "minimum": -19.93199921,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.23341244,
            "variance": 104.7227302
          },
          {
            "average": 0.4650945494,
            "count": 4929488,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498780172,
            "variance": 0.24878166
          },
          {
            "average": 323.6119009,
            "count": 4929488,
            "maximum": 364,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.69226522,
            "variance": 712.4770224
          },
          {
            "average": 216315955.6,
            "count": 4929488,
            "maximum": 216321521.5,
            "minimum": 216313290.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3248.861348,
            "variance": 10555100.06
          },
          {
            "average": 0.4650945494,
            "count": 4929488,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498780172,
            "variance": 0.24878166
          },
          {
            "average": 0,
            "count": 4929488,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4929488,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4929488,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.21025003,
            "count": 4929488,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4074861821,
            "variance": 0.1660449886
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115528.2504,
          2248900.816,
          4.154967116,
          116020.7304,
          2249377.236,
          584.9349671
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115528.25038668654,
                2248900.816459448,
                4.154967115869056
              ],
              [
                115528.25038668654,
                2249377.236459448,
                4.154967115869056
              ],
              [
                116020.73038668655,
                2249377.236459448,
                584.9349671158691
              ],
              [
                116020.73038668655,
                2248900.816459448,
                584.9349671158691
              ],
              [
                115528.25038668654,
                2248900.816459448,
                4.154967115869056
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:21+00:00",
        "end_time": "2018-07-22T16:48:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0970.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0970.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0970.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0970.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9993192,
            70.19553087,
            4.154967116,
            -150.9859841,
            70.20007767,
            584.9349671
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.99931921569248,
                  70.19573430192094,
                  4.154967115869056
                ],
                [
                  -150.9987603772651,
                  70.20007766710239,
                  4.154967115869056
                ],
                [
                  -150.98598405609175,
                  70.19987419321632,
                  584.9349671158691
                ],
                [
                  -150.98654526698124,
                  70.1955308707359,
                  584.9349671158691
                ],
                [
                  -150.99931921569248,
                  70.19573430192094,
                  4.154967115869056
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0970.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0970.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:21Z",
            "pc:count": 4929488,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115767.0362,
                "count": 4929488,
                "maximum": 116020.7304,
                "minimum": 115528.2504,
                "name": "X",
                "position": 0,
                "stddev": 133.6330186,
                "variance": 17857.78365
              },
              {
                "average": 2249169.355,
                "count": 4929488,
                "maximum": 2249377.236,
                "minimum": 2248900.816,
                "name": "Y",
                "position": 1,
                "stddev": 128.3821843,
                "variance": 16481.98525
              },
              {
                "average": 9.903399777,
                "count": 4929488,
                "maximum": 584.9349671,
                "minimum": 4.154967116,
                "name": "Z",
                "position": 2,
                "stddev": 3.608043272,
                "variance": 13.01797625
              },
              {
                "average": 44903.73678,
                "count": 4929488,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16421.56419,
                "variance": 269667770.4
              },
              {
                "average": 1.000033472,
                "count": 4929488,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005785405989,
                "variance": 3.347092245e-05
              },
              {
                "average": 1.000066944,
                "count": 4929488,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.008181662677,
                "variance": 6.693960415e-05
              },
              {
                "average": 0.5030504182,
                "count": 4929488,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999907456,
                "variance": 0.2499907457
              },
              {
                "average": 0.0004653627314,
                "count": 4929488,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02156724978,
                "variance": 0.0004651462633
              },
              {
                "average": 1.948438256,
                "count": 4929488,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.421712216,
                "variance": 5.864690057
              },
              {
                "average": -1.599557908,
                "count": 4929488,
                "maximum": 20.44799995,
                "minimum": -19.93199921,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.23341244,
                "variance": 104.7227302
              },
              {
                "average": 0.4650945494,
                "count": 4929488,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498780172,
                "variance": 0.24878166
              },
              {
                "average": 323.6119009,
                "count": 4929488,
                "maximum": 364,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.69226522,
                "variance": 712.4770224
              },
              {
                "average": 216315955.6,
                "count": 4929488,
                "maximum": 216321521.5,
                "minimum": 216313290.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3248.861348,
                "variance": 10555100.06
              },
              {
                "average": 0.4650945494,
                "count": 4929488,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498780172,
                "variance": 0.24878166
              },
              {
                "average": 0,
                "count": 4929488,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4929488,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4929488,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.21025003,
                "count": 4929488,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4074861821,
                "variance": 0.1660449886
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115528.2504,
              2248900.816,
              4.154967116,
              116020.7304,
              2249377.236,
              584.9349671
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115528.25038668654,
                    2248900.816459448,
                    4.154967115869056
                  ],
                  [
                    115528.25038668654,
                    2249377.236459448,
                    4.154967115869056
                  ],
                  [
                    116020.73038668655,
                    2249377.236459448,
                    584.9349671158691
                  ],
                  [
                    116020.73038668655,
                    2248900.816459448,
                    584.9349671158691
                  ],
                  [
                    115528.25038668654,
                    2248900.816459448,
                    4.154967115869056
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:21+00:00",
            "end_time": "2018-07-22T16:48:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1107.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.99991391559044,
              70.20802722165776,
              0.57970120561788
            ],
            [
              -150.9993549168599,
              70.21237069907448,
              0.57970120561788
            ],
            [
              -150.98657237652566,
              70.21216725971424,
              1257.199701205618
            ],
            [
              -150.98713375002703,
              70.20782382502135,
              1257.199701205618
            ],
            [
              -150.99991391559044,
              70.20802722165776,
              0.57970120561788
            ]
          ]
        ]
      },
      "bbox": [
        -150.9999139,
        70.20782383,
        0.5797012056,
        -150.9865724,
        70.2123707,
        1257.199701
      ],
      "properties": {
        "datetime": "2018-07-22T18:44:13Z",
        "pc:count": 4077611,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115701.0831,
            "count": 4077611,
            "maximum": 115937.0005,
            "minimum": 115444.5405,
            "name": "X",
            "position": 0,
            "stddev": 132.8309832,
            "variance": 17644.07011
          },
          {
            "average": 2250496.297,
            "count": 4077611,
            "maximum": 2250721.802,
            "minimum": 2250245.402,
            "name": "Y",
            "position": 1,
            "stddev": 133.5798511,
            "variance": 17843.57663
          },
          {
            "average": 9.297881027,
            "count": 4077611,
            "maximum": 1257.199701,
            "minimum": 0.5797012056,
            "name": "Z",
            "position": 2,
            "stddev": 2.774149036,
            "variance": 7.695902875
          },
          {
            "average": 47325.97421,
            "count": 4077611,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11183.68792,
            "variance": 125074875.5
          },
          {
            "average": 1.000215813,
            "count": 4077611,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01470566566,
            "variance": 0.0002162566025
          },
          {
            "average": 1.000434323,
            "count": 4077611,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02087117296,
            "variance": 0.0004356058608
          },
          {
            "average": 0.4993119746,
            "count": 4077611,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995879,
            "variance": 0.2499995879
          },
          {
            "average": 0.0004715996695,
            "count": 4077611,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02171122702,
            "variance": 0.0004713773789
          },
          {
            "average": 1.14319463,
            "count": 4077611,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3690519509,
            "variance": 0.1361993425
          },
          {
            "average": 0.9436894985,
            "count": 4077611,
            "maximum": 20.60400009,
            "minimum": -19.99200058,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.15475419,
            "variance": 124.4285411
          },
          {
            "average": 0.4750855342,
            "count": 4077611,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993789448,
            "variance": 0.2493793305
          },
          {
            "average": 317.6851975,
            "count": 4077611,
            "maximum": 361,
            "minimum": 303,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.45552545,
            "variance": 550.1616742
          },
          {
            "average": 216314650.7,
            "count": 4077611,
            "maximum": 216320253.1,
            "minimum": 216313267.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1978.484179,
            "variance": 3914399.645
          },
          {
            "average": 0.4750855342,
            "count": 4077611,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993789448,
            "variance": 0.2493793305
          },
          {
            "average": 0,
            "count": 4077611,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4077611,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4077611,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2552872258,
            "count": 4077611,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4360225966,
            "variance": 0.1901157048
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115444.5405,
          2250245.402,
          0.5797012056,
          115937.0005,
          2250721.802,
          1257.199701
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115444.54052903313,
                2250245.4018709688,
                0.57970120561788
              ],
              [
                115444.54052903313,
                2250721.801870969,
                0.57970120561788
              ],
              [
                115937.00052903312,
                2250721.801870969,
                1257.199701205618
              ],
              [
                115937.00052903312,
                2250245.4018709688,
                1257.199701205618
              ],
              [
                115444.54052903313,
                2250245.4018709688,
                0.57970120561788
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:44:13+00:00",
        "end_time": "2018-07-22T16:47:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1107.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1107.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1107.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1107.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9999139,
            70.20782383,
            0.5797012056,
            -150.9865724,
            70.2123707,
            1257.199701
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.99991391559044,
                  70.20802722165776,
                  0.57970120561788
                ],
                [
                  -150.9993549168599,
                  70.21237069907448,
                  0.57970120561788
                ],
                [
                  -150.98657237652566,
                  70.21216725971424,
                  1257.199701205618
                ],
                [
                  -150.98713375002703,
                  70.20782382502135,
                  1257.199701205618
                ],
                [
                  -150.99991391559044,
                  70.20802722165776,
                  0.57970120561788
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1107.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1107.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:44:13Z",
            "pc:count": 4077611,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115701.0831,
                "count": 4077611,
                "maximum": 115937.0005,
                "minimum": 115444.5405,
                "name": "X",
                "position": 0,
                "stddev": 132.8309832,
                "variance": 17644.07011
              },
              {
                "average": 2250496.297,
                "count": 4077611,
                "maximum": 2250721.802,
                "minimum": 2250245.402,
                "name": "Y",
                "position": 1,
                "stddev": 133.5798511,
                "variance": 17843.57663
              },
              {
                "average": 9.297881027,
                "count": 4077611,
                "maximum": 1257.199701,
                "minimum": 0.5797012056,
                "name": "Z",
                "position": 2,
                "stddev": 2.774149036,
                "variance": 7.695902875
              },
              {
                "average": 47325.97421,
                "count": 4077611,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11183.68792,
                "variance": 125074875.5
              },
              {
                "average": 1.000215813,
                "count": 4077611,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01470566566,
                "variance": 0.0002162566025
              },
              {
                "average": 1.000434323,
                "count": 4077611,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02087117296,
                "variance": 0.0004356058608
              },
              {
                "average": 0.4993119746,
                "count": 4077611,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995879,
                "variance": 0.2499995879
              },
              {
                "average": 0.0004715996695,
                "count": 4077611,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02171122702,
                "variance": 0.0004713773789
              },
              {
                "average": 1.14319463,
                "count": 4077611,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3690519509,
                "variance": 0.1361993425
              },
              {
                "average": 0.9436894985,
                "count": 4077611,
                "maximum": 20.60400009,
                "minimum": -19.99200058,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.15475419,
                "variance": 124.4285411
              },
              {
                "average": 0.4750855342,
                "count": 4077611,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993789448,
                "variance": 0.2493793305
              },
              {
                "average": 317.6851975,
                "count": 4077611,
                "maximum": 361,
                "minimum": 303,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.45552545,
                "variance": 550.1616742
              },
              {
                "average": 216314650.7,
                "count": 4077611,
                "maximum": 216320253.1,
                "minimum": 216313267.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1978.484179,
                "variance": 3914399.645
              },
              {
                "average": 0.4750855342,
                "count": 4077611,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993789448,
                "variance": 0.2493793305
              },
              {
                "average": 0,
                "count": 4077611,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4077611,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4077611,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2552872258,
                "count": 4077611,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4360225966,
                "variance": 0.1901157048
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115444.5405,
              2250245.402,
              0.5797012056,
              115937.0005,
              2250721.802,
              1257.199701
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115444.54052903313,
                    2250245.4018709688,
                    0.57970120561788
                  ],
                  [
                    115444.54052903313,
                    2250721.801870969,
                    0.57970120561788
                  ],
                  [
                    115937.00052903312,
                    2250721.801870969,
                    1257.199701205618
                  ],
                  [
                    115937.00052903312,
                    2250245.4018709688,
                    1257.199701205618
                  ],
                  [
                    115444.54052903313,
                    2250245.4018709688,
                    0.57970120561788
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:44:13+00:00",
            "end_time": "2018-07-22T16:47:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1257.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03681102637313,
              70.2201153987461,
              9.488010771250563
            ],
            [
              -151.036258681324,
              70.22445872614978,
              9.488010771250563
            ],
            [
              -151.02346711562262,
              70.22425773550754,
              10.148010771250563
            ],
            [
              -151.02402183823077,
              70.21991445034013,
              10.148010771250563
            ],
            [
              -151.03681102637313,
              70.2201153987461,
              9.488010771250563
            ]
          ]
        ]
      },
      "bbox": [
        -151.036811,
        70.21991445,
        9.488010771,
        -151.0234671,
        70.22445873,
        10.14801077
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:48Z",
        "pc:count": 4171568,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114225.5558,
            "count": 4171568,
            "maximum": 114459.136,
            "minimum": 113966.596,
            "name": "X",
            "position": 0,
            "stddev": 126.1000618,
            "variance": 15901.22559
          },
          {
            "average": 2251738.531,
            "count": 4171568,
            "maximum": 2251981.149,
            "minimum": 2251504.809,
            "name": "Y",
            "position": 1,
            "stddev": 133.1038009,
            "variance": 17716.6218
          },
          {
            "average": 9.678032317,
            "count": 4171568,
            "maximum": 10.14801077,
            "minimum": 9.488010771,
            "name": "Z",
            "position": 2,
            "stddev": 0.04034388857,
            "variance": 0.001627629345
          },
          {
            "average": 31923.52462,
            "count": 4171568,
            "maximum": 65535,
            "minimum": 1547,
            "name": "Intensity",
            "position": 3,
            "stddev": 8114.115199,
            "variance": 65838865.47
          },
          {
            "average": 1,
            "count": 4171568,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4171568,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5016511777,
            "count": 4171568,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973335,
            "variance": 0.2499973335
          },
          {
            "average": 0.0004523478941,
            "count": 4171568,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02126366346,
            "variance": 0.0004521433839
          },
          {
            "average": 1.17377063,
            "count": 4171568,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3789501271,
            "variance": 0.1436031988
          },
          {
            "average": -0.2458300311,
            "count": 4171568,
            "maximum": 20.44199944,
            "minimum": -19.93799973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.81832074,
            "variance": 117.0360637
          },
          {
            "average": 0.5168459438,
            "count": 4171568,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997161935,
            "variance": 0.249716274
          },
          {
            "average": 318.3357227,
            "count": 4171568,
            "maximum": 358,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.73961204,
            "variance": 389.6522836
          },
          {
            "average": 216314961.1,
            "count": 4171568,
            "maximum": 216317888.5,
            "minimum": 216313938.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1165.849706,
            "variance": 1359205.537
          },
          {
            "average": 0.5168459438,
            "count": 4171568,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997161935,
            "variance": 0.249716274
          },
          {
            "average": 0,
            "count": 4171568,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4171568,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4171568,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2395931218,
            "count": 4171568,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4268352158,
            "variance": 0.1821883015
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          113966.596,
          2251504.809,
          9.488010771,
          114459.136,
          2251981.149,
          10.14801077
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                113966.5959745045,
                2251504.8091505794,
                9.488010771250563
              ],
              [
                113966.5959745045,
                2251981.1491505792,
                9.488010771250563
              ],
              [
                114459.1359745045,
                2251981.1491505792,
                10.148010771250563
              ],
              [
                114459.1359745045,
                2251504.8091505794,
                10.148010771250563
              ],
              [
                113966.5959745045,
                2251504.8091505794,
                9.488010771250563
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:48+00:00",
        "end_time": "2018-07-22T16:58:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1257.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1257.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1257.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1257.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.036811,
            70.21991445,
            9.488010771,
            -151.0234671,
            70.22445873,
            10.14801077
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03681102637313,
                  70.2201153987461,
                  9.488010771250563
                ],
                [
                  -151.036258681324,
                  70.22445872614978,
                  9.488010771250563
                ],
                [
                  -151.02346711562262,
                  70.22425773550754,
                  10.148010771250563
                ],
                [
                  -151.02402183823077,
                  70.21991445034013,
                  10.148010771250563
                ],
                [
                  -151.03681102637313,
                  70.2201153987461,
                  9.488010771250563
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1257.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1257.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:48Z",
            "pc:count": 4171568,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114225.5558,
                "count": 4171568,
                "maximum": 114459.136,
                "minimum": 113966.596,
                "name": "X",
                "position": 0,
                "stddev": 126.1000618,
                "variance": 15901.22559
              },
              {
                "average": 2251738.531,
                "count": 4171568,
                "maximum": 2251981.149,
                "minimum": 2251504.809,
                "name": "Y",
                "position": 1,
                "stddev": 133.1038009,
                "variance": 17716.6218
              },
              {
                "average": 9.678032317,
                "count": 4171568,
                "maximum": 10.14801077,
                "minimum": 9.488010771,
                "name": "Z",
                "position": 2,
                "stddev": 0.04034388857,
                "variance": 0.001627629345
              },
              {
                "average": 31923.52462,
                "count": 4171568,
                "maximum": 65535,
                "minimum": 1547,
                "name": "Intensity",
                "position": 3,
                "stddev": 8114.115199,
                "variance": 65838865.47
              },
              {
                "average": 1,
                "count": 4171568,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4171568,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5016511777,
                "count": 4171568,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973335,
                "variance": 0.2499973335
              },
              {
                "average": 0.0004523478941,
                "count": 4171568,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02126366346,
                "variance": 0.0004521433839
              },
              {
                "average": 1.17377063,
                "count": 4171568,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3789501271,
                "variance": 0.1436031988
              },
              {
                "average": -0.2458300311,
                "count": 4171568,
                "maximum": 20.44199944,
                "minimum": -19.93799973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.81832074,
                "variance": 117.0360637
              },
              {
                "average": 0.5168459438,
                "count": 4171568,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997161935,
                "variance": 0.249716274
              },
              {
                "average": 318.3357227,
                "count": 4171568,
                "maximum": 358,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.73961204,
                "variance": 389.6522836
              },
              {
                "average": 216314961.1,
                "count": 4171568,
                "maximum": 216317888.5,
                "minimum": 216313938.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1165.849706,
                "variance": 1359205.537
              },
              {
                "average": 0.5168459438,
                "count": 4171568,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997161935,
                "variance": 0.249716274
              },
              {
                "average": 0,
                "count": 4171568,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4171568,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4171568,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2395931218,
                "count": 4171568,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4268352158,
                "variance": 0.1821883015
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              113966.596,
              2251504.809,
              9.488010771,
              114459.136,
              2251981.149,
              10.14801077
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    113966.5959745045,
                    2251504.8091505794,
                    9.488010771250563
                  ],
                  [
                    113966.5959745045,
                    2251981.1491505792,
                    9.488010771250563
                  ],
                  [
                    114459.1359745045,
                    2251981.1491505792,
                    10.148010771250563
                  ],
                  [
                    114459.1359745045,
                    2251504.8091505794,
                    10.148010771250563
                  ],
                  [
                    113966.5959745045,
                    2251504.8091505794,
                    9.488010771250563
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:48+00:00",
            "end_time": "2018-07-22T16:58:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1104.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03619180349835,
              70.20782144916035,
              7.321436472520645
            ],
            [
              -151.03563944875077,
              70.21216594006147,
              7.321436472520645
            ],
            [
              -151.02285878194996,
              70.21196498680142,
              1262.8614364725206
            ],
            [
              -151.02341351177364,
              70.20762053811137,
              1262.8614364725206
            ],
            [
              -151.03619180349835,
              70.20782144916035,
              7.321436472520645
            ]
          ]
        ]
      },
      "bbox": [
        -151.0361918,
        70.20762054,
        7.321436473,
        -151.0228588,
        70.21216594,
        1262.861436
      ],
      "properties": {
        "datetime": "2018-07-22T18:43:51Z",
        "pc:count": 4328772,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114304.9095,
            "count": 4328772,
            "maximum": 114542.871,
            "minimum": 114050.491,
            "name": "X",
            "position": 0,
            "stddev": 128.5049353,
            "variance": 16513.51839
          },
          {
            "average": 2250408.101,
            "count": 4328772,
            "maximum": 2250636.696,
            "minimum": 2250160.196,
            "name": "Y",
            "position": 1,
            "stddev": 133.2813823,
            "variance": 17763.92686
          },
          {
            "average": 9.180153954,
            "count": 4328772,
            "maximum": 1262.861436,
            "minimum": 7.321436473,
            "name": "Z",
            "position": 2,
            "stddev": 2.617183914,
            "variance": 6.849651639
          },
          {
            "average": 45868.05426,
            "count": 4328772,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10209.97615,
            "variance": 104243613.1
          },
          {
            "average": 1.00002287,
            "count": 4328772,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004782228522,
            "variance": 2.286970964e-05
          },
          {
            "average": 1.00004574,
            "count": 4328772,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006763015095,
            "variance": 4.573837318e-05
          },
          {
            "average": 0.4999205317,
            "count": 4328772,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000514,
            "variance": 0.2500000514
          },
          {
            "average": 0.000501527916,
            "count": 4328772,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02238920502,
            "variance": 0.0005012765016
          },
          {
            "average": 1.192176211,
            "count": 4328772,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3961194421,
            "variance": 0.1569106124
          },
          {
            "average": 1.003149768,
            "count": 4328772,
            "maximum": 20.55599976,
            "minimum": -19.90200043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97406533,
            "variance": 120.4301099
          },
          {
            "average": 0.5078481842,
            "count": 4328772,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49993846,
            "variance": 0.2499384637
          },
          {
            "average": 319.8316116,
            "count": 4328772,
            "maximum": 361,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.45035731,
            "variance": 460.1178289
          },
          {
            "average": 216315227,
            "count": 4328772,
            "maximum": 216320231.5,
            "minimum": 216313916.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1602.645139,
            "variance": 2568471.441
          },
          {
            "average": 0.5078481842,
            "count": 4328772,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49993846,
            "variance": 0.2499384637
          },
          {
            "average": 0,
            "count": 4328772,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4328772,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4328772,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2471010254,
            "count": 4328772,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4313260387,
            "variance": 0.1860421516
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114050.491,
          2250160.196,
          7.321436473,
          114542.871,
          2250636.696,
          1262.861436
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114050.49102789137,
                2250160.1955653187,
                7.321436472520645
              ],
              [
                114050.49102789137,
                2250636.6955653187,
                7.321436472520645
              ],
              [
                114542.87102789138,
                2250636.6955653187,
                1262.8614364725206
              ],
              [
                114542.87102789138,
                2250160.1955653187,
                1262.8614364725206
              ],
              [
                114050.49102789137,
                2250160.1955653187,
                7.321436472520645
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:43:51+00:00",
        "end_time": "2018-07-22T16:58:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1104.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1104.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1104.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1104.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0361918,
            70.20762054,
            7.321436473,
            -151.0228588,
            70.21216594,
            1262.861436
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03619180349835,
                  70.20782144916035,
                  7.321436472520645
                ],
                [
                  -151.03563944875077,
                  70.21216594006147,
                  7.321436472520645
                ],
                [
                  -151.02285878194996,
                  70.21196498680142,
                  1262.8614364725206
                ],
                [
                  -151.02341351177364,
                  70.20762053811137,
                  1262.8614364725206
                ],
                [
                  -151.03619180349835,
                  70.20782144916035,
                  7.321436472520645
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1104.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1104.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:43:51Z",
            "pc:count": 4328772,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114304.9095,
                "count": 4328772,
                "maximum": 114542.871,
                "minimum": 114050.491,
                "name": "X",
                "position": 0,
                "stddev": 128.5049353,
                "variance": 16513.51839
              },
              {
                "average": 2250408.101,
                "count": 4328772,
                "maximum": 2250636.696,
                "minimum": 2250160.196,
                "name": "Y",
                "position": 1,
                "stddev": 133.2813823,
                "variance": 17763.92686
              },
              {
                "average": 9.180153954,
                "count": 4328772,
                "maximum": 1262.861436,
                "minimum": 7.321436473,
                "name": "Z",
                "position": 2,
                "stddev": 2.617183914,
                "variance": 6.849651639
              },
              {
                "average": 45868.05426,
                "count": 4328772,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10209.97615,
                "variance": 104243613.1
              },
              {
                "average": 1.00002287,
                "count": 4328772,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004782228522,
                "variance": 2.286970964e-05
              },
              {
                "average": 1.00004574,
                "count": 4328772,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006763015095,
                "variance": 4.573837318e-05
              },
              {
                "average": 0.4999205317,
                "count": 4328772,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000514,
                "variance": 0.2500000514
              },
              {
                "average": 0.000501527916,
                "count": 4328772,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02238920502,
                "variance": 0.0005012765016
              },
              {
                "average": 1.192176211,
                "count": 4328772,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3961194421,
                "variance": 0.1569106124
              },
              {
                "average": 1.003149768,
                "count": 4328772,
                "maximum": 20.55599976,
                "minimum": -19.90200043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97406533,
                "variance": 120.4301099
              },
              {
                "average": 0.5078481842,
                "count": 4328772,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49993846,
                "variance": 0.2499384637
              },
              {
                "average": 319.8316116,
                "count": 4328772,
                "maximum": 361,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.45035731,
                "variance": 460.1178289
              },
              {
                "average": 216315227,
                "count": 4328772,
                "maximum": 216320231.5,
                "minimum": 216313916.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1602.645139,
                "variance": 2568471.441
              },
              {
                "average": 0.5078481842,
                "count": 4328772,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49993846,
                "variance": 0.2499384637
              },
              {
                "average": 0,
                "count": 4328772,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4328772,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4328772,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2471010254,
                "count": 4328772,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4313260387,
                "variance": 0.1860421516
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114050.491,
              2250160.196,
              7.321436473,
              114542.871,
              2250636.696,
              1262.861436
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114050.49102789137,
                    2250160.1955653187,
                    7.321436472520645
                  ],
                  [
                    114050.49102789137,
                    2250636.6955653187,
                    7.321436472520645
                  ],
                  [
                    114542.87102789138,
                    2250636.6955653187,
                    1262.8614364725206
                  ],
                  [
                    114542.87102789138,
                    2250160.1955653187,
                    1262.8614364725206
                  ],
                  [
                    114050.49102789137,
                    2250160.1955653187,
                    7.321436472520645
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:43:51+00:00",
            "end_time": "2018-07-22T16:58:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_0931.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0112040655388,
              70.19156777108584,
              5.388788689689036
            ],
            [
              -151.01064737480468,
              70.1959123485917,
              5.388788689689036
            ],
            [
              -150.9978747861936,
              70.19570970778645,
              13.568788689689036
            ],
            [
              -150.99843384902806,
              70.19136517280893,
              13.568788689689036
            ],
            [
              -151.0112040655388,
              70.19156777108584,
              5.388788689689036
            ]
          ]
        ]
      },
      "bbox": [
        -151.0112041,
        70.19136517,
        5.38878869,
        -150.9978748,
        70.19591235,
        13.56878869
      ],
      "properties": {
        "datetime": "2018-07-22T19:05:30Z",
        "pc:count": 4909409,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115342.1493,
            "count": 4909409,
            "maximum": 115583.9458,
            "minimum": 115091.5258,
            "name": "X",
            "position": 0,
            "stddev": 136.7330019,
            "variance": 18695.91381
          },
          {
            "average": 2248676.698,
            "count": 4909409,
            "maximum": 2248900.638,
            "minimum": 2248424.078,
            "name": "Y",
            "position": 1,
            "stddev": 124.1868632,
            "variance": 15422.37698
          },
          {
            "average": 10.8915505,
            "count": 4909409,
            "maximum": 13.56878869,
            "minimum": 5.38878869,
            "name": "Z",
            "position": 2,
            "stddev": 1.618729583,
            "variance": 2.620285462
          },
          {
            "average": 53468.34385,
            "count": 4909409,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 7422.73217,
            "variance": 55096952.87
          },
          {
            "average": 1.000000815,
            "count": 4909409,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009026414146,
            "variance": 8.147615234e-07
          },
          {
            "average": 1.00000163,
            "count": 4909409,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00127652721,
            "variance": 1.629521719e-06
          },
          {
            "average": 0.5041390929,
            "count": 4909409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999829185,
            "variance": 0.2499829188
          },
          {
            "average": 0.0003931226753,
            "count": 4909409,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01982342579,
            "variance": 0.0003929682099
          },
          {
            "average": 1.171821293,
            "count": 4909409,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3832393932,
            "variance": 0.1468724325
          },
          {
            "average": -0.8677268033,
            "count": 4909409,
            "maximum": 20.55599976,
            "minimum": -20.02199936,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.89261983,
            "variance": 141.4344063
          },
          {
            "average": 0.5291465836,
            "count": 4909409,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991498046,
            "variance": 0.2491505274
          },
          {
            "average": 323.9669361,
            "count": 4909409,
            "maximum": 364,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 26.91184445,
            "variance": 724.2473718
          },
          {
            "average": 216316164.2,
            "count": 4909409,
            "maximum": 216321530.9,
            "minimum": 216313436.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3442.943593,
            "variance": 11853860.58
          },
          {
            "average": 0.5291465836,
            "count": 4909409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991498046,
            "variance": 0.2491505274
          },
          {
            "average": 0,
            "count": 4909409,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4909409,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4909409,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2212653295,
            "count": 4909409,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4150988058,
            "variance": 0.1723070186
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115091.5258,
          2248424.078,
          5.38878869,
          115583.9458,
          2248900.638,
          13.56878869
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115091.52581352068,
                2248424.0775494245,
                5.388788689689036
              ],
              [
                115091.52581352068,
                2248900.637549424,
                5.388788689689036
              ],
              [
                115583.9458135207,
                2248900.637549424,
                13.568788689689036
              ],
              [
                115583.9458135207,
                2248424.0775494245,
                13.568788689689036
              ],
              [
                115091.52581352068,
                2248424.0775494245,
                5.388788689689036
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T19:05:30+00:00",
        "end_time": "2018-07-22T16:50:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_0931.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_0931.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_0931.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0931.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0112041,
            70.19136517,
            5.38878869,
            -150.9978748,
            70.19591235,
            13.56878869
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0112040655388,
                  70.19156777108584,
                  5.388788689689036
                ],
                [
                  -151.01064737480468,
                  70.1959123485917,
                  5.388788689689036
                ],
                [
                  -150.9978747861936,
                  70.19570970778645,
                  13.568788689689036
                ],
                [
                  -150.99843384902806,
                  70.19136517280893,
                  13.568788689689036
                ],
                [
                  -151.0112040655388,
                  70.19156777108584,
                  5.388788689689036
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_0931.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_0931.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T19:05:30Z",
            "pc:count": 4909409,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115342.1493,
                "count": 4909409,
                "maximum": 115583.9458,
                "minimum": 115091.5258,
                "name": "X",
                "position": 0,
                "stddev": 136.7330019,
                "variance": 18695.91381
              },
              {
                "average": 2248676.698,
                "count": 4909409,
                "maximum": 2248900.638,
                "minimum": 2248424.078,
                "name": "Y",
                "position": 1,
                "stddev": 124.1868632,
                "variance": 15422.37698
              },
              {
                "average": 10.8915505,
                "count": 4909409,
                "maximum": 13.56878869,
                "minimum": 5.38878869,
                "name": "Z",
                "position": 2,
                "stddev": 1.618729583,
                "variance": 2.620285462
              },
              {
                "average": 53468.34385,
                "count": 4909409,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 7422.73217,
                "variance": 55096952.87
              },
              {
                "average": 1.000000815,
                "count": 4909409,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009026414146,
                "variance": 8.147615234e-07
              },
              {
                "average": 1.00000163,
                "count": 4909409,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00127652721,
                "variance": 1.629521719e-06
              },
              {
                "average": 0.5041390929,
                "count": 4909409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999829185,
                "variance": 0.2499829188
              },
              {
                "average": 0.0003931226753,
                "count": 4909409,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01982342579,
                "variance": 0.0003929682099
              },
              {
                "average": 1.171821293,
                "count": 4909409,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3832393932,
                "variance": 0.1468724325
              },
              {
                "average": -0.8677268033,
                "count": 4909409,
                "maximum": 20.55599976,
                "minimum": -20.02199936,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.89261983,
                "variance": 141.4344063
              },
              {
                "average": 0.5291465836,
                "count": 4909409,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991498046,
                "variance": 0.2491505274
              },
              {
                "average": 323.9669361,
                "count": 4909409,
                "maximum": 364,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 26.91184445,
                "variance": 724.2473718
              },
              {
                "average": 216316164.2,
                "count": 4909409,
                "maximum": 216321530.9,
                "minimum": 216313436.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3442.943593,
                "variance": 11853860.58
              },
              {
                "average": 0.5291465836,
                "count": 4909409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991498046,
                "variance": 0.2491505274
              },
              {
                "average": 0,
                "count": 4909409,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4909409,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4909409,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2212653295,
                "count": 4909409,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4150988058,
                "variance": 0.1723070186
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115091.5258,
              2248424.078,
              5.38878869,
              115583.9458,
              2248900.638,
              13.56878869
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115091.52581352068,
                    2248424.0775494245,
                    5.388788689689036
                  ],
                  [
                    115091.52581352068,
                    2248900.637549424,
                    5.388788689689036
                  ],
                  [
                    115583.9458135207,
                    2248900.637549424,
                    13.568788689689036
                  ],
                  [
                    115583.9458135207,
                    2248424.0775494245,
                    13.568788689689036
                  ],
                  [
                    115091.52581352068,
                    2248424.0775494245,
                    5.388788689689036
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T19:05:30+00:00",
            "end_time": "2018-07-22T16:50:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1410.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03742703339438,
              70.23240837702916,
              -2.928691052378099
            ],
            [
              -151.03687441898464,
              70.23675272994687,
              -2.928691052378099
            ],
            [
              -151.02407869856614,
              70.23655180798664,
              673.5513089476219
            ],
            [
              -151.02463369296404,
              70.23220749732934,
              673.5513089476219
            ],
            [
              -151.03742703339438,
              70.23240837702916,
              -2.928691052378099
            ]
          ]
        ]
      },
      "bbox": [
        -151.037427,
        70.2322075,
        -2.928691052,
        -151.0240787,
        70.23675273,
        673.5513089
      ],
      "properties": {
        "datetime": "2018-07-22T17:45:46Z",
        "pc:count": 4079226,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114130.1423,
            "count": 4079226,
            "maximum": 114375.2984,
            "minimum": 113882.8584,
            "name": "X",
            "position": 0,
            "stddev": 126.8045661,
            "variance": 16079.398
          },
          {
            "average": 2253095.249,
            "count": 4079226,
            "maximum": 2253325.652,
            "minimum": 2252849.232,
            "name": "Y",
            "position": 1,
            "stddev": 126.2229574,
            "variance": 15932.23497
          },
          {
            "average": 11.42284416,
            "count": 4079226,
            "maximum": 673.5513089,
            "minimum": -2.928691052,
            "name": "Z",
            "position": 2,
            "stddev": 7.056440742,
            "variance": 49.79335594
          },
          {
            "average": 48099.97215,
            "count": 4079226,
            "maximum": 65535,
            "minimum": 773,
            "name": "Intensity",
            "position": 3,
            "stddev": 9726.423078,
            "variance": 94603305.88
          },
          {
            "average": 1.000005393,
            "count": 4079226,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002322316132,
            "variance": 5.393152216e-06
          },
          {
            "average": 1.000010541,
            "count": 4079226,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003246707083,
            "variance": 1.054110688e-05
          },
          {
            "average": 0.5004981337,
            "count": 4079226,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998131,
            "variance": 0.2499998131
          },
          {
            "average": 0.0003346223033,
            "count": 4079226,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01828962584,
            "variance": 0.0003345104133
          },
          {
            "average": 1.223995925,
            "count": 4079226,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4205188356,
            "variance": 0.1768360911
          },
          {
            "average": -0.01238057626,
            "count": 4079226,
            "maximum": 20.20199966,
            "minimum": -20.04599953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.11182904,
            "variance": 102.2490865
          },
          {
            "average": 0.4981440107,
            "count": 4079226,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999966166,
            "variance": 0.2499966166
          },
          {
            "average": 317.0080081,
            "count": 4079226,
            "maximum": 355,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.15686634,
            "variance": 329.6717954
          },
          {
            "average": 216314766.8,
            "count": 4079226,
            "maximum": 216316746,
            "minimum": 216313960.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 833.1465574,
            "variance": 694133.1861
          },
          {
            "average": 0.4981440107,
            "count": 4079226,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999966166,
            "variance": 0.2499966166
          },
          {
            "average": 0,
            "count": 4079226,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4079226,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4079226,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1871899228,
            "count": 4079226,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.39006396,
            "variance": 0.1521498929
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          113882.8584,
          2252849.232,
          -2.928691052,
          114375.2984,
          2253325.652,
          673.5513089
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                113882.858350634,
                2252849.232279556,
                -2.928691052378099
              ],
              [
                113882.858350634,
                2253325.652279556,
                -2.928691052378099
              ],
              [
                114375.298350634,
                2253325.652279556,
                673.5513089476219
              ],
              [
                114375.298350634,
                2252849.232279556,
                673.5513089476219
              ],
              [
                113882.858350634,
                2252849.232279556,
                -2.928691052378099
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:45:46+00:00",
        "end_time": "2018-07-22T16:59:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1410.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1410.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1410.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1410.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.037427,
            70.2322075,
            -2.928691052,
            -151.0240787,
            70.23675273,
            673.5513089
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03742703339438,
                  70.23240837702916,
                  -2.928691052378099
                ],
                [
                  -151.03687441898464,
                  70.23675272994687,
                  -2.928691052378099
                ],
                [
                  -151.02407869856614,
                  70.23655180798664,
                  673.5513089476219
                ],
                [
                  -151.02463369296404,
                  70.23220749732934,
                  673.5513089476219
                ],
                [
                  -151.03742703339438,
                  70.23240837702916,
                  -2.928691052378099
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1410.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1410.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:45:46Z",
            "pc:count": 4079226,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114130.1423,
                "count": 4079226,
                "maximum": 114375.2984,
                "minimum": 113882.8584,
                "name": "X",
                "position": 0,
                "stddev": 126.8045661,
                "variance": 16079.398
              },
              {
                "average": 2253095.249,
                "count": 4079226,
                "maximum": 2253325.652,
                "minimum": 2252849.232,
                "name": "Y",
                "position": 1,
                "stddev": 126.2229574,
                "variance": 15932.23497
              },
              {
                "average": 11.42284416,
                "count": 4079226,
                "maximum": 673.5513089,
                "minimum": -2.928691052,
                "name": "Z",
                "position": 2,
                "stddev": 7.056440742,
                "variance": 49.79335594
              },
              {
                "average": 48099.97215,
                "count": 4079226,
                "maximum": 65535,
                "minimum": 773,
                "name": "Intensity",
                "position": 3,
                "stddev": 9726.423078,
                "variance": 94603305.88
              },
              {
                "average": 1.000005393,
                "count": 4079226,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002322316132,
                "variance": 5.393152216e-06
              },
              {
                "average": 1.000010541,
                "count": 4079226,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003246707083,
                "variance": 1.054110688e-05
              },
              {
                "average": 0.5004981337,
                "count": 4079226,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998131,
                "variance": 0.2499998131
              },
              {
                "average": 0.0003346223033,
                "count": 4079226,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01828962584,
                "variance": 0.0003345104133
              },
              {
                "average": 1.223995925,
                "count": 4079226,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4205188356,
                "variance": 0.1768360911
              },
              {
                "average": -0.01238057626,
                "count": 4079226,
                "maximum": 20.20199966,
                "minimum": -20.04599953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.11182904,
                "variance": 102.2490865
              },
              {
                "average": 0.4981440107,
                "count": 4079226,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999966166,
                "variance": 0.2499966166
              },
              {
                "average": 317.0080081,
                "count": 4079226,
                "maximum": 355,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.15686634,
                "variance": 329.6717954
              },
              {
                "average": 216314766.8,
                "count": 4079226,
                "maximum": 216316746,
                "minimum": 216313960.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 833.1465574,
                "variance": 694133.1861
              },
              {
                "average": 0.4981440107,
                "count": 4079226,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999966166,
                "variance": 0.2499966166
              },
              {
                "average": 0,
                "count": 4079226,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4079226,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4079226,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1871899228,
                "count": 4079226,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.39006396,
                "variance": 0.1521498929
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              113882.8584,
              2252849.232,
              -2.928691052,
              114375.2984,
              2253325.652,
              673.5513089
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    113882.858350634,
                    2252849.232279556,
                    -2.928691052378099
                  ],
                  [
                    113882.858350634,
                    2253325.652279556,
                    -2.928691052378099
                  ],
                  [
                    114375.298350634,
                    2253325.652279556,
                    673.5513089476219
                  ],
                  [
                    114375.298350634,
                    2252849.232279556,
                    673.5513089476219
                  ],
                  [
                    113882.858350634,
                    2252849.232279556,
                    -2.928691052378099
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:45:46+00:00",
            "end_time": "2018-07-22T16:59:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1415.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -150.97689093992213,
              70.23274745166592,
              5.066870898836043
            ],
            [
              -150.97632710415266,
              70.23709108698682,
              5.066870898836043
            ],
            [
              -150.9635301673884,
              70.23688604572709,
              6.666870898836042
            ],
            [
              -150.96409638281202,
              70.23254245352666,
              6.666870898836042
            ],
            [
              -150.97689093992213,
              70.23274745166592,
              5.066870898836043
            ]
          ]
        ]
      },
      "bbox": [
        -150.9768909,
        70.23254245,
        5.066870899,
        -150.9635302,
        70.23709109,
        6.666870899
      ],
      "properties": {
        "datetime": "2018-07-22T17:46:24Z",
        "pc:count": 3722021,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 116445.5489,
            "count": 3722021,
            "maximum": 116699.1156,
            "minimum": 116206.6156,
            "name": "X",
            "position": 0,
            "stddev": 136.4844649,
            "variance": 18628.00915
          },
          {
            "average": 2253244.456,
            "count": 3722021,
            "maximum": 2253467.57,
            "minimum": 2252991.21,
            "name": "Y",
            "position": 1,
            "stddev": 130.6430571,
            "variance": 17067.60836
          },
          {
            "average": 5.850060671,
            "count": 3722021,
            "maximum": 6.666870899,
            "minimum": 5.066870899,
            "name": "Z",
            "position": 2,
            "stddev": 0.1714120582,
            "variance": 0.02938209369
          },
          {
            "average": 43944.23457,
            "count": 3722021,
            "maximum": 65535,
            "minimum": 1276,
            "name": "Intensity",
            "position": 3,
            "stddev": 10588.44713,
            "variance": 112115212.5
          },
          {
            "average": 1,
            "count": 3722021,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3722021,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5028421387,
            "count": 3722021,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999919893,
            "variance": 0.2499919894
          },
          {
            "average": 0.0003707663122,
            "count": 3722021,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01925172574,
            "variance": 0.0003706289441
          },
          {
            "average": 1.137982832,
            "count": 3722021,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3453382185,
            "variance": 0.1192584851
          },
          {
            "average": -0.3148997523,
            "count": 3722021,
            "maximum": 19.11000061,
            "minimum": -19.8239994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83934246,
            "variance": 117.491345
          },
          {
            "average": 0.5237877486,
            "count": 3722021,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994338895,
            "variance": 0.24943421
          },
          {
            "average": 311.5677284,
            "count": 3722021,
            "maximum": 355,
            "minimum": 300,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.47013104,
            "variance": 419.0262647
          },
          {
            "average": 216313605.1,
            "count": 3722021,
            "maximum": 216316784.4,
            "minimum": 216312617.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1369.829725,
            "variance": 1876433.474
          },
          {
            "average": 0.5237877486,
            "count": 3722021,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994338895,
            "variance": 0.24943421
          },
          {
            "average": 0,
            "count": 3722021,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3722021,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3722021,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2377858696,
            "count": 3722021,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4257273758,
            "variance": 0.1812437985
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          116206.6156,
          2252991.21,
          5.066870899,
          116699.1156,
          2253467.57,
          6.666870899
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                116206.6156446746,
                2252991.209801357,
                5.066870898836043
              ],
              [
                116206.6156446746,
                2253467.569801357,
                5.066870898836043
              ],
              [
                116699.1156446746,
                2253467.569801357,
                6.666870898836042
              ],
              [
                116699.1156446746,
                2252991.209801357,
                6.666870898836042
              ],
              [
                116206.6156446746,
                2252991.209801357,
                5.066870898836043
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T17:46:24+00:00",
        "end_time": "2018-07-22T16:36:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1415.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1415.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1415.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1415.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -150.9768909,
            70.23254245,
            5.066870899,
            -150.9635302,
            70.23709109,
            6.666870899
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -150.97689093992213,
                  70.23274745166592,
                  5.066870898836043
                ],
                [
                  -150.97632710415266,
                  70.23709108698682,
                  5.066870898836043
                ],
                [
                  -150.9635301673884,
                  70.23688604572709,
                  6.666870898836042
                ],
                [
                  -150.96409638281202,
                  70.23254245352666,
                  6.666870898836042
                ],
                [
                  -150.97689093992213,
                  70.23274745166592,
                  5.066870898836043
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1415.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1415.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T17:46:24Z",
            "pc:count": 3722021,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 116445.5489,
                "count": 3722021,
                "maximum": 116699.1156,
                "minimum": 116206.6156,
                "name": "X",
                "position": 0,
                "stddev": 136.4844649,
                "variance": 18628.00915
              },
              {
                "average": 2253244.456,
                "count": 3722021,
                "maximum": 2253467.57,
                "minimum": 2252991.21,
                "name": "Y",
                "position": 1,
                "stddev": 130.6430571,
                "variance": 17067.60836
              },
              {
                "average": 5.850060671,
                "count": 3722021,
                "maximum": 6.666870899,
                "minimum": 5.066870899,
                "name": "Z",
                "position": 2,
                "stddev": 0.1714120582,
                "variance": 0.02938209369
              },
              {
                "average": 43944.23457,
                "count": 3722021,
                "maximum": 65535,
                "minimum": 1276,
                "name": "Intensity",
                "position": 3,
                "stddev": 10588.44713,
                "variance": 112115212.5
              },
              {
                "average": 1,
                "count": 3722021,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3722021,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5028421387,
                "count": 3722021,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999919893,
                "variance": 0.2499919894
              },
              {
                "average": 0.0003707663122,
                "count": 3722021,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01925172574,
                "variance": 0.0003706289441
              },
              {
                "average": 1.137982832,
                "count": 3722021,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3453382185,
                "variance": 0.1192584851
              },
              {
                "average": -0.3148997523,
                "count": 3722021,
                "maximum": 19.11000061,
                "minimum": -19.8239994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83934246,
                "variance": 117.491345
              },
              {
                "average": 0.5237877486,
                "count": 3722021,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994338895,
                "variance": 0.24943421
              },
              {
                "average": 311.5677284,
                "count": 3722021,
                "maximum": 355,
                "minimum": 300,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.47013104,
                "variance": 419.0262647
              },
              {
                "average": 216313605.1,
                "count": 3722021,
                "maximum": 216316784.4,
                "minimum": 216312617.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1369.829725,
                "variance": 1876433.474
              },
              {
                "average": 0.5237877486,
                "count": 3722021,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994338895,
                "variance": 0.24943421
              },
              {
                "average": 0,
                "count": 3722021,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3722021,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3722021,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2377858696,
                "count": 3722021,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4257273758,
                "variance": 0.1812437985
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              116206.6156,
              2252991.21,
              5.066870899,
              116699.1156,
              2253467.57,
              6.666870899
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    116206.6156446746,
                    2252991.209801357,
                    5.066870898836043
                  ],
                  [
                    116206.6156446746,
                    2253467.569801357,
                    5.066870898836043
                  ],
                  [
                    116699.1156446746,
                    2253467.569801357,
                    6.666870898836042
                  ],
                  [
                    116699.1156446746,
                    2252991.209801357,
                    6.666870898836042
                  ],
                  [
                    116206.6156446746,
                    2252991.209801357,
                    5.066870898836043
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T17:46:24+00:00",
            "end_time": "2018-07-22T16:36:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1207.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0245081069505,
              70.21608649847877,
              9.200652311844635
            ],
            [
              -151.02395344952646,
              70.22043060540491,
              9.200652311844635
            ],
            [
              -151.011163680477,
              70.22022877896062,
              584.5206523118447
            ],
            [
              -151.01172071515504,
              70.21588471444457,
              584.5206523118447
            ],
            [
              -151.0245081069505,
              70.21608649847877,
              9.200652311844635
            ]
          ]
        ]
      },
      "bbox": [
        -151.0245081,
        70.21588471,
        9.200652312,
        -151.0111637,
        70.22043061,
        584.5206523
      ],
      "properties": {
        "datetime": "2018-07-22T18:04:40Z",
        "pc:count": 4729798,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114700.9405,
            "count": 4729798,
            "maximum": 114951.7911,
            "minimum": 114459.2311,
            "name": "X",
            "position": 0,
            "stddev": 136.2253254,
            "variance": 18557.33927
          },
          {
            "average": 2251329.947,
            "count": 4729798,
            "maximum": 2251561.422,
            "minimum": 2251084.982,
            "name": "Y",
            "position": 1,
            "stddev": 130.4782657,
            "variance": 17024.57781
          },
          {
            "average": 9.980018473,
            "count": 4729798,
            "maximum": 584.5206523,
            "minimum": 9.200652312,
            "name": "Z",
            "position": 2,
            "stddev": 1.310966426,
            "variance": 1.718632971
          },
          {
            "average": 42221.47027,
            "count": 4729798,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 12074.83359,
            "variance": 145801606.1
          },
          {
            "average": 1.000000211,
            "count": 4729798,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004598103083,
            "variance": 2.114255197e-07
          },
          {
            "average": 1.000000423,
            "count": 4729798,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006502699054,
            "variance": 4.228509499e-07
          },
          {
            "average": 0.4977580438,
            "count": 4729798,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999950265,
            "variance": 0.2499950265
          },
          {
            "average": 0.0004201025075,
            "count": 4729798,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02049209873,
            "variance": 0.0004199261102
          },
          {
            "average": 1.22229258,
            "count": 4729798,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7476226265,
            "variance": 0.5589395916
          },
          {
            "average": 1.548910135,
            "count": 4729798,
            "maximum": 20.53199959,
            "minimum": -20.02799988,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.36497182,
            "variance": 129.1625845
          },
          {
            "average": 0.4786603995,
            "count": 4729798,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995444667,
            "variance": 0.2495446742
          },
          {
            "average": 324.0390372,
            "count": 4729798,
            "maximum": 358,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.97198414,
            "variance": 574.6560236
          },
          {
            "average": 216315261.2,
            "count": 4729798,
            "maximum": 216317880.9,
            "minimum": 216313695.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1654.008317,
            "variance": 2735743.514
          },
          {
            "average": 0.4786603995,
            "count": 4729798,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995444667,
            "variance": 0.2495446742
          },
          {
            "average": 0,
            "count": 4729798,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4729798,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4729798,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2213578677,
            "count": 4729798,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4151609309,
            "variance": 0.1723585986
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114459.2311,
          2251084.982,
          9.200652312,
          114951.7911,
          2251561.422,
          584.5206523
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114459.2311275709,
                2251084.9821462217,
                9.200652311844635
              ],
              [
                114459.2311275709,
                2251561.422146222,
                9.200652311844635
              ],
              [
                114951.7911275709,
                2251561.422146222,
                584.5206523118447
              ],
              [
                114951.7911275709,
                2251084.9821462217,
                584.5206523118447
              ],
              [
                114459.2311275709,
                2251084.9821462217,
                9.200652311844635
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:04:40+00:00",
        "end_time": "2018-07-22T16:54:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1207.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1207.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1207.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1207.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0245081,
            70.21588471,
            9.200652312,
            -151.0111637,
            70.22043061,
            584.5206523
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0245081069505,
                  70.21608649847877,
                  9.200652311844635
                ],
                [
                  -151.02395344952646,
                  70.22043060540491,
                  9.200652311844635
                ],
                [
                  -151.011163680477,
                  70.22022877896062,
                  584.5206523118447
                ],
                [
                  -151.01172071515504,
                  70.21588471444457,
                  584.5206523118447
                ],
                [
                  -151.0245081069505,
                  70.21608649847877,
                  9.200652311844635
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1207.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1207.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:04:40Z",
            "pc:count": 4729798,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114700.9405,
                "count": 4729798,
                "maximum": 114951.7911,
                "minimum": 114459.2311,
                "name": "X",
                "position": 0,
                "stddev": 136.2253254,
                "variance": 18557.33927
              },
              {
                "average": 2251329.947,
                "count": 4729798,
                "maximum": 2251561.422,
                "minimum": 2251084.982,
                "name": "Y",
                "position": 1,
                "stddev": 130.4782657,
                "variance": 17024.57781
              },
              {
                "average": 9.980018473,
                "count": 4729798,
                "maximum": 584.5206523,
                "minimum": 9.200652312,
                "name": "Z",
                "position": 2,
                "stddev": 1.310966426,
                "variance": 1.718632971
              },
              {
                "average": 42221.47027,
                "count": 4729798,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 12074.83359,
                "variance": 145801606.1
              },
              {
                "average": 1.000000211,
                "count": 4729798,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004598103083,
                "variance": 2.114255197e-07
              },
              {
                "average": 1.000000423,
                "count": 4729798,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006502699054,
                "variance": 4.228509499e-07
              },
              {
                "average": 0.4977580438,
                "count": 4729798,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999950265,
                "variance": 0.2499950265
              },
              {
                "average": 0.0004201025075,
                "count": 4729798,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02049209873,
                "variance": 0.0004199261102
              },
              {
                "average": 1.22229258,
                "count": 4729798,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7476226265,
                "variance": 0.5589395916
              },
              {
                "average": 1.548910135,
                "count": 4729798,
                "maximum": 20.53199959,
                "minimum": -20.02799988,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.36497182,
                "variance": 129.1625845
              },
              {
                "average": 0.4786603995,
                "count": 4729798,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995444667,
                "variance": 0.2495446742
              },
              {
                "average": 324.0390372,
                "count": 4729798,
                "maximum": 358,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.97198414,
                "variance": 574.6560236
              },
              {
                "average": 216315261.2,
                "count": 4729798,
                "maximum": 216317880.9,
                "minimum": 216313695.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1654.008317,
                "variance": 2735743.514
              },
              {
                "average": 0.4786603995,
                "count": 4729798,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995444667,
                "variance": 0.2495446742
              },
              {
                "average": 0,
                "count": 4729798,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4729798,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4729798,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2213578677,
                "count": 4729798,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4151609309,
                "variance": 0.1723585986
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114459.2311,
              2251084.982,
              9.200652312,
              114951.7911,
              2251561.422,
              584.5206523
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114459.2311275709,
                    2251084.9821462217,
                    9.200652311844635
                  ],
                  [
                    114459.2311275709,
                    2251561.422146222,
                    9.200652311844635
                  ],
                  [
                    114951.7911275709,
                    2251561.422146222,
                    584.5206523118447
                  ],
                  [
                    114951.7911275709,
                    2251084.9821462217,
                    584.5206523118447
                  ],
                  [
                    114459.2311275709,
                    2251084.9821462217,
                    9.200652311844635
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:04:40+00:00",
            "end_time": "2018-07-22T16:54:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1012.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01160485163177,
              70.1997638632447,
              10.558869770034221
            ],
            [
              -151.0110481568406,
              70.20410772527909,
              10.558869770034221
            ],
            [
              -150.9982700408587,
              70.20390508582013,
              1284.6588697700345
            ],
            [
              -150.99882910911398,
              70.19956126632596,
              1284.6588697700345
            ],
            [
              -151.01160485163177,
              70.1997638632447,
              10.558869770034221
            ]
          ]
        ]
      },
      "bbox": [
        -151.0116049,
        70.19956127,
        10.55886977,
        -150.99827,
        70.20410773,
        1284.65887
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:17Z",
        "pc:count": 6323804,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115288.3458,
            "count": 6323804,
            "maximum": 115528.1627,
            "minimum": 115035.7027,
            "name": "X",
            "position": 0,
            "stddev": 136.2904116,
            "variance": 18575.0763
          },
          {
            "average": 2249541.167,
            "count": 6323804,
            "maximum": 2249797.05,
            "minimum": 2249320.59,
            "name": "Y",
            "position": 1,
            "stddev": 127.7917132,
            "variance": 16330.72196
          },
          {
            "average": 11.33782469,
            "count": 6323804,
            "maximum": 1284.65887,
            "minimum": 10.55886977,
            "name": "Z",
            "position": 2,
            "stddev": 2.192527027,
            "variance": 4.807174764
          },
          {
            "average": 45742.11628,
            "count": 6323804,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12381.34131,
            "variance": 153297612.5
          },
          {
            "average": 1.000000158,
            "count": 6323804,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0003976589849,
            "variance": 1.581326682e-07
          },
          {
            "average": 1.000000316,
            "count": 6323804,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0005623746851,
            "variance": 3.162652865e-07
          },
          {
            "average": 0.503044212,
            "count": 6323804,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999907722,
            "variance": 0.2499907723
          },
          {
            "average": 0.0002977638143,
            "count": 6323804,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0172532663,
            "variance": 0.0002976751981
          },
          {
            "average": 1.15021038,
            "count": 6323804,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3576473676,
            "variance": 0.1279116396
          },
          {
            "average": -0.2899186016,
            "count": 6323804,
            "maximum": 20.44799995,
            "minimum": -19.96800041,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63873476,
            "variance": 113.1826774
          },
          {
            "average": 0.5181117252,
            "count": 6323804,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996718972,
            "variance": 0.2496720049
          },
          {
            "average": 322.2318751,
            "count": 6323804,
            "maximum": 363,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.86403303,
            "variance": 618.2201385
          },
          {
            "average": 216315742.7,
            "count": 6323804,
            "maximum": 216321157.4,
            "minimum": 216313451.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2774.758517,
            "variance": 7699284.825
          },
          {
            "average": 0.5181117252,
            "count": 6323804,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996718972,
            "variance": 0.2496720049
          },
          {
            "average": 0,
            "count": 6323804,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6323804,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6323804,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1676413437,
            "count": 6323804,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3735475146,
            "variance": 0.1395377457
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          115035.7027,
          2249320.59,
          10.55886977,
          115528.1627,
          2249797.05,
          1284.65887
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                115035.70271734006,
                2249320.58952108,
                10.558869770034221
              ],
              [
                115035.70271734006,
                2249797.0495210798,
                10.558869770034221
              ],
              [
                115528.16271734005,
                2249797.0495210798,
                1284.6588697700345
              ],
              [
                115528.16271734005,
                2249320.58952108,
                1284.6588697700345
              ],
              [
                115035.70271734006,
                2249320.58952108,
                10.558869770034221
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:17+00:00",
        "end_time": "2018-07-22T16:50:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1012.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1012.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1012.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1012.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0116049,
            70.19956127,
            10.55886977,
            -150.99827,
            70.20410773,
            1284.65887
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01160485163177,
                  70.1997638632447,
                  10.558869770034221
                ],
                [
                  -151.0110481568406,
                  70.20410772527909,
                  10.558869770034221
                ],
                [
                  -150.9982700408587,
                  70.20390508582013,
                  1284.6588697700345
                ],
                [
                  -150.99882910911398,
                  70.19956126632596,
                  1284.6588697700345
                ],
                [
                  -151.01160485163177,
                  70.1997638632447,
                  10.558869770034221
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1012.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1012.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:17Z",
            "pc:count": 6323804,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115288.3458,
                "count": 6323804,
                "maximum": 115528.1627,
                "minimum": 115035.7027,
                "name": "X",
                "position": 0,
                "stddev": 136.2904116,
                "variance": 18575.0763
              },
              {
                "average": 2249541.167,
                "count": 6323804,
                "maximum": 2249797.05,
                "minimum": 2249320.59,
                "name": "Y",
                "position": 1,
                "stddev": 127.7917132,
                "variance": 16330.72196
              },
              {
                "average": 11.33782469,
                "count": 6323804,
                "maximum": 1284.65887,
                "minimum": 10.55886977,
                "name": "Z",
                "position": 2,
                "stddev": 2.192527027,
                "variance": 4.807174764
              },
              {
                "average": 45742.11628,
                "count": 6323804,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12381.34131,
                "variance": 153297612.5
              },
              {
                "average": 1.000000158,
                "count": 6323804,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0003976589849,
                "variance": 1.581326682e-07
              },
              {
                "average": 1.000000316,
                "count": 6323804,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0005623746851,
                "variance": 3.162652865e-07
              },
              {
                "average": 0.503044212,
                "count": 6323804,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999907722,
                "variance": 0.2499907723
              },
              {
                "average": 0.0002977638143,
                "count": 6323804,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0172532663,
                "variance": 0.0002976751981
              },
              {
                "average": 1.15021038,
                "count": 6323804,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3576473676,
                "variance": 0.1279116396
              },
              {
                "average": -0.2899186016,
                "count": 6323804,
                "maximum": 20.44799995,
                "minimum": -19.96800041,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63873476,
                "variance": 113.1826774
              },
              {
                "average": 0.5181117252,
                "count": 6323804,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996718972,
                "variance": 0.2496720049
              },
              {
                "average": 322.2318751,
                "count": 6323804,
                "maximum": 363,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.86403303,
                "variance": 618.2201385
              },
              {
                "average": 216315742.7,
                "count": 6323804,
                "maximum": 216321157.4,
                "minimum": 216313451.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2774.758517,
                "variance": 7699284.825
              },
              {
                "average": 0.5181117252,
                "count": 6323804,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996718972,
                "variance": 0.2496720049
              },
              {
                "average": 0,
                "count": 6323804,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6323804,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6323804,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1676413437,
                "count": 6323804,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3735475146,
                "variance": 0.1395377457
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              115035.7027,
              2249320.59,
              10.55886977,
              115528.1627,
              2249797.05,
              1284.65887
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    115035.70271734006,
                    2249320.58952108,
                    10.558869770034221
                  ],
                  [
                    115035.70271734006,
                    2249797.0495210798,
                    10.558869770034221
                  ],
                  [
                    115528.16271734005,
                    2249797.0495210798,
                    1284.6588697700345
                  ],
                  [
                    115528.16271734005,
                    2249320.58952108,
                    1284.6588697700345
                  ],
                  [
                    115035.70271734006,
                    2249320.58952108,
                    10.558869770034221
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:17+00:00",
            "end_time": "2018-07-22T16:50:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1157.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.01220899225322,
              70.21205719630709,
              -5.176527016126443
            ],
            [
              -151.01165213993013,
              70.21640117086366,
              -5.176527016126443
            ],
            [
              -150.998866764193,
              70.21619855008785,
              1266.1434729838734
            ],
            [
              -150.99942599248337,
              70.21185461809748,
              1266.1434729838734
            ],
            [
              -151.01220899225322,
              70.21205719630709,
              -5.176527016126443
            ]
          ]
        ]
      },
      "bbox": [
        -151.012209,
        70.21185462,
        -5.176527016,
        -150.9988668,
        70.21640117,
        1266.143473
      ],
      "properties": {
        "datetime": "2018-07-22T18:08:17Z",
        "pc:count": 4825903,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 115199.8547,
            "count": 4825903,
            "maximum": 115444.3619,
            "minimum": 114951.8819,
            "name": "X",
            "position": 0,
            "stddev": 136.1635661,
            "variance": 18540.51674
          },
          {
            "average": 2250896.725,
            "count": 4825903,
            "maximum": 2251141.63,
            "minimum": 2250665.19,
            "name": "Y",
            "position": 1,
            "stddev": 128.1276314,
            "variance": 16416.68994
          },
          {
            "average": 12.44049604,
            "count": 4825903,
            "maximum": 1266.143473,
            "minimum": -5.176527016,
            "name": "Z",
            "position": 2,
            "stddev": 2.5640385,
            "variance": 6.574293429
          },
          {
            "average": 45927.16358,
            "count": 4825903,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12785.9292,
            "variance": 163479985.5
          },
          {
            "average": 1.009840853,
            "count": 4825903,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1009637019,
            "variance": 0.01019366909
          },
          {
            "average": 1.019683156,
            "count": 4825903,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1436739959,
            "variance": 0.02064221709
          },
          {
            "average": 0.5000863051,
            "count": 4825903,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000444,
            "variance": 0.2500000444
          },
          {
            "average": 0.0003487430228,
            "count": 4825903,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01867140791,
            "variance": 0.0003486214734
          },
          {
            "average": 1.349069387,
            "count": 4825903,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.92854421,
            "variance": 0.86219435
          },
          {
            "average": 1.799146155,
            "count": 4825903,
            "maximum": 20.52000046,
            "minimum": -16.99799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.84418245,
            "variance": 117.596293
          },
          {
            "average": 0.5305286907,
            "count": 4825903,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990671805,
            "variance": 0.2490680507
          },
          {
            "average": 321.5910318,
            "count": 4825903,
            "maximum": 359,
            "minimum": 304,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.21802761,
            "variance": 586.5128613
          },
          {
            "average": 216315024.5,
            "count": 4825903,
            "maximum": 216318097.4,
            "minimum": 216313475.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1844.025927,
            "variance": 3400431.619
          },
          {
            "average": 0.5305286907,
            "count": 4825903,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990671805,
            "variance": 0.2490680507
          },
          {
            "average": 0,
            "count": 4825903,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4825903,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4825903,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1975383674,
            "count": 4825903,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3981419265,
            "variance": 0.1585169937
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114951.8819,
          2250665.19,
          -5.176527016,
          115444.3619,
          2251141.63,
          1266.143473
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114951.88187695727,
                2250665.1897385316,
                -5.176527016126443
              ],
              [
                114951.88187695727,
                2251141.629738532,
                -5.176527016126443
              ],
              [
                115444.36187695728,
                2251141.629738532,
                1266.1434729838734
              ],
              [
                115444.36187695728,
                2250665.1897385316,
                1266.1434729838734
              ],
              [
                114951.88187695727,
                2250665.1897385316,
                -5.176527016126443
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:08:17+00:00",
        "end_time": "2018-07-22T16:51:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1157.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1157.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1157.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1157.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.012209,
            70.21185462,
            -5.176527016,
            -150.9988668,
            70.21640117,
            1266.143473
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.01220899225322,
                  70.21205719630709,
                  -5.176527016126443
                ],
                [
                  -151.01165213993013,
                  70.21640117086366,
                  -5.176527016126443
                ],
                [
                  -150.998866764193,
                  70.21619855008785,
                  1266.1434729838734
                ],
                [
                  -150.99942599248337,
                  70.21185461809748,
                  1266.1434729838734
                ],
                [
                  -151.01220899225322,
                  70.21205719630709,
                  -5.176527016126443
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1157.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1157.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:08:17Z",
            "pc:count": 4825903,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 115199.8547,
                "count": 4825903,
                "maximum": 115444.3619,
                "minimum": 114951.8819,
                "name": "X",
                "position": 0,
                "stddev": 136.1635661,
                "variance": 18540.51674
              },
              {
                "average": 2250896.725,
                "count": 4825903,
                "maximum": 2251141.63,
                "minimum": 2250665.19,
                "name": "Y",
                "position": 1,
                "stddev": 128.1276314,
                "variance": 16416.68994
              },
              {
                "average": 12.44049604,
                "count": 4825903,
                "maximum": 1266.143473,
                "minimum": -5.176527016,
                "name": "Z",
                "position": 2,
                "stddev": 2.5640385,
                "variance": 6.574293429
              },
              {
                "average": 45927.16358,
                "count": 4825903,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12785.9292,
                "variance": 163479985.5
              },
              {
                "average": 1.009840853,
                "count": 4825903,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1009637019,
                "variance": 0.01019366909
              },
              {
                "average": 1.019683156,
                "count": 4825903,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1436739959,
                "variance": 0.02064221709
              },
              {
                "average": 0.5000863051,
                "count": 4825903,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000444,
                "variance": 0.2500000444
              },
              {
                "average": 0.0003487430228,
                "count": 4825903,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01867140791,
                "variance": 0.0003486214734
              },
              {
                "average": 1.349069387,
                "count": 4825903,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.92854421,
                "variance": 0.86219435
              },
              {
                "average": 1.799146155,
                "count": 4825903,
                "maximum": 20.52000046,
                "minimum": -16.99799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.84418245,
                "variance": 117.596293
              },
              {
                "average": 0.5305286907,
                "count": 4825903,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990671805,
                "variance": 0.2490680507
              },
              {
                "average": 321.5910318,
                "count": 4825903,
                "maximum": 359,
                "minimum": 304,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.21802761,
                "variance": 586.5128613
              },
              {
                "average": 216315024.5,
                "count": 4825903,
                "maximum": 216318097.4,
                "minimum": 216313475.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1844.025927,
                "variance": 3400431.619
              },
              {
                "average": 0.5305286907,
                "count": 4825903,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990671805,
                "variance": 0.2490680507
              },
              {
                "average": 0,
                "count": 4825903,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4825903,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4825903,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1975383674,
                "count": 4825903,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3981419265,
                "variance": 0.1585169937
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114951.8819,
              2250665.19,
              -5.176527016,
              115444.3619,
              2251141.63,
              1266.143473
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114951.88187695727,
                    2250665.1897385316,
                    -5.176527016126443
                  ],
                  [
                    114951.88187695727,
                    2251141.629738532,
                    -5.176527016126443
                  ],
                  [
                    115444.36187695728,
                    2251141.629738532,
                    1266.1434729838734
                  ],
                  [
                    115444.36187695728,
                    2250665.1897385316,
                    1266.1434729838734
                  ],
                  [
                    114951.88187695727,
                    2250665.1897385316,
                    -5.176527016126443
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:08:17+00:00",
            "end_time": "2018-07-22T16:51:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1054.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.0238982057108,
              70.20379322853123,
              6.162659565254899
            ],
            [
              -151.02334379682495,
              70.20813649330847,
              6.162659565254899
            ],
            [
              -151.01056232942824,
              70.20793466414143,
              1283.782659565255
            ],
            [
              -151.01111911247156,
              70.2035914417379,
              1283.782659565255
            ],
            [
              -151.0238982057108,
              70.20379322853123,
              6.162659565254899
            ]
          ]
        ]
      },
      "bbox": [
        -151.0238982,
        70.20359144,
        6.162659565,
        -151.0105623,
        70.20813649,
        1283.78266
      ],
      "properties": {
        "datetime": "2018-07-22T18:43:59Z",
        "pc:count": 5364449,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114782.5327,
            "count": 5364449,
            "maximum": 115035.5189,
            "minimum": 114543.0189,
            "name": "X",
            "position": 0,
            "stddev": 137.2914443,
            "variance": 18848.94067
          },
          {
            "average": 2249977.243,
            "count": 5364449,
            "maximum": 2250216.793,
            "minimum": 2249740.413,
            "name": "Y",
            "position": 1,
            "stddev": 126.5920127,
            "variance": 16025.53769
          },
          {
            "average": 10.19918762,
            "count": 5364449,
            "maximum": 1283.78266,
            "minimum": 6.162659565,
            "name": "Z",
            "position": 2,
            "stddev": 2.102190278,
            "variance": 4.419203966
          },
          {
            "average": 51445.96671,
            "count": 5364449,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9788.660369,
            "variance": 95817871.83
          },
          {
            "average": 1.000000559,
            "count": 5364449,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007478215671,
            "variance": 5.592370962e-07
          },
          {
            "average": 1.000001118,
            "count": 5364449,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001057579107,
            "variance": 1.118473567e-06
          },
          {
            "average": 0.4985988309,
            "count": 5364449,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999980833,
            "variance": 0.2499980833
          },
          {
            "average": 0.0004908239411,
            "count": 5364449,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02214911114,
            "variance": 0.0004905831244
          },
          {
            "average": 1.181191955,
            "count": 5364449,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3881719289,
            "variance": 0.1506774464
          },
          {
            "average": 1.06732651,
            "count": 5364449,
            "maximum": 20.45999908,
            "minimum": -19.95599937,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.53689037,
            "variance": 133.0998394
          },
          {
            "average": 0.485653233,
            "count": 5364449,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997941745,
            "variance": 0.2497942168
          },
          {
            "average": 322.4895446,
            "count": 5364449,
            "maximum": 361,
            "minimum": 305,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.82287308,
            "variance": 567.529282
          },
          {
            "average": 216315597.3,
            "count": 5364449,
            "maximum": 216320239.1,
            "minimum": 216313719,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2221.605794,
            "variance": 4935532.306
          },
          {
            "average": 0.485653233,
            "count": 5364449,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997941745,
            "variance": 0.2497942168
          },
          {
            "average": 0,
            "count": 5364449,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5364449,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5364449,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2392527173,
            "count": 5364449,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4266273415,
            "variance": 0.1820108885
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114543.0189,
          2249740.413,
          6.162659565,
          115035.5189,
          2250216.793,
          1283.78266
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114543.01885847287,
                2249740.4128501727,
                6.162659565254899
              ],
              [
                114543.01885847287,
                2250216.7928501726,
                6.162659565254899
              ],
              [
                115035.51885847287,
                2250216.7928501726,
                1283.782659565255
              ],
              [
                115035.51885847287,
                2249740.4128501727,
                1283.782659565255
              ],
              [
                114543.01885847287,
                2249740.4128501727,
                6.162659565254899
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:43:59+00:00",
        "end_time": "2018-07-22T16:55:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1054.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1054.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1054.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1054.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0238982,
            70.20359144,
            6.162659565,
            -151.0105623,
            70.20813649,
            1283.78266
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.0238982057108,
                  70.20379322853123,
                  6.162659565254899
                ],
                [
                  -151.02334379682495,
                  70.20813649330847,
                  6.162659565254899
                ],
                [
                  -151.01056232942824,
                  70.20793466414143,
                  1283.782659565255
                ],
                [
                  -151.01111911247156,
                  70.2035914417379,
                  1283.782659565255
                ],
                [
                  -151.0238982057108,
                  70.20379322853123,
                  6.162659565254899
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1054.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1054.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:43:59Z",
            "pc:count": 5364449,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114782.5327,
                "count": 5364449,
                "maximum": 115035.5189,
                "minimum": 114543.0189,
                "name": "X",
                "position": 0,
                "stddev": 137.2914443,
                "variance": 18848.94067
              },
              {
                "average": 2249977.243,
                "count": 5364449,
                "maximum": 2250216.793,
                "minimum": 2249740.413,
                "name": "Y",
                "position": 1,
                "stddev": 126.5920127,
                "variance": 16025.53769
              },
              {
                "average": 10.19918762,
                "count": 5364449,
                "maximum": 1283.78266,
                "minimum": 6.162659565,
                "name": "Z",
                "position": 2,
                "stddev": 2.102190278,
                "variance": 4.419203966
              },
              {
                "average": 51445.96671,
                "count": 5364449,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9788.660369,
                "variance": 95817871.83
              },
              {
                "average": 1.000000559,
                "count": 5364449,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007478215671,
                "variance": 5.592370962e-07
              },
              {
                "average": 1.000001118,
                "count": 5364449,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001057579107,
                "variance": 1.118473567e-06
              },
              {
                "average": 0.4985988309,
                "count": 5364449,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999980833,
                "variance": 0.2499980833
              },
              {
                "average": 0.0004908239411,
                "count": 5364449,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02214911114,
                "variance": 0.0004905831244
              },
              {
                "average": 1.181191955,
                "count": 5364449,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3881719289,
                "variance": 0.1506774464
              },
              {
                "average": 1.06732651,
                "count": 5364449,
                "maximum": 20.45999908,
                "minimum": -19.95599937,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.53689037,
                "variance": 133.0998394
              },
              {
                "average": 0.485653233,
                "count": 5364449,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997941745,
                "variance": 0.2497942168
              },
              {
                "average": 322.4895446,
                "count": 5364449,
                "maximum": 361,
                "minimum": 305,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.82287308,
                "variance": 567.529282
              },
              {
                "average": 216315597.3,
                "count": 5364449,
                "maximum": 216320239.1,
                "minimum": 216313719,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2221.605794,
                "variance": 4935532.306
              },
              {
                "average": 0.485653233,
                "count": 5364449,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997941745,
                "variance": 0.2497942168
              },
              {
                "average": 0,
                "count": 5364449,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5364449,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5364449,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2392527173,
                "count": 5364449,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4266273415,
                "variance": 0.1820108885
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114543.0189,
              2249740.413,
              6.162659565,
              115035.5189,
              2250216.793,
              1283.78266
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114543.01885847287,
                    2249740.4128501727,
                    6.162659565254899
                  ],
                  [
                    114543.01885847287,
                    2250216.7928501726,
                    6.162659565254899
                  ],
                  [
                    115035.51885847287,
                    2250216.7928501726,
                    1283.782659565255
                  ],
                  [
                    115035.51885847287,
                    2249740.4128501727,
                    1283.782659565255
                  ],
                  [
                    114543.01885847287,
                    2249740.4128501727,
                    6.162659565254899
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:43:59+00:00",
            "end_time": "2018-07-22T16:55:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180722_B18_NSB4_1010.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.03578266928488,
              70.19962574294523,
              9.468534617788691
            ],
            [
              -151.03523045555158,
              70.20396985497123,
              9.468534617788691
            ],
            [
              -151.02245168651547,
              70.20376884235192,
              1284.8885346177888
            ],
            [
              -151.02300627403673,
              70.19942477252671,
              1284.8885346177888
            ],
            [
              -151.03578266928488,
              70.19962574294523,
              9.468534617788691
            ]
          ]
        ]
      },
      "bbox": [
        -151.0357827,
        70.19942477,
        9.468534618,
        -151.0224517,
        70.20396985,
        1284.888535
      ],
      "properties": {
        "datetime": "2018-07-22T18:59:02Z",
        "pc:count": 5884600,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 114355.4889,
            "count": 5884600,
            "maximum": 114598.7744,
            "minimum": 114106.2944,
            "name": "X",
            "position": 0,
            "stddev": 130.0436688,
            "variance": 16911.35579
          },
          {
            "average": 2249499.263,
            "count": 5884600,
            "maximum": 2249740.239,
            "minimum": 2249263.759,
            "name": "Y",
            "position": 1,
            "stddev": 126.9528291,
            "variance": 16117.02081
          },
          {
            "average": 10.98339793,
            "count": 5884600,
            "maximum": 1284.888535,
            "minimum": 9.468534618,
            "name": "Z",
            "position": 2,
            "stddev": 4.581627988,
            "variance": 20.99131502
          },
          {
            "average": 48276.6938,
            "count": 5884600,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14121.73409,
            "variance": 199423373.8
          },
          {
            "average": 1.00000034,
            "count": 5884600,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005829838007,
            "variance": 3.398701118e-07
          },
          {
            "average": 1.00000068,
            "count": 5884600,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008244634574,
            "variance": 6.797399927e-07
          },
          {
            "average": 0.5018422663,
            "count": 5884600,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999966485,
            "variance": 0.2499966485
          },
          {
            "average": 0.0003084321789,
            "count": 5884600,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0175595302,
            "variance": 0.0003083371009
          },
          {
            "average": 1.808397172,
            "count": 5884600,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.214143482,
            "variance": 4.902431357
          },
          {
            "average": -0.08242958234,
            "count": 5884600,
            "maximum": 20.4659996,
            "minimum": -20.06999969,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.941191738,
            "variance": 98.82729317
          },
          {
            "average": 0.4993083642,
            "count": 5884600,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999995641,
            "variance": 0.2499995641
          },
          {
            "average": 323.1268922,
            "count": 5884600,
            "maximum": 363,
            "minimum": 306,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.63842692,
            "variance": 558.775227
          },
          {
            "average": 216315994.8,
            "count": 5884600,
            "maximum": 216321142.7,
            "minimum": 216313901.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2512.09114,
            "variance": 6310601.895
          },
          {
            "average": 0.4993083642,
            "count": 5884600,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999995641,
            "variance": 0.2499995641
          },
          {
            "average": 0,
            "count": 5884600,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5884600,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5884600,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1442663902,
            "count": 5884600,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3513596731,
            "variance": 0.1234536199
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          114106.2944,
          2249263.759,
          9.468534618,
          114598.7744,
          2249740.239,
          1284.888535
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                114106.29437498114,
                2249263.7589548053,
                9.468534617788691
              ],
              [
                114106.29437498114,
                2249740.238954806,
                9.468534617788691
              ],
              [
                114598.77437498115,
                2249740.238954806,
                1284.8885346177888
              ],
              [
                114598.77437498115,
                2249263.7589548053,
                1284.8885346177888
              ],
              [
                114106.29437498114,
                2249263.7589548053,
                9.468534617788691
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-22T18:59:02+00:00",
        "end_time": "2018-07-22T16:58:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_2/20180722_B18_NSB4_1010.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180722_B18_NSB4_1010.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_2/20180722_B18_NSB4_1010.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1010.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.0357827,
            70.19942477,
            9.468534618,
            -151.0224517,
            70.20396985,
            1284.888535
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.03578266928488,
                  70.19962574294523,
                  9.468534617788691
                ],
                [
                  -151.03523045555158,
                  70.20396985497123,
                  9.468534617788691
                ],
                [
                  -151.02245168651547,
                  70.20376884235192,
                  1284.8885346177888
                ],
                [
                  -151.02300627403673,
                  70.19942477252671,
                  1284.8885346177888
                ],
                [
                  -151.03578266928488,
                  70.19962574294523,
                  9.468534617788691
                ]
              ]
            ]
          },
          "id": "20180722_B18_NSB4_1010.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_2/20180722_B18_NSB4_1010.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-22T18:59:02Z",
            "pc:count": 5884600,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 114355.4889,
                "count": 5884600,
                "maximum": 114598.7744,
                "minimum": 114106.2944,
                "name": "X",
                "position": 0,
                "stddev": 130.0436688,
                "variance": 16911.35579
              },
              {
                "average": 2249499.263,
                "count": 5884600,
                "maximum": 2249740.239,
                "minimum": 2249263.759,
                "name": "Y",
                "position": 1,
                "stddev": 126.9528291,
                "variance": 16117.02081
              },
              {
                "average": 10.98339793,
                "count": 5884600,
                "maximum": 1284.888535,
                "minimum": 9.468534618,
                "name": "Z",
                "position": 2,
                "stddev": 4.581627988,
                "variance": 20.99131502
              },
              {
                "average": 48276.6938,
                "count": 5884600,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14121.73409,
                "variance": 199423373.8
              },
              {
                "average": 1.00000034,
                "count": 5884600,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005829838007,
                "variance": 3.398701118e-07
              },
              {
                "average": 1.00000068,
                "count": 5884600,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008244634574,
                "variance": 6.797399927e-07
              },
              {
                "average": 0.5018422663,
                "count": 5884600,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999966485,
                "variance": 0.2499966485
              },
              {
                "average": 0.0003084321789,
                "count": 5884600,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0175595302,
                "variance": 0.0003083371009
              },
              {
                "average": 1.808397172,
                "count": 5884600,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.214143482,
                "variance": 4.902431357
              },
              {
                "average": -0.08242958234,
                "count": 5884600,
                "maximum": 20.4659996,
                "minimum": -20.06999969,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.941191738,
                "variance": 98.82729317
              },
              {
                "average": 0.4993083642,
                "count": 5884600,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999995641,
                "variance": 0.2499995641
              },
              {
                "average": 323.1268922,
                "count": 5884600,
                "maximum": 363,
                "minimum": 306,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.63842692,
                "variance": 558.775227
              },
              {
                "average": 216315994.8,
                "count": 5884600,
                "maximum": 216321142.7,
                "minimum": 216313901.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2512.09114,
                "variance": 6310601.895
              },
              {
                "average": 0.4993083642,
                "count": 5884600,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999995641,
                "variance": 0.2499995641
              },
              {
                "average": 0,
                "count": 5884600,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5884600,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5884600,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1442663902,
                "count": 5884600,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3513596731,
                "variance": 0.1234536199
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              114106.2944,
              2249263.759,
              9.468534618,
              114598.7744,
              2249740.239,
              1284.888535
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    114106.29437498114,
                    2249263.7589548053,
                    9.468534617788691
                  ],
                  [
                    114106.29437498114,
                    2249740.238954806,
                    9.468534617788691
                  ],
                  [
                    114598.77437498115,
                    2249740.238954806,
                    1284.8885346177888
                  ],
                  [
                    114598.77437498115,
                    2249263.7589548053,
                    1284.8885346177888
                  ],
                  [
                    114106.29437498114,
                    2249263.7589548053,
                    9.468534617788691
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-22T18:59:02+00:00",
            "end_time": "2018-07-22T16:58:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000302.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70126141352782,
              68.13618687038503,
              708.4018963791391
            ],
            [
              -151.70086450694205,
              68.14053158699424,
              708.4018963791391
            ],
            [
              -151.68921983074847,
              68.14037832835308,
              772.9018963791391
            ],
            [
              -151.68961874435212,
              68.13603364059828,
              772.9018963791391
            ],
            [
              -151.70126141352782,
              68.13618687038503,
              708.4018963791391
            ]
          ]
        ]
      },
      "bbox": [
        -151.7012614,
        68.13603364,
        708.4018964,
        -151.6892198,
        68.14053159,
        772.9018964
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:22Z",
        "pc:count": 4832056,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96608.48549,
            "count": 4832056,
            "maximum": 96852.8214,
            "minimum": 96364.3614,
            "name": "X",
            "position": 0,
            "stddev": 131.0860739,
            "variance": 17183.55876
          },
          {
            "average": 2021392.711,
            "count": 4832056,
            "maximum": 2021636.853,
            "minimum": 2021156.053,
            "name": "Y",
            "position": 1,
            "stddev": 130.3025783,
            "variance": 16978.76192
          },
          {
            "average": 734.9225443,
            "count": 4832056,
            "maximum": 772.9018964,
            "minimum": 708.4018964,
            "name": "Z",
            "position": 2,
            "stddev": 12.66104402,
            "variance": 160.3020357
          },
          {
            "average": 48597.37926,
            "count": 4832056,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9486.570063,
            "variance": 89995011.56
          },
          {
            "average": 1.000425078,
            "count": 4832056,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02073316384,
            "variance": 0.0004298640827
          },
          {
            "average": 1.0008485,
            "count": 4832056,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02937142856,
            "variance": 0.0008626808158
          },
          {
            "average": 0.4929829042,
            "count": 4832056,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999508097,
            "variance": 0.2499508121
          },
          {
            "average": 0.0003586465058,
            "count": 4832056,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0189345703,
            "variance": 0.0003585179526
          },
          {
            "average": 1.260937994,
            "count": 4832056,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5145527723,
            "variance": 0.2647645555
          },
          {
            "average": 0.9436919868,
            "count": 4832056,
            "maximum": 21.43799973,
            "minimum": -20.84399986,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.7648881,
            "variance": 115.8828158
          },
          {
            "average": 0.4795076878,
            "count": 4832056,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995799403,
            "variance": 0.2495801168
          },
          {
            "average": 417.7318355,
            "count": 4832056,
            "maximum": 630,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.1923489,
            "variance": 13969.43134
          },
          {
            "average": 249235189.1,
            "count": 4832056,
            "maximum": 249242022.5,
            "minimum": 249232934.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3574.571112,
            "variance": 12777558.64
          },
          {
            "average": 0.4795076878,
            "count": 4832056,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995799403,
            "variance": 0.2495801168
          },
          {
            "average": 0,
            "count": 4832056,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4832056,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4832056,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1654664184,
            "count": 4832056,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.371601011,
            "variance": 0.1380873114
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96364.3614,
          2021156.053,
          708.4018964,
          96852.8214,
          2021636.853,
          772.9018964
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96364.3614030948,
                2021156.0526473382,
                708.4018963791391
              ],
              [
                96364.3614030948,
                2021636.852647338,
                708.4018963791391
              ],
              [
                96852.82140309479,
                2021636.852647338,
                772.9018963791391
              ],
              [
                96852.82140309479,
                2021156.0526473382,
                772.9018963791391
              ],
              [
                96364.3614030948,
                2021156.0526473382,
                708.4018963791391
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:22+00:00",
        "end_time": "2019-08-07T17:08:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000302.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000302.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000302.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000302.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7012614,
            68.13603364,
            708.4018964,
            -151.6892198,
            68.14053159,
            772.9018964
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70126141352782,
                  68.13618687038503,
                  708.4018963791391
                ],
                [
                  -151.70086450694205,
                  68.14053158699424,
                  708.4018963791391
                ],
                [
                  -151.68921983074847,
                  68.14037832835308,
                  772.9018963791391
                ],
                [
                  -151.68961874435212,
                  68.13603364059828,
                  772.9018963791391
                ],
                [
                  -151.70126141352782,
                  68.13618687038503,
                  708.4018963791391
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000302.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000302.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:22Z",
            "pc:count": 4832056,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96608.48549,
                "count": 4832056,
                "maximum": 96852.8214,
                "minimum": 96364.3614,
                "name": "X",
                "position": 0,
                "stddev": 131.0860739,
                "variance": 17183.55876
              },
              {
                "average": 2021392.711,
                "count": 4832056,
                "maximum": 2021636.853,
                "minimum": 2021156.053,
                "name": "Y",
                "position": 1,
                "stddev": 130.3025783,
                "variance": 16978.76192
              },
              {
                "average": 734.9225443,
                "count": 4832056,
                "maximum": 772.9018964,
                "minimum": 708.4018964,
                "name": "Z",
                "position": 2,
                "stddev": 12.66104402,
                "variance": 160.3020357
              },
              {
                "average": 48597.37926,
                "count": 4832056,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9486.570063,
                "variance": 89995011.56
              },
              {
                "average": 1.000425078,
                "count": 4832056,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02073316384,
                "variance": 0.0004298640827
              },
              {
                "average": 1.0008485,
                "count": 4832056,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02937142856,
                "variance": 0.0008626808158
              },
              {
                "average": 0.4929829042,
                "count": 4832056,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999508097,
                "variance": 0.2499508121
              },
              {
                "average": 0.0003586465058,
                "count": 4832056,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0189345703,
                "variance": 0.0003585179526
              },
              {
                "average": 1.260937994,
                "count": 4832056,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5145527723,
                "variance": 0.2647645555
              },
              {
                "average": 0.9436919868,
                "count": 4832056,
                "maximum": 21.43799973,
                "minimum": -20.84399986,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.7648881,
                "variance": 115.8828158
              },
              {
                "average": 0.4795076878,
                "count": 4832056,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995799403,
                "variance": 0.2495801168
              },
              {
                "average": 417.7318355,
                "count": 4832056,
                "maximum": 630,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.1923489,
                "variance": 13969.43134
              },
              {
                "average": 249235189.1,
                "count": 4832056,
                "maximum": 249242022.5,
                "minimum": 249232934.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3574.571112,
                "variance": 12777558.64
              },
              {
                "average": 0.4795076878,
                "count": 4832056,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995799403,
                "variance": 0.2495801168
              },
              {
                "average": 0,
                "count": 4832056,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4832056,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4832056,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1654664184,
                "count": 4832056,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.371601011,
                "variance": 0.1380873114
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96364.3614,
              2021156.053,
              708.4018964,
              96852.8214,
              2021636.853,
              772.9018964
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96364.3614030948,
                    2021156.0526473382,
                    708.4018963791391
                  ],
                  [
                    96364.3614030948,
                    2021636.852647338,
                    708.4018963791391
                  ],
                  [
                    96852.82140309479,
                    2021636.852647338,
                    772.9018963791391
                  ],
                  [
                    96852.82140309479,
                    2021156.0526473382,
                    772.9018963791391
                  ],
                  [
                    96364.3614030948,
                    2021156.0526473382,
                    708.4018963791391
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:22+00:00",
            "end_time": "2019-08-07T17:08:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000374.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76816354848432,
              68.14778871897119,
              668.0505763127514
            ],
            [
              -151.76777804338525,
              68.15213340600975,
              668.0505763127514
            ],
            [
              -151.7561275954007,
              68.15198458835037,
              704.7505763127515
            ],
            [
              -151.7565151094793,
              68.14763992934645,
              704.7505763127515
            ],
            [
              -151.76816354848432,
              68.14778871897119,
              668.0505763127514
            ]
          ]
        ]
      },
      "bbox": [
        -151.7681635,
        68.14763993,
        668.0505763,
        -151.7561276,
        68.15213341,
        704.7505763
      ],
      "properties": {
        "datetime": "2019-08-07T20:08:32Z",
        "pc:count": 4614094,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93758.17822,
            "count": 4614094,
            "maximum": 94006.20693,
            "minimum": 93517.74693,
            "name": "X",
            "position": 0,
            "stddev": 130.254472,
            "variance": 16966.22746
          },
          {
            "average": 2022586.019,
            "count": 4614094,
            "maximum": 2022823.534,
            "minimum": 2022342.774,
            "name": "Y",
            "position": 1,
            "stddev": 130.5143812,
            "variance": 17034.0037
          },
          {
            "average": 678.7325893,
            "count": 4614094,
            "maximum": 704.7505763,
            "minimum": 668.0505763,
            "name": "Z",
            "position": 2,
            "stddev": 7.341677409,
            "variance": 53.90022717
          },
          {
            "average": 50443.85848,
            "count": 4614094,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10547.32788,
            "variance": 111246125.3
          },
          {
            "average": 1.001976553,
            "count": 4614094,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04447300116,
            "variance": 0.001977847833
          },
          {
            "average": 1.003953972,
            "count": 4614094,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06288039164,
            "variance": 0.003953943652
          },
          {
            "average": 0.5045289498,
            "count": 4614094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999795424,
            "variance": 0.2499795428
          },
          {
            "average": 0.0004085309055,
            "count": 4614094,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0202080206,
            "variance": 0.0004083640965
          },
          {
            "average": 1.31396933,
            "count": 4614094,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5562691683,
            "variance": 0.3094353876
          },
          {
            "average": -3.61942817,
            "count": 4614094,
            "maximum": 21.68400002,
            "minimum": -21.11400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43492109,
            "variance": 108.8875782
          },
          {
            "average": 0.494881552,
            "count": 4614094,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499973855,
            "variance": 0.2499738557
          },
          {
            "average": 423.7680099,
            "count": 4614094,
            "maximum": 635,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 116.0565797,
            "variance": 13469.1297
          },
          {
            "average": 249236546.3,
            "count": 4614094,
            "maximum": 249243712.1,
            "minimum": 249234232.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3691.404751,
            "variance": 13626469.04
          },
          {
            "average": 0.494881552,
            "count": 4614094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499973855,
            "variance": 0.2499738557
          },
          {
            "average": 0,
            "count": 4614094,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4614094,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4614094,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1751628814,
            "count": 4614094,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3801064031,
            "variance": 0.1444808777
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93517.74693,
          2022342.774,
          668.0505763,
          94006.20693,
          2022823.534,
          704.7505763
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93517.74692901458,
                2022342.7743318938,
                668.0505763127514
              ],
              [
                93517.74692901458,
                2022823.5343318935,
                668.0505763127514
              ],
              [
                94006.20692901457,
                2022823.5343318935,
                704.7505763127515
              ],
              [
                94006.20692901457,
                2022342.7743318938,
                704.7505763127515
              ],
              [
                93517.74692901458,
                2022342.7743318938,
                668.0505763127514
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:08:32+00:00",
        "end_time": "2019-08-07T17:30:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000374.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000374.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000374.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000374.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7681635,
            68.14763993,
            668.0505763,
            -151.7561276,
            68.15213341,
            704.7505763
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76816354848432,
                  68.14778871897119,
                  668.0505763127514
                ],
                [
                  -151.76777804338525,
                  68.15213340600975,
                  668.0505763127514
                ],
                [
                  -151.7561275954007,
                  68.15198458835037,
                  704.7505763127515
                ],
                [
                  -151.7565151094793,
                  68.14763992934645,
                  704.7505763127515
                ],
                [
                  -151.76816354848432,
                  68.14778871897119,
                  668.0505763127514
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000374.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000374.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:08:32Z",
            "pc:count": 4614094,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93758.17822,
                "count": 4614094,
                "maximum": 94006.20693,
                "minimum": 93517.74693,
                "name": "X",
                "position": 0,
                "stddev": 130.254472,
                "variance": 16966.22746
              },
              {
                "average": 2022586.019,
                "count": 4614094,
                "maximum": 2022823.534,
                "minimum": 2022342.774,
                "name": "Y",
                "position": 1,
                "stddev": 130.5143812,
                "variance": 17034.0037
              },
              {
                "average": 678.7325893,
                "count": 4614094,
                "maximum": 704.7505763,
                "minimum": 668.0505763,
                "name": "Z",
                "position": 2,
                "stddev": 7.341677409,
                "variance": 53.90022717
              },
              {
                "average": 50443.85848,
                "count": 4614094,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10547.32788,
                "variance": 111246125.3
              },
              {
                "average": 1.001976553,
                "count": 4614094,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04447300116,
                "variance": 0.001977847833
              },
              {
                "average": 1.003953972,
                "count": 4614094,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06288039164,
                "variance": 0.003953943652
              },
              {
                "average": 0.5045289498,
                "count": 4614094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999795424,
                "variance": 0.2499795428
              },
              {
                "average": 0.0004085309055,
                "count": 4614094,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0202080206,
                "variance": 0.0004083640965
              },
              {
                "average": 1.31396933,
                "count": 4614094,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5562691683,
                "variance": 0.3094353876
              },
              {
                "average": -3.61942817,
                "count": 4614094,
                "maximum": 21.68400002,
                "minimum": -21.11400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43492109,
                "variance": 108.8875782
              },
              {
                "average": 0.494881552,
                "count": 4614094,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499973855,
                "variance": 0.2499738557
              },
              {
                "average": 423.7680099,
                "count": 4614094,
                "maximum": 635,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 116.0565797,
                "variance": 13469.1297
              },
              {
                "average": 249236546.3,
                "count": 4614094,
                "maximum": 249243712.1,
                "minimum": 249234232.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3691.404751,
                "variance": 13626469.04
              },
              {
                "average": 0.494881552,
                "count": 4614094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499973855,
                "variance": 0.2499738557
              },
              {
                "average": 0,
                "count": 4614094,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4614094,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4614094,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1751628814,
                "count": 4614094,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3801064031,
                "variance": 0.1444808777
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93517.74693,
              2022342.774,
              668.0505763,
              94006.20693,
              2022823.534,
              704.7505763
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93517.74692901458,
                    2022342.7743318938,
                    668.0505763127514
                  ],
                  [
                    93517.74692901458,
                    2022823.5343318935,
                    668.0505763127514
                  ],
                  [
                    94006.20692901457,
                    2022823.5343318935,
                    704.7505763127515
                  ],
                  [
                    94006.20692901457,
                    2022342.7743318938,
                    704.7505763127515
                  ],
                  [
                    93517.74692901458,
                    2022342.7743318938,
                    668.0505763127514
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:08:32+00:00",
            "end_time": "2019-08-07T17:30:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000425.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77979658076026,
              68.15586602185684,
              785.8864873253925
            ],
            [
              -151.7794129771024,
              68.16021068101176,
              785.8864873253925
            ],
            [
              -151.7677553790823,
              68.16006258970806,
              1105.0664873253925
            ],
            [
              -151.76814099354996,
              68.15571795846226,
              1105.0664873253925
            ],
            [
              -151.77979658076026,
              68.15586602185684,
              785.8864873253925
            ]
          ]
        ]
      },
      "bbox": [
        -151.7797966,
        68.15571796,
        785.8864873,
        -151.7677554,
        68.16021068,
        1105.066487
      ],
      "properties": {
        "datetime": "2019-08-18T19:03:11Z",
        "pc:count": 7287700,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93243.57959,
            "count": 7287700,
            "maximum": 93489.22725,
            "minimum": 93000.62725,
            "name": "X",
            "position": 0,
            "stddev": 134.1850274,
            "variance": 18005.62159
          },
          {
            "average": 2023458.346,
            "count": 7287700,
            "maximum": 2023699.957,
            "minimum": 2023219.217,
            "name": "Y",
            "position": 1,
            "stddev": 131.4175789,
            "variance": 17270.58004
          },
          {
            "average": 949.3430383,
            "count": 7287700,
            "maximum": 1105.066487,
            "minimum": 785.8864873,
            "name": "Z",
            "position": 2,
            "stddev": 69.56269957,
            "variance": 4838.969172
          },
          {
            "average": 39854.40823,
            "count": 7287700,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11265.17676,
            "variance": 126904207.5
          },
          {
            "average": 1.001231664,
            "count": 7287700,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03585120538,
            "variance": 0.001285308927
          },
          {
            "average": 1.002463329,
            "count": 7287700,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05121542481,
            "variance": 0.002623019738
          },
          {
            "average": 0.503717771,
            "count": 7287700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999862123,
            "variance": 0.2499862125
          },
          {
            "average": 0.0004541899365,
            "count": 7287700,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02130689349,
            "variance": 0.0004539837103
          },
          {
            "average": 1.219664229,
            "count": 7287700,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6094415818,
            "variance": 0.3714190416
          },
          {
            "average": -1.468854392,
            "count": 7287700,
            "maximum": 21.29400063,
            "minimum": -20.90999985,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.4154816,
            "variance": 130.3132202
          },
          {
            "average": 0.4997631626,
            "count": 7287700,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999782,
            "variance": 0.2499999782
          },
          {
            "average": 471.7659362,
            "count": 7287700,
            "maximum": 723,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 150.1975799,
            "variance": 22559.31299
          },
          {
            "average": 249393688.6,
            "count": 7287700,
            "maximum": 250190191.6,
            "minimum": 249234447.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 352888.1149,
            "variance": 124530021600.0
          },
          {
            "average": 0.4997631626,
            "count": 7287700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999782,
            "variance": 0.2499999782
          },
          {
            "average": 0,
            "count": 7287700,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7287700,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7287700,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2298067978,
            "count": 7287700,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4207085187,
            "variance": 0.1769956577
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93000.62725,
          2023219.217,
          785.8864873,
          93489.22725,
          2023699.957,
          1105.066487
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93000.62724756781,
                2023219.2172806482,
                785.8864873253925
              ],
              [
                93000.62724756781,
                2023699.9572806484,
                785.8864873253925
              ],
              [
                93489.22724756782,
                2023699.9572806484,
                1105.0664873253925
              ],
              [
                93489.22724756782,
                2023219.2172806482,
                1105.0664873253925
              ],
              [
                93000.62724756781,
                2023219.2172806482,
                785.8864873253925
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-18T19:03:11+00:00",
        "end_time": "2019-08-07T17:34:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000425.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000425.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000425.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000425.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7797966,
            68.15571796,
            785.8864873,
            -151.7677554,
            68.16021068,
            1105.066487
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77979658076026,
                  68.15586602185684,
                  785.8864873253925
                ],
                [
                  -151.7794129771024,
                  68.16021068101176,
                  785.8864873253925
                ],
                [
                  -151.7677553790823,
                  68.16006258970806,
                  1105.0664873253925
                ],
                [
                  -151.76814099354996,
                  68.15571795846226,
                  1105.0664873253925
                ],
                [
                  -151.77979658076026,
                  68.15586602185684,
                  785.8864873253925
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000425.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000425.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-18T19:03:11Z",
            "pc:count": 7287700,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93243.57959,
                "count": 7287700,
                "maximum": 93489.22725,
                "minimum": 93000.62725,
                "name": "X",
                "position": 0,
                "stddev": 134.1850274,
                "variance": 18005.62159
              },
              {
                "average": 2023458.346,
                "count": 7287700,
                "maximum": 2023699.957,
                "minimum": 2023219.217,
                "name": "Y",
                "position": 1,
                "stddev": 131.4175789,
                "variance": 17270.58004
              },
              {
                "average": 949.3430383,
                "count": 7287700,
                "maximum": 1105.066487,
                "minimum": 785.8864873,
                "name": "Z",
                "position": 2,
                "stddev": 69.56269957,
                "variance": 4838.969172
              },
              {
                "average": 39854.40823,
                "count": 7287700,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11265.17676,
                "variance": 126904207.5
              },
              {
                "average": 1.001231664,
                "count": 7287700,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03585120538,
                "variance": 0.001285308927
              },
              {
                "average": 1.002463329,
                "count": 7287700,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05121542481,
                "variance": 0.002623019738
              },
              {
                "average": 0.503717771,
                "count": 7287700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999862123,
                "variance": 0.2499862125
              },
              {
                "average": 0.0004541899365,
                "count": 7287700,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02130689349,
                "variance": 0.0004539837103
              },
              {
                "average": 1.219664229,
                "count": 7287700,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6094415818,
                "variance": 0.3714190416
              },
              {
                "average": -1.468854392,
                "count": 7287700,
                "maximum": 21.29400063,
                "minimum": -20.90999985,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.4154816,
                "variance": 130.3132202
              },
              {
                "average": 0.4997631626,
                "count": 7287700,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999782,
                "variance": 0.2499999782
              },
              {
                "average": 471.7659362,
                "count": 7287700,
                "maximum": 723,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 150.1975799,
                "variance": 22559.31299
              },
              {
                "average": 249393688.6,
                "count": 7287700,
                "maximum": 250190191.6,
                "minimum": 249234447.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 352888.1149,
                "variance": 124530021600.0
              },
              {
                "average": 0.4997631626,
                "count": 7287700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999782,
                "variance": 0.2499999782
              },
              {
                "average": 0,
                "count": 7287700,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7287700,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7287700,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2298067978,
                "count": 7287700,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4207085187,
                "variance": 0.1769956577
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93000.62725,
              2023219.217,
              785.8864873,
              93489.22725,
              2023699.957,
              1105.066487
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93000.62724756781,
                    2023219.2172806482,
                    785.8864873253925
                  ],
                  [
                    93000.62724756781,
                    2023699.9572806484,
                    785.8864873253925
                  ],
                  [
                    93489.22724756782,
                    2023699.9572806484,
                    1105.0664873253925
                  ],
                  [
                    93489.22724756782,
                    2023219.2172806482,
                    1105.0664873253925
                  ],
                  [
                    93000.62724756781,
                    2023219.2172806482,
                    785.8864873253925
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-18T19:03:11+00:00",
            "end_time": "2019-08-07T17:34:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000223.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7113395494903,
              68.12378070362878,
              690.4677213687294
            ],
            [
              -151.71094457699476,
              68.12812524834494,
              690.4677213687294
            ],
            [
              -151.69930557564453,
              68.12797266669763,
              749.7877213687293
            ],
            [
              -151.6997025532236,
              68.12362815068919,
              749.7877213687293
            ],
            [
              -151.7113395494903,
              68.12378070362878,
              690.4677213687294
            ]
          ]
        ]
      },
      "bbox": [
        -151.7113395,
        68.12362815,
        690.4677214,
        -151.6993056,
        68.12812525,
        749.7877214
      ],
      "properties": {
        "datetime": "2019-08-07T19:34:59Z",
        "pc:count": 5014759,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96243.93729,
            "count": 5014759,
            "maximum": 96477.78499,
            "minimum": 95989.32499,
            "name": "X",
            "position": 0,
            "stddev": 130.9204055,
            "variance": 17140.15258
          },
          {
            "average": 2020011.997,
            "count": 5014759,
            "maximum": 2020250.951,
            "minimum": 2019770.151,
            "name": "Y",
            "position": 1,
            "stddev": 130.4366268,
            "variance": 17013.71362
          },
          {
            "average": 713.4159104,
            "count": 5014759,
            "maximum": 749.7877214,
            "minimum": 690.4677214,
            "name": "Z",
            "position": 2,
            "stddev": 11.61031743,
            "variance": 134.7994708
          },
          {
            "average": 50457.7879,
            "count": 5014759,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7545.542794,
            "variance": 56935216.06
          },
          {
            "average": 1.000165511,
            "count": 5014759,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01286406166,
            "variance": 0.0001654840823
          },
          {
            "average": 1.000330624,
            "count": 5014759,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01818006649,
            "variance": 0.0003305148175
          },
          {
            "average": 0.5046429948,
            "count": 5014759,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499978492,
            "variance": 0.2499784924
          },
          {
            "average": 0.000501320203,
            "count": 5014759,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02238457015,
            "variance": 0.000501068981
          },
          {
            "average": 1.227429474,
            "count": 5014759,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4742435238,
            "variance": 0.2249069198
          },
          {
            "average": 0.5868041682,
            "count": 5014759,
            "maximum": 21.37800026,
            "minimum": -20.85000038,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.57961523,
            "variance": 134.0874889
          },
          {
            "average": 0.5096254875,
            "count": 5014759,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999073912,
            "variance": 0.2499073998
          },
          {
            "average": 437.6796177,
            "count": 5014759,
            "maximum": 629,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 126.8744319,
            "variance": 16097.12148
          },
          {
            "average": 249235769.5,
            "count": 5014759,
            "maximum": 249241699.1,
            "minimum": 249233066.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3562.206833,
            "variance": 12689317.52
          },
          {
            "average": 0.5096254875,
            "count": 5014759,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999073912,
            "variance": 0.2499073998
          },
          {
            "average": 0,
            "count": 5014759,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5014759,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5014759,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2509450604,
            "count": 5014759,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4335570026,
            "variance": 0.1879716745
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95989.32499,
          2019770.151,
          690.4677214,
          96477.78499,
          2020250.951,
          749.7877214
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95989.32498853498,
                2019770.1513047921,
                690.4677213687294
              ],
              [
                95989.32498853498,
                2020250.951304792,
                690.4677213687294
              ],
              [
                96477.78498853497,
                2020250.951304792,
                749.7877213687293
              ],
              [
                96477.78498853497,
                2019770.1513047921,
                749.7877213687293
              ],
              [
                95989.32498853498,
                2019770.1513047921,
                690.4677213687294
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:34:59+00:00",
        "end_time": "2019-08-07T17:11:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000223.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000223.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000223.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000223.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7113395,
            68.12362815,
            690.4677214,
            -151.6993056,
            68.12812525,
            749.7877214
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7113395494903,
                  68.12378070362878,
                  690.4677213687294
                ],
                [
                  -151.71094457699476,
                  68.12812524834494,
                  690.4677213687294
                ],
                [
                  -151.69930557564453,
                  68.12797266669763,
                  749.7877213687293
                ],
                [
                  -151.6997025532236,
                  68.12362815068919,
                  749.7877213687293
                ],
                [
                  -151.7113395494903,
                  68.12378070362878,
                  690.4677213687294
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000223.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000223.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:34:59Z",
            "pc:count": 5014759,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96243.93729,
                "count": 5014759,
                "maximum": 96477.78499,
                "minimum": 95989.32499,
                "name": "X",
                "position": 0,
                "stddev": 130.9204055,
                "variance": 17140.15258
              },
              {
                "average": 2020011.997,
                "count": 5014759,
                "maximum": 2020250.951,
                "minimum": 2019770.151,
                "name": "Y",
                "position": 1,
                "stddev": 130.4366268,
                "variance": 17013.71362
              },
              {
                "average": 713.4159104,
                "count": 5014759,
                "maximum": 749.7877214,
                "minimum": 690.4677214,
                "name": "Z",
                "position": 2,
                "stddev": 11.61031743,
                "variance": 134.7994708
              },
              {
                "average": 50457.7879,
                "count": 5014759,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7545.542794,
                "variance": 56935216.06
              },
              {
                "average": 1.000165511,
                "count": 5014759,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01286406166,
                "variance": 0.0001654840823
              },
              {
                "average": 1.000330624,
                "count": 5014759,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01818006649,
                "variance": 0.0003305148175
              },
              {
                "average": 0.5046429948,
                "count": 5014759,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499978492,
                "variance": 0.2499784924
              },
              {
                "average": 0.000501320203,
                "count": 5014759,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02238457015,
                "variance": 0.000501068981
              },
              {
                "average": 1.227429474,
                "count": 5014759,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4742435238,
                "variance": 0.2249069198
              },
              {
                "average": 0.5868041682,
                "count": 5014759,
                "maximum": 21.37800026,
                "minimum": -20.85000038,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.57961523,
                "variance": 134.0874889
              },
              {
                "average": 0.5096254875,
                "count": 5014759,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999073912,
                "variance": 0.2499073998
              },
              {
                "average": 437.6796177,
                "count": 5014759,
                "maximum": 629,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 126.8744319,
                "variance": 16097.12148
              },
              {
                "average": 249235769.5,
                "count": 5014759,
                "maximum": 249241699.1,
                "minimum": 249233066.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3562.206833,
                "variance": 12689317.52
              },
              {
                "average": 0.5096254875,
                "count": 5014759,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999073912,
                "variance": 0.2499073998
              },
              {
                "average": 0,
                "count": 5014759,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5014759,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5014759,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2509450604,
                "count": 5014759,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4335570026,
                "variance": 0.1879716745
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95989.32499,
              2019770.151,
              690.4677214,
              96477.78499,
              2020250.951,
              749.7877214
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95989.32498853498,
                    2019770.1513047921,
                    690.4677213687294
                  ],
                  [
                    95989.32498853498,
                    2020250.951304792,
                    690.4677213687294
                  ],
                  [
                    96477.78498853497,
                    2020250.951304792,
                    749.7877213687293
                  ],
                  [
                    96477.78498853497,
                    2019770.1513047921,
                    749.7877213687293
                  ],
                  [
                    95989.32498853498,
                    2019770.1513047921,
                    690.4677213687294
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:34:59+00:00",
            "end_time": "2019-08-07T17:11:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000249.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71164479841138,
              68.12787818444046,
              690.4907165514768
            ],
            [
              -151.71124984717673,
              68.13222243263404,
              690.4907165514768
            ],
            [
              -151.69960895018212,
              68.13206986895581,
              735.7107165514768
            ],
            [
              -151.70000590698723,
              68.12772564947056,
              735.7107165514768
            ],
            [
              -151.71164479841138,
              68.12787818444046,
              690.4907165514768
            ]
          ]
        ]
      },
      "bbox": [
        -151.7116448,
        68.12772565,
        690.4907166,
        -151.699609,
        68.13222243,
        735.7107166
      ],
      "properties": {
        "datetime": "2019-08-07T19:34:59Z",
        "pc:count": 4960964,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96211.90984,
            "count": 4960964,
            "maximum": 96449.37489,
            "minimum": 95960.91489,
            "name": "X",
            "position": 0,
            "stddev": 131.6205646,
            "variance": 17323.97302
          },
          {
            "average": 2020469.454,
            "count": 4960964,
            "maximum": 2020703.39,
            "minimum": 2020222.63,
            "name": "Y",
            "position": 1,
            "stddev": 128.1784561,
            "variance": 16429.7166
          },
          {
            "average": 712.5303179,
            "count": 4960964,
            "maximum": 735.7107166,
            "minimum": 690.4907166,
            "name": "Z",
            "position": 2,
            "stddev": 10.66907489,
            "variance": 113.829159
          },
          {
            "average": 51832.81938,
            "count": 4960964,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6416.398112,
            "variance": 41170164.73
          },
          {
            "average": 1.000277164,
            "count": 4960964,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01664593373,
            "variance": 0.0002770871098
          },
          {
            "average": 1.000553925,
            "count": 4960964,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02352908581,
            "variance": 0.0005536178793
          },
          {
            "average": 0.5023247498,
            "count": 4960964,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999946459,
            "variance": 0.2499946459
          },
          {
            "average": 0.0005525135841,
            "count": 4960964,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02349911539,
            "variance": 0.0005522084241
          },
          {
            "average": 1.235695321,
            "count": 4960964,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4902849799,
            "variance": 0.2403793615
          },
          {
            "average": 1.253241715,
            "count": 4960964,
            "maximum": 21.46199989,
            "minimum": -21.18600082,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.775594,
            "variance": 138.6646142
          },
          {
            "average": 0.5137473281,
            "count": 4960964,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998110256,
            "variance": 0.2498110613
          },
          {
            "average": 430.6986483,
            "count": 4960964,
            "maximum": 629,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 124.1368928,
            "variance": 15409.96816
          },
          {
            "average": 249235642.5,
            "count": 4960964,
            "maximum": 249241699,
            "minimum": 249233076.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3609.183921,
            "variance": 13026208.58
          },
          {
            "average": 0.5137473281,
            "count": 4960964,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998110256,
            "variance": 0.2498110613
          },
          {
            "average": 0,
            "count": 4960964,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4960964,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4960964,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2817720508,
            "count": 4960964,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4498628713,
            "variance": 0.202376603
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95960.91489,
          2020222.63,
          690.4907166,
          96449.37489,
          2020703.39,
          735.7107166
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95960.91488549017,
                2020222.630081726,
                690.4907165514768
              ],
              [
                95960.91488549017,
                2020703.3900817258,
                690.4907165514768
              ],
              [
                96449.37488549016,
                2020703.3900817258,
                735.7107165514768
              ],
              [
                96449.37488549016,
                2020222.630081726,
                735.7107165514768
              ],
              [
                95960.91488549017,
                2020222.630081726,
                690.4907165514768
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:34:59+00:00",
        "end_time": "2019-08-07T17:11:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000249.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000249.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000249.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000249.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7116448,
            68.12772565,
            690.4907166,
            -151.699609,
            68.13222243,
            735.7107166
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71164479841138,
                  68.12787818444046,
                  690.4907165514768
                ],
                [
                  -151.71124984717673,
                  68.13222243263404,
                  690.4907165514768
                ],
                [
                  -151.69960895018212,
                  68.13206986895581,
                  735.7107165514768
                ],
                [
                  -151.70000590698723,
                  68.12772564947056,
                  735.7107165514768
                ],
                [
                  -151.71164479841138,
                  68.12787818444046,
                  690.4907165514768
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000249.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000249.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:34:59Z",
            "pc:count": 4960964,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96211.90984,
                "count": 4960964,
                "maximum": 96449.37489,
                "minimum": 95960.91489,
                "name": "X",
                "position": 0,
                "stddev": 131.6205646,
                "variance": 17323.97302
              },
              {
                "average": 2020469.454,
                "count": 4960964,
                "maximum": 2020703.39,
                "minimum": 2020222.63,
                "name": "Y",
                "position": 1,
                "stddev": 128.1784561,
                "variance": 16429.7166
              },
              {
                "average": 712.5303179,
                "count": 4960964,
                "maximum": 735.7107166,
                "minimum": 690.4907166,
                "name": "Z",
                "position": 2,
                "stddev": 10.66907489,
                "variance": 113.829159
              },
              {
                "average": 51832.81938,
                "count": 4960964,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6416.398112,
                "variance": 41170164.73
              },
              {
                "average": 1.000277164,
                "count": 4960964,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01664593373,
                "variance": 0.0002770871098
              },
              {
                "average": 1.000553925,
                "count": 4960964,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02352908581,
                "variance": 0.0005536178793
              },
              {
                "average": 0.5023247498,
                "count": 4960964,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999946459,
                "variance": 0.2499946459
              },
              {
                "average": 0.0005525135841,
                "count": 4960964,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02349911539,
                "variance": 0.0005522084241
              },
              {
                "average": 1.235695321,
                "count": 4960964,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4902849799,
                "variance": 0.2403793615
              },
              {
                "average": 1.253241715,
                "count": 4960964,
                "maximum": 21.46199989,
                "minimum": -21.18600082,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.775594,
                "variance": 138.6646142
              },
              {
                "average": 0.5137473281,
                "count": 4960964,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998110256,
                "variance": 0.2498110613
              },
              {
                "average": 430.6986483,
                "count": 4960964,
                "maximum": 629,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 124.1368928,
                "variance": 15409.96816
              },
              {
                "average": 249235642.5,
                "count": 4960964,
                "maximum": 249241699,
                "minimum": 249233076.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3609.183921,
                "variance": 13026208.58
              },
              {
                "average": 0.5137473281,
                "count": 4960964,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998110256,
                "variance": 0.2498110613
              },
              {
                "average": 0,
                "count": 4960964,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4960964,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4960964,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2817720508,
                "count": 4960964,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4498628713,
                "variance": 0.202376603
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95960.91489,
              2020222.63,
              690.4907166,
              96449.37489,
              2020703.39,
              735.7107166
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95960.91488549017,
                    2020222.630081726,
                    690.4907165514768
                  ],
                  [
                    95960.91488549017,
                    2020703.3900817258,
                    690.4907165514768
                  ],
                  [
                    96449.37488549016,
                    2020703.3900817258,
                    735.7107165514768
                  ],
                  [
                    96449.37488549016,
                    2020222.630081726,
                    735.7107165514768
                  ],
                  [
                    95960.91488549017,
                    2020222.630081726,
                    690.4907165514768
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:34:59+00:00",
            "end_time": "2019-08-07T17:11:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000402.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.746475943818,
              68.1521196313515,
              666.7318289495438
            ],
            [
              -151.7460866108439,
              68.15646451944511,
              666.7318289495438
            ],
            [
              -151.73443285517772,
              68.15631423905191,
              754.6918289495438
            ],
            [
              -151.73482419806433,
              68.15196937927603,
              754.6918289495438
            ],
            [
              -151.746475943818,
              68.1521196313515,
              666.7318289495438
            ]
          ]
        ]
      },
      "bbox": [
        -151.7464759,
        68.15196938,
        666.7318289,
        -151.7344329,
        68.15646452,
        754.6918289
      ],
      "properties": {
        "datetime": "2019-08-07T20:02:42Z",
        "pc:count": 4366888,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94652.51277,
            "count": 4366888,
            "maximum": 94898.41776,
            "minimum": 94409.89776,
            "name": "X",
            "position": 0,
            "stddev": 132.7724077,
            "variance": 17628.51224
          },
          {
            "average": 2023094.204,
            "count": 4366888,
            "maximum": 2023332.932,
            "minimum": 2022852.152,
            "name": "Y",
            "position": 1,
            "stddev": 130.5347364,
            "variance": 17039.31742
          },
          {
            "average": 683.628495,
            "count": 4366888,
            "maximum": 754.6918289,
            "minimum": 666.7318289,
            "name": "Z",
            "position": 2,
            "stddev": 8.239530793,
            "variance": 67.88986768
          },
          {
            "average": 48325.98675,
            "count": 4366888,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10803.64488,
            "variance": 116718742.7
          },
          {
            "average": 1.005363316,
            "count": 4366888,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07314140921,
            "variance": 0.005349665741
          },
          {
            "average": 1.010725716,
            "count": 4366888,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1032279931,
            "variance": 0.01065601856
          },
          {
            "average": 0.5033875382,
            "count": 4366888,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999885817,
            "variance": 0.2499885818
          },
          {
            "average": 0.0005177600158,
            "count": 4366888,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02274845179,
            "variance": 0.0005174920589
          },
          {
            "average": 1.389719407,
            "count": 4366888,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6700986263,
            "variance": 0.4490321689
          },
          {
            "average": 1.602888251,
            "count": 4366888,
            "maximum": 21.57600021,
            "minimum": -20.9640007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.24269119,
            "variance": 126.3981051
          },
          {
            "average": 0.5215336413,
            "count": 4366888,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995361443,
            "variance": 0.2495363594
          },
          {
            "average": 418.3367343,
            "count": 4366888,
            "maximum": 634,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 114.9822779,
            "variance": 13220.92424
          },
          {
            "average": 249236051.7,
            "count": 4366888,
            "maximum": 249243362.1,
            "minimum": 249233795.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3745.6346,
            "variance": 14029778.55
          },
          {
            "average": 0.5215336413,
            "count": 4366888,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995361443,
            "variance": 0.2495363594
          },
          {
            "average": 0,
            "count": 4366888,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4366888,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4366888,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.264984813,
            "count": 4366888,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4413251709,
            "variance": 0.1947679065
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94409.89776,
          2022852.152,
          666.7318289,
          94898.41776,
          2023332.932,
          754.6918289
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94409.89775918474,
                2022852.1518056162,
                666.7318289495438
              ],
              [
                94409.89775918474,
                2023332.931805616,
                666.7318289495438
              ],
              [
                94898.41775918473,
                2023332.931805616,
                754.6918289495438
              ],
              [
                94898.41775918473,
                2022852.1518056162,
                754.6918289495438
              ],
              [
                94409.89775918474,
                2022852.1518056162,
                666.7318289495438
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:02:42+00:00",
        "end_time": "2019-08-07T17:23:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000402.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000402.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000402.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000402.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7464759,
            68.15196938,
            666.7318289,
            -151.7344329,
            68.15646452,
            754.6918289
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.746475943818,
                  68.1521196313515,
                  666.7318289495438
                ],
                [
                  -151.7460866108439,
                  68.15646451944511,
                  666.7318289495438
                ],
                [
                  -151.73443285517772,
                  68.15631423905191,
                  754.6918289495438
                ],
                [
                  -151.73482419806433,
                  68.15196937927603,
                  754.6918289495438
                ],
                [
                  -151.746475943818,
                  68.1521196313515,
                  666.7318289495438
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000402.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000402.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:02:42Z",
            "pc:count": 4366888,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94652.51277,
                "count": 4366888,
                "maximum": 94898.41776,
                "minimum": 94409.89776,
                "name": "X",
                "position": 0,
                "stddev": 132.7724077,
                "variance": 17628.51224
              },
              {
                "average": 2023094.204,
                "count": 4366888,
                "maximum": 2023332.932,
                "minimum": 2022852.152,
                "name": "Y",
                "position": 1,
                "stddev": 130.5347364,
                "variance": 17039.31742
              },
              {
                "average": 683.628495,
                "count": 4366888,
                "maximum": 754.6918289,
                "minimum": 666.7318289,
                "name": "Z",
                "position": 2,
                "stddev": 8.239530793,
                "variance": 67.88986768
              },
              {
                "average": 48325.98675,
                "count": 4366888,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10803.64488,
                "variance": 116718742.7
              },
              {
                "average": 1.005363316,
                "count": 4366888,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07314140921,
                "variance": 0.005349665741
              },
              {
                "average": 1.010725716,
                "count": 4366888,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1032279931,
                "variance": 0.01065601856
              },
              {
                "average": 0.5033875382,
                "count": 4366888,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999885817,
                "variance": 0.2499885818
              },
              {
                "average": 0.0005177600158,
                "count": 4366888,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02274845179,
                "variance": 0.0005174920589
              },
              {
                "average": 1.389719407,
                "count": 4366888,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6700986263,
                "variance": 0.4490321689
              },
              {
                "average": 1.602888251,
                "count": 4366888,
                "maximum": 21.57600021,
                "minimum": -20.9640007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.24269119,
                "variance": 126.3981051
              },
              {
                "average": 0.5215336413,
                "count": 4366888,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995361443,
                "variance": 0.2495363594
              },
              {
                "average": 418.3367343,
                "count": 4366888,
                "maximum": 634,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 114.9822779,
                "variance": 13220.92424
              },
              {
                "average": 249236051.7,
                "count": 4366888,
                "maximum": 249243362.1,
                "minimum": 249233795.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3745.6346,
                "variance": 14029778.55
              },
              {
                "average": 0.5215336413,
                "count": 4366888,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995361443,
                "variance": 0.2495363594
              },
              {
                "average": 0,
                "count": 4366888,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4366888,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4366888,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.264984813,
                "count": 4366888,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4413251709,
                "variance": 0.1947679065
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94409.89776,
              2022852.152,
              666.7318289,
              94898.41776,
              2023332.932,
              754.6918289
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94409.89775918474,
                    2022852.1518056162,
                    666.7318289495438
                  ],
                  [
                    94409.89775918474,
                    2023332.931805616,
                    666.7318289495438
                  ],
                  [
                    94898.41775918473,
                    2023332.931805616,
                    754.6918289495438
                  ],
                  [
                    94898.41775918473,
                    2022852.1518056162,
                    754.6918289495438
                  ],
                  [
                    94409.89775918474,
                    2022852.1518056162,
                    666.7318289495438
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:02:42+00:00",
            "end_time": "2019-08-07T17:23:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000218.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76627449892538,
              68.12320300119879,
              618.163486722626
            ],
            [
              -151.7658889961783,
              68.12754784002377,
              618.163486722626
            ],
            [
              -151.7542489788174,
              68.12739889819841,
              637.9634867226259
            ],
            [
              -151.75463648703087,
              68.1230540873974,
              637.9634867226259
            ],
            [
              -151.76627449892538,
              68.12320300119879,
              618.163486722626
            ]
          ]
        ]
      },
      "bbox": [
        -151.7662745,
        68.12305409,
        618.1634867,
        -151.754249,
        68.12754784,
        637.9634867
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:53Z",
        "pc:count": 4467383,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93932.81278,
            "count": 4467383,
            "maximum": 94176.81179,
            "minimum": 93688.31179,
            "name": "X",
            "position": 0,
            "stddev": 130.035778,
            "variance": 16909.30355
          },
          {
            "average": 2019872.15,
            "count": 4467383,
            "maximum": 2020108.663,
            "minimum": 2019627.843,
            "name": "Y",
            "position": 1,
            "stddev": 128.7183593,
            "variance": 16568.41602
          },
          {
            "average": 620.9889192,
            "count": 4467383,
            "maximum": 637.9634867,
            "minimum": 618.1634867,
            "name": "Z",
            "position": 2,
            "stddev": 1.548551366,
            "variance": 2.398011332
          },
          {
            "average": 34810.71673,
            "count": 4467383,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15180.72864,
            "variance": 230454522.2
          },
          {
            "average": 1.047289431,
            "count": 4467383,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.2140624419,
            "variance": 0.04582272902
          },
          {
            "average": 1.094605947,
            "count": 4467383,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2965924847,
            "variance": 0.08796710196
          },
          {
            "average": 0.4961591607,
            "count": 4467383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999853037,
            "variance": 0.2499853039
          },
          {
            "average": 0.0005217819918,
            "count": 4467383,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0228365902,
            "variance": 0.0005215098521
          },
          {
            "average": 1.608361763,
            "count": 4467383,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9631381726,
            "variance": 0.9276351395
          },
          {
            "average": -0.05593548271,
            "count": 4467383,
            "maximum": 21.47999954,
            "minimum": -20.98200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97973012,
            "variance": 120.5544735
          },
          {
            "average": 0.498488041,
            "count": 4467383,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999977699,
            "variance": 0.2499977699
          },
          {
            "average": 417.1124311,
            "count": 4467383,
            "maximum": 631,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 110.6763484,
            "variance": 12249.2541
          },
          {
            "average": 249236130.2,
            "count": 4467383,
            "maximum": 249242413.7,
            "minimum": 249234278.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3107.899668,
            "variance": 9659040.347
          },
          {
            "average": 0.498488041,
            "count": 4467383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999977699,
            "variance": 0.2499977699
          },
          {
            "average": 0,
            "count": 4467383,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4467383,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4467383,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2068745841,
            "count": 4467383,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4050648433,
            "variance": 0.1640775273
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93688.31179,
          2019627.843,
          618.1634867,
          94176.81179,
          2020108.663,
          637.9634867
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93688.31178584749,
                2019627.8425535567,
                618.163486722626
              ],
              [
                93688.31178584749,
                2020108.6625535565,
                618.163486722626
              ],
              [
                94176.81178584749,
                2020108.6625535565,
                637.9634867226259
              ],
              [
                94176.81178584749,
                2019627.8425535567,
                637.9634867226259
              ],
              [
                93688.31178584749,
                2019627.8425535567,
                618.163486722626
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:53+00:00",
        "end_time": "2019-08-07T17:31:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000218.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000218.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000218.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000218.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7662745,
            68.12305409,
            618.1634867,
            -151.754249,
            68.12754784,
            637.9634867
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76627449892538,
                  68.12320300119879,
                  618.163486722626
                ],
                [
                  -151.7658889961783,
                  68.12754784002377,
                  618.163486722626
                ],
                [
                  -151.7542489788174,
                  68.12739889819841,
                  637.9634867226259
                ],
                [
                  -151.75463648703087,
                  68.1230540873974,
                  637.9634867226259
                ],
                [
                  -151.76627449892538,
                  68.12320300119879,
                  618.163486722626
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000218.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000218.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:53Z",
            "pc:count": 4467383,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93932.81278,
                "count": 4467383,
                "maximum": 94176.81179,
                "minimum": 93688.31179,
                "name": "X",
                "position": 0,
                "stddev": 130.035778,
                "variance": 16909.30355
              },
              {
                "average": 2019872.15,
                "count": 4467383,
                "maximum": 2020108.663,
                "minimum": 2019627.843,
                "name": "Y",
                "position": 1,
                "stddev": 128.7183593,
                "variance": 16568.41602
              },
              {
                "average": 620.9889192,
                "count": 4467383,
                "maximum": 637.9634867,
                "minimum": 618.1634867,
                "name": "Z",
                "position": 2,
                "stddev": 1.548551366,
                "variance": 2.398011332
              },
              {
                "average": 34810.71673,
                "count": 4467383,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15180.72864,
                "variance": 230454522.2
              },
              {
                "average": 1.047289431,
                "count": 4467383,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.2140624419,
                "variance": 0.04582272902
              },
              {
                "average": 1.094605947,
                "count": 4467383,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2965924847,
                "variance": 0.08796710196
              },
              {
                "average": 0.4961591607,
                "count": 4467383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999853037,
                "variance": 0.2499853039
              },
              {
                "average": 0.0005217819918,
                "count": 4467383,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0228365902,
                "variance": 0.0005215098521
              },
              {
                "average": 1.608361763,
                "count": 4467383,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9631381726,
                "variance": 0.9276351395
              },
              {
                "average": -0.05593548271,
                "count": 4467383,
                "maximum": 21.47999954,
                "minimum": -20.98200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97973012,
                "variance": 120.5544735
              },
              {
                "average": 0.498488041,
                "count": 4467383,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999977699,
                "variance": 0.2499977699
              },
              {
                "average": 417.1124311,
                "count": 4467383,
                "maximum": 631,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 110.6763484,
                "variance": 12249.2541
              },
              {
                "average": 249236130.2,
                "count": 4467383,
                "maximum": 249242413.7,
                "minimum": 249234278.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3107.899668,
                "variance": 9659040.347
              },
              {
                "average": 0.498488041,
                "count": 4467383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999977699,
                "variance": 0.2499977699
              },
              {
                "average": 0,
                "count": 4467383,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4467383,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4467383,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2068745841,
                "count": 4467383,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4050648433,
                "variance": 0.1640775273
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93688.31179,
              2019627.843,
              618.1634867,
              94176.81179,
              2020108.663,
              637.9634867
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93688.31178584749,
                    2019627.8425535567,
                    618.163486722626
                  ],
                  [
                    93688.31178584749,
                    2020108.6625535565,
                    618.163486722626
                  ],
                  [
                    94176.81178584749,
                    2020108.6625535565,
                    637.9634867226259
                  ],
                  [
                    94176.81178584749,
                    2019627.8425535567,
                    637.9634867226259
                  ],
                  [
                    93688.31178584749,
                    2019627.8425535567,
                    618.163486722626
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:53+00:00",
            "end_time": "2019-08-07T17:31:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000351.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73485924232557,
              68.14403986629034,
              637.6626562783377
            ],
            [
              -151.73446802879621,
              68.14838460123235,
              637.6626562783377
            ],
            [
              -151.72281617659678,
              68.14823352821945,
              1134.9226562783379
            ],
            [
              -151.72320939902923,
              68.14388882173184,
              1134.9226562783379
            ],
            [
              -151.73485924232557,
              68.14403986629034,
              637.6626562783377
            ]
          ]
        ]
      },
      "bbox": [
        -151.7348592,
        68.14388882,
        637.6626563,
        -151.7228162,
        68.1483846,
        1134.922656
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:51Z",
        "pc:count": 4603100,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95168.4606,
            "count": 4603100,
            "maximum": 95415.45523,
            "minimum": 94926.85523,
            "name": "X",
            "position": 0,
            "stddev": 133.2260467,
            "variance": 17749.17951
          },
          {
            "average": 2022216.476,
            "count": 4603100,
            "maximum": 2022456.443,
            "minimum": 2021975.663,
            "name": "Y",
            "position": 1,
            "stddev": 126.3167162,
            "variance": 15955.9128
          },
          {
            "average": 651.8198669,
            "count": 4603100,
            "maximum": 1134.922656,
            "minimum": 637.6626563,
            "name": "Z",
            "position": 2,
            "stddev": 2.745431435,
            "variance": 7.537393767
          },
          {
            "average": 47077.32032,
            "count": 4603100,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12473.18628,
            "variance": 155580375.9
          },
          {
            "average": 1.0308579,
            "count": 4603100,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1743401782,
            "variance": 0.03039449774
          },
          {
            "average": 1.061714497,
            "count": 4603100,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2436623989,
            "variance": 0.05937136464
          },
          {
            "average": 0.500640438,
            "count": 4603100,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996442,
            "variance": 0.2499996442
          },
          {
            "average": 0.0004105928613,
            "count": 4603100,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02025893294,
            "variance": 0.000410424364
          },
          {
            "average": 1.661681041,
            "count": 4603100,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.116618199,
            "variance": 1.246836201
          },
          {
            "average": -3.418839885,
            "count": 4603100,
            "maximum": 15.47399998,
            "minimum": -21.0359993,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72970271,
            "variance": 115.1265203
          },
          {
            "average": 0.4752675371,
            "count": 4603100,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993879849,
            "variance": 0.2493883595
          },
          {
            "average": 420.8097539,
            "count": 4603100,
            "maximum": 632,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 117.3328308,
            "variance": 13766.99317
          },
          {
            "average": 249235904.1,
            "count": 4603100,
            "maximum": 249242711.3,
            "minimum": 249233595.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3697.641404,
            "variance": 13672551.95
          },
          {
            "average": 0.4752675371,
            "count": 4603100,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993879849,
            "variance": 0.2493883595
          },
          {
            "average": 0,
            "count": 4603100,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4603100,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4603100,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1751843323,
            "count": 4603100,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.380124734,
            "variance": 0.1444948134
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94926.85523,
          2021975.663,
          637.6626563,
          95415.45523,
          2022456.443,
          1134.922656
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94926.85522801788,
                2021975.66327801,
                637.6626562783377
              ],
              [
                94926.85522801788,
                2022456.4432780098,
                637.6626562783377
              ],
              [
                95415.45522801789,
                2022456.4432780098,
                1134.9226562783379
              ],
              [
                95415.45522801789,
                2021975.66327801,
                1134.9226562783379
              ],
              [
                94926.85522801788,
                2021975.66327801,
                637.6626562783377
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:51+00:00",
        "end_time": "2019-08-07T17:19:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000351.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000351.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000351.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000351.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7348592,
            68.14388882,
            637.6626563,
            -151.7228162,
            68.1483846,
            1134.922656
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73485924232557,
                  68.14403986629034,
                  637.6626562783377
                ],
                [
                  -151.73446802879621,
                  68.14838460123235,
                  637.6626562783377
                ],
                [
                  -151.72281617659678,
                  68.14823352821945,
                  1134.9226562783379
                ],
                [
                  -151.72320939902923,
                  68.14388882173184,
                  1134.9226562783379
                ],
                [
                  -151.73485924232557,
                  68.14403986629034,
                  637.6626562783377
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000351.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000351.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:51Z",
            "pc:count": 4603100,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95168.4606,
                "count": 4603100,
                "maximum": 95415.45523,
                "minimum": 94926.85523,
                "name": "X",
                "position": 0,
                "stddev": 133.2260467,
                "variance": 17749.17951
              },
              {
                "average": 2022216.476,
                "count": 4603100,
                "maximum": 2022456.443,
                "minimum": 2021975.663,
                "name": "Y",
                "position": 1,
                "stddev": 126.3167162,
                "variance": 15955.9128
              },
              {
                "average": 651.8198669,
                "count": 4603100,
                "maximum": 1134.922656,
                "minimum": 637.6626563,
                "name": "Z",
                "position": 2,
                "stddev": 2.745431435,
                "variance": 7.537393767
              },
              {
                "average": 47077.32032,
                "count": 4603100,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12473.18628,
                "variance": 155580375.9
              },
              {
                "average": 1.0308579,
                "count": 4603100,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1743401782,
                "variance": 0.03039449774
              },
              {
                "average": 1.061714497,
                "count": 4603100,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2436623989,
                "variance": 0.05937136464
              },
              {
                "average": 0.500640438,
                "count": 4603100,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996442,
                "variance": 0.2499996442
              },
              {
                "average": 0.0004105928613,
                "count": 4603100,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02025893294,
                "variance": 0.000410424364
              },
              {
                "average": 1.661681041,
                "count": 4603100,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.116618199,
                "variance": 1.246836201
              },
              {
                "average": -3.418839885,
                "count": 4603100,
                "maximum": 15.47399998,
                "minimum": -21.0359993,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72970271,
                "variance": 115.1265203
              },
              {
                "average": 0.4752675371,
                "count": 4603100,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993879849,
                "variance": 0.2493883595
              },
              {
                "average": 420.8097539,
                "count": 4603100,
                "maximum": 632,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 117.3328308,
                "variance": 13766.99317
              },
              {
                "average": 249235904.1,
                "count": 4603100,
                "maximum": 249242711.3,
                "minimum": 249233595.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3697.641404,
                "variance": 13672551.95
              },
              {
                "average": 0.4752675371,
                "count": 4603100,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993879849,
                "variance": 0.2493883595
              },
              {
                "average": 0,
                "count": 4603100,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4603100,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4603100,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1751843323,
                "count": 4603100,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.380124734,
                "variance": 0.1444948134
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94926.85523,
              2021975.663,
              637.6626563,
              95415.45523,
              2022456.443,
              1134.922656
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94926.85522801788,
                    2021975.66327801,
                    637.6626562783377
                  ],
                  [
                    94926.85522801788,
                    2022456.4432780098,
                    637.6626562783377
                  ],
                  [
                    95415.45522801789,
                    2022456.4432780098,
                    1134.9226562783379
                  ],
                  [
                    95415.45522801789,
                    2021975.66327801,
                    1134.9226562783379
                  ],
                  [
                    94926.85522801788,
                    2021975.66327801,
                    637.6626562783377
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:51+00:00",
            "end_time": "2019-08-07T17:19:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000430.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.72478299693944,
              68.15644722216521,
              654.00636854801
            ],
            [
              -151.72438998084854,
              68.16079068414032,
              654.00636854801
            ],
            [
              -151.7127353058856,
              68.16063897142163,
              681.0263685480099
            ],
            [
              -151.71313033165674,
              68.15629553803106,
              681.0263685480099
            ],
            [
              -151.72478299693944,
              68.15644722216521,
              654.00636854801
            ]
          ]
        ]
      },
      "bbox": [
        -151.724783,
        68.15629554,
        654.0063685,
        -151.7127353,
        68.16079068,
        681.0263685
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:22Z",
        "pc:count": 4487939,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95544.80155,
            "count": 4487939,
            "maximum": 95790.44239,
            "minimum": 95301.96239,
            "name": "X",
            "position": 0,
            "stddev": 132.7558466,
            "variance": 17624.1148
          },
          {
            "average": 2023599.378,
            "count": 4487939,
            "maximum": 2023842.068,
            "minimum": 2023361.448,
            "name": "Y",
            "position": 1,
            "stddev": 128.1988632,
            "variance": 16434.94853
          },
          {
            "average": 662.4327042,
            "count": 4487939,
            "maximum": 681.0263685,
            "minimum": 654.0063685,
            "name": "Z",
            "position": 2,
            "stddev": 4.664965563,
            "variance": 21.76190371
          },
          {
            "average": 48871.7025,
            "count": 4487939,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6814.569578,
            "variance": 46438358.53
          },
          {
            "average": 1.000213238,
            "count": 4487939,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0146011222,
            "variance": 0.0002131927694
          },
          {
            "average": 1.000425585,
            "count": 4487939,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02062532616,
            "variance": 0.0004254040792
          },
          {
            "average": 0.4967890606,
            "count": 4487939,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999897455,
            "variance": 0.2499897456
          },
          {
            "average": 0.0004897571023,
            "count": 4487939,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02212503897,
            "variance": 0.0004895173494
          },
          {
            "average": 1.252623754,
            "count": 4487939,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4463077986,
            "variance": 0.1991906511
          },
          {
            "average": 3.859739768,
            "count": 4487939,
            "maximum": 21.4260006,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.98429785,
            "variance": 120.6547993
          },
          {
            "average": 0.5149528548,
            "count": 4487939,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997764178,
            "variance": 0.2497764678
          },
          {
            "average": 424.1295697,
            "count": 4487939,
            "maximum": 633,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.6462789,
            "variance": 14555.52462
          },
          {
            "average": 249235975,
            "count": 4487939,
            "maximum": 249243042.4,
            "minimum": 249233471.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4003.97773,
            "variance": 16031837.66
          },
          {
            "average": 0.5149528548,
            "count": 4487939,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997764178,
            "variance": 0.2497764678
          },
          {
            "average": 0,
            "count": 4487939,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4487939,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4487939,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.253579427,
            "count": 4487939,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4350597009,
            "variance": 0.1892769434
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95301.96239,
          2023361.448,
          654.0063685,
          95790.44239,
          2023842.068,
          681.0263685
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95301.96239482035,
                2023361.448297935,
                654.00636854801
              ],
              [
                95301.96239482035,
                2023842.0682979352,
                654.00636854801
              ],
              [
                95790.44239482036,
                2023842.0682979352,
                681.0263685480099
              ],
              [
                95790.44239482036,
                2023361.448297935,
                681.0263685480099
              ],
              [
                95301.96239482035,
                2023361.448297935,
                654.00636854801
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:22+00:00",
        "end_time": "2019-08-07T17:17:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000430.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000430.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000430.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000430.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.724783,
            68.15629554,
            654.0063685,
            -151.7127353,
            68.16079068,
            681.0263685
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.72478299693944,
                  68.15644722216521,
                  654.00636854801
                ],
                [
                  -151.72438998084854,
                  68.16079068414032,
                  654.00636854801
                ],
                [
                  -151.7127353058856,
                  68.16063897142163,
                  681.0263685480099
                ],
                [
                  -151.71313033165674,
                  68.15629553803106,
                  681.0263685480099
                ],
                [
                  -151.72478299693944,
                  68.15644722216521,
                  654.00636854801
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000430.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000430.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:22Z",
            "pc:count": 4487939,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95544.80155,
                "count": 4487939,
                "maximum": 95790.44239,
                "minimum": 95301.96239,
                "name": "X",
                "position": 0,
                "stddev": 132.7558466,
                "variance": 17624.1148
              },
              {
                "average": 2023599.378,
                "count": 4487939,
                "maximum": 2023842.068,
                "minimum": 2023361.448,
                "name": "Y",
                "position": 1,
                "stddev": 128.1988632,
                "variance": 16434.94853
              },
              {
                "average": 662.4327042,
                "count": 4487939,
                "maximum": 681.0263685,
                "minimum": 654.0063685,
                "name": "Z",
                "position": 2,
                "stddev": 4.664965563,
                "variance": 21.76190371
              },
              {
                "average": 48871.7025,
                "count": 4487939,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6814.569578,
                "variance": 46438358.53
              },
              {
                "average": 1.000213238,
                "count": 4487939,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0146011222,
                "variance": 0.0002131927694
              },
              {
                "average": 1.000425585,
                "count": 4487939,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02062532616,
                "variance": 0.0004254040792
              },
              {
                "average": 0.4967890606,
                "count": 4487939,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999897455,
                "variance": 0.2499897456
              },
              {
                "average": 0.0004897571023,
                "count": 4487939,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02212503897,
                "variance": 0.0004895173494
              },
              {
                "average": 1.252623754,
                "count": 4487939,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4463077986,
                "variance": 0.1991906511
              },
              {
                "average": 3.859739768,
                "count": 4487939,
                "maximum": 21.4260006,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.98429785,
                "variance": 120.6547993
              },
              {
                "average": 0.5149528548,
                "count": 4487939,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997764178,
                "variance": 0.2497764678
              },
              {
                "average": 424.1295697,
                "count": 4487939,
                "maximum": 633,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.6462789,
                "variance": 14555.52462
              },
              {
                "average": 249235975,
                "count": 4487939,
                "maximum": 249243042.4,
                "minimum": 249233471.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4003.97773,
                "variance": 16031837.66
              },
              {
                "average": 0.5149528548,
                "count": 4487939,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997764178,
                "variance": 0.2497764678
              },
              {
                "average": 0,
                "count": 4487939,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4487939,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4487939,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.253579427,
                "count": 4487939,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4350597009,
                "variance": 0.1892769434
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95301.96239,
              2023361.448,
              654.0063685,
              95790.44239,
              2023842.068,
              681.0263685
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95301.96239482035,
                    2023361.448297935,
                    654.00636854801
                  ],
                  [
                    95301.96239482035,
                    2023842.0682979352,
                    654.00636854801
                  ],
                  [
                    95790.44239482036,
                    2023842.0682979352,
                    681.0263685480099
                  ],
                  [
                    95790.44239482036,
                    2023361.448297935,
                    681.0263685480099
                  ],
                  [
                    95301.96239482035,
                    2023361.448297935,
                    654.00636854801
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:22+00:00",
            "end_time": "2019-08-07T17:17:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000323.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.75653954019396,
              68.13971019482541,
              642.58105538452
            ],
            [
              -151.75615208794363,
              68.14405545203832,
              642.58105538452
            ],
            [
              -151.74450354053482,
              68.143905841556,
              699.92105538452
            ],
            [
              -151.7448930010908,
              68.1395606125192,
              699.92105538452
            ],
            [
              -151.75653954019396,
              68.13971019482541,
              642.58105538452
            ]
          ]
        ]
      },
      "bbox": [
        -151.7565395,
        68.13956061,
        642.5810554,
        -151.7445035,
        68.14405545,
        699.9210554
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:52Z",
        "pc:count": 4414990,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94279.10846,
            "count": 4414990,
            "maximum": 94523.34386,
            "minimum": 94034.80386,
            "name": "X",
            "position": 0,
            "stddev": 134.1897717,
            "variance": 18006.89483
          },
          {
            "average": 2021704.701,
            "count": 4414990,
            "maximum": 2021947.093,
            "minimum": 2021466.253,
            "name": "Y",
            "position": 1,
            "stddev": 131.7944563,
            "variance": 17369.7787
          },
          {
            "average": 670.9943701,
            "count": 4414990,
            "maximum": 699.9210554,
            "minimum": 642.5810554,
            "name": "Z",
            "position": 2,
            "stddev": 9.785801304,
            "variance": 95.76190716
          },
          {
            "average": 50950.73787,
            "count": 4414990,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7485.766126,
            "variance": 56036694.49
          },
          {
            "average": 1.000060476,
            "count": 4414990,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00777638377,
            "variance": 6.047214454e-05
          },
          {
            "average": 1.000120952,
            "count": 4414990,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01099713483,
            "variance": 0.0001209369744
          },
          {
            "average": 0.5055236818,
            "count": 4414990,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999695446,
            "variance": 0.2499695456
          },
          {
            "average": 0.0005755392424,
            "count": 4414990,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02398349698,
            "variance": 0.0005752081273
          },
          {
            "average": 1.27138023,
            "count": 4414990,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4525832419,
            "variance": 0.2048315908
          },
          {
            "average": -1.072272441,
            "count": 4414990,
            "maximum": 22.32600021,
            "minimum": -21.0359993,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.22633679,
            "variance": 126.0306378
          },
          {
            "average": 0.4956285292,
            "count": 4414990,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999809465,
            "variance": 0.2499809469
          },
          {
            "average": 417.8350069,
            "count": 4414990,
            "maximum": 633,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.9714458,
            "variance": 12762.54757
          },
          {
            "average": 249236095.7,
            "count": 4414990,
            "maximum": 249243072.1,
            "minimum": 249233928.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3439.396776,
            "variance": 11829450.19
          },
          {
            "average": 0.4956285292,
            "count": 4414990,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999809465,
            "variance": 0.2499809469
          },
          {
            "average": 0,
            "count": 4414990,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4414990,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4414990,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2732230424,
            "count": 4414990,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4456144707,
            "variance": 0.1985722565
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94034.80386,
          2021466.253,
          642.5810554,
          94523.34386,
          2021947.093,
          699.9210554
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94034.80385900511,
                2021466.2533504867,
                642.58105538452
              ],
              [
                94034.80385900511,
                2021947.0933504866,
                642.58105538452
              ],
              [
                94523.34385900512,
                2021947.0933504866,
                699.92105538452
              ],
              [
                94523.34385900512,
                2021466.2533504867,
                699.92105538452
              ],
              [
                94034.80385900511,
                2021466.2533504867,
                642.58105538452
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:52+00:00",
        "end_time": "2019-08-07T17:25:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000323.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000323.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000323.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000323.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7565395,
            68.13956061,
            642.5810554,
            -151.7445035,
            68.14405545,
            699.9210554
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.75653954019396,
                  68.13971019482541,
                  642.58105538452
                ],
                [
                  -151.75615208794363,
                  68.14405545203832,
                  642.58105538452
                ],
                [
                  -151.74450354053482,
                  68.143905841556,
                  699.92105538452
                ],
                [
                  -151.7448930010908,
                  68.1395606125192,
                  699.92105538452
                ],
                [
                  -151.75653954019396,
                  68.13971019482541,
                  642.58105538452
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000323.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000323.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:52Z",
            "pc:count": 4414990,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94279.10846,
                "count": 4414990,
                "maximum": 94523.34386,
                "minimum": 94034.80386,
                "name": "X",
                "position": 0,
                "stddev": 134.1897717,
                "variance": 18006.89483
              },
              {
                "average": 2021704.701,
                "count": 4414990,
                "maximum": 2021947.093,
                "minimum": 2021466.253,
                "name": "Y",
                "position": 1,
                "stddev": 131.7944563,
                "variance": 17369.7787
              },
              {
                "average": 670.9943701,
                "count": 4414990,
                "maximum": 699.9210554,
                "minimum": 642.5810554,
                "name": "Z",
                "position": 2,
                "stddev": 9.785801304,
                "variance": 95.76190716
              },
              {
                "average": 50950.73787,
                "count": 4414990,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7485.766126,
                "variance": 56036694.49
              },
              {
                "average": 1.000060476,
                "count": 4414990,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00777638377,
                "variance": 6.047214454e-05
              },
              {
                "average": 1.000120952,
                "count": 4414990,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01099713483,
                "variance": 0.0001209369744
              },
              {
                "average": 0.5055236818,
                "count": 4414990,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999695446,
                "variance": 0.2499695456
              },
              {
                "average": 0.0005755392424,
                "count": 4414990,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02398349698,
                "variance": 0.0005752081273
              },
              {
                "average": 1.27138023,
                "count": 4414990,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4525832419,
                "variance": 0.2048315908
              },
              {
                "average": -1.072272441,
                "count": 4414990,
                "maximum": 22.32600021,
                "minimum": -21.0359993,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.22633679,
                "variance": 126.0306378
              },
              {
                "average": 0.4956285292,
                "count": 4414990,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999809465,
                "variance": 0.2499809469
              },
              {
                "average": 417.8350069,
                "count": 4414990,
                "maximum": 633,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.9714458,
                "variance": 12762.54757
              },
              {
                "average": 249236095.7,
                "count": 4414990,
                "maximum": 249243072.1,
                "minimum": 249233928.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3439.396776,
                "variance": 11829450.19
              },
              {
                "average": 0.4956285292,
                "count": 4414990,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999809465,
                "variance": 0.2499809469
              },
              {
                "average": 0,
                "count": 4414990,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4414990,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4414990,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2732230424,
                "count": 4414990,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4456144707,
                "variance": 0.1985722565
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94034.80386,
              2021466.253,
              642.5810554,
              94523.34386,
              2021947.093,
              699.9210554
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94034.80385900511,
                    2021466.2533504867,
                    642.58105538452
                  ],
                  [
                    94034.80385900511,
                    2021947.0933504866,
                    642.58105538452
                  ],
                  [
                    94523.34385900512,
                    2021947.0933504866,
                    699.92105538452
                  ],
                  [
                    94523.34385900512,
                    2021466.2533504867,
                    699.92105538452
                  ],
                  [
                    94034.80385900511,
                    2021466.2533504867,
                    642.58105538452
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:52+00:00",
            "end_time": "2019-08-07T17:25:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000348.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76784897120515,
              68.14369056576774,
              674.390476556234
            ],
            [
              -151.7674634424959,
              68.1480355490723,
              674.390476556234
            ],
            [
              -151.75581107781818,
              68.14788666389633,
              690.5904765562341
            ],
            [
              -151.75619861567648,
              68.14354170863523,
              690.5904765562341
            ],
            [
              -151.76784897120515,
              68.14369056576774,
              674.390476556234
            ]
          ]
        ]
      },
      "bbox": [
        -151.767849,
        68.14354171,
        674.3904766,
        -151.7558111,
        68.14803555,
        690.5904766
      ],
      "properties": {
        "datetime": "2019-08-07T20:02:22Z",
        "pc:count": 4526798,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93788.93574,
            "count": 4526798,
            "maximum": 94034.77402,
            "minimum": 93546.15402,
            "name": "X",
            "position": 0,
            "stddev": 131.2327959,
            "variance": 17222.04671
          },
          {
            "average": 2022124.216,
            "count": 4526798,
            "maximum": 2022371.043,
            "minimum": 2021890.243,
            "name": "Y",
            "position": 1,
            "stddev": 132.7226304,
            "variance": 17615.29661
          },
          {
            "average": 682.7663418,
            "count": 4526798,
            "maximum": 690.5904766,
            "minimum": 674.3904766,
            "name": "Z",
            "position": 2,
            "stddev": 3.969780374,
            "variance": 15.75915622
          },
          {
            "average": 50289.91012,
            "count": 4526798,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 7052.221103,
            "variance": 49733822.49
          },
          {
            "average": 1.000002651,
            "count": 4526798,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001628150465,
            "variance": 2.650873938e-06
          },
          {
            "average": 1.000005081,
            "count": 4526798,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002254069513,
            "variance": 5.080829368e-06
          },
          {
            "average": 0.4949723845,
            "count": 4526798,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999747777,
            "variance": 0.2499747783
          },
          {
            "average": 0.0004824602291,
            "count": 4526798,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0219596805,
            "variance": 0.0004822275677
          },
          {
            "average": 1.261586446,
            "count": 4526798,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4477502778,
            "variance": 0.2004803113
          },
          {
            "average": 0.1204010079,
            "count": 4526798,
            "maximum": 21.69599915,
            "minimum": -20.91600037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.03063333,
            "variance": 121.6748716
          },
          {
            "average": 0.4978306962,
            "count": 4526798,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999953493,
            "variance": 0.2499953493
          },
          {
            "average": 418.4694665,
            "count": 4526798,
            "maximum": 634,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.2951141,
            "variance": 12610.19265
          },
          {
            "average": 249236342.4,
            "count": 4526798,
            "maximum": 249243342.3,
            "minimum": 249234240.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3485.249818,
            "variance": 12146966.29
          },
          {
            "average": 0.4978306962,
            "count": 4526798,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999953493,
            "variance": 0.2499953493
          },
          {
            "average": 0,
            "count": 4526798,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4526798,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4526798,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2078572978,
            "count": 4526798,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4057741711,
            "variance": 0.1646526779
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93546.15402,
          2021890.243,
          674.3904766,
          94034.77402,
          2022371.043,
          690.5904766
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93546.15402010271,
                2021890.2426149205,
                674.390476556234
              ],
              [
                93546.15402010271,
                2022371.0426149203,
                674.390476556234
              ],
              [
                94034.7740201027,
                2022371.0426149203,
                690.5904765562341
              ],
              [
                94034.7740201027,
                2021890.2426149205,
                690.5904765562341
              ],
              [
                93546.15402010271,
                2021890.2426149205,
                674.390476556234
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:02:22+00:00",
        "end_time": "2019-08-07T17:30:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000348.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000348.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000348.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000348.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.767849,
            68.14354171,
            674.3904766,
            -151.7558111,
            68.14803555,
            690.5904766
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76784897120515,
                  68.14369056576774,
                  674.390476556234
                ],
                [
                  -151.7674634424959,
                  68.1480355490723,
                  674.390476556234
                ],
                [
                  -151.75581107781818,
                  68.14788666389633,
                  690.5904765562341
                ],
                [
                  -151.75619861567648,
                  68.14354170863523,
                  690.5904765562341
                ],
                [
                  -151.76784897120515,
                  68.14369056576774,
                  674.390476556234
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000348.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000348.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:02:22Z",
            "pc:count": 4526798,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93788.93574,
                "count": 4526798,
                "maximum": 94034.77402,
                "minimum": 93546.15402,
                "name": "X",
                "position": 0,
                "stddev": 131.2327959,
                "variance": 17222.04671
              },
              {
                "average": 2022124.216,
                "count": 4526798,
                "maximum": 2022371.043,
                "minimum": 2021890.243,
                "name": "Y",
                "position": 1,
                "stddev": 132.7226304,
                "variance": 17615.29661
              },
              {
                "average": 682.7663418,
                "count": 4526798,
                "maximum": 690.5904766,
                "minimum": 674.3904766,
                "name": "Z",
                "position": 2,
                "stddev": 3.969780374,
                "variance": 15.75915622
              },
              {
                "average": 50289.91012,
                "count": 4526798,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 7052.221103,
                "variance": 49733822.49
              },
              {
                "average": 1.000002651,
                "count": 4526798,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001628150465,
                "variance": 2.650873938e-06
              },
              {
                "average": 1.000005081,
                "count": 4526798,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002254069513,
                "variance": 5.080829368e-06
              },
              {
                "average": 0.4949723845,
                "count": 4526798,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999747777,
                "variance": 0.2499747783
              },
              {
                "average": 0.0004824602291,
                "count": 4526798,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0219596805,
                "variance": 0.0004822275677
              },
              {
                "average": 1.261586446,
                "count": 4526798,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4477502778,
                "variance": 0.2004803113
              },
              {
                "average": 0.1204010079,
                "count": 4526798,
                "maximum": 21.69599915,
                "minimum": -20.91600037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.03063333,
                "variance": 121.6748716
              },
              {
                "average": 0.4978306962,
                "count": 4526798,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999953493,
                "variance": 0.2499953493
              },
              {
                "average": 418.4694665,
                "count": 4526798,
                "maximum": 634,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.2951141,
                "variance": 12610.19265
              },
              {
                "average": 249236342.4,
                "count": 4526798,
                "maximum": 249243342.3,
                "minimum": 249234240.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3485.249818,
                "variance": 12146966.29
              },
              {
                "average": 0.4978306962,
                "count": 4526798,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999953493,
                "variance": 0.2499953493
              },
              {
                "average": 0,
                "count": 4526798,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4526798,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4526798,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2078572978,
                "count": 4526798,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4057741711,
                "variance": 0.1646526779
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93546.15402,
              2021890.243,
              674.3904766,
              94034.77402,
              2022371.043,
              690.5904766
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93546.15402010271,
                    2021890.2426149205,
                    674.390476556234
                  ],
                  [
                    93546.15402010271,
                    2022371.0426149203,
                    674.390476556234
                  ],
                  [
                    94034.7740201027,
                    2022371.0426149203,
                    690.5904765562341
                  ],
                  [
                    94034.7740201027,
                    2021890.2426149205,
                    690.5904765562341
                  ],
                  [
                    93546.15402010271,
                    2021890.2426149205,
                    674.390476556234
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:02:22+00:00",
            "end_time": "2019-08-07T17:30:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000221.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73331477011234,
              68.12355142050382,
              654.6186158685277
            ],
            [
              -151.73292354331332,
              68.12789655313452,
              654.6186158685277
            ],
            [
              -151.72128403823672,
              68.1277454261713,
              714.1786158685277
            ],
            [
              -151.7216772705067,
              68.12340032197815,
              714.1786158685277
            ],
            [
              -151.73331477011234,
              68.12355142050382,
              654.6186158685277
            ]
          ]
        ]
      },
      "bbox": [
        -151.7333148,
        68.12340032,
        654.6186159,
        -151.721284,
        68.12789655,
        714.1786159
      ],
      "properties": {
        "datetime": "2019-08-07T19:39:52Z",
        "pc:count": 4302118,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95316.23717,
            "count": 4302118,
            "maximum": 95557.36137,
            "minimum": 95068.88137,
            "name": "X",
            "position": 0,
            "stddev": 135.8449973,
            "variance": 18453.86329
          },
          {
            "average": 2019954.853,
            "count": 4302118,
            "maximum": 2020194.057,
            "minimum": 2019713.197,
            "name": "Y",
            "position": 1,
            "stddev": 132.0845672,
            "variance": 17446.3329
          },
          {
            "average": 672.5220184,
            "count": 4302118,
            "maximum": 714.1786159,
            "minimum": 654.6186159,
            "name": "Z",
            "position": 2,
            "stddev": 9.669352935,
            "variance": 93.49638619
          },
          {
            "average": 51716.32375,
            "count": 4302118,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 7776.309344,
            "variance": 60470987.01
          },
          {
            "average": 1.000105994,
            "count": 4302118,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01029480904,
            "variance": 0.0001059830931
          },
          {
            "average": 1.000211989,
            "count": 4302118,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01455828687,
            "variance": 0.0002119437166
          },
          {
            "average": 0.4196488799,
            "count": 4302118,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4935015239,
            "variance": 0.2435437541
          },
          {
            "average": 0.0003591254354,
            "count": 4302118,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01894720422,
            "variance": 0.0003589965478
          },
          {
            "average": 1.25213116,
            "count": 4302118,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4741611621,
            "variance": 0.2248288076
          },
          {
            "average": 1.695149255,
            "count": 4302118,
            "maximum": 21.34799957,
            "minimum": -20.9640007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.10220791,
            "variance": 123.2590204
          },
          {
            "average": 0.4717573995,
            "count": 4302118,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992017763,
            "variance": 0.2492024134
          },
          {
            "average": 429.5102171,
            "count": 4302118,
            "maximum": 630,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 121.334202,
            "variance": 14721.98858
          },
          {
            "average": 249235930.9,
            "count": 4302118,
            "maximum": 249241992.7,
            "minimum": 249233634,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3409.951193,
            "variance": 11627767.14
          },
          {
            "average": 0.4717573995,
            "count": 4302118,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992017763,
            "variance": 0.2492024134
          },
          {
            "average": 0,
            "count": 4302118,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4302118,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4302118,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1866059927,
            "count": 4302118,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3895949582,
            "variance": 0.1517842315
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95068.88137,
          2019713.197,
          654.6186159,
          95557.36137,
          2020194.057,
          714.1786159
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95068.88136932523,
                2019713.1965850026,
                654.6186158685277
              ],
              [
                95068.88136932523,
                2020194.0565850025,
                654.6186158685277
              ],
              [
                95557.36136932524,
                2020194.0565850025,
                714.1786158685277
              ],
              [
                95557.36136932524,
                2019713.1965850026,
                714.1786158685277
              ],
              [
                95068.88136932523,
                2019713.1965850026,
                654.6186158685277
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:39:52+00:00",
        "end_time": "2019-08-07T17:20:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000221.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000221.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000221.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000221.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7333148,
            68.12340032,
            654.6186159,
            -151.721284,
            68.12789655,
            714.1786159
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73331477011234,
                  68.12355142050382,
                  654.6186158685277
                ],
                [
                  -151.73292354331332,
                  68.12789655313452,
                  654.6186158685277
                ],
                [
                  -151.72128403823672,
                  68.1277454261713,
                  714.1786158685277
                ],
                [
                  -151.7216772705067,
                  68.12340032197815,
                  714.1786158685277
                ],
                [
                  -151.73331477011234,
                  68.12355142050382,
                  654.6186158685277
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000221.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000221.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:39:52Z",
            "pc:count": 4302118,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95316.23717,
                "count": 4302118,
                "maximum": 95557.36137,
                "minimum": 95068.88137,
                "name": "X",
                "position": 0,
                "stddev": 135.8449973,
                "variance": 18453.86329
              },
              {
                "average": 2019954.853,
                "count": 4302118,
                "maximum": 2020194.057,
                "minimum": 2019713.197,
                "name": "Y",
                "position": 1,
                "stddev": 132.0845672,
                "variance": 17446.3329
              },
              {
                "average": 672.5220184,
                "count": 4302118,
                "maximum": 714.1786159,
                "minimum": 654.6186159,
                "name": "Z",
                "position": 2,
                "stddev": 9.669352935,
                "variance": 93.49638619
              },
              {
                "average": 51716.32375,
                "count": 4302118,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 7776.309344,
                "variance": 60470987.01
              },
              {
                "average": 1.000105994,
                "count": 4302118,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01029480904,
                "variance": 0.0001059830931
              },
              {
                "average": 1.000211989,
                "count": 4302118,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01455828687,
                "variance": 0.0002119437166
              },
              {
                "average": 0.4196488799,
                "count": 4302118,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4935015239,
                "variance": 0.2435437541
              },
              {
                "average": 0.0003591254354,
                "count": 4302118,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01894720422,
                "variance": 0.0003589965478
              },
              {
                "average": 1.25213116,
                "count": 4302118,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4741611621,
                "variance": 0.2248288076
              },
              {
                "average": 1.695149255,
                "count": 4302118,
                "maximum": 21.34799957,
                "minimum": -20.9640007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.10220791,
                "variance": 123.2590204
              },
              {
                "average": 0.4717573995,
                "count": 4302118,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992017763,
                "variance": 0.2492024134
              },
              {
                "average": 429.5102171,
                "count": 4302118,
                "maximum": 630,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 121.334202,
                "variance": 14721.98858
              },
              {
                "average": 249235930.9,
                "count": 4302118,
                "maximum": 249241992.7,
                "minimum": 249233634,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3409.951193,
                "variance": 11627767.14
              },
              {
                "average": 0.4717573995,
                "count": 4302118,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992017763,
                "variance": 0.2492024134
              },
              {
                "average": 0,
                "count": 4302118,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4302118,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4302118,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1866059927,
                "count": 4302118,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3895949582,
                "variance": 0.1517842315
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95068.88137,
              2019713.197,
              654.6186159,
              95557.36137,
              2020194.057,
              714.1786159
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95068.88136932523,
                    2019713.1965850026,
                    654.6186158685277
                  ],
                  [
                    95068.88136932523,
                    2020194.0565850025,
                    654.6186158685277
                  ],
                  [
                    95557.36136932524,
                    2020194.0565850025,
                    714.1786158685277
                  ],
                  [
                    95557.36136932524,
                    2019713.1965850026,
                    714.1786158685277
                  ],
                  [
                    95068.88136932523,
                    2019713.1965850026,
                    654.6186158685277
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:39:52+00:00",
            "end_time": "2019-08-07T17:20:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000269.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77789321816283,
              68.13128049705125,
              670.1408072727446
            ],
            [
              -151.77750958085988,
              68.13562566881181,
              670.1408072727446
            ],
            [
              -151.76586576022856,
              68.1354774949451,
              711.7808072727447
            ],
            [
              -151.76625140441564,
              68.1311323510776,
              711.7808072727447
            ],
            [
              -151.77789321816283,
              68.13128049705125,
              670.1408072727446
            ]
          ]
        ]
      },
      "bbox": [
        -151.7778932,
        68.13113235,
        670.1408073,
        -151.7658658,
        68.13562567,
        711.7808073
      ],
      "properties": {
        "datetime": "2019-08-07T19:58:09Z",
        "pc:count": 5151545,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93421.46435,
            "count": 5151545,
            "maximum": 93659.78768,
            "minimum": 93171.28768,
            "name": "X",
            "position": 0,
            "stddev": 134.5182528,
            "variance": 18095.16033
          },
          {
            "average": 2020737.237,
            "count": 5151545,
            "maximum": 2020985.216,
            "minimum": 2020504.376,
            "name": "Y",
            "position": 1,
            "stddev": 130.9540352,
            "variance": 17148.95934
          },
          {
            "average": 699.5760482,
            "count": 5151545,
            "maximum": 711.7808073,
            "minimum": 670.1408073,
            "name": "Z",
            "position": 2,
            "stddev": 7.892339629,
            "variance": 62.28902482
          },
          {
            "average": 54165.94968,
            "count": 5151545,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 3953.903458,
            "variance": 15633352.56
          },
          {
            "average": 1.000000388,
            "count": 5151545,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006230834369,
            "variance": 3.882329693e-07
          },
          {
            "average": 1.000000776,
            "count": 5151545,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008811728758,
            "variance": 7.764656371e-07
          },
          {
            "average": 0.5073206193,
            "count": 5151545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999464542,
            "variance": 0.2499464571
          },
          {
            "average": 0.0004680149353,
            "count": 5151545,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02162859191,
            "variance": 0.0004677959882
          },
          {
            "average": 1.241419613,
            "count": 5151545,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4286951379,
            "variance": 0.1837795213
          },
          {
            "average": -2.82104276,
            "count": 5151545,
            "maximum": 21.27000046,
            "minimum": -20.90999985,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.7932103,
            "variance": 116.4933887
          },
          {
            "average": 0.4867795972,
            "count": 5151545,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998252389,
            "variance": 0.2498252694
          },
          {
            "average": 413.2143021,
            "count": 5151545,
            "maximum": 633,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 106.6833157,
            "variance": 11381.32985
          },
          {
            "average": 249236260.1,
            "count": 5151545,
            "maximum": 249243089.4,
            "minimum": 249234399.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3083.671593,
            "variance": 9509030.494
          },
          {
            "average": 0.4867795972,
            "count": 5151545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998252389,
            "variance": 0.2498252694
          },
          {
            "average": 0,
            "count": 5151545,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5151545,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5151545,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2359067037,
            "count": 5151545,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.424564207,
            "variance": 0.1802547658
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93171.28768,
          2020504.376,
          670.1408073,
          93659.78768,
          2020985.216,
          711.7808073
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93171.28767931482,
                2020504.375633026,
                670.1408072727446
              ],
              [
                93171.28767931482,
                2020985.2156330259,
                670.1408072727446
              ],
              [
                93659.78767931482,
                2020985.2156330259,
                711.7808072727447
              ],
              [
                93659.78767931482,
                2020504.375633026,
                711.7808072727447
              ],
              [
                93171.28767931482,
                2020504.375633026,
                670.1408072727446
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:58:09+00:00",
        "end_time": "2019-08-07T17:33:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000269.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000269.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000269.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000269.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7778932,
            68.13113235,
            670.1408073,
            -151.7658658,
            68.13562567,
            711.7808073
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77789321816283,
                  68.13128049705125,
                  670.1408072727446
                ],
                [
                  -151.77750958085988,
                  68.13562566881181,
                  670.1408072727446
                ],
                [
                  -151.76586576022856,
                  68.1354774949451,
                  711.7808072727447
                ],
                [
                  -151.76625140441564,
                  68.1311323510776,
                  711.7808072727447
                ],
                [
                  -151.77789321816283,
                  68.13128049705125,
                  670.1408072727446
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000269.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000269.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:58:09Z",
            "pc:count": 5151545,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93421.46435,
                "count": 5151545,
                "maximum": 93659.78768,
                "minimum": 93171.28768,
                "name": "X",
                "position": 0,
                "stddev": 134.5182528,
                "variance": 18095.16033
              },
              {
                "average": 2020737.237,
                "count": 5151545,
                "maximum": 2020985.216,
                "minimum": 2020504.376,
                "name": "Y",
                "position": 1,
                "stddev": 130.9540352,
                "variance": 17148.95934
              },
              {
                "average": 699.5760482,
                "count": 5151545,
                "maximum": 711.7808073,
                "minimum": 670.1408073,
                "name": "Z",
                "position": 2,
                "stddev": 7.892339629,
                "variance": 62.28902482
              },
              {
                "average": 54165.94968,
                "count": 5151545,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 3953.903458,
                "variance": 15633352.56
              },
              {
                "average": 1.000000388,
                "count": 5151545,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006230834369,
                "variance": 3.882329693e-07
              },
              {
                "average": 1.000000776,
                "count": 5151545,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008811728758,
                "variance": 7.764656371e-07
              },
              {
                "average": 0.5073206193,
                "count": 5151545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999464542,
                "variance": 0.2499464571
              },
              {
                "average": 0.0004680149353,
                "count": 5151545,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02162859191,
                "variance": 0.0004677959882
              },
              {
                "average": 1.241419613,
                "count": 5151545,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4286951379,
                "variance": 0.1837795213
              },
              {
                "average": -2.82104276,
                "count": 5151545,
                "maximum": 21.27000046,
                "minimum": -20.90999985,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.7932103,
                "variance": 116.4933887
              },
              {
                "average": 0.4867795972,
                "count": 5151545,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998252389,
                "variance": 0.2498252694
              },
              {
                "average": 413.2143021,
                "count": 5151545,
                "maximum": 633,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 106.6833157,
                "variance": 11381.32985
              },
              {
                "average": 249236260.1,
                "count": 5151545,
                "maximum": 249243089.4,
                "minimum": 249234399.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3083.671593,
                "variance": 9509030.494
              },
              {
                "average": 0.4867795972,
                "count": 5151545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998252389,
                "variance": 0.2498252694
              },
              {
                "average": 0,
                "count": 5151545,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5151545,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5151545,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2359067037,
                "count": 5151545,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.424564207,
                "variance": 0.1802547658
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93171.28768,
              2020504.376,
              670.1408073,
              93659.78768,
              2020985.216,
              711.7808073
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93171.28767931482,
                    2020504.375633026,
                    670.1408072727446
                  ],
                  [
                    93171.28767931482,
                    2020985.2156330259,
                    670.1408072727446
                  ],
                  [
                    93659.78767931482,
                    2020985.2156330259,
                    711.7808072727447
                  ],
                  [
                    93659.78767931482,
                    2020504.375633026,
                    711.7808072727447
                  ],
                  [
                    93171.28767931482,
                    2020504.375633026,
                    670.1408072727446
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:58:09+00:00",
            "end_time": "2019-08-07T17:33:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000295.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77821095248004,
              68.13537830657721,
              674.8433664510657
            ],
            [
              -151.77782730757133,
              68.13972354339079,
              674.8433664510657
            ],
            [
              -151.76618063607376,
              68.1395753762222,
              700.3633664510656
            ],
            [
              -151.76656628868562,
              68.13523016730664,
              700.3633664510656
            ],
            [
              -151.77821095248004,
              68.13537830657721,
              674.8433664510657
            ]
          ]
        ]
      },
      "bbox": [
        -151.778211,
        68.13523017,
        674.8433665,
        -151.7661806,
        68.13972354,
        700.3633665
      ],
      "properties": {
        "datetime": "2019-08-07T19:58:09Z",
        "pc:count": 5372666,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93385.29045,
            "count": 5372666,
            "maximum": 93631.35082,
            "minimum": 93142.81082,
            "name": "X",
            "position": 0,
            "stddev": 134.8025905,
            "variance": 18171.7384
          },
          {
            "average": 2021206.117,
            "count": 5372666,
            "maximum": 2021437.729,
            "minimum": 2020956.889,
            "name": "Y",
            "position": 1,
            "stddev": 129.8945712,
            "variance": 16872.59963
          },
          {
            "average": 689.1003245,
            "count": 5372666,
            "maximum": 700.3633665,
            "minimum": 674.8433665,
            "name": "Z",
            "position": 2,
            "stddev": 4.635210489,
            "variance": 21.48517627
          },
          {
            "average": 51481.1628,
            "count": 5372666,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 6022.850648,
            "variance": 36274729.93
          },
          {
            "average": 1.000000931,
            "count": 5372666,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000964694759,
            "variance": 9.30635978e-07
          },
          {
            "average": 1.000001861,
            "count": 5372666,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001364283777,
            "variance": 1.861270224e-06
          },
          {
            "average": 0.4978917357,
            "count": 5372666,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999956017,
            "variance": 0.2499956018
          },
          {
            "average": 0.0004638293168,
            "count": 5372666,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02153170373,
            "variance": 0.0004636142654
          },
          {
            "average": 1.237508529,
            "count": 5372666,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4310156906,
            "variance": 0.1857745255
          },
          {
            "average": 1.529820075,
            "count": 5372666,
            "maximum": 21.45000076,
            "minimum": -20.83200073,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.14758831,
            "variance": 124.2687252
          },
          {
            "average": 0.491046903,
            "count": 5372666,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999198822,
            "variance": 0.2499198886
          },
          {
            "average": 411.5611899,
            "count": 5372666,
            "maximum": 633,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 105.5640006,
            "variance": 11143.75822
          },
          {
            "average": 249236263.2,
            "count": 5372666,
            "maximum": 249243089,
            "minimum": 249234407.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3154.859021,
            "variance": 9953135.441
          },
          {
            "average": 0.491046903,
            "count": 5372666,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999198822,
            "variance": 0.2499198886
          },
          {
            "average": 0,
            "count": 5372666,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5372666,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5372666,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2431671725,
            "count": 5372666,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4289952598,
            "variance": 0.184036933
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93142.81082,
          2020956.889,
          674.8433665,
          93631.35082,
          2021437.729,
          700.3633665
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93142.81082279394,
                2020956.8893430582,
                674.8433664510657
              ],
              [
                93142.81082279394,
                2021437.729343058,
                674.8433664510657
              ],
              [
                93631.35082279395,
                2021437.729343058,
                700.3633664510656
              ],
              [
                93631.35082279395,
                2020956.8893430582,
                700.3633664510656
              ],
              [
                93142.81082279394,
                2020956.8893430582,
                674.8433664510657
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:58:09+00:00",
        "end_time": "2019-08-07T17:33:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000295.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000295.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000295.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000295.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.778211,
            68.13523017,
            674.8433665,
            -151.7661806,
            68.13972354,
            700.3633665
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77821095248004,
                  68.13537830657721,
                  674.8433664510657
                ],
                [
                  -151.77782730757133,
                  68.13972354339079,
                  674.8433664510657
                ],
                [
                  -151.76618063607376,
                  68.1395753762222,
                  700.3633664510656
                ],
                [
                  -151.76656628868562,
                  68.13523016730664,
                  700.3633664510656
                ],
                [
                  -151.77821095248004,
                  68.13537830657721,
                  674.8433664510657
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000295.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000295.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:58:09Z",
            "pc:count": 5372666,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93385.29045,
                "count": 5372666,
                "maximum": 93631.35082,
                "minimum": 93142.81082,
                "name": "X",
                "position": 0,
                "stddev": 134.8025905,
                "variance": 18171.7384
              },
              {
                "average": 2021206.117,
                "count": 5372666,
                "maximum": 2021437.729,
                "minimum": 2020956.889,
                "name": "Y",
                "position": 1,
                "stddev": 129.8945712,
                "variance": 16872.59963
              },
              {
                "average": 689.1003245,
                "count": 5372666,
                "maximum": 700.3633665,
                "minimum": 674.8433665,
                "name": "Z",
                "position": 2,
                "stddev": 4.635210489,
                "variance": 21.48517627
              },
              {
                "average": 51481.1628,
                "count": 5372666,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 6022.850648,
                "variance": 36274729.93
              },
              {
                "average": 1.000000931,
                "count": 5372666,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000964694759,
                "variance": 9.30635978e-07
              },
              {
                "average": 1.000001861,
                "count": 5372666,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001364283777,
                "variance": 1.861270224e-06
              },
              {
                "average": 0.4978917357,
                "count": 5372666,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999956017,
                "variance": 0.2499956018
              },
              {
                "average": 0.0004638293168,
                "count": 5372666,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02153170373,
                "variance": 0.0004636142654
              },
              {
                "average": 1.237508529,
                "count": 5372666,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4310156906,
                "variance": 0.1857745255
              },
              {
                "average": 1.529820075,
                "count": 5372666,
                "maximum": 21.45000076,
                "minimum": -20.83200073,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.14758831,
                "variance": 124.2687252
              },
              {
                "average": 0.491046903,
                "count": 5372666,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999198822,
                "variance": 0.2499198886
              },
              {
                "average": 411.5611899,
                "count": 5372666,
                "maximum": 633,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 105.5640006,
                "variance": 11143.75822
              },
              {
                "average": 249236263.2,
                "count": 5372666,
                "maximum": 249243089,
                "minimum": 249234407.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3154.859021,
                "variance": 9953135.441
              },
              {
                "average": 0.491046903,
                "count": 5372666,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999198822,
                "variance": 0.2499198886
              },
              {
                "average": 0,
                "count": 5372666,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5372666,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5372666,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2431671725,
                "count": 5372666,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4289952598,
                "variance": 0.184036933
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93142.81082,
              2020956.889,
              674.8433665,
              93631.35082,
              2021437.729,
              700.3633665
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93142.81082279394,
                    2020956.8893430582,
                    674.8433664510657
                  ],
                  [
                    93142.81082279394,
                    2021437.729343058,
                    674.8433664510657
                  ],
                  [
                    93631.35082279395,
                    2021437.729343058,
                    700.3633664510656
                  ],
                  [
                    93631.35082279395,
                    2020956.8893430582,
                    700.3633664510656
                  ],
                  [
                    93142.81082279394,
                    2020956.8893430582,
                    674.8433664510657
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:58:09+00:00",
            "end_time": "2019-08-07T17:33:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000354.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70186785165038,
              68.1443819016483,
              673.6906971110591
            ],
            [
              -151.7014708874848,
              68.14872710998513,
              673.6906971110591
            ],
            [
              -151.68982050756586,
              68.14857386181474,
              709.750697111059
            ],
            [
              -151.6902194805552,
              68.14422868234567,
              709.750697111059
            ],
            [
              -151.70186785165038,
              68.1443819016483,
              673.6906971110591
            ]
          ]
        ]
      },
      "bbox": [
        -151.7018679,
        68.14422868,
        673.6906971,
        -151.6898205,
        68.14872711,
        709.7506971
      ],
      "properties": {
        "datetime": "2019-08-07T19:45:58Z",
        "pc:count": 4492120,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96553.1556,
            "count": 4492120,
            "maximum": 96796.13207,
            "minimum": 96307.59207,
            "name": "X",
            "position": 0,
            "stddev": 130.4488571,
            "variance": 17016.90433
          },
          {
            "average": 2022293.176,
            "count": 4492120,
            "maximum": 2022541.808,
            "minimum": 2022060.968,
            "name": "Y",
            "position": 1,
            "stddev": 131.3410129,
            "variance": 17250.46166
          },
          {
            "average": 689.4614212,
            "count": 4492120,
            "maximum": 709.7506971,
            "minimum": 673.6906971,
            "name": "Z",
            "position": 2,
            "stddev": 6.346495255,
            "variance": 40.27800202
          },
          {
            "average": 49538.14633,
            "count": 4492120,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 8181.807938,
            "variance": 66941981.14
          },
          {
            "average": 1.000043632,
            "count": 4492120,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006605305892,
            "variance": 4.363006593e-05
          },
          {
            "average": 1.000087264,
            "count": 4492120,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009341109375,
            "variance": 8.725632436e-05
          },
          {
            "average": 0.4990948594,
            "count": 4492120,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992364,
            "variance": 0.2499992364
          },
          {
            "average": 0.0004038182417,
            "count": 4492120,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02009117374,
            "variance": 0.0004036552624
          },
          {
            "average": 1.274242006,
            "count": 4492120,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4791922069,
            "variance": 0.2296251711
          },
          {
            "average": -1.922574176,
            "count": 4492120,
            "maximum": 21.43799973,
            "minimum": -21.25200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.19998408,
            "variance": 104.0396752
          },
          {
            "average": 0.4795504127,
            "count": 4492120,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499581695,
            "variance": 0.2495818699
          },
          {
            "average": 405.5093985,
            "count": 4492120,
            "maximum": 631,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 110.1148045,
            "variance": 12125.27017
          },
          {
            "average": 249234888.1,
            "count": 4492120,
            "maximum": 249242358.2,
            "minimum": 249232918.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3476.420484,
            "variance": 12085499.38
          },
          {
            "average": 0.4795504127,
            "count": 4492120,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499581695,
            "variance": 0.2495818699
          },
          {
            "average": 0,
            "count": 4492120,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4492120,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4492120,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1674563458,
            "count": 4492120,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3733828452,
            "variance": 0.1394147491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96307.59207,
          2022060.968,
          673.6906971,
          96796.13207,
          2022541.808,
          709.7506971
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96307.59206770116,
                2022060.9684907985,
                673.6906971110591
              ],
              [
                96307.59206770116,
                2022541.8084907983,
                673.6906971110591
              ],
              [
                96796.13206770117,
                2022541.8084907983,
                709.750697111059
              ],
              [
                96796.13206770117,
                2022060.9684907985,
                709.750697111059
              ],
              [
                96307.59206770116,
                2022060.9684907985,
                673.6906971110591
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:45:58+00:00",
        "end_time": "2019-08-07T17:08:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000354.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000354.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000354.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000354.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7018679,
            68.14422868,
            673.6906971,
            -151.6898205,
            68.14872711,
            709.7506971
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70186785165038,
                  68.1443819016483,
                  673.6906971110591
                ],
                [
                  -151.7014708874848,
                  68.14872710998513,
                  673.6906971110591
                ],
                [
                  -151.68982050756586,
                  68.14857386181474,
                  709.750697111059
                ],
                [
                  -151.6902194805552,
                  68.14422868234567,
                  709.750697111059
                ],
                [
                  -151.70186785165038,
                  68.1443819016483,
                  673.6906971110591
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000354.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000354.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:45:58Z",
            "pc:count": 4492120,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96553.1556,
                "count": 4492120,
                "maximum": 96796.13207,
                "minimum": 96307.59207,
                "name": "X",
                "position": 0,
                "stddev": 130.4488571,
                "variance": 17016.90433
              },
              {
                "average": 2022293.176,
                "count": 4492120,
                "maximum": 2022541.808,
                "minimum": 2022060.968,
                "name": "Y",
                "position": 1,
                "stddev": 131.3410129,
                "variance": 17250.46166
              },
              {
                "average": 689.4614212,
                "count": 4492120,
                "maximum": 709.7506971,
                "minimum": 673.6906971,
                "name": "Z",
                "position": 2,
                "stddev": 6.346495255,
                "variance": 40.27800202
              },
              {
                "average": 49538.14633,
                "count": 4492120,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 8181.807938,
                "variance": 66941981.14
              },
              {
                "average": 1.000043632,
                "count": 4492120,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006605305892,
                "variance": 4.363006593e-05
              },
              {
                "average": 1.000087264,
                "count": 4492120,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009341109375,
                "variance": 8.725632436e-05
              },
              {
                "average": 0.4990948594,
                "count": 4492120,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992364,
                "variance": 0.2499992364
              },
              {
                "average": 0.0004038182417,
                "count": 4492120,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02009117374,
                "variance": 0.0004036552624
              },
              {
                "average": 1.274242006,
                "count": 4492120,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4791922069,
                "variance": 0.2296251711
              },
              {
                "average": -1.922574176,
                "count": 4492120,
                "maximum": 21.43799973,
                "minimum": -21.25200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.19998408,
                "variance": 104.0396752
              },
              {
                "average": 0.4795504127,
                "count": 4492120,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499581695,
                "variance": 0.2495818699
              },
              {
                "average": 405.5093985,
                "count": 4492120,
                "maximum": 631,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 110.1148045,
                "variance": 12125.27017
              },
              {
                "average": 249234888.1,
                "count": 4492120,
                "maximum": 249242358.2,
                "minimum": 249232918.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3476.420484,
                "variance": 12085499.38
              },
              {
                "average": 0.4795504127,
                "count": 4492120,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499581695,
                "variance": 0.2495818699
              },
              {
                "average": 0,
                "count": 4492120,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4492120,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4492120,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1674563458,
                "count": 4492120,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3733828452,
                "variance": 0.1394147491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96307.59207,
              2022060.968,
              673.6906971,
              96796.13207,
              2022541.808,
              709.7506971
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96307.59206770116,
                    2022060.9684907985,
                    673.6906971110591
                  ],
                  [
                    96307.59206770116,
                    2022541.8084907983,
                    673.6906971110591
                  ],
                  [
                    96796.13206770117,
                    2022541.8084907983,
                    709.750697111059
                  ],
                  [
                    96796.13206770117,
                    2022060.9684907985,
                    709.750697111059
                  ],
                  [
                    96307.59206770116,
                    2022060.9684907985,
                    673.6906971110591
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:45:58+00:00",
            "end_time": "2019-08-07T17:08:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000326.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7235528684136,
              68.14005747448208,
              641.2438531269654
            ],
            [
              -151.72315976512616,
              68.14440212146488,
              641.2438531269654
            ],
            [
              -151.71151316280165,
              68.1442503424772,
              676.4838531269654
            ],
            [
              -151.71190827373417,
              68.13990572407542,
              676.4838531269654
            ],
            [
              -151.7235528684136,
              68.14005747448208,
              641.2438531269654
            ]
          ]
        ]
      },
      "bbox": [
        -151.7235529,
        68.13990572,
        641.2438531,
        -151.7115132,
        68.14440212,
        676.4838531
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:15Z",
        "pc:count": 4175391,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95657.09664,
            "count": 4175391,
            "maximum": 95904.0486,
            "minimum": 95415.5886,
            "name": "X",
            "position": 0,
            "stddev": 132.0301743,
            "variance": 17431.96693
          },
          {
            "average": 2021793.887,
            "count": 4175391,
            "maximum": 2022032.469,
            "minimum": 2021551.689,
            "name": "Y",
            "position": 1,
            "stddev": 132.1713273,
            "variance": 17469.25977
          },
          {
            "average": 659.0442707,
            "count": 4175391,
            "maximum": 676.4838531,
            "minimum": 641.2438531,
            "name": "Z",
            "position": 2,
            "stddev": 8.650434409,
            "variance": 74.83001546
          },
          {
            "average": 46647.1109,
            "count": 4175391,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11338.12067,
            "variance": 128552980.3
          },
          {
            "average": 1.003753421,
            "count": 4175391,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06134170299,
            "variance": 0.003762804525
          },
          {
            "average": 1.007500375,
            "count": 4175391,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08668641272,
            "variance": 0.00751453415
          },
          {
            "average": 0.4974350905,
            "count": 4175391,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999934811,
            "variance": 0.2499934811
          },
          {
            "average": 0.0005086948743,
            "count": 4175391,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02254853045,
            "variance": 0.0005084362256
          },
          {
            "average": 1.353716335,
            "count": 4175391,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6011039771,
            "variance": 0.3613259912
          },
          {
            "average": 3.660947674,
            "count": 4175391,
            "maximum": 21.59399986,
            "minimum": -20.79599953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.94730011,
            "variance": 119.8433796
          },
          {
            "average": 0.5134276047,
            "count": 4175391,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998197268,
            "variance": 0.2498197593
          },
          {
            "average": 424.2981342,
            "count": 4175391,
            "maximum": 631,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.1907235,
            "variance": 14445.81002
          },
          {
            "average": 249235808.8,
            "count": 4175391,
            "maximum": 249242375.2,
            "minimum": 249233439.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3713.452274,
            "variance": 13789727.79
          },
          {
            "average": 0.5134276047,
            "count": 4175391,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998197268,
            "variance": 0.2498197593
          },
          {
            "average": 0,
            "count": 4175391,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4175391,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4175391,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.246481587,
            "count": 4175391,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4309622475,
            "variance": 0.1857284587
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95415.5886,
          2021551.689,
          641.2438531,
          95904.0486,
          2022032.469,
          676.4838531
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95415.58860352165,
                2021551.6893732536,
                641.2438531269654
              ],
              [
                95415.58860352165,
                2022032.4693732534,
                641.2438531269654
              ],
              [
                95904.04860352165,
                2022032.4693732534,
                676.4838531269654
              ],
              [
                95904.04860352165,
                2021551.6893732536,
                676.4838531269654
              ],
              [
                95415.58860352165,
                2021551.6893732536,
                641.2438531269654
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:15+00:00",
        "end_time": "2019-08-07T17:17:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000326.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000326.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000326.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000326.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7235529,
            68.13990572,
            641.2438531,
            -151.7115132,
            68.14440212,
            676.4838531
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7235528684136,
                  68.14005747448208,
                  641.2438531269654
                ],
                [
                  -151.72315976512616,
                  68.14440212146488,
                  641.2438531269654
                ],
                [
                  -151.71151316280165,
                  68.1442503424772,
                  676.4838531269654
                ],
                [
                  -151.71190827373417,
                  68.13990572407542,
                  676.4838531269654
                ],
                [
                  -151.7235528684136,
                  68.14005747448208,
                  641.2438531269654
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000326.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000326.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:15Z",
            "pc:count": 4175391,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95657.09664,
                "count": 4175391,
                "maximum": 95904.0486,
                "minimum": 95415.5886,
                "name": "X",
                "position": 0,
                "stddev": 132.0301743,
                "variance": 17431.96693
              },
              {
                "average": 2021793.887,
                "count": 4175391,
                "maximum": 2022032.469,
                "minimum": 2021551.689,
                "name": "Y",
                "position": 1,
                "stddev": 132.1713273,
                "variance": 17469.25977
              },
              {
                "average": 659.0442707,
                "count": 4175391,
                "maximum": 676.4838531,
                "minimum": 641.2438531,
                "name": "Z",
                "position": 2,
                "stddev": 8.650434409,
                "variance": 74.83001546
              },
              {
                "average": 46647.1109,
                "count": 4175391,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11338.12067,
                "variance": 128552980.3
              },
              {
                "average": 1.003753421,
                "count": 4175391,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06134170299,
                "variance": 0.003762804525
              },
              {
                "average": 1.007500375,
                "count": 4175391,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08668641272,
                "variance": 0.00751453415
              },
              {
                "average": 0.4974350905,
                "count": 4175391,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999934811,
                "variance": 0.2499934811
              },
              {
                "average": 0.0005086948743,
                "count": 4175391,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02254853045,
                "variance": 0.0005084362256
              },
              {
                "average": 1.353716335,
                "count": 4175391,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6011039771,
                "variance": 0.3613259912
              },
              {
                "average": 3.660947674,
                "count": 4175391,
                "maximum": 21.59399986,
                "minimum": -20.79599953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.94730011,
                "variance": 119.8433796
              },
              {
                "average": 0.5134276047,
                "count": 4175391,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998197268,
                "variance": 0.2498197593
              },
              {
                "average": 424.2981342,
                "count": 4175391,
                "maximum": 631,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.1907235,
                "variance": 14445.81002
              },
              {
                "average": 249235808.8,
                "count": 4175391,
                "maximum": 249242375.2,
                "minimum": 249233439.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3713.452274,
                "variance": 13789727.79
              },
              {
                "average": 0.5134276047,
                "count": 4175391,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998197268,
                "variance": 0.2498197593
              },
              {
                "average": 0,
                "count": 4175391,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4175391,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4175391,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.246481587,
                "count": 4175391,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4309622475,
                "variance": 0.1857284587
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95415.5886,
              2021551.689,
              641.2438531,
              95904.0486,
              2022032.469,
              676.4838531
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95415.58860352165,
                    2021551.6893732536,
                    641.2438531269654
                  ],
                  [
                    95415.58860352165,
                    2022032.4693732534,
                    641.2438531269654
                  ],
                  [
                    95904.04860352165,
                    2022032.4693732534,
                    676.4838531269654
                  ],
                  [
                    95904.04860352165,
                    2021551.6893732536,
                    676.4838531269654
                  ],
                  [
                    95415.58860352165,
                    2021551.6893732536,
                    641.2438531269654
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:15+00:00",
            "end_time": "2019-08-07T17:17:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000272.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74492116012343,
              68.13163164139404,
              628.890106487718
            ],
            [
              -151.74453185947112,
              68.13597638444578,
              628.890106487718
            ],
            [
              -151.732889979519,
              68.13582604303315,
              656.310106487718
            ],
            [
              -151.73328128648072,
              68.1314813282802,
              656.310106487718
            ],
            [
              -151.74492116012343,
              68.13163164139404,
              628.890106487718
            ]
          ]
        ]
      },
      "bbox": [
        -151.7449212,
        68.13148133,
        628.8901065,
        -151.73289,
        68.13597638,
        656.3101065
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:34Z",
        "pc:count": 4657394,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94801.46371,
            "count": 4657394,
            "maximum": 95040.35559,
            "minimum": 94551.93559,
            "name": "X",
            "position": 0,
            "stddev": 134.8965782,
            "variance": 18197.0868
          },
          {
            "average": 2020826.913,
            "count": 4657394,
            "maximum": 2021070.591,
            "minimum": 2020589.791,
            "name": "Y",
            "position": 1,
            "stddev": 131.2377196,
            "variance": 17223.33904
          },
          {
            "average": 633.6596748,
            "count": 4657394,
            "maximum": 656.3101065,
            "minimum": 628.8901065,
            "name": "Z",
            "position": 2,
            "stddev": 2.380336649,
            "variance": 5.666002561
          },
          {
            "average": 35924.03157,
            "count": 4657394,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11811.9021,
            "variance": 139521031.2
          },
          {
            "average": 1.064337481,
            "count": 4657394,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.2484741202,
            "variance": 0.0617393884
          },
          {
            "average": 1.12864748,
            "count": 4657394,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.3416363035,
            "variance": 0.1167153639
          },
          {
            "average": 0.5005507372,
            "count": 4657394,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997504,
            "variance": 0.2499997504
          },
          {
            "average": 0.00050757999,
            "count": 4657394,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02252381987,
            "variance": 0.0005073224615
          },
          {
            "average": 1.677998683,
            "count": 4657394,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.017606531,
            "variance": 1.035523052
          },
          {
            "average": 3.37378861,
            "count": 4657394,
            "maximum": 21.66600037,
            "minimum": -20.81399918,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.88151755,
            "variance": 118.4074243
          },
          {
            "average": 0.5269279344,
            "count": 4657394,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992744134,
            "variance": 0.2492749399
          },
          {
            "average": 416.4709636,
            "count": 4657394,
            "maximum": 631,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 113.1856808,
            "variance": 12810.99834
          },
          {
            "average": 249235806.1,
            "count": 4657394,
            "maximum": 249242394.7,
            "minimum": 249233755.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3362.969553,
            "variance": 11309564.21
          },
          {
            "average": 0.5269279344,
            "count": 4657394,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992744134,
            "variance": 0.2492749399
          },
          {
            "average": 0,
            "count": 4657394,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4657394,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4657394,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2415885364,
            "count": 4657394,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4280462064,
            "variance": 0.1832235548
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94551.93559,
          2020589.791,
          628.8901065,
          95040.35559,
          2021070.591,
          656.3101065
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94551.935594824,
                2020589.7908327943,
                628.890106487718
              ],
              [
                94551.935594824,
                2021070.590832794,
                628.890106487718
              ],
              [
                95040.35559482401,
                2021070.590832794,
                656.310106487718
              ],
              [
                95040.35559482401,
                2020589.7908327943,
                656.310106487718
              ],
              [
                94551.935594824,
                2020589.7908327943,
                628.890106487718
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:34+00:00",
        "end_time": "2019-08-07T17:22:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000272.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000272.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000272.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000272.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7449212,
            68.13148133,
            628.8901065,
            -151.73289,
            68.13597638,
            656.3101065
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74492116012343,
                  68.13163164139404,
                  628.890106487718
                ],
                [
                  -151.74453185947112,
                  68.13597638444578,
                  628.890106487718
                ],
                [
                  -151.732889979519,
                  68.13582604303315,
                  656.310106487718
                ],
                [
                  -151.73328128648072,
                  68.1314813282802,
                  656.310106487718
                ],
                [
                  -151.74492116012343,
                  68.13163164139404,
                  628.890106487718
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000272.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000272.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:34Z",
            "pc:count": 4657394,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94801.46371,
                "count": 4657394,
                "maximum": 95040.35559,
                "minimum": 94551.93559,
                "name": "X",
                "position": 0,
                "stddev": 134.8965782,
                "variance": 18197.0868
              },
              {
                "average": 2020826.913,
                "count": 4657394,
                "maximum": 2021070.591,
                "minimum": 2020589.791,
                "name": "Y",
                "position": 1,
                "stddev": 131.2377196,
                "variance": 17223.33904
              },
              {
                "average": 633.6596748,
                "count": 4657394,
                "maximum": 656.3101065,
                "minimum": 628.8901065,
                "name": "Z",
                "position": 2,
                "stddev": 2.380336649,
                "variance": 5.666002561
              },
              {
                "average": 35924.03157,
                "count": 4657394,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11811.9021,
                "variance": 139521031.2
              },
              {
                "average": 1.064337481,
                "count": 4657394,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.2484741202,
                "variance": 0.0617393884
              },
              {
                "average": 1.12864748,
                "count": 4657394,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.3416363035,
                "variance": 0.1167153639
              },
              {
                "average": 0.5005507372,
                "count": 4657394,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997504,
                "variance": 0.2499997504
              },
              {
                "average": 0.00050757999,
                "count": 4657394,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02252381987,
                "variance": 0.0005073224615
              },
              {
                "average": 1.677998683,
                "count": 4657394,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.017606531,
                "variance": 1.035523052
              },
              {
                "average": 3.37378861,
                "count": 4657394,
                "maximum": 21.66600037,
                "minimum": -20.81399918,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.88151755,
                "variance": 118.4074243
              },
              {
                "average": 0.5269279344,
                "count": 4657394,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992744134,
                "variance": 0.2492749399
              },
              {
                "average": 416.4709636,
                "count": 4657394,
                "maximum": 631,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 113.1856808,
                "variance": 12810.99834
              },
              {
                "average": 249235806.1,
                "count": 4657394,
                "maximum": 249242394.7,
                "minimum": 249233755.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3362.969553,
                "variance": 11309564.21
              },
              {
                "average": 0.5269279344,
                "count": 4657394,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992744134,
                "variance": 0.2492749399
              },
              {
                "average": 0,
                "count": 4657394,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4657394,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4657394,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2415885364,
                "count": 4657394,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4280462064,
                "variance": 0.1832235548
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94551.93559,
              2020589.791,
              628.8901065,
              95040.35559,
              2021070.591,
              656.3101065
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94551.935594824,
                    2020589.7908327943,
                    628.890106487718
                  ],
                  [
                    94551.935594824,
                    2021070.590832794,
                    628.890106487718
                  ],
                  [
                    95040.35559482401,
                    2021070.590832794,
                    656.310106487718
                  ],
                  [
                    95040.35559482401,
                    2020589.7908327943,
                    656.310106487718
                  ],
                  [
                    94551.935594824,
                    2020589.7908327943,
                    628.890106487718
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:34+00:00",
            "end_time": "2019-08-07T17:22:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000275.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71194960523778,
              68.13197626658557,
              677.1685305836155
            ],
            [
              -151.71155475734548,
              68.13631931466962,
              677.1685305836155
            ],
            [
              -151.69991053412554,
              68.13616675014978,
              725.9285305836155
            ],
            [
              -151.70030738790453,
              68.1318237307723,
              725.9285305836155
            ],
            [
              -151.71194960523778,
              68.13197626658557,
              677.1685305836155
            ]
          ]
        ]
      },
      "bbox": [
        -151.7119496,
        68.13182373,
        677.1685306,
        -151.6999105,
        68.13631931,
        725.9285306
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:12Z",
        "pc:count": 4685810,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96185.22248,
            "count": 4685810,
            "maximum": 96421.04541,
            "minimum": 95932.52541,
            "name": "X",
            "position": 0,
            "stddev": 132.9634048,
            "variance": 17679.267
          },
          {
            "average": 2020913.495,
            "count": 4685810,
            "maximum": 2021155.789,
            "minimum": 2020675.169,
            "name": "Y",
            "position": 1,
            "stddev": 132.1467435,
            "variance": 17462.76182
          },
          {
            "average": 700.8164082,
            "count": 4685810,
            "maximum": 725.9285306,
            "minimum": 677.1685306,
            "name": "Z",
            "position": 2,
            "stddev": 10.2137341,
            "variance": 104.3203642
          },
          {
            "average": 50911.8225,
            "count": 4685810,
            "maximum": 65535,
            "minimum": 2149,
            "name": "Intensity",
            "position": 3,
            "stddev": 6921.650211,
            "variance": 47909241.64
          },
          {
            "average": 1.000044389,
            "count": 4685810,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006662385176,
            "variance": 4.438737623e-05
          },
          {
            "average": 1.000088779,
            "count": 4685810,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009421826343,
            "variance": 8.877081163e-05
          },
          {
            "average": 0.4962858076,
            "count": 4685810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999862579,
            "variance": 0.2499862581
          },
          {
            "average": 0.0004556309368,
            "count": 4685810,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02134065216,
            "variance": 0.0004554234344
          },
          {
            "average": 1.233973635,
            "count": 4685810,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4606815769,
            "variance": 0.2122275153
          },
          {
            "average": 3.595390557,
            "count": 4685810,
            "maximum": 21.79800034,
            "minimum": -21.18600082,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.7727964,
            "variance": 116.0531423
          },
          {
            "average": 0.5080109949,
            "count": 4685810,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999358732,
            "variance": 0.2499358773
          },
          {
            "average": 420.8482954,
            "count": 4685810,
            "maximum": 630,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 119.0458761,
            "variance": 14171.92061
          },
          {
            "average": 249235397.3,
            "count": 4685810,
            "maximum": 249242012,
            "minimum": 249233086.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3525.486342,
            "variance": 12429053.95
          },
          {
            "average": 0.5080109949,
            "count": 4685810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999358732,
            "variance": 0.2499358773
          },
          {
            "average": 0,
            "count": 4685810,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4685810,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4685810,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2530749219,
            "count": 4685810,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4347735573,
            "variance": 0.1890280462
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95932.52541,
          2020675.169,
          677.1685306,
          96421.04541,
          2021155.789,
          725.9285306
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95932.52541253391,
                2020675.1694705342,
                677.1685305836155
              ],
              [
                95932.52541253391,
                2021155.7894705343,
                677.1685305836155
              ],
              [
                96421.0454125339,
                2021155.7894705343,
                725.9285305836155
              ],
              [
                96421.0454125339,
                2020675.1694705342,
                725.9285305836155
              ],
              [
                95932.52541253391,
                2020675.1694705342,
                677.1685305836155
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:12+00:00",
        "end_time": "2019-08-07T17:11:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000275.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000275.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000275.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000275.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7119496,
            68.13182373,
            677.1685306,
            -151.6999105,
            68.13631931,
            725.9285306
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71194960523778,
                  68.13197626658557,
                  677.1685305836155
                ],
                [
                  -151.71155475734548,
                  68.13631931466962,
                  677.1685305836155
                ],
                [
                  -151.69991053412554,
                  68.13616675014978,
                  725.9285305836155
                ],
                [
                  -151.70030738790453,
                  68.1318237307723,
                  725.9285305836155
                ],
                [
                  -151.71194960523778,
                  68.13197626658557,
                  677.1685305836155
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000275.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000275.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:12Z",
            "pc:count": 4685810,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96185.22248,
                "count": 4685810,
                "maximum": 96421.04541,
                "minimum": 95932.52541,
                "name": "X",
                "position": 0,
                "stddev": 132.9634048,
                "variance": 17679.267
              },
              {
                "average": 2020913.495,
                "count": 4685810,
                "maximum": 2021155.789,
                "minimum": 2020675.169,
                "name": "Y",
                "position": 1,
                "stddev": 132.1467435,
                "variance": 17462.76182
              },
              {
                "average": 700.8164082,
                "count": 4685810,
                "maximum": 725.9285306,
                "minimum": 677.1685306,
                "name": "Z",
                "position": 2,
                "stddev": 10.2137341,
                "variance": 104.3203642
              },
              {
                "average": 50911.8225,
                "count": 4685810,
                "maximum": 65535,
                "minimum": 2149,
                "name": "Intensity",
                "position": 3,
                "stddev": 6921.650211,
                "variance": 47909241.64
              },
              {
                "average": 1.000044389,
                "count": 4685810,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006662385176,
                "variance": 4.438737623e-05
              },
              {
                "average": 1.000088779,
                "count": 4685810,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009421826343,
                "variance": 8.877081163e-05
              },
              {
                "average": 0.4962858076,
                "count": 4685810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999862579,
                "variance": 0.2499862581
              },
              {
                "average": 0.0004556309368,
                "count": 4685810,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02134065216,
                "variance": 0.0004554234344
              },
              {
                "average": 1.233973635,
                "count": 4685810,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4606815769,
                "variance": 0.2122275153
              },
              {
                "average": 3.595390557,
                "count": 4685810,
                "maximum": 21.79800034,
                "minimum": -21.18600082,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.7727964,
                "variance": 116.0531423
              },
              {
                "average": 0.5080109949,
                "count": 4685810,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999358732,
                "variance": 0.2499358773
              },
              {
                "average": 420.8482954,
                "count": 4685810,
                "maximum": 630,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 119.0458761,
                "variance": 14171.92061
              },
              {
                "average": 249235397.3,
                "count": 4685810,
                "maximum": 249242012,
                "minimum": 249233086.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3525.486342,
                "variance": 12429053.95
              },
              {
                "average": 0.5080109949,
                "count": 4685810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999358732,
                "variance": 0.2499358773
              },
              {
                "average": 0,
                "count": 4685810,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4685810,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4685810,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2530749219,
                "count": 4685810,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4347735573,
                "variance": 0.1890280462
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95932.52541,
              2020675.169,
              677.1685306,
              96421.04541,
              2021155.789,
              725.9285306
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95932.52541253391,
                    2020675.1694705342,
                    677.1685305836155
                  ],
                  [
                    95932.52541253391,
                    2021155.7894705343,
                    677.1685305836155
                  ],
                  [
                    96421.0454125339,
                    2021155.7894705343,
                    725.9285305836155
                  ],
                  [
                    96421.0454125339,
                    2020675.1694705342,
                    725.9285305836155
                  ],
                  [
                    95932.52541253391,
                    2020675.1694705342,
                    677.1685305836155
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:12+00:00",
            "end_time": "2019-08-07T17:11:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000244.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76658943187547,
              68.12730081109538,
              619.6559710258808
            ],
            [
              -151.76620393677203,
              68.13164553412508,
              619.6559710258808
            ],
            [
              -151.75456107011897,
              68.1314965987416,
              670.1559710258808
            ],
            [
              -151.75494857142357,
              68.12715190373974,
              670.1559710258808
            ],
            [
              -151.76658943187547,
              68.12730081109538,
              619.6559710258808
            ]
          ]
        ]
      },
      "bbox": [
        -151.7665894,
        68.1271519,
        619.655971,
        -151.7545611,
        68.13164553,
        670.155971
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:13Z",
        "pc:count": 4648337,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93898.94476,
            "count": 4648337,
            "maximum": 94148.40848,
            "minimum": 93659.86848,
            "name": "X",
            "position": 0,
            "stddev": 129.7762511,
            "variance": 16841.87534
          },
          {
            "average": 2020322.835,
            "count": 4648337,
            "maximum": 2020561.168,
            "minimum": 2020080.368,
            "name": "Y",
            "position": 1,
            "stddev": 130.6895764,
            "variance": 17079.76537
          },
          {
            "average": 631.8777927,
            "count": 4648337,
            "maximum": 670.155971,
            "minimum": 619.655971,
            "name": "Z",
            "position": 2,
            "stddev": 11.51767432,
            "variance": 132.6568218
          },
          {
            "average": 49048.41129,
            "count": 4648337,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10247.85737,
            "variance": 105018580.6
          },
          {
            "average": 1.001310791,
            "count": 4648337,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03618112039,
            "variance": 0.001309073472
          },
          {
            "average": 1.002623304,
            "count": 4648337,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05115097863,
            "variance": 0.002616422615
          },
          {
            "average": 0.4927491273,
            "count": 4648337,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999474759,
            "variance": 0.2499474786
          },
          {
            "average": 0.0004360699321,
            "count": 4648337,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0208777362,
            "variance": 0.0004358798689
          },
          {
            "average": 1.296108909,
            "count": 4648337,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5174301804,
            "variance": 0.2677339916
          },
          {
            "average": 1.570397478,
            "count": 4648337,
            "maximum": 21.79199982,
            "minimum": -20.7840004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12149797,
            "variance": 123.6877171
          },
          {
            "average": 0.5055195008,
            "count": 4648337,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499969588,
            "variance": 0.2499695889
          },
          {
            "average": 417.8532961,
            "count": 4648337,
            "maximum": 632,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 111.2240681,
            "variance": 12370.79332
          },
          {
            "average": 249236178.8,
            "count": 4648337,
            "maximum": 249242673.6,
            "minimum": 249234271.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3160.370595,
            "variance": 9987942.3
          },
          {
            "average": 0.5055195008,
            "count": 4648337,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499969588,
            "variance": 0.2499695889
          },
          {
            "average": 0,
            "count": 4648337,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4648337,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4648337,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.208089904,
            "count": 4648337,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4059415368,
            "variance": 0.1647885313
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93659.86848,
          2020080.368,
          619.655971,
          94148.40848,
          2020561.168,
          670.155971
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93659.86847753142,
                2020080.368329419,
                619.6559710258808
              ],
              [
                93659.86847753142,
                2020561.1683294189,
                619.6559710258808
              ],
              [
                94148.40847753143,
                2020561.1683294189,
                670.1559710258808
              ],
              [
                94148.40847753143,
                2020080.368329419,
                670.1559710258808
              ],
              [
                93659.86847753142,
                2020080.368329419,
                619.6559710258808
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:13+00:00",
        "end_time": "2019-08-07T17:31:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000244.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000244.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000244.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000244.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7665894,
            68.1271519,
            619.655971,
            -151.7545611,
            68.13164553,
            670.155971
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76658943187547,
                  68.12730081109538,
                  619.6559710258808
                ],
                [
                  -151.76620393677203,
                  68.13164553412508,
                  619.6559710258808
                ],
                [
                  -151.75456107011897,
                  68.1314965987416,
                  670.1559710258808
                ],
                [
                  -151.75494857142357,
                  68.12715190373974,
                  670.1559710258808
                ],
                [
                  -151.76658943187547,
                  68.12730081109538,
                  619.6559710258808
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000244.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000244.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:13Z",
            "pc:count": 4648337,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93898.94476,
                "count": 4648337,
                "maximum": 94148.40848,
                "minimum": 93659.86848,
                "name": "X",
                "position": 0,
                "stddev": 129.7762511,
                "variance": 16841.87534
              },
              {
                "average": 2020322.835,
                "count": 4648337,
                "maximum": 2020561.168,
                "minimum": 2020080.368,
                "name": "Y",
                "position": 1,
                "stddev": 130.6895764,
                "variance": 17079.76537
              },
              {
                "average": 631.8777927,
                "count": 4648337,
                "maximum": 670.155971,
                "minimum": 619.655971,
                "name": "Z",
                "position": 2,
                "stddev": 11.51767432,
                "variance": 132.6568218
              },
              {
                "average": 49048.41129,
                "count": 4648337,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10247.85737,
                "variance": 105018580.6
              },
              {
                "average": 1.001310791,
                "count": 4648337,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03618112039,
                "variance": 0.001309073472
              },
              {
                "average": 1.002623304,
                "count": 4648337,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05115097863,
                "variance": 0.002616422615
              },
              {
                "average": 0.4927491273,
                "count": 4648337,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999474759,
                "variance": 0.2499474786
              },
              {
                "average": 0.0004360699321,
                "count": 4648337,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0208777362,
                "variance": 0.0004358798689
              },
              {
                "average": 1.296108909,
                "count": 4648337,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5174301804,
                "variance": 0.2677339916
              },
              {
                "average": 1.570397478,
                "count": 4648337,
                "maximum": 21.79199982,
                "minimum": -20.7840004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12149797,
                "variance": 123.6877171
              },
              {
                "average": 0.5055195008,
                "count": 4648337,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499969588,
                "variance": 0.2499695889
              },
              {
                "average": 417.8532961,
                "count": 4648337,
                "maximum": 632,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 111.2240681,
                "variance": 12370.79332
              },
              {
                "average": 249236178.8,
                "count": 4648337,
                "maximum": 249242673.6,
                "minimum": 249234271.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3160.370595,
                "variance": 9987942.3
              },
              {
                "average": 0.5055195008,
                "count": 4648337,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499969588,
                "variance": 0.2499695889
              },
              {
                "average": 0,
                "count": 4648337,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4648337,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4648337,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.208089904,
                "count": 4648337,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4059415368,
                "variance": 0.1647885313
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93659.86848,
              2020080.368,
              619.655971,
              94148.40848,
              2020561.168,
              670.155971
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93659.86847753142,
                    2020080.368329419,
                    619.6559710258808
                  ],
                  [
                    93659.86847753142,
                    2020561.1683294189,
                    619.6559710258808
                  ],
                  [
                    94148.40847753143,
                    2020561.1683294189,
                    670.1559710258808
                  ],
                  [
                    94148.40847753143,
                    2020080.368329419,
                    670.1559710258808
                  ],
                  [
                    93659.86847753142,
                    2020080.368329419,
                    619.6559710258808
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:13+00:00",
            "end_time": "2019-08-07T17:31:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000298.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74523326725014,
              68.13572974873397,
              619.8559965198399
            ],
            [
              -151.74484400568002,
              68.14007401463807,
              619.8559965198399
            ],
            [
              -151.7331973681126,
              68.13992365465194,
              660.77599651984
            ],
            [
              -151.7335886368892,
              68.13557941705292,
              660.77599651984
            ],
            [
              -151.74523326725014,
              68.13572974873397,
              619.8559965198399
            ]
          ]
        ]
      },
      "bbox": [
        -151.7452333,
        68.13557942,
        619.8559965,
        -151.7331974,
        68.14007401,
        660.7759965
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:33Z",
        "pc:count": 4216970,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94773.47905,
            "count": 4216970,
            "maximum": 95012.00897,
            "minimum": 94523.46897,
            "name": "X",
            "position": 0,
            "stddev": 132.3565634,
            "variance": 17518.25988
          },
          {
            "average": 2021279.047,
            "count": 4216970,
            "maximum": 2021523.071,
            "minimum": 2021042.331,
            "name": "Y",
            "position": 1,
            "stddev": 129.4151187,
            "variance": 16748.27294
          },
          {
            "average": 642.5112308,
            "count": 4216970,
            "maximum": 660.7759965,
            "minimum": 619.8559965,
            "name": "Z",
            "position": 2,
            "stddev": 6.378416723,
            "variance": 40.6841999
          },
          {
            "average": 39592.13578,
            "count": 4216970,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11312.01286,
            "variance": 127961634.9
          },
          {
            "average": 1.016990398,
            "count": 4216970,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1316295859,
            "variance": 0.01732634789
          },
          {
            "average": 1.033986488,
            "count": 4216970,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1862858729,
            "variance": 0.03470242645
          },
          {
            "average": 0.4995503881,
            "count": 4216970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998571,
            "variance": 0.2499998571
          },
          {
            "average": 0.0005020192223,
            "count": 4216970,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02240016335,
            "variance": 0.000501767318
          },
          {
            "average": 1.537336524,
            "count": 4216970,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.001698946,
            "variance": 1.003400778
          },
          {
            "average": 3.48905951,
            "count": 4216970,
            "maximum": 21.55800056,
            "minimum": -21.1439991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.64118601,
            "variance": 113.2348398
          },
          {
            "average": 0.5258142695,
            "count": 4216970,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499333238,
            "variance": 0.2493336826
          },
          {
            "average": 420.8084155,
            "count": 4216970,
            "maximum": 632,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 115.9927459,
            "variance": 13454.3171
          },
          {
            "average": 249235966.3,
            "count": 4216970,
            "maximum": 249242693.7,
            "minimum": 249233764.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3478.712721,
            "variance": 12101442.19
          },
          {
            "average": 0.5258142695,
            "count": 4216970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499333238,
            "variance": 0.2493336826
          },
          {
            "average": 0,
            "count": 4216970,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4216970,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4216970,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2392597054,
            "count": 4216970,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4266316232,
            "variance": 0.1820145419
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94523.46897,
          2021042.331,
          619.8559965,
          95012.00897,
          2021523.071,
          660.7759965
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94523.46897321341,
                2021042.3307082634,
                619.8559965198399
              ],
              [
                94523.46897321341,
                2021523.0707082637,
                619.8559965198399
              ],
              [
                95012.00897321342,
                2021523.0707082637,
                660.77599651984
              ],
              [
                95012.00897321342,
                2021042.3307082634,
                660.77599651984
              ],
              [
                94523.46897321341,
                2021042.3307082634,
                619.8559965198399
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:33+00:00",
        "end_time": "2019-08-07T17:22:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000298.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000298.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000298.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000298.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7452333,
            68.13557942,
            619.8559965,
            -151.7331974,
            68.14007401,
            660.7759965
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74523326725014,
                  68.13572974873397,
                  619.8559965198399
                ],
                [
                  -151.74484400568002,
                  68.14007401463807,
                  619.8559965198399
                ],
                [
                  -151.7331973681126,
                  68.13992365465194,
                  660.77599651984
                ],
                [
                  -151.7335886368892,
                  68.13557941705292,
                  660.77599651984
                ],
                [
                  -151.74523326725014,
                  68.13572974873397,
                  619.8559965198399
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000298.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000298.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:33Z",
            "pc:count": 4216970,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94773.47905,
                "count": 4216970,
                "maximum": 95012.00897,
                "minimum": 94523.46897,
                "name": "X",
                "position": 0,
                "stddev": 132.3565634,
                "variance": 17518.25988
              },
              {
                "average": 2021279.047,
                "count": 4216970,
                "maximum": 2021523.071,
                "minimum": 2021042.331,
                "name": "Y",
                "position": 1,
                "stddev": 129.4151187,
                "variance": 16748.27294
              },
              {
                "average": 642.5112308,
                "count": 4216970,
                "maximum": 660.7759965,
                "minimum": 619.8559965,
                "name": "Z",
                "position": 2,
                "stddev": 6.378416723,
                "variance": 40.6841999
              },
              {
                "average": 39592.13578,
                "count": 4216970,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11312.01286,
                "variance": 127961634.9
              },
              {
                "average": 1.016990398,
                "count": 4216970,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1316295859,
                "variance": 0.01732634789
              },
              {
                "average": 1.033986488,
                "count": 4216970,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1862858729,
                "variance": 0.03470242645
              },
              {
                "average": 0.4995503881,
                "count": 4216970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998571,
                "variance": 0.2499998571
              },
              {
                "average": 0.0005020192223,
                "count": 4216970,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02240016335,
                "variance": 0.000501767318
              },
              {
                "average": 1.537336524,
                "count": 4216970,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.001698946,
                "variance": 1.003400778
              },
              {
                "average": 3.48905951,
                "count": 4216970,
                "maximum": 21.55800056,
                "minimum": -21.1439991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.64118601,
                "variance": 113.2348398
              },
              {
                "average": 0.5258142695,
                "count": 4216970,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499333238,
                "variance": 0.2493336826
              },
              {
                "average": 420.8084155,
                "count": 4216970,
                "maximum": 632,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 115.9927459,
                "variance": 13454.3171
              },
              {
                "average": 249235966.3,
                "count": 4216970,
                "maximum": 249242693.7,
                "minimum": 249233764.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3478.712721,
                "variance": 12101442.19
              },
              {
                "average": 0.5258142695,
                "count": 4216970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499333238,
                "variance": 0.2493336826
              },
              {
                "average": 0,
                "count": 4216970,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4216970,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4216970,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2392597054,
                "count": 4216970,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4266316232,
                "variance": 0.1820145419
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94523.46897,
              2021042.331,
              619.8559965,
              95012.00897,
              2021523.071,
              660.7759965
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94523.46897321341,
                    2021042.3307082634,
                    619.8559965198399
                  ],
                  [
                    94523.46897321341,
                    2021523.0707082637,
                    619.8559965198399
                  ],
                  [
                    95012.00897321342,
                    2021523.0707082637,
                    660.77599651984
                  ],
                  [
                    95012.00897321342,
                    2021042.3307082634,
                    660.77599651984
                  ],
                  [
                    94523.46897321341,
                    2021042.3307082634,
                    619.8559965198399
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:33+00:00",
            "end_time": "2019-08-07T17:22:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000375.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7571635972596,
              68.14790562041802,
              658.8129790478862
            ],
            [
              -151.756776174941,
              68.15225046578368,
              658.8129790478862
            ],
            [
              -151.74512669220266,
              68.15210092905576,
              684.5129790478862
            ],
            [
              -151.74551612339343,
              68.14775611186143,
              684.5129790478862
            ],
            [
              -151.7571635972596,
              68.14790562041802,
              658.8129790478862
            ]
          ]
        ]
      },
      "bbox": [
        -151.7571636,
        68.14775611,
        658.812979,
        -151.7451267,
        68.15225047,
        684.512979
      ],
      "properties": {
        "datetime": "2019-08-07T20:02:31Z",
        "pc:count": 4468090,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94220.10356,
            "count": 4468090,
            "maximum": 94466.47226,
            "minimum": 93978.05226,
            "name": "X",
            "position": 0,
            "stddev": 134.6994817,
            "variance": 18143.95037
          },
          {
            "average": 2022615.95,
            "count": 4468090,
            "maximum": 2022852.003,
            "minimum": 2022371.223,
            "name": "Y",
            "position": 1,
            "stddev": 130.4940928,
            "variance": 17028.70825
          },
          {
            "average": 670.0945074,
            "count": 4468090,
            "maximum": 684.512979,
            "minimum": 658.812979,
            "name": "Z",
            "position": 2,
            "stddev": 5.93915238,
            "variance": 35.27353099
          },
          {
            "average": 49304.05075,
            "count": 4468090,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10400.02737,
            "variance": 108160569.3
          },
          {
            "average": 1.002203179,
            "count": 4468090,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04690538893,
            "variance": 0.00220011551
          },
          {
            "average": 1.004405014,
            "count": 4468090,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06626448882,
            "variance": 0.004390982478
          },
          {
            "average": 0.4999382286,
            "count": 4468090,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000521,
            "variance": 0.2500000521
          },
          {
            "average": 0.0006165945628,
            "count": 4468090,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02482366838,
            "variance": 0.0006162145118
          },
          {
            "average": 1.29984311,
            "count": 4468090,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5382630235,
            "variance": 0.2897270824
          },
          {
            "average": 1.285673325,
            "count": 4468090,
            "maximum": 21.75,
            "minimum": -21.0720005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.1521227,
            "variance": 124.3698407
          },
          {
            "average": 0.499706586,
            "count": 4468090,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999699,
            "variance": 0.2499999699
          },
          {
            "average": 416.9268305,
            "count": 4468090,
            "maximum": 634,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.6492316,
            "variance": 12689.84939
          },
          {
            "average": 249236152.5,
            "count": 4468090,
            "maximum": 249243351.8,
            "minimum": 249233911.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3583.030655,
            "variance": 12838108.67
          },
          {
            "average": 0.499706586,
            "count": 4468090,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999699,
            "variance": 0.2499999699
          },
          {
            "average": 0,
            "count": 4468090,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4468090,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4468090,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2791394086,
            "count": 4468090,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4485762412,
            "variance": 0.2012206442
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93978.05226,
          2022371.223,
          658.812979,
          94466.47226,
          2022852.003,
          684.512979
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93978.05225774278,
                2022371.2233547235,
                658.8129790478862
              ],
              [
                93978.05225774278,
                2022852.0033547233,
                658.8129790478862
              ],
              [
                94466.47225774279,
                2022852.0033547233,
                684.5129790478862
              ],
              [
                94466.47225774279,
                2022371.2233547235,
                684.5129790478862
              ],
              [
                93978.05225774278,
                2022371.2233547235,
                658.8129790478862
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:02:31+00:00",
        "end_time": "2019-08-07T17:25:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000375.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000375.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000375.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000375.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7571636,
            68.14775611,
            658.812979,
            -151.7451267,
            68.15225047,
            684.512979
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7571635972596,
                  68.14790562041802,
                  658.8129790478862
                ],
                [
                  -151.756776174941,
                  68.15225046578368,
                  658.8129790478862
                ],
                [
                  -151.74512669220266,
                  68.15210092905576,
                  684.5129790478862
                ],
                [
                  -151.74551612339343,
                  68.14775611186143,
                  684.5129790478862
                ],
                [
                  -151.7571635972596,
                  68.14790562041802,
                  658.8129790478862
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000375.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000375.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:02:31Z",
            "pc:count": 4468090,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94220.10356,
                "count": 4468090,
                "maximum": 94466.47226,
                "minimum": 93978.05226,
                "name": "X",
                "position": 0,
                "stddev": 134.6994817,
                "variance": 18143.95037
              },
              {
                "average": 2022615.95,
                "count": 4468090,
                "maximum": 2022852.003,
                "minimum": 2022371.223,
                "name": "Y",
                "position": 1,
                "stddev": 130.4940928,
                "variance": 17028.70825
              },
              {
                "average": 670.0945074,
                "count": 4468090,
                "maximum": 684.512979,
                "minimum": 658.812979,
                "name": "Z",
                "position": 2,
                "stddev": 5.93915238,
                "variance": 35.27353099
              },
              {
                "average": 49304.05075,
                "count": 4468090,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10400.02737,
                "variance": 108160569.3
              },
              {
                "average": 1.002203179,
                "count": 4468090,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04690538893,
                "variance": 0.00220011551
              },
              {
                "average": 1.004405014,
                "count": 4468090,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06626448882,
                "variance": 0.004390982478
              },
              {
                "average": 0.4999382286,
                "count": 4468090,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000521,
                "variance": 0.2500000521
              },
              {
                "average": 0.0006165945628,
                "count": 4468090,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02482366838,
                "variance": 0.0006162145118
              },
              {
                "average": 1.29984311,
                "count": 4468090,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5382630235,
                "variance": 0.2897270824
              },
              {
                "average": 1.285673325,
                "count": 4468090,
                "maximum": 21.75,
                "minimum": -21.0720005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.1521227,
                "variance": 124.3698407
              },
              {
                "average": 0.499706586,
                "count": 4468090,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999699,
                "variance": 0.2499999699
              },
              {
                "average": 416.9268305,
                "count": 4468090,
                "maximum": 634,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.6492316,
                "variance": 12689.84939
              },
              {
                "average": 249236152.5,
                "count": 4468090,
                "maximum": 249243351.8,
                "minimum": 249233911.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3583.030655,
                "variance": 12838108.67
              },
              {
                "average": 0.499706586,
                "count": 4468090,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999699,
                "variance": 0.2499999699
              },
              {
                "average": 0,
                "count": 4468090,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4468090,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4468090,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2791394086,
                "count": 4468090,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4485762412,
                "variance": 0.2012206442
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93978.05226,
              2022371.223,
              658.812979,
              94466.47226,
              2022852.003,
              684.512979
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93978.05225774278,
                    2022371.2233547235,
                    658.8129790478862
                  ],
                  [
                    93978.05225774278,
                    2022852.0033547233,
                    658.8129790478862
                  ],
                  [
                    94466.47225774279,
                    2022852.0033547233,
                    684.5129790478862
                  ],
                  [
                    94466.47225774279,
                    2022371.2233547235,
                    684.5129790478862
                  ],
                  [
                    93978.05225774278,
                    2022371.2233547235,
                    658.8129790478862
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:02:31+00:00",
            "end_time": "2019-08-07T17:25:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000247.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7336235563284,
              68.12765004975213,
              631.7026355000578
            ],
            [
              -151.73323249816053,
              68.13199325933392,
              631.7026355000578
            ],
            [
              -151.72158966768498,
              68.13184213199942,
              677.2626355000577
            ],
            [
              -151.7219827313062,
              68.12749895084858,
              677.2626355000577
            ],
            [
              -151.7336235563284,
              68.12765004975213,
              631.7026355000578
            ]
          ]
        ]
      },
      "bbox": [
        -151.7336236,
        68.12749895,
        631.7026355,
        -151.7215897,
        68.13199326,
        677.2626355
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:01Z",
        "pc:count": 4347066,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95287.64069,
            "count": 4347066,
            "maximum": 95529.00825,
            "minimum": 95040.46825,
            "name": "X",
            "position": 0,
            "stddev": 134.7457215,
            "variance": 18156.40945
          },
          {
            "average": 2020403.784,
            "count": 4347066,
            "maximum": 2020646.447,
            "minimum": 2020165.807,
            "name": "Y",
            "position": 1,
            "stddev": 132.0054409,
            "variance": 17425.43642
          },
          {
            "average": 660.515772,
            "count": 4347066,
            "maximum": 677.2626355,
            "minimum": 631.7026355,
            "name": "Z",
            "position": 2,
            "stddev": 6.458138178,
            "variance": 41.70754872
          },
          {
            "average": 52048.57564,
            "count": 4347066,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7545.064471,
            "variance": 56927997.86
          },
          {
            "average": 1.000198525,
            "count": 4347066,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01410480132,
            "variance": 0.0001989454202
          },
          {
            "average": 1.0003982,
            "count": 4347066,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01998552935,
            "variance": 0.0003994213835
          },
          {
            "average": 0.4742674714,
            "count": 4347066,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4993374554,
            "variance": 0.2493378943
          },
          {
            "average": 0.0004639911149,
            "count": 4347066,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0215354576,
            "variance": 0.0004637759339
          },
          {
            "average": 1.272747182,
            "count": 4347066,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5011422379,
            "variance": 0.2511435426
          },
          {
            "average": -1.478864855,
            "count": 4347066,
            "maximum": 21.28800011,
            "minimum": -21.09600067,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12912954,
            "variance": 123.8575243
          },
          {
            "average": 0.4798204122,
            "count": 4347066,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995926757,
            "variance": 0.2495928417
          },
          {
            "average": 424.7173984,
            "count": 4347066,
            "maximum": 630,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.9935349,
            "variance": 14159.46135
          },
          {
            "average": 249235845.5,
            "count": 4347066,
            "maximum": 249242001.6,
            "minimum": 249233626.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3437.764455,
            "variance": 11818224.45
          },
          {
            "average": 0.4798204122,
            "count": 4347066,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995926757,
            "variance": 0.2495928417
          },
          {
            "average": 0,
            "count": 4347066,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4347066,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4347066,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1883884441,
            "count": 4347066,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3910220881,
            "variance": 0.1528982734
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95040.46825,
          2020165.807,
          631.7026355,
          95529.00825,
          2020646.447,
          677.2626355
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95040.46824974536,
                2020165.8069907909,
                631.7026355000578
              ],
              [
                95040.46824974536,
                2020646.446990791,
                631.7026355000578
              ],
              [
                95529.00824974537,
                2020646.446990791,
                677.2626355000577
              ],
              [
                95529.00824974537,
                2020165.8069907909,
                677.2626355000577
              ],
              [
                95040.46824974536,
                2020165.8069907909,
                631.7026355000578
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:01+00:00",
        "end_time": "2019-08-07T17:20:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000247.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000247.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000247.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000247.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7336236,
            68.12749895,
            631.7026355,
            -151.7215897,
            68.13199326,
            677.2626355
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7336235563284,
                  68.12765004975213,
                  631.7026355000578
                ],
                [
                  -151.73323249816053,
                  68.13199325933392,
                  631.7026355000578
                ],
                [
                  -151.72158966768498,
                  68.13184213199942,
                  677.2626355000577
                ],
                [
                  -151.7219827313062,
                  68.12749895084858,
                  677.2626355000577
                ],
                [
                  -151.7336235563284,
                  68.12765004975213,
                  631.7026355000578
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000247.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000247.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:01Z",
            "pc:count": 4347066,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95287.64069,
                "count": 4347066,
                "maximum": 95529.00825,
                "minimum": 95040.46825,
                "name": "X",
                "position": 0,
                "stddev": 134.7457215,
                "variance": 18156.40945
              },
              {
                "average": 2020403.784,
                "count": 4347066,
                "maximum": 2020646.447,
                "minimum": 2020165.807,
                "name": "Y",
                "position": 1,
                "stddev": 132.0054409,
                "variance": 17425.43642
              },
              {
                "average": 660.515772,
                "count": 4347066,
                "maximum": 677.2626355,
                "minimum": 631.7026355,
                "name": "Z",
                "position": 2,
                "stddev": 6.458138178,
                "variance": 41.70754872
              },
              {
                "average": 52048.57564,
                "count": 4347066,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7545.064471,
                "variance": 56927997.86
              },
              {
                "average": 1.000198525,
                "count": 4347066,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01410480132,
                "variance": 0.0001989454202
              },
              {
                "average": 1.0003982,
                "count": 4347066,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01998552935,
                "variance": 0.0003994213835
              },
              {
                "average": 0.4742674714,
                "count": 4347066,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4993374554,
                "variance": 0.2493378943
              },
              {
                "average": 0.0004639911149,
                "count": 4347066,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0215354576,
                "variance": 0.0004637759339
              },
              {
                "average": 1.272747182,
                "count": 4347066,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5011422379,
                "variance": 0.2511435426
              },
              {
                "average": -1.478864855,
                "count": 4347066,
                "maximum": 21.28800011,
                "minimum": -21.09600067,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12912954,
                "variance": 123.8575243
              },
              {
                "average": 0.4798204122,
                "count": 4347066,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995926757,
                "variance": 0.2495928417
              },
              {
                "average": 424.7173984,
                "count": 4347066,
                "maximum": 630,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.9935349,
                "variance": 14159.46135
              },
              {
                "average": 249235845.5,
                "count": 4347066,
                "maximum": 249242001.6,
                "minimum": 249233626.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3437.764455,
                "variance": 11818224.45
              },
              {
                "average": 0.4798204122,
                "count": 4347066,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995926757,
                "variance": 0.2495928417
              },
              {
                "average": 0,
                "count": 4347066,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4347066,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4347066,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1883884441,
                "count": 4347066,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3910220881,
                "variance": 0.1528982734
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95040.46825,
              2020165.807,
              631.7026355,
              95529.00825,
              2020646.447,
              677.2626355
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95040.46824974536,
                    2020165.8069907909,
                    631.7026355000578
                  ],
                  [
                    95040.46824974536,
                    2020646.446990791,
                    631.7026355000578
                  ],
                  [
                    95529.00824974537,
                    2020646.446990791,
                    677.2626355000577
                  ],
                  [
                    95529.00824974537,
                    2020165.8069907909,
                    677.2626355000577
                  ],
                  [
                    95040.46824974536,
                    2020165.8069907909,
                    631.7026355000578
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:01+00:00",
            "end_time": "2019-08-07T17:20:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000403.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73547580491035,
              68.15223541773973,
              662.7786824243216
            ],
            [
              -151.73508470064016,
              68.1565788372148,
              662.7786824243216
            ],
            [
              -151.7234304809667,
              68.1564278191814,
              684.4186824243217
            ],
            [
              -151.72382359453556,
              68.15208442815363,
              684.4186824243217
            ],
            [
              -151.73547580491035,
              68.15223541773973,
              662.7786824243216
            ]
          ]
        ]
      },
      "bbox": [
        -151.7354758,
        68.15208443,
        662.7786824,
        -151.7234305,
        68.15657884,
        684.4186824
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:31Z",
        "pc:count": 4255994,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95117.52941,
            "count": 4255994,
            "maximum": 95358.66656,
            "minimum": 94870.12656,
            "name": "X",
            "position": 0,
            "stddev": 133.6467222,
            "variance": 17861.44635
          },
          {
            "average": 2023123.411,
            "count": 4255994,
            "maximum": 2023361.245,
            "minimum": 2022880.625,
            "name": "Y",
            "position": 1,
            "stddev": 129.7949099,
            "variance": 16846.71863
          },
          {
            "average": 671.7469754,
            "count": 4255994,
            "maximum": 684.4186824,
            "minimum": 662.7786824,
            "name": "Z",
            "position": 2,
            "stddev": 4.213167898,
            "variance": 17.75078374
          },
          {
            "average": 51109.57104,
            "count": 4255994,
            "maximum": 65535,
            "minimum": 3250,
            "name": "Intensity",
            "position": 3,
            "stddev": 5191.437776,
            "variance": 26951026.18
          },
          {
            "average": 1.00000047,
            "count": 4255994,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006855110241,
            "variance": 4.699253641e-07
          },
          {
            "average": 1.00000094,
            "count": 4255994,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009694587596,
            "variance": 9.398502865e-07
          },
          {
            "average": 0.4873980085,
            "count": 4255994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998412233,
            "variance": 0.2498412485
          },
          {
            "average": 0.0003966171005,
            "count": 4255994,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01991130052,
            "variance": 0.0003964598885
          },
          {
            "average": 1.272092019,
            "count": 4255994,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4458604631,
            "variance": 0.1987915525
          },
          {
            "average": 2.639746292,
            "count": 4255994,
            "maximum": 21.54000092,
            "minimum": -16.13400078,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.2908419,
            "variance": 127.4831109
          },
          {
            "average": 0.4777325814,
            "count": 4255994,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995039747,
            "variance": 0.2495042207
          },
          {
            "average": 425.4091507,
            "count": 4255994,
            "maximum": 633,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.4015392,
            "variance": 14496.53065
          },
          {
            "average": 249236118.9,
            "count": 4255994,
            "maximum": 249243051.3,
            "minimum": 249233578.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3931.027264,
            "variance": 15452975.35
          },
          {
            "average": 0.4777325814,
            "count": 4255994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995039747,
            "variance": 0.2495042207
          },
          {
            "average": 0,
            "count": 4255994,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4255994,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4255994,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1927791722,
            "count": 4255994,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3944811776,
            "variance": 0.1556153995
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94870.12656,
          2022880.625,
          662.7786824,
          95358.66656,
          2023361.245,
          684.4186824
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94870.12655645121,
                2022880.625270173,
                662.7786824243216
              ],
              [
                94870.12655645121,
                2023361.245270173,
                662.7786824243216
              ],
              [
                95358.66655645122,
                2023361.245270173,
                684.4186824243217
              ],
              [
                95358.66655645122,
                2022880.625270173,
                684.4186824243217
              ],
              [
                94870.12655645121,
                2022880.625270173,
                662.7786824243216
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:31+00:00",
        "end_time": "2019-08-07T17:19:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000403.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000403.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000403.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000403.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7354758,
            68.15208443,
            662.7786824,
            -151.7234305,
            68.15657884,
            684.4186824
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73547580491035,
                  68.15223541773973,
                  662.7786824243216
                ],
                [
                  -151.73508470064016,
                  68.1565788372148,
                  662.7786824243216
                ],
                [
                  -151.7234304809667,
                  68.1564278191814,
                  684.4186824243217
                ],
                [
                  -151.72382359453556,
                  68.15208442815363,
                  684.4186824243217
                ],
                [
                  -151.73547580491035,
                  68.15223541773973,
                  662.7786824243216
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000403.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000403.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:31Z",
            "pc:count": 4255994,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95117.52941,
                "count": 4255994,
                "maximum": 95358.66656,
                "minimum": 94870.12656,
                "name": "X",
                "position": 0,
                "stddev": 133.6467222,
                "variance": 17861.44635
              },
              {
                "average": 2023123.411,
                "count": 4255994,
                "maximum": 2023361.245,
                "minimum": 2022880.625,
                "name": "Y",
                "position": 1,
                "stddev": 129.7949099,
                "variance": 16846.71863
              },
              {
                "average": 671.7469754,
                "count": 4255994,
                "maximum": 684.4186824,
                "minimum": 662.7786824,
                "name": "Z",
                "position": 2,
                "stddev": 4.213167898,
                "variance": 17.75078374
              },
              {
                "average": 51109.57104,
                "count": 4255994,
                "maximum": 65535,
                "minimum": 3250,
                "name": "Intensity",
                "position": 3,
                "stddev": 5191.437776,
                "variance": 26951026.18
              },
              {
                "average": 1.00000047,
                "count": 4255994,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006855110241,
                "variance": 4.699253641e-07
              },
              {
                "average": 1.00000094,
                "count": 4255994,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009694587596,
                "variance": 9.398502865e-07
              },
              {
                "average": 0.4873980085,
                "count": 4255994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998412233,
                "variance": 0.2498412485
              },
              {
                "average": 0.0003966171005,
                "count": 4255994,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01991130052,
                "variance": 0.0003964598885
              },
              {
                "average": 1.272092019,
                "count": 4255994,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4458604631,
                "variance": 0.1987915525
              },
              {
                "average": 2.639746292,
                "count": 4255994,
                "maximum": 21.54000092,
                "minimum": -16.13400078,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.2908419,
                "variance": 127.4831109
              },
              {
                "average": 0.4777325814,
                "count": 4255994,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995039747,
                "variance": 0.2495042207
              },
              {
                "average": 425.4091507,
                "count": 4255994,
                "maximum": 633,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.4015392,
                "variance": 14496.53065
              },
              {
                "average": 249236118.9,
                "count": 4255994,
                "maximum": 249243051.3,
                "minimum": 249233578.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3931.027264,
                "variance": 15452975.35
              },
              {
                "average": 0.4777325814,
                "count": 4255994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995039747,
                "variance": 0.2495042207
              },
              {
                "average": 0,
                "count": 4255994,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4255994,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4255994,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1927791722,
                "count": 4255994,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3944811776,
                "variance": 0.1556153995
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94870.12656,
              2022880.625,
              662.7786824,
              95358.66656,
              2023361.245,
              684.4186824
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94870.12655645121,
                    2022880.625270173,
                    662.7786824243216
                  ],
                  [
                    94870.12655645121,
                    2023361.245270173,
                    662.7786824243216
                  ],
                  [
                    95358.66655645122,
                    2023361.245270173,
                    684.4186824243217
                  ],
                  [
                    95358.66655645122,
                    2022880.625270173,
                    684.4186824243217
                  ],
                  [
                    94870.12655645121,
                    2022880.625270173,
                    662.7786824243216
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:31+00:00",
            "end_time": "2019-08-07T17:19:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000349.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.75685208262607,
              68.14380867439401,
              662.7808222998493
            ],
            [
              -151.75646468571597,
              68.14815327382153,
              662.7808222998493
            ],
            [
              -151.74481519360836,
              68.14800369411614,
              688.9408222998494
            ],
            [
              -151.74520459898076,
              68.14365912286056,
              688.9408222998494
            ],
            [
              -151.75685208262607,
              68.14380867439401,
              662.7808222998493
            ]
          ]
        ]
      },
      "bbox": [
        -151.7568521,
        68.14365912,
        662.7808223,
        -151.7448152,
        68.14815327,
        688.9408223
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:50Z",
        "pc:count": 4442333,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94243.50786,
            "count": 4442333,
            "maximum": 94494.90143,
            "minimum": 94006.40143,
            "name": "X",
            "position": 0,
            "stddev": 134.6127675,
            "variance": 18120.59718
          },
          {
            "average": 2022158.611,
            "count": 4442333,
            "maximum": 2022399.586,
            "minimum": 2021918.826,
            "name": "Y",
            "position": 1,
            "stddev": 132.8066828,
            "variance": 17637.61498
          },
          {
            "average": 676.9903532,
            "count": 4442333,
            "maximum": 688.9408223,
            "minimum": 662.7808223,
            "name": "Z",
            "position": 2,
            "stddev": 6.721500025,
            "variance": 45.17856258
          },
          {
            "average": 51974.03275,
            "count": 4442333,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 6255.305345,
            "variance": 39128844.95
          },
          {
            "average": 1.000006528,
            "count": 4442333,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002555006887,
            "variance": 6.528060191e-06
          },
          {
            "average": 1.000013056,
            "count": 4442333,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003613313597,
            "variance": 1.305603515e-05
          },
          {
            "average": 0.494401928,
            "count": 4442333,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999687169,
            "variance": 0.2499687179
          },
          {
            "average": 0.0005411570902,
            "count": 4442333,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02325649073,
            "variance": 0.000540864361
          },
          {
            "average": 1.26392776,
            "count": 4442333,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4493510608,
            "variance": 0.2019163758
          },
          {
            "average": 4.008801043,
            "count": 4442333,
            "maximum": 21.49799919,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.02949536,
            "variance": 121.6497678
          },
          {
            "average": 0.4977778568,
            "count": 4442333,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999951183,
            "variance": 0.2499951184
          },
          {
            "average": 423.9304768,
            "count": 4442333,
            "maximum": 633,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 117.1322154,
            "variance": 13719.95588
          },
          {
            "average": 249236340.3,
            "count": 4442333,
            "maximum": 249243070.5,
            "minimum": 249233919.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3673.48358,
            "variance": 13494481.61
          },
          {
            "average": 0.4977778568,
            "count": 4442333,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999951183,
            "variance": 0.2499951184
          },
          {
            "average": 0,
            "count": 4442333,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4442333,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4442333,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2774310255,
            "count": 4442333,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.447731054,
            "variance": 0.2004630967
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94006.40143,
          2021918.826,
          662.7808223,
          94494.90143,
          2022399.586,
          688.9408223
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94006.40142564665,
                2021918.825635097,
                662.7808222998493
              ],
              [
                94006.40142564665,
                2022399.5856350968,
                662.7808222998493
              ],
              [
                94494.90142564665,
                2022399.5856350968,
                688.9408222998494
              ],
              [
                94494.90142564665,
                2021918.825635097,
                688.9408222998494
              ],
              [
                94006.40142564665,
                2021918.825635097,
                662.7808222998493
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:50+00:00",
        "end_time": "2019-08-07T17:25:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000349.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000349.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000349.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000349.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7568521,
            68.14365912,
            662.7808223,
            -151.7448152,
            68.14815327,
            688.9408223
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.75685208262607,
                  68.14380867439401,
                  662.7808222998493
                ],
                [
                  -151.75646468571597,
                  68.14815327382153,
                  662.7808222998493
                ],
                [
                  -151.74481519360836,
                  68.14800369411614,
                  688.9408222998494
                ],
                [
                  -151.74520459898076,
                  68.14365912286056,
                  688.9408222998494
                ],
                [
                  -151.75685208262607,
                  68.14380867439401,
                  662.7808222998493
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000349.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000349.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:50Z",
            "pc:count": 4442333,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94243.50786,
                "count": 4442333,
                "maximum": 94494.90143,
                "minimum": 94006.40143,
                "name": "X",
                "position": 0,
                "stddev": 134.6127675,
                "variance": 18120.59718
              },
              {
                "average": 2022158.611,
                "count": 4442333,
                "maximum": 2022399.586,
                "minimum": 2021918.826,
                "name": "Y",
                "position": 1,
                "stddev": 132.8066828,
                "variance": 17637.61498
              },
              {
                "average": 676.9903532,
                "count": 4442333,
                "maximum": 688.9408223,
                "minimum": 662.7808223,
                "name": "Z",
                "position": 2,
                "stddev": 6.721500025,
                "variance": 45.17856258
              },
              {
                "average": 51974.03275,
                "count": 4442333,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 6255.305345,
                "variance": 39128844.95
              },
              {
                "average": 1.000006528,
                "count": 4442333,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002555006887,
                "variance": 6.528060191e-06
              },
              {
                "average": 1.000013056,
                "count": 4442333,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003613313597,
                "variance": 1.305603515e-05
              },
              {
                "average": 0.494401928,
                "count": 4442333,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999687169,
                "variance": 0.2499687179
              },
              {
                "average": 0.0005411570902,
                "count": 4442333,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02325649073,
                "variance": 0.000540864361
              },
              {
                "average": 1.26392776,
                "count": 4442333,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4493510608,
                "variance": 0.2019163758
              },
              {
                "average": 4.008801043,
                "count": 4442333,
                "maximum": 21.49799919,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.02949536,
                "variance": 121.6497678
              },
              {
                "average": 0.4977778568,
                "count": 4442333,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999951183,
                "variance": 0.2499951184
              },
              {
                "average": 423.9304768,
                "count": 4442333,
                "maximum": 633,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 117.1322154,
                "variance": 13719.95588
              },
              {
                "average": 249236340.3,
                "count": 4442333,
                "maximum": 249243070.5,
                "minimum": 249233919.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3673.48358,
                "variance": 13494481.61
              },
              {
                "average": 0.4977778568,
                "count": 4442333,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999951183,
                "variance": 0.2499951184
              },
              {
                "average": 0,
                "count": 4442333,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4442333,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4442333,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2774310255,
                "count": 4442333,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.447731054,
                "variance": 0.2004630967
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94006.40143,
              2021918.826,
              662.7808223,
              94494.90143,
              2022399.586,
              688.9408223
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94006.40142564665,
                    2021918.825635097,
                    662.7808222998493
                  ],
                  [
                    94006.40142564665,
                    2022399.5856350968,
                    662.7808222998493
                  ],
                  [
                    94494.90142564665,
                    2022399.5856350968,
                    688.9408222998494
                  ],
                  [
                    94494.90142564665,
                    2021918.825635097,
                    688.9408222998494
                  ],
                  [
                    94006.40142564665,
                    2021918.825635097,
                    662.7808222998493
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:50+00:00",
            "end_time": "2019-08-07T17:25:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000380.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70216987888793,
              68.1484797775699,
              646.644518103379
            ],
            [
              -151.70177296828808,
              68.15282432817628,
              646.644518103379
            ],
            [
              -151.69012212052192,
              68.15267111661427,
              697.464518103379
            ],
            [
              -151.69052104001997,
              68.14832659487038,
              697.464518103379
            ],
            [
              -151.70216987888793,
              68.1484797775699,
              646.644518103379
            ]
          ]
        ]
      },
      "bbox": [
        -151.7021699,
        68.14832659,
        646.6445181,
        -151.6901221,
        68.15282433,
        697.4645181
      ],
      "properties": {
        "datetime": "2019-08-07T20:21:45Z",
        "pc:count": 4477053,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96521.46245,
            "count": 4477053,
            "maximum": 96767.74249,
            "minimum": 96279.26249,
            "name": "X",
            "position": 0,
            "stddev": 128.078451,
            "variance": 16404.0896
          },
          {
            "average": 2022754.525,
            "count": 4477053,
            "maximum": 2022994.218,
            "minimum": 2022513.458,
            "name": "Y",
            "position": 1,
            "stddev": 129.407853,
            "variance": 16746.39242
          },
          {
            "average": 681.2304512,
            "count": 4477053,
            "maximum": 697.4645181,
            "minimum": 646.6445181,
            "name": "Z",
            "position": 2,
            "stddev": 9.272757841,
            "variance": 85.98403798
          },
          {
            "average": 52337.31838,
            "count": 4477053,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 6623.635041,
            "variance": 43872541.16
          },
          {
            "average": 1.000004021,
            "count": 4477053,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002005115112,
            "variance": 4.020486613e-06
          },
          {
            "average": 1.000008041,
            "count": 4477053,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002835655285,
            "variance": 8.040940897e-06
          },
          {
            "average": 0.4915577278,
            "count": 4477053,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999287788,
            "variance": 0.2499287839
          },
          {
            "average": 0.0004042838001,
            "count": 4477053,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0201027472,
            "variance": 0.000404120445
          },
          {
            "average": 1.271526158,
            "count": 4477053,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4577569253,
            "variance": 0.2095414027
          },
          {
            "average": 1.783153012,
            "count": 4477053,
            "maximum": 21.60000038,
            "minimum": -20.84399986,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.1706483,
            "variance": 124.7833834
          },
          {
            "average": 0.4825676623,
            "count": 4477053,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499696077,
            "variance": 0.2496961694
          },
          {
            "average": 416.992299,
            "count": 4477053,
            "maximum": 638,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.3237924,
            "variance": 14000.51985
          },
          {
            "average": 249235302,
            "count": 4477053,
            "maximum": 249244505.5,
            "minimum": 249232911.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3832.413039,
            "variance": 14687389.7
          },
          {
            "average": 0.4825676623,
            "count": 4477053,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499696077,
            "variance": 0.2496961694
          },
          {
            "average": 0,
            "count": 4477053,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4477053,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4477053,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.175644559,
            "count": 4477053,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3805175164,
            "variance": 0.1447935803
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96279.26249,
          2022513.458,
          646.6445181,
          96767.74249,
          2022994.218,
          697.4645181
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96279.26248850643,
                2022513.4581867214,
                646.644518103379
              ],
              [
                96279.26248850643,
                2022994.2181867212,
                646.644518103379
              ],
              [
                96767.74248850644,
                2022994.2181867212,
                697.464518103379
              ],
              [
                96767.74248850644,
                2022513.4581867214,
                697.464518103379
              ],
              [
                96279.26248850643,
                2022513.4581867214,
                646.644518103379
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:21:45+00:00",
        "end_time": "2019-08-07T17:08:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000380.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000380.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000380.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000380.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7021699,
            68.14832659,
            646.6445181,
            -151.6901221,
            68.15282433,
            697.4645181
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70216987888793,
                  68.1484797775699,
                  646.644518103379
                ],
                [
                  -151.70177296828808,
                  68.15282432817628,
                  646.644518103379
                ],
                [
                  -151.69012212052192,
                  68.15267111661427,
                  697.464518103379
                ],
                [
                  -151.69052104001997,
                  68.14832659487038,
                  697.464518103379
                ],
                [
                  -151.70216987888793,
                  68.1484797775699,
                  646.644518103379
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000380.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000380.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:21:45Z",
            "pc:count": 4477053,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96521.46245,
                "count": 4477053,
                "maximum": 96767.74249,
                "minimum": 96279.26249,
                "name": "X",
                "position": 0,
                "stddev": 128.078451,
                "variance": 16404.0896
              },
              {
                "average": 2022754.525,
                "count": 4477053,
                "maximum": 2022994.218,
                "minimum": 2022513.458,
                "name": "Y",
                "position": 1,
                "stddev": 129.407853,
                "variance": 16746.39242
              },
              {
                "average": 681.2304512,
                "count": 4477053,
                "maximum": 697.4645181,
                "minimum": 646.6445181,
                "name": "Z",
                "position": 2,
                "stddev": 9.272757841,
                "variance": 85.98403798
              },
              {
                "average": 52337.31838,
                "count": 4477053,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 6623.635041,
                "variance": 43872541.16
              },
              {
                "average": 1.000004021,
                "count": 4477053,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002005115112,
                "variance": 4.020486613e-06
              },
              {
                "average": 1.000008041,
                "count": 4477053,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002835655285,
                "variance": 8.040940897e-06
              },
              {
                "average": 0.4915577278,
                "count": 4477053,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999287788,
                "variance": 0.2499287839
              },
              {
                "average": 0.0004042838001,
                "count": 4477053,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0201027472,
                "variance": 0.000404120445
              },
              {
                "average": 1.271526158,
                "count": 4477053,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4577569253,
                "variance": 0.2095414027
              },
              {
                "average": 1.783153012,
                "count": 4477053,
                "maximum": 21.60000038,
                "minimum": -20.84399986,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.1706483,
                "variance": 124.7833834
              },
              {
                "average": 0.4825676623,
                "count": 4477053,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499696077,
                "variance": 0.2496961694
              },
              {
                "average": 416.992299,
                "count": 4477053,
                "maximum": 638,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.3237924,
                "variance": 14000.51985
              },
              {
                "average": 249235302,
                "count": 4477053,
                "maximum": 249244505.5,
                "minimum": 249232911.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3832.413039,
                "variance": 14687389.7
              },
              {
                "average": 0.4825676623,
                "count": 4477053,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499696077,
                "variance": 0.2496961694
              },
              {
                "average": 0,
                "count": 4477053,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4477053,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4477053,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.175644559,
                "count": 4477053,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3805175164,
                "variance": 0.1447935803
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96279.26249,
              2022513.458,
              646.6445181,
              96767.74249,
              2022994.218,
              697.4645181
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96279.26248850643,
                    2022513.4581867214,
                    646.644518103379
                  ],
                  [
                    96279.26248850643,
                    2022994.2181867212,
                    646.644518103379
                  ],
                  [
                    96767.74248850644,
                    2022994.2181867212,
                    697.464518103379
                  ],
                  [
                    96767.74248850644,
                    2022513.4581867214,
                    697.464518103379
                  ],
                  [
                    96279.26248850643,
                    2022513.4581867214,
                    646.644518103379
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:21:45+00:00",
            "end_time": "2019-08-07T17:08:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000352.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.72386079017528,
              68.14415469232519,
              640.6156764962531
            ],
            [
              -151.7234677578268,
              68.14849850077209,
              640.6156764962531
            ],
            [
              -151.7118197348169,
              68.1483467461699,
              674.0756764962531
            ],
            [
              -151.71221477496545,
              68.14400296629988,
              674.0756764962531
            ],
            [
              -151.72386079017528,
              68.14415469232519,
              640.6156764962531
            ]
          ]
        ]
      },
      "bbox": [
        -151.7238608,
        68.14400297,
        640.6156765,
        -151.7118197,
        68.1484985,
        674.0756765
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:53Z",
        "pc:count": 3522257,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95610.60521,
            "count": 3522257,
            "maximum": 95875.59993,
            "minimum": 95387.15993,
            "name": "X",
            "position": 0,
            "stddev": 134.4874584,
            "variance": 18086.87646
          },
          {
            "average": 2022223.59,
            "count": 3522257,
            "maximum": 2022484.794,
            "minimum": 2022004.114,
            "name": "Y",
            "position": 1,
            "stddev": 130.1258381,
            "variance": 16932.73375
          },
          {
            "average": 651.9268691,
            "count": 3522257,
            "maximum": 674.0756765,
            "minimum": 640.6156765,
            "name": "Z",
            "position": 2,
            "stddev": 6.709225433,
            "variance": 45.01370591
          },
          {
            "average": 43146.83538,
            "count": 3522257,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14774.09458,
            "variance": 218273870.7
          },
          {
            "average": 1.000590814,
            "count": 3522257,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02431117602,
            "variance": 0.0005910332796
          },
          {
            "average": 1.001181061,
            "count": 3522257,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03437106017,
            "variance": 0.001181369777
          },
          {
            "average": 0.5025283504,
            "count": 3522257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999936784,
            "variance": 0.2499936784
          },
          {
            "average": 0.000626870782,
            "count": 3522257,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0250295424,
            "variance": 0.0006264779929
          },
          {
            "average": 2.466635172,
            "count": 3522257,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.79022347,
            "variance": 7.785347014
          },
          {
            "average": 2.170473174,
            "count": 3522257,
            "maximum": 21.54599953,
            "minimum": -21.16200066,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.45569981,
            "variance": 109.3216584
          },
          {
            "average": 0.5272133748,
            "count": 3522257,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992589538,
            "variance": 0.249259503
          },
          {
            "average": 421.9427239,
            "count": 3522257,
            "maximum": 632,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.84307,
            "variance": 14123.67528
          },
          {
            "average": 249235776.9,
            "count": 3522257,
            "maximum": 249242713.8,
            "minimum": 249233447.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3720.5456,
            "variance": 13842459.56
          },
          {
            "average": 0.5272133748,
            "count": 3522257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992589538,
            "variance": 0.249259503
          },
          {
            "average": 0,
            "count": 3522257,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3522257,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3522257,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2605179009,
            "count": 3522257,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4389172802,
            "variance": 0.1926483789
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95387.15993,
          2022004.114,
          640.6156765,
          95875.59993,
          2022484.794,
          674.0756765
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95387.15992534513,
                2022004.1141099697,
                640.6156764962531
              ],
              [
                95387.15992534513,
                2022484.7941099699,
                640.6156764962531
              ],
              [
                95875.59992534513,
                2022484.7941099699,
                674.0756764962531
              ],
              [
                95875.59992534513,
                2022004.1141099697,
                674.0756764962531
              ],
              [
                95387.15992534513,
                2022004.1141099697,
                640.6156764962531
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:53+00:00",
        "end_time": "2019-08-07T17:17:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000352.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000352.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000352.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000352.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7238608,
            68.14400297,
            640.6156765,
            -151.7118197,
            68.1484985,
            674.0756765
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.72386079017528,
                  68.14415469232519,
                  640.6156764962531
                ],
                [
                  -151.7234677578268,
                  68.14849850077209,
                  640.6156764962531
                ],
                [
                  -151.7118197348169,
                  68.1483467461699,
                  674.0756764962531
                ],
                [
                  -151.71221477496545,
                  68.14400296629988,
                  674.0756764962531
                ],
                [
                  -151.72386079017528,
                  68.14415469232519,
                  640.6156764962531
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000352.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000352.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:53Z",
            "pc:count": 3522257,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95610.60521,
                "count": 3522257,
                "maximum": 95875.59993,
                "minimum": 95387.15993,
                "name": "X",
                "position": 0,
                "stddev": 134.4874584,
                "variance": 18086.87646
              },
              {
                "average": 2022223.59,
                "count": 3522257,
                "maximum": 2022484.794,
                "minimum": 2022004.114,
                "name": "Y",
                "position": 1,
                "stddev": 130.1258381,
                "variance": 16932.73375
              },
              {
                "average": 651.9268691,
                "count": 3522257,
                "maximum": 674.0756765,
                "minimum": 640.6156765,
                "name": "Z",
                "position": 2,
                "stddev": 6.709225433,
                "variance": 45.01370591
              },
              {
                "average": 43146.83538,
                "count": 3522257,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14774.09458,
                "variance": 218273870.7
              },
              {
                "average": 1.000590814,
                "count": 3522257,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02431117602,
                "variance": 0.0005910332796
              },
              {
                "average": 1.001181061,
                "count": 3522257,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03437106017,
                "variance": 0.001181369777
              },
              {
                "average": 0.5025283504,
                "count": 3522257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999936784,
                "variance": 0.2499936784
              },
              {
                "average": 0.000626870782,
                "count": 3522257,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0250295424,
                "variance": 0.0006264779929
              },
              {
                "average": 2.466635172,
                "count": 3522257,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.79022347,
                "variance": 7.785347014
              },
              {
                "average": 2.170473174,
                "count": 3522257,
                "maximum": 21.54599953,
                "minimum": -21.16200066,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.45569981,
                "variance": 109.3216584
              },
              {
                "average": 0.5272133748,
                "count": 3522257,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992589538,
                "variance": 0.249259503
              },
              {
                "average": 421.9427239,
                "count": 3522257,
                "maximum": 632,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.84307,
                "variance": 14123.67528
              },
              {
                "average": 249235776.9,
                "count": 3522257,
                "maximum": 249242713.8,
                "minimum": 249233447.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3720.5456,
                "variance": 13842459.56
              },
              {
                "average": 0.5272133748,
                "count": 3522257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992589538,
                "variance": 0.249259503
              },
              {
                "average": 0,
                "count": 3522257,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3522257,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3522257,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2605179009,
                "count": 3522257,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4389172802,
                "variance": 0.1926483789
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95387.15993,
              2022004.114,
              640.6156765,
              95875.59993,
              2022484.794,
              674.0756765
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95387.15992534513,
                    2022004.1141099697,
                    640.6156764962531
                  ],
                  [
                    95387.15992534513,
                    2022484.7941099699,
                    640.6156764962531
                  ],
                  [
                    95875.59992534513,
                    2022484.7941099699,
                    674.0756764962531
                  ],
                  [
                    95875.59992534513,
                    2022004.1141099697,
                    674.0756764962531
                  ],
                  [
                    95387.15992534513,
                    2022004.1141099697,
                    640.6156764962531
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:53+00:00",
            "end_time": "2019-08-07T17:17:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000324.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74554417404522,
              68.13982660532346,
              541.1778593994918
            ],
            [
              -151.74515485418493,
              68.14417147851766,
              541.1778593994918
            ],
            [
              -151.73350584190763,
              68.14402113073237,
              1174.477859399492
            ],
            [
              -151.73389716996195,
              68.13967628585083,
              1174.477859399492
            ],
            [
              -151.74554417404522,
              68.13982660532346,
              541.1778593994918
            ]
          ]
        ]
      },
      "bbox": [
        -151.7455442,
        68.13967629,
        541.1778594,
        -151.7335058,
        68.14417148,
        1174.477859
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:41Z",
        "pc:count": 4312237,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94740.5947,
            "count": 4312237,
            "maximum": 94983.62182,
            "minimum": 94495.06182,
            "name": "X",
            "position": 0,
            "stddev": 132.7402476,
            "variance": 17619.97333
          },
          {
            "average": 2021739.338,
            "count": 4312237,
            "maximum": 2021975.528,
            "minimum": 2021494.728,
            "name": "Y",
            "position": 1,
            "stddev": 131.1986485,
            "variance": 17213.08537
          },
          {
            "average": 649.5551242,
            "count": 4312237,
            "maximum": 1174.477859,
            "minimum": 541.1778594,
            "name": "Z",
            "position": 2,
            "stddev": 6.274790552,
            "variance": 39.37299648
          },
          {
            "average": 44315.44011,
            "count": 4312237,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12219.745,
            "variance": 149322167.9
          },
          {
            "average": 1.030103401,
            "count": 4312237,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1733603912,
            "variance": 0.03005382525
          },
          {
            "average": 1.060202628,
            "count": 4312237,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2432001768,
            "variance": 0.05914632598
          },
          {
            "average": 0.511779385,
            "count": 4312237,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998612848,
            "variance": 0.249861304
          },
          {
            "average": 0.0004644920954,
            "count": 4312237,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02154707521,
            "variance": 0.0004642764502
          },
          {
            "average": 1.651037037,
            "count": 4312237,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.185104897,
            "variance": 1.404473618
          },
          {
            "average": -1.816977551,
            "count": 4312237,
            "maximum": 21.28199959,
            "minimum": -21.16799927,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12453397,
            "variance": 123.755256
          },
          {
            "average": 0.5208802299,
            "count": 4312237,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995638837,
            "variance": 0.2495640739
          },
          {
            "average": 425.6588042,
            "count": 4312237,
            "maximum": 632,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 119.1331181,
            "variance": 14192.69982
          },
          {
            "average": 249236169.5,
            "count": 4312237,
            "maximum": 249242701.3,
            "minimum": 249233772.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3675.921908,
            "variance": 13512401.87
          },
          {
            "average": 0.5208802299,
            "count": 4312237,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995638837,
            "variance": 0.2495640739
          },
          {
            "average": 0,
            "count": 4312237,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4312237,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4312237,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2236994395,
            "count": 4312237,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4167229782,
            "variance": 0.1736580406
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94495.06182,
          2021494.728,
          541.1778594,
          94983.62182,
          2021975.528,
          1174.477859
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94495.06182235367,
                2021494.7275392252,
                541.1778593994918
              ],
              [
                94495.06182235367,
                2021975.527539225,
                541.1778593994918
              ],
              [
                94983.62182235367,
                2021975.527539225,
                1174.477859399492
              ],
              [
                94983.62182235367,
                2021494.7275392252,
                1174.477859399492
              ],
              [
                94495.06182235367,
                2021494.7275392252,
                541.1778593994918
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:41+00:00",
        "end_time": "2019-08-07T17:22:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000324.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000324.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000324.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000324.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7455442,
            68.13967629,
            541.1778594,
            -151.7335058,
            68.14417148,
            1174.477859
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74554417404522,
                  68.13982660532346,
                  541.1778593994918
                ],
                [
                  -151.74515485418493,
                  68.14417147851766,
                  541.1778593994918
                ],
                [
                  -151.73350584190763,
                  68.14402113073237,
                  1174.477859399492
                ],
                [
                  -151.73389716996195,
                  68.13967628585083,
                  1174.477859399492
                ],
                [
                  -151.74554417404522,
                  68.13982660532346,
                  541.1778593994918
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000324.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000324.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:41Z",
            "pc:count": 4312237,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94740.5947,
                "count": 4312237,
                "maximum": 94983.62182,
                "minimum": 94495.06182,
                "name": "X",
                "position": 0,
                "stddev": 132.7402476,
                "variance": 17619.97333
              },
              {
                "average": 2021739.338,
                "count": 4312237,
                "maximum": 2021975.528,
                "minimum": 2021494.728,
                "name": "Y",
                "position": 1,
                "stddev": 131.1986485,
                "variance": 17213.08537
              },
              {
                "average": 649.5551242,
                "count": 4312237,
                "maximum": 1174.477859,
                "minimum": 541.1778594,
                "name": "Z",
                "position": 2,
                "stddev": 6.274790552,
                "variance": 39.37299648
              },
              {
                "average": 44315.44011,
                "count": 4312237,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12219.745,
                "variance": 149322167.9
              },
              {
                "average": 1.030103401,
                "count": 4312237,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1733603912,
                "variance": 0.03005382525
              },
              {
                "average": 1.060202628,
                "count": 4312237,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2432001768,
                "variance": 0.05914632598
              },
              {
                "average": 0.511779385,
                "count": 4312237,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998612848,
                "variance": 0.249861304
              },
              {
                "average": 0.0004644920954,
                "count": 4312237,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02154707521,
                "variance": 0.0004642764502
              },
              {
                "average": 1.651037037,
                "count": 4312237,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.185104897,
                "variance": 1.404473618
              },
              {
                "average": -1.816977551,
                "count": 4312237,
                "maximum": 21.28199959,
                "minimum": -21.16799927,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12453397,
                "variance": 123.755256
              },
              {
                "average": 0.5208802299,
                "count": 4312237,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995638837,
                "variance": 0.2495640739
              },
              {
                "average": 425.6588042,
                "count": 4312237,
                "maximum": 632,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 119.1331181,
                "variance": 14192.69982
              },
              {
                "average": 249236169.5,
                "count": 4312237,
                "maximum": 249242701.3,
                "minimum": 249233772.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3675.921908,
                "variance": 13512401.87
              },
              {
                "average": 0.5208802299,
                "count": 4312237,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995638837,
                "variance": 0.2495640739
              },
              {
                "average": 0,
                "count": 4312237,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4312237,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4312237,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2236994395,
                "count": 4312237,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4167229782,
                "variance": 0.1736580406
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94495.06182,
              2021494.728,
              541.1778594,
              94983.62182,
              2021975.528,
              1174.477859
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94495.06182235367,
                    2021494.7275392252,
                    541.1778593994918
                  ],
                  [
                    94495.06182235367,
                    2021975.527539225,
                    541.1778593994918
                  ],
                  [
                    94983.62182235367,
                    2021975.527539225,
                    1174.477859399492
                  ],
                  [
                    94983.62182235367,
                    2021494.7275392252,
                    1174.477859399492
                  ],
                  [
                    94495.06182235367,
                    2021494.7275392252,
                    541.1778593994918
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:41+00:00",
            "end_time": "2019-08-07T17:22:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000321.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7785269790944,
              68.13947606508087,
              687.8196088089187
            ],
            [
              -151.7781433901258,
              68.14382064404244,
              687.8196088089187
            ],
            [
              -151.76649434409953,
              68.14367248954566,
              705.3596088089187
            ],
            [
              -151.76687994117432,
              68.13932793848133,
              705.3596088089187
            ],
            [
              -151.7785269790944,
              68.13947606508087,
              687.8196088089187
            ]
          ]
        ]
      },
      "bbox": [
        -151.778527,
        68.13932794,
        687.8196088,
        -151.7664943,
        68.14382064,
        705.3596088
      ],
      "properties": {
        "datetime": "2019-08-07T20:02:12Z",
        "pc:count": 5430822,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93362.12151,
            "count": 5430822,
            "maximum": 93602.97026,
            "minimum": 93114.41026,
            "name": "X",
            "position": 0,
            "stddev": 135.3204017,
            "variance": 18311.61113
          },
          {
            "average": 2021649.106,
            "count": 5430822,
            "maximum": 2021890.153,
            "minimum": 2021409.393,
            "name": "Y",
            "position": 1,
            "stddev": 132.2087126,
            "variance": 17479.1437
          },
          {
            "average": 694.8245665,
            "count": 5430822,
            "maximum": 705.3596088,
            "minimum": 687.8196088,
            "name": "Z",
            "position": 2,
            "stddev": 2.928016418,
            "variance": 8.573280145
          },
          {
            "average": 51255.32303,
            "count": 5430822,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 7004.05421,
            "variance": 49056775.38
          },
          {
            "average": 1.000000737,
            "count": 5430822,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008582169573,
            "variance": 7.365363458e-07
          },
          {
            "average": 1.000001473,
            "count": 5430822,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001213701613,
            "variance": 1.473071607e-06
          },
          {
            "average": 0.4980236878,
            "count": 5430822,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999961402,
            "variance": 0.2499961402
          },
          {
            "average": 0.0004868507935,
            "count": 5430822,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02205932591,
            "variance": 0.0004866138594
          },
          {
            "average": 1.245092364,
            "count": 5430822,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.431829586,
            "variance": 0.1864767913
          },
          {
            "average": 1.187484836,
            "count": 5430822,
            "maximum": 21.54000092,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.95207756,
            "variance": 119.948003
          },
          {
            "average": 0.4915994301,
            "count": 5430822,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999294715,
            "variance": 0.2499294764
          },
          {
            "average": 410.7355909,
            "count": 5430822,
            "maximum": 634,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 104.9042382,
            "variance": 11004.89919
          },
          {
            "average": 249236263.6,
            "count": 5430822,
            "maximum": 249243332.7,
            "minimum": 249234415.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3171.480203,
            "variance": 10058286.68
          },
          {
            "average": 0.4915994301,
            "count": 5430822,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999294715,
            "variance": 0.2499294764
          },
          {
            "average": 0,
            "count": 5430822,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5430822,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5430822,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2399898211,
            "count": 5430822,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4270769725,
            "variance": 0.1823947404
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93114.41026,
          2021409.393,
          687.8196088,
          93602.97026,
          2021890.153,
          705.3596088
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93114.41026430624,
                2021409.3933079478,
                687.8196088089187
              ],
              [
                93114.41026430624,
                2021890.1533079476,
                687.8196088089187
              ],
              [
                93602.97026430623,
                2021890.1533079476,
                705.3596088089187
              ],
              [
                93602.97026430623,
                2021409.3933079478,
                705.3596088089187
              ],
              [
                93114.41026430624,
                2021409.3933079478,
                687.8196088089187
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:02:12+00:00",
        "end_time": "2019-08-07T17:33:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000321.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000321.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000321.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000321.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.778527,
            68.13932794,
            687.8196088,
            -151.7664943,
            68.14382064,
            705.3596088
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7785269790944,
                  68.13947606508087,
                  687.8196088089187
                ],
                [
                  -151.7781433901258,
                  68.14382064404244,
                  687.8196088089187
                ],
                [
                  -151.76649434409953,
                  68.14367248954566,
                  705.3596088089187
                ],
                [
                  -151.76687994117432,
                  68.13932793848133,
                  705.3596088089187
                ],
                [
                  -151.7785269790944,
                  68.13947606508087,
                  687.8196088089187
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000321.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000321.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:02:12Z",
            "pc:count": 5430822,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93362.12151,
                "count": 5430822,
                "maximum": 93602.97026,
                "minimum": 93114.41026,
                "name": "X",
                "position": 0,
                "stddev": 135.3204017,
                "variance": 18311.61113
              },
              {
                "average": 2021649.106,
                "count": 5430822,
                "maximum": 2021890.153,
                "minimum": 2021409.393,
                "name": "Y",
                "position": 1,
                "stddev": 132.2087126,
                "variance": 17479.1437
              },
              {
                "average": 694.8245665,
                "count": 5430822,
                "maximum": 705.3596088,
                "minimum": 687.8196088,
                "name": "Z",
                "position": 2,
                "stddev": 2.928016418,
                "variance": 8.573280145
              },
              {
                "average": 51255.32303,
                "count": 5430822,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 7004.05421,
                "variance": 49056775.38
              },
              {
                "average": 1.000000737,
                "count": 5430822,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008582169573,
                "variance": 7.365363458e-07
              },
              {
                "average": 1.000001473,
                "count": 5430822,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001213701613,
                "variance": 1.473071607e-06
              },
              {
                "average": 0.4980236878,
                "count": 5430822,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999961402,
                "variance": 0.2499961402
              },
              {
                "average": 0.0004868507935,
                "count": 5430822,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02205932591,
                "variance": 0.0004866138594
              },
              {
                "average": 1.245092364,
                "count": 5430822,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.431829586,
                "variance": 0.1864767913
              },
              {
                "average": 1.187484836,
                "count": 5430822,
                "maximum": 21.54000092,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.95207756,
                "variance": 119.948003
              },
              {
                "average": 0.4915994301,
                "count": 5430822,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999294715,
                "variance": 0.2499294764
              },
              {
                "average": 410.7355909,
                "count": 5430822,
                "maximum": 634,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 104.9042382,
                "variance": 11004.89919
              },
              {
                "average": 249236263.6,
                "count": 5430822,
                "maximum": 249243332.7,
                "minimum": 249234415.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3171.480203,
                "variance": 10058286.68
              },
              {
                "average": 0.4915994301,
                "count": 5430822,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999294715,
                "variance": 0.2499294764
              },
              {
                "average": 0,
                "count": 5430822,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5430822,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5430822,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2399898211,
                "count": 5430822,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4270769725,
                "variance": 0.1823947404
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93114.41026,
              2021409.393,
              687.8196088,
              93602.97026,
              2021890.153,
              705.3596088
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93114.41026430624,
                    2021409.3933079478,
                    687.8196088089187
                  ],
                  [
                    93114.41026430624,
                    2021890.1533079476,
                    687.8196088089187
                  ],
                  [
                    93602.97026430623,
                    2021890.1533079476,
                    705.3596088089187
                  ],
                  [
                    93602.97026430623,
                    2021409.3933079478,
                    705.3596088089187
                  ],
                  [
                    93114.41026430624,
                    2021409.3933079478,
                    687.8196088089187
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:02:12+00:00",
            "end_time": "2019-08-07T17:33:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000431.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71377863276467,
              68.15656163821662,
              640.1544853895784
            ],
            [
              -151.7133837147568,
              68.1609050772659,
              640.1544853895784
            ],
            [
              -151.70173000785914,
              68.16075264538652,
              1702.5344853895785
            ],
            [
              -151.70212693535498,
              68.15640923505731,
              1702.5344853895785
            ],
            [
              -151.71377863276467,
              68.15656163821662,
              640.1544853895784
            ]
          ]
        ]
      },
      "bbox": [
        -151.7137786,
        68.15640924,
        640.1544854,
        -151.70173,
        68.16090508,
        1702.534485
      ],
      "properties": {
        "datetime": "2019-08-07T20:21:34Z",
        "pc:count": 4771348,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96013.61297,
            "count": 4771348,
            "maximum": 96250.72478,
            "minimum": 95762.28478,
            "name": "X",
            "position": 0,
            "stddev": 132.9086191,
            "variance": 17664.70103
          },
          {
            "average": 2023642.675,
            "count": 4771348,
            "maximum": 2023870.544,
            "minimum": 2023389.924,
            "name": "Y",
            "position": 1,
            "stddev": 131.2030431,
            "variance": 17214.23851
          },
          {
            "average": 648.1592144,
            "count": 4771348,
            "maximum": 1702.534485,
            "minimum": 640.1544854,
            "name": "Z",
            "position": 2,
            "stddev": 3.847454239,
            "variance": 14.80290412
          },
          {
            "average": 49596.50932,
            "count": 4771348,
            "maximum": 65535,
            "minimum": 307,
            "name": "Intensity",
            "position": 3,
            "stddev": 7620.708696,
            "variance": 58075201.03
          },
          {
            "average": 1.000059103,
            "count": 4771348,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007687607799,
            "variance": 5.909931368e-05
          },
          {
            "average": 1.000118625,
            "count": 4771348,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01089085445,
            "variance": 0.0001186107106
          },
          {
            "average": 0.5034380221,
            "count": 4771348,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999882323,
            "variance": 0.2499882324
          },
          {
            "average": 0.0005964771381,
            "count": 4771348,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02441559907,
            "variance": 0.0005961214781
          },
          {
            "average": 1.231396452,
            "count": 4771348,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4301443366,
            "variance": 0.1850241503
          },
          {
            "average": 0.112846452,
            "count": 4771348,
            "maximum": 21.5340004,
            "minimum": -21.16200066,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.64838722,
            "variance": 135.6849249
          },
          {
            "average": 0.5030293326,
            "count": 4771348,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999908755,
            "variance": 0.2499908755
          },
          {
            "average": 420.7707262,
            "count": 4771348,
            "maximum": 638,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.3147374,
            "variance": 14475.63603
          },
          {
            "average": 249235741,
            "count": 4771348,
            "maximum": 249244494.9,
            "minimum": 249233140.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4188.026345,
            "variance": 17539564.67
          },
          {
            "average": 0.5030293326,
            "count": 4771348,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999908755,
            "variance": 0.2499908755
          },
          {
            "average": 0,
            "count": 4771348,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4771348,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4771348,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2820557209,
            "count": 4771348,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4500003707,
            "variance": 0.2025003337
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95762.28478,
          2023389.924,
          640.1544854,
          96250.72478,
          2023870.544,
          1702.534485
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95762.28477664819,
                2023389.9238078394,
                640.1544853895784
              ],
              [
                95762.28477664819,
                2023870.5438078395,
                640.1544853895784
              ],
              [
                96250.72477664819,
                2023870.5438078395,
                1702.5344853895785
              ],
              [
                96250.72477664819,
                2023389.9238078394,
                1702.5344853895785
              ],
              [
                95762.28477664819,
                2023389.9238078394,
                640.1544853895784
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:21:34+00:00",
        "end_time": "2019-08-07T17:12:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000431.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000431.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000431.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000431.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7137786,
            68.15640924,
            640.1544854,
            -151.70173,
            68.16090508,
            1702.534485
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71377863276467,
                  68.15656163821662,
                  640.1544853895784
                ],
                [
                  -151.7133837147568,
                  68.1609050772659,
                  640.1544853895784
                ],
                [
                  -151.70173000785914,
                  68.16075264538652,
                  1702.5344853895785
                ],
                [
                  -151.70212693535498,
                  68.15640923505731,
                  1702.5344853895785
                ],
                [
                  -151.71377863276467,
                  68.15656163821662,
                  640.1544853895784
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000431.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000431.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:21:34Z",
            "pc:count": 4771348,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96013.61297,
                "count": 4771348,
                "maximum": 96250.72478,
                "minimum": 95762.28478,
                "name": "X",
                "position": 0,
                "stddev": 132.9086191,
                "variance": 17664.70103
              },
              {
                "average": 2023642.675,
                "count": 4771348,
                "maximum": 2023870.544,
                "minimum": 2023389.924,
                "name": "Y",
                "position": 1,
                "stddev": 131.2030431,
                "variance": 17214.23851
              },
              {
                "average": 648.1592144,
                "count": 4771348,
                "maximum": 1702.534485,
                "minimum": 640.1544854,
                "name": "Z",
                "position": 2,
                "stddev": 3.847454239,
                "variance": 14.80290412
              },
              {
                "average": 49596.50932,
                "count": 4771348,
                "maximum": 65535,
                "minimum": 307,
                "name": "Intensity",
                "position": 3,
                "stddev": 7620.708696,
                "variance": 58075201.03
              },
              {
                "average": 1.000059103,
                "count": 4771348,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007687607799,
                "variance": 5.909931368e-05
              },
              {
                "average": 1.000118625,
                "count": 4771348,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01089085445,
                "variance": 0.0001186107106
              },
              {
                "average": 0.5034380221,
                "count": 4771348,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999882323,
                "variance": 0.2499882324
              },
              {
                "average": 0.0005964771381,
                "count": 4771348,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02441559907,
                "variance": 0.0005961214781
              },
              {
                "average": 1.231396452,
                "count": 4771348,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4301443366,
                "variance": 0.1850241503
              },
              {
                "average": 0.112846452,
                "count": 4771348,
                "maximum": 21.5340004,
                "minimum": -21.16200066,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.64838722,
                "variance": 135.6849249
              },
              {
                "average": 0.5030293326,
                "count": 4771348,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999908755,
                "variance": 0.2499908755
              },
              {
                "average": 420.7707262,
                "count": 4771348,
                "maximum": 638,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.3147374,
                "variance": 14475.63603
              },
              {
                "average": 249235741,
                "count": 4771348,
                "maximum": 249244494.9,
                "minimum": 249233140.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4188.026345,
                "variance": 17539564.67
              },
              {
                "average": 0.5030293326,
                "count": 4771348,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999908755,
                "variance": 0.2499908755
              },
              {
                "average": 0,
                "count": 4771348,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4771348,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4771348,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2820557209,
                "count": 4771348,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4500003707,
                "variance": 0.2025003337
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95762.28478,
              2023389.924,
              640.1544854,
              96250.72478,
              2023870.544,
              1702.534485
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95762.28477664819,
                    2023389.9238078394,
                    640.1544853895784
                  ],
                  [
                    95762.28477664819,
                    2023870.5438078395,
                    640.1544853895784
                  ],
                  [
                    96250.72477664819,
                    2023870.5438078395,
                    1702.5344853895785
                  ],
                  [
                    96250.72477664819,
                    2023389.9238078394,
                    1702.5344853895785
                  ],
                  [
                    95762.28477664819,
                    2023389.9238078394,
                    640.1544853895784
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:21:34+00:00",
            "end_time": "2019-08-07T17:12:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000222.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7223275329169,
              68.12366677693497,
              672.3122873243603
            ],
            [
              -151.7219344740919,
              68.12801116386888,
              672.3122873243603
            ],
            [
              -151.71029402920345,
              68.12785929399077,
              709.8722873243603
            ],
            [
              -151.71068909330253,
              68.12351493562949,
              709.8722873243603
            ],
            [
              -151.7223275329169,
              68.12366677693497,
              672.3122873243603
            ]
          ]
        ]
      },
      "bbox": [
        -151.7223275,
        68.12351494,
        672.3122873,
        -151.710294,
        68.12801116,
        709.8722873
      ],
      "properties": {
        "datetime": "2019-08-07T19:35:08Z",
        "pc:count": 4452845,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95774.1131,
            "count": 4452845,
            "maximum": 96017.60823,
            "minimum": 95529.08823,
            "name": "X",
            "position": 0,
            "stddev": 131.4851592,
            "variance": 17288.3471
          },
          {
            "average": 2019989.642,
            "count": 4452845,
            "maximum": 2020222.494,
            "minimum": 2019741.714,
            "name": "Y",
            "position": 1,
            "stddev": 128.4366388,
            "variance": 16495.97018
          },
          {
            "average": 689.7699766,
            "count": 4452845,
            "maximum": 709.8722873,
            "minimum": 672.3122873,
            "name": "Z",
            "position": 2,
            "stddev": 5.715536395,
            "variance": 32.66735628
          },
          {
            "average": 52477.12491,
            "count": 4452845,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7429.153404,
            "variance": 55192320.31
          },
          {
            "average": 1.000012801,
            "count": 4452845,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00357779875,
            "variance": 1.280064389e-05
          },
          {
            "average": 1.000025602,
            "count": 4452845,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00505973913,
            "variance": 2.560096006e-05
          },
          {
            "average": 0.5042924243,
            "count": 4452845,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999816309,
            "variance": 0.2499816312
          },
          {
            "average": 0.0005975954699,
            "count": 4452845,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0244384632,
            "variance": 0.0005972384836
          },
          {
            "average": 1.235598365,
            "count": 4452845,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5418946414,
            "variance": 0.2936498024
          },
          {
            "average": 0.3623645517,
            "count": 4452845,
            "maximum": 21.45000076,
            "minimum": -20.94599915,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.79357496,
            "variance": 139.0884103
          },
          {
            "average": 0.5197784787,
            "count": 4452845,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996087147,
            "variance": 0.2496088678
          },
          {
            "average": 438.6041196,
            "count": 4452845,
            "maximum": 629,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 126.4080991,
            "variance": 15979.00751
          },
          {
            "average": 249236004.9,
            "count": 4452845,
            "maximum": 249241708,
            "minimum": 249233406.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3563.569021,
            "variance": 12699024.17
          },
          {
            "average": 0.5197784787,
            "count": 4452845,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996087147,
            "variance": 0.2496088678
          },
          {
            "average": 0,
            "count": 4452845,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4452845,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4452845,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2673079795,
            "count": 4452845,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4425544798,
            "variance": 0.1958544676
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95529.08823,
          2019741.714,
          672.3122873,
          96017.60823,
          2020222.494,
          709.8722873
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95529.08822882579,
                2019741.7143951866,
                672.3122873243603
              ],
              [
                95529.08822882579,
                2020222.4943951864,
                672.3122873243603
              ],
              [
                96017.60822882577,
                2020222.4943951864,
                709.8722873243603
              ],
              [
                96017.60822882577,
                2019741.7143951866,
                709.8722873243603
              ],
              [
                95529.08822882579,
                2019741.7143951866,
                672.3122873243603
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:35:08+00:00",
        "end_time": "2019-08-07T17:16:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000222.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000222.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000222.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000222.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7223275,
            68.12351494,
            672.3122873,
            -151.710294,
            68.12801116,
            709.8722873
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7223275329169,
                  68.12366677693497,
                  672.3122873243603
                ],
                [
                  -151.7219344740919,
                  68.12801116386888,
                  672.3122873243603
                ],
                [
                  -151.71029402920345,
                  68.12785929399077,
                  709.8722873243603
                ],
                [
                  -151.71068909330253,
                  68.12351493562949,
                  709.8722873243603
                ],
                [
                  -151.7223275329169,
                  68.12366677693497,
                  672.3122873243603
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000222.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000222.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:35:08Z",
            "pc:count": 4452845,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95774.1131,
                "count": 4452845,
                "maximum": 96017.60823,
                "minimum": 95529.08823,
                "name": "X",
                "position": 0,
                "stddev": 131.4851592,
                "variance": 17288.3471
              },
              {
                "average": 2019989.642,
                "count": 4452845,
                "maximum": 2020222.494,
                "minimum": 2019741.714,
                "name": "Y",
                "position": 1,
                "stddev": 128.4366388,
                "variance": 16495.97018
              },
              {
                "average": 689.7699766,
                "count": 4452845,
                "maximum": 709.8722873,
                "minimum": 672.3122873,
                "name": "Z",
                "position": 2,
                "stddev": 5.715536395,
                "variance": 32.66735628
              },
              {
                "average": 52477.12491,
                "count": 4452845,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7429.153404,
                "variance": 55192320.31
              },
              {
                "average": 1.000012801,
                "count": 4452845,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00357779875,
                "variance": 1.280064389e-05
              },
              {
                "average": 1.000025602,
                "count": 4452845,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00505973913,
                "variance": 2.560096006e-05
              },
              {
                "average": 0.5042924243,
                "count": 4452845,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999816309,
                "variance": 0.2499816312
              },
              {
                "average": 0.0005975954699,
                "count": 4452845,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0244384632,
                "variance": 0.0005972384836
              },
              {
                "average": 1.235598365,
                "count": 4452845,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5418946414,
                "variance": 0.2936498024
              },
              {
                "average": 0.3623645517,
                "count": 4452845,
                "maximum": 21.45000076,
                "minimum": -20.94599915,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.79357496,
                "variance": 139.0884103
              },
              {
                "average": 0.5197784787,
                "count": 4452845,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996087147,
                "variance": 0.2496088678
              },
              {
                "average": 438.6041196,
                "count": 4452845,
                "maximum": 629,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 126.4080991,
                "variance": 15979.00751
              },
              {
                "average": 249236004.9,
                "count": 4452845,
                "maximum": 249241708,
                "minimum": 249233406.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3563.569021,
                "variance": 12699024.17
              },
              {
                "average": 0.5197784787,
                "count": 4452845,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996087147,
                "variance": 0.2496088678
              },
              {
                "average": 0,
                "count": 4452845,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4452845,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4452845,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2673079795,
                "count": 4452845,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4425544798,
                "variance": 0.1958544676
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95529.08823,
              2019741.714,
              672.3122873,
              96017.60823,
              2020222.494,
              709.8722873
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95529.08822882579,
                    2019741.7143951866,
                    672.3122873243603
                  ],
                  [
                    95529.08822882579,
                    2020222.4943951864,
                    672.3122873243603
                  ],
                  [
                    96017.60822882577,
                    2020222.4943951864,
                    709.8722873243603
                  ],
                  [
                    96017.60822882577,
                    2019741.7143951866,
                    709.8722873243603
                  ],
                  [
                    95529.08822882579,
                    2019741.7143951866,
                    672.3122873243603
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:35:08+00:00",
            "end_time": "2019-08-07T17:16:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000426.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76879335240616,
              68.15598386192576,
              724.5315076800787
            ],
            [
              -151.7684078625746,
              68.16032831805269,
              724.5315076800787
            ],
            [
              -151.75675170669754,
              68.16017951327392,
              875.0915076800786
            ],
            [
              -151.7571392069822,
              68.15583508518941,
              875.0915076800786
            ],
            [
              -151.76879335240616,
              68.15598386192576,
              724.5315076800787
            ]
          ]
        ]
      },
      "bbox": [
        -151.7687934,
        68.15583509,
        724.5315077,
        -151.7567517,
        68.16032832,
        875.0915077
      ],
      "properties": {
        "datetime": "2019-08-18T19:03:13Z",
        "pc:count": 5618018,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93695.46778,
            "count": 5618018,
            "maximum": 93949.46342,
            "minimum": 93460.92342,
            "name": "X",
            "position": 0,
            "stddev": 131.9212768,
            "variance": 17403.22327
          },
          {
            "average": 2023486.524,
            "count": 5618018,
            "maximum": 2023728.409,
            "minimum": 2023247.689,
            "name": "Y",
            "position": 1,
            "stddev": 130.0350618,
            "variance": 16909.11731
          },
          {
            "average": 782.5328513,
            "count": 5618018,
            "maximum": 875.0915077,
            "minimum": 724.5315077,
            "name": "Z",
            "position": 2,
            "stddev": 33.92073286,
            "variance": 1150.616118
          },
          {
            "average": 46476.33734,
            "count": 5618018,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10383.34602,
            "variance": 107813874.5
          },
          {
            "average": 1.000564612,
            "count": 5618018,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02400085756,
            "variance": 0.0005760411638
          },
          {
            "average": 1.001130292,
            "count": 5618018,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03412122874,
            "variance": 0.001164258251
          },
          {
            "average": 0.4950436257,
            "count": 5618018,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999754782,
            "variance": 0.2499754788
          },
          {
            "average": 0.0004955484301,
            "count": 5618018,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02225540271,
            "variance": 0.00049530295
          },
          {
            "average": 1.269735875,
            "count": 5618018,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5863458435,
            "variance": 0.3438014481
          },
          {
            "average": 0.4070645048,
            "count": 5618018,
            "maximum": 21.74399948,
            "minimum": -21.04199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.79771781,
            "variance": 139.1861454
          },
          {
            "average": 0.483338964,
            "count": 5618018,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997223773,
            "variance": 0.2497224543
          },
          {
            "average": 457.009124,
            "count": 5618018,
            "maximum": 723,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 136.986232,
            "variance": 18765.22776
          },
          {
            "average": 249283795.8,
            "count": 5618018,
            "maximum": 250190193.5,
            "minimum": 249234214.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 205148.7302,
            "variance": 42086001510.0
          },
          {
            "average": 0.483338964,
            "count": 5618018,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997223773,
            "variance": 0.2497224543
          },
          {
            "average": 0,
            "count": 5618018,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5618018,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5618018,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.188511856,
            "count": 5618018,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.391120395,
            "variance": 0.1529751634
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93460.92342,
          2023247.689,
          724.5315077,
          93949.46342,
          2023728.409,
          875.0915077
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93460.92342460435,
                2023247.6886917814,
                724.5315076800787
              ],
              [
                93460.92342460435,
                2023728.4086917816,
                724.5315076800787
              ],
              [
                93949.46342460436,
                2023728.4086917816,
                875.0915076800786
              ],
              [
                93949.46342460436,
                2023247.6886917814,
                875.0915076800786
              ],
              [
                93460.92342460435,
                2023247.6886917814,
                724.5315076800787
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-18T19:03:13+00:00",
        "end_time": "2019-08-07T17:30:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000426.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000426.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000426.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000426.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7687934,
            68.15583509,
            724.5315077,
            -151.7567517,
            68.16032832,
            875.0915077
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76879335240616,
                  68.15598386192576,
                  724.5315076800787
                ],
                [
                  -151.7684078625746,
                  68.16032831805269,
                  724.5315076800787
                ],
                [
                  -151.75675170669754,
                  68.16017951327392,
                  875.0915076800786
                ],
                [
                  -151.7571392069822,
                  68.15583508518941,
                  875.0915076800786
                ],
                [
                  -151.76879335240616,
                  68.15598386192576,
                  724.5315076800787
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000426.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000426.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-18T19:03:13Z",
            "pc:count": 5618018,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93695.46778,
                "count": 5618018,
                "maximum": 93949.46342,
                "minimum": 93460.92342,
                "name": "X",
                "position": 0,
                "stddev": 131.9212768,
                "variance": 17403.22327
              },
              {
                "average": 2023486.524,
                "count": 5618018,
                "maximum": 2023728.409,
                "minimum": 2023247.689,
                "name": "Y",
                "position": 1,
                "stddev": 130.0350618,
                "variance": 16909.11731
              },
              {
                "average": 782.5328513,
                "count": 5618018,
                "maximum": 875.0915077,
                "minimum": 724.5315077,
                "name": "Z",
                "position": 2,
                "stddev": 33.92073286,
                "variance": 1150.616118
              },
              {
                "average": 46476.33734,
                "count": 5618018,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10383.34602,
                "variance": 107813874.5
              },
              {
                "average": 1.000564612,
                "count": 5618018,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02400085756,
                "variance": 0.0005760411638
              },
              {
                "average": 1.001130292,
                "count": 5618018,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03412122874,
                "variance": 0.001164258251
              },
              {
                "average": 0.4950436257,
                "count": 5618018,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999754782,
                "variance": 0.2499754788
              },
              {
                "average": 0.0004955484301,
                "count": 5618018,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02225540271,
                "variance": 0.00049530295
              },
              {
                "average": 1.269735875,
                "count": 5618018,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5863458435,
                "variance": 0.3438014481
              },
              {
                "average": 0.4070645048,
                "count": 5618018,
                "maximum": 21.74399948,
                "minimum": -21.04199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.79771781,
                "variance": 139.1861454
              },
              {
                "average": 0.483338964,
                "count": 5618018,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997223773,
                "variance": 0.2497224543
              },
              {
                "average": 457.009124,
                "count": 5618018,
                "maximum": 723,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 136.986232,
                "variance": 18765.22776
              },
              {
                "average": 249283795.8,
                "count": 5618018,
                "maximum": 250190193.5,
                "minimum": 249234214.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 205148.7302,
                "variance": 42086001510.0
              },
              {
                "average": 0.483338964,
                "count": 5618018,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997223773,
                "variance": 0.2497224543
              },
              {
                "average": 0,
                "count": 5618018,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5618018,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5618018,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.188511856,
                "count": 5618018,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.391120395,
                "variance": 0.1529751634
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93460.92342,
              2023247.689,
              724.5315077,
              93949.46342,
              2023728.409,
              875.0915077
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93460.92342460435,
                    2023247.6886917814,
                    724.5315076800787
                  ],
                  [
                    93460.92342460435,
                    2023728.4086917816,
                    724.5315076800787
                  ],
                  [
                    93949.46342460436,
                    2023728.4086917816,
                    875.0915076800786
                  ],
                  [
                    93949.46342460436,
                    2023247.6886917814,
                    875.0915076800786
                  ],
                  [
                    93460.92342460435,
                    2023247.6886917814,
                    724.5315076800787
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-18T19:03:13+00:00",
            "end_time": "2019-08-07T17:30:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000224.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.700353139796,
              68.12389372089007,
              728.2307992397563
            ],
            [
              -151.69995628677458,
              68.12823806181312,
              728.2307992397563
            ],
            [
              -151.68831730018888,
              68.12808474980751,
              1355.9707992397562
            ],
            [
              -151.68871615818227,
              68.12374043772842,
              1355.9707992397562
            ],
            [
              -151.700353139796,
              68.12389372089007,
              728.2307992397563
            ]
          ]
        ]
      },
      "bbox": [
        -151.7003531,
        68.12374044,
        728.2307992,
        -151.6883173,
        68.12823806,
        1355.970799
      ],
      "properties": {
        "datetime": "2019-08-07T19:29:25Z",
        "pc:count": 5467723,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96697.5391,
            "count": 5467723,
            "maximum": 96937.95246,
            "minimum": 96449.49246,
            "name": "X",
            "position": 0,
            "stddev": 133.4556094,
            "variance": 17810.39969
          },
          {
            "average": 2020038.311,
            "count": 5467723,
            "maximum": 2020279.341,
            "minimum": 2019798.561,
            "name": "Y",
            "position": 1,
            "stddev": 132.4613151,
            "variance": 17545.99999
          },
          {
            "average": 793.0084524,
            "count": 5467723,
            "maximum": 1355.970799,
            "minimum": 728.2307992,
            "name": "Z",
            "position": 2,
            "stddev": 36.05538208,
            "variance": 1299.990577
          },
          {
            "average": 46802.46647,
            "count": 5467723,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9604.42036,
            "variance": 92244890.45
          },
          {
            "average": 1.000621831,
            "count": 5467723,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02569469799,
            "variance": 0.0006602175045
          },
          {
            "average": 1.001246954,
            "count": 5467723,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03692128985,
            "variance": 0.001363181644
          },
          {
            "average": 0.4965039377,
            "count": 5467723,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999878231,
            "variance": 0.2499878233
          },
          {
            "average": 0.000410042718,
            "count": 5467723,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02024536139,
            "variance": 0.0004098746579
          },
          {
            "average": 1.22774142,
            "count": 5467723,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5295767866,
            "variance": 0.2804515729
          },
          {
            "average": -0.6683456033,
            "count": 5467723,
            "maximum": 21.51000023,
            "minimum": -20.94599915,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.21543516,
            "variance": 125.7859859
          },
          {
            "average": 0.474604328,
            "count": 5467723,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499354689,
            "variance": 0.2493551054
          },
          {
            "average": 437.822476,
            "count": 5467723,
            "maximum": 628,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 127.5641482,
            "variance": 16272.6119
          },
          {
            "average": 249235589.8,
            "count": 5467723,
            "maximum": 249241365,
            "minimum": 249232958.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3566.067634,
            "variance": 12716838.37
          },
          {
            "average": 0.474604328,
            "count": 5467723,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499354689,
            "variance": 0.2493551054
          },
          {
            "average": 0,
            "count": 5467723,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5467723,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5467723,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1795363445,
            "count": 5467723,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3838008239,
            "variance": 0.1473030724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96449.49246,
          2019798.561,
          728.2307992,
          96937.95246,
          2020279.341,
          1355.970799
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96449.49245834968,
                2019798.5614740301,
                728.2307992397563
              ],
              [
                96449.49245834968,
                2020279.34147403,
                728.2307992397563
              ],
              [
                96937.95245834967,
                2020279.34147403,
                1355.9707992397562
              ],
              [
                96937.95245834967,
                2019798.5614740301,
                1355.9707992397562
              ],
              [
                96449.49245834968,
                2019798.5614740301,
                728.2307992397563
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:29:25+00:00",
        "end_time": "2019-08-07T17:09:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000224.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000224.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000224.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000224.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7003531,
            68.12374044,
            728.2307992,
            -151.6883173,
            68.12823806,
            1355.970799
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.700353139796,
                  68.12389372089007,
                  728.2307992397563
                ],
                [
                  -151.69995628677458,
                  68.12823806181312,
                  728.2307992397563
                ],
                [
                  -151.68831730018888,
                  68.12808474980751,
                  1355.9707992397562
                ],
                [
                  -151.68871615818227,
                  68.12374043772842,
                  1355.9707992397562
                ],
                [
                  -151.700353139796,
                  68.12389372089007,
                  728.2307992397563
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000224.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000224.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:29:25Z",
            "pc:count": 5467723,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96697.5391,
                "count": 5467723,
                "maximum": 96937.95246,
                "minimum": 96449.49246,
                "name": "X",
                "position": 0,
                "stddev": 133.4556094,
                "variance": 17810.39969
              },
              {
                "average": 2020038.311,
                "count": 5467723,
                "maximum": 2020279.341,
                "minimum": 2019798.561,
                "name": "Y",
                "position": 1,
                "stddev": 132.4613151,
                "variance": 17545.99999
              },
              {
                "average": 793.0084524,
                "count": 5467723,
                "maximum": 1355.970799,
                "minimum": 728.2307992,
                "name": "Z",
                "position": 2,
                "stddev": 36.05538208,
                "variance": 1299.990577
              },
              {
                "average": 46802.46647,
                "count": 5467723,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9604.42036,
                "variance": 92244890.45
              },
              {
                "average": 1.000621831,
                "count": 5467723,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02569469799,
                "variance": 0.0006602175045
              },
              {
                "average": 1.001246954,
                "count": 5467723,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03692128985,
                "variance": 0.001363181644
              },
              {
                "average": 0.4965039377,
                "count": 5467723,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999878231,
                "variance": 0.2499878233
              },
              {
                "average": 0.000410042718,
                "count": 5467723,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02024536139,
                "variance": 0.0004098746579
              },
              {
                "average": 1.22774142,
                "count": 5467723,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5295767866,
                "variance": 0.2804515729
              },
              {
                "average": -0.6683456033,
                "count": 5467723,
                "maximum": 21.51000023,
                "minimum": -20.94599915,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.21543516,
                "variance": 125.7859859
              },
              {
                "average": 0.474604328,
                "count": 5467723,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499354689,
                "variance": 0.2493551054
              },
              {
                "average": 437.822476,
                "count": 5467723,
                "maximum": 628,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 127.5641482,
                "variance": 16272.6119
              },
              {
                "average": 249235589.8,
                "count": 5467723,
                "maximum": 249241365,
                "minimum": 249232958.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3566.067634,
                "variance": 12716838.37
              },
              {
                "average": 0.474604328,
                "count": 5467723,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499354689,
                "variance": 0.2493551054
              },
              {
                "average": 0,
                "count": 5467723,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5467723,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5467723,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1795363445,
                "count": 5467723,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3838008239,
                "variance": 0.1473030724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96449.49246,
              2019798.561,
              728.2307992,
              96937.95246,
              2020279.341,
              1355.970799
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96449.49245834968,
                    2019798.5614740301,
                    728.2307992397563
                  ],
                  [
                    96449.49245834968,
                    2020279.34147403,
                    728.2307992397563
                  ],
                  [
                    96937.95245834967,
                    2020279.34147403,
                    1355.9707992397562
                  ],
                  [
                    96937.95245834967,
                    2019798.5614740301,
                    1355.9707992397562
                  ],
                  [
                    96449.49245834968,
                    2019798.5614740301,
                    728.2307992397563
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:29:25+00:00",
            "end_time": "2019-08-07T17:09:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000273.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73393149979557,
              68.13174732562291,
              630.9888139389169
            ],
            [
              -151.73354028462887,
              68.13609222673412,
              630.9888139389169
            ],
            [
              -151.72189794036157,
              68.13594114856842,
              672.628813938917
            ],
            [
              -151.7222911619763,
              68.13159627589587,
              672.628813938917
            ],
            [
              -151.73393149979557,
              68.13174732562291,
              630.9888139389169
            ]
          ]
        ]
      },
      "bbox": [
        -151.7339315,
        68.13159628,
        630.9888139,
        -151.7218979,
        68.13609223,
        672.6288139
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:26Z",
        "pc:count": 4379397,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95257.66298,
            "count": 4379397,
            "maximum": 95500.54,
            "minimum": 95012.1,
            "name": "X",
            "position": 0,
            "stddev": 135.2297897,
            "variance": 18287.09603
          },
          {
            "average": 2020853.252,
            "count": 4379397,
            "maximum": 2021099.083,
            "minimum": 2020618.263,
            "name": "Y",
            "position": 1,
            "stddev": 128.2718455,
            "variance": 16453.66634
          },
          {
            "average": 651.9549702,
            "count": 4379397,
            "maximum": 672.6288139,
            "minimum": 630.9888139,
            "name": "Z",
            "position": 2,
            "stddev": 12.54633254,
            "variance": 157.4104603
          },
          {
            "average": 46100.06333,
            "count": 4379397,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12446.10469,
            "variance": 154905521.9
          },
          {
            "average": 1.020488665,
            "count": 4379397,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1430186208,
            "variance": 0.0204543259
          },
          {
            "average": 1.041002677,
            "count": 4379397,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2012170318,
            "variance": 0.04048829389
          },
          {
            "average": 0.4988878606,
            "count": 4379397,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988202,
            "variance": 0.2499988202
          },
          {
            "average": 0.0004512036703,
            "count": 4379397,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02123676502,
            "variance": 0.0004510001885
          },
          {
            "average": 1.486335219,
            "count": 4379397,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.875633966,
            "variance": 0.7667348424
          },
          {
            "average": -2.456369703,
            "count": 4379397,
            "maximum": 21.27599907,
            "minimum": -21.12599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60793338,
            "variance": 112.5282505
          },
          {
            "average": 0.4759360707,
            "count": 4379397,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994206486,
            "variance": 0.2494209843
          },
          {
            "average": 415.4860854,
            "count": 4379397,
            "maximum": 631,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 113.348661,
            "variance": 12847.91895
          },
          {
            "average": 249235608.2,
            "count": 4379397,
            "maximum": 249242386.6,
            "minimum": 249233619.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3324.567473,
            "variance": 11052748.88
          },
          {
            "average": 0.4759360707,
            "count": 4379397,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994206486,
            "variance": 0.2494209843
          },
          {
            "average": 0,
            "count": 4379397,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4379397,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4379397,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1776488864,
            "count": 4379397,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3822169448,
            "variance": 0.1460897929
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95012.1,
          2020618.263,
          630.9888139,
          95500.54,
          2021099.083,
          672.6288139
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95012.09999753514,
                2020618.2625103167,
                630.9888139389169
              ],
              [
                95012.09999753514,
                2021099.0825103165,
                630.9888139389169
              ],
              [
                95500.53999753515,
                2021099.0825103165,
                672.628813938917
              ],
              [
                95500.53999753515,
                2020618.2625103167,
                672.628813938917
              ],
              [
                95012.09999753514,
                2020618.2625103167,
                630.9888139389169
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:26+00:00",
        "end_time": "2019-08-07T17:20:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000273.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000273.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000273.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000273.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7339315,
            68.13159628,
            630.9888139,
            -151.7218979,
            68.13609223,
            672.6288139
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73393149979557,
                  68.13174732562291,
                  630.9888139389169
                ],
                [
                  -151.73354028462887,
                  68.13609222673412,
                  630.9888139389169
                ],
                [
                  -151.72189794036157,
                  68.13594114856842,
                  672.628813938917
                ],
                [
                  -151.7222911619763,
                  68.13159627589587,
                  672.628813938917
                ],
                [
                  -151.73393149979557,
                  68.13174732562291,
                  630.9888139389169
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000273.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000273.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:26Z",
            "pc:count": 4379397,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95257.66298,
                "count": 4379397,
                "maximum": 95500.54,
                "minimum": 95012.1,
                "name": "X",
                "position": 0,
                "stddev": 135.2297897,
                "variance": 18287.09603
              },
              {
                "average": 2020853.252,
                "count": 4379397,
                "maximum": 2021099.083,
                "minimum": 2020618.263,
                "name": "Y",
                "position": 1,
                "stddev": 128.2718455,
                "variance": 16453.66634
              },
              {
                "average": 651.9549702,
                "count": 4379397,
                "maximum": 672.6288139,
                "minimum": 630.9888139,
                "name": "Z",
                "position": 2,
                "stddev": 12.54633254,
                "variance": 157.4104603
              },
              {
                "average": 46100.06333,
                "count": 4379397,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12446.10469,
                "variance": 154905521.9
              },
              {
                "average": 1.020488665,
                "count": 4379397,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1430186208,
                "variance": 0.0204543259
              },
              {
                "average": 1.041002677,
                "count": 4379397,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2012170318,
                "variance": 0.04048829389
              },
              {
                "average": 0.4988878606,
                "count": 4379397,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988202,
                "variance": 0.2499988202
              },
              {
                "average": 0.0004512036703,
                "count": 4379397,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02123676502,
                "variance": 0.0004510001885
              },
              {
                "average": 1.486335219,
                "count": 4379397,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.875633966,
                "variance": 0.7667348424
              },
              {
                "average": -2.456369703,
                "count": 4379397,
                "maximum": 21.27599907,
                "minimum": -21.12599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60793338,
                "variance": 112.5282505
              },
              {
                "average": 0.4759360707,
                "count": 4379397,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994206486,
                "variance": 0.2494209843
              },
              {
                "average": 415.4860854,
                "count": 4379397,
                "maximum": 631,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 113.348661,
                "variance": 12847.91895
              },
              {
                "average": 249235608.2,
                "count": 4379397,
                "maximum": 249242386.6,
                "minimum": 249233619.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3324.567473,
                "variance": 11052748.88
              },
              {
                "average": 0.4759360707,
                "count": 4379397,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994206486,
                "variance": 0.2494209843
              },
              {
                "average": 0,
                "count": 4379397,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4379397,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4379397,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1776488864,
                "count": 4379397,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3822169448,
                "variance": 0.1460897929
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95012.1,
              2020618.263,
              630.9888139,
              95500.54,
              2021099.083,
              672.6288139
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95012.09999753514,
                    2020618.2625103167,
                    630.9888139389169
                  ],
                  [
                    95012.09999753514,
                    2021099.0825103165,
                    630.9888139389169
                  ],
                  [
                    95500.53999753515,
                    2021099.0825103165,
                    672.628813938917
                  ],
                  [
                    95500.53999753515,
                    2020618.2625103167,
                    672.628813938917
                  ],
                  [
                    95012.09999753514,
                    2020618.2625103167,
                    630.9888139389169
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:26+00:00",
            "end_time": "2019-08-07T17:20:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000404.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.72447488985293,
              68.15234954132217,
              652.1701160783589
            ],
            [
              -151.72408175372703,
              68.15669438393165,
              652.1701160783589
            ],
            [
              -151.71243040950858,
              68.15654267172968,
              668.350116078359
            ],
            [
              -151.71282555508094,
              68.15219785770778,
              668.350116078359
            ],
            [
              -151.72447488985293,
              68.15234954132217,
              652.1701160783589
            ]
          ]
        ]
      },
      "bbox": [
        -151.7244749,
        68.15219786,
        652.1701161,
        -151.7124304,
        68.15669438,
        668.3501161
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:24Z",
        "pc:count": 4308305,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95576.64306,
            "count": 4308305,
            "maximum": 95818.80731,
            "minimum": 95330.38731,
            "name": "X",
            "position": 0,
            "stddev": 132.8543189,
            "variance": 17650.27004
          },
          {
            "average": 2023147.07,
            "count": 4308305,
            "maximum": 2023389.772,
            "minimum": 2022908.992,
            "name": "Y",
            "position": 1,
            "stddev": 130.9439115,
            "variance": 17146.30796
          },
          {
            "average": 660.0953447,
            "count": 4308305,
            "maximum": 668.3501161,
            "minimum": 652.1701161,
            "name": "Z",
            "position": 2,
            "stddev": 3.587683501,
            "variance": 12.87147291
          },
          {
            "average": 49957.64921,
            "count": 4308305,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7078.365009,
            "variance": 50103251.2
          },
          {
            "average": 1.000248358,
            "count": 4308305,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01575740806,
            "variance": 0.0002482959089
          },
          {
            "average": 1.000497644,
            "count": 4308305,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02230237591,
            "variance": 0.0004973959712
          },
          {
            "average": 0.5043301252,
            "count": 4308305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999813077,
            "variance": 0.249981308
          },
          {
            "average": 0.0005554388559,
            "count": 4308305,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02356120694,
            "variance": 0.0005551304724
          },
          {
            "average": 1.274119636,
            "count": 4308305,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4647101827,
            "variance": 0.2159555539
          },
          {
            "average": 0.338589618,
            "count": 4308305,
            "maximum": 21.46199989,
            "minimum": -21.10199928,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.8781779,
            "variance": 118.3347543
          },
          {
            "average": 0.5128360225,
            "count": 4308305,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998352674,
            "variance": 0.2498352945
          },
          {
            "average": 413.1245251,
            "count": 4308305,
            "maximum": 633,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 113.5624653,
            "variance": 12896.43352
          },
          {
            "average": 249235564.6,
            "count": 4308305,
            "maximum": 249243044.9,
            "minimum": 249233462.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3704.948782,
            "variance": 13726645.48
          },
          {
            "average": 0.5128360225,
            "count": 4308305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998352674,
            "variance": 0.2498352945
          },
          {
            "average": 0,
            "count": 4308305,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4308305,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4308305,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2562371977,
            "count": 4308305,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4365543957,
            "variance": 0.1905797404
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95330.38731,
          2022908.992,
          652.1701161,
          95818.80731,
          2023389.772,
          668.3501161
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95330.3873143987,
                2022908.992217785,
                652.1701160783589
              ],
              [
                95330.3873143987,
                2023389.7722177848,
                652.1701160783589
              ],
              [
                95818.80731439871,
                2023389.7722177848,
                668.350116078359
              ],
              [
                95818.80731439871,
                2022908.992217785,
                668.350116078359
              ],
              [
                95330.3873143987,
                2022908.992217785,
                652.1701160783589
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:24+00:00",
        "end_time": "2019-08-07T17:17:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000404.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000404.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000404.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000404.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7244749,
            68.15219786,
            652.1701161,
            -151.7124304,
            68.15669438,
            668.3501161
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.72447488985293,
                  68.15234954132217,
                  652.1701160783589
                ],
                [
                  -151.72408175372703,
                  68.15669438393165,
                  652.1701160783589
                ],
                [
                  -151.71243040950858,
                  68.15654267172968,
                  668.350116078359
                ],
                [
                  -151.71282555508094,
                  68.15219785770778,
                  668.350116078359
                ],
                [
                  -151.72447488985293,
                  68.15234954132217,
                  652.1701160783589
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000404.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000404.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:24Z",
            "pc:count": 4308305,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95576.64306,
                "count": 4308305,
                "maximum": 95818.80731,
                "minimum": 95330.38731,
                "name": "X",
                "position": 0,
                "stddev": 132.8543189,
                "variance": 17650.27004
              },
              {
                "average": 2023147.07,
                "count": 4308305,
                "maximum": 2023389.772,
                "minimum": 2022908.992,
                "name": "Y",
                "position": 1,
                "stddev": 130.9439115,
                "variance": 17146.30796
              },
              {
                "average": 660.0953447,
                "count": 4308305,
                "maximum": 668.3501161,
                "minimum": 652.1701161,
                "name": "Z",
                "position": 2,
                "stddev": 3.587683501,
                "variance": 12.87147291
              },
              {
                "average": 49957.64921,
                "count": 4308305,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7078.365009,
                "variance": 50103251.2
              },
              {
                "average": 1.000248358,
                "count": 4308305,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01575740806,
                "variance": 0.0002482959089
              },
              {
                "average": 1.000497644,
                "count": 4308305,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02230237591,
                "variance": 0.0004973959712
              },
              {
                "average": 0.5043301252,
                "count": 4308305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999813077,
                "variance": 0.249981308
              },
              {
                "average": 0.0005554388559,
                "count": 4308305,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02356120694,
                "variance": 0.0005551304724
              },
              {
                "average": 1.274119636,
                "count": 4308305,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4647101827,
                "variance": 0.2159555539
              },
              {
                "average": 0.338589618,
                "count": 4308305,
                "maximum": 21.46199989,
                "minimum": -21.10199928,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.8781779,
                "variance": 118.3347543
              },
              {
                "average": 0.5128360225,
                "count": 4308305,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998352674,
                "variance": 0.2498352945
              },
              {
                "average": 413.1245251,
                "count": 4308305,
                "maximum": 633,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 113.5624653,
                "variance": 12896.43352
              },
              {
                "average": 249235564.6,
                "count": 4308305,
                "maximum": 249243044.9,
                "minimum": 249233462.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3704.948782,
                "variance": 13726645.48
              },
              {
                "average": 0.5128360225,
                "count": 4308305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998352674,
                "variance": 0.2498352945
              },
              {
                "average": 0,
                "count": 4308305,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4308305,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4308305,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2562371977,
                "count": 4308305,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4365543957,
                "variance": 0.1905797404
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95330.38731,
              2022908.992,
              652.1701161,
              95818.80731,
              2023389.772,
              668.3501161
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95330.3873143987,
                    2022908.992217785,
                    652.1701160783589
                  ],
                  [
                    95330.3873143987,
                    2023389.7722177848,
                    652.1701160783589
                  ],
                  [
                    95818.80731439871,
                    2023389.7722177848,
                    668.350116078359
                  ],
                  [
                    95818.80731439871,
                    2022908.992217785,
                    668.350116078359
                  ],
                  [
                    95330.3873143987,
                    2022908.992217785,
                    652.1701160783589
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:24+00:00",
            "end_time": "2019-08-07T17:17:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000219.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.75528854505623,
              68.12332089951427,
              621.4275847126537
            ],
            [
              -151.7549011935796,
              68.12766517375907,
              621.4275847126537
            ],
            [
              -151.74326166385663,
              68.12751550767148,
              1393.5275847126536
            ],
            [
              -151.74365102044098,
              68.12317126158341,
              1393.5275847126536
            ],
            [
              -151.75528854505623,
              68.12332089951427,
              621.4275847126537
            ]
          ]
        ]
      },
      "bbox": [
        -151.7552885,
        68.12317126,
        621.4275847,
        -151.7432617,
        68.12766517,
        1393.527585
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:44Z",
        "pc:count": 4869914,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94387.93766,
            "count": 4869914,
            "maximum": 94636.95581,
            "minimum": 94148.47581,
            "name": "X",
            "position": 0,
            "stddev": 133.6888812,
            "variance": 17872.71695
          },
          {
            "average": 2019896.877,
            "count": 4869914,
            "maximum": 2020137.171,
            "minimum": 2019656.411,
            "name": "Y",
            "position": 1,
            "stddev": 126.6734314,
            "variance": 16046.15823
          },
          {
            "average": 626.2061368,
            "count": 4869914,
            "maximum": 1393.527585,
            "minimum": 621.4275847,
            "name": "Z",
            "position": 2,
            "stddev": 3.730136423,
            "variance": 13.91391773
          },
          {
            "average": 42022.42715,
            "count": 4869914,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15166.31981,
            "variance": 230017256.5
          },
          {
            "average": 1.080198541,
            "count": 4869914,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.2740577256,
            "variance": 0.07510763696
          },
          {
            "average": 1.16041926,
            "count": 4869914,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.3724352541,
            "variance": 0.1387080185
          },
          {
            "average": 0.267814791,
            "count": 4869914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4428205833,
            "variance": 0.196090069
          },
          {
            "average": 0.0003328600875,
            "count": 4869914,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0182414188,
            "variance": 0.00033274936
          },
          {
            "average": 1.641792237,
            "count": 4869914,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.04998901,
            "variance": 1.102476921
          },
          {
            "average": -1.426644051,
            "count": 4869914,
            "maximum": 21.19199944,
            "minimum": -21.11400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.32951262,
            "variance": 128.3578562
          },
          {
            "average": 0.4976504719,
            "count": 4869914,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499994531,
            "variance": 0.2499945311
          },
          {
            "average": 418.6434452,
            "count": 4869914,
            "maximum": 631,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.9739909,
            "variance": 12763.12262
          },
          {
            "average": 249235961,
            "count": 4869914,
            "maximum": 249242404,
            "minimum": 249233958.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3163.553372,
            "variance": 10008069.94
          },
          {
            "average": 0.4976504719,
            "count": 4869914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499994531,
            "variance": 0.2499945311
          },
          {
            "average": 0,
            "count": 4869914,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4869914,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4869914,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2607411548,
            "count": 4869914,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4390390012,
            "variance": 0.1927552446
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94148.47581,
          2019656.411,
          621.4275847,
          94636.95581,
          2020137.171,
          1393.527585
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94148.47580738175,
                2019656.4113508023,
                621.4275847126537
              ],
              [
                94148.47580738175,
                2020137.171350802,
                621.4275847126537
              ],
              [
                94636.95580738176,
                2020137.171350802,
                1393.5275847126536
              ],
              [
                94636.95580738176,
                2019656.4113508023,
                1393.5275847126536
              ],
              [
                94148.47580738175,
                2019656.4113508023,
                621.4275847126537
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:44+00:00",
        "end_time": "2019-08-07T17:25:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000219.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000219.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000219.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000219.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7552885,
            68.12317126,
            621.4275847,
            -151.7432617,
            68.12766517,
            1393.527585
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.75528854505623,
                  68.12332089951427,
                  621.4275847126537
                ],
                [
                  -151.7549011935796,
                  68.12766517375907,
                  621.4275847126537
                ],
                [
                  -151.74326166385663,
                  68.12751550767148,
                  1393.5275847126536
                ],
                [
                  -151.74365102044098,
                  68.12317126158341,
                  1393.5275847126536
                ],
                [
                  -151.75528854505623,
                  68.12332089951427,
                  621.4275847126537
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000219.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000219.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:44Z",
            "pc:count": 4869914,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94387.93766,
                "count": 4869914,
                "maximum": 94636.95581,
                "minimum": 94148.47581,
                "name": "X",
                "position": 0,
                "stddev": 133.6888812,
                "variance": 17872.71695
              },
              {
                "average": 2019896.877,
                "count": 4869914,
                "maximum": 2020137.171,
                "minimum": 2019656.411,
                "name": "Y",
                "position": 1,
                "stddev": 126.6734314,
                "variance": 16046.15823
              },
              {
                "average": 626.2061368,
                "count": 4869914,
                "maximum": 1393.527585,
                "minimum": 621.4275847,
                "name": "Z",
                "position": 2,
                "stddev": 3.730136423,
                "variance": 13.91391773
              },
              {
                "average": 42022.42715,
                "count": 4869914,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15166.31981,
                "variance": 230017256.5
              },
              {
                "average": 1.080198541,
                "count": 4869914,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.2740577256,
                "variance": 0.07510763696
              },
              {
                "average": 1.16041926,
                "count": 4869914,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.3724352541,
                "variance": 0.1387080185
              },
              {
                "average": 0.267814791,
                "count": 4869914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4428205833,
                "variance": 0.196090069
              },
              {
                "average": 0.0003328600875,
                "count": 4869914,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0182414188,
                "variance": 0.00033274936
              },
              {
                "average": 1.641792237,
                "count": 4869914,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.04998901,
                "variance": 1.102476921
              },
              {
                "average": -1.426644051,
                "count": 4869914,
                "maximum": 21.19199944,
                "minimum": -21.11400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.32951262,
                "variance": 128.3578562
              },
              {
                "average": 0.4976504719,
                "count": 4869914,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499994531,
                "variance": 0.2499945311
              },
              {
                "average": 418.6434452,
                "count": 4869914,
                "maximum": 631,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.9739909,
                "variance": 12763.12262
              },
              {
                "average": 249235961,
                "count": 4869914,
                "maximum": 249242404,
                "minimum": 249233958.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3163.553372,
                "variance": 10008069.94
              },
              {
                "average": 0.4976504719,
                "count": 4869914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499994531,
                "variance": 0.2499945311
              },
              {
                "average": 0,
                "count": 4869914,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4869914,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4869914,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2607411548,
                "count": 4869914,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4390390012,
                "variance": 0.1927552446
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94148.47581,
              2019656.411,
              621.4275847,
              94636.95581,
              2020137.171,
              1393.527585
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94148.47580738175,
                    2019656.4113508023,
                    621.4275847126537
                  ],
                  [
                    94148.47580738175,
                    2020137.171350802,
                    621.4275847126537
                  ],
                  [
                    94636.95580738176,
                    2020137.171350802,
                    1393.5275847126536
                  ],
                  [
                    94636.95580738176,
                    2019656.4113508023,
                    1393.5275847126536
                  ],
                  [
                    94148.47580738175,
                    2019656.4113508023,
                    621.4275847126537
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:44+00:00",
            "end_time": "2019-08-07T17:25:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000296.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76721567974587,
              68.13549677380155,
              667.037482141372
            ],
            [
              -151.76683021533586,
              68.13984108465694,
              667.037482141372
            ],
            [
              -151.75518736884675,
              68.13969223526047,
              1021.6574821413719
            ],
            [
              -151.75557483985904,
              68.13534795242573,
              1021.6574821413719
            ],
            [
              -151.76721567974587,
              68.13549677380155,
              667.037482141372
            ]
          ]
        ]
      },
      "bbox": [
        -151.7672157,
        68.13534795,
        667.0374821,
        -151.7551874,
        68.13984108,
        1021.657482
      ],
      "properties": {
        "datetime": "2019-08-07T19:58:00Z",
        "pc:count": 4630295,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93847.7065,
            "count": 4630295,
            "maximum": 94091.52576,
            "minimum": 93603.14576,
            "name": "X",
            "position": 0,
            "stddev": 130.8011107,
            "variance": 17108.93057
          },
          {
            "average": 2021222.601,
            "count": 4630295,
            "maximum": 2021466.183,
            "minimum": 2020985.443,
            "name": "Y",
            "position": 1,
            "stddev": 130.1122483,
            "variance": 16929.19716
          },
          {
            "average": 681.21017,
            "count": 4630295,
            "maximum": 1021.657482,
            "minimum": 667.0374821,
            "name": "Z",
            "position": 2,
            "stddev": 7.182778366,
            "variance": 51.59230506
          },
          {
            "average": 52225.5875,
            "count": 4630295,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 5661.364814,
            "variance": 32051051.55
          },
          {
            "average": 1.000017493,
            "count": 4630295,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004182485337,
            "variance": 1.749318359e-05
          },
          {
            "average": 1.000034987,
            "count": 4630295,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00591487575,
            "variance": 3.498575514e-05
          },
          {
            "average": 0.5020515971,
            "count": 4630295,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958449,
            "variance": 0.2499958449
          },
          {
            "average": 0.0004440321837,
            "count": 4630295,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02106739459,
            "variance": 0.000443835115
          },
          {
            "average": 1.28235134,
            "count": 4630295,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4602821093,
            "variance": 0.2118596201
          },
          {
            "average": -2.968447977,
            "count": 4630295,
            "maximum": 21.24600029,
            "minimum": -21.0720005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.40197939,
            "variance": 108.2011753
          },
          {
            "average": 0.4924735897,
            "count": 4630295,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999434039,
            "variance": 0.2499434071
          },
          {
            "average": 413.9465861,
            "count": 4630295,
            "maximum": 633,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 108.7953944,
            "variance": 11836.43783
          },
          {
            "average": 249236122.9,
            "count": 4630295,
            "maximum": 249243080.6,
            "minimum": 249234255.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3232.440907,
            "variance": 10448674.22
          },
          {
            "average": 0.4924735897,
            "count": 4630295,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999434039,
            "variance": 0.2499434071
          },
          {
            "average": 0,
            "count": 4630295,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4630295,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4630295,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1883411316,
            "count": 4630295,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3909843766,
            "variance": 0.1528687828
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93603.14576,
          2020985.443,
          667.0374821,
          94091.52576,
          2021466.183,
          1021.657482
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93603.14576254263,
                2020985.44340873,
                667.037482141372
              ],
              [
                93603.14576254263,
                2021466.1834087302,
                667.037482141372
              ],
              [
                94091.52576254263,
                2021466.1834087302,
                1021.6574821413719
              ],
              [
                94091.52576254263,
                2020985.44340873,
                1021.6574821413719
              ],
              [
                93603.14576254263,
                2020985.44340873,
                667.037482141372
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:58:00+00:00",
        "end_time": "2019-08-07T17:30:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000296.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000296.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000296.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000296.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7672157,
            68.13534795,
            667.0374821,
            -151.7551874,
            68.13984108,
            1021.657482
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76721567974587,
                  68.13549677380155,
                  667.037482141372
                ],
                [
                  -151.76683021533586,
                  68.13984108465694,
                  667.037482141372
                ],
                [
                  -151.75518736884675,
                  68.13969223526047,
                  1021.6574821413719
                ],
                [
                  -151.75557483985904,
                  68.13534795242573,
                  1021.6574821413719
                ],
                [
                  -151.76721567974587,
                  68.13549677380155,
                  667.037482141372
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000296.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000296.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:58:00Z",
            "pc:count": 4630295,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93847.7065,
                "count": 4630295,
                "maximum": 94091.52576,
                "minimum": 93603.14576,
                "name": "X",
                "position": 0,
                "stddev": 130.8011107,
                "variance": 17108.93057
              },
              {
                "average": 2021222.601,
                "count": 4630295,
                "maximum": 2021466.183,
                "minimum": 2020985.443,
                "name": "Y",
                "position": 1,
                "stddev": 130.1122483,
                "variance": 16929.19716
              },
              {
                "average": 681.21017,
                "count": 4630295,
                "maximum": 1021.657482,
                "minimum": 667.0374821,
                "name": "Z",
                "position": 2,
                "stddev": 7.182778366,
                "variance": 51.59230506
              },
              {
                "average": 52225.5875,
                "count": 4630295,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 5661.364814,
                "variance": 32051051.55
              },
              {
                "average": 1.000017493,
                "count": 4630295,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004182485337,
                "variance": 1.749318359e-05
              },
              {
                "average": 1.000034987,
                "count": 4630295,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00591487575,
                "variance": 3.498575514e-05
              },
              {
                "average": 0.5020515971,
                "count": 4630295,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958449,
                "variance": 0.2499958449
              },
              {
                "average": 0.0004440321837,
                "count": 4630295,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02106739459,
                "variance": 0.000443835115
              },
              {
                "average": 1.28235134,
                "count": 4630295,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4602821093,
                "variance": 0.2118596201
              },
              {
                "average": -2.968447977,
                "count": 4630295,
                "maximum": 21.24600029,
                "minimum": -21.0720005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.40197939,
                "variance": 108.2011753
              },
              {
                "average": 0.4924735897,
                "count": 4630295,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999434039,
                "variance": 0.2499434071
              },
              {
                "average": 413.9465861,
                "count": 4630295,
                "maximum": 633,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 108.7953944,
                "variance": 11836.43783
              },
              {
                "average": 249236122.9,
                "count": 4630295,
                "maximum": 249243080.6,
                "minimum": 249234255.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3232.440907,
                "variance": 10448674.22
              },
              {
                "average": 0.4924735897,
                "count": 4630295,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999434039,
                "variance": 0.2499434071
              },
              {
                "average": 0,
                "count": 4630295,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4630295,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4630295,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1883411316,
                "count": 4630295,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3909843766,
                "variance": 0.1528687828
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93603.14576,
              2020985.443,
              667.0374821,
              94091.52576,
              2021466.183,
              1021.657482
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93603.14576254263,
                    2020985.44340873,
                    667.037482141372
                  ],
                  [
                    93603.14576254263,
                    2021466.1834087302,
                    667.037482141372
                  ],
                  [
                    94091.52576254263,
                    2021466.1834087302,
                    1021.6574821413719
                  ],
                  [
                    94091.52576254263,
                    2020985.44340873,
                    1021.6574821413719
                  ],
                  [
                    93603.14576254263,
                    2020985.44340873,
                    667.037482141372
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:58:00+00:00",
            "end_time": "2019-08-07T17:30:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000376.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7461672169019,
              68.14802136411565,
              655.062082511413
            ],
            [
              -151.74577786163476,
              68.15236654841901,
              655.062082511413
            ],
            [
              -151.73412457465247,
              68.15221623129187,
              676.762082511413
            ],
            [
              -151.7345159395902,
              68.1478710753092,
              676.762082511413
            ],
            [
              -151.7461672169019,
              68.14802136411565,
              655.062082511413
            ]
          ]
        ]
      },
      "bbox": [
        -151.7461672,
        68.14787108,
        655.0620825,
        -151.7341246,
        68.15236655,
        676.7620825
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:41Z",
        "pc:count": 4432633,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94683.54865,
            "count": 4432633,
            "maximum": 94926.78551,
            "minimum": 94438.20551,
            "name": "X",
            "position": 0,
            "stddev": 131.8736097,
            "variance": 17390.64893
          },
          {
            "average": 2022640.93,
            "count": 4432633,
            "maximum": 2022880.435,
            "minimum": 2022399.615,
            "name": "Y",
            "position": 1,
            "stddev": 129.0520194,
            "variance": 16654.42371
          },
          {
            "average": 663.1221161,
            "count": 4432633,
            "maximum": 676.7620825,
            "minimum": 655.0620825,
            "name": "Z",
            "position": 2,
            "stddev": 3.604848434,
            "variance": 12.99493223
          },
          {
            "average": 48270.61617,
            "count": 4432633,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12337.67181,
            "variance": 152218145.7
          },
          {
            "average": 1.00868468,
            "count": 4432633,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09287357876,
            "variance": 0.008625501632
          },
          {
            "average": 1.017370263,
            "count": 4432633,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1308329856,
            "variance": 0.01711727011
          },
          {
            "average": 0.4976633527,
            "count": 4432633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999945964,
            "variance": 0.2499945965
          },
          {
            "average": 0.0004457847063,
            "count": 4432633,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02110891003,
            "variance": 0.0004455860828
          },
          {
            "average": 1.477890229,
            "count": 4432633,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7773278644,
            "variance": 0.6042386088
          },
          {
            "average": 4.546623221,
            "count": 4432633,
            "maximum": 21.83399963,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73819153,
            "variance": 115.3087573
          },
          {
            "average": 0.5233796707,
            "count": 4432633,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994531482,
            "variance": 0.2494534473
          },
          {
            "average": 427.8119253,
            "count": 4432633,
            "maximum": 633,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.675843,
            "variance": 14562.65907
          },
          {
            "average": 249236318.3,
            "count": 4432633,
            "maximum": 249243061,
            "minimum": 249233787.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3870.466427,
            "variance": 14980510.36
          },
          {
            "average": 0.5233796707,
            "count": 4432633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994531482,
            "variance": 0.2494534473
          },
          {
            "average": 0,
            "count": 4432633,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4432633,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4432633,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.234057726,
            "count": 4432633,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4234084875,
            "variance": 0.1792747473
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94438.20551,
          2022399.615,
          655.0620825,
          94926.78551,
          2022880.435,
          676.7620825
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94438.2055065228,
                2022399.6154985025,
                655.062082511413
              ],
              [
                94438.2055065228,
                2022880.4354985023,
                655.062082511413
              ],
              [
                94926.78550652279,
                2022880.4354985023,
                676.762082511413
              ],
              [
                94926.78550652279,
                2022399.6154985025,
                676.762082511413
              ],
              [
                94438.2055065228,
                2022399.6154985025,
                655.062082511413
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:41+00:00",
        "end_time": "2019-08-07T17:23:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000376.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000376.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000376.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000376.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7461672,
            68.14787108,
            655.0620825,
            -151.7341246,
            68.15236655,
            676.7620825
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7461672169019,
                  68.14802136411565,
                  655.062082511413
                ],
                [
                  -151.74577786163476,
                  68.15236654841901,
                  655.062082511413
                ],
                [
                  -151.73412457465247,
                  68.15221623129187,
                  676.762082511413
                ],
                [
                  -151.7345159395902,
                  68.1478710753092,
                  676.762082511413
                ],
                [
                  -151.7461672169019,
                  68.14802136411565,
                  655.062082511413
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000376.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000376.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:41Z",
            "pc:count": 4432633,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94683.54865,
                "count": 4432633,
                "maximum": 94926.78551,
                "minimum": 94438.20551,
                "name": "X",
                "position": 0,
                "stddev": 131.8736097,
                "variance": 17390.64893
              },
              {
                "average": 2022640.93,
                "count": 4432633,
                "maximum": 2022880.435,
                "minimum": 2022399.615,
                "name": "Y",
                "position": 1,
                "stddev": 129.0520194,
                "variance": 16654.42371
              },
              {
                "average": 663.1221161,
                "count": 4432633,
                "maximum": 676.7620825,
                "minimum": 655.0620825,
                "name": "Z",
                "position": 2,
                "stddev": 3.604848434,
                "variance": 12.99493223
              },
              {
                "average": 48270.61617,
                "count": 4432633,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12337.67181,
                "variance": 152218145.7
              },
              {
                "average": 1.00868468,
                "count": 4432633,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09287357876,
                "variance": 0.008625501632
              },
              {
                "average": 1.017370263,
                "count": 4432633,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1308329856,
                "variance": 0.01711727011
              },
              {
                "average": 0.4976633527,
                "count": 4432633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999945964,
                "variance": 0.2499945965
              },
              {
                "average": 0.0004457847063,
                "count": 4432633,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02110891003,
                "variance": 0.0004455860828
              },
              {
                "average": 1.477890229,
                "count": 4432633,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7773278644,
                "variance": 0.6042386088
              },
              {
                "average": 4.546623221,
                "count": 4432633,
                "maximum": 21.83399963,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73819153,
                "variance": 115.3087573
              },
              {
                "average": 0.5233796707,
                "count": 4432633,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994531482,
                "variance": 0.2494534473
              },
              {
                "average": 427.8119253,
                "count": 4432633,
                "maximum": 633,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.675843,
                "variance": 14562.65907
              },
              {
                "average": 249236318.3,
                "count": 4432633,
                "maximum": 249243061,
                "minimum": 249233787.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3870.466427,
                "variance": 14980510.36
              },
              {
                "average": 0.5233796707,
                "count": 4432633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994531482,
                "variance": 0.2494534473
              },
              {
                "average": 0,
                "count": 4432633,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4432633,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4432633,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.234057726,
                "count": 4432633,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4234084875,
                "variance": 0.1792747473
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94438.20551,
              2022399.615,
              655.0620825,
              94926.78551,
              2022880.435,
              676.7620825
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94438.2055065228,
                    2022399.6154985025,
                    655.062082511413
                  ],
                  [
                    94438.2055065228,
                    2022880.4354985023,
                    655.062082511413
                  ],
                  [
                    94926.78550652279,
                    2022880.4354985023,
                    676.762082511413
                  ],
                  [
                    94926.78550652279,
                    2022399.6154985025,
                    676.762082511413
                  ],
                  [
                    94438.2055065228,
                    2022399.6154985025,
                    655.062082511413
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:41+00:00",
            "end_time": "2019-08-07T17:23:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000270.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76690258748206,
              68.13139820816838,
              626.1226869005964
            ],
            [
              -151.76651708368206,
              68.13574299617696,
              626.1226869005964
            ],
            [
              -151.75487422723964,
              68.13559410379136,
              696.9226869005963
            ],
            [
              -151.75526173756643,
              68.13124934380882,
              696.9226869005963
            ],
            [
              -151.76690258748206,
              68.13139820816838,
              626.1226869005964
            ]
          ]
        ]
      },
      "bbox": [
        -151.7669026,
        68.13124934,
        626.1226869,
        -151.7548742,
        68.135743,
        696.9226869
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:22Z",
        "pc:count": 4493626,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93867.76525,
            "count": 4493626,
            "maximum": 94119.96572,
            "minimum": 93631.50572,
            "name": "X",
            "position": 0,
            "stddev": 129.9594852,
            "variance": 16889.4678
          },
          {
            "average": 2020774.615,
            "count": 4493626,
            "maximum": 2021013.644,
            "minimum": 2020532.844,
            "name": "Y",
            "position": 1,
            "stddev": 132.2002615,
            "variance": 17476.90915
          },
          {
            "average": 666.0509529,
            "count": 4493626,
            "maximum": 696.9226869,
            "minimum": 626.1226869,
            "name": "Z",
            "position": 2,
            "stddev": 16.17009264,
            "variance": 261.4718959
          },
          {
            "average": 53326.69019,
            "count": 4493626,
            "maximum": 65535,
            "minimum": 5777,
            "name": "Intensity",
            "position": 3,
            "stddev": 3641.679471,
            "variance": 13261829.37
          },
          {
            "average": 1,
            "count": 4493626,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4493626,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5029363814,
            "count": 4493626,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999914332,
            "variance": 0.2499914333
          },
          {
            "average": 0.0004535312908,
            "count": 4493626,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02129144666,
            "variance": 0.000453325701
          },
          {
            "average": 1.28184277,
            "count": 4493626,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4528204033,
            "variance": 0.2050463176
          },
          {
            "average": -3.270026678,
            "count": 4493626,
            "maximum": 21.22800064,
            "minimum": -21.01199913,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.40136967,
            "variance": 108.1884911
          },
          {
            "average": 0.4939658975,
            "count": 4493626,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999636439,
            "variance": 0.2499636452
          },
          {
            "average": 416.5518648,
            "count": 4493626,
            "maximum": 632,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 110.6256051,
            "variance": 12238.02451
          },
          {
            "average": 249236185.9,
            "count": 4493626,
            "maximum": 249242682.7,
            "minimum": 249234263.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3256.386641,
            "variance": 10604053.96
          },
          {
            "average": 0.4939658975,
            "count": 4493626,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999636439,
            "variance": 0.2499636452
          },
          {
            "average": 0,
            "count": 4493626,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4493626,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4493626,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1933318438,
            "count": 4493626,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3949109731,
            "variance": 0.1559546767
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93631.50572,
          2020532.844,
          626.1226869,
          94119.96572,
          2021013.644,
          696.9226869
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93631.50571761934,
                2020532.844488751,
                626.1226869005964
              ],
              [
                93631.50571761934,
                2021013.6444887507,
                626.1226869005964
              ],
              [
                94119.96571761933,
                2021013.6444887507,
                696.9226869005963
              ],
              [
                94119.96571761933,
                2020532.844488751,
                696.9226869005963
              ],
              [
                93631.50571761934,
                2020532.844488751,
                626.1226869005964
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:22+00:00",
        "end_time": "2019-08-07T17:31:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000270.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000270.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000270.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000270.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7669026,
            68.13124934,
            626.1226869,
            -151.7548742,
            68.135743,
            696.9226869
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76690258748206,
                  68.13139820816838,
                  626.1226869005964
                ],
                [
                  -151.76651708368206,
                  68.13574299617696,
                  626.1226869005964
                ],
                [
                  -151.75487422723964,
                  68.13559410379136,
                  696.9226869005963
                ],
                [
                  -151.75526173756643,
                  68.13124934380882,
                  696.9226869005963
                ],
                [
                  -151.76690258748206,
                  68.13139820816838,
                  626.1226869005964
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000270.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000270.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:22Z",
            "pc:count": 4493626,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93867.76525,
                "count": 4493626,
                "maximum": 94119.96572,
                "minimum": 93631.50572,
                "name": "X",
                "position": 0,
                "stddev": 129.9594852,
                "variance": 16889.4678
              },
              {
                "average": 2020774.615,
                "count": 4493626,
                "maximum": 2021013.644,
                "minimum": 2020532.844,
                "name": "Y",
                "position": 1,
                "stddev": 132.2002615,
                "variance": 17476.90915
              },
              {
                "average": 666.0509529,
                "count": 4493626,
                "maximum": 696.9226869,
                "minimum": 626.1226869,
                "name": "Z",
                "position": 2,
                "stddev": 16.17009264,
                "variance": 261.4718959
              },
              {
                "average": 53326.69019,
                "count": 4493626,
                "maximum": 65535,
                "minimum": 5777,
                "name": "Intensity",
                "position": 3,
                "stddev": 3641.679471,
                "variance": 13261829.37
              },
              {
                "average": 1,
                "count": 4493626,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4493626,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5029363814,
                "count": 4493626,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999914332,
                "variance": 0.2499914333
              },
              {
                "average": 0.0004535312908,
                "count": 4493626,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02129144666,
                "variance": 0.000453325701
              },
              {
                "average": 1.28184277,
                "count": 4493626,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4528204033,
                "variance": 0.2050463176
              },
              {
                "average": -3.270026678,
                "count": 4493626,
                "maximum": 21.22800064,
                "minimum": -21.01199913,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.40136967,
                "variance": 108.1884911
              },
              {
                "average": 0.4939658975,
                "count": 4493626,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999636439,
                "variance": 0.2499636452
              },
              {
                "average": 416.5518648,
                "count": 4493626,
                "maximum": 632,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 110.6256051,
                "variance": 12238.02451
              },
              {
                "average": 249236185.9,
                "count": 4493626,
                "maximum": 249242682.7,
                "minimum": 249234263.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3256.386641,
                "variance": 10604053.96
              },
              {
                "average": 0.4939658975,
                "count": 4493626,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999636439,
                "variance": 0.2499636452
              },
              {
                "average": 0,
                "count": 4493626,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4493626,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4493626,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1933318438,
                "count": 4493626,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3949109731,
                "variance": 0.1559546767
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93631.50572,
              2020532.844,
              626.1226869,
              94119.96572,
              2021013.644,
              696.9226869
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93631.50571761934,
                    2020532.844488751,
                    626.1226869005964
                  ],
                  [
                    93631.50571761934,
                    2021013.6444887507,
                    626.1226869005964
                  ],
                  [
                    94119.96571761933,
                    2021013.6444887507,
                    696.9226869005963
                  ],
                  [
                    94119.96571761933,
                    2020532.844488751,
                    696.9226869005963
                  ],
                  [
                    93631.50571761934,
                    2020532.844488751,
                    626.1226869005964
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:22+00:00",
            "end_time": "2019-08-07T17:31:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000245.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7556012071179,
              68.12741789875027,
              622.4721513446789
            ],
            [
              -151.75521378209015,
              68.13176296082652,
              622.4721513446789
            ],
            [
              -151.74357044983736,
              68.13161328866701,
              675.4921513446789
            ],
            [
              -151.74395988128896,
              68.12726825475966,
              675.4921513446789
            ],
            [
              -151.7556012071179,
              68.12741789875027,
              622.4721513446789
            ]
          ]
        ]
      },
      "bbox": [
        -151.7556012,
        68.12726825,
        622.4721513,
        -151.7435704,
        68.13176296,
        675.4921513
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:43Z",
        "pc:count": 4579555,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94363.36357,
            "count": 4579555,
            "maximum": 94608.61593,
            "minimum": 94120.05593,
            "name": "X",
            "position": 0,
            "stddev": 137.6902932,
            "variance": 18958.61684
          },
          {
            "average": 2020354.928,
            "count": 4579555,
            "maximum": 2020589.686,
            "minimum": 2020108.846,
            "name": "Y",
            "position": 1,
            "stddev": 133.2869609,
            "variance": 17765.41394
          },
          {
            "average": 627.1492254,
            "count": 4579555,
            "maximum": 675.4921513,
            "minimum": 622.4721513,
            "name": "Z",
            "position": 2,
            "stddev": 1.778470261,
            "variance": 3.162956469
          },
          {
            "average": 40123.26133,
            "count": 4579555,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13070.75184,
            "variance": 170844553.6
          },
          {
            "average": 1.062779244,
            "count": 4579555,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.2453625582,
            "variance": 0.06020278495
          },
          {
            "average": 1.125453674,
            "count": 4579555,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.3373279457,
            "variance": 0.113790143
          },
          {
            "average": 0.4229609645,
            "count": 4579555,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4940293922,
            "variance": 0.2440650403
          },
          {
            "average": 0.0005391353527,
            "count": 4579555,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0232130309,
            "variance": 0.0005388448034
          },
          {
            "average": 1.635271113,
            "count": 4579555,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.002908586,
            "variance": 1.005825632
          },
          {
            "average": 2.656845451,
            "count": 4579555,
            "maximum": 21.54599953,
            "minimum": -21.11400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.18182756,
            "variance": 125.0332676
          },
          {
            "average": 0.4918340319,
            "count": 4579555,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999333671,
            "variance": 0.2499333715
          },
          {
            "average": 417.9537438,
            "count": 4579555,
            "maximum": 631,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.6894432,
            "variance": 12698.91062
          },
          {
            "average": 249236002.1,
            "count": 4579555,
            "maximum": 249242403.9,
            "minimum": 249233950.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3254.792569,
            "variance": 10593674.67
          },
          {
            "average": 0.4918340319,
            "count": 4579555,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999333671,
            "variance": 0.2499333715
          },
          {
            "average": 0,
            "count": 4579555,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4579555,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4579555,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2917410098,
            "count": 4579555,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4545637888,
            "variance": 0.2066282381
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94120.05593,
          2020108.846,
          622.4721513,
          94608.61593,
          2020589.686,
          675.4921513
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94120.05593352445,
                2020108.8458342971,
                622.4721513446789
              ],
              [
                94120.05593352445,
                2020589.685834297,
                622.4721513446789
              ],
              [
                94608.61593352444,
                2020589.685834297,
                675.4921513446789
              ],
              [
                94608.61593352444,
                2020108.8458342971,
                675.4921513446789
              ],
              [
                94120.05593352445,
                2020108.8458342971,
                622.4721513446789
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:43+00:00",
        "end_time": "2019-08-07T17:25:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000245.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000245.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000245.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000245.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7556012,
            68.12726825,
            622.4721513,
            -151.7435704,
            68.13176296,
            675.4921513
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7556012071179,
                  68.12741789875027,
                  622.4721513446789
                ],
                [
                  -151.75521378209015,
                  68.13176296082652,
                  622.4721513446789
                ],
                [
                  -151.74357044983736,
                  68.13161328866701,
                  675.4921513446789
                ],
                [
                  -151.74395988128896,
                  68.12726825475966,
                  675.4921513446789
                ],
                [
                  -151.7556012071179,
                  68.12741789875027,
                  622.4721513446789
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000245.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000245.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:43Z",
            "pc:count": 4579555,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94363.36357,
                "count": 4579555,
                "maximum": 94608.61593,
                "minimum": 94120.05593,
                "name": "X",
                "position": 0,
                "stddev": 137.6902932,
                "variance": 18958.61684
              },
              {
                "average": 2020354.928,
                "count": 4579555,
                "maximum": 2020589.686,
                "minimum": 2020108.846,
                "name": "Y",
                "position": 1,
                "stddev": 133.2869609,
                "variance": 17765.41394
              },
              {
                "average": 627.1492254,
                "count": 4579555,
                "maximum": 675.4921513,
                "minimum": 622.4721513,
                "name": "Z",
                "position": 2,
                "stddev": 1.778470261,
                "variance": 3.162956469
              },
              {
                "average": 40123.26133,
                "count": 4579555,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13070.75184,
                "variance": 170844553.6
              },
              {
                "average": 1.062779244,
                "count": 4579555,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.2453625582,
                "variance": 0.06020278495
              },
              {
                "average": 1.125453674,
                "count": 4579555,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.3373279457,
                "variance": 0.113790143
              },
              {
                "average": 0.4229609645,
                "count": 4579555,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4940293922,
                "variance": 0.2440650403
              },
              {
                "average": 0.0005391353527,
                "count": 4579555,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0232130309,
                "variance": 0.0005388448034
              },
              {
                "average": 1.635271113,
                "count": 4579555,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.002908586,
                "variance": 1.005825632
              },
              {
                "average": 2.656845451,
                "count": 4579555,
                "maximum": 21.54599953,
                "minimum": -21.11400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.18182756,
                "variance": 125.0332676
              },
              {
                "average": 0.4918340319,
                "count": 4579555,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999333671,
                "variance": 0.2499333715
              },
              {
                "average": 417.9537438,
                "count": 4579555,
                "maximum": 631,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.6894432,
                "variance": 12698.91062
              },
              {
                "average": 249236002.1,
                "count": 4579555,
                "maximum": 249242403.9,
                "minimum": 249233950.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3254.792569,
                "variance": 10593674.67
              },
              {
                "average": 0.4918340319,
                "count": 4579555,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999333671,
                "variance": 0.2499333715
              },
              {
                "average": 0,
                "count": 4579555,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4579555,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4579555,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2917410098,
                "count": 4579555,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4545637888,
                "variance": 0.2066282381
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94120.05593,
              2020108.846,
              622.4721513,
              94608.61593,
              2020589.686,
              675.4921513
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94120.05593352445,
                    2020108.8458342971,
                    622.4721513446789
                  ],
                  [
                    94120.05593352445,
                    2020589.685834297,
                    622.4721513446789
                  ],
                  [
                    94608.61593352444,
                    2020589.685834297,
                    675.4921513446789
                  ],
                  [
                    94608.61593352444,
                    2020108.8458342971,
                    675.4921513446789
                  ],
                  [
                    94120.05593352445,
                    2020108.8458342971,
                    622.4721513446789
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:43+00:00",
            "end_time": "2019-08-07T17:25:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000432.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70277766742439,
              68.15667487763292,
              633.0921209157598
            ],
            [
              -151.7023806994576,
              68.16101992031876,
              633.0921209157598
            ],
            [
              -151.69072462047436,
              68.16086672560623,
              650.7721209157598
            ],
            [
              -151.69112359906524,
              68.15652171179498,
              650.7721209157598
            ],
            [
              -151.70277766742439,
              68.15667487763292,
              633.0921209157598
            ]
          ]
        ]
      },
      "bbox": [
        -151.7027777,
        68.15652171,
        633.0921209,
        -151.6907246,
        68.16101992,
        650.7721209
      ],
      "properties": {
        "datetime": "2019-08-07T20:21:39Z",
        "pc:count": 5070706,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96464.23262,
            "count": 5070706,
            "maximum": 96711.00253,
            "minimum": 96222.46253,
            "name": "X",
            "position": 0,
            "stddev": 127.9628523,
            "variance": 16374.49158
          },
          {
            "average": 2023665.817,
            "count": 5070706,
            "maximum": 2023899.141,
            "minimum": 2023418.341,
            "name": "Y",
            "position": 1,
            "stddev": 132.5438825,
            "variance": 17567.88078
          },
          {
            "average": 638.4309956,
            "count": 5070706,
            "maximum": 650.7721209,
            "minimum": 633.0921209,
            "name": "Z",
            "position": 2,
            "stddev": 2.912318703,
            "variance": 8.481600226
          },
          {
            "average": 48487.86024,
            "count": 5070706,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 9861.142674,
            "variance": 97242134.85
          },
          {
            "average": 1.000014199,
            "count": 5070706,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003768157025,
            "variance": 1.419900737e-05
          },
          {
            "average": 1.000028398,
            "count": 5070706,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005328940936,
            "variance": 2.83976115e-05
          },
          {
            "average": 0.5080294539,
            "count": 5070706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499935573,
            "variance": 0.2499355772
          },
          {
            "average": 0.0003524164091,
            "count": 5070706,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01876945074,
            "variance": 0.0003522922812
          },
          {
            "average": 1.255679584,
            "count": 5070706,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4494272394,
            "variance": 0.2019848435
          },
          {
            "average": -4.935891198,
            "count": 5070706,
            "maximum": 13.98600006,
            "minimum": -20.97599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.705256165,
            "variance": 94.19199724
          },
          {
            "average": 0.4837705045,
            "count": 5070706,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997365833,
            "variance": 0.2497366527
          },
          {
            "average": 440.6978387,
            "count": 5070706,
            "maximum": 638,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 131.2518446,
            "variance": 17227.04672
          },
          {
            "average": 249236361.8,
            "count": 5070706,
            "maximum": 249244499.4,
            "minimum": 249232895.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4700.558752,
            "variance": 22095252.59
          },
          {
            "average": 0.4837705045,
            "count": 5070706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997365833,
            "variance": 0.2497366527
          },
          {
            "average": 0,
            "count": 5070706,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5070706,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5070706,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1457507101,
            "count": 5070706,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3528561536,
            "variance": 0.1245074651
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96222.46253,
          2023418.341,
          633.0921209,
          96711.00253,
          2023899.141,
          650.7721209
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96222.4625304417,
                2023418.3405453414,
                633.0921209157598
              ],
              [
                96222.4625304417,
                2023899.1405453412,
                633.0921209157598
              ],
              [
                96711.0025304417,
                2023899.1405453412,
                650.7721209157598
              ],
              [
                96711.0025304417,
                2023418.3405453414,
                650.7721209157598
              ],
              [
                96222.4625304417,
                2023418.3405453414,
                633.0921209157598
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:21:39+00:00",
        "end_time": "2019-08-07T17:08:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000432.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000432.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000432.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000432.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7027777,
            68.15652171,
            633.0921209,
            -151.6907246,
            68.16101992,
            650.7721209
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70277766742439,
                  68.15667487763292,
                  633.0921209157598
                ],
                [
                  -151.7023806994576,
                  68.16101992031876,
                  633.0921209157598
                ],
                [
                  -151.69072462047436,
                  68.16086672560623,
                  650.7721209157598
                ],
                [
                  -151.69112359906524,
                  68.15652171179498,
                  650.7721209157598
                ],
                [
                  -151.70277766742439,
                  68.15667487763292,
                  633.0921209157598
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000432.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000432.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:21:39Z",
            "pc:count": 5070706,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96464.23262,
                "count": 5070706,
                "maximum": 96711.00253,
                "minimum": 96222.46253,
                "name": "X",
                "position": 0,
                "stddev": 127.9628523,
                "variance": 16374.49158
              },
              {
                "average": 2023665.817,
                "count": 5070706,
                "maximum": 2023899.141,
                "minimum": 2023418.341,
                "name": "Y",
                "position": 1,
                "stddev": 132.5438825,
                "variance": 17567.88078
              },
              {
                "average": 638.4309956,
                "count": 5070706,
                "maximum": 650.7721209,
                "minimum": 633.0921209,
                "name": "Z",
                "position": 2,
                "stddev": 2.912318703,
                "variance": 8.481600226
              },
              {
                "average": 48487.86024,
                "count": 5070706,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 9861.142674,
                "variance": 97242134.85
              },
              {
                "average": 1.000014199,
                "count": 5070706,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003768157025,
                "variance": 1.419900737e-05
              },
              {
                "average": 1.000028398,
                "count": 5070706,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005328940936,
                "variance": 2.83976115e-05
              },
              {
                "average": 0.5080294539,
                "count": 5070706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499935573,
                "variance": 0.2499355772
              },
              {
                "average": 0.0003524164091,
                "count": 5070706,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01876945074,
                "variance": 0.0003522922812
              },
              {
                "average": 1.255679584,
                "count": 5070706,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4494272394,
                "variance": 0.2019848435
              },
              {
                "average": -4.935891198,
                "count": 5070706,
                "maximum": 13.98600006,
                "minimum": -20.97599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.705256165,
                "variance": 94.19199724
              },
              {
                "average": 0.4837705045,
                "count": 5070706,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997365833,
                "variance": 0.2497366527
              },
              {
                "average": 440.6978387,
                "count": 5070706,
                "maximum": 638,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 131.2518446,
                "variance": 17227.04672
              },
              {
                "average": 249236361.8,
                "count": 5070706,
                "maximum": 249244499.4,
                "minimum": 249232895.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4700.558752,
                "variance": 22095252.59
              },
              {
                "average": 0.4837705045,
                "count": 5070706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997365833,
                "variance": 0.2497366527
              },
              {
                "average": 0,
                "count": 5070706,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5070706,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5070706,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1457507101,
                "count": 5070706,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3528561536,
                "variance": 0.1245074651
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96222.46253,
              2023418.341,
              633.0921209,
              96711.00253,
              2023899.141,
              650.7721209
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96222.4625304417,
                    2023418.3405453414,
                    633.0921209157598
                  ],
                  [
                    96222.4625304417,
                    2023899.1405453412,
                    633.0921209157598
                  ],
                  [
                    96711.0025304417,
                    2023899.1405453412,
                    650.7721209157598
                  ],
                  [
                    96711.0025304417,
                    2023418.3405453414,
                    650.7721209157598
                  ],
                  [
                    96222.4625304417,
                    2023418.3405453414,
                    633.0921209157598
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:21:39+00:00",
            "end_time": "2019-08-07T17:08:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000327.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71255977442087,
              68.14017083376788,
              665.3066785855524
            ],
            [
              -151.71216475535076,
              68.14451563854148,
              665.3066785855524
            ],
            [
              -151.70051530592966,
              68.1443630911388,
              713.3466785855524
            ],
            [
              -151.7009123331937,
              68.14001831509215,
              713.3466785855524
            ],
            [
              -151.71255977442087,
              68.14017083376788,
              665.3066785855524
            ]
          ]
        ]
      },
      "bbox": [
        -151.7125598,
        68.14001832,
        665.3066786,
        -151.7005153,
        68.14451564,
        713.3466786
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:07Z",
        "pc:count": 4436385,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96127.75243,
            "count": 4436385,
            "maximum": 96364.32244,
            "minimum": 95875.74244,
            "name": "X",
            "position": 0,
            "stddev": 132.9013643,
            "variance": 17662.77264
          },
          {
            "average": 2021817.233,
            "count": 4436385,
            "maximum": 2022060.851,
            "minimum": 2021580.051,
            "name": "Y",
            "position": 1,
            "stddev": 131.5381072,
            "variance": 17302.27365
          },
          {
            "average": 686.1589704,
            "count": 4436385,
            "maximum": 713.3466786,
            "minimum": 665.3066786,
            "name": "Z",
            "position": 2,
            "stddev": 10.85519754,
            "variance": 117.8353136
          },
          {
            "average": 51766.97339,
            "count": 4436385,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 6990.93689,
            "variance": 48873198.6
          },
          {
            "average": 1.000027725,
            "count": 4436385,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005265407285,
            "variance": 2.772451388e-05
          },
          {
            "average": 1.000055225,
            "count": 4436385,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007431157819,
            "variance": 5.522210653e-05
          },
          {
            "average": 0.5051876697,
            "count": 4436385,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999731437,
            "variance": 0.2499731444
          },
          {
            "average": 0.0005409810014,
            "count": 4436385,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02325270872,
            "variance": 0.0005406884629
          },
          {
            "average": 1.274392101,
            "count": 4436385,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4749620079,
            "variance": 0.2255889089
          },
          {
            "average": -0.2180238539,
            "count": 4436385,
            "maximum": 21.59399986,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.17100354,
            "variance": 124.7913201
          },
          {
            "average": 0.5080546436,
            "count": 4436385,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999351749,
            "variance": 0.2499351791
          },
          {
            "average": 415.0536766,
            "count": 4436385,
            "maximum": 631,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 115.7209493,
            "variance": 13391.33812
          },
          {
            "average": 249235312.2,
            "count": 4436385,
            "maximum": 249242367.8,
            "minimum": 249233106,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3571.860844,
            "variance": 12758189.89
          },
          {
            "average": 0.5080546436,
            "count": 4436385,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999351749,
            "variance": 0.2499351791
          },
          {
            "average": 0,
            "count": 4436385,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4436385,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4436385,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2646472297,
            "count": 4436385,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4411452339,
            "variance": 0.1946091174
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95875.74244,
          2021580.051,
          665.3066786,
          96364.32244,
          2022060.851,
          713.3466786
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95875.7424354946,
                2021580.0514037288,
                665.3066785855524
              ],
              [
                95875.7424354946,
                2022060.8514037286,
                665.3066785855524
              ],
              [
                96364.32243549459,
                2022060.8514037286,
                713.3466785855524
              ],
              [
                96364.32243549459,
                2021580.0514037288,
                713.3466785855524
              ],
              [
                95875.7424354946,
                2021580.0514037288,
                665.3066785855524
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:07+00:00",
        "end_time": "2019-08-07T17:11:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000327.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000327.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000327.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000327.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7125598,
            68.14001832,
            665.3066786,
            -151.7005153,
            68.14451564,
            713.3466786
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71255977442087,
                  68.14017083376788,
                  665.3066785855524
                ],
                [
                  -151.71216475535076,
                  68.14451563854148,
                  665.3066785855524
                ],
                [
                  -151.70051530592966,
                  68.1443630911388,
                  713.3466785855524
                ],
                [
                  -151.7009123331937,
                  68.14001831509215,
                  713.3466785855524
                ],
                [
                  -151.71255977442087,
                  68.14017083376788,
                  665.3066785855524
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000327.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000327.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:07Z",
            "pc:count": 4436385,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96127.75243,
                "count": 4436385,
                "maximum": 96364.32244,
                "minimum": 95875.74244,
                "name": "X",
                "position": 0,
                "stddev": 132.9013643,
                "variance": 17662.77264
              },
              {
                "average": 2021817.233,
                "count": 4436385,
                "maximum": 2022060.851,
                "minimum": 2021580.051,
                "name": "Y",
                "position": 1,
                "stddev": 131.5381072,
                "variance": 17302.27365
              },
              {
                "average": 686.1589704,
                "count": 4436385,
                "maximum": 713.3466786,
                "minimum": 665.3066786,
                "name": "Z",
                "position": 2,
                "stddev": 10.85519754,
                "variance": 117.8353136
              },
              {
                "average": 51766.97339,
                "count": 4436385,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 6990.93689,
                "variance": 48873198.6
              },
              {
                "average": 1.000027725,
                "count": 4436385,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005265407285,
                "variance": 2.772451388e-05
              },
              {
                "average": 1.000055225,
                "count": 4436385,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007431157819,
                "variance": 5.522210653e-05
              },
              {
                "average": 0.5051876697,
                "count": 4436385,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999731437,
                "variance": 0.2499731444
              },
              {
                "average": 0.0005409810014,
                "count": 4436385,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02325270872,
                "variance": 0.0005406884629
              },
              {
                "average": 1.274392101,
                "count": 4436385,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4749620079,
                "variance": 0.2255889089
              },
              {
                "average": -0.2180238539,
                "count": 4436385,
                "maximum": 21.59399986,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.17100354,
                "variance": 124.7913201
              },
              {
                "average": 0.5080546436,
                "count": 4436385,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999351749,
                "variance": 0.2499351791
              },
              {
                "average": 415.0536766,
                "count": 4436385,
                "maximum": 631,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 115.7209493,
                "variance": 13391.33812
              },
              {
                "average": 249235312.2,
                "count": 4436385,
                "maximum": 249242367.8,
                "minimum": 249233106,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3571.860844,
                "variance": 12758189.89
              },
              {
                "average": 0.5080546436,
                "count": 4436385,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999351749,
                "variance": 0.2499351791
              },
              {
                "average": 0,
                "count": 4436385,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4436385,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4436385,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2646472297,
                "count": 4436385,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4411452339,
                "variance": 0.1946091174
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95875.74244,
              2021580.051,
              665.3066786,
              96364.32244,
              2022060.851,
              713.3466786
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95875.7424354946,
                    2021580.0514037288,
                    665.3066785855524
                  ],
                  [
                    95875.7424354946,
                    2022060.8514037286,
                    665.3066785855524
                  ],
                  [
                    96364.32243549459,
                    2022060.8514037286,
                    713.3466785855524
                  ],
                  [
                    96364.32243549459,
                    2021580.0514037288,
                    713.3466785855524
                  ],
                  [
                    95875.7424354946,
                    2021580.0514037288,
                    665.3066785855524
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:07+00:00",
            "end_time": "2019-08-07T17:11:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000301.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71225305078028,
              68.13607331438078,
              674.0999012557794
            ],
            [
              -151.71185805950418,
              68.14041787332008,
              674.0999012557794
            ],
            [
              -151.70021289218354,
              68.14026533915927,
              1218.1399012557795
            ],
            [
              -151.7006098905043,
              68.1359208089368,
              1218.1399012557795
            ],
            [
              -151.71225305078028,
              68.13607331438078,
              674.0999012557794
            ]
          ]
        ]
      },
      "bbox": [
        -151.7122531,
        68.13592081,
        674.0999013,
        -151.7002129,
        68.14041787,
        1218.139901
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:20Z",
        "pc:count": 4760576,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96152.83179,
            "count": 4760576,
            "maximum": 96392.68131,
            "minimum": 95904.20131,
            "name": "X",
            "position": 0,
            "stddev": 132.7445138,
            "variance": 17621.10593
          },
          {
            "average": 2021369.06,
            "count": 4760576,
            "maximum": 2021608.37,
            "minimum": 2021127.59,
            "name": "Y",
            "position": 1,
            "stddev": 130.4182613,
            "variance": 17008.92288
          },
          {
            "average": 696.277738,
            "count": 4760576,
            "maximum": 1218.139901,
            "minimum": 674.0999013,
            "name": "Z",
            "position": 2,
            "stddev": 11.32336138,
            "variance": 128.2185129
          },
          {
            "average": 51113.19304,
            "count": 4760576,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 7436.794618,
            "variance": 55305914.19
          },
          {
            "average": 1.000043902,
            "count": 4760576,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006625732586,
            "variance": 4.39003323e-05
          },
          {
            "average": 1.000088015,
            "count": 4760576,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009381195633,
            "variance": 8.800683151e-05
          },
          {
            "average": 0.5083977233,
            "count": 4760576,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999295258,
            "variance": 0.2499295307
          },
          {
            "average": 0.0005089720236,
            "count": 4760576,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02255466865,
            "variance": 0.0005087130779
          },
          {
            "average": 1.259333114,
            "count": 4760576,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4759061658,
            "variance": 0.2264866787
          },
          {
            "average": -1.432997798,
            "count": 4760576,
            "maximum": 21.79800034,
            "minimum": -21.31200027,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.39760008,
            "variance": 129.9052875
          },
          {
            "average": 0.5104684811,
            "count": 4760576,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998904514,
            "variance": 0.2498904634
          },
          {
            "average": 419.5322301,
            "count": 4760576,
            "maximum": 630,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.4389663,
            "variance": 14027.78875
          },
          {
            "average": 249235424.1,
            "count": 4760576,
            "maximum": 249242020.7,
            "minimum": 249233097.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3607.383311,
            "variance": 13013214.35
          },
          {
            "average": 0.5104684811,
            "count": 4760576,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998904514,
            "variance": 0.2498904634
          },
          {
            "average": 0,
            "count": 4760576,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4760576,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4760576,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2514281885,
            "count": 4760576,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4338341781,
            "variance": 0.1882120941
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95904.20131,
          2021127.59,
          674.0999013,
          96392.68131,
          2021608.37,
          1218.139901
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95904.20131022434,
                2021127.589993769,
                674.0999012557794
              ],
              [
                95904.20131022434,
                2021608.3699937689,
                674.0999012557794
              ],
              [
                96392.68131022435,
                2021608.3699937689,
                1218.1399012557795
              ],
              [
                96392.68131022435,
                2021127.589993769,
                1218.1399012557795
              ],
              [
                95904.20131022434,
                2021127.589993769,
                674.0999012557794
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:20+00:00",
        "end_time": "2019-08-07T17:11:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000301.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000301.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000301.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000301.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7122531,
            68.13592081,
            674.0999013,
            -151.7002129,
            68.14041787,
            1218.139901
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71225305078028,
                  68.13607331438078,
                  674.0999012557794
                ],
                [
                  -151.71185805950418,
                  68.14041787332008,
                  674.0999012557794
                ],
                [
                  -151.70021289218354,
                  68.14026533915927,
                  1218.1399012557795
                ],
                [
                  -151.7006098905043,
                  68.1359208089368,
                  1218.1399012557795
                ],
                [
                  -151.71225305078028,
                  68.13607331438078,
                  674.0999012557794
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000301.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000301.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:20Z",
            "pc:count": 4760576,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96152.83179,
                "count": 4760576,
                "maximum": 96392.68131,
                "minimum": 95904.20131,
                "name": "X",
                "position": 0,
                "stddev": 132.7445138,
                "variance": 17621.10593
              },
              {
                "average": 2021369.06,
                "count": 4760576,
                "maximum": 2021608.37,
                "minimum": 2021127.59,
                "name": "Y",
                "position": 1,
                "stddev": 130.4182613,
                "variance": 17008.92288
              },
              {
                "average": 696.277738,
                "count": 4760576,
                "maximum": 1218.139901,
                "minimum": 674.0999013,
                "name": "Z",
                "position": 2,
                "stddev": 11.32336138,
                "variance": 128.2185129
              },
              {
                "average": 51113.19304,
                "count": 4760576,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 7436.794618,
                "variance": 55305914.19
              },
              {
                "average": 1.000043902,
                "count": 4760576,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006625732586,
                "variance": 4.39003323e-05
              },
              {
                "average": 1.000088015,
                "count": 4760576,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009381195633,
                "variance": 8.800683151e-05
              },
              {
                "average": 0.5083977233,
                "count": 4760576,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999295258,
                "variance": 0.2499295307
              },
              {
                "average": 0.0005089720236,
                "count": 4760576,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02255466865,
                "variance": 0.0005087130779
              },
              {
                "average": 1.259333114,
                "count": 4760576,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4759061658,
                "variance": 0.2264866787
              },
              {
                "average": -1.432997798,
                "count": 4760576,
                "maximum": 21.79800034,
                "minimum": -21.31200027,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.39760008,
                "variance": 129.9052875
              },
              {
                "average": 0.5104684811,
                "count": 4760576,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998904514,
                "variance": 0.2498904634
              },
              {
                "average": 419.5322301,
                "count": 4760576,
                "maximum": 630,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.4389663,
                "variance": 14027.78875
              },
              {
                "average": 249235424.1,
                "count": 4760576,
                "maximum": 249242020.7,
                "minimum": 249233097.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3607.383311,
                "variance": 13013214.35
              },
              {
                "average": 0.5104684811,
                "count": 4760576,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998904514,
                "variance": 0.2498904634
              },
              {
                "average": 0,
                "count": 4760576,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4760576,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4760576,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2514281885,
                "count": 4760576,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4338341781,
                "variance": 0.1882120941
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95904.20131,
              2021127.59,
              674.0999013,
              96392.68131,
              2021608.37,
              1218.139901
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95904.20131022434,
                    2021127.589993769,
                    674.0999012557794
                  ],
                  [
                    95904.20131022434,
                    2021608.3699937689,
                    674.0999012557794
                  ],
                  [
                    96392.68131022435,
                    2021608.3699937689,
                    1218.1399012557795
                  ],
                  [
                    96392.68131022435,
                    2021127.589993769,
                    1218.1399012557795
                  ],
                  [
                    95904.20131022434,
                    2021127.589993769,
                    674.0999012557794
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:20+00:00",
            "end_time": "2019-08-07T17:11:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000299.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73423964383153,
              68.13584477788497,
              633.1183973700191
            ],
            [
              -151.73384849955264,
              68.14018884037377,
              633.1183973700191
            ],
            [
              -151.72220330523544,
              68.14003776798903,
              669.458397370019
            ],
            [
              -151.72259645636362,
              68.13569373393828,
              669.458397370019
            ],
            [
              -151.73423964383153,
              68.13584477788497,
              633.1183973700191
            ]
          ]
        ]
      },
      "bbox": [
        -151.7342396,
        68.13569373,
        633.1183974,
        -151.7222033,
        68.14018884,
        669.4583974
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:25Z",
        "pc:count": 3981207,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95227.93597,
            "count": 3981207,
            "maximum": 95472.2071,
            "minimum": 94983.7271,
            "name": "X",
            "position": 0,
            "stddev": 132.4812545,
            "variance": 17551.2828
          },
          {
            "average": 2021319.004,
            "count": 3981207,
            "maximum": 2021551.451,
            "minimum": 2021070.731,
            "name": "Y",
            "position": 1,
            "stddev": 128.140783,
            "variance": 16420.06027
          },
          {
            "average": 645.1631941,
            "count": 3981207,
            "maximum": 669.4583974,
            "minimum": 633.1183974,
            "name": "Z",
            "position": 2,
            "stddev": 7.482080067,
            "variance": 55.98152213
          },
          {
            "average": 40958.56245,
            "count": 3981207,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12822.70445,
            "variance": 164421749.5
          },
          {
            "average": 1.028852557,
            "count": 3981207,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1686507662,
            "variance": 0.02844308095
          },
          {
            "average": 1.057718677,
            "count": 3981207,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2359167424,
            "variance": 0.05565670937
          },
          {
            "average": 0.4883782732,
            "count": 3981207,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.49986498,
            "variance": 0.2498649982
          },
          {
            "average": 0.000479251644,
            "count": 3981207,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0218865731,
            "variance": 0.0004790220822
          },
          {
            "average": 1.632829441,
            "count": 3981207,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.116096978,
            "variance": 1.245672464
          },
          {
            "average": 2.219923008,
            "count": 3981207,
            "maximum": 21.5340004,
            "minimum": -20.79599953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.25414213,
            "variance": 126.655715
          },
          {
            "average": 0.4789231005,
            "count": 3981207,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995556295,
            "variance": 0.249555827
          },
          {
            "average": 423.9932824,
            "count": 3981207,
            "maximum": 631,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.9633711,
            "variance": 14152.28367
          },
          {
            "average": 249235924,
            "count": 3981207,
            "maximum": 249242385.4,
            "minimum": 249233611.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3610.6895,
            "variance": 13037078.67
          },
          {
            "average": 0.4789231005,
            "count": 3981207,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995556295,
            "variance": 0.249555827
          },
          {
            "average": 0,
            "count": 3981207,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3981207,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3981207,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1996399584,
            "count": 3981207,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3997297657,
            "variance": 0.1597838856
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94983.7271,
          2021070.731,
          633.1183974,
          95472.2071,
          2021551.451,
          669.4583974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94983.72710180642,
                2021070.7307417926,
                633.1183973700191
              ],
              [
                94983.72710180642,
                2021551.4507417928,
                633.1183973700191
              ],
              [
                95472.20710180643,
                2021551.4507417928,
                669.458397370019
              ],
              [
                95472.20710180643,
                2021070.7307417926,
                669.458397370019
              ],
              [
                94983.72710180642,
                2021070.7307417926,
                633.1183973700191
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:25+00:00",
        "end_time": "2019-08-07T17:20:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000299.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000299.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000299.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000299.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7342396,
            68.13569373,
            633.1183974,
            -151.7222033,
            68.14018884,
            669.4583974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73423964383153,
                  68.13584477788497,
                  633.1183973700191
                ],
                [
                  -151.73384849955264,
                  68.14018884037377,
                  633.1183973700191
                ],
                [
                  -151.72220330523544,
                  68.14003776798903,
                  669.458397370019
                ],
                [
                  -151.72259645636362,
                  68.13569373393828,
                  669.458397370019
                ],
                [
                  -151.73423964383153,
                  68.13584477788497,
                  633.1183973700191
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000299.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000299.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:25Z",
            "pc:count": 3981207,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95227.93597,
                "count": 3981207,
                "maximum": 95472.2071,
                "minimum": 94983.7271,
                "name": "X",
                "position": 0,
                "stddev": 132.4812545,
                "variance": 17551.2828
              },
              {
                "average": 2021319.004,
                "count": 3981207,
                "maximum": 2021551.451,
                "minimum": 2021070.731,
                "name": "Y",
                "position": 1,
                "stddev": 128.140783,
                "variance": 16420.06027
              },
              {
                "average": 645.1631941,
                "count": 3981207,
                "maximum": 669.4583974,
                "minimum": 633.1183974,
                "name": "Z",
                "position": 2,
                "stddev": 7.482080067,
                "variance": 55.98152213
              },
              {
                "average": 40958.56245,
                "count": 3981207,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12822.70445,
                "variance": 164421749.5
              },
              {
                "average": 1.028852557,
                "count": 3981207,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1686507662,
                "variance": 0.02844308095
              },
              {
                "average": 1.057718677,
                "count": 3981207,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2359167424,
                "variance": 0.05565670937
              },
              {
                "average": 0.4883782732,
                "count": 3981207,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.49986498,
                "variance": 0.2498649982
              },
              {
                "average": 0.000479251644,
                "count": 3981207,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0218865731,
                "variance": 0.0004790220822
              },
              {
                "average": 1.632829441,
                "count": 3981207,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.116096978,
                "variance": 1.245672464
              },
              {
                "average": 2.219923008,
                "count": 3981207,
                "maximum": 21.5340004,
                "minimum": -20.79599953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.25414213,
                "variance": 126.655715
              },
              {
                "average": 0.4789231005,
                "count": 3981207,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995556295,
                "variance": 0.249555827
              },
              {
                "average": 423.9932824,
                "count": 3981207,
                "maximum": 631,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.9633711,
                "variance": 14152.28367
              },
              {
                "average": 249235924,
                "count": 3981207,
                "maximum": 249242385.4,
                "minimum": 249233611.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3610.6895,
                "variance": 13037078.67
              },
              {
                "average": 0.4789231005,
                "count": 3981207,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995556295,
                "variance": 0.249555827
              },
              {
                "average": 0,
                "count": 3981207,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3981207,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3981207,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1996399584,
                "count": 3981207,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3997297657,
                "variance": 0.1597838856
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94983.7271,
              2021070.731,
              633.1183974,
              95472.2071,
              2021551.451,
              669.4583974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94983.72710180642,
                    2021070.7307417926,
                    633.1183973700191
                  ],
                  [
                    94983.72710180642,
                    2021551.4507417928,
                    633.1183973700191
                  ],
                  [
                    95472.20710180643,
                    2021551.4507417928,
                    669.458397370019
                  ],
                  [
                    95472.20710180643,
                    2021070.7307417926,
                    669.458397370019
                  ],
                  [
                    94983.72710180642,
                    2021070.7307417926,
                    633.1183973700191
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:25+00:00",
            "end_time": "2019-08-07T17:20:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000399.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.779478549446,
              68.15176826207991,
              704.2538560965784
            ],
            [
              -151.77909488950274,
              68.15611357890046,
              704.2538560965784
            ],
            [
              -151.76744110015952,
              68.1559654930279,
              979.7538560965784
            ],
            [
              -151.76782677026173,
              68.15162020411387,
              979.7538560965784
            ],
            [
              -151.779478549446,
              68.15176826207991,
              704.2538560965784
            ]
          ]
        ]
      },
      "bbox": [
        -151.7794785,
        68.1516202,
        704.2538561,
        -151.7674411,
        68.15611358,
        979.7538561
      ],
      "properties": {
        "datetime": "2019-08-18T19:03:13Z",
        "pc:count": 6346336,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93269.91621,
            "count": 6346336,
            "maximum": 93517.6136,
            "minimum": 93029.0936,
            "name": "X",
            "position": 0,
            "stddev": 132.9746654,
            "variance": 17682.26164
          },
          {
            "average": 2023013.932,
            "count": 6346336,
            "maximum": 2023247.562,
            "minimum": 2022766.742,
            "name": "Y",
            "position": 1,
            "stddev": 130.9262187,
            "variance": 17141.67475
          },
          {
            "average": 790.0232676,
            "count": 6346336,
            "maximum": 979.7538561,
            "minimum": 704.2538561,
            "name": "Z",
            "position": 2,
            "stddev": 57.47290907,
            "variance": 3303.135276
          },
          {
            "average": 45604.39612,
            "count": 6346336,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10295.81947,
            "variance": 106003898.5
          },
          {
            "average": 1.000575923,
            "count": 6346336,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02424627446,
            "variance": 0.000587881825
          },
          {
            "average": 1.001152634,
            "count": 6346336,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03446994161,
            "variance": 0.001188176875
          },
          {
            "average": 0.5003521717,
            "count": 6346336,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999154,
            "variance": 0.2499999154
          },
          {
            "average": 0.0004683017098,
            "count": 6346336,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02163521382,
            "variance": 0.0004680824771
          },
          {
            "average": 1.217588385,
            "count": 6346336,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5641153469,
            "variance": 0.3182261247
          },
          {
            "average": -0.003388739639,
            "count": 6346336,
            "maximum": 21.65399933,
            "minimum": -20.99399948,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.18706873,
            "variance": 125.1505068
          },
          {
            "average": 0.490690849,
            "count": 6346336,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999133716,
            "variance": 0.2499133791
          },
          {
            "average": 455.8445897,
            "count": 6346336,
            "maximum": 723,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 138.9658352,
            "variance": 19311.50335
          },
          {
            "average": 249308252.3,
            "count": 6346336,
            "maximum": 250190193.5,
            "minimum": 249234439.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 250432.2935,
            "variance": 62716333630.0
          },
          {
            "average": 0.490690849,
            "count": 6346336,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999133716,
            "variance": 0.2499133791
          },
          {
            "average": 0,
            "count": 6346336,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6346336,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6346336,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2224863291,
            "count": 6346336,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.415916085,
            "variance": 0.1729861897
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93029.0936,
          2022766.742,
          704.2538561,
          93517.6136,
          2023247.562,
          979.7538561
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93029.09359582713,
                2022766.7420412556,
                704.2538560965784
              ],
              [
                93029.09359582713,
                2023247.5620412554,
                704.2538560965784
              ],
              [
                93517.61359582712,
                2023247.5620412554,
                979.7538560965784
              ],
              [
                93517.61359582712,
                2022766.7420412556,
                979.7538560965784
              ],
              [
                93029.09359582713,
                2022766.7420412556,
                704.2538560965784
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-18T19:03:13+00:00",
        "end_time": "2019-08-07T17:33:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000399.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000399.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000399.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000399.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7794785,
            68.1516202,
            704.2538561,
            -151.7674411,
            68.15611358,
            979.7538561
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.779478549446,
                  68.15176826207991,
                  704.2538560965784
                ],
                [
                  -151.77909488950274,
                  68.15611357890046,
                  704.2538560965784
                ],
                [
                  -151.76744110015952,
                  68.1559654930279,
                  979.7538560965784
                ],
                [
                  -151.76782677026173,
                  68.15162020411387,
                  979.7538560965784
                ],
                [
                  -151.779478549446,
                  68.15176826207991,
                  704.2538560965784
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000399.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000399.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-18T19:03:13Z",
            "pc:count": 6346336,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93269.91621,
                "count": 6346336,
                "maximum": 93517.6136,
                "minimum": 93029.0936,
                "name": "X",
                "position": 0,
                "stddev": 132.9746654,
                "variance": 17682.26164
              },
              {
                "average": 2023013.932,
                "count": 6346336,
                "maximum": 2023247.562,
                "minimum": 2022766.742,
                "name": "Y",
                "position": 1,
                "stddev": 130.9262187,
                "variance": 17141.67475
              },
              {
                "average": 790.0232676,
                "count": 6346336,
                "maximum": 979.7538561,
                "minimum": 704.2538561,
                "name": "Z",
                "position": 2,
                "stddev": 57.47290907,
                "variance": 3303.135276
              },
              {
                "average": 45604.39612,
                "count": 6346336,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10295.81947,
                "variance": 106003898.5
              },
              {
                "average": 1.000575923,
                "count": 6346336,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02424627446,
                "variance": 0.000587881825
              },
              {
                "average": 1.001152634,
                "count": 6346336,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03446994161,
                "variance": 0.001188176875
              },
              {
                "average": 0.5003521717,
                "count": 6346336,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999154,
                "variance": 0.2499999154
              },
              {
                "average": 0.0004683017098,
                "count": 6346336,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02163521382,
                "variance": 0.0004680824771
              },
              {
                "average": 1.217588385,
                "count": 6346336,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5641153469,
                "variance": 0.3182261247
              },
              {
                "average": -0.003388739639,
                "count": 6346336,
                "maximum": 21.65399933,
                "minimum": -20.99399948,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.18706873,
                "variance": 125.1505068
              },
              {
                "average": 0.490690849,
                "count": 6346336,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999133716,
                "variance": 0.2499133791
              },
              {
                "average": 455.8445897,
                "count": 6346336,
                "maximum": 723,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 138.9658352,
                "variance": 19311.50335
              },
              {
                "average": 249308252.3,
                "count": 6346336,
                "maximum": 250190193.5,
                "minimum": 249234439.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 250432.2935,
                "variance": 62716333630.0
              },
              {
                "average": 0.490690849,
                "count": 6346336,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999133716,
                "variance": 0.2499133791
              },
              {
                "average": 0,
                "count": 6346336,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6346336,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6346336,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2224863291,
                "count": 6346336,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.415916085,
                "variance": 0.1729861897
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93029.0936,
              2022766.742,
              704.2538561,
              93517.6136,
              2023247.562,
              979.7538561
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93029.09359582713,
                    2022766.7420412556,
                    704.2538560965784
                  ],
                  [
                    93029.09359582713,
                    2023247.5620412554,
                    704.2538560965784
                  ],
                  [
                    93517.61359582712,
                    2023247.5620412554,
                    979.7538560965784
                  ],
                  [
                    93517.61359582712,
                    2022766.7420412556,
                    979.7538560965784
                  ],
                  [
                    93029.09359582713,
                    2022766.7420412556,
                    704.2538560965784
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-18T19:03:13+00:00",
            "end_time": "2019-08-07T17:33:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000217.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77726119941406,
              68.12308532019077,
              616.7141324811449
            ],
            [
              -151.77687753002928,
              68.12743090421618,
              616.7141324811449
            ],
            [
              -151.76523702516008,
              68.12728268676472,
              680.5541324811448
            ],
            [
              -151.76562270045312,
              68.12293713063166,
              680.5541324811448
            ],
            [
              -151.77726119941406,
              68.12308532019077,
              616.7141324811449
            ]
          ]
        ]
      },
      "bbox": [
        -151.7772612,
        68.12293713,
        616.7141325,
        -151.765237,
        68.1274309,
        680.5541325
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:58Z",
        "pc:count": 5186887,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93472.59192,
            "count": 5186887,
            "maximum": 93716.62878,
            "minimum": 93228.10878,
            "name": "X",
            "position": 0,
            "stddev": 133.244608,
            "variance": 17754.12555
          },
          {
            "average": 2019837.298,
            "count": 5186887,
            "maximum": 2020080.273,
            "minimum": 2019599.373,
            "name": "Y",
            "position": 1,
            "stddev": 129.9712429,
            "variance": 16892.52398
          },
          {
            "average": 637.524149,
            "count": 5186887,
            "maximum": 680.5541325,
            "minimum": 616.7141325,
            "name": "Z",
            "position": 2,
            "stddev": 18.54423229,
            "variance": 343.8885512
          },
          {
            "average": 46309.07647,
            "count": 5186887,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13659.70374,
            "variance": 186587506.3
          },
          {
            "average": 1.001308685,
            "count": 5186887,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03616273687,
            "variance": 0.001307743538
          },
          {
            "average": 1.002617948,
            "count": 5186887,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05112150519,
            "variance": 0.002613408293
          },
          {
            "average": 0.4966589787,
            "count": 5186887,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999888856,
            "variance": 0.2499888858
          },
          {
            "average": 0.000401589624,
            "count": 5186887,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02003567885,
            "variance": 0.0004014284272
          },
          {
            "average": 1.289481533,
            "count": 5186887,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5521858211,
            "variance": 0.304909181
          },
          {
            "average": 1.76375868,
            "count": 5186887,
            "maximum": 21.61800003,
            "minimum": -16.33799934,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.92981221,
            "variance": 119.460795
          },
          {
            "average": 0.4919463254,
            "count": 5186887,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999351823,
            "variance": 0.2499351865
          },
          {
            "average": 413.5143592,
            "count": 5186887,
            "maximum": 631,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 106.6006882,
            "variance": 11363.70673
          },
          {
            "average": 249236209,
            "count": 5186887,
            "maximum": 249242418.7,
            "minimum": 249234384.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2952.114749,
            "variance": 8714981.492
          },
          {
            "average": 0.4919463254,
            "count": 5186887,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999351823,
            "variance": 0.2499351865
          },
          {
            "average": 0,
            "count": 5186887,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5186887,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5186887,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2116851591,
            "count": 5186887,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4085028577,
            "variance": 0.1668745847
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93228.10878,
          2019599.373,
          616.7141325,
          93716.62878,
          2020080.273,
          680.5541325
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93228.10878097716,
                2019599.3727740531,
                616.7141324811449
              ],
              [
                93228.10878097716,
                2020080.272774053,
                616.7141324811449
              ],
              [
                93716.62878097715,
                2020080.272774053,
                680.5541324811448
              ],
              [
                93716.62878097715,
                2019599.3727740531,
                680.5541324811448
              ],
              [
                93228.10878097716,
                2019599.3727740531,
                616.7141324811449
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:58+00:00",
        "end_time": "2019-08-07T17:33:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000217.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000217.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000217.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000217.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7772612,
            68.12293713,
            616.7141325,
            -151.765237,
            68.1274309,
            680.5541325
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77726119941406,
                  68.12308532019077,
                  616.7141324811449
                ],
                [
                  -151.77687753002928,
                  68.12743090421618,
                  616.7141324811449
                ],
                [
                  -151.76523702516008,
                  68.12728268676472,
                  680.5541324811448
                ],
                [
                  -151.76562270045312,
                  68.12293713063166,
                  680.5541324811448
                ],
                [
                  -151.77726119941406,
                  68.12308532019077,
                  616.7141324811449
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000217.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000217.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:58Z",
            "pc:count": 5186887,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93472.59192,
                "count": 5186887,
                "maximum": 93716.62878,
                "minimum": 93228.10878,
                "name": "X",
                "position": 0,
                "stddev": 133.244608,
                "variance": 17754.12555
              },
              {
                "average": 2019837.298,
                "count": 5186887,
                "maximum": 2020080.273,
                "minimum": 2019599.373,
                "name": "Y",
                "position": 1,
                "stddev": 129.9712429,
                "variance": 16892.52398
              },
              {
                "average": 637.524149,
                "count": 5186887,
                "maximum": 680.5541325,
                "minimum": 616.7141325,
                "name": "Z",
                "position": 2,
                "stddev": 18.54423229,
                "variance": 343.8885512
              },
              {
                "average": 46309.07647,
                "count": 5186887,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13659.70374,
                "variance": 186587506.3
              },
              {
                "average": 1.001308685,
                "count": 5186887,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03616273687,
                "variance": 0.001307743538
              },
              {
                "average": 1.002617948,
                "count": 5186887,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05112150519,
                "variance": 0.002613408293
              },
              {
                "average": 0.4966589787,
                "count": 5186887,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999888856,
                "variance": 0.2499888858
              },
              {
                "average": 0.000401589624,
                "count": 5186887,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02003567885,
                "variance": 0.0004014284272
              },
              {
                "average": 1.289481533,
                "count": 5186887,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5521858211,
                "variance": 0.304909181
              },
              {
                "average": 1.76375868,
                "count": 5186887,
                "maximum": 21.61800003,
                "minimum": -16.33799934,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.92981221,
                "variance": 119.460795
              },
              {
                "average": 0.4919463254,
                "count": 5186887,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999351823,
                "variance": 0.2499351865
              },
              {
                "average": 413.5143592,
                "count": 5186887,
                "maximum": 631,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 106.6006882,
                "variance": 11363.70673
              },
              {
                "average": 249236209,
                "count": 5186887,
                "maximum": 249242418.7,
                "minimum": 249234384.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2952.114749,
                "variance": 8714981.492
              },
              {
                "average": 0.4919463254,
                "count": 5186887,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999351823,
                "variance": 0.2499351865
              },
              {
                "average": 0,
                "count": 5186887,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5186887,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5186887,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2116851591,
                "count": 5186887,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4085028577,
                "variance": 0.1668745847
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93228.10878,
              2019599.373,
              616.7141325,
              93716.62878,
              2020080.273,
              680.5541325
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93228.10878097716,
                    2019599.3727740531,
                    616.7141324811449
                  ],
                  [
                    93228.10878097716,
                    2020080.272774053,
                    616.7141324811449
                  ],
                  [
                    93716.62878097715,
                    2020080.272774053,
                    680.5541324811448
                  ],
                  [
                    93716.62878097715,
                    2019599.3727740531,
                    680.5541324811448
                  ],
                  [
                    93228.10878097716,
                    2019599.3727740531,
                    616.7141324811449
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:58+00:00",
            "end_time": "2019-08-07T17:33:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000373.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77916205555948,
              68.14767097287081,
              676.6594460688525
            ],
            [
              -151.7787784353562,
              68.15201586293433,
              676.6594460688525
            ],
            [
              -151.7671255915999,
              68.15186774613115,
              743.6994460688525
            ],
            [
              -151.76751122130366,
              68.14752288397138,
              743.6994460688525
            ],
            [
              -151.77916205555948,
              68.14767097287081,
              676.6594460688525
            ]
          ]
        ]
      },
      "bbox": [
        -151.7791621,
        68.14752288,
        676.6594461,
        -151.7671256,
        68.15201586,
        743.6994461
      ],
      "properties": {
        "datetime": "2019-08-18T19:03:13Z",
        "pc:count": 5310322,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93303.77289,
            "count": 5310322,
            "maximum": 93546.05837,
            "minimum": 93057.49837,
            "name": "X",
            "position": 0,
            "stddev": 134.5542169,
            "variance": 18104.83729
          },
          {
            "average": 2022554.288,
            "count": 5310322,
            "maximum": 2022795.09,
            "minimum": 2022314.31,
            "name": "Y",
            "position": 1,
            "stddev": 131.102272,
            "variance": 17187.80572
          },
          {
            "average": 697.6664821,
            "count": 5310322,
            "maximum": 743.6994461,
            "minimum": 676.6594461,
            "name": "Z",
            "position": 2,
            "stddev": 15.18646417,
            "variance": 230.6286941
          },
          {
            "average": 50401.99505,
            "count": 5310322,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10002.21021,
            "variance": 100044209.2
          },
          {
            "average": 1.003579256,
            "count": 5310322,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05975754971,
            "variance": 0.003570964747
          },
          {
            "average": 1.007158135,
            "count": 5310322,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08438279218,
            "variance": 0.007120455616
          },
          {
            "average": 0.5019396187,
            "count": 5310322,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999962849,
            "variance": 0.249996285
          },
          {
            "average": 0.0005835804307,
            "count": 5310322,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02415036179,
            "variance": 0.0005832399744
          },
          {
            "average": 1.28518459,
            "count": 5310322,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5807994849,
            "variance": 0.3373280417
          },
          {
            "average": -0.05296592898,
            "count": 5310322,
            "maximum": 21.68400002,
            "minimum": -21.11400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.48068806,
            "variance": 131.8061983
          },
          {
            "average": 0.4896049618,
            "count": 5310322,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998919786,
            "variance": 0.2498919902
          },
          {
            "average": 425.6979057,
            "count": 5310322,
            "maximum": 723,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 116.5385477,
            "variance": 13581.23309
          },
          {
            "average": 249239894.1,
            "count": 5310322,
            "maximum": 250190193.5,
            "minimum": 249234430.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 54570.48213,
            "variance": 2977937520
          },
          {
            "average": 0.4896049618,
            "count": 5310322,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998919786,
            "variance": 0.2498919902
          },
          {
            "average": 0,
            "count": 5310322,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5310322,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5310322,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2573214958,
            "count": 5310322,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4371580716,
            "variance": 0.1911071796
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93057.49837,
          2022314.31,
          676.6594461,
          93546.05837,
          2022795.09,
          743.6994461
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93057.49836782862,
                2022314.3101375268,
                676.6594460688525
              ],
              [
                93057.49836782862,
                2022795.0901375266,
                676.6594460688525
              ],
              [
                93546.05836782862,
                2022795.0901375266,
                743.6994460688525
              ],
              [
                93546.05836782862,
                2022314.3101375268,
                743.6994460688525
              ],
              [
                93057.49836782862,
                2022314.3101375268,
                676.6594460688525
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-18T19:03:13+00:00",
        "end_time": "2019-08-07T17:33:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000373.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000373.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000373.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000373.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7791621,
            68.14752288,
            676.6594461,
            -151.7671256,
            68.15201586,
            743.6994461
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77916205555948,
                  68.14767097287081,
                  676.6594460688525
                ],
                [
                  -151.7787784353562,
                  68.15201586293433,
                  676.6594460688525
                ],
                [
                  -151.7671255915999,
                  68.15186774613115,
                  743.6994460688525
                ],
                [
                  -151.76751122130366,
                  68.14752288397138,
                  743.6994460688525
                ],
                [
                  -151.77916205555948,
                  68.14767097287081,
                  676.6594460688525
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000373.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000373.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-18T19:03:13Z",
            "pc:count": 5310322,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93303.77289,
                "count": 5310322,
                "maximum": 93546.05837,
                "minimum": 93057.49837,
                "name": "X",
                "position": 0,
                "stddev": 134.5542169,
                "variance": 18104.83729
              },
              {
                "average": 2022554.288,
                "count": 5310322,
                "maximum": 2022795.09,
                "minimum": 2022314.31,
                "name": "Y",
                "position": 1,
                "stddev": 131.102272,
                "variance": 17187.80572
              },
              {
                "average": 697.6664821,
                "count": 5310322,
                "maximum": 743.6994461,
                "minimum": 676.6594461,
                "name": "Z",
                "position": 2,
                "stddev": 15.18646417,
                "variance": 230.6286941
              },
              {
                "average": 50401.99505,
                "count": 5310322,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10002.21021,
                "variance": 100044209.2
              },
              {
                "average": 1.003579256,
                "count": 5310322,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05975754971,
                "variance": 0.003570964747
              },
              {
                "average": 1.007158135,
                "count": 5310322,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08438279218,
                "variance": 0.007120455616
              },
              {
                "average": 0.5019396187,
                "count": 5310322,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999962849,
                "variance": 0.249996285
              },
              {
                "average": 0.0005835804307,
                "count": 5310322,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02415036179,
                "variance": 0.0005832399744
              },
              {
                "average": 1.28518459,
                "count": 5310322,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5807994849,
                "variance": 0.3373280417
              },
              {
                "average": -0.05296592898,
                "count": 5310322,
                "maximum": 21.68400002,
                "minimum": -21.11400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.48068806,
                "variance": 131.8061983
              },
              {
                "average": 0.4896049618,
                "count": 5310322,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998919786,
                "variance": 0.2498919902
              },
              {
                "average": 425.6979057,
                "count": 5310322,
                "maximum": 723,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 116.5385477,
                "variance": 13581.23309
              },
              {
                "average": 249239894.1,
                "count": 5310322,
                "maximum": 250190193.5,
                "minimum": 249234430.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 54570.48213,
                "variance": 2977937520
              },
              {
                "average": 0.4896049618,
                "count": 5310322,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998919786,
                "variance": 0.2498919902
              },
              {
                "average": 0,
                "count": 5310322,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5310322,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5310322,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2573214958,
                "count": 5310322,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4371580716,
                "variance": 0.1911071796
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93057.49837,
              2022314.31,
              676.6594461,
              93546.05837,
              2022795.09,
              743.6994461
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93057.49836782862,
                    2022314.3101375268,
                    676.6594460688525
                  ],
                  [
                    93057.49836782862,
                    2022795.0901375266,
                    676.6594460688525
                  ],
                  [
                    93546.05836782862,
                    2022795.0901375266,
                    743.6994460688525
                  ],
                  [
                    93546.05836782862,
                    2022314.3101375268,
                    743.6994460688525
                  ],
                  [
                    93057.49836782862,
                    2022314.3101375268,
                    676.6594460688525
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-18T19:03:13+00:00",
            "end_time": "2019-08-07T17:33:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000427.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.75779268473826,
              68.15610019895291,
              700.0183089901097
            ],
            [
              -151.7574052287499,
              68.16044535565817,
              700.0183089901097
            ],
            [
              -151.74574622097643,
              68.16029578251405,
              755.9383089901098
            ],
            [
              -151.7461356882199,
              68.1559506540007,
              755.9383089901098
            ],
            [
              -151.75779268473826,
              68.15610019895291,
              700.0183089901097
            ]
          ]
        ]
      },
      "bbox": [
        -151.7577927,
        68.15595065,
        700.018309,
        -151.7457462,
        68.16044536,
        755.938309
      ],
      "properties": {
        "datetime": "2019-08-07T20:13:06Z",
        "pc:count": 4780406,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94159.33574,
            "count": 4780406,
            "maximum": 94409.77111,
            "minimum": 93921.11111,
            "name": "X",
            "position": 0,
            "stddev": 134.6872331,
            "variance": 18140.65077
          },
          {
            "average": 2023512.678,
            "count": 4780406,
            "maximum": 2023756.867,
            "minimum": 2023276.067,
            "name": "Y",
            "position": 1,
            "stddev": 131.0438551,
            "variance": 17172.49197
          },
          {
            "average": 724.0858833,
            "count": 4780406,
            "maximum": 755.938309,
            "minimum": 700.018309,
            "name": "Z",
            "position": 2,
            "stddev": 12.38284485,
            "variance": 153.3348466
          },
          {
            "average": 48641.28559,
            "count": 4780406,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9993.804521,
            "variance": 99876128.8
          },
          {
            "average": 1.003122747,
            "count": 4780406,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05587665574,
            "variance": 0.003122200656
          },
          {
            "average": 1.00624424,
            "count": 4780406,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0789484832,
            "variance": 0.006232863
          },
          {
            "average": 0.4980091649,
            "count": 4780406,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960889,
            "variance": 0.2499960889
          },
          {
            "average": 0.0005986939185,
            "count": 4780406,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0244608996,
            "variance": 0.0005983356092
          },
          {
            "average": 1.300270103,
            "count": 4780406,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5754389417,
            "variance": 0.3311299756
          },
          {
            "average": 2.044527886,
            "count": 4780406,
            "maximum": 21.36599922,
            "minimum": -20.95800018,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.27975333,
            "variance": 127.2328351
          },
          {
            "average": 0.497525524,
            "count": 4780406,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999939292,
            "variance": 0.2499939293
          },
          {
            "average": 431.9227392,
            "count": 4780406,
            "maximum": 636,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 122.188738,
            "variance": 14930.0877
          },
          {
            "average": 249236740.8,
            "count": 4780406,
            "maximum": 249243986.6,
            "minimum": 249233894.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4071.567146,
            "variance": 16577659.02
          },
          {
            "average": 0.497525524,
            "count": 4780406,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999939292,
            "variance": 0.2499939293
          },
          {
            "average": 0,
            "count": 4780406,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4780406,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4780406,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2793549335,
            "count": 4780406,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4486822893,
            "variance": 0.2013157967
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93921.11111,
          2023276.067,
          700.018309,
          94409.77111,
          2023756.867,
          755.938309
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93921.11111057083,
                2023276.066540123,
                700.0183089901097
              ],
              [
                93921.11111057083,
                2023756.8665401228,
                700.0183089901097
              ],
              [
                94409.77111057083,
                2023756.8665401228,
                755.9383089901098
              ],
              [
                94409.77111057083,
                2023276.066540123,
                755.9383089901098
              ],
              [
                93921.11111057083,
                2023276.066540123,
                700.0183089901097
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:13:06+00:00",
        "end_time": "2019-08-07T17:24:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000427.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000427.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000427.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000427.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7577927,
            68.15595065,
            700.018309,
            -151.7457462,
            68.16044536,
            755.938309
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.75779268473826,
                  68.15610019895291,
                  700.0183089901097
                ],
                [
                  -151.7574052287499,
                  68.16044535565817,
                  700.0183089901097
                ],
                [
                  -151.74574622097643,
                  68.16029578251405,
                  755.9383089901098
                ],
                [
                  -151.7461356882199,
                  68.1559506540007,
                  755.9383089901098
                ],
                [
                  -151.75779268473826,
                  68.15610019895291,
                  700.0183089901097
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000427.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000427.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:13:06Z",
            "pc:count": 4780406,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94159.33574,
                "count": 4780406,
                "maximum": 94409.77111,
                "minimum": 93921.11111,
                "name": "X",
                "position": 0,
                "stddev": 134.6872331,
                "variance": 18140.65077
              },
              {
                "average": 2023512.678,
                "count": 4780406,
                "maximum": 2023756.867,
                "minimum": 2023276.067,
                "name": "Y",
                "position": 1,
                "stddev": 131.0438551,
                "variance": 17172.49197
              },
              {
                "average": 724.0858833,
                "count": 4780406,
                "maximum": 755.938309,
                "minimum": 700.018309,
                "name": "Z",
                "position": 2,
                "stddev": 12.38284485,
                "variance": 153.3348466
              },
              {
                "average": 48641.28559,
                "count": 4780406,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9993.804521,
                "variance": 99876128.8
              },
              {
                "average": 1.003122747,
                "count": 4780406,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05587665574,
                "variance": 0.003122200656
              },
              {
                "average": 1.00624424,
                "count": 4780406,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0789484832,
                "variance": 0.006232863
              },
              {
                "average": 0.4980091649,
                "count": 4780406,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960889,
                "variance": 0.2499960889
              },
              {
                "average": 0.0005986939185,
                "count": 4780406,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0244608996,
                "variance": 0.0005983356092
              },
              {
                "average": 1.300270103,
                "count": 4780406,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5754389417,
                "variance": 0.3311299756
              },
              {
                "average": 2.044527886,
                "count": 4780406,
                "maximum": 21.36599922,
                "minimum": -20.95800018,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.27975333,
                "variance": 127.2328351
              },
              {
                "average": 0.497525524,
                "count": 4780406,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999939292,
                "variance": 0.2499939293
              },
              {
                "average": 431.9227392,
                "count": 4780406,
                "maximum": 636,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 122.188738,
                "variance": 14930.0877
              },
              {
                "average": 249236740.8,
                "count": 4780406,
                "maximum": 249243986.6,
                "minimum": 249233894.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4071.567146,
                "variance": 16577659.02
              },
              {
                "average": 0.497525524,
                "count": 4780406,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999939292,
                "variance": 0.2499939293
              },
              {
                "average": 0,
                "count": 4780406,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4780406,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4780406,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2793549335,
                "count": 4780406,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4486822893,
                "variance": 0.2013157967
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93921.11111,
              2023276.067,
              700.018309,
              94409.77111,
              2023756.867,
              755.938309
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93921.11111057083,
                    2023276.066540123,
                    700.0183089901097
                  ],
                  [
                    93921.11111057083,
                    2023756.8665401228,
                    700.0183089901097
                  ],
                  [
                    94409.77111057083,
                    2023756.8665401228,
                    755.9383089901098
                  ],
                  [
                    94409.77111057083,
                    2023276.066540123,
                    755.9383089901098
                  ],
                  [
                    93921.11111057083,
                    2023276.066540123,
                    700.0183089901097
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:13:06+00:00",
            "end_time": "2019-08-07T17:24:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000250.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7006550772246,
              68.12799154473626,
              725.9120726975227
            ],
            [
              -151.70025822822467,
              68.13233576986296,
              725.9120726975227
            ],
            [
              -151.6886168691255,
              68.13218246930148,
              813.6520726975227
            ],
            [
              -151.68901572374992,
              68.12783827302182,
              813.6520726975227
            ],
            [
              -151.7006550772246,
              68.12799154473626,
              725.9120726975227
            ]
          ]
        ]
      },
      "bbox": [
        -151.7006551,
        68.12783827,
        725.9120727,
        -151.6886169,
        68.13233577,
        813.6520727
      ],
      "properties": {
        "datetime": "2019-08-07T19:34:49Z",
        "pc:count": 5485591,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96671.51504,
            "count": 5485591,
            "maximum": 96909.62506,
            "minimum": 96421.14506,
            "name": "X",
            "position": 0,
            "stddev": 131.2501549,
            "variance": 17226.60316
          },
          {
            "average": 2020493.195,
            "count": 5485591,
            "maximum": 2020731.838,
            "minimum": 2020251.078,
            "name": "Y",
            "position": 1,
            "stddev": 128.9673922,
            "variance": 16632.58824
          },
          {
            "average": 764.8697678,
            "count": 5485591,
            "maximum": 813.6520727,
            "minimum": 725.9120727,
            "name": "Z",
            "position": 2,
            "stddev": 21.65876638,
            "variance": 469.1021611
          },
          {
            "average": 48080.87438,
            "count": 5485591,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10423.80009,
            "variance": 108655608.4
          },
          {
            "average": 1.000691812,
            "count": 5485591,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02673327152,
            "variance": 0.0007146678064
          },
          {
            "average": 1.001379432,
            "count": 5485591,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03802726234,
            "variance": 0.001446072681
          },
          {
            "average": 0.5011583984,
            "count": 5485591,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987037,
            "variance": 0.2499987037
          },
          {
            "average": 0.0003871962018,
            "count": 5485591,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01967349363,
            "variance": 0.0003870463515
          },
          {
            "average": 1.250775896,
            "count": 5485591,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5271656158,
            "variance": 0.2779035865
          },
          {
            "average": -1.205658067,
            "count": 5485591,
            "maximum": 21.51600075,
            "minimum": -20.91600037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.96044361,
            "variance": 120.1313242
          },
          {
            "average": 0.4858052669,
            "count": 5485591,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997985145,
            "variance": 0.2497985551
          },
          {
            "average": 426.7346572,
            "count": 5485591,
            "maximum": 629,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 122.855133,
            "variance": 15093.38371
          },
          {
            "average": 249235341.4,
            "count": 5485591,
            "maximum": 249241689.6,
            "minimum": 249232950,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3540.36362,
            "variance": 12534174.56
          },
          {
            "average": 0.4858052669,
            "count": 5485591,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997985145,
            "variance": 0.2497985551
          },
          {
            "average": 0,
            "count": 5485591,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5485591,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5485591,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1645607556,
            "count": 5485591,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3707836814,
            "variance": 0.1374805384
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96421.14506,
          2020251.078,
          725.9120727,
          96909.62506,
          2020731.838,
          813.6520727
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96421.1450616501,
                2020251.0780873538,
                725.9120726975227
              ],
              [
                96421.1450616501,
                2020731.8380873536,
                725.9120726975227
              ],
              [
                96909.6250616501,
                2020731.8380873536,
                813.6520726975227
              ],
              [
                96909.6250616501,
                2020251.0780873538,
                813.6520726975227
              ],
              [
                96421.1450616501,
                2020251.0780873538,
                725.9120726975227
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:34:49+00:00",
        "end_time": "2019-08-07T17:09:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000250.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000250.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000250.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000250.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7006551,
            68.12783827,
            725.9120727,
            -151.6886169,
            68.13233577,
            813.6520727
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7006550772246,
                  68.12799154473626,
                  725.9120726975227
                ],
                [
                  -151.70025822822467,
                  68.13233576986296,
                  725.9120726975227
                ],
                [
                  -151.6886168691255,
                  68.13218246930148,
                  813.6520726975227
                ],
                [
                  -151.68901572374992,
                  68.12783827302182,
                  813.6520726975227
                ],
                [
                  -151.7006550772246,
                  68.12799154473626,
                  725.9120726975227
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000250.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000250.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:34:49Z",
            "pc:count": 5485591,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96671.51504,
                "count": 5485591,
                "maximum": 96909.62506,
                "minimum": 96421.14506,
                "name": "X",
                "position": 0,
                "stddev": 131.2501549,
                "variance": 17226.60316
              },
              {
                "average": 2020493.195,
                "count": 5485591,
                "maximum": 2020731.838,
                "minimum": 2020251.078,
                "name": "Y",
                "position": 1,
                "stddev": 128.9673922,
                "variance": 16632.58824
              },
              {
                "average": 764.8697678,
                "count": 5485591,
                "maximum": 813.6520727,
                "minimum": 725.9120727,
                "name": "Z",
                "position": 2,
                "stddev": 21.65876638,
                "variance": 469.1021611
              },
              {
                "average": 48080.87438,
                "count": 5485591,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10423.80009,
                "variance": 108655608.4
              },
              {
                "average": 1.000691812,
                "count": 5485591,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02673327152,
                "variance": 0.0007146678064
              },
              {
                "average": 1.001379432,
                "count": 5485591,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03802726234,
                "variance": 0.001446072681
              },
              {
                "average": 0.5011583984,
                "count": 5485591,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987037,
                "variance": 0.2499987037
              },
              {
                "average": 0.0003871962018,
                "count": 5485591,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01967349363,
                "variance": 0.0003870463515
              },
              {
                "average": 1.250775896,
                "count": 5485591,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5271656158,
                "variance": 0.2779035865
              },
              {
                "average": -1.205658067,
                "count": 5485591,
                "maximum": 21.51600075,
                "minimum": -20.91600037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.96044361,
                "variance": 120.1313242
              },
              {
                "average": 0.4858052669,
                "count": 5485591,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997985145,
                "variance": 0.2497985551
              },
              {
                "average": 426.7346572,
                "count": 5485591,
                "maximum": 629,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 122.855133,
                "variance": 15093.38371
              },
              {
                "average": 249235341.4,
                "count": 5485591,
                "maximum": 249241689.6,
                "minimum": 249232950,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3540.36362,
                "variance": 12534174.56
              },
              {
                "average": 0.4858052669,
                "count": 5485591,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997985145,
                "variance": 0.2497985551
              },
              {
                "average": 0,
                "count": 5485591,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5485591,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5485591,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1645607556,
                "count": 5485591,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3707836814,
                "variance": 0.1374805384
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96421.14506,
              2020251.078,
              725.9120727,
              96909.62506,
              2020731.838,
              813.6520727
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96421.1450616501,
                    2020251.0780873538,
                    725.9120726975227
                  ],
                  [
                    96421.1450616501,
                    2020731.8380873536,
                    725.9120726975227
                  ],
                  [
                    96909.6250616501,
                    2020731.8380873536,
                    813.6520726975227
                  ],
                  [
                    96909.6250616501,
                    2020251.0780873538,
                    813.6520726975227
                  ],
                  [
                    96421.1450616501,
                    2020251.0780873538,
                    725.9120726975227
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:34:49+00:00",
            "end_time": "2019-08-07T17:09:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000248.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7226327735359,
              68.127764069034,
              664.760799501153
            ],
            [
              -151.7222397197708,
              68.13210834015977,
              664.760799501153
            ],
            [
              -151.71059976219505,
              68.13195651942553,
              700.180799501153
            ],
            [
              -151.71099482139405,
              68.1276122768683,
              700.180799501153
            ],
            [
              -151.7226327735359,
              68.127764069034,
              664.760799501153
            ]
          ]
        ]
      },
      "bbox": [
        -151.7226328,
        68.12761228,
        664.7607995,
        -151.7105998,
        68.13210834,
        700.1807995
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:02Z",
        "pc:count": 4402439,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95745.27986,
            "count": 4402439,
            "maximum": 95989.17399,
            "minimum": 95500.75399,
            "name": "X",
            "position": 0,
            "stddev": 132.7043531,
            "variance": 17610.44533
          },
          {
            "average": 2020436.763,
            "count": 4402439,
            "maximum": 2020674.937,
            "minimum": 2020194.177,
            "name": "Y",
            "position": 1,
            "stddev": 130.5309318,
            "variance": 17038.32416
          },
          {
            "average": 682.767654,
            "count": 4402439,
            "maximum": 700.1807995,
            "minimum": 664.7607995,
            "name": "Z",
            "position": 2,
            "stddev": 9.55085017,
            "variance": 91.21873897
          },
          {
            "average": 51000.36986,
            "count": 4402439,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 7892.413094,
            "variance": 62290184.44
          },
          {
            "average": 1.000072914,
            "count": 4402439,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008538666636,
            "variance": 7.290882792e-05
          },
          {
            "average": 1.000145601,
            "count": 4402439,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01206565134,
            "variance": 0.0001455799422
          },
          {
            "average": 0.4975480637,
            "count": 4402439,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999940448,
            "variance": 0.2499940448
          },
          {
            "average": 0.0004729196702,
            "count": 4402439,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02174157594,
            "variance": 0.0004726961246
          },
          {
            "average": 1.260533536,
            "count": 4402439,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4967763803,
            "variance": 0.2467867721
          },
          {
            "average": 2.772408446,
            "count": 4402439,
            "maximum": 21.40200043,
            "minimum": -20.84399986,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97891201,
            "variance": 120.536509
          },
          {
            "average": 0.5085042632,
            "count": 4402439,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999277291,
            "variance": 0.2499277343
          },
          {
            "average": 423.9474214,
            "count": 4402439,
            "maximum": 630,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 119.3740423,
            "variance": 14250.16198
          },
          {
            "average": 249235647.9,
            "count": 4402439,
            "maximum": 249242002.3,
            "minimum": 249233414.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3432.085026,
            "variance": 11779207.63
          },
          {
            "average": 0.5085042632,
            "count": 4402439,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999277291,
            "variance": 0.2499277343
          },
          {
            "average": 0,
            "count": 4402439,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4402439,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4402439,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2508564003,
            "count": 4402439,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4335060662,
            "variance": 0.1879275094
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95500.75399,
          2020194.177,
          664.7607995,
          95989.17399,
          2020674.937,
          700.1807995
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95500.75398998913,
                2020194.1772030122,
                664.760799501153
              ],
              [
                95500.75398998913,
                2020674.937203012,
                664.760799501153
              ],
              [
                95989.17398998914,
                2020674.937203012,
                700.180799501153
              ],
              [
                95989.17398998914,
                2020194.1772030122,
                700.180799501153
              ],
              [
                95500.75398998913,
                2020194.1772030122,
                664.760799501153
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:02+00:00",
        "end_time": "2019-08-07T17:16:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000248.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000248.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000248.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000248.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7226328,
            68.12761228,
            664.7607995,
            -151.7105998,
            68.13210834,
            700.1807995
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7226327735359,
                  68.127764069034,
                  664.760799501153
                ],
                [
                  -151.7222397197708,
                  68.13210834015977,
                  664.760799501153
                ],
                [
                  -151.71059976219505,
                  68.13195651942553,
                  700.180799501153
                ],
                [
                  -151.71099482139405,
                  68.1276122768683,
                  700.180799501153
                ],
                [
                  -151.7226327735359,
                  68.127764069034,
                  664.760799501153
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000248.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000248.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:02Z",
            "pc:count": 4402439,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95745.27986,
                "count": 4402439,
                "maximum": 95989.17399,
                "minimum": 95500.75399,
                "name": "X",
                "position": 0,
                "stddev": 132.7043531,
                "variance": 17610.44533
              },
              {
                "average": 2020436.763,
                "count": 4402439,
                "maximum": 2020674.937,
                "minimum": 2020194.177,
                "name": "Y",
                "position": 1,
                "stddev": 130.5309318,
                "variance": 17038.32416
              },
              {
                "average": 682.767654,
                "count": 4402439,
                "maximum": 700.1807995,
                "minimum": 664.7607995,
                "name": "Z",
                "position": 2,
                "stddev": 9.55085017,
                "variance": 91.21873897
              },
              {
                "average": 51000.36986,
                "count": 4402439,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 7892.413094,
                "variance": 62290184.44
              },
              {
                "average": 1.000072914,
                "count": 4402439,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008538666636,
                "variance": 7.290882792e-05
              },
              {
                "average": 1.000145601,
                "count": 4402439,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01206565134,
                "variance": 0.0001455799422
              },
              {
                "average": 0.4975480637,
                "count": 4402439,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999940448,
                "variance": 0.2499940448
              },
              {
                "average": 0.0004729196702,
                "count": 4402439,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02174157594,
                "variance": 0.0004726961246
              },
              {
                "average": 1.260533536,
                "count": 4402439,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4967763803,
                "variance": 0.2467867721
              },
              {
                "average": 2.772408446,
                "count": 4402439,
                "maximum": 21.40200043,
                "minimum": -20.84399986,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97891201,
                "variance": 120.536509
              },
              {
                "average": 0.5085042632,
                "count": 4402439,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999277291,
                "variance": 0.2499277343
              },
              {
                "average": 423.9474214,
                "count": 4402439,
                "maximum": 630,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 119.3740423,
                "variance": 14250.16198
              },
              {
                "average": 249235647.9,
                "count": 4402439,
                "maximum": 249242002.3,
                "minimum": 249233414.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3432.085026,
                "variance": 11779207.63
              },
              {
                "average": 0.5085042632,
                "count": 4402439,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999277291,
                "variance": 0.2499277343
              },
              {
                "average": 0,
                "count": 4402439,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4402439,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4402439,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2508564003,
                "count": 4402439,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4335060662,
                "variance": 0.1879275094
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95500.75399,
              2020194.177,
              664.7607995,
              95989.17399,
              2020674.937,
              700.1807995
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95500.75398998913,
                    2020194.1772030122,
                    664.760799501153
                  ],
                  [
                    95500.75398998913,
                    2020674.937203012,
                    664.760799501153
                  ],
                  [
                    95989.17398998914,
                    2020674.937203012,
                    700.180799501153
                  ],
                  [
                    95989.17398998914,
                    2020194.1772030122,
                    700.180799501153
                  ],
                  [
                    95500.75398998913,
                    2020194.1772030122,
                    664.760799501153
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:02+00:00",
            "end_time": "2019-08-07T17:16:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000377.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73516760921575,
              68.14813817358788,
              654.0118809651965
            ],
            [
              -151.73477641776725,
              68.1524826122694,
              654.0118809651965
            ],
            [
              -151.72312457415381,
              68.15233158224864,
              671.1118809651964
            ],
            [
              -151.72351777466488,
              68.14798717201741,
              671.1118809651964
            ],
            [
              -151.73516760921575,
              68.14813817358788,
              654.0118809651965
            ]
          ]
        ]
      },
      "bbox": [
        -151.7351676,
        68.14798717,
        654.011881,
        -151.7231246,
        68.15248261,
        671.111881
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:33Z",
        "pc:count": 4157181,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95144.53515,
            "count": 4157181,
            "maximum": 95387.00309,
            "minimum": 94898.48309,
            "name": "X",
            "position": 0,
            "stddev": 134.9819131,
            "variance": 18220.11686
          },
          {
            "average": 2022662.604,
            "count": 4157181,
            "maximum": 2022908.946,
            "minimum": 2022428.206,
            "name": "Y",
            "position": 1,
            "stddev": 129.8212628,
            "variance": 16853.56026
          },
          {
            "average": 661.372519,
            "count": 4157181,
            "maximum": 671.111881,
            "minimum": 654.011881,
            "name": "Z",
            "position": 2,
            "stddev": 3.581194884,
            "variance": 12.8249568
          },
          {
            "average": 52529.23376,
            "count": 4157181,
            "maximum": 65535,
            "minimum": 1228,
            "name": "Intensity",
            "position": 3,
            "stddev": 6020.57548,
            "variance": 36247329.11
          },
          {
            "average": 1.00005268,
            "count": 4157181,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007257903727,
            "variance": 5.267716652e-05
          },
          {
            "average": 1.000104879,
            "count": 4157181,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01024049747,
            "variance": 0.0001048677885
          },
          {
            "average": 0.4959892292,
            "count": 4157181,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999839736,
            "variance": 0.2499839739
          },
          {
            "average": 0.0004551160991,
            "count": 4157181,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02132859765,
            "variance": 0.0004549090779
          },
          {
            "average": 1.282152497,
            "count": 4157181,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.46479651,
            "variance": 0.2160357957
          },
          {
            "average": -1.555918928,
            "count": 4157181,
            "maximum": 21.54000092,
            "minimum": -20.9279995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72994919,
            "variance": 115.1318096
          },
          {
            "average": 0.4744460248,
            "count": 4157181,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993466274,
            "variance": 0.2493470543
          },
          {
            "average": 417.8594728,
            "count": 4157181,
            "maximum": 633,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 115.5757011,
            "variance": 13357.74268
          },
          {
            "average": 249235835.9,
            "count": 4157181,
            "maximum": 249243053.4,
            "minimum": 249233587.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3692.071338,
            "variance": 13631390.76
          },
          {
            "average": 0.4744460248,
            "count": 4157181,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993466274,
            "variance": 0.2493470543
          },
          {
            "average": 0,
            "count": 4157181,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4157181,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4157181,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1978674972,
            "count": 4157181,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3983917531,
            "variance": 0.1587159889
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94898.48309,
          2022428.206,
          654.011881,
          95387.00309,
          2022908.946,
          671.111881
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94898.48308633784,
                2022428.2061671843,
                654.0118809651965
              ],
              [
                94898.48308633784,
                2022908.9461671845,
                654.0118809651965
              ],
              [
                95387.00308633783,
                2022908.9461671845,
                671.1118809651964
              ],
              [
                95387.00308633783,
                2022428.2061671843,
                671.1118809651964
              ],
              [
                94898.48308633784,
                2022428.2061671843,
                654.0118809651965
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:33+00:00",
        "end_time": "2019-08-07T17:19:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000377.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000377.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000377.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000377.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7351676,
            68.14798717,
            654.011881,
            -151.7231246,
            68.15248261,
            671.111881
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73516760921575,
                  68.14813817358788,
                  654.0118809651965
                ],
                [
                  -151.73477641776725,
                  68.1524826122694,
                  654.0118809651965
                ],
                [
                  -151.72312457415381,
                  68.15233158224864,
                  671.1118809651964
                ],
                [
                  -151.72351777466488,
                  68.14798717201741,
                  671.1118809651964
                ],
                [
                  -151.73516760921575,
                  68.14813817358788,
                  654.0118809651965
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000377.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000377.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:33Z",
            "pc:count": 4157181,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95144.53515,
                "count": 4157181,
                "maximum": 95387.00309,
                "minimum": 94898.48309,
                "name": "X",
                "position": 0,
                "stddev": 134.9819131,
                "variance": 18220.11686
              },
              {
                "average": 2022662.604,
                "count": 4157181,
                "maximum": 2022908.946,
                "minimum": 2022428.206,
                "name": "Y",
                "position": 1,
                "stddev": 129.8212628,
                "variance": 16853.56026
              },
              {
                "average": 661.372519,
                "count": 4157181,
                "maximum": 671.111881,
                "minimum": 654.011881,
                "name": "Z",
                "position": 2,
                "stddev": 3.581194884,
                "variance": 12.8249568
              },
              {
                "average": 52529.23376,
                "count": 4157181,
                "maximum": 65535,
                "minimum": 1228,
                "name": "Intensity",
                "position": 3,
                "stddev": 6020.57548,
                "variance": 36247329.11
              },
              {
                "average": 1.00005268,
                "count": 4157181,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007257903727,
                "variance": 5.267716652e-05
              },
              {
                "average": 1.000104879,
                "count": 4157181,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01024049747,
                "variance": 0.0001048677885
              },
              {
                "average": 0.4959892292,
                "count": 4157181,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999839736,
                "variance": 0.2499839739
              },
              {
                "average": 0.0004551160991,
                "count": 4157181,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02132859765,
                "variance": 0.0004549090779
              },
              {
                "average": 1.282152497,
                "count": 4157181,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.46479651,
                "variance": 0.2160357957
              },
              {
                "average": -1.555918928,
                "count": 4157181,
                "maximum": 21.54000092,
                "minimum": -20.9279995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72994919,
                "variance": 115.1318096
              },
              {
                "average": 0.4744460248,
                "count": 4157181,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993466274,
                "variance": 0.2493470543
              },
              {
                "average": 417.8594728,
                "count": 4157181,
                "maximum": 633,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 115.5757011,
                "variance": 13357.74268
              },
              {
                "average": 249235835.9,
                "count": 4157181,
                "maximum": 249243053.4,
                "minimum": 249233587.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3692.071338,
                "variance": 13631390.76
              },
              {
                "average": 0.4744460248,
                "count": 4157181,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993466274,
                "variance": 0.2493470543
              },
              {
                "average": 0,
                "count": 4157181,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4157181,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4157181,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1978674972,
                "count": 4157181,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3983917531,
                "variance": 0.1587159889
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94898.48309,
              2022428.206,
              654.011881,
              95387.00309,
              2022908.946,
              671.111881
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94898.48308633784,
                    2022428.2061671843,
                    654.0118809651965
                  ],
                  [
                    94898.48308633784,
                    2022908.9461671845,
                    654.0118809651965
                  ],
                  [
                    95387.00308633783,
                    2022908.9461671845,
                    671.1118809651964
                  ],
                  [
                    95387.00308633783,
                    2022428.2061671843,
                    671.1118809651964
                  ],
                  [
                    94898.48308633784,
                    2022428.2061671843,
                    654.0118809651965
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:33+00:00",
            "end_time": "2019-08-07T17:19:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000350.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74585215354205,
              68.14392528905209,
              647.3909993727209
            ],
            [
              -151.74546298542575,
              68.14826842002131,
              647.3909993727209
            ],
            [
              -151.7338149365748,
              68.14811812744546,
              669.4709993727208
            ],
            [
              -151.73420611221152,
              68.14377502477308,
              669.4709993727208
            ],
            [
              -151.74585215354205,
              68.14392528905209,
              647.3909993727209
            ]
          ]
        ]
      },
      "bbox": [
        -151.7458522,
        68.14377502,
        647.3909994,
        -151.7338149,
        68.14826842,
        669.4709994
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:42Z",
        "pc:count": 4389315,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94713.87885,
            "count": 4389315,
            "maximum": 94955.21491,
            "minimum": 94466.77491,
            "name": "X",
            "position": 0,
            "stddev": 133.7169585,
            "variance": 17880.22498
          },
          {
            "average": 2022186.126,
            "count": 4389315,
            "maximum": 2022427.924,
            "minimum": 2021947.324,
            "name": "Y",
            "position": 1,
            "stddev": 128.5406822,
            "variance": 16522.70699
          },
          {
            "average": 656.9577122,
            "count": 4389315,
            "maximum": 669.4709994,
            "minimum": 647.3909994,
            "name": "Z",
            "position": 2,
            "stddev": 4.125800196,
            "variance": 17.02222726
          },
          {
            "average": 45912.1784,
            "count": 4389315,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12348.40337,
            "variance": 152483065.9
          },
          {
            "average": 1.008330457,
            "count": 4389315,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09106818157,
            "variance": 0.008293413695
          },
          {
            "average": 1.016657041,
            "count": 4389315,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1283631461,
            "variance": 0.01647709728
          },
          {
            "average": 0.5094097826,
            "count": 4389315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999115051,
            "variance": 0.2499115129
          },
          {
            "average": 0.000517620631,
            "count": 4389315,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02274539113,
            "variance": 0.0005173528178
          },
          {
            "average": 1.457543147,
            "count": 4389315,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.764384824,
            "variance": 0.5842841591
          },
          {
            "average": -0.7516735116,
            "count": 4389315,
            "maximum": 21.83399963,
            "minimum": -20.96999931,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.00101214,
            "variance": 121.0222682
          },
          {
            "average": 0.5208352556,
            "count": 4389315,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995657604,
            "variance": 0.249565949
          },
          {
            "average": 414.06973,
            "count": 4389315,
            "maximum": 633,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 111.8455948,
            "variance": 12509.43709
          },
          {
            "average": 249235825.2,
            "count": 4389315,
            "maximum": 249243062.7,
            "minimum": 249233779.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3499.342155,
            "variance": 12245395.52
          },
          {
            "average": 0.5208352556,
            "count": 4389315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995657604,
            "variance": 0.249565949
          },
          {
            "average": 0,
            "count": 4389315,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4389315,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4389315,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2388917177,
            "count": 4389315,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4264065036,
            "variance": 0.1818225064
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94466.77491,
          2021947.324,
          647.3909994,
          94955.21491,
          2022427.924,
          669.4709994
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94466.77490986361,
                2021947.3239829312,
                647.3909993727209
              ],
              [
                94466.77490986361,
                2022427.9239829313,
                647.3909993727209
              ],
              [
                94955.21490986361,
                2022427.9239829313,
                669.4709993727208
              ],
              [
                94955.21490986361,
                2021947.3239829312,
                669.4709993727208
              ],
              [
                94466.77490986361,
                2021947.3239829312,
                647.3909993727209
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:42+00:00",
        "end_time": "2019-08-07T17:22:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000350.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000350.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000350.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000350.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7458522,
            68.14377502,
            647.3909994,
            -151.7338149,
            68.14826842,
            669.4709994
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74585215354205,
                  68.14392528905209,
                  647.3909993727209
                ],
                [
                  -151.74546298542575,
                  68.14826842002131,
                  647.3909993727209
                ],
                [
                  -151.7338149365748,
                  68.14811812744546,
                  669.4709993727208
                ],
                [
                  -151.73420611221152,
                  68.14377502477308,
                  669.4709993727208
                ],
                [
                  -151.74585215354205,
                  68.14392528905209,
                  647.3909993727209
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000350.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000350.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:42Z",
            "pc:count": 4389315,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94713.87885,
                "count": 4389315,
                "maximum": 94955.21491,
                "minimum": 94466.77491,
                "name": "X",
                "position": 0,
                "stddev": 133.7169585,
                "variance": 17880.22498
              },
              {
                "average": 2022186.126,
                "count": 4389315,
                "maximum": 2022427.924,
                "minimum": 2021947.324,
                "name": "Y",
                "position": 1,
                "stddev": 128.5406822,
                "variance": 16522.70699
              },
              {
                "average": 656.9577122,
                "count": 4389315,
                "maximum": 669.4709994,
                "minimum": 647.3909994,
                "name": "Z",
                "position": 2,
                "stddev": 4.125800196,
                "variance": 17.02222726
              },
              {
                "average": 45912.1784,
                "count": 4389315,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12348.40337,
                "variance": 152483065.9
              },
              {
                "average": 1.008330457,
                "count": 4389315,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09106818157,
                "variance": 0.008293413695
              },
              {
                "average": 1.016657041,
                "count": 4389315,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1283631461,
                "variance": 0.01647709728
              },
              {
                "average": 0.5094097826,
                "count": 4389315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999115051,
                "variance": 0.2499115129
              },
              {
                "average": 0.000517620631,
                "count": 4389315,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02274539113,
                "variance": 0.0005173528178
              },
              {
                "average": 1.457543147,
                "count": 4389315,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.764384824,
                "variance": 0.5842841591
              },
              {
                "average": -0.7516735116,
                "count": 4389315,
                "maximum": 21.83399963,
                "minimum": -20.96999931,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.00101214,
                "variance": 121.0222682
              },
              {
                "average": 0.5208352556,
                "count": 4389315,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995657604,
                "variance": 0.249565949
              },
              {
                "average": 414.06973,
                "count": 4389315,
                "maximum": 633,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 111.8455948,
                "variance": 12509.43709
              },
              {
                "average": 249235825.2,
                "count": 4389315,
                "maximum": 249243062.7,
                "minimum": 249233779.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3499.342155,
                "variance": 12245395.52
              },
              {
                "average": 0.5208352556,
                "count": 4389315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995657604,
                "variance": 0.249565949
              },
              {
                "average": 0,
                "count": 4389315,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4389315,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4389315,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2388917177,
                "count": 4389315,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4264065036,
                "variance": 0.1818225064
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94466.77491,
              2021947.324,
              647.3909994,
              94955.21491,
              2022427.924,
              669.4709994
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94466.77490986361,
                    2021947.3239829312,
                    647.3909993727209
                  ],
                  [
                    94466.77490986361,
                    2022427.9239829313,
                    647.3909993727209
                  ],
                  [
                    94955.21490986361,
                    2022427.9239829313,
                    669.4709993727208
                  ],
                  [
                    94955.21490986361,
                    2021947.3239829312,
                    669.4709993727208
                  ],
                  [
                    94466.77490986361,
                    2021947.3239829312,
                    647.3909993727209
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:42+00:00",
            "end_time": "2019-08-07T17:22:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000347.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77884415589318,
              68.14357359926414,
              680.0146788085539
            ],
            [
              -151.77846055922492,
              68.14791824337628,
              680.0146788085539
            ],
            [
              -151.76680961463532,
              68.14777010770345,
              697.2146788085539
            ],
            [
              -151.767195220065,
              68.14342549149124,
              697.2146788085539
            ],
            [
              -151.77884415589318,
              68.14357359926414,
              680.0146788085539
            ]
          ]
        ]
      },
      "bbox": [
        -151.7788442,
        68.14342549,
        680.0146788,
        -151.7668096,
        68.14791824,
        697.2146788
      ],
      "properties": {
        "datetime": "2019-08-07T20:08:41Z",
        "pc:count": 5380016,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93328.86682,
            "count": 5380016,
            "maximum": 93574.52688,
            "minimum": 93085.96688,
            "name": "X",
            "position": 0,
            "stddev": 134.5622934,
            "variance": 18107.01081
          },
          {
            "average": 2022101.887,
            "count": 5380016,
            "maximum": 2022342.624,
            "minimum": 2021861.864,
            "name": "Y",
            "position": 1,
            "stddev": 130.9878593,
            "variance": 17157.81928
          },
          {
            "average": 690.1634843,
            "count": 5380016,
            "maximum": 697.2146788,
            "minimum": 680.0146788,
            "name": "Z",
            "position": 2,
            "stddev": 3.356241394,
            "variance": 11.2643563
          },
          {
            "average": 51223.50793,
            "count": 5380016,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 6979.468567,
            "variance": 48712981.48
          },
          {
            "average": 1.000033457,
            "count": 5380016,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005784119329,
            "variance": 3.345603641e-05
          },
          {
            "average": 1.000066914,
            "count": 5380016,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.008179843156,
            "variance": 6.690983405e-05
          },
          {
            "average": 0.5087574089,
            "count": 5380016,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999233484,
            "variance": 0.2499233542
          },
          {
            "average": 0.0004464670737,
            "count": 5380016,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02112505204,
            "variance": 0.0004462678238
          },
          {
            "average": 1.245604102,
            "count": 5380016,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4360338279,
            "variance": 0.1901254991
          },
          {
            "average": -3.114700624,
            "count": 5380016,
            "maximum": 21.41399956,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.66706272,
            "variance": 113.7862271
          },
          {
            "average": 0.4877881404,
            "count": 5380016,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998508947,
            "variance": 0.2498509169
          },
          {
            "average": 416.4956214,
            "count": 5380016,
            "maximum": 635,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 109.6354328,
            "variance": 12019.92812
          },
          {
            "average": 249236474.5,
            "count": 5380016,
            "maximum": 249243721.2,
            "minimum": 249234424,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3404.398964,
            "variance": 11589932.31
          },
          {
            "average": 0.4877881404,
            "count": 5380016,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998508947,
            "variance": 0.2498509169
          },
          {
            "average": 0,
            "count": 5380016,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5380016,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5380016,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2201753675,
            "count": 5380016,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4143648235,
            "variance": 0.171698207
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93085.96688,
          2021861.864,
          680.0146788,
          93574.52688,
          2022342.624,
          697.2146788
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93085.96688389723,
                2021861.8643590254,
                680.0146788085539
              ],
              [
                93085.96688389723,
                2022342.6243590252,
                680.0146788085539
              ],
              [
                93574.52688389723,
                2022342.6243590252,
                697.2146788085539
              ],
              [
                93574.52688389723,
                2021861.8643590254,
                697.2146788085539
              ],
              [
                93085.96688389723,
                2021861.8643590254,
                680.0146788085539
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:08:41+00:00",
        "end_time": "2019-08-07T17:33:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000347.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000347.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000347.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000347.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7788442,
            68.14342549,
            680.0146788,
            -151.7668096,
            68.14791824,
            697.2146788
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77884415589318,
                  68.14357359926414,
                  680.0146788085539
                ],
                [
                  -151.77846055922492,
                  68.14791824337628,
                  680.0146788085539
                ],
                [
                  -151.76680961463532,
                  68.14777010770345,
                  697.2146788085539
                ],
                [
                  -151.767195220065,
                  68.14342549149124,
                  697.2146788085539
                ],
                [
                  -151.77884415589318,
                  68.14357359926414,
                  680.0146788085539
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000347.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000347.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:08:41Z",
            "pc:count": 5380016,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93328.86682,
                "count": 5380016,
                "maximum": 93574.52688,
                "minimum": 93085.96688,
                "name": "X",
                "position": 0,
                "stddev": 134.5622934,
                "variance": 18107.01081
              },
              {
                "average": 2022101.887,
                "count": 5380016,
                "maximum": 2022342.624,
                "minimum": 2021861.864,
                "name": "Y",
                "position": 1,
                "stddev": 130.9878593,
                "variance": 17157.81928
              },
              {
                "average": 690.1634843,
                "count": 5380016,
                "maximum": 697.2146788,
                "minimum": 680.0146788,
                "name": "Z",
                "position": 2,
                "stddev": 3.356241394,
                "variance": 11.2643563
              },
              {
                "average": 51223.50793,
                "count": 5380016,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 6979.468567,
                "variance": 48712981.48
              },
              {
                "average": 1.000033457,
                "count": 5380016,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005784119329,
                "variance": 3.345603641e-05
              },
              {
                "average": 1.000066914,
                "count": 5380016,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.008179843156,
                "variance": 6.690983405e-05
              },
              {
                "average": 0.5087574089,
                "count": 5380016,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999233484,
                "variance": 0.2499233542
              },
              {
                "average": 0.0004464670737,
                "count": 5380016,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02112505204,
                "variance": 0.0004462678238
              },
              {
                "average": 1.245604102,
                "count": 5380016,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4360338279,
                "variance": 0.1901254991
              },
              {
                "average": -3.114700624,
                "count": 5380016,
                "maximum": 21.41399956,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.66706272,
                "variance": 113.7862271
              },
              {
                "average": 0.4877881404,
                "count": 5380016,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998508947,
                "variance": 0.2498509169
              },
              {
                "average": 416.4956214,
                "count": 5380016,
                "maximum": 635,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 109.6354328,
                "variance": 12019.92812
              },
              {
                "average": 249236474.5,
                "count": 5380016,
                "maximum": 249243721.2,
                "minimum": 249234424,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3404.398964,
                "variance": 11589932.31
              },
              {
                "average": 0.4877881404,
                "count": 5380016,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998508947,
                "variance": 0.2498509169
              },
              {
                "average": 0,
                "count": 5380016,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5380016,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5380016,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2201753675,
                "count": 5380016,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4143648235,
                "variance": 0.171698207
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93085.96688,
              2021861.864,
              680.0146788,
              93574.52688,
              2022342.624,
              697.2146788
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93085.96688389723,
                    2021861.8643590254,
                    680.0146788085539
                  ],
                  [
                    93085.96688389723,
                    2022342.6243590252,
                    680.0146788085539
                  ],
                  [
                    93574.52688389723,
                    2022342.6243590252,
                    697.2146788085539
                  ],
                  [
                    93574.52688389723,
                    2021861.8643590254,
                    697.2146788085539
                  ],
                  [
                    93085.96688389723,
                    2021861.8643590254,
                    680.0146788085539
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:08:41+00:00",
            "end_time": "2019-08-07T17:33:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000405.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71347427343696,
              68.1524640080283,
              641.5945128634081
            ],
            [
              -151.71307925215356,
              68.15680864696712,
              641.5945128634081
            ],
            [
              -151.70142649039485,
              68.15665618466626,
              657.454512863408
            ],
            [
              -151.7018235212603,
              68.15231157445517,
              657.454512863408
            ],
            [
              -151.71347427343696,
              68.1524640080283,
              641.5945128634081
            ]
          ]
        ]
      },
      "bbox": [
        -151.7134743,
        68.15231157,
        641.5945129,
        -151.7014265,
        68.15680865,
        657.4545129
      ],
      "properties": {
        "datetime": "2019-08-07T19:52:10Z",
        "pc:count": 4671861,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96038.92747,
            "count": 4671861,
            "maximum": 96279.10747,
            "minimum": 95790.62747,
            "name": "X",
            "position": 0,
            "stddev": 130.504452,
            "variance": 17031.41199
          },
          {
            "average": 2023178.625,
            "count": 4671861,
            "maximum": 2023418.233,
            "minimum": 2022937.473,
            "name": "Y",
            "position": 1,
            "stddev": 130.0321096,
            "variance": 16908.34952
          },
          {
            "average": 648.2513708,
            "count": 4671861,
            "maximum": 657.4545129,
            "minimum": 641.5945129,
            "name": "Z",
            "position": 2,
            "stddev": 3.267363861,
            "variance": 10.6756666
          },
          {
            "average": 50190.09485,
            "count": 4671861,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 7259.725113,
            "variance": 52703608.71
          },
          {
            "average": 1.000041739,
            "count": 4671861,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006460458365,
            "variance": 4.173752228e-05
          },
          {
            "average": 1.00008305,
            "count": 4671861,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009112822642,
            "variance": 8.30435365e-05
          },
          {
            "average": 0.508604601,
            "count": 4671861,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999260089,
            "variance": 0.2499260143
          },
          {
            "average": 0.0004786101299,
            "count": 4671861,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0218719264,
            "variance": 0.0004783811646
          },
          {
            "average": 1.25361371,
            "count": 4671861,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.441312054,
            "variance": 0.194756329
          },
          {
            "average": -1.46629534,
            "count": 4671861,
            "maximum": 16.62599945,
            "minimum": -20.99399948,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.44623002,
            "variance": 131.0161816
          },
          {
            "average": 0.5090183548,
            "count": 4671861,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999187162,
            "variance": 0.2499187228
          },
          {
            "average": 415.4897213,
            "count": 4671861,
            "maximum": 632,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 116.4244423,
            "variance": 13554.65076
          },
          {
            "average": 249235454.7,
            "count": 4671861,
            "maximum": 249242730.6,
            "minimum": 249233132.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3822.890193,
            "variance": 14614489.43
          },
          {
            "average": 0.5090183548,
            "count": 4671861,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999187162,
            "variance": 0.2499187228
          },
          {
            "average": 0,
            "count": 4671861,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4671861,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4671861,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2468832014,
            "count": 4671861,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4311982445,
            "variance": 0.185931926
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95790.62747,
          2022937.473,
          641.5945129,
          96279.10747,
          2023418.233,
          657.4545129
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95790.62746539102,
                2022937.4728228687,
                641.5945128634081
              ],
              [
                95790.62746539102,
                2023418.2328228685,
                641.5945128634081
              ],
              [
                96279.10746539103,
                2023418.2328228685,
                657.454512863408
              ],
              [
                96279.10746539103,
                2022937.4728228687,
                657.454512863408
              ],
              [
                95790.62746539102,
                2022937.4728228687,
                641.5945128634081
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:52:10+00:00",
        "end_time": "2019-08-07T17:12:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000405.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000405.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000405.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000405.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7134743,
            68.15231157,
            641.5945129,
            -151.7014265,
            68.15680865,
            657.4545129
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71347427343696,
                  68.1524640080283,
                  641.5945128634081
                ],
                [
                  -151.71307925215356,
                  68.15680864696712,
                  641.5945128634081
                ],
                [
                  -151.70142649039485,
                  68.15665618466626,
                  657.454512863408
                ],
                [
                  -151.7018235212603,
                  68.15231157445517,
                  657.454512863408
                ],
                [
                  -151.71347427343696,
                  68.1524640080283,
                  641.5945128634081
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000405.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000405.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:52:10Z",
            "pc:count": 4671861,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96038.92747,
                "count": 4671861,
                "maximum": 96279.10747,
                "minimum": 95790.62747,
                "name": "X",
                "position": 0,
                "stddev": 130.504452,
                "variance": 17031.41199
              },
              {
                "average": 2023178.625,
                "count": 4671861,
                "maximum": 2023418.233,
                "minimum": 2022937.473,
                "name": "Y",
                "position": 1,
                "stddev": 130.0321096,
                "variance": 16908.34952
              },
              {
                "average": 648.2513708,
                "count": 4671861,
                "maximum": 657.4545129,
                "minimum": 641.5945129,
                "name": "Z",
                "position": 2,
                "stddev": 3.267363861,
                "variance": 10.6756666
              },
              {
                "average": 50190.09485,
                "count": 4671861,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 7259.725113,
                "variance": 52703608.71
              },
              {
                "average": 1.000041739,
                "count": 4671861,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006460458365,
                "variance": 4.173752228e-05
              },
              {
                "average": 1.00008305,
                "count": 4671861,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009112822642,
                "variance": 8.30435365e-05
              },
              {
                "average": 0.508604601,
                "count": 4671861,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999260089,
                "variance": 0.2499260143
              },
              {
                "average": 0.0004786101299,
                "count": 4671861,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0218719264,
                "variance": 0.0004783811646
              },
              {
                "average": 1.25361371,
                "count": 4671861,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.441312054,
                "variance": 0.194756329
              },
              {
                "average": -1.46629534,
                "count": 4671861,
                "maximum": 16.62599945,
                "minimum": -20.99399948,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.44623002,
                "variance": 131.0161816
              },
              {
                "average": 0.5090183548,
                "count": 4671861,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999187162,
                "variance": 0.2499187228
              },
              {
                "average": 415.4897213,
                "count": 4671861,
                "maximum": 632,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 116.4244423,
                "variance": 13554.65076
              },
              {
                "average": 249235454.7,
                "count": 4671861,
                "maximum": 249242730.6,
                "minimum": 249233132.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3822.890193,
                "variance": 14614489.43
              },
              {
                "average": 0.5090183548,
                "count": 4671861,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999187162,
                "variance": 0.2499187228
              },
              {
                "average": 0,
                "count": 4671861,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4671861,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4671861,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2468832014,
                "count": 4671861,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4311982445,
                "variance": 0.185931926
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95790.62747,
              2022937.473,
              641.5945129,
              96279.10747,
              2023418.233,
              657.4545129
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95790.62746539102,
                    2022937.4728228687,
                    641.5945128634081
                  ],
                  [
                    95790.62746539102,
                    2023418.2328228685,
                    641.5945128634081
                  ],
                  [
                    96279.10746539103,
                    2023418.2328228685,
                    657.454512863408
                  ],
                  [
                    96279.10746539103,
                    2022937.4728228687,
                    657.454512863408
                  ],
                  [
                    95790.62746539102,
                    2022937.4728228687,
                    641.5945128634081
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:52:10+00:00",
            "end_time": "2019-08-07T17:12:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000276.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7009567511011,
              68.13208882666817,
              714.469508501993
            ],
            [
              -151.70055985654585,
              68.13643347822291,
              714.469508501993
            ],
            [
              -151.68891803103404,
              68.13628021425171,
              783.6295085019931
            ],
            [
              -151.68931693178837,
              68.13193559154597,
              783.6295085019931
            ],
            [
              -151.7009567511011,
              68.13208882666817,
              714.469508501993
            ]
          ]
        ]
      },
      "bbox": [
        -151.7009568,
        68.13193559,
        714.4695085,
        -151.688918,
        68.13643348,
        783.6295085
      ],
      "properties": {
        "datetime": "2019-08-07T19:34:49Z",
        "pc:count": 5224398,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96638.40199,
            "count": 5224398,
            "maximum": 96881.23513,
            "minimum": 96392.81513,
            "name": "X",
            "position": 0,
            "stddev": 130.486899,
            "variance": 17026.83082
          },
          {
            "average": 2020943.655,
            "count": 5224398,
            "maximum": 2021184.329,
            "minimum": 2020703.529,
            "name": "Y",
            "position": 1,
            "stddev": 131.7821255,
            "variance": 17366.5286
          },
          {
            "average": 743.3682501,
            "count": 5224398,
            "maximum": 783.6295085,
            "minimum": 714.4695085,
            "name": "Z",
            "position": 2,
            "stddev": 16.27621458,
            "variance": 264.9151612
          },
          {
            "average": 48986.16503,
            "count": 5224398,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8182.371572,
            "variance": 66951204.55
          },
          {
            "average": 1.00040866,
            "count": 5224398,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0203809555,
            "variance": 0.000415383347
          },
          {
            "average": 1.000818085,
            "count": 5224398,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0289497465,
            "variance": 0.0008380878226
          },
          {
            "average": 0.4969931464,
            "count": 5224398,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999910066,
            "variance": 0.2499910067
          },
          {
            "average": 0.0004448359409,
            "count": 5224398,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02108644463,
            "variance": 0.000444638147
          },
          {
            "average": 1.236511269,
            "count": 5224398,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5045682857,
            "variance": 0.254589155
          },
          {
            "average": -0.3934134646,
            "count": 5224398,
            "maximum": 21.54599953,
            "minimum": -20.90999985,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.15881874,
            "variance": 124.5192356
          },
          {
            "average": 0.4824012259,
            "count": 5224398,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499690235,
            "variance": 0.2496903309
          },
          {
            "average": 423.2441451,
            "count": 5224398,
            "maximum": 629,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 121.2865908,
            "variance": 14710.43711
          },
          {
            "average": 249235307.4,
            "count": 5224398,
            "maximum": 249241689.2,
            "minimum": 249232941.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3605.323278,
            "variance": 12998355.94
          },
          {
            "average": 0.4824012259,
            "count": 5224398,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499690235,
            "variance": 0.2496903309
          },
          {
            "average": 0,
            "count": 5224398,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5224398,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5224398,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1815457015,
            "count": 5224398,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3854696982,
            "variance": 0.1485868882
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96392.81513,
          2020703.529,
          714.4695085,
          96881.23513,
          2021184.329,
          783.6295085
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96392.81513371792,
                2020703.5286859828,
                714.469508501993
              ],
              [
                96392.81513371792,
                2021184.3286859826,
                714.469508501993
              ],
              [
                96881.23513371793,
                2021184.3286859826,
                783.6295085019931
              ],
              [
                96881.23513371793,
                2020703.5286859828,
                783.6295085019931
              ],
              [
                96392.81513371792,
                2020703.5286859828,
                714.469508501993
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:34:49+00:00",
        "end_time": "2019-08-07T17:09:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000276.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000276.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000276.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000276.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7009568,
            68.13193559,
            714.4695085,
            -151.688918,
            68.13643348,
            783.6295085
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7009567511011,
                  68.13208882666817,
                  714.469508501993
                ],
                [
                  -151.70055985654585,
                  68.13643347822291,
                  714.469508501993
                ],
                [
                  -151.68891803103404,
                  68.13628021425171,
                  783.6295085019931
                ],
                [
                  -151.68931693178837,
                  68.13193559154597,
                  783.6295085019931
                ],
                [
                  -151.7009567511011,
                  68.13208882666817,
                  714.469508501993
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000276.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000276.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:34:49Z",
            "pc:count": 5224398,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96638.40199,
                "count": 5224398,
                "maximum": 96881.23513,
                "minimum": 96392.81513,
                "name": "X",
                "position": 0,
                "stddev": 130.486899,
                "variance": 17026.83082
              },
              {
                "average": 2020943.655,
                "count": 5224398,
                "maximum": 2021184.329,
                "minimum": 2020703.529,
                "name": "Y",
                "position": 1,
                "stddev": 131.7821255,
                "variance": 17366.5286
              },
              {
                "average": 743.3682501,
                "count": 5224398,
                "maximum": 783.6295085,
                "minimum": 714.4695085,
                "name": "Z",
                "position": 2,
                "stddev": 16.27621458,
                "variance": 264.9151612
              },
              {
                "average": 48986.16503,
                "count": 5224398,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8182.371572,
                "variance": 66951204.55
              },
              {
                "average": 1.00040866,
                "count": 5224398,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0203809555,
                "variance": 0.000415383347
              },
              {
                "average": 1.000818085,
                "count": 5224398,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0289497465,
                "variance": 0.0008380878226
              },
              {
                "average": 0.4969931464,
                "count": 5224398,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999910066,
                "variance": 0.2499910067
              },
              {
                "average": 0.0004448359409,
                "count": 5224398,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02108644463,
                "variance": 0.000444638147
              },
              {
                "average": 1.236511269,
                "count": 5224398,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5045682857,
                "variance": 0.254589155
              },
              {
                "average": -0.3934134646,
                "count": 5224398,
                "maximum": 21.54599953,
                "minimum": -20.90999985,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.15881874,
                "variance": 124.5192356
              },
              {
                "average": 0.4824012259,
                "count": 5224398,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499690235,
                "variance": 0.2496903309
              },
              {
                "average": 423.2441451,
                "count": 5224398,
                "maximum": 629,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 121.2865908,
                "variance": 14710.43711
              },
              {
                "average": 249235307.4,
                "count": 5224398,
                "maximum": 249241689.2,
                "minimum": 249232941.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3605.323278,
                "variance": 12998355.94
              },
              {
                "average": 0.4824012259,
                "count": 5224398,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499690235,
                "variance": 0.2496903309
              },
              {
                "average": 0,
                "count": 5224398,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5224398,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5224398,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1815457015,
                "count": 5224398,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3854696982,
                "variance": 0.1485868882
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96392.81513,
              2020703.529,
              714.4695085,
              96881.23513,
              2021184.329,
              783.6295085
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96392.81513371792,
                    2020703.5286859828,
                    714.469508501993
                  ],
                  [
                    96392.81513371792,
                    2021184.3286859826,
                    714.469508501993
                  ],
                  [
                    96881.23513371793,
                    2021184.3286859826,
                    783.6295085019931
                  ],
                  [
                    96881.23513371793,
                    2020703.5286859828,
                    783.6295085019931
                  ],
                  [
                    96392.81513371792,
                    2020703.5286859828,
                    714.469508501993
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:34:49+00:00",
            "end_time": "2019-08-07T17:09:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000353.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71286040022463,
              68.14426892966392,
              645.6415340137519
            ],
            [
              -151.71246541803532,
              68.14861325738387,
              645.6415340137519
            ],
            [
              -151.70082027025242,
              68.14846080901778,
              691.061534013752
            ],
            [
              -151.7012172599714,
              68.14411651000894,
              691.061534013752
            ],
            [
              -151.71286040022463,
              68.14426892966392,
              645.6415340137519
            ]
          ]
        ]
      },
      "bbox": [
        -151.7128604,
        68.14411651,
        645.641534,
        -151.7008203,
        68.14861326,
        691.061534
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:06Z",
        "pc:count": 4486630,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96104.46251,
            "count": 4486630,
            "maximum": 96335.86122,
            "minimum": 95847.54122,
            "name": "X",
            "position": 0,
            "stddev": 127.0208159,
            "variance": 16134.28768
          },
          {
            "average": 2022264.962,
            "count": 4486630,
            "maximum": 2022513.319,
            "minimum": 2022032.579,
            "name": "Y",
            "position": 1,
            "stddev": 128.8313738,
            "variance": 16597.52288
          },
          {
            "average": 675.0002715,
            "count": 4486630,
            "maximum": 691.061534,
            "minimum": 645.641534,
            "name": "Z",
            "position": 2,
            "stddev": 8.836944005,
            "variance": 78.09157936
          },
          {
            "average": 51616.93481,
            "count": 4486630,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 8655.546367,
            "variance": 74918482.9
          },
          {
            "average": 1.000168724,
            "count": 4486630,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01298826734,
            "variance": 0.0001686950885
          },
          {
            "average": 1.000337224,
            "count": 4486630,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01836056937,
            "variance": 0.0003371105077
          },
          {
            "average": 0.495631465,
            "count": 4486630,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999809713,
            "variance": 0.2499809716
          },
          {
            "average": 0.000487448263,
            "count": 4486630,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02207285133,
            "variance": 0.0004872107657
          },
          {
            "average": 1.412178629,
            "count": 4486630,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.101706261,
            "variance": 1.213756686
          },
          {
            "average": 4.689118499,
            "count": 4486630,
            "maximum": 21.60000038,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78110482,
            "variance": 116.2322212
          },
          {
            "average": 0.5153937365,
            "count": 4486630,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997630324,
            "variance": 0.2497630885
          },
          {
            "average": 418.6094351,
            "count": 4486630,
            "maximum": 631,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.2000251,
            "variance": 13971.24593
          },
          {
            "average": 249235477.6,
            "count": 4486630,
            "maximum": 249242366,
            "minimum": 249233115,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3750.180034,
            "variance": 14063850.29
          },
          {
            "average": 0.5153937365,
            "count": 4486630,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997630324,
            "variance": 0.2497630885
          },
          {
            "average": 0,
            "count": 4486630,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4486630,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4486630,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.249312513,
            "count": 4486630,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4326151009,
            "variance": 0.1871558256
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95847.54122,
          2022032.579,
          645.641534,
          96335.86122,
          2022513.319,
          691.061534
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95847.5412202462,
                2022032.578824686,
                645.6415340137519
              ],
              [
                95847.5412202462,
                2022513.318824686,
                645.6415340137519
              ],
              [
                96335.86122024621,
                2022513.318824686,
                691.061534013752
              ],
              [
                96335.86122024621,
                2022032.578824686,
                691.061534013752
              ],
              [
                95847.5412202462,
                2022032.578824686,
                645.6415340137519
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:06+00:00",
        "end_time": "2019-08-07T17:11:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000353.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000353.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000353.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000353.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7128604,
            68.14411651,
            645.641534,
            -151.7008203,
            68.14861326,
            691.061534
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71286040022463,
                  68.14426892966392,
                  645.6415340137519
                ],
                [
                  -151.71246541803532,
                  68.14861325738387,
                  645.6415340137519
                ],
                [
                  -151.70082027025242,
                  68.14846080901778,
                  691.061534013752
                ],
                [
                  -151.7012172599714,
                  68.14411651000894,
                  691.061534013752
                ],
                [
                  -151.71286040022463,
                  68.14426892966392,
                  645.6415340137519
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000353.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000353.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:06Z",
            "pc:count": 4486630,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96104.46251,
                "count": 4486630,
                "maximum": 96335.86122,
                "minimum": 95847.54122,
                "name": "X",
                "position": 0,
                "stddev": 127.0208159,
                "variance": 16134.28768
              },
              {
                "average": 2022264.962,
                "count": 4486630,
                "maximum": 2022513.319,
                "minimum": 2022032.579,
                "name": "Y",
                "position": 1,
                "stddev": 128.8313738,
                "variance": 16597.52288
              },
              {
                "average": 675.0002715,
                "count": 4486630,
                "maximum": 691.061534,
                "minimum": 645.641534,
                "name": "Z",
                "position": 2,
                "stddev": 8.836944005,
                "variance": 78.09157936
              },
              {
                "average": 51616.93481,
                "count": 4486630,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 8655.546367,
                "variance": 74918482.9
              },
              {
                "average": 1.000168724,
                "count": 4486630,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01298826734,
                "variance": 0.0001686950885
              },
              {
                "average": 1.000337224,
                "count": 4486630,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01836056937,
                "variance": 0.0003371105077
              },
              {
                "average": 0.495631465,
                "count": 4486630,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999809713,
                "variance": 0.2499809716
              },
              {
                "average": 0.000487448263,
                "count": 4486630,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02207285133,
                "variance": 0.0004872107657
              },
              {
                "average": 1.412178629,
                "count": 4486630,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.101706261,
                "variance": 1.213756686
              },
              {
                "average": 4.689118499,
                "count": 4486630,
                "maximum": 21.60000038,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78110482,
                "variance": 116.2322212
              },
              {
                "average": 0.5153937365,
                "count": 4486630,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997630324,
                "variance": 0.2497630885
              },
              {
                "average": 418.6094351,
                "count": 4486630,
                "maximum": 631,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.2000251,
                "variance": 13971.24593
              },
              {
                "average": 249235477.6,
                "count": 4486630,
                "maximum": 249242366,
                "minimum": 249233115,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3750.180034,
                "variance": 14063850.29
              },
              {
                "average": 0.5153937365,
                "count": 4486630,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997630324,
                "variance": 0.2497630885
              },
              {
                "average": 0,
                "count": 4486630,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4486630,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4486630,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.249312513,
                "count": 4486630,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4326151009,
                "variance": 0.1871558256
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95847.54122,
              2022032.579,
              645.641534,
              96335.86122,
              2022513.319,
              691.061534
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95847.5412202462,
                    2022032.578824686,
                    645.6415340137519
                  ],
                  [
                    95847.5412202462,
                    2022513.318824686,
                    645.6415340137519
                  ],
                  [
                    96335.86122024621,
                    2022513.318824686,
                    691.061534013752
                  ],
                  [
                    96335.86122024621,
                    2022032.578824686,
                    691.061534013752
                  ],
                  [
                    95847.5412202462,
                    2022032.578824686,
                    645.6415340137519
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:06+00:00",
            "end_time": "2019-08-07T17:11:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000400.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76847850622417,
              68.15188616360385,
              683.2582441063073
            ],
            [
              -151.7680929766901,
              68.15623109665206,
              683.2582441063073
            ],
            [
              -151.75643919799853,
              68.15608227932516,
              786.1982441063074
            ],
            [
              -151.75682673749824,
              68.15173737431898,
              786.1982441063074
            ],
            [
              -151.76847850622417,
              68.15188616360385,
              683.2582441063073
            ]
          ]
        ]
      },
      "bbox": [
        -151.7684785,
        68.15173737,
        683.2582441,
        -151.7564392,
        68.1562311,
        786.1982441
      ],
      "properties": {
        "datetime": "2019-08-18T19:03:13Z",
        "pc:count": 5103368,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93731.63537,
            "count": 5103368,
            "maximum": 93977.85105,
            "minimum": 93489.33105,
            "name": "X",
            "position": 0,
            "stddev": 131.3189117,
            "variance": 17244.65657
          },
          {
            "average": 2023037.633,
            "count": 5103368,
            "maximum": 2023276.001,
            "minimum": 2022795.221,
            "name": "Y",
            "position": 1,
            "stddev": 132.6708387,
            "variance": 17601.55143
          },
          {
            "average": 721.1361026,
            "count": 5103368,
            "maximum": 786.1982441,
            "minimum": 683.2582441,
            "name": "Z",
            "position": 2,
            "stddev": 18.6491952,
            "variance": 347.7924816
          },
          {
            "average": 50416.60009,
            "count": 5103368,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6311.38868,
            "variance": 39833627.08
          },
          {
            "average": 1.00011365,
            "count": 5103368,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0106600911,
            "variance": 0.0001136375422
          },
          {
            "average": 1.000227301,
            "count": 5103368,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01507478861,
            "variance": 0.0002272492515
          },
          {
            "average": 0.4962034876,
            "count": 5103368,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999856353,
            "variance": 0.2499856355
          },
          {
            "average": 0.000465966789,
            "count": 5103368,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02158123618,
            "variance": 0.0004657497552
          },
          {
            "average": 1.240929715,
            "count": 5103368,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4767779457,
            "variance": 0.2273172095
          },
          {
            "average": -0.2267215846,
            "count": 5103368,
            "maximum": 21.58799934,
            "minimum": -21.06599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.30093983,
            "variance": 127.711241
          },
          {
            "average": 0.4865116527,
            "count": 5103368,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998180803,
            "variance": 0.2498181134
          },
          {
            "average": 429.3793628,
            "count": 5103368,
            "maximum": 723,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 120.7040423,
            "variance": 14569.46582
          },
          {
            "average": 249244281.3,
            "count": 5103368,
            "maximum": 250190193.5,
            "minimum": 249234222.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 84764.81452,
            "variance": 7185073781
          },
          {
            "average": 0.4865116527,
            "count": 5103368,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998180803,
            "variance": 0.2498181134
          },
          {
            "average": 0,
            "count": 5103368,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5103368,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5103368,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2057860613,
            "count": 5103368,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4042748945,
            "variance": 0.1634381903
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93489.33105,
          2022795.221,
          683.2582441,
          93977.85105,
          2023276.001,
          786.1982441
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93489.3310525116,
                2022795.2206753003,
                683.2582441063073
              ],
              [
                93489.3310525116,
                2023276.0006753001,
                683.2582441063073
              ],
              [
                93977.85105251159,
                2023276.0006753001,
                786.1982441063074
              ],
              [
                93977.85105251159,
                2022795.2206753003,
                786.1982441063074
              ],
              [
                93489.3310525116,
                2022795.2206753003,
                683.2582441063073
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-18T19:03:13+00:00",
        "end_time": "2019-08-07T17:30:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000400.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000400.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000400.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000400.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7684785,
            68.15173737,
            683.2582441,
            -151.7564392,
            68.1562311,
            786.1982441
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76847850622417,
                  68.15188616360385,
                  683.2582441063073
                ],
                [
                  -151.7680929766901,
                  68.15623109665206,
                  683.2582441063073
                ],
                [
                  -151.75643919799853,
                  68.15608227932516,
                  786.1982441063074
                ],
                [
                  -151.75682673749824,
                  68.15173737431898,
                  786.1982441063074
                ],
                [
                  -151.76847850622417,
                  68.15188616360385,
                  683.2582441063073
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000400.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000400.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-18T19:03:13Z",
            "pc:count": 5103368,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93731.63537,
                "count": 5103368,
                "maximum": 93977.85105,
                "minimum": 93489.33105,
                "name": "X",
                "position": 0,
                "stddev": 131.3189117,
                "variance": 17244.65657
              },
              {
                "average": 2023037.633,
                "count": 5103368,
                "maximum": 2023276.001,
                "minimum": 2022795.221,
                "name": "Y",
                "position": 1,
                "stddev": 132.6708387,
                "variance": 17601.55143
              },
              {
                "average": 721.1361026,
                "count": 5103368,
                "maximum": 786.1982441,
                "minimum": 683.2582441,
                "name": "Z",
                "position": 2,
                "stddev": 18.6491952,
                "variance": 347.7924816
              },
              {
                "average": 50416.60009,
                "count": 5103368,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6311.38868,
                "variance": 39833627.08
              },
              {
                "average": 1.00011365,
                "count": 5103368,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0106600911,
                "variance": 0.0001136375422
              },
              {
                "average": 1.000227301,
                "count": 5103368,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01507478861,
                "variance": 0.0002272492515
              },
              {
                "average": 0.4962034876,
                "count": 5103368,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999856353,
                "variance": 0.2499856355
              },
              {
                "average": 0.000465966789,
                "count": 5103368,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02158123618,
                "variance": 0.0004657497552
              },
              {
                "average": 1.240929715,
                "count": 5103368,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4767779457,
                "variance": 0.2273172095
              },
              {
                "average": -0.2267215846,
                "count": 5103368,
                "maximum": 21.58799934,
                "minimum": -21.06599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.30093983,
                "variance": 127.711241
              },
              {
                "average": 0.4865116527,
                "count": 5103368,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998180803,
                "variance": 0.2498181134
              },
              {
                "average": 429.3793628,
                "count": 5103368,
                "maximum": 723,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 120.7040423,
                "variance": 14569.46582
              },
              {
                "average": 249244281.3,
                "count": 5103368,
                "maximum": 250190193.5,
                "minimum": 249234222.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 84764.81452,
                "variance": 7185073781
              },
              {
                "average": 0.4865116527,
                "count": 5103368,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998180803,
                "variance": 0.2498181134
              },
              {
                "average": 0,
                "count": 5103368,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5103368,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5103368,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2057860613,
                "count": 5103368,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4042748945,
                "variance": 0.1634381903
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93489.33105,
              2022795.221,
              683.2582441,
              93977.85105,
              2023276.001,
              786.1982441
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93489.3310525116,
                    2022795.2206753003,
                    683.2582441063073
                  ],
                  [
                    93489.3310525116,
                    2023276.0006753001,
                    683.2582441063073
                  ],
                  [
                    93977.85105251159,
                    2023276.0006753001,
                    786.1982441063074
                  ],
                  [
                    93977.85105251159,
                    2022795.2206753003,
                    786.1982441063074
                  ],
                  [
                    93489.3310525116,
                    2022795.2206753003,
                    683.2582441063073
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-18T19:03:13+00:00",
            "end_time": "2019-08-07T17:30:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000325.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7345490782213,
              68.13994201095366,
              640.6783648147697
            ],
            [
              -151.7341578422931,
              68.14428704220543,
              640.6783648147697
            ],
            [
              -151.72251170375623,
              68.14413600047942,
              1505.3783648147696
            ],
            [
              -151.72290494744166,
              68.13979099767215,
              1505.3783648147696
            ],
            [
              -151.7345490782213,
              68.13994201095366,
              640.6783648147697
            ]
          ]
        ]
      },
      "bbox": [
        -151.7345491,
        68.139791,
        640.6783648,
        -151.7225117,
        68.14428704,
        1505.378365
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:43Z",
        "pc:count": 4090447,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95201.49922,
            "count": 4090447,
            "maximum": 95443.7454,
            "minimum": 94955.3054,
            "name": "X",
            "position": 0,
            "stddev": 134.6989646,
            "variance": 18143.81106
          },
          {
            "average": 2021762.184,
            "count": 4090447,
            "maximum": 2022003.986,
            "minimum": 2021523.166,
            "name": "Y",
            "position": 1,
            "stddev": 131.9746671,
            "variance": 17417.31275
          },
          {
            "average": 645.5367233,
            "count": 4090447,
            "maximum": 1505.378365,
            "minimum": 640.6783648,
            "name": "Z",
            "position": 2,
            "stddev": 2.340437884,
            "variance": 5.477649487
          },
          {
            "average": 41253.94435,
            "count": 4090447,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13027.38479,
            "variance": 169712754.6
          },
          {
            "average": 1.027215607,
            "count": 4090447,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.163768493,
            "variance": 0.0268201193
          },
          {
            "average": 1.054459085,
            "count": 4090447,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2291960845,
            "variance": 0.05253084513
          },
          {
            "average": 0.4913040066,
            "count": 4090447,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999244351,
            "variance": 0.2499244408
          },
          {
            "average": 0.0005006787767,
            "count": 4090447,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02237025301,
            "variance": 0.0005004282198
          },
          {
            "average": 1.662490188,
            "count": 4090447,
            "maximum": 17,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.1456594,
            "variance": 1.312535461
          },
          {
            "average": 0.7350822969,
            "count": 4090447,
            "maximum": 21.62400055,
            "minimum": -21.34799957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12494898,
            "variance": 123.7644899
          },
          {
            "average": 0.4799059858,
            "count": 4090447,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995961285,
            "variance": 0.2495962916
          },
          {
            "average": 418.8673548,
            "count": 4090447,
            "maximum": 632,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 115.903917,
            "variance": 13433.71797
          },
          {
            "average": 249235786,
            "count": 4090447,
            "maximum": 249242703,
            "minimum": 249233603.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3549.848943,
            "variance": 12601427.52
          },
          {
            "average": 0.4799059858,
            "count": 4090447,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995961285,
            "variance": 0.2495962916
          },
          {
            "average": 0,
            "count": 4090447,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4090447,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4090447,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2059268828,
            "count": 4090447,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4043773507,
            "variance": 0.1635210417
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94955.3054,
          2021523.166,
          640.6783648,
          95443.7454,
          2022003.986,
          1505.378365
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94955.30539910184,
                2021523.1663959401,
                640.6783648147697
              ],
              [
                94955.30539910184,
                2022003.98639594,
                640.6783648147697
              ],
              [
                95443.74539910184,
                2022003.98639594,
                1505.3783648147696
              ],
              [
                95443.74539910184,
                2021523.1663959401,
                1505.3783648147696
              ],
              [
                94955.30539910184,
                2021523.1663959401,
                640.6783648147697
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:43+00:00",
        "end_time": "2019-08-07T17:20:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000325.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000325.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000325.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000325.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7345491,
            68.139791,
            640.6783648,
            -151.7225117,
            68.14428704,
            1505.378365
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7345490782213,
                  68.13994201095366,
                  640.6783648147697
                ],
                [
                  -151.7341578422931,
                  68.14428704220543,
                  640.6783648147697
                ],
                [
                  -151.72251170375623,
                  68.14413600047942,
                  1505.3783648147696
                ],
                [
                  -151.72290494744166,
                  68.13979099767215,
                  1505.3783648147696
                ],
                [
                  -151.7345490782213,
                  68.13994201095366,
                  640.6783648147697
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000325.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000325.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:43Z",
            "pc:count": 4090447,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95201.49922,
                "count": 4090447,
                "maximum": 95443.7454,
                "minimum": 94955.3054,
                "name": "X",
                "position": 0,
                "stddev": 134.6989646,
                "variance": 18143.81106
              },
              {
                "average": 2021762.184,
                "count": 4090447,
                "maximum": 2022003.986,
                "minimum": 2021523.166,
                "name": "Y",
                "position": 1,
                "stddev": 131.9746671,
                "variance": 17417.31275
              },
              {
                "average": 645.5367233,
                "count": 4090447,
                "maximum": 1505.378365,
                "minimum": 640.6783648,
                "name": "Z",
                "position": 2,
                "stddev": 2.340437884,
                "variance": 5.477649487
              },
              {
                "average": 41253.94435,
                "count": 4090447,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13027.38479,
                "variance": 169712754.6
              },
              {
                "average": 1.027215607,
                "count": 4090447,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.163768493,
                "variance": 0.0268201193
              },
              {
                "average": 1.054459085,
                "count": 4090447,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2291960845,
                "variance": 0.05253084513
              },
              {
                "average": 0.4913040066,
                "count": 4090447,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999244351,
                "variance": 0.2499244408
              },
              {
                "average": 0.0005006787767,
                "count": 4090447,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02237025301,
                "variance": 0.0005004282198
              },
              {
                "average": 1.662490188,
                "count": 4090447,
                "maximum": 17,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.1456594,
                "variance": 1.312535461
              },
              {
                "average": 0.7350822969,
                "count": 4090447,
                "maximum": 21.62400055,
                "minimum": -21.34799957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12494898,
                "variance": 123.7644899
              },
              {
                "average": 0.4799059858,
                "count": 4090447,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995961285,
                "variance": 0.2495962916
              },
              {
                "average": 418.8673548,
                "count": 4090447,
                "maximum": 632,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 115.903917,
                "variance": 13433.71797
              },
              {
                "average": 249235786,
                "count": 4090447,
                "maximum": 249242703,
                "minimum": 249233603.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3549.848943,
                "variance": 12601427.52
              },
              {
                "average": 0.4799059858,
                "count": 4090447,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995961285,
                "variance": 0.2495962916
              },
              {
                "average": 0,
                "count": 4090447,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4090447,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4090447,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2059268828,
                "count": 4090447,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4043773507,
                "variance": 0.1635210417
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94955.3054,
              2021523.166,
              640.6783648,
              95443.7454,
              2022003.986,
              1505.378365
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94955.30539910184,
                    2021523.1663959401,
                    640.6783648147697
                  ],
                  [
                    94955.30539910184,
                    2022003.98639594,
                    640.6783648147697
                  ],
                  [
                    95443.74539910184,
                    2022003.98639594,
                    1505.3783648147696
                  ],
                  [
                    95443.74539910184,
                    2021523.1663959401,
                    1505.3783648147696
                  ],
                  [
                    94955.30539910184,
                    2021523.1663959401,
                    640.6783648147697
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:43+00:00",
            "end_time": "2019-08-07T17:20:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000322.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.76753232277997,
              68.13959420351567,
              677.2519254077706
            ],
            [
              -151.76714689839037,
              68.14393803724853,
              677.2519254077706
            ],
            [
              -151.75549929369686,
              68.14378916996321,
              912.1119254077707
            ],
            [
              -151.75588672558592,
              68.13944536425717,
              912.1119254077707
            ],
            [
              -151.76753232277997,
              68.13959420351567,
              677.2519254077706
            ]
          ]
        ]
      },
      "bbox": [
        -151.7675323,
        68.13944536,
        677.2519254,
        -151.7554993,
        68.14393804,
        912.1119254
      ],
      "properties": {
        "datetime": "2019-08-07T19:57:59Z",
        "pc:count": 4625015,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93809.36152,
            "count": 4625015,
            "maximum": 94063.14575,
            "minimum": 93574.64575,
            "name": "X",
            "position": 0,
            "stddev": 130.2802329,
            "variance": 16972.93908
          },
          {
            "average": 2021683.268,
            "count": 4625015,
            "maximum": 2021918.585,
            "minimum": 2021437.905,
            "name": "Y",
            "position": 1,
            "stddev": 132.2015087,
            "variance": 17477.23891
          },
          {
            "average": 689.5613637,
            "count": 4625015,
            "maximum": 912.1119254,
            "minimum": 677.2519254,
            "name": "Z",
            "position": 2,
            "stddev": 4.00672512,
            "variance": 16.05384619
          },
          {
            "average": 51940.05849,
            "count": 4625015,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 5169.988489,
            "variance": 26728780.98
          },
          {
            "average": 1,
            "count": 4625015,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.000000216,
            "count": 4625015,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0004649898009,
            "variance": 2.16215515e-07
          },
          {
            "average": 0.4921309444,
            "count": 4625015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999381282,
            "variance": 0.249938132
          },
          {
            "average": 0.000425295918,
            "count": 4625015,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02061832033,
            "variance": 0.0004251151333
          },
          {
            "average": 1.265166708,
            "count": 4625015,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4417877239,
            "variance": 0.1951763929
          },
          {
            "average": 1.715048069,
            "count": 4625015,
            "maximum": 22.32600021,
            "minimum": -20.93400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.14453792,
            "variance": 124.2007255
          },
          {
            "average": 0.4982500597,
            "count": 4625015,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999969918,
            "variance": 0.2499969918
          },
          {
            "average": 420.7787821,
            "count": 4625015,
            "maximum": 633,
            "minimum": 358,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 113.7514434,
            "variance": 12939.39088
          },
          {
            "average": 249236390.8,
            "count": 4625015,
            "maximum": 249243079.7,
            "minimum": 249234248.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3482.198565,
            "variance": 12125706.84
          },
          {
            "average": 0.4982500597,
            "count": 4625015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999969918,
            "variance": 0.2499969918
          },
          {
            "average": 0,
            "count": 4625015,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4625015,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4625015,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1987035718,
            "count": 4625015,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3990244313,
            "variance": 0.1592204968
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93574.64575,
          2021437.905,
          677.2519254,
          94063.14575,
          2021918.585,
          912.1119254
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93574.64574939726,
                2021437.9052624514,
                677.2519254077706
              ],
              [
                93574.64574939726,
                2021918.5852624516,
                677.2519254077706
              ],
              [
                94063.14574939726,
                2021918.5852624516,
                912.1119254077707
              ],
              [
                94063.14574939726,
                2021437.9052624514,
                912.1119254077707
              ],
              [
                93574.64574939726,
                2021437.9052624514,
                677.2519254077706
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:57:59+00:00",
        "end_time": "2019-08-07T17:30:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000322.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000322.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000322.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000322.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7675323,
            68.13944536,
            677.2519254,
            -151.7554993,
            68.14393804,
            912.1119254
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.76753232277997,
                  68.13959420351567,
                  677.2519254077706
                ],
                [
                  -151.76714689839037,
                  68.14393803724853,
                  677.2519254077706
                ],
                [
                  -151.75549929369686,
                  68.14378916996321,
                  912.1119254077707
                ],
                [
                  -151.75588672558592,
                  68.13944536425717,
                  912.1119254077707
                ],
                [
                  -151.76753232277997,
                  68.13959420351567,
                  677.2519254077706
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000322.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000322.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:57:59Z",
            "pc:count": 4625015,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93809.36152,
                "count": 4625015,
                "maximum": 94063.14575,
                "minimum": 93574.64575,
                "name": "X",
                "position": 0,
                "stddev": 130.2802329,
                "variance": 16972.93908
              },
              {
                "average": 2021683.268,
                "count": 4625015,
                "maximum": 2021918.585,
                "minimum": 2021437.905,
                "name": "Y",
                "position": 1,
                "stddev": 132.2015087,
                "variance": 17477.23891
              },
              {
                "average": 689.5613637,
                "count": 4625015,
                "maximum": 912.1119254,
                "minimum": 677.2519254,
                "name": "Z",
                "position": 2,
                "stddev": 4.00672512,
                "variance": 16.05384619
              },
              {
                "average": 51940.05849,
                "count": 4625015,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 5169.988489,
                "variance": 26728780.98
              },
              {
                "average": 1,
                "count": 4625015,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.000000216,
                "count": 4625015,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0004649898009,
                "variance": 2.16215515e-07
              },
              {
                "average": 0.4921309444,
                "count": 4625015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999381282,
                "variance": 0.249938132
              },
              {
                "average": 0.000425295918,
                "count": 4625015,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02061832033,
                "variance": 0.0004251151333
              },
              {
                "average": 1.265166708,
                "count": 4625015,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4417877239,
                "variance": 0.1951763929
              },
              {
                "average": 1.715048069,
                "count": 4625015,
                "maximum": 22.32600021,
                "minimum": -20.93400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.14453792,
                "variance": 124.2007255
              },
              {
                "average": 0.4982500597,
                "count": 4625015,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999969918,
                "variance": 0.2499969918
              },
              {
                "average": 420.7787821,
                "count": 4625015,
                "maximum": 633,
                "minimum": 358,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 113.7514434,
                "variance": 12939.39088
              },
              {
                "average": 249236390.8,
                "count": 4625015,
                "maximum": 249243079.7,
                "minimum": 249234248.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3482.198565,
                "variance": 12125706.84
              },
              {
                "average": 0.4982500597,
                "count": 4625015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999969918,
                "variance": 0.2499969918
              },
              {
                "average": 0,
                "count": 4625015,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4625015,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4625015,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1987035718,
                "count": 4625015,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3990244313,
                "variance": 0.1592204968
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93574.64575,
              2021437.905,
              677.2519254,
              94063.14575,
              2021918.585,
              912.1119254
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93574.64574939726,
                    2021437.9052624514,
                    677.2519254077706
                  ],
                  [
                    93574.64574939726,
                    2021918.5852624516,
                    677.2519254077706
                  ],
                  [
                    94063.14574939726,
                    2021918.5852624516,
                    912.1119254077707
                  ],
                  [
                    94063.14574939726,
                    2021437.9052624514,
                    912.1119254077707
                  ],
                  [
                    93574.64574939726,
                    2021437.9052624514,
                    677.2519254077706
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:57:59+00:00",
            "end_time": "2019-08-07T17:30:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000428.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74678854013402,
              68.15621646360069,
              683.2274662563121
            ],
            [
              -151.7463991491474,
              68.16056195925387,
              683.2274662563121
            ],
            [
              -151.73474301617907,
              68.16041169117061,
              724.6274662563122
            ],
            [
              -151.73513441806747,
              68.15606622384269,
              724.6274662563122
            ],
            [
              -151.74678854013402,
              68.15621646360069,
              683.2274662563121
            ]
          ]
        ]
      },
      "bbox": [
        -151.7467885,
        68.15606622,
        683.2274663,
        -151.734743,
        68.16056196,
        724.6274663
      ],
      "properties": {
        "datetime": "2019-08-07T20:08:14Z",
        "pc:count": 4712627,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94624.54318,
            "count": 4712627,
            "maximum": 94869.97782,
            "minimum": 94381.43782,
            "name": "X",
            "position": 0,
            "stddev": 133.5646411,
            "variance": 17839.51336
          },
          {
            "average": 2023542.908,
            "count": 4712627,
            "maximum": 2023785.357,
            "minimum": 2023304.517,
            "name": "Y",
            "position": 1,
            "stddev": 128.6419692,
            "variance": 16548.75625
          },
          {
            "average": 698.2034509,
            "count": 4712627,
            "maximum": 724.6274663,
            "minimum": 683.2274663,
            "name": "Z",
            "position": 2,
            "stddev": 7.965307946,
            "variance": 63.44613068
          },
          {
            "average": 51614.65601,
            "count": 4712627,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6593.170841,
            "variance": 43469901.74
          },
          {
            "average": 1.000512665,
            "count": 4712627,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02264568179,
            "variance": 0.0005128269039
          },
          {
            "average": 1.00102915,
            "count": 4712627,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03208370658,
            "variance": 0.001029364228
          },
          {
            "average": 0.5131467014,
            "count": 4712627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998271874,
            "variance": 0.2498272173
          },
          {
            "average": 0.0004403064363,
            "count": 4712627,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02097886222,
            "variance": 0.0004401126599
          },
          {
            "average": 1.293734896,
            "count": 4712627,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5188313198,
            "variance": 0.2691859384
          },
          {
            "average": -2.351658314,
            "count": 4712627,
            "maximum": 21.43799973,
            "minimum": -20.9640007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.26480953,
            "variance": 126.8959338
          },
          {
            "average": 0.5193965064,
            "count": 4712627,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996236869,
            "variance": 0.2496238285
          },
          {
            "average": 423.270672,
            "count": 4712627,
            "maximum": 635,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.3945304,
            "variance": 14017.26484
          },
          {
            "average": 249236243.4,
            "count": 4712627,
            "maximum": 249243694,
            "minimum": 249233803.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3940.597822,
            "variance": 15528311.2
          },
          {
            "average": 0.5193965064,
            "count": 4712627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996236869,
            "variance": 0.2496238285
          },
          {
            "average": 0,
            "count": 4712627,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4712627,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4712627,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2385130417,
            "count": 4712627,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4261743882,
            "variance": 0.1816246092
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94381.43782,
          2023304.517,
          683.2274663,
          94869.97782,
          2023785.357,
          724.6274663
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94381.43781571023,
                2023304.5174798868,
                683.2274662563121
              ],
              [
                94381.43781571023,
                2023785.3574798866,
                683.2274662563121
              ],
              [
                94869.97781571024,
                2023785.3574798866,
                724.6274662563122
              ],
              [
                94869.97781571024,
                2023304.5174798868,
                724.6274662563122
              ],
              [
                94381.43781571023,
                2023304.5174798868,
                683.2274662563121
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:08:14+00:00",
        "end_time": "2019-08-07T17:23:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000428.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000428.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000428.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000428.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7467885,
            68.15606622,
            683.2274663,
            -151.734743,
            68.16056196,
            724.6274663
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74678854013402,
                  68.15621646360069,
                  683.2274662563121
                ],
                [
                  -151.7463991491474,
                  68.16056195925387,
                  683.2274662563121
                ],
                [
                  -151.73474301617907,
                  68.16041169117061,
                  724.6274662563122
                ],
                [
                  -151.73513441806747,
                  68.15606622384269,
                  724.6274662563122
                ],
                [
                  -151.74678854013402,
                  68.15621646360069,
                  683.2274662563121
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000428.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000428.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:08:14Z",
            "pc:count": 4712627,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94624.54318,
                "count": 4712627,
                "maximum": 94869.97782,
                "minimum": 94381.43782,
                "name": "X",
                "position": 0,
                "stddev": 133.5646411,
                "variance": 17839.51336
              },
              {
                "average": 2023542.908,
                "count": 4712627,
                "maximum": 2023785.357,
                "minimum": 2023304.517,
                "name": "Y",
                "position": 1,
                "stddev": 128.6419692,
                "variance": 16548.75625
              },
              {
                "average": 698.2034509,
                "count": 4712627,
                "maximum": 724.6274663,
                "minimum": 683.2274663,
                "name": "Z",
                "position": 2,
                "stddev": 7.965307946,
                "variance": 63.44613068
              },
              {
                "average": 51614.65601,
                "count": 4712627,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6593.170841,
                "variance": 43469901.74
              },
              {
                "average": 1.000512665,
                "count": 4712627,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02264568179,
                "variance": 0.0005128269039
              },
              {
                "average": 1.00102915,
                "count": 4712627,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03208370658,
                "variance": 0.001029364228
              },
              {
                "average": 0.5131467014,
                "count": 4712627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998271874,
                "variance": 0.2498272173
              },
              {
                "average": 0.0004403064363,
                "count": 4712627,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02097886222,
                "variance": 0.0004401126599
              },
              {
                "average": 1.293734896,
                "count": 4712627,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5188313198,
                "variance": 0.2691859384
              },
              {
                "average": -2.351658314,
                "count": 4712627,
                "maximum": 21.43799973,
                "minimum": -20.9640007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.26480953,
                "variance": 126.8959338
              },
              {
                "average": 0.5193965064,
                "count": 4712627,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996236869,
                "variance": 0.2496238285
              },
              {
                "average": 423.270672,
                "count": 4712627,
                "maximum": 635,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.3945304,
                "variance": 14017.26484
              },
              {
                "average": 249236243.4,
                "count": 4712627,
                "maximum": 249243694,
                "minimum": 249233803.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3940.597822,
                "variance": 15528311.2
              },
              {
                "average": 0.5193965064,
                "count": 4712627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996236869,
                "variance": 0.2496238285
              },
              {
                "average": 0,
                "count": 4712627,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4712627,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4712627,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2385130417,
                "count": 4712627,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4261743882,
                "variance": 0.1816246092
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94381.43782,
              2023304.517,
              683.2274663,
              94869.97782,
              2023785.357,
              724.6274663
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94381.43781571023,
                    2023304.5174798868,
                    683.2274662563121
                  ],
                  [
                    94381.43781571023,
                    2023785.3574798866,
                    683.2274662563121
                  ],
                  [
                    94869.97781571024,
                    2023785.3574798866,
                    724.6274662563122
                  ],
                  [
                    94869.97781571024,
                    2023304.5174798868,
                    724.6274662563122
                  ],
                  [
                    94381.43781571023,
                    2023304.5174798868,
                    683.2274662563121
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:08:14+00:00",
            "end_time": "2019-08-07T17:23:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000274.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7229404116342,
              68.13186246338446,
              665.5807616347306
            ],
            [
              -151.7225474450968,
              68.13620571512995,
              665.5807616347306
            ],
            [
              -151.71090416121862,
              68.13605389384023,
              690.5207616347307
            ],
            [
              -151.71129913358968,
              68.13171067066259,
              690.5207616347307
            ],
            [
              -151.7229404116342,
              68.13186246338446,
              665.5807616347306
            ]
          ]
        ]
      },
      "bbox": [
        -151.7229404,
        68.13171067,
        665.5807616,
        -151.7109042,
        68.13620572,
        690.5207616
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:10Z",
        "pc:count": 4428977,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95716.97937,
            "count": 4428977,
            "maximum": 95960.79948,
            "minimum": 95472.31948,
            "name": "X",
            "position": 0,
            "stddev": 132.9389404,
            "variance": 17672.76186
          },
          {
            "average": 2020883.807,
            "count": 4428977,
            "maximum": 2021127.392,
            "minimum": 2020646.752,
            "name": "Y",
            "position": 1,
            "stddev": 129.0927599,
            "variance": 16664.94065
          },
          {
            "average": 673.4165952,
            "count": 4428977,
            "maximum": 690.5207616,
            "minimum": 665.5807616,
            "name": "Z",
            "position": 2,
            "stddev": 4.025229126,
            "variance": 16.20246952
          },
          {
            "average": 52630.39635,
            "count": 4428977,
            "maximum": 65535,
            "minimum": 921,
            "name": "Intensity",
            "position": 3,
            "stddev": 6321.302373,
            "variance": 39958863.7
          },
          {
            "average": 1.000004967,
            "count": 4428977,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002228735847,
            "variance": 4.967263476e-06
          },
          {
            "average": 1.000009935,
            "count": 4428977,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003151900634,
            "variance": 9.934477604e-06
          },
          {
            "average": 0.5092627485,
            "count": 4428977,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999142506,
            "variance": 0.2499142579
          },
          {
            "average": 0.0005628839346,
            "count": 4428977,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0237184996,
            "variance": 0.0005625672233
          },
          {
            "average": 1.242856082,
            "count": 4428977,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4401429591,
            "variance": 0.1937258245
          },
          {
            "average": -1.615891783,
            "count": 4428977,
            "maximum": 21.46800041,
            "minimum": -20.94599915,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.48427374,
            "variance": 131.8885434
          },
          {
            "average": 0.5129706025,
            "count": 4428977,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998317916,
            "variance": 0.2498318199
          },
          {
            "average": 424.2801936,
            "count": 4428977,
            "maximum": 630,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 119.775917,
            "variance": 14346.2703
          },
          {
            "average": 249235717.4,
            "count": 4428977,
            "maximum": 249242010.5,
            "minimum": 249233422.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3539.013828,
            "variance": 12524618.87
          },
          {
            "average": 0.5129706025,
            "count": 4428977,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998317916,
            "variance": 0.2498318199
          },
          {
            "average": 0,
            "count": 4428977,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4428977,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4428977,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2705794137,
            "count": 4428977,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4442592027,
            "variance": 0.1973662391
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95472.31948,
          2020646.752,
          665.5807616,
          95960.79948,
          2021127.392,
          690.5207616
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95472.31948112568,
                2020646.751906612,
                665.5807616347306
              ],
              [
                95472.31948112568,
                2021127.391906612,
                665.5807616347306
              ],
              [
                95960.7994811257,
                2021127.391906612,
                690.5207616347307
              ],
              [
                95960.7994811257,
                2020646.751906612,
                690.5207616347307
              ],
              [
                95472.31948112568,
                2020646.751906612,
                665.5807616347306
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:10+00:00",
        "end_time": "2019-08-07T17:17:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000274.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000274.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000274.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000274.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7229404,
            68.13171067,
            665.5807616,
            -151.7109042,
            68.13620572,
            690.5207616
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7229404116342,
                  68.13186246338446,
                  665.5807616347306
                ],
                [
                  -151.7225474450968,
                  68.13620571512995,
                  665.5807616347306
                ],
                [
                  -151.71090416121862,
                  68.13605389384023,
                  690.5207616347307
                ],
                [
                  -151.71129913358968,
                  68.13171067066259,
                  690.5207616347307
                ],
                [
                  -151.7229404116342,
                  68.13186246338446,
                  665.5807616347306
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000274.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000274.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:10Z",
            "pc:count": 4428977,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95716.97937,
                "count": 4428977,
                "maximum": 95960.79948,
                "minimum": 95472.31948,
                "name": "X",
                "position": 0,
                "stddev": 132.9389404,
                "variance": 17672.76186
              },
              {
                "average": 2020883.807,
                "count": 4428977,
                "maximum": 2021127.392,
                "minimum": 2020646.752,
                "name": "Y",
                "position": 1,
                "stddev": 129.0927599,
                "variance": 16664.94065
              },
              {
                "average": 673.4165952,
                "count": 4428977,
                "maximum": 690.5207616,
                "minimum": 665.5807616,
                "name": "Z",
                "position": 2,
                "stddev": 4.025229126,
                "variance": 16.20246952
              },
              {
                "average": 52630.39635,
                "count": 4428977,
                "maximum": 65535,
                "minimum": 921,
                "name": "Intensity",
                "position": 3,
                "stddev": 6321.302373,
                "variance": 39958863.7
              },
              {
                "average": 1.000004967,
                "count": 4428977,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002228735847,
                "variance": 4.967263476e-06
              },
              {
                "average": 1.000009935,
                "count": 4428977,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003151900634,
                "variance": 9.934477604e-06
              },
              {
                "average": 0.5092627485,
                "count": 4428977,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999142506,
                "variance": 0.2499142579
              },
              {
                "average": 0.0005628839346,
                "count": 4428977,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0237184996,
                "variance": 0.0005625672233
              },
              {
                "average": 1.242856082,
                "count": 4428977,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4401429591,
                "variance": 0.1937258245
              },
              {
                "average": -1.615891783,
                "count": 4428977,
                "maximum": 21.46800041,
                "minimum": -20.94599915,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.48427374,
                "variance": 131.8885434
              },
              {
                "average": 0.5129706025,
                "count": 4428977,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998317916,
                "variance": 0.2498318199
              },
              {
                "average": 424.2801936,
                "count": 4428977,
                "maximum": 630,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 119.775917,
                "variance": 14346.2703
              },
              {
                "average": 249235717.4,
                "count": 4428977,
                "maximum": 249242010.5,
                "minimum": 249233422.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3539.013828,
                "variance": 12524618.87
              },
              {
                "average": 0.5129706025,
                "count": 4428977,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998317916,
                "variance": 0.2498318199
              },
              {
                "average": 0,
                "count": 4428977,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4428977,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4428977,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2705794137,
                "count": 4428977,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4442592027,
                "variance": 0.1973662391
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95472.31948,
              2020646.752,
              665.5807616,
              95960.79948,
              2021127.392,
              690.5207616
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95472.31948112568,
                    2020646.751906612,
                    665.5807616347306
                  ],
                  [
                    95472.31948112568,
                    2021127.391906612,
                    665.5807616347306
                  ],
                  [
                    95960.7994811257,
                    2021127.391906612,
                    690.5207616347307
                  ],
                  [
                    95960.7994811257,
                    2020646.751906612,
                    690.5207616347307
                  ],
                  [
                    95472.31948112568,
                    2020646.751906612,
                    665.5807616347306
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:10+00:00",
            "end_time": "2019-08-07T17:17:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000220.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74430014074184,
              68.12343605140474,
              625.3049741207084
            ],
            [
              -151.7439109082302,
              68.12778012235916,
              625.3049741207084
            ],
            [
              -151.73227091446444,
              68.12762971956178,
              671.7849741207084
            ],
            [
              -151.7326621520556,
              68.12328567690156,
              671.7849741207084
            ],
            [
              -151.74430014074184,
              68.12343605140474,
              625.3049741207084
            ]
          ]
        ]
      },
      "bbox": [
        -151.7443001,
        68.12328568,
        625.3049741,
        -151.7322709,
        68.12778012,
        671.7849741
      ],
      "properties": {
        "datetime": "2019-08-07T19:39:52Z",
        "pc:count": 4365096,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94853.42793,
            "count": 4365096,
            "maximum": 95097.24599,
            "minimum": 94608.74599,
            "name": "X",
            "position": 0,
            "stddev": 132.8447932,
            "variance": 17647.73907
          },
          {
            "average": 2019927.881,
            "count": 4365096,
            "maximum": 2020165.496,
            "minimum": 2019684.756,
            "name": "Y",
            "position": 1,
            "stddev": 129.4637464,
            "variance": 16760.86163
          },
          {
            "average": 655.4341214,
            "count": 4365096,
            "maximum": 671.7849741,
            "minimum": 625.3049741,
            "name": "Z",
            "position": 2,
            "stddev": 11.23430087,
            "variance": 126.209516
          },
          {
            "average": 50885.92699,
            "count": 4365096,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8874.836922,
            "variance": 78762730.39
          },
          {
            "average": 1.004345838,
            "count": 4365096,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06634137364,
            "variance": 0.004401177856
          },
          {
            "average": 1.008688698,
            "count": 4365096,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09399693445,
            "variance": 0.008835423687
          },
          {
            "average": 0,
            "count": 4365096,
            "maximum": 0,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4365096,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.27206893,
            "count": 4365096,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5563357105,
            "variance": 0.3095094228
          },
          {
            "average": -0.1031548414,
            "count": 4365096,
            "maximum": 21.61199951,
            "minimum": -21.1079998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.35177228,
            "variance": 128.8627339
          },
          {
            "average": 0.5211770829,
            "count": 4365096,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995513871,
            "variance": 0.2495515883
          },
          {
            "average": 425.4805991,
            "count": 4365096,
            "maximum": 630,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.3666648,
            "variance": 14010.66735
          },
          {
            "average": 249235984,
            "count": 4365096,
            "maximum": 249241992.3,
            "minimum": 249233739.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3342.795756,
            "variance": 11174283.46
          },
          {
            "average": 0.5211770829,
            "count": 4365096,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995513871,
            "variance": 0.2495515883
          },
          {
            "average": 0,
            "count": 4365096,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4365096,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4365096,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2417064825,
            "count": 4365096,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4281173914,
            "variance": 0.1832845008
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94608.74599,
          2019684.756,
          625.3049741,
          95097.24599,
          2020165.496,
          671.7849741
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94608.74599374612,
                2019684.7560948026,
                625.3049741207084
              ],
              [
                94608.74599374612,
                2020165.4960948029,
                625.3049741207084
              ],
              [
                95097.24599374612,
                2020165.4960948029,
                671.7849741207084
              ],
              [
                95097.24599374612,
                2019684.7560948026,
                671.7849741207084
              ],
              [
                94608.74599374612,
                2019684.7560948026,
                625.3049741207084
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:39:52+00:00",
        "end_time": "2019-08-07T17:22:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000220.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000220.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000220.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000220.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7443001,
            68.12328568,
            625.3049741,
            -151.7322709,
            68.12778012,
            671.7849741
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74430014074184,
                  68.12343605140474,
                  625.3049741207084
                ],
                [
                  -151.7439109082302,
                  68.12778012235916,
                  625.3049741207084
                ],
                [
                  -151.73227091446444,
                  68.12762971956178,
                  671.7849741207084
                ],
                [
                  -151.7326621520556,
                  68.12328567690156,
                  671.7849741207084
                ],
                [
                  -151.74430014074184,
                  68.12343605140474,
                  625.3049741207084
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000220.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000220.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:39:52Z",
            "pc:count": 4365096,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94853.42793,
                "count": 4365096,
                "maximum": 95097.24599,
                "minimum": 94608.74599,
                "name": "X",
                "position": 0,
                "stddev": 132.8447932,
                "variance": 17647.73907
              },
              {
                "average": 2019927.881,
                "count": 4365096,
                "maximum": 2020165.496,
                "minimum": 2019684.756,
                "name": "Y",
                "position": 1,
                "stddev": 129.4637464,
                "variance": 16760.86163
              },
              {
                "average": 655.4341214,
                "count": 4365096,
                "maximum": 671.7849741,
                "minimum": 625.3049741,
                "name": "Z",
                "position": 2,
                "stddev": 11.23430087,
                "variance": 126.209516
              },
              {
                "average": 50885.92699,
                "count": 4365096,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8874.836922,
                "variance": 78762730.39
              },
              {
                "average": 1.004345838,
                "count": 4365096,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06634137364,
                "variance": 0.004401177856
              },
              {
                "average": 1.008688698,
                "count": 4365096,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09399693445,
                "variance": 0.008835423687
              },
              {
                "average": 0,
                "count": 4365096,
                "maximum": 0,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4365096,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.27206893,
                "count": 4365096,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5563357105,
                "variance": 0.3095094228
              },
              {
                "average": -0.1031548414,
                "count": 4365096,
                "maximum": 21.61199951,
                "minimum": -21.1079998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.35177228,
                "variance": 128.8627339
              },
              {
                "average": 0.5211770829,
                "count": 4365096,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995513871,
                "variance": 0.2495515883
              },
              {
                "average": 425.4805991,
                "count": 4365096,
                "maximum": 630,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.3666648,
                "variance": 14010.66735
              },
              {
                "average": 249235984,
                "count": 4365096,
                "maximum": 249241992.3,
                "minimum": 249233739.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3342.795756,
                "variance": 11174283.46
              },
              {
                "average": 0.5211770829,
                "count": 4365096,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995513871,
                "variance": 0.2495515883
              },
              {
                "average": 0,
                "count": 4365096,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4365096,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4365096,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2417064825,
                "count": 4365096,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4281173914,
                "variance": 0.1832845008
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94608.74599,
              2019684.756,
              625.3049741,
              95097.24599,
              2020165.496,
              671.7849741
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94608.74599374612,
                    2019684.7560948026,
                    625.3049741207084
                  ],
                  [
                    94608.74599374612,
                    2020165.4960948029,
                    625.3049741207084
                  ],
                  [
                    95097.24599374612,
                    2020165.4960948029,
                    671.7849741207084
                  ],
                  [
                    95097.24599374612,
                    2019684.7560948026,
                    671.7849741207084
                  ],
                  [
                    94608.74599374612,
                    2019684.7560948026,
                    625.3049741207084
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:39:52+00:00",
            "end_time": "2019-08-07T17:22:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000378.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7241689350776,
              68.14825226717842,
              645.64125106627
            ],
            [
              -151.72377577742557,
              68.15259740600655,
              645.64125106627
            ],
            [
              -151.71212394701243,
              68.15244564464258,
              709.7812510662701
            ],
            [
              -151.71251911403385,
              68.14810053440729,
              709.7812510662701
            ],
            [
              -151.7241689350776,
              68.14825226717842,
              645.64125106627
            ]
          ]
        ]
      },
      "bbox": [
        -151.7241689,
        68.14810053,
        645.6412511,
        -151.7121239,
        68.15259741,
        709.7812511
      ],
      "properties": {
        "datetime": "2019-08-07T19:52:00Z",
        "pc:count": 4132686,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95592.57725,
            "count": 4132686,
            "maximum": 95847.24498,
            "minimum": 95358.72498,
            "name": "X",
            "position": 0,
            "stddev": 128.4949447,
            "variance": 16510.95081
          },
          {
            "average": 2022705.217,
            "count": 4132686,
            "maximum": 2022937.391,
            "minimum": 2022456.571,
            "name": "Y",
            "position": 1,
            "stddev": 127.2129727,
            "variance": 16183.14043
          },
          {
            "average": 654.2339982,
            "count": 4132686,
            "maximum": 709.7812511,
            "minimum": 645.6412511,
            "name": "Z",
            "position": 2,
            "stddev": 3.437634239,
            "variance": 11.81732916
          },
          {
            "average": 48460.87334,
            "count": 4132686,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9485.400971,
            "variance": 89972831.57
          },
          {
            "average": 1.000317711,
            "count": 4132686,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01782162127,
            "variance": 0.0003176101845
          },
          {
            "average": 1.000635422,
            "count": 4132686,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02519957318,
            "variance": 0.0006350184884
          },
          {
            "average": 0.5133653996,
            "count": 4132686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998213946,
            "variance": 0.2498214265
          },
          {
            "average": 0.0005185489534,
            "count": 4132686,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02276576785,
            "variance": 0.0005182801858
          },
          {
            "average": 1.500831179,
            "count": 4132686,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.375440503,
            "variance": 1.891836577
          },
          {
            "average": -2.986883638,
            "count": 4132686,
            "maximum": 16.19400024,
            "minimum": -21,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12972779,
            "variance": 123.8708406
          },
          {
            "average": 0.5136828687,
            "count": 4132686,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998128045,
            "variance": 0.2498128396
          },
          {
            "average": 427.440696,
            "count": 4132686,
            "maximum": 632,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 122.1978635,
            "variance": 14932.31785
          },
          {
            "average": 249235996.6,
            "count": 4132686,
            "maximum": 249242720.9,
            "minimum": 249233455,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3915.132739,
            "variance": 15328264.36
          },
          {
            "average": 0.5136828687,
            "count": 4132686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998128045,
            "variance": 0.2498128396
          },
          {
            "average": 0,
            "count": 4132686,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4132686,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4132686,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2387759438,
            "count": 4132686,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4263355913,
            "variance": 0.1817620364
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95358.72498,
          2022456.571,
          645.6412511,
          95847.24498,
          2022937.391,
          709.7812511
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95358.72497614387,
                2022456.5714709538,
                645.64125106627
              ],
              [
                95358.72497614387,
                2022937.3914709536,
                645.64125106627
              ],
              [
                95847.24497614386,
                2022937.3914709536,
                709.7812510662701
              ],
              [
                95847.24497614386,
                2022456.5714709538,
                709.7812510662701
              ],
              [
                95358.72497614387,
                2022456.5714709538,
                645.64125106627
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:52:00+00:00",
        "end_time": "2019-08-07T17:17:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000378.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000378.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000378.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000378.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7241689,
            68.14810053,
            645.6412511,
            -151.7121239,
            68.15259741,
            709.7812511
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7241689350776,
                  68.14825226717842,
                  645.64125106627
                ],
                [
                  -151.72377577742557,
                  68.15259740600655,
                  645.64125106627
                ],
                [
                  -151.71212394701243,
                  68.15244564464258,
                  709.7812510662701
                ],
                [
                  -151.71251911403385,
                  68.14810053440729,
                  709.7812510662701
                ],
                [
                  -151.7241689350776,
                  68.14825226717842,
                  645.64125106627
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000378.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000378.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:52:00Z",
            "pc:count": 4132686,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95592.57725,
                "count": 4132686,
                "maximum": 95847.24498,
                "minimum": 95358.72498,
                "name": "X",
                "position": 0,
                "stddev": 128.4949447,
                "variance": 16510.95081
              },
              {
                "average": 2022705.217,
                "count": 4132686,
                "maximum": 2022937.391,
                "minimum": 2022456.571,
                "name": "Y",
                "position": 1,
                "stddev": 127.2129727,
                "variance": 16183.14043
              },
              {
                "average": 654.2339982,
                "count": 4132686,
                "maximum": 709.7812511,
                "minimum": 645.6412511,
                "name": "Z",
                "position": 2,
                "stddev": 3.437634239,
                "variance": 11.81732916
              },
              {
                "average": 48460.87334,
                "count": 4132686,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9485.400971,
                "variance": 89972831.57
              },
              {
                "average": 1.000317711,
                "count": 4132686,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01782162127,
                "variance": 0.0003176101845
              },
              {
                "average": 1.000635422,
                "count": 4132686,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02519957318,
                "variance": 0.0006350184884
              },
              {
                "average": 0.5133653996,
                "count": 4132686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998213946,
                "variance": 0.2498214265
              },
              {
                "average": 0.0005185489534,
                "count": 4132686,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02276576785,
                "variance": 0.0005182801858
              },
              {
                "average": 1.500831179,
                "count": 4132686,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.375440503,
                "variance": 1.891836577
              },
              {
                "average": -2.986883638,
                "count": 4132686,
                "maximum": 16.19400024,
                "minimum": -21,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12972779,
                "variance": 123.8708406
              },
              {
                "average": 0.5136828687,
                "count": 4132686,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998128045,
                "variance": 0.2498128396
              },
              {
                "average": 427.440696,
                "count": 4132686,
                "maximum": 632,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 122.1978635,
                "variance": 14932.31785
              },
              {
                "average": 249235996.6,
                "count": 4132686,
                "maximum": 249242720.9,
                "minimum": 249233455,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3915.132739,
                "variance": 15328264.36
              },
              {
                "average": 0.5136828687,
                "count": 4132686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998128045,
                "variance": 0.2498128396
              },
              {
                "average": 0,
                "count": 4132686,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4132686,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4132686,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2387759438,
                "count": 4132686,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4263355913,
                "variance": 0.1817620364
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95358.72498,
              2022456.571,
              645.6412511,
              95847.24498,
              2022937.391,
              709.7812511
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95358.72497614387,
                    2022456.5714709538,
                    645.64125106627
                  ],
                  [
                    95358.72497614387,
                    2022937.3914709536,
                    645.64125106627
                  ],
                  [
                    95847.24497614386,
                    2022937.3914709536,
                    709.7812510662701
                  ],
                  [
                    95847.24497614386,
                    2022456.5714709538,
                    709.7812510662701
                  ],
                  [
                    95358.72497614387,
                    2022456.5714709538,
                    645.64125106627
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:52:00+00:00",
            "end_time": "2019-08-07T17:17:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000297.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.75622634430476,
              68.13561296634725,
              633.6671090519878
            ],
            [
              -151.75583894940948,
              68.13995761625561,
              633.6671090519878
            ],
            [
              -151.74419325359537,
              68.13980799952164,
              690.6471090519879
            ],
            [
              -151.74458265572648,
              68.13546337778078,
              690.6471090519879
            ],
            [
              -151.75622634430476,
              68.13561296634725,
              633.6671090519878
            ]
          ]
        ]
      },
      "bbox": [
        -151.7562263,
        68.13546338,
        633.6671091,
        -151.7441933,
        68.13995762,
        690.6471091
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:32Z",
        "pc:count": 4567607,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94299.69896,
            "count": 4567607,
            "maximum": 94551.73349,
            "minimum": 94063.23349,
            "name": "X",
            "position": 0,
            "stddev": 134.5427201,
            "variance": 18101.74353
          },
          {
            "average": 2021257.013,
            "count": 4567607,
            "maximum": 2021494.594,
            "minimum": 2021013.814,
            "name": "Y",
            "position": 1,
            "stddev": 129.2406622,
            "variance": 16703.14876
          },
          {
            "average": 664.9622256,
            "count": 4567607,
            "maximum": 690.6471091,
            "minimum": 633.6671091,
            "name": "Z",
            "position": 2,
            "stddev": 11.60113595,
            "variance": 134.5863554
          },
          {
            "average": 52346.67376,
            "count": 4567607,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 5473.541622,
            "variance": 29959657.89
          },
          {
            "average": 1.001397887,
            "count": 4567607,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03764822702,
            "variance": 0.001417388998
          },
          {
            "average": 1.002793147,
            "count": 4567607,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05338270079,
            "variance": 0.002849712743
          },
          {
            "average": 0.5075250563,
            "count": 4567607,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499943425,
            "variance": 0.2499434282
          },
          {
            "average": 0.0005525869454,
            "count": 4567607,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02350067476,
            "variance": 0.000552281714
          },
          {
            "average": 1.284332036,
            "count": 4567607,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4962541782,
            "variance": 0.2462682093
          },
          {
            "average": -1.840639748,
            "count": 4567607,
            "maximum": 21.35400009,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.25569577,
            "variance": 126.6906874
          },
          {
            "average": 0.496157616,
            "count": 4567607,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999852906,
            "variance": 0.2499852908
          },
          {
            "average": 417.2383703,
            "count": 4567607,
            "maximum": 632,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 112.459913,
            "variance": 12647.23204
          },
          {
            "average": 249236063.7,
            "count": 4567607,
            "maximum": 249242692.3,
            "minimum": 249233935.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3391.517732,
            "variance": 11502392.52
          },
          {
            "average": 0.496157616,
            "count": 4567607,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999852906,
            "variance": 0.2499852908
          },
          {
            "average": 0,
            "count": 4567607,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4567607,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4567607,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2694417449,
            "count": 4567607,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4436698481,
            "variance": 0.1968429341
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94063.23349,
          2021013.814,
          633.6671091,
          94551.73349,
          2021494.594,
          690.6471091
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94063.2334909382,
                2021013.8137694788,
                633.6671090519878
              ],
              [
                94063.2334909382,
                2021494.5937694786,
                633.6671090519878
              ],
              [
                94551.7334909382,
                2021494.5937694786,
                690.6471090519879
              ],
              [
                94551.7334909382,
                2021013.8137694788,
                690.6471090519879
              ],
              [
                94063.2334909382,
                2021013.8137694788,
                633.6671090519878
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:32+00:00",
        "end_time": "2019-08-07T17:25:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000297.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000297.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000297.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000297.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7562263,
            68.13546338,
            633.6671091,
            -151.7441933,
            68.13995762,
            690.6471091
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.75622634430476,
                  68.13561296634725,
                  633.6671090519878
                ],
                [
                  -151.75583894940948,
                  68.13995761625561,
                  633.6671090519878
                ],
                [
                  -151.74419325359537,
                  68.13980799952164,
                  690.6471090519879
                ],
                [
                  -151.74458265572648,
                  68.13546337778078,
                  690.6471090519879
                ],
                [
                  -151.75622634430476,
                  68.13561296634725,
                  633.6671090519878
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000297.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000297.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:32Z",
            "pc:count": 4567607,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94299.69896,
                "count": 4567607,
                "maximum": 94551.73349,
                "minimum": 94063.23349,
                "name": "X",
                "position": 0,
                "stddev": 134.5427201,
                "variance": 18101.74353
              },
              {
                "average": 2021257.013,
                "count": 4567607,
                "maximum": 2021494.594,
                "minimum": 2021013.814,
                "name": "Y",
                "position": 1,
                "stddev": 129.2406622,
                "variance": 16703.14876
              },
              {
                "average": 664.9622256,
                "count": 4567607,
                "maximum": 690.6471091,
                "minimum": 633.6671091,
                "name": "Z",
                "position": 2,
                "stddev": 11.60113595,
                "variance": 134.5863554
              },
              {
                "average": 52346.67376,
                "count": 4567607,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 5473.541622,
                "variance": 29959657.89
              },
              {
                "average": 1.001397887,
                "count": 4567607,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03764822702,
                "variance": 0.001417388998
              },
              {
                "average": 1.002793147,
                "count": 4567607,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05338270079,
                "variance": 0.002849712743
              },
              {
                "average": 0.5075250563,
                "count": 4567607,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499943425,
                "variance": 0.2499434282
              },
              {
                "average": 0.0005525869454,
                "count": 4567607,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02350067476,
                "variance": 0.000552281714
              },
              {
                "average": 1.284332036,
                "count": 4567607,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4962541782,
                "variance": 0.2462682093
              },
              {
                "average": -1.840639748,
                "count": 4567607,
                "maximum": 21.35400009,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.25569577,
                "variance": 126.6906874
              },
              {
                "average": 0.496157616,
                "count": 4567607,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999852906,
                "variance": 0.2499852908
              },
              {
                "average": 417.2383703,
                "count": 4567607,
                "maximum": 632,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 112.459913,
                "variance": 12647.23204
              },
              {
                "average": 249236063.7,
                "count": 4567607,
                "maximum": 249242692.3,
                "minimum": 249233935.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3391.517732,
                "variance": 11502392.52
              },
              {
                "average": 0.496157616,
                "count": 4567607,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999852906,
                "variance": 0.2499852908
              },
              {
                "average": 0,
                "count": 4567607,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4567607,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4567607,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2694417449,
                "count": 4567607,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4436698481,
                "variance": 0.1968429341
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94063.23349,
              2021013.814,
              633.6671091,
              94551.73349,
              2021494.594,
              690.6471091
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94063.2334909382,
                    2021013.8137694788,
                    633.6671090519878
                  ],
                  [
                    94063.2334909382,
                    2021494.5937694786,
                    633.6671090519878
                  ],
                  [
                    94551.7334909382,
                    2021494.5937694786,
                    690.6471090519879
                  ],
                  [
                    94551.7334909382,
                    2021013.8137694788,
                    690.6471090519879
                  ],
                  [
                    94063.2334909382,
                    2021013.8137694788,
                    633.6671090519878
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:32+00:00",
            "end_time": "2019-08-07T17:25:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000271.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7559121447877,
              68.13151591188014,
              626.3520446113924
            ],
            [
              -151.75552482318506,
              68.1358597738255,
              626.3520446113924
            ],
            [
              -151.743882454788,
              68.13571015691805,
              669.5920446113925
            ],
            [
              -151.74427178239165,
              68.13136632312926,
              669.5920446113925
            ],
            [
              -151.7559121447877,
              68.13151591188014,
              626.3520446113924
            ]
          ]
        ]
      },
      "bbox": [
        -151.7559121,
        68.13136632,
        626.3520446,
        -151.7438825,
        68.13585977,
        669.5920446
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:23Z",
        "pc:count": 4538793,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94337.89391,
            "count": 4538793,
            "maximum": 94580.14903,
            "minimum": 94091.70903,
            "name": "X",
            "position": 0,
            "stddev": 135.0307581,
            "variance": 18233.30562
          },
          {
            "average": 2020796.834,
            "count": 4538793,
            "maximum": 2021042.088,
            "minimum": 2020561.388,
            "name": "Y",
            "position": 1,
            "stddev": 132.7093617,
            "variance": 17611.77469
          },
          {
            "average": 636.5596513,
            "count": 4538793,
            "maximum": 669.5920446,
            "minimum": 626.3520446,
            "name": "Z",
            "position": 2,
            "stddev": 9.994962214,
            "variance": 99.89926966
          },
          {
            "average": 47895.80228,
            "count": 4538793,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10070.47003,
            "variance": 101414366.6
          },
          {
            "average": 1.010315738,
            "count": 4538793,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1013112334,
            "variance": 0.01026396601
          },
          {
            "average": 1.020631256,
            "count": 4538793,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1427218691,
            "variance": 0.02036953193
          },
          {
            "average": 0.4959159847,
            "count": 4538793,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999833756,
            "variance": 0.2499833759
          },
          {
            "average": 0.0005783475915,
            "count": 4538793,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02404190577,
            "variance": 0.0005780132329
          },
          {
            "average": 1.462500493,
            "count": 4538793,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7831426892,
            "variance": 0.6133124717
          },
          {
            "average": 3.188676411,
            "count": 4538793,
            "maximum": 21.45000076,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.05884687,
            "variance": 122.2980941
          },
          {
            "average": 0.4962261993,
            "count": 4538793,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999858133,
            "variance": 0.2499858135
          },
          {
            "average": 415.6363075,
            "count": 4538793,
            "maximum": 632,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 111.1509266,
            "variance": 12354.52849
          },
          {
            "average": 249235952.8,
            "count": 4538793,
            "maximum": 249242683.4,
            "minimum": 249233942.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3243.785076,
            "variance": 10522141.62
          },
          {
            "average": 0.4962261993,
            "count": 4538793,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999858133,
            "variance": 0.2499858135
          },
          {
            "average": 0,
            "count": 4538793,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4538793,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4538793,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2800980349,
            "count": 4538793,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4490469576,
            "variance": 0.2016431702
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94091.70903,
          2020561.388,
          626.3520446,
          94580.14903,
          2021042.088,
          669.5920446
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94091.70903371391,
                2020561.3883443612,
                626.3520446113924
              ],
              [
                94091.70903371391,
                2021042.0883443614,
                626.3520446113924
              ],
              [
                94580.14903371391,
                2021042.0883443614,
                669.5920446113925
              ],
              [
                94580.14903371391,
                2020561.3883443612,
                669.5920446113925
              ],
              [
                94091.70903371391,
                2020561.3883443612,
                626.3520446113924
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:23+00:00",
        "end_time": "2019-08-07T17:25:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000271.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000271.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000271.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000271.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7559121,
            68.13136632,
            626.3520446,
            -151.7438825,
            68.13585977,
            669.5920446
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7559121447877,
                  68.13151591188014,
                  626.3520446113924
                ],
                [
                  -151.75552482318506,
                  68.1358597738255,
                  626.3520446113924
                ],
                [
                  -151.743882454788,
                  68.13571015691805,
                  669.5920446113925
                ],
                [
                  -151.74427178239165,
                  68.13136632312926,
                  669.5920446113925
                ],
                [
                  -151.7559121447877,
                  68.13151591188014,
                  626.3520446113924
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000271.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000271.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:23Z",
            "pc:count": 4538793,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94337.89391,
                "count": 4538793,
                "maximum": 94580.14903,
                "minimum": 94091.70903,
                "name": "X",
                "position": 0,
                "stddev": 135.0307581,
                "variance": 18233.30562
              },
              {
                "average": 2020796.834,
                "count": 4538793,
                "maximum": 2021042.088,
                "minimum": 2020561.388,
                "name": "Y",
                "position": 1,
                "stddev": 132.7093617,
                "variance": 17611.77469
              },
              {
                "average": 636.5596513,
                "count": 4538793,
                "maximum": 669.5920446,
                "minimum": 626.3520446,
                "name": "Z",
                "position": 2,
                "stddev": 9.994962214,
                "variance": 99.89926966
              },
              {
                "average": 47895.80228,
                "count": 4538793,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10070.47003,
                "variance": 101414366.6
              },
              {
                "average": 1.010315738,
                "count": 4538793,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1013112334,
                "variance": 0.01026396601
              },
              {
                "average": 1.020631256,
                "count": 4538793,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1427218691,
                "variance": 0.02036953193
              },
              {
                "average": 0.4959159847,
                "count": 4538793,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999833756,
                "variance": 0.2499833759
              },
              {
                "average": 0.0005783475915,
                "count": 4538793,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02404190577,
                "variance": 0.0005780132329
              },
              {
                "average": 1.462500493,
                "count": 4538793,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7831426892,
                "variance": 0.6133124717
              },
              {
                "average": 3.188676411,
                "count": 4538793,
                "maximum": 21.45000076,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.05884687,
                "variance": 122.2980941
              },
              {
                "average": 0.4962261993,
                "count": 4538793,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999858133,
                "variance": 0.2499858135
              },
              {
                "average": 415.6363075,
                "count": 4538793,
                "maximum": 632,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 111.1509266,
                "variance": 12354.52849
              },
              {
                "average": 249235952.8,
                "count": 4538793,
                "maximum": 249242683.4,
                "minimum": 249233942.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3243.785076,
                "variance": 10522141.62
              },
              {
                "average": 0.4962261993,
                "count": 4538793,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999858133,
                "variance": 0.2499858135
              },
              {
                "average": 0,
                "count": 4538793,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4538793,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4538793,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2800980349,
                "count": 4538793,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4490469576,
                "variance": 0.2016431702
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94091.70903,
              2020561.388,
              626.3520446,
              94580.14903,
              2021042.088,
              669.5920446
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94091.70903371391,
                    2020561.3883443612,
                    626.3520446113924
                  ],
                  [
                    94091.70903371391,
                    2021042.0883443614,
                    626.3520446113924
                  ],
                  [
                    94580.14903371391,
                    2021042.0883443614,
                    669.5920446113925
                  ],
                  [
                    94580.14903371391,
                    2020561.3883443612,
                    669.5920446113925
                  ],
                  [
                    94091.70903371391,
                    2020561.3883443612,
                    626.3520446113924
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:23+00:00",
            "end_time": "2019-08-07T17:25:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000406.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70247463091607,
              68.1525775463887,
              635.225111104177
            ],
            [
              -151.70207769177944,
              68.1569223430089,
              635.225111104177
            ],
            [
              -151.6904249443592,
              68.15676914936034,
              687.985111104177
            ],
            [
              -151.6908238931334,
              68.15242438160688,
              687.985111104177
            ],
            [
              -151.70247463091607,
              68.1525775463887,
              635.225111104177
            ]
          ]
        ]
      },
      "bbox": [
        -151.7024746,
        68.15242438,
        635.2251111,
        -151.6904249,
        68.15692234,
        687.9851111
      ],
      "properties": {
        "datetime": "2019-08-07T20:21:44Z",
        "pc:count": 4694548,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96498.12923,
            "count": 4694548,
            "maximum": 96739.30356,
            "minimum": 96250.82356,
            "name": "X",
            "position": 0,
            "stddev": 129.1494125,
            "variance": 16679.57076
          },
          {
            "average": 2023211.32,
            "count": 4694548,
            "maximum": 2023446.706,
            "minimum": 2022965.926,
            "name": "Y",
            "position": 1,
            "stddev": 130.434049,
            "variance": 17013.04113
          },
          {
            "average": 654.360072,
            "count": 4694548,
            "maximum": 687.9851111,
            "minimum": 635.2251111,
            "name": "Z",
            "position": 2,
            "stddev": 12.90202606,
            "variance": 166.4622764
          },
          {
            "average": 51020.2809,
            "count": 4694548,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6765.31531,
            "variance": 45769491.25
          },
          {
            "average": 1.000022792,
            "count": 4694548,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004774084414,
            "variance": 2.279188199e-05
          },
          {
            "average": 1.000045585,
            "count": 4694548,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006751497981,
            "variance": 4.558272499e-05
          },
          {
            "average": 0.5006663048,
            "count": 4694548,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996093,
            "variance": 0.2499996093
          },
          {
            "average": 0.0005284853835,
            "count": 4694548,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02298273698,
            "variance": 0.0005282061992
          },
          {
            "average": 1.270731921,
            "count": 4694548,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4775997862,
            "variance": 0.2281015558
          },
          {
            "average": -2.958631819,
            "count": 4694548,
            "maximum": 21.38400078,
            "minimum": -20.91600037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.80015231,
            "variance": 116.6432898
          },
          {
            "average": 0.4766848693,
            "count": 4694548,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994561621,
            "variance": 0.2494564578
          },
          {
            "average": 422.5312995,
            "count": 4694548,
            "maximum": 638,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 122.3535619,
            "variance": 14970.39412
          },
          {
            "average": 249235669.3,
            "count": 4694548,
            "maximum": 249244504.7,
            "minimum": 249232903.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4305.218605,
            "variance": 18534907.24
          },
          {
            "average": 0.4766848693,
            "count": 4694548,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994561621,
            "variance": 0.2494564578
          },
          {
            "average": 0,
            "count": 4694548,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4694548,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4694548,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2008802551,
            "count": 4694548,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4006587231,
            "variance": 0.1605274124
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96250.82356,
          2022965.926,
          635.2251111,
          96739.30356,
          2023446.706,
          687.9851111
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96250.82356470186,
                2022965.925569263,
                635.225111104177
              ],
              [
                96250.82356470186,
                2023446.7055692628,
                635.225111104177
              ],
              [
                96739.30356470187,
                2023446.7055692628,
                687.985111104177
              ],
              [
                96739.30356470187,
                2022965.925569263,
                687.985111104177
              ],
              [
                96250.82356470186,
                2022965.925569263,
                635.225111104177
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:21:44+00:00",
        "end_time": "2019-08-07T17:08:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000406.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000406.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000406.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000406.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7024746,
            68.15242438,
            635.2251111,
            -151.6904249,
            68.15692234,
            687.9851111
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70247463091607,
                  68.1525775463887,
                  635.225111104177
                ],
                [
                  -151.70207769177944,
                  68.1569223430089,
                  635.225111104177
                ],
                [
                  -151.6904249443592,
                  68.15676914936034,
                  687.985111104177
                ],
                [
                  -151.6908238931334,
                  68.15242438160688,
                  687.985111104177
                ],
                [
                  -151.70247463091607,
                  68.1525775463887,
                  635.225111104177
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000406.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000406.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:21:44Z",
            "pc:count": 4694548,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96498.12923,
                "count": 4694548,
                "maximum": 96739.30356,
                "minimum": 96250.82356,
                "name": "X",
                "position": 0,
                "stddev": 129.1494125,
                "variance": 16679.57076
              },
              {
                "average": 2023211.32,
                "count": 4694548,
                "maximum": 2023446.706,
                "minimum": 2022965.926,
                "name": "Y",
                "position": 1,
                "stddev": 130.434049,
                "variance": 17013.04113
              },
              {
                "average": 654.360072,
                "count": 4694548,
                "maximum": 687.9851111,
                "minimum": 635.2251111,
                "name": "Z",
                "position": 2,
                "stddev": 12.90202606,
                "variance": 166.4622764
              },
              {
                "average": 51020.2809,
                "count": 4694548,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6765.31531,
                "variance": 45769491.25
              },
              {
                "average": 1.000022792,
                "count": 4694548,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004774084414,
                "variance": 2.279188199e-05
              },
              {
                "average": 1.000045585,
                "count": 4694548,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006751497981,
                "variance": 4.558272499e-05
              },
              {
                "average": 0.5006663048,
                "count": 4694548,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996093,
                "variance": 0.2499996093
              },
              {
                "average": 0.0005284853835,
                "count": 4694548,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02298273698,
                "variance": 0.0005282061992
              },
              {
                "average": 1.270731921,
                "count": 4694548,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4775997862,
                "variance": 0.2281015558
              },
              {
                "average": -2.958631819,
                "count": 4694548,
                "maximum": 21.38400078,
                "minimum": -20.91600037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.80015231,
                "variance": 116.6432898
              },
              {
                "average": 0.4766848693,
                "count": 4694548,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994561621,
                "variance": 0.2494564578
              },
              {
                "average": 422.5312995,
                "count": 4694548,
                "maximum": 638,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 122.3535619,
                "variance": 14970.39412
              },
              {
                "average": 249235669.3,
                "count": 4694548,
                "maximum": 249244504.7,
                "minimum": 249232903.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4305.218605,
                "variance": 18534907.24
              },
              {
                "average": 0.4766848693,
                "count": 4694548,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994561621,
                "variance": 0.2494564578
              },
              {
                "average": 0,
                "count": 4694548,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4694548,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4694548,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2008802551,
                "count": 4694548,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4006587231,
                "variance": 0.1605274124
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96250.82356,
              2022965.926,
              635.2251111,
              96739.30356,
              2023446.706,
              687.9851111
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96250.82356470186,
                    2022965.925569263,
                    635.225111104177
                  ],
                  [
                    96250.82356470186,
                    2023446.7055692628,
                    635.225111104177
                  ],
                  [
                    96739.30356470187,
                    2023446.7055692628,
                    687.985111104177
                  ],
                  [
                    96739.30356470187,
                    2022965.925569263,
                    687.985111104177
                  ],
                  [
                    96250.82356470186,
                    2022965.925569263,
                    635.225111104177
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:21:44+00:00",
            "end_time": "2019-08-07T17:08:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000246.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.74461237664656,
              68.12753362432893,
              624.8534424598205
            ],
            [
              -151.74422303748446,
              68.13187884457787,
              624.8534424598205
            ],
            [
              -151.73258114721065,
              68.131728460239,
              658.6534424598204
            ],
            [
              -151.73297249260685,
              68.12738326829414,
              658.6534424598204
            ],
            [
              -151.74461237664656,
              68.12753362432893,
              624.8534424598205
            ]
          ]
        ]
      },
      "bbox": [
        -151.7446124,
        68.12738327,
        624.8534425,
        -151.7325811,
        68.13187884,
        658.6534425
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:35Z",
        "pc:count": 4528711,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94826.49649,
            "count": 4528711,
            "maximum": 95068.76704,
            "minimum": 94580.26704,
            "name": "X",
            "position": 0,
            "stddev": 132.4759655,
            "variance": 17549.88143
          },
          {
            "average": 2020382.091,
            "count": 4528711,
            "maximum": 2020618.11,
            "minimum": 2020137.25,
            "name": "Y",
            "position": 1,
            "stddev": 132.0526217,
            "variance": 17437.89491
          },
          {
            "average": 636.1610796,
            "count": 4528711,
            "maximum": 658.6534425,
            "minimum": 624.8534425,
            "name": "Z",
            "position": 2,
            "stddev": 9.086975446,
            "variance": 82.57312276
          },
          {
            "average": 43724.32105,
            "count": 4528711,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13756.15007,
            "variance": 189231664.8
          },
          {
            "average": 1.062183478,
            "count": 4528711,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.2444015546,
            "variance": 0.05973211988
          },
          {
            "average": 1.124487078,
            "count": 4528711,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.3365342506,
            "variance": 0.1132553018
          },
          {
            "average": 0.3728645966,
            "count": 4528711,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4835665837,
            "variance": 0.2338366408
          },
          {
            "average": 0.0003996722246,
            "count": 4528711,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01998781066,
            "variance": 0.0003995125749
          },
          {
            "average": 1.699788527,
            "count": 4528711,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.054991705,
            "variance": 1.113007498
          },
          {
            "average": -1.502350165,
            "count": 4528711,
            "maximum": 21.27599907,
            "minimum": -20.95800018,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.20790401,
            "variance": 125.6171122
          },
          {
            "average": 0.5224484406,
            "count": 4528711,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994958685,
            "variance": 0.2494961226
          },
          {
            "average": 421.0187486,
            "count": 4528711,
            "maximum": 631,
            "minimum": 355,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 115.8740689,
            "variance": 13426.79984
          },
          {
            "average": 249235885.4,
            "count": 4528711,
            "maximum": 249242395.1,
            "minimum": 249233747,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3327.659528,
            "variance": 11073317.93
          },
          {
            "average": 0.5224484406,
            "count": 4528711,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994958685,
            "variance": 0.2494961226
          },
          {
            "average": 0,
            "count": 4528711,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4528711,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4528711,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2300769468,
            "count": 4528711,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4208819128,
            "variance": 0.1771415845
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94580.26704,
          2020137.25,
          624.8534425,
          95068.76704,
          2020618.11,
          658.6534425
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94580.26703627156,
                2020137.2497046085,
                624.8534424598205
              ],
              [
                94580.26703627156,
                2020618.1097046083,
                624.8534424598205
              ],
              [
                95068.76703627156,
                2020618.1097046083,
                658.6534424598204
              ],
              [
                95068.76703627156,
                2020137.2497046085,
                658.6534424598204
              ],
              [
                94580.26703627156,
                2020137.2497046085,
                624.8534424598205
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:35+00:00",
        "end_time": "2019-08-07T17:22:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000246.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000246.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000246.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000246.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7446124,
            68.12738327,
            624.8534425,
            -151.7325811,
            68.13187884,
            658.6534425
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.74461237664656,
                  68.12753362432893,
                  624.8534424598205
                ],
                [
                  -151.74422303748446,
                  68.13187884457787,
                  624.8534424598205
                ],
                [
                  -151.73258114721065,
                  68.131728460239,
                  658.6534424598204
                ],
                [
                  -151.73297249260685,
                  68.12738326829414,
                  658.6534424598204
                ],
                [
                  -151.74461237664656,
                  68.12753362432893,
                  624.8534424598205
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000246.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000246.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:35Z",
            "pc:count": 4528711,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94826.49649,
                "count": 4528711,
                "maximum": 95068.76704,
                "minimum": 94580.26704,
                "name": "X",
                "position": 0,
                "stddev": 132.4759655,
                "variance": 17549.88143
              },
              {
                "average": 2020382.091,
                "count": 4528711,
                "maximum": 2020618.11,
                "minimum": 2020137.25,
                "name": "Y",
                "position": 1,
                "stddev": 132.0526217,
                "variance": 17437.89491
              },
              {
                "average": 636.1610796,
                "count": 4528711,
                "maximum": 658.6534425,
                "minimum": 624.8534425,
                "name": "Z",
                "position": 2,
                "stddev": 9.086975446,
                "variance": 82.57312276
              },
              {
                "average": 43724.32105,
                "count": 4528711,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13756.15007,
                "variance": 189231664.8
              },
              {
                "average": 1.062183478,
                "count": 4528711,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.2444015546,
                "variance": 0.05973211988
              },
              {
                "average": 1.124487078,
                "count": 4528711,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.3365342506,
                "variance": 0.1132553018
              },
              {
                "average": 0.3728645966,
                "count": 4528711,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4835665837,
                "variance": 0.2338366408
              },
              {
                "average": 0.0003996722246,
                "count": 4528711,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01998781066,
                "variance": 0.0003995125749
              },
              {
                "average": 1.699788527,
                "count": 4528711,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.054991705,
                "variance": 1.113007498
              },
              {
                "average": -1.502350165,
                "count": 4528711,
                "maximum": 21.27599907,
                "minimum": -20.95800018,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.20790401,
                "variance": 125.6171122
              },
              {
                "average": 0.5224484406,
                "count": 4528711,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994958685,
                "variance": 0.2494961226
              },
              {
                "average": 421.0187486,
                "count": 4528711,
                "maximum": 631,
                "minimum": 355,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 115.8740689,
                "variance": 13426.79984
              },
              {
                "average": 249235885.4,
                "count": 4528711,
                "maximum": 249242395.1,
                "minimum": 249233747,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3327.659528,
                "variance": 11073317.93
              },
              {
                "average": 0.5224484406,
                "count": 4528711,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994958685,
                "variance": 0.2494961226
              },
              {
                "average": 0,
                "count": 4528711,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4528711,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4528711,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2300769468,
                "count": 4528711,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4208819128,
                "variance": 0.1771415845
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94580.26704,
              2020137.25,
              624.8534425,
              95068.76704,
              2020618.11,
              658.6534425
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94580.26703627156,
                    2020137.2497046085,
                    624.8534424598205
                  ],
                  [
                    94580.26703627156,
                    2020618.1097046083,
                    624.8534424598205
                  ],
                  [
                    95068.76703627156,
                    2020618.1097046083,
                    658.6534424598204
                  ],
                  [
                    95068.76703627156,
                    2020137.2497046085,
                    658.6534424598204
                  ],
                  [
                    94580.26703627156,
                    2020137.2497046085,
                    624.8534424598205
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:35+00:00",
            "end_time": "2019-08-07T17:22:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000243.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.77757772468158,
              68.1271830608983,
              619.8417975920638
            ],
            [
              -151.77719407940444,
              68.13152834840481,
              619.8417975920638
            ],
            [
              -151.76555263183337,
              68.13138016190621,
              710.9017975920638
            ],
            [
              -151.76593828334165,
              68.12703490229009,
              710.9017975920638
            ],
            [
              -151.77757772468158,
              68.1271830608983,
              619.8417975920638
            ]
          ]
        ]
      },
      "bbox": [
        -151.7775777,
        68.1270349,
        619.8417976,
        -151.7655526,
        68.13152835,
        710.9017976
      ],
      "properties": {
        "datetime": "2019-08-07T19:51:13Z",
        "pc:count": 5737762,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 93443.22347,
            "count": 5737762,
            "maximum": 93688.15377,
            "minimum": 93199.67377,
            "name": "X",
            "position": 0,
            "stddev": 135.4834497,
            "variance": 18355.76513
          },
          {
            "average": 2020293.497,
            "count": 5737762,
            "maximum": 2020532.754,
            "minimum": 2020051.894,
            "name": "Y",
            "position": 1,
            "stddev": 129.7396693,
            "variance": 16832.38178
          },
          {
            "average": 674.2939313,
            "count": 5737762,
            "maximum": 710.9017976,
            "minimum": 619.8417976,
            "name": "Z",
            "position": 2,
            "stddev": 19.247045,
            "variance": 370.4487413
          },
          {
            "average": 53521.03579,
            "count": 5737762,
            "maximum": 65535,
            "minimum": 14443,
            "name": "Intensity",
            "position": 3,
            "stddev": 3428.46791,
            "variance": 11754392.21
          },
          {
            "average": 1.000000174,
            "count": 5737762,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000417473329,
            "variance": 1.742839804e-07
          },
          {
            "average": 1.000000349,
            "count": 5737762,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0005903963923,
            "variance": 3.485679001e-07
          },
          {
            "average": 0.5038684072,
            "count": 5737762,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999850788,
            "variance": 0.249985079
          },
          {
            "average": 0.0004437270141,
            "count": 5737762,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02106015664,
            "variance": 0.0004435301978
          },
          {
            "average": 1.229181866,
            "count": 5737762,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4235305683,
            "variance": 0.1793781423
          },
          {
            "average": -1.521896453,
            "count": 5737762,
            "maximum": 21.48600006,
            "minimum": -21.43799973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.66458098,
            "variance": 113.7332875
          },
          {
            "average": 0.4819666623,
            "count": 5737762,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996747364,
            "variance": 0.2496748422
          },
          {
            "average": 405.3610355,
            "count": 5737762,
            "maximum": 632,
            "minimum": 359,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 99.91543474,
            "variance": 9983.094099
          },
          {
            "average": 249236031.7,
            "count": 5737762,
            "maximum": 249242673.4,
            "minimum": 249234392.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 2856.849826,
            "variance": 8161590.926
          },
          {
            "average": 0.4819666623,
            "count": 5737762,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996747364,
            "variance": 0.2496748422
          },
          {
            "average": 0,
            "count": 5737762,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5737762,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5737762,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2228093462,
            "count": 5737762,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4161314355,
            "variance": 0.1731653716
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93199.67377,
          2020051.894,
          619.8417976,
          93688.15377,
          2020532.754,
          710.9017976
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93199.67377386084,
                2020051.8935566808,
                619.8417975920638
              ],
              [
                93199.67377386084,
                2020532.7535566806,
                619.8417975920638
              ],
              [
                93688.15377386085,
                2020532.7535566806,
                710.9017975920638
              ],
              [
                93688.15377386085,
                2020051.8935566808,
                710.9017975920638
              ],
              [
                93199.67377386084,
                2020051.8935566808,
                619.8417975920638
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:51:13+00:00",
        "end_time": "2019-08-07T17:33:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000243.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000243.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000243.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000243.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7775777,
            68.1270349,
            619.8417976,
            -151.7655526,
            68.13152835,
            710.9017976
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.77757772468158,
                  68.1271830608983,
                  619.8417975920638
                ],
                [
                  -151.77719407940444,
                  68.13152834840481,
                  619.8417975920638
                ],
                [
                  -151.76555263183337,
                  68.13138016190621,
                  710.9017975920638
                ],
                [
                  -151.76593828334165,
                  68.12703490229009,
                  710.9017975920638
                ],
                [
                  -151.77757772468158,
                  68.1271830608983,
                  619.8417975920638
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000243.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000243.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:51:13Z",
            "pc:count": 5737762,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 93443.22347,
                "count": 5737762,
                "maximum": 93688.15377,
                "minimum": 93199.67377,
                "name": "X",
                "position": 0,
                "stddev": 135.4834497,
                "variance": 18355.76513
              },
              {
                "average": 2020293.497,
                "count": 5737762,
                "maximum": 2020532.754,
                "minimum": 2020051.894,
                "name": "Y",
                "position": 1,
                "stddev": 129.7396693,
                "variance": 16832.38178
              },
              {
                "average": 674.2939313,
                "count": 5737762,
                "maximum": 710.9017976,
                "minimum": 619.8417976,
                "name": "Z",
                "position": 2,
                "stddev": 19.247045,
                "variance": 370.4487413
              },
              {
                "average": 53521.03579,
                "count": 5737762,
                "maximum": 65535,
                "minimum": 14443,
                "name": "Intensity",
                "position": 3,
                "stddev": 3428.46791,
                "variance": 11754392.21
              },
              {
                "average": 1.000000174,
                "count": 5737762,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000417473329,
                "variance": 1.742839804e-07
              },
              {
                "average": 1.000000349,
                "count": 5737762,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0005903963923,
                "variance": 3.485679001e-07
              },
              {
                "average": 0.5038684072,
                "count": 5737762,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999850788,
                "variance": 0.249985079
              },
              {
                "average": 0.0004437270141,
                "count": 5737762,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02106015664,
                "variance": 0.0004435301978
              },
              {
                "average": 1.229181866,
                "count": 5737762,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4235305683,
                "variance": 0.1793781423
              },
              {
                "average": -1.521896453,
                "count": 5737762,
                "maximum": 21.48600006,
                "minimum": -21.43799973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.66458098,
                "variance": 113.7332875
              },
              {
                "average": 0.4819666623,
                "count": 5737762,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996747364,
                "variance": 0.2496748422
              },
              {
                "average": 405.3610355,
                "count": 5737762,
                "maximum": 632,
                "minimum": 359,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 99.91543474,
                "variance": 9983.094099
              },
              {
                "average": 249236031.7,
                "count": 5737762,
                "maximum": 249242673.4,
                "minimum": 249234392.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 2856.849826,
                "variance": 8161590.926
              },
              {
                "average": 0.4819666623,
                "count": 5737762,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996747364,
                "variance": 0.2496748422
              },
              {
                "average": 0,
                "count": 5737762,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5737762,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5737762,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2228093462,
                "count": 5737762,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4161314355,
                "variance": 0.1731653716
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93199.67377,
              2020051.894,
              619.8417976,
              93688.15377,
              2020532.754,
              710.9017976
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93199.67377386084,
                    2020051.8935566808,
                    619.8417975920638
                  ],
                  [
                    93199.67377386084,
                    2020532.7535566806,
                    619.8417975920638
                  ],
                  [
                    93688.15377386085,
                    2020532.7535566806,
                    710.9017975920638
                  ],
                  [
                    93688.15377386085,
                    2020051.8935566808,
                    710.9017975920638
                  ],
                  [
                    93199.67377386084,
                    2020051.8935566808,
                    619.8417975920638
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:51:13+00:00",
            "end_time": "2019-08-07T17:33:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000379.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.71316812787856,
              68.1483686425615,
              644.5833096848028
            ],
            [
              -151.71277334812635,
              68.1527106859186,
              644.5833096848028
            ],
            [
              -151.70112391705646,
              68.15255822439148,
              1529.923309684803
            ],
            [
              -151.70152070431854,
              68.14821620973882,
              1529.923309684803
            ],
            [
              -151.71316812787856,
              68.1483686425615,
              644.5833096848028
            ]
          ]
        ]
      },
      "bbox": [
        -151.7131681,
        68.14821621,
        644.5833097,
        -151.7011239,
        68.15271069,
        1529.92331
      ],
      "properties": {
        "datetime": "2019-08-07T19:52:03Z",
        "pc:count": 3701737,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96086.18082,
            "count": 3701737,
            "maximum": 96307.46073,
            "minimum": 95819.04073,
            "name": "X",
            "position": 0,
            "stddev": 133.3972607,
            "variance": 17794.82915
          },
          {
            "average": 2022732.487,
            "count": 3701737,
            "maximum": 2022965.748,
            "minimum": 2022485.268,
            "name": "Y",
            "position": 1,
            "stddev": 132.5016015,
            "variance": 17556.67441
          },
          {
            "average": 655.1578507,
            "count": 3701737,
            "maximum": 1529.92331,
            "minimum": 644.5833097,
            "name": "Z",
            "position": 2,
            "stddev": 9.76677153,
            "variance": 95.38982611
          },
          {
            "average": 48489.96057,
            "count": 3701737,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 11919.23952,
            "variance": 142068270.7
          },
          {
            "average": 1.000044574,
            "count": 3701737,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006676203584,
            "variance": 4.457169429e-05
          },
          {
            "average": 1.000089417,
            "count": 3701737,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009455660223,
            "variance": 8.940951024e-05
          },
          {
            "average": 0.5011166379,
            "count": 3701737,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988207,
            "variance": 0.2499988207
          },
          {
            "average": 0.0005775666937,
            "count": 3701737,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02402567931,
            "variance": 0.0005772332663
          },
          {
            "average": 1.912516205,
            "count": 3701737,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.188153799,
            "variance": 4.788017047
          },
          {
            "average": 2.579939451,
            "count": 3701737,
            "maximum": 21.49200058,
            "minimum": -20.9279995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73280513,
            "variance": 115.1931059
          },
          {
            "average": 0.514593014,
            "count": 3701737,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997870661,
            "variance": 0.2497871114
          },
          {
            "average": 418.5919772,
            "count": 3701737,
            "maximum": 632,
            "minimum": 351,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.3354024,
            "variance": 14003.26747
          },
          {
            "average": 249235504.1,
            "count": 3701737,
            "maximum": 249242723.8,
            "minimum": 249233124.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3809.968078,
            "variance": 14515856.76
          },
          {
            "average": 0.514593014,
            "count": 3701737,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997870661,
            "variance": 0.2497871114
          },
          {
            "average": 0,
            "count": 3701737,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3701737,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3701737,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2780694577,
            "count": 3701737,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4480478642,
            "variance": 0.2007468886
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95819.04073,
          2022485.268,
          644.5833097,
          96307.46073,
          2022965.748,
          1529.92331
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95819.0407264432,
                2022485.268198294,
                644.5833096848028
              ],
              [
                95819.0407264432,
                2022965.748198294,
                644.5833096848028
              ],
              [
                96307.46072644321,
                2022965.748198294,
                1529.923309684803
              ],
              [
                96307.46072644321,
                2022485.268198294,
                1529.923309684803
              ],
              [
                95819.0407264432,
                2022485.268198294,
                644.5833096848028
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:52:03+00:00",
        "end_time": "2019-08-07T17:12:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000379.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000379.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000379.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000379.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7131681,
            68.14821621,
            644.5833097,
            -151.7011239,
            68.15271069,
            1529.92331
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.71316812787856,
                  68.1483686425615,
                  644.5833096848028
                ],
                [
                  -151.71277334812635,
                  68.1527106859186,
                  644.5833096848028
                ],
                [
                  -151.70112391705646,
                  68.15255822439148,
                  1529.923309684803
                ],
                [
                  -151.70152070431854,
                  68.14821620973882,
                  1529.923309684803
                ],
                [
                  -151.71316812787856,
                  68.1483686425615,
                  644.5833096848028
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000379.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000379.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:52:03Z",
            "pc:count": 3701737,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96086.18082,
                "count": 3701737,
                "maximum": 96307.46073,
                "minimum": 95819.04073,
                "name": "X",
                "position": 0,
                "stddev": 133.3972607,
                "variance": 17794.82915
              },
              {
                "average": 2022732.487,
                "count": 3701737,
                "maximum": 2022965.748,
                "minimum": 2022485.268,
                "name": "Y",
                "position": 1,
                "stddev": 132.5016015,
                "variance": 17556.67441
              },
              {
                "average": 655.1578507,
                "count": 3701737,
                "maximum": 1529.92331,
                "minimum": 644.5833097,
                "name": "Z",
                "position": 2,
                "stddev": 9.76677153,
                "variance": 95.38982611
              },
              {
                "average": 48489.96057,
                "count": 3701737,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 11919.23952,
                "variance": 142068270.7
              },
              {
                "average": 1.000044574,
                "count": 3701737,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006676203584,
                "variance": 4.457169429e-05
              },
              {
                "average": 1.000089417,
                "count": 3701737,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009455660223,
                "variance": 8.940951024e-05
              },
              {
                "average": 0.5011166379,
                "count": 3701737,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988207,
                "variance": 0.2499988207
              },
              {
                "average": 0.0005775666937,
                "count": 3701737,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02402567931,
                "variance": 0.0005772332663
              },
              {
                "average": 1.912516205,
                "count": 3701737,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.188153799,
                "variance": 4.788017047
              },
              {
                "average": 2.579939451,
                "count": 3701737,
                "maximum": 21.49200058,
                "minimum": -20.9279995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73280513,
                "variance": 115.1931059
              },
              {
                "average": 0.514593014,
                "count": 3701737,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997870661,
                "variance": 0.2497871114
              },
              {
                "average": 418.5919772,
                "count": 3701737,
                "maximum": 632,
                "minimum": 351,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.3354024,
                "variance": 14003.26747
              },
              {
                "average": 249235504.1,
                "count": 3701737,
                "maximum": 249242723.8,
                "minimum": 249233124.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3809.968078,
                "variance": 14515856.76
              },
              {
                "average": 0.514593014,
                "count": 3701737,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997870661,
                "variance": 0.2497871114
              },
              {
                "average": 0,
                "count": 3701737,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3701737,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3701737,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2780694577,
                "count": 3701737,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4480478642,
                "variance": 0.2007468886
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95819.04073,
              2022485.268,
              644.5833097,
              96307.46073,
              2022965.748,
              1529.92331
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95819.0407264432,
                    2022485.268198294,
                    644.5833096848028
                  ],
                  [
                    95819.0407264432,
                    2022965.748198294,
                    644.5833096848028
                  ],
                  [
                    96307.46072644321,
                    2022965.748198294,
                    1529.923309684803
                  ],
                  [
                    96307.46072644321,
                    2022485.268198294,
                    1529.923309684803
                  ],
                  [
                    95819.0407264432,
                    2022485.268198294,
                    644.5833096848028
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:52:03+00:00",
            "end_time": "2019-08-07T17:12:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000300.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.72324657014653,
              68.13595898539708,
              625.2841765207002
            ],
            [
              -151.7228533962221,
              68.14030447092932,
              625.2841765207002
            ],
            [
              -151.71120773793774,
              68.14015266143075,
              680.2841765207002
            ],
            [
              -151.71160291943423,
              68.13580720448478,
              680.2841765207002
            ],
            [
              -151.72324657014653,
              68.13595898539708,
              625.2841765207002
            ]
          ]
        ]
      },
      "bbox": [
        -151.7232466,
        68.1358072,
        625.2841765,
        -151.7112077,
        68.14030447,
        680.2841765
      ],
      "properties": {
        "datetime": "2019-08-07T19:46:16Z",
        "pc:count": 4224918,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95693.05226,
            "count": 4224918,
            "maximum": 95932.4585,
            "minimum": 95443.9585,
            "name": "X",
            "position": 0,
            "stddev": 131.0157137,
            "variance": 17165.11722
          },
          {
            "average": 2021339.267,
            "count": 4224918,
            "maximum": 2021579.995,
            "minimum": 2021099.115,
            "name": "Y",
            "position": 1,
            "stddev": 130.0876417,
            "variance": 16922.79451
          },
          {
            "average": 666.2834438,
            "count": 4224918,
            "maximum": 680.2841765,
            "minimum": 625.2841765,
            "name": "Z",
            "position": 2,
            "stddev": 6.844089805,
            "variance": 46.84156526
          },
          {
            "average": 50995.43798,
            "count": 4224918,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 7453.430514,
            "variance": 55553626.43
          },
          {
            "average": 1.000070771,
            "count": 4224918,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008412229941,
            "variance": 7.076561258e-05
          },
          {
            "average": 1.000141068,
            "count": 4224918,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01187636139,
            "variance": 0.0001410479599
          },
          {
            "average": 0.5075641705,
            "count": 4224918,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999428392,
            "variance": 0.2499428425
          },
          {
            "average": 0.0005417856631,
            "count": 4224918,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02326998624,
            "variance": 0.0005414922595
          },
          {
            "average": 1.295801481,
            "count": 4224918,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.494072128,
            "variance": 0.2441072677
          },
          {
            "average": -1.10246387,
            "count": 4224918,
            "maximum": 21.47400093,
            "minimum": -21.03000069,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.1913507,
            "variance": 125.2463305
          },
          {
            "average": 0.5107682563,
            "count": 4224918,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998840904,
            "variance": 0.2498841038
          },
          {
            "average": 417.6575486,
            "count": 4224918,
            "maximum": 631,
            "minimum": 353,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 116.024955,
            "variance": 13461.79018
          },
          {
            "average": 249235538.5,
            "count": 4224918,
            "maximum": 249242376.5,
            "minimum": 249233430.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3485.743568,
            "variance": 12150408.22
          },
          {
            "average": 0.5107682563,
            "count": 4224918,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998840904,
            "variance": 0.2498841038
          },
          {
            "average": 0,
            "count": 4224918,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4224918,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4224918,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2614779742,
            "count": 4224918,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4394397444,
            "variance": 0.1931072889
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          95443.9585,
          2021099.115,
          625.2841765,
          95932.4585,
          2021579.995,
          680.2841765
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                95443.95849652553,
                2021099.1152802058,
                625.2841765207002
              ],
              [
                95443.95849652553,
                2021579.9952802057,
                625.2841765207002
              ],
              [
                95932.45849652553,
                2021579.9952802057,
                680.2841765207002
              ],
              [
                95932.45849652553,
                2021099.1152802058,
                680.2841765207002
              ],
              [
                95443.95849652553,
                2021099.1152802058,
                625.2841765207002
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:46:16+00:00",
        "end_time": "2019-08-07T17:17:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000300.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000300.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000300.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000300.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7232466,
            68.1358072,
            625.2841765,
            -151.7112077,
            68.14030447,
            680.2841765
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.72324657014653,
                  68.13595898539708,
                  625.2841765207002
                ],
                [
                  -151.7228533962221,
                  68.14030447092932,
                  625.2841765207002
                ],
                [
                  -151.71120773793774,
                  68.14015266143075,
                  680.2841765207002
                ],
                [
                  -151.71160291943423,
                  68.13580720448478,
                  680.2841765207002
                ],
                [
                  -151.72324657014653,
                  68.13595898539708,
                  625.2841765207002
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000300.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000300.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:46:16Z",
            "pc:count": 4224918,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95693.05226,
                "count": 4224918,
                "maximum": 95932.4585,
                "minimum": 95443.9585,
                "name": "X",
                "position": 0,
                "stddev": 131.0157137,
                "variance": 17165.11722
              },
              {
                "average": 2021339.267,
                "count": 4224918,
                "maximum": 2021579.995,
                "minimum": 2021099.115,
                "name": "Y",
                "position": 1,
                "stddev": 130.0876417,
                "variance": 16922.79451
              },
              {
                "average": 666.2834438,
                "count": 4224918,
                "maximum": 680.2841765,
                "minimum": 625.2841765,
                "name": "Z",
                "position": 2,
                "stddev": 6.844089805,
                "variance": 46.84156526
              },
              {
                "average": 50995.43798,
                "count": 4224918,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 7453.430514,
                "variance": 55553626.43
              },
              {
                "average": 1.000070771,
                "count": 4224918,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008412229941,
                "variance": 7.076561258e-05
              },
              {
                "average": 1.000141068,
                "count": 4224918,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01187636139,
                "variance": 0.0001410479599
              },
              {
                "average": 0.5075641705,
                "count": 4224918,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999428392,
                "variance": 0.2499428425
              },
              {
                "average": 0.0005417856631,
                "count": 4224918,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02326998624,
                "variance": 0.0005414922595
              },
              {
                "average": 1.295801481,
                "count": 4224918,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.494072128,
                "variance": 0.2441072677
              },
              {
                "average": -1.10246387,
                "count": 4224918,
                "maximum": 21.47400093,
                "minimum": -21.03000069,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.1913507,
                "variance": 125.2463305
              },
              {
                "average": 0.5107682563,
                "count": 4224918,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998840904,
                "variance": 0.2498841038
              },
              {
                "average": 417.6575486,
                "count": 4224918,
                "maximum": 631,
                "minimum": 353,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 116.024955,
                "variance": 13461.79018
              },
              {
                "average": 249235538.5,
                "count": 4224918,
                "maximum": 249242376.5,
                "minimum": 249233430.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3485.743568,
                "variance": 12150408.22
              },
              {
                "average": 0.5107682563,
                "count": 4224918,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998840904,
                "variance": 0.2498841038
              },
              {
                "average": 0,
                "count": 4224918,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4224918,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4224918,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2614779742,
                "count": 4224918,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4394397444,
                "variance": 0.1931072889
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              95443.9585,
              2021099.115,
              625.2841765,
              95932.4585,
              2021579.995,
              680.2841765
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    95443.95849652553,
                    2021099.1152802058,
                    625.2841765207002
                  ],
                  [
                    95443.95849652553,
                    2021579.9952802057,
                    625.2841765207002
                  ],
                  [
                    95932.45849652553,
                    2021579.9952802057,
                    680.2841765207002
                  ],
                  [
                    95932.45849652553,
                    2021099.1152802058,
                    680.2841765207002
                  ],
                  [
                    95443.95849652553,
                    2021099.1152802058,
                    625.2841765207002
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:46:16+00:00",
            "end_time": "2019-08-07T17:17:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000401.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.7574789034867,
              68.1520029451891,
              674.8709720658446
            ],
            [
              -151.75709150476436,
              68.1563474943328,
              674.8709720658446
            ],
            [
              -151.7454372604584,
              68.15619793944654,
              724.6709720658446
            ],
            [
              -151.74582666903498,
              68.1518534184815,
              724.6709720658446
            ],
            [
              -151.7574789034867,
              68.1520029451891,
              674.8709720658446
            ]
          ]
        ]
      },
      "bbox": [
        -151.7574789,
        68.15185342,
        674.8709721,
        -151.7454373,
        68.15634749,
        724.6709721
      ],
      "properties": {
        "datetime": "2019-08-07T20:08:22Z",
        "pc:count": 4881278,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 94188.44898,
            "count": 4881278,
            "maximum": 94438.08736,
            "minimum": 93949.54736,
            "name": "X",
            "position": 0,
            "stddev": 133.0205182,
            "variance": 17694.45825
          },
          {
            "average": 2023064.279,
            "count": 4881278,
            "maximum": 2023304.391,
            "minimum": 2022823.651,
            "name": "Y",
            "position": 1,
            "stddev": 129.8875349,
            "variance": 16870.77172
          },
          {
            "average": 699.0013809,
            "count": 4881278,
            "maximum": 724.6709721,
            "minimum": 674.8709721,
            "name": "Z",
            "position": 2,
            "stddev": 9.150064626,
            "variance": 83.72368265
          },
          {
            "average": 49671.01897,
            "count": 4881278,
            "maximum": 65535,
            "minimum": 1083,
            "name": "Intensity",
            "position": 3,
            "stddev": 6293.310351,
            "variance": 39605755.18
          },
          {
            "average": 1.000042202,
            "count": 4881278,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006496175051,
            "variance": 4.220029029e-05
          },
          {
            "average": 1.000084404,
            "count": 4881278,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009186784995,
            "variance": 8.439701855e-05
          },
          {
            "average": 0.5092121367,
            "count": 4881278,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999151805,
            "variance": 0.2499151877
          },
          {
            "average": 0.0005240430887,
            "count": 4881278,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0228859908,
            "variance": 0.0005237685749
          },
          {
            "average": 1.246122225,
            "count": 4881278,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4489474462,
            "variance": 0.2015538095
          },
          {
            "average": -2.39488463,
            "count": 4881278,
            "maximum": 21.51000023,
            "minimum": -21.0720005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.04074223,
            "variance": 121.8979889
          },
          {
            "average": 0.5005781273,
            "count": 4881278,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499999717,
            "variance": 0.249999717
          },
          {
            "average": 425.1022581,
            "count": 4881278,
            "maximum": 635,
            "minimum": 356,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 118.1077708,
            "variance": 13949.44552
          },
          {
            "average": 249236456.3,
            "count": 4881278,
            "maximum": 249243702.8,
            "minimum": 249233904.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3833.951397,
            "variance": 14699183.31
          },
          {
            "average": 0.5005781273,
            "count": 4881278,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499999717,
            "variance": 0.249999717
          },
          {
            "average": 0,
            "count": 4881278,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4881278,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4881278,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2431105133,
            "count": 4881278,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4289613378,
            "variance": 0.1840078293
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          93949.54736,
          2022823.651,
          674.8709721,
          94438.08736,
          2023304.391,
          724.6709721
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                93949.547362075,
                2022823.6510543078,
                674.8709720658446
              ],
              [
                93949.547362075,
                2023304.391054308,
                674.8709720658446
              ],
              [
                94438.087362075,
                2023304.391054308,
                724.6709720658446
              ],
              [
                94438.087362075,
                2022823.6510543078,
                724.6709720658446
              ],
              [
                93949.547362075,
                2022823.6510543078,
                674.8709720658446
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:08:22+00:00",
        "end_time": "2019-08-07T17:25:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000401.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000401.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000401.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000401.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7574789,
            68.15185342,
            674.8709721,
            -151.7454373,
            68.15634749,
            724.6709721
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.7574789034867,
                  68.1520029451891,
                  674.8709720658446
                ],
                [
                  -151.75709150476436,
                  68.1563474943328,
                  674.8709720658446
                ],
                [
                  -151.7454372604584,
                  68.15619793944654,
                  724.6709720658446
                ],
                [
                  -151.74582666903498,
                  68.1518534184815,
                  724.6709720658446
                ],
                [
                  -151.7574789034867,
                  68.1520029451891,
                  674.8709720658446
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000401.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000401.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:08:22Z",
            "pc:count": 4881278,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 94188.44898,
                "count": 4881278,
                "maximum": 94438.08736,
                "minimum": 93949.54736,
                "name": "X",
                "position": 0,
                "stddev": 133.0205182,
                "variance": 17694.45825
              },
              {
                "average": 2023064.279,
                "count": 4881278,
                "maximum": 2023304.391,
                "minimum": 2022823.651,
                "name": "Y",
                "position": 1,
                "stddev": 129.8875349,
                "variance": 16870.77172
              },
              {
                "average": 699.0013809,
                "count": 4881278,
                "maximum": 724.6709721,
                "minimum": 674.8709721,
                "name": "Z",
                "position": 2,
                "stddev": 9.150064626,
                "variance": 83.72368265
              },
              {
                "average": 49671.01897,
                "count": 4881278,
                "maximum": 65535,
                "minimum": 1083,
                "name": "Intensity",
                "position": 3,
                "stddev": 6293.310351,
                "variance": 39605755.18
              },
              {
                "average": 1.000042202,
                "count": 4881278,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006496175051,
                "variance": 4.220029029e-05
              },
              {
                "average": 1.000084404,
                "count": 4881278,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009186784995,
                "variance": 8.439701855e-05
              },
              {
                "average": 0.5092121367,
                "count": 4881278,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999151805,
                "variance": 0.2499151877
              },
              {
                "average": 0.0005240430887,
                "count": 4881278,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0228859908,
                "variance": 0.0005237685749
              },
              {
                "average": 1.246122225,
                "count": 4881278,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4489474462,
                "variance": 0.2015538095
              },
              {
                "average": -2.39488463,
                "count": 4881278,
                "maximum": 21.51000023,
                "minimum": -21.0720005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.04074223,
                "variance": 121.8979889
              },
              {
                "average": 0.5005781273,
                "count": 4881278,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499999717,
                "variance": 0.249999717
              },
              {
                "average": 425.1022581,
                "count": 4881278,
                "maximum": 635,
                "minimum": 356,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 118.1077708,
                "variance": 13949.44552
              },
              {
                "average": 249236456.3,
                "count": 4881278,
                "maximum": 249243702.8,
                "minimum": 249233904.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3833.951397,
                "variance": 14699183.31
              },
              {
                "average": 0.5005781273,
                "count": 4881278,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499999717,
                "variance": 0.249999717
              },
              {
                "average": 0,
                "count": 4881278,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4881278,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4881278,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2431105133,
                "count": 4881278,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4289613378,
                "variance": 0.1840078293
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              93949.54736,
              2022823.651,
              674.8709721,
              94438.08736,
              2023304.391,
              724.6709721
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    93949.547362075,
                    2022823.6510543078,
                    674.8709720658446
                  ],
                  [
                    93949.547362075,
                    2023304.391054308,
                    674.8709720658446
                  ],
                  [
                    94438.087362075,
                    2023304.391054308,
                    724.6709720658446
                  ],
                  [
                    94438.087362075,
                    2022823.6510543078,
                    724.6709720658446
                  ],
                  [
                    93949.547362075,
                    2022823.6510543078,
                    674.8709720658446
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:08:22+00:00",
            "end_time": "2019-08-07T17:25:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000328.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.70156154717856,
              68.14028432114597,
              690.7874233499109
            ],
            [
              -151.7011646112733,
              68.14462928357975,
              690.7874233499109
            ],
            [
              -151.6895189911809,
              68.14447605512936,
              736.927423349911
            ],
            [
              -151.6899179346779,
              68.14013112155196,
              736.927423349911
            ],
            [
              -151.70156154717856,
              68.14028432114597,
              690.7874233499109
            ]
          ]
        ]
      },
      "bbox": [
        -151.7015615,
        68.14013112,
        690.7874233,
        -151.689519,
        68.14462928,
        736.9274233
      ],
      "properties": {
        "datetime": "2019-08-07T19:40:30Z",
        "pc:count": 4661640,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 96578.3175,
            "count": 4661640,
            "maximum": 96824.52407,
            "minimum": 96336.10407,
            "name": "X",
            "position": 0,
            "stddev": 130.2827205,
            "variance": 16973.58726
          },
          {
            "average": 2021851.129,
            "count": 4661640,
            "maximum": 2022089.331,
            "minimum": 2021608.511,
            "name": "Y",
            "position": 1,
            "stddev": 132.2337966,
            "variance": 17485.77698
          },
          {
            "average": 712.5675765,
            "count": 4661640,
            "maximum": 736.9274233,
            "minimum": 690.7874233,
            "name": "Z",
            "position": 2,
            "stddev": 11.62297187,
            "variance": 135.0934751
          },
          {
            "average": 49266.77496,
            "count": 4661640,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9263.431351,
            "variance": 85811160.4
          },
          {
            "average": 1.000137934,
            "count": 4661640,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01178021053,
            "variance": 0.0001387733602
          },
          {
            "average": 1.000275869,
            "count": 4661640,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01668432606,
            "variance": 0.000278366736
          },
          {
            "average": 0.5040676672,
            "count": 4661640,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999835074,
            "variance": 0.2499835077
          },
          {
            "average": 0.0003932092568,
            "count": 4661640,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01982560788,
            "variance": 0.0003930547276
          },
          {
            "average": 1.285161231,
            "count": 4661640,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5069646933,
            "variance": 0.2570132003
          },
          {
            "average": -3.629783661,
            "count": 4661640,
            "maximum": 21.39599991,
            "minimum": -21.38400078,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41990434,
            "variance": 108.5744065
          },
          {
            "average": 0.4822575317,
            "count": 4661640,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996851593,
            "variance": 0.2496852584
          },
          {
            "average": 416.5778696,
            "count": 4661640,
            "maximum": 630,
            "minimum": 350,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 117.7528246,
            "variance": 13865.72769
          },
          {
            "average": 249235206.9,
            "count": 4661640,
            "maximum": 249242030.4,
            "minimum": 249232926.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3667.309895,
            "variance": 13449161.87
          },
          {
            "average": 0.4822575317,
            "count": 4661640,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996851593,
            "variance": 0.2496852584
          },
          {
            "average": 0,
            "count": 4661640,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4661640,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4661640,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.166293193,
            "count": 4661640,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.372343654,
            "variance": 0.1386397967
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          96336.10407,
          2021608.511,
          690.7874233,
          96824.52407,
          2022089.331,
          736.9274233
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                96336.1040699781,
                2021608.5111311222,
                690.7874233499109
              ],
              [
                96336.1040699781,
                2022089.331131122,
                690.7874233499109
              ],
              [
                96824.52406997811,
                2022089.331131122,
                736.927423349911
              ],
              [
                96824.52406997811,
                2021608.5111311222,
                736.927423349911
              ],
              [
                96336.1040699781,
                2021608.5111311222,
                690.7874233499109
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T19:40:30+00:00",
        "end_time": "2019-08-07T17:08:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000328.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000328.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000328.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000328.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7015615,
            68.14013112,
            690.7874233,
            -151.689519,
            68.14462928,
            736.9274233
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.70156154717856,
                  68.14028432114597,
                  690.7874233499109
                ],
                [
                  -151.7011646112733,
                  68.14462928357975,
                  690.7874233499109
                ],
                [
                  -151.6895189911809,
                  68.14447605512936,
                  736.927423349911
                ],
                [
                  -151.6899179346779,
                  68.14013112155196,
                  736.927423349911
                ],
                [
                  -151.70156154717856,
                  68.14028432114597,
                  690.7874233499109
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000328.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000328.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T19:40:30Z",
            "pc:count": 4661640,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 96578.3175,
                "count": 4661640,
                "maximum": 96824.52407,
                "minimum": 96336.10407,
                "name": "X",
                "position": 0,
                "stddev": 130.2827205,
                "variance": 16973.58726
              },
              {
                "average": 2021851.129,
                "count": 4661640,
                "maximum": 2022089.331,
                "minimum": 2021608.511,
                "name": "Y",
                "position": 1,
                "stddev": 132.2337966,
                "variance": 17485.77698
              },
              {
                "average": 712.5675765,
                "count": 4661640,
                "maximum": 736.9274233,
                "minimum": 690.7874233,
                "name": "Z",
                "position": 2,
                "stddev": 11.62297187,
                "variance": 135.0934751
              },
              {
                "average": 49266.77496,
                "count": 4661640,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9263.431351,
                "variance": 85811160.4
              },
              {
                "average": 1.000137934,
                "count": 4661640,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01178021053,
                "variance": 0.0001387733602
              },
              {
                "average": 1.000275869,
                "count": 4661640,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01668432606,
                "variance": 0.000278366736
              },
              {
                "average": 0.5040676672,
                "count": 4661640,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999835074,
                "variance": 0.2499835077
              },
              {
                "average": 0.0003932092568,
                "count": 4661640,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01982560788,
                "variance": 0.0003930547276
              },
              {
                "average": 1.285161231,
                "count": 4661640,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5069646933,
                "variance": 0.2570132003
              },
              {
                "average": -3.629783661,
                "count": 4661640,
                "maximum": 21.39599991,
                "minimum": -21.38400078,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41990434,
                "variance": 108.5744065
              },
              {
                "average": 0.4822575317,
                "count": 4661640,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996851593,
                "variance": 0.2496852584
              },
              {
                "average": 416.5778696,
                "count": 4661640,
                "maximum": 630,
                "minimum": 350,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 117.7528246,
                "variance": 13865.72769
              },
              {
                "average": 249235206.9,
                "count": 4661640,
                "maximum": 249242030.4,
                "minimum": 249232926.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3667.309895,
                "variance": 13449161.87
              },
              {
                "average": 0.4822575317,
                "count": 4661640,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996851593,
                "variance": 0.2496852584
              },
              {
                "average": 0,
                "count": 4661640,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4661640,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4661640,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.166293193,
                "count": 4661640,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.372343654,
                "variance": 0.1386397967
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              96336.10407,
              2021608.511,
              690.7874233,
              96824.52407,
              2022089.331,
              736.9274233
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    96336.1040699781,
                    2021608.5111311222,
                    690.7874233499109
                  ],
                  [
                    96336.1040699781,
                    2022089.331131122,
                    690.7874233499109
                  ],
                  [
                    96824.52406997811,
                    2022089.331131122,
                    736.927423349911
                  ],
                  [
                    96824.52406997811,
                    2021608.5111311222,
                    736.927423349911
                  ],
                  [
                    96336.1040699781,
                    2021608.5111311222,
                    690.7874233499109
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T19:40:30+00:00",
            "end_time": "2019-08-07T17:08:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190807_B18_NSB4_000429.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -151.73578709073485,
              68.15633258900988,
              666.8847883239853
            ],
            [
              -151.73539584628534,
              68.1606775197594,
              666.8847883239853
            ],
            [
              -151.72373781711337,
              68.16052649530978,
              697.8847883239853
            ],
            [
              -151.7241310725159,
              68.1561815930246,
              697.8847883239853
            ],
            [
              -151.73578709073485,
              68.15633258900988,
              666.8847883239853
            ]
          ]
        ]
      },
      "bbox": [
        -151.7357871,
        68.15618159,
        666.8847883,
        -151.7237378,
        68.16067752,
        697.8847883
      ],
      "properties": {
        "datetime": "2019-08-07T20:02:51Z",
        "pc:count": 4420549,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 95086.97865,
            "count": 4420549,
            "maximum": 95330.26535,
            "minimum": 94841.64535,
            "name": "X",
            "position": 0,
            "stddev": 135.544071,
            "variance": 18372.19518
          },
          {
            "average": 2023573.673,
            "count": 4420549,
            "maximum": 2023813.805,
            "minimum": 2023333.025,
            "name": "Y",
            "position": 1,
            "stddev": 127.4334818,
            "variance": 16239.29229
          },
          {
            "average": 678.7616728,
            "count": 4420549,
            "maximum": 697.8847883,
            "minimum": 666.8847883,
            "name": "Z",
            "position": 2,
            "stddev": 5.739238957,
            "variance": 32.9388638
          },
          {
            "average": 50955.01986,
            "count": 4420549,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 6784.809462,
            "variance": 46033639.44
          },
          {
            "average": 1.00015903,
            "count": 4420549,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01260970921,
            "variance": 0.0001590047664
          },
          {
            "average": 1.000318739,
            "count": 4420549,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01785041087,
            "variance": 0.0003186371683
          },
          {
            "average": 0.4947371921,
            "count": 4420549,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999723586,
            "variance": 0.2499723594
          },
          {
            "average": 0.0004442887071,
            "count": 4420549,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02107347658,
            "variance": 0.0004440914151
          },
          {
            "average": 1.270829031,
            "count": 4420549,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4743644598,
            "variance": 0.2250216407
          },
          {
            "average": -0.7504571964,
            "count": 4420549,
            "maximum": 21.51600075,
            "minimum": -20.96999931,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.89475499,
            "variance": 118.6956864
          },
          {
            "average": 0.4755719256,
            "count": 4420549,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994029692,
            "variance": 0.2494033256
          },
          {
            "average": 413.6934157,
            "count": 4420549,
            "maximum": 634,
            "minimum": 354,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 113.0116565,
            "variance": 12771.6345
          },
          {
            "average": 249235779.3,
            "count": 4420549,
            "maximum": 249243371.5,
            "minimum": 249233570,
            "name": "GpsTime",
            "position": 12,
            "stddev": 3757.913529,
            "variance": 14121914.09
          },
          {
            "average": 0.4755719256,
            "count": 4420549,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994029692,
            "variance": 0.2494033256
          },
          {
            "average": 0,
            "count": 4420549,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4420549,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4420549,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1991397449,
            "count": 4420549,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3993534061,
            "variance": 0.159483143
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          94841.64535,
          2023333.025,
          666.8847883,
          95330.26535,
          2023813.805,
          697.8847883
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                94841.64534513006,
                2023333.0253779467,
                666.8847883239853
              ],
              [
                94841.64534513006,
                2023813.8053779465,
                666.8847883239853
              ],
              [
                95330.26534513006,
                2023813.8053779465,
                697.8847883239853
              ],
              [
                95330.26534513006,
                2023333.0253779467,
                697.8847883239853
              ],
              [
                94841.64534513006,
                2023333.0253779467,
                666.8847883239853
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-07T20:02:51+00:00",
        "end_time": "2019-08-07T17:19:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_9/20190807_B18_NSB4_000429.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190807_B18_NSB4_000429.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_9/20190807_B18_NSB4_000429.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000429.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -151.7357871,
            68.15618159,
            666.8847883,
            -151.7237378,
            68.16067752,
            697.8847883
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -151.73578709073485,
                  68.15633258900988,
                  666.8847883239853
                ],
                [
                  -151.73539584628534,
                  68.1606775197594,
                  666.8847883239853
                ],
                [
                  -151.72373781711337,
                  68.16052649530978,
                  697.8847883239853
                ],
                [
                  -151.7241310725159,
                  68.1561815930246,
                  697.8847883239853
                ],
                [
                  -151.73578709073485,
                  68.15633258900988,
                  666.8847883239853
                ]
              ]
            ]
          },
          "id": "20190807_B18_NSB4_000429.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_9/20190807_B18_NSB4_000429.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-07T20:02:51Z",
            "pc:count": 4420549,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 95086.97865,
                "count": 4420549,
                "maximum": 95330.26535,
                "minimum": 94841.64535,
                "name": "X",
                "position": 0,
                "stddev": 135.544071,
                "variance": 18372.19518
              },
              {
                "average": 2023573.673,
                "count": 4420549,
                "maximum": 2023813.805,
                "minimum": 2023333.025,
                "name": "Y",
                "position": 1,
                "stddev": 127.4334818,
                "variance": 16239.29229
              },
              {
                "average": 678.7616728,
                "count": 4420549,
                "maximum": 697.8847883,
                "minimum": 666.8847883,
                "name": "Z",
                "position": 2,
                "stddev": 5.739238957,
                "variance": 32.9388638
              },
              {
                "average": 50955.01986,
                "count": 4420549,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 6784.809462,
                "variance": 46033639.44
              },
              {
                "average": 1.00015903,
                "count": 4420549,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01260970921,
                "variance": 0.0001590047664
              },
              {
                "average": 1.000318739,
                "count": 4420549,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01785041087,
                "variance": 0.0003186371683
              },
              {
                "average": 0.4947371921,
                "count": 4420549,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999723586,
                "variance": 0.2499723594
              },
              {
                "average": 0.0004442887071,
                "count": 4420549,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02107347658,
                "variance": 0.0004440914151
              },
              {
                "average": 1.270829031,
                "count": 4420549,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4743644598,
                "variance": 0.2250216407
              },
              {
                "average": -0.7504571964,
                "count": 4420549,
                "maximum": 21.51600075,
                "minimum": -20.96999931,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.89475499,
                "variance": 118.6956864
              },
              {
                "average": 0.4755719256,
                "count": 4420549,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994029692,
                "variance": 0.2494033256
              },
              {
                "average": 413.6934157,
                "count": 4420549,
                "maximum": 634,
                "minimum": 354,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 113.0116565,
                "variance": 12771.6345
              },
              {
                "average": 249235779.3,
                "count": 4420549,
                "maximum": 249243371.5,
                "minimum": 249233570,
                "name": "GpsTime",
                "position": 12,
                "stddev": 3757.913529,
                "variance": 14121914.09
              },
              {
                "average": 0.4755719256,
                "count": 4420549,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994029692,
                "variance": 0.2494033256
              },
              {
                "average": 0,
                "count": 4420549,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4420549,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4420549,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1991397449,
                "count": 4420549,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3993534061,
                "variance": 0.159483143
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              94841.64535,
              2023333.025,
              666.8847883,
              95330.26535,
              2023813.805,
              697.8847883
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    94841.64534513006,
                    2023333.0253779467,
                    666.8847883239853
                  ],
                  [
                    94841.64534513006,
                    2023813.8053779465,
                    666.8847883239853
                  ],
                  [
                    95330.26534513006,
                    2023813.8053779465,
                    697.8847883239853
                  ],
                  [
                    95330.26534513006,
                    2023333.0253779467,
                    697.8847883239853
                  ],
                  [
                    94841.64534513006,
                    2023333.0253779467,
                    666.8847883239853
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-07T20:02:51+00:00",
            "end_time": "2019-08-07T17:19:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_112.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.6226733836491,
              70.1337875566248,
              2.303486918319607
            ],
            [
              -143.62242198398556,
              70.13434970433487,
              2.303486918319607
            ],
            [
              -143.6159991829162,
              70.1339931207281,
              3.243486918319607
            ],
            [
              -143.61625073307027,
              70.13343098267028,
              3.243486918319607
            ],
            [
              -143.6226733836491,
              70.1337875566248,
              2.303486918319607
            ]
          ]
        ]
      },
      "bbox": [
        -143.6226734,
        70.13343098,
        2.303486918,
        -143.6159992,
        70.1343497,
        3.243486918
      ],
      "properties": {
        "datetime": "2018-07-20T22:41:24Z",
        "pc:count": 145557,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399191.6148,
            "count": 145557,
            "maximum": 399353.2802,
            "minimum": 399102.2002,
            "name": "X",
            "position": 0,
            "stddev": 61.51067128,
            "variance": 3783.562682
          },
          {
            "average": 2270782.552,
            "count": 145557,
            "maximum": 2270808.855,
            "minimum": 2270746.475,
            "name": "Y",
            "position": 1,
            "stddev": 13.46017869,
            "variance": 181.1764103
          },
          {
            "average": 2.745799483,
            "count": 145557,
            "maximum": 3.243486918,
            "minimum": 2.303486918,
            "name": "Z",
            "position": 2,
            "stddev": 0.1659186163,
            "variance": 0.02752898725
          },
          {
            "average": 18462.09749,
            "count": 145557,
            "maximum": 46081,
            "minimum": 13829,
            "name": "Intensity",
            "position": 3,
            "stddev": 1482.508155,
            "variance": 2197830.43
          },
          {
            "average": 1,
            "count": 145557,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 145557,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5090514369,
            "count": 145557,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499919782,
            "variance": 0.2499197885
          },
          {
            "average": 0.0003297677199,
            "count": 145557,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01815657561,
            "variance": 0.0003296612379
          },
          {
            "average": 1.294551275,
            "count": 145557,
            "maximum": 2,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4558423512,
            "variance": 0.2077922491
          },
          {
            "average": -1.479499864,
            "count": 145557,
            "maximum": 16.40999985,
            "minimum": -15.53999996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.552479018,
            "variance": 91.24985539
          },
          {
            "average": 0.5279649897,
            "count": 145557,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992190617,
            "variance": 0.2492196715
          },
          {
            "average": 164.3803733,
            "count": 145557,
            "maximum": 200,
            "minimum": 153,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.755508,
            "variance": 351.7690803
          },
          {
            "average": 216160785.2,
            "count": 145557,
            "maximum": 216161684.1,
            "minimum": 216158301.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1311.286373,
            "variance": 1719471.952
          },
          {
            "average": 0.5279649897,
            "count": 145557,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992190617,
            "variance": 0.2492196715
          },
          {
            "average": 0,
            "count": 145557,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 145557,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 145557,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2064277225,
            "count": 145557,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4047424407,
            "variance": 0.1638164433
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399102.2002,
          2270746.475,
          2.303486918,
          399353.2802,
          2270808.855,
          3.243486918
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399102.2001953794,
                2270746.475214677,
                2.303486918319607
              ],
              [
                399102.2001953794,
                2270808.855214677,
                2.303486918319607
              ],
              [
                399353.28019537934,
                2270808.855214677,
                3.243486918319607
              ],
              [
                399353.28019537934,
                2270746.475214677,
                3.243486918319607
              ],
              [
                399102.2001953794,
                2270746.475214677,
                2.303486918319607
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:41:24+00:00",
        "end_time": "2018-07-20T21:45:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_112.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_112.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_112.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_112.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6226734,
            70.13343098,
            2.303486918,
            -143.6159992,
            70.1343497,
            3.243486918
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.6226733836491,
                  70.1337875566248,
                  2.303486918319607
                ],
                [
                  -143.62242198398556,
                  70.13434970433487,
                  2.303486918319607
                ],
                [
                  -143.6159991829162,
                  70.1339931207281,
                  3.243486918319607
                ],
                [
                  -143.61625073307027,
                  70.13343098267028,
                  3.243486918319607
                ],
                [
                  -143.6226733836491,
                  70.1337875566248,
                  2.303486918319607
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_112.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_112.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:41:24Z",
            "pc:count": 145557,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399191.6148,
                "count": 145557,
                "maximum": 399353.2802,
                "minimum": 399102.2002,
                "name": "X",
                "position": 0,
                "stddev": 61.51067128,
                "variance": 3783.562682
              },
              {
                "average": 2270782.552,
                "count": 145557,
                "maximum": 2270808.855,
                "minimum": 2270746.475,
                "name": "Y",
                "position": 1,
                "stddev": 13.46017869,
                "variance": 181.1764103
              },
              {
                "average": 2.745799483,
                "count": 145557,
                "maximum": 3.243486918,
                "minimum": 2.303486918,
                "name": "Z",
                "position": 2,
                "stddev": 0.1659186163,
                "variance": 0.02752898725
              },
              {
                "average": 18462.09749,
                "count": 145557,
                "maximum": 46081,
                "minimum": 13829,
                "name": "Intensity",
                "position": 3,
                "stddev": 1482.508155,
                "variance": 2197830.43
              },
              {
                "average": 1,
                "count": 145557,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 145557,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5090514369,
                "count": 145557,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499919782,
                "variance": 0.2499197885
              },
              {
                "average": 0.0003297677199,
                "count": 145557,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01815657561,
                "variance": 0.0003296612379
              },
              {
                "average": 1.294551275,
                "count": 145557,
                "maximum": 2,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4558423512,
                "variance": 0.2077922491
              },
              {
                "average": -1.479499864,
                "count": 145557,
                "maximum": 16.40999985,
                "minimum": -15.53999996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.552479018,
                "variance": 91.24985539
              },
              {
                "average": 0.5279649897,
                "count": 145557,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992190617,
                "variance": 0.2492196715
              },
              {
                "average": 164.3803733,
                "count": 145557,
                "maximum": 200,
                "minimum": 153,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.755508,
                "variance": 351.7690803
              },
              {
                "average": 216160785.2,
                "count": 145557,
                "maximum": 216161684.1,
                "minimum": 216158301.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1311.286373,
                "variance": 1719471.952
              },
              {
                "average": 0.5279649897,
                "count": 145557,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992190617,
                "variance": 0.2492196715
              },
              {
                "average": 0,
                "count": 145557,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 145557,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 145557,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2064277225,
                "count": 145557,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4047424407,
                "variance": 0.1638164433
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399102.2002,
              2270746.475,
              2.303486918,
              399353.2802,
              2270808.855,
              3.243486918
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399102.2001953794,
                    2270746.475214677,
                    2.303486918319607
                  ],
                  [
                    399102.2001953794,
                    2270808.855214677,
                    2.303486918319607
                  ],
                  [
                    399353.28019537934,
                    2270808.855214677,
                    3.243486918319607
                  ],
                  [
                    399353.28019537934,
                    2270746.475214677,
                    3.243486918319607
                  ],
                  [
                    399102.2001953794,
                    2270746.475214677,
                    2.303486918319607
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:41:24+00:00",
            "end_time": "2018-07-20T21:45:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_101.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.62418529493468,
              70.12979158811078,
              -1.74496981485134
            ],
            [
              -143.62222735155808,
              70.13417031390074,
              -1.74496981485134
            ],
            [
              -143.6084289664796,
              70.1334039474789,
              24.87503018514866
            ],
            [
              -143.6103894276942,
              70.12902538323665,
              24.87503018514866
            ],
            [
              -143.62418529493468,
              70.12979158811078,
              -1.74496981485134
            ]
          ]
        ]
      },
      "bbox": [
        -143.6241853,
        70.12902538,
        -1.744969815,
        -143.608429,
        70.13417031,
        24.87503019
      ],
      "properties": {
        "datetime": "2018-07-20T22:41:31Z",
        "pc:count": 2832481,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399327.3185,
            "count": 2832481,
            "maximum": 399652.1047,
            "minimum": 399112.6847,
            "name": "X",
            "position": 0,
            "stddev": 109.9201896,
            "variance": 12082.44809
          },
          {
            "average": 2270557.058,
            "count": 2832481,
            "maximum": 2270790.601,
            "minimum": 2270304.701,
            "name": "Y",
            "position": 1,
            "stddev": 130.0257756,
            "variance": 16906.70231
          },
          {
            "average": 4.972826735,
            "count": 2832481,
            "maximum": 24.87503019,
            "minimum": -1.744969815,
            "name": "Z",
            "position": 2,
            "stddev": 3.264822215,
            "variance": 10.6590641
          },
          {
            "average": 19377.30418,
            "count": 2832481,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8762.00957,
            "variance": 76772811.7
          },
          {
            "average": 1.006698368,
            "count": 2832481,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08314652818,
            "variance": 0.006913345148
          },
          {
            "average": 1.013385085,
            "count": 2832481,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1182631156,
            "variance": 0.01398616451
          },
          {
            "average": 0.5014226044,
            "count": 2832481,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999980645,
            "variance": 0.2499980645
          },
          {
            "average": 0.0005436929674,
            "count": 2832481,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02331088924,
            "variance": 0.0005433975572
          },
          {
            "average": 2.449353411,
            "count": 2832481,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.690584118,
            "variance": 7.239242896
          },
          {
            "average": 0.5701240474,
            "count": 2832481,
            "maximum": 16.31999969,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.583824741,
            "variance": 91.84969667
          },
          {
            "average": 0.5245525036,
            "count": 2832481,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993968989,
            "variance": 0.2493972626
          },
          {
            "average": 162.1569797,
            "count": 2832481,
            "maximum": 201,
            "minimum": 152,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.48416075,
            "variance": 305.6958772
          },
          {
            "average": 216160863.8,
            "count": 2832481,
            "maximum": 216161691.7,
            "minimum": 216158294.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1189.400031,
            "variance": 1414672.434
          },
          {
            "average": 0.5245525036,
            "count": 2832481,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993968989,
            "variance": 0.2493972626
          },
          {
            "average": 0,
            "count": 2832481,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2832481,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2832481,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1959218791,
            "count": 2832481,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3969087452,
            "variance": 0.157536552
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399112.6847,
          2270304.701,
          -1.744969815,
          399652.1047,
          2270790.601,
          24.87503019
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399112.68467270845,
                2270304.700573134,
                -1.74496981485134
              ],
              [
                399112.68467270845,
                2270790.600573134,
                -1.74496981485134
              ],
              [
                399652.1046727085,
                2270790.600573134,
                24.87503018514866
              ],
              [
                399652.1046727085,
                2270304.700573134,
                24.87503018514866
              ],
              [
                399112.68467270845,
                2270304.700573134,
                -1.74496981485134
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:41:31+00:00",
        "end_time": "2018-07-20T21:44:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_101.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_101.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_101.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_101.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6241853,
            70.12902538,
            -1.744969815,
            -143.608429,
            70.13417031,
            24.87503019
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.62418529493468,
                  70.12979158811078,
                  -1.74496981485134
                ],
                [
                  -143.62222735155808,
                  70.13417031390074,
                  -1.74496981485134
                ],
                [
                  -143.6084289664796,
                  70.1334039474789,
                  24.87503018514866
                ],
                [
                  -143.6103894276942,
                  70.12902538323665,
                  24.87503018514866
                ],
                [
                  -143.62418529493468,
                  70.12979158811078,
                  -1.74496981485134
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_101.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_101.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:41:31Z",
            "pc:count": 2832481,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399327.3185,
                "count": 2832481,
                "maximum": 399652.1047,
                "minimum": 399112.6847,
                "name": "X",
                "position": 0,
                "stddev": 109.9201896,
                "variance": 12082.44809
              },
              {
                "average": 2270557.058,
                "count": 2832481,
                "maximum": 2270790.601,
                "minimum": 2270304.701,
                "name": "Y",
                "position": 1,
                "stddev": 130.0257756,
                "variance": 16906.70231
              },
              {
                "average": 4.972826735,
                "count": 2832481,
                "maximum": 24.87503019,
                "minimum": -1.744969815,
                "name": "Z",
                "position": 2,
                "stddev": 3.264822215,
                "variance": 10.6590641
              },
              {
                "average": 19377.30418,
                "count": 2832481,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8762.00957,
                "variance": 76772811.7
              },
              {
                "average": 1.006698368,
                "count": 2832481,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08314652818,
                "variance": 0.006913345148
              },
              {
                "average": 1.013385085,
                "count": 2832481,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1182631156,
                "variance": 0.01398616451
              },
              {
                "average": 0.5014226044,
                "count": 2832481,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999980645,
                "variance": 0.2499980645
              },
              {
                "average": 0.0005436929674,
                "count": 2832481,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02331088924,
                "variance": 0.0005433975572
              },
              {
                "average": 2.449353411,
                "count": 2832481,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.690584118,
                "variance": 7.239242896
              },
              {
                "average": 0.5701240474,
                "count": 2832481,
                "maximum": 16.31999969,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.583824741,
                "variance": 91.84969667
              },
              {
                "average": 0.5245525036,
                "count": 2832481,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993968989,
                "variance": 0.2493972626
              },
              {
                "average": 162.1569797,
                "count": 2832481,
                "maximum": 201,
                "minimum": 152,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.48416075,
                "variance": 305.6958772
              },
              {
                "average": 216160863.8,
                "count": 2832481,
                "maximum": 216161691.7,
                "minimum": 216158294.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1189.400031,
                "variance": 1414672.434
              },
              {
                "average": 0.5245525036,
                "count": 2832481,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993968989,
                "variance": 0.2493972626
              },
              {
                "average": 0,
                "count": 2832481,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2832481,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2832481,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1959218791,
                "count": 2832481,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3969087452,
                "variance": 0.157536552
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399112.6847,
              2270304.701,
              -1.744969815,
              399652.1047,
              2270790.601,
              24.87503019
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399112.68467270845,
                    2270304.700573134,
                    -1.74496981485134
                  ],
                  [
                    399112.68467270845,
                    2270790.600573134,
                    -1.74496981485134
                  ],
                  [
                    399652.1046727085,
                    2270790.600573134,
                    24.87503018514866
                  ],
                  [
                    399652.1046727085,
                    2270304.700573134,
                    24.87503018514866
                  ],
                  [
                    399112.68467270845,
                    2270304.700573134,
                    -1.74496981485134
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:41:31+00:00",
            "end_time": "2018-07-20T21:44:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_102.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.61008866858398,
              70.12978677254671,
              1.450801973861784
            ],
            [
              -143.60942459830176,
              70.1312700192933,
              1.450801973861784
            ],
            [
              -143.5976764195394,
              70.13061670034189,
              1.750801973861784
            ],
            [
              -143.5983412159502,
              70.12913350024547,
              1.750801973861784
            ],
            [
              -143.61008866858398,
              70.12978677254671,
              1.450801973861784
            ]
          ]
        ]
      },
      "bbox": [
        -143.6100887,
        70.1291335,
        1.450801974,
        -143.5976764,
        70.13127002,
        1.750801974
      ],
      "properties": {
        "datetime": "2018-07-20T22:36:21Z",
        "pc:count": 47575,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400048.0697,
            "count": 47575,
            "maximum": 400109.915,
            "minimum": 399650.575,
            "name": "X",
            "position": 0,
            "stddev": 64.22003502,
            "variance": 4124.212898
          },
          {
            "average": 2270488.696,
            "count": 47575,
            "maximum": 2270553.553,
            "minimum": 2270388.953,
            "name": "Y",
            "position": 1,
            "stddev": 26.24761169,
            "variance": 688.9371197
          },
          {
            "average": 1.577725148,
            "count": 47575,
            "maximum": 1.750801974,
            "minimum": 1.450801974,
            "name": "Z",
            "position": 2,
            "stddev": 0.03036195591,
            "variance": 0.0009218483668
          },
          {
            "average": 12929.47302,
            "count": 47575,
            "maximum": 65535,
            "minimum": 869,
            "name": "Intensity",
            "position": 3,
            "stddev": 11008.49264,
            "variance": 121186910.2
          },
          {
            "average": 1,
            "count": 47575,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 47575,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4928008408,
            "count": 47575,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999534238,
            "variance": 0.249953426
          },
          {
            "average": 0.0009668943773,
            "count": 47575,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03108021552,
            "variance": 0.0009659797969
          },
          {
            "average": 8.463667893,
            "count": 47575,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.391852935,
            "variance": 1.937254592
          },
          {
            "average": 4.233747052,
            "count": 47575,
            "maximum": 15.00599957,
            "minimum": -15.68999958,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.708482891,
            "variance": 32.58677692
          },
          {
            "average": 0.4812611666,
            "count": 47575,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499653984,
            "variance": 0.2496541037
          },
          {
            "average": 151.3679874,
            "count": 47575,
            "maximum": 200,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6587473381,
            "variance": 0.4339480555
          },
          {
            "average": 216160988.6,
            "count": 47575,
            "maximum": 216161381.1,
            "minimum": 216158294.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 94.62125322,
            "variance": 8953.181561
          },
          {
            "average": 0.4812611666,
            "count": 47575,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499653984,
            "variance": 0.2496541037
          },
          {
            "average": 0,
            "count": 47575,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 47575,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 47575,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02335260116,
            "count": 47575,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1510223049,
            "variance": 0.02280773658
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399650.575,
          2270388.953,
          1.450801974,
          400109.915,
          2270553.553,
          1.750801974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399650.57498077856,
                2270388.953183397,
                1.450801973861784
              ],
              [
                399650.57498077856,
                2270553.553183397,
                1.450801973861784
              ],
              [
                400109.9149807785,
                2270553.553183397,
                1.750801973861784
              ],
              [
                400109.9149807785,
                2270388.953183397,
                1.750801973861784
              ],
              [
                399650.57498077856,
                2270388.953183397,
                1.450801973861784
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:36:21+00:00",
        "end_time": "2018-07-20T21:44:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_102.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_102.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_102.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_102.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6100887,
            70.1291335,
            1.450801974,
            -143.5976764,
            70.13127002,
            1.750801974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.61008866858398,
                  70.12978677254671,
                  1.450801973861784
                ],
                [
                  -143.60942459830176,
                  70.1312700192933,
                  1.450801973861784
                ],
                [
                  -143.5976764195394,
                  70.13061670034189,
                  1.750801973861784
                ],
                [
                  -143.5983412159502,
                  70.12913350024547,
                  1.750801973861784
                ],
                [
                  -143.61008866858398,
                  70.12978677254671,
                  1.450801973861784
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_102.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_102.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:36:21Z",
            "pc:count": 47575,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400048.0697,
                "count": 47575,
                "maximum": 400109.915,
                "minimum": 399650.575,
                "name": "X",
                "position": 0,
                "stddev": 64.22003502,
                "variance": 4124.212898
              },
              {
                "average": 2270488.696,
                "count": 47575,
                "maximum": 2270553.553,
                "minimum": 2270388.953,
                "name": "Y",
                "position": 1,
                "stddev": 26.24761169,
                "variance": 688.9371197
              },
              {
                "average": 1.577725148,
                "count": 47575,
                "maximum": 1.750801974,
                "minimum": 1.450801974,
                "name": "Z",
                "position": 2,
                "stddev": 0.03036195591,
                "variance": 0.0009218483668
              },
              {
                "average": 12929.47302,
                "count": 47575,
                "maximum": 65535,
                "minimum": 869,
                "name": "Intensity",
                "position": 3,
                "stddev": 11008.49264,
                "variance": 121186910.2
              },
              {
                "average": 1,
                "count": 47575,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 47575,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4928008408,
                "count": 47575,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999534238,
                "variance": 0.249953426
              },
              {
                "average": 0.0009668943773,
                "count": 47575,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03108021552,
                "variance": 0.0009659797969
              },
              {
                "average": 8.463667893,
                "count": 47575,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.391852935,
                "variance": 1.937254592
              },
              {
                "average": 4.233747052,
                "count": 47575,
                "maximum": 15.00599957,
                "minimum": -15.68999958,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.708482891,
                "variance": 32.58677692
              },
              {
                "average": 0.4812611666,
                "count": 47575,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499653984,
                "variance": 0.2496541037
              },
              {
                "average": 151.3679874,
                "count": 47575,
                "maximum": 200,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6587473381,
                "variance": 0.4339480555
              },
              {
                "average": 216160988.6,
                "count": 47575,
                "maximum": 216161381.1,
                "minimum": 216158294.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 94.62125322,
                "variance": 8953.181561
              },
              {
                "average": 0.4812611666,
                "count": 47575,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499653984,
                "variance": 0.2496541037
              },
              {
                "average": 0,
                "count": 47575,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 47575,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 47575,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02335260116,
                "count": 47575,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1510223049,
                "variance": 0.02280773658
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399650.575,
              2270388.953,
              1.450801974,
              400109.915,
              2270553.553,
              1.750801974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399650.57498077856,
                    2270388.953183397,
                    1.450801973861784
                  ],
                  [
                    399650.57498077856,
                    2270553.553183397,
                    1.450801973861784
                  ],
                  [
                    400109.9149807785,
                    2270553.553183397,
                    1.750801973861784
                  ],
                  [
                    400109.9149807785,
                    2270388.953183397,
                    1.750801973861784
                  ],
                  [
                    399650.57498077856,
                    2270388.953183397,
                    1.450801973861784
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:36:21+00:00",
            "end_time": "2018-07-20T21:44:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_103.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.59838054303322,
              70.1299140862335,
              1.384626546569356
            ],
            [
              -143.59788407958925,
              70.13102171438459,
              1.384626546569356
            ],
            [
              -143.59311114878122,
              70.1307560810595,
              5.884626546569356
            ],
            [
              -143.59360783251813,
              70.12964846707295,
              5.884626546569356
            ],
            [
              -143.59838054303322,
              70.1299140862335,
              1.384626546569356
            ]
          ]
        ]
      },
      "bbox": [
        -143.5983805,
        70.12964847,
        1.384626547,
        -143.5931111,
        70.13102171,
        5.884626547
      ],
      "properties": {
        "datetime": "2018-07-20T22:31:20Z",
        "pc:count": 142886,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400174.4085,
            "count": 142886,
            "maximum": 400281.6875,
            "minimum": 400095.0675,
            "name": "X",
            "position": 0,
            "stddev": 43.16075557,
            "variance": 1862.850822
          },
          {
            "average": 2270528.467,
            "count": 142886,
            "maximum": 2270596.155,
            "minimum": 2270473.235,
            "name": "Y",
            "position": 1,
            "stddev": 29.81287335,
            "variance": 888.8074175
          },
          {
            "average": 2.118127799,
            "count": 142886,
            "maximum": 5.884626547,
            "minimum": 1.384626547,
            "name": "Z",
            "position": 2,
            "stddev": 0.7626487639,
            "variance": 0.5816331371
          },
          {
            "average": 17407.98266,
            "count": 142886,
            "maximum": 65535,
            "minimum": 869,
            "name": "Intensity",
            "position": 3,
            "stddev": 13157.91492,
            "variance": 173130725
          },
          {
            "average": 1.000006999,
            "count": 142886,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002645484131,
            "variance": 6.998586286e-06
          },
          {
            "average": 1.000013997,
            "count": 142886,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003741266445,
            "variance": 1.399707461e-05
          },
          {
            "average": 0.5068096245,
            "count": 142886,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999553764,
            "variance": 0.2499553783
          },
          {
            "average": 0.000538891144,
            "count": 142886,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02320785448,
            "variance": 0.0005386045098
          },
          {
            "average": 5.694056801,
            "count": 142886,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.871318427,
            "variance": 14.98710637
          },
          {
            "average": -1.015231318,
            "count": 142886,
            "maximum": 16.26600075,
            "minimum": -13.66800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.683587483,
            "variance": 75.40469158
          },
          {
            "average": 0.4759668547,
            "count": 142886,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994238216,
            "variance": 0.2494241535
          },
          {
            "average": 150.910936,
            "count": 142886,
            "maximum": 152,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7242497602,
            "variance": 0.5245377151
          },
          {
            "average": 216160913.2,
            "count": 142886,
            "maximum": 216161080.2,
            "minimum": 216160756.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 118.2513531,
            "variance": 13983.3825
          },
          {
            "average": 0.4759668547,
            "count": 142886,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994238216,
            "variance": 0.2494241535
          },
          {
            "average": 0,
            "count": 142886,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 142886,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 142886,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1122433268,
            "count": 142886,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.315666691,
            "variance": 0.0996454598
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          400095.0675,
          2270473.235,
          1.384626547,
          400281.6875,
          2270596.155,
          5.884626547
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                400095.0675466108,
                2270473.2351038433,
                1.384626546569356
              ],
              [
                400095.0675466108,
                2270596.155103843,
                1.384626546569356
              ],
              [
                400281.6875466108,
                2270596.155103843,
                5.884626546569356
              ],
              [
                400281.6875466108,
                2270473.2351038433,
                5.884626546569356
              ],
              [
                400095.0675466108,
                2270473.2351038433,
                1.384626546569356
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:31:20+00:00",
        "end_time": "2018-07-20T22:25:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_103.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_103.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_103.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_103.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.5983805,
            70.12964847,
            1.384626547,
            -143.5931111,
            70.13102171,
            5.884626547
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.59838054303322,
                  70.1299140862335,
                  1.384626546569356
                ],
                [
                  -143.59788407958925,
                  70.13102171438459,
                  1.384626546569356
                ],
                [
                  -143.59311114878122,
                  70.1307560810595,
                  5.884626546569356
                ],
                [
                  -143.59360783251813,
                  70.12964846707295,
                  5.884626546569356
                ],
                [
                  -143.59838054303322,
                  70.1299140862335,
                  1.384626546569356
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_103.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_103.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:31:20Z",
            "pc:count": 142886,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400174.4085,
                "count": 142886,
                "maximum": 400281.6875,
                "minimum": 400095.0675,
                "name": "X",
                "position": 0,
                "stddev": 43.16075557,
                "variance": 1862.850822
              },
              {
                "average": 2270528.467,
                "count": 142886,
                "maximum": 2270596.155,
                "minimum": 2270473.235,
                "name": "Y",
                "position": 1,
                "stddev": 29.81287335,
                "variance": 888.8074175
              },
              {
                "average": 2.118127799,
                "count": 142886,
                "maximum": 5.884626547,
                "minimum": 1.384626547,
                "name": "Z",
                "position": 2,
                "stddev": 0.7626487639,
                "variance": 0.5816331371
              },
              {
                "average": 17407.98266,
                "count": 142886,
                "maximum": 65535,
                "minimum": 869,
                "name": "Intensity",
                "position": 3,
                "stddev": 13157.91492,
                "variance": 173130725
              },
              {
                "average": 1.000006999,
                "count": 142886,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002645484131,
                "variance": 6.998586286e-06
              },
              {
                "average": 1.000013997,
                "count": 142886,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003741266445,
                "variance": 1.399707461e-05
              },
              {
                "average": 0.5068096245,
                "count": 142886,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999553764,
                "variance": 0.2499553783
              },
              {
                "average": 0.000538891144,
                "count": 142886,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02320785448,
                "variance": 0.0005386045098
              },
              {
                "average": 5.694056801,
                "count": 142886,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.871318427,
                "variance": 14.98710637
              },
              {
                "average": -1.015231318,
                "count": 142886,
                "maximum": 16.26600075,
                "minimum": -13.66800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.683587483,
                "variance": 75.40469158
              },
              {
                "average": 0.4759668547,
                "count": 142886,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994238216,
                "variance": 0.2494241535
              },
              {
                "average": 150.910936,
                "count": 142886,
                "maximum": 152,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7242497602,
                "variance": 0.5245377151
              },
              {
                "average": 216160913.2,
                "count": 142886,
                "maximum": 216161080.2,
                "minimum": 216160756.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 118.2513531,
                "variance": 13983.3825
              },
              {
                "average": 0.4759668547,
                "count": 142886,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994238216,
                "variance": 0.2494241535
              },
              {
                "average": 0,
                "count": 142886,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 142886,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 142886,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1122433268,
                "count": 142886,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.315666691,
                "variance": 0.0996454598
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              400095.0675,
              2270473.235,
              1.384626547,
              400281.6875,
              2270596.155,
              5.884626547
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    400095.0675466108,
                    2270473.2351038433,
                    1.384626546569356
                  ],
                  [
                    400095.0675466108,
                    2270596.155103843,
                    1.384626546569356
                  ],
                  [
                    400281.6875466108,
                    2270596.155103843,
                    5.884626546569356
                  ],
                  [
                    400281.6875466108,
                    2270473.2351038433,
                    5.884626546569356
                  ],
                  [
                    400095.0675466108,
                    2270473.2351038433,
                    1.384626546569356
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:31:20+00:00",
            "end_time": "2018-07-20T22:25:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_088.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.62385800816807,
              70.12569470052149,
              0.486819177527433
            ],
            [
              -143.6217404456762,
              70.13043090083421,
              0.486819177527433
            ],
            [
              -143.60794223561928,
              70.1296644006178,
              61.04681917752744
            ],
            [
              -143.61006252104414,
              70.12492837503277,
              61.04681917752744
            ],
            [
              -143.62385800816807,
              70.12569470052149,
              0.486819177527433
            ]
          ]
        ]
      },
      "bbox": [
        -143.623858,
        70.12492838,
        0.4868191775,
        -143.6079422,
        70.1304309,
        61.04681918
      ],
      "properties": {
        "datetime": "2018-07-20T22:41:39Z",
        "pc:count": 4051298,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399452.711,
            "count": 4051298,
            "maximum": 399734.5537,
            "minimum": 399195.0537,
            "name": "X",
            "position": 0,
            "stddev": 134.9532835,
            "variance": 18212.38874
          },
          {
            "average": 2270113.426,
            "count": 4051298,
            "maximum": 2270388.621,
            "minimum": 2269863.041,
            "name": "Y",
            "position": 1,
            "stddev": 127.8602788,
            "variance": 16348.2509
          },
          {
            "average": 12.82277386,
            "count": 4051298,
            "maximum": 61.04681918,
            "minimum": 0.4868191775,
            "name": "Z",
            "position": 2,
            "stddev": 4.550707062,
            "variance": 20.70893477
          },
          {
            "average": 24075.36414,
            "count": 4051298,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10695.93821,
            "variance": 114403094.3
          },
          {
            "average": 1.01940736,
            "count": 4051298,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1412005292,
            "variance": 0.01993758944
          },
          {
            "average": 1.03883817,
            "count": 4051298,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2001296252,
            "variance": 0.04005186689
          },
          {
            "average": 0.4987408974,
            "count": 4051298,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999984764,
            "variance": 0.2499984764
          },
          {
            "average": 0.0006262190537,
            "count": 4051298,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02501653569,
            "variance": 0.0006258270579
          },
          {
            "average": 1.868206437,
            "count": 4051298,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.703575882,
            "variance": 2.902170787
          },
          {
            "average": 1.443132965,
            "count": 4051298,
            "maximum": 16.40399933,
            "minimum": -15.70199966,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.01463028,
            "variance": 100.2928197
          },
          {
            "average": 0.5088221108,
            "count": 4051298,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499922226,
            "variance": 0.249922232
          },
          {
            "average": 164.3391659,
            "count": 4051298,
            "maximum": 201,
            "minimum": 152,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.38117968,
            "variance": 375.6301256
          },
          {
            "average": 216160696.6,
            "count": 4051298,
            "maximum": 216161699.2,
            "minimum": 216158289.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1276.220917,
            "variance": 1628739.828
          },
          {
            "average": 0.5088221108,
            "count": 4051298,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499922226,
            "variance": 0.249922232
          },
          {
            "average": 0,
            "count": 4051298,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4051298,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4051298,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2294126475,
            "count": 4051298,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4204551442,
            "variance": 0.1767825283
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399195.0537,
          2269863.041,
          0.4868191775,
          399734.5537,
          2270388.621,
          61.04681918
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399195.0536511898,
                2269863.041130293,
                0.486819177527433
              ],
              [
                399195.0536511898,
                2270388.6211302932,
                0.486819177527433
              ],
              [
                399734.5536511898,
                2270388.6211302932,
                61.04681917752744
              ],
              [
                399734.5536511898,
                2269863.041130293,
                61.04681917752744
              ],
              [
                399195.0536511898,
                2269863.041130293,
                0.486819177527433
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:41:39+00:00",
        "end_time": "2018-07-20T21:44:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_088.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_088.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_088.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_088.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.623858,
            70.12492838,
            0.4868191775,
            -143.6079422,
            70.1304309,
            61.04681918
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.62385800816807,
                  70.12569470052149,
                  0.486819177527433
                ],
                [
                  -143.6217404456762,
                  70.13043090083421,
                  0.486819177527433
                ],
                [
                  -143.60794223561928,
                  70.1296644006178,
                  61.04681917752744
                ],
                [
                  -143.61006252104414,
                  70.12492837503277,
                  61.04681917752744
                ],
                [
                  -143.62385800816807,
                  70.12569470052149,
                  0.486819177527433
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_088.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_088.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:41:39Z",
            "pc:count": 4051298,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399452.711,
                "count": 4051298,
                "maximum": 399734.5537,
                "minimum": 399195.0537,
                "name": "X",
                "position": 0,
                "stddev": 134.9532835,
                "variance": 18212.38874
              },
              {
                "average": 2270113.426,
                "count": 4051298,
                "maximum": 2270388.621,
                "minimum": 2269863.041,
                "name": "Y",
                "position": 1,
                "stddev": 127.8602788,
                "variance": 16348.2509
              },
              {
                "average": 12.82277386,
                "count": 4051298,
                "maximum": 61.04681918,
                "minimum": 0.4868191775,
                "name": "Z",
                "position": 2,
                "stddev": 4.550707062,
                "variance": 20.70893477
              },
              {
                "average": 24075.36414,
                "count": 4051298,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10695.93821,
                "variance": 114403094.3
              },
              {
                "average": 1.01940736,
                "count": 4051298,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1412005292,
                "variance": 0.01993758944
              },
              {
                "average": 1.03883817,
                "count": 4051298,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2001296252,
                "variance": 0.04005186689
              },
              {
                "average": 0.4987408974,
                "count": 4051298,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999984764,
                "variance": 0.2499984764
              },
              {
                "average": 0.0006262190537,
                "count": 4051298,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02501653569,
                "variance": 0.0006258270579
              },
              {
                "average": 1.868206437,
                "count": 4051298,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.703575882,
                "variance": 2.902170787
              },
              {
                "average": 1.443132965,
                "count": 4051298,
                "maximum": 16.40399933,
                "minimum": -15.70199966,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.01463028,
                "variance": 100.2928197
              },
              {
                "average": 0.5088221108,
                "count": 4051298,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499922226,
                "variance": 0.249922232
              },
              {
                "average": 164.3391659,
                "count": 4051298,
                "maximum": 201,
                "minimum": 152,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.38117968,
                "variance": 375.6301256
              },
              {
                "average": 216160696.6,
                "count": 4051298,
                "maximum": 216161699.2,
                "minimum": 216158289.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1276.220917,
                "variance": 1628739.828
              },
              {
                "average": 0.5088221108,
                "count": 4051298,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499922226,
                "variance": 0.249922232
              },
              {
                "average": 0,
                "count": 4051298,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4051298,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4051298,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2294126475,
                "count": 4051298,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4204551442,
                "variance": 0.1767825283
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399195.0537,
              2269863.041,
              0.4868191775,
              399734.5537,
              2270388.621,
              61.04681918
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399195.0536511898,
                    2269863.041130293,
                    0.486819177527433
                  ],
                  [
                    399195.0536511898,
                    2270388.6211302932,
                    0.486819177527433
                  ],
                  [
                    399734.5536511898,
                    2270388.6211302932,
                    61.04681917752744
                  ],
                  [
                    399734.5536511898,
                    2269863.041130293,
                    61.04681917752744
                  ],
                  [
                    399195.0536511898,
                    2269863.041130293,
                    0.486819177527433
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:41:39+00:00",
            "end_time": "2018-07-20T21:44:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_111.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.63498914393926,
              70.13369274157279,
              1.392192188512953
            ],
            [
              -143.63441736253512,
              70.13497279729624,
              1.392192188512953
            ],
            [
              -143.6221770057753,
              70.13429384867207,
              5.372192188512953
            ],
            [
              -143.62274944026353,
              70.1330138347964,
              5.372192188512953
            ],
            [
              -143.63498914393926,
              70.13369274157279,
              1.392192188512953
            ]
          ]
        ]
      },
      "bbox": [
        -143.6349891,
        70.13301383,
        1.392192189,
        -143.622177,
        70.1349728,
        5.372192189
      ],
      "properties": {
        "datetime": "2018-07-20T22:45:02Z",
        "pc:count": 814655,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 398860.7733,
            "count": 814655,
            "maximum": 399112.4977,
            "minimum": 398634.0177,
            "name": "X",
            "position": 0,
            "stddev": 124.1839316,
            "variance": 15421.64887
          },
          {
            "average": 2270742.04,
            "count": 814655,
            "maximum": 2270804.279,
            "minimum": 2270662.239,
            "name": "Y",
            "position": 1,
            "stddev": 31.19810122,
            "variance": 973.32152
          },
          {
            "average": 2.560937031,
            "count": 814655,
            "maximum": 5.372192189,
            "minimum": 1.392192189,
            "name": "Z",
            "position": 2,
            "stddev": 0.4017554122,
            "variance": 0.1614074112
          },
          {
            "average": 17537.94545,
            "count": 814655,
            "maximum": 65535,
            "minimum": 869,
            "name": "Intensity",
            "position": 3,
            "stddev": 4988.514111,
            "variance": 24885273.04
          },
          {
            "average": 1.000096974,
            "count": 814655,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00984704426,
            "variance": 9.696428065e-05
          },
          {
            "average": 1.000193947,
            "count": 814655,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01392514824,
            "variance": 0.0001939097535
          },
          {
            "average": 0.4973725074,
            "count": 814655,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999934031,
            "variance": 0.2499934032
          },
          {
            "average": 0.0004885503679,
            "count": 814655,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02209778916,
            "variance": 0.0004883122859
          },
          {
            "average": 1.84349694,
            "count": 814655,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.131166325,
            "variance": 4.541869905
          },
          {
            "average": 1.935078221,
            "count": 814655,
            "maximum": 16.30200005,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.657213063,
            "variance": 93.26176414
          },
          {
            "average": 0.4791267469,
            "count": 814655,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995644239,
            "variance": 0.2495646136
          },
          {
            "average": 167.6430108,
            "count": 814655,
            "maximum": 201,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.7533643,
            "variance": 390.1954012
          },
          {
            "average": 216160787.5,
            "count": 814655,
            "maximum": 216161902.5,
            "minimum": 216158304.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1468.406512,
            "variance": 2156217.684
          },
          {
            "average": 0.4791267469,
            "count": 814655,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995644239,
            "variance": 0.2495646136
          },
          {
            "average": 0,
            "count": 814655,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 814655,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 814655,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1658874002,
            "count": 814655,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3719797582,
            "variance": 0.1383689405
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398634.0177,
          2270662.239,
          1.392192189,
          399112.4977,
          2270804.279,
          5.372192189
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398634.0176581815,
                2270662.239425038,
                1.392192188512953
              ],
              [
                398634.0176581815,
                2270804.279425038,
                1.392192188512953
              ],
              [
                399112.49765818147,
                2270804.279425038,
                5.372192188512953
              ],
              [
                399112.49765818147,
                2270662.239425038,
                5.372192188512953
              ],
              [
                398634.0176581815,
                2270662.239425038,
                1.392192188512953
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:45:02+00:00",
        "end_time": "2018-07-20T21:45:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_111.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_111.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_111.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_111.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6349891,
            70.13301383,
            1.392192189,
            -143.622177,
            70.1349728,
            5.372192189
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.63498914393926,
                  70.13369274157279,
                  1.392192188512953
                ],
                [
                  -143.63441736253512,
                  70.13497279729624,
                  1.392192188512953
                ],
                [
                  -143.6221770057753,
                  70.13429384867207,
                  5.372192188512953
                ],
                [
                  -143.62274944026353,
                  70.1330138347964,
                  5.372192188512953
                ],
                [
                  -143.63498914393926,
                  70.13369274157279,
                  1.392192188512953
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_111.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_111.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:45:02Z",
            "pc:count": 814655,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 398860.7733,
                "count": 814655,
                "maximum": 399112.4977,
                "minimum": 398634.0177,
                "name": "X",
                "position": 0,
                "stddev": 124.1839316,
                "variance": 15421.64887
              },
              {
                "average": 2270742.04,
                "count": 814655,
                "maximum": 2270804.279,
                "minimum": 2270662.239,
                "name": "Y",
                "position": 1,
                "stddev": 31.19810122,
                "variance": 973.32152
              },
              {
                "average": 2.560937031,
                "count": 814655,
                "maximum": 5.372192189,
                "minimum": 1.392192189,
                "name": "Z",
                "position": 2,
                "stddev": 0.4017554122,
                "variance": 0.1614074112
              },
              {
                "average": 17537.94545,
                "count": 814655,
                "maximum": 65535,
                "minimum": 869,
                "name": "Intensity",
                "position": 3,
                "stddev": 4988.514111,
                "variance": 24885273.04
              },
              {
                "average": 1.000096974,
                "count": 814655,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00984704426,
                "variance": 9.696428065e-05
              },
              {
                "average": 1.000193947,
                "count": 814655,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01392514824,
                "variance": 0.0001939097535
              },
              {
                "average": 0.4973725074,
                "count": 814655,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999934031,
                "variance": 0.2499934032
              },
              {
                "average": 0.0004885503679,
                "count": 814655,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02209778916,
                "variance": 0.0004883122859
              },
              {
                "average": 1.84349694,
                "count": 814655,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.131166325,
                "variance": 4.541869905
              },
              {
                "average": 1.935078221,
                "count": 814655,
                "maximum": 16.30200005,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.657213063,
                "variance": 93.26176414
              },
              {
                "average": 0.4791267469,
                "count": 814655,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995644239,
                "variance": 0.2495646136
              },
              {
                "average": 167.6430108,
                "count": 814655,
                "maximum": 201,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.7533643,
                "variance": 390.1954012
              },
              {
                "average": 216160787.5,
                "count": 814655,
                "maximum": 216161902.5,
                "minimum": 216158304.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1468.406512,
                "variance": 2156217.684
              },
              {
                "average": 0.4791267469,
                "count": 814655,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995644239,
                "variance": 0.2495646136
              },
              {
                "average": 0,
                "count": 814655,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 814655,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 814655,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1658874002,
                "count": 814655,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3719797582,
                "variance": 0.1383689405
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398634.0177,
              2270662.239,
              1.392192189,
              399112.4977,
              2270804.279,
              5.372192189
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398634.0176581815,
                    2270662.239425038,
                    1.392192188512953
                  ],
                  [
                    398634.0176581815,
                    2270804.279425038,
                    1.392192188512953
                  ],
                  [
                    399112.49765818147,
                    2270804.279425038,
                    5.372192188512953
                  ],
                  [
                    399112.49765818147,
                    2270662.239425038,
                    5.372192188512953
                  ],
                  [
                    398634.0176581815,
                    2270662.239425038,
                    1.392192188512953
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:45:02+00:00",
            "end_time": "2018-07-20T21:45:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_075.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.6235389003817,
              70.12159995486584,
              2.369077524040204
            ],
            [
              -143.62142188558357,
              70.1263355061574,
              2.369077524040204
            ],
            [
              -143.6076235434933,
              70.12556885750315,
              39.4890775240402
            ],
            [
              -143.6097432804569,
              70.12083348090991,
              39.4890775240402
            ],
            [
              -143.6235389003817,
              70.12159995486584,
              2.369077524040204
            ]
          ]
        ]
      },
      "bbox": [
        -143.6235389,
        70.12083348,
        2.369077524,
        -143.6076235,
        70.12633551,
        39.48907752
      ],
      "properties": {
        "datetime": "2018-07-20T22:41:46Z",
        "pc:count": 4730559,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399546.2771,
            "count": 4730559,
            "maximum": 399816.6798,
            "minimum": 399277.0798,
            "name": "X",
            "position": 0,
            "stddev": 133.1152889,
            "variance": 17719.68014
          },
          {
            "average": 2269683.151,
            "count": 4730559,
            "maximum": 2269947.075,
            "minimum": 2269421.555,
            "name": "Y",
            "position": 1,
            "stddev": 128.9511757,
            "variance": 16628.40572
          },
          {
            "average": 15.56070659,
            "count": 4730559,
            "maximum": 39.48907752,
            "minimum": 2.369077524,
            "name": "Z",
            "position": 2,
            "stddev": 2.001973,
            "variance": 4.007895894
          },
          {
            "average": 26926.33974,
            "count": 4730559,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9421.515545,
            "variance": 88764955.17
          },
          {
            "average": 1.009512618,
            "count": 4730559,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09912988136,
            "variance": 0.009826733378
          },
          {
            "average": 1.019028407,
            "count": 4730559,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1410269344,
            "variance": 0.01988859623
          },
          {
            "average": 0.4948451124,
            "count": 4730559,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999734793,
            "variance": 0.24997348
          },
          {
            "average": 0.0006567934149,
            "count": 4730559,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02561956627,
            "variance": 0.0006563621761
          },
          {
            "average": 3.022468592,
            "count": 4730559,
            "maximum": 21,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 5.238635853,
            "variance": 27.4433056
          },
          {
            "average": 3.506399707,
            "count": 4730559,
            "maximum": 16.39800072,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.04656555,
            "variance": 100.9334793
          },
          {
            "average": 0.5085747794,
            "count": 4730559,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999265206,
            "variance": 0.249926526
          },
          {
            "average": 168.6718485,
            "count": 4730559,
            "maximum": 210,
            "minimum": 152,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.82611965,
            "variance": 476.3794988
          },
          {
            "average": 216160447.8,
            "count": 4730559,
            "maximum": 216161706.2,
            "minimum": 216158283.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1384.532274,
            "variance": 1916929.618
          },
          {
            "average": 0.5085747794,
            "count": 4730559,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999265206,
            "variance": 0.249926526
          },
          {
            "average": 0,
            "count": 4730559,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4730559,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4730559,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2468871015,
            "count": 4730559,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4312005333,
            "variance": 0.1859338999
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399277.0798,
          2269421.555,
          2.369077524,
          399816.6798,
          2269947.075,
          39.48907752
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399277.07984616415,
                2269421.5553908367,
                2.369077524040204
              ],
              [
                399277.07984616415,
                2269947.075390836,
                2.369077524040204
              ],
              [
                399816.67984616413,
                2269947.075390836,
                39.4890775240402
              ],
              [
                399816.67984616413,
                2269421.5553908367,
                39.4890775240402
              ],
              [
                399277.07984616415,
                2269421.5553908367,
                2.369077524040204
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:41:46+00:00",
        "end_time": "2018-07-20T21:44:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_075.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_075.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_075.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_075.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6235389,
            70.12083348,
            2.369077524,
            -143.6076235,
            70.12633551,
            39.48907752
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.6235389003817,
                  70.12159995486584,
                  2.369077524040204
                ],
                [
                  -143.62142188558357,
                  70.1263355061574,
                  2.369077524040204
                ],
                [
                  -143.6076235434933,
                  70.12556885750315,
                  39.4890775240402
                ],
                [
                  -143.6097432804569,
                  70.12083348090991,
                  39.4890775240402
                ],
                [
                  -143.6235389003817,
                  70.12159995486584,
                  2.369077524040204
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_075.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_075.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:41:46Z",
            "pc:count": 4730559,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399546.2771,
                "count": 4730559,
                "maximum": 399816.6798,
                "minimum": 399277.0798,
                "name": "X",
                "position": 0,
                "stddev": 133.1152889,
                "variance": 17719.68014
              },
              {
                "average": 2269683.151,
                "count": 4730559,
                "maximum": 2269947.075,
                "minimum": 2269421.555,
                "name": "Y",
                "position": 1,
                "stddev": 128.9511757,
                "variance": 16628.40572
              },
              {
                "average": 15.56070659,
                "count": 4730559,
                "maximum": 39.48907752,
                "minimum": 2.369077524,
                "name": "Z",
                "position": 2,
                "stddev": 2.001973,
                "variance": 4.007895894
              },
              {
                "average": 26926.33974,
                "count": 4730559,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9421.515545,
                "variance": 88764955.17
              },
              {
                "average": 1.009512618,
                "count": 4730559,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09912988136,
                "variance": 0.009826733378
              },
              {
                "average": 1.019028407,
                "count": 4730559,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1410269344,
                "variance": 0.01988859623
              },
              {
                "average": 0.4948451124,
                "count": 4730559,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999734793,
                "variance": 0.24997348
              },
              {
                "average": 0.0006567934149,
                "count": 4730559,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02561956627,
                "variance": 0.0006563621761
              },
              {
                "average": 3.022468592,
                "count": 4730559,
                "maximum": 21,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 5.238635853,
                "variance": 27.4433056
              },
              {
                "average": 3.506399707,
                "count": 4730559,
                "maximum": 16.39800072,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.04656555,
                "variance": 100.9334793
              },
              {
                "average": 0.5085747794,
                "count": 4730559,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999265206,
                "variance": 0.249926526
              },
              {
                "average": 168.6718485,
                "count": 4730559,
                "maximum": 210,
                "minimum": 152,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.82611965,
                "variance": 476.3794988
              },
              {
                "average": 216160447.8,
                "count": 4730559,
                "maximum": 216161706.2,
                "minimum": 216158283.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1384.532274,
                "variance": 1916929.618
              },
              {
                "average": 0.5085747794,
                "count": 4730559,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999265206,
                "variance": 0.249926526
              },
              {
                "average": 0,
                "count": 4730559,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4730559,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4730559,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2468871015,
                "count": 4730559,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4312005333,
                "variance": 0.1859338999
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399277.0798,
              2269421.555,
              2.369077524,
              399816.6798,
              2269947.075,
              39.48907752
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399277.07984616415,
                    2269421.5553908367,
                    2.369077524040204
                  ],
                  [
                    399277.07984616415,
                    2269947.075390836,
                    2.369077524040204
                  ],
                  [
                    399816.67984616413,
                    2269947.075390836,
                    39.4890775240402
                  ],
                  [
                    399816.67984616413,
                    2269421.5553908367,
                    39.4890775240402
                  ],
                  [
                    399277.07984616415,
                    2269421.5553908367,
                    2.369077524040204
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:41:46+00:00",
            "end_time": "2018-07-20T21:44:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_049.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.63493174375904,
              70.11329447928863,
              9.212608856699774
            ],
            [
              -143.63281689954349,
              70.11803192875084,
              9.212608856699774
            ],
            [
              -143.61902512337744,
              70.11726626250459,
              53.092608856699776
            ],
            [
              -143.62114268886492,
              70.11252898750726,
              53.092608856699776
            ],
            [
              -143.63493174375904,
              70.11329447928863,
              9.212608856699774
            ]
          ]
        ]
      },
      "bbox": [
        -143.6349317,
        70.11252899,
        9.212608857,
        -143.6190251,
        70.11803193,
        53.09260886
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:20Z",
        "pc:count": 5867166,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399259.0323,
            "count": 5867166,
            "maximum": 399523.3084,
            "minimum": 398983.7884,
            "name": "X",
            "position": 0,
            "stddev": 131.6391186,
            "variance": 17328.85754
          },
          {
            "average": 2268721.74,
            "count": 5867166,
            "maximum": 2268979.415,
            "minimum": 2268453.675,
            "name": "Y",
            "position": 1,
            "stddev": 129.1509316,
            "variance": 16679.96314
          },
          {
            "average": 11.57168016,
            "count": 5867166,
            "maximum": 53.09260886,
            "minimum": 9.212608857,
            "name": "Z",
            "position": 2,
            "stddev": 0.7095944195,
            "variance": 0.5035242402
          },
          {
            "average": 27874.15763,
            "count": 5867166,
            "maximum": 65535,
            "minimum": 826,
            "name": "Intensity",
            "position": 3,
            "stddev": 8592.538807,
            "variance": 73831723.14
          },
          {
            "average": 1.000000682,
            "count": 5867166,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008256874749,
            "variance": 6.817598061e-07
          },
          {
            "average": 1.000001364,
            "count": 5867166,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001167698027,
            "variance": 1.363518683e-06
          },
          {
            "average": 0.502817033,
            "count": 5867166,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999921069,
            "variance": 0.2499921069
          },
          {
            "average": 0.0004393944197,
            "count": 5867166,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02095713308,
            "variance": 0.0004392014271
          },
          {
            "average": 1.626852385,
            "count": 5867166,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.823103694,
            "variance": 3.323707078
          },
          {
            "average": -0.9677553929,
            "count": 5867166,
            "maximum": 16.36800003,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.472710466,
            "variance": 89.73224357
          },
          {
            "average": 0.4854524314,
            "count": 5867166,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499788366,
            "variance": 0.2497884108
          },
          {
            "average": 171.2030507,
            "count": 5867166,
            "maximum": 210,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.6245199,
            "variance": 511.8689008
          },
          {
            "average": 216161021.4,
            "count": 5867166,
            "maximum": 216162100.3,
            "minimum": 216158492,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1230.559837,
            "variance": 1514277.512
          },
          {
            "average": 0.4854524314,
            "count": 5867166,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499788366,
            "variance": 0.2497884108
          },
          {
            "average": 0,
            "count": 5867166,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5867166,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5867166,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1750006732,
            "count": 5867166,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3799677121,
            "variance": 0.1443754622
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398983.7884,
          2268453.675,
          9.212608857,
          399523.3084,
          2268979.415,
          53.09260886
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398983.7884131145,
                2268453.674846947,
                9.212608856699774
              ],
              [
                398983.7884131145,
                2268979.4148469474,
                9.212608856699774
              ],
              [
                399523.3084131145,
                2268979.4148469474,
                53.092608856699776
              ],
              [
                399523.3084131145,
                2268453.674846947,
                53.092608856699776
              ],
              [
                398983.7884131145,
                2268453.674846947,
                9.212608856699774
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:20+00:00",
        "end_time": "2018-07-20T21:48:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_049.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_049.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_049.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_049.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6349317,
            70.11252899,
            9.212608857,
            -143.6190251,
            70.11803193,
            53.09260886
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.63493174375904,
                  70.11329447928863,
                  9.212608856699774
                ],
                [
                  -143.63281689954349,
                  70.11803192875084,
                  9.212608856699774
                ],
                [
                  -143.61902512337744,
                  70.11726626250459,
                  53.092608856699776
                ],
                [
                  -143.62114268886492,
                  70.11252898750726,
                  53.092608856699776
                ],
                [
                  -143.63493174375904,
                  70.11329447928863,
                  9.212608856699774
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_049.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_049.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:20Z",
            "pc:count": 5867166,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399259.0323,
                "count": 5867166,
                "maximum": 399523.3084,
                "minimum": 398983.7884,
                "name": "X",
                "position": 0,
                "stddev": 131.6391186,
                "variance": 17328.85754
              },
              {
                "average": 2268721.74,
                "count": 5867166,
                "maximum": 2268979.415,
                "minimum": 2268453.675,
                "name": "Y",
                "position": 1,
                "stddev": 129.1509316,
                "variance": 16679.96314
              },
              {
                "average": 11.57168016,
                "count": 5867166,
                "maximum": 53.09260886,
                "minimum": 9.212608857,
                "name": "Z",
                "position": 2,
                "stddev": 0.7095944195,
                "variance": 0.5035242402
              },
              {
                "average": 27874.15763,
                "count": 5867166,
                "maximum": 65535,
                "minimum": 826,
                "name": "Intensity",
                "position": 3,
                "stddev": 8592.538807,
                "variance": 73831723.14
              },
              {
                "average": 1.000000682,
                "count": 5867166,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008256874749,
                "variance": 6.817598061e-07
              },
              {
                "average": 1.000001364,
                "count": 5867166,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001167698027,
                "variance": 1.363518683e-06
              },
              {
                "average": 0.502817033,
                "count": 5867166,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999921069,
                "variance": 0.2499921069
              },
              {
                "average": 0.0004393944197,
                "count": 5867166,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02095713308,
                "variance": 0.0004392014271
              },
              {
                "average": 1.626852385,
                "count": 5867166,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.823103694,
                "variance": 3.323707078
              },
              {
                "average": -0.9677553929,
                "count": 5867166,
                "maximum": 16.36800003,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.472710466,
                "variance": 89.73224357
              },
              {
                "average": 0.4854524314,
                "count": 5867166,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499788366,
                "variance": 0.2497884108
              },
              {
                "average": 171.2030507,
                "count": 5867166,
                "maximum": 210,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.6245199,
                "variance": 511.8689008
              },
              {
                "average": 216161021.4,
                "count": 5867166,
                "maximum": 216162100.3,
                "minimum": 216158492,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1230.559837,
                "variance": 1514277.512
              },
              {
                "average": 0.4854524314,
                "count": 5867166,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499788366,
                "variance": 0.2497884108
              },
              {
                "average": 0,
                "count": 5867166,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5867166,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5867166,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1750006732,
                "count": 5867166,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3799677121,
                "variance": 0.1443754622
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398983.7884,
              2268453.675,
              9.212608857,
              399523.3084,
              2268979.415,
              53.09260886
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398983.7884131145,
                    2268453.674846947,
                    9.212608856699774
                  ],
                  [
                    398983.7884131145,
                    2268979.4148469474,
                    9.212608856699774
                  ],
                  [
                    399523.3084131145,
                    2268979.4148469474,
                    53.092608856699776
                  ],
                  [
                    399523.3084131145,
                    2268453.674846947,
                    53.092608856699776
                  ],
                  [
                    398983.7884131145,
                    2268453.674846947,
                    9.212608856699774
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:20+00:00",
            "end_time": "2018-07-20T21:48:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_062.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.62320898494022,
              70.11750108547189,
              -0.292425382522305
            ],
            [
              -143.62109138783006,
              70.12223851072208,
              -0.292425382522305
            ],
            [
              -143.60730620951418,
              70.12147245204065,
              18.387574617477696
            ],
            [
              -143.60942652684855,
              70.11673520138416,
              18.387574617477696
            ],
            [
              -143.62320898494022,
              70.11750108547189,
              -0.292425382522305
            ]
          ]
        ]
      },
      "bbox": [
        -143.623209,
        70.1167352,
        -0.2924253825,
        -143.6073062,
        70.12223851,
        18.38757462
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:27Z",
        "pc:count": 6010613,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399639.9575,
            "count": 6010613,
            "maximum": 399898.7747,
            "minimum": 399359.5947,
            "name": "X",
            "position": 0,
            "stddev": 133.2089883,
            "variance": 17744.63457
          },
          {
            "average": 2269232.624,
            "count": 6010613,
            "maximum": 2269505.419,
            "minimum": 2268979.679,
            "name": "Y",
            "position": 1,
            "stddev": 128.2592429,
            "variance": 16450.43338
          },
          {
            "average": 14.6328243,
            "count": 6010613,
            "maximum": 18.38757462,
            "minimum": -0.2924253825,
            "name": "Z",
            "position": 2,
            "stddev": 1.622638919,
            "variance": 2.63295706
          },
          {
            "average": 32548.89987,
            "count": 6010613,
            "maximum": 65535,
            "minimum": 869,
            "name": "Intensity",
            "position": 3,
            "stddev": 6381.737764,
            "variance": 40726576.88
          },
          {
            "average": 1.000037101,
            "count": 6010613,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006090949909,
            "variance": 3.709967079e-05
          },
          {
            "average": 1.000073537,
            "count": 6010613,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00857503337,
            "variance": 7.353119729e-05
          },
          {
            "average": 0.4937198585,
            "count": 6010613,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999605999,
            "variance": 0.2499606014
          },
          {
            "average": 0.0006026007663,
            "count": 6010613,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02454053257,
            "variance": 0.0006022377389
          },
          {
            "average": 1.238281021,
            "count": 6010613,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4278727527,
            "variance": 0.1830750925
          },
          {
            "average": 3.999735602,
            "count": 6010613,
            "maximum": 16.40399933,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.714278571,
            "variance": 94.36720815
          },
          {
            "average": 0.5089121526,
            "count": 6010613,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999206088,
            "variance": 0.2499206151
          },
          {
            "average": 171.1443024,
            "count": 6010613,
            "maximum": 210,
            "minimum": 152,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.56679891,
            "variance": 555.3940108
          },
          {
            "average": 216160749.9,
            "count": 6010613,
            "maximum": 216162107.4,
            "minimum": 216158278.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1254.631343,
            "variance": 1574099.807
          },
          {
            "average": 0.5089121526,
            "count": 6010613,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999206088,
            "variance": 0.2499206151
          },
          {
            "average": 0,
            "count": 6010613,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6010613,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6010613,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2375717751,
            "count": 6010613,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4255954146,
            "variance": 0.1811314569
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399359.5947,
          2268979.679,
          -0.2924253825,
          399898.7747,
          2269505.419,
          18.38757462
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399359.5947365567,
                2268979.679015037,
                -0.292425382522305
              ],
              [
                399359.5947365567,
                2269505.4190150374,
                -0.292425382522305
              ],
              [
                399898.77473655675,
                2269505.4190150374,
                18.387574617477696
              ],
              [
                399898.77473655675,
                2268979.679015037,
                18.387574617477696
              ],
              [
                399359.5947365567,
                2268979.679015037,
                -0.292425382522305
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:27+00:00",
        "end_time": "2018-07-20T21:44:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_062.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_062.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_062.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_062.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.623209,
            70.1167352,
            -0.2924253825,
            -143.6073062,
            70.12223851,
            18.38757462
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.62320898494022,
                  70.11750108547189,
                  -0.292425382522305
                ],
                [
                  -143.62109138783006,
                  70.12223851072208,
                  -0.292425382522305
                ],
                [
                  -143.60730620951418,
                  70.12147245204065,
                  18.387574617477696
                ],
                [
                  -143.60942652684855,
                  70.11673520138416,
                  18.387574617477696
                ],
                [
                  -143.62320898494022,
                  70.11750108547189,
                  -0.292425382522305
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_062.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_062.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:27Z",
            "pc:count": 6010613,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399639.9575,
                "count": 6010613,
                "maximum": 399898.7747,
                "minimum": 399359.5947,
                "name": "X",
                "position": 0,
                "stddev": 133.2089883,
                "variance": 17744.63457
              },
              {
                "average": 2269232.624,
                "count": 6010613,
                "maximum": 2269505.419,
                "minimum": 2268979.679,
                "name": "Y",
                "position": 1,
                "stddev": 128.2592429,
                "variance": 16450.43338
              },
              {
                "average": 14.6328243,
                "count": 6010613,
                "maximum": 18.38757462,
                "minimum": -0.2924253825,
                "name": "Z",
                "position": 2,
                "stddev": 1.622638919,
                "variance": 2.63295706
              },
              {
                "average": 32548.89987,
                "count": 6010613,
                "maximum": 65535,
                "minimum": 869,
                "name": "Intensity",
                "position": 3,
                "stddev": 6381.737764,
                "variance": 40726576.88
              },
              {
                "average": 1.000037101,
                "count": 6010613,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006090949909,
                "variance": 3.709967079e-05
              },
              {
                "average": 1.000073537,
                "count": 6010613,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00857503337,
                "variance": 7.353119729e-05
              },
              {
                "average": 0.4937198585,
                "count": 6010613,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999605999,
                "variance": 0.2499606014
              },
              {
                "average": 0.0006026007663,
                "count": 6010613,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02454053257,
                "variance": 0.0006022377389
              },
              {
                "average": 1.238281021,
                "count": 6010613,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4278727527,
                "variance": 0.1830750925
              },
              {
                "average": 3.999735602,
                "count": 6010613,
                "maximum": 16.40399933,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.714278571,
                "variance": 94.36720815
              },
              {
                "average": 0.5089121526,
                "count": 6010613,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999206088,
                "variance": 0.2499206151
              },
              {
                "average": 171.1443024,
                "count": 6010613,
                "maximum": 210,
                "minimum": 152,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.56679891,
                "variance": 555.3940108
              },
              {
                "average": 216160749.9,
                "count": 6010613,
                "maximum": 216162107.4,
                "minimum": 216158278.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1254.631343,
                "variance": 1574099.807
              },
              {
                "average": 0.5089121526,
                "count": 6010613,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999206088,
                "variance": 0.2499206151
              },
              {
                "average": 0,
                "count": 6010613,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6010613,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6010613,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2375717751,
                "count": 6010613,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4255954146,
                "variance": 0.1811314569
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399359.5947,
              2268979.679,
              -0.2924253825,
              399898.7747,
              2269505.419,
              18.38757462
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399359.5947365567,
                    2268979.679015037,
                    -0.292425382522305
                  ],
                  [
                    399359.5947365567,
                    2269505.4190150374,
                    -0.292425382522305
                  ],
                  [
                    399898.77473655675,
                    2269505.4190150374,
                    18.387574617477696
                  ],
                  [
                    399898.77473655675,
                    2268979.679015037,
                    18.387574617477696
                  ],
                  [
                    399359.5947365567,
                    2268979.679015037,
                    -0.292425382522305
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:27+00:00",
            "end_time": "2018-07-20T21:44:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_089.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.61181863476457,
              70.12580489015382,
              1.385533849482322
            ],
            [
              -143.60969838329825,
              70.13054149860072,
              1.385533849482322
            ],
            [
              -143.5958984570201,
              70.12977400255053,
              23.165533849482323
            ],
            [
              -143.5980214318401,
              70.12503756907445,
              23.165533849482323
            ],
            [
              -143.61181863476457,
              70.12580489015382,
              1.385533849482322
            ]
          ]
        ]
      },
      "bbox": [
        -143.6118186,
        70.12503757,
        1.385533849,
        -143.5958985,
        70.1305415,
        23.16553385
      ],
      "properties": {
        "datetime": "2018-07-20T22:36:27Z",
        "pc:count": 2916188,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399916.9315,
            "count": 2916188,
            "maximum": 400192.1538,
            "minimum": 399652.5738,
            "name": "X",
            "position": 0,
            "stddev": 131.5766579,
            "variance": 17312.41691
          },
          {
            "average": 2270165.581,
            "count": 2916188,
            "maximum": 2270473.023,
            "minimum": 2269947.383,
            "name": "Y",
            "position": 1,
            "stddev": 117.2360609,
            "variance": 13744.29397
          },
          {
            "average": 4.016911288,
            "count": 2916188,
            "maximum": 23.16553385,
            "minimum": 1.385533849,
            "name": "Z",
            "position": 2,
            "stddev": 2.193299841,
            "variance": 4.810564194
          },
          {
            "average": 28794.71468,
            "count": 2916188,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11299.03701,
            "variance": 127668237.4
          },
          {
            "average": 1.002976488,
            "count": 2916188,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05525720227,
            "variance": 0.003053358403
          },
          {
            "average": 1.005937889,
            "count": 2916188,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07845391413,
            "variance": 0.006155016643
          },
          {
            "average": 0.5030042645,
            "count": 2916188,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.49999106,
            "variance": 0.2499910601
          },
          {
            "average": 0.0007043441644,
            "count": 2916188,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02653013956,
            "variance": 0.000703848305
          },
          {
            "average": 2.59678697,
            "count": 2916188,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.877644216,
            "variance": 8.280836234
          },
          {
            "average": -0.7382243451,
            "count": 2916188,
            "maximum": 16.40399933,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.07355095,
            "variance": 101.4764287
          },
          {
            "average": 0.5002955914,
            "count": 2916188,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999984,
            "variance": 0.2499999984
          },
          {
            "average": 158.2401587,
            "count": 2916188,
            "maximum": 200,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.16891238,
            "variance": 261.4337274
          },
          {
            "average": 216160722.5,
            "count": 2916188,
            "maximum": 216161387.5,
            "minimum": 216158285.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 951.5544789,
            "variance": 905455.9263
          },
          {
            "average": 0.5002955914,
            "count": 2916188,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999984,
            "variance": 0.2499999984
          },
          {
            "average": 0,
            "count": 2916188,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2916188,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2916188,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2163649943,
            "count": 2916188,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4117660036,
            "variance": 0.1695512417
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399652.5738,
          2269947.383,
          1.385533849,
          400192.1538,
          2270473.023,
          23.16553385
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399652.57378886396,
                2269947.3826550194,
                1.385533849482322
              ],
              [
                399652.57378886396,
                2270473.022655019,
                1.385533849482322
              ],
              [
                400192.1537888639,
                2270473.022655019,
                23.165533849482323
              ],
              [
                400192.1537888639,
                2269947.3826550194,
                23.165533849482323
              ],
              [
                399652.57378886396,
                2269947.3826550194,
                1.385533849482322
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:36:27+00:00",
        "end_time": "2018-07-20T21:44:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_089.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_089.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_089.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_089.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6118186,
            70.12503757,
            1.385533849,
            -143.5958985,
            70.1305415,
            23.16553385
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.61181863476457,
                  70.12580489015382,
                  1.385533849482322
                ],
                [
                  -143.60969838329825,
                  70.13054149860072,
                  1.385533849482322
                ],
                [
                  -143.5958984570201,
                  70.12977400255053,
                  23.165533849482323
                ],
                [
                  -143.5980214318401,
                  70.12503756907445,
                  23.165533849482323
                ],
                [
                  -143.61181863476457,
                  70.12580489015382,
                  1.385533849482322
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_089.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_089.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:36:27Z",
            "pc:count": 2916188,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399916.9315,
                "count": 2916188,
                "maximum": 400192.1538,
                "minimum": 399652.5738,
                "name": "X",
                "position": 0,
                "stddev": 131.5766579,
                "variance": 17312.41691
              },
              {
                "average": 2270165.581,
                "count": 2916188,
                "maximum": 2270473.023,
                "minimum": 2269947.383,
                "name": "Y",
                "position": 1,
                "stddev": 117.2360609,
                "variance": 13744.29397
              },
              {
                "average": 4.016911288,
                "count": 2916188,
                "maximum": 23.16553385,
                "minimum": 1.385533849,
                "name": "Z",
                "position": 2,
                "stddev": 2.193299841,
                "variance": 4.810564194
              },
              {
                "average": 28794.71468,
                "count": 2916188,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11299.03701,
                "variance": 127668237.4
              },
              {
                "average": 1.002976488,
                "count": 2916188,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05525720227,
                "variance": 0.003053358403
              },
              {
                "average": 1.005937889,
                "count": 2916188,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07845391413,
                "variance": 0.006155016643
              },
              {
                "average": 0.5030042645,
                "count": 2916188,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.49999106,
                "variance": 0.2499910601
              },
              {
                "average": 0.0007043441644,
                "count": 2916188,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02653013956,
                "variance": 0.000703848305
              },
              {
                "average": 2.59678697,
                "count": 2916188,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.877644216,
                "variance": 8.280836234
              },
              {
                "average": -0.7382243451,
                "count": 2916188,
                "maximum": 16.40399933,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.07355095,
                "variance": 101.4764287
              },
              {
                "average": 0.5002955914,
                "count": 2916188,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999984,
                "variance": 0.2499999984
              },
              {
                "average": 158.2401587,
                "count": 2916188,
                "maximum": 200,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.16891238,
                "variance": 261.4337274
              },
              {
                "average": 216160722.5,
                "count": 2916188,
                "maximum": 216161387.5,
                "minimum": 216158285.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 951.5544789,
                "variance": 905455.9263
              },
              {
                "average": 0.5002955914,
                "count": 2916188,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999984,
                "variance": 0.2499999984
              },
              {
                "average": 0,
                "count": 2916188,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2916188,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2916188,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2163649943,
                "count": 2916188,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4117660036,
                "variance": 0.1695512417
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399652.5738,
              2269947.383,
              1.385533849,
              400192.1538,
              2270473.023,
              23.16553385
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399652.57378886396,
                    2269947.3826550194,
                    1.385533849482322
                  ],
                  [
                    399652.57378886396,
                    2270473.022655019,
                    1.385533849482322
                  ],
                  [
                    400192.1537888639,
                    2270473.022655019,
                    23.165533849482323
                  ],
                  [
                    400192.1537888639,
                    2269947.3826550194,
                    23.165533849482323
                  ],
                  [
                    399652.57378886396,
                    2269947.3826550194,
                    1.385533849482322
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:36:27+00:00",
            "end_time": "2018-07-20T21:44:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_090.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.5997702087045,
              70.12591095278854,
              1.322064032080398
            ],
            [
              -143.5978594780462,
              70.130174533304,
              1.322064032080398
            ],
            [
              -143.5913788656085,
              70.12981381743514,
              9.602064032080397
            ],
            [
              -143.5932907474437,
              70.12555031094372,
              9.602064032080397
            ],
            [
              -143.5997702087045,
              70.12591095278854,
              1.322064032080398
            ]
          ]
        ]
      },
      "bbox": [
        -143.5997702,
        70.12555031,
        1.322064032,
        -143.5913789,
        70.13017453,
        9.602064032
      ],
      "properties": {
        "datetime": "2018-07-20T22:31:27Z",
        "pc:count": 661467,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400217.7308,
            "count": 661467,
            "maximum": 400363.8924,
            "minimum": 400110.4924,
            "name": "X",
            "position": 0,
            "stddev": 54.9417069,
            "variance": 3018.591158
          },
          {
            "average": 2270273.739,
            "count": 661467,
            "maximum": 2270504.574,
            "minimum": 2270031.414,
            "name": "Y",
            "position": 1,
            "stddev": 131.0669886,
            "variance": 17178.55549
          },
          {
            "average": 2.130285516,
            "count": 661467,
            "maximum": 9.602064032,
            "minimum": 1.322064032,
            "name": "Z",
            "position": 2,
            "stddev": 0.8766759035,
            "variance": 0.7685606399
          },
          {
            "average": 15350.77514,
            "count": 661467,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11039.13576,
            "variance": 121862518.3
          },
          {
            "average": 1.008597557,
            "count": 661467,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09263422533,
            "variance": 0.008581099702
          },
          {
            "average": 1.017190578,
            "count": 661467,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1306423819,
            "variance": 0.01706743194
          },
          {
            "average": 0.5063381847,
            "count": 661467,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999602037,
            "variance": 0.2499602053
          },
          {
            "average": 0.00054726842,
            "count": 661467,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0233873843,
            "variance": 0.0005469697442
          },
          {
            "average": 4.91242647,
            "count": 661467,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.822125748,
            "variance": 14.60864523
          },
          {
            "average": -1.360140588,
            "count": 661467,
            "maximum": 16.20599937,
            "minimum": -13.83600044,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.692077191,
            "variance": 75.5522059
          },
          {
            "average": 0.4772195741,
            "count": 661467,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994811602,
            "variance": 0.2494814294
          },
          {
            "average": 150.8483205,
            "count": 661467,
            "maximum": 152,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7462658633,
            "variance": 0.5569127387
          },
          {
            "average": 216160902.5,
            "count": 661467,
            "maximum": 216161087.1,
            "minimum": 216160757.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 121.1153077,
            "variance": 14668.91775
          },
          {
            "average": 0.4772195741,
            "count": 661467,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994811602,
            "variance": 0.2494814294
          },
          {
            "average": 0,
            "count": 661467,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 661467,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 661467,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08813591608,
            "count": 661467,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2834926769,
            "variance": 0.08036809787
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          400110.4924,
          2270031.414,
          1.322064032,
          400363.8924,
          2270504.574,
          9.602064032
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                400110.492441701,
                2270031.414446147,
                1.322064032080398
              ],
              [
                400110.492441701,
                2270504.5744461473,
                1.322064032080398
              ],
              [
                400363.892441701,
                2270504.5744461473,
                9.602064032080397
              ],
              [
                400363.892441701,
                2270031.414446147,
                9.602064032080397
              ],
              [
                400110.492441701,
                2270031.414446147,
                1.322064032080398
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:31:27+00:00",
        "end_time": "2018-07-20T22:25:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_090.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_090.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_090.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_090.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.5997702,
            70.12555031,
            1.322064032,
            -143.5913789,
            70.13017453,
            9.602064032
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.5997702087045,
                  70.12591095278854,
                  1.322064032080398
                ],
                [
                  -143.5978594780462,
                  70.130174533304,
                  1.322064032080398
                ],
                [
                  -143.5913788656085,
                  70.12981381743514,
                  9.602064032080397
                ],
                [
                  -143.5932907474437,
                  70.12555031094372,
                  9.602064032080397
                ],
                [
                  -143.5997702087045,
                  70.12591095278854,
                  1.322064032080398
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_090.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_090.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:31:27Z",
            "pc:count": 661467,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400217.7308,
                "count": 661467,
                "maximum": 400363.8924,
                "minimum": 400110.4924,
                "name": "X",
                "position": 0,
                "stddev": 54.9417069,
                "variance": 3018.591158
              },
              {
                "average": 2270273.739,
                "count": 661467,
                "maximum": 2270504.574,
                "minimum": 2270031.414,
                "name": "Y",
                "position": 1,
                "stddev": 131.0669886,
                "variance": 17178.55549
              },
              {
                "average": 2.130285516,
                "count": 661467,
                "maximum": 9.602064032,
                "minimum": 1.322064032,
                "name": "Z",
                "position": 2,
                "stddev": 0.8766759035,
                "variance": 0.7685606399
              },
              {
                "average": 15350.77514,
                "count": 661467,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11039.13576,
                "variance": 121862518.3
              },
              {
                "average": 1.008597557,
                "count": 661467,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09263422533,
                "variance": 0.008581099702
              },
              {
                "average": 1.017190578,
                "count": 661467,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1306423819,
                "variance": 0.01706743194
              },
              {
                "average": 0.5063381847,
                "count": 661467,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999602037,
                "variance": 0.2499602053
              },
              {
                "average": 0.00054726842,
                "count": 661467,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0233873843,
                "variance": 0.0005469697442
              },
              {
                "average": 4.91242647,
                "count": 661467,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.822125748,
                "variance": 14.60864523
              },
              {
                "average": -1.360140588,
                "count": 661467,
                "maximum": 16.20599937,
                "minimum": -13.83600044,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.692077191,
                "variance": 75.5522059
              },
              {
                "average": 0.4772195741,
                "count": 661467,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994811602,
                "variance": 0.2494814294
              },
              {
                "average": 150.8483205,
                "count": 661467,
                "maximum": 152,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7462658633,
                "variance": 0.5569127387
              },
              {
                "average": 216160902.5,
                "count": 661467,
                "maximum": 216161087.1,
                "minimum": 216160757.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 121.1153077,
                "variance": 14668.91775
              },
              {
                "average": 0.4772195741,
                "count": 661467,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994811602,
                "variance": 0.2494814294
              },
              {
                "average": 0,
                "count": 661467,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 661467,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 661467,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08813591608,
                "count": 661467,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2834926769,
                "variance": 0.08036809787
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              400110.4924,
              2270031.414,
              1.322064032,
              400363.8924,
              2270504.574,
              9.602064032
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    400110.492441701,
                    2270031.414446147,
                    1.322064032080398
                  ],
                  [
                    400110.492441701,
                    2270504.5744461473,
                    1.322064032080398
                  ],
                  [
                    400363.892441701,
                    2270504.5744461473,
                    9.602064032080397
                  ],
                  [
                    400363.892441701,
                    2270031.414446147,
                    9.602064032080397
                  ],
                  [
                    400110.492441701,
                    2270031.414446147,
                    1.322064032080398
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:31:27+00:00",
            "end_time": "2018-07-20T22:25:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_076.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.6115020981758,
              70.12170689188709,
              -16.969219850848496
            ],
            [
              -143.6093819925749,
              70.12644375235915,
              -16.969219850848496
            ],
            [
              -143.59558500436083,
              70.12567627869672,
              27.510780149151508
            ],
            [
              -143.59770783245978,
              70.12093959316032,
              27.510780149151508
            ],
            [
              -143.6115020981758,
              70.12170689188709,
              -16.969219850848496
            ]
          ]
        ]
      },
      "bbox": [
        -143.6115021,
        70.12093959,
        -16.96921985,
        -143.595585,
        70.12644375,
        27.51078015
      ],
      "properties": {
        "datetime": "2018-07-20T22:36:35Z",
        "pc:count": 4020127,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399995.6941,
            "count": 4020127,
            "maximum": 400274.1973,
            "minimum": 399734.6373,
            "name": "X",
            "position": 0,
            "stddev": 129.5131972,
            "variance": 16773.66826
          },
          {
            "average": 2269761.945,
            "count": 4020127,
            "maximum": 2270031.224,
            "minimum": 2269505.544,
            "name": "Y",
            "position": 1,
            "stddev": 130.0593443,
            "variance": 16915.43303
          },
          {
            "average": 7.703803559,
            "count": 4020127,
            "maximum": 27.51078015,
            "minimum": -16.96921985,
            "name": "Z",
            "position": 2,
            "stddev": 2.96425777,
            "variance": 8.786824127
          },
          {
            "average": 30698.63433,
            "count": 4020127,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8777.77834,
            "variance": 77049392.58
          },
          {
            "average": 1.005272968,
            "count": 4020127,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0737980595,
            "variance": 0.005446153586
          },
          {
            "average": 1.010542453,
            "count": 4020127,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1050062785,
            "variance": 0.01102631852
          },
          {
            "average": 0.5003366809,
            "count": 4020127,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999488,
            "variance": 0.2499999488
          },
          {
            "average": 0.000651471956,
            "count": 4020127,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02551563643,
            "variance": 0.0006510477022
          },
          {
            "average": 1.603110051,
            "count": 4020127,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.542518716,
            "variance": 2.379363989
          },
          {
            "average": 0.9240696223,
            "count": 4020127,
            "maximum": 16.31399918,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39323252,
            "variance": 108.0192822
          },
          {
            "average": 0.5094903718,
            "count": 4020127,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999099869,
            "variance": 0.249909995
          },
          {
            "average": 166.6074069,
            "count": 4020127,
            "maximum": 210,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.42924383,
            "variance": 548.9294665
          },
          {
            "average": 216160532.8,
            "count": 4020127,
            "maximum": 216161395.3,
            "minimum": 216158278.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1065.289996,
            "variance": 1134842.777
          },
          {
            "average": 0.5094903718,
            "count": 4020127,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999099869,
            "variance": 0.249909995
          },
          {
            "average": 0,
            "count": 4020127,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4020127,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4020127,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2446407788,
            "count": 4020127,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4298740677,
            "variance": 0.1847917141
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399734.6373,
          2269505.544,
          -16.96921985,
          400274.1973,
          2270031.224,
          27.51078015
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399734.63733931875,
                2269505.544365367,
                -16.969219850848496
              ],
              [
                399734.63733931875,
                2270031.2243653666,
                -16.969219850848496
              ],
              [
                400274.1973393188,
                2270031.2243653666,
                27.510780149151508
              ],
              [
                400274.1973393188,
                2269505.544365367,
                27.510780149151508
              ],
              [
                399734.63733931875,
                2269505.544365367,
                -16.969219850848496
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:36:35+00:00",
        "end_time": "2018-07-20T21:44:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_076.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_076.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_076.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_076.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6115021,
            70.12093959,
            -16.96921985,
            -143.595585,
            70.12644375,
            27.51078015
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.6115020981758,
                  70.12170689188709,
                  -16.969219850848496
                ],
                [
                  -143.6093819925749,
                  70.12644375235915,
                  -16.969219850848496
                ],
                [
                  -143.59558500436083,
                  70.12567627869672,
                  27.510780149151508
                ],
                [
                  -143.59770783245978,
                  70.12093959316032,
                  27.510780149151508
                ],
                [
                  -143.6115020981758,
                  70.12170689188709,
                  -16.969219850848496
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_076.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_076.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:36:35Z",
            "pc:count": 4020127,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399995.6941,
                "count": 4020127,
                "maximum": 400274.1973,
                "minimum": 399734.6373,
                "name": "X",
                "position": 0,
                "stddev": 129.5131972,
                "variance": 16773.66826
              },
              {
                "average": 2269761.945,
                "count": 4020127,
                "maximum": 2270031.224,
                "minimum": 2269505.544,
                "name": "Y",
                "position": 1,
                "stddev": 130.0593443,
                "variance": 16915.43303
              },
              {
                "average": 7.703803559,
                "count": 4020127,
                "maximum": 27.51078015,
                "minimum": -16.96921985,
                "name": "Z",
                "position": 2,
                "stddev": 2.96425777,
                "variance": 8.786824127
              },
              {
                "average": 30698.63433,
                "count": 4020127,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8777.77834,
                "variance": 77049392.58
              },
              {
                "average": 1.005272968,
                "count": 4020127,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0737980595,
                "variance": 0.005446153586
              },
              {
                "average": 1.010542453,
                "count": 4020127,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1050062785,
                "variance": 0.01102631852
              },
              {
                "average": 0.5003366809,
                "count": 4020127,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999488,
                "variance": 0.2499999488
              },
              {
                "average": 0.000651471956,
                "count": 4020127,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02551563643,
                "variance": 0.0006510477022
              },
              {
                "average": 1.603110051,
                "count": 4020127,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.542518716,
                "variance": 2.379363989
              },
              {
                "average": 0.9240696223,
                "count": 4020127,
                "maximum": 16.31399918,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39323252,
                "variance": 108.0192822
              },
              {
                "average": 0.5094903718,
                "count": 4020127,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999099869,
                "variance": 0.249909995
              },
              {
                "average": 166.6074069,
                "count": 4020127,
                "maximum": 210,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.42924383,
                "variance": 548.9294665
              },
              {
                "average": 216160532.8,
                "count": 4020127,
                "maximum": 216161395.3,
                "minimum": 216158278.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1065.289996,
                "variance": 1134842.777
              },
              {
                "average": 0.5094903718,
                "count": 4020127,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999099869,
                "variance": 0.249909995
              },
              {
                "average": 0,
                "count": 4020127,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4020127,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4020127,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2446407788,
                "count": 4020127,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4298740677,
                "variance": 0.1847917141
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399734.6373,
              2269505.544,
              -16.96921985,
              400274.1973,
              2270031.224,
              27.51078015
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399734.63733931875,
                    2269505.544365367,
                    -16.969219850848496
                  ],
                  [
                    399734.63733931875,
                    2270031.2243653666,
                    -16.969219850848496
                  ],
                  [
                    400274.1973393188,
                    2270031.2243653666,
                    27.510780149151508
                  ],
                  [
                    400274.1973393188,
                    2269505.544365367,
                    27.510780149151508
                  ],
                  [
                    399734.63733931875,
                    2269505.544365367,
                    -16.969219850848496
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:36:35+00:00",
            "end_time": "2018-07-20T21:44:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_077.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.59945825497738,
              70.12181613179834,
              1.418840628386733
            ],
            [
              -143.59754869026295,
              70.1260776324806,
              1.418840628386733
            ],
            [
              -143.59106410315346,
              70.12571662914134,
              10.158840628386734
            ],
            [
              -143.5929748190111,
              70.12145520248934,
              10.158840628386734
            ],
            [
              -143.59945825497738,
              70.12181613179834,
              1.418840628386733
            ]
          ]
        ]
      },
      "bbox": [
        -143.5994583,
        70.1214552,
        1.418840628,
        -143.5910641,
        70.12607763,
        10.15884063
      ],
      "properties": {
        "datetime": "2018-07-20T22:31:33Z",
        "pc:count": 814833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400320.4036,
            "count": 814833,
            "maximum": 400446.0068,
            "minimum": 400192.4068,
            "name": "X",
            "position": 0,
            "stddev": 55.26537359,
            "variance": 3054.261518
          },
          {
            "average": 2269808.849,
            "count": 814833,
            "maximum": 2270062.848,
            "minimum": 2269589.908,
            "name": "Y",
            "position": 1,
            "stddev": 127.3935738,
            "variance": 16229.12264
          },
          {
            "average": 1.648277396,
            "count": 814833,
            "maximum": 10.15884063,
            "minimum": 1.418840628,
            "name": "Z",
            "position": 2,
            "stddev": 0.4462718932,
            "variance": 0.1991586026
          },
          {
            "average": 8629.9565,
            "count": 814833,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7665.773783,
            "variance": 58764087.69
          },
          {
            "average": 1.001213746,
            "count": 814833,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03509857401,
            "variance": 0.001231909897
          },
          {
            "average": 1.002415219,
            "count": 814833,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04968195193,
            "variance": 0.002468296347
          },
          {
            "average": 0.5064166522,
            "count": 814833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999591317,
            "variance": 0.2499591333
          },
          {
            "average": 0.0007351199571,
            "count": 814833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02710314479,
            "variance": 0.0007345804573
          },
          {
            "average": 8.306794153,
            "count": 814833,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.924010912,
            "variance": 3.701817991
          },
          {
            "average": -1.733190555,
            "count": 814833,
            "maximum": 16.27799988,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.556696256,
            "variance": 57.10365831
          },
          {
            "average": 0.4814704363,
            "count": 814833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996568439,
            "variance": 0.2496569617
          },
          {
            "average": 161.5769415,
            "count": 814833,
            "maximum": 210,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.99188787,
            "variance": 528.6269077
          },
          {
            "average": 216160809.8,
            "count": 814833,
            "maximum": 216161093.6,
            "minimum": 216158278,
            "name": "GpsTime",
            "position": 12,
            "stddev": 172.0908402,
            "variance": 29615.25727
          },
          {
            "average": 0.4814704363,
            "count": 814833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996568439,
            "variance": 0.2496569617
          },
          {
            "average": 0,
            "count": 814833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 814833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 814833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03414810151,
            "count": 814833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1816096064,
            "variance": 0.03298204915
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          400192.4068,
          2269589.908,
          1.418840628,
          400446.0068,
          2270062.848,
          10.15884063
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                400192.4068353674,
                2269589.9077196033,
                1.418840628386733
              ],
              [
                400192.4068353674,
                2270062.8477196037,
                1.418840628386733
              ],
              [
                400446.00683536736,
                2270062.8477196037,
                10.158840628386734
              ],
              [
                400446.00683536736,
                2269589.9077196033,
                10.158840628386734
              ],
              [
                400192.4068353674,
                2269589.9077196033,
                1.418840628386733
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:31:33+00:00",
        "end_time": "2018-07-20T21:44:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_077.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_077.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_077.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_077.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.5994583,
            70.1214552,
            1.418840628,
            -143.5910641,
            70.12607763,
            10.15884063
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.59945825497738,
                  70.12181613179834,
                  1.418840628386733
                ],
                [
                  -143.59754869026295,
                  70.1260776324806,
                  1.418840628386733
                ],
                [
                  -143.59106410315346,
                  70.12571662914134,
                  10.158840628386734
                ],
                [
                  -143.5929748190111,
                  70.12145520248934,
                  10.158840628386734
                ],
                [
                  -143.59945825497738,
                  70.12181613179834,
                  1.418840628386733
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_077.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_077.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:31:33Z",
            "pc:count": 814833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400320.4036,
                "count": 814833,
                "maximum": 400446.0068,
                "minimum": 400192.4068,
                "name": "X",
                "position": 0,
                "stddev": 55.26537359,
                "variance": 3054.261518
              },
              {
                "average": 2269808.849,
                "count": 814833,
                "maximum": 2270062.848,
                "minimum": 2269589.908,
                "name": "Y",
                "position": 1,
                "stddev": 127.3935738,
                "variance": 16229.12264
              },
              {
                "average": 1.648277396,
                "count": 814833,
                "maximum": 10.15884063,
                "minimum": 1.418840628,
                "name": "Z",
                "position": 2,
                "stddev": 0.4462718932,
                "variance": 0.1991586026
              },
              {
                "average": 8629.9565,
                "count": 814833,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7665.773783,
                "variance": 58764087.69
              },
              {
                "average": 1.001213746,
                "count": 814833,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03509857401,
                "variance": 0.001231909897
              },
              {
                "average": 1.002415219,
                "count": 814833,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04968195193,
                "variance": 0.002468296347
              },
              {
                "average": 0.5064166522,
                "count": 814833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999591317,
                "variance": 0.2499591333
              },
              {
                "average": 0.0007351199571,
                "count": 814833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02710314479,
                "variance": 0.0007345804573
              },
              {
                "average": 8.306794153,
                "count": 814833,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.924010912,
                "variance": 3.701817991
              },
              {
                "average": -1.733190555,
                "count": 814833,
                "maximum": 16.27799988,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.556696256,
                "variance": 57.10365831
              },
              {
                "average": 0.4814704363,
                "count": 814833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996568439,
                "variance": 0.2496569617
              },
              {
                "average": 161.5769415,
                "count": 814833,
                "maximum": 210,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.99188787,
                "variance": 528.6269077
              },
              {
                "average": 216160809.8,
                "count": 814833,
                "maximum": 216161093.6,
                "minimum": 216158278,
                "name": "GpsTime",
                "position": 12,
                "stddev": 172.0908402,
                "variance": 29615.25727
              },
              {
                "average": 0.4814704363,
                "count": 814833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996568439,
                "variance": 0.2496569617
              },
              {
                "average": 0,
                "count": 814833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 814833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 814833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03414810151,
                "count": 814833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1816096064,
                "variance": 0.03298204915
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              400192.4068,
              2269589.908,
              1.418840628,
              400446.0068,
              2270062.848,
              10.15884063
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    400192.4068353674,
                    2269589.9077196033,
                    1.418840628386733
                  ],
                  [
                    400192.4068353674,
                    2270062.8477196037,
                    1.418840628386733
                  ],
                  [
                    400446.00683536736,
                    2270062.8477196037,
                    10.158840628386734
                  ],
                  [
                    400446.00683536736,
                    2269589.9077196033,
                    10.158840628386734
                  ],
                  [
                    400192.4068353674,
                    2269589.9077196033,
                    1.418840628386733
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:31:33+00:00",
            "end_time": "2018-07-20T21:44:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_063.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.61118245992387,
              70.11760958607742,
              -1.953310024558755
            ],
            [
              -143.6090625801114,
              70.12234651841044,
              -1.953310024558755
            ],
            [
              -143.5961444039442,
              70.12162782887648,
              25.78668997544125
            ],
            [
              -143.59826683249835,
              70.11689106032551,
              25.78668997544125
            ],
            [
              -143.61118245992387,
              70.11760958607742,
              -1.953310024558755
            ]
          ]
        ]
      },
      "bbox": [
        -143.6111825,
        70.11689106,
        -1.953310025,
        -143.5961444,
        70.12234652,
        25.78668998
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:34Z",
        "pc:count": 4984522,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400053.7129,
            "count": 4984522,
            "maximum": 400322.0932,
            "minimum": 399816.8132,
            "name": "X",
            "position": 0,
            "stddev": 120.6390699,
            "variance": 14553.78518
          },
          {
            "average": 2269313.377,
            "count": 4984522,
            "maximum": 2269589.491,
            "minimum": 2269063.791,
            "name": "Y",
            "position": 1,
            "stddev": 127.682943,
            "variance": 16302.93394
          },
          {
            "average": 8.368492622,
            "count": 4984522,
            "maximum": 25.78668998,
            "minimum": -1.953310025,
            "name": "Z",
            "position": 2,
            "stddev": 3.091207014,
            "variance": 9.555560801
          },
          {
            "average": 28013.01949,
            "count": 4984522,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9363.312551,
            "variance": 87671621.93
          },
          {
            "average": 1.0021322,
            "count": 4984522,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0469797886,
            "variance": 0.002207100537
          },
          {
            "average": 1.004266407,
            "count": 4984522,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06698166584,
            "variance": 0.004486543559
          },
          {
            "average": 0.4963960436,
            "count": 4984522,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999870615,
            "variance": 0.2499870617
          },
          {
            "average": 0.0004921234173,
            "count": 4984522,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02217839783,
            "variance": 0.0004918813305
          },
          {
            "average": 2.081546636,
            "count": 4984522,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.428354871,
            "variance": 5.896907377
          },
          {
            "average": 2.782996137,
            "count": 4984522,
            "maximum": 16.30200005,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.130153599,
            "variance": 83.35970475
          },
          {
            "average": 0.508750488,
            "count": 4984522,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999234732,
            "variance": 0.2499234791
          },
          {
            "average": 168.4612823,
            "count": 4984522,
            "maximum": 210,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.6270976,
            "variance": 558.2397411
          },
          {
            "average": 216160695.5,
            "count": 4984522,
            "maximum": 216162114.7,
            "minimum": 216158274.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1152.976958,
            "variance": 1329355.866
          },
          {
            "average": 0.508750488,
            "count": 4984522,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999234732,
            "variance": 0.2499234791
          },
          {
            "average": 0,
            "count": 4984522,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4984522,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4984522,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1863829671,
            "count": 4984522,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3894154428,
            "variance": 0.1516443871
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399816.8132,
          2269063.791,
          -1.953310025,
          400322.0932,
          2269589.491,
          25.78668998
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399816.81322546693,
                2269063.790642188,
                -1.953310024558755
              ],
              [
                399816.81322546693,
                2269589.490642188,
                -1.953310024558755
              ],
              [
                400322.09322546696,
                2269589.490642188,
                25.78668997544125
              ],
              [
                400322.09322546696,
                2269063.790642188,
                25.78668997544125
              ],
              [
                399816.81322546693,
                2269063.790642188,
                -1.953310024558755
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:34+00:00",
        "end_time": "2018-07-20T21:44:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_063.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_063.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_063.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_063.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6111825,
            70.11689106,
            -1.953310025,
            -143.5961444,
            70.12234652,
            25.78668998
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.61118245992387,
                  70.11760958607742,
                  -1.953310024558755
                ],
                [
                  -143.6090625801114,
                  70.12234651841044,
                  -1.953310024558755
                ],
                [
                  -143.5961444039442,
                  70.12162782887648,
                  25.78668997544125
                ],
                [
                  -143.59826683249835,
                  70.11689106032551,
                  25.78668997544125
                ],
                [
                  -143.61118245992387,
                  70.11760958607742,
                  -1.953310024558755
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_063.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_063.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:34Z",
            "pc:count": 4984522,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400053.7129,
                "count": 4984522,
                "maximum": 400322.0932,
                "minimum": 399816.8132,
                "name": "X",
                "position": 0,
                "stddev": 120.6390699,
                "variance": 14553.78518
              },
              {
                "average": 2269313.377,
                "count": 4984522,
                "maximum": 2269589.491,
                "minimum": 2269063.791,
                "name": "Y",
                "position": 1,
                "stddev": 127.682943,
                "variance": 16302.93394
              },
              {
                "average": 8.368492622,
                "count": 4984522,
                "maximum": 25.78668998,
                "minimum": -1.953310025,
                "name": "Z",
                "position": 2,
                "stddev": 3.091207014,
                "variance": 9.555560801
              },
              {
                "average": 28013.01949,
                "count": 4984522,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9363.312551,
                "variance": 87671621.93
              },
              {
                "average": 1.0021322,
                "count": 4984522,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0469797886,
                "variance": 0.002207100537
              },
              {
                "average": 1.004266407,
                "count": 4984522,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06698166584,
                "variance": 0.004486543559
              },
              {
                "average": 0.4963960436,
                "count": 4984522,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999870615,
                "variance": 0.2499870617
              },
              {
                "average": 0.0004921234173,
                "count": 4984522,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02217839783,
                "variance": 0.0004918813305
              },
              {
                "average": 2.081546636,
                "count": 4984522,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.428354871,
                "variance": 5.896907377
              },
              {
                "average": 2.782996137,
                "count": 4984522,
                "maximum": 16.30200005,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.130153599,
                "variance": 83.35970475
              },
              {
                "average": 0.508750488,
                "count": 4984522,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999234732,
                "variance": 0.2499234791
              },
              {
                "average": 168.4612823,
                "count": 4984522,
                "maximum": 210,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.6270976,
                "variance": 558.2397411
              },
              {
                "average": 216160695.5,
                "count": 4984522,
                "maximum": 216162114.7,
                "minimum": 216158274.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1152.976958,
                "variance": 1329355.866
              },
              {
                "average": 0.508750488,
                "count": 4984522,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999234732,
                "variance": 0.2499234791
              },
              {
                "average": 0,
                "count": 4984522,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4984522,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4984522,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1863829671,
                "count": 4984522,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3894154428,
                "variance": 0.1516443871
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399816.8132,
              2269063.791,
              -1.953310025,
              400322.0932,
              2269589.491,
              25.78668998
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399816.81322546693,
                    2269063.790642188,
                    -1.953310024558755
                  ],
                  [
                    399816.81322546693,
                    2269589.490642188,
                    -1.953310024558755
                  ],
                  [
                    400322.09322546696,
                    2269589.490642188,
                    25.78668997544125
                  ],
                  [
                    400322.09322546696,
                    2269063.790642188,
                    25.78668997544125
                  ],
                  [
                    399816.81322546693,
                    2269063.790642188,
                    -1.953310024558755
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:34+00:00",
            "end_time": "2018-07-20T21:44:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_050.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.6229005001978,
              70.11340394922185,
              1.526807823153815
            ],
            [
              -143.62078280848218,
              70.11814216740842,
              1.526807823153815
            ],
            [
              -143.60705884409097,
              70.11737937313492,
              22.886807823153816
            ],
            [
              -143.60917924398728,
              70.11264132878809,
              22.886807823153816
            ],
            [
              -143.6229005001978,
              70.11340394922185,
              1.526807823153815
            ]
          ]
        ]
      },
      "bbox": [
        -143.6229005,
        70.11264133,
        1.526807823,
        -143.6070588,
        70.11814217,
        22.88680782
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:27Z",
        "pc:count": 6114387,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399701.6021,
            "count": 6114387,
            "maximum": 399978.1478,
            "minimum": 399441.2678,
            "name": "X",
            "position": 0,
            "stddev": 135.1664984,
            "variance": 18269.9823
          },
          {
            "average": 2268804.391,
            "count": 6114387,
            "maximum": 2269063.692,
            "minimum": 2268537.852,
            "name": "Y",
            "position": 1,
            "stddev": 129.8762023,
            "variance": 16867.82792
          },
          {
            "average": 10.58629767,
            "count": 6114387,
            "maximum": 22.88680782,
            "minimum": 1.526807823,
            "name": "Z",
            "position": 2,
            "stddev": 0.961068327,
            "variance": 0.9236523292
          },
          {
            "average": 29556.53042,
            "count": 6114387,
            "maximum": 65535,
            "minimum": 826,
            "name": "Intensity",
            "position": 3,
            "stddev": 7596.812902,
            "variance": 57711566.27
          },
          {
            "average": 1.000382867,
            "count": 6114387,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01972974691,
            "variance": 0.0003892629133
          },
          {
            "average": 1.000770478,
            "count": 6114387,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02809822462,
            "variance": 0.000789510227
          },
          {
            "average": 0.5073834875,
            "count": 6114387,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499945522,
            "variance": 0.249945525
          },
          {
            "average": 0.0005562291036,
            "count": 6114387,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02357795164,
            "variance": 0.0005559198037
          },
          {
            "average": 1.223391977,
            "count": 6114387,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4298415207,
            "variance": 0.1847637329
          },
          {
            "average": -3.127658358,
            "count": 6114387,
            "maximum": 16.40399933,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.534444519,
            "variance": 90.90563228
          },
          {
            "average": 0.5011957863,
            "count": 6114387,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499998611,
            "variance": 0.249998611
          },
          {
            "average": 171.4541319,
            "count": 6114387,
            "maximum": 210,
            "minimum": 152,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.68252838,
            "variance": 560.8621505
          },
          {
            "average": 216160807.1,
            "count": 6114387,
            "maximum": 216162107.7,
            "minimum": 216158275.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1221.488214,
            "variance": 1492033.457
          },
          {
            "average": 0.5011957863,
            "count": 6114387,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499998611,
            "variance": 0.249998611
          },
          {
            "average": 0,
            "count": 6114387,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6114387,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6114387,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.213770571,
            "count": 6114387,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4099667565,
            "variance": 0.1680727414
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399441.2678,
          2268537.852,
          1.526807823,
          399978.1478,
          2269063.692,
          22.88680782
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399441.26780675555,
                2268537.8523713527,
                1.526807823153815
              ],
              [
                399441.26780675555,
                2269063.6923713526,
                1.526807823153815
              ],
              [
                399978.14780675556,
                2269063.6923713526,
                22.886807823153816
              ],
              [
                399978.14780675556,
                2268537.8523713527,
                22.886807823153816
              ],
              [
                399441.26780675555,
                2268537.8523713527,
                1.526807823153815
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:27+00:00",
        "end_time": "2018-07-20T21:44:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_050.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_050.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_050.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_050.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6229005,
            70.11264133,
            1.526807823,
            -143.6070588,
            70.11814217,
            22.88680782
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.6229005001978,
                  70.11340394922185,
                  1.526807823153815
                ],
                [
                  -143.62078280848218,
                  70.11814216740842,
                  1.526807823153815
                ],
                [
                  -143.60705884409097,
                  70.11737937313492,
                  22.886807823153816
                ],
                [
                  -143.60917924398728,
                  70.11264132878809,
                  22.886807823153816
                ],
                [
                  -143.6229005001978,
                  70.11340394922185,
                  1.526807823153815
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_050.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_050.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:27Z",
            "pc:count": 6114387,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399701.6021,
                "count": 6114387,
                "maximum": 399978.1478,
                "minimum": 399441.2678,
                "name": "X",
                "position": 0,
                "stddev": 135.1664984,
                "variance": 18269.9823
              },
              {
                "average": 2268804.391,
                "count": 6114387,
                "maximum": 2269063.692,
                "minimum": 2268537.852,
                "name": "Y",
                "position": 1,
                "stddev": 129.8762023,
                "variance": 16867.82792
              },
              {
                "average": 10.58629767,
                "count": 6114387,
                "maximum": 22.88680782,
                "minimum": 1.526807823,
                "name": "Z",
                "position": 2,
                "stddev": 0.961068327,
                "variance": 0.9236523292
              },
              {
                "average": 29556.53042,
                "count": 6114387,
                "maximum": 65535,
                "minimum": 826,
                "name": "Intensity",
                "position": 3,
                "stddev": 7596.812902,
                "variance": 57711566.27
              },
              {
                "average": 1.000382867,
                "count": 6114387,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01972974691,
                "variance": 0.0003892629133
              },
              {
                "average": 1.000770478,
                "count": 6114387,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02809822462,
                "variance": 0.000789510227
              },
              {
                "average": 0.5073834875,
                "count": 6114387,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499945522,
                "variance": 0.249945525
              },
              {
                "average": 0.0005562291036,
                "count": 6114387,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02357795164,
                "variance": 0.0005559198037
              },
              {
                "average": 1.223391977,
                "count": 6114387,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4298415207,
                "variance": 0.1847637329
              },
              {
                "average": -3.127658358,
                "count": 6114387,
                "maximum": 16.40399933,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.534444519,
                "variance": 90.90563228
              },
              {
                "average": 0.5011957863,
                "count": 6114387,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499998611,
                "variance": 0.249998611
              },
              {
                "average": 171.4541319,
                "count": 6114387,
                "maximum": 210,
                "minimum": 152,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.68252838,
                "variance": 560.8621505
              },
              {
                "average": 216160807.1,
                "count": 6114387,
                "maximum": 216162107.7,
                "minimum": 216158275.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1221.488214,
                "variance": 1492033.457
              },
              {
                "average": 0.5011957863,
                "count": 6114387,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499998611,
                "variance": 0.249998611
              },
              {
                "average": 0,
                "count": 6114387,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6114387,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6114387,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.213770571,
                "count": 6114387,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4099667565,
                "variance": 0.1680727414
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399441.2678,
              2268537.852,
              1.526807823,
              399978.1478,
              2269063.692,
              22.88680782
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399441.26780675555,
                    2268537.8523713527,
                    1.526807823153815
                  ],
                  [
                    399441.26780675555,
                    2269063.6923713526,
                    1.526807823153815
                  ],
                  [
                    399978.14780675556,
                    2269063.6923713526,
                    22.886807823153816
                  ],
                  [
                    399978.14780675556,
                    2268537.8523713527,
                    22.886807823153816
                  ],
                  [
                    399441.26780675555,
                    2268537.8523713527,
                    1.526807823153815
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:27+00:00",
            "end_time": "2018-07-20T21:44:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_064.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.59840071295218,
              70.11938323788846,
              1.416357603008259
            ],
            [
              -143.59723650345487,
              70.12198150126325,
              1.416357603008259
            ],
            [
              -143.5926556305013,
              70.12172645701064,
              1.736357603008259
            ],
            [
              -143.59382033576895,
              70.1191282255201,
              1.736357603008259
            ],
            [
              -143.59840071295218,
              70.11938323788846,
              1.416357603008259
            ]
          ]
        ]
      },
      "bbox": [
        -143.5984007,
        70.11912823,
        1.416357603,
        -143.5926556,
        70.1219815,
        1.736357603
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:36Z",
        "pc:count": 382297,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400357.7148,
            "count": 382297,
            "maximum": 400453.5472,
            "minimum": 400274.3672,
            "name": "X",
            "position": 0,
            "stddev": 42.07230804,
            "variance": 1770.079104
          },
          {
            "average": 2269510.343,
            "count": 382297,
            "maximum": 2269621.204,
            "minimum": 2269332.844,
            "name": "Y",
            "position": 1,
            "stddev": 64.91929281,
            "variance": 4214.514579
          },
          {
            "average": 1.580323185,
            "count": 382297,
            "maximum": 1.736357603,
            "minimum": 1.416357603,
            "name": "Z",
            "position": 2,
            "stddev": 0.02894910212,
            "variance": 0.0008380505135
          },
          {
            "average": 12201.61557,
            "count": 382297,
            "maximum": 65535,
            "minimum": 826,
            "name": "Intensity",
            "position": 3,
            "stddev": 10389.11824,
            "variance": 107933777.8
          },
          {
            "average": 1,
            "count": 382297,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 382297,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5068781602,
            "count": 382297,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999533426,
            "variance": 0.2499533447
          },
          {
            "average": 0.000860587449,
            "count": 382297,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02932318345,
            "variance": 0.0008598490874
          },
          {
            "average": 8.545499965,
            "count": 382297,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.525867389,
            "variance": 2.328271289
          },
          {
            "average": -2.528448013,
            "count": 382297,
            "maximum": 16.20599937,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.32434579,
            "variance": 39.99734968
          },
          {
            "average": 0.4843302459,
            "count": 382297,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997550521,
            "variance": 0.2497551121
          },
          {
            "average": 169.3060945,
            "count": 382297,
            "maximum": 210,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 27.1309269,
            "variance": 736.0871946
          },
          {
            "average": 216160697.1,
            "count": 382297,
            "maximum": 216162116,
            "minimum": 216158275.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 507.9799552,
            "variance": 258043.6349
          },
          {
            "average": 0.4843302459,
            "count": 382297,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997550521,
            "variance": 0.2497551121
          },
          {
            "average": 0,
            "count": 382297,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 382297,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 382297,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02840723312,
            "count": 382297,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1661334837,
            "variance": 0.02760033442
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          400274.3672,
          2269332.844,
          1.416357603,
          400453.5472,
          2269621.204,
          1.736357603
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                400274.3671516339,
                2269332.8436521613,
                1.416357603008259
              ],
              [
                400274.3671516339,
                2269621.2036521616,
                1.416357603008259
              ],
              [
                400453.54715163395,
                2269621.2036521616,
                1.736357603008259
              ],
              [
                400453.54715163395,
                2269332.8436521613,
                1.736357603008259
              ],
              [
                400274.3671516339,
                2269332.8436521613,
                1.416357603008259
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:36+00:00",
        "end_time": "2018-07-20T21:44:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_064.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_064.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_064.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_064.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.5984007,
            70.11912823,
            1.416357603,
            -143.5926556,
            70.1219815,
            1.736357603
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.59840071295218,
                  70.11938323788846,
                  1.416357603008259
                ],
                [
                  -143.59723650345487,
                  70.12198150126325,
                  1.416357603008259
                ],
                [
                  -143.5926556305013,
                  70.12172645701064,
                  1.736357603008259
                ],
                [
                  -143.59382033576895,
                  70.1191282255201,
                  1.736357603008259
                ],
                [
                  -143.59840071295218,
                  70.11938323788846,
                  1.416357603008259
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_064.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_064.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:36Z",
            "pc:count": 382297,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400357.7148,
                "count": 382297,
                "maximum": 400453.5472,
                "minimum": 400274.3672,
                "name": "X",
                "position": 0,
                "stddev": 42.07230804,
                "variance": 1770.079104
              },
              {
                "average": 2269510.343,
                "count": 382297,
                "maximum": 2269621.204,
                "minimum": 2269332.844,
                "name": "Y",
                "position": 1,
                "stddev": 64.91929281,
                "variance": 4214.514579
              },
              {
                "average": 1.580323185,
                "count": 382297,
                "maximum": 1.736357603,
                "minimum": 1.416357603,
                "name": "Z",
                "position": 2,
                "stddev": 0.02894910212,
                "variance": 0.0008380505135
              },
              {
                "average": 12201.61557,
                "count": 382297,
                "maximum": 65535,
                "minimum": 826,
                "name": "Intensity",
                "position": 3,
                "stddev": 10389.11824,
                "variance": 107933777.8
              },
              {
                "average": 1,
                "count": 382297,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 382297,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5068781602,
                "count": 382297,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999533426,
                "variance": 0.2499533447
              },
              {
                "average": 0.000860587449,
                "count": 382297,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02932318345,
                "variance": 0.0008598490874
              },
              {
                "average": 8.545499965,
                "count": 382297,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.525867389,
                "variance": 2.328271289
              },
              {
                "average": -2.528448013,
                "count": 382297,
                "maximum": 16.20599937,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.32434579,
                "variance": 39.99734968
              },
              {
                "average": 0.4843302459,
                "count": 382297,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997550521,
                "variance": 0.2497551121
              },
              {
                "average": 169.3060945,
                "count": 382297,
                "maximum": 210,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 27.1309269,
                "variance": 736.0871946
              },
              {
                "average": 216160697.1,
                "count": 382297,
                "maximum": 216162116,
                "minimum": 216158275.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 507.9799552,
                "variance": 258043.6349
              },
              {
                "average": 0.4843302459,
                "count": 382297,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997550521,
                "variance": 0.2497551121
              },
              {
                "average": 0,
                "count": 382297,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 382297,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 382297,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02840723312,
                "count": 382297,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1661334837,
                "variance": 0.02760033442
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              400274.3672,
              2269332.844,
              1.416357603,
              400453.5472,
              2269621.204,
              1.736357603
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    400274.3671516339,
                    2269332.8436521613,
                    1.416357603008259
                  ],
                  [
                    400274.3671516339,
                    2269621.2036521616,
                    1.416357603008259
                  ],
                  [
                    400453.54715163395,
                    2269621.2036521616,
                    1.736357603008259
                  ],
                  [
                    400453.54715163395,
                    2269332.8436521613,
                    1.736357603008259
                  ],
                  [
                    400274.3671516339,
                    2269332.8436521613,
                    1.416357603008259
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:36+00:00",
            "end_time": "2018-07-20T21:44:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_100.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.63622702025515,
              70.12968332653384,
              -9.91506840892982
            ],
            [
              -143.63411160087273,
              70.1344197678796,
              -9.91506840892982
            ],
            [
              -143.6203065401023,
              70.13365392947654,
              26.064931591070184
            ],
            [
              -143.62242468448196,
              70.12891766275473,
              26.064931591070184
            ],
            [
              -143.63622702025515,
              70.12968332653384,
              -9.91506840892982
            ]
          ]
        ]
      },
      "bbox": [
        -143.636227,
        70.12891766,
        -9.915068409,
        -143.6203065,
        70.13441977,
        26.06493159
      ],
      "properties": {
        "datetime": "2018-07-20T22:45:00Z",
        "pc:count": 4560365,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 398927.4875,
            "count": 4560365,
            "maximum": 399194.7645,
            "minimum": 398655.1045,
            "name": "X",
            "position": 0,
            "stddev": 131.00954,
            "variance": 17163.49957
          },
          {
            "average": 2270482.452,
            "count": 4560365,
            "maximum": 2270746.231,
            "minimum": 2270220.651,
            "name": "Y",
            "position": 1,
            "stddev": 129.2817389,
            "variance": 16713.76802
          },
          {
            "average": 9.838160499,
            "count": 4560365,
            "maximum": 26.06493159,
            "minimum": -9.915068409,
            "name": "Z",
            "position": 2,
            "stddev": 2.585947779,
            "variance": 6.687125917
          },
          {
            "average": 27340.62911,
            "count": 4560365,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9406.808414,
            "variance": 88488044.54
          },
          {
            "average": 1.002880471,
            "count": 4560365,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0539393403,
            "variance": 0.002909452432
          },
          {
            "average": 1.005763135,
            "count": 4560365,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0764313803,
            "variance": 0.005841755895
          },
          {
            "average": 0.4958559238,
            "count": 4560365,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999828812,
            "variance": 0.2499828814
          },
          {
            "average": 0.0005153096298,
            "count": 4560365,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02269458523,
            "variance": 0.0005150441987
          },
          {
            "average": 1.50718221,
            "count": 4560365,
            "maximum": 21,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.045639286,
            "variance": 4.184640087
          },
          {
            "average": 3.01045823,
            "count": 4560365,
            "maximum": 16.33799934,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.028051,
            "variance": 100.5618069
          },
          {
            "average": 0.4957315917,
            "count": 4560365,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999818352,
            "variance": 0.2499818355
          },
          {
            "average": 170.3293844,
            "count": 4560365,
            "maximum": 201,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.01297438,
            "variance": 441.5450921
          },
          {
            "average": 216160592,
            "count": 4560365,
            "maximum": 216161900.6,
            "minimum": 216158298.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1544.147399,
            "variance": 2384391.19
          },
          {
            "average": 0.4957315917,
            "count": 4560365,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999818352,
            "variance": 0.2499818355
          },
          {
            "average": 0,
            "count": 4560365,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4560365,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4560365,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2170339436,
            "count": 4560365,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4122259674,
            "variance": 0.1699302482
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398655.1045,
          2270220.651,
          -9.915068409,
          399194.7645,
          2270746.231,
          26.06493159
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398655.1044760282,
                2270220.6514867824,
                -9.91506840892982
              ],
              [
                398655.1044760282,
                2270746.2314867824,
                -9.91506840892982
              ],
              [
                399194.7644760282,
                2270746.2314867824,
                26.064931591070184
              ],
              [
                399194.7644760282,
                2270220.6514867824,
                26.064931591070184
              ],
              [
                398655.1044760282,
                2270220.6514867824,
                -9.91506840892982
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:45:00+00:00",
        "end_time": "2018-07-20T21:44:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_100.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_100.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_100.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_100.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.636227,
            70.12891766,
            -9.915068409,
            -143.6203065,
            70.13441977,
            26.06493159
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.63622702025515,
                  70.12968332653384,
                  -9.91506840892982
                ],
                [
                  -143.63411160087273,
                  70.1344197678796,
                  -9.91506840892982
                ],
                [
                  -143.6203065401023,
                  70.13365392947654,
                  26.064931591070184
                ],
                [
                  -143.62242468448196,
                  70.12891766275473,
                  26.064931591070184
                ],
                [
                  -143.63622702025515,
                  70.12968332653384,
                  -9.91506840892982
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_100.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_100.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:45:00Z",
            "pc:count": 4560365,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 398927.4875,
                "count": 4560365,
                "maximum": 399194.7645,
                "minimum": 398655.1045,
                "name": "X",
                "position": 0,
                "stddev": 131.00954,
                "variance": 17163.49957
              },
              {
                "average": 2270482.452,
                "count": 4560365,
                "maximum": 2270746.231,
                "minimum": 2270220.651,
                "name": "Y",
                "position": 1,
                "stddev": 129.2817389,
                "variance": 16713.76802
              },
              {
                "average": 9.838160499,
                "count": 4560365,
                "maximum": 26.06493159,
                "minimum": -9.915068409,
                "name": "Z",
                "position": 2,
                "stddev": 2.585947779,
                "variance": 6.687125917
              },
              {
                "average": 27340.62911,
                "count": 4560365,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9406.808414,
                "variance": 88488044.54
              },
              {
                "average": 1.002880471,
                "count": 4560365,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0539393403,
                "variance": 0.002909452432
              },
              {
                "average": 1.005763135,
                "count": 4560365,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0764313803,
                "variance": 0.005841755895
              },
              {
                "average": 0.4958559238,
                "count": 4560365,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999828812,
                "variance": 0.2499828814
              },
              {
                "average": 0.0005153096298,
                "count": 4560365,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02269458523,
                "variance": 0.0005150441987
              },
              {
                "average": 1.50718221,
                "count": 4560365,
                "maximum": 21,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.045639286,
                "variance": 4.184640087
              },
              {
                "average": 3.01045823,
                "count": 4560365,
                "maximum": 16.33799934,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.028051,
                "variance": 100.5618069
              },
              {
                "average": 0.4957315917,
                "count": 4560365,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999818352,
                "variance": 0.2499818355
              },
              {
                "average": 170.3293844,
                "count": 4560365,
                "maximum": 201,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.01297438,
                "variance": 441.5450921
              },
              {
                "average": 216160592,
                "count": 4560365,
                "maximum": 216161900.6,
                "minimum": 216158298.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1544.147399,
                "variance": 2384391.19
              },
              {
                "average": 0.4957315917,
                "count": 4560365,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999818352,
                "variance": 0.2499818355
              },
              {
                "average": 0,
                "count": 4560365,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4560365,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4560365,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2170339436,
                "count": 4560365,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4122259674,
                "variance": 0.1699302482
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398655.1045,
              2270220.651,
              -9.915068409,
              399194.7645,
              2270746.231,
              26.06493159
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398655.1044760282,
                    2270220.6514867824,
                    -9.91506840892982
                  ],
                  [
                    398655.1044760282,
                    2270746.2314867824,
                    -9.91506840892982
                  ],
                  [
                    399194.7644760282,
                    2270746.2314867824,
                    26.064931591070184
                  ],
                  [
                    399194.7644760282,
                    2270220.6514867824,
                    26.064931591070184
                  ],
                  [
                    398655.1044760282,
                    2270220.6514867824,
                    -9.91506840892982
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:45:00+00:00",
            "end_time": "2018-07-20T21:44:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_087.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.63590560250768,
              70.12558523693667,
              2.47995066820641
            ],
            [
              -143.63378976403857,
              70.13032319185365,
              2.47995066820641
            ],
            [
              -143.61998815367699,
              70.12955740374106,
              64.8799506682064
            ],
            [
              -143.62210671691167,
              70.12481962345306,
              64.8799506682064
            ],
            [
              -143.63590560250768,
              70.12558523693667,
              2.47995066820641
            ]
          ]
        ]
      },
      "bbox": [
        -143.6359056,
        70.12481962,
        2.479950668,
        -143.6199882,
        70.13032319,
        64.87995067
      ],
      "properties": {
        "datetime": "2018-07-20T22:44:53Z",
        "pc:count": 4218436,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399022.7866,
            "count": 4218436,
            "maximum": 399276.81,
            "minimum": 398737.19,
            "name": "X",
            "position": 0,
            "stddev": 134.6081082,
            "variance": 18119.34278
          },
          {
            "average": 2270043.689,
            "count": 4218436,
            "maximum": 2270304.571,
            "minimum": 2269778.811,
            "name": "Y",
            "position": 1,
            "stddev": 133.8707951,
            "variance": 17921.38978
          },
          {
            "average": 13.32291887,
            "count": 4218436,
            "maximum": 64.87995067,
            "minimum": 2.479950668,
            "name": "Z",
            "position": 2,
            "stddev": 1.366936294,
            "variance": 1.868514833
          },
          {
            "average": 28035.52569,
            "count": 4218436,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9767.72298,
            "variance": 95408412.21
          },
          {
            "average": 1.002211246,
            "count": 4218436,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04713812247,
            "variance": 0.00222200259
          },
          {
            "average": 1.00442747,
            "count": 4218436,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06674433059,
            "variance": 0.004454805666
          },
          {
            "average": 0.4987557,
            "count": 4218436,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998511,
            "variance": 0.249998511
          },
          {
            "average": 0.0005027929783,
            "count": 4218436,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02241741057,
            "variance": 0.0005025402966
          },
          {
            "average": 2.960063161,
            "count": 4218436,
            "maximum": 21,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 5.117875149,
            "variance": 26.19264604
          },
          {
            "average": 1.367253292,
            "count": 4218436,
            "maximum": 16.33799934,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.01985771,
            "variance": 100.3975486
          },
          {
            "average": 0.48791756,
            "count": 4218436,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998540526,
            "variance": 0.2498540739
          },
          {
            "average": 168.5560397,
            "count": 4218436,
            "maximum": 202,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.39996954,
            "variance": 416.1587573
          },
          {
            "average": 216160735.8,
            "count": 4218436,
            "maximum": 216161893.1,
            "minimum": 216158293.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1460.777731,
            "variance": 2133871.579
          },
          {
            "average": 0.48791756,
            "count": 4218436,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998540526,
            "variance": 0.2498540739
          },
          {
            "average": 0,
            "count": 4218436,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4218436,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4218436,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2048394239,
            "count": 4218436,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4035842823,
            "variance": 0.1628802729
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398737.19,
          2269778.811,
          2.479950668,
          399276.81,
          2270304.571,
          64.87995067
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398737.1899870043,
                2269778.811464305,
                2.47995066820641
              ],
              [
                398737.1899870043,
                2270304.571464305,
                2.47995066820641
              ],
              [
                399276.8099870043,
                2270304.571464305,
                64.8799506682064
              ],
              [
                399276.8099870043,
                2269778.811464305,
                64.8799506682064
              ],
              [
                398737.1899870043,
                2269778.811464305,
                2.47995066820641
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:44:53+00:00",
        "end_time": "2018-07-20T21:44:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_087.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_087.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_087.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_087.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6359056,
            70.12481962,
            2.479950668,
            -143.6199882,
            70.13032319,
            64.87995067
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.63590560250768,
                  70.12558523693667,
                  2.47995066820641
                ],
                [
                  -143.63378976403857,
                  70.13032319185365,
                  2.47995066820641
                ],
                [
                  -143.61998815367699,
                  70.12955740374106,
                  64.8799506682064
                ],
                [
                  -143.62210671691167,
                  70.12481962345306,
                  64.8799506682064
                ],
                [
                  -143.63590560250768,
                  70.12558523693667,
                  2.47995066820641
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_087.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_087.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:44:53Z",
            "pc:count": 4218436,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399022.7866,
                "count": 4218436,
                "maximum": 399276.81,
                "minimum": 398737.19,
                "name": "X",
                "position": 0,
                "stddev": 134.6081082,
                "variance": 18119.34278
              },
              {
                "average": 2270043.689,
                "count": 4218436,
                "maximum": 2270304.571,
                "minimum": 2269778.811,
                "name": "Y",
                "position": 1,
                "stddev": 133.8707951,
                "variance": 17921.38978
              },
              {
                "average": 13.32291887,
                "count": 4218436,
                "maximum": 64.87995067,
                "minimum": 2.479950668,
                "name": "Z",
                "position": 2,
                "stddev": 1.366936294,
                "variance": 1.868514833
              },
              {
                "average": 28035.52569,
                "count": 4218436,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9767.72298,
                "variance": 95408412.21
              },
              {
                "average": 1.002211246,
                "count": 4218436,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04713812247,
                "variance": 0.00222200259
              },
              {
                "average": 1.00442747,
                "count": 4218436,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06674433059,
                "variance": 0.004454805666
              },
              {
                "average": 0.4987557,
                "count": 4218436,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998511,
                "variance": 0.249998511
              },
              {
                "average": 0.0005027929783,
                "count": 4218436,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02241741057,
                "variance": 0.0005025402966
              },
              {
                "average": 2.960063161,
                "count": 4218436,
                "maximum": 21,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 5.117875149,
                "variance": 26.19264604
              },
              {
                "average": 1.367253292,
                "count": 4218436,
                "maximum": 16.33799934,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.01985771,
                "variance": 100.3975486
              },
              {
                "average": 0.48791756,
                "count": 4218436,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998540526,
                "variance": 0.2498540739
              },
              {
                "average": 168.5560397,
                "count": 4218436,
                "maximum": 202,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.39996954,
                "variance": 416.1587573
              },
              {
                "average": 216160735.8,
                "count": 4218436,
                "maximum": 216161893.1,
                "minimum": 216158293.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1460.777731,
                "variance": 2133871.579
              },
              {
                "average": 0.48791756,
                "count": 4218436,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998540526,
                "variance": 0.2498540739
              },
              {
                "average": 0,
                "count": 4218436,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4218436,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4218436,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2048394239,
                "count": 4218436,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4035842823,
                "variance": 0.1628802729
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398737.19,
              2269778.811,
              2.479950668,
              399276.81,
              2270304.571,
              64.87995067
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398737.1899870043,
                    2269778.811464305,
                    2.47995066820641
                  ],
                  [
                    398737.1899870043,
                    2270304.571464305,
                    2.47995066820641
                  ],
                  [
                    399276.8099870043,
                    2270304.571464305,
                    64.8799506682064
                  ],
                  [
                    399276.8099870043,
                    2269778.811464305,
                    64.8799506682064
                  ],
                  [
                    398737.1899870043,
                    2269778.811464305,
                    2.47995066820641
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:44:53+00:00",
            "end_time": "2018-07-20T21:44:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_051.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.61085948295153,
              70.11352778870145,
              -2.92414276986306
            ],
            [
              -143.6088004786312,
              70.11812927393069,
              -2.92414276986306
            ],
            [
              -143.59896935753395,
              70.1175823137373,
              70.09585723013694
            ],
            [
              -143.60103024580002,
              70.11298094956449,
              70.09585723013694
            ],
            [
              -143.61085948295153,
              70.11352778870145,
              -2.92414276986306
            ]
          ]
        ]
      },
      "bbox": [
        -143.6108595,
        70.11298095,
        -2.92414277,
        -143.5989694,
        70.11812927,
        70.09585723
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:33Z",
        "pc:count": 2890456,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 400059.9278,
            "count": 2890456,
            "maximum": 400283.4575,
            "minimum": 399898.8575,
            "name": "X",
            "position": 0,
            "stddev": 88.12799601,
            "variance": 7766.543681
          },
          {
            "average": 2268935.534,
            "count": 2890456,
            "maximum": 2269134.407,
            "minimum": 2268623.727,
            "name": "Y",
            "position": 1,
            "stddev": 109.3108682,
            "variance": 11948.8659
          },
          {
            "average": 7.871311363,
            "count": 2890456,
            "maximum": 70.09585723,
            "minimum": -2.92414277,
            "name": "Z",
            "position": 2,
            "stddev": 3.105229768,
            "variance": 9.642451909
          },
          {
            "average": 26387.31597,
            "count": 2890456,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9304.936855,
            "variance": 86581849.87
          },
          {
            "average": 1.001336813,
            "count": 2890456,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03700842219,
            "variance": 0.001369623313
          },
          {
            "average": 1.00266394,
            "count": 2890456,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05254173354,
            "variance": 0.002760633764
          },
          {
            "average": 0.5017969483,
            "count": 2890456,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999968575,
            "variance": 0.2499968575
          },
          {
            "average": 0.0006172036523,
            "count": 2890456,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02483592006,
            "variance": 0.0006168229253
          },
          {
            "average": 2.252283377,
            "count": 2890456,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.67273101,
            "variance": 7.143491052
          },
          {
            "average": 0.7360458737,
            "count": 2890456,
            "maximum": 16.43400002,
            "minimum": -15.72599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.0679002,
            "variance": 101.3626145
          },
          {
            "average": 0.5112452845,
            "count": 2890456,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998736141,
            "variance": 0.24987363
          },
          {
            "average": 169.7562125,
            "count": 2890456,
            "maximum": 210,
            "minimum": 150,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.35222819,
            "variance": 545.3265615
          },
          {
            "average": 216160654.9,
            "count": 2890456,
            "maximum": 216162113.9,
            "minimum": 216158272.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1288.265361,
            "variance": 1659627.64
          },
          {
            "average": 0.5112452845,
            "count": 2890456,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998736141,
            "variance": 0.24987363
          },
          {
            "average": 0,
            "count": 2890456,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2890456,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2890456,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1989277816,
            "count": 2890456,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3991936553,
            "variance": 0.1593555745
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          399898.8575,
          2268623.727,
          -2.92414277,
          400283.4575,
          2269134.407,
          70.09585723
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                399898.85750095977,
                2268623.7273401376,
                -2.92414276986306
              ],
              [
                399898.85750095977,
                2269134.4073401373,
                -2.92414276986306
              ],
              [
                400283.45750095975,
                2269134.4073401373,
                70.09585723013694
              ],
              [
                400283.45750095975,
                2268623.7273401376,
                70.09585723013694
              ],
              [
                399898.85750095977,
                2268623.7273401376,
                -2.92414276986306
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:33+00:00",
        "end_time": "2018-07-20T21:44:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_051.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_051.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_051.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_051.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6108595,
            70.11298095,
            -2.92414277,
            -143.5989694,
            70.11812927,
            70.09585723
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.61085948295153,
                  70.11352778870145,
                  -2.92414276986306
                ],
                [
                  -143.6088004786312,
                  70.11812927393069,
                  -2.92414276986306
                ],
                [
                  -143.59896935753395,
                  70.1175823137373,
                  70.09585723013694
                ],
                [
                  -143.60103024580002,
                  70.11298094956449,
                  70.09585723013694
                ],
                [
                  -143.61085948295153,
                  70.11352778870145,
                  -2.92414276986306
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_051.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_051.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:33Z",
            "pc:count": 2890456,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 400059.9278,
                "count": 2890456,
                "maximum": 400283.4575,
                "minimum": 399898.8575,
                "name": "X",
                "position": 0,
                "stddev": 88.12799601,
                "variance": 7766.543681
              },
              {
                "average": 2268935.534,
                "count": 2890456,
                "maximum": 2269134.407,
                "minimum": 2268623.727,
                "name": "Y",
                "position": 1,
                "stddev": 109.3108682,
                "variance": 11948.8659
              },
              {
                "average": 7.871311363,
                "count": 2890456,
                "maximum": 70.09585723,
                "minimum": -2.92414277,
                "name": "Z",
                "position": 2,
                "stddev": 3.105229768,
                "variance": 9.642451909
              },
              {
                "average": 26387.31597,
                "count": 2890456,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9304.936855,
                "variance": 86581849.87
              },
              {
                "average": 1.001336813,
                "count": 2890456,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03700842219,
                "variance": 0.001369623313
              },
              {
                "average": 1.00266394,
                "count": 2890456,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05254173354,
                "variance": 0.002760633764
              },
              {
                "average": 0.5017969483,
                "count": 2890456,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999968575,
                "variance": 0.2499968575
              },
              {
                "average": 0.0006172036523,
                "count": 2890456,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02483592006,
                "variance": 0.0006168229253
              },
              {
                "average": 2.252283377,
                "count": 2890456,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.67273101,
                "variance": 7.143491052
              },
              {
                "average": 0.7360458737,
                "count": 2890456,
                "maximum": 16.43400002,
                "minimum": -15.72599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.0679002,
                "variance": 101.3626145
              },
              {
                "average": 0.5112452845,
                "count": 2890456,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998736141,
                "variance": 0.24987363
              },
              {
                "average": 169.7562125,
                "count": 2890456,
                "maximum": 210,
                "minimum": 150,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.35222819,
                "variance": 545.3265615
              },
              {
                "average": 216160654.9,
                "count": 2890456,
                "maximum": 216162113.9,
                "minimum": 216158272.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1288.265361,
                "variance": 1659627.64
              },
              {
                "average": 0.5112452845,
                "count": 2890456,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998736141,
                "variance": 0.24987363
              },
              {
                "average": 0,
                "count": 2890456,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2890456,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2890456,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1989277816,
                "count": 2890456,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3991936553,
                "variance": 0.1593555745
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              399898.8575,
              2268623.727,
              -2.92414277,
              400283.4575,
              2269134.407,
              70.09585723
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    399898.85750095977,
                    2268623.7273401376,
                    -2.92414276986306
                  ],
                  [
                    399898.85750095977,
                    2269134.4073401373,
                    -2.92414276986306
                  ],
                  [
                    400283.45750095975,
                    2269134.4073401373,
                    70.09585723013694
                  ],
                  [
                    400283.45750095975,
                    2268623.7273401376,
                    70.09585723013694
                  ],
                  [
                    399898.85750095977,
                    2268623.7273401376,
                    -2.92414276986306
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:33+00:00",
            "end_time": "2018-07-20T21:44:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_074.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.6355814150008,
              70.12148934247638,
              12.280272422972265
            ],
            [
              -143.63346652515241,
              70.1262257470852,
              12.280272422972265
            ],
            [
              -143.6196688760262,
              70.12546003755358,
              25.440272422972264
            ],
            [
              -143.6217864885462,
              70.12072380745943,
              25.440272422972264
            ],
            [
              -143.6355814150008,
              70.12148934247638,
              12.280272422972265
            ]
          ]
        ]
      },
      "bbox": [
        -143.6355814,
        70.12072381,
        12.28027242,
        -143.6196689,
        70.12622575,
        25.44027242
      ],
      "properties": {
        "datetime": "2018-07-20T22:44:45Z",
        "pc:count": 3767554,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399117.0402,
            "count": 3767554,
            "maximum": 399358.9096,
            "minimum": 398819.3496,
            "name": "X",
            "position": 0,
            "stddev": 125.4210753,
            "variance": 15730.44613
          },
          {
            "average": 2269605.456,
            "count": 3767554,
            "maximum": 2269862.817,
            "minimum": 2269337.217,
            "name": "Y",
            "position": 1,
            "stddev": 133.0166197,
            "variance": 17693.42112
          },
          {
            "average": 15.0880225,
            "count": 3767554,
            "maximum": 25.44027242,
            "minimum": 12.28027242,
            "name": "Z",
            "position": 2,
            "stddev": 1.609884935,
            "variance": 2.591729505
          },
          {
            "average": 28481.18616,
            "count": 3767554,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11303.04558,
            "variance": 127758839.3
          },
          {
            "average": 1.000537484,
            "count": 3767554,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02330310256,
            "variance": 0.000543034589
          },
          {
            "average": 1.001072048,
            "count": 3767554,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03299117057,
            "variance": 0.001088417335
          },
          {
            "average": 0.5049761729,
            "count": 3767554,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999753034,
            "variance": 0.2499753041
          },
          {
            "average": 0.0005990624156,
            "count": 3767554,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02446842248,
            "variance": 0.0005987036987
          },
          {
            "average": 2.756997776,
            "count": 3767554,
            "maximum": 21,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.572540604,
            "variance": 12.76304637
          },
          {
            "average": -2.497163409,
            "count": 3767554,
            "maximum": 16.39800072,
            "minimum": -16.02000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.43278924,
            "variance": 88.97751284
          },
          {
            "average": 0.4718992747,
            "count": 3767554,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499209791,
            "variance": 0.2492104154
          },
          {
            "average": 168.5943251,
            "count": 3767554,
            "maximum": 202,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.69595948,
            "variance": 428.3227388
          },
          {
            "average": 216160759.1,
            "count": 3767554,
            "maximum": 216161885,
            "minimum": 216158292.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1399.7584,
            "variance": 1959323.577
          },
          {
            "average": 0.4718992747,
            "count": 3767554,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499209791,
            "variance": 0.2492104154
          },
          {
            "average": 0,
            "count": 3767554,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3767554,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3767554,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1791472664,
            "count": 3767554,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3834756346,
            "variance": 0.1470535624
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398819.3496,
          2269337.217,
          12.28027242,
          399358.9096,
          2269862.817,
          25.44027242
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398819.34963987215,
                2269337.2166994466,
                12.280272422972265
              ],
              [
                398819.34963987215,
                2269862.816699446,
                12.280272422972265
              ],
              [
                399358.9096398722,
                2269862.816699446,
                25.440272422972264
              ],
              [
                399358.9096398722,
                2269337.2166994466,
                25.440272422972264
              ],
              [
                398819.34963987215,
                2269337.2166994466,
                12.280272422972265
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:44:45+00:00",
        "end_time": "2018-07-20T21:44:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_074.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_074.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_074.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_074.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6355814,
            70.12072381,
            12.28027242,
            -143.6196689,
            70.12622575,
            25.44027242
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.6355814150008,
                  70.12148934247638,
                  12.280272422972265
                ],
                [
                  -143.63346652515241,
                  70.1262257470852,
                  12.280272422972265
                ],
                [
                  -143.6196688760262,
                  70.12546003755358,
                  25.440272422972264
                ],
                [
                  -143.6217864885462,
                  70.12072380745943,
                  25.440272422972264
                ],
                [
                  -143.6355814150008,
                  70.12148934247638,
                  12.280272422972265
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_074.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_074.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:44:45Z",
            "pc:count": 3767554,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399117.0402,
                "count": 3767554,
                "maximum": 399358.9096,
                "minimum": 398819.3496,
                "name": "X",
                "position": 0,
                "stddev": 125.4210753,
                "variance": 15730.44613
              },
              {
                "average": 2269605.456,
                "count": 3767554,
                "maximum": 2269862.817,
                "minimum": 2269337.217,
                "name": "Y",
                "position": 1,
                "stddev": 133.0166197,
                "variance": 17693.42112
              },
              {
                "average": 15.0880225,
                "count": 3767554,
                "maximum": 25.44027242,
                "minimum": 12.28027242,
                "name": "Z",
                "position": 2,
                "stddev": 1.609884935,
                "variance": 2.591729505
              },
              {
                "average": 28481.18616,
                "count": 3767554,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11303.04558,
                "variance": 127758839.3
              },
              {
                "average": 1.000537484,
                "count": 3767554,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02330310256,
                "variance": 0.000543034589
              },
              {
                "average": 1.001072048,
                "count": 3767554,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03299117057,
                "variance": 0.001088417335
              },
              {
                "average": 0.5049761729,
                "count": 3767554,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999753034,
                "variance": 0.2499753041
              },
              {
                "average": 0.0005990624156,
                "count": 3767554,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02446842248,
                "variance": 0.0005987036987
              },
              {
                "average": 2.756997776,
                "count": 3767554,
                "maximum": 21,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.572540604,
                "variance": 12.76304637
              },
              {
                "average": -2.497163409,
                "count": 3767554,
                "maximum": 16.39800072,
                "minimum": -16.02000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.43278924,
                "variance": 88.97751284
              },
              {
                "average": 0.4718992747,
                "count": 3767554,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499209791,
                "variance": 0.2492104154
              },
              {
                "average": 168.5943251,
                "count": 3767554,
                "maximum": 202,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.69595948,
                "variance": 428.3227388
              },
              {
                "average": 216160759.1,
                "count": 3767554,
                "maximum": 216161885,
                "minimum": 216158292.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1399.7584,
                "variance": 1959323.577
              },
              {
                "average": 0.4718992747,
                "count": 3767554,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499209791,
                "variance": 0.2492104154
              },
              {
                "average": 0,
                "count": 3767554,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3767554,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3767554,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1791472664,
                "count": 3767554,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3834756346,
                "variance": 0.1470535624
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398819.3496,
              2269337.217,
              12.28027242,
              399358.9096,
              2269862.817,
              25.44027242
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398819.34963987215,
                    2269337.2166994466,
                    12.280272422972265
                  ],
                  [
                    398819.34963987215,
                    2269862.816699446,
                    12.280272422972265
                  ],
                  [
                    399358.9096398722,
                    2269862.816699446,
                    25.440272422972264
                  ],
                  [
                    399358.9096398722,
                    2269337.2166994466,
                    25.440272422972264
                  ],
                  [
                    398819.34963987215,
                    2269337.2166994466,
                    12.280272422972265
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:44:45+00:00",
            "end_time": "2018-07-20T21:44:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180720_B18_NSB2_061.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -143.63525849375944,
              70.11739120010157,
              12.069989385793084
            ],
            [
              -143.63314382838763,
              70.12212767654655,
              12.069989385793084
            ],
            [
              -143.61934707150775,
              70.12136187521693,
              21.869989385793083
            ],
            [
              -143.6214644589957,
              70.11662557327097,
              21.869989385793083
            ],
            [
              -143.63525849375944,
              70.11739120010157,
              12.069989385793084
            ]
          ]
        ]
      },
      "bbox": [
        -143.6352585,
        70.11662557,
        12.06998939,
        -143.6193471,
        70.12212768,
        21.86998939
      ],
      "properties": {
        "datetime": "2018-07-20T22:48:20Z",
        "pc:count": 5742358,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": 399189.0266,
            "count": 5742358,
            "maximum": 399441.1251,
            "minimum": 398901.5051,
            "name": "X",
            "position": 0,
            "stddev": 129.5148492,
            "variance": 16774.09617
          },
          {
            "average": 2269142.909,
            "count": 5742358,
            "maximum": 2269420.982,
            "minimum": 2268895.362,
            "name": "Y",
            "position": 1,
            "stddev": 125.0734115,
            "variance": 15643.35827
          },
          {
            "average": 15.08724267,
            "count": 5742358,
            "maximum": 21.86998939,
            "minimum": 12.06998939,
            "name": "Z",
            "position": 2,
            "stddev": 1.59814685,
            "variance": 2.554073354
          },
          {
            "average": 32436.8523,
            "count": 5742358,
            "maximum": 65535,
            "minimum": 826,
            "name": "Intensity",
            "position": 3,
            "stddev": 7779.256697,
            "variance": 60516834.76
          },
          {
            "average": 1.000000174,
            "count": 5742358,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004173062294,
            "variance": 1.741444891e-07
          },
          {
            "average": 1.000000348,
            "count": 5742358,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0005901600779,
            "variance": 3.482889175e-07
          },
          {
            "average": 0.502183946,
            "count": 5742358,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999952739,
            "variance": 0.2499952739
          },
          {
            "average": 0.0006089832783,
            "count": 5742358,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02467007344,
            "variance": 0.0006086125237
          },
          {
            "average": 1.561864133,
            "count": 5742358,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.659011255,
            "variance": 2.752318345
          },
          {
            "average": -0.1991600532,
            "count": 5742358,
            "maximum": 16.44599915,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.68642018,
            "variance": 114.1995763
          },
          {
            "average": 0.4909298584,
            "count": 5742358,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999177693,
            "variance": 0.2499177761
          },
          {
            "average": 171.1736431,
            "count": 5742358,
            "maximum": 210,
            "minimum": 154,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.20241814,
            "variance": 492.9473712
          },
          {
            "average": 216160899.9,
            "count": 5742358,
            "maximum": 216162100.2,
            "minimum": 216158484.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1345.414249,
            "variance": 1810139.502
          },
          {
            "average": 0.4909298584,
            "count": 5742358,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999177693,
            "variance": 0.2499177761
          },
          {
            "average": 0,
            "count": 5742358,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5742358,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5742358,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2374519318,
            "count": 5742358,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4255214958,
            "variance": 0.1810685434
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          398901.5051,
          2268895.362,
          12.06998939,
          399441.1251,
          2269420.982,
          21.86998939
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                398901.50512266305,
                2268895.361832564,
                12.069989385793084
              ],
              [
                398901.50512266305,
                2269420.9818325643,
                12.069989385793084
              ],
              [
                399441.12512266304,
                2269420.9818325643,
                21.869989385793083
              ],
              [
                399441.12512266304,
                2268895.361832564,
                21.869989385793083
              ],
              [
                398901.50512266305,
                2268895.361832564,
                12.069989385793084
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-07-20T22:48:20+00:00",
        "end_time": "2018-07-20T21:48:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_1/20180720_B18_NSB2_061.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180720_B18_NSB2_061.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_1/20180720_B18_NSB2_061.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_061.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -143.6352585,
            70.11662557,
            12.06998939,
            -143.6193471,
            70.12212768,
            21.86998939
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -143.63525849375944,
                  70.11739120010157,
                  12.069989385793084
                ],
                [
                  -143.63314382838763,
                  70.12212767654655,
                  12.069989385793084
                ],
                [
                  -143.61934707150775,
                  70.12136187521693,
                  21.869989385793083
                ],
                [
                  -143.6214644589957,
                  70.11662557327097,
                  21.869989385793083
                ],
                [
                  -143.63525849375944,
                  70.11739120010157,
                  12.069989385793084
                ]
              ]
            ]
          },
          "id": "20180720_B18_NSB2_061.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_1/20180720_B18_NSB2_061.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-07-20T22:48:20Z",
            "pc:count": 5742358,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": 399189.0266,
                "count": 5742358,
                "maximum": 399441.1251,
                "minimum": 398901.5051,
                "name": "X",
                "position": 0,
                "stddev": 129.5148492,
                "variance": 16774.09617
              },
              {
                "average": 2269142.909,
                "count": 5742358,
                "maximum": 2269420.982,
                "minimum": 2268895.362,
                "name": "Y",
                "position": 1,
                "stddev": 125.0734115,
                "variance": 15643.35827
              },
              {
                "average": 15.08724267,
                "count": 5742358,
                "maximum": 21.86998939,
                "minimum": 12.06998939,
                "name": "Z",
                "position": 2,
                "stddev": 1.59814685,
                "variance": 2.554073354
              },
              {
                "average": 32436.8523,
                "count": 5742358,
                "maximum": 65535,
                "minimum": 826,
                "name": "Intensity",
                "position": 3,
                "stddev": 7779.256697,
                "variance": 60516834.76
              },
              {
                "average": 1.000000174,
                "count": 5742358,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004173062294,
                "variance": 1.741444891e-07
              },
              {
                "average": 1.000000348,
                "count": 5742358,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0005901600779,
                "variance": 3.482889175e-07
              },
              {
                "average": 0.502183946,
                "count": 5742358,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999952739,
                "variance": 0.2499952739
              },
              {
                "average": 0.0006089832783,
                "count": 5742358,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02467007344,
                "variance": 0.0006086125237
              },
              {
                "average": 1.561864133,
                "count": 5742358,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.659011255,
                "variance": 2.752318345
              },
              {
                "average": -0.1991600532,
                "count": 5742358,
                "maximum": 16.44599915,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.68642018,
                "variance": 114.1995763
              },
              {
                "average": 0.4909298584,
                "count": 5742358,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999177693,
                "variance": 0.2499177761
              },
              {
                "average": 171.1736431,
                "count": 5742358,
                "maximum": 210,
                "minimum": 154,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.20241814,
                "variance": 492.9473712
              },
              {
                "average": 216160899.9,
                "count": 5742358,
                "maximum": 216162100.2,
                "minimum": 216158484.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1345.414249,
                "variance": 1810139.502
              },
              {
                "average": 0.4909298584,
                "count": 5742358,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999177693,
                "variance": 0.2499177761
              },
              {
                "average": 0,
                "count": 5742358,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5742358,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5742358,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2374519318,
                "count": 5742358,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4255214958,
                "variance": 0.1810685434
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              398901.5051,
              2268895.362,
              12.06998939,
              399441.1251,
              2269420.982,
              21.86998939
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    398901.50512266305,
                    2268895.361832564,
                    12.069989385793084
                  ],
                  [
                    398901.50512266305,
                    2269420.9818325643,
                    12.069989385793084
                  ],
                  [
                    399441.12512266304,
                    2269420.9818325643,
                    21.869989385793083
                  ],
                  [
                    399441.12512266304,
                    2268895.361832564,
                    21.869989385793083
                  ],
                  [
                    398901.50512266305,
                    2268895.361832564,
                    12.069989385793084
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-07-20T22:48:20+00:00",
            "end_time": "2018-07-20T21:48:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0268.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.39485851598496,
              70.47182814629222,
              8.439785594596787
            ],
            [
              -157.39549719305015,
              70.47616971652417,
              8.439785594596787
            ],
            [
              -157.3825636185224,
              70.4763994688408,
              19.91978559459679
            ],
            [
              -157.38192736576732,
              70.4720578496694,
              19.91978559459679
            ],
            [
              -157.39485851598496,
              70.47182814629222,
              8.439785594596787
            ]
          ]
        ]
      },
      "bbox": [
        -157.3954972,
        70.47182815,
        8.439785595,
        -157.3819274,
        70.47639947,
        19.91978559
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:22Z",
        "pc:count": 4762591,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128902.8543,
            "count": 4762591,
            "maximum": -128654.4428,
            "minimum": -129147.2228,
            "name": "X",
            "position": 0,
            "stddev": 136.5743931,
            "variance": 18652.56486
          },
          {
            "average": 2280064.639,
            "count": 4762591,
            "maximum": 2280298.335,
            "minimum": 2279822.715,
            "name": "Y",
            "position": 1,
            "stddev": 130.1916248,
            "variance": 16949.85916
          },
          {
            "average": 16.2219686,
            "count": 4762591,
            "maximum": 19.91978559,
            "minimum": 8.439785595,
            "name": "Z",
            "position": 2,
            "stddev": 1.993414799,
            "variance": 3.973702562
          },
          {
            "average": 44780.81658,
            "count": 4762591,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 12278.36539,
            "variance": 150758256.5
          },
          {
            "average": 1.000045353,
            "count": 4762591,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.006734346048,
            "variance": 4.53514167e-05
          },
          {
            "average": 1.000091547,
            "count": 4762591,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009567572607,
            "variance": 9.153844559e-05
          },
          {
            "average": 0.5017481031,
            "count": 4762591,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999969966,
            "variance": 0.2499969966
          },
          {
            "average": 0.0003277627661,
            "count": 4762591,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01810125428,
            "variance": 0.0003276554065
          },
          {
            "average": 1.702080443,
            "count": 4762591,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.883074776,
            "variance": 3.545970612
          },
          {
            "average": -1.247462216,
            "count": 4762591,
            "maximum": 20.47800064,
            "minimum": -19.78199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32079607,
            "variance": 106.5188315
          },
          {
            "average": 0.4861282441,
            "count": 4762591,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998075898,
            "variance": 0.2498076268
          },
          {
            "average": 664.3482541,
            "count": 4762591,
            "maximum": 711,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.91130783,
            "variance": 396.4601795
          },
          {
            "average": 222295807.7,
            "count": 4762591,
            "maximum": 222299682.8,
            "minimum": 222294864.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1557.979775,
            "variance": 2427300.979
          },
          {
            "average": 0.4861282441,
            "count": 4762591,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998075898,
            "variance": 0.2498076268
          },
          {
            "average": 0,
            "count": 4762591,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4762591,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4762591,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1884092083,
            "count": 4762591,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3910386307,
            "variance": 0.1529112107
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129147.2228,
          2279822.715,
          8.439785595,
          -128654.4428,
          2280298.335,
          19.91978559
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129147.22283477568,
                2279822.7146592005,
                8.439785594596787
              ],
              [
                -129147.22283477568,
                2280298.3346592006,
                8.439785594596787
              ],
              [
                -128654.44283477568,
                2280298.3346592006,
                19.91978559459679
              ],
              [
                -128654.44283477568,
                2279822.7146592005,
                19.91978559459679
              ],
              [
                -129147.22283477568,
                2279822.7146592005,
                8.439785594596787
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:22+00:00",
        "end_time": "2018-09-29T22:21:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0268.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0268.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0268.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0268.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3954972,
            70.47182815,
            8.439785595,
            -157.3819274,
            70.47639947,
            19.91978559
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.39485851598496,
                  70.47182814629222,
                  8.439785594596787
                ],
                [
                  -157.39549719305015,
                  70.47616971652417,
                  8.439785594596787
                ],
                [
                  -157.3825636185224,
                  70.4763994688408,
                  19.91978559459679
                ],
                [
                  -157.38192736576732,
                  70.4720578496694,
                  19.91978559459679
                ],
                [
                  -157.39485851598496,
                  70.47182814629222,
                  8.439785594596787
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0268.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0268.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:22Z",
            "pc:count": 4762591,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128902.8543,
                "count": 4762591,
                "maximum": -128654.4428,
                "minimum": -129147.2228,
                "name": "X",
                "position": 0,
                "stddev": 136.5743931,
                "variance": 18652.56486
              },
              {
                "average": 2280064.639,
                "count": 4762591,
                "maximum": 2280298.335,
                "minimum": 2279822.715,
                "name": "Y",
                "position": 1,
                "stddev": 130.1916248,
                "variance": 16949.85916
              },
              {
                "average": 16.2219686,
                "count": 4762591,
                "maximum": 19.91978559,
                "minimum": 8.439785595,
                "name": "Z",
                "position": 2,
                "stddev": 1.993414799,
                "variance": 3.973702562
              },
              {
                "average": 44780.81658,
                "count": 4762591,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 12278.36539,
                "variance": 150758256.5
              },
              {
                "average": 1.000045353,
                "count": 4762591,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.006734346048,
                "variance": 4.53514167e-05
              },
              {
                "average": 1.000091547,
                "count": 4762591,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009567572607,
                "variance": 9.153844559e-05
              },
              {
                "average": 0.5017481031,
                "count": 4762591,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999969966,
                "variance": 0.2499969966
              },
              {
                "average": 0.0003277627661,
                "count": 4762591,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01810125428,
                "variance": 0.0003276554065
              },
              {
                "average": 1.702080443,
                "count": 4762591,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.883074776,
                "variance": 3.545970612
              },
              {
                "average": -1.247462216,
                "count": 4762591,
                "maximum": 20.47800064,
                "minimum": -19.78199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32079607,
                "variance": 106.5188315
              },
              {
                "average": 0.4861282441,
                "count": 4762591,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998075898,
                "variance": 0.2498076268
              },
              {
                "average": 664.3482541,
                "count": 4762591,
                "maximum": 711,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.91130783,
                "variance": 396.4601795
              },
              {
                "average": 222295807.7,
                "count": 4762591,
                "maximum": 222299682.8,
                "minimum": 222294864.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1557.979775,
                "variance": 2427300.979
              },
              {
                "average": 0.4861282441,
                "count": 4762591,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998075898,
                "variance": 0.2498076268
              },
              {
                "average": 0,
                "count": 4762591,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4762591,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4762591,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1884092083,
                "count": 4762591,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3910386307,
                "variance": 0.1529112107
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129147.2228,
              2279822.715,
              8.439785595,
              -128654.4428,
              2280298.335,
              19.91978559
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129147.22283477568,
                    2279822.7146592005,
                    8.439785594596787
                  ],
                  [
                    -129147.22283477568,
                    2280298.3346592006,
                    8.439785594596787
                  ],
                  [
                    -128654.44283477568,
                    2280298.3346592006,
                    19.91978559459679
                  ],
                  [
                    -128654.44283477568,
                    2279822.7146592005,
                    19.91978559459679
                  ],
                  [
                    -129147.22283477568,
                    2279822.7146592005,
                    8.439785594596787
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:22+00:00",
            "end_time": "2018-09-29T22:21:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0218.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4440880137686,
              70.46378756433369,
              23.472144897149718
            ],
            [
              -157.4447359093696,
              70.46813004503952,
              23.472144897149718
            ],
            [
              -157.43180575327054,
              70.46836315010694,
              31.21214489714972
            ],
            [
              -157.43116028093075,
              70.46402061975925,
              31.21214489714972
            ],
            [
              -157.4440880137686,
              70.46378756433369,
              23.472144897149718
            ]
          ]
        ]
      },
      "bbox": [
        -157.4447359,
        70.46378756,
        23.4721449,
        -157.4311603,
        70.46836315,
        31.2121449
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:38Z",
        "pc:count": 6318990,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130815.3677,
            "count": 6318990,
            "maximum": -130571.1068,
            "minimum": -131063.9468,
            "name": "X",
            "position": 0,
            "stddev": 138.288961,
            "variance": 19123.83675
          },
          {
            "average": 2279288.275,
            "count": 6318990,
            "maximum": 2279516.358,
            "minimum": 2279040.598,
            "name": "Y",
            "position": 1,
            "stddev": 126.8307079,
            "variance": 16086.02846
          },
          {
            "average": 27.77713998,
            "count": 6318990,
            "maximum": 31.2121449,
            "minimum": 23.4721449,
            "name": "Z",
            "position": 2,
            "stddev": 1.814691338,
            "variance": 3.293104653
          },
          {
            "average": 41585.12462,
            "count": 6318990,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 11459.88234,
            "variance": 131328903.2
          },
          {
            "average": 1,
            "count": 6318990,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 6318990,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995774641,
            "count": 6318990,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999861,
            "variance": 0.249999861
          },
          {
            "average": 0.0002625419569,
            "count": 6318990,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01620102065,
            "variance": 0.0002624730701
          },
          {
            "average": 1.221123471,
            "count": 6318990,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5172463524,
            "variance": 0.2675437891
          },
          {
            "average": 1.35282091,
            "count": 6318990,
            "maximum": 20.36400032,
            "minimum": -19.70999908,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.823182514,
            "variance": 96.4949147
          },
          {
            "average": 0.50593655,
            "count": 6318990,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999647957,
            "variance": 0.2499647969
          },
          {
            "average": 665.2953255,
            "count": 6318990,
            "maximum": 708,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.83509129,
            "variance": 250.7501163
          },
          {
            "average": 222296120.9,
            "count": 6318990,
            "maximum": 222298858.7,
            "minimum": 222295374.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 943.2157415,
            "variance": 889655.935
          },
          {
            "average": 0.50593655,
            "count": 6318990,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999647957,
            "variance": 0.2499647969
          },
          {
            "average": 0,
            "count": 6318990,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6318990,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6318990,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1986206656,
            "count": 6318990,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3989618052,
            "variance": 0.159170522
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131063.9468,
          2279040.598,
          23.4721449,
          -130571.1068,
          2279516.358,
          31.2121449
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131063.94678115872,
                2279040.5976195643,
                23.472144897149718
              ],
              [
                -131063.94678115872,
                2279516.357619564,
                23.472144897149718
              ],
              [
                -130571.10678115873,
                2279516.357619564,
                31.21214489714972
              ],
              [
                -130571.10678115873,
                2279040.5976195643,
                31.21214489714972
              ],
              [
                -131063.94678115872,
                2279040.5976195643,
                23.472144897149718
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:38+00:00",
        "end_time": "2018-09-29T22:29:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0218.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0218.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0218.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0218.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4447359,
            70.46378756,
            23.4721449,
            -157.4311603,
            70.46836315,
            31.2121449
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4440880137686,
                  70.46378756433369,
                  23.472144897149718
                ],
                [
                  -157.4447359093696,
                  70.46813004503952,
                  23.472144897149718
                ],
                [
                  -157.43180575327054,
                  70.46836315010694,
                  31.21214489714972
                ],
                [
                  -157.43116028093075,
                  70.46402061975925,
                  31.21214489714972
                ],
                [
                  -157.4440880137686,
                  70.46378756433369,
                  23.472144897149718
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0218.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0218.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:38Z",
            "pc:count": 6318990,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130815.3677,
                "count": 6318990,
                "maximum": -130571.1068,
                "minimum": -131063.9468,
                "name": "X",
                "position": 0,
                "stddev": 138.288961,
                "variance": 19123.83675
              },
              {
                "average": 2279288.275,
                "count": 6318990,
                "maximum": 2279516.358,
                "minimum": 2279040.598,
                "name": "Y",
                "position": 1,
                "stddev": 126.8307079,
                "variance": 16086.02846
              },
              {
                "average": 27.77713998,
                "count": 6318990,
                "maximum": 31.2121449,
                "minimum": 23.4721449,
                "name": "Z",
                "position": 2,
                "stddev": 1.814691338,
                "variance": 3.293104653
              },
              {
                "average": 41585.12462,
                "count": 6318990,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 11459.88234,
                "variance": 131328903.2
              },
              {
                "average": 1,
                "count": 6318990,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 6318990,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995774641,
                "count": 6318990,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999861,
                "variance": 0.249999861
              },
              {
                "average": 0.0002625419569,
                "count": 6318990,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01620102065,
                "variance": 0.0002624730701
              },
              {
                "average": 1.221123471,
                "count": 6318990,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5172463524,
                "variance": 0.2675437891
              },
              {
                "average": 1.35282091,
                "count": 6318990,
                "maximum": 20.36400032,
                "minimum": -19.70999908,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.823182514,
                "variance": 96.4949147
              },
              {
                "average": 0.50593655,
                "count": 6318990,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999647957,
                "variance": 0.2499647969
              },
              {
                "average": 665.2953255,
                "count": 6318990,
                "maximum": 708,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.83509129,
                "variance": 250.7501163
              },
              {
                "average": 222296120.9,
                "count": 6318990,
                "maximum": 222298858.7,
                "minimum": 222295374.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 943.2157415,
                "variance": 889655.935
              },
              {
                "average": 0.50593655,
                "count": 6318990,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999647957,
                "variance": 0.2499647969
              },
              {
                "average": 0,
                "count": 6318990,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6318990,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6318990,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1986206656,
                "count": 6318990,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3989618052,
                "variance": 0.159170522
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131063.9468,
              2279040.598,
              23.4721449,
              -130571.1068,
              2279516.358,
              31.2121449
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131063.94678115872,
                    2279040.5976195643,
                    23.472144897149718
                  ],
                  [
                    -131063.94678115872,
                    2279516.357619564,
                    23.472144897149718
                  ],
                  [
                    -130571.10678115873,
                    2279516.357619564,
                    31.21214489714972
                  ],
                  [
                    -130571.10678115873,
                    2279040.5976195643,
                    31.21214489714972
                  ],
                  [
                    -131063.94678115872,
                    2279040.5976195643,
                    23.472144897149718
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:38+00:00",
            "end_time": "2018-09-29T22:29:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0263.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.45611359229,
              70.47202154553025,
              20.133206611950044
            ],
            [
              -157.45676387047865,
              70.47636346151553,
              20.133206611950044
            ],
            [
              -157.4438318510448,
              70.47659734490664,
              20.57320661195004
            ],
            [
              -157.44318399685415,
              70.47225537909742,
              20.57320661195004
            ],
            [
              -157.45611359229,
              70.47202154553025,
              20.133206611950044
            ]
          ]
        ]
      },
      "bbox": [
        -157.4567639,
        70.47202155,
        20.13320661,
        -157.443184,
        70.47659734,
        20.57320661
      ],
      "properties": {
        "datetime": "2018-09-29T23:22:09Z",
        "pc:count": 3971517,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131238.0638,
            "count": 3971517,
            "maximum": -130981.5627,
            "minimum": -131474.3027,
            "name": "X",
            "position": 0,
            "stddev": 137.9903365,
            "variance": 19041.33297
          },
          {
            "average": 2280201.024,
            "count": 3971517,
            "maximum": 2280439.72,
            "minimum": 2279964.04,
            "name": "Y",
            "position": 1,
            "stddev": 127.9120056,
            "variance": 16361.48117
          },
          {
            "average": 20.32662811,
            "count": 3971517,
            "maximum": 20.57320661,
            "minimum": 20.13320661,
            "name": "Z",
            "position": 2,
            "stddev": 0.04362186396,
            "variance": 0.001902867015
          },
          {
            "average": 11761.73744,
            "count": 3971517,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8177.230384,
            "variance": 66867096.75
          },
          {
            "average": 1,
            "count": 3971517,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3971517,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4952276422,
            "count": 3971517,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499977287,
            "variance": 0.2499772875
          },
          {
            "average": 0.000422256785,
            "count": 3971517,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02054455136,
            "variance": 0.0004220785905
          },
          {
            "average": 7.47271559,
            "count": 3971517,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.015082956,
            "variance": 9.090725229
          },
          {
            "average": 2.438322216,
            "count": 3971517,
            "maximum": 20.3939991,
            "minimum": -16.03800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.695812802,
            "variance": 75.61716029
          },
          {
            "average": 0.4913963606,
            "count": 3971517,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999260348,
            "variance": 0.2499260403
          },
          {
            "average": 664.1796573,
            "count": 3971517,
            "maximum": 707,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.79966078,
            "variance": 353.4272455
          },
          {
            "average": 222295687,
            "count": 3971517,
            "maximum": 222298529.5,
            "minimum": 222294831.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1197.150175,
            "variance": 1433168.541
          },
          {
            "average": 0.4913963606,
            "count": 3971517,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999260348,
            "variance": 0.2499260403
          },
          {
            "average": 0,
            "count": 3971517,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3971517,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3971517,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08140541763,
            "count": 3971517,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2734567506,
            "variance": 0.07477859444
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131474.3027,
          2279964.04,
          20.13320661,
          -130981.5627,
          2280439.72,
          20.57320661
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131474.30266154045,
                2279964.0398116894,
                20.133206611950044
              ],
              [
                -131474.30266154045,
                2280439.719811689,
                20.133206611950044
              ],
              [
                -130981.56266154046,
                2280439.719811689,
                20.57320661195004
              ],
              [
                -130981.56266154046,
                2279964.0398116894,
                20.57320661195004
              ],
              [
                -131474.30266154045,
                2279964.0398116894,
                20.133206611950044
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:22:09+00:00",
        "end_time": "2018-09-29T22:20:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0263.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0263.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0263.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0263.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4567639,
            70.47202155,
            20.13320661,
            -157.443184,
            70.47659734,
            20.57320661
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.45611359229,
                  70.47202154553025,
                  20.133206611950044
                ],
                [
                  -157.45676387047865,
                  70.47636346151553,
                  20.133206611950044
                ],
                [
                  -157.4438318510448,
                  70.47659734490664,
                  20.57320661195004
                ],
                [
                  -157.44318399685415,
                  70.47225537909742,
                  20.57320661195004
                ],
                [
                  -157.45611359229,
                  70.47202154553025,
                  20.133206611950044
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0263.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0263.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:22:09Z",
            "pc:count": 3971517,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131238.0638,
                "count": 3971517,
                "maximum": -130981.5627,
                "minimum": -131474.3027,
                "name": "X",
                "position": 0,
                "stddev": 137.9903365,
                "variance": 19041.33297
              },
              {
                "average": 2280201.024,
                "count": 3971517,
                "maximum": 2280439.72,
                "minimum": 2279964.04,
                "name": "Y",
                "position": 1,
                "stddev": 127.9120056,
                "variance": 16361.48117
              },
              {
                "average": 20.32662811,
                "count": 3971517,
                "maximum": 20.57320661,
                "minimum": 20.13320661,
                "name": "Z",
                "position": 2,
                "stddev": 0.04362186396,
                "variance": 0.001902867015
              },
              {
                "average": 11761.73744,
                "count": 3971517,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8177.230384,
                "variance": 66867096.75
              },
              {
                "average": 1,
                "count": 3971517,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3971517,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4952276422,
                "count": 3971517,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499977287,
                "variance": 0.2499772875
              },
              {
                "average": 0.000422256785,
                "count": 3971517,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02054455136,
                "variance": 0.0004220785905
              },
              {
                "average": 7.47271559,
                "count": 3971517,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.015082956,
                "variance": 9.090725229
              },
              {
                "average": 2.438322216,
                "count": 3971517,
                "maximum": 20.3939991,
                "minimum": -16.03800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.695812802,
                "variance": 75.61716029
              },
              {
                "average": 0.4913963606,
                "count": 3971517,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999260348,
                "variance": 0.2499260403
              },
              {
                "average": 664.1796573,
                "count": 3971517,
                "maximum": 707,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.79966078,
                "variance": 353.4272455
              },
              {
                "average": 222295687,
                "count": 3971517,
                "maximum": 222298529.5,
                "minimum": 222294831.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1197.150175,
                "variance": 1433168.541
              },
              {
                "average": 0.4913963606,
                "count": 3971517,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999260348,
                "variance": 0.2499260403
              },
              {
                "average": 0,
                "count": 3971517,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3971517,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3971517,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08140541763,
                "count": 3971517,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2734567506,
                "variance": 0.07477859444
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131474.3027,
              2279964.04,
              20.13320661,
              -130981.5627,
              2280439.72,
              20.57320661
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131474.30266154045,
                    2279964.0398116894,
                    20.133206611950044
                  ],
                  [
                    -131474.30266154045,
                    2280439.719811689,
                    20.133206611950044
                  ],
                  [
                    -130981.56266154046,
                    2280439.719811689,
                    20.57320661195004
                  ],
                  [
                    -130981.56266154046,
                    2279964.0398116894,
                    20.57320661195004
                  ],
                  [
                    -131474.30266154045,
                    2279964.0398116894,
                    20.133206611950044
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:22:09+00:00",
            "end_time": "2018-09-29T22:20:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0219.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.43184061924876,
              70.46374955233713,
              21.06691994996448
            ],
            [
              -157.4324862118859,
              70.46809207359385,
              21.06691994996448
            ],
            [
              -157.41955857754883,
              70.46832430180848,
              31.186919949964484
            ],
            [
              -157.4189154077658,
              70.46398173109628,
              31.186919949964484
            ],
            [
              -157.43184061924876,
              70.46374955233713,
              21.06691994996448
            ]
          ]
        ]
      },
      "bbox": [
        -157.4324862,
        70.46374955,
        21.06691995,
        -157.4189154,
        70.4683243,
        31.18691995
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:39Z",
        "pc:count": 5941972,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130370.9957,
            "count": 5941972,
            "maximum": -130105.7656,
            "minimum": -130598.5056,
            "name": "X",
            "position": 0,
            "stddev": 130.9999187,
            "variance": 17160.97871
          },
          {
            "average": 2279261.713,
            "count": 5941972,
            "maximum": 2279488.077,
            "minimum": 2279012.317,
            "name": "Y",
            "position": 1,
            "stddev": 126.1924826,
            "variance": 15924.54265
          },
          {
            "average": 26.77541991,
            "count": 5941972,
            "maximum": 31.18691995,
            "minimum": 21.06691995,
            "name": "Z",
            "position": 2,
            "stddev": 2.082607602,
            "variance": 4.337254424
          },
          {
            "average": 42765.95874,
            "count": 5941972,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 11811.98427,
            "variance": 139522972.5
          },
          {
            "average": 1,
            "count": 5941972,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5941972,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5070527091,
            "count": 5941972,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999502989,
            "variance": 0.2499503014
          },
          {
            "average": 0.0002849222447,
            "count": 5941972,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0168772365,
            "variance": 0.0002848411119
          },
          {
            "average": 1.216200951,
            "count": 5941972,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4146460924,
            "variance": 0.171931382
          },
          {
            "average": -2.70380015,
            "count": 5941972,
            "maximum": 16.67399979,
            "minimum": -19.74600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51498869,
            "variance": 110.5649871
          },
          {
            "average": 0.5012184507,
            "count": 5941972,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999985574,
            "variance": 0.2499985575
          },
          {
            "average": 666.3438167,
            "count": 5941972,
            "maximum": 708,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.24782672,
            "variance": 297.4875265
          },
          {
            "average": 222296187.7,
            "count": 5941972,
            "maximum": 222298859,
            "minimum": 222295367.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1078.745211,
            "variance": 1163691.229
          },
          {
            "average": 0.5012184507,
            "count": 5941972,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999985574,
            "variance": 0.2499985575
          },
          {
            "average": 0,
            "count": 5941972,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5941972,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5941972,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2268186387,
            "count": 5941972,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4187743704,
            "variance": 0.1753719733
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130598.5056,
          2279012.317,
          21.06691995,
          -130105.7656,
          2279488.077,
          31.18691995
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130598.50561148199,
                2279012.3165290984,
                21.06691994996448
              ],
              [
                -130598.50561148199,
                2279488.076529098,
                21.06691994996448
              ],
              [
                -130105.765611482,
                2279488.076529098,
                31.186919949964484
              ],
              [
                -130105.765611482,
                2279012.3165290984,
                31.186919949964484
              ],
              [
                -130598.50561148199,
                2279012.3165290984,
                21.06691994996448
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:39+00:00",
        "end_time": "2018-09-29T22:29:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0219.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0219.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0219.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0219.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4324862,
            70.46374955,
            21.06691995,
            -157.4189154,
            70.4683243,
            31.18691995
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.43184061924876,
                  70.46374955233713,
                  21.06691994996448
                ],
                [
                  -157.4324862118859,
                  70.46809207359385,
                  21.06691994996448
                ],
                [
                  -157.41955857754883,
                  70.46832430180848,
                  31.186919949964484
                ],
                [
                  -157.4189154077658,
                  70.46398173109628,
                  31.186919949964484
                ],
                [
                  -157.43184061924876,
                  70.46374955233713,
                  21.06691994996448
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0219.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0219.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:39Z",
            "pc:count": 5941972,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130370.9957,
                "count": 5941972,
                "maximum": -130105.7656,
                "minimum": -130598.5056,
                "name": "X",
                "position": 0,
                "stddev": 130.9999187,
                "variance": 17160.97871
              },
              {
                "average": 2279261.713,
                "count": 5941972,
                "maximum": 2279488.077,
                "minimum": 2279012.317,
                "name": "Y",
                "position": 1,
                "stddev": 126.1924826,
                "variance": 15924.54265
              },
              {
                "average": 26.77541991,
                "count": 5941972,
                "maximum": 31.18691995,
                "minimum": 21.06691995,
                "name": "Z",
                "position": 2,
                "stddev": 2.082607602,
                "variance": 4.337254424
              },
              {
                "average": 42765.95874,
                "count": 5941972,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 11811.98427,
                "variance": 139522972.5
              },
              {
                "average": 1,
                "count": 5941972,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5941972,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5070527091,
                "count": 5941972,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999502989,
                "variance": 0.2499503014
              },
              {
                "average": 0.0002849222447,
                "count": 5941972,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0168772365,
                "variance": 0.0002848411119
              },
              {
                "average": 1.216200951,
                "count": 5941972,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4146460924,
                "variance": 0.171931382
              },
              {
                "average": -2.70380015,
                "count": 5941972,
                "maximum": 16.67399979,
                "minimum": -19.74600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51498869,
                "variance": 110.5649871
              },
              {
                "average": 0.5012184507,
                "count": 5941972,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999985574,
                "variance": 0.2499985575
              },
              {
                "average": 666.3438167,
                "count": 5941972,
                "maximum": 708,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.24782672,
                "variance": 297.4875265
              },
              {
                "average": 222296187.7,
                "count": 5941972,
                "maximum": 222298859,
                "minimum": 222295367.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1078.745211,
                "variance": 1163691.229
              },
              {
                "average": 0.5012184507,
                "count": 5941972,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999985574,
                "variance": 0.2499985575
              },
              {
                "average": 0,
                "count": 5941972,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5941972,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5941972,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2268186387,
                "count": 5941972,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4187743704,
                "variance": 0.1753719733
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130598.5056,
              2279012.317,
              21.06691995,
              -130105.7656,
              2279488.077,
              31.18691995
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130598.50561148199,
                    2279012.3165290984,
                    21.06691994996448
                  ],
                  [
                    -130598.50561148199,
                    2279488.076529098,
                    21.06691994996448
                  ],
                  [
                    -130105.765611482,
                    2279488.076529098,
                    31.186919949964484
                  ],
                  [
                    -130105.765611482,
                    2279012.3165290984,
                    31.186919949964484
                  ],
                  [
                    -130598.50561148199,
                    2279012.3165290984,
                    21.06691994996448
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:39+00:00",
            "end_time": "2018-09-29T22:29:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0285.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.46825930654077,
              70.47615591438968,
              20.079378213492518
            ],
            [
              -157.46891195728736,
              70.48049771011887,
              20.079378213492518
            ],
            [
              -157.45597459578153,
              70.48073247883146,
              20.659378213492516
            ],
            [
              -157.45532437029686,
              70.47639063307955,
              20.659378213492516
            ],
            [
              -157.46825930654077,
              70.47615591438968,
              20.079378213492518
            ]
          ]
        ]
      },
      "bbox": [
        -157.468912,
        70.47615591,
        20.07937821,
        -157.4553244,
        70.48073248,
        20.65937821
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:29Z",
        "pc:count": 3363766,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131665.6626,
            "count": 3363766,
            "maximum": -131419.4476,
            "minimum": -131912.3076,
            "name": "X",
            "position": 0,
            "stddev": 134.8680927,
            "variance": 18189.40244
          },
          {
            "average": 2280675.768,
            "count": 3363766,
            "maximum": 2280915.499,
            "minimum": 2280439.839,
            "name": "Y",
            "position": 1,
            "stddev": 128.7117624,
            "variance": 16566.71779
          },
          {
            "average": 20.32137978,
            "count": 3363766,
            "maximum": 20.65937821,
            "minimum": 20.07937821,
            "name": "Z",
            "position": 2,
            "stddev": 0.05284861567,
            "variance": 0.002792976179
          },
          {
            "average": 12214.36217,
            "count": 3363766,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8438.870961,
            "variance": 71214543.1
          },
          {
            "average": 1,
            "count": 3363766,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3363766,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.504821679,
            "count": 3363766,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999768252,
            "variance": 0.2499768257
          },
          {
            "average": 0.0004628740525,
            "count": 3363766,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02150953132,
            "variance": 0.0004626599376
          },
          {
            "average": 7.323056955,
            "count": 3363766,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.094210956,
            "variance": 9.574141441
          },
          {
            "average": -1.812059949,
            "count": 3363766,
            "maximum": 16.44000053,
            "minimum": -19.79999924,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.13626415,
            "variance": 66.19879432
          },
          {
            "average": 0.4838332987,
            "count": 3363766,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997386437,
            "variance": 0.249738712
          },
          {
            "average": 662.0217551,
            "count": 3363766,
            "maximum": 706,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.61854842,
            "variance": 346.6503454
          },
          {
            "average": 222295366.9,
            "count": 3363766,
            "maximum": 222298249.1,
            "minimum": 222294485.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1192.542433,
            "variance": 1422157.456
          },
          {
            "average": 0.4838332987,
            "count": 3363766,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997386437,
            "variance": 0.249738712
          },
          {
            "average": 0,
            "count": 3363766,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3363766,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3363766,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06668210571,
            "count": 3363766,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2494706816,
            "variance": 0.06223562099
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131912.3076,
          2280439.839,
          20.07937821,
          -131419.4476,
          2280915.499,
          20.65937821
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131912.30764138937,
                2280439.83931698,
                20.079378213492518
              ],
              [
                -131912.30764138937,
                2280915.49931698,
                20.079378213492518
              ],
              [
                -131419.4476413894,
                2280915.49931698,
                20.659378213492516
              ],
              [
                -131419.4476413894,
                2280439.83931698,
                20.659378213492516
              ],
              [
                -131912.30764138937,
                2280439.83931698,
                20.079378213492518
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:29+00:00",
        "end_time": "2018-09-29T22:14:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0285.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0285.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0285.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0285.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.468912,
            70.47615591,
            20.07937821,
            -157.4553244,
            70.48073248,
            20.65937821
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.46825930654077,
                  70.47615591438968,
                  20.079378213492518
                ],
                [
                  -157.46891195728736,
                  70.48049771011887,
                  20.079378213492518
                ],
                [
                  -157.45597459578153,
                  70.48073247883146,
                  20.659378213492516
                ],
                [
                  -157.45532437029686,
                  70.47639063307955,
                  20.659378213492516
                ],
                [
                  -157.46825930654077,
                  70.47615591438968,
                  20.079378213492518
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0285.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0285.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:29Z",
            "pc:count": 3363766,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131665.6626,
                "count": 3363766,
                "maximum": -131419.4476,
                "minimum": -131912.3076,
                "name": "X",
                "position": 0,
                "stddev": 134.8680927,
                "variance": 18189.40244
              },
              {
                "average": 2280675.768,
                "count": 3363766,
                "maximum": 2280915.499,
                "minimum": 2280439.839,
                "name": "Y",
                "position": 1,
                "stddev": 128.7117624,
                "variance": 16566.71779
              },
              {
                "average": 20.32137978,
                "count": 3363766,
                "maximum": 20.65937821,
                "minimum": 20.07937821,
                "name": "Z",
                "position": 2,
                "stddev": 0.05284861567,
                "variance": 0.002792976179
              },
              {
                "average": 12214.36217,
                "count": 3363766,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8438.870961,
                "variance": 71214543.1
              },
              {
                "average": 1,
                "count": 3363766,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3363766,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.504821679,
                "count": 3363766,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999768252,
                "variance": 0.2499768257
              },
              {
                "average": 0.0004628740525,
                "count": 3363766,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02150953132,
                "variance": 0.0004626599376
              },
              {
                "average": 7.323056955,
                "count": 3363766,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.094210956,
                "variance": 9.574141441
              },
              {
                "average": -1.812059949,
                "count": 3363766,
                "maximum": 16.44000053,
                "minimum": -19.79999924,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.13626415,
                "variance": 66.19879432
              },
              {
                "average": 0.4838332987,
                "count": 3363766,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997386437,
                "variance": 0.249738712
              },
              {
                "average": 662.0217551,
                "count": 3363766,
                "maximum": 706,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.61854842,
                "variance": 346.6503454
              },
              {
                "average": 222295366.9,
                "count": 3363766,
                "maximum": 222298249.1,
                "minimum": 222294485.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1192.542433,
                "variance": 1422157.456
              },
              {
                "average": 0.4838332987,
                "count": 3363766,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997386437,
                "variance": 0.249738712
              },
              {
                "average": 0,
                "count": 3363766,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3363766,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3363766,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06668210571,
                "count": 3363766,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2494706816,
                "variance": 0.06223562099
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131912.3076,
              2280439.839,
              20.07937821,
              -131419.4476,
              2280915.499,
              20.65937821
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131912.30764138937,
                    2280439.83931698,
                    20.079378213492518
                  ],
                  [
                    -131912.30764138937,
                    2280915.49931698,
                    20.079378213492518
                  ],
                  [
                    -131419.4476413894,
                    2280915.49931698,
                    20.659378213492516
                  ],
                  [
                    -131419.4476413894,
                    2280439.83931698,
                    20.659378213492516
                  ],
                  [
                    -131912.30764138937,
                    2280439.83931698,
                    20.079378213492518
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:29+00:00",
            "end_time": "2018-09-29T22:14:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0286.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.45600626428788,
              70.47611934266318,
              20.10719831405819
            ],
            [
              -157.4566566650362,
              70.48046154440777,
              20.10719831405819
            ],
            [
              -157.44372024965998,
              70.48069546390364,
              20.58719831405819
            ],
            [
              -157.44307227426643,
              70.4763532123127,
              20.58719831405819
            ],
            [
              -157.45600626428788,
              70.47611934266318,
              20.10719831405819
            ]
          ]
        ]
      },
      "bbox": [
        -157.4566567,
        70.47611934,
        20.10719831,
        -157.4430723,
        70.48069546,
        20.58719831
      ],
      "properties": {
        "datetime": "2018-09-29T23:22:16Z",
        "pc:count": 3590971,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131196.2551,
            "count": 3590971,
            "maximum": -130954.0832,
            "minimum": -131446.9032,
            "name": "X",
            "position": 0,
            "stddev": 135.6460115,
            "variance": 18399.84042
          },
          {
            "average": 2280643.37,
            "count": 3590971,
            "maximum": 2280887.248,
            "minimum": 2280411.548,
            "name": "Y",
            "position": 1,
            "stddev": 129.2511063,
            "variance": 16705.84848
          },
          {
            "average": 20.31630497,
            "count": 3590971,
            "maximum": 20.58719831,
            "minimum": 20.10719831,
            "name": "Z",
            "position": 2,
            "stddev": 0.04710415771,
            "variance": 0.002218801674
          },
          {
            "average": 12155.21016,
            "count": 3590971,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8578.476365,
            "variance": 73590256.75
          },
          {
            "average": 1,
            "count": 3590971,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3590971,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4988191216,
            "count": 3590971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999986751,
            "variance": 0.2499986751
          },
          {
            "average": 0.0004870548941,
            "count": 3590971,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02206394813,
            "variance": 0.0004868178072
          },
          {
            "average": 7.377247268,
            "count": 3590971,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.079572281,
            "variance": 9.483765434
          },
          {
            "average": 1.478522129,
            "count": 3590971,
            "maximum": 20.42399979,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.769099422,
            "variance": 76.89710468
          },
          {
            "average": 0.4879566,
            "count": 3590971,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998550051,
            "variance": 0.2498550261
          },
          {
            "average": 663.4630759,
            "count": 3590971,
            "maximum": 707,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.9123864,
            "variance": 396.5031323
          },
          {
            "average": 222295498.2,
            "count": 3590971,
            "maximum": 222298536.1,
            "minimum": 222294492,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1330.834496,
            "variance": 1771120.455
          },
          {
            "average": 0.4879566,
            "count": 3590971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998550051,
            "variance": 0.2498550261
          },
          {
            "average": 0,
            "count": 3590971,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3590971,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3590971,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08734963329,
            "count": 3590971,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2823467674,
            "variance": 0.07971969705
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131446.9032,
          2280411.548,
          20.10719831,
          -130954.0832,
          2280887.248,
          20.58719831
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131446.90318868667,
                2280411.548306676,
                20.10719831405819
              ],
              [
                -131446.90318868667,
                2280887.2483066763,
                20.10719831405819
              ],
              [
                -130954.08318868667,
                2280887.2483066763,
                20.58719831405819
              ],
              [
                -130954.08318868667,
                2280411.548306676,
                20.58719831405819
              ],
              [
                -131446.90318868667,
                2280411.548306676,
                20.10719831405819
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:22:16+00:00",
        "end_time": "2018-09-29T22:14:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0286.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0286.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0286.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0286.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4566567,
            70.47611934,
            20.10719831,
            -157.4430723,
            70.48069546,
            20.58719831
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.45600626428788,
                  70.47611934266318,
                  20.10719831405819
                ],
                [
                  -157.4566566650362,
                  70.48046154440777,
                  20.10719831405819
                ],
                [
                  -157.44372024965998,
                  70.48069546390364,
                  20.58719831405819
                ],
                [
                  -157.44307227426643,
                  70.4763532123127,
                  20.58719831405819
                ],
                [
                  -157.45600626428788,
                  70.47611934266318,
                  20.10719831405819
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0286.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0286.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:22:16Z",
            "pc:count": 3590971,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131196.2551,
                "count": 3590971,
                "maximum": -130954.0832,
                "minimum": -131446.9032,
                "name": "X",
                "position": 0,
                "stddev": 135.6460115,
                "variance": 18399.84042
              },
              {
                "average": 2280643.37,
                "count": 3590971,
                "maximum": 2280887.248,
                "minimum": 2280411.548,
                "name": "Y",
                "position": 1,
                "stddev": 129.2511063,
                "variance": 16705.84848
              },
              {
                "average": 20.31630497,
                "count": 3590971,
                "maximum": 20.58719831,
                "minimum": 20.10719831,
                "name": "Z",
                "position": 2,
                "stddev": 0.04710415771,
                "variance": 0.002218801674
              },
              {
                "average": 12155.21016,
                "count": 3590971,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8578.476365,
                "variance": 73590256.75
              },
              {
                "average": 1,
                "count": 3590971,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3590971,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4988191216,
                "count": 3590971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999986751,
                "variance": 0.2499986751
              },
              {
                "average": 0.0004870548941,
                "count": 3590971,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02206394813,
                "variance": 0.0004868178072
              },
              {
                "average": 7.377247268,
                "count": 3590971,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.079572281,
                "variance": 9.483765434
              },
              {
                "average": 1.478522129,
                "count": 3590971,
                "maximum": 20.42399979,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.769099422,
                "variance": 76.89710468
              },
              {
                "average": 0.4879566,
                "count": 3590971,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998550051,
                "variance": 0.2498550261
              },
              {
                "average": 663.4630759,
                "count": 3590971,
                "maximum": 707,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.9123864,
                "variance": 396.5031323
              },
              {
                "average": 222295498.2,
                "count": 3590971,
                "maximum": 222298536.1,
                "minimum": 222294492,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1330.834496,
                "variance": 1771120.455
              },
              {
                "average": 0.4879566,
                "count": 3590971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998550051,
                "variance": 0.2498550261
              },
              {
                "average": 0,
                "count": 3590971,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3590971,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3590971,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08734963329,
                "count": 3590971,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2823467674,
                "variance": 0.07971969705
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131446.9032,
              2280411.548,
              20.10719831,
              -130954.0832,
              2280887.248,
              20.58719831
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131446.90318868667,
                    2280411.548306676,
                    20.10719831405819
                  ],
                  [
                    -131446.90318868667,
                    2280887.2483066763,
                    20.10719831405819
                  ],
                  [
                    -130954.08318868667,
                    2280887.2483066763,
                    20.58719831405819
                  ],
                  [
                    -130954.08318868667,
                    2280411.548306676,
                    20.58719831405819
                  ],
                  [
                    -131446.90318868667,
                    2280411.548306676,
                    20.10719831405819
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:22:16+00:00",
            "end_time": "2018-09-29T22:14:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0312.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4191275466137,
              70.48010411366532,
              8.415577470041416
            ],
            [
              -157.4197709888981,
              70.48444562758104,
              8.415577470041416
            ],
            [
              -157.40683197042745,
              70.4846770537228,
              46.95557747004142
            ],
            [
              -157.406190954104,
              70.480335490489,
              46.95557747004142
            ],
            [
              -157.4191275466137,
              70.48010411366532,
              8.415577470041416
            ]
          ]
        ]
      },
      "bbox": [
        -157.419771,
        70.48010411,
        8.41557747,
        -157.406191,
        70.48467705,
        46.95557747
      ],
      "properties": {
        "datetime": "2018-09-29T23:32:06Z",
        "pc:count": 5101061,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129792.3287,
            "count": 5101061,
            "maximum": -129530.2371,
            "minimum": -130023.0571,
            "name": "X",
            "position": 0,
            "stddev": 129.0874865,
            "variance": 16663.57917
          },
          {
            "average": 2281004.814,
            "count": 5101061,
            "maximum": 2281249.918,
            "minimum": 2280774.318,
            "name": "Y",
            "position": 1,
            "stddev": 130.9340619,
            "variance": 17143.72857
          },
          {
            "average": 19.92194032,
            "count": 5101061,
            "maximum": 46.95557747,
            "minimum": 8.41557747,
            "name": "Z",
            "position": 2,
            "stddev": 8.441222288,
            "variance": 71.25423371
          },
          {
            "average": 38592.92232,
            "count": 5101061,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12851.38574,
            "variance": 165158115.4
          },
          {
            "average": 1.006654694,
            "count": 5101061,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08420165389,
            "variance": 0.007089918518
          },
          {
            "average": 1.013309192,
            "count": 5101061,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1207167961,
            "variance": 0.01457254485
          },
          {
            "average": 0.4987687856,
            "count": 5101061,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999985331,
            "variance": 0.2499985331
          },
          {
            "average": 0.0003354204155,
            "count": 5101061,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0183114165,
            "variance": 0.0003353079744
          },
          {
            "average": 2.222030476,
            "count": 5101061,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.516543705,
            "variance": 6.332992218
          },
          {
            "average": 2.221938854,
            "count": 5101061,
            "maximum": 20.43000031,
            "minimum": -15.91800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.96083311,
            "variance": 120.1398624
          },
          {
            "average": 0.5118476333,
            "count": 5101061,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998596629,
            "variance": 0.2498596826
          },
          {
            "average": 663.4015861,
            "count": 5101061,
            "maximum": 709,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.18590386,
            "variance": 492.2143299
          },
          {
            "average": 222295448.9,
            "count": 5101061,
            "maximum": 222299126.7,
            "minimum": 222294331.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1744.751073,
            "variance": 3044156.308
          },
          {
            "average": 0.5118476333,
            "count": 5101061,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998596629,
            "variance": 0.2498596826
          },
          {
            "average": 0,
            "count": 5101061,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5101061,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5101061,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2225444863,
            "count": 5101061,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4159548916,
            "variance": 0.1730184719
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130023.0571,
          2280774.318,
          8.41557747,
          -129530.2371,
          2281249.918,
          46.95557747
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130023.05710750181,
                2280774.317855198,
                8.415577470041416
              ],
              [
                -130023.05710750181,
                2281249.9178551976,
                8.415577470041416
              ],
              [
                -129530.2371075018,
                2281249.9178551976,
                46.95557747004142
              ],
              [
                -129530.2371075018,
                2280774.317855198,
                46.95557747004142
              ],
              [
                -130023.05710750181,
                2280774.317855198,
                8.415577470041416
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:32:06+00:00",
        "end_time": "2018-09-29T22:12:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0312.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0312.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0312.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0312.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.419771,
            70.48010411,
            8.41557747,
            -157.406191,
            70.48467705,
            46.95557747
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4191275466137,
                  70.48010411366532,
                  8.415577470041416
                ],
                [
                  -157.4197709888981,
                  70.48444562758104,
                  8.415577470041416
                ],
                [
                  -157.40683197042745,
                  70.4846770537228,
                  46.95557747004142
                ],
                [
                  -157.406190954104,
                  70.480335490489,
                  46.95557747004142
                ],
                [
                  -157.4191275466137,
                  70.48010411366532,
                  8.415577470041416
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0312.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0312.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:32:06Z",
            "pc:count": 5101061,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129792.3287,
                "count": 5101061,
                "maximum": -129530.2371,
                "minimum": -130023.0571,
                "name": "X",
                "position": 0,
                "stddev": 129.0874865,
                "variance": 16663.57917
              },
              {
                "average": 2281004.814,
                "count": 5101061,
                "maximum": 2281249.918,
                "minimum": 2280774.318,
                "name": "Y",
                "position": 1,
                "stddev": 130.9340619,
                "variance": 17143.72857
              },
              {
                "average": 19.92194032,
                "count": 5101061,
                "maximum": 46.95557747,
                "minimum": 8.41557747,
                "name": "Z",
                "position": 2,
                "stddev": 8.441222288,
                "variance": 71.25423371
              },
              {
                "average": 38592.92232,
                "count": 5101061,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12851.38574,
                "variance": 165158115.4
              },
              {
                "average": 1.006654694,
                "count": 5101061,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08420165389,
                "variance": 0.007089918518
              },
              {
                "average": 1.013309192,
                "count": 5101061,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1207167961,
                "variance": 0.01457254485
              },
              {
                "average": 0.4987687856,
                "count": 5101061,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999985331,
                "variance": 0.2499985331
              },
              {
                "average": 0.0003354204155,
                "count": 5101061,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0183114165,
                "variance": 0.0003353079744
              },
              {
                "average": 2.222030476,
                "count": 5101061,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.516543705,
                "variance": 6.332992218
              },
              {
                "average": 2.221938854,
                "count": 5101061,
                "maximum": 20.43000031,
                "minimum": -15.91800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.96083311,
                "variance": 120.1398624
              },
              {
                "average": 0.5118476333,
                "count": 5101061,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998596629,
                "variance": 0.2498596826
              },
              {
                "average": 663.4015861,
                "count": 5101061,
                "maximum": 709,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.18590386,
                "variance": 492.2143299
              },
              {
                "average": 222295448.9,
                "count": 5101061,
                "maximum": 222299126.7,
                "minimum": 222294331.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1744.751073,
                "variance": 3044156.308
              },
              {
                "average": 0.5118476333,
                "count": 5101061,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998596629,
                "variance": 0.2498596826
              },
              {
                "average": 0,
                "count": 5101061,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5101061,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5101061,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2225444863,
                "count": 5101061,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4159548916,
                "variance": 0.1730184719
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130023.0571,
              2280774.318,
              8.41557747,
              -129530.2371,
              2281249.918,
              46.95557747
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130023.05710750181,
                    2280774.317855198,
                    8.415577470041416
                  ],
                  [
                    -130023.05710750181,
                    2281249.9178551976,
                    8.415577470041416
                  ],
                  [
                    -129530.2371075018,
                    2281249.9178551976,
                    46.95557747004142
                  ],
                  [
                    -129530.2371075018,
                    2280774.317855198,
                    46.95557747004142
                  ],
                  [
                    -130023.05710750181,
                    2280774.317855198,
                    8.415577470041416
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:32:06+00:00",
            "end_time": "2018-09-29T22:12:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0287.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4437506896333,
              70.47608227547987,
              20.06392887991019
            ],
            [
              -157.4443987577312,
              70.48042433540164,
              20.06392887991019
            ],
            [
              -157.4314622394902,
              70.48065742451267,
              22.683928879910187
            ],
            [
              -157.43081659673044,
              70.47631531492324,
              22.683928879910187
            ],
            [
              -157.4437506896333,
              70.47608227547987,
              20.06392887991019
            ]
          ]
        ]
      },
      "bbox": [
        -157.4443988,
        70.47608228,
        20.06392888,
        -157.4308166,
        70.48065742,
        22.68392888
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:19Z",
        "pc:count": 4779525,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130727.398,
            "count": 4779525,
            "maximum": -130488.5794,
            "minimum": -130981.3994,
            "name": "X",
            "position": 0,
            "stddev": 136.5691908,
            "variance": 18651.14388
          },
          {
            "average": 2280621.89,
            "count": 4779525,
            "maximum": 2280858.964,
            "minimum": 2280383.284,
            "name": "Y",
            "position": 1,
            "stddev": 127.8128727,
            "variance": 16336.13044
          },
          {
            "average": 20.33604083,
            "count": 4779525,
            "maximum": 22.68392888,
            "minimum": 20.06392888,
            "name": "Z",
            "position": 2,
            "stddev": 0.0875236699,
            "variance": 0.007660392793
          },
          {
            "average": 15712.63393,
            "count": 4779525,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 11625.10615,
            "variance": 135143093.1
          },
          {
            "average": 1.000008578,
            "count": 4779525,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002928854129,
            "variance": 8.578186508e-06
          },
          {
            "average": 1.000017157,
            "count": 4779525,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004142007465,
            "variance": 1.715622584e-05
          },
          {
            "average": 0.4995119808,
            "count": 4779525,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998141,
            "variance": 0.2499998141
          },
          {
            "average": 0.0003305767833,
            "count": 4779525,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01817876705,
            "variance": 0.0003304675714
          },
          {
            "average": 7.458822582,
            "count": 4779525,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.112853685,
            "variance": 9.689858066
          },
          {
            "average": 0.9086149079,
            "count": 4779525,
            "maximum": 20.40600014,
            "minimum": -19.66799927,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.051623333,
            "variance": 64.8286383
          },
          {
            "average": 0.4893408864,
            "count": 4779525,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998864227,
            "variance": 0.2498864356
          },
          {
            "average": 662.5220937,
            "count": 4779525,
            "maximum": 708,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.10193257,
            "variance": 292.4760977
          },
          {
            "average": 222295645.4,
            "count": 4779525,
            "maximum": 222298839.5,
            "minimum": 222294498.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1224.045944,
            "variance": 1498288.473
          },
          {
            "average": 0.4893408864,
            "count": 4779525,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998864227,
            "variance": 0.2498864356
          },
          {
            "average": 0,
            "count": 4779525,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4779525,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4779525,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07534367955,
            "count": 4779525,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2639451157,
            "variance": 0.06966702408
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130981.3994,
          2280383.284,
          20.06392888,
          -130488.5794,
          2280858.964,
          22.68392888
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130981.39936420368,
                2280383.2839986295,
                20.06392887991019
              ],
              [
                -130981.39936420368,
                2280858.9639986292,
                20.06392887991019
              ],
              [
                -130488.57936420367,
                2280858.9639986292,
                22.683928879910187
              ],
              [
                -130488.57936420367,
                2280383.2839986295,
                22.683928879910187
              ],
              [
                -130981.39936420368,
                2280383.2839986295,
                20.06392887991019
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:19+00:00",
        "end_time": "2018-09-29T22:14:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0287.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0287.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0287.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0287.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4443988,
            70.47608228,
            20.06392888,
            -157.4308166,
            70.48065742,
            22.68392888
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4437506896333,
                  70.47608227547987,
                  20.06392887991019
                ],
                [
                  -157.4443987577312,
                  70.48042433540164,
                  20.06392887991019
                ],
                [
                  -157.4314622394902,
                  70.48065742451267,
                  22.683928879910187
                ],
                [
                  -157.43081659673044,
                  70.47631531492324,
                  22.683928879910187
                ],
                [
                  -157.4437506896333,
                  70.47608227547987,
                  20.06392887991019
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0287.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0287.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:19Z",
            "pc:count": 4779525,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130727.398,
                "count": 4779525,
                "maximum": -130488.5794,
                "minimum": -130981.3994,
                "name": "X",
                "position": 0,
                "stddev": 136.5691908,
                "variance": 18651.14388
              },
              {
                "average": 2280621.89,
                "count": 4779525,
                "maximum": 2280858.964,
                "minimum": 2280383.284,
                "name": "Y",
                "position": 1,
                "stddev": 127.8128727,
                "variance": 16336.13044
              },
              {
                "average": 20.33604083,
                "count": 4779525,
                "maximum": 22.68392888,
                "minimum": 20.06392888,
                "name": "Z",
                "position": 2,
                "stddev": 0.0875236699,
                "variance": 0.007660392793
              },
              {
                "average": 15712.63393,
                "count": 4779525,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 11625.10615,
                "variance": 135143093.1
              },
              {
                "average": 1.000008578,
                "count": 4779525,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002928854129,
                "variance": 8.578186508e-06
              },
              {
                "average": 1.000017157,
                "count": 4779525,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004142007465,
                "variance": 1.715622584e-05
              },
              {
                "average": 0.4995119808,
                "count": 4779525,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998141,
                "variance": 0.2499998141
              },
              {
                "average": 0.0003305767833,
                "count": 4779525,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01817876705,
                "variance": 0.0003304675714
              },
              {
                "average": 7.458822582,
                "count": 4779525,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.112853685,
                "variance": 9.689858066
              },
              {
                "average": 0.9086149079,
                "count": 4779525,
                "maximum": 20.40600014,
                "minimum": -19.66799927,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.051623333,
                "variance": 64.8286383
              },
              {
                "average": 0.4893408864,
                "count": 4779525,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998864227,
                "variance": 0.2498864356
              },
              {
                "average": 662.5220937,
                "count": 4779525,
                "maximum": 708,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.10193257,
                "variance": 292.4760977
              },
              {
                "average": 222295645.4,
                "count": 4779525,
                "maximum": 222298839.5,
                "minimum": 222294498.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1224.045944,
                "variance": 1498288.473
              },
              {
                "average": 0.4893408864,
                "count": 4779525,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998864227,
                "variance": 0.2498864356
              },
              {
                "average": 0,
                "count": 4779525,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4779525,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4779525,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07534367955,
                "count": 4779525,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2639451157,
                "variance": 0.06966702408
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130981.3994,
              2280383.284,
              20.06392888,
              -130488.5794,
              2280858.964,
              22.68392888
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130981.39936420368,
                    2280383.2839986295,
                    20.06392887991019
                  ],
                  [
                    -130981.39936420368,
                    2280858.9639986292,
                    20.06392887991019
                  ],
                  [
                    -130488.57936420367,
                    2280858.9639986292,
                    22.683928879910187
                  ],
                  [
                    -130488.57936420367,
                    2280383.2839986295,
                    22.683928879910187
                  ],
                  [
                    -130981.39936420368,
                    2280383.2839986295,
                    20.06392887991019
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:19+00:00",
            "end_time": "2018-09-29T22:14:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0313.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.40687170898372,
              70.48006426715988,
              8.41962694318535
            ],
            [
              -157.40751295364092,
              70.48440655159055,
              8.41962694318535
            ],
            [
              -157.39457330955244,
              70.48463715663442,
              17.87962694318535
            ],
            [
              -157.39393449144657,
              70.48029482305199,
              17.87962694318535
            ],
            [
              -157.40687170898372,
              70.48006426715988,
              8.41962694318535
            ]
          ]
        ]
      },
      "bbox": [
        -157.407513,
        70.48006427,
        8.419626943,
        -157.3939345,
        70.48463716,
        17.87962694
      ],
      "properties": {
        "datetime": "2018-09-29T23:36:48Z",
        "pc:count": 4780057,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129294.51,
            "count": 4780057,
            "maximum": -129064.7836,
            "minimum": -129557.6236,
            "name": "X",
            "position": 0,
            "stddev": 133.1211219,
            "variance": 17721.23308
          },
          {
            "average": 2280992.32,
            "count": 4780057,
            "maximum": 2281221.692,
            "minimum": 2280746.012,
            "name": "Y",
            "position": 1,
            "stddev": 129.8275234,
            "variance": 16855.18582
          },
          {
            "average": 14.15278532,
            "count": 4780057,
            "maximum": 17.87962694,
            "minimum": 8.419626943,
            "name": "Z",
            "position": 2,
            "stddev": 2.709931643,
            "variance": 7.34372951
          },
          {
            "average": 40103.36957,
            "count": 4780057,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 14504.69984,
            "variance": 210386317.3
          },
          {
            "average": 1.000006904,
            "count": 4780057,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002627477336,
            "variance": 6.90363715e-06
          },
          {
            "average": 1.000013807,
            "count": 4780057,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003715801256,
            "variance": 1.380717898e-05
          },
          {
            "average": 0.5058456416,
            "count": 4780057,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999658796,
            "variance": 0.2499658808
          },
          {
            "average": 0.0002644319932,
            "count": 4780057,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01625921659,
            "variance": 0.0002643621242
          },
          {
            "average": 1.99679439,
            "count": 4780057,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.341287817,
            "variance": 5.481628642
          },
          {
            "average": -1.6669518,
            "count": 4780057,
            "maximum": 16.31399918,
            "minimum": -19.72200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4985197,
            "variance": 110.2189158
          },
          {
            "average": 0.5123007947,
            "count": 4780057,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998487198,
            "variance": 0.2498487427
          },
          {
            "average": 662.3525494,
            "count": 4780057,
            "maximum": 710,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.60145091,
            "variance": 466.6226813
          },
          {
            "average": 222295389.9,
            "count": 4780057,
            "maximum": 222299408.9,
            "minimum": 222294325.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1765.641211,
            "variance": 3117488.885
          },
          {
            "average": 0.5123007947,
            "count": 4780057,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998487198,
            "variance": 0.2498487427
          },
          {
            "average": 0,
            "count": 4780057,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4780057,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4780057,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2016894359,
            "count": 4780057,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4012615619,
            "variance": 0.161010841
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129557.6236,
          2280746.012,
          8.419626943,
          -129064.7836,
          2281221.692,
          17.87962694
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129557.62359938619,
                2280746.0120965056,
                8.41962694318535
              ],
              [
                -129557.62359938619,
                2281221.6920965053,
                8.41962694318535
              ],
              [
                -129064.7835993862,
                2281221.6920965053,
                17.87962694318535
              ],
              [
                -129064.7835993862,
                2280746.0120965056,
                17.87962694318535
              ],
              [
                -129557.62359938619,
                2280746.0120965056,
                8.41962694318535
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:36:48+00:00",
        "end_time": "2018-09-29T22:12:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0313.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0313.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0313.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0313.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.407513,
            70.48006427,
            8.419626943,
            -157.3939345,
            70.48463716,
            17.87962694
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.40687170898372,
                  70.48006426715988,
                  8.41962694318535
                ],
                [
                  -157.40751295364092,
                  70.48440655159055,
                  8.41962694318535
                ],
                [
                  -157.39457330955244,
                  70.48463715663442,
                  17.87962694318535
                ],
                [
                  -157.39393449144657,
                  70.48029482305199,
                  17.87962694318535
                ],
                [
                  -157.40687170898372,
                  70.48006426715988,
                  8.41962694318535
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0313.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0313.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:36:48Z",
            "pc:count": 4780057,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129294.51,
                "count": 4780057,
                "maximum": -129064.7836,
                "minimum": -129557.6236,
                "name": "X",
                "position": 0,
                "stddev": 133.1211219,
                "variance": 17721.23308
              },
              {
                "average": 2280992.32,
                "count": 4780057,
                "maximum": 2281221.692,
                "minimum": 2280746.012,
                "name": "Y",
                "position": 1,
                "stddev": 129.8275234,
                "variance": 16855.18582
              },
              {
                "average": 14.15278532,
                "count": 4780057,
                "maximum": 17.87962694,
                "minimum": 8.419626943,
                "name": "Z",
                "position": 2,
                "stddev": 2.709931643,
                "variance": 7.34372951
              },
              {
                "average": 40103.36957,
                "count": 4780057,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 14504.69984,
                "variance": 210386317.3
              },
              {
                "average": 1.000006904,
                "count": 4780057,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002627477336,
                "variance": 6.90363715e-06
              },
              {
                "average": 1.000013807,
                "count": 4780057,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003715801256,
                "variance": 1.380717898e-05
              },
              {
                "average": 0.5058456416,
                "count": 4780057,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999658796,
                "variance": 0.2499658808
              },
              {
                "average": 0.0002644319932,
                "count": 4780057,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01625921659,
                "variance": 0.0002643621242
              },
              {
                "average": 1.99679439,
                "count": 4780057,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.341287817,
                "variance": 5.481628642
              },
              {
                "average": -1.6669518,
                "count": 4780057,
                "maximum": 16.31399918,
                "minimum": -19.72200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4985197,
                "variance": 110.2189158
              },
              {
                "average": 0.5123007947,
                "count": 4780057,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998487198,
                "variance": 0.2498487427
              },
              {
                "average": 662.3525494,
                "count": 4780057,
                "maximum": 710,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.60145091,
                "variance": 466.6226813
              },
              {
                "average": 222295389.9,
                "count": 4780057,
                "maximum": 222299408.9,
                "minimum": 222294325.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1765.641211,
                "variance": 3117488.885
              },
              {
                "average": 0.5123007947,
                "count": 4780057,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998487198,
                "variance": 0.2498487427
              },
              {
                "average": 0,
                "count": 4780057,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4780057,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4780057,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2016894359,
                "count": 4780057,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4012615619,
                "variance": 0.161010841
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129557.6236,
              2280746.012,
              8.419626943,
              -129064.7836,
              2281221.692,
              17.87962694
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129557.62359938619,
                    2280746.0120965056,
                    8.41962694318535
                  ],
                  [
                    -129557.62359938619,
                    2281221.6920965053,
                    8.41962694318535
                  ],
                  [
                    -129064.7835993862,
                    2281221.6920965053,
                    17.87962694318535
                  ],
                  [
                    -129064.7835993862,
                    2280746.0120965056,
                    17.87962694318535
                  ],
                  [
                    -129557.62359938619,
                    2280746.0120965056,
                    8.41962694318535
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:36:48+00:00",
            "end_time": "2018-09-29T22:12:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0308.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.46815263607235,
              70.48025375350451,
              20.079253046103126
            ],
            [
              -157.4688053551386,
              70.48459546994376,
              20.079253046103126
            ],
            [
              -157.45586517148263,
              70.48483024643261,
              20.679253046103128
            ],
            [
              -157.45521487853637,
              70.4804884799585,
              20.679253046103128
            ],
            [
              -157.46815263607235,
              70.48025375350451,
              20.079253046103126
            ]
          ]
        ]
      },
      "bbox": [
        -157.4688054,
        70.48025375,
        20.07925305,
        -157.4552149,
        70.48483025,
        20.67925305
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:22Z",
        "pc:count": 3352898,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131636.0629,
            "count": 3352898,
            "maximum": -131391.9724,
            "minimum": -131884.8524,
            "name": "X",
            "position": 0,
            "stddev": 135.3165213,
            "variance": 18310.56094
          },
          {
            "average": 2281128.352,
            "count": 3352898,
            "maximum": 2281362.978,
            "minimum": 2280887.338,
            "name": "Y",
            "position": 1,
            "stddev": 130.0346647,
            "variance": 16909.01401
          },
          {
            "average": 20.32574946,
            "count": 3352898,
            "maximum": 20.67925305,
            "minimum": 20.07925305,
            "name": "Z",
            "position": 2,
            "stddev": 0.05718186008,
            "variance": 0.003269765122
          },
          {
            "average": 12233.22842,
            "count": 3352898,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8679.252718,
            "variance": 75329427.75
          },
          {
            "average": 1,
            "count": 3352898,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3352898,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5071976541,
            "count": 3352898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999482656,
            "variance": 0.2499482683
          },
          {
            "average": 0.0004783921253,
            "count": 3352898,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02186694786,
            "variance": 0.0004781634088
          },
          {
            "average": 6.950895017,
            "count": 3352898,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.330327414,
            "variance": 11.09108069
          },
          {
            "average": -2.676539424,
            "count": 3352898,
            "maximum": 16.29000092,
            "minimum": -19.81200027,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.44034791,
            "variance": 71.23947284
          },
          {
            "average": 0.4904709299,
            "count": 3352898,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999092631,
            "variance": 0.2499092714
          },
          {
            "average": 660.5511623,
            "count": 3352898,
            "maximum": 706,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.08779297,
            "variance": 364.3438406
          },
          {
            "average": 222295131.6,
            "count": 3352898,
            "maximum": 222298242.5,
            "minimum": 222294357.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1285.335969,
            "variance": 1652088.553
          },
          {
            "average": 0.4904709299,
            "count": 3352898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999092631,
            "variance": 0.2499092714
          },
          {
            "average": 0,
            "count": 3352898,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3352898,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3352898,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08638527029,
            "count": 3352898,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2809321607,
            "variance": 0.07892287891
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131884.8524,
          2280887.338,
          20.07925305,
          -131391.9724,
          2281362.978,
          20.67925305
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131884.852356534,
                2280887.3380266475,
                20.079253046103126
              ],
              [
                -131884.852356534,
                2281362.978026647,
                20.079253046103126
              ],
              [
                -131391.97235653398,
                2281362.978026647,
                20.679253046103128
              ],
              [
                -131391.97235653398,
                2280887.3380266475,
                20.679253046103128
              ],
              [
                -131884.852356534,
                2280887.3380266475,
                20.079253046103126
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:22+00:00",
        "end_time": "2018-09-29T22:12:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0308.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0308.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0308.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0308.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4688054,
            70.48025375,
            20.07925305,
            -157.4552149,
            70.48483025,
            20.67925305
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.46815263607235,
                  70.48025375350451,
                  20.079253046103126
                ],
                [
                  -157.4688053551386,
                  70.48459546994376,
                  20.079253046103126
                ],
                [
                  -157.45586517148263,
                  70.48483024643261,
                  20.679253046103128
                ],
                [
                  -157.45521487853637,
                  70.4804884799585,
                  20.679253046103128
                ],
                [
                  -157.46815263607235,
                  70.48025375350451,
                  20.079253046103126
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0308.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0308.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:22Z",
            "pc:count": 3352898,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131636.0629,
                "count": 3352898,
                "maximum": -131391.9724,
                "minimum": -131884.8524,
                "name": "X",
                "position": 0,
                "stddev": 135.3165213,
                "variance": 18310.56094
              },
              {
                "average": 2281128.352,
                "count": 3352898,
                "maximum": 2281362.978,
                "minimum": 2280887.338,
                "name": "Y",
                "position": 1,
                "stddev": 130.0346647,
                "variance": 16909.01401
              },
              {
                "average": 20.32574946,
                "count": 3352898,
                "maximum": 20.67925305,
                "minimum": 20.07925305,
                "name": "Z",
                "position": 2,
                "stddev": 0.05718186008,
                "variance": 0.003269765122
              },
              {
                "average": 12233.22842,
                "count": 3352898,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8679.252718,
                "variance": 75329427.75
              },
              {
                "average": 1,
                "count": 3352898,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3352898,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5071976541,
                "count": 3352898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999482656,
                "variance": 0.2499482683
              },
              {
                "average": 0.0004783921253,
                "count": 3352898,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02186694786,
                "variance": 0.0004781634088
              },
              {
                "average": 6.950895017,
                "count": 3352898,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.330327414,
                "variance": 11.09108069
              },
              {
                "average": -2.676539424,
                "count": 3352898,
                "maximum": 16.29000092,
                "minimum": -19.81200027,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.44034791,
                "variance": 71.23947284
              },
              {
                "average": 0.4904709299,
                "count": 3352898,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999092631,
                "variance": 0.2499092714
              },
              {
                "average": 660.5511623,
                "count": 3352898,
                "maximum": 706,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.08779297,
                "variance": 364.3438406
              },
              {
                "average": 222295131.6,
                "count": 3352898,
                "maximum": 222298242.5,
                "minimum": 222294357.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1285.335969,
                "variance": 1652088.553
              },
              {
                "average": 0.4904709299,
                "count": 3352898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999092631,
                "variance": 0.2499092714
              },
              {
                "average": 0,
                "count": 3352898,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3352898,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3352898,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08638527029,
                "count": 3352898,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2809321607,
                "variance": 0.07892287891
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131884.8524,
              2280887.338,
              20.07925305,
              -131391.9724,
              2281362.978,
              20.67925305
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131884.852356534,
                    2280887.3380266475,
                    20.079253046103126
                  ],
                  [
                    -131884.852356534,
                    2281362.978026647,
                    20.079253046103126
                  ],
                  [
                    -131391.97235653398,
                    2281362.978026647,
                    20.679253046103128
                  ],
                  [
                    -131391.97235653398,
                    2280887.3380266475,
                    20.679253046103128
                  ],
                  [
                    -131884.852356534,
                    2280887.3380266475,
                    20.079253046103126
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:22+00:00",
            "end_time": "2018-09-29T22:12:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1398.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83693302579834,
              71.22739826512365,
              9.751953873977556
            ],
            [
              -156.8374827307481,
              71.23174547523482,
              9.751953873977556
            ],
            [
              -156.82403371410987,
              71.23193937389858,
              255.75195387397756
            ],
            [
              -156.82348660833733,
              71.22759212062394,
              255.75195387397756
            ],
            [
              -156.83693302579834,
              71.22739826512365,
              9.751953873977556
            ]
          ]
        ]
      },
      "bbox": [
        -156.8374827,
        71.22739827,
        9.751953874,
        -156.8234866,
        71.23193937,
        255.7519539
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:05Z",
        "pc:count": 4344369,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104165.9245,
            "count": 4344369,
            "maximum": -103919.1505,
            "minimum": -104414.6505,
            "name": "X",
            "position": 0,
            "stddev": 134.120521,
            "variance": 17988.31415
          },
          {
            "average": 2361473.781,
            "count": 4344369,
            "maximum": 2361702.124,
            "minimum": 2361228.304,
            "name": "Y",
            "position": 1,
            "stddev": 126.8843918,
            "variance": 16099.64888
          },
          {
            "average": 11.71744247,
            "count": 4344369,
            "maximum": 255.7519539,
            "minimum": 9.751953874,
            "name": "Z",
            "position": 2,
            "stddev": 0.7935804875,
            "variance": 0.6297699901
          },
          {
            "average": 40733.19764,
            "count": 4344369,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12253.23825,
            "variance": 150141847.6
          },
          {
            "average": 1,
            "count": 4344369,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.00000023,
            "count": 4344369,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0004797739316,
            "variance": 2.301830254e-07
          },
          {
            "average": 0.497097277,
            "count": 4344369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999916317,
            "variance": 0.2499916317
          },
          {
            "average": 0.0004578340376,
            "count": 4344369,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0213921605,
            "variance": 0.0004576245309
          },
          {
            "average": 1.222082655,
            "count": 4344369,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4158640557,
            "variance": 0.1729429128
          },
          {
            "average": 3.833459086,
            "count": 4344369,
            "maximum": 20.68199921,
            "minimum": -15.97200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.71719303,
            "variance": 114.8582265
          },
          {
            "average": 0.5385490965,
            "count": 4344369,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985118096,
            "variance": 0.2485140244
          },
          {
            "average": 428.0429317,
            "count": 4344369,
            "maximum": 468,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.39359308,
            "variance": 457.6858249
          },
          {
            "average": 220490209.6,
            "count": 4344369,
            "maximum": 220727485.9,
            "minimum": 220420226.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128257.6353,
            "variance": 16450021000.0
          },
          {
            "average": 0.5385490965,
            "count": 4344369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985118096,
            "variance": 0.2485140244
          },
          {
            "average": 0,
            "count": 4344369,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4344369,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4344369,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2564565763,
            "count": 4344369,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4366768195,
            "variance": 0.1906866447
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104414.6505,
          2361228.304,
          9.751953874,
          -103919.1505,
          2361702.124,
          255.7519539
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104414.65053553766,
                2361228.303661013,
                9.751953873977556
              ],
              [
                -104414.65053553766,
                2361702.1236610133,
                9.751953873977556
              ],
              [
                -103919.15053553766,
                2361702.1236610133,
                255.75195387397756
              ],
              [
                -103919.15053553766,
                2361228.303661013,
                255.75195387397756
              ],
              [
                -104414.65053553766,
                2361228.303661013,
                9.751953873977556
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:05+00:00",
        "end_time": "2018-09-08T05:37:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1398.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1398.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1398.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1398.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8374827,
            71.22739827,
            9.751953874,
            -156.8234866,
            71.23193937,
            255.7519539
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83693302579834,
                  71.22739826512365,
                  9.751953873977556
                ],
                [
                  -156.8374827307481,
                  71.23174547523482,
                  9.751953873977556
                ],
                [
                  -156.82403371410987,
                  71.23193937389858,
                  255.75195387397756
                ],
                [
                  -156.82348660833733,
                  71.22759212062394,
                  255.75195387397756
                ],
                [
                  -156.83693302579834,
                  71.22739826512365,
                  9.751953873977556
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1398.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1398.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:05Z",
            "pc:count": 4344369,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104165.9245,
                "count": 4344369,
                "maximum": -103919.1505,
                "minimum": -104414.6505,
                "name": "X",
                "position": 0,
                "stddev": 134.120521,
                "variance": 17988.31415
              },
              {
                "average": 2361473.781,
                "count": 4344369,
                "maximum": 2361702.124,
                "minimum": 2361228.304,
                "name": "Y",
                "position": 1,
                "stddev": 126.8843918,
                "variance": 16099.64888
              },
              {
                "average": 11.71744247,
                "count": 4344369,
                "maximum": 255.7519539,
                "minimum": 9.751953874,
                "name": "Z",
                "position": 2,
                "stddev": 0.7935804875,
                "variance": 0.6297699901
              },
              {
                "average": 40733.19764,
                "count": 4344369,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12253.23825,
                "variance": 150141847.6
              },
              {
                "average": 1,
                "count": 4344369,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.00000023,
                "count": 4344369,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0004797739316,
                "variance": 2.301830254e-07
              },
              {
                "average": 0.497097277,
                "count": 4344369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999916317,
                "variance": 0.2499916317
              },
              {
                "average": 0.0004578340376,
                "count": 4344369,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0213921605,
                "variance": 0.0004576245309
              },
              {
                "average": 1.222082655,
                "count": 4344369,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4158640557,
                "variance": 0.1729429128
              },
              {
                "average": 3.833459086,
                "count": 4344369,
                "maximum": 20.68199921,
                "minimum": -15.97200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.71719303,
                "variance": 114.8582265
              },
              {
                "average": 0.5385490965,
                "count": 4344369,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985118096,
                "variance": 0.2485140244
              },
              {
                "average": 428.0429317,
                "count": 4344369,
                "maximum": 468,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.39359308,
                "variance": 457.6858249
              },
              {
                "average": 220490209.6,
                "count": 4344369,
                "maximum": 220727485.9,
                "minimum": 220420226.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128257.6353,
                "variance": 16450021000.0
              },
              {
                "average": 0.5385490965,
                "count": 4344369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985118096,
                "variance": 0.2485140244
              },
              {
                "average": 0,
                "count": 4344369,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4344369,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4344369,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2564565763,
                "count": 4344369,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4366768195,
                "variance": 0.1906866447
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104414.6505,
              2361228.304,
              9.751953874,
              -103919.1505,
              2361702.124,
              255.7519539
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104414.65053553766,
                    2361228.303661013,
                    9.751953873977556
                  ],
                  [
                    -104414.65053553766,
                    2361702.1236610133,
                    9.751953873977556
                  ],
                  [
                    -103919.15053553766,
                    2361702.1236610133,
                    255.75195387397756
                  ],
                  [
                    -103919.15053553766,
                    2361228.303661013,
                    255.75195387397756
                  ],
                  [
                    -104414.65053553766,
                    2361228.303661013,
                    9.751953873977556
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:05+00:00",
            "end_time": "2018-09-08T05:37:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0220.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.41959261243036,
              70.46371102711385,
              16.41941790466988
            ],
            [
              -157.4202358749122,
              70.46805340620811,
              16.41941790466988
            ],
            [
              -157.40730918900016,
              70.46828478597858,
              30.45941790466988
            ],
            [
              -157.40666834915805,
              70.46394235761129,
              30.45941790466988
            ],
            [
              -157.41959261243036,
              70.46371102711385,
              16.41941790466988
            ]
          ]
        ]
      },
      "bbox": [
        -157.4202359,
        70.46371103,
        16.4194179,
        -157.4066683,
        70.46828479,
        30.4594179
      ],
      "properties": {
        "datetime": "2018-09-29T23:31:41Z",
        "pc:count": 4949912,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129880.3025,
            "count": 4949912,
            "maximum": -129640.3381,
            "minimum": -130133.0381,
            "name": "X",
            "position": 0,
            "stddev": 133.1239766,
            "variance": 17721.99313
          },
          {
            "average": 2279230.077,
            "count": 4949912,
            "maximum": 2279459.804,
            "minimum": 2278984.064,
            "name": "Y",
            "position": 1,
            "stddev": 125.9876664,
            "variance": 15872.8921
          },
          {
            "average": 22.41360259,
            "count": 4949912,
            "maximum": 30.4594179,
            "minimum": 16.4194179,
            "name": "Z",
            "position": 2,
            "stddev": 2.600742144,
            "variance": 6.763859699
          },
          {
            "average": 47175.06986,
            "count": 4949912,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8584.894579,
            "variance": 73700414.94
          },
          {
            "average": 1,
            "count": 4949912,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4949912,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.495406181,
            "count": 4949912,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999789469,
            "variance": 0.2499789473
          },
          {
            "average": 0.0003610165191,
            "count": 4949912,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01899700658,
            "variance": 0.0003608862591
          },
          {
            "average": 1.233138084,
            "count": 4949912,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4243013611,
            "variance": 0.1800316451
          },
          {
            "average": 3.954628035,
            "count": 4949912,
            "maximum": 20.40600014,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62249972,
            "variance": 112.8375004
          },
          {
            "average": 0.517202326,
            "count": 4949912,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997040428,
            "variance": 0.2497041304
          },
          {
            "average": 669.696075,
            "count": 4949912,
            "maximum": 709,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.56818015,
            "variance": 423.0500348
          },
          {
            "average": 222296403.3,
            "count": 4949912,
            "maximum": 222299101,
            "minimum": 222295361.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1368.626,
            "variance": 1873137.129
          },
          {
            "average": 0.517202326,
            "count": 4949912,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997040428,
            "variance": 0.2497041304
          },
          {
            "average": 0,
            "count": 4949912,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4949912,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4949912,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.251799628,
            "count": 4949912,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4340467871,
            "variance": 0.1883966134
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130133.0381,
          2278984.064,
          16.4194179,
          -129640.3381,
          2279459.804,
          30.4594179
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130133.03807790864,
                2278984.063955033,
                16.41941790466988
              ],
              [
                -130133.03807790864,
                2279459.8039550334,
                16.41941790466988
              ],
              [
                -129640.33807790863,
                2279459.8039550334,
                30.45941790466988
              ],
              [
                -129640.33807790863,
                2278984.063955033,
                30.45941790466988
              ],
              [
                -130133.03807790864,
                2278984.063955033,
                16.41941790466988
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:31:41+00:00",
        "end_time": "2018-09-29T22:29:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0220.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0220.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0220.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0220.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4202359,
            70.46371103,
            16.4194179,
            -157.4066683,
            70.46828479,
            30.4594179
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.41959261243036,
                  70.46371102711385,
                  16.41941790466988
                ],
                [
                  -157.4202358749122,
                  70.46805340620811,
                  16.41941790466988
                ],
                [
                  -157.40730918900016,
                  70.46828478597858,
                  30.45941790466988
                ],
                [
                  -157.40666834915805,
                  70.46394235761129,
                  30.45941790466988
                ],
                [
                  -157.41959261243036,
                  70.46371102711385,
                  16.41941790466988
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0220.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0220.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:31:41Z",
            "pc:count": 4949912,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129880.3025,
                "count": 4949912,
                "maximum": -129640.3381,
                "minimum": -130133.0381,
                "name": "X",
                "position": 0,
                "stddev": 133.1239766,
                "variance": 17721.99313
              },
              {
                "average": 2279230.077,
                "count": 4949912,
                "maximum": 2279459.804,
                "minimum": 2278984.064,
                "name": "Y",
                "position": 1,
                "stddev": 125.9876664,
                "variance": 15872.8921
              },
              {
                "average": 22.41360259,
                "count": 4949912,
                "maximum": 30.4594179,
                "minimum": 16.4194179,
                "name": "Z",
                "position": 2,
                "stddev": 2.600742144,
                "variance": 6.763859699
              },
              {
                "average": 47175.06986,
                "count": 4949912,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8584.894579,
                "variance": 73700414.94
              },
              {
                "average": 1,
                "count": 4949912,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4949912,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.495406181,
                "count": 4949912,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999789469,
                "variance": 0.2499789473
              },
              {
                "average": 0.0003610165191,
                "count": 4949912,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01899700658,
                "variance": 0.0003608862591
              },
              {
                "average": 1.233138084,
                "count": 4949912,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4243013611,
                "variance": 0.1800316451
              },
              {
                "average": 3.954628035,
                "count": 4949912,
                "maximum": 20.40600014,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62249972,
                "variance": 112.8375004
              },
              {
                "average": 0.517202326,
                "count": 4949912,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997040428,
                "variance": 0.2497041304
              },
              {
                "average": 669.696075,
                "count": 4949912,
                "maximum": 709,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.56818015,
                "variance": 423.0500348
              },
              {
                "average": 222296403.3,
                "count": 4949912,
                "maximum": 222299101,
                "minimum": 222295361.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1368.626,
                "variance": 1873137.129
              },
              {
                "average": 0.517202326,
                "count": 4949912,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997040428,
                "variance": 0.2497041304
              },
              {
                "average": 0,
                "count": 4949912,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4949912,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4949912,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.251799628,
                "count": 4949912,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4340467871,
                "variance": 0.1883966134
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130133.0381,
              2278984.064,
              16.4194179,
              -129640.3381,
              2279459.804,
              30.4594179
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130133.03807790864,
                    2278984.063955033,
                    16.41941790466988
                  ],
                  [
                    -130133.03807790864,
                    2279459.8039550334,
                    16.41941790466988
                  ],
                  [
                    -129640.33807790863,
                    2279459.8039550334,
                    30.45941790466988
                  ],
                  [
                    -129640.33807790863,
                    2278984.063955033,
                    30.45941790466988
                  ],
                  [
                    -130133.03807790864,
                    2278984.063955033,
                    16.41941790466988
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:31:41+00:00",
            "end_time": "2018-09-29T22:29:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0314.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.3946164167775,
              70.48002350124582,
              15.141266267053863
            ],
            [
              -157.39525543622574,
              70.48436637345658,
              15.141266267053863
            ],
            [
              -157.38231516757534,
              70.48459615736127,
              18.941266267053862
            ],
            [
              -157.38167857516632,
              70.48025323616724,
              18.941266267053862
            ],
            [
              -157.3946164167775,
              70.48002350124582,
              15.141266267053863
            ]
          ]
        ]
      },
      "bbox": [
        -157.3952554,
        70.4800235,
        15.14126627,
        -157.3816786,
        70.48459616,
        18.94126627
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:35Z",
        "pc:count": 5166726,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128848.5681,
            "count": 5166726,
            "maximum": -128599.3499,
            "minimum": -129092.2099,
            "name": "X",
            "position": 0,
            "stddev": 136.5969992,
            "variance": 18658.74019
          },
          {
            "average": 2280957.703,
            "count": 5166726,
            "maximum": 2281193.433,
            "minimum": 2280717.693,
            "name": "Y",
            "position": 1,
            "stddev": 131.2297752,
            "variance": 17221.25391
          },
          {
            "average": 17.44671831,
            "count": 5166726,
            "maximum": 18.94126627,
            "minimum": 15.14126627,
            "name": "Z",
            "position": 2,
            "stddev": 0.4435825821,
            "variance": 0.1967655072
          },
          {
            "average": 41870.21398,
            "count": 5166726,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 14589.24381,
            "variance": 212846034.8
          },
          {
            "average": 1,
            "count": 5166726,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5166726,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5046942687,
            "count": 5166726,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999780117,
            "variance": 0.2499780122
          },
          {
            "average": 0.0002974804547,
            "count": 5166726,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01724505778,
            "variance": 0.0002973920177
          },
          {
            "average": 1.345439646,
            "count": 5166726,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.029696814,
            "variance": 1.060275529
          },
          {
            "average": -1.277572325,
            "count": 5166726,
            "maximum": 20.5739994,
            "minimum": -19.81200027,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.52844834,
            "variance": 110.8482245
          },
          {
            "average": 0.5146338319,
            "count": 5166726,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997858534,
            "variance": 0.2497858993
          },
          {
            "average": 661.0880451,
            "count": 5166726,
            "maximum": 711,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.5233785,
            "variance": 421.2090651
          },
          {
            "average": 222295301.2,
            "count": 5166726,
            "maximum": 222299695.5,
            "minimum": 222294318.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1711.322872,
            "variance": 2928625.973
          },
          {
            "average": 0.5146338319,
            "count": 5166726,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997858534,
            "variance": 0.2497858993
          },
          {
            "average": 0,
            "count": 5166726,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5166726,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5166726,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2242303927,
            "count": 5166726,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4170745226,
            "variance": 0.1739511574
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129092.2099,
          2280717.693,
          15.14126627,
          -128599.3499,
          2281193.433,
          18.94126627
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129092.20993495866,
                2280717.6927948757,
                15.141266267053863
              ],
              [
                -129092.20993495866,
                2281193.432794876,
                15.141266267053863
              ],
              [
                -128599.34993495868,
                2281193.432794876,
                18.941266267053862
              ],
              [
                -128599.34993495868,
                2280717.6927948757,
                18.941266267053862
              ],
              [
                -129092.20993495866,
                2280717.6927948757,
                15.141266267053863
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:35+00:00",
        "end_time": "2018-09-29T22:11:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0314.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0314.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0314.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0314.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3952554,
            70.4800235,
            15.14126627,
            -157.3816786,
            70.48459616,
            18.94126627
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.3946164167775,
                  70.48002350124582,
                  15.141266267053863
                ],
                [
                  -157.39525543622574,
                  70.48436637345658,
                  15.141266267053863
                ],
                [
                  -157.38231516757534,
                  70.48459615736127,
                  18.941266267053862
                ],
                [
                  -157.38167857516632,
                  70.48025323616724,
                  18.941266267053862
                ],
                [
                  -157.3946164167775,
                  70.48002350124582,
                  15.141266267053863
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0314.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0314.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:35Z",
            "pc:count": 5166726,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128848.5681,
                "count": 5166726,
                "maximum": -128599.3499,
                "minimum": -129092.2099,
                "name": "X",
                "position": 0,
                "stddev": 136.5969992,
                "variance": 18658.74019
              },
              {
                "average": 2280957.703,
                "count": 5166726,
                "maximum": 2281193.433,
                "minimum": 2280717.693,
                "name": "Y",
                "position": 1,
                "stddev": 131.2297752,
                "variance": 17221.25391
              },
              {
                "average": 17.44671831,
                "count": 5166726,
                "maximum": 18.94126627,
                "minimum": 15.14126627,
                "name": "Z",
                "position": 2,
                "stddev": 0.4435825821,
                "variance": 0.1967655072
              },
              {
                "average": 41870.21398,
                "count": 5166726,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 14589.24381,
                "variance": 212846034.8
              },
              {
                "average": 1,
                "count": 5166726,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5166726,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5046942687,
                "count": 5166726,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999780117,
                "variance": 0.2499780122
              },
              {
                "average": 0.0002974804547,
                "count": 5166726,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01724505778,
                "variance": 0.0002973920177
              },
              {
                "average": 1.345439646,
                "count": 5166726,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.029696814,
                "variance": 1.060275529
              },
              {
                "average": -1.277572325,
                "count": 5166726,
                "maximum": 20.5739994,
                "minimum": -19.81200027,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.52844834,
                "variance": 110.8482245
              },
              {
                "average": 0.5146338319,
                "count": 5166726,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997858534,
                "variance": 0.2497858993
              },
              {
                "average": 661.0880451,
                "count": 5166726,
                "maximum": 711,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.5233785,
                "variance": 421.2090651
              },
              {
                "average": 222295301.2,
                "count": 5166726,
                "maximum": 222299695.5,
                "minimum": 222294318.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1711.322872,
                "variance": 2928625.973
              },
              {
                "average": 0.5146338319,
                "count": 5166726,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997858534,
                "variance": 0.2497858993
              },
              {
                "average": 0,
                "count": 5166726,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5166726,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5166726,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2242303927,
                "count": 5166726,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4170745226,
                "variance": 0.1739511574
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129092.2099,
              2280717.693,
              15.14126627,
              -128599.3499,
              2281193.433,
              18.94126627
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129092.20993495866,
                    2280717.6927948757,
                    15.141266267053863
                  ],
                  [
                    -129092.20993495866,
                    2281193.432794876,
                    15.141266267053863
                  ],
                  [
                    -128599.34993495868,
                    2281193.432794876,
                    18.941266267053862
                  ],
                  [
                    -128599.34993495868,
                    2280717.6927948757,
                    18.941266267053862
                  ],
                  [
                    -129092.20993495866,
                    2280717.6927948757,
                    15.141266267053863
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:35+00:00",
            "end_time": "2018-09-29T22:11:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0309.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.45589496205363,
              70.48021782833194,
              20.101744389887642
            ],
            [
              -157.45654542996448,
              70.48455995082458,
              20.101744389887642
            ],
            [
              -157.44360671729387,
              70.48479386825515,
              880.6617443898876
            ],
            [
              -157.44295867549764,
              70.48045169590618,
              880.6617443898876
            ],
            [
              -157.45589496205363,
              70.48021782833194,
              20.101744389887642
            ]
          ]
        ]
      },
      "bbox": [
        -157.4565454,
        70.48021783,
        20.10174439,
        -157.4429587,
        70.48479387,
        880.6617444
      ],
      "properties": {
        "datetime": "2018-09-29T23:22:22Z",
        "pc:count": 3527028,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131169.0134,
            "count": 3527028,
            "maximum": -130926.5308,
            "minimum": -131419.3508,
            "name": "X",
            "position": 0,
            "stddev": 135.8973568,
            "variance": 18468.09159
          },
          {
            "average": 2281098.001,
            "count": 3527028,
            "maximum": 2281334.794,
            "minimum": 2280859.114,
            "name": "Y",
            "position": 1,
            "stddev": 130.364031,
            "variance": 16994.78059
          },
          {
            "average": 20.32227337,
            "count": 3527028,
            "maximum": 880.6617444,
            "minimum": 20.10174439,
            "name": "Z",
            "position": 2,
            "stddev": 0.4608168156,
            "variance": 0.2123521375
          },
          {
            "average": 11799.34643,
            "count": 3527028,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8375.227236,
            "variance": 70144431.25
          },
          {
            "average": 1,
            "count": 3527028,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3527028,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5012942908,
            "count": 3527028,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983957,
            "variance": 0.2499983957
          },
          {
            "average": 0.0005063753392,
            "count": 3527028,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02249709018,
            "variance": 0.0005061190668
          },
          {
            "average": 7.178473207,
            "count": 3527028,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.211683386,
            "variance": 10.31491017
          },
          {
            "average": 0.4420444355,
            "count": 3527028,
            "maximum": 20.39999962,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.198276523,
            "variance": 84.608291
          },
          {
            "average": 0.4929603621,
            "count": 3527028,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999505119,
            "variance": 0.2499505144
          },
          {
            "average": 661.9849304,
            "count": 3527028,
            "maximum": 707,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.41857263,
            "variance": 416.9181081
          },
          {
            "average": 222295260.8,
            "count": 3527028,
            "maximum": 222298542.6,
            "minimum": 222294351.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1428.112996,
            "variance": 2039506.73
          },
          {
            "average": 0.4929603621,
            "count": 3527028,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999505119,
            "variance": 0.2499505144
          },
          {
            "average": 0,
            "count": 3527028,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3527028,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3527028,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09193094016,
            "count": 3527028,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2889284792,
            "variance": 0.08347966607
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131419.3508,
          2280859.114,
          20.10174439,
          -130926.5308,
          2281334.794,
          880.6617444
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131419.35080271057,
                2280859.113642232,
                20.101744389887642
              ],
              [
                -131419.35080271057,
                2281334.7936422317,
                20.101744389887642
              ],
              [
                -130926.53080271056,
                2281334.7936422317,
                880.6617443898876
              ],
              [
                -130926.53080271056,
                2280859.113642232,
                880.6617443898876
              ],
              [
                -131419.35080271057,
                2280859.113642232,
                20.101744389887642
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:22:22+00:00",
        "end_time": "2018-09-29T22:12:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0309.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0309.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0309.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0309.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4565454,
            70.48021783,
            20.10174439,
            -157.4429587,
            70.48479387,
            880.6617444
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.45589496205363,
                  70.48021782833194,
                  20.101744389887642
                ],
                [
                  -157.45654542996448,
                  70.48455995082458,
                  20.101744389887642
                ],
                [
                  -157.44360671729387,
                  70.48479386825515,
                  880.6617443898876
                ],
                [
                  -157.44295867549764,
                  70.48045169590618,
                  880.6617443898876
                ],
                [
                  -157.45589496205363,
                  70.48021782833194,
                  20.101744389887642
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0309.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0309.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:22:22Z",
            "pc:count": 3527028,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131169.0134,
                "count": 3527028,
                "maximum": -130926.5308,
                "minimum": -131419.3508,
                "name": "X",
                "position": 0,
                "stddev": 135.8973568,
                "variance": 18468.09159
              },
              {
                "average": 2281098.001,
                "count": 3527028,
                "maximum": 2281334.794,
                "minimum": 2280859.114,
                "name": "Y",
                "position": 1,
                "stddev": 130.364031,
                "variance": 16994.78059
              },
              {
                "average": 20.32227337,
                "count": 3527028,
                "maximum": 880.6617444,
                "minimum": 20.10174439,
                "name": "Z",
                "position": 2,
                "stddev": 0.4608168156,
                "variance": 0.2123521375
              },
              {
                "average": 11799.34643,
                "count": 3527028,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8375.227236,
                "variance": 70144431.25
              },
              {
                "average": 1,
                "count": 3527028,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3527028,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5012942908,
                "count": 3527028,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983957,
                "variance": 0.2499983957
              },
              {
                "average": 0.0005063753392,
                "count": 3527028,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02249709018,
                "variance": 0.0005061190668
              },
              {
                "average": 7.178473207,
                "count": 3527028,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.211683386,
                "variance": 10.31491017
              },
              {
                "average": 0.4420444355,
                "count": 3527028,
                "maximum": 20.39999962,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.198276523,
                "variance": 84.608291
              },
              {
                "average": 0.4929603621,
                "count": 3527028,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999505119,
                "variance": 0.2499505144
              },
              {
                "average": 661.9849304,
                "count": 3527028,
                "maximum": 707,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.41857263,
                "variance": 416.9181081
              },
              {
                "average": 222295260.8,
                "count": 3527028,
                "maximum": 222298542.6,
                "minimum": 222294351.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1428.112996,
                "variance": 2039506.73
              },
              {
                "average": 0.4929603621,
                "count": 3527028,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999505119,
                "variance": 0.2499505144
              },
              {
                "average": 0,
                "count": 3527028,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3527028,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3527028,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09193094016,
                "count": 3527028,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2889284792,
                "variance": 0.08347966607
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131419.3508,
              2280859.114,
              20.10174439,
              -130926.5308,
              2281334.794,
              880.6617444
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131419.35080271057,
                    2280859.113642232,
                    20.101744389887642
                  ],
                  [
                    -131419.35080271057,
                    2281334.7936422317,
                    20.101744389887642
                  ],
                  [
                    -130926.53080271056,
                    2281334.7936422317,
                    880.6617443898876
                  ],
                  [
                    -130926.53080271056,
                    2280859.113642232,
                    880.6617443898876
                  ],
                  [
                    -131419.35080271057,
                    2280859.113642232,
                    20.101744389887642
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:22:22+00:00",
            "end_time": "2018-09-29T22:12:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1456.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81123788063474,
              71.23133686861014,
              11.546076156236156
            ],
            [
              -156.81178263627797,
              71.23568371405223,
              11.546076156236156
            ],
            [
              -156.79833049645052,
              71.23587586608593,
              13.306076156236157
            ],
            [
              -156.79778834084328,
              71.2315289778631,
              13.306076156236157
            ],
            [
              -156.81123788063474,
              71.23133686861014,
              11.546076156236156
            ]
          ]
        ]
      },
      "bbox": [
        -156.8117826,
        71.23133687,
        11.54607616,
        -156.7977883,
        71.23587587,
        13.30607616
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:18Z",
        "pc:count": 3559942,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103207.8031,
            "count": 3559942,
            "maximum": -102955.8262,
            "minimum": -103451.3462,
            "name": "X",
            "position": 0,
            "stddev": 135.8649359,
            "variance": 18459.28082
          },
          {
            "average": 2361854.752,
            "count": 3559942,
            "maximum": 2362090.356,
            "minimum": 2361616.596,
            "name": "Y",
            "position": 1,
            "stddev": 135.146778,
            "variance": 18264.6516
          },
          {
            "average": 12.04220532,
            "count": 3559942,
            "maximum": 13.30607616,
            "minimum": 11.54607616,
            "name": "Z",
            "position": 2,
            "stddev": 0.2284007842,
            "variance": 0.05216691822
          },
          {
            "average": 34260.7038,
            "count": 3559942,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13668.11254,
            "variance": 186817300.5
          },
          {
            "average": 1,
            "count": 3559942,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3559942,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4994831376,
            "count": 3559942,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998031,
            "variance": 0.2499998031
          },
          {
            "average": 0.0005862455062,
            "count": 3559942,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02420541235,
            "variance": 0.000585901987
          },
          {
            "average": 1.27326316,
            "count": 3559942,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6321049858,
            "variance": 0.3995567131
          },
          {
            "average": -0.1746184417,
            "count": 3559942,
            "maximum": 20.57999992,
            "minimum": -19.81800079,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.76183389,
            "variance": 115.8170688
          },
          {
            "average": 0.4723346616,
            "count": 3559942,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992341125,
            "variance": 0.2492346991
          },
          {
            "average": 429.1089346,
            "count": 3559942,
            "maximum": 468,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.19218281,
            "variance": 449.1086122
          },
          {
            "average": 220493893.3,
            "count": 3559942,
            "maximum": 220727498.3,
            "minimum": 220420214.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 130161.2632,
            "variance": 16941954430.0
          },
          {
            "average": 0.4723346616,
            "count": 3559942,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992341125,
            "variance": 0.2492346991
          },
          {
            "average": 0,
            "count": 3559942,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3559942,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3559942,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2376783105,
            "count": 3559942,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4256611118,
            "variance": 0.1811873821
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103451.3462,
          2361616.596,
          11.54607616,
          -102955.8262,
          2362090.356,
          13.30607616
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103451.34619712824,
                2361616.5963537414,
                11.546076156236156
              ],
              [
                -103451.34619712824,
                2362090.356353741,
                11.546076156236156
              ],
              [
                -102955.82619712825,
                2362090.356353741,
                13.306076156236157
              ],
              [
                -102955.82619712825,
                2361616.5963537414,
                13.306076156236157
              ],
              [
                -103451.34619712824,
                2361616.5963537414,
                11.546076156236156
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:18+00:00",
        "end_time": "2018-09-08T05:36:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1456.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1456.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1456.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1456.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8117826,
            71.23133687,
            11.54607616,
            -156.7977883,
            71.23587587,
            13.30607616
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81123788063474,
                  71.23133686861014,
                  11.546076156236156
                ],
                [
                  -156.81178263627797,
                  71.23568371405223,
                  11.546076156236156
                ],
                [
                  -156.79833049645052,
                  71.23587586608593,
                  13.306076156236157
                ],
                [
                  -156.79778834084328,
                  71.2315289778631,
                  13.306076156236157
                ],
                [
                  -156.81123788063474,
                  71.23133686861014,
                  11.546076156236156
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1456.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1456.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:18Z",
            "pc:count": 3559942,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103207.8031,
                "count": 3559942,
                "maximum": -102955.8262,
                "minimum": -103451.3462,
                "name": "X",
                "position": 0,
                "stddev": 135.8649359,
                "variance": 18459.28082
              },
              {
                "average": 2361854.752,
                "count": 3559942,
                "maximum": 2362090.356,
                "minimum": 2361616.596,
                "name": "Y",
                "position": 1,
                "stddev": 135.146778,
                "variance": 18264.6516
              },
              {
                "average": 12.04220532,
                "count": 3559942,
                "maximum": 13.30607616,
                "minimum": 11.54607616,
                "name": "Z",
                "position": 2,
                "stddev": 0.2284007842,
                "variance": 0.05216691822
              },
              {
                "average": 34260.7038,
                "count": 3559942,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13668.11254,
                "variance": 186817300.5
              },
              {
                "average": 1,
                "count": 3559942,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3559942,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4994831376,
                "count": 3559942,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998031,
                "variance": 0.2499998031
              },
              {
                "average": 0.0005862455062,
                "count": 3559942,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02420541235,
                "variance": 0.000585901987
              },
              {
                "average": 1.27326316,
                "count": 3559942,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6321049858,
                "variance": 0.3995567131
              },
              {
                "average": -0.1746184417,
                "count": 3559942,
                "maximum": 20.57999992,
                "minimum": -19.81800079,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.76183389,
                "variance": 115.8170688
              },
              {
                "average": 0.4723346616,
                "count": 3559942,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992341125,
                "variance": 0.2492346991
              },
              {
                "average": 429.1089346,
                "count": 3559942,
                "maximum": 468,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.19218281,
                "variance": 449.1086122
              },
              {
                "average": 220493893.3,
                "count": 3559942,
                "maximum": 220727498.3,
                "minimum": 220420214.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 130161.2632,
                "variance": 16941954430.0
              },
              {
                "average": 0.4723346616,
                "count": 3559942,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992341125,
                "variance": 0.2492346991
              },
              {
                "average": 0,
                "count": 3559942,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3559942,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3559942,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2376783105,
                "count": 3559942,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4256611118,
                "variance": 0.1811873821
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103451.3462,
              2361616.596,
              11.54607616,
              -102955.8262,
              2362090.356,
              13.30607616
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103451.34619712824,
                    2361616.5963537414,
                    11.546076156236156
                  ],
                  [
                    -103451.34619712824,
                    2362090.356353741,
                    11.546076156236156
                  ],
                  [
                    -102955.82619712825,
                    2362090.356353741,
                    13.306076156236157
                  ],
                  [
                    -102955.82619712825,
                    2361616.5963537414,
                    13.306076156236157
                  ],
                  [
                    -103451.34619712824,
                    2361616.5963537414,
                    11.546076156236156
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:18+00:00",
            "end_time": "2018-09-08T05:36:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0221.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4073498123087,
              70.46367160022466,
              10.712955723581082
            ],
            [
              -157.40799074576825,
              70.46801383696524,
              10.712955723581082
            ],
            [
              -157.39506186086746,
              70.46824442481561,
              23.352955723581083
            ],
            [
              -157.39442335042278,
              70.46390213897234,
              23.352955723581083
            ],
            [
              -157.4073498123087,
              70.46367160022466,
              10.712955723581082
            ]
          ]
        ]
      },
      "bbox": [
        -157.4079907,
        70.4636716,
        10.71295572,
        -157.3944234,
        70.46824442,
        23.35295572
      ],
      "properties": {
        "datetime": "2018-09-29T23:37:14Z",
        "pc:count": 4956445,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129412.8122,
            "count": 4956445,
            "maximum": -129174.9876,
            "minimum": -129667.7676,
            "name": "X",
            "position": 0,
            "stddev": 134.1370282,
            "variance": 17992.74235
          },
          {
            "average": 2279202.099,
            "count": 4956445,
            "maximum": 2279431.529,
            "minimum": 2278955.809,
            "name": "Y",
            "position": 1,
            "stddev": 124.8777607,
            "variance": 15594.45512
          },
          {
            "average": 18.65985518,
            "count": 4956445,
            "maximum": 23.35295572,
            "minimum": 10.71295572,
            "name": "Z",
            "position": 2,
            "stddev": 1.910689645,
            "variance": 3.650734919
          },
          {
            "average": 46454.89746,
            "count": 4956445,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 9826.002324,
            "variance": 96550321.68
          },
          {
            "average": 1,
            "count": 4956445,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4956445,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5031834309,
            "count": 4956445,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999899161,
            "variance": 0.2499899162
          },
          {
            "average": 0.0002679339728,
            "count": 4956445,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01636649743,
            "variance": 0.0002678622383
          },
          {
            "average": 1.283102909,
            "count": 4956445,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6675764557,
            "variance": 0.4456583242
          },
          {
            "average": -0.4291470596,
            "count": 4956445,
            "maximum": 16.44000053,
            "minimum": -19.8239994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50660305,
            "variance": 110.3887076
          },
          {
            "average": 0.5066447827,
            "count": 4956445,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999558953,
            "variance": 0.2499558973
          },
          {
            "average": 667.1818136,
            "count": 4956445,
            "maximum": 710,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.7925528,
            "variance": 353.1600409
          },
          {
            "average": 222296269.9,
            "count": 4956445,
            "maximum": 222299434.6,
            "minimum": 222295355.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1319.181202,
            "variance": 1740239.044
          },
          {
            "average": 0.5066447827,
            "count": 4956445,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999558953,
            "variance": 0.2499558973
          },
          {
            "average": 0,
            "count": 4956445,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4956445,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4956445,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2200288715,
            "count": 4956445,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4142658589,
            "variance": 0.1716162018
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129667.7676,
          2278955.809,
          10.71295572,
          -129174.9876,
          2279431.529,
          23.35295572
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129667.7675934083,
                2278955.8088268335,
                10.712955723581082
              ],
              [
                -129667.7675934083,
                2279431.5288268332,
                10.712955723581082
              ],
              [
                -129174.9875934083,
                2279431.5288268332,
                23.352955723581083
              ],
              [
                -129174.9875934083,
                2278955.8088268335,
                23.352955723581083
              ],
              [
                -129667.7675934083,
                2278955.8088268335,
                10.712955723581082
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:37:14+00:00",
        "end_time": "2018-09-29T22:29:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0221.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0221.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0221.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0221.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4079907,
            70.4636716,
            10.71295572,
            -157.3944234,
            70.46824442,
            23.35295572
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4073498123087,
                  70.46367160022466,
                  10.712955723581082
                ],
                [
                  -157.40799074576825,
                  70.46801383696524,
                  10.712955723581082
                ],
                [
                  -157.39506186086746,
                  70.46824442481561,
                  23.352955723581083
                ],
                [
                  -157.39442335042278,
                  70.46390213897234,
                  23.352955723581083
                ],
                [
                  -157.4073498123087,
                  70.46367160022466,
                  10.712955723581082
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0221.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0221.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:37:14Z",
            "pc:count": 4956445,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129412.8122,
                "count": 4956445,
                "maximum": -129174.9876,
                "minimum": -129667.7676,
                "name": "X",
                "position": 0,
                "stddev": 134.1370282,
                "variance": 17992.74235
              },
              {
                "average": 2279202.099,
                "count": 4956445,
                "maximum": 2279431.529,
                "minimum": 2278955.809,
                "name": "Y",
                "position": 1,
                "stddev": 124.8777607,
                "variance": 15594.45512
              },
              {
                "average": 18.65985518,
                "count": 4956445,
                "maximum": 23.35295572,
                "minimum": 10.71295572,
                "name": "Z",
                "position": 2,
                "stddev": 1.910689645,
                "variance": 3.650734919
              },
              {
                "average": 46454.89746,
                "count": 4956445,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 9826.002324,
                "variance": 96550321.68
              },
              {
                "average": 1,
                "count": 4956445,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4956445,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5031834309,
                "count": 4956445,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999899161,
                "variance": 0.2499899162
              },
              {
                "average": 0.0002679339728,
                "count": 4956445,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01636649743,
                "variance": 0.0002678622383
              },
              {
                "average": 1.283102909,
                "count": 4956445,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6675764557,
                "variance": 0.4456583242
              },
              {
                "average": -0.4291470596,
                "count": 4956445,
                "maximum": 16.44000053,
                "minimum": -19.8239994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50660305,
                "variance": 110.3887076
              },
              {
                "average": 0.5066447827,
                "count": 4956445,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999558953,
                "variance": 0.2499558973
              },
              {
                "average": 667.1818136,
                "count": 4956445,
                "maximum": 710,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.7925528,
                "variance": 353.1600409
              },
              {
                "average": 222296269.9,
                "count": 4956445,
                "maximum": 222299434.6,
                "minimum": 222295355.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1319.181202,
                "variance": 1740239.044
              },
              {
                "average": 0.5066447827,
                "count": 4956445,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999558953,
                "variance": 0.2499558973
              },
              {
                "average": 0,
                "count": 4956445,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4956445,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4956445,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2200288715,
                "count": 4956445,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4142658589,
                "variance": 0.1716162018
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129667.7676,
              2278955.809,
              10.71295572,
              -129174.9876,
              2279431.529,
              23.35295572
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129667.7675934083,
                    2278955.8088268335,
                    10.712955723581082
                  ],
                  [
                    -129667.7675934083,
                    2279431.5288268332,
                    10.712955723581082
                  ],
                  [
                    -129174.9875934083,
                    2279431.5288268332,
                    23.352955723581083
                  ],
                  [
                    -129174.9875934083,
                    2278955.8088268335,
                    23.352955723581083
                  ],
                  [
                    -129667.7675934083,
                    2278955.8088268335,
                    10.712955723581082
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:37:14+00:00",
            "end_time": "2018-09-29T22:29:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1399.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82420933976155,
              71.2273191986383,
              11.193022305693273
            ],
            [
              -156.82475655573626,
              71.23166625848432,
              11.193022305693273
            ],
            [
              -156.81130856285148,
              71.23185927031669,
              19.09302230569327
            ],
            [
              -156.81076394580097,
              71.22751216750635,
              19.09302230569327
            ],
            [
              -156.82420933976155,
              71.2273191986383,
              11.193022305693273
            ]
          ]
        ]
      },
      "bbox": [
        -156.8247566,
        71.2273192,
        11.19302231,
        -156.8107639,
        71.23185927,
        19.09302231
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:12Z",
        "pc:count": 3690199,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103712.7467,
            "count": 3690199,
            "maximum": -103451.5383,
            "minimum": -103946.9983,
            "name": "X",
            "position": 0,
            "stddev": 134.6453876,
            "variance": 18129.38039
          },
          {
            "average": 2361438.536,
            "count": 3690199,
            "maximum": 2361673.541,
            "minimum": 2361199.741,
            "name": "Y",
            "position": 1,
            "stddev": 126.7034336,
            "variance": 16053.7601
          },
          {
            "average": 12.7942762,
            "count": 3690199,
            "maximum": 19.09302231,
            "minimum": 11.19302231,
            "name": "Z",
            "position": 2,
            "stddev": 1.820124313,
            "variance": 3.312852515
          },
          {
            "average": 42803.94158,
            "count": 3690199,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11383.473,
            "variance": 129583457.5
          },
          {
            "average": 1.000000542,
            "count": 3690199,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007361902231,
            "variance": 5.419760447e-07
          },
          {
            "average": 1.000000813,
            "count": 3690199,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.000901645078,
            "variance": 8.129638467e-07
          },
          {
            "average": 0.4937308259,
            "count": 3690199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999607637,
            "variance": 0.2499607652
          },
          {
            "average": 0.0004395426913,
            "count": 3690199,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02096066823,
            "variance": 0.0004393496126
          },
          {
            "average": 1.399908514,
            "count": 3690199,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.150274885,
            "variance": 1.323132311
          },
          {
            "average": 2.686219489,
            "count": 3690199,
            "maximum": 20.72999954,
            "minimum": -16.02000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.48289737,
            "variance": 109.8911373
          },
          {
            "average": 0.475995739,
            "count": 3690199,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994235307,
            "variance": 0.249423863
          },
          {
            "average": 429.6955747,
            "count": 3690199,
            "maximum": 468,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.67141467,
            "variance": 469.6502138
          },
          {
            "average": 220496627.8,
            "count": 3690199,
            "maximum": 220727492.6,
            "minimum": 220420407.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 131855.6856,
            "variance": 17385921810.0
          },
          {
            "average": 0.475995739,
            "count": 3690199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994235307,
            "variance": 0.249423863
          },
          {
            "average": 0,
            "count": 3690199,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3690199,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3690199,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1951309401,
            "count": 3690199,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3963015252,
            "variance": 0.1570548989
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103946.9983,
          2361199.741,
          11.19302231,
          -103451.5383,
          2361673.541,
          19.09302231
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103946.99832000436,
                2361199.74144894,
                11.193022305693273
              ],
              [
                -103946.99832000436,
                2361673.5414489396,
                11.193022305693273
              ],
              [
                -103451.53832000437,
                2361673.5414489396,
                19.09302230569327
              ],
              [
                -103451.53832000437,
                2361199.74144894,
                19.09302230569327
              ],
              [
                -103946.99832000436,
                2361199.74144894,
                11.193022305693273
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:12+00:00",
        "end_time": "2018-09-08T05:40:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1399.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1399.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1399.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1399.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8247566,
            71.2273192,
            11.19302231,
            -156.8107639,
            71.23185927,
            19.09302231
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82420933976155,
                  71.2273191986383,
                  11.193022305693273
                ],
                [
                  -156.82475655573626,
                  71.23166625848432,
                  11.193022305693273
                ],
                [
                  -156.81130856285148,
                  71.23185927031669,
                  19.09302230569327
                ],
                [
                  -156.81076394580097,
                  71.22751216750635,
                  19.09302230569327
                ],
                [
                  -156.82420933976155,
                  71.2273191986383,
                  11.193022305693273
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1399.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1399.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:12Z",
            "pc:count": 3690199,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103712.7467,
                "count": 3690199,
                "maximum": -103451.5383,
                "minimum": -103946.9983,
                "name": "X",
                "position": 0,
                "stddev": 134.6453876,
                "variance": 18129.38039
              },
              {
                "average": 2361438.536,
                "count": 3690199,
                "maximum": 2361673.541,
                "minimum": 2361199.741,
                "name": "Y",
                "position": 1,
                "stddev": 126.7034336,
                "variance": 16053.7601
              },
              {
                "average": 12.7942762,
                "count": 3690199,
                "maximum": 19.09302231,
                "minimum": 11.19302231,
                "name": "Z",
                "position": 2,
                "stddev": 1.820124313,
                "variance": 3.312852515
              },
              {
                "average": 42803.94158,
                "count": 3690199,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11383.473,
                "variance": 129583457.5
              },
              {
                "average": 1.000000542,
                "count": 3690199,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007361902231,
                "variance": 5.419760447e-07
              },
              {
                "average": 1.000000813,
                "count": 3690199,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.000901645078,
                "variance": 8.129638467e-07
              },
              {
                "average": 0.4937308259,
                "count": 3690199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999607637,
                "variance": 0.2499607652
              },
              {
                "average": 0.0004395426913,
                "count": 3690199,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02096066823,
                "variance": 0.0004393496126
              },
              {
                "average": 1.399908514,
                "count": 3690199,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.150274885,
                "variance": 1.323132311
              },
              {
                "average": 2.686219489,
                "count": 3690199,
                "maximum": 20.72999954,
                "minimum": -16.02000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.48289737,
                "variance": 109.8911373
              },
              {
                "average": 0.475995739,
                "count": 3690199,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994235307,
                "variance": 0.249423863
              },
              {
                "average": 429.6955747,
                "count": 3690199,
                "maximum": 468,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.67141467,
                "variance": 469.6502138
              },
              {
                "average": 220496627.8,
                "count": 3690199,
                "maximum": 220727492.6,
                "minimum": 220420407.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 131855.6856,
                "variance": 17385921810.0
              },
              {
                "average": 0.475995739,
                "count": 3690199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994235307,
                "variance": 0.249423863
              },
              {
                "average": 0,
                "count": 3690199,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3690199,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3690199,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1951309401,
                "count": 3690199,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3963015252,
                "variance": 0.1570548989
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103946.9983,
              2361199.741,
              11.19302231,
              -103451.5383,
              2361673.541,
              19.09302231
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103946.99832000436,
                    2361199.74144894,
                    11.193022305693273
                  ],
                  [
                    -103946.99832000436,
                    2361673.5414489396,
                    11.193022305693273
                  ],
                  [
                    -103451.53832000437,
                    2361673.5414489396,
                    19.09302230569327
                  ],
                  [
                    -103451.53832000437,
                    2361199.74144894,
                    19.09302230569327
                  ],
                  [
                    -103946.99832000436,
                    2361199.74144894,
                    11.193022305693273
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:12+00:00",
            "end_time": "2018-09-08T05:40:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0310.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.44363936713924,
              70.48018053961599,
              20.085262167112543
            ],
            [
              -157.44428752933024,
              70.48452270284193,
              20.085262167112543
            ],
            [
              -157.43134923890406,
              70.4847557804268,
              20.545262167112543
            ],
            [
              -157.4307035028145,
              70.48041356752307,
              20.545262167112543
            ],
            [
              -157.44363936713924,
              70.48018053961599,
              20.085262167112543
            ]
          ]
        ]
      },
      "bbox": [
        -157.4442875,
        70.48018054,
        20.08526217,
        -157.4307035,
        70.48475578,
        20.54526217
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:13Z",
        "pc:count": 4654812,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130707.4024,
            "count": 4654812,
            "maximum": -130461.13,
            "minimum": -130953.93,
            "name": "X",
            "position": 0,
            "stddev": 134.3272547,
            "variance": 18043.81135
          },
          {
            "average": 2281069.572,
            "count": 4654812,
            "maximum": 2281306.51,
            "minimum": 2280830.83,
            "name": "Y",
            "position": 1,
            "stddev": 129.07702,
            "variance": 16660.8771
          },
          {
            "average": 20.31655181,
            "count": 4654812,
            "maximum": 20.54526217,
            "minimum": 20.08526217,
            "name": "Z",
            "position": 2,
            "stddev": 0.0362050904,
            "variance": 0.001310808571
          },
          {
            "average": 13378.21766,
            "count": 4654812,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8693.734163,
            "variance": 75581013.69
          },
          {
            "average": 1,
            "count": 4654812,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4654812,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5019515289,
            "count": 4654812,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999962452,
            "variance": 0.2499962452
          },
          {
            "average": 0.0003744512131,
            "count": 4654812,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01934712071,
            "variance": 0.0003743110798
          },
          {
            "average": 7.909108252,
            "count": 4654812,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.682531036,
            "variance": 7.195972759
          },
          {
            "average": -0.02493655365,
            "count": 4654812,
            "maximum": 20.38800049,
            "minimum": -19.78199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.118555411,
            "variance": 65.91094197
          },
          {
            "average": 0.4908372239,
            "count": 4654812,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999160902,
            "variance": 0.2499160972
          },
          {
            "average": 661.2936452,
            "count": 4654812,
            "maximum": 708,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.30474149,
            "variance": 299.454078
          },
          {
            "average": 222295463.7,
            "count": 4654812,
            "maximum": 222298833.2,
            "minimum": 222294344.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1314.705076,
            "variance": 1728449.436
          },
          {
            "average": 0.4908372239,
            "count": 4654812,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999160902,
            "variance": 0.2499160972
          },
          {
            "average": 0,
            "count": 4654812,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4654812,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4654812,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06920623217,
            "count": 4654812,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2538045379,
            "variance": 0.06441674344
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130953.93,
          2280830.83,
          20.08526217,
          -130461.13,
          2281306.51,
          20.54526217
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130953.93004759622,
                2280830.830262973,
                20.085262167112543
              ],
              [
                -130953.93004759622,
                2281306.5102629727,
                20.085262167112543
              ],
              [
                -130461.13004759623,
                2281306.5102629727,
                20.545262167112543
              ],
              [
                -130461.13004759623,
                2280830.830262973,
                20.545262167112543
              ],
              [
                -130953.93004759622,
                2280830.830262973,
                20.085262167112543
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:13+00:00",
        "end_time": "2018-09-29T22:12:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0310.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0310.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0310.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0310.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4442875,
            70.48018054,
            20.08526217,
            -157.4307035,
            70.48475578,
            20.54526217
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.44363936713924,
                  70.48018053961599,
                  20.085262167112543
                ],
                [
                  -157.44428752933024,
                  70.48452270284193,
                  20.085262167112543
                ],
                [
                  -157.43134923890406,
                  70.4847557804268,
                  20.545262167112543
                ],
                [
                  -157.4307035028145,
                  70.48041356752307,
                  20.545262167112543
                ],
                [
                  -157.44363936713924,
                  70.48018053961599,
                  20.085262167112543
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0310.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0310.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:13Z",
            "pc:count": 4654812,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130707.4024,
                "count": 4654812,
                "maximum": -130461.13,
                "minimum": -130953.93,
                "name": "X",
                "position": 0,
                "stddev": 134.3272547,
                "variance": 18043.81135
              },
              {
                "average": 2281069.572,
                "count": 4654812,
                "maximum": 2281306.51,
                "minimum": 2280830.83,
                "name": "Y",
                "position": 1,
                "stddev": 129.07702,
                "variance": 16660.8771
              },
              {
                "average": 20.31655181,
                "count": 4654812,
                "maximum": 20.54526217,
                "minimum": 20.08526217,
                "name": "Z",
                "position": 2,
                "stddev": 0.0362050904,
                "variance": 0.001310808571
              },
              {
                "average": 13378.21766,
                "count": 4654812,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8693.734163,
                "variance": 75581013.69
              },
              {
                "average": 1,
                "count": 4654812,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4654812,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5019515289,
                "count": 4654812,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999962452,
                "variance": 0.2499962452
              },
              {
                "average": 0.0003744512131,
                "count": 4654812,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01934712071,
                "variance": 0.0003743110798
              },
              {
                "average": 7.909108252,
                "count": 4654812,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.682531036,
                "variance": 7.195972759
              },
              {
                "average": -0.02493655365,
                "count": 4654812,
                "maximum": 20.38800049,
                "minimum": -19.78199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.118555411,
                "variance": 65.91094197
              },
              {
                "average": 0.4908372239,
                "count": 4654812,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999160902,
                "variance": 0.2499160972
              },
              {
                "average": 661.2936452,
                "count": 4654812,
                "maximum": 708,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.30474149,
                "variance": 299.454078
              },
              {
                "average": 222295463.7,
                "count": 4654812,
                "maximum": 222298833.2,
                "minimum": 222294344.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1314.705076,
                "variance": 1728449.436
              },
              {
                "average": 0.4908372239,
                "count": 4654812,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999160902,
                "variance": 0.2499160972
              },
              {
                "average": 0,
                "count": 4654812,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4654812,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4654812,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06920623217,
                "count": 4654812,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2538045379,
                "variance": 0.06441674344
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130953.93,
              2280830.83,
              20.08526217,
              -130461.13,
              2281306.51,
              20.54526217
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130953.93004759622,
                    2280830.830262973,
                    20.085262167112543
                  ],
                  [
                    -130953.93004759622,
                    2281306.5102629727,
                    20.085262167112543
                  ],
                  [
                    -130461.13004759623,
                    2281306.5102629727,
                    20.545262167112543
                  ],
                  [
                    -130461.13004759623,
                    2280830.830262973,
                    20.545262167112543
                  ],
                  [
                    -130953.93004759622,
                    2280830.830262973,
                    20.085262167112543
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:13+00:00",
            "end_time": "2018-09-29T22:12:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0331.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.46804426133428,
              70.4843525140322,
              20.056437124774508
            ],
            [
              -157.46869691117348,
              70.48869323843661,
              20.056437124774508
            ],
            [
              -157.45575547994576,
              70.48892799405438,
              20.636437124774506
            ],
            [
              -157.45510525627955,
              70.48458721961953,
              20.636437124774506
            ],
            [
              -157.46804426133428,
              70.4843525140322,
              20.056437124774508
            ]
          ]
        ]
      },
      "bbox": [
        -157.4686969,
        70.48435251,
        20.05643712,
        -157.4551053,
        70.48892799,
        20.63643712
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:15Z",
        "pc:count": 3218619,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131608.6482,
            "count": 3218619,
            "maximum": -131364.4891,
            "minimum": -131857.3291,
            "name": "X",
            "position": 0,
            "stddev": 134.6686696,
            "variance": 18135.65056
          },
          {
            "average": 2281569.099,
            "count": 3218619,
            "maximum": 2281810.443,
            "minimum": 2281334.923,
            "name": "Y",
            "position": 1,
            "stddev": 127.5823736,
            "variance": 16277.26206
          },
          {
            "average": 20.31869912,
            "count": 3218619,
            "maximum": 20.63643712,
            "minimum": 20.05643712,
            "name": "Z",
            "position": 2,
            "stddev": 0.0556066447,
            "variance": 0.003092098935
          },
          {
            "average": 12640.00839,
            "count": 3218619,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8669.194989,
            "variance": 75154941.77
          },
          {
            "average": 1,
            "count": 3218619,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3218619,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5046944046,
            "count": 3218619,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999780397,
            "variance": 0.2499780402
          },
          {
            "average": 0.0004107351631,
            "count": 3218619,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02026244278,
            "variance": 0.0004105665873
          },
          {
            "average": 7.311873508,
            "count": 3218619,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.085538607,
            "variance": 9.520548493
          },
          {
            "average": -2.331789981,
            "count": 3218619,
            "maximum": 16.31999969,
            "minimum": -19.85400009,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.827490352,
            "variance": 61.26960521
          },
          {
            "average": 0.4852792455,
            "count": 3218619,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49978333,
            "variance": 0.249783377
          },
          {
            "average": 659.4886524,
            "count": 3218619,
            "maximum": 706,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.94592267,
            "variance": 397.8398313
          },
          {
            "average": 222294913.5,
            "count": 3218619,
            "maximum": 222298235.8,
            "minimum": 222294110.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1406.306308,
            "variance": 1977697.432
          },
          {
            "average": 0.4852792455,
            "count": 3218619,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49978333,
            "variance": 0.249783377
          },
          {
            "average": 0,
            "count": 3218619,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3218619,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3218619,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05212887888,
            "count": 3218619,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2222869187,
            "variance": 0.04941147422
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131857.3291,
          2281334.923,
          20.05643712,
          -131364.4891,
          2281810.443,
          20.63643712
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131857.32906402976,
                2281334.9234886826,
                20.056437124774508
              ],
              [
                -131857.32906402976,
                2281810.443488682,
                20.056437124774508
              ],
              [
                -131364.48906402974,
                2281810.443488682,
                20.636437124774506
              ],
              [
                -131364.48906402974,
                2281334.9234886826,
                20.636437124774506
              ],
              [
                -131857.32906402976,
                2281334.9234886826,
                20.056437124774508
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:15+00:00",
        "end_time": "2018-09-29T22:08:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0331.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0331.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0331.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0331.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4686969,
            70.48435251,
            20.05643712,
            -157.4551053,
            70.48892799,
            20.63643712
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.46804426133428,
                  70.4843525140322,
                  20.056437124774508
                ],
                [
                  -157.46869691117348,
                  70.48869323843661,
                  20.056437124774508
                ],
                [
                  -157.45575547994576,
                  70.48892799405438,
                  20.636437124774506
                ],
                [
                  -157.45510525627955,
                  70.48458721961953,
                  20.636437124774506
                ],
                [
                  -157.46804426133428,
                  70.4843525140322,
                  20.056437124774508
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0331.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0331.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:15Z",
            "pc:count": 3218619,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131608.6482,
                "count": 3218619,
                "maximum": -131364.4891,
                "minimum": -131857.3291,
                "name": "X",
                "position": 0,
                "stddev": 134.6686696,
                "variance": 18135.65056
              },
              {
                "average": 2281569.099,
                "count": 3218619,
                "maximum": 2281810.443,
                "minimum": 2281334.923,
                "name": "Y",
                "position": 1,
                "stddev": 127.5823736,
                "variance": 16277.26206
              },
              {
                "average": 20.31869912,
                "count": 3218619,
                "maximum": 20.63643712,
                "minimum": 20.05643712,
                "name": "Z",
                "position": 2,
                "stddev": 0.0556066447,
                "variance": 0.003092098935
              },
              {
                "average": 12640.00839,
                "count": 3218619,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8669.194989,
                "variance": 75154941.77
              },
              {
                "average": 1,
                "count": 3218619,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3218619,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5046944046,
                "count": 3218619,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999780397,
                "variance": 0.2499780402
              },
              {
                "average": 0.0004107351631,
                "count": 3218619,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02026244278,
                "variance": 0.0004105665873
              },
              {
                "average": 7.311873508,
                "count": 3218619,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.085538607,
                "variance": 9.520548493
              },
              {
                "average": -2.331789981,
                "count": 3218619,
                "maximum": 16.31999969,
                "minimum": -19.85400009,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.827490352,
                "variance": 61.26960521
              },
              {
                "average": 0.4852792455,
                "count": 3218619,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49978333,
                "variance": 0.249783377
              },
              {
                "average": 659.4886524,
                "count": 3218619,
                "maximum": 706,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.94592267,
                "variance": 397.8398313
              },
              {
                "average": 222294913.5,
                "count": 3218619,
                "maximum": 222298235.8,
                "minimum": 222294110.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1406.306308,
                "variance": 1977697.432
              },
              {
                "average": 0.4852792455,
                "count": 3218619,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49978333,
                "variance": 0.249783377
              },
              {
                "average": 0,
                "count": 3218619,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3218619,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3218619,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05212887888,
                "count": 3218619,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2222869187,
                "variance": 0.04941147422
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131857.3291,
              2281334.923,
              20.05643712,
              -131364.4891,
              2281810.443,
              20.63643712
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131857.32906402976,
                    2281334.9234886826,
                    20.056437124774508
                  ],
                  [
                    -131857.32906402976,
                    2281810.443488682,
                    20.056437124774508
                  ],
                  [
                    -131364.48906402974,
                    2281810.443488682,
                    20.636437124774506
                  ],
                  [
                    -131364.48906402974,
                    2281334.9234886826,
                    20.636437124774506
                  ],
                  [
                    -131857.32906402976,
                    2281334.9234886826,
                    20.056437124774508
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:15+00:00",
            "end_time": "2018-09-29T22:08:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1457.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79851333171976,
              71.23125544377567,
              9.874309364143144
            ],
            [
              -156.79905564402122,
              71.23560250556761,
              9.874309364143144
            ],
            [
              -156.78560072963194,
              71.23579382469438,
              30.834309364143145
            ],
            [
              -156.78506101806624,
              71.23144672030521,
              30.834309364143145
            ],
            [
              -156.79851333171976,
              71.23125544377567,
              9.874309364143144
            ]
          ]
        ]
      },
      "bbox": [
        -156.7990556,
        71.23125544,
        9.874309364,
        -156.785061,
        71.23579382,
        30.83430936
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:25Z",
        "pc:count": 3950795,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102733.0602,
            "count": 3950795,
            "maximum": -102488.1241,
            "minimum": -102983.7441,
            "name": "X",
            "position": 0,
            "stddev": 135.997629,
            "variance": 18495.35509
          },
          {
            "average": 2361824.622,
            "count": 3950795,
            "maximum": 2362061.741,
            "minimum": 2361587.961,
            "name": "Y",
            "position": 1,
            "stddev": 133.3848163,
            "variance": 17791.50921
          },
          {
            "average": 11.24107125,
            "count": 3950795,
            "maximum": 30.83430936,
            "minimum": 9.874309364,
            "name": "Z",
            "position": 2,
            "stddev": 0.9884456137,
            "variance": 0.9770247312
          },
          {
            "average": 39935.00203,
            "count": 3950795,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12304.98254,
            "variance": 151412595.3
          },
          {
            "average": 1.000000759,
            "count": 3950795,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008714014328,
            "variance": 7.593404571e-07
          },
          {
            "average": 1.000001519,
            "count": 3950795,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001232347257,
            "variance": 1.518679761e-06
          },
          {
            "average": 0.5013968075,
            "count": 3950795,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999981122,
            "variance": 0.2499981122
          },
          {
            "average": 0.000547990974,
            "count": 3950795,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0234027951,
            "variance": 0.0005476908185
          },
          {
            "average": 1.259769236,
            "count": 3950795,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7625622066,
            "variance": 0.5815011189
          },
          {
            "average": 0.963655782,
            "count": 3950795,
            "maximum": 20.64599991,
            "minimum": -19.83600044,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.00272442,
            "variance": 121.0599447
          },
          {
            "average": 0.5112631761,
            "count": 3950795,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499873188,
            "variance": 0.2498732041
          },
          {
            "average": 429.2604349,
            "count": 3950795,
            "maximum": 468,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.51327451,
            "variance": 420.7944309
          },
          {
            "average": 220491160.2,
            "count": 3950795,
            "maximum": 220727505.1,
            "minimum": 220420428.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 127941.8156,
            "variance": 16369108180.0
          },
          {
            "average": 0.5112631761,
            "count": 3950795,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499873188,
            "variance": 0.2498732041
          },
          {
            "average": 0,
            "count": 3950795,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3950795,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3950795,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2558550874,
            "count": 3950795,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4363408184,
            "variance": 0.1903933098
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102983.7441,
          2361587.961,
          9.874309364,
          -102488.1241,
          2362061.741,
          30.83430936
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102983.74413824812,
                2361587.9608602636,
                9.874309364143144
              ],
              [
                -102983.74413824812,
                2362061.740860264,
                9.874309364143144
              ],
              [
                -102488.12413824812,
                2362061.740860264,
                30.834309364143145
              ],
              [
                -102488.12413824812,
                2361587.9608602636,
                30.834309364143145
              ],
              [
                -102983.74413824812,
                2361587.9608602636,
                9.874309364143144
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:25+00:00",
        "end_time": "2018-09-08T05:40:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1457.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1457.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1457.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1457.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7990556,
            71.23125544,
            9.874309364,
            -156.785061,
            71.23579382,
            30.83430936
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79851333171976,
                  71.23125544377567,
                  9.874309364143144
                ],
                [
                  -156.79905564402122,
                  71.23560250556761,
                  9.874309364143144
                ],
                [
                  -156.78560072963194,
                  71.23579382469438,
                  30.834309364143145
                ],
                [
                  -156.78506101806624,
                  71.23144672030521,
                  30.834309364143145
                ],
                [
                  -156.79851333171976,
                  71.23125544377567,
                  9.874309364143144
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1457.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1457.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:25Z",
            "pc:count": 3950795,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102733.0602,
                "count": 3950795,
                "maximum": -102488.1241,
                "minimum": -102983.7441,
                "name": "X",
                "position": 0,
                "stddev": 135.997629,
                "variance": 18495.35509
              },
              {
                "average": 2361824.622,
                "count": 3950795,
                "maximum": 2362061.741,
                "minimum": 2361587.961,
                "name": "Y",
                "position": 1,
                "stddev": 133.3848163,
                "variance": 17791.50921
              },
              {
                "average": 11.24107125,
                "count": 3950795,
                "maximum": 30.83430936,
                "minimum": 9.874309364,
                "name": "Z",
                "position": 2,
                "stddev": 0.9884456137,
                "variance": 0.9770247312
              },
              {
                "average": 39935.00203,
                "count": 3950795,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12304.98254,
                "variance": 151412595.3
              },
              {
                "average": 1.000000759,
                "count": 3950795,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008714014328,
                "variance": 7.593404571e-07
              },
              {
                "average": 1.000001519,
                "count": 3950795,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001232347257,
                "variance": 1.518679761e-06
              },
              {
                "average": 0.5013968075,
                "count": 3950795,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999981122,
                "variance": 0.2499981122
              },
              {
                "average": 0.000547990974,
                "count": 3950795,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0234027951,
                "variance": 0.0005476908185
              },
              {
                "average": 1.259769236,
                "count": 3950795,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7625622066,
                "variance": 0.5815011189
              },
              {
                "average": 0.963655782,
                "count": 3950795,
                "maximum": 20.64599991,
                "minimum": -19.83600044,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.00272442,
                "variance": 121.0599447
              },
              {
                "average": 0.5112631761,
                "count": 3950795,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499873188,
                "variance": 0.2498732041
              },
              {
                "average": 429.2604349,
                "count": 3950795,
                "maximum": 468,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.51327451,
                "variance": 420.7944309
              },
              {
                "average": 220491160.2,
                "count": 3950795,
                "maximum": 220727505.1,
                "minimum": 220420428.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 127941.8156,
                "variance": 16369108180.0
              },
              {
                "average": 0.5112631761,
                "count": 3950795,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499873188,
                "variance": 0.2498732041
              },
              {
                "average": 0,
                "count": 3950795,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3950795,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3950795,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2558550874,
                "count": 3950795,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4363408184,
                "variance": 0.1903933098
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102983.7441,
              2361587.961,
              9.874309364,
              -102488.1241,
              2362061.741,
              30.83430936
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102983.74413824812,
                    2361587.9608602636,
                    9.874309364143144
                  ],
                  [
                    -102983.74413824812,
                    2362061.740860264,
                    9.874309364143144
                  ],
                  [
                    -102488.12413824812,
                    2362061.740860264,
                    30.834309364143145
                  ],
                  [
                    -102488.12413824812,
                    2361587.9608602636,
                    30.834309364143145
                  ],
                  [
                    -102983.74413824812,
                    2361587.9608602636,
                    9.874309364143144
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:25+00:00",
            "end_time": "2018-09-08T05:40:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0222.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.39510415581265,
              70.46363104588734,
              8.450881748434561
            ],
            [
              -157.3957428135697,
              70.467973505221,
              8.450881748434561
            ],
            [
              -157.38281277997035,
              70.46820328206923,
              22.35088174843456
            ],
            [
              -157.38217654560987,
              70.46386077380312,
              22.35088174843456
            ],
            [
              -157.39510415581265,
              70.46363104588734,
              8.450881748434561
            ]
          ]
        ]
      },
      "bbox": [
        -157.3957428,
        70.46363105,
        8.450881748,
        -157.3821765,
        70.46820328,
        22.35088175
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:10Z",
        "pc:count": 4372335,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128969.7377,
            "count": 4372335,
            "maximum": -128709.5688,
            "minimum": -129202.3888,
            "name": "X",
            "position": 0,
            "stddev": 138.9573616,
            "variance": 19309.14834
          },
          {
            "average": 2279171.664,
            "count": 4372335,
            "maximum": 2279403.251,
            "minimum": 2278927.511,
            "name": "Y",
            "position": 1,
            "stddev": 126.3860971,
            "variance": 15973.44554
          },
          {
            "average": 15.80042392,
            "count": 4372335,
            "maximum": 22.35088175,
            "minimum": 8.450881748,
            "name": "Z",
            "position": 2,
            "stddev": 5.031767197,
            "variance": 25.31868113
          },
          {
            "average": 39244.81247,
            "count": 4372335,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 14278.38765,
            "variance": 203872354
          },
          {
            "average": 1.000120073,
            "count": 4372335,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01095713245,
            "variance": 0.0001200587516
          },
          {
            "average": 1.000240146,
            "count": 4372335,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01549479487,
            "variance": 0.0002400886681
          },
          {
            "average": 0.502959174,
            "count": 4372335,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999913004,
            "variance": 0.2499913005
          },
          {
            "average": 0.0003320880033,
            "count": 4372335,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01822025787,
            "variance": 0.0003319777968
          },
          {
            "average": 2.678346924,
            "count": 4372335,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.038198529,
            "variance": 9.230650302
          },
          {
            "average": -0.5559415219,
            "count": 4372335,
            "maximum": 20.43000031,
            "minimum": -19.77000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.914682533,
            "variance": 98.30092973
          },
          {
            "average": 0.5049404952,
            "count": 4372335,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999756481,
            "variance": 0.2499756487
          },
          {
            "average": 667.7813907,
            "count": 4372335,
            "maximum": 711,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.39215078,
            "variance": 376.055512
          },
          {
            "average": 222296331.7,
            "count": 4372335,
            "maximum": 222299670.1,
            "minimum": 222295349.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1399.919188,
            "variance": 1959773.734
          },
          {
            "average": 0.5049404952,
            "count": 4372335,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999756481,
            "variance": 0.2499756487
          },
          {
            "average": 0,
            "count": 4372335,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4372335,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4372335,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.182230776,
            "count": 4372335,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3860346544,
            "variance": 0.1490227544
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129202.3888,
          2278927.511,
          8.450881748,
          -128709.5688,
          2279403.251,
          22.35088175
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129202.38881146183,
                2278927.5106753865,
                8.450881748434561
              ],
              [
                -129202.38881146183,
                2279403.2506753867,
                8.450881748434561
              ],
              [
                -128709.56881146182,
                2279403.2506753867,
                22.35088174843456
              ],
              [
                -128709.56881146182,
                2278927.5106753865,
                22.35088174843456
              ],
              [
                -129202.38881146183,
                2278927.5106753865,
                8.450881748434561
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:10+00:00",
        "end_time": "2018-09-29T22:29:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0222.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0222.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0222.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0222.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3957428,
            70.46363105,
            8.450881748,
            -157.3821765,
            70.46820328,
            22.35088175
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.39510415581265,
                  70.46363104588734,
                  8.450881748434561
                ],
                [
                  -157.3957428135697,
                  70.467973505221,
                  8.450881748434561
                ],
                [
                  -157.38281277997035,
                  70.46820328206923,
                  22.35088174843456
                ],
                [
                  -157.38217654560987,
                  70.46386077380312,
                  22.35088174843456
                ],
                [
                  -157.39510415581265,
                  70.46363104588734,
                  8.450881748434561
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0222.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0222.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:10Z",
            "pc:count": 4372335,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128969.7377,
                "count": 4372335,
                "maximum": -128709.5688,
                "minimum": -129202.3888,
                "name": "X",
                "position": 0,
                "stddev": 138.9573616,
                "variance": 19309.14834
              },
              {
                "average": 2279171.664,
                "count": 4372335,
                "maximum": 2279403.251,
                "minimum": 2278927.511,
                "name": "Y",
                "position": 1,
                "stddev": 126.3860971,
                "variance": 15973.44554
              },
              {
                "average": 15.80042392,
                "count": 4372335,
                "maximum": 22.35088175,
                "minimum": 8.450881748,
                "name": "Z",
                "position": 2,
                "stddev": 5.031767197,
                "variance": 25.31868113
              },
              {
                "average": 39244.81247,
                "count": 4372335,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 14278.38765,
                "variance": 203872354
              },
              {
                "average": 1.000120073,
                "count": 4372335,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01095713245,
                "variance": 0.0001200587516
              },
              {
                "average": 1.000240146,
                "count": 4372335,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01549479487,
                "variance": 0.0002400886681
              },
              {
                "average": 0.502959174,
                "count": 4372335,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999913004,
                "variance": 0.2499913005
              },
              {
                "average": 0.0003320880033,
                "count": 4372335,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01822025787,
                "variance": 0.0003319777968
              },
              {
                "average": 2.678346924,
                "count": 4372335,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.038198529,
                "variance": 9.230650302
              },
              {
                "average": -0.5559415219,
                "count": 4372335,
                "maximum": 20.43000031,
                "minimum": -19.77000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.914682533,
                "variance": 98.30092973
              },
              {
                "average": 0.5049404952,
                "count": 4372335,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999756481,
                "variance": 0.2499756487
              },
              {
                "average": 667.7813907,
                "count": 4372335,
                "maximum": 711,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.39215078,
                "variance": 376.055512
              },
              {
                "average": 222296331.7,
                "count": 4372335,
                "maximum": 222299670.1,
                "minimum": 222295349.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1399.919188,
                "variance": 1959773.734
              },
              {
                "average": 0.5049404952,
                "count": 4372335,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999756481,
                "variance": 0.2499756487
              },
              {
                "average": 0,
                "count": 4372335,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4372335,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4372335,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.182230776,
                "count": 4372335,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3860346544,
                "variance": 0.1490227544
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129202.3888,
              2278927.511,
              8.450881748,
              -128709.5688,
              2279403.251,
              22.35088175
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129202.38881146183,
                    2278927.5106753865,
                    8.450881748434561
                  ],
                  [
                    -129202.38881146183,
                    2279403.2506753867,
                    8.450881748434561
                  ],
                  [
                    -128709.56881146182,
                    2279403.2506753867,
                    22.35088174843456
                  ],
                  [
                    -128709.56881146182,
                    2278927.5106753865,
                    22.35088174843456
                  ],
                  [
                    -129202.38881146183,
                    2278927.5106753865,
                    8.450881748434561
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:10+00:00",
            "end_time": "2018-09-29T22:29:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1458.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78578898778815,
              71.23117643253934,
              9.465348324521148
            ],
            [
              -156.78632844635584,
              71.23552040742254,
              9.465348324521148
            ],
            [
              -156.77287238728664,
              71.23571087026947,
              46.265348324521156
            ],
            [
              -156.77233552786308,
              71.23136685301,
              46.265348324521156
            ],
            [
              -156.78578898778815,
              71.23117643253934,
              9.465348324521148
            ]
          ]
        ]
      },
      "bbox": [
        -156.7863284,
        71.23117643,
        9.465348325,
        -156.7723355,
        71.23571087,
        46.26534832
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:31Z",
        "pc:count": 2167156,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102295.3164,
            "count": 2167156,
            "maximum": -102020.4714,
            "minimum": -102516.1314,
            "name": "X",
            "position": 0,
            "stddev": 143.1247145,
            "variance": 20484.68391
          },
          {
            "average": 2361773.962,
            "count": 2167156,
            "maximum": 2362033.118,
            "minimum": 2361559.678,
            "name": "Y",
            "position": 1,
            "stddev": 126.7851035,
            "variance": 16074.46247
          },
          {
            "average": 9.913767229,
            "count": 2167156,
            "maximum": 46.26534832,
            "minimum": 9.465348325,
            "name": "Z",
            "position": 2,
            "stddev": 0.4109997136,
            "variance": 0.1689207646
          },
          {
            "average": 22529.81928,
            "count": 2167156,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 15525.34359,
            "variance": 241036293.4
          },
          {
            "average": 1.000000923,
            "count": 2167156,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009606602266,
            "variance": 9.228680709e-07
          },
          {
            "average": 1.000001846,
            "count": 2167156,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001358578094,
            "variance": 1.845734438e-06
          },
          {
            "average": 0.4965830794,
            "count": 2167156,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999884399,
            "variance": 0.24998844
          },
          {
            "average": 0.000787668262,
            "count": 2167156,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02805437941,
            "variance": 0.0007870482039
          },
          {
            "average": 6.102523307,
            "count": 2167156,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.630537553,
            "variance": 13.18080292
          },
          {
            "average": 2.11460881,
            "count": 2167156,
            "maximum": 20.53800011,
            "minimum": -19.63199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.927776327,
            "variance": 62.84963749
          },
          {
            "average": 0.5011955761,
            "count": 2167156,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499998686,
            "variance": 0.249998686
          },
          {
            "average": 432.5422425,
            "count": 2167156,
            "maximum": 468,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.5515057,
            "variance": 464.467398
          },
          {
            "average": 220507682.2,
            "count": 2167156,
            "maximum": 220727511.5,
            "minimum": 220421288.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 136920.1225,
            "variance": 18747119950.0
          },
          {
            "average": 0.5011955761,
            "count": 2167156,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499998686,
            "variance": 0.249998686
          },
          {
            "average": 0,
            "count": 2167156,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2167156,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2167156,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09084855913,
            "count": 2167156,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2873936961,
            "variance": 0.08259513654
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102516.1314,
          2361559.678,
          9.465348325,
          -102020.4714,
          2362033.118,
          46.26534832
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102516.13142137644,
                2361559.677795186,
                9.465348324521148
              ],
              [
                -102516.13142137644,
                2362033.1177951866,
                9.465348324521148
              ],
              [
                -102020.47142137644,
                2362033.1177951866,
                46.265348324521156
              ],
              [
                -102020.47142137644,
                2361559.677795186,
                46.265348324521156
              ],
              [
                -102516.13142137644,
                2361559.677795186,
                9.465348324521148
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:31+00:00",
        "end_time": "2018-09-08T05:54:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1458.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1458.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1458.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1458.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7863284,
            71.23117643,
            9.465348325,
            -156.7723355,
            71.23571087,
            46.26534832
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78578898778815,
                  71.23117643253934,
                  9.465348324521148
                ],
                [
                  -156.78632844635584,
                  71.23552040742254,
                  9.465348324521148
                ],
                [
                  -156.77287238728664,
                  71.23571087026947,
                  46.265348324521156
                ],
                [
                  -156.77233552786308,
                  71.23136685301,
                  46.265348324521156
                ],
                [
                  -156.78578898778815,
                  71.23117643253934,
                  9.465348324521148
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1458.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1458.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:31Z",
            "pc:count": 2167156,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102295.3164,
                "count": 2167156,
                "maximum": -102020.4714,
                "minimum": -102516.1314,
                "name": "X",
                "position": 0,
                "stddev": 143.1247145,
                "variance": 20484.68391
              },
              {
                "average": 2361773.962,
                "count": 2167156,
                "maximum": 2362033.118,
                "minimum": 2361559.678,
                "name": "Y",
                "position": 1,
                "stddev": 126.7851035,
                "variance": 16074.46247
              },
              {
                "average": 9.913767229,
                "count": 2167156,
                "maximum": 46.26534832,
                "minimum": 9.465348325,
                "name": "Z",
                "position": 2,
                "stddev": 0.4109997136,
                "variance": 0.1689207646
              },
              {
                "average": 22529.81928,
                "count": 2167156,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 15525.34359,
                "variance": 241036293.4
              },
              {
                "average": 1.000000923,
                "count": 2167156,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009606602266,
                "variance": 9.228680709e-07
              },
              {
                "average": 1.000001846,
                "count": 2167156,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001358578094,
                "variance": 1.845734438e-06
              },
              {
                "average": 0.4965830794,
                "count": 2167156,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999884399,
                "variance": 0.24998844
              },
              {
                "average": 0.000787668262,
                "count": 2167156,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02805437941,
                "variance": 0.0007870482039
              },
              {
                "average": 6.102523307,
                "count": 2167156,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.630537553,
                "variance": 13.18080292
              },
              {
                "average": 2.11460881,
                "count": 2167156,
                "maximum": 20.53800011,
                "minimum": -19.63199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.927776327,
                "variance": 62.84963749
              },
              {
                "average": 0.5011955761,
                "count": 2167156,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499998686,
                "variance": 0.249998686
              },
              {
                "average": 432.5422425,
                "count": 2167156,
                "maximum": 468,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.5515057,
                "variance": 464.467398
              },
              {
                "average": 220507682.2,
                "count": 2167156,
                "maximum": 220727511.5,
                "minimum": 220421288.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 136920.1225,
                "variance": 18747119950.0
              },
              {
                "average": 0.5011955761,
                "count": 2167156,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499998686,
                "variance": 0.249998686
              },
              {
                "average": 0,
                "count": 2167156,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2167156,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2167156,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09084855913,
                "count": 2167156,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2873936961,
                "variance": 0.08259513654
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102516.1314,
              2361559.678,
              9.465348325,
              -102020.4714,
              2362033.118,
              46.26534832
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102516.13142137644,
                    2361559.677795186,
                    9.465348324521148
                  ],
                  [
                    -102516.13142137644,
                    2362033.1177951866,
                    9.465348324521148
                  ],
                  [
                    -102020.47142137644,
                    2362033.1177951866,
                    46.265348324521156
                  ],
                  [
                    -102020.47142137644,
                    2361559.677795186,
                    46.265348324521156
                  ],
                  [
                    -102516.13142137644,
                    2361559.677795186,
                    9.465348324521148
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:31+00:00",
            "end_time": "2018-09-08T05:54:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0239.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.46847260463332,
              70.46795926210721,
              20.14246165032326
            ],
            [
              -157.46912506389648,
              70.47230085151124,
              20.14246165032326
            ],
            [
              -157.45619439421947,
              70.4725355856565,
              24.56246165032326
            ],
            [
              -157.4555443581026,
              70.46819394626229,
              24.56246165032326
            ],
            [
              -157.46847260463332,
              70.46795926210721,
              20.14246165032326
            ]
          ]
        ]
      },
      "bbox": [
        -157.4691251,
        70.46795926,
        20.14246165,
        -157.4555444,
        70.47253559,
        24.56246165
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:42Z",
        "pc:count": 3498477,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131715.7713,
            "count": 3498477,
            "maximum": -131474.4481,
            "minimum": -131967.2281,
            "name": "X",
            "position": 0,
            "stddev": 136.1894338,
            "variance": 18547.56189
          },
          {
            "average": 2279782.956,
            "count": 3498477,
            "maximum": 2280020.364,
            "minimum": 2279544.704,
            "name": "Y",
            "position": 1,
            "stddev": 131.2929632,
            "variance": 17237.84219
          },
          {
            "average": 20.33842108,
            "count": 3498477,
            "maximum": 24.56246165,
            "minimum": 20.14246165,
            "name": "Z",
            "position": 2,
            "stddev": 0.1944069289,
            "variance": 0.03779405402
          },
          {
            "average": 12413.93519,
            "count": 3498477,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 9562.722374,
            "variance": 91445659.2
          },
          {
            "average": 1.000002573,
            "count": 3498477,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001603914622,
            "variance": 2.572542115e-06
          },
          {
            "average": 1.000005145,
            "count": 3498477,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002268274894,
            "variance": 5.145070993e-06
          },
          {
            "average": 0.5024426343,
            "count": 3498477,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499994105,
            "variance": 0.249994105
          },
          {
            "average": 0.0004401915462,
            "count": 3498477,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02097612699,
            "variance": 0.0004399979034
          },
          {
            "average": 7.651396308,
            "count": 3498477,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.848882096,
            "variance": 8.116129198
          },
          {
            "average": -1.496362819,
            "count": 3498477,
            "maximum": 16.51199913,
            "minimum": -19.76399994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.649431212,
            "variance": 74.81266029
          },
          {
            "average": 0.489036515,
            "count": 3498477,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499879859,
            "variance": 0.2498798734
          },
          {
            "average": 664.8337579,
            "count": 3498477,
            "maximum": 706,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.58688462,
            "variance": 309.2985107
          },
          {
            "average": 222295840.5,
            "count": 3498477,
            "maximum": 222298262.3,
            "minimum": 222295166.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1003.778857,
            "variance": 1007571.994
          },
          {
            "average": 0.489036515,
            "count": 3498477,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499879859,
            "variance": 0.2498798734
          },
          {
            "average": 0,
            "count": 3498477,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3498477,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3498477,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06730042816,
            "count": 3498477,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2505416103,
            "variance": 0.06277109847
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131967.2281,
          2279544.704,
          20.14246165,
          -131474.4481,
          2280020.364,
          24.56246165
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131967.2281219976,
                2279544.703829701,
                20.14246165032326
              ],
              [
                -131967.2281219976,
                2280020.363829701,
                20.14246165032326
              ],
              [
                -131474.4481219976,
                2280020.363829701,
                24.56246165032326
              ],
              [
                -131474.4481219976,
                2279544.703829701,
                24.56246165032326
              ],
              [
                -131967.2281219976,
                2279544.703829701,
                20.14246165032326
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:42+00:00",
        "end_time": "2018-09-29T22:26:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0239.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0239.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0239.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0239.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4691251,
            70.46795926,
            20.14246165,
            -157.4555444,
            70.47253559,
            24.56246165
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.46847260463332,
                  70.46795926210721,
                  20.14246165032326
                ],
                [
                  -157.46912506389648,
                  70.47230085151124,
                  20.14246165032326
                ],
                [
                  -157.45619439421947,
                  70.4725355856565,
                  24.56246165032326
                ],
                [
                  -157.4555443581026,
                  70.46819394626229,
                  24.56246165032326
                ],
                [
                  -157.46847260463332,
                  70.46795926210721,
                  20.14246165032326
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0239.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0239.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:42Z",
            "pc:count": 3498477,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131715.7713,
                "count": 3498477,
                "maximum": -131474.4481,
                "minimum": -131967.2281,
                "name": "X",
                "position": 0,
                "stddev": 136.1894338,
                "variance": 18547.56189
              },
              {
                "average": 2279782.956,
                "count": 3498477,
                "maximum": 2280020.364,
                "minimum": 2279544.704,
                "name": "Y",
                "position": 1,
                "stddev": 131.2929632,
                "variance": 17237.84219
              },
              {
                "average": 20.33842108,
                "count": 3498477,
                "maximum": 24.56246165,
                "minimum": 20.14246165,
                "name": "Z",
                "position": 2,
                "stddev": 0.1944069289,
                "variance": 0.03779405402
              },
              {
                "average": 12413.93519,
                "count": 3498477,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 9562.722374,
                "variance": 91445659.2
              },
              {
                "average": 1.000002573,
                "count": 3498477,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001603914622,
                "variance": 2.572542115e-06
              },
              {
                "average": 1.000005145,
                "count": 3498477,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002268274894,
                "variance": 5.145070993e-06
              },
              {
                "average": 0.5024426343,
                "count": 3498477,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499994105,
                "variance": 0.249994105
              },
              {
                "average": 0.0004401915462,
                "count": 3498477,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02097612699,
                "variance": 0.0004399979034
              },
              {
                "average": 7.651396308,
                "count": 3498477,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.848882096,
                "variance": 8.116129198
              },
              {
                "average": -1.496362819,
                "count": 3498477,
                "maximum": 16.51199913,
                "minimum": -19.76399994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.649431212,
                "variance": 74.81266029
              },
              {
                "average": 0.489036515,
                "count": 3498477,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499879859,
                "variance": 0.2498798734
              },
              {
                "average": 664.8337579,
                "count": 3498477,
                "maximum": 706,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.58688462,
                "variance": 309.2985107
              },
              {
                "average": 222295840.5,
                "count": 3498477,
                "maximum": 222298262.3,
                "minimum": 222295166.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1003.778857,
                "variance": 1007571.994
              },
              {
                "average": 0.489036515,
                "count": 3498477,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499879859,
                "variance": 0.2498798734
              },
              {
                "average": 0,
                "count": 3498477,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3498477,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3498477,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06730042816,
                "count": 3498477,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2505416103,
                "variance": 0.06277109847
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131967.2281,
              2279544.704,
              20.14246165,
              -131474.4481,
              2280020.364,
              24.56246165
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131967.2281219976,
                    2279544.703829701,
                    20.14246165032326
                  ],
                  [
                    -131967.2281219976,
                    2280020.363829701,
                    20.14246165032326
                  ],
                  [
                    -131474.4481219976,
                    2280020.363829701,
                    24.56246165032326
                  ],
                  [
                    -131474.4481219976,
                    2279544.703829701,
                    24.56246165032326
                  ],
                  [
                    -131967.2281219976,
                    2279544.703829701,
                    20.14246165032326
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:42+00:00",
            "end_time": "2018-09-29T22:26:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1400.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81148869970275,
              71.22723965441872,
              11.604283056431711
            ],
            [
              -156.81203333548842,
              71.23158582980811,
              11.604283056431711
            ],
            [
              -156.7985809390537,
              71.23177803251914,
              20.54428305643171
            ],
            [
              -156.79803890254865,
              71.22743181435443,
              20.54428305643171
            ],
            [
              -156.81148869970275,
              71.22723965441872,
              11.604283056431711
            ]
          ]
        ]
      },
      "bbox": [
        -156.8120333,
        71.22723965,
        11.60428306,
        -156.7980389,
        71.23177803,
        20.54428306
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:18Z",
        "pc:count": 4299580,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103225.8099,
            "count": 4299580,
            "maximum": -102983.8332,
            "minimum": -103479.4532,
            "name": "X",
            "position": 0,
            "stddev": 133.3204721,
            "variance": 17774.34828
          },
          {
            "average": 2361410.909,
            "count": 4299580,
            "maximum": 2361644.922,
            "minimum": 2361171.222,
            "name": "Y",
            "position": 1,
            "stddev": 125.6808977,
            "variance": 15795.68804
          },
          {
            "average": 15.46870711,
            "count": 4299580,
            "maximum": 20.54428306,
            "minimum": 11.60428306,
            "name": "Z",
            "position": 2,
            "stddev": 2.596541486,
            "variance": 6.742027688
          },
          {
            "average": 44679.70866,
            "count": 4299580,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10396.75433,
            "variance": 108092500.6
          },
          {
            "average": 1,
            "count": 4299580,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4299580,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4987829044,
            "count": 4299580,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999985768,
            "variance": 0.2499985768
          },
          {
            "average": 0.0004312049084,
            "count": 4299580,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02076099879,
            "variance": 0.000431019071
          },
          {
            "average": 1.23663288,
            "count": 4299580,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4252120184,
            "variance": 0.1808052606
          },
          {
            "average": 2.532629158,
            "count": 4299580,
            "maximum": 20.86199951,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.84035608,
            "variance": 117.51332
          },
          {
            "average": 0.5155952442,
            "count": 4299580,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997567873,
            "variance": 0.2497568464
          },
          {
            "average": 428.6141349,
            "count": 4299580,
            "maximum": 468,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.10946288,
            "variance": 404.3904972
          },
          {
            "average": 220486046.9,
            "count": 4299580,
            "maximum": 220727498.8,
            "minimum": 220420417.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 124453.1499,
            "variance": 15488586510.0
          },
          {
            "average": 0.5155952442,
            "count": 4299580,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997567873,
            "variance": 0.2497568464
          },
          {
            "average": 0,
            "count": 4299580,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4299580,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4299580,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2334121007,
            "count": 4299580,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4230022855,
            "variance": 0.1789309336
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103479.4532,
          2361171.222,
          11.60428306,
          -102983.8332,
          2361644.922,
          20.54428306
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103479.45323770506,
                2361171.221529582,
                11.604283056431711
              ],
              [
                -103479.45323770506,
                2361644.9215295822,
                11.604283056431711
              ],
              [
                -102983.83323770507,
                2361644.9215295822,
                20.54428305643171
              ],
              [
                -102983.83323770507,
                2361171.221529582,
                20.54428305643171
              ],
              [
                -103479.45323770506,
                2361171.221529582,
                11.604283056431711
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:18+00:00",
        "end_time": "2018-09-08T05:40:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1400.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1400.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1400.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1400.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8120333,
            71.22723965,
            11.60428306,
            -156.7980389,
            71.23177803,
            20.54428306
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81148869970275,
                  71.22723965441872,
                  11.604283056431711
                ],
                [
                  -156.81203333548842,
                  71.23158582980811,
                  11.604283056431711
                ],
                [
                  -156.7985809390537,
                  71.23177803251914,
                  20.54428305643171
                ],
                [
                  -156.79803890254865,
                  71.22743181435443,
                  20.54428305643171
                ],
                [
                  -156.81148869970275,
                  71.22723965441872,
                  11.604283056431711
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1400.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1400.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:18Z",
            "pc:count": 4299580,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103225.8099,
                "count": 4299580,
                "maximum": -102983.8332,
                "minimum": -103479.4532,
                "name": "X",
                "position": 0,
                "stddev": 133.3204721,
                "variance": 17774.34828
              },
              {
                "average": 2361410.909,
                "count": 4299580,
                "maximum": 2361644.922,
                "minimum": 2361171.222,
                "name": "Y",
                "position": 1,
                "stddev": 125.6808977,
                "variance": 15795.68804
              },
              {
                "average": 15.46870711,
                "count": 4299580,
                "maximum": 20.54428306,
                "minimum": 11.60428306,
                "name": "Z",
                "position": 2,
                "stddev": 2.596541486,
                "variance": 6.742027688
              },
              {
                "average": 44679.70866,
                "count": 4299580,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10396.75433,
                "variance": 108092500.6
              },
              {
                "average": 1,
                "count": 4299580,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4299580,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4987829044,
                "count": 4299580,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999985768,
                "variance": 0.2499985768
              },
              {
                "average": 0.0004312049084,
                "count": 4299580,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02076099879,
                "variance": 0.000431019071
              },
              {
                "average": 1.23663288,
                "count": 4299580,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4252120184,
                "variance": 0.1808052606
              },
              {
                "average": 2.532629158,
                "count": 4299580,
                "maximum": 20.86199951,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.84035608,
                "variance": 117.51332
              },
              {
                "average": 0.5155952442,
                "count": 4299580,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997567873,
                "variance": 0.2497568464
              },
              {
                "average": 428.6141349,
                "count": 4299580,
                "maximum": 468,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.10946288,
                "variance": 404.3904972
              },
              {
                "average": 220486046.9,
                "count": 4299580,
                "maximum": 220727498.8,
                "minimum": 220420417.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 124453.1499,
                "variance": 15488586510.0
              },
              {
                "average": 0.5155952442,
                "count": 4299580,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997567873,
                "variance": 0.2497568464
              },
              {
                "average": 0,
                "count": 4299580,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4299580,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4299580,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2334121007,
                "count": 4299580,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4230022855,
                "variance": 0.1789309336
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103479.4532,
              2361171.222,
              11.60428306,
              -102983.8332,
              2361644.922,
              20.54428306
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103479.45323770506,
                    2361171.221529582,
                    11.604283056431711
                  ],
                  [
                    -103479.45323770506,
                    2361644.9215295822,
                    11.604283056431711
                  ],
                  [
                    -102983.83323770507,
                    2361644.9215295822,
                    20.54428305643171
                  ],
                  [
                    -102983.83323770507,
                    2361171.221529582,
                    20.54428305643171
                  ],
                  [
                    -103479.45323770506,
                    2361171.221529582,
                    11.604283056431711
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:18+00:00",
            "end_time": "2018-09-08T05:40:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0311.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.43138319292464,
              70.48014278849948,
              6.151194366862757
            ],
            [
              -157.43202902209904,
              70.48448480973067,
              6.151194366862757
            ],
            [
              -157.41909010451735,
              70.48471706630332,
              50.69119436686276
            ],
            [
              -157.4184467015257,
              70.48037499557108,
              50.69119436686276
            ],
            [
              -157.43138319292464,
              70.48014278849948,
              6.151194366862757
            ]
          ]
        ]
      },
      "bbox": [
        -157.432029,
        70.48014279,
        6.151194367,
        -157.4184467,
        70.48471707,
        50.69119437
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:13Z",
        "pc:count": 6154219,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130244.6968,
            "count": 6154219,
            "maximum": -129995.6639,
            "minimum": -130488.4839,
            "name": "X",
            "position": 0,
            "stddev": 125.188422,
            "variance": 15672.14099
          },
          {
            "average": 2281039.724,
            "count": 6154219,
            "maximum": 2281278.241,
            "minimum": 2280802.581,
            "name": "Y",
            "position": 1,
            "stddev": 131.3764664,
            "variance": 17259.77592
          },
          {
            "average": 25.74965326,
            "count": 6154219,
            "maximum": 50.69119437,
            "minimum": 6.151194367,
            "name": "Z",
            "position": 2,
            "stddev": 4.439236869,
            "variance": 19.70682398
          },
          {
            "average": 36458.32926,
            "count": 6154219,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13556.54372,
            "variance": 183779877.7
          },
          {
            "average": 1.014526295,
            "count": 6154219,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1240027009,
            "variance": 0.01537666984
          },
          {
            "average": 1.029069976,
            "count": 6154219,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.177225139,
            "variance": 0.03140874991
          },
          {
            "average": 0.5077341252,
            "count": 6154219,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999402203,
            "variance": 0.2499402239
          },
          {
            "average": 0.0002876075746,
            "count": 6154219,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0169565593,
            "variance": 0.0002875249032
          },
          {
            "average": 2.326090281,
            "count": 6154219,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.624345826,
            "variance": 6.887191015
          },
          {
            "average": -3.209011461,
            "count": 6154219,
            "maximum": 16.26600075,
            "minimum": -19.77000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.26184538,
            "variance": 105.3054706
          },
          {
            "average": 0.4990319649,
            "count": 6154219,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999991035,
            "variance": 0.2499991035
          },
          {
            "average": 660.7284827,
            "count": 6154219,
            "maximum": 708,
            "minimum": 651,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.86730485,
            "variance": 319.2405826
          },
          {
            "average": 222295356.9,
            "count": 6154219,
            "maximum": 222298833.6,
            "minimum": 222294338.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1387.166384,
            "variance": 1924230.576
          },
          {
            "average": 0.4990319649,
            "count": 6154219,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999991035,
            "variance": 0.2499991035
          },
          {
            "average": 0,
            "count": 6154219,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6154219,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6154219,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2198397555,
            "count": 6154219,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4141379785,
            "variance": 0.1715102652
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130488.4839,
          2280802.581,
          6.151194367,
          -129995.6639,
          2281278.241,
          50.69119437
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130488.48393183653,
                2280802.58107497,
                6.151194366862757
              ],
              [
                -130488.48393183653,
                2281278.24107497,
                6.151194366862757
              ],
              [
                -129995.66393183652,
                2281278.24107497,
                50.69119436686276
              ],
              [
                -129995.66393183652,
                2280802.58107497,
                50.69119436686276
              ],
              [
                -130488.48393183653,
                2280802.58107497,
                6.151194366862757
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:13+00:00",
        "end_time": "2018-09-29T22:12:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0311.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0311.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0311.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0311.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.432029,
            70.48014279,
            6.151194367,
            -157.4184467,
            70.48471707,
            50.69119437
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.43138319292464,
                  70.48014278849948,
                  6.151194366862757
                ],
                [
                  -157.43202902209904,
                  70.48448480973067,
                  6.151194366862757
                ],
                [
                  -157.41909010451735,
                  70.48471706630332,
                  50.69119436686276
                ],
                [
                  -157.4184467015257,
                  70.48037499557108,
                  50.69119436686276
                ],
                [
                  -157.43138319292464,
                  70.48014278849948,
                  6.151194366862757
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0311.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0311.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:13Z",
            "pc:count": 6154219,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130244.6968,
                "count": 6154219,
                "maximum": -129995.6639,
                "minimum": -130488.4839,
                "name": "X",
                "position": 0,
                "stddev": 125.188422,
                "variance": 15672.14099
              },
              {
                "average": 2281039.724,
                "count": 6154219,
                "maximum": 2281278.241,
                "minimum": 2280802.581,
                "name": "Y",
                "position": 1,
                "stddev": 131.3764664,
                "variance": 17259.77592
              },
              {
                "average": 25.74965326,
                "count": 6154219,
                "maximum": 50.69119437,
                "minimum": 6.151194367,
                "name": "Z",
                "position": 2,
                "stddev": 4.439236869,
                "variance": 19.70682398
              },
              {
                "average": 36458.32926,
                "count": 6154219,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13556.54372,
                "variance": 183779877.7
              },
              {
                "average": 1.014526295,
                "count": 6154219,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1240027009,
                "variance": 0.01537666984
              },
              {
                "average": 1.029069976,
                "count": 6154219,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.177225139,
                "variance": 0.03140874991
              },
              {
                "average": 0.5077341252,
                "count": 6154219,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999402203,
                "variance": 0.2499402239
              },
              {
                "average": 0.0002876075746,
                "count": 6154219,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0169565593,
                "variance": 0.0002875249032
              },
              {
                "average": 2.326090281,
                "count": 6154219,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.624345826,
                "variance": 6.887191015
              },
              {
                "average": -3.209011461,
                "count": 6154219,
                "maximum": 16.26600075,
                "minimum": -19.77000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.26184538,
                "variance": 105.3054706
              },
              {
                "average": 0.4990319649,
                "count": 6154219,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999991035,
                "variance": 0.2499991035
              },
              {
                "average": 660.7284827,
                "count": 6154219,
                "maximum": 708,
                "minimum": 651,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.86730485,
                "variance": 319.2405826
              },
              {
                "average": 222295356.9,
                "count": 6154219,
                "maximum": 222298833.6,
                "minimum": 222294338.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1387.166384,
                "variance": 1924230.576
              },
              {
                "average": 0.4990319649,
                "count": 6154219,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999991035,
                "variance": 0.2499991035
              },
              {
                "average": 0,
                "count": 6154219,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6154219,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6154219,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2198397555,
                "count": 6154219,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4141379785,
                "variance": 0.1715102652
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130488.4839,
              2280802.581,
              6.151194367,
              -129995.6639,
              2281278.241,
              50.69119437
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130488.48393183653,
                    2280802.58107497,
                    6.151194366862757
                  ],
                  [
                    -130488.48393183653,
                    2281278.24107497,
                    6.151194366862757
                  ],
                  [
                    -129995.66393183652,
                    2281278.24107497,
                    50.69119436686276
                  ],
                  [
                    -129995.66393183652,
                    2280802.58107497,
                    50.69119436686276
                  ],
                  [
                    -130488.48393183653,
                    2280802.58107497,
                    6.151194366862757
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:13+00:00",
            "end_time": "2018-09-29T22:12:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0336.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4067514077576,
              70.48416266276658,
              11.796752660264367
            ],
            [
              -157.4073926627142,
              70.48850450288015,
              11.796752660264367
            ],
            [
              -157.39445019539545,
              70.48873511450964,
              16.39675266026437
            ],
            [
              -157.3938113676449,
              70.48439322523674,
              16.39675266026437
            ],
            [
              -157.4067514077576,
              70.48416266276658,
              11.796752660264367
            ]
          ]
        ]
      },
      "bbox": [
        -157.4073927,
        70.48416266,
        11.79675266,
        -157.3938114,
        70.48873511,
        16.39675266
      ],
      "properties": {
        "datetime": "2018-09-29T23:36:42Z",
        "pc:count": 4580816,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129273.885,
            "count": 4580816,
            "maximum": -129037.2023,
            "minimum": -129530.0623,
            "name": "X",
            "position": 0,
            "stddev": 133.0332248,
            "variance": 17697.8389
          },
          {
            "average": 2281420.37,
            "count": 4580816,
            "maximum": 2281669.18,
            "minimum": 2281193.56,
            "name": "Y",
            "position": 1,
            "stddev": 122.1426235,
            "variance": 14918.82047
          },
          {
            "average": 15.17757422,
            "count": 4580816,
            "maximum": 16.39675266,
            "minimum": 11.79675266,
            "name": "Z",
            "position": 2,
            "stddev": 0.570457001,
            "variance": 0.32542119
          },
          {
            "average": 35717.88259,
            "count": 4580816,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 16590.33575,
            "variance": 275239240.2
          },
          {
            "average": 1,
            "count": 4580816,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4580816,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5044869735,
            "count": 4580816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999799212,
            "variance": 0.2499799216
          },
          {
            "average": 0.0002735320519,
            "count": 4580816,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01653654413,
            "variance": 0.0002734572918
          },
          {
            "average": 1.248090733,
            "count": 4580816,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4330178666,
            "variance": 0.1875044728
          },
          {
            "average": -1.978692033,
            "count": 4580816,
            "maximum": 16.41600037,
            "minimum": -19.7159996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.83821945,
            "variance": 96.79056195
          },
          {
            "average": 0.490591196,
            "count": 4580816,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999115211,
            "variance": 0.249911529
          },
          {
            "average": 661.6119213,
            "count": 4580816,
            "maximum": 710,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.50718166,
            "variance": 506.5732261
          },
          {
            "average": 222295221.3,
            "count": 4580816,
            "maximum": 222299402.5,
            "minimum": 222294142,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1891.187263,
            "variance": 3576589.264
          },
          {
            "average": 0.490591196,
            "count": 4580816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999115211,
            "variance": 0.249911529
          },
          {
            "average": 0,
            "count": 4580816,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4580816,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4580816,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1647075543,
            "count": 4580816,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3709164406,
            "variance": 0.1375790059
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129530.0623,
          2281193.56,
          11.79675266,
          -129037.2023,
          2281669.18,
          16.39675266
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129530.06225088594,
                2281193.5601225076,
                11.796752660264367
              ],
              [
                -129530.06225088594,
                2281669.1801225077,
                11.796752660264367
              ],
              [
                -129037.20225088595,
                2281669.1801225077,
                16.39675266026437
              ],
              [
                -129037.20225088595,
                2281193.5601225076,
                16.39675266026437
              ],
              [
                -129530.06225088594,
                2281193.5601225076,
                11.796752660264367
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:36:42+00:00",
        "end_time": "2018-09-29T22:09:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0336.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0336.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0336.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0336.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4073927,
            70.48416266,
            11.79675266,
            -157.3938114,
            70.48873511,
            16.39675266
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4067514077576,
                  70.48416266276658,
                  11.796752660264367
                ],
                [
                  -157.4073926627142,
                  70.48850450288015,
                  11.796752660264367
                ],
                [
                  -157.39445019539545,
                  70.48873511450964,
                  16.39675266026437
                ],
                [
                  -157.3938113676449,
                  70.48439322523674,
                  16.39675266026437
                ],
                [
                  -157.4067514077576,
                  70.48416266276658,
                  11.796752660264367
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0336.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0336.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:36:42Z",
            "pc:count": 4580816,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129273.885,
                "count": 4580816,
                "maximum": -129037.2023,
                "minimum": -129530.0623,
                "name": "X",
                "position": 0,
                "stddev": 133.0332248,
                "variance": 17697.8389
              },
              {
                "average": 2281420.37,
                "count": 4580816,
                "maximum": 2281669.18,
                "minimum": 2281193.56,
                "name": "Y",
                "position": 1,
                "stddev": 122.1426235,
                "variance": 14918.82047
              },
              {
                "average": 15.17757422,
                "count": 4580816,
                "maximum": 16.39675266,
                "minimum": 11.79675266,
                "name": "Z",
                "position": 2,
                "stddev": 0.570457001,
                "variance": 0.32542119
              },
              {
                "average": 35717.88259,
                "count": 4580816,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 16590.33575,
                "variance": 275239240.2
              },
              {
                "average": 1,
                "count": 4580816,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4580816,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5044869735,
                "count": 4580816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999799212,
                "variance": 0.2499799216
              },
              {
                "average": 0.0002735320519,
                "count": 4580816,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01653654413,
                "variance": 0.0002734572918
              },
              {
                "average": 1.248090733,
                "count": 4580816,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4330178666,
                "variance": 0.1875044728
              },
              {
                "average": -1.978692033,
                "count": 4580816,
                "maximum": 16.41600037,
                "minimum": -19.7159996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.83821945,
                "variance": 96.79056195
              },
              {
                "average": 0.490591196,
                "count": 4580816,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999115211,
                "variance": 0.249911529
              },
              {
                "average": 661.6119213,
                "count": 4580816,
                "maximum": 710,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.50718166,
                "variance": 506.5732261
              },
              {
                "average": 222295221.3,
                "count": 4580816,
                "maximum": 222299402.5,
                "minimum": 222294142,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1891.187263,
                "variance": 3576589.264
              },
              {
                "average": 0.490591196,
                "count": 4580816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999115211,
                "variance": 0.249911529
              },
              {
                "average": 0,
                "count": 4580816,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4580816,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4580816,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1647075543,
                "count": 4580816,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3709164406,
                "variance": 0.1375790059
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129530.0623,
              2281193.56,
              11.79675266,
              -129037.2023,
              2281669.18,
              16.39675266
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129530.06225088594,
                    2281193.5601225076,
                    11.796752660264367
                  ],
                  [
                    -129530.06225088594,
                    2281669.1801225077,
                    11.796752660264367
                  ],
                  [
                    -129037.20225088595,
                    2281669.1801225077,
                    16.39675266026437
                  ],
                  [
                    -129037.20225088595,
                    2281193.5601225076,
                    16.39675266026437
                  ],
                  [
                    -129530.06225088594,
                    2281193.5601225076,
                    11.796752660264367
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:36:42+00:00",
            "end_time": "2018-09-29T22:09:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1506.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.87462759400486,
              71.23582495924686,
              9.970634982539035
            ],
            [
              -156.87518483108028,
              71.24017249124603,
              9.970634982539035
            ],
            [
              -156.86173163433216,
              71.2403689737847,
              19.410634982539033
            ],
            [
              -156.86117699813724,
              71.23602139802242,
              19.410634982539033
            ],
            [
              -156.87462759400486,
              71.23582495924686,
              9.970634982539035
            ]
          ]
        ]
      },
      "bbox": [
        -156.8751848,
        71.23582496,
        9.970634983,
        -156.861177,
        71.24036897,
        19.41063498
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:51Z",
        "pc:count": 3966738,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105509.0204,
            "count": 3966738,
            "maximum": -105265.9693,
            "minimum": -105761.4493,
            "name": "X",
            "position": 0,
            "stddev": 136.4831069,
            "variance": 18627.63847
          },
          {
            "average": 2362438.618,
            "count": 3966738,
            "maximum": 2362678.552,
            "minimum": 2362204.712,
            "name": "Y",
            "position": 1,
            "stddev": 126.798971,
            "variance": 16077.97905
          },
          {
            "average": 12.04468056,
            "count": 3966738,
            "maximum": 19.41063498,
            "minimum": 9.970634983,
            "name": "Z",
            "position": 2,
            "stddev": 0.711789454,
            "variance": 0.5066442269
          },
          {
            "average": 48983.40672,
            "count": 3966738,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8326.818095,
            "variance": 69335899.58
          },
          {
            "average": 1.000002269,
            "count": 3966738,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001506274273,
            "variance": 2.268862186e-06
          },
          {
            "average": 1.000004538,
            "count": 3966738,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002130191089,
            "variance": 4.537714076e-06
          },
          {
            "average": 0.5065537477,
            "count": 3966738,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999571096,
            "variance": 0.2499571114
          },
          {
            "average": 0.0004310846847,
            "count": 3966738,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02075810587,
            "variance": 0.0004308989593
          },
          {
            "average": 1.271471673,
            "count": 3966738,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4463687708,
            "variance": 0.1992450795
          },
          {
            "average": -1.958010322,
            "count": 3966738,
            "maximum": 16.40399933,
            "minimum": -19.77000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.94293352,
            "variance": 119.747794
          },
          {
            "average": 0.5044668945,
            "count": 3966738,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999801095,
            "variance": 0.2499801099
          },
          {
            "average": 425.6938084,
            "count": 3966738,
            "maximum": 467,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.58267273,
            "variance": 556.1424529
          },
          {
            "average": 220495908.4,
            "count": 3966738,
            "maximum": 220727291.2,
            "minimum": 220417109.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133704.7615,
            "variance": 17876963250.0
          },
          {
            "average": 0.5044668945,
            "count": 3966738,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999801095,
            "variance": 0.2499801099
          },
          {
            "average": 0,
            "count": 3966738,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3966738,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3966738,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2189607683,
            "count": 3966738,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4135420092,
            "variance": 0.1710169933
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105761.4493,
          2362204.712,
          9.970634983,
          -105265.9693,
          2362678.552,
          19.41063498
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105761.44926098436,
                2362204.7117856164,
                9.970634982539035
              ],
              [
                -105761.44926098436,
                2362678.551785616,
                9.970634982539035
              ],
              [
                -105265.96926098435,
                2362678.551785616,
                19.410634982539033
              ],
              [
                -105265.96926098435,
                2362204.7117856164,
                19.410634982539033
              ],
              [
                -105761.44926098436,
                2362204.7117856164,
                9.970634982539035
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:51+00:00",
        "end_time": "2018-09-08T04:45:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1506.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1506.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1506.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1506.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8751848,
            71.23582496,
            9.970634983,
            -156.861177,
            71.24036897,
            19.41063498
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.87462759400486,
                  71.23582495924686,
                  9.970634982539035
                ],
                [
                  -156.87518483108028,
                  71.24017249124603,
                  9.970634982539035
                ],
                [
                  -156.86173163433216,
                  71.2403689737847,
                  19.410634982539033
                ],
                [
                  -156.86117699813724,
                  71.23602139802242,
                  19.410634982539033
                ],
                [
                  -156.87462759400486,
                  71.23582495924686,
                  9.970634982539035
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1506.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1506.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:51Z",
            "pc:count": 3966738,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105509.0204,
                "count": 3966738,
                "maximum": -105265.9693,
                "minimum": -105761.4493,
                "name": "X",
                "position": 0,
                "stddev": 136.4831069,
                "variance": 18627.63847
              },
              {
                "average": 2362438.618,
                "count": 3966738,
                "maximum": 2362678.552,
                "minimum": 2362204.712,
                "name": "Y",
                "position": 1,
                "stddev": 126.798971,
                "variance": 16077.97905
              },
              {
                "average": 12.04468056,
                "count": 3966738,
                "maximum": 19.41063498,
                "minimum": 9.970634983,
                "name": "Z",
                "position": 2,
                "stddev": 0.711789454,
                "variance": 0.5066442269
              },
              {
                "average": 48983.40672,
                "count": 3966738,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8326.818095,
                "variance": 69335899.58
              },
              {
                "average": 1.000002269,
                "count": 3966738,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001506274273,
                "variance": 2.268862186e-06
              },
              {
                "average": 1.000004538,
                "count": 3966738,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002130191089,
                "variance": 4.537714076e-06
              },
              {
                "average": 0.5065537477,
                "count": 3966738,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999571096,
                "variance": 0.2499571114
              },
              {
                "average": 0.0004310846847,
                "count": 3966738,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02075810587,
                "variance": 0.0004308989593
              },
              {
                "average": 1.271471673,
                "count": 3966738,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4463687708,
                "variance": 0.1992450795
              },
              {
                "average": -1.958010322,
                "count": 3966738,
                "maximum": 16.40399933,
                "minimum": -19.77000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.94293352,
                "variance": 119.747794
              },
              {
                "average": 0.5044668945,
                "count": 3966738,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999801095,
                "variance": 0.2499801099
              },
              {
                "average": 425.6938084,
                "count": 3966738,
                "maximum": 467,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.58267273,
                "variance": 556.1424529
              },
              {
                "average": 220495908.4,
                "count": 3966738,
                "maximum": 220727291.2,
                "minimum": 220417109.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133704.7615,
                "variance": 17876963250.0
              },
              {
                "average": 0.5044668945,
                "count": 3966738,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999801095,
                "variance": 0.2499801099
              },
              {
                "average": 0,
                "count": 3966738,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3966738,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3966738,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2189607683,
                "count": 3966738,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4135420092,
                "variance": 0.1710169933
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105761.4493,
              2362204.712,
              9.970634983,
              -105265.9693,
              2362678.552,
              19.41063498
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105761.44926098436,
                    2362204.7117856164,
                    9.970634982539035
                  ],
                  [
                    -105761.44926098436,
                    2362678.551785616,
                    9.970634982539035
                  ],
                  [
                    -105265.96926098435,
                    2362678.551785616,
                    19.410634982539033
                  ],
                  [
                    -105265.96926098435,
                    2362204.7117856164,
                    19.410634982539033
                  ],
                  [
                    -105761.44926098436,
                    2362204.7117856164,
                    9.970634982539035
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:51+00:00",
            "end_time": "2018-09-08T04:45:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0288.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.43149813253527,
              70.4760446934741,
              20.16125817010699
            ],
            [
              -157.43214386871483,
              70.4803866113986,
              20.16125817010699
            ],
            [
              -157.4192067233598,
              70.48061887972898,
              45.041258170106985
            ],
            [
              -157.4185634125996,
              70.47627691231342,
              45.041258170106985
            ],
            [
              -157.43149813253527,
              70.4760446934741,
              20.16125817010699
            ]
          ]
        ]
      },
      "bbox": [
        -157.4321439,
        70.47604469,
        20.16125817,
        -157.4185634,
        70.48061888,
        45.04125817
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:20Z",
        "pc:count": 6106093,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130286.7253,
            "count": 6106093,
            "maximum": -130023.1672,
            "minimum": -130516.0072,
            "name": "X",
            "position": 0,
            "stddev": 129.6056685,
            "variance": 16797.62931
          },
          {
            "average": 2280588.912,
            "count": 6106093,
            "maximum": 2280830.715,
            "minimum": 2280355.055,
            "name": "Y",
            "position": 1,
            "stddev": 128.2533171,
            "variance": 16448.91334
          },
          {
            "average": 24.28377117,
            "count": 6106093,
            "maximum": 45.04125817,
            "minimum": 20.16125817,
            "name": "Z",
            "position": 2,
            "stddev": 3.561083356,
            "variance": 12.68131467
          },
          {
            "average": 38952.94262,
            "count": 6106093,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10363.86072,
            "variance": 107409609
          },
          {
            "average": 1.004322404,
            "count": 6106093,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06726428867,
            "variance": 0.00452448453
          },
          {
            "average": 1.008648902,
            "count": 6106093,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09609931913,
            "variance": 0.009235079137
          },
          {
            "average": 0.5064578938,
            "count": 6106093,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999583348,
            "variance": 0.2499583365
          },
          {
            "average": 0.0003005194975,
            "count": 6106093,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01733289459,
            "variance": 0.0003004292347
          },
          {
            "average": 1.300904195,
            "count": 6106093,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7440897204,
            "variance": 0.553669512
          },
          {
            "average": -2.588104863,
            "count": 6106093,
            "maximum": 16.35000038,
            "minimum": -19.79999924,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.441437,
            "variance": 109.0236066
          },
          {
            "average": 0.4920011864,
            "count": 6106093,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999360558,
            "variance": 0.2499360599
          },
          {
            "average": 662.7360527,
            "count": 6106093,
            "maximum": 708,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.17227781,
            "variance": 330.2316808
          },
          {
            "average": 222295617.9,
            "count": 6106093,
            "maximum": 222298840,
            "minimum": 222294505.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1334.021256,
            "variance": 1779612.711
          },
          {
            "average": 0.4920011864,
            "count": 6106093,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999360558,
            "variance": 0.2499360599
          },
          {
            "average": 0,
            "count": 6106093,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6106093,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6106093,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2356095788,
            "count": 6106093,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4243792345,
            "variance": 0.1800977347
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130516.0072,
          2280355.055,
          20.16125817,
          -130023.1672,
          2280830.715,
          45.04125817
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130516.00716311122,
                2280355.055237038,
                20.16125817010699
              ],
              [
                -130516.00716311122,
                2280830.715237038,
                20.16125817010699
              ],
              [
                -130023.16716311123,
                2280830.715237038,
                45.041258170106985
              ],
              [
                -130023.16716311123,
                2280355.055237038,
                45.041258170106985
              ],
              [
                -130516.00716311122,
                2280355.055237038,
                20.16125817010699
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:20+00:00",
        "end_time": "2018-09-29T22:15:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0288.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0288.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0288.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0288.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4321439,
            70.47604469,
            20.16125817,
            -157.4185634,
            70.48061888,
            45.04125817
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.43149813253527,
                  70.4760446934741,
                  20.16125817010699
                ],
                [
                  -157.43214386871483,
                  70.4803866113986,
                  20.16125817010699
                ],
                [
                  -157.4192067233598,
                  70.48061887972898,
                  45.041258170106985
                ],
                [
                  -157.4185634125996,
                  70.47627691231342,
                  45.041258170106985
                ],
                [
                  -157.43149813253527,
                  70.4760446934741,
                  20.16125817010699
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0288.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0288.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:20Z",
            "pc:count": 6106093,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130286.7253,
                "count": 6106093,
                "maximum": -130023.1672,
                "minimum": -130516.0072,
                "name": "X",
                "position": 0,
                "stddev": 129.6056685,
                "variance": 16797.62931
              },
              {
                "average": 2280588.912,
                "count": 6106093,
                "maximum": 2280830.715,
                "minimum": 2280355.055,
                "name": "Y",
                "position": 1,
                "stddev": 128.2533171,
                "variance": 16448.91334
              },
              {
                "average": 24.28377117,
                "count": 6106093,
                "maximum": 45.04125817,
                "minimum": 20.16125817,
                "name": "Z",
                "position": 2,
                "stddev": 3.561083356,
                "variance": 12.68131467
              },
              {
                "average": 38952.94262,
                "count": 6106093,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10363.86072,
                "variance": 107409609
              },
              {
                "average": 1.004322404,
                "count": 6106093,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06726428867,
                "variance": 0.00452448453
              },
              {
                "average": 1.008648902,
                "count": 6106093,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09609931913,
                "variance": 0.009235079137
              },
              {
                "average": 0.5064578938,
                "count": 6106093,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999583348,
                "variance": 0.2499583365
              },
              {
                "average": 0.0003005194975,
                "count": 6106093,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01733289459,
                "variance": 0.0003004292347
              },
              {
                "average": 1.300904195,
                "count": 6106093,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7440897204,
                "variance": 0.553669512
              },
              {
                "average": -2.588104863,
                "count": 6106093,
                "maximum": 16.35000038,
                "minimum": -19.79999924,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.441437,
                "variance": 109.0236066
              },
              {
                "average": 0.4920011864,
                "count": 6106093,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999360558,
                "variance": 0.2499360599
              },
              {
                "average": 662.7360527,
                "count": 6106093,
                "maximum": 708,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.17227781,
                "variance": 330.2316808
              },
              {
                "average": 222295617.9,
                "count": 6106093,
                "maximum": 222298840,
                "minimum": 222294505.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1334.021256,
                "variance": 1779612.711
              },
              {
                "average": 0.4920011864,
                "count": 6106093,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999360558,
                "variance": 0.2499360599
              },
              {
                "average": 0,
                "count": 6106093,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6106093,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6106093,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2356095788,
                "count": 6106093,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4243792345,
                "variance": 0.1800977347
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130516.0072,
              2280355.055,
              20.16125817,
              -130023.1672,
              2280830.715,
              45.04125817
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130516.00716311122,
                    2280355.055237038,
                    20.16125817010699
                  ],
                  [
                    -130516.00716311122,
                    2280830.715237038,
                    20.16125817010699
                  ],
                  [
                    -130023.16716311123,
                    2280830.715237038,
                    45.041258170106985
                  ],
                  [
                    -130023.16716311123,
                    2280355.055237038,
                    45.041258170106985
                  ],
                  [
                    -130516.00716311122,
                    2280355.055237038,
                    20.16125817010699
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:20+00:00",
            "end_time": "2018-09-29T22:15:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1401.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79876452221683,
              71.22715874370913,
              11.197313467308076
            ],
            [
              -156.79930680708713,
              71.23150586946944,
              11.197313467308076
            ],
            [
              -156.78585543583208,
              71.23169718524139,
              21.317313467308075
            ],
            [
              -156.78531575064676,
              71.22735001689401,
              21.317313467308075
            ],
            [
              -156.79876452221683,
              71.22715874370913,
              11.197313467308076
            ]
          ]
        ]
      },
      "bbox": [
        -156.7993068,
        71.22715874,
        11.19731347,
        -156.7853158,
        71.23169719,
        21.31731347
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:25Z",
        "pc:count": 3854273,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102775.8535,
            "count": 3854273,
            "maximum": -102516.1972,
            "minimum": -103011.7772,
            "name": "X",
            "position": 0,
            "stddev": 134.7689334,
            "variance": 18162.66541
          },
          {
            "average": 2361391.482,
            "count": 3854273,
            "maximum": 2361616.437,
            "minimum": 2361142.637,
            "name": "Y",
            "position": 1,
            "stddev": 124.9620187,
            "variance": 15615.50612
          },
          {
            "average": 17.53009927,
            "count": 3854273,
            "maximum": 21.31731347,
            "minimum": 11.19731347,
            "name": "Z",
            "position": 2,
            "stddev": 2.35292014,
            "variance": 5.536233183
          },
          {
            "average": 48001.61142,
            "count": 3854273,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 6414.276493,
            "variance": 41142942.93
          },
          {
            "average": 1,
            "count": 3854273,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3854273,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4945051894,
            "count": 3854273,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499969871,
            "variance": 0.2499698719
          },
          {
            "average": 0.0003894379044,
            "count": 3854273,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01973034068,
            "variance": 0.0003892863435
          },
          {
            "average": 1.237007861,
            "count": 3854273,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4254125116,
            "variance": 0.180975805
          },
          {
            "average": 3.291520325,
            "count": 3854273,
            "maximum": 20.59799957,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44993755,
            "variance": 109.2011949
          },
          {
            "average": 0.5072948906,
            "count": 3854273,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999468466,
            "variance": 0.2499468494
          },
          {
            "average": 431.3931631,
            "count": 3854273,
            "maximum": 468,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.24191393,
            "variance": 451.2189075
          },
          {
            "average": 220500277,
            "count": 3854273,
            "maximum": 220727505.8,
            "minimum": 220421299.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133191.0619,
            "variance": 17739858970.0
          },
          {
            "average": 0.5072948906,
            "count": 3854273,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999468466,
            "variance": 0.2499468494
          },
          {
            "average": 0,
            "count": 3854273,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3854273,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3854273,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1964806333,
            "count": 3854273,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3973361738,
            "variance": 0.157876035
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103011.7772,
          2361142.637,
          11.19731347,
          -102516.1972,
          2361616.437,
          21.31731347
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103011.77719092795,
                2361142.6369309244,
                11.197313467308076
              ],
              [
                -103011.77719092795,
                2361616.436930924,
                11.197313467308076
              ],
              [
                -102516.19719092797,
                2361616.436930924,
                21.317313467308075
              ],
              [
                -102516.19719092797,
                2361142.6369309244,
                21.317313467308075
              ],
              [
                -103011.77719092795,
                2361142.6369309244,
                11.197313467308076
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:25+00:00",
        "end_time": "2018-09-08T05:54:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1401.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1401.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1401.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1401.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7993068,
            71.22715874,
            11.19731347,
            -156.7853158,
            71.23169719,
            21.31731347
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79876452221683,
                  71.22715874370913,
                  11.197313467308076
                ],
                [
                  -156.79930680708713,
                  71.23150586946944,
                  11.197313467308076
                ],
                [
                  -156.78585543583208,
                  71.23169718524139,
                  21.317313467308075
                ],
                [
                  -156.78531575064676,
                  71.22735001689401,
                  21.317313467308075
                ],
                [
                  -156.79876452221683,
                  71.22715874370913,
                  11.197313467308076
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1401.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1401.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:25Z",
            "pc:count": 3854273,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102775.8535,
                "count": 3854273,
                "maximum": -102516.1972,
                "minimum": -103011.7772,
                "name": "X",
                "position": 0,
                "stddev": 134.7689334,
                "variance": 18162.66541
              },
              {
                "average": 2361391.482,
                "count": 3854273,
                "maximum": 2361616.437,
                "minimum": 2361142.637,
                "name": "Y",
                "position": 1,
                "stddev": 124.9620187,
                "variance": 15615.50612
              },
              {
                "average": 17.53009927,
                "count": 3854273,
                "maximum": 21.31731347,
                "minimum": 11.19731347,
                "name": "Z",
                "position": 2,
                "stddev": 2.35292014,
                "variance": 5.536233183
              },
              {
                "average": 48001.61142,
                "count": 3854273,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 6414.276493,
                "variance": 41142942.93
              },
              {
                "average": 1,
                "count": 3854273,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3854273,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4945051894,
                "count": 3854273,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499969871,
                "variance": 0.2499698719
              },
              {
                "average": 0.0003894379044,
                "count": 3854273,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01973034068,
                "variance": 0.0003892863435
              },
              {
                "average": 1.237007861,
                "count": 3854273,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4254125116,
                "variance": 0.180975805
              },
              {
                "average": 3.291520325,
                "count": 3854273,
                "maximum": 20.59799957,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44993755,
                "variance": 109.2011949
              },
              {
                "average": 0.5072948906,
                "count": 3854273,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999468466,
                "variance": 0.2499468494
              },
              {
                "average": 431.3931631,
                "count": 3854273,
                "maximum": 468,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.24191393,
                "variance": 451.2189075
              },
              {
                "average": 220500277,
                "count": 3854273,
                "maximum": 220727505.8,
                "minimum": 220421299.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133191.0619,
                "variance": 17739858970.0
              },
              {
                "average": 0.5072948906,
                "count": 3854273,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999468466,
                "variance": 0.2499468494
              },
              {
                "average": 0,
                "count": 3854273,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3854273,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3854273,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1964806333,
                "count": 3854273,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3973361738,
                "variance": 0.157876035
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103011.7772,
              2361142.637,
              11.19731347,
              -102516.1972,
              2361616.437,
              21.31731347
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103011.77719092795,
                    2361142.6369309244,
                    11.197313467308076
                  ],
                  [
                    -103011.77719092795,
                    2361616.436930924,
                    11.197313467308076
                  ],
                  [
                    -102516.19719092797,
                    2361616.436930924,
                    21.317313467308075
                  ],
                  [
                    -102516.19719092797,
                    2361142.6369309244,
                    21.317313467308075
                  ],
                  [
                    -103011.77719092795,
                    2361142.6369309244,
                    11.197313467308076
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:25+00:00",
            "end_time": "2018-09-08T05:54:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0240.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.45622224812772,
              70.467923206845,
              20.14707628136372
            ],
            [
              -157.45687245871432,
              70.47226520225298,
              20.14707628136372
            ],
            [
              -157.44394378420085,
              70.47249906858717,
              30.027076281363723
            ],
            [
              -157.44329599665667,
              70.46815702336934,
              30.027076281363723
            ],
            [
              -157.45622224812772,
              70.467923206845,
              20.14707628136372
            ]
          ]
        ]
      },
      "bbox": [
        -157.4568725,
        70.46792321,
        20.14707628,
        -157.443296,
        70.47249907,
        30.02707628
      ],
      "properties": {
        "datetime": "2018-09-29T23:22:03Z",
        "pc:count": 4212220,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131241.3056,
            "count": 4212220,
            "maximum": -131009.0577,
            "minimum": -131501.7577,
            "name": "X",
            "position": 0,
            "stddev": 134.4728867,
            "variance": 18082.95725
          },
          {
            "average": 2279731.577,
            "count": 4212220,
            "maximum": 2279992.164,
            "minimum": 2279516.464,
            "name": "Y",
            "position": 1,
            "stddev": 133.4844187,
            "variance": 17818.09003
          },
          {
            "average": 23.68852045,
            "count": 4212220,
            "maximum": 30.02707628,
            "minimum": 20.14707628,
            "name": "Z",
            "position": 2,
            "stddev": 3.767062294,
            "variance": 14.19075833
          },
          {
            "average": 29935.64592,
            "count": 4212220,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 19645.36171,
            "variance": 385940236.7
          },
          {
            "average": 1.000017093,
            "count": 4212220,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004134348337,
            "variance": 1.709283617e-05
          },
          {
            "average": 1.000034186,
            "count": 4212220,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005846801519,
            "variance": 3.4185088e-05
          },
          {
            "average": 0.4947861223,
            "count": 4212220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999728741,
            "variance": 0.2499728748
          },
          {
            "average": 0.000381509038,
            "count": 4212220,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01952853244,
            "variance": 0.0003813635794
          },
          {
            "average": 4.823236678,
            "count": 4212220,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.857906577,
            "variance": 14.88344315
          },
          {
            "average": 2.637956417,
            "count": 4212220,
            "maximum": 20.31599998,
            "minimum": -16.03800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.710506923,
            "variance": 94.2939447
          },
          {
            "average": 0.4967594285,
            "count": 4212220,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999895579,
            "variance": 0.249989558
          },
          {
            "average": 666.9928831,
            "count": 4212220,
            "maximum": 707,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.3193273,
            "variance": 373.2364074
          },
          {
            "average": 222296021.7,
            "count": 4212220,
            "maximum": 222298523,
            "minimum": 222295174.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1156.321668,
            "variance": 1337079.799
          },
          {
            "average": 0.4967594285,
            "count": 4212220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999895579,
            "variance": 0.249989558
          },
          {
            "average": 0,
            "count": 4212220,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4212220,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4212220,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1395672591,
            "count": 4212220,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3465375417,
            "variance": 0.1200882678
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131501.7577,
          2279516.464,
          20.14707628,
          -131009.0577,
          2279992.164,
          30.02707628
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131501.75769095315,
                2279516.4642616003,
                20.14707628136372
              ],
              [
                -131501.75769095315,
                2279992.1642616005,
                20.14707628136372
              ],
              [
                -131009.05769095314,
                2279992.1642616005,
                30.027076281363723
              ],
              [
                -131009.05769095314,
                2279516.4642616003,
                30.027076281363723
              ],
              [
                -131501.75769095315,
                2279516.4642616003,
                20.14707628136372
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:22:03+00:00",
        "end_time": "2018-09-29T22:26:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0240.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0240.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0240.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0240.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4568725,
            70.46792321,
            20.14707628,
            -157.443296,
            70.47249907,
            30.02707628
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.45622224812772,
                  70.467923206845,
                  20.14707628136372
                ],
                [
                  -157.45687245871432,
                  70.47226520225298,
                  20.14707628136372
                ],
                [
                  -157.44394378420085,
                  70.47249906858717,
                  30.027076281363723
                ],
                [
                  -157.44329599665667,
                  70.46815702336934,
                  30.027076281363723
                ],
                [
                  -157.45622224812772,
                  70.467923206845,
                  20.14707628136372
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0240.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0240.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:22:03Z",
            "pc:count": 4212220,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131241.3056,
                "count": 4212220,
                "maximum": -131009.0577,
                "minimum": -131501.7577,
                "name": "X",
                "position": 0,
                "stddev": 134.4728867,
                "variance": 18082.95725
              },
              {
                "average": 2279731.577,
                "count": 4212220,
                "maximum": 2279992.164,
                "minimum": 2279516.464,
                "name": "Y",
                "position": 1,
                "stddev": 133.4844187,
                "variance": 17818.09003
              },
              {
                "average": 23.68852045,
                "count": 4212220,
                "maximum": 30.02707628,
                "minimum": 20.14707628,
                "name": "Z",
                "position": 2,
                "stddev": 3.767062294,
                "variance": 14.19075833
              },
              {
                "average": 29935.64592,
                "count": 4212220,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 19645.36171,
                "variance": 385940236.7
              },
              {
                "average": 1.000017093,
                "count": 4212220,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004134348337,
                "variance": 1.709283617e-05
              },
              {
                "average": 1.000034186,
                "count": 4212220,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005846801519,
                "variance": 3.4185088e-05
              },
              {
                "average": 0.4947861223,
                "count": 4212220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999728741,
                "variance": 0.2499728748
              },
              {
                "average": 0.000381509038,
                "count": 4212220,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01952853244,
                "variance": 0.0003813635794
              },
              {
                "average": 4.823236678,
                "count": 4212220,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.857906577,
                "variance": 14.88344315
              },
              {
                "average": 2.637956417,
                "count": 4212220,
                "maximum": 20.31599998,
                "minimum": -16.03800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.710506923,
                "variance": 94.2939447
              },
              {
                "average": 0.4967594285,
                "count": 4212220,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999895579,
                "variance": 0.249989558
              },
              {
                "average": 666.9928831,
                "count": 4212220,
                "maximum": 707,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.3193273,
                "variance": 373.2364074
              },
              {
                "average": 222296021.7,
                "count": 4212220,
                "maximum": 222298523,
                "minimum": 222295174.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1156.321668,
                "variance": 1337079.799
              },
              {
                "average": 0.4967594285,
                "count": 4212220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999895579,
                "variance": 0.249989558
              },
              {
                "average": 0,
                "count": 4212220,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4212220,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4212220,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1395672591,
                "count": 4212220,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3465375417,
                "variance": 0.1200882678
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131501.7577,
              2279516.464,
              20.14707628,
              -131009.0577,
              2279992.164,
              30.02707628
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131501.75769095315,
                    2279516.4642616003,
                    20.14707628136372
                  ],
                  [
                    -131501.75769095315,
                    2279992.1642616005,
                    20.14707628136372
                  ],
                  [
                    -131009.05769095314,
                    2279992.1642616005,
                    30.027076281363723
                  ],
                  [
                    -131009.05769095314,
                    2279516.4642616003,
                    30.027076281363723
                  ],
                  [
                    -131501.75769095315,
                    2279516.4642616003,
                    20.14707628136372
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:22:03+00:00",
            "end_time": "2018-09-29T22:26:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0337.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.39449273308594,
              70.48412163692929,
              14.930305842666499
            ],
            [
              -157.39513178895598,
              70.48846424741431,
              14.930305842666499
            ],
            [
              -157.3821902726016,
              70.48869400970372,
              18.7903058426665
            ],
            [
              -157.3815536442322,
              70.48435135023182,
              18.7903058426665
            ],
            [
              -157.39449273308594,
              70.48412163692929,
              14.930305842666499
            ]
          ]
        ]
      },
      "bbox": [
        -157.3951318,
        70.48412164,
        14.93030584,
        -157.3815536,
        70.48869401,
        18.79030584
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:41Z",
        "pc:count": 4619608,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128826.4857,
            "count": 4619608,
            "maximum": -128571.7841,
            "minimum": -129064.6041,
            "name": "X",
            "position": 0,
            "stddev": 134.9411691,
            "variance": 18209.11912
          },
          {
            "average": 2281395.066,
            "count": 4619608,
            "maximum": 2281640.911,
            "minimum": 2281165.211,
            "name": "Y",
            "position": 1,
            "stddev": 122.5475807,
            "variance": 15017.90954
          },
          {
            "average": 16.08197232,
            "count": 4619608,
            "maximum": 18.79030584,
            "minimum": 14.93030584,
            "name": "Z",
            "position": 2,
            "stddev": 0.9269572725,
            "variance": 0.859249785
          },
          {
            "average": 35812.89833,
            "count": 4619608,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 15980.11823,
            "variance": 255364178.5
          },
          {
            "average": 1,
            "count": 4619608,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4619608,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.503424533,
            "count": 4619608,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999883266,
            "variance": 0.2499883267
          },
          {
            "average": 0.0003145288518,
            "count": 4619608,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01773217391,
            "variance": 0.0003144299915
          },
          {
            "average": 1.615754627,
            "count": 4619608,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.734683239,
            "variance": 3.00912594
          },
          {
            "average": -1.592438053,
            "count": 4619608,
            "maximum": 20.52599907,
            "minimum": -19.84199905,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.614503517,
            "variance": 92.43867789
          },
          {
            "average": 0.4932567872,
            "count": 4619608,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999545811,
            "variance": 0.2499545832
          },
          {
            "average": 660.3195888,
            "count": 4619608,
            "maximum": 711,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.5371597,
            "variance": 463.8492478
          },
          {
            "average": 222295124.3,
            "count": 4619608,
            "maximum": 222299701.7,
            "minimum": 222294148.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1844.807956,
            "variance": 3403316.393
          },
          {
            "average": 0.4932567872,
            "count": 4619608,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999545811,
            "variance": 0.2499545832
          },
          {
            "average": 0,
            "count": 4619608,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4619608,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4619608,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1658805249,
            "count": 4619608,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3719733947,
            "variance": 0.1383642063
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129064.6041,
          2281165.211,
          14.93030584,
          -128571.7841,
          2281640.911,
          18.79030584
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129064.60412012498,
                2281165.2110323515,
                14.930305842666499
              ],
              [
                -129064.60412012498,
                2281640.9110323517,
                14.930305842666499
              ],
              [
                -128571.78412012497,
                2281640.9110323517,
                18.7903058426665
              ],
              [
                -128571.78412012497,
                2281165.2110323515,
                18.7903058426665
              ],
              [
                -129064.60412012498,
                2281165.2110323515,
                14.930305842666499
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:41+00:00",
        "end_time": "2018-09-29T22:09:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0337.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0337.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0337.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0337.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3951318,
            70.48412164,
            14.93030584,
            -157.3815536,
            70.48869401,
            18.79030584
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.39449273308594,
                  70.48412163692929,
                  14.930305842666499
                ],
                [
                  -157.39513178895598,
                  70.48846424741431,
                  14.930305842666499
                ],
                [
                  -157.3821902726016,
                  70.48869400970372,
                  18.7903058426665
                ],
                [
                  -157.3815536442322,
                  70.48435135023182,
                  18.7903058426665
                ],
                [
                  -157.39449273308594,
                  70.48412163692929,
                  14.930305842666499
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0337.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0337.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:41Z",
            "pc:count": 4619608,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128826.4857,
                "count": 4619608,
                "maximum": -128571.7841,
                "minimum": -129064.6041,
                "name": "X",
                "position": 0,
                "stddev": 134.9411691,
                "variance": 18209.11912
              },
              {
                "average": 2281395.066,
                "count": 4619608,
                "maximum": 2281640.911,
                "minimum": 2281165.211,
                "name": "Y",
                "position": 1,
                "stddev": 122.5475807,
                "variance": 15017.90954
              },
              {
                "average": 16.08197232,
                "count": 4619608,
                "maximum": 18.79030584,
                "minimum": 14.93030584,
                "name": "Z",
                "position": 2,
                "stddev": 0.9269572725,
                "variance": 0.859249785
              },
              {
                "average": 35812.89833,
                "count": 4619608,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 15980.11823,
                "variance": 255364178.5
              },
              {
                "average": 1,
                "count": 4619608,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4619608,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.503424533,
                "count": 4619608,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999883266,
                "variance": 0.2499883267
              },
              {
                "average": 0.0003145288518,
                "count": 4619608,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01773217391,
                "variance": 0.0003144299915
              },
              {
                "average": 1.615754627,
                "count": 4619608,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.734683239,
                "variance": 3.00912594
              },
              {
                "average": -1.592438053,
                "count": 4619608,
                "maximum": 20.52599907,
                "minimum": -19.84199905,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.614503517,
                "variance": 92.43867789
              },
              {
                "average": 0.4932567872,
                "count": 4619608,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999545811,
                "variance": 0.2499545832
              },
              {
                "average": 660.3195888,
                "count": 4619608,
                "maximum": 711,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.5371597,
                "variance": 463.8492478
              },
              {
                "average": 222295124.3,
                "count": 4619608,
                "maximum": 222299701.7,
                "minimum": 222294148.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1844.807956,
                "variance": 3403316.393
              },
              {
                "average": 0.4932567872,
                "count": 4619608,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999545811,
                "variance": 0.2499545832
              },
              {
                "average": 0,
                "count": 4619608,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4619608,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4619608,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1658805249,
                "count": 4619608,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3719733947,
                "variance": 0.1383642063
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129064.6041,
              2281165.211,
              14.93030584,
              -128571.7841,
              2281640.911,
              18.79030584
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129064.60412012498,
                    2281165.2110323515,
                    14.930305842666499
                  ],
                  [
                    -129064.60412012498,
                    2281640.9110323517,
                    14.930305842666499
                  ],
                  [
                    -128571.78412012497,
                    2281640.9110323517,
                    18.7903058426665
                  ],
                  [
                    -128571.78412012497,
                    2281165.2110323515,
                    18.7903058426665
                  ],
                  [
                    -129064.60412012498,
                    2281165.2110323515,
                    14.930305842666499
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:41+00:00",
            "end_time": "2018-09-29T22:09:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0264.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.44386376993813,
              70.47198398911013,
              20.095855075290963
            ],
            [
              -157.4445117715526,
              70.47632612836473,
              20.095855075290963
            ],
            [
              -157.4315770248506,
              70.47655922912743,
              29.115855075290966
            ],
            [
              -157.4309314479132,
              70.47221704021312,
              29.115855075290966
            ],
            [
              -157.44386376993813,
              70.47198398911013,
              20.095855075290963
            ]
          ]
        ]
      },
      "bbox": [
        -157.4445118,
        70.47198399,
        20.09585508,
        -157.4309314,
        70.47655923,
        29.11585508
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:25Z",
        "pc:count": 4769394,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130754.5521,
            "count": 4769394,
            "maximum": -130516.0977,
            "minimum": -131008.9377,
            "name": "X",
            "position": 0,
            "stddev": 136.6217535,
            "variance": 18665.50352
          },
          {
            "average": 2280167.669,
            "count": 4769394,
            "maximum": 2280411.428,
            "minimum": 2279935.728,
            "name": "Y",
            "position": 1,
            "stddev": 130.0118163,
            "variance": 16903.07238
          },
          {
            "average": 20.73426994,
            "count": 4769394,
            "maximum": 29.11585508,
            "minimum": 20.09585508,
            "name": "Z",
            "position": 2,
            "stddev": 1.636654279,
            "variance": 2.678637228
          },
          {
            "average": 17129.14223,
            "count": 4769394,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 13913.64049,
            "variance": 193589391.6
          },
          {
            "average": 1.000003355,
            "count": 4769394,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001831587656,
            "variance": 3.354713341e-06
          },
          {
            "average": 1.000006709,
            "count": 4769394,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002590251759,
            "variance": 6.709404173e-06
          },
          {
            "average": 0.4980773239,
            "count": 4769394,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999963557,
            "variance": 0.2499963557
          },
          {
            "average": 0.0003302306331,
            "count": 4769394,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01816925012,
            "variance": 0.00033012165
          },
          {
            "average": 7.151055459,
            "count": 4769394,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.318584195,
            "variance": 11.01300106
          },
          {
            "average": 1.221751972,
            "count": 4769394,
            "maximum": 20.30999947,
            "minimum": -19.72200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.41290867,
            "variance": 70.77703229
          },
          {
            "average": 0.4924229368,
            "count": 4769394,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999426372,
            "variance": 0.2499426405
          },
          {
            "average": 663.7083913,
            "count": 4769394,
            "maximum": 708,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.82044084,
            "variance": 282.92723
          },
          {
            "average": 222295828.8,
            "count": 4769394,
            "maximum": 222298845.8,
            "minimum": 222294838.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1127.581653,
            "variance": 1271440.384
          },
          {
            "average": 0.4924229368,
            "count": 4769394,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999426372,
            "variance": 0.2499426405
          },
          {
            "average": 0,
            "count": 4769394,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4769394,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4769394,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08906770965,
            "count": 4769394,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2848414818,
            "variance": 0.08113466976
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131008.9377,
          2279935.728,
          20.09585508,
          -130516.0977,
          2280411.428,
          29.11585508
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131008.93766752594,
                2279935.728252293,
                20.095855075290963
              ],
              [
                -131008.93766752594,
                2280411.4282522933,
                20.095855075290963
              ],
              [
                -130516.09766752594,
                2280411.4282522933,
                29.115855075290966
              ],
              [
                -130516.09766752594,
                2279935.728252293,
                29.115855075290966
              ],
              [
                -131008.93766752594,
                2279935.728252293,
                20.095855075290963
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:25+00:00",
        "end_time": "2018-09-29T22:20:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0264.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0264.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0264.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0264.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4445118,
            70.47198399,
            20.09585508,
            -157.4309314,
            70.47655923,
            29.11585508
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.44386376993813,
                  70.47198398911013,
                  20.095855075290963
                ],
                [
                  -157.4445117715526,
                  70.47632612836473,
                  20.095855075290963
                ],
                [
                  -157.4315770248506,
                  70.47655922912743,
                  29.115855075290966
                ],
                [
                  -157.4309314479132,
                  70.47221704021312,
                  29.115855075290966
                ],
                [
                  -157.44386376993813,
                  70.47198398911013,
                  20.095855075290963
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0264.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0264.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:25Z",
            "pc:count": 4769394,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130754.5521,
                "count": 4769394,
                "maximum": -130516.0977,
                "minimum": -131008.9377,
                "name": "X",
                "position": 0,
                "stddev": 136.6217535,
                "variance": 18665.50352
              },
              {
                "average": 2280167.669,
                "count": 4769394,
                "maximum": 2280411.428,
                "minimum": 2279935.728,
                "name": "Y",
                "position": 1,
                "stddev": 130.0118163,
                "variance": 16903.07238
              },
              {
                "average": 20.73426994,
                "count": 4769394,
                "maximum": 29.11585508,
                "minimum": 20.09585508,
                "name": "Z",
                "position": 2,
                "stddev": 1.636654279,
                "variance": 2.678637228
              },
              {
                "average": 17129.14223,
                "count": 4769394,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 13913.64049,
                "variance": 193589391.6
              },
              {
                "average": 1.000003355,
                "count": 4769394,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001831587656,
                "variance": 3.354713341e-06
              },
              {
                "average": 1.000006709,
                "count": 4769394,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002590251759,
                "variance": 6.709404173e-06
              },
              {
                "average": 0.4980773239,
                "count": 4769394,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999963557,
                "variance": 0.2499963557
              },
              {
                "average": 0.0003302306331,
                "count": 4769394,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01816925012,
                "variance": 0.00033012165
              },
              {
                "average": 7.151055459,
                "count": 4769394,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.318584195,
                "variance": 11.01300106
              },
              {
                "average": 1.221751972,
                "count": 4769394,
                "maximum": 20.30999947,
                "minimum": -19.72200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.41290867,
                "variance": 70.77703229
              },
              {
                "average": 0.4924229368,
                "count": 4769394,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999426372,
                "variance": 0.2499426405
              },
              {
                "average": 663.7083913,
                "count": 4769394,
                "maximum": 708,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.82044084,
                "variance": 282.92723
              },
              {
                "average": 222295828.8,
                "count": 4769394,
                "maximum": 222298845.8,
                "minimum": 222294838.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1127.581653,
                "variance": 1271440.384
              },
              {
                "average": 0.4924229368,
                "count": 4769394,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999426372,
                "variance": 0.2499426405
              },
              {
                "average": 0,
                "count": 4769394,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4769394,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4769394,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08906770965,
                "count": 4769394,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2848414818,
                "variance": 0.08113466976
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131008.9377,
              2279935.728,
              20.09585508,
              -130516.0977,
              2280411.428,
              29.11585508
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131008.93766752594,
                    2279935.728252293,
                    20.095855075290963
                  ],
                  [
                    -131008.93766752594,
                    2280411.4282522933,
                    20.095855075290963
                  ],
                  [
                    -130516.09766752594,
                    2280411.4282522933,
                    29.115855075290966
                  ],
                  [
                    -130516.09766752594,
                    2279935.728252293,
                    29.115855075290966
                  ],
                  [
                    -131008.93766752594,
                    2279935.728252293,
                    20.095855075290963
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:25+00:00",
            "end_time": "2018-09-29T22:20:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1343.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82445825297665,
              71.2232226149309,
              14.920677544316774
            ],
            [
              -156.82500534799564,
              71.22756900484832,
              14.920677544316774
            ],
            [
              -156.81155709749646,
              71.22776206738428,
              27.060677544316775
            ],
            [
              -156.81101260064702,
              71.22341563450794,
              27.060677544316775
            ],
            [
              -156.82445825297665,
              71.2232226149309,
              14.920677544316774
            ]
          ]
        ]
      },
      "bbox": [
        -156.8250053,
        71.22322261,
        14.92067754,
        -156.8110126,
        71.22776207,
        27.06067754
      ],
      "properties": {
        "datetime": "2018-09-11T19:10:24Z",
        "pc:count": 4148839,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103731.0325,
            "count": 4148839,
            "maximum": -103479.5615,
            "minimum": -103975.1215,
            "name": "X",
            "position": 0,
            "stddev": 135.0285596,
            "variance": 18232.71191
          },
          {
            "average": 2360990.78,
            "count": 4148839,
            "maximum": 2361228.166,
            "minimum": 2360754.426,
            "name": "Y",
            "position": 1,
            "stddev": 125.5187287,
            "variance": 15754.95126
          },
          {
            "average": 20.45699869,
            "count": 4148839,
            "maximum": 27.06067754,
            "minimum": 14.92067754,
            "name": "Z",
            "position": 2,
            "stddev": 1.211224991,
            "variance": 1.467065979
          },
          {
            "average": 47194.14996,
            "count": 4148839,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 9076.60554,
            "variance": 82384768.13
          },
          {
            "average": 1.000004098,
            "count": 4148839,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002139995035,
            "variance": 4.57957875e-06
          },
          {
            "average": 1.000008195,
            "count": 4148839,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003105026024,
            "variance": 9.641186609e-06
          },
          {
            "average": 0.5092111311,
            "count": 4148839,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999152081,
            "variance": 0.2499152153
          },
          {
            "average": 0.00051725314,
            "count": 4148839,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02273731985,
            "variance": 0.0005169857138
          },
          {
            "average": 1.249960531,
            "count": 4148839,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4334662096,
            "variance": 0.1878929549
          },
          {
            "average": -2.770619019,
            "count": 4148839,
            "maximum": 16.40999985,
            "minimum": -19.78199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.09695027,
            "variance": 123.1423053
          },
          {
            "average": 0.5079428245,
            "count": 4148839,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999369678,
            "variance": 0.2499369718
          },
          {
            "average": 431.5738174,
            "count": 4148839,
            "maximum": 469,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.27796611,
            "variance": 496.3077741
          },
          {
            "average": 220503449.7,
            "count": 4148839,
            "maximum": 220728224.2,
            "minimum": 220420406.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 135358.0372,
            "variance": 18321798240.0
          },
          {
            "average": 0.5079428245,
            "count": 4148839,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999369678,
            "variance": 0.2499369718
          },
          {
            "average": 0,
            "count": 4148839,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4148839,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4148839,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2280623567,
            "count": 4148839,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4195830795,
            "variance": 0.1760499606
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103975.1215,
          2360754.426,
          14.92067754,
          -103479.5615,
          2361228.166,
          27.06067754
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103975.12147413348,
                2360754.425864498,
                14.920677544316774
              ],
              [
                -103975.12147413348,
                2361228.1658644984,
                14.920677544316774
              ],
              [
                -103479.56147413349,
                2361228.1658644984,
                27.060677544316775
              ],
              [
                -103479.56147413349,
                2360754.425864498,
                27.060677544316775
              ],
              [
                -103975.12147413348,
                2360754.425864498,
                14.920677544316774
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T19:10:24+00:00",
        "end_time": "2018-09-08T05:40:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1343.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1343.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1343.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1343.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8250053,
            71.22322261,
            14.92067754,
            -156.8110126,
            71.22776207,
            27.06067754
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82445825297665,
                  71.2232226149309,
                  14.920677544316774
                ],
                [
                  -156.82500534799564,
                  71.22756900484832,
                  14.920677544316774
                ],
                [
                  -156.81155709749646,
                  71.22776206738428,
                  27.060677544316775
                ],
                [
                  -156.81101260064702,
                  71.22341563450794,
                  27.060677544316775
                ],
                [
                  -156.82445825297665,
                  71.2232226149309,
                  14.920677544316774
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1343.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1343.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T19:10:24Z",
            "pc:count": 4148839,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103731.0325,
                "count": 4148839,
                "maximum": -103479.5615,
                "minimum": -103975.1215,
                "name": "X",
                "position": 0,
                "stddev": 135.0285596,
                "variance": 18232.71191
              },
              {
                "average": 2360990.78,
                "count": 4148839,
                "maximum": 2361228.166,
                "minimum": 2360754.426,
                "name": "Y",
                "position": 1,
                "stddev": 125.5187287,
                "variance": 15754.95126
              },
              {
                "average": 20.45699869,
                "count": 4148839,
                "maximum": 27.06067754,
                "minimum": 14.92067754,
                "name": "Z",
                "position": 2,
                "stddev": 1.211224991,
                "variance": 1.467065979
              },
              {
                "average": 47194.14996,
                "count": 4148839,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 9076.60554,
                "variance": 82384768.13
              },
              {
                "average": 1.000004098,
                "count": 4148839,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002139995035,
                "variance": 4.57957875e-06
              },
              {
                "average": 1.000008195,
                "count": 4148839,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003105026024,
                "variance": 9.641186609e-06
              },
              {
                "average": 0.5092111311,
                "count": 4148839,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999152081,
                "variance": 0.2499152153
              },
              {
                "average": 0.00051725314,
                "count": 4148839,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02273731985,
                "variance": 0.0005169857138
              },
              {
                "average": 1.249960531,
                "count": 4148839,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4334662096,
                "variance": 0.1878929549
              },
              {
                "average": -2.770619019,
                "count": 4148839,
                "maximum": 16.40999985,
                "minimum": -19.78199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.09695027,
                "variance": 123.1423053
              },
              {
                "average": 0.5079428245,
                "count": 4148839,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999369678,
                "variance": 0.2499369718
              },
              {
                "average": 431.5738174,
                "count": 4148839,
                "maximum": 469,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.27796611,
                "variance": 496.3077741
              },
              {
                "average": 220503449.7,
                "count": 4148839,
                "maximum": 220728224.2,
                "minimum": 220420406.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 135358.0372,
                "variance": 18321798240.0
              },
              {
                "average": 0.5079428245,
                "count": 4148839,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999369678,
                "variance": 0.2499369718
              },
              {
                "average": 0,
                "count": 4148839,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4148839,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4148839,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2280623567,
                "count": 4148839,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4195830795,
                "variance": 0.1760499606
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103975.1215,
              2360754.426,
              14.92067754,
              -103479.5615,
              2361228.166,
              27.06067754
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103975.12147413348,
                    2360754.425864498,
                    14.920677544316774
                  ],
                  [
                    -103975.12147413348,
                    2361228.1658644984,
                    14.920677544316774
                  ],
                  [
                    -103479.56147413349,
                    2361228.1658644984,
                    27.060677544316775
                  ],
                  [
                    -103479.56147413349,
                    2360754.425864498,
                    27.060677544316775
                  ],
                  [
                    -103975.12147413348,
                    2360754.425864498,
                    14.920677544316774
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T19:10:24+00:00",
            "end_time": "2018-09-08T05:40:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0289.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.41924476475353,
              70.47600531699538,
              9.151384859901786
            ],
            [
              -157.41988827722906,
              70.48034782300059,
              9.151384859901786
            ],
            [
              -157.40695103079514,
              70.48057926105211,
              52.25138485990179
            ],
            [
              -157.40630994412913,
              70.47623670572628,
              52.25138485990179
            ],
            [
              -157.41924476475353,
              70.47600531699538,
              9.151384859901786
            ]
          ]
        ]
      },
      "bbox": [
        -157.4198883,
        70.47600532,
        9.15138486,
        -157.4063099,
        70.48057926,
        52.25138486
      ],
      "properties": {
        "datetime": "2018-09-29T23:32:00Z",
        "pc:count": 5163851,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129803.0815,
            "count": 5163851,
            "maximum": -129557.7483,
            "minimum": -130050.5883,
            "name": "X",
            "position": 0,
            "stddev": 132.1659365,
            "variance": 17467.83477
          },
          {
            "average": 2280560.674,
            "count": 5163851,
            "maximum": 2280802.435,
            "minimum": 2280326.715,
            "name": "Y",
            "position": 1,
            "stddev": 126.8294893,
            "variance": 16085.71935
          },
          {
            "average": 23.99048251,
            "count": 5163851,
            "maximum": 52.25138486,
            "minimum": 9.15138486,
            "name": "Z",
            "position": 2,
            "stddev": 6.877164307,
            "variance": 47.29538891
          },
          {
            "average": 40027.3429,
            "count": 5163851,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10804.51585,
            "variance": 116737562.8
          },
          {
            "average": 1.007614472,
            "count": 5163851,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0888058548,
            "variance": 0.007886479846
          },
          {
            "average": 1.01523243,
            "count": 5163851,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1264407639,
            "variance": 0.01598726677
          },
          {
            "average": 0.4967912513,
            "count": 5163851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999897522,
            "variance": 0.2499897523
          },
          {
            "average": 0.0003522564845,
            "count": 5163851,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01876519299,
            "variance": 0.0003521324681
          },
          {
            "average": 1.554923835,
            "count": 5163851,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.42443336,
            "variance": 2.029010396
          },
          {
            "average": 3.084162141,
            "count": 5163851,
            "maximum": 20.34600067,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83820345,
            "variance": 117.4666541
          },
          {
            "average": 0.5047411322,
            "count": 5163851,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999775696,
            "variance": 0.2499775701
          },
          {
            "average": 665.4256364,
            "count": 5163851,
            "maximum": 709,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.06298407,
            "variance": 486.7752659
          },
          {
            "average": 222295722.2,
            "count": 5163851,
            "maximum": 222299120.3,
            "minimum": 222294512.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1672.650258,
            "variance": 2797758.886
          },
          {
            "average": 0.5047411322,
            "count": 5163851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999775696,
            "variance": 0.2499775701
          },
          {
            "average": 0,
            "count": 5163851,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5163851,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5163851,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2521865948,
            "count": 5163851,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4342678353,
            "variance": 0.1885885527
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130050.5883,
          2280326.715,
          9.15138486,
          -129557.7483,
          2280802.435,
          52.25138486
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130050.58830088827,
                2280326.714645631,
                9.151384859901786
              ],
              [
                -130050.58830088827,
                2280802.434645631,
                9.151384859901786
              ],
              [
                -129557.74830088827,
                2280802.434645631,
                52.25138485990179
              ],
              [
                -129557.74830088827,
                2280326.714645631,
                52.25138485990179
              ],
              [
                -130050.58830088827,
                2280326.714645631,
                9.151384859901786
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:32:00+00:00",
        "end_time": "2018-09-29T22:15:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0289.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0289.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0289.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0289.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4198883,
            70.47600532,
            9.15138486,
            -157.4063099,
            70.48057926,
            52.25138486
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.41924476475353,
                  70.47600531699538,
                  9.151384859901786
                ],
                [
                  -157.41988827722906,
                  70.48034782300059,
                  9.151384859901786
                ],
                [
                  -157.40695103079514,
                  70.48057926105211,
                  52.25138485990179
                ],
                [
                  -157.40630994412913,
                  70.47623670572628,
                  52.25138485990179
                ],
                [
                  -157.41924476475353,
                  70.47600531699538,
                  9.151384859901786
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0289.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0289.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:32:00Z",
            "pc:count": 5163851,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129803.0815,
                "count": 5163851,
                "maximum": -129557.7483,
                "minimum": -130050.5883,
                "name": "X",
                "position": 0,
                "stddev": 132.1659365,
                "variance": 17467.83477
              },
              {
                "average": 2280560.674,
                "count": 5163851,
                "maximum": 2280802.435,
                "minimum": 2280326.715,
                "name": "Y",
                "position": 1,
                "stddev": 126.8294893,
                "variance": 16085.71935
              },
              {
                "average": 23.99048251,
                "count": 5163851,
                "maximum": 52.25138486,
                "minimum": 9.15138486,
                "name": "Z",
                "position": 2,
                "stddev": 6.877164307,
                "variance": 47.29538891
              },
              {
                "average": 40027.3429,
                "count": 5163851,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10804.51585,
                "variance": 116737562.8
              },
              {
                "average": 1.007614472,
                "count": 5163851,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0888058548,
                "variance": 0.007886479846
              },
              {
                "average": 1.01523243,
                "count": 5163851,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1264407639,
                "variance": 0.01598726677
              },
              {
                "average": 0.4967912513,
                "count": 5163851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999897522,
                "variance": 0.2499897523
              },
              {
                "average": 0.0003522564845,
                "count": 5163851,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01876519299,
                "variance": 0.0003521324681
              },
              {
                "average": 1.554923835,
                "count": 5163851,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.42443336,
                "variance": 2.029010396
              },
              {
                "average": 3.084162141,
                "count": 5163851,
                "maximum": 20.34600067,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83820345,
                "variance": 117.4666541
              },
              {
                "average": 0.5047411322,
                "count": 5163851,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999775696,
                "variance": 0.2499775701
              },
              {
                "average": 665.4256364,
                "count": 5163851,
                "maximum": 709,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.06298407,
                "variance": 486.7752659
              },
              {
                "average": 222295722.2,
                "count": 5163851,
                "maximum": 222299120.3,
                "minimum": 222294512.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1672.650258,
                "variance": 2797758.886
              },
              {
                "average": 0.5047411322,
                "count": 5163851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999775696,
                "variance": 0.2499775701
              },
              {
                "average": 0,
                "count": 5163851,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5163851,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5163851,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2521865948,
                "count": 5163851,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4342678353,
                "variance": 0.1885885527
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130050.5883,
              2280326.715,
              9.15138486,
              -129557.7483,
              2280802.435,
              52.25138486
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130050.58830088827,
                    2280326.714645631,
                    9.151384859901786
                  ],
                  [
                    -130050.58830088827,
                    2280802.434645631,
                    9.151384859901786
                  ],
                  [
                    -129557.74830088827,
                    2280802.434645631,
                    52.25138485990179
                  ],
                  [
                    -129557.74830088827,
                    2280326.714645631,
                    52.25138485990179
                  ],
                  [
                    -130050.58830088827,
                    2280326.714645631,
                    9.151384859901786
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:32:00+00:00",
            "end_time": "2018-09-29T22:15:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0332.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.45578701027333,
              70.48431633661646,
              20.09169490461084
            ],
            [
              -157.45643746392602,
              70.48865783220667,
              20.09169490461084
            ],
            [
              -157.44349645352727,
              70.48889174779684,
              20.571694904610837
            ],
            [
              -157.44284842644322,
              70.48455020234645,
              20.571694904610837
            ],
            [
              -157.45578701027333,
              70.48431633661646,
              20.09169490461084
            ]
          ]
        ]
      },
      "bbox": [
        -157.4564375,
        70.48431634,
        20.0916949,
        -157.4428484,
        70.48889175,
        20.5716949
      ],
      "properties": {
        "datetime": "2018-09-29T23:22:29Z",
        "pc:count": 3307956,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131142.5088,
            "count": 3307956,
            "maximum": -130899.1076,
            "minimum": -131391.9276,
            "name": "X",
            "position": 0,
            "stddev": 135.5433452,
            "variance": 18371.99842
          },
          {
            "average": 2281538.704,
            "count": 3307956,
            "maximum": 2281782.278,
            "minimum": 2281306.678,
            "name": "Y",
            "position": 1,
            "stddev": 127.3472797,
            "variance": 16217.32964
          },
          {
            "average": 20.31135167,
            "count": 3307956,
            "maximum": 20.5716949,
            "minimum": 20.0916949,
            "name": "Z",
            "position": 2,
            "stddev": 0.0451835226,
            "variance": 0.002041550714
          },
          {
            "average": 12704.84394,
            "count": 3307956,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 8851.124637,
            "variance": 78342407.34
          },
          {
            "average": 1,
            "count": 3307956,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3307956,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.498408685,
            "count": 3307956,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999975433,
            "variance": 0.2499975433
          },
          {
            "average": 0.0004446854795,
            "count": 3307956,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02108288094,
            "variance": 0.0004444878687
          },
          {
            "average": 7.714604426,
            "count": 3307956,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.763242081,
            "variance": 7.635506798
          },
          {
            "average": 0.9458686711,
            "count": 3307956,
            "maximum": 20.45400047,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.449829454,
            "variance": 71.39961781
          },
          {
            "average": 0.4911997016,
            "count": 3307956,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999226243,
            "variance": 0.2499226303
          },
          {
            "average": 660.9408931,
            "count": 3307956,
            "maximum": 707,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.22791035,
            "variance": 450.6241779
          },
          {
            "average": 222295054,
            "count": 3307956,
            "maximum": 222298549.1,
            "minimum": 222294117,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1552.125355,
            "variance": 2409093.118
          },
          {
            "average": 0.4911997016,
            "count": 3307956,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999226243,
            "variance": 0.2499226303
          },
          {
            "average": 0,
            "count": 3307956,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3307956,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3307956,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05795996077,
            "count": 3307956,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2336677561,
            "variance": 0.05460062023
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131391.9276,
          2281306.678,
          20.0916949,
          -130899.1076,
          2281782.278,
          20.5716949
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131391.92761353785,
                2281306.6775480574,
                20.09169490461084
              ],
              [
                -131391.92761353785,
                2281782.277548057,
                20.09169490461084
              ],
              [
                -130899.10761353784,
                2281782.277548057,
                20.571694904610837
              ],
              [
                -130899.10761353784,
                2281306.6775480574,
                20.571694904610837
              ],
              [
                -131391.92761353785,
                2281306.6775480574,
                20.09169490461084
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:22:29+00:00",
        "end_time": "2018-09-29T22:08:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0332.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0332.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0332.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0332.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4564375,
            70.48431634,
            20.0916949,
            -157.4428484,
            70.48889175,
            20.5716949
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.45578701027333,
                  70.48431633661646,
                  20.09169490461084
                ],
                [
                  -157.45643746392602,
                  70.48865783220667,
                  20.09169490461084
                ],
                [
                  -157.44349645352727,
                  70.48889174779684,
                  20.571694904610837
                ],
                [
                  -157.44284842644322,
                  70.48455020234645,
                  20.571694904610837
                ],
                [
                  -157.45578701027333,
                  70.48431633661646,
                  20.09169490461084
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0332.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0332.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:22:29Z",
            "pc:count": 3307956,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131142.5088,
                "count": 3307956,
                "maximum": -130899.1076,
                "minimum": -131391.9276,
                "name": "X",
                "position": 0,
                "stddev": 135.5433452,
                "variance": 18371.99842
              },
              {
                "average": 2281538.704,
                "count": 3307956,
                "maximum": 2281782.278,
                "minimum": 2281306.678,
                "name": "Y",
                "position": 1,
                "stddev": 127.3472797,
                "variance": 16217.32964
              },
              {
                "average": 20.31135167,
                "count": 3307956,
                "maximum": 20.5716949,
                "minimum": 20.0916949,
                "name": "Z",
                "position": 2,
                "stddev": 0.0451835226,
                "variance": 0.002041550714
              },
              {
                "average": 12704.84394,
                "count": 3307956,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 8851.124637,
                "variance": 78342407.34
              },
              {
                "average": 1,
                "count": 3307956,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3307956,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.498408685,
                "count": 3307956,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999975433,
                "variance": 0.2499975433
              },
              {
                "average": 0.0004446854795,
                "count": 3307956,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02108288094,
                "variance": 0.0004444878687
              },
              {
                "average": 7.714604426,
                "count": 3307956,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.763242081,
                "variance": 7.635506798
              },
              {
                "average": 0.9458686711,
                "count": 3307956,
                "maximum": 20.45400047,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.449829454,
                "variance": 71.39961781
              },
              {
                "average": 0.4911997016,
                "count": 3307956,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999226243,
                "variance": 0.2499226303
              },
              {
                "average": 660.9408931,
                "count": 3307956,
                "maximum": 707,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.22791035,
                "variance": 450.6241779
              },
              {
                "average": 222295054,
                "count": 3307956,
                "maximum": 222298549.1,
                "minimum": 222294117,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1552.125355,
                "variance": 2409093.118
              },
              {
                "average": 0.4911997016,
                "count": 3307956,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999226243,
                "variance": 0.2499226303
              },
              {
                "average": 0,
                "count": 3307956,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3307956,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3307956,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05795996077,
                "count": 3307956,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2336677561,
                "variance": 0.05460062023
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131391.9276,
              2281306.678,
              20.0916949,
              -130899.1076,
              2281782.278,
              20.5716949
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131391.92761353785,
                    2281306.6775480574,
                    20.09169490461084
                  ],
                  [
                    -131391.92761353785,
                    2281782.277548057,
                    20.09169490461084
                  ],
                  [
                    -130899.10761353784,
                    2281782.277548057,
                    20.571694904610837
                  ],
                  [
                    -130899.10761353784,
                    2281306.6775480574,
                    20.571694904610837
                  ],
                  [
                    -131391.92761353785,
                    2281306.6775480574,
                    20.09169490461084
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:22:29+00:00",
            "end_time": "2018-09-29T22:08:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1344.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81173688852505,
              71.22314229552163,
              18.73695024429569
            ],
            [
              -156.81228163394184,
              71.22748963595349,
              18.73695024429569
            ],
            [
              -156.79883386483917,
              71.22768181954609,
              22.436950244295694
            ],
            [
              -156.7982917181014,
              71.22333443634173,
              22.436950244295694
            ],
            [
              -156.81173688852505,
              71.22314229552163,
              18.73695024429569
            ]
          ]
        ]
      },
      "bbox": [
        -156.8122816,
        71.2231423,
        18.73695024,
        -156.7982917,
        71.22768182,
        22.43695024
      ],
      "properties": {
        "datetime": "2018-09-11T19:10:17Z",
        "pc:count": 3926459,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103261.8175,
            "count": 3926459,
            "maximum": -103011.9281,
            "minimum": -103507.4681,
            "name": "X",
            "position": 0,
            "stddev": 134.8898756,
            "variance": 18195.27854
          },
          {
            "average": 2360971.188,
            "count": 3926459,
            "maximum": 2361199.655,
            "minimum": 2360725.815,
            "name": "Y",
            "position": 1,
            "stddev": 124.6836582,
            "variance": 15546.01462
          },
          {
            "average": 20.73868725,
            "count": 3926459,
            "maximum": 22.43695024,
            "minimum": 18.73695024,
            "name": "Z",
            "position": 2,
            "stddev": 0.6752454357,
            "variance": 0.4559563985
          },
          {
            "average": 45250.42146,
            "count": 3926459,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10361.52032,
            "variance": 107361103.3
          },
          {
            "average": 1,
            "count": 3926459,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3926459,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5059380475,
            "count": 3926459,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499964802,
            "variance": 0.2499648033
          },
          {
            "average": 0.0005057992456,
            "count": 3926459,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02248429544,
            "variance": 0.0005055435415
          },
          {
            "average": 1.271093369,
            "count": 3926459,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4450138333,
            "variance": 0.1980373118
          },
          {
            "average": -2.630982686,
            "count": 3926459,
            "maximum": 16.74600029,
            "minimum": -19.86599922,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12885322,
            "variance": 123.8513739
          },
          {
            "average": 0.4927460086,
            "count": 3926459,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999474405,
            "variance": 0.2499474433
          },
          {
            "average": 431.56782,
            "count": 3926459,
            "maximum": 469,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.53473469,
            "variance": 463.7447982
          },
          {
            "average": 220499825.6,
            "count": 3926459,
            "maximum": 220728217.1,
            "minimum": 220421310.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133052.95,
            "variance": 17703087510.0
          },
          {
            "average": 0.4927460086,
            "count": 3926459,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999474405,
            "variance": 0.2499474433
          },
          {
            "average": 0,
            "count": 3926459,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3926459,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3926459,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2159602329,
            "count": 3926459,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4114868817,
            "variance": 0.1693214538
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103507.4681,
          2360725.815,
          18.73695024,
          -103011.9281,
          2361199.655,
          22.43695024
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103507.46805839108,
                2360725.8148605824,
                18.73695024429569
              ],
              [
                -103507.46805839108,
                2361199.654860582,
                18.73695024429569
              ],
              [
                -103011.92805839107,
                2361199.654860582,
                22.436950244295694
              ],
              [
                -103011.92805839107,
                2360725.8148605824,
                22.436950244295694
              ],
              [
                -103507.46805839108,
                2360725.8148605824,
                18.73695024429569
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T19:10:17+00:00",
        "end_time": "2018-09-08T05:55:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1344.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1344.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1344.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1344.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8122816,
            71.2231423,
            18.73695024,
            -156.7982917,
            71.22768182,
            22.43695024
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81173688852505,
                  71.22314229552163,
                  18.73695024429569
                ],
                [
                  -156.81228163394184,
                  71.22748963595349,
                  18.73695024429569
                ],
                [
                  -156.79883386483917,
                  71.22768181954609,
                  22.436950244295694
                ],
                [
                  -156.7982917181014,
                  71.22333443634173,
                  22.436950244295694
                ],
                [
                  -156.81173688852505,
                  71.22314229552163,
                  18.73695024429569
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1344.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1344.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T19:10:17Z",
            "pc:count": 3926459,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103261.8175,
                "count": 3926459,
                "maximum": -103011.9281,
                "minimum": -103507.4681,
                "name": "X",
                "position": 0,
                "stddev": 134.8898756,
                "variance": 18195.27854
              },
              {
                "average": 2360971.188,
                "count": 3926459,
                "maximum": 2361199.655,
                "minimum": 2360725.815,
                "name": "Y",
                "position": 1,
                "stddev": 124.6836582,
                "variance": 15546.01462
              },
              {
                "average": 20.73868725,
                "count": 3926459,
                "maximum": 22.43695024,
                "minimum": 18.73695024,
                "name": "Z",
                "position": 2,
                "stddev": 0.6752454357,
                "variance": 0.4559563985
              },
              {
                "average": 45250.42146,
                "count": 3926459,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10361.52032,
                "variance": 107361103.3
              },
              {
                "average": 1,
                "count": 3926459,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3926459,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5059380475,
                "count": 3926459,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499964802,
                "variance": 0.2499648033
              },
              {
                "average": 0.0005057992456,
                "count": 3926459,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02248429544,
                "variance": 0.0005055435415
              },
              {
                "average": 1.271093369,
                "count": 3926459,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4450138333,
                "variance": 0.1980373118
              },
              {
                "average": -2.630982686,
                "count": 3926459,
                "maximum": 16.74600029,
                "minimum": -19.86599922,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12885322,
                "variance": 123.8513739
              },
              {
                "average": 0.4927460086,
                "count": 3926459,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999474405,
                "variance": 0.2499474433
              },
              {
                "average": 431.56782,
                "count": 3926459,
                "maximum": 469,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.53473469,
                "variance": 463.7447982
              },
              {
                "average": 220499825.6,
                "count": 3926459,
                "maximum": 220728217.1,
                "minimum": 220421310.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133052.95,
                "variance": 17703087510.0
              },
              {
                "average": 0.4927460086,
                "count": 3926459,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999474405,
                "variance": 0.2499474433
              },
              {
                "average": 0,
                "count": 3926459,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3926459,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3926459,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2159602329,
                "count": 3926459,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4114868817,
                "variance": 0.1693214538
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103507.4681,
              2360725.815,
              18.73695024,
              -103011.9281,
              2361199.655,
              22.43695024
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103507.46805839108,
                    2360725.8148605824,
                    18.73695024429569
                  ],
                  [
                    -103507.46805839108,
                    2361199.654860582,
                    18.73695024429569
                  ],
                  [
                    -103011.92805839107,
                    2361199.654860582,
                    22.436950244295694
                  ],
                  [
                    -103011.92805839107,
                    2360725.8148605824,
                    22.436950244295694
                  ],
                  [
                    -103507.46805839108,
                    2360725.8148605824,
                    18.73695024429569
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T19:10:17+00:00",
            "end_time": "2018-09-08T05:55:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0241.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.44397630356565,
              70.46788568165874,
              20.1249466537596
            ],
            [
              -157.44462421137078,
              70.47222771776637,
              20.1249466537596
            ],
            [
              -157.43169333501652,
              70.47246079237857,
              43.384946653759606
            ],
            [
              -157.4310478507323,
              70.46811870662934,
              43.384946653759606
            ],
            [
              -157.44397630356565,
              70.46788568165874,
              20.1249466537596
            ]
          ]
        ]
      },
      "bbox": [
        -157.4446242,
        70.46788568,
        20.12494665,
        -157.4310479,
        70.47246079,
        43.38494665
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:32Z",
        "pc:count": 6270905,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130781.1259,
            "count": 6270905,
            "maximum": -130543.6774,
            "minimum": -131036.4574,
            "name": "X",
            "position": 0,
            "stddev": 137.5976681,
            "variance": 18933.11826
          },
          {
            "average": 2279715.464,
            "count": 6270905,
            "maximum": 2279963.859,
            "minimum": 2279488.159,
            "name": "Y",
            "position": 1,
            "stddev": 128.2808164,
            "variance": 16455.96785
          },
          {
            "average": 28.68330979,
            "count": 6270905,
            "maximum": 43.38494665,
            "minimum": 20.12494665,
            "name": "Z",
            "position": 2,
            "stddev": 3.265035532,
            "variance": 10.66045703
          },
          {
            "average": 41132.00831,
            "count": 6270905,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13430.67067,
            "variance": 180382914.7
          },
          {
            "average": 1.000352581,
            "count": 6270905,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01879928805,
            "variance": 0.000353413231
          },
          {
            "average": 1.000704683,
            "count": 6270905,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02659054174,
            "variance": 0.0007070569101
          },
          {
            "average": 0.4979333924,
            "count": 6270905,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499995769,
            "variance": 0.249995769
          },
          {
            "average": 0.0002769935121,
            "count": 6270905,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01664081821,
            "variance": 0.0002769168309
          },
          {
            "average": 1.899998485,
            "count": 6270905,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.247216739,
            "variance": 5.049983073
          },
          {
            "average": 0.8899910228,
            "count": 6270905,
            "maximum": 20.3220005,
            "minimum": -19.83600044,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.793873096,
            "variance": 95.91995021
          },
          {
            "average": 0.4807660138,
            "count": 6270905,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996299567,
            "variance": 0.2496300936
          },
          {
            "average": 664.3238201,
            "count": 6270905,
            "maximum": 708,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.07016535,
            "variance": 258.2502142
          },
          {
            "average": 222295969.2,
            "count": 6270905,
            "maximum": 222298852.3,
            "minimum": 222295181.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1017.387187,
            "variance": 1035076.688
          },
          {
            "average": 0.4807660138,
            "count": 6270905,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996299567,
            "variance": 0.2496300936
          },
          {
            "average": 0,
            "count": 6270905,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6270905,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6270905,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1724135512,
            "count": 6270905,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3777395151,
            "variance": 0.1426871413
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131036.4574,
          2279488.159,
          20.12494665,
          -130543.6774,
          2279963.859,
          43.38494665
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131036.45738364688,
                2279488.158612928,
                20.1249466537596
              ],
              [
                -131036.45738364688,
                2279963.858612928,
                20.1249466537596
              ],
              [
                -130543.67738364688,
                2279963.858612928,
                43.384946653759606
              ],
              [
                -130543.67738364688,
                2279488.158612928,
                43.384946653759606
              ],
              [
                -131036.45738364688,
                2279488.158612928,
                20.1249466537596
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:32+00:00",
        "end_time": "2018-09-29T22:26:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0241.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0241.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0241.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0241.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4446242,
            70.46788568,
            20.12494665,
            -157.4310479,
            70.47246079,
            43.38494665
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.44397630356565,
                  70.46788568165874,
                  20.1249466537596
                ],
                [
                  -157.44462421137078,
                  70.47222771776637,
                  20.1249466537596
                ],
                [
                  -157.43169333501652,
                  70.47246079237857,
                  43.384946653759606
                ],
                [
                  -157.4310478507323,
                  70.46811870662934,
                  43.384946653759606
                ],
                [
                  -157.44397630356565,
                  70.46788568165874,
                  20.1249466537596
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0241.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0241.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:32Z",
            "pc:count": 6270905,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130781.1259,
                "count": 6270905,
                "maximum": -130543.6774,
                "minimum": -131036.4574,
                "name": "X",
                "position": 0,
                "stddev": 137.5976681,
                "variance": 18933.11826
              },
              {
                "average": 2279715.464,
                "count": 6270905,
                "maximum": 2279963.859,
                "minimum": 2279488.159,
                "name": "Y",
                "position": 1,
                "stddev": 128.2808164,
                "variance": 16455.96785
              },
              {
                "average": 28.68330979,
                "count": 6270905,
                "maximum": 43.38494665,
                "minimum": 20.12494665,
                "name": "Z",
                "position": 2,
                "stddev": 3.265035532,
                "variance": 10.66045703
              },
              {
                "average": 41132.00831,
                "count": 6270905,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13430.67067,
                "variance": 180382914.7
              },
              {
                "average": 1.000352581,
                "count": 6270905,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01879928805,
                "variance": 0.000353413231
              },
              {
                "average": 1.000704683,
                "count": 6270905,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02659054174,
                "variance": 0.0007070569101
              },
              {
                "average": 0.4979333924,
                "count": 6270905,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499995769,
                "variance": 0.249995769
              },
              {
                "average": 0.0002769935121,
                "count": 6270905,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01664081821,
                "variance": 0.0002769168309
              },
              {
                "average": 1.899998485,
                "count": 6270905,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.247216739,
                "variance": 5.049983073
              },
              {
                "average": 0.8899910228,
                "count": 6270905,
                "maximum": 20.3220005,
                "minimum": -19.83600044,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.793873096,
                "variance": 95.91995021
              },
              {
                "average": 0.4807660138,
                "count": 6270905,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996299567,
                "variance": 0.2496300936
              },
              {
                "average": 664.3238201,
                "count": 6270905,
                "maximum": 708,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.07016535,
                "variance": 258.2502142
              },
              {
                "average": 222295969.2,
                "count": 6270905,
                "maximum": 222298852.3,
                "minimum": 222295181.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1017.387187,
                "variance": 1035076.688
              },
              {
                "average": 0.4807660138,
                "count": 6270905,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996299567,
                "variance": 0.2496300936
              },
              {
                "average": 0,
                "count": 6270905,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6270905,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6270905,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1724135512,
                "count": 6270905,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3777395151,
                "variance": 0.1426871413
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131036.4574,
              2279488.159,
              20.12494665,
              -130543.6774,
              2279963.859,
              43.38494665
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131036.45738364688,
                    2279488.158612928,
                    20.1249466537596
                  ],
                  [
                    -131036.45738364688,
                    2279963.858612928,
                    20.1249466537596
                  ],
                  [
                    -130543.67738364688,
                    2279963.858612928,
                    43.384946653759606
                  ],
                  [
                    -130543.67738364688,
                    2279488.158612928,
                    43.384946653759606
                  ],
                  [
                    -131036.45738364688,
                    2279488.158612928,
                    20.1249466537596
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:32+00:00",
            "end_time": "2018-09-29T22:26:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0333.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.44352554068578,
              70.4842783935008,
              20.091405559901908
            ],
            [
              -157.4441737419959,
              70.48862029496625,
              20.091405559901908
            ],
            [
              -157.43123420441026,
              70.48885335141333,
              39.31140555990191
            ],
            [
              -157.43058842966263,
              70.48451140026631,
              39.31140555990191
            ],
            [
              -157.44352554068578,
              70.4842783935008,
              20.091405559901908
            ]
          ]
        ]
      },
      "bbox": [
        -157.4441737,
        70.48427839,
        20.09140556,
        -157.4305884,
        70.48885335,
        39.31140556
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:07Z",
        "pc:count": 5086358,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130661.4817,
            "count": 5086358,
            "maximum": -130433.61,
            "minimum": -130926.37,
            "name": "X",
            "position": 0,
            "stddev": 133.8030708,
            "variance": 17903.26175
          },
          {
            "average": 2281515.022,
            "count": 5086358,
            "maximum": 2281753.956,
            "minimum": 2281278.316,
            "name": "Y",
            "position": 1,
            "stddev": 124.0110776,
            "variance": 15378.74736
          },
          {
            "average": 22.91710133,
            "count": 5086358,
            "maximum": 39.31140556,
            "minimum": 20.09140556,
            "name": "Z",
            "position": 2,
            "stddev": 2.781325905,
            "variance": 7.735773792
          },
          {
            "average": 29293.78407,
            "count": 5086358,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 18694.86137,
            "variance": 349497841.5
          },
          {
            "average": 1.000111475,
            "count": 5086358,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01099541992,
            "variance": 0.0001208992593
          },
          {
            "average": 1.000231797,
            "count": 5086358,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01619916976,
            "variance": 0.0002624131008
          },
          {
            "average": 0.5001295623,
            "count": 5086358,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000324,
            "variance": 0.2500000324
          },
          {
            "average": 0.0002638430091,
            "count": 5086358,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01624110365,
            "variance": 0.0002637734478
          },
          {
            "average": 4.664707439,
            "count": 5086358,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.867553455,
            "variance": 14.95796973
          },
          {
            "average": 0.4559612305,
            "count": 5086358,
            "maximum": 20.47800064,
            "minimum": -19.75799942,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.87221587,
            "variance": 78.71621444
          },
          {
            "average": 0.4968726149,
            "count": 5086358,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999902685,
            "variance": 0.2499902686
          },
          {
            "average": 661.2250121,
            "count": 5086358,
            "maximum": 708,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.87019932,
            "variance": 356.0844222
          },
          {
            "average": 222295357.9,
            "count": 5086358,
            "maximum": 222298827,
            "minimum": 222294123.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1502.937664,
            "variance": 2258821.622
          },
          {
            "average": 0.4968726149,
            "count": 5086358,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999902685,
            "variance": 0.2499902686
          },
          {
            "average": 0,
            "count": 5086358,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5086358,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5086358,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1083215141,
            "count": 5086358,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3107860722,
            "variance": 0.0965879827
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130926.37,
          2281278.316,
          20.09140556,
          -130433.61,
          2281753.956,
          39.31140556
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130926.36999097568,
                2281278.3162410096,
                20.091405559901908
              ],
              [
                -130926.36999097568,
                2281753.9562410093,
                20.091405559901908
              ],
              [
                -130433.60999097567,
                2281753.9562410093,
                39.31140555990191
              ],
              [
                -130433.60999097567,
                2281278.3162410096,
                39.31140555990191
              ],
              [
                -130926.36999097568,
                2281278.3162410096,
                20.091405559901908
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:07+00:00",
        "end_time": "2018-09-29T22:08:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0333.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0333.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0333.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0333.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4441737,
            70.48427839,
            20.09140556,
            -157.4305884,
            70.48885335,
            39.31140556
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.44352554068578,
                  70.4842783935008,
                  20.091405559901908
                ],
                [
                  -157.4441737419959,
                  70.48862029496625,
                  20.091405559901908
                ],
                [
                  -157.43123420441026,
                  70.48885335141333,
                  39.31140555990191
                ],
                [
                  -157.43058842966263,
                  70.48451140026631,
                  39.31140555990191
                ],
                [
                  -157.44352554068578,
                  70.4842783935008,
                  20.091405559901908
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0333.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0333.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:07Z",
            "pc:count": 5086358,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130661.4817,
                "count": 5086358,
                "maximum": -130433.61,
                "minimum": -130926.37,
                "name": "X",
                "position": 0,
                "stddev": 133.8030708,
                "variance": 17903.26175
              },
              {
                "average": 2281515.022,
                "count": 5086358,
                "maximum": 2281753.956,
                "minimum": 2281278.316,
                "name": "Y",
                "position": 1,
                "stddev": 124.0110776,
                "variance": 15378.74736
              },
              {
                "average": 22.91710133,
                "count": 5086358,
                "maximum": 39.31140556,
                "minimum": 20.09140556,
                "name": "Z",
                "position": 2,
                "stddev": 2.781325905,
                "variance": 7.735773792
              },
              {
                "average": 29293.78407,
                "count": 5086358,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 18694.86137,
                "variance": 349497841.5
              },
              {
                "average": 1.000111475,
                "count": 5086358,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01099541992,
                "variance": 0.0001208992593
              },
              {
                "average": 1.000231797,
                "count": 5086358,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01619916976,
                "variance": 0.0002624131008
              },
              {
                "average": 0.5001295623,
                "count": 5086358,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000324,
                "variance": 0.2500000324
              },
              {
                "average": 0.0002638430091,
                "count": 5086358,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01624110365,
                "variance": 0.0002637734478
              },
              {
                "average": 4.664707439,
                "count": 5086358,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.867553455,
                "variance": 14.95796973
              },
              {
                "average": 0.4559612305,
                "count": 5086358,
                "maximum": 20.47800064,
                "minimum": -19.75799942,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.87221587,
                "variance": 78.71621444
              },
              {
                "average": 0.4968726149,
                "count": 5086358,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999902685,
                "variance": 0.2499902686
              },
              {
                "average": 661.2250121,
                "count": 5086358,
                "maximum": 708,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.87019932,
                "variance": 356.0844222
              },
              {
                "average": 222295357.9,
                "count": 5086358,
                "maximum": 222298827,
                "minimum": 222294123.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1502.937664,
                "variance": 2258821.622
              },
              {
                "average": 0.4968726149,
                "count": 5086358,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999902685,
                "variance": 0.2499902686
              },
              {
                "average": 0,
                "count": 5086358,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5086358,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5086358,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1083215141,
                "count": 5086358,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3107860722,
                "variance": 0.0965879827
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130926.37,
              2281278.316,
              20.09140556,
              -130433.61,
              2281753.956,
              39.31140556
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130926.36999097568,
                    2281278.3162410096,
                    20.091405559901908
                  ],
                  [
                    -130926.36999097568,
                    2281753.9562410093,
                    20.091405559901908
                  ],
                  [
                    -130433.60999097567,
                    2281753.9562410093,
                    39.31140555990191
                  ],
                  [
                    -130433.60999097567,
                    2281278.3162410096,
                    39.31140555990191
                  ],
                  [
                    -130926.36999097568,
                    2281278.3162410096,
                    20.091405559901908
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:07+00:00",
            "end_time": "2018-09-29T22:08:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0244.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.40722963645882,
              70.46776949042999,
              8.472228822876623
            ],
            [
              -157.40787058016235,
              70.4721112825677,
              8.472228822876623
            ],
            [
              -157.39494045050287,
              70.47234184897397,
              27.152228822876623
            ],
            [
              -157.3943019301723,
              70.46800000773197,
              27.152228822876623
            ],
            [
              -157.40722963645882,
              70.46776949042999,
              8.472228822876623
            ]
          ]
        ]
      },
      "bbox": [
        -157.4078706,
        70.46776949,
        8.472228823,
        -157.3943019,
        70.47234185,
        27.15222882
      ],
      "properties": {
        "datetime": "2018-09-29T23:37:08Z",
        "pc:count": 4602957,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129398.727,
            "count": 4602957,
            "maximum": -129147.4652,
            "minimum": -129640.2052,
            "name": "X",
            "position": 0,
            "stddev": 128.9023446,
            "variance": 16615.81445
          },
          {
            "average": 2279633.845,
            "count": 4602957,
            "maximum": 2279879.004,
            "minimum": 2279403.344,
            "name": "Y",
            "position": 1,
            "stddev": 131.3368267,
            "variance": 17249.36205
          },
          {
            "average": 19.79373936,
            "count": 4602957,
            "maximum": 27.15222882,
            "minimum": 8.472228823,
            "name": "Z",
            "position": 2,
            "stddev": 4.338896141,
            "variance": 18.82601972
          },
          {
            "average": 46016.84816,
            "count": 4602957,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 12036.47564,
            "variance": 144876745.7
          },
          {
            "average": 1.000374107,
            "count": 4602957,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01934946946,
            "variance": 0.0003744019685
          },
          {
            "average": 1.000748215,
            "count": 4602957,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02736710667,
            "variance": 0.0007489585277
          },
          {
            "average": 0.5023283946,
            "count": 4602957,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999946329,
            "variance": 0.2499946329
          },
          {
            "average": 0.0002902482035,
            "count": 4602957,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01703420155,
            "variance": 0.0002901640225
          },
          {
            "average": 1.69818836,
            "count": 4602957,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.813687199,
            "variance": 3.289461256
          },
          {
            "average": -1.561600072,
            "count": 4602957,
            "maximum": 16.48800087,
            "minimum": -19.81800079,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.24426311,
            "variance": 104.9449266
          },
          {
            "average": 0.4810540268,
            "count": 4602957,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996409754,
            "variance": 0.2496411043
          },
          {
            "average": 665.752553,
            "count": 4602957,
            "maximum": 710,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.10274717,
            "variance": 364.9149496
          },
          {
            "average": 222296042,
            "count": 4602957,
            "maximum": 222299428.2,
            "minimum": 222295200.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1393.388882,
            "variance": 1941532.575
          },
          {
            "average": 0.4810540268,
            "count": 4602957,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996409754,
            "variance": 0.2496411043
          },
          {
            "average": 0,
            "count": 4602957,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4602957,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4602957,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.188723249,
            "count": 4602957,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3912886627,
            "variance": 0.1531068175
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129640.2052,
          2279403.344,
          8.472228823,
          -129147.4652,
          2279879.004,
          27.15222882
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129640.2052027644,
                2279403.3439146937,
                8.472228822876623
              ],
              [
                -129640.2052027644,
                2279879.003914694,
                8.472228822876623
              ],
              [
                -129147.4652027644,
                2279879.003914694,
                27.152228822876623
              ],
              [
                -129147.4652027644,
                2279403.3439146937,
                27.152228822876623
              ],
              [
                -129640.2052027644,
                2279403.3439146937,
                8.472228822876623
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:37:08+00:00",
        "end_time": "2018-09-29T22:26:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0244.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0244.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0244.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0244.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4078706,
            70.46776949,
            8.472228823,
            -157.3943019,
            70.47234185,
            27.15222882
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.40722963645882,
                  70.46776949042999,
                  8.472228822876623
                ],
                [
                  -157.40787058016235,
                  70.4721112825677,
                  8.472228822876623
                ],
                [
                  -157.39494045050287,
                  70.47234184897397,
                  27.152228822876623
                ],
                [
                  -157.3943019301723,
                  70.46800000773197,
                  27.152228822876623
                ],
                [
                  -157.40722963645882,
                  70.46776949042999,
                  8.472228822876623
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0244.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0244.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:37:08Z",
            "pc:count": 4602957,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129398.727,
                "count": 4602957,
                "maximum": -129147.4652,
                "minimum": -129640.2052,
                "name": "X",
                "position": 0,
                "stddev": 128.9023446,
                "variance": 16615.81445
              },
              {
                "average": 2279633.845,
                "count": 4602957,
                "maximum": 2279879.004,
                "minimum": 2279403.344,
                "name": "Y",
                "position": 1,
                "stddev": 131.3368267,
                "variance": 17249.36205
              },
              {
                "average": 19.79373936,
                "count": 4602957,
                "maximum": 27.15222882,
                "minimum": 8.472228823,
                "name": "Z",
                "position": 2,
                "stddev": 4.338896141,
                "variance": 18.82601972
              },
              {
                "average": 46016.84816,
                "count": 4602957,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 12036.47564,
                "variance": 144876745.7
              },
              {
                "average": 1.000374107,
                "count": 4602957,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01934946946,
                "variance": 0.0003744019685
              },
              {
                "average": 1.000748215,
                "count": 4602957,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02736710667,
                "variance": 0.0007489585277
              },
              {
                "average": 0.5023283946,
                "count": 4602957,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999946329,
                "variance": 0.2499946329
              },
              {
                "average": 0.0002902482035,
                "count": 4602957,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01703420155,
                "variance": 0.0002901640225
              },
              {
                "average": 1.69818836,
                "count": 4602957,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.813687199,
                "variance": 3.289461256
              },
              {
                "average": -1.561600072,
                "count": 4602957,
                "maximum": 16.48800087,
                "minimum": -19.81800079,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.24426311,
                "variance": 104.9449266
              },
              {
                "average": 0.4810540268,
                "count": 4602957,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996409754,
                "variance": 0.2496411043
              },
              {
                "average": 665.752553,
                "count": 4602957,
                "maximum": 710,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.10274717,
                "variance": 364.9149496
              },
              {
                "average": 222296042,
                "count": 4602957,
                "maximum": 222299428.2,
                "minimum": 222295200.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1393.388882,
                "variance": 1941532.575
              },
              {
                "average": 0.4810540268,
                "count": 4602957,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996409754,
                "variance": 0.2496411043
              },
              {
                "average": 0,
                "count": 4602957,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4602957,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4602957,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.188723249,
                "count": 4602957,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3912886627,
                "variance": 0.1531068175
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129640.2052,
              2279403.344,
              8.472228823,
              -129147.4652,
              2279879.004,
              27.15222882
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129640.2052027644,
                    2279403.3439146937,
                    8.472228822876623
                  ],
                  [
                    -129640.2052027644,
                    2279879.003914694,
                    8.472228822876623
                  ],
                  [
                    -129147.4652027644,
                    2279879.003914694,
                    27.152228822876623
                  ],
                  [
                    -129147.4652027644,
                    2279403.3439146937,
                    27.152228822876623
                  ],
                  [
                    -129640.2052027644,
                    2279403.3439146937,
                    8.472228822876623
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:37:08+00:00",
            "end_time": "2018-09-29T22:26:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0290.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.40699220582906,
              70.47596589687342,
              8.446325737377986
            ],
            [
              -157.40763333238135,
              70.48030789540036,
              8.446325737377986
            ],
            [
              -157.39469651097136,
              70.48053849386734,
              18.50632573737799
            ],
            [
              -157.39405780990793,
              70.47619644620451,
              18.50632573737799
            ],
            [
              -157.40699220582906,
              70.47596589687342,
              8.446325737377986
            ]
          ]
        ]
      },
      "bbox": [
        -157.4076333,
        70.4759659,
        8.446325737,
        -157.3940578,
        70.48053849,
        18.50632574
      ],
      "properties": {
        "datetime": "2018-09-29T23:36:55Z",
        "pc:count": 4285082,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129332.4809,
            "count": 4285082,
            "maximum": -129092.3744,
            "minimum": -129585.1944,
            "name": "X",
            "position": 0,
            "stddev": 139.0740896,
            "variance": 19341.60239
          },
          {
            "average": 2280529.122,
            "count": 4285082,
            "maximum": 2280774.117,
            "minimum": 2280298.457,
            "name": "Y",
            "position": 1,
            "stddev": 127.518386,
            "variance": 16260.93877
          },
          {
            "average": 13.03571517,
            "count": 4285082,
            "maximum": 18.50632574,
            "minimum": 8.446325737,
            "name": "Z",
            "position": 2,
            "stddev": 3.660270529,
            "variance": 13.39758034
          },
          {
            "average": 36090.78693,
            "count": 4285082,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 16473.43526,
            "variance": 271374069.3
          },
          {
            "average": 1.000210031,
            "count": 4285082,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01449092552,
            "variance": 0.0002099869226
          },
          {
            "average": 1.000420062,
            "count": 4285082,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02049111073,
            "variance": 0.0004198856191
          },
          {
            "average": 0.5054542714,
            "count": 4285082,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999703084,
            "variance": 0.2499703093
          },
          {
            "average": 0.000308045447,
            "count": 4285082,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01754852207,
            "variance": 0.0003079506268
          },
          {
            "average": 3.197039637,
            "count": 4285082,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.392534053,
            "variance": 11.5092873
          },
          {
            "average": -1.813347985,
            "count": 4285082,
            "maximum": 16.42200089,
            "minimum": -19.78800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.9800913,
            "variance": 99.60222236
          },
          {
            "average": 0.4968327327,
            "count": 4285082,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999900267,
            "variance": 0.2499900268
          },
          {
            "average": 664.6567508,
            "count": 4285082,
            "maximum": 710,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.6382121,
            "variance": 468.212223
          },
          {
            "average": 222295700.8,
            "count": 4285082,
            "maximum": 222299415.3,
            "minimum": 222294519.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1706.649628,
            "variance": 2912652.953
          },
          {
            "average": 0.4968327327,
            "count": 4285082,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999900267,
            "variance": 0.2499900268
          },
          {
            "average": 0,
            "count": 4285082,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4285082,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4285082,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1826408456,
            "count": 4285082,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3863718442,
            "variance": 0.149283202
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129585.1944,
          2280298.457,
          8.446325737,
          -129092.3744,
          2280774.117,
          18.50632574
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129585.19440655896,
                2280298.456696119,
                8.446325737377986
              ],
              [
                -129585.19440655896,
                2280774.1166961193,
                8.446325737377986
              ],
              [
                -129092.37440655896,
                2280774.1166961193,
                18.50632573737799
              ],
              [
                -129092.37440655896,
                2280298.456696119,
                18.50632573737799
              ],
              [
                -129585.19440655896,
                2280298.456696119,
                8.446325737377986
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:36:55+00:00",
        "end_time": "2018-09-29T22:15:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0290.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0290.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0290.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0290.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4076333,
            70.4759659,
            8.446325737,
            -157.3940578,
            70.48053849,
            18.50632574
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.40699220582906,
                  70.47596589687342,
                  8.446325737377986
                ],
                [
                  -157.40763333238135,
                  70.48030789540036,
                  8.446325737377986
                ],
                [
                  -157.39469651097136,
                  70.48053849386734,
                  18.50632573737799
                ],
                [
                  -157.39405780990793,
                  70.47619644620451,
                  18.50632573737799
                ],
                [
                  -157.40699220582906,
                  70.47596589687342,
                  8.446325737377986
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0290.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0290.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:36:55Z",
            "pc:count": 4285082,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129332.4809,
                "count": 4285082,
                "maximum": -129092.3744,
                "minimum": -129585.1944,
                "name": "X",
                "position": 0,
                "stddev": 139.0740896,
                "variance": 19341.60239
              },
              {
                "average": 2280529.122,
                "count": 4285082,
                "maximum": 2280774.117,
                "minimum": 2280298.457,
                "name": "Y",
                "position": 1,
                "stddev": 127.518386,
                "variance": 16260.93877
              },
              {
                "average": 13.03571517,
                "count": 4285082,
                "maximum": 18.50632574,
                "minimum": 8.446325737,
                "name": "Z",
                "position": 2,
                "stddev": 3.660270529,
                "variance": 13.39758034
              },
              {
                "average": 36090.78693,
                "count": 4285082,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 16473.43526,
                "variance": 271374069.3
              },
              {
                "average": 1.000210031,
                "count": 4285082,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01449092552,
                "variance": 0.0002099869226
              },
              {
                "average": 1.000420062,
                "count": 4285082,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02049111073,
                "variance": 0.0004198856191
              },
              {
                "average": 0.5054542714,
                "count": 4285082,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999703084,
                "variance": 0.2499703093
              },
              {
                "average": 0.000308045447,
                "count": 4285082,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01754852207,
                "variance": 0.0003079506268
              },
              {
                "average": 3.197039637,
                "count": 4285082,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.392534053,
                "variance": 11.5092873
              },
              {
                "average": -1.813347985,
                "count": 4285082,
                "maximum": 16.42200089,
                "minimum": -19.78800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.9800913,
                "variance": 99.60222236
              },
              {
                "average": 0.4968327327,
                "count": 4285082,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999900267,
                "variance": 0.2499900268
              },
              {
                "average": 664.6567508,
                "count": 4285082,
                "maximum": 710,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.6382121,
                "variance": 468.212223
              },
              {
                "average": 222295700.8,
                "count": 4285082,
                "maximum": 222299415.3,
                "minimum": 222294519.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1706.649628,
                "variance": 2912652.953
              },
              {
                "average": 0.4968327327,
                "count": 4285082,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999900267,
                "variance": 0.2499900268
              },
              {
                "average": 0,
                "count": 4285082,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4285082,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4285082,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1826408456,
                "count": 4285082,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3863718442,
                "variance": 0.149283202
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129585.1944,
              2280298.457,
              8.446325737,
              -129092.3744,
              2280774.117,
              18.50632574
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129585.19440655896,
                    2280298.456696119,
                    8.446325737377986
                  ],
                  [
                    -129585.19440655896,
                    2280774.1166961193,
                    8.446325737377986
                  ],
                  [
                    -129092.37440655896,
                    2280774.1166961193,
                    18.50632573737799
                  ],
                  [
                    -129092.37440655896,
                    2280298.456696119,
                    18.50632573737799
                  ],
                  [
                    -129585.19440655896,
                    2280298.456696119,
                    8.446325737377986
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:36:55+00:00",
            "end_time": "2018-09-29T22:15:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1511.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8109886171262,
              71.23543343160841,
              10.56935405011365
            ],
            [
              -156.81153342393011,
              71.23978039667021,
              10.56935405011365
            ],
            [
              -156.79807719717073,
              71.23997256002698,
              13.08935405011365
            ],
            [
              -156.79753499166867,
              71.23562555217063,
              13.08935405011365
            ],
            [
              -156.8109886171262,
              71.23543343160841,
              10.56935405011365
            ]
          ]
        ]
      },
      "bbox": [
        -156.8115334,
        71.23543343,
        10.56935405,
        -156.797535,
        71.23997256,
        13.08935405
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:17Z",
        "pc:count": 3741794,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103174.3238,
            "count": 3741794,
            "maximum": -102927.7232,
            "minimum": -103423.3032,
            "name": "X",
            "position": 0,
            "stddev": 136.003642,
            "variance": 18496.99063
          },
          {
            "average": 2362291.008,
            "count": 3741794,
            "maximum": 2362535.651,
            "minimum": 2362061.891,
            "name": "Y",
            "position": 1,
            "stddev": 128.3402967,
            "variance": 16471.23176
          },
          {
            "average": 11.84390558,
            "count": 3741794,
            "maximum": 13.08935405,
            "minimum": 10.56935405,
            "name": "Z",
            "position": 2,
            "stddev": 0.4960845746,
            "variance": 0.2460999051
          },
          {
            "average": 39241.92937,
            "count": 3741794,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13414.55443,
            "variance": 179950270.4
          },
          {
            "average": 1,
            "count": 3741794,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3741794,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.508467596,
            "count": 3741794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999283615,
            "variance": 0.2499283666
          },
          {
            "average": 0.0004500514994,
            "count": 3741794,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02120964576,
            "variance": 0.0004498490732
          },
          {
            "average": 1.505221292,
            "count": 3741794,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.556057602,
            "variance": 2.42131526
          },
          {
            "average": -1.951701903,
            "count": 3741794,
            "maximum": 16.4279995,
            "minimum": -19.84799957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.99291919,
            "variance": 120.8442723
          },
          {
            "average": 0.5269341391,
            "count": 3741794,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992740918,
            "variance": 0.2492746188
          },
          {
            "average": 428.2129895,
            "count": 3741794,
            "maximum": 467,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.25154633,
            "variance": 451.6282216
          },
          {
            "average": 220493047.8,
            "count": 3741794,
            "maximum": 220727257.8,
            "minimum": 220420203.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129940.8565,
            "variance": 16884626180.0
          },
          {
            "average": 0.5269341391,
            "count": 3741794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992740918,
            "variance": 0.2492746188
          },
          {
            "average": 0,
            "count": 3741794,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3741794,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3741794,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2292320208,
            "count": 3741794,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4203388498,
            "variance": 0.1766847487
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103423.3032,
          2362061.891,
          10.56935405,
          -102927.7232,
          2362535.651,
          13.08935405
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103423.30323756496,
                2362061.89074499,
                10.56935405011365
              ],
              [
                -103423.30323756496,
                2362535.65074499,
                10.56935405011365
              ],
              [
                -102927.72323756498,
                2362535.65074499,
                13.08935405011365
              ],
              [
                -102927.72323756498,
                2362061.89074499,
                13.08935405011365
              ],
              [
                -103423.30323756496,
                2362061.89074499,
                10.56935405011365
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:17+00:00",
        "end_time": "2018-09-08T05:36:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1511.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1511.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1511.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1511.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8115334,
            71.23543343,
            10.56935405,
            -156.797535,
            71.23997256,
            13.08935405
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8109886171262,
                  71.23543343160841,
                  10.56935405011365
                ],
                [
                  -156.81153342393011,
                  71.23978039667021,
                  10.56935405011365
                ],
                [
                  -156.79807719717073,
                  71.23997256002698,
                  13.08935405011365
                ],
                [
                  -156.79753499166867,
                  71.23562555217063,
                  13.08935405011365
                ],
                [
                  -156.8109886171262,
                  71.23543343160841,
                  10.56935405011365
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1511.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1511.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:17Z",
            "pc:count": 3741794,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103174.3238,
                "count": 3741794,
                "maximum": -102927.7232,
                "minimum": -103423.3032,
                "name": "X",
                "position": 0,
                "stddev": 136.003642,
                "variance": 18496.99063
              },
              {
                "average": 2362291.008,
                "count": 3741794,
                "maximum": 2362535.651,
                "minimum": 2362061.891,
                "name": "Y",
                "position": 1,
                "stddev": 128.3402967,
                "variance": 16471.23176
              },
              {
                "average": 11.84390558,
                "count": 3741794,
                "maximum": 13.08935405,
                "minimum": 10.56935405,
                "name": "Z",
                "position": 2,
                "stddev": 0.4960845746,
                "variance": 0.2460999051
              },
              {
                "average": 39241.92937,
                "count": 3741794,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13414.55443,
                "variance": 179950270.4
              },
              {
                "average": 1,
                "count": 3741794,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3741794,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.508467596,
                "count": 3741794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999283615,
                "variance": 0.2499283666
              },
              {
                "average": 0.0004500514994,
                "count": 3741794,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02120964576,
                "variance": 0.0004498490732
              },
              {
                "average": 1.505221292,
                "count": 3741794,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.556057602,
                "variance": 2.42131526
              },
              {
                "average": -1.951701903,
                "count": 3741794,
                "maximum": 16.4279995,
                "minimum": -19.84799957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.99291919,
                "variance": 120.8442723
              },
              {
                "average": 0.5269341391,
                "count": 3741794,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992740918,
                "variance": 0.2492746188
              },
              {
                "average": 428.2129895,
                "count": 3741794,
                "maximum": 467,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.25154633,
                "variance": 451.6282216
              },
              {
                "average": 220493047.8,
                "count": 3741794,
                "maximum": 220727257.8,
                "minimum": 220420203.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129940.8565,
                "variance": 16884626180.0
              },
              {
                "average": 0.5269341391,
                "count": 3741794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992740918,
                "variance": 0.2492746188
              },
              {
                "average": 0,
                "count": 3741794,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3741794,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3741794,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2292320208,
                "count": 3741794,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4203388498,
                "variance": 0.1766847487
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103423.3032,
              2362061.891,
              10.56935405,
              -102927.7232,
              2362535.651,
              13.08935405
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103423.30323756496,
                    2362061.89074499,
                    10.56935405011365
                  ],
                  [
                    -103423.30323756496,
                    2362535.65074499,
                    10.56935405011365
                  ],
                  [
                    -102927.72323756498,
                    2362535.65074499,
                    13.08935405011365
                  ],
                  [
                    -102927.72323756498,
                    2362061.89074499,
                    13.08935405011365
                  ],
                  [
                    -103423.30323756496,
                    2362061.89074499,
                    10.56935405011365
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:17+00:00",
            "end_time": "2018-09-08T05:36:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0245.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.39498109970143,
              70.46772903093155,
              8.419722490706874
            ],
            [
              -157.3956198476228,
              70.47207159336006,
              8.419722490706874
            ],
            [
              -157.38268751901947,
              70.4723013672369,
              280.43972249070686
            ],
            [
              -157.38205119535536,
              70.4679587558643,
              280.43972249070686
            ],
            [
              -157.39498109970143,
              70.46772903093155,
              8.419722490706874
            ]
          ]
        ]
      },
      "bbox": [
        -157.3956198,
        70.46772903,
        8.419722491,
        -157.3820512,
        70.47230137,
        280.4397225
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:16Z",
        "pc:count": 4219207,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128919.3994,
            "count": 4219207,
            "maximum": -128681.9789,
            "minimum": -129174.7989,
            "name": "X",
            "position": 0,
            "stddev": 129.2419679,
            "variance": 16703.48626
          },
          {
            "average": 2279615.261,
            "count": 4219207,
            "maximum": 2279850.796,
            "minimum": 2279375.056,
            "name": "Y",
            "position": 1,
            "stddev": 132.703487,
            "variance": 17610.21545
          },
          {
            "average": 13.10200478,
            "count": 4219207,
            "maximum": 280.4397225,
            "minimum": 8.419722491,
            "name": "Z",
            "position": 2,
            "stddev": 2.054121243,
            "variance": 4.219414079
          },
          {
            "average": 38123.45361,
            "count": 4219207,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 14381.57905,
            "variance": 206829816.1
          },
          {
            "average": 1.000152635,
            "count": 4219207,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01235362522,
            "variance": 0.0001526120561
          },
          {
            "average": 1.000305982,
            "count": 4219207,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01748965742,
            "variance": 0.0003058881168
          },
          {
            "average": 0.5002622531,
            "count": 4219207,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999905,
            "variance": 0.2499999905
          },
          {
            "average": 0.0003218614304,
            "count": 4219207,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01793761165,
            "variance": 0.0003217579118
          },
          {
            "average": 2.839527902,
            "count": 4219207,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.203766321,
            "variance": 10.26411864
          },
          {
            "average": -0.2837805673,
            "count": 4219207,
            "maximum": 20.42399979,
            "minimum": -19.73399925,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.760311695,
            "variance": 95.26368438
          },
          {
            "average": 0.4880879274,
            "count": 4219207,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998581416,
            "variance": 0.2498581617
          },
          {
            "average": 664.8070882,
            "count": 4219207,
            "maximum": 711,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.33742526,
            "variance": 336.2611651
          },
          {
            "average": 222295990.1,
            "count": 4219207,
            "maximum": 222299676.4,
            "minimum": 222295207.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1384.413146,
            "variance": 1916599.76
          },
          {
            "average": 0.4880879274,
            "count": 4219207,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998581416,
            "variance": 0.2498581617
          },
          {
            "average": 0,
            "count": 4219207,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4219207,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4219207,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1675568418,
            "count": 4219207,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3734723278,
            "variance": 0.1394815797
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129174.7989,
          2279375.056,
          8.419722491,
          -128681.9789,
          2279850.796,
          280.4397225
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129174.79890463257,
                2279375.055702771,
                8.419722490706874
              ],
              [
                -129174.79890463257,
                2279850.7957027713,
                8.419722490706874
              ],
              [
                -128681.97890463256,
                2279850.7957027713,
                280.43972249070686
              ],
              [
                -128681.97890463256,
                2279375.055702771,
                280.43972249070686
              ],
              [
                -129174.79890463257,
                2279375.055702771,
                8.419722490706874
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:16+00:00",
        "end_time": "2018-09-29T22:26:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0245.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0245.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0245.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0245.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3956198,
            70.46772903,
            8.419722491,
            -157.3820512,
            70.47230137,
            280.4397225
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.39498109970143,
                  70.46772903093155,
                  8.419722490706874
                ],
                [
                  -157.3956198476228,
                  70.47207159336006,
                  8.419722490706874
                ],
                [
                  -157.38268751901947,
                  70.4723013672369,
                  280.43972249070686
                ],
                [
                  -157.38205119535536,
                  70.4679587558643,
                  280.43972249070686
                ],
                [
                  -157.39498109970143,
                  70.46772903093155,
                  8.419722490706874
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0245.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0245.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:16Z",
            "pc:count": 4219207,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128919.3994,
                "count": 4219207,
                "maximum": -128681.9789,
                "minimum": -129174.7989,
                "name": "X",
                "position": 0,
                "stddev": 129.2419679,
                "variance": 16703.48626
              },
              {
                "average": 2279615.261,
                "count": 4219207,
                "maximum": 2279850.796,
                "minimum": 2279375.056,
                "name": "Y",
                "position": 1,
                "stddev": 132.703487,
                "variance": 17610.21545
              },
              {
                "average": 13.10200478,
                "count": 4219207,
                "maximum": 280.4397225,
                "minimum": 8.419722491,
                "name": "Z",
                "position": 2,
                "stddev": 2.054121243,
                "variance": 4.219414079
              },
              {
                "average": 38123.45361,
                "count": 4219207,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 14381.57905,
                "variance": 206829816.1
              },
              {
                "average": 1.000152635,
                "count": 4219207,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01235362522,
                "variance": 0.0001526120561
              },
              {
                "average": 1.000305982,
                "count": 4219207,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01748965742,
                "variance": 0.0003058881168
              },
              {
                "average": 0.5002622531,
                "count": 4219207,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999905,
                "variance": 0.2499999905
              },
              {
                "average": 0.0003218614304,
                "count": 4219207,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01793761165,
                "variance": 0.0003217579118
              },
              {
                "average": 2.839527902,
                "count": 4219207,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.203766321,
                "variance": 10.26411864
              },
              {
                "average": -0.2837805673,
                "count": 4219207,
                "maximum": 20.42399979,
                "minimum": -19.73399925,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.760311695,
                "variance": 95.26368438
              },
              {
                "average": 0.4880879274,
                "count": 4219207,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998581416,
                "variance": 0.2498581617
              },
              {
                "average": 664.8070882,
                "count": 4219207,
                "maximum": 711,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.33742526,
                "variance": 336.2611651
              },
              {
                "average": 222295990.1,
                "count": 4219207,
                "maximum": 222299676.4,
                "minimum": 222295207.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1384.413146,
                "variance": 1916599.76
              },
              {
                "average": 0.4880879274,
                "count": 4219207,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998581416,
                "variance": 0.2498581617
              },
              {
                "average": 0,
                "count": 4219207,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4219207,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4219207,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1675568418,
                "count": 4219207,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3734723278,
                "variance": 0.1394815797
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129174.7989,
              2279375.056,
              8.419722491,
              -128681.9789,
              2279850.796,
              280.4397225
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129174.79890463257,
                    2279375.055702771,
                    8.419722490706874
                  ],
                  [
                    -129174.79890463257,
                    2279850.7957027713,
                    8.419722490706874
                  ],
                  [
                    -128681.97890463256,
                    2279850.7957027713,
                    280.43972249070686
                  ],
                  [
                    -128681.97890463256,
                    2279375.055702771,
                    280.43972249070686
                  ],
                  [
                    -129174.79890463257,
                    2279375.055702771,
                    8.419722490706874
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:16+00:00",
            "end_time": "2018-09-29T22:26:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0265.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.43161334763207,
              70.47194591659029,
              20.34652362421506
            ],
            [
              -157.43225915379398,
              70.47628882664445,
              20.34652362421506
            ],
            [
              -157.41932325494807,
              70.4765211161751,
              28.98652362421506
            ],
            [
              -157.41867987415262,
              70.4721781566254,
              28.98652362421506
            ],
            [
              -157.43161334763207,
              70.47194591659029,
              20.34652362421506
            ]
          ]
        ]
      },
      "bbox": [
        -157.4322592,
        70.47194592,
        20.34652362,
        -157.4186799,
        70.47652112,
        28.98652362
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:26Z",
        "pc:count": 6071229,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130316.2829,
            "count": 6071229,
            "maximum": -130050.6668,
            "minimum": -130543.5468,
            "name": "X",
            "position": 0,
            "stddev": 129.8914048,
            "variance": 16871.77703
          },
          {
            "average": 2280146.886,
            "count": 6071229,
            "maximum": 2280383.225,
            "minimum": 2279907.445,
            "name": "Y",
            "position": 1,
            "stddev": 130.5716685,
            "variance": 17048.96061
          },
          {
            "average": 25.57896638,
            "count": 6071229,
            "maximum": 28.98652362,
            "minimum": 20.34652362,
            "name": "Z",
            "position": 2,
            "stddev": 2.889040316,
            "variance": 8.346553946
          },
          {
            "average": 42877.48801,
            "count": 6071229,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11591.58685,
            "variance": 134364885.8
          },
          {
            "average": 1.00032794,
            "count": 6071229,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0181061509,
            "variance": 0.0003278327006
          },
          {
            "average": 1.000656045,
            "count": 6071229,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02560497621,
            "variance": 0.0006556148068
          },
          {
            "average": 0.5054538381,
            "count": 6071229,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999702959,
            "variance": 0.2499702968
          },
          {
            "average": 0.0002900565932,
            "count": 6071229,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01702857916,
            "variance": 0.0002899725081
          },
          {
            "average": 1.238711305,
            "count": 6071229,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4338844982,
            "variance": 0.1882557578
          },
          {
            "average": -3.015460502,
            "count": 6071229,
            "maximum": 16.27199936,
            "minimum": -19.73399925,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.30734428,
            "variance": 106.241346
          },
          {
            "average": 0.4834612564,
            "count": 6071229,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997264363,
            "variance": 0.2497265111
          },
          {
            "average": 663.8523892,
            "count": 6071229,
            "maximum": 708,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.88937214,
            "variance": 320.0296357
          },
          {
            "average": 222295791.1,
            "count": 6071229,
            "maximum": 222298846.4,
            "minimum": 222294845.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1248.98033,
            "variance": 1559951.864
          },
          {
            "average": 0.4834612564,
            "count": 6071229,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997264363,
            "variance": 0.2497265111
          },
          {
            "average": 0,
            "count": 6071229,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6071229,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6071229,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1981554311,
            "count": 6071229,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3986099377,
            "variance": 0.1588898824
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130543.5468,
          2279907.445,
          20.34652362,
          -130050.6668,
          2280383.225,
          28.98652362
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130543.54681597438,
                2279907.444922374,
                20.34652362421506
              ],
              [
                -130543.54681597438,
                2280383.2249223744,
                20.34652362421506
              ],
              [
                -130050.66681597437,
                2280383.2249223744,
                28.98652362421506
              ],
              [
                -130050.66681597437,
                2279907.444922374,
                28.98652362421506
              ],
              [
                -130543.54681597438,
                2279907.444922374,
                20.34652362421506
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:26+00:00",
        "end_time": "2018-09-29T22:20:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0265.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0265.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0265.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0265.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4322592,
            70.47194592,
            20.34652362,
            -157.4186799,
            70.47652112,
            28.98652362
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.43161334763207,
                  70.47194591659029,
                  20.34652362421506
                ],
                [
                  -157.43225915379398,
                  70.47628882664445,
                  20.34652362421506
                ],
                [
                  -157.41932325494807,
                  70.4765211161751,
                  28.98652362421506
                ],
                [
                  -157.41867987415262,
                  70.4721781566254,
                  28.98652362421506
                ],
                [
                  -157.43161334763207,
                  70.47194591659029,
                  20.34652362421506
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0265.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0265.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:26Z",
            "pc:count": 6071229,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130316.2829,
                "count": 6071229,
                "maximum": -130050.6668,
                "minimum": -130543.5468,
                "name": "X",
                "position": 0,
                "stddev": 129.8914048,
                "variance": 16871.77703
              },
              {
                "average": 2280146.886,
                "count": 6071229,
                "maximum": 2280383.225,
                "minimum": 2279907.445,
                "name": "Y",
                "position": 1,
                "stddev": 130.5716685,
                "variance": 17048.96061
              },
              {
                "average": 25.57896638,
                "count": 6071229,
                "maximum": 28.98652362,
                "minimum": 20.34652362,
                "name": "Z",
                "position": 2,
                "stddev": 2.889040316,
                "variance": 8.346553946
              },
              {
                "average": 42877.48801,
                "count": 6071229,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11591.58685,
                "variance": 134364885.8
              },
              {
                "average": 1.00032794,
                "count": 6071229,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0181061509,
                "variance": 0.0003278327006
              },
              {
                "average": 1.000656045,
                "count": 6071229,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02560497621,
                "variance": 0.0006556148068
              },
              {
                "average": 0.5054538381,
                "count": 6071229,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999702959,
                "variance": 0.2499702968
              },
              {
                "average": 0.0002900565932,
                "count": 6071229,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01702857916,
                "variance": 0.0002899725081
              },
              {
                "average": 1.238711305,
                "count": 6071229,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4338844982,
                "variance": 0.1882557578
              },
              {
                "average": -3.015460502,
                "count": 6071229,
                "maximum": 16.27199936,
                "minimum": -19.73399925,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.30734428,
                "variance": 106.241346
              },
              {
                "average": 0.4834612564,
                "count": 6071229,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997264363,
                "variance": 0.2497265111
              },
              {
                "average": 663.8523892,
                "count": 6071229,
                "maximum": 708,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.88937214,
                "variance": 320.0296357
              },
              {
                "average": 222295791.1,
                "count": 6071229,
                "maximum": 222298846.4,
                "minimum": 222294845.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1248.98033,
                "variance": 1559951.864
              },
              {
                "average": 0.4834612564,
                "count": 6071229,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997264363,
                "variance": 0.2497265111
              },
              {
                "average": 0,
                "count": 6071229,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6071229,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6071229,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1981554311,
                "count": 6071229,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3986099377,
                "variance": 0.1588898824
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130543.5468,
              2279907.445,
              20.34652362,
              -130050.6668,
              2280383.225,
              28.98652362
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130543.54681597438,
                    2279907.444922374,
                    20.34652362421506
                  ],
                  [
                    -130543.54681597438,
                    2280383.2249223744,
                    20.34652362421506
                  ],
                  [
                    -130050.66681597437,
                    2280383.2249223744,
                    28.98652362421506
                  ],
                  [
                    -130050.66681597437,
                    2279907.444922374,
                    28.98652362421506
                  ],
                  [
                    -130543.54681597438,
                    2279907.444922374,
                    20.34652362421506
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:26+00:00",
            "end_time": "2018-09-29T22:20:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1512.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79825959351328,
              71.23535284899454,
              9.474633871430624
            ],
            [
              -156.79880190988135,
              71.23969966341762,
              9.474633871430624
            ],
            [
              -156.78534833830668,
              71.2398909164132,
              11.694633871430623
            ],
            [
              -156.7848086226712,
              71.23554405939996,
              11.694633871430623
            ],
            [
              -156.79825959351328,
              71.23535284899454,
              9.474633871430624
            ]
          ]
        ]
      },
      "bbox": [
        -156.7988019,
        71.23535285,
        9.474633871,
        -156.7848086,
        71.23989092,
        11.69463387
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:11Z",
        "pc:count": 3874274,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102713.2507,
            "count": 3874274,
            "maximum": -102460.1381,
            "minimum": -102955.6181,
            "name": "X",
            "position": 0,
            "stddev": 131.1212122,
            "variance": 17192.77228
          },
          {
            "average": 2362263.479,
            "count": 3874274,
            "maximum": 2362507.086,
            "minimum": 2362033.346,
            "name": "Y",
            "position": 1,
            "stddev": 127.8023776,
            "variance": 16333.44773
          },
          {
            "average": 10.58254415,
            "count": 3874274,
            "maximum": 11.69463387,
            "minimum": 9.474633871,
            "name": "Z",
            "position": 2,
            "stddev": 0.2928926701,
            "variance": 0.08578611621
          },
          {
            "average": 35752.53763,
            "count": 3874274,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14187.10628,
            "variance": 201273984.5
          },
          {
            "average": 1,
            "count": 3874274,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3874274,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5056810644,
            "count": 3874274,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499967789,
            "variance": 0.24996779
          },
          {
            "average": 0.0004715722223,
            "count": 3874274,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02171059565,
            "variance": 0.0004713499636
          },
          {
            "average": 1.89604504,
            "count": 3874274,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.266719071,
            "variance": 5.138015349
          },
          {
            "average": -3.118975957,
            "count": 3874274,
            "maximum": 16.42200089,
            "minimum": -19.79400063,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.49532115,
            "variance": 110.1517661
          },
          {
            "average": 0.473592988,
            "count": 3874274,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993022472,
            "variance": 0.2493027341
          },
          {
            "average": 429.1651269,
            "count": 3874274,
            "maximum": 467,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.07840925,
            "variance": 444.2993366
          },
          {
            "average": 220495350.4,
            "count": 3874274,
            "maximum": 220727251.1,
            "minimum": 220420202.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 130967.8381,
            "variance": 17152574620.0
          },
          {
            "average": 0.473592988,
            "count": 3874274,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993022472,
            "variance": 0.2493027341
          },
          {
            "average": 0,
            "count": 3874274,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3874274,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3874274,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1952564532,
            "count": 3874274,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3963980465,
            "variance": 0.1571314112
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102955.6181,
          2362033.346,
          9.474633871,
          -102460.1381,
          2362507.086,
          11.69463387
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102955.61805340312,
                2362033.3455486083,
                9.474633871430624
              ],
              [
                -102955.61805340312,
                2362507.0855486086,
                9.474633871430624
              ],
              [
                -102460.1380534031,
                2362507.0855486086,
                11.694633871430623
              ],
              [
                -102460.1380534031,
                2362033.3455486083,
                11.694633871430623
              ],
              [
                -102955.61805340312,
                2362033.3455486083,
                9.474633871430624
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:11+00:00",
        "end_time": "2018-09-08T05:36:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1512.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1512.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1512.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1512.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7988019,
            71.23535285,
            9.474633871,
            -156.7848086,
            71.23989092,
            11.69463387
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79825959351328,
                  71.23535284899454,
                  9.474633871430624
                ],
                [
                  -156.79880190988135,
                  71.23969966341762,
                  9.474633871430624
                ],
                [
                  -156.78534833830668,
                  71.2398909164132,
                  11.694633871430623
                ],
                [
                  -156.7848086226712,
                  71.23554405939996,
                  11.694633871430623
                ],
                [
                  -156.79825959351328,
                  71.23535284899454,
                  9.474633871430624
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1512.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1512.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:11Z",
            "pc:count": 3874274,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102713.2507,
                "count": 3874274,
                "maximum": -102460.1381,
                "minimum": -102955.6181,
                "name": "X",
                "position": 0,
                "stddev": 131.1212122,
                "variance": 17192.77228
              },
              {
                "average": 2362263.479,
                "count": 3874274,
                "maximum": 2362507.086,
                "minimum": 2362033.346,
                "name": "Y",
                "position": 1,
                "stddev": 127.8023776,
                "variance": 16333.44773
              },
              {
                "average": 10.58254415,
                "count": 3874274,
                "maximum": 11.69463387,
                "minimum": 9.474633871,
                "name": "Z",
                "position": 2,
                "stddev": 0.2928926701,
                "variance": 0.08578611621
              },
              {
                "average": 35752.53763,
                "count": 3874274,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14187.10628,
                "variance": 201273984.5
              },
              {
                "average": 1,
                "count": 3874274,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3874274,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5056810644,
                "count": 3874274,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499967789,
                "variance": 0.24996779
              },
              {
                "average": 0.0004715722223,
                "count": 3874274,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02171059565,
                "variance": 0.0004713499636
              },
              {
                "average": 1.89604504,
                "count": 3874274,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.266719071,
                "variance": 5.138015349
              },
              {
                "average": -3.118975957,
                "count": 3874274,
                "maximum": 16.42200089,
                "minimum": -19.79400063,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.49532115,
                "variance": 110.1517661
              },
              {
                "average": 0.473592988,
                "count": 3874274,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993022472,
                "variance": 0.2493027341
              },
              {
                "average": 429.1651269,
                "count": 3874274,
                "maximum": 467,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.07840925,
                "variance": 444.2993366
              },
              {
                "average": 220495350.4,
                "count": 3874274,
                "maximum": 220727251.1,
                "minimum": 220420202.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 130967.8381,
                "variance": 17152574620.0
              },
              {
                "average": 0.473592988,
                "count": 3874274,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993022472,
                "variance": 0.2493027341
              },
              {
                "average": 0,
                "count": 3874274,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3874274,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3874274,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1952564532,
                "count": 3874274,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3963980465,
                "variance": 0.1571314112
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102955.6181,
              2362033.346,
              9.474633871,
              -102460.1381,
              2362507.086,
              11.69463387
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102955.61805340312,
                    2362033.3455486083,
                    9.474633871430624
                  ],
                  [
                    -102955.61805340312,
                    2362507.0855486086,
                    9.474633871430624
                  ],
                  [
                    -102460.1380534031,
                    2362507.0855486086,
                    11.694633871430623
                  ],
                  [
                    -102460.1380534031,
                    2362033.3455486083,
                    11.694633871430623
                  ],
                  [
                    -102955.61805340312,
                    2362033.3455486083,
                    9.474633871430624
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:11+00:00",
            "end_time": "2018-09-08T05:36:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0262.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.46836575942487,
              70.47205756884917,
              20.11499996255936
            ],
            [
              -157.46901839670582,
              70.47639980904438,
              20.11499996255936
            ],
            [
              -157.45608595609446,
              70.47663453193708,
              20.61499996255936
            ],
            [
              -157.455435743028,
              70.47229224173523,
              20.61499996255936
            ],
            [
              -157.46836575942487,
              70.47205756884917,
              20.11499996255936
            ]
          ]
        ]
      },
      "bbox": [
        -157.4690184,
        70.47205757,
        20.11499996,
        -157.4554357,
        70.47663453,
        20.61499996
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:35Z",
        "pc:count": 3505923,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131688.9033,
            "count": 3505923,
            "maximum": -131446.9995,
            "minimum": -131939.7595,
            "name": "X",
            "position": 0,
            "stddev": 135.5034941,
            "variance": 18361.19691
          },
          {
            "average": 2280227.536,
            "count": 3505923,
            "maximum": 2280467.994,
            "minimum": 2279992.274,
            "name": "Y",
            "position": 1,
            "stddev": 130.2099922,
            "variance": 16954.64206
          },
          {
            "average": 20.32631645,
            "count": 3505923,
            "maximum": 20.61499996,
            "minimum": 20.11499996,
            "name": "Z",
            "position": 2,
            "stddev": 0.04965710077,
            "variance": 0.002465827657
          },
          {
            "average": 11233.7294,
            "count": 3505923,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 7906.017583,
            "variance": 62505114.02
          },
          {
            "average": 1,
            "count": 3505923,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3505923,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022104022,
            "count": 3505923,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951854,
            "variance": 0.2499951854
          },
          {
            "average": 0.0004403975786,
            "count": 3505923,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0209810332,
            "variance": 0.0004402037541
          },
          {
            "average": 7.359053522,
            "count": 3505923,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.079075819,
            "variance": 9.480707899
          },
          {
            "average": -1.049816066,
            "count": 3505923,
            "maximum": 16.27799988,
            "minimum": -19.75200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.640829297,
            "variance": 74.66393094
          },
          {
            "average": 0.4871053928,
            "count": 3505923,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998337727,
            "variance": 0.2498338004
          },
          {
            "average": 663.3681387,
            "count": 3505923,
            "maximum": 706,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.03495699,
            "variance": 325.2596737
          },
          {
            "average": 222295599.1,
            "count": 3505923,
            "maximum": 222298255.7,
            "minimum": 222294824.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1094.642594,
            "variance": 1198242.408
          },
          {
            "average": 0.4871053928,
            "count": 3505923,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998337727,
            "variance": 0.2498338004
          },
          {
            "average": 0,
            "count": 3505923,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3505923,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3505923,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0660858781,
            "count": 3505923,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2484321888,
            "variance": 0.06171855242
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131939.7595,
          2279992.274,
          20.11499996,
          -131446.9995,
          2280467.994,
          20.61499996
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131939.75954118953,
                2279992.2743219915,
                20.11499996255936
              ],
              [
                -131939.75954118953,
                2280467.994321991,
                20.11499996255936
              ],
              [
                -131446.99954118952,
                2280467.994321991,
                20.61499996255936
              ],
              [
                -131446.99954118952,
                2279992.2743219915,
                20.61499996255936
              ],
              [
                -131939.75954118953,
                2279992.2743219915,
                20.11499996255936
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:35+00:00",
        "end_time": "2018-09-29T22:20:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0262.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0262.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0262.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0262.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4690184,
            70.47205757,
            20.11499996,
            -157.4554357,
            70.47663453,
            20.61499996
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.46836575942487,
                  70.47205756884917,
                  20.11499996255936
                ],
                [
                  -157.46901839670582,
                  70.47639980904438,
                  20.11499996255936
                ],
                [
                  -157.45608595609446,
                  70.47663453193708,
                  20.61499996255936
                ],
                [
                  -157.455435743028,
                  70.47229224173523,
                  20.61499996255936
                ],
                [
                  -157.46836575942487,
                  70.47205756884917,
                  20.11499996255936
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0262.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0262.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:35Z",
            "pc:count": 3505923,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131688.9033,
                "count": 3505923,
                "maximum": -131446.9995,
                "minimum": -131939.7595,
                "name": "X",
                "position": 0,
                "stddev": 135.5034941,
                "variance": 18361.19691
              },
              {
                "average": 2280227.536,
                "count": 3505923,
                "maximum": 2280467.994,
                "minimum": 2279992.274,
                "name": "Y",
                "position": 1,
                "stddev": 130.2099922,
                "variance": 16954.64206
              },
              {
                "average": 20.32631645,
                "count": 3505923,
                "maximum": 20.61499996,
                "minimum": 20.11499996,
                "name": "Z",
                "position": 2,
                "stddev": 0.04965710077,
                "variance": 0.002465827657
              },
              {
                "average": 11233.7294,
                "count": 3505923,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 7906.017583,
                "variance": 62505114.02
              },
              {
                "average": 1,
                "count": 3505923,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3505923,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022104022,
                "count": 3505923,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951854,
                "variance": 0.2499951854
              },
              {
                "average": 0.0004403975786,
                "count": 3505923,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0209810332,
                "variance": 0.0004402037541
              },
              {
                "average": 7.359053522,
                "count": 3505923,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.079075819,
                "variance": 9.480707899
              },
              {
                "average": -1.049816066,
                "count": 3505923,
                "maximum": 16.27799988,
                "minimum": -19.75200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.640829297,
                "variance": 74.66393094
              },
              {
                "average": 0.4871053928,
                "count": 3505923,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998337727,
                "variance": 0.2498338004
              },
              {
                "average": 663.3681387,
                "count": 3505923,
                "maximum": 706,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.03495699,
                "variance": 325.2596737
              },
              {
                "average": 222295599.1,
                "count": 3505923,
                "maximum": 222298255.7,
                "minimum": 222294824.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1094.642594,
                "variance": 1198242.408
              },
              {
                "average": 0.4871053928,
                "count": 3505923,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998337727,
                "variance": 0.2498338004
              },
              {
                "average": 0,
                "count": 3505923,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3505923,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3505923,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0660858781,
                "count": 3505923,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2484321888,
                "variance": 0.06171855242
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131939.7595,
              2279992.274,
              20.11499996,
              -131446.9995,
              2280467.994,
              20.61499996
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131939.75954118953,
                    2279992.2743219915,
                    20.11499996255936
                  ],
                  [
                    -131939.75954118953,
                    2280467.994321991,
                    20.11499996255936
                  ],
                  [
                    -131446.99954118952,
                    2280467.994321991,
                    20.61499996255936
                  ],
                  [
                    -131446.99954118952,
                    2279992.2743219915,
                    20.61499996255936
                  ],
                  [
                    -131939.75954118953,
                    2279992.2743219915,
                    20.11499996255936
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:35+00:00",
            "end_time": "2018-09-29T22:20:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1452.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.862139435509,
              71.23165152308792,
              1.935032215362499
            ],
            [
              -156.8626941735553,
              71.23599915274252,
              1.935032215362499
            ],
            [
              -156.84924174048766,
              71.2361947984889,
              12.215032215362498
            ],
            [
              -156.8486896028639,
              71.23184712526705,
              12.215032215362498
            ],
            [
              -156.862139435509,
              71.23165152308792,
              1.935032215362499
            ]
          ]
        ]
      },
      "bbox": [
        -156.8626942,
        71.23165152,
        1.935032215,
        -156.8486896,
        71.2361948,
        12.21503222
      ],
      "properties": {
        "datetime": "2018-09-11T18:57:52Z",
        "pc:count": 3796066,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105065.4356,
            "count": 3796066,
            "maximum": -104826.3177,
            "minimum": -105321.8577,
            "name": "X",
            "position": 0,
            "stddev": 136.277887,
            "variance": 18571.66249
          },
          {
            "average": 2361965.424,
            "count": 3796066,
            "maximum": 2362204.697,
            "minimum": 2361730.837,
            "name": "Y",
            "position": 1,
            "stddev": 133.1608159,
            "variance": 17731.80288
          },
          {
            "average": 7.446681446,
            "count": 3796066,
            "maximum": 12.21503222,
            "minimum": 1.935032215,
            "name": "Z",
            "position": 2,
            "stddev": 2.149278114,
            "variance": 4.619396411
          },
          {
            "average": 48485.3657,
            "count": 3796066,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 7600.103585,
            "variance": 57761574.5
          },
          {
            "average": 1.000000263,
            "count": 3796066,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005132549218,
            "variance": 2.634306147e-07
          },
          {
            "average": 1.000000527,
            "count": 3796066,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007258519758,
            "variance": 5.268610907e-07
          },
          {
            "average": 0.5008345482,
            "count": 3796066,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999993694,
            "variance": 0.2499993694
          },
          {
            "average": 0.000564795238,
            "count": 3796066,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02375871194,
            "variance": 0.0005644763931
          },
          {
            "average": 1.24950936,
            "count": 3796066,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6885594899,
            "variance": 0.4741141712
          },
          {
            "average": -0.09074214907,
            "count": 3796066,
            "maximum": 20.65200043,
            "minimum": -19.88400078,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.05923801,
            "variance": 122.3067454
          },
          {
            "average": 0.4883323946,
            "count": 3796066,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998639143,
            "variance": 0.2498639328
          },
          {
            "average": 426.34923,
            "count": 3796066,
            "maximum": 468,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.50815718,
            "variance": 506.6171395
          },
          {
            "average": 220491397.7,
            "count": 3796066,
            "maximum": 220727472.3,
            "minimum": 220418225.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 130189.8787,
            "variance": 16949404520.0
          },
          {
            "average": 0.4883323946,
            "count": 3796066,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998639143,
            "variance": 0.2498639328
          },
          {
            "average": 0,
            "count": 3796066,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3796066,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3796066,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.247407711,
            "count": 3796066,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4315057179,
            "variance": 0.1861971846
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105321.8577,
          2361730.837,
          1.935032215,
          -104826.3177,
          2362204.697,
          12.21503222
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105321.85769193302,
                2361730.837210991,
                1.935032215362499
              ],
              [
                -105321.85769193302,
                2362204.6972109913,
                1.935032215362499
              ],
              [
                -104826.31769193301,
                2362204.6972109913,
                12.215032215362498
              ],
              [
                -104826.31769193301,
                2361730.837210991,
                12.215032215362498
              ],
              [
                -105321.85769193302,
                2361730.837210991,
                1.935032215362499
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:57:52+00:00",
        "end_time": "2018-09-08T05:03:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1452.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1452.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1452.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1452.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8626942,
            71.23165152,
            1.935032215,
            -156.8486896,
            71.2361948,
            12.21503222
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.862139435509,
                  71.23165152308792,
                  1.935032215362499
                ],
                [
                  -156.8626941735553,
                  71.23599915274252,
                  1.935032215362499
                ],
                [
                  -156.84924174048766,
                  71.2361947984889,
                  12.215032215362498
                ],
                [
                  -156.8486896028639,
                  71.23184712526705,
                  12.215032215362498
                ],
                [
                  -156.862139435509,
                  71.23165152308792,
                  1.935032215362499
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1452.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1452.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:57:52Z",
            "pc:count": 3796066,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105065.4356,
                "count": 3796066,
                "maximum": -104826.3177,
                "minimum": -105321.8577,
                "name": "X",
                "position": 0,
                "stddev": 136.277887,
                "variance": 18571.66249
              },
              {
                "average": 2361965.424,
                "count": 3796066,
                "maximum": 2362204.697,
                "minimum": 2361730.837,
                "name": "Y",
                "position": 1,
                "stddev": 133.1608159,
                "variance": 17731.80288
              },
              {
                "average": 7.446681446,
                "count": 3796066,
                "maximum": 12.21503222,
                "minimum": 1.935032215,
                "name": "Z",
                "position": 2,
                "stddev": 2.149278114,
                "variance": 4.619396411
              },
              {
                "average": 48485.3657,
                "count": 3796066,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 7600.103585,
                "variance": 57761574.5
              },
              {
                "average": 1.000000263,
                "count": 3796066,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005132549218,
                "variance": 2.634306147e-07
              },
              {
                "average": 1.000000527,
                "count": 3796066,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007258519758,
                "variance": 5.268610907e-07
              },
              {
                "average": 0.5008345482,
                "count": 3796066,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999993694,
                "variance": 0.2499993694
              },
              {
                "average": 0.000564795238,
                "count": 3796066,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02375871194,
                "variance": 0.0005644763931
              },
              {
                "average": 1.24950936,
                "count": 3796066,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6885594899,
                "variance": 0.4741141712
              },
              {
                "average": -0.09074214907,
                "count": 3796066,
                "maximum": 20.65200043,
                "minimum": -19.88400078,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.05923801,
                "variance": 122.3067454
              },
              {
                "average": 0.4883323946,
                "count": 3796066,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998639143,
                "variance": 0.2498639328
              },
              {
                "average": 426.34923,
                "count": 3796066,
                "maximum": 468,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.50815718,
                "variance": 506.6171395
              },
              {
                "average": 220491397.7,
                "count": 3796066,
                "maximum": 220727472.3,
                "minimum": 220418225.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 130189.8787,
                "variance": 16949404520.0
              },
              {
                "average": 0.4883323946,
                "count": 3796066,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998639143,
                "variance": 0.2498639328
              },
              {
                "average": 0,
                "count": 3796066,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3796066,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3796066,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.247407711,
                "count": 3796066,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4315057179,
                "variance": 0.1861971846
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105321.8577,
              2361730.837,
              1.935032215,
              -104826.3177,
              2362204.697,
              12.21503222
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105321.85769193302,
                    2361730.837210991,
                    1.935032215362499
                  ],
                  [
                    -105321.85769193302,
                    2362204.6972109913,
                    1.935032215362499
                  ],
                  [
                    -104826.31769193301,
                    2362204.6972109913,
                    12.215032215362498
                  ],
                  [
                    -104826.31769193301,
                    2361730.837210991,
                    12.215032215362498
                  ],
                  [
                    -105321.85769193302,
                    2361730.837210991,
                    1.935032215362499
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:57:52+00:00",
            "end_time": "2018-09-08T05:03:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0334.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.43126807802193,
              70.48424018539252,
              20.160020143279365
            ],
            [
              -157.43191410882537,
              70.48858304029638,
              20.160020143279365
            ],
            [
              -157.41897341842375,
              70.48881528511104,
              42.62002014327936
            ],
            [
              -157.4183298149749,
              70.48447238068789,
              42.62002014327936
            ],
            [
              -157.43126807802193,
              70.48424018539252,
              20.160020143279365
            ]
          ]
        ]
      },
      "bbox": [
        -157.4319141,
        70.48424019,
        20.16002014,
        -157.4183298,
        70.48881529,
        42.62002014
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:07Z",
        "pc:count": 5803668,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130232.8518,
            "count": 5803668,
            "maximum": -129968.1601,
            "minimum": -130460.9601,
            "name": "X",
            "position": 0,
            "stddev": 128.4395693,
            "variance": 16496.72296
          },
          {
            "average": 2281481.335,
            "count": 5803668,
            "maximum": 2281725.76,
            "minimum": 2281250.02,
            "name": "Y",
            "position": 1,
            "stddev": 121.6309928,
            "variance": 14794.0984
          },
          {
            "average": 26.79667947,
            "count": 5803668,
            "maximum": 42.62002014,
            "minimum": 20.16002014,
            "name": "Z",
            "position": 2,
            "stddev": 1.653744814,
            "variance": 2.734871911
          },
          {
            "average": 42097.72703,
            "count": 5803668,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11566.47077,
            "variance": 133783246.1
          },
          {
            "average": 1.004132214,
            "count": 5803668,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06695400205,
            "variance": 0.004482838391
          },
          {
            "average": 1.008253401,
            "count": 5803668,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09636372408,
            "variance": 0.009285967318
          },
          {
            "average": 0.5072898725,
            "count": 5803668,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499946898,
            "variance": 0.2499469008
          },
          {
            "average": 0.0002794784264,
            "count": 5803668,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01671527345,
            "variance": 0.0002794003664
          },
          {
            "average": 1.624245219,
            "count": 5803668,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.704084034,
            "variance": 2.903902396
          },
          {
            "average": -3.553974492,
            "count": 5803668,
            "maximum": 16.32600021,
            "minimum": -19.76399994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.694424662,
            "variance": 93.98186953
          },
          {
            "average": 0.48904417,
            "count": 5803668,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998799984,
            "variance": 0.2498800128
          },
          {
            "average": 660.868026,
            "count": 5803668,
            "maximum": 708,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.46743827,
            "variance": 378.9811527
          },
          {
            "average": 222295272.2,
            "count": 5803668,
            "maximum": 222298827.3,
            "minimum": 222294129.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1566.366191,
            "variance": 2453503.045
          },
          {
            "average": 0.48904417,
            "count": 5803668,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998799984,
            "variance": 0.2498800128
          },
          {
            "average": 0,
            "count": 5803668,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5803668,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5803668,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1805544356,
            "count": 5803668,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3846486148,
            "variance": 0.1479545569
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130460.9601,
          2281250.02,
          20.16002014,
          -129968.1601,
          2281725.76,
          42.62002014
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130460.96008435087,
                2281250.01976947,
                20.160020143279365
              ],
              [
                -130460.96008435087,
                2281725.7597694704,
                20.160020143279365
              ],
              [
                -129968.16008435088,
                2281725.7597694704,
                42.62002014327936
              ],
              [
                -129968.16008435088,
                2281250.01976947,
                42.62002014327936
              ],
              [
                -130460.96008435087,
                2281250.01976947,
                20.160020143279365
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:07+00:00",
        "end_time": "2018-09-29T22:08:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0334.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0334.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0334.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0334.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4319141,
            70.48424019,
            20.16002014,
            -157.4183298,
            70.48881529,
            42.62002014
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.43126807802193,
                  70.48424018539252,
                  20.160020143279365
                ],
                [
                  -157.43191410882537,
                  70.48858304029638,
                  20.160020143279365
                ],
                [
                  -157.41897341842375,
                  70.48881528511104,
                  42.62002014327936
                ],
                [
                  -157.4183298149749,
                  70.48447238068789,
                  42.62002014327936
                ],
                [
                  -157.43126807802193,
                  70.48424018539252,
                  20.160020143279365
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0334.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0334.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:07Z",
            "pc:count": 5803668,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130232.8518,
                "count": 5803668,
                "maximum": -129968.1601,
                "minimum": -130460.9601,
                "name": "X",
                "position": 0,
                "stddev": 128.4395693,
                "variance": 16496.72296
              },
              {
                "average": 2281481.335,
                "count": 5803668,
                "maximum": 2281725.76,
                "minimum": 2281250.02,
                "name": "Y",
                "position": 1,
                "stddev": 121.6309928,
                "variance": 14794.0984
              },
              {
                "average": 26.79667947,
                "count": 5803668,
                "maximum": 42.62002014,
                "minimum": 20.16002014,
                "name": "Z",
                "position": 2,
                "stddev": 1.653744814,
                "variance": 2.734871911
              },
              {
                "average": 42097.72703,
                "count": 5803668,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11566.47077,
                "variance": 133783246.1
              },
              {
                "average": 1.004132214,
                "count": 5803668,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06695400205,
                "variance": 0.004482838391
              },
              {
                "average": 1.008253401,
                "count": 5803668,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09636372408,
                "variance": 0.009285967318
              },
              {
                "average": 0.5072898725,
                "count": 5803668,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499946898,
                "variance": 0.2499469008
              },
              {
                "average": 0.0002794784264,
                "count": 5803668,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01671527345,
                "variance": 0.0002794003664
              },
              {
                "average": 1.624245219,
                "count": 5803668,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.704084034,
                "variance": 2.903902396
              },
              {
                "average": -3.553974492,
                "count": 5803668,
                "maximum": 16.32600021,
                "minimum": -19.76399994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.694424662,
                "variance": 93.98186953
              },
              {
                "average": 0.48904417,
                "count": 5803668,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998799984,
                "variance": 0.2498800128
              },
              {
                "average": 660.868026,
                "count": 5803668,
                "maximum": 708,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.46743827,
                "variance": 378.9811527
              },
              {
                "average": 222295272.2,
                "count": 5803668,
                "maximum": 222298827.3,
                "minimum": 222294129.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1566.366191,
                "variance": 2453503.045
              },
              {
                "average": 0.48904417,
                "count": 5803668,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998799984,
                "variance": 0.2498800128
              },
              {
                "average": 0,
                "count": 5803668,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5803668,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5803668,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1805544356,
                "count": 5803668,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3846486148,
                "variance": 0.1479545569
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130460.9601,
              2281250.02,
              20.16002014,
              -129968.1601,
              2281725.76,
              42.62002014
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130460.96008435087,
                    2281250.01976947,
                    20.160020143279365
                  ],
                  [
                    -130460.96008435087,
                    2281725.7597694704,
                    20.160020143279365
                  ],
                  [
                    -129968.16008435088,
                    2281725.7597694704,
                    42.62002014327936
                  ],
                  [
                    -129968.16008435088,
                    2281250.01976947,
                    42.62002014327936
                  ],
                  [
                    -130460.96008435087,
                    2281250.01976947,
                    20.160020143279365
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:07+00:00",
            "end_time": "2018-09-29T22:08:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0291.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.39473830139428,
              70.47592562976965,
              16.778518026967916
            ],
            [
              -157.395377122911,
              70.48026766835734,
              16.778518026967916
            ],
            [
              -157.3824417771716,
              70.48049740859997,
              74.21851802696791
            ],
            [
              -157.38180538093178,
              70.47615532105888,
              74.21851802696791
            ],
            [
              -157.39473830139428,
              70.47592562976965,
              16.778518026967916
            ]
          ]
        ]
      },
      "bbox": [
        -157.3953771,
        70.47592563,
        16.77851803,
        -157.3818054,
        70.48049741,
        74.21851803
      ],
      "properties": {
        "datetime": "2018-09-29T23:41:28Z",
        "pc:count": 4809983,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -128867.625,
            "count": 4809983,
            "maximum": -128626.9881,
            "minimum": -129119.7481,
            "name": "X",
            "position": 0,
            "stddev": 139.7677038,
            "variance": 19535.01101
          },
          {
            "average": 2280501.878,
            "count": 4809983,
            "maximum": 2280745.849,
            "minimum": 2280270.189,
            "name": "Y",
            "position": 1,
            "stddev": 127.2776466,
            "variance": 16199.59933
          },
          {
            "average": 18.19081508,
            "count": 4809983,
            "maximum": 74.21851803,
            "minimum": 16.77851803,
            "name": "Z",
            "position": 2,
            "stddev": 0.4510666417,
            "variance": 0.2034611153
          },
          {
            "average": 42502.92955,
            "count": 4809983,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 14603.2266,
            "variance": 213254227.1
          },
          {
            "average": 1.000000208,
            "count": 4809983,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004559615583,
            "variance": 2.079009427e-07
          },
          {
            "average": 1.000000416,
            "count": 4809983,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006448269527,
            "variance": 4.158017989e-07
          },
          {
            "average": 0.501357905,
            "count": 4809983,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999982081,
            "variance": 0.2499982081
          },
          {
            "average": 0.0003615397393,
            "count": 4809983,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01901076283,
            "variance": 0.0003614091035
          },
          {
            "average": 1.237627451,
            "count": 4809983,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4281791758,
            "variance": 0.1833374066
          },
          {
            "average": 0.3359191329,
            "count": 4809983,
            "maximum": 20.48999977,
            "minimum": -19.81800079,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62755146,
            "variance": 112.94485
          },
          {
            "average": 0.5038579138,
            "count": 4809983,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999851683,
            "variance": 0.2499851685
          },
          {
            "average": 663.1630297,
            "count": 4809983,
            "maximum": 711,
            "minimum": 652,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.57258475,
            "variance": 423.2312435
          },
          {
            "average": 222295591.6,
            "count": 4809983,
            "maximum": 222299688.9,
            "minimum": 222294525.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1665.1038,
            "variance": 2772570.665
          },
          {
            "average": 0.5038579138,
            "count": 4809983,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999851683,
            "variance": 0.2499851685
          },
          {
            "average": 0,
            "count": 4809983,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4809983,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4809983,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2505243782,
            "count": 4809983,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4333150738,
            "variance": 0.1877619531
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129119.7481,
          2280270.189,
          16.77851803,
          -128626.9881,
          2280745.849,
          74.21851803
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129119.74811452135,
                2280270.189408824,
                16.778518026967916
              ],
              [
                -129119.74811452135,
                2280745.849408824,
                16.778518026967916
              ],
              [
                -128626.98811452134,
                2280745.849408824,
                74.21851802696791
              ],
              [
                -128626.98811452134,
                2280270.189408824,
                74.21851802696791
              ],
              [
                -129119.74811452135,
                2280270.189408824,
                16.778518026967916
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:41:28+00:00",
        "end_time": "2018-09-29T22:15:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0291.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0291.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0291.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0291.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.3953771,
            70.47592563,
            16.77851803,
            -157.3818054,
            70.48049741,
            74.21851803
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.39473830139428,
                  70.47592562976965,
                  16.778518026967916
                ],
                [
                  -157.395377122911,
                  70.48026766835734,
                  16.778518026967916
                ],
                [
                  -157.3824417771716,
                  70.48049740859997,
                  74.21851802696791
                ],
                [
                  -157.38180538093178,
                  70.47615532105888,
                  74.21851802696791
                ],
                [
                  -157.39473830139428,
                  70.47592562976965,
                  16.778518026967916
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0291.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0291.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:41:28Z",
            "pc:count": 4809983,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -128867.625,
                "count": 4809983,
                "maximum": -128626.9881,
                "minimum": -129119.7481,
                "name": "X",
                "position": 0,
                "stddev": 139.7677038,
                "variance": 19535.01101
              },
              {
                "average": 2280501.878,
                "count": 4809983,
                "maximum": 2280745.849,
                "minimum": 2280270.189,
                "name": "Y",
                "position": 1,
                "stddev": 127.2776466,
                "variance": 16199.59933
              },
              {
                "average": 18.19081508,
                "count": 4809983,
                "maximum": 74.21851803,
                "minimum": 16.77851803,
                "name": "Z",
                "position": 2,
                "stddev": 0.4510666417,
                "variance": 0.2034611153
              },
              {
                "average": 42502.92955,
                "count": 4809983,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 14603.2266,
                "variance": 213254227.1
              },
              {
                "average": 1.000000208,
                "count": 4809983,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004559615583,
                "variance": 2.079009427e-07
              },
              {
                "average": 1.000000416,
                "count": 4809983,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006448269527,
                "variance": 4.158017989e-07
              },
              {
                "average": 0.501357905,
                "count": 4809983,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999982081,
                "variance": 0.2499982081
              },
              {
                "average": 0.0003615397393,
                "count": 4809983,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01901076283,
                "variance": 0.0003614091035
              },
              {
                "average": 1.237627451,
                "count": 4809983,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4281791758,
                "variance": 0.1833374066
              },
              {
                "average": 0.3359191329,
                "count": 4809983,
                "maximum": 20.48999977,
                "minimum": -19.81800079,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62755146,
                "variance": 112.94485
              },
              {
                "average": 0.5038579138,
                "count": 4809983,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999851683,
                "variance": 0.2499851685
              },
              {
                "average": 663.1630297,
                "count": 4809983,
                "maximum": 711,
                "minimum": 652,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.57258475,
                "variance": 423.2312435
              },
              {
                "average": 222295591.6,
                "count": 4809983,
                "maximum": 222299688.9,
                "minimum": 222294525.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1665.1038,
                "variance": 2772570.665
              },
              {
                "average": 0.5038579138,
                "count": 4809983,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999851683,
                "variance": 0.2499851685
              },
              {
                "average": 0,
                "count": 4809983,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4809983,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4809983,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2505243782,
                "count": 4809983,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4333150738,
                "variance": 0.1877619531
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129119.7481,
              2280270.189,
              16.77851803,
              -128626.9881,
              2280745.849,
              74.21851803
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129119.74811452135,
                    2280270.189408824,
                    16.778518026967916
                  ],
                  [
                    -129119.74811452135,
                    2280745.849408824,
                    16.778518026967916
                  ],
                  [
                    -128626.98811452134,
                    2280745.849408824,
                    74.21851802696791
                  ],
                  [
                    -128626.98811452134,
                    2280270.189408824,
                    74.21851802696791
                  ],
                  [
                    -129119.74811452135,
                    2280270.189408824,
                    16.778518026967916
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:41:28+00:00",
            "end_time": "2018-09-29T22:15:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1508.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84917109198943,
              71.2356708303124,
              1.954165002368695
            ],
            [
              -156.84972306722844,
              71.24001586060311,
              1.954165002368695
            ],
            [
              -156.83626919991852,
              71.24021060777471,
              9.554165002368695
            ],
            [
              -156.83571982426372,
              71.23586553413276,
              9.554165002368695
            ],
            [
              -156.84917109198943,
              71.2356708303124,
              1.954165002368695
            ]
          ]
        ]
      },
      "bbox": [
        -156.8497231,
        71.23567083,
        1.954165002,
        -156.8357198,
        71.24021061,
        9.554165002
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:38Z",
        "pc:count": 3957673,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104568.4952,
            "count": 3957673,
            "maximum": -104330.6671,
            "minimum": -104826.1671,
            "name": "X",
            "position": 0,
            "stddev": 130.2700769,
            "variance": 16970.29293
          },
          {
            "average": 2362372.193,
            "count": 3957673,
            "maximum": 2362621.143,
            "minimum": 2362147.583,
            "name": "Y",
            "position": 1,
            "stddev": 124.8279075,
            "variance": 15582.0065
          },
          {
            "average": 6.499663974,
            "count": 3957673,
            "maximum": 9.554165002,
            "minimum": 1.954165002,
            "name": "Z",
            "position": 2,
            "stddev": 1.853685549,
            "variance": 3.436150114
          },
          {
            "average": 48836.57235,
            "count": 3957673,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 8090.799401,
            "variance": 65461034.95
          },
          {
            "average": 1,
            "count": 3957673,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3957673,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5051870127,
            "count": 3957673,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999731573,
            "variance": 0.2499731581
          },
          {
            "average": 0.0004669410535,
            "count": 3957673,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.021603776,
            "variance": 0.0004667231375
          },
          {
            "average": 1.333946488,
            "count": 3957673,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.007140875,
            "variance": 1.014332742
          },
          {
            "average": -2.562603553,
            "count": 3957673,
            "maximum": 16.45199966,
            "minimum": -19.68000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50173542,
            "variance": 110.2864468
          },
          {
            "average": 0.4820501845,
            "count": 3957673,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996777634,
            "variance": 0.2496778672
          },
          {
            "average": 425.6110871,
            "count": 3957673,
            "maximum": 467,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.91793642,
            "variance": 480.3959371
          },
          {
            "average": 220488168.3,
            "count": 3957673,
            "maximum": 220727278,
            "minimum": 220418236.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128053.7921,
            "variance": 16397773680.0
          },
          {
            "average": 0.4820501845,
            "count": 3957673,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996777634,
            "variance": 0.2496778672
          },
          {
            "average": 0,
            "count": 3957673,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3957673,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3957673,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1987187926,
            "count": 3957673,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3990359311,
            "variance": 0.1592296743
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104826.1671,
          2362147.583,
          1.954165002,
          -104330.6671,
          2362621.143,
          9.554165002
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104826.16708230978,
                2362147.58331894,
                1.954165002368695
              ],
              [
                -104826.16708230978,
                2362621.1433189395,
                1.954165002368695
              ],
              [
                -104330.66708230978,
                2362621.1433189395,
                9.554165002368695
              ],
              [
                -104330.66708230978,
                2362147.58331894,
                9.554165002368695
              ],
              [
                -104826.16708230978,
                2362147.58331894,
                1.954165002368695
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:38+00:00",
        "end_time": "2018-09-08T05:03:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1508.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1508.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1508.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1508.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8497231,
            71.23567083,
            1.954165002,
            -156.8357198,
            71.24021061,
            9.554165002
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84917109198943,
                  71.2356708303124,
                  1.954165002368695
                ],
                [
                  -156.84972306722844,
                  71.24001586060311,
                  1.954165002368695
                ],
                [
                  -156.83626919991852,
                  71.24021060777471,
                  9.554165002368695
                ],
                [
                  -156.83571982426372,
                  71.23586553413276,
                  9.554165002368695
                ],
                [
                  -156.84917109198943,
                  71.2356708303124,
                  1.954165002368695
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1508.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1508.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:38Z",
            "pc:count": 3957673,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104568.4952,
                "count": 3957673,
                "maximum": -104330.6671,
                "minimum": -104826.1671,
                "name": "X",
                "position": 0,
                "stddev": 130.2700769,
                "variance": 16970.29293
              },
              {
                "average": 2362372.193,
                "count": 3957673,
                "maximum": 2362621.143,
                "minimum": 2362147.583,
                "name": "Y",
                "position": 1,
                "stddev": 124.8279075,
                "variance": 15582.0065
              },
              {
                "average": 6.499663974,
                "count": 3957673,
                "maximum": 9.554165002,
                "minimum": 1.954165002,
                "name": "Z",
                "position": 2,
                "stddev": 1.853685549,
                "variance": 3.436150114
              },
              {
                "average": 48836.57235,
                "count": 3957673,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 8090.799401,
                "variance": 65461034.95
              },
              {
                "average": 1,
                "count": 3957673,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3957673,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5051870127,
                "count": 3957673,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999731573,
                "variance": 0.2499731581
              },
              {
                "average": 0.0004669410535,
                "count": 3957673,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.021603776,
                "variance": 0.0004667231375
              },
              {
                "average": 1.333946488,
                "count": 3957673,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.007140875,
                "variance": 1.014332742
              },
              {
                "average": -2.562603553,
                "count": 3957673,
                "maximum": 16.45199966,
                "minimum": -19.68000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50173542,
                "variance": 110.2864468
              },
              {
                "average": 0.4820501845,
                "count": 3957673,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996777634,
                "variance": 0.2496778672
              },
              {
                "average": 425.6110871,
                "count": 3957673,
                "maximum": 467,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.91793642,
                "variance": 480.3959371
              },
              {
                "average": 220488168.3,
                "count": 3957673,
                "maximum": 220727278,
                "minimum": 220418236.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128053.7921,
                "variance": 16397773680.0
              },
              {
                "average": 0.4820501845,
                "count": 3957673,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996777634,
                "variance": 0.2496778672
              },
              {
                "average": 0,
                "count": 3957673,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3957673,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3957673,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1987187926,
                "count": 3957673,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3990359311,
                "variance": 0.1592296743
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104826.1671,
              2362147.583,
              1.954165002,
              -104330.6671,
              2362621.143,
              9.554165002
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104826.16708230978,
                    2362147.58331894,
                    1.954165002368695
                  ],
                  [
                    -104826.16708230978,
                    2362621.1433189395,
                    1.954165002368695
                  ],
                  [
                    -104330.66708230978,
                    2362621.1433189395,
                    9.554165002368695
                  ],
                  [
                    -104330.66708230978,
                    2362147.58331894,
                    9.554165002368695
                  ],
                  [
                    -104826.16708230978,
                    2362147.58331894,
                    1.954165002368695
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:38+00:00",
            "end_time": "2018-09-08T05:03:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1513.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7855319018084,
              71.23527084651761,
              9.447725869049222
            ],
            [
              -156.786071819352,
              71.23961824415288,
              9.447725869049222
            ],
            [
              -156.7726154733137,
              71.23980866389098,
              40.76772586904922
            ],
            [
              -156.77207815742184,
              71.23546122384568,
              40.76772586904922
            ],
            [
              -156.7855319018084,
              71.23527084651761,
              9.447725869049222
            ]
          ]
        ]
      },
      "bbox": [
        -156.7860718,
        71.23527085,
        9.447725869,
        -156.7720782,
        71.23980866,
        40.76772587
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:04Z",
        "pc:count": 1990991,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102245.3552,
            "count": 1990991,
            "maximum": -101992.4012,
            "minimum": -102487.9812,
            "name": "X",
            "position": 0,
            "stddev": 137.2350402,
            "variance": 18833.45625
          },
          {
            "average": 2362250.584,
            "count": 1990991,
            "maximum": 2362478.538,
            "minimum": 2362004.738,
            "name": "Y",
            "position": 1,
            "stddev": 127.1297236,
            "variance": 16161.96662
          },
          {
            "average": 9.673494715,
            "count": 1990991,
            "maximum": 40.76772587,
            "minimum": 9.447725869,
            "name": "Z",
            "position": 2,
            "stddev": 0.07939426848,
            "variance": 0.006303449868
          },
          {
            "average": 20133.08319,
            "count": 1990991,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 16095.09655,
            "variance": 259052132.9
          },
          {
            "average": 1,
            "count": 1990991,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1990991,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5061368936,
            "count": 1990991,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999624627,
            "variance": 0.2499624641
          },
          {
            "average": 0.0007096968294,
            "count": 1990991,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02663068749,
            "variance": 0.000709193516
          },
          {
            "average": 8.295869243,
            "count": 1990991,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.856484811,
            "variance": 3.446535853
          },
          {
            "average": -2.123246121,
            "count": 1990991,
            "maximum": 16.4279995,
            "minimum": -19.59000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.046304671,
            "variance": 49.65040951
          },
          {
            "average": 0.4880579571,
            "count": 1990991,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998574928,
            "variance": 0.2498575131
          },
          {
            "average": 431.2174053,
            "count": 1990991,
            "maximum": 467,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.53229224,
            "variance": 463.6396093
          },
          {
            "average": 220505180.5,
            "count": 1990991,
            "maximum": 220727244.5,
            "minimum": 220420440,
            "name": "GpsTime",
            "position": 12,
            "stddev": 136036.9238,
            "variance": 18506044630.0
          },
          {
            "average": 0.4880579571,
            "count": 1990991,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998574928,
            "variance": 0.2498575131
          },
          {
            "average": 0,
            "count": 1990991,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1990991,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1990991,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01646667413,
            "count": 1990991,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1272616632,
            "variance": 0.01619553091
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102487.9812,
          2362004.738,
          9.447725869,
          -101992.4012,
          2362478.538,
          40.76772587
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102487.98118552138,
                2362004.7375005926,
                9.447725869049222
              ],
              [
                -102487.98118552138,
                2362478.5375005924,
                9.447725869049222
              ],
              [
                -101992.40118552139,
                2362478.5375005924,
                40.76772586904922
              ],
              [
                -101992.40118552139,
                2362004.7375005926,
                40.76772586904922
              ],
              [
                -102487.98118552138,
                2362004.7375005926,
                9.447725869049222
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:04+00:00",
        "end_time": "2018-09-08T05:40:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1513.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1513.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1513.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1513.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7860718,
            71.23527085,
            9.447725869,
            -156.7720782,
            71.23980866,
            40.76772587
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7855319018084,
                  71.23527084651761,
                  9.447725869049222
                ],
                [
                  -156.786071819352,
                  71.23961824415288,
                  9.447725869049222
                ],
                [
                  -156.7726154733137,
                  71.23980866389098,
                  40.76772586904922
                ],
                [
                  -156.77207815742184,
                  71.23546122384568,
                  40.76772586904922
                ],
                [
                  -156.7855319018084,
                  71.23527084651761,
                  9.447725869049222
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1513.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1513.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:04Z",
            "pc:count": 1990991,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102245.3552,
                "count": 1990991,
                "maximum": -101992.4012,
                "minimum": -102487.9812,
                "name": "X",
                "position": 0,
                "stddev": 137.2350402,
                "variance": 18833.45625
              },
              {
                "average": 2362250.584,
                "count": 1990991,
                "maximum": 2362478.538,
                "minimum": 2362004.738,
                "name": "Y",
                "position": 1,
                "stddev": 127.1297236,
                "variance": 16161.96662
              },
              {
                "average": 9.673494715,
                "count": 1990991,
                "maximum": 40.76772587,
                "minimum": 9.447725869,
                "name": "Z",
                "position": 2,
                "stddev": 0.07939426848,
                "variance": 0.006303449868
              },
              {
                "average": 20133.08319,
                "count": 1990991,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 16095.09655,
                "variance": 259052132.9
              },
              {
                "average": 1,
                "count": 1990991,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1990991,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5061368936,
                "count": 1990991,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999624627,
                "variance": 0.2499624641
              },
              {
                "average": 0.0007096968294,
                "count": 1990991,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02663068749,
                "variance": 0.000709193516
              },
              {
                "average": 8.295869243,
                "count": 1990991,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.856484811,
                "variance": 3.446535853
              },
              {
                "average": -2.123246121,
                "count": 1990991,
                "maximum": 16.4279995,
                "minimum": -19.59000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.046304671,
                "variance": 49.65040951
              },
              {
                "average": 0.4880579571,
                "count": 1990991,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998574928,
                "variance": 0.2498575131
              },
              {
                "average": 431.2174053,
                "count": 1990991,
                "maximum": 467,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.53229224,
                "variance": 463.6396093
              },
              {
                "average": 220505180.5,
                "count": 1990991,
                "maximum": 220727244.5,
                "minimum": 220420440,
                "name": "GpsTime",
                "position": 12,
                "stddev": 136036.9238,
                "variance": 18506044630.0
              },
              {
                "average": 0.4880579571,
                "count": 1990991,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998574928,
                "variance": 0.2498575131
              },
              {
                "average": 0,
                "count": 1990991,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1990991,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1990991,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01646667413,
                "count": 1990991,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1272616632,
                "variance": 0.01619553091
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102487.9812,
              2362004.738,
              9.447725869,
              -101992.4012,
              2362478.538,
              40.76772587
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102487.98118552138,
                    2362004.7375005926,
                    9.447725869049222
                  ],
                  [
                    -102487.98118552138,
                    2362478.5375005924,
                    9.447725869049222
                  ],
                  [
                    -101992.40118552139,
                    2362478.5375005924,
                    40.76772586904922
                  ],
                  [
                    -101992.40118552139,
                    2362004.7375005926,
                    40.76772586904922
                  ],
                  [
                    -102487.98118552138,
                    2362004.7375005926,
                    9.447725869049222
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:04+00:00",
            "end_time": "2018-09-08T05:40:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0242.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4317271740649,
              70.46784846953108,
              27.689317101993396
            ],
            [
              -157.43237277848408,
              70.47219054620925,
              27.689317101993396
            ],
            [
              -157.4194433742484,
              70.47242276275021,
              44.06931710199339
            ],
            [
              -157.4188001931399,
              70.46808063661281,
              44.06931710199339
            ],
            [
              -157.4317271740649,
              70.46784846953108,
              27.689317101993396
            ]
          ]
        ]
      },
      "bbox": [
        -157.4323728,
        70.46784847,
        27.6893171,
        -157.4188002,
        70.47242276,
        44.0693171
      ],
      "properties": {
        "datetime": "2018-09-29T23:27:32Z",
        "pc:count": 6229047,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -130346.2349,
            "count": 6229047,
            "maximum": -130078.3083,
            "minimum": -130571.0283,
            "name": "X",
            "position": 0,
            "stddev": 130.6685809,
            "variance": 17074.27804
          },
          {
            "average": 2279699.166,
            "count": 6229047,
            "maximum": 2279935.667,
            "minimum": 2279459.967,
            "name": "Y",
            "position": 1,
            "stddev": 130.8718567,
            "variance": 17127.44287
          },
          {
            "average": 29.33629593,
            "count": 6229047,
            "maximum": 44.0693171,
            "minimum": 27.6893171,
            "name": "Z",
            "position": 2,
            "stddev": 1.032066799,
            "variance": 1.065161878
          },
          {
            "average": 41719.9551,
            "count": 6229047,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11538.18742,
            "variance": 133129768.9
          },
          {
            "average": 1.001591415,
            "count": 6229047,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04025753854,
            "variance": 0.001620669409
          },
          {
            "average": 1.003186041,
            "count": 6229047,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05719484678,
            "variance": 0.003271250498
          },
          {
            "average": 0.5051512695,
            "count": 6229047,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999735039,
            "variance": 0.2499735046
          },
          {
            "average": 0.0002811023901,
            "count": 6229047,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01676375306,
            "variance": 0.0002810234167
          },
          {
            "average": 1.225257411,
            "count": 6229047,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4424414774,
            "variance": 0.1957544609
          },
          {
            "average": -2.947920306,
            "count": 6229047,
            "maximum": 16.4279995,
            "minimum": -19.66799927,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50532961,
            "variance": 110.3619501
          },
          {
            "average": 0.4832747289,
            "count": 6229047,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997202271,
            "variance": 0.2497203054
          },
          {
            "average": 665.0035559,
            "count": 6229047,
            "maximum": 708,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.29477496,
            "variance": 299.109241
          },
          {
            "average": 222295996.3,
            "count": 6229047,
            "maximum": 222298852.7,
            "minimum": 222295187.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1137.806144,
            "variance": 1294602.821
          },
          {
            "average": 0.4832747289,
            "count": 6229047,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997202271,
            "variance": 0.2497203054
          },
          {
            "average": 0,
            "count": 6229047,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6229047,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6229047,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2088903808,
            "count": 6229047,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4065159482,
            "variance": 0.1652552162
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130571.0283,
          2279459.967,
          27.6893171,
          -130078.3083,
          2279935.667,
          44.0693171
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130571.02826633934,
                2279459.96666868,
                27.689317101993396
              ],
              [
                -130571.02826633934,
                2279935.66666868,
                27.689317101993396
              ],
              [
                -130078.30826633934,
                2279935.66666868,
                44.06931710199339
              ],
              [
                -130078.30826633934,
                2279459.96666868,
                44.06931710199339
              ],
              [
                -130571.02826633934,
                2279459.96666868,
                27.689317101993396
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:27:32+00:00",
        "end_time": "2018-09-29T22:26:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0242.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0242.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0242.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0242.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4323728,
            70.46784847,
            27.6893171,
            -157.4188002,
            70.47242276,
            44.0693171
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4317271740649,
                  70.46784846953108,
                  27.689317101993396
                ],
                [
                  -157.43237277848408,
                  70.47219054620925,
                  27.689317101993396
                ],
                [
                  -157.4194433742484,
                  70.47242276275021,
                  44.06931710199339
                ],
                [
                  -157.4188001931399,
                  70.46808063661281,
                  44.06931710199339
                ],
                [
                  -157.4317271740649,
                  70.46784846953108,
                  27.689317101993396
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0242.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0242.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:27:32Z",
            "pc:count": 6229047,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -130346.2349,
                "count": 6229047,
                "maximum": -130078.3083,
                "minimum": -130571.0283,
                "name": "X",
                "position": 0,
                "stddev": 130.6685809,
                "variance": 17074.27804
              },
              {
                "average": 2279699.166,
                "count": 6229047,
                "maximum": 2279935.667,
                "minimum": 2279459.967,
                "name": "Y",
                "position": 1,
                "stddev": 130.8718567,
                "variance": 17127.44287
              },
              {
                "average": 29.33629593,
                "count": 6229047,
                "maximum": 44.0693171,
                "minimum": 27.6893171,
                "name": "Z",
                "position": 2,
                "stddev": 1.032066799,
                "variance": 1.065161878
              },
              {
                "average": 41719.9551,
                "count": 6229047,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11538.18742,
                "variance": 133129768.9
              },
              {
                "average": 1.001591415,
                "count": 6229047,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04025753854,
                "variance": 0.001620669409
              },
              {
                "average": 1.003186041,
                "count": 6229047,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05719484678,
                "variance": 0.003271250498
              },
              {
                "average": 0.5051512695,
                "count": 6229047,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999735039,
                "variance": 0.2499735046
              },
              {
                "average": 0.0002811023901,
                "count": 6229047,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01676375306,
                "variance": 0.0002810234167
              },
              {
                "average": 1.225257411,
                "count": 6229047,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4424414774,
                "variance": 0.1957544609
              },
              {
                "average": -2.947920306,
                "count": 6229047,
                "maximum": 16.4279995,
                "minimum": -19.66799927,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50532961,
                "variance": 110.3619501
              },
              {
                "average": 0.4832747289,
                "count": 6229047,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997202271,
                "variance": 0.2497203054
              },
              {
                "average": 665.0035559,
                "count": 6229047,
                "maximum": 708,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.29477496,
                "variance": 299.109241
              },
              {
                "average": 222295996.3,
                "count": 6229047,
                "maximum": 222298852.7,
                "minimum": 222295187.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1137.806144,
                "variance": 1294602.821
              },
              {
                "average": 0.4832747289,
                "count": 6229047,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997202271,
                "variance": 0.2497203054
              },
              {
                "average": 0,
                "count": 6229047,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6229047,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6229047,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2088903808,
                "count": 6229047,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4065159482,
                "variance": 0.1652552162
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130571.0283,
              2279459.967,
              27.6893171,
              -130078.3083,
              2279935.667,
              44.0693171
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130571.02826633934,
                    2279459.96666868,
                    27.689317101993396
                  ],
                  [
                    -130571.02826633934,
                    2279935.66666868,
                    27.689317101993396
                  ],
                  [
                    -130078.30826633934,
                    2279935.66666868,
                    44.06931710199339
                  ],
                  [
                    -130078.30826633934,
                    2279459.96666868,
                    44.06931710199339
                  ],
                  [
                    -130571.02826633934,
                    2279459.96666868,
                    27.689317101993396
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:27:32+00:00",
            "end_time": "2018-09-29T22:26:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1453.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84941361378475,
              71.23157419793469,
              2.011572128862446
            ],
            [
              -156.84996581499377,
              71.23592131069154,
              2.011572128862446
            ],
            [
              -156.83651711877494,
              71.2361160300245,
              10.491572128862447
            ],
            [
              -156.8359675169922,
              71.23176887391206,
              10.491572128862447
            ],
            [
              -156.84941361378475,
              71.23157419793469,
              2.011572128862446
            ]
          ]
        ]
      },
      "bbox": [
        -156.8499658,
        71.2315742,
        2.011572129,
        -156.8359675,
        71.23611603,
        10.49157213
      ],
      "properties": {
        "datetime": "2018-09-11T18:57:58Z",
        "pc:count": 4475125,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104606.8847,
            "count": 4475125,
            "maximum": -104358.8183,
            "minimum": -104854.2183,
            "name": "X",
            "position": 0,
            "stddev": 133.8635556,
            "variance": 17919.45151
          },
          {
            "average": 2361936.985,
            "count": 4475125,
            "maximum": 2362176.088,
            "minimum": 2361702.288,
            "name": "Y",
            "position": 1,
            "stddev": 130.6871913,
            "variance": 17079.14196
          },
          {
            "average": 8.264472137,
            "count": 4475125,
            "maximum": 10.49157213,
            "minimum": 2.011572129,
            "name": "Z",
            "position": 2,
            "stddev": 1.905091463,
            "variance": 3.629373484
          },
          {
            "average": 47596.55382,
            "count": 4475125,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7390.698788,
            "variance": 54622428.58
          },
          {
            "average": 1,
            "count": 4475125,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4475125,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5017345884,
            "count": 4475125,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999970471,
            "variance": 0.2499970471
          },
          {
            "average": 0.0005322756348,
            "count": 4475125,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02306496122,
            "variance": 0.0005319924363
          },
          {
            "average": 1.237490126,
            "count": 4475125,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5521460753,
            "variance": 0.3048652884
          },
          {
            "average": 1.07366783,
            "count": 4475125,
            "maximum": 20.52000046,
            "minimum": -19.65600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.9592946,
            "variance": 120.1061381
          },
          {
            "average": 0.5209700288,
            "count": 4475125,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995601202,
            "variance": 0.2495603137
          },
          {
            "average": 424.8744886,
            "count": 4475125,
            "maximum": 468,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.72735814,
            "variance": 429.6233753
          },
          {
            "average": 220479528.9,
            "count": 4475125,
            "maximum": 220727478.6,
            "minimum": 220419154.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 121570.1567,
            "variance": 14779302990.0
          },
          {
            "average": 0.5209700288,
            "count": 4475125,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995601202,
            "variance": 0.2495603137
          },
          {
            "average": 0,
            "count": 4475125,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4475125,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4475125,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2659704478,
            "count": 4475125,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4418486305,
            "variance": 0.1952302123
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104854.2183,
          2361702.288,
          2.011572129,
          -104358.8183,
          2362176.088,
          10.49157213
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104854.21831941449,
                2361702.287634242,
                2.011572128862446
              ],
              [
                -104854.21831941449,
                2362176.0876342417,
                2.011572128862446
              ],
              [
                -104358.8183194145,
                2362176.0876342417,
                10.491572128862447
              ],
              [
                -104358.8183194145,
                2361702.287634242,
                10.491572128862447
              ],
              [
                -104854.21831941449,
                2361702.287634242,
                2.011572128862446
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:57:58+00:00",
        "end_time": "2018-09-08T05:19:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1453.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1453.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1453.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1453.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8499658,
            71.2315742,
            2.011572129,
            -156.8359675,
            71.23611603,
            10.49157213
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84941361378475,
                  71.23157419793469,
                  2.011572128862446
                ],
                [
                  -156.84996581499377,
                  71.23592131069154,
                  2.011572128862446
                ],
                [
                  -156.83651711877494,
                  71.2361160300245,
                  10.491572128862447
                ],
                [
                  -156.8359675169922,
                  71.23176887391206,
                  10.491572128862447
                ],
                [
                  -156.84941361378475,
                  71.23157419793469,
                  2.011572128862446
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1453.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1453.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:57:58Z",
            "pc:count": 4475125,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104606.8847,
                "count": 4475125,
                "maximum": -104358.8183,
                "minimum": -104854.2183,
                "name": "X",
                "position": 0,
                "stddev": 133.8635556,
                "variance": 17919.45151
              },
              {
                "average": 2361936.985,
                "count": 4475125,
                "maximum": 2362176.088,
                "minimum": 2361702.288,
                "name": "Y",
                "position": 1,
                "stddev": 130.6871913,
                "variance": 17079.14196
              },
              {
                "average": 8.264472137,
                "count": 4475125,
                "maximum": 10.49157213,
                "minimum": 2.011572129,
                "name": "Z",
                "position": 2,
                "stddev": 1.905091463,
                "variance": 3.629373484
              },
              {
                "average": 47596.55382,
                "count": 4475125,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7390.698788,
                "variance": 54622428.58
              },
              {
                "average": 1,
                "count": 4475125,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4475125,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5017345884,
                "count": 4475125,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999970471,
                "variance": 0.2499970471
              },
              {
                "average": 0.0005322756348,
                "count": 4475125,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02306496122,
                "variance": 0.0005319924363
              },
              {
                "average": 1.237490126,
                "count": 4475125,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5521460753,
                "variance": 0.3048652884
              },
              {
                "average": 1.07366783,
                "count": 4475125,
                "maximum": 20.52000046,
                "minimum": -19.65600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.9592946,
                "variance": 120.1061381
              },
              {
                "average": 0.5209700288,
                "count": 4475125,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995601202,
                "variance": 0.2495603137
              },
              {
                "average": 424.8744886,
                "count": 4475125,
                "maximum": 468,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.72735814,
                "variance": 429.6233753
              },
              {
                "average": 220479528.9,
                "count": 4475125,
                "maximum": 220727478.6,
                "minimum": 220419154.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 121570.1567,
                "variance": 14779302990.0
              },
              {
                "average": 0.5209700288,
                "count": 4475125,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995601202,
                "variance": 0.2495603137
              },
              {
                "average": 0,
                "count": 4475125,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4475125,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4475125,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2659704478,
                "count": 4475125,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4418486305,
                "variance": 0.1952302123
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104854.2183,
              2361702.288,
              2.011572129,
              -104358.8183,
              2362176.088,
              10.49157213
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104854.21831941449,
                    2361702.287634242,
                    2.011572128862446
                  ],
                  [
                    -104854.21831941449,
                    2362176.0876342417,
                    2.011572128862446
                  ],
                  [
                    -104358.8183194145,
                    2362176.0876342417,
                    10.491572128862447
                  ],
                  [
                    -104358.8183194145,
                    2361702.287634242,
                    10.491572128862447
                  ],
                  [
                    -104854.21831941449,
                    2361702.287634242,
                    2.011572128862446
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:57:58+00:00",
            "end_time": "2018-09-08T05:19:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0335.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.41901081714587,
              70.48420197137727,
              8.413022788950428
            ],
            [
              -157.4196544328922,
              70.48854413639863,
              8.413022788950428
            ],
            [
              -157.40671364142293,
              70.48877555068542,
              42.41302278895043
            ],
            [
              -157.4060724527074,
              70.48443333632979,
              42.41302278895043
            ],
            [
              -157.41901081714587,
              70.48420197137727,
              8.413022788950428
            ]
          ]
        ]
      },
      "bbox": [
        -157.4196544,
        70.48420197,
        8.413022789,
        -157.4060725,
        70.48877555,
        42.41302279
      ],
      "properties": {
        "datetime": "2018-09-29T23:32:13Z",
        "pc:count": 3964130,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129770.5265,
            "count": 3964130,
            "maximum": -129502.7519,
            "minimum": -129995.5519,
            "name": "X",
            "position": 0,
            "stddev": 135.8246741,
            "variance": 18448.3421
          },
          {
            "average": 2281450.692,
            "count": 3964130,
            "maximum": 2281697.469,
            "minimum": 2281221.809,
            "name": "Y",
            "position": 1,
            "stddev": 123.8670644,
            "variance": 15343.04964
          },
          {
            "average": 17.74977211,
            "count": 3964130,
            "maximum": 42.41302279,
            "minimum": 8.413022789,
            "name": "Z",
            "position": 2,
            "stddev": 7.695533004,
            "variance": 59.22122822
          },
          {
            "average": 37637.40055,
            "count": 3964130,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15983.83294,
            "variance": 255482915.4
          },
          {
            "average": 1.000849367,
            "count": 3964130,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02976542114,
            "variance": 0.0008859802954
          },
          {
            "average": 1.001699995,
            "count": 3964130,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04255734571,
            "variance": 0.001811127674
          },
          {
            "average": 0.4964917901,
            "count": 3964130,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999877554,
            "variance": 0.2499877555
          },
          {
            "average": 0.0003602303658,
            "count": 3964130,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01897631921,
            "variance": 0.0003601006907
          },
          {
            "average": 3.055601607,
            "count": 3964130,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.270949346,
            "variance": 10.69910962
          },
          {
            "average": 2.525603755,
            "count": 3964130,
            "maximum": 20.43600082,
            "minimum": -15.91800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.884443502,
            "variance": 97.70222334
          },
          {
            "average": 0.503935542,
            "count": 3964130,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999845743,
            "variance": 0.2499845746
          },
          {
            "average": 662.9871298,
            "count": 3964130,
            "maximum": 709,
            "minimum": 650,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.38145626,
            "variance": 546.6924967
          },
          {
            "average": 222295304.3,
            "count": 3964130,
            "maximum": 222299133.1,
            "minimum": 222294136.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1902.440731,
            "variance": 3619280.733
          },
          {
            "average": 0.503935542,
            "count": 3964130,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999845743,
            "variance": 0.2499845746
          },
          {
            "average": 0,
            "count": 3964130,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3964130,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3964130,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.156651018,
            "count": 3964130,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3634714705,
            "variance": 0.1321115099
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129995.5519,
          2281221.809,
          8.413022789,
          -129502.7519,
          2281697.469,
          42.41302279
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129995.55189128744,
                2281221.8089078646,
                8.413022788950428
              ],
              [
                -129995.55189128744,
                2281697.4689078648,
                8.413022788950428
              ],
              [
                -129502.75189128745,
                2281697.4689078648,
                42.41302278895043
              ],
              [
                -129502.75189128745,
                2281221.8089078646,
                42.41302278895043
              ],
              [
                -129995.55189128744,
                2281221.8089078646,
                8.413022788950428
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:32:13+00:00",
        "end_time": "2018-09-29T22:08:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0335.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0335.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0335.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0335.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4196544,
            70.48420197,
            8.413022789,
            -157.4060725,
            70.48877555,
            42.41302279
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.41901081714587,
                  70.48420197137727,
                  8.413022788950428
                ],
                [
                  -157.4196544328922,
                  70.48854413639863,
                  8.413022788950428
                ],
                [
                  -157.40671364142293,
                  70.48877555068542,
                  42.41302278895043
                ],
                [
                  -157.4060724527074,
                  70.48443333632979,
                  42.41302278895043
                ],
                [
                  -157.41901081714587,
                  70.48420197137727,
                  8.413022788950428
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0335.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0335.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:32:13Z",
            "pc:count": 3964130,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129770.5265,
                "count": 3964130,
                "maximum": -129502.7519,
                "minimum": -129995.5519,
                "name": "X",
                "position": 0,
                "stddev": 135.8246741,
                "variance": 18448.3421
              },
              {
                "average": 2281450.692,
                "count": 3964130,
                "maximum": 2281697.469,
                "minimum": 2281221.809,
                "name": "Y",
                "position": 1,
                "stddev": 123.8670644,
                "variance": 15343.04964
              },
              {
                "average": 17.74977211,
                "count": 3964130,
                "maximum": 42.41302279,
                "minimum": 8.413022789,
                "name": "Z",
                "position": 2,
                "stddev": 7.695533004,
                "variance": 59.22122822
              },
              {
                "average": 37637.40055,
                "count": 3964130,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15983.83294,
                "variance": 255482915.4
              },
              {
                "average": 1.000849367,
                "count": 3964130,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02976542114,
                "variance": 0.0008859802954
              },
              {
                "average": 1.001699995,
                "count": 3964130,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04255734571,
                "variance": 0.001811127674
              },
              {
                "average": 0.4964917901,
                "count": 3964130,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999877554,
                "variance": 0.2499877555
              },
              {
                "average": 0.0003602303658,
                "count": 3964130,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01897631921,
                "variance": 0.0003601006907
              },
              {
                "average": 3.055601607,
                "count": 3964130,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.270949346,
                "variance": 10.69910962
              },
              {
                "average": 2.525603755,
                "count": 3964130,
                "maximum": 20.43600082,
                "minimum": -15.91800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.884443502,
                "variance": 97.70222334
              },
              {
                "average": 0.503935542,
                "count": 3964130,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999845743,
                "variance": 0.2499845746
              },
              {
                "average": 662.9871298,
                "count": 3964130,
                "maximum": 709,
                "minimum": 650,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.38145626,
                "variance": 546.6924967
              },
              {
                "average": 222295304.3,
                "count": 3964130,
                "maximum": 222299133.1,
                "minimum": 222294136.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1902.440731,
                "variance": 3619280.733
              },
              {
                "average": 0.503935542,
                "count": 3964130,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999845743,
                "variance": 0.2499845746
              },
              {
                "average": 0,
                "count": 3964130,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3964130,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3964130,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.156651018,
                "count": 3964130,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3634714705,
                "variance": 0.1321115099
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129995.5519,
              2281221.809,
              8.413022789,
              -129502.7519,
              2281697.469,
              42.41302279
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129995.55189128744,
                    2281221.8089078646,
                    8.413022788950428
                  ],
                  [
                    -129995.55189128744,
                    2281697.4689078648,
                    8.413022788950428
                  ],
                  [
                    -129502.75189128745,
                    2281697.4689078648,
                    42.41302278895043
                  ],
                  [
                    -129502.75189128745,
                    2281221.8089078646,
                    42.41302278895043
                  ],
                  [
                    -129995.55189128744,
                    2281221.8089078646,
                    8.413022788950428
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:32:13+00:00",
            "end_time": "2018-09-29T22:08:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1514.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77280461196298,
              71.23518820998363,
              9.488129200693601
            ],
            [
              -156.77334190320602,
              71.2395343555007,
              9.488129200693601
            ],
            [
              -156.75988604302577,
              71.23972389584664,
              10.1881292006936
            ],
            [
              -156.7593513526248,
              71.2353777081277,
              10.1881292006936
            ],
            [
              -156.77280461196298,
              71.23518820998363,
              9.488129200693601
            ]
          ]
        ]
      },
      "bbox": [
        -156.7733419,
        71.23518821,
        9.488129201,
        -156.7593514,
        71.2397239,
        10.1881292
      ],
      "properties": {
        "datetime": "2018-09-11T18:53:58Z",
        "pc:count": 2206740,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101769.4061,
            "count": 2206740,
            "maximum": -101524.7948,
            "minimum": -102020.3548,
            "name": "X",
            "position": 0,
            "stddev": 134.8495649,
            "variance": 18184.40514
          },
          {
            "average": 2362206.799,
            "count": 2206740,
            "maximum": 2362449.811,
            "minimum": 2361976.151,
            "name": "Y",
            "position": 1,
            "stddev": 130.2152461,
            "variance": 16956.01031
          },
          {
            "average": 9.671390831,
            "count": 2206740,
            "maximum": 10.1881292,
            "minimum": 9.488129201,
            "name": "Z",
            "position": 2,
            "stddev": 0.03250435015,
            "variance": 0.001056532779
          },
          {
            "average": 18174.50811,
            "count": 2206740,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13598.84457,
            "variance": 184928573.7
          },
          {
            "average": 1,
            "count": 2206740,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2206740,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5033909749,
            "count": 2206740,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999886144,
            "variance": 0.2499886146
          },
          {
            "average": 0.000637138947,
            "count": 2206740,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02523357465,
            "variance": 0.0006367332895
          },
          {
            "average": 8.567640048,
            "count": 2206740,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.315267823,
            "variance": 1.729929446
          },
          {
            "average": -1.088509976,
            "count": 2206740,
            "maximum": 16.36199951,
            "minimum": -19.77000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.996491927,
            "variance": 48.95089929
          },
          {
            "average": 0.4883910202,
            "count": 2206740,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998653267,
            "variance": 0.2498653448
          },
          {
            "average": 431.1343493,
            "count": 2206740,
            "maximum": 467,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.57963825,
            "variance": 423.5215107
          },
          {
            "average": 220500179.4,
            "count": 2206740,
            "maximum": 220727238.2,
            "minimum": 220421276.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 132804.5433,
            "variance": 17637046720.0
          },
          {
            "average": 0.4883910202,
            "count": 2206740,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998653267,
            "variance": 0.2498653448
          },
          {
            "average": 0,
            "count": 2206740,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2206740,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2206740,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01371434786,
            "count": 2206740,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1163024963,
            "variance": 0.01352627065
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102020.3548,
          2361976.151,
          9.488129201,
          -101524.7948,
          2362449.811,
          10.1881292
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102020.35479284165,
                2361976.150634027,
                9.488129200693601
              ],
              [
                -102020.35479284165,
                2362449.8106340272,
                9.488129200693601
              ],
              [
                -101524.79479284165,
                2362449.8106340272,
                10.1881292006936
              ],
              [
                -101524.79479284165,
                2361976.150634027,
                10.1881292006936
              ],
              [
                -102020.35479284165,
                2361976.150634027,
                9.488129200693601
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:53:58+00:00",
        "end_time": "2018-09-08T05:54:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1514.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1514.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1514.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1514.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7733419,
            71.23518821,
            9.488129201,
            -156.7593514,
            71.2397239,
            10.1881292
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77280461196298,
                  71.23518820998363,
                  9.488129200693601
                ],
                [
                  -156.77334190320602,
                  71.2395343555007,
                  9.488129200693601
                ],
                [
                  -156.75988604302577,
                  71.23972389584664,
                  10.1881292006936
                ],
                [
                  -156.7593513526248,
                  71.2353777081277,
                  10.1881292006936
                ],
                [
                  -156.77280461196298,
                  71.23518820998363,
                  9.488129200693601
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1514.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1514.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:53:58Z",
            "pc:count": 2206740,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101769.4061,
                "count": 2206740,
                "maximum": -101524.7948,
                "minimum": -102020.3548,
                "name": "X",
                "position": 0,
                "stddev": 134.8495649,
                "variance": 18184.40514
              },
              {
                "average": 2362206.799,
                "count": 2206740,
                "maximum": 2362449.811,
                "minimum": 2361976.151,
                "name": "Y",
                "position": 1,
                "stddev": 130.2152461,
                "variance": 16956.01031
              },
              {
                "average": 9.671390831,
                "count": 2206740,
                "maximum": 10.1881292,
                "minimum": 9.488129201,
                "name": "Z",
                "position": 2,
                "stddev": 0.03250435015,
                "variance": 0.001056532779
              },
              {
                "average": 18174.50811,
                "count": 2206740,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13598.84457,
                "variance": 184928573.7
              },
              {
                "average": 1,
                "count": 2206740,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2206740,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5033909749,
                "count": 2206740,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999886144,
                "variance": 0.2499886146
              },
              {
                "average": 0.000637138947,
                "count": 2206740,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02523357465,
                "variance": 0.0006367332895
              },
              {
                "average": 8.567640048,
                "count": 2206740,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.315267823,
                "variance": 1.729929446
              },
              {
                "average": -1.088509976,
                "count": 2206740,
                "maximum": 16.36199951,
                "minimum": -19.77000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.996491927,
                "variance": 48.95089929
              },
              {
                "average": 0.4883910202,
                "count": 2206740,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998653267,
                "variance": 0.2498653448
              },
              {
                "average": 431.1343493,
                "count": 2206740,
                "maximum": 467,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.57963825,
                "variance": 423.5215107
              },
              {
                "average": 220500179.4,
                "count": 2206740,
                "maximum": 220727238.2,
                "minimum": 220421276.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 132804.5433,
                "variance": 17637046720.0
              },
              {
                "average": 0.4883910202,
                "count": 2206740,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998653267,
                "variance": 0.2498653448
              },
              {
                "average": 0,
                "count": 2206740,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2206740,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2206740,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01371434786,
                "count": 2206740,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1163024963,
                "variance": 0.01352627065
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102020.3548,
              2361976.151,
              9.488129201,
              -101524.7948,
              2362449.811,
              10.1881292
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102020.35479284165,
                    2361976.150634027,
                    9.488129200693601
                  ],
                  [
                    -102020.35479284165,
                    2362449.8106340272,
                    9.488129200693601
                  ],
                  [
                    -101524.79479284165,
                    2362449.8106340272,
                    10.1881292006936
                  ],
                  [
                    -101524.79479284165,
                    2361976.150634027,
                    10.1881292006936
                  ],
                  [
                    -102020.35479284165,
                    2361976.150634027,
                    9.488129200693601
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:53:58+00:00",
            "end_time": "2018-09-08T05:54:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0266.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.41936055635566,
              70.47190739755213,
              14.493052423491784
            ],
            [
              -157.4200039764293,
              70.47624980032369,
              14.493052423491784
            ],
            [
              -157.40707112616428,
              70.47648120330962,
              40.39305242349179
            ],
            [
              -157.40643013064505,
              70.47213875123725,
              40.39305242349179
            ],
            [
              -157.41936055635566,
              70.47190739755213,
              14.493052423491784
            ]
          ]
        ]
      },
      "bbox": [
        -157.420004,
        70.4719074,
        14.49305242,
        -157.4064301,
        70.4764812,
        40.39305242
      ],
      "properties": {
        "datetime": "2018-09-29T23:31:53Z",
        "pc:count": 4946898,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129823.9285,
            "count": 4946898,
            "maximum": -129585.3025,
            "minimum": -130078.0625,
            "name": "X",
            "position": 0,
            "stddev": 133.0311364,
            "variance": 17697.28325
          },
          {
            "average": 2280107.7,
            "count": 4946898,
            "maximum": 2280354.914,
            "minimum": 2279879.194,
            "name": "Y",
            "position": 1,
            "stddev": 127.655981,
            "variance": 16296.0495
          },
          {
            "average": 25.84447496,
            "count": 4946898,
            "maximum": 40.39305242,
            "minimum": 14.49305242,
            "name": "Z",
            "position": 2,
            "stddev": 2.42603464,
            "variance": 5.885644074
          },
          {
            "average": 40960.29618,
            "count": 4946898,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13754.14251,
            "variance": 189176436.3
          },
          {
            "average": 1.002131639,
            "count": 4946898,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04651758961,
            "variance": 0.002163886143
          },
          {
            "average": 1.004265703,
            "count": 4946898,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06601424338,
            "variance": 0.004357880329
          },
          {
            "average": 0.4945982311,
            "count": 4946898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999708706,
            "variance": 0.2499708714
          },
          {
            "average": 0.0003664922948,
            "count": 4946898,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01914048203,
            "variance": 0.0003663580522
          },
          {
            "average": 2.042803187,
            "count": 4946898,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.35995915,
            "variance": 5.569407191
          },
          {
            "average": 3.235578953,
            "count": 4946898,
            "maximum": 20.41200066,
            "minimum": -16.12199974,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53537111,
            "variance": 110.9940444
          },
          {
            "average": 0.4970615929,
            "count": 4946898,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999914162,
            "variance": 0.2499914163
          },
          {
            "average": 666.6229465,
            "count": 4946898,
            "maximum": 709,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.40266002,
            "variance": 458.073856
          },
          {
            "average": 222295929.9,
            "count": 4946898,
            "maximum": 222299113.9,
            "minimum": 222294852,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1558.237192,
            "variance": 2428103.146
          },
          {
            "average": 0.4970615929,
            "count": 4946898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999914162,
            "variance": 0.2499914163
          },
          {
            "average": 0,
            "count": 4946898,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4946898,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4946898,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.204433162,
            "count": 4946898,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4032868422,
            "variance": 0.1626402771
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130078.0625,
          2279879.194,
          14.49305242,
          -129585.3025,
          2280354.914,
          40.39305242
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130078.06246215454,
                2279879.1939718975,
                14.493052423491784
              ],
              [
                -130078.06246215454,
                2280354.913971897,
                14.493052423491784
              ],
              [
                -129585.30246215453,
                2280354.913971897,
                40.39305242349179
              ],
              [
                -129585.30246215453,
                2279879.1939718975,
                40.39305242349179
              ],
              [
                -130078.06246215454,
                2279879.1939718975,
                14.493052423491784
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:31:53+00:00",
        "end_time": "2018-09-29T22:20:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0266.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0266.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0266.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0266.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.420004,
            70.4719074,
            14.49305242,
            -157.4064301,
            70.4764812,
            40.39305242
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.41936055635566,
                  70.47190739755213,
                  14.493052423491784
                ],
                [
                  -157.4200039764293,
                  70.47624980032369,
                  14.493052423491784
                ],
                [
                  -157.40707112616428,
                  70.47648120330962,
                  40.39305242349179
                ],
                [
                  -157.40643013064505,
                  70.47213875123725,
                  40.39305242349179
                ],
                [
                  -157.41936055635566,
                  70.47190739755213,
                  14.493052423491784
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0266.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0266.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:31:53Z",
            "pc:count": 4946898,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129823.9285,
                "count": 4946898,
                "maximum": -129585.3025,
                "minimum": -130078.0625,
                "name": "X",
                "position": 0,
                "stddev": 133.0311364,
                "variance": 17697.28325
              },
              {
                "average": 2280107.7,
                "count": 4946898,
                "maximum": 2280354.914,
                "minimum": 2279879.194,
                "name": "Y",
                "position": 1,
                "stddev": 127.655981,
                "variance": 16296.0495
              },
              {
                "average": 25.84447496,
                "count": 4946898,
                "maximum": 40.39305242,
                "minimum": 14.49305242,
                "name": "Z",
                "position": 2,
                "stddev": 2.42603464,
                "variance": 5.885644074
              },
              {
                "average": 40960.29618,
                "count": 4946898,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13754.14251,
                "variance": 189176436.3
              },
              {
                "average": 1.002131639,
                "count": 4946898,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04651758961,
                "variance": 0.002163886143
              },
              {
                "average": 1.004265703,
                "count": 4946898,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06601424338,
                "variance": 0.004357880329
              },
              {
                "average": 0.4945982311,
                "count": 4946898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999708706,
                "variance": 0.2499708714
              },
              {
                "average": 0.0003664922948,
                "count": 4946898,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01914048203,
                "variance": 0.0003663580522
              },
              {
                "average": 2.042803187,
                "count": 4946898,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.35995915,
                "variance": 5.569407191
              },
              {
                "average": 3.235578953,
                "count": 4946898,
                "maximum": 20.41200066,
                "minimum": -16.12199974,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53537111,
                "variance": 110.9940444
              },
              {
                "average": 0.4970615929,
                "count": 4946898,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999914162,
                "variance": 0.2499914163
              },
              {
                "average": 666.6229465,
                "count": 4946898,
                "maximum": 709,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.40266002,
                "variance": 458.073856
              },
              {
                "average": 222295929.9,
                "count": 4946898,
                "maximum": 222299113.9,
                "minimum": 222294852,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1558.237192,
                "variance": 2428103.146
              },
              {
                "average": 0.4970615929,
                "count": 4946898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999914162,
                "variance": 0.2499914163
              },
              {
                "average": 0,
                "count": 4946898,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4946898,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4946898,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.204433162,
                "count": 4946898,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4032868422,
                "variance": 0.1626402771
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130078.0625,
              2279879.194,
              14.49305242,
              -129585.3025,
              2280354.914,
              40.39305242
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130078.06246215454,
                    2279879.1939718975,
                    14.493052423491784
                  ],
                  [
                    -130078.06246215454,
                    2280354.913971897,
                    14.493052423491784
                  ],
                  [
                    -129585.30246215453,
                    2280354.913971897,
                    40.39305242349179
                  ],
                  [
                    -129585.30246215453,
                    2279879.1939718975,
                    40.39305242349179
                  ],
                  [
                    -130078.06246215454,
                    2279879.1939718975,
                    14.493052423491784
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:31:53+00:00",
            "end_time": "2018-09-29T22:20:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1509.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83644331060924,
              71.23559321380661,
              6.071074335529605
            ],
            [
              -156.8369930750074,
              71.23994029611848,
              6.071074335529605
            ],
            [
              -156.82354022913705,
              71.2401341560917,
              13.511074335529607
            ],
            [
              -156.82299306538832,
              71.23578703060588,
              13.511074335529607
            ],
            [
              -156.83644331060924,
              71.23559321380661,
              6.071074335529605
            ]
          ]
        ]
      },
      "bbox": [
        -156.8369931,
        71.23559321,
        6.071074336,
        -156.8229931,
        71.24013416,
        13.51107434
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:31Z",
        "pc:count": 3957315,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104110.3257,
            "count": 3957315,
            "maximum": -103863.0752,
            "minimum": -104358.5352,
            "name": "X",
            "position": 0,
            "stddev": 136.1310796,
            "variance": 18531.67084
          },
          {
            "average": 2362350.028,
            "count": 3957315,
            "maximum": 2362592.874,
            "minimum": 2362119.094,
            "name": "Y",
            "position": 1,
            "stddev": 127.5985453,
            "variance": 16281.38877
          },
          {
            "average": 9.701605026,
            "count": 3957315,
            "maximum": 13.51107434,
            "minimum": 6.071074336,
            "name": "Z",
            "position": 2,
            "stddev": 1.721521045,
            "variance": 2.963634708
          },
          {
            "average": 47260.59966,
            "count": 3957315,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8558.388239,
            "variance": 73246009.24
          },
          {
            "average": 1,
            "count": 3957315,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3957315,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5075274523,
            "count": 3957315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999433974,
            "variance": 0.2499434006
          },
          {
            "average": 0.0004270572345,
            "count": 3957315,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02066095265,
            "variance": 0.0004268749645
          },
          {
            "average": 1.251043195,
            "count": 3957315,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4342027345,
            "variance": 0.1885320146
          },
          {
            "average": -1.668316888,
            "count": 3957315,
            "maximum": 16.46999931,
            "minimum": -19.87800026,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.00822942,
            "variance": 121.1811149
          },
          {
            "average": 0.5228292415,
            "count": 3957315,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994786169,
            "variance": 0.2494788888
          },
          {
            "average": 427.7673837,
            "count": 3957315,
            "maximum": 467,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.47596013,
            "variance": 505.1687838
          },
          {
            "average": 220497400.1,
            "count": 3957315,
            "maximum": 220727271.4,
            "minimum": 220419143.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133359.2323,
            "variance": 17784684840.0
          },
          {
            "average": 0.5228292415,
            "count": 3957315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994786169,
            "variance": 0.2494788888
          },
          {
            "average": 0,
            "count": 3957315,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3957315,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3957315,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2222052073,
            "count": 3957315,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4157283931,
            "variance": 0.1728300968
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104358.5352,
          2362119.094,
          6.071074336,
          -103863.0752,
          2362592.874,
          13.51107434
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104358.53522295199,
                2362119.0940992297,
                6.071074335529605
              ],
              [
                -104358.53522295199,
                2362592.87409923,
                6.071074335529605
              ],
              [
                -103863.075222952,
                2362592.87409923,
                13.511074335529607
              ],
              [
                -103863.075222952,
                2362119.0940992297,
                13.511074335529607
              ],
              [
                -104358.53522295199,
                2362119.0940992297,
                6.071074335529605
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:31+00:00",
        "end_time": "2018-09-08T05:19:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1509.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1509.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1509.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1509.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8369931,
            71.23559321,
            6.071074336,
            -156.8229931,
            71.24013416,
            13.51107434
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83644331060924,
                  71.23559321380661,
                  6.071074335529605
                ],
                [
                  -156.8369930750074,
                  71.23994029611848,
                  6.071074335529605
                ],
                [
                  -156.82354022913705,
                  71.2401341560917,
                  13.511074335529607
                ],
                [
                  -156.82299306538832,
                  71.23578703060588,
                  13.511074335529607
                ],
                [
                  -156.83644331060924,
                  71.23559321380661,
                  6.071074335529605
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1509.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1509.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:31Z",
            "pc:count": 3957315,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104110.3257,
                "count": 3957315,
                "maximum": -103863.0752,
                "minimum": -104358.5352,
                "name": "X",
                "position": 0,
                "stddev": 136.1310796,
                "variance": 18531.67084
              },
              {
                "average": 2362350.028,
                "count": 3957315,
                "maximum": 2362592.874,
                "minimum": 2362119.094,
                "name": "Y",
                "position": 1,
                "stddev": 127.5985453,
                "variance": 16281.38877
              },
              {
                "average": 9.701605026,
                "count": 3957315,
                "maximum": 13.51107434,
                "minimum": 6.071074336,
                "name": "Z",
                "position": 2,
                "stddev": 1.721521045,
                "variance": 2.963634708
              },
              {
                "average": 47260.59966,
                "count": 3957315,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8558.388239,
                "variance": 73246009.24
              },
              {
                "average": 1,
                "count": 3957315,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3957315,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5075274523,
                "count": 3957315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999433974,
                "variance": 0.2499434006
              },
              {
                "average": 0.0004270572345,
                "count": 3957315,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02066095265,
                "variance": 0.0004268749645
              },
              {
                "average": 1.251043195,
                "count": 3957315,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4342027345,
                "variance": 0.1885320146
              },
              {
                "average": -1.668316888,
                "count": 3957315,
                "maximum": 16.46999931,
                "minimum": -19.87800026,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.00822942,
                "variance": 121.1811149
              },
              {
                "average": 0.5228292415,
                "count": 3957315,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994786169,
                "variance": 0.2494788888
              },
              {
                "average": 427.7673837,
                "count": 3957315,
                "maximum": 467,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.47596013,
                "variance": 505.1687838
              },
              {
                "average": 220497400.1,
                "count": 3957315,
                "maximum": 220727271.4,
                "minimum": 220419143.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133359.2323,
                "variance": 17784684840.0
              },
              {
                "average": 0.5228292415,
                "count": 3957315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994786169,
                "variance": 0.2494788888
              },
              {
                "average": 0,
                "count": 3957315,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3957315,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3957315,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2222052073,
                "count": 3957315,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4157283931,
                "variance": 0.1728300968
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104358.5352,
              2362119.094,
              6.071074336,
              -103863.0752,
              2362592.874,
              13.51107434
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104358.53522295199,
                    2362119.0940992297,
                    6.071074335529605
                  ],
                  [
                    -104358.53522295199,
                    2362592.87409923,
                    6.071074335529605
                  ],
                  [
                    -103863.075222952,
                    2362592.87409923,
                    13.511074335529607
                  ],
                  [
                    -103863.075222952,
                    2362119.0940992297,
                    13.511074335529607
                  ],
                  [
                    -104358.53522295199,
                    2362119.0940992297,
                    6.071074335529605
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:31+00:00",
            "end_time": "2018-09-08T05:19:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1507.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8619007148758,
              71.23574896512531,
              1.922413393239193
            ],
            [
              -156.8624554142794,
              71.24009598041195,
              1.922413393239193
            ],
            [
              -156.8489994372359,
              71.240291630838,
              16.042413393239194
            ],
            [
              -156.84844733897677,
              71.23594457197892,
              16.042413393239194
            ],
            [
              -156.8619007148758,
              71.23574896512531,
              1.922413393239193
            ]
          ]
        ]
      },
      "bbox": [
        -156.8624554,
        71.23574897,
        1.922413393,
        -156.8484473,
        71.24029163,
        16.04241339
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:44Z",
        "pc:count": 4018733,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105070.5123,
            "count": 4018733,
            "maximum": -104798.2771,
            "minimum": -105293.8571,
            "name": "X",
            "position": 0,
            "stddev": 123.843346,
            "variance": 15337.17434
          },
          {
            "average": 2362409.736,
            "count": 4018733,
            "maximum": 2362650.001,
            "minimum": 2362176.221,
            "name": "Y",
            "position": 1,
            "stddev": 126.8314249,
            "variance": 16086.21034
          },
          {
            "average": 8.692759883,
            "count": 4018733,
            "maximum": 16.04241339,
            "minimum": 1.922413393,
            "name": "Z",
            "position": 2,
            "stddev": 2.446173131,
            "variance": 5.983762985
          },
          {
            "average": 47755.40544,
            "count": 4018733,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 8990.940596,
            "variance": 80837012.8
          },
          {
            "average": 1.000000498,
            "count": 4018733,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007054567077,
            "variance": 4.976691665e-07
          },
          {
            "average": 1.000000995,
            "count": 4018733,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009976661955,
            "variance": 9.953378376e-07
          },
          {
            "average": 0.5055421696,
            "count": 4018733,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999693456,
            "variance": 0.2499693466
          },
          {
            "average": 0.0004357094637,
            "count": 4018733,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02086910945,
            "variance": 0.0004355197293
          },
          {
            "average": 1.430126858,
            "count": 4018733,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.336784465,
            "variance": 1.786992705
          },
          {
            "average": -1.495878066,
            "count": 4018733,
            "maximum": 16.44000053,
            "minimum": -19.70400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.85940745,
            "variance": 117.9267301
          },
          {
            "average": 0.5072802796,
            "count": 4018733,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999470569,
            "variance": 0.2499470597
          },
          {
            "average": 424.7968681,
            "count": 4018733,
            "maximum": 467,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.18416941,
            "variance": 492.1373726
          },
          {
            "average": 220487022.7,
            "count": 4018733,
            "maximum": 220727284.5,
            "minimum": 220418056.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 127801.0304,
            "variance": 16333103360.0
          },
          {
            "average": 0.5072802796,
            "count": 4018733,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999470569,
            "variance": 0.2499470597
          },
          {
            "average": 0,
            "count": 4018733,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4018733,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4018733,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2159675699,
            "count": 4018733,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.411491945,
            "variance": 0.1693256208
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105293.8571,
          2362176.221,
          1.922413393,
          -104798.2771,
          2362650.001,
          16.04241339
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105293.85713357305,
                2362176.221392299,
                1.922413393239193
              ],
              [
                -105293.85713357305,
                2362650.0013922993,
                1.922413393239193
              ],
              [
                -104798.27713357306,
                2362650.0013922993,
                16.042413393239194
              ],
              [
                -104798.27713357306,
                2362176.221392299,
                16.042413393239194
              ],
              [
                -105293.85713357305,
                2362176.221392299,
                1.922413393239193
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:44+00:00",
        "end_time": "2018-09-08T05:00:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1507.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1507.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1507.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1507.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8624554,
            71.23574897,
            1.922413393,
            -156.8484473,
            71.24029163,
            16.04241339
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8619007148758,
                  71.23574896512531,
                  1.922413393239193
                ],
                [
                  -156.8624554142794,
                  71.24009598041195,
                  1.922413393239193
                ],
                [
                  -156.8489994372359,
                  71.240291630838,
                  16.042413393239194
                ],
                [
                  -156.84844733897677,
                  71.23594457197892,
                  16.042413393239194
                ],
                [
                  -156.8619007148758,
                  71.23574896512531,
                  1.922413393239193
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1507.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1507.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:44Z",
            "pc:count": 4018733,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105070.5123,
                "count": 4018733,
                "maximum": -104798.2771,
                "minimum": -105293.8571,
                "name": "X",
                "position": 0,
                "stddev": 123.843346,
                "variance": 15337.17434
              },
              {
                "average": 2362409.736,
                "count": 4018733,
                "maximum": 2362650.001,
                "minimum": 2362176.221,
                "name": "Y",
                "position": 1,
                "stddev": 126.8314249,
                "variance": 16086.21034
              },
              {
                "average": 8.692759883,
                "count": 4018733,
                "maximum": 16.04241339,
                "minimum": 1.922413393,
                "name": "Z",
                "position": 2,
                "stddev": 2.446173131,
                "variance": 5.983762985
              },
              {
                "average": 47755.40544,
                "count": 4018733,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 8990.940596,
                "variance": 80837012.8
              },
              {
                "average": 1.000000498,
                "count": 4018733,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007054567077,
                "variance": 4.976691665e-07
              },
              {
                "average": 1.000000995,
                "count": 4018733,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009976661955,
                "variance": 9.953378376e-07
              },
              {
                "average": 0.5055421696,
                "count": 4018733,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999693456,
                "variance": 0.2499693466
              },
              {
                "average": 0.0004357094637,
                "count": 4018733,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02086910945,
                "variance": 0.0004355197293
              },
              {
                "average": 1.430126858,
                "count": 4018733,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.336784465,
                "variance": 1.786992705
              },
              {
                "average": -1.495878066,
                "count": 4018733,
                "maximum": 16.44000053,
                "minimum": -19.70400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.85940745,
                "variance": 117.9267301
              },
              {
                "average": 0.5072802796,
                "count": 4018733,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999470569,
                "variance": 0.2499470597
              },
              {
                "average": 424.7968681,
                "count": 4018733,
                "maximum": 467,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.18416941,
                "variance": 492.1373726
              },
              {
                "average": 220487022.7,
                "count": 4018733,
                "maximum": 220727284.5,
                "minimum": 220418056.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 127801.0304,
                "variance": 16333103360.0
              },
              {
                "average": 0.5072802796,
                "count": 4018733,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999470569,
                "variance": 0.2499470597
              },
              {
                "average": 0,
                "count": 4018733,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4018733,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4018733,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2159675699,
                "count": 4018733,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.411491945,
                "variance": 0.1693256208
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105293.8571,
              2362176.221,
              1.922413393,
              -104798.2771,
              2362650.001,
              16.04241339
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105293.85713357305,
                    2362176.221392299,
                    1.922413393239193
                  ],
                  [
                    -105293.85713357305,
                    2362650.0013922993,
                    1.922413393239193
                  ],
                  [
                    -104798.27713357306,
                    2362650.0013922993,
                    16.042413393239194
                  ],
                  [
                    -104798.27713357306,
                    2362176.221392299,
                    16.042413393239194
                  ],
                  [
                    -105293.85713357305,
                    2362176.221392299,
                    1.922413393239193
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:44+00:00",
            "end_time": "2018-09-08T05:00:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1510.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8237148512533,
              71.23551357877969,
              9.926608606392202
            ],
            [
              -156.82426219436397,
              71.23986106133361,
              9.926608606392202
            ],
            [
              -156.8108103726306,
              71.24005403417746,
              13.546608606392203
            ],
            [
              -156.8102656302454,
              71.23570650864337,
              13.546608606392203
            ],
            [
              -156.8237148512533,
              71.23551357877969,
              9.926608606392202
            ]
          ]
        ]
      },
      "bbox": [
        -156.8242622,
        71.23551358,
        9.926608606,
        -156.8102656,
        71.24005403,
        13.54660861
      ],
      "properties": {
        "datetime": "2018-09-11T18:54:24Z",
        "pc:count": 3780339,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103647.1711,
            "count": 3780339,
            "maximum": -103395.4607,
            "minimum": -103890.8807,
            "name": "X",
            "position": 0,
            "stddev": 137.6394491,
            "variance": 18944.61794
          },
          {
            "average": 2362317.398,
            "count": 3780339,
            "maximum": 2362564.294,
            "minimum": 2362090.474,
            "name": "Y",
            "position": 1,
            "stddev": 131.8471679,
            "variance": 17383.67568
          },
          {
            "average": 11.60597962,
            "count": 3780339,
            "maximum": 13.54660861,
            "minimum": 9.926608606,
            "name": "Z",
            "position": 2,
            "stddev": 0.4127035878,
            "variance": 0.1703242513
          },
          {
            "average": 39486.49824,
            "count": 3780339,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12942.5968,
            "variance": 167510812
          },
          {
            "average": 1,
            "count": 3780339,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3780339,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5048433487,
            "count": 3780339,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999766076,
            "variance": 0.2499766081
          },
          {
            "average": 0.000430649209,
            "count": 3780339,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0207476231,
            "variance": 0.0004304638641
          },
          {
            "average": 1.268851021,
            "count": 3780339,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4436665625,
            "variance": 0.1968400187
          },
          {
            "average": -2.945461701,
            "count": 3780339,
            "maximum": 16.33799934,
            "minimum": -19.78199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44818724,
            "variance": 109.1646167
          },
          {
            "average": 0.4722978548,
            "count": 3780339,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992320674,
            "variance": 0.2492326571
          },
          {
            "average": 428.4155744,
            "count": 3780339,
            "maximum": 467,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.15241608,
            "variance": 490.7295384
          },
          {
            "average": 220498135.8,
            "count": 3780339,
            "maximum": 220727264.4,
            "minimum": 220419324.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133379.5403,
            "variance": 17790101770.0
          },
          {
            "average": 0.4722978548,
            "count": 3780339,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992320674,
            "variance": 0.2492326571
          },
          {
            "average": 0,
            "count": 3780339,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3780339,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3780339,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1825624633,
            "count": 3780339,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.386307455,
            "variance": 0.1492334498
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103890.8807,
          2362090.474,
          9.926608606,
          -103395.4607,
          2362564.294,
          13.54660861
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103890.8807075194,
                2362090.4737697635,
                9.926608606392202
              ],
              [
                -103890.8807075194,
                2362564.293769764,
                9.926608606392202
              ],
              [
                -103395.46070751939,
                2362564.293769764,
                13.546608606392203
              ],
              [
                -103395.46070751939,
                2362090.4737697635,
                13.546608606392203
              ],
              [
                -103890.8807075194,
                2362090.4737697635,
                9.926608606392202
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:54:24+00:00",
        "end_time": "2018-09-08T05:22:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1510.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1510.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1510.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1510.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8242622,
            71.23551358,
            9.926608606,
            -156.8102656,
            71.24005403,
            13.54660861
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8237148512533,
                  71.23551357877969,
                  9.926608606392202
                ],
                [
                  -156.82426219436397,
                  71.23986106133361,
                  9.926608606392202
                ],
                [
                  -156.8108103726306,
                  71.24005403417746,
                  13.546608606392203
                ],
                [
                  -156.8102656302454,
                  71.23570650864337,
                  13.546608606392203
                ],
                [
                  -156.8237148512533,
                  71.23551357877969,
                  9.926608606392202
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1510.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1510.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:54:24Z",
            "pc:count": 3780339,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103647.1711,
                "count": 3780339,
                "maximum": -103395.4607,
                "minimum": -103890.8807,
                "name": "X",
                "position": 0,
                "stddev": 137.6394491,
                "variance": 18944.61794
              },
              {
                "average": 2362317.398,
                "count": 3780339,
                "maximum": 2362564.294,
                "minimum": 2362090.474,
                "name": "Y",
                "position": 1,
                "stddev": 131.8471679,
                "variance": 17383.67568
              },
              {
                "average": 11.60597962,
                "count": 3780339,
                "maximum": 13.54660861,
                "minimum": 9.926608606,
                "name": "Z",
                "position": 2,
                "stddev": 0.4127035878,
                "variance": 0.1703242513
              },
              {
                "average": 39486.49824,
                "count": 3780339,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12942.5968,
                "variance": 167510812
              },
              {
                "average": 1,
                "count": 3780339,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3780339,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5048433487,
                "count": 3780339,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999766076,
                "variance": 0.2499766081
              },
              {
                "average": 0.000430649209,
                "count": 3780339,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0207476231,
                "variance": 0.0004304638641
              },
              {
                "average": 1.268851021,
                "count": 3780339,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4436665625,
                "variance": 0.1968400187
              },
              {
                "average": -2.945461701,
                "count": 3780339,
                "maximum": 16.33799934,
                "minimum": -19.78199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44818724,
                "variance": 109.1646167
              },
              {
                "average": 0.4722978548,
                "count": 3780339,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992320674,
                "variance": 0.2492326571
              },
              {
                "average": 428.4155744,
                "count": 3780339,
                "maximum": 467,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.15241608,
                "variance": 490.7295384
              },
              {
                "average": 220498135.8,
                "count": 3780339,
                "maximum": 220727264.4,
                "minimum": 220419324.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133379.5403,
                "variance": 17790101770.0
              },
              {
                "average": 0.4722978548,
                "count": 3780339,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992320674,
                "variance": 0.2492326571
              },
              {
                "average": 0,
                "count": 3780339,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3780339,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3780339,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1825624633,
                "count": 3780339,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.386307455,
                "variance": 0.1492334498
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103890.8807,
              2362090.474,
              9.926608606,
              -103395.4607,
              2362564.294,
              13.54660861
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103890.8807075194,
                    2362090.4737697635,
                    9.926608606392202
                  ],
                  [
                    -103890.8807075194,
                    2362564.293769764,
                    9.926608606392202
                  ],
                  [
                    -103395.46070751939,
                    2362564.293769764,
                    13.546608606392203
                  ],
                  [
                    -103395.46070751939,
                    2362090.4737697635,
                    13.546608606392203
                  ],
                  [
                    -103890.8807075194,
                    2362090.4737697635,
                    9.926608606392202
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:54:24+00:00",
            "end_time": "2018-09-08T05:22:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0267.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.40711093254598,
              70.47186829376287,
              8.431467557659516
            ],
            [
              -157.4077519676778,
              70.47621018906854,
              8.431467557659516
            ],
            [
              -157.3948169176015,
              70.47644079952691,
              489.15146755765954
            ],
            [
              -157.39417830719563,
              70.47209885509517,
              489.15146755765954
            ],
            [
              -157.40711093254598,
              70.47186829376287,
              8.431467557659516
            ]
          ]
        ]
      },
      "bbox": [
        -157.407752,
        70.47186829,
        8.431467558,
        -157.3941783,
        70.4764408,
        489.1514676
      ],
      "properties": {
        "datetime": "2018-09-29T23:37:01Z",
        "pc:count": 4195080,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129379.5429,
            "count": 4195080,
            "maximum": -129119.8558,
            "minimum": -129612.6958,
            "name": "X",
            "position": 0,
            "stddev": 136.3169775,
            "variance": 18582.31835
          },
          {
            "average": 2280087.572,
            "count": 4195080,
            "maximum": 2280326.631,
            "minimum": 2279850.971,
            "name": "Y",
            "position": 1,
            "stddev": 129.569274,
            "variance": 16788.19677
          },
          {
            "average": 13.69499229,
            "count": 4195080,
            "maximum": 489.1514676,
            "minimum": 8.431467558,
            "name": "Z",
            "position": 2,
            "stddev": 4.349092548,
            "variance": 18.91460599
          },
          {
            "average": 36119.5475,
            "count": 4195080,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 15194.38906,
            "variance": 230869458.9
          },
          {
            "average": 1.000535866,
            "count": 4195080,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02314257547,
            "variance": 0.0005355787993
          },
          {
            "average": 1.001071732,
            "count": 4195080,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03271976916,
            "variance": 0.001070583294
          },
          {
            "average": 0.5004333648,
            "count": 4195080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998718,
            "variance": 0.2499998718
          },
          {
            "average": 0.0002822353805,
            "count": 4195080,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01679749359,
            "variance": 0.0002821557909
          },
          {
            "average": 3.022474422,
            "count": 4195080,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.28659341,
            "variance": 10.80169624
          },
          {
            "average": -0.0791029362,
            "count": 4195080,
            "maximum": 16.35000038,
            "minimum": -19.87199974,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.626357515,
            "variance": 92.666759
          },
          {
            "average": 0.4894712377,
            "count": 4195080,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998891925,
            "variance": 0.2498892047
          },
          {
            "average": 663.3796266,
            "count": 4195080,
            "maximum": 710,
            "minimum": 654,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.84501355,
            "variance": 355.1345356
          },
          {
            "average": 222295711.3,
            "count": 4195080,
            "maximum": 222299421.8,
            "minimum": 222294858.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1426.89466,
            "variance": 2036028.371
          },
          {
            "average": 0.4894712377,
            "count": 4195080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998891925,
            "variance": 0.2498892047
          },
          {
            "average": 0,
            "count": 4195080,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4195080,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4195080,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1491838058,
            "count": 4195080,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3562696004,
            "variance": 0.1269280281
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -129612.6958,
          2279850.971,
          8.431467558,
          -129119.8558,
          2280326.631,
          489.1514676
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -129612.69579875348,
                2279850.9711518725,
                8.431467557659516
              ],
              [
                -129612.69579875348,
                2280326.6311518727,
                8.431467557659516
              ],
              [
                -129119.85579875349,
                2280326.6311518727,
                489.15146755765954
              ],
              [
                -129119.85579875349,
                2279850.9711518725,
                489.15146755765954
              ],
              [
                -129612.69579875348,
                2279850.9711518725,
                8.431467557659516
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:37:01+00:00",
        "end_time": "2018-09-29T22:20:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0267.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0267.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0267.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0267.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.407752,
            70.47186829,
            8.431467558,
            -157.3941783,
            70.4764408,
            489.1514676
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.40711093254598,
                  70.47186829376287,
                  8.431467557659516
                ],
                [
                  -157.4077519676778,
                  70.47621018906854,
                  8.431467557659516
                ],
                [
                  -157.3948169176015,
                  70.47644079952691,
                  489.15146755765954
                ],
                [
                  -157.39417830719563,
                  70.47209885509517,
                  489.15146755765954
                ],
                [
                  -157.40711093254598,
                  70.47186829376287,
                  8.431467557659516
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0267.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0267.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:37:01Z",
            "pc:count": 4195080,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129379.5429,
                "count": 4195080,
                "maximum": -129119.8558,
                "minimum": -129612.6958,
                "name": "X",
                "position": 0,
                "stddev": 136.3169775,
                "variance": 18582.31835
              },
              {
                "average": 2280087.572,
                "count": 4195080,
                "maximum": 2280326.631,
                "minimum": 2279850.971,
                "name": "Y",
                "position": 1,
                "stddev": 129.569274,
                "variance": 16788.19677
              },
              {
                "average": 13.69499229,
                "count": 4195080,
                "maximum": 489.1514676,
                "minimum": 8.431467558,
                "name": "Z",
                "position": 2,
                "stddev": 4.349092548,
                "variance": 18.91460599
              },
              {
                "average": 36119.5475,
                "count": 4195080,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 15194.38906,
                "variance": 230869458.9
              },
              {
                "average": 1.000535866,
                "count": 4195080,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02314257547,
                "variance": 0.0005355787993
              },
              {
                "average": 1.001071732,
                "count": 4195080,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03271976916,
                "variance": 0.001070583294
              },
              {
                "average": 0.5004333648,
                "count": 4195080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998718,
                "variance": 0.2499998718
              },
              {
                "average": 0.0002822353805,
                "count": 4195080,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01679749359,
                "variance": 0.0002821557909
              },
              {
                "average": 3.022474422,
                "count": 4195080,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.28659341,
                "variance": 10.80169624
              },
              {
                "average": -0.0791029362,
                "count": 4195080,
                "maximum": 16.35000038,
                "minimum": -19.87199974,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.626357515,
                "variance": 92.666759
              },
              {
                "average": 0.4894712377,
                "count": 4195080,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998891925,
                "variance": 0.2498892047
              },
              {
                "average": 663.3796266,
                "count": 4195080,
                "maximum": 710,
                "minimum": 654,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.84501355,
                "variance": 355.1345356
              },
              {
                "average": 222295711.3,
                "count": 4195080,
                "maximum": 222299421.8,
                "minimum": 222294858.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1426.89466,
                "variance": 2036028.371
              },
              {
                "average": 0.4894712377,
                "count": 4195080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998891925,
                "variance": 0.2498892047
              },
              {
                "average": 0,
                "count": 4195080,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4195080,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4195080,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1491838058,
                "count": 4195080,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3562696004,
                "variance": 0.1269280281
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -129612.6958,
              2279850.971,
              8.431467558,
              -129119.8558,
              2280326.631,
              489.1514676
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -129612.69579875348,
                    2279850.9711518725,
                    8.431467557659516
                  ],
                  [
                    -129612.69579875348,
                    2280326.6311518727,
                    8.431467557659516
                  ],
                  [
                    -129119.85579875349,
                    2280326.6311518727,
                    489.15146755765954
                  ],
                  [
                    -129119.85579875349,
                    2279850.9711518725,
                    489.15146755765954
                  ],
                  [
                    -129612.69579875348,
                    2279850.9711518725,
                    8.431467557659516
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:37:01+00:00",
            "end_time": "2018-09-29T22:20:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1559.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8871219740985,
              71.23999856793186,
              2.02156663055365
            ],
            [
              -156.88768161759086,
              71.24434526816553,
              2.02156663055365
            ],
            [
              -156.87422711464967,
              71.24454259569929,
              863.2615666305537
            ],
            [
              -156.87367007216142,
              71.24019585151215,
              863.2615666305537
            ],
            [
              -156.8871219740985,
              71.23999856793186,
              2.02156663055365
            ]
          ]
        ]
      },
      "bbox": [
        -156.8876816,
        71.23999857,
        2.021566631,
        -156.8736701,
        71.2445426,
        863.2615666
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:27Z",
        "pc:count": 4315792,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105951.5054,
            "count": 4315792,
            "maximum": -105705.6548,
            "minimum": -106201.0948,
            "name": "X",
            "position": 0,
            "stddev": 136.4356795,
            "variance": 18614.69465
          },
          {
            "average": 2362921.065,
            "count": 4315792,
            "maximum": 2363152.421,
            "minimum": 2362678.681,
            "name": "Y",
            "position": 1,
            "stddev": 126.1172262,
            "variance": 15905.55474
          },
          {
            "average": 9.653653117,
            "count": 4315792,
            "maximum": 863.2615666,
            "minimum": 2.021566631,
            "name": "Z",
            "position": 2,
            "stddev": 1.534198338,
            "variance": 2.35376454
          },
          {
            "average": 46280.55543,
            "count": 4315792,
            "maximum": 65535,
            "minimum": 1659,
            "name": "Intensity",
            "position": 3,
            "stddev": 8394.806361,
            "variance": 70472773.83
          },
          {
            "average": 1.000000232,
            "count": 4315792,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004813597215,
            "variance": 2.317071814e-07
          },
          {
            "average": 1.000000463,
            "count": 4315792,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006807453676,
            "variance": 4.634142555e-07
          },
          {
            "average": 0.4954881978,
            "count": 4315792,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999797012,
            "variance": 0.2499797016
          },
          {
            "average": 0.0004490485176,
            "count": 4315792,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02118600899,
            "variance": 0.0004488469771
          },
          {
            "average": 1.263465895,
            "count": 4315792,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4782149898,
            "variance": 0.2286895765
          },
          {
            "average": 4.500207369,
            "count": 4315792,
            "maximum": 20.65800095,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.7852127,
            "variance": 116.320813
          },
          {
            "average": 0.5276141668,
            "count": 4315792,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992369333,
            "variance": 0.2492375155
          },
          {
            "average": 425.1169581,
            "count": 4315792,
            "maximum": 466,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.45857963,
            "variance": 598.2221174
          },
          {
            "average": 220500294.1,
            "count": 4315792,
            "maximum": 220726487.8,
            "minimum": 220416940.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 136818.9289,
            "variance": 18719419300.0
          },
          {
            "average": 0.5276141668,
            "count": 4315792,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992369333,
            "variance": 0.2492375155
          },
          {
            "average": 0,
            "count": 4315792,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4315792,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4315792,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2596774821,
            "count": 4315792,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4384576741,
            "variance": 0.192245132
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106201.0948,
          2362678.681,
          2.021566631,
          -105705.6548,
          2363152.421,
          863.2615666
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106201.09478472965,
                2362678.681370428,
                2.02156663055365
              ],
              [
                -106201.09478472965,
                2363152.421370428,
                2.02156663055365
              ],
              [
                -105705.65478472965,
                2363152.421370428,
                863.2615666305537
              ],
              [
                -105705.65478472965,
                2362678.681370428,
                863.2615666305537
              ],
              [
                -106201.09478472965,
                2362678.681370428,
                2.02156663055365
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:27+00:00",
        "end_time": "2018-09-08T04:42:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1559.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1559.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1559.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1559.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8876816,
            71.23999857,
            2.021566631,
            -156.8736701,
            71.2445426,
            863.2615666
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8871219740985,
                  71.23999856793186,
                  2.02156663055365
                ],
                [
                  -156.88768161759086,
                  71.24434526816553,
                  2.02156663055365
                ],
                [
                  -156.87422711464967,
                  71.24454259569929,
                  863.2615666305537
                ],
                [
                  -156.87367007216142,
                  71.24019585151215,
                  863.2615666305537
                ],
                [
                  -156.8871219740985,
                  71.23999856793186,
                  2.02156663055365
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1559.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1559.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:27Z",
            "pc:count": 4315792,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105951.5054,
                "count": 4315792,
                "maximum": -105705.6548,
                "minimum": -106201.0948,
                "name": "X",
                "position": 0,
                "stddev": 136.4356795,
                "variance": 18614.69465
              },
              {
                "average": 2362921.065,
                "count": 4315792,
                "maximum": 2363152.421,
                "minimum": 2362678.681,
                "name": "Y",
                "position": 1,
                "stddev": 126.1172262,
                "variance": 15905.55474
              },
              {
                "average": 9.653653117,
                "count": 4315792,
                "maximum": 863.2615666,
                "minimum": 2.021566631,
                "name": "Z",
                "position": 2,
                "stddev": 1.534198338,
                "variance": 2.35376454
              },
              {
                "average": 46280.55543,
                "count": 4315792,
                "maximum": 65535,
                "minimum": 1659,
                "name": "Intensity",
                "position": 3,
                "stddev": 8394.806361,
                "variance": 70472773.83
              },
              {
                "average": 1.000000232,
                "count": 4315792,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004813597215,
                "variance": 2.317071814e-07
              },
              {
                "average": 1.000000463,
                "count": 4315792,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006807453676,
                "variance": 4.634142555e-07
              },
              {
                "average": 0.4954881978,
                "count": 4315792,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999797012,
                "variance": 0.2499797016
              },
              {
                "average": 0.0004490485176,
                "count": 4315792,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02118600899,
                "variance": 0.0004488469771
              },
              {
                "average": 1.263465895,
                "count": 4315792,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4782149898,
                "variance": 0.2286895765
              },
              {
                "average": 4.500207369,
                "count": 4315792,
                "maximum": 20.65800095,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.7852127,
                "variance": 116.320813
              },
              {
                "average": 0.5276141668,
                "count": 4315792,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992369333,
                "variance": 0.2492375155
              },
              {
                "average": 425.1169581,
                "count": 4315792,
                "maximum": 466,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.45857963,
                "variance": 598.2221174
              },
              {
                "average": 220500294.1,
                "count": 4315792,
                "maximum": 220726487.8,
                "minimum": 220416940.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 136818.9289,
                "variance": 18719419300.0
              },
              {
                "average": 0.5276141668,
                "count": 4315792,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992369333,
                "variance": 0.2492375155
              },
              {
                "average": 0,
                "count": 4315792,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4315792,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4315792,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2596774821,
                "count": 4315792,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4384576741,
                "variance": 0.192245132
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106201.0948,
              2362678.681,
              2.021566631,
              -105705.6548,
              2363152.421,
              863.2615666
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106201.09478472965,
                    2362678.681370428,
                    2.02156663055365
                  ],
                  [
                    -106201.09478472965,
                    2363152.421370428,
                    2.02156663055365
                  ],
                  [
                    -105705.65478472965,
                    2363152.421370428,
                    863.2615666305537
                  ],
                  [
                    -105705.65478472965,
                    2362678.681370428,
                    863.2615666305537
                  ],
                  [
                    -106201.09478472965,
                    2362678.681370428,
                    2.02156663055365
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:27+00:00",
            "end_time": "2018-09-08T04:42:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1454.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83668823543542,
              71.23149638743817,
              5.392916099603845
            ],
            [
              -156.837237854083,
              71.23584261610591,
              5.392916099603845
            ],
            [
              -156.8237874662557,
              71.2360364876113,
              11.992916099603846
            ],
            [
              -156.82324044686766,
              71.23169021578568,
              11.992916099603846
            ],
            [
              -156.83668823543542,
              71.23149638743817,
              5.392916099603845
            ]
          ]
        ]
      },
      "bbox": [
        -156.8372379,
        71.23149639,
        5.3929161,
        -156.8232404,
        71.23603649,
        11.9929161
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:05Z",
        "pc:count": 4067324,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104143.071,
            "count": 4067324,
            "maximum": -103891.1304,
            "minimum": -104386.5904,
            "name": "X",
            "position": 0,
            "stddev": 135.3270027,
            "variance": 18313.39767
          },
          {
            "average": 2361908.768,
            "count": 4067324,
            "maximum": 2362147.475,
            "minimum": 2361673.775,
            "name": "Y",
            "position": 1,
            "stddev": 134.4310825,
            "variance": 18071.71594
          },
          {
            "average": 10.38253159,
            "count": 4067324,
            "maximum": 11.9929161,
            "minimum": 5.3929161,
            "name": "Z",
            "position": 2,
            "stddev": 0.8911245379,
            "variance": 0.7941029421
          },
          {
            "average": 44901.19287,
            "count": 4067324,
            "maximum": 65535,
            "minimum": 1659,
            "name": "Intensity",
            "position": 3,
            "stddev": 9582.080453,
            "variance": 91816265.8
          },
          {
            "average": 1,
            "count": 4067324,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4067324,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4993568253,
            "count": 4067324,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996478,
            "variance": 0.2499996478
          },
          {
            "average": 0.0005824468373,
            "count": 4067324,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02412690896,
            "variance": 0.0005821077361
          },
          {
            "average": 1.257859959,
            "count": 4067324,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4377599554,
            "variance": 0.1916337785
          },
          {
            "average": -0.3585540612,
            "count": 4067324,
            "maximum": 20.65200043,
            "minimum": -19.69799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97356411,
            "variance": 120.4191092
          },
          {
            "average": 0.4643920671,
            "count": 4067324,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987305247,
            "variance": 0.2487321363
          },
          {
            "average": 427.4995442,
            "count": 4067324,
            "maximum": 468,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.76216046,
            "variance": 473.5916277
          },
          {
            "average": 220491590.6,
            "count": 4067324,
            "maximum": 220727485.2,
            "minimum": 220419313,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129551.4404,
            "variance": 16783575700.0
          },
          {
            "average": 0.4643920671,
            "count": 4067324,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987305247,
            "variance": 0.2487321363
          },
          {
            "average": 0,
            "count": 4067324,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4067324,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4067324,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2513089687,
            "count": 4067324,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4337658553,
            "variance": 0.1881528172
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104386.5904,
          2361673.775,
          5.3929161,
          -103891.1304,
          2362147.475,
          11.9929161
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104386.59043542507,
                2361673.7754891664,
                5.392916099603845
              ],
              [
                -104386.59043542507,
                2362147.4754891666,
                5.392916099603845
              ],
              [
                -103891.13043542508,
                2362147.4754891666,
                11.992916099603846
              ],
              [
                -103891.13043542508,
                2361673.7754891664,
                11.992916099603846
              ],
              [
                -104386.59043542507,
                2361673.7754891664,
                5.392916099603845
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:05+00:00",
        "end_time": "2018-09-08T05:21:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1454.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1454.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1454.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1454.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8372379,
            71.23149639,
            5.3929161,
            -156.8232404,
            71.23603649,
            11.9929161
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83668823543542,
                  71.23149638743817,
                  5.392916099603845
                ],
                [
                  -156.837237854083,
                  71.23584261610591,
                  5.392916099603845
                ],
                [
                  -156.8237874662557,
                  71.2360364876113,
                  11.992916099603846
                ],
                [
                  -156.82324044686766,
                  71.23169021578568,
                  11.992916099603846
                ],
                [
                  -156.83668823543542,
                  71.23149638743817,
                  5.392916099603845
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1454.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1454.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:05Z",
            "pc:count": 4067324,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104143.071,
                "count": 4067324,
                "maximum": -103891.1304,
                "minimum": -104386.5904,
                "name": "X",
                "position": 0,
                "stddev": 135.3270027,
                "variance": 18313.39767
              },
              {
                "average": 2361908.768,
                "count": 4067324,
                "maximum": 2362147.475,
                "minimum": 2361673.775,
                "name": "Y",
                "position": 1,
                "stddev": 134.4310825,
                "variance": 18071.71594
              },
              {
                "average": 10.38253159,
                "count": 4067324,
                "maximum": 11.9929161,
                "minimum": 5.3929161,
                "name": "Z",
                "position": 2,
                "stddev": 0.8911245379,
                "variance": 0.7941029421
              },
              {
                "average": 44901.19287,
                "count": 4067324,
                "maximum": 65535,
                "minimum": 1659,
                "name": "Intensity",
                "position": 3,
                "stddev": 9582.080453,
                "variance": 91816265.8
              },
              {
                "average": 1,
                "count": 4067324,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4067324,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4993568253,
                "count": 4067324,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996478,
                "variance": 0.2499996478
              },
              {
                "average": 0.0005824468373,
                "count": 4067324,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02412690896,
                "variance": 0.0005821077361
              },
              {
                "average": 1.257859959,
                "count": 4067324,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4377599554,
                "variance": 0.1916337785
              },
              {
                "average": -0.3585540612,
                "count": 4067324,
                "maximum": 20.65200043,
                "minimum": -19.69799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97356411,
                "variance": 120.4191092
              },
              {
                "average": 0.4643920671,
                "count": 4067324,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987305247,
                "variance": 0.2487321363
              },
              {
                "average": 427.4995442,
                "count": 4067324,
                "maximum": 468,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.76216046,
                "variance": 473.5916277
              },
              {
                "average": 220491590.6,
                "count": 4067324,
                "maximum": 220727485.2,
                "minimum": 220419313,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129551.4404,
                "variance": 16783575700.0
              },
              {
                "average": 0.4643920671,
                "count": 4067324,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987305247,
                "variance": 0.2487321363
              },
              {
                "average": 0,
                "count": 4067324,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4067324,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4067324,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2513089687,
                "count": 4067324,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4337658553,
                "variance": 0.1881528172
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104386.5904,
              2361673.775,
              5.3929161,
              -103891.1304,
              2362147.475,
              11.9929161
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104386.59043542507,
                    2361673.7754891664,
                    5.392916099603845
                  ],
                  [
                    -104386.59043542507,
                    2362147.4754891666,
                    5.392916099603845
                  ],
                  [
                    -103891.13043542508,
                    2362147.4754891666,
                    11.992916099603846
                  ],
                  [
                    -103891.13043542508,
                    2361673.7754891664,
                    11.992916099603846
                  ],
                  [
                    -104386.59043542507,
                    2361673.7754891664,
                    5.392916099603845
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:05+00:00",
            "end_time": "2018-09-08T05:21:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0243.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.41947919355448,
              70.4678093391777,
              23.103658244124414
            ],
            [
              -157.42012246768417,
              70.47215127366754,
              23.103658244124414
            ],
            [
              -157.4071898137775,
              70.47238271677512,
              38.683658244124416
            ],
            [
              -157.4065489635309,
              70.46804073299252,
              38.683658244124416
            ],
            [
              -157.41947919355448,
              70.4678093391777,
              23.103658244124414
            ]
          ]
        ]
      },
      "bbox": [
        -157.4201225,
        70.46780934,
        23.10365824,
        -157.406549,
        70.47238272,
        38.68365824
      ],
      "properties": {
        "datetime": "2018-09-29T23:31:47Z",
        "pc:count": 5032220,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -129852.5659,
            "count": 5032220,
            "maximum": -129612.8077,
            "minimum": -130105.6477,
            "name": "X",
            "position": 0,
            "stddev": 131.9714522,
            "variance": 17416.46421
          },
          {
            "average": 2279670.677,
            "count": 5032220,
            "maximum": 2279907.333,
            "minimum": 2279431.653,
            "name": "Y",
            "position": 1,
            "stddev": 132.6068961,
            "variance": 17584.58889
          },
          {
            "average": 26.82156061,
            "count": 5032220,
            "maximum": 38.68365824,
            "minimum": 23.10365824,
            "name": "Z",
            "position": 2,
            "stddev": 1.431005635,
            "variance": 2.047777128
          },
          {
            "average": 41321.61091,
            "count": 5032220,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14897.15508,
            "variance": 221925229.6
          },
          {
            "average": 1.000356304,
            "count": 5032220,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0189671834,
            "variance": 0.0003597540463
          },
          {
            "average": 1.000713204,
            "count": 5032220,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02689658801,
            "variance": 0.0007234264468
          },
          {
            "average": 0.4943814062,
            "count": 5032220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999684801,
            "variance": 0.2499684811
          },
          {
            "average": 0.0003362333125,
            "count": 5032220,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01833358466,
            "variance": 0.0003361203265
          },
          {
            "average": 1.913081105,
            "count": 5032220,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.220667355,
            "variance": 4.931363502
          },
          {
            "average": 3.288148481,
            "count": 5032220,
            "maximum": 20.39999962,
            "minimum": -16.10400009,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.67670626,
            "variance": 113.9920566
          },
          {
            "average": 0.4974053201,
            "count": 5032220,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999933173,
            "variance": 0.2499933173
          },
          {
            "average": 667.8694246,
            "count": 5032220,
            "maximum": 709,
            "minimum": 656,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.66309181,
            "variance": 426.9633633
          },
          {
            "average": 222296157.8,
            "count": 5032220,
            "maximum": 222299107.4,
            "minimum": 222295194.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1436.602718,
            "variance": 2063827.37
          },
          {
            "average": 0.4974053201,
            "count": 5032220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999933173,
            "variance": 0.2499933173
          },
          {
            "average": 0,
            "count": 5032220,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5032220,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5032220,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2063425287,
            "count": 5032220,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.404679283,
            "variance": 0.1637653221
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -130105.6477,
          2279431.653,
          23.10365824,
          -129612.8077,
          2279907.333,
          38.68365824
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -130105.64768739174,
                2279431.653185113,
                23.103658244124414
              ],
              [
                -130105.64768739174,
                2279907.3331851126,
                23.103658244124414
              ],
              [
                -129612.80768739175,
                2279907.3331851126,
                38.683658244124416
              ],
              [
                -129612.80768739175,
                2279431.653185113,
                38.683658244124416
              ],
              [
                -130105.64768739174,
                2279431.653185113,
                23.103658244124414
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:31:47+00:00",
        "end_time": "2018-09-29T22:26:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0243.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0243.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0243.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0243.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4201225,
            70.46780934,
            23.10365824,
            -157.406549,
            70.47238272,
            38.68365824
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.41947919355448,
                  70.4678093391777,
                  23.103658244124414
                ],
                [
                  -157.42012246768417,
                  70.47215127366754,
                  23.103658244124414
                ],
                [
                  -157.4071898137775,
                  70.47238271677512,
                  38.683658244124416
                ],
                [
                  -157.4065489635309,
                  70.46804073299252,
                  38.683658244124416
                ],
                [
                  -157.41947919355448,
                  70.4678093391777,
                  23.103658244124414
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0243.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0243.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:31:47Z",
            "pc:count": 5032220,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -129852.5659,
                "count": 5032220,
                "maximum": -129612.8077,
                "minimum": -130105.6477,
                "name": "X",
                "position": 0,
                "stddev": 131.9714522,
                "variance": 17416.46421
              },
              {
                "average": 2279670.677,
                "count": 5032220,
                "maximum": 2279907.333,
                "minimum": 2279431.653,
                "name": "Y",
                "position": 1,
                "stddev": 132.6068961,
                "variance": 17584.58889
              },
              {
                "average": 26.82156061,
                "count": 5032220,
                "maximum": 38.68365824,
                "minimum": 23.10365824,
                "name": "Z",
                "position": 2,
                "stddev": 1.431005635,
                "variance": 2.047777128
              },
              {
                "average": 41321.61091,
                "count": 5032220,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14897.15508,
                "variance": 221925229.6
              },
              {
                "average": 1.000356304,
                "count": 5032220,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0189671834,
                "variance": 0.0003597540463
              },
              {
                "average": 1.000713204,
                "count": 5032220,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02689658801,
                "variance": 0.0007234264468
              },
              {
                "average": 0.4943814062,
                "count": 5032220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999684801,
                "variance": 0.2499684811
              },
              {
                "average": 0.0003362333125,
                "count": 5032220,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01833358466,
                "variance": 0.0003361203265
              },
              {
                "average": 1.913081105,
                "count": 5032220,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.220667355,
                "variance": 4.931363502
              },
              {
                "average": 3.288148481,
                "count": 5032220,
                "maximum": 20.39999962,
                "minimum": -16.10400009,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.67670626,
                "variance": 113.9920566
              },
              {
                "average": 0.4974053201,
                "count": 5032220,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999933173,
                "variance": 0.2499933173
              },
              {
                "average": 667.8694246,
                "count": 5032220,
                "maximum": 709,
                "minimum": 656,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.66309181,
                "variance": 426.9633633
              },
              {
                "average": 222296157.8,
                "count": 5032220,
                "maximum": 222299107.4,
                "minimum": 222295194.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1436.602718,
                "variance": 2063827.37
              },
              {
                "average": 0.4974053201,
                "count": 5032220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999933173,
                "variance": 0.2499933173
              },
              {
                "average": 0,
                "count": 5032220,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5032220,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5032220,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2063425287,
                "count": 5032220,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.404679283,
                "variance": 0.1637653221
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -130105.6477,
              2279431.653,
              23.10365824,
              -129612.8077,
              2279907.333,
              38.68365824
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -130105.64768739174,
                    2279431.653185113,
                    23.103658244124414
                  ],
                  [
                    -130105.64768739174,
                    2279907.3331851126,
                    23.103658244124414
                  ],
                  [
                    -129612.80768739175,
                    2279907.3331851126,
                    38.683658244124416
                  ],
                  [
                    -129612.80768739175,
                    2279431.653185113,
                    38.683658244124416
                  ],
                  [
                    -130105.64768739174,
                    2279431.653185113,
                    23.103658244124414
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:31:47+00:00",
            "end_time": "2018-09-29T22:26:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1560.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.87439209338794,
              71.23992316868492,
              10.539330558467308
            ],
            [
              -156.87494919839565,
              71.24426935236976,
              10.539330558467308
            ],
            [
              -156.86149028438504,
              71.24446587154834,
              42.19933055846731
            ],
            [
              -156.86093578096077,
              71.24011964409544,
              42.19933055846731
            ],
            [
              -156.87439209338794,
              71.23992316868492,
              10.539330558467308
            ]
          ]
        ]
      },
      "bbox": [
        -156.8749492,
        71.23992317,
        10.53933056,
        -156.8609358,
        71.24446587,
        42.19933056
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:35Z",
        "pc:count": 4417032,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105489.0728,
            "count": 4417032,
            "maximum": -105237.8819,
            "minimum": -105733.4819,
            "name": "X",
            "position": 0,
            "stddev": 136.2585429,
            "variance": 18566.3905
          },
          {
            "average": 2362891.995,
            "count": 4417032,
            "maximum": 2363123.847,
            "minimum": 2362650.167,
            "name": "Y",
            "position": 1,
            "stddev": 127.8948811,
            "variance": 16357.10062
          },
          {
            "average": 11.6881458,
            "count": 4417032,
            "maximum": 42.19933056,
            "minimum": 10.53933056,
            "name": "Z",
            "position": 2,
            "stddev": 0.3913808087,
            "variance": 0.1531789374
          },
          {
            "average": 47913.57028,
            "count": 4417032,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8922.465018,
            "variance": 79610382
          },
          {
            "average": 1.000002717,
            "count": 4417032,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001648256547,
            "variance": 2.716749644e-06
          },
          {
            "average": 1.000005434,
            "count": 4417032,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002330983597,
            "variance": 5.433484527e-06
          },
          {
            "average": 0.4938528858,
            "count": 4417032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999622682,
            "variance": 0.2499622696
          },
          {
            "average": 0.0004539247169,
            "count": 4417032,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02130067539,
            "variance": 0.0004537187719
          },
          {
            "average": 1.26386723,
            "count": 4417032,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4415985685,
            "variance": 0.1950092957
          },
          {
            "average": 3.225575921,
            "count": 4417032,
            "maximum": 20.62199974,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.90303008,
            "variance": 118.876065
          },
          {
            "average": 0.4857220867,
            "count": 4417032,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997961562,
            "variance": 0.2497961977
          },
          {
            "average": 425.022586,
            "count": 4417032,
            "maximum": 466,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.69278874,
            "variance": 561.3482382
          },
          {
            "average": 220496412.2,
            "count": 4417032,
            "maximum": 220726495,
            "minimum": 220416939.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 134343.4353,
            "variance": 18048158610.0
          },
          {
            "average": 0.4857220867,
            "count": 4417032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997961562,
            "variance": 0.2497961977
          },
          {
            "average": 0,
            "count": 4417032,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4417032,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4417032,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2256766535,
            "count": 4417032,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4180272014,
            "variance": 0.1747467411
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105733.4819,
          2362650.167,
          10.53933056,
          -105237.8819,
          2363123.847,
          42.19933056
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105733.48187939268,
                2362650.1669480316,
                10.539330558467308
              ],
              [
                -105733.48187939268,
                2363123.8469480313,
                10.539330558467308
              ],
              [
                -105237.88187939268,
                2363123.8469480313,
                42.19933055846731
              ],
              [
                -105237.88187939268,
                2362650.1669480316,
                42.19933055846731
              ],
              [
                -105733.48187939268,
                2362650.1669480316,
                10.539330558467308
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:35+00:00",
        "end_time": "2018-09-08T04:42:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1560.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1560.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1560.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1560.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8749492,
            71.23992317,
            10.53933056,
            -156.8609358,
            71.24446587,
            42.19933056
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.87439209338794,
                  71.23992316868492,
                  10.539330558467308
                ],
                [
                  -156.87494919839565,
                  71.24426935236976,
                  10.539330558467308
                ],
                [
                  -156.86149028438504,
                  71.24446587154834,
                  42.19933055846731
                ],
                [
                  -156.86093578096077,
                  71.24011964409544,
                  42.19933055846731
                ],
                [
                  -156.87439209338794,
                  71.23992316868492,
                  10.539330558467308
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1560.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1560.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:35Z",
            "pc:count": 4417032,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105489.0728,
                "count": 4417032,
                "maximum": -105237.8819,
                "minimum": -105733.4819,
                "name": "X",
                "position": 0,
                "stddev": 136.2585429,
                "variance": 18566.3905
              },
              {
                "average": 2362891.995,
                "count": 4417032,
                "maximum": 2363123.847,
                "minimum": 2362650.167,
                "name": "Y",
                "position": 1,
                "stddev": 127.8948811,
                "variance": 16357.10062
              },
              {
                "average": 11.6881458,
                "count": 4417032,
                "maximum": 42.19933056,
                "minimum": 10.53933056,
                "name": "Z",
                "position": 2,
                "stddev": 0.3913808087,
                "variance": 0.1531789374
              },
              {
                "average": 47913.57028,
                "count": 4417032,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8922.465018,
                "variance": 79610382
              },
              {
                "average": 1.000002717,
                "count": 4417032,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001648256547,
                "variance": 2.716749644e-06
              },
              {
                "average": 1.000005434,
                "count": 4417032,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002330983597,
                "variance": 5.433484527e-06
              },
              {
                "average": 0.4938528858,
                "count": 4417032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999622682,
                "variance": 0.2499622696
              },
              {
                "average": 0.0004539247169,
                "count": 4417032,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02130067539,
                "variance": 0.0004537187719
              },
              {
                "average": 1.26386723,
                "count": 4417032,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4415985685,
                "variance": 0.1950092957
              },
              {
                "average": 3.225575921,
                "count": 4417032,
                "maximum": 20.62199974,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.90303008,
                "variance": 118.876065
              },
              {
                "average": 0.4857220867,
                "count": 4417032,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997961562,
                "variance": 0.2497961977
              },
              {
                "average": 425.022586,
                "count": 4417032,
                "maximum": 466,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.69278874,
                "variance": 561.3482382
              },
              {
                "average": 220496412.2,
                "count": 4417032,
                "maximum": 220726495,
                "minimum": 220416939.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 134343.4353,
                "variance": 18048158610.0
              },
              {
                "average": 0.4857220867,
                "count": 4417032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997961562,
                "variance": 0.2497961977
              },
              {
                "average": 0,
                "count": 4417032,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4417032,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4417032,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2256766535,
                "count": 4417032,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4180272014,
                "variance": 0.1747467411
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105733.4819,
              2362650.167,
              10.53933056,
              -105237.8819,
              2363123.847,
              42.19933056
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105733.48187939268,
                    2362650.1669480316,
                    10.539330558467308
                  ],
                  [
                    -105733.48187939268,
                    2363123.8469480313,
                    10.539330558467308
                  ],
                  [
                    -105237.88187939268,
                    2363123.8469480313,
                    42.19933055846731
                  ],
                  [
                    -105237.88187939268,
                    2362650.1669480316,
                    42.19933055846731
                  ],
                  [
                    -105733.48187939268,
                    2362650.1669480316,
                    10.539330558467308
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:35+00:00",
            "end_time": "2018-09-08T04:42:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1455.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8239633391901,
              71.2314164854829,
              10.08483767320172
            ],
            [
              -156.82451065362537,
              71.23576403189003,
              10.08483767320172
            ],
            [
              -156.81105857460952,
              71.23595705540271,
              12.344837673201722
            ],
            [
              -156.81051386058334,
              71.23160946601368,
              12.344837673201722
            ],
            [
              -156.8239633391901,
              71.2314164854829,
              10.08483767320172
            ]
          ]
        ]
      },
      "bbox": [
        -156.8245107,
        71.23141649,
        10.08483767,
        -156.8105139,
        71.23595706,
        12.34483767
      ],
      "properties": {
        "datetime": "2018-09-11T18:58:12Z",
        "pc:count": 3921094,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103674.6662,
            "count": 3921094,
            "maximum": -103423.4629,
            "minimum": -103918.9829,
            "name": "X",
            "position": 0,
            "stddev": 135.8400313,
            "variance": 18452.5141
          },
          {
            "average": 2361884.688,
            "count": 3921094,
            "maximum": 2362118.966,
            "minimum": 2361645.126,
            "name": "Y",
            "position": 1,
            "stddev": 133.4840734,
            "variance": 17817.99786
          },
          {
            "average": 11.50525171,
            "count": 3921094,
            "maximum": 12.34483767,
            "minimum": 10.08483767,
            "name": "Z",
            "position": 2,
            "stddev": 0.2819811896,
            "variance": 0.0795133913
          },
          {
            "average": 39649.92726,
            "count": 3921094,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12341.87792,
            "variance": 152321950.7
          },
          {
            "average": 1,
            "count": 3921094,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3921094,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5019866904,
            "count": 3921094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999961168,
            "variance": 0.2499961168
          },
          {
            "average": 0.000595497073,
            "count": 3921094,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02439554484,
            "variance": 0.000595142608
          },
          {
            "average": 1.280927211,
            "count": 3921094,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6036657948,
            "variance": 0.3644123918
          },
          {
            "average": 1.397664798,
            "count": 3921094,
            "maximum": 20.61000061,
            "minimum": -19.84199905,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.18571728,
            "variance": 125.1202712
          },
          {
            "average": 0.5356655566,
            "count": 3921094,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987264095,
            "variance": 0.2487280315
          },
          {
            "average": 427.9585876,
            "count": 3921094,
            "maximum": 468,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.24740756,
            "variance": 451.4523281
          },
          {
            "average": 220490629.1,
            "count": 3921094,
            "maximum": 220727492,
            "minimum": 220420214.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128486.2915,
            "variance": 16508727110.0
          },
          {
            "average": 0.5356655566,
            "count": 3921094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987264095,
            "variance": 0.2487280315
          },
          {
            "average": 0,
            "count": 3921094,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3921094,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3921094,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2877778498,
            "count": 3921094,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4527270825,
            "variance": 0.2049618112
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103918.9829,
          2361645.126,
          10.08483767,
          -103423.4629,
          2362118.966,
          12.34483767
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103918.98288639383,
                2361645.126090248,
                10.08483767320172
              ],
              [
                -103918.98288639383,
                2362118.966090248,
                10.08483767320172
              ],
              [
                -103423.46288639384,
                2362118.966090248,
                12.344837673201722
              ],
              [
                -103423.46288639384,
                2361645.126090248,
                12.344837673201722
              ],
              [
                -103918.98288639383,
                2361645.126090248,
                10.08483767320172
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:58:12+00:00",
        "end_time": "2018-09-08T05:36:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1455.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1455.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1455.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1455.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8245107,
            71.23141649,
            10.08483767,
            -156.8105139,
            71.23595706,
            12.34483767
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8239633391901,
                  71.2314164854829,
                  10.08483767320172
                ],
                [
                  -156.82451065362537,
                  71.23576403189003,
                  10.08483767320172
                ],
                [
                  -156.81105857460952,
                  71.23595705540271,
                  12.344837673201722
                ],
                [
                  -156.81051386058334,
                  71.23160946601368,
                  12.344837673201722
                ],
                [
                  -156.8239633391901,
                  71.2314164854829,
                  10.08483767320172
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1455.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1455.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:58:12Z",
            "pc:count": 3921094,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103674.6662,
                "count": 3921094,
                "maximum": -103423.4629,
                "minimum": -103918.9829,
                "name": "X",
                "position": 0,
                "stddev": 135.8400313,
                "variance": 18452.5141
              },
              {
                "average": 2361884.688,
                "count": 3921094,
                "maximum": 2362118.966,
                "minimum": 2361645.126,
                "name": "Y",
                "position": 1,
                "stddev": 133.4840734,
                "variance": 17817.99786
              },
              {
                "average": 11.50525171,
                "count": 3921094,
                "maximum": 12.34483767,
                "minimum": 10.08483767,
                "name": "Z",
                "position": 2,
                "stddev": 0.2819811896,
                "variance": 0.0795133913
              },
              {
                "average": 39649.92726,
                "count": 3921094,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12341.87792,
                "variance": 152321950.7
              },
              {
                "average": 1,
                "count": 3921094,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3921094,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5019866904,
                "count": 3921094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999961168,
                "variance": 0.2499961168
              },
              {
                "average": 0.000595497073,
                "count": 3921094,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02439554484,
                "variance": 0.000595142608
              },
              {
                "average": 1.280927211,
                "count": 3921094,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6036657948,
                "variance": 0.3644123918
              },
              {
                "average": 1.397664798,
                "count": 3921094,
                "maximum": 20.61000061,
                "minimum": -19.84199905,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.18571728,
                "variance": 125.1202712
              },
              {
                "average": 0.5356655566,
                "count": 3921094,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987264095,
                "variance": 0.2487280315
              },
              {
                "average": 427.9585876,
                "count": 3921094,
                "maximum": 468,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.24740756,
                "variance": 451.4523281
              },
              {
                "average": 220490629.1,
                "count": 3921094,
                "maximum": 220727492,
                "minimum": 220420214.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128486.2915,
                "variance": 16508727110.0
              },
              {
                "average": 0.5356655566,
                "count": 3921094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987264095,
                "variance": 0.2487280315
              },
              {
                "average": 0,
                "count": 3921094,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3921094,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3921094,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2877778498,
                "count": 3921094,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4527270825,
                "variance": 0.2049618112
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103918.9829,
              2361645.126,
              10.08483767,
              -103423.4629,
              2362118.966,
              12.34483767
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103918.98288639383,
                    2361645.126090248,
                    10.08483767320172
                  ],
                  [
                    -103918.98288639383,
                    2362118.966090248,
                    10.08483767320172
                  ],
                  [
                    -103423.46288639384,
                    2362118.966090248,
                    12.344837673201722
                  ],
                  [
                    -103423.46288639384,
                    2361645.126090248,
                    12.344837673201722
                  ],
                  [
                    -103918.98288639383,
                    2361645.126090248,
                    10.08483767320172
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:58:12+00:00",
            "end_time": "2018-09-08T05:36:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1721.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8736771310945,
              71.25221429889407,
              0.957313504696073
            ],
            [
              -156.8742344264035,
              71.25656102577047,
              0.957313504696073
            ],
            [
              -156.8607724771581,
              71.25675744864289,
              12.417313504696075
            ],
            [
              -156.86021778555872,
              71.25241067798346,
              12.417313504696075
            ],
            [
              -156.8736771310945,
              71.25221429889407,
              0.957313504696073
            ]
          ]
        ]
      },
      "bbox": [
        -156.8742344,
        71.2522143,
        0.9573135047,
        -156.8602178,
        71.25675745,
        12.4173135
      ],
      "properties": {
        "datetime": "2018-09-08T04:45:39Z",
        "pc:count": 2907693,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105395.4952,
            "count": 2907693,
            "maximum": -105153.8675,
            "minimum": -105649.3075,
            "name": "X",
            "position": 0,
            "stddev": 132.3744631,
            "variance": 17522.99849
          },
          {
            "average": 2364221.465,
            "count": 2907693,
            "maximum": 2364459.766,
            "minimum": 2363986.066,
            "name": "Y",
            "position": 1,
            "stddev": 127.1145176,
            "variance": 16158.1006
          },
          {
            "average": 8.146888993,
            "count": 2907693,
            "maximum": 12.4173135,
            "minimum": 0.9573135047,
            "name": "Z",
            "position": 2,
            "stddev": 3.26445247,
            "variance": 10.65664993
          },
          {
            "average": 42189.65033,
            "count": 2907693,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13344.332,
            "variance": 178071196.5
          },
          {
            "average": 1,
            "count": 2907693,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2907693,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.503644642,
            "count": 2907693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999868024,
            "variance": 0.2499868026
          },
          {
            "average": 0.0003886242461,
            "count": 2907693,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01970972732,
            "variance": 0.0003884733509
          },
          {
            "average": 1.737315459,
            "count": 2907693,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.812456493,
            "variance": 3.284998539
          },
          {
            "average": 0.7729953251,
            "count": 2907693,
            "maximum": 16.32600021,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.24443008,
            "variance": 104.9483476
          },
          {
            "average": 0.5215485266,
            "count": 2907693,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995355311,
            "variance": 0.2495357468
          },
          {
            "average": 408.3881135,
            "count": 2907693,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9531737487,
            "variance": 0.9085401953
          },
          {
            "average": 220416396.6,
            "count": 2907693,
            "maximum": 220417139.6,
            "minimum": 220415768.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 541.7646649,
            "variance": 293508.9522
          },
          {
            "average": 0.5215485266,
            "count": 2907693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995355311,
            "variance": 0.2495357468
          },
          {
            "average": 0,
            "count": 2907693,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2907693,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2907693,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.233895394,
            "count": 2907693,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4233065087,
            "variance": 0.1791884003
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105649.3075,
          2363986.066,
          0.9573135047,
          -105153.8675,
          2364459.766,
          12.4173135
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105649.30749800615,
                2363986.066161037,
                0.957313504696073
              ],
              [
                -105649.30749800615,
                2364459.766161037,
                0.957313504696073
              ],
              [
                -105153.86749800615,
                2364459.766161037,
                12.417313504696075
              ],
              [
                -105153.86749800615,
                2363986.066161037,
                12.417313504696075
              ],
              [
                -105649.30749800615,
                2363986.066161037,
                0.957313504696073
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:45:39+00:00",
        "end_time": "2018-09-08T04:22:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1721.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1721.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1721.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1721.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8742344,
            71.2522143,
            0.9573135047,
            -156.8602178,
            71.25675745,
            12.4173135
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8736771310945,
                  71.25221429889407,
                  0.957313504696073
                ],
                [
                  -156.8742344264035,
                  71.25656102577047,
                  0.957313504696073
                ],
                [
                  -156.8607724771581,
                  71.25675744864289,
                  12.417313504696075
                ],
                [
                  -156.86021778555872,
                  71.25241067798346,
                  12.417313504696075
                ],
                [
                  -156.8736771310945,
                  71.25221429889407,
                  0.957313504696073
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1721.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1721.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:45:39Z",
            "pc:count": 2907693,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105395.4952,
                "count": 2907693,
                "maximum": -105153.8675,
                "minimum": -105649.3075,
                "name": "X",
                "position": 0,
                "stddev": 132.3744631,
                "variance": 17522.99849
              },
              {
                "average": 2364221.465,
                "count": 2907693,
                "maximum": 2364459.766,
                "minimum": 2363986.066,
                "name": "Y",
                "position": 1,
                "stddev": 127.1145176,
                "variance": 16158.1006
              },
              {
                "average": 8.146888993,
                "count": 2907693,
                "maximum": 12.4173135,
                "minimum": 0.9573135047,
                "name": "Z",
                "position": 2,
                "stddev": 3.26445247,
                "variance": 10.65664993
              },
              {
                "average": 42189.65033,
                "count": 2907693,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13344.332,
                "variance": 178071196.5
              },
              {
                "average": 1,
                "count": 2907693,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2907693,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.503644642,
                "count": 2907693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999868024,
                "variance": 0.2499868026
              },
              {
                "average": 0.0003886242461,
                "count": 2907693,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01970972732,
                "variance": 0.0003884733509
              },
              {
                "average": 1.737315459,
                "count": 2907693,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.812456493,
                "variance": 3.284998539
              },
              {
                "average": 0.7729953251,
                "count": 2907693,
                "maximum": 16.32600021,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.24443008,
                "variance": 104.9483476
              },
              {
                "average": 0.5215485266,
                "count": 2907693,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995355311,
                "variance": 0.2495357468
              },
              {
                "average": 408.3881135,
                "count": 2907693,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9531737487,
                "variance": 0.9085401953
              },
              {
                "average": 220416396.6,
                "count": 2907693,
                "maximum": 220417139.6,
                "minimum": 220415768.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 541.7646649,
                "variance": 293508.9522
              },
              {
                "average": 0.5215485266,
                "count": 2907693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995355311,
                "variance": 0.2495357468
              },
              {
                "average": 0,
                "count": 2907693,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2907693,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2907693,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.233895394,
                "count": 2907693,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4233065087,
                "variance": 0.1791884003
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105649.3075,
              2363986.066,
              0.9573135047,
              -105153.8675,
              2364459.766,
              12.4173135
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105649.30749800615,
                    2363986.066161037,
                    0.957313504696073
                  ],
                  [
                    -105649.30749800615,
                    2364459.766161037,
                    0.957313504696073
                  ],
                  [
                    -105153.86749800615,
                    2364459.766161037,
                    12.417313504696075
                  ],
                  [
                    -105153.86749800615,
                    2363986.066161037,
                    12.417313504696075
                  ],
                  [
                    -105649.30749800615,
                    2363986.066161037,
                    0.957313504696073
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:45:39+00:00",
            "end_time": "2018-09-08T04:22:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0216.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4685799091725,
              70.46386087831033,
              20.128684574353247
            ],
            [
              -157.46923235516726,
              70.46820291231714,
              20.128684574353247
            ],
            [
              -157.45630555415582,
              70.46843761972586,
              27.90868457435325
            ],
            [
              -157.45565553045765,
              70.4640955357409,
              27.90868457435325
            ],
            [
              -157.4685799091725,
              70.46386087831033,
              20.128684574353247
            ]
          ]
        ]
      },
      "bbox": [
        -157.4692324,
        70.46386088,
        20.12868457,
        -157.4556555,
        70.46843762,
        27.90868457
      ],
      "properties": {
        "datetime": "2018-09-29T23:17:48Z",
        "pc:count": 5077664,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131749.9342,
            "count": 5077664,
            "maximum": -131501.9966,
            "minimum": -131994.7166,
            "name": "X",
            "position": 0,
            "stddev": 131.7472768,
            "variance": 17357.34494
          },
          {
            "average": 2279336.069,
            "count": 5077664,
            "maximum": 2279572.835,
            "minimum": 2279097.115,
            "name": "Y",
            "position": 1,
            "stddev": 121.0836262,
            "variance": 14661.24452
          },
          {
            "average": 25.708912,
            "count": 5077664,
            "maximum": 27.90868457,
            "minimum": 20.12868457,
            "name": "Z",
            "position": 2,
            "stddev": 1.695745283,
            "variance": 2.875552065
          },
          {
            "average": 44639.73307,
            "count": 5077664,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 12220.81262,
            "variance": 149348261
          },
          {
            "average": 1.000003742,
            "count": 5077664,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001934390056,
            "variance": 3.74186489e-06
          },
          {
            "average": 1.000007484,
            "count": 5077664,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002735635534,
            "variance": 7.483701777e-06
          },
          {
            "average": 0.5053353274,
            "count": 5077664,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999715827,
            "variance": 0.2499715835
          },
          {
            "average": 0.0002906848504,
            "count": 5077664,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01704700589,
            "variance": 0.0002906004099
          },
          {
            "average": 1.625691854,
            "count": 5077664,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.77030976,
            "variance": 3.133996648
          },
          {
            "average": -1.865038819,
            "count": 5077664,
            "maximum": 16.48200035,
            "minimum": -19.77599907,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61363482,
            "variance": 112.6492441
          },
          {
            "average": 0.5084261188,
            "count": 5077664,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999290447,
            "variance": 0.2499290497
          },
          {
            "average": 667.8671793,
            "count": 5077664,
            "maximum": 706,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.4481641,
            "variance": 340.3347588
          },
          {
            "average": 222296157.2,
            "count": 5077664,
            "maximum": 222298268.8,
            "minimum": 222295387.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 972.7377575,
            "variance": 946218.7448
          },
          {
            "average": 0.5084261188,
            "count": 5077664,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999290447,
            "variance": 0.2499290497
          },
          {
            "average": 0,
            "count": 5077664,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5077664,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5077664,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2065731407,
            "count": 5077664,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4048465271,
            "variance": 0.1639007105
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131994.7166,
          2279097.115,
          20.12868457,
          -131501.9966,
          2279572.835,
          27.90868457
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131994.71660065564,
                2279097.115323519,
                20.128684574353247
              ],
              [
                -131994.71660065564,
                2279572.8353235186,
                20.128684574353247
              ],
              [
                -131501.99660065566,
                2279572.8353235186,
                27.90868457435325
              ],
              [
                -131501.99660065566,
                2279097.115323519,
                27.90868457435325
              ],
              [
                -131994.71660065564,
                2279097.115323519,
                20.128684574353247
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:17:48+00:00",
        "end_time": "2018-09-29T22:29:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0216.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0216.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0216.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0216.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4692324,
            70.46386088,
            20.12868457,
            -157.4556555,
            70.46843762,
            27.90868457
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4685799091725,
                  70.46386087831033,
                  20.128684574353247
                ],
                [
                  -157.46923235516726,
                  70.46820291231714,
                  20.128684574353247
                ],
                [
                  -157.45630555415582,
                  70.46843761972586,
                  27.90868457435325
                ],
                [
                  -157.45565553045765,
                  70.4640955357409,
                  27.90868457435325
                ],
                [
                  -157.4685799091725,
                  70.46386087831033,
                  20.128684574353247
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0216.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0216.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:17:48Z",
            "pc:count": 5077664,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131749.9342,
                "count": 5077664,
                "maximum": -131501.9966,
                "minimum": -131994.7166,
                "name": "X",
                "position": 0,
                "stddev": 131.7472768,
                "variance": 17357.34494
              },
              {
                "average": 2279336.069,
                "count": 5077664,
                "maximum": 2279572.835,
                "minimum": 2279097.115,
                "name": "Y",
                "position": 1,
                "stddev": 121.0836262,
                "variance": 14661.24452
              },
              {
                "average": 25.708912,
                "count": 5077664,
                "maximum": 27.90868457,
                "minimum": 20.12868457,
                "name": "Z",
                "position": 2,
                "stddev": 1.695745283,
                "variance": 2.875552065
              },
              {
                "average": 44639.73307,
                "count": 5077664,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 12220.81262,
                "variance": 149348261
              },
              {
                "average": 1.000003742,
                "count": 5077664,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001934390056,
                "variance": 3.74186489e-06
              },
              {
                "average": 1.000007484,
                "count": 5077664,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002735635534,
                "variance": 7.483701777e-06
              },
              {
                "average": 0.5053353274,
                "count": 5077664,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999715827,
                "variance": 0.2499715835
              },
              {
                "average": 0.0002906848504,
                "count": 5077664,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01704700589,
                "variance": 0.0002906004099
              },
              {
                "average": 1.625691854,
                "count": 5077664,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.77030976,
                "variance": 3.133996648
              },
              {
                "average": -1.865038819,
                "count": 5077664,
                "maximum": 16.48200035,
                "minimum": -19.77599907,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61363482,
                "variance": 112.6492441
              },
              {
                "average": 0.5084261188,
                "count": 5077664,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999290447,
                "variance": 0.2499290497
              },
              {
                "average": 667.8671793,
                "count": 5077664,
                "maximum": 706,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.4481641,
                "variance": 340.3347588
              },
              {
                "average": 222296157.2,
                "count": 5077664,
                "maximum": 222298268.8,
                "minimum": 222295387.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 972.7377575,
                "variance": 946218.7448
              },
              {
                "average": 0.5084261188,
                "count": 5077664,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999290447,
                "variance": 0.2499290497
              },
              {
                "average": 0,
                "count": 5077664,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5077664,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5077664,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2065731407,
                "count": 5077664,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4048465271,
                "variance": 0.1639007105
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131994.7166,
              2279097.115,
              20.12868457,
              -131501.9966,
              2279572.835,
              27.90868457
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131994.71660065564,
                    2279097.115323519,
                    20.128684574353247
                  ],
                  [
                    -131994.71660065564,
                    2279572.8353235186,
                    20.128684574353247
                  ],
                  [
                    -131501.99660065566,
                    2279572.8353235186,
                    27.90868457435325
                  ],
                  [
                    -131501.99660065566,
                    2279097.115323519,
                    27.90868457435325
                  ],
                  [
                    -131994.71660065564,
                    2279097.115323519,
                    20.128684574353247
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:17:48+00:00",
            "end_time": "2018-09-29T22:29:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1672.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8229725567573,
              71.24780451933347,
              10.228761750711017
            ],
            [
              -156.82352005591437,
              71.25215236139812,
              10.228761750711017
            ],
            [
              -156.81005487981176,
              71.25234538453246,
              15.108761750711016
            ],
            [
              -156.809509985392,
              71.2479974994425,
              15.108761750711016
            ],
            [
              -156.8229725567573,
              71.24780451933347,
              10.228761750711017
            ]
          ]
        ]
      },
      "bbox": [
        -156.8235201,
        71.24780452,
        10.22876175,
        -156.80951,
        71.25234538,
        15.10876175
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:05Z",
        "pc:count": 3669019,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103562.5493,
            "count": 3669019,
            "maximum": -103311.0753,
            "minimum": -103806.7153,
            "name": "X",
            "position": 0,
            "stddev": 133.8586697,
            "variance": 17918.14344
          },
          {
            "average": 2363656.639,
            "count": 3669019,
            "maximum": 2363900.233,
            "minimum": 2363426.413,
            "name": "Y",
            "position": 1,
            "stddev": 128.6599666,
            "variance": 16553.387
          },
          {
            "average": 12.70706462,
            "count": 3669019,
            "maximum": 15.10876175,
            "minimum": 10.22876175,
            "name": "Z",
            "position": 2,
            "stddev": 1.102665759,
            "variance": 1.215871775
          },
          {
            "average": 47525.49977,
            "count": 3669019,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 9940.451945,
            "variance": 98812584.87
          },
          {
            "average": 1,
            "count": 3669019,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3669019,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5017736349,
            "count": 3669019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999969223,
            "variance": 0.2499969224
          },
          {
            "average": 0.0005429244166,
            "count": 3669019,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02329441559,
            "variance": 0.0005426297976
          },
          {
            "average": 1.281945937,
            "count": 3669019,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4510742859,
            "variance": 0.2034680114
          },
          {
            "average": 0.5103359015,
            "count": 3669019,
            "maximum": 16.42200089,
            "minimum": -19.75799942,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.51583382,
            "variance": 132.6144286
          },
          {
            "average": 0.5134244331,
            "count": 3669019,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998198202,
            "variance": 0.2498198527
          },
          {
            "average": 417.1539826,
            "count": 3669019,
            "maximum": 465,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.27424846,
            "variance": 203.7541692
          },
          {
            "average": 220443898.8,
            "count": 3669019,
            "maximum": 220726285.8,
            "minimum": 220418020.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 84060.37421,
            "variance": 7066146513
          },
          {
            "average": 0.5134244331,
            "count": 3669019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998198202,
            "variance": 0.2498198527
          },
          {
            "average": 0,
            "count": 3669019,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3669019,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3669019,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2843667476,
            "count": 3669019,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.451112354,
            "variance": 0.2035023559
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103806.7153,
          2363426.413,
          10.22876175,
          -103311.0753,
          2363900.233,
          15.10876175
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103806.71533205768,
                2363426.412690933,
                10.228761750711017
              ],
              [
                -103806.71533205768,
                2363900.232690933,
                10.228761750711017
              ],
              [
                -103311.07533205766,
                2363900.232690933,
                15.108761750711016
              ],
              [
                -103311.07533205766,
                2363426.412690933,
                15.108761750711016
              ],
              [
                -103806.71533205768,
                2363426.412690933,
                10.228761750711017
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:05+00:00",
        "end_time": "2018-09-08T05:00:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1672.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1672.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1672.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1672.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8235201,
            71.24780452,
            10.22876175,
            -156.80951,
            71.25234538,
            15.10876175
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8229725567573,
                  71.24780451933347,
                  10.228761750711017
                ],
                [
                  -156.82352005591437,
                  71.25215236139812,
                  10.228761750711017
                ],
                [
                  -156.81005487981176,
                  71.25234538453246,
                  15.108761750711016
                ],
                [
                  -156.809509985392,
                  71.2479974994425,
                  15.108761750711016
                ],
                [
                  -156.8229725567573,
                  71.24780451933347,
                  10.228761750711017
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1672.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1672.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:05Z",
            "pc:count": 3669019,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103562.5493,
                "count": 3669019,
                "maximum": -103311.0753,
                "minimum": -103806.7153,
                "name": "X",
                "position": 0,
                "stddev": 133.8586697,
                "variance": 17918.14344
              },
              {
                "average": 2363656.639,
                "count": 3669019,
                "maximum": 2363900.233,
                "minimum": 2363426.413,
                "name": "Y",
                "position": 1,
                "stddev": 128.6599666,
                "variance": 16553.387
              },
              {
                "average": 12.70706462,
                "count": 3669019,
                "maximum": 15.10876175,
                "minimum": 10.22876175,
                "name": "Z",
                "position": 2,
                "stddev": 1.102665759,
                "variance": 1.215871775
              },
              {
                "average": 47525.49977,
                "count": 3669019,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 9940.451945,
                "variance": 98812584.87
              },
              {
                "average": 1,
                "count": 3669019,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3669019,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5017736349,
                "count": 3669019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999969223,
                "variance": 0.2499969224
              },
              {
                "average": 0.0005429244166,
                "count": 3669019,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02329441559,
                "variance": 0.0005426297976
              },
              {
                "average": 1.281945937,
                "count": 3669019,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4510742859,
                "variance": 0.2034680114
              },
              {
                "average": 0.5103359015,
                "count": 3669019,
                "maximum": 16.42200089,
                "minimum": -19.75799942,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.51583382,
                "variance": 132.6144286
              },
              {
                "average": 0.5134244331,
                "count": 3669019,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998198202,
                "variance": 0.2498198527
              },
              {
                "average": 417.1539826,
                "count": 3669019,
                "maximum": 465,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.27424846,
                "variance": 203.7541692
              },
              {
                "average": 220443898.8,
                "count": 3669019,
                "maximum": 220726285.8,
                "minimum": 220418020.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 84060.37421,
                "variance": 7066146513
              },
              {
                "average": 0.5134244331,
                "count": 3669019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998198202,
                "variance": 0.2498198527
              },
              {
                "average": 0,
                "count": 3669019,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3669019,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3669019,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2843667476,
                "count": 3669019,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.451112354,
                "variance": 0.2035023559
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103806.7153,
              2363426.413,
              10.22876175,
              -103311.0753,
              2363900.233,
              15.10876175
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103806.71533205768,
                    2363426.412690933,
                    10.228761750711017
                  ],
                  [
                    -103806.71533205768,
                    2363900.232690933,
                    10.228761750711017
                  ],
                  [
                    -103311.07533205766,
                    2363900.232690933,
                    15.108761750711016
                  ],
                  [
                    -103311.07533205766,
                    2363426.412690933,
                    15.108761750711016
                  ],
                  [
                    -103806.71533205768,
                    2363426.412690933,
                    10.228761750711017
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:05+00:00",
            "end_time": "2018-09-08T05:00:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1728.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78450730222357,
              71.25165930974178,
              9.290024985068577
            ],
            [
              -156.78504730167165,
              71.25600626928485,
              9.290024985068577
            ],
            [
              -156.77162513405455,
              71.25619601861945,
              18.190024985068575
            ],
            [
              -156.77108773100292,
              71.25184901677996,
              18.190024985068575
            ],
            [
              -156.78450730222357,
              71.25165930974178,
              9.290024985068577
            ]
          ]
        ]
      },
      "bbox": [
        -156.7850473,
        71.25165931,
        9.290024985,
        -156.7710877,
        71.25619602,
        18.19002499
      ],
      "properties": {
        "datetime": "2018-09-11T18:26:19Z",
        "pc:count": 2780202,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102118.9663,
            "count": 2780202,
            "maximum": -101881.5481,
            "minimum": -102375.5081,
            "name": "X",
            "position": 0,
            "stddev": 139.5946201,
            "variance": 19486.65797
          },
          {
            "average": 2364016.007,
            "count": 2780202,
            "maximum": 2364259.738,
            "minimum": 2363786.038,
            "name": "Y",
            "position": 1,
            "stddev": 130.0898716,
            "variance": 16923.37469
          },
          {
            "average": 9.644846185,
            "count": 2780202,
            "maximum": 18.19002499,
            "minimum": 9.290024985,
            "name": "Z",
            "position": 2,
            "stddev": 0.1327904598,
            "variance": 0.01763330621
          },
          {
            "average": 34832.22521,
            "count": 2780202,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11322.89991,
            "variance": 128208062.4
          },
          {
            "average": 1.000000719,
            "count": 2780202,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008481579633,
            "variance": 7.193719308e-07
          },
          {
            "average": 1.000001439,
            "count": 2780202,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001199476063,
            "variance": 1.438742827e-06
          },
          {
            "average": 0.5007348387,
            "count": 2780202,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995499,
            "variance": 0.2499995499
          },
          {
            "average": 0.0003963740764,
            "count": 2780202,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.019905203,
            "variance": 0.0003962171065
          },
          {
            "average": 1.349646536,
            "count": 2780202,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9311547176,
            "variance": 0.8670491082
          },
          {
            "average": 2.318088335,
            "count": 2780202,
            "maximum": 20.61000061,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73840489,
            "variance": 115.3133396
          },
          {
            "average": 0.5295036116,
            "count": 2780202,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991288676,
            "variance": 0.2491296265
          },
          {
            "average": 418.2112185,
            "count": 2780202,
            "maximum": 464,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 12.94169711,
            "variance": 167.4875242
          },
          {
            "average": 220442330.3,
            "count": 2780202,
            "maximum": 220725579.9,
            "minimum": 220419097.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 79836.93032,
            "variance": 6373935443
          },
          {
            "average": 0.5295036116,
            "count": 2780202,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991288676,
            "variance": 0.2491296265
          },
          {
            "average": 0,
            "count": 2780202,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2780202,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2780202,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2551652722,
            "count": 2780202,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.435954154,
            "variance": 0.1900560244
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102375.5081,
          2363786.038,
          9.290024985,
          -101881.5481,
          2364259.738,
          18.19002499
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102375.50809087417,
                2363786.037665972,
                9.290024985068577
              ],
              [
                -102375.50809087417,
                2364259.737665972,
                9.290024985068577
              ],
              [
                -101881.54809087417,
                2364259.737665972,
                18.190024985068575
              ],
              [
                -101881.54809087417,
                2363786.037665972,
                18.190024985068575
              ],
              [
                -102375.50809087417,
                2363786.037665972,
                9.290024985068577
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:26:19+00:00",
        "end_time": "2018-09-08T05:18:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1728.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1728.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1728.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1728.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7850473,
            71.25165931,
            9.290024985,
            -156.7710877,
            71.25619602,
            18.19002499
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78450730222357,
                  71.25165930974178,
                  9.290024985068577
                ],
                [
                  -156.78504730167165,
                  71.25600626928485,
                  9.290024985068577
                ],
                [
                  -156.77162513405455,
                  71.25619601861945,
                  18.190024985068575
                ],
                [
                  -156.77108773100292,
                  71.25184901677996,
                  18.190024985068575
                ],
                [
                  -156.78450730222357,
                  71.25165930974178,
                  9.290024985068577
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1728.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1728.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:26:19Z",
            "pc:count": 2780202,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102118.9663,
                "count": 2780202,
                "maximum": -101881.5481,
                "minimum": -102375.5081,
                "name": "X",
                "position": 0,
                "stddev": 139.5946201,
                "variance": 19486.65797
              },
              {
                "average": 2364016.007,
                "count": 2780202,
                "maximum": 2364259.738,
                "minimum": 2363786.038,
                "name": "Y",
                "position": 1,
                "stddev": 130.0898716,
                "variance": 16923.37469
              },
              {
                "average": 9.644846185,
                "count": 2780202,
                "maximum": 18.19002499,
                "minimum": 9.290024985,
                "name": "Z",
                "position": 2,
                "stddev": 0.1327904598,
                "variance": 0.01763330621
              },
              {
                "average": 34832.22521,
                "count": 2780202,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11322.89991,
                "variance": 128208062.4
              },
              {
                "average": 1.000000719,
                "count": 2780202,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008481579633,
                "variance": 7.193719308e-07
              },
              {
                "average": 1.000001439,
                "count": 2780202,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001199476063,
                "variance": 1.438742827e-06
              },
              {
                "average": 0.5007348387,
                "count": 2780202,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995499,
                "variance": 0.2499995499
              },
              {
                "average": 0.0003963740764,
                "count": 2780202,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.019905203,
                "variance": 0.0003962171065
              },
              {
                "average": 1.349646536,
                "count": 2780202,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9311547176,
                "variance": 0.8670491082
              },
              {
                "average": 2.318088335,
                "count": 2780202,
                "maximum": 20.61000061,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73840489,
                "variance": 115.3133396
              },
              {
                "average": 0.5295036116,
                "count": 2780202,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991288676,
                "variance": 0.2491296265
              },
              {
                "average": 418.2112185,
                "count": 2780202,
                "maximum": 464,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 12.94169711,
                "variance": 167.4875242
              },
              {
                "average": 220442330.3,
                "count": 2780202,
                "maximum": 220725579.9,
                "minimum": 220419097.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 79836.93032,
                "variance": 6373935443
              },
              {
                "average": 0.5295036116,
                "count": 2780202,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991288676,
                "variance": 0.2491296265
              },
              {
                "average": 0,
                "count": 2780202,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2780202,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2780202,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2551652722,
                "count": 2780202,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.435954154,
                "variance": 0.1900560244
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102375.5081,
              2363786.038,
              9.290024985,
              -101881.5481,
              2364259.738,
              18.19002499
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102375.50809087417,
                    2363786.037665972,
                    9.290024985068577
                  ],
                  [
                    -102375.50809087417,
                    2364259.737665972,
                    9.290024985068577
                  ],
                  [
                    -101881.54809087417,
                    2364259.737665972,
                    18.190024985068575
                  ],
                  [
                    -101881.54809087417,
                    2363786.037665972,
                    18.190024985068575
                  ],
                  [
                    -102375.50809087417,
                    2363786.037665972,
                    9.290024985068577
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:26:19+00:00",
            "end_time": "2018-09-08T05:18:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1566.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79800781017286,
              71.23945071720341,
              9.428494415369263
            ],
            [
              -156.7985500164961,
              71.24379636674973,
              9.428494415369263
            ],
            [
              -156.78508964124458,
              71.2439876692621,
              12.188494415369265
            ],
            [
              -156.78455003667642,
              71.23964197711595,
              12.188494415369265
            ],
            [
              -156.79800781017286,
              71.23945071720341,
              9.428494415369263
            ]
          ]
        ]
      },
      "bbox": [
        -156.79855,
        71.23945072,
        9.428494415,
        -156.78455,
        71.24398767,
        12.18849442
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:15Z",
        "pc:count": 3657590,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102696.3407,
            "count": 3657590,
            "maximum": -102431.9256,
            "minimum": -102927.5656,
            "name": "X",
            "position": 0,
            "stddev": 125.7267853,
            "variance": 15807.22454
          },
          {
            "average": 2362714.432,
            "count": 3657590,
            "maximum": 2362952.372,
            "minimum": 2362478.772,
            "name": "Y",
            "position": 1,
            "stddev": 128.3633849,
            "variance": 16477.15859
          },
          {
            "average": 10.32880367,
            "count": 3657590,
            "maximum": 12.18849442,
            "minimum": 9.428494415,
            "name": "Z",
            "position": 2,
            "stddev": 0.3628299339,
            "variance": 0.1316455609
          },
          {
            "average": 35702.70216,
            "count": 3657590,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14310.78799,
            "variance": 204798653
          },
          {
            "average": 1.000000273,
            "count": 3657590,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005228805524,
            "variance": 2.734040721e-07
          },
          {
            "average": 1.000000547,
            "count": 3657590,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007394646676,
            "variance": 5.468079947e-07
          },
          {
            "average": 0.4967202448,
            "count": 3657590,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999893114,
            "variance": 0.2499893116
          },
          {
            "average": 0.0005317709202,
            "count": 3657590,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0230540297,
            "variance": 0.0005314882852
          },
          {
            "average": 1.764771885,
            "count": 3657590,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.011769543,
            "variance": 4.047216693
          },
          {
            "average": 3.985834112,
            "count": 3657590,
            "maximum": 20.71199989,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72058605,
            "variance": 114.9309653
          },
          {
            "average": 0.5256923275,
            "count": 3657590,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993395363,
            "variance": 0.2493399725
          },
          {
            "average": 429.3902192,
            "count": 3657590,
            "maximum": 466,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.73636296,
            "variance": 472.4694745
          },
          {
            "average": 220501737.8,
            "count": 3657590,
            "maximum": 220726535.8,
            "minimum": 220420192.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 134838.8923,
            "variance": 18181526870.0
          },
          {
            "average": 0.5256923275,
            "count": 3657590,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993395363,
            "variance": 0.2493399725
          },
          {
            "average": 0,
            "count": 3657590,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3657590,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3657590,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.255644017,
            "count": 3657590,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.436222656,
            "variance": 0.1902902056
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102927.5656,
          2362478.772,
          9.428494415,
          -102431.9256,
          2362952.372,
          12.18849442
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102927.56563346303,
                2362478.771617109,
                9.428494415369263
              ],
              [
                -102927.56563346303,
                2362952.3716171086,
                9.428494415369263
              ],
              [
                -102431.92563346302,
                2362952.3716171086,
                12.188494415369265
              ],
              [
                -102431.92563346302,
                2362478.771617109,
                12.188494415369265
              ],
              [
                -102927.56563346303,
                2362478.771617109,
                9.428494415369263
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:15+00:00",
        "end_time": "2018-09-08T05:36:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1566.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1566.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1566.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1566.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.79855,
            71.23945072,
            9.428494415,
            -156.78455,
            71.24398767,
            12.18849442
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79800781017286,
                  71.23945071720341,
                  9.428494415369263
                ],
                [
                  -156.7985500164961,
                  71.24379636674973,
                  9.428494415369263
                ],
                [
                  -156.78508964124458,
                  71.2439876692621,
                  12.188494415369265
                ],
                [
                  -156.78455003667642,
                  71.23964197711595,
                  12.188494415369265
                ],
                [
                  -156.79800781017286,
                  71.23945071720341,
                  9.428494415369263
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1566.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1566.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:15Z",
            "pc:count": 3657590,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102696.3407,
                "count": 3657590,
                "maximum": -102431.9256,
                "minimum": -102927.5656,
                "name": "X",
                "position": 0,
                "stddev": 125.7267853,
                "variance": 15807.22454
              },
              {
                "average": 2362714.432,
                "count": 3657590,
                "maximum": 2362952.372,
                "minimum": 2362478.772,
                "name": "Y",
                "position": 1,
                "stddev": 128.3633849,
                "variance": 16477.15859
              },
              {
                "average": 10.32880367,
                "count": 3657590,
                "maximum": 12.18849442,
                "minimum": 9.428494415,
                "name": "Z",
                "position": 2,
                "stddev": 0.3628299339,
                "variance": 0.1316455609
              },
              {
                "average": 35702.70216,
                "count": 3657590,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14310.78799,
                "variance": 204798653
              },
              {
                "average": 1.000000273,
                "count": 3657590,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005228805524,
                "variance": 2.734040721e-07
              },
              {
                "average": 1.000000547,
                "count": 3657590,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007394646676,
                "variance": 5.468079947e-07
              },
              {
                "average": 0.4967202448,
                "count": 3657590,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999893114,
                "variance": 0.2499893116
              },
              {
                "average": 0.0005317709202,
                "count": 3657590,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0230540297,
                "variance": 0.0005314882852
              },
              {
                "average": 1.764771885,
                "count": 3657590,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.011769543,
                "variance": 4.047216693
              },
              {
                "average": 3.985834112,
                "count": 3657590,
                "maximum": 20.71199989,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72058605,
                "variance": 114.9309653
              },
              {
                "average": 0.5256923275,
                "count": 3657590,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993395363,
                "variance": 0.2493399725
              },
              {
                "average": 429.3902192,
                "count": 3657590,
                "maximum": 466,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.73636296,
                "variance": 472.4694745
              },
              {
                "average": 220501737.8,
                "count": 3657590,
                "maximum": 220726535.8,
                "minimum": 220420192.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 134838.8923,
                "variance": 18181526870.0
              },
              {
                "average": 0.5256923275,
                "count": 3657590,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993395363,
                "variance": 0.2493399725
              },
              {
                "average": 0,
                "count": 3657590,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3657590,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3657590,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.255644017,
                "count": 3657590,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.436222656,
                "variance": 0.1902902056
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102927.5656,
              2362478.772,
              9.428494415,
              -102431.9256,
              2362952.372,
              12.18849442
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102927.56563346303,
                    2362478.771617109,
                    9.428494415369263
                  ],
                  [
                    -102927.56563346303,
                    2362952.3716171086,
                    9.428494415369263
                  ],
                  [
                    -102431.92563346302,
                    2362952.3716171086,
                    12.188494415369265
                  ],
                  [
                    -102431.92563346302,
                    2362478.771617109,
                    12.188494415369265
                  ],
                  [
                    -102927.56563346303,
                    2362478.771617109,
                    9.428494415369263
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:15+00:00",
            "end_time": "2018-09-08T05:36:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1722.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.86094208044267,
              71.25213781485664,
              1.997612476823852
            ],
            [
              -156.86149697595886,
              71.25648512610198,
              1.997612476823852
            ],
            [
              -156.84802898337014,
              71.25668076352999,
              11.837612476823852
            ],
            [
              -156.8474766931182,
              71.25233340867102,
              11.837612476823852
            ],
            [
              -156.86094208044267,
              71.25213781485664,
              1.997612476823852
            ]
          ]
        ]
      },
      "bbox": [
        -156.861497,
        71.25213781,
        1.997612477,
        -156.8474767,
        71.25668076,
        11.83761248
      ],
      "properties": {
        "datetime": "2018-09-08T05:00:42Z",
        "pc:count": 3176369,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104934.8034,
            "count": 3176369,
            "maximum": -104686.0986,
            "minimum": -105181.7586,
            "name": "X",
            "position": 0,
            "stddev": 131.7056318,
            "variance": 17346.37345
          },
          {
            "average": 2364199.336,
            "count": 3176369,
            "maximum": 2364431.292,
            "minimum": 2363957.532,
            "name": "Y",
            "position": 1,
            "stddev": 128.4782515,
            "variance": 16506.66111
          },
          {
            "average": 8.549304764,
            "count": 3176369,
            "maximum": 11.83761248,
            "minimum": 1.997612477,
            "name": "Z",
            "position": 2,
            "stddev": 2.396051661,
            "variance": 5.741063564
          },
          {
            "average": 46469.37552,
            "count": 3176369,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7963.952665,
            "variance": 63424542.06
          },
          {
            "average": 1,
            "count": 3176369,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3176369,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4979528512,
            "count": 3176369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958879,
            "variance": 0.2499958879
          },
          {
            "average": 0.0004259580672,
            "count": 3176369,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02063435875,
            "variance": 0.000425776761
          },
          {
            "average": 1.404868263,
            "count": 3176369,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.00598986,
            "variance": 1.012015598
          },
          {
            "average": -0.06775287339,
            "count": 3176369,
            "maximum": 16.33799934,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.02824149,
            "variance": 100.5656273
          },
          {
            "average": 0.4578876069,
            "count": 3176369,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4982234684,
            "variance": 0.2482266245
          },
          {
            "average": 409.3696822,
            "count": 3176369,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9209103075,
            "variance": 0.8480757945
          },
          {
            "average": 220416943.1,
            "count": 3176369,
            "maximum": 220418042.8,
            "minimum": 220416000.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 565.4619565,
            "variance": 319747.2242
          },
          {
            "average": 0.4578876069,
            "count": 3176369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4982234684,
            "variance": 0.2482266245
          },
          {
            "average": 0,
            "count": 3176369,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3176369,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3176369,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2038557233,
            "count": 3176369,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4028630269,
            "variance": 0.1622986185
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105181.7586,
          2363957.532,
          1.997612477,
          -104686.0986,
          2364431.292,
          11.83761248
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105181.75864963442,
                2363957.5318931118,
                1.997612476823852
              ],
              [
                -105181.75864963442,
                2364431.2918931115,
                1.997612476823852
              ],
              [
                -104686.09864963441,
                2364431.2918931115,
                11.837612476823852
              ],
              [
                -104686.09864963441,
                2363957.5318931118,
                11.837612476823852
              ],
              [
                -105181.75864963442,
                2363957.5318931118,
                1.997612476823852
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:00:42+00:00",
        "end_time": "2018-09-08T04:26:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1722.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1722.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1722.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1722.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.861497,
            71.25213781,
            1.997612477,
            -156.8474767,
            71.25668076,
            11.83761248
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.86094208044267,
                  71.25213781485664,
                  1.997612476823852
                ],
                [
                  -156.86149697595886,
                  71.25648512610198,
                  1.997612476823852
                ],
                [
                  -156.84802898337014,
                  71.25668076352999,
                  11.837612476823852
                ],
                [
                  -156.8474766931182,
                  71.25233340867102,
                  11.837612476823852
                ],
                [
                  -156.86094208044267,
                  71.25213781485664,
                  1.997612476823852
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1722.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1722.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:00:42Z",
            "pc:count": 3176369,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104934.8034,
                "count": 3176369,
                "maximum": -104686.0986,
                "minimum": -105181.7586,
                "name": "X",
                "position": 0,
                "stddev": 131.7056318,
                "variance": 17346.37345
              },
              {
                "average": 2364199.336,
                "count": 3176369,
                "maximum": 2364431.292,
                "minimum": 2363957.532,
                "name": "Y",
                "position": 1,
                "stddev": 128.4782515,
                "variance": 16506.66111
              },
              {
                "average": 8.549304764,
                "count": 3176369,
                "maximum": 11.83761248,
                "minimum": 1.997612477,
                "name": "Z",
                "position": 2,
                "stddev": 2.396051661,
                "variance": 5.741063564
              },
              {
                "average": 46469.37552,
                "count": 3176369,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7963.952665,
                "variance": 63424542.06
              },
              {
                "average": 1,
                "count": 3176369,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3176369,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4979528512,
                "count": 3176369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958879,
                "variance": 0.2499958879
              },
              {
                "average": 0.0004259580672,
                "count": 3176369,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02063435875,
                "variance": 0.000425776761
              },
              {
                "average": 1.404868263,
                "count": 3176369,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.00598986,
                "variance": 1.012015598
              },
              {
                "average": -0.06775287339,
                "count": 3176369,
                "maximum": 16.33799934,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.02824149,
                "variance": 100.5656273
              },
              {
                "average": 0.4578876069,
                "count": 3176369,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4982234684,
                "variance": 0.2482266245
              },
              {
                "average": 409.3696822,
                "count": 3176369,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9209103075,
                "variance": 0.8480757945
              },
              {
                "average": 220416943.1,
                "count": 3176369,
                "maximum": 220418042.8,
                "minimum": 220416000.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 565.4619565,
                "variance": 319747.2242
              },
              {
                "average": 0.4578876069,
                "count": 3176369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4982234684,
                "variance": 0.2482266245
              },
              {
                "average": 0,
                "count": 3176369,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3176369,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3176369,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2038557233,
                "count": 3176369,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4028630269,
                "variance": 0.1622986185
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105181.7586,
              2363957.532,
              1.997612477,
              -104686.0986,
              2364431.292,
              11.83761248
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105181.75864963442,
                    2363957.5318931118,
                    1.997612476823852
                  ],
                  [
                    -105181.75864963442,
                    2364431.2918931115,
                    1.997612476823852
                  ],
                  [
                    -104686.09864963441,
                    2364431.2918931115,
                    11.837612476823852
                  ],
                  [
                    -104686.09864963441,
                    2363957.5318931118,
                    11.837612476823852
                  ],
                  [
                    -105181.75864963442,
                    2363957.5318931118,
                    1.997612476823852
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:00:42+00:00",
            "end_time": "2018-09-08T04:26:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1561.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8616621395854,
              71.239847169984,
              1.950043481075762
            ],
            [
              -156.86221677696926,
              71.24419338746821,
              1.950043481075762
            ],
            [
              -156.8487572543764,
              71.24438904258456,
              11.570043481075764
            ],
            [
              -156.8482052187495,
              71.2400427815246,
              11.570043481075764
            ],
            [
              -156.8616621395854,
              71.239847169984,
              1.950043481075762
            ]
          ]
        ]
      },
      "bbox": [
        -156.8622168,
        71.23984717,
        1.950043481,
        -156.8482052,
        71.24438904,
        11.57004348
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:41Z",
        "pc:count": 3533357,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105044.3208,
            "count": 3533357,
            "maximum": -104770.2421,
            "minimum": -105265.8621,
            "name": "X",
            "position": 0,
            "stddev": 135.1808875,
            "variance": 18273.87235
          },
          {
            "average": 2362860.376,
            "count": 3533357,
            "maximum": 2363095.357,
            "minimum": 2362621.677,
            "name": "Y",
            "position": 1,
            "stddev": 127.1755198,
            "variance": 16173.61284
          },
          {
            "average": 7.415475995,
            "count": 3533357,
            "maximum": 11.57004348,
            "minimum": 1.950043481,
            "name": "Z",
            "position": 2,
            "stddev": 2.776957288,
            "variance": 7.711491779
          },
          {
            "average": 47312.53607,
            "count": 3533357,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10175.63517,
            "variance": 103543551
          },
          {
            "average": 1,
            "count": 3533357,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3533357,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4944739521,
            "count": 3533357,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999695326,
            "variance": 0.2499695335
          },
          {
            "average": 0.0005012230578,
            "count": 3533357,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02238240325,
            "variance": 0.0005009719751
          },
          {
            "average": 1.604021049,
            "count": 3533357,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.723653178,
            "variance": 2.970980278
          },
          {
            "average": 3.783330933,
            "count": 3533357,
            "maximum": 20.57999992,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.92541675,
            "variance": 119.3647312
          },
          {
            "average": 0.5024035216,
            "count": 3533357,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999942938,
            "variance": 0.2499942938
          },
          {
            "average": 426.6858291,
            "count": 3533357,
            "maximum": 466,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.87090507,
            "variance": 569.8201086
          },
          {
            "average": 220502723.7,
            "count": 3533357,
            "maximum": 220726501.9,
            "minimum": 220417121,
            "name": "GpsTime",
            "position": 12,
            "stddev": 137262.8604,
            "variance": 18841092860.0
          },
          {
            "average": 0.5024035216,
            "count": 3533357,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999942938,
            "variance": 0.2499942938
          },
          {
            "average": 0,
            "count": 3533357,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3533357,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3533357,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2524217055,
            "count": 3533357,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4344019354,
            "variance": 0.1887050415
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105265.8621,
          2362621.677,
          1.950043481,
          -104770.2421,
          2363095.357,
          11.57004348
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105265.8620695706,
                2362621.6767595196,
                1.950043481075762
              ],
              [
                -105265.8620695706,
                2363095.3567595193,
                1.950043481075762
              ],
              [
                -104770.24206957061,
                2363095.3567595193,
                11.570043481075764
              ],
              [
                -104770.24206957061,
                2362621.6767595196,
                11.570043481075764
              ],
              [
                -105265.8620695706,
                2362621.6767595196,
                1.950043481075762
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:41+00:00",
        "end_time": "2018-09-08T04:45:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1561.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1561.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1561.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1561.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8622168,
            71.23984717,
            1.950043481,
            -156.8482052,
            71.24438904,
            11.57004348
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8616621395854,
                  71.239847169984,
                  1.950043481075762
                ],
                [
                  -156.86221677696926,
                  71.24419338746821,
                  1.950043481075762
                ],
                [
                  -156.8487572543764,
                  71.24438904258456,
                  11.570043481075764
                ],
                [
                  -156.8482052187495,
                  71.2400427815246,
                  11.570043481075764
                ],
                [
                  -156.8616621395854,
                  71.239847169984,
                  1.950043481075762
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1561.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1561.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:41Z",
            "pc:count": 3533357,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105044.3208,
                "count": 3533357,
                "maximum": -104770.2421,
                "minimum": -105265.8621,
                "name": "X",
                "position": 0,
                "stddev": 135.1808875,
                "variance": 18273.87235
              },
              {
                "average": 2362860.376,
                "count": 3533357,
                "maximum": 2363095.357,
                "minimum": 2362621.677,
                "name": "Y",
                "position": 1,
                "stddev": 127.1755198,
                "variance": 16173.61284
              },
              {
                "average": 7.415475995,
                "count": 3533357,
                "maximum": 11.57004348,
                "minimum": 1.950043481,
                "name": "Z",
                "position": 2,
                "stddev": 2.776957288,
                "variance": 7.711491779
              },
              {
                "average": 47312.53607,
                "count": 3533357,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10175.63517,
                "variance": 103543551
              },
              {
                "average": 1,
                "count": 3533357,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3533357,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4944739521,
                "count": 3533357,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999695326,
                "variance": 0.2499695335
              },
              {
                "average": 0.0005012230578,
                "count": 3533357,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02238240325,
                "variance": 0.0005009719751
              },
              {
                "average": 1.604021049,
                "count": 3533357,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.723653178,
                "variance": 2.970980278
              },
              {
                "average": 3.783330933,
                "count": 3533357,
                "maximum": 20.57999992,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.92541675,
                "variance": 119.3647312
              },
              {
                "average": 0.5024035216,
                "count": 3533357,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999942938,
                "variance": 0.2499942938
              },
              {
                "average": 426.6858291,
                "count": 3533357,
                "maximum": 466,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.87090507,
                "variance": 569.8201086
              },
              {
                "average": 220502723.7,
                "count": 3533357,
                "maximum": 220726501.9,
                "minimum": 220417121,
                "name": "GpsTime",
                "position": 12,
                "stddev": 137262.8604,
                "variance": 18841092860.0
              },
              {
                "average": 0.5024035216,
                "count": 3533357,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999942938,
                "variance": 0.2499942938
              },
              {
                "average": 0,
                "count": 3533357,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3533357,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3533357,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2524217055,
                "count": 3533357,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4344019354,
                "variance": 0.1887050415
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105265.8621,
              2362621.677,
              1.950043481,
              -104770.2421,
              2363095.357,
              11.57004348
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105265.8620695706,
                    2362621.6767595196,
                    1.950043481075762
                  ],
                  [
                    -105265.8620695706,
                    2363095.3567595193,
                    1.950043481075762
                  ],
                  [
                    -104770.24206957061,
                    2363095.3567595193,
                    11.570043481075764
                  ],
                  [
                    -104770.24206957061,
                    2362621.6767595196,
                    11.570043481075764
                  ],
                  [
                    -105265.8620695706,
                    2362621.6767595196,
                    1.950043481075762
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:41+00:00",
            "end_time": "2018-09-08T04:45:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1567.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7852768150158,
              71.23936754033609,
              9.454567692016619
            ],
            [
              -156.78581675891567,
              71.2437148741887,
              9.454567692016619
            ],
            [
              -156.77235904029197,
              71.2439052662622,
              9.994567692016618
            ],
            [
              -156.7718216986756,
              71.23955788999633,
              9.994567692016618
            ],
            [
              -156.7852768150158,
              71.23936754033609,
              9.454567692016619
            ]
          ]
        ]
      },
      "bbox": [
        -156.7858168,
        71.23936754,
        9.454567692,
        -156.7718217,
        71.24390527,
        9.994567692
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:21Z",
        "pc:count": 1945859,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102205.0275,
            "count": 1945859,
            "maximum": -101964.358,
            "minimum": -102459.898,
            "name": "X",
            "position": 0,
            "stddev": 135.389188,
            "variance": 18330.23222
          },
          {
            "average": 2362679.673,
            "count": 1945859,
            "maximum": 2362923.816,
            "minimum": 2362450.036,
            "name": "Y",
            "position": 1,
            "stddev": 128.665664,
            "variance": 16554.8531
          },
          {
            "average": 9.668944453,
            "count": 1945859,
            "maximum": 9.994567692,
            "minimum": 9.454567692,
            "name": "Z",
            "position": 2,
            "stddev": 0.03866353213,
            "variance": 0.001494868717
          },
          {
            "average": 21536.97688,
            "count": 1945859,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 17376.14451,
            "variance": 301930398.1
          },
          {
            "average": 1,
            "count": 1945859,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1945859,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4889049001,
            "count": 1945859,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499877012,
            "variance": 0.2498770272
          },
          {
            "average": 0.0008690249396,
            "count": 1945859,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02946642465,
            "variance": 0.0008682701815
          },
          {
            "average": 8.38691344,
            "count": 1945859,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.660776521,
            "variance": 2.758178652
          },
          {
            "average": 4.909308335,
            "count": 1945859,
            "maximum": 20.60400009,
            "minimum": -15.98400021,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.90677352,
            "variance": 34.88997342
          },
          {
            "average": 0.4865845881,
            "count": 1945859,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998201228,
            "variance": 0.2498201551
          },
          {
            "average": 430.6346935,
            "count": 1945859,
            "maximum": 466,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.592124,
            "variance": 466.2198189
          },
          {
            "average": 220505588.4,
            "count": 1945859,
            "maximum": 220726541.9,
            "minimum": 220420191.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 136399.2669,
            "variance": 18604760020.0
          },
          {
            "average": 0.4865845881,
            "count": 1945859,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998201228,
            "variance": 0.2498201551
          },
          {
            "average": 0,
            "count": 1945859,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1945859,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1945859,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02228167611,
            "count": 1945859,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1475981511,
            "variance": 0.02178521422
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102459.898,
          2362450.036,
          9.454567692,
          -101964.358,
          2362923.816,
          9.994567692
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102459.8979992114,
                2362450.036319423,
                9.454567692016619
              ],
              [
                -102459.8979992114,
                2362923.8163194233,
                9.454567692016619
              ],
              [
                -101964.3579992114,
                2362923.8163194233,
                9.994567692016618
              ],
              [
                -101964.3579992114,
                2362450.036319423,
                9.994567692016618
              ],
              [
                -102459.8979992114,
                2362450.036319423,
                9.454567692016619
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:21+00:00",
        "end_time": "2018-09-08T05:36:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1567.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1567.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1567.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1567.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7858168,
            71.23936754,
            9.454567692,
            -156.7718217,
            71.24390527,
            9.994567692
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7852768150158,
                  71.23936754033609,
                  9.454567692016619
                ],
                [
                  -156.78581675891567,
                  71.2437148741887,
                  9.454567692016619
                ],
                [
                  -156.77235904029197,
                  71.2439052662622,
                  9.994567692016618
                ],
                [
                  -156.7718216986756,
                  71.23955788999633,
                  9.994567692016618
                ],
                [
                  -156.7852768150158,
                  71.23936754033609,
                  9.454567692016619
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1567.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1567.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:21Z",
            "pc:count": 1945859,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102205.0275,
                "count": 1945859,
                "maximum": -101964.358,
                "minimum": -102459.898,
                "name": "X",
                "position": 0,
                "stddev": 135.389188,
                "variance": 18330.23222
              },
              {
                "average": 2362679.673,
                "count": 1945859,
                "maximum": 2362923.816,
                "minimum": 2362450.036,
                "name": "Y",
                "position": 1,
                "stddev": 128.665664,
                "variance": 16554.8531
              },
              {
                "average": 9.668944453,
                "count": 1945859,
                "maximum": 9.994567692,
                "minimum": 9.454567692,
                "name": "Z",
                "position": 2,
                "stddev": 0.03866353213,
                "variance": 0.001494868717
              },
              {
                "average": 21536.97688,
                "count": 1945859,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 17376.14451,
                "variance": 301930398.1
              },
              {
                "average": 1,
                "count": 1945859,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1945859,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4889049001,
                "count": 1945859,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499877012,
                "variance": 0.2498770272
              },
              {
                "average": 0.0008690249396,
                "count": 1945859,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02946642465,
                "variance": 0.0008682701815
              },
              {
                "average": 8.38691344,
                "count": 1945859,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.660776521,
                "variance": 2.758178652
              },
              {
                "average": 4.909308335,
                "count": 1945859,
                "maximum": 20.60400009,
                "minimum": -15.98400021,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.90677352,
                "variance": 34.88997342
              },
              {
                "average": 0.4865845881,
                "count": 1945859,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998201228,
                "variance": 0.2498201551
              },
              {
                "average": 430.6346935,
                "count": 1945859,
                "maximum": 466,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.592124,
                "variance": 466.2198189
              },
              {
                "average": 220505588.4,
                "count": 1945859,
                "maximum": 220726541.9,
                "minimum": 220420191.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 136399.2669,
                "variance": 18604760020.0
              },
              {
                "average": 0.4865845881,
                "count": 1945859,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998201228,
                "variance": 0.2498201551
              },
              {
                "average": 0,
                "count": 1945859,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1945859,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1945859,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02228167611,
                "count": 1945859,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1475981511,
                "variance": 0.02178521422
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102459.898,
              2362450.036,
              9.454567692,
              -101964.358,
              2362923.816,
              9.994567692
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102459.8979992114,
                    2362450.036319423,
                    9.454567692016619
                  ],
                  [
                    -102459.8979992114,
                    2362923.8163194233,
                    9.454567692016619
                  ],
                  [
                    -101964.3579992114,
                    2362923.8163194233,
                    9.994567692016618
                  ],
                  [
                    -101964.3579992114,
                    2362450.036319423,
                    9.994567692016618
                  ],
                  [
                    -102459.8979992114,
                    2362450.036319423,
                    9.454567692016619
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:21+00:00",
            "end_time": "2018-09-08T05:36:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180929_B18_NSB6_0217.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -157.4563345755094,
              70.46382487000619,
              23.56637843237702
            ],
            [
              -157.4569846918688,
              70.4681667623493,
              23.56637843237702
            ],
            [
              -157.44405463878886,
              70.46840069715718,
              31.686378432377026
            ],
            [
              -157.44340694529984,
              70.46405875500216,
              31.686378432377026
            ],
            [
              -157.4563345755094,
              70.46382487000619,
              23.56637843237702
            ]
          ]
        ]
      },
      "bbox": [
        -157.4569847,
        70.46382487,
        23.56637843,
        -157.4434069,
        70.4684007,
        31.68637843
      ],
      "properties": {
        "datetime": "2018-09-29T23:21:56Z",
        "pc:count": 5528023,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -131266.6974,
            "count": 5528023,
            "maximum": -131036.5143,
            "minimum": -131529.3543,
            "name": "X",
            "position": 0,
            "stddev": 134.5796624,
            "variance": 18111.68552
          },
          {
            "average": 2279312.502,
            "count": 5528023,
            "maximum": 2279544.586,
            "minimum": 2279068.886,
            "name": "Y",
            "position": 1,
            "stddev": 125.5721921,
            "variance": 15768.37543
          },
          {
            "average": 28.18506828,
            "count": 5528023,
            "maximum": 31.68637843,
            "minimum": 23.56637843,
            "name": "Z",
            "position": 2,
            "stddev": 1.383791073,
            "variance": 1.914877733
          },
          {
            "average": 42579.40601,
            "count": 5528023,
            "maximum": 65535,
            "minimum": 1383,
            "name": "Intensity",
            "position": 3,
            "stddev": 10146.50531,
            "variance": 102951570
          },
          {
            "average": 1.000000362,
            "count": 5528023,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006014922526,
            "variance": 3.6179293e-07
          },
          {
            "average": 1.000000724,
            "count": 5528023,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008506383475,
            "variance": 7.235855982e-07
          },
          {
            "average": 0.495888494,
            "count": 5528023,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999831405,
            "variance": 0.2499831407
          },
          {
            "average": 0.0003008308757,
            "count": 5528023,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0173418693,
            "variance": 0.0003007404309
          },
          {
            "average": 1.219030927,
            "count": 5528023,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4162495768,
            "variance": 0.1732637102
          },
          {
            "average": 3.92132438,
            "count": 5528023,
            "maximum": 20.35199928,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51456151,
            "variance": 110.5560036
          },
          {
            "average": 0.52065232,
            "count": 5528023,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995733448,
            "variance": 0.2495735268
          },
          {
            "average": 667.7082995,
            "count": 5528023,
            "maximum": 707,
            "minimum": 657,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.45267933,
            "variance": 340.5013743
          },
          {
            "average": 222296195.7,
            "count": 5528023,
            "maximum": 222298516.6,
            "minimum": 222295381.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1048.687156,
            "variance": 1099744.752
          },
          {
            "average": 0.52065232,
            "count": 5528023,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995733448,
            "variance": 0.2495735268
          },
          {
            "average": 0,
            "count": 5528023,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5528023,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5528023,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.26442636,
            "count": 5528023,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4410273181,
            "variance": 0.1945050953
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -131529.3543,
          2279068.886,
          23.56637843,
          -131036.5143,
          2279544.586,
          31.68637843
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -131529.35431928482,
                2279068.8856784324,
                23.56637843237702
              ],
              [
                -131529.35431928482,
                2279544.5856784326,
                23.56637843237702
              ],
              [
                -131036.5143192848,
                2279544.5856784326,
                31.686378432377026
              ],
              [
                -131036.5143192848,
                2279068.8856784324,
                31.686378432377026
              ],
              [
                -131529.35431928482,
                2279068.8856784324,
                23.56637843237702
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-29T23:21:56+00:00",
        "end_time": "2018-09-29T22:29:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180929_B18_NSB6_0217.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180929_B18_NSB6_0217.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180929_B18_NSB6_0217.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0217.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -157.4569847,
            70.46382487,
            23.56637843,
            -157.4434069,
            70.4684007,
            31.68637843
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -157.4563345755094,
                  70.46382487000619,
                  23.56637843237702
                ],
                [
                  -157.4569846918688,
                  70.4681667623493,
                  23.56637843237702
                ],
                [
                  -157.44405463878886,
                  70.46840069715718,
                  31.686378432377026
                ],
                [
                  -157.44340694529984,
                  70.46405875500216,
                  31.686378432377026
                ],
                [
                  -157.4563345755094,
                  70.46382487000619,
                  23.56637843237702
                ]
              ]
            ]
          },
          "id": "20180929_B18_NSB6_0217.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180929_B18_NSB6_0217.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-29T23:21:56Z",
            "pc:count": 5528023,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -131266.6974,
                "count": 5528023,
                "maximum": -131036.5143,
                "minimum": -131529.3543,
                "name": "X",
                "position": 0,
                "stddev": 134.5796624,
                "variance": 18111.68552
              },
              {
                "average": 2279312.502,
                "count": 5528023,
                "maximum": 2279544.586,
                "minimum": 2279068.886,
                "name": "Y",
                "position": 1,
                "stddev": 125.5721921,
                "variance": 15768.37543
              },
              {
                "average": 28.18506828,
                "count": 5528023,
                "maximum": 31.68637843,
                "minimum": 23.56637843,
                "name": "Z",
                "position": 2,
                "stddev": 1.383791073,
                "variance": 1.914877733
              },
              {
                "average": 42579.40601,
                "count": 5528023,
                "maximum": 65535,
                "minimum": 1383,
                "name": "Intensity",
                "position": 3,
                "stddev": 10146.50531,
                "variance": 102951570
              },
              {
                "average": 1.000000362,
                "count": 5528023,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006014922526,
                "variance": 3.6179293e-07
              },
              {
                "average": 1.000000724,
                "count": 5528023,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008506383475,
                "variance": 7.235855982e-07
              },
              {
                "average": 0.495888494,
                "count": 5528023,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999831405,
                "variance": 0.2499831407
              },
              {
                "average": 0.0003008308757,
                "count": 5528023,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0173418693,
                "variance": 0.0003007404309
              },
              {
                "average": 1.219030927,
                "count": 5528023,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4162495768,
                "variance": 0.1732637102
              },
              {
                "average": 3.92132438,
                "count": 5528023,
                "maximum": 20.35199928,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51456151,
                "variance": 110.5560036
              },
              {
                "average": 0.52065232,
                "count": 5528023,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995733448,
                "variance": 0.2495735268
              },
              {
                "average": 667.7082995,
                "count": 5528023,
                "maximum": 707,
                "minimum": 657,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.45267933,
                "variance": 340.5013743
              },
              {
                "average": 222296195.7,
                "count": 5528023,
                "maximum": 222298516.6,
                "minimum": 222295381.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1048.687156,
                "variance": 1099744.752
              },
              {
                "average": 0.52065232,
                "count": 5528023,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995733448,
                "variance": 0.2495735268
              },
              {
                "average": 0,
                "count": 5528023,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5528023,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5528023,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.26442636,
                "count": 5528023,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4410273181,
                "variance": 0.1945050953
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -131529.3543,
              2279068.886,
              23.56637843,
              -131036.5143,
              2279544.586,
              31.68637843
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -131529.35431928482,
                    2279068.8856784324,
                    23.56637843237702
                  ],
                  [
                    -131529.35431928482,
                    2279544.5856784326,
                    23.56637843237702
                  ],
                  [
                    -131036.5143192848,
                    2279544.5856784326,
                    31.686378432377026
                  ],
                  [
                    -131036.5143192848,
                    2279068.8856784324,
                    31.686378432377026
                  ],
                  [
                    -131529.35431928482,
                    2279068.8856784324,
                    23.56637843237702
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-29T23:21:56+00:00",
            "end_time": "2018-09-29T22:29:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1568.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77254695936557,
              71.2392861264954,
              -9.152330916151826
            ],
            [
              -156.77308423074956,
              71.24363184118947,
              -9.152330916151826
            ],
            [
              -156.75962428175706,
              71.24382139189204,
              22.787669083848176
            ],
            [
              -156.75908961215214,
              71.23947563498805,
              22.787669083848176
            ],
            [
              -156.77254695936557,
              71.2392861264954,
              -9.152330916151826
            ]
          ]
        ]
      },
      "bbox": [
        -156.7730842,
        71.23928613,
        -9.152330916,
        -156.7590896,
        71.24382139,
        22.78766908
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:29Z",
        "pc:count": 2128304,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101742.0187,
            "count": 2128304,
            "maximum": -101496.637,
            "minimum": -101992.257,
            "name": "X",
            "position": 0,
            "stddev": 138.852477,
            "variance": 19280.01038
          },
          {
            "average": 2362672.537,
            "count": 2128304,
            "maximum": 2362895.184,
            "minimum": 2362421.584,
            "name": "Y",
            "position": 1,
            "stddev": 132.8267281,
            "variance": 17642.93969
          },
          {
            "average": 9.687735559,
            "count": 2128304,
            "maximum": 22.78766908,
            "minimum": -9.152330916,
            "name": "Z",
            "position": 2,
            "stddev": 0.08714890445,
            "variance": 0.007594931546
          },
          {
            "average": 20694.59957,
            "count": 2128304,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 16471.80801,
            "variance": 271320459.1
          },
          {
            "average": 1.000001879,
            "count": 2128304,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001370922357,
            "variance": 1.879428109e-06
          },
          {
            "average": 1.000003759,
            "count": 2128304,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001938775168,
            "variance": 3.758849153e-06
          },
          {
            "average": 0.4943250588,
            "count": 2128304,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999679115,
            "variance": 0.2499679125
          },
          {
            "average": 0.0007907704914,
            "count": 2128304,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02810952765,
            "variance": 0.0007901455447
          },
          {
            "average": 7.770340609,
            "count": 2128304,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.612965807,
            "variance": 6.827590308
          },
          {
            "average": 3.179949901,
            "count": 2128304,
            "maximum": 20.55599976,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.464622282,
            "variance": 55.72058581
          },
          {
            "average": 0.4852868763,
            "count": 2128304,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997835945,
            "variance": 0.2497836414
          },
          {
            "average": 430.8462973,
            "count": 2128304,
            "maximum": 466,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.18691289,
            "variance": 448.885278
          },
          {
            "average": 220504060.8,
            "count": 2128304,
            "maximum": 220726549,
            "minimum": 220420450.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 135379.7533,
            "variance": 18327677600.0
          },
          {
            "average": 0.4852868763,
            "count": 2128304,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997835945,
            "variance": 0.2497836414
          },
          {
            "average": 0,
            "count": 2128304,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2128304,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2128304,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04010752223,
            "count": 2128304,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1962114344,
            "variance": 0.03849892698
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101992.257,
          2362421.584,
          -9.152330916,
          -101496.637,
          2362895.184,
          22.78766908
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101992.25701246064,
                2362421.5841508266,
                -9.152330916151826
              ],
              [
                -101992.25701246064,
                2362895.184150826,
                -9.152330916151826
              ],
              [
                -101496.63701246065,
                2362895.184150826,
                22.787669083848176
              ],
              [
                -101496.63701246065,
                2362421.5841508266,
                22.787669083848176
              ],
              [
                -101992.25701246064,
                2362421.5841508266,
                -9.152330916151826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:29+00:00",
        "end_time": "2018-09-08T05:40:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1568.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1568.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1568.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1568.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7730842,
            71.23928613,
            -9.152330916,
            -156.7590896,
            71.24382139,
            22.78766908
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77254695936557,
                  71.2392861264954,
                  -9.152330916151826
                ],
                [
                  -156.77308423074956,
                  71.24363184118947,
                  -9.152330916151826
                ],
                [
                  -156.75962428175706,
                  71.24382139189204,
                  22.787669083848176
                ],
                [
                  -156.75908961215214,
                  71.23947563498805,
                  22.787669083848176
                ],
                [
                  -156.77254695936557,
                  71.2392861264954,
                  -9.152330916151826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1568.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1568.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:29Z",
            "pc:count": 2128304,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101742.0187,
                "count": 2128304,
                "maximum": -101496.637,
                "minimum": -101992.257,
                "name": "X",
                "position": 0,
                "stddev": 138.852477,
                "variance": 19280.01038
              },
              {
                "average": 2362672.537,
                "count": 2128304,
                "maximum": 2362895.184,
                "minimum": 2362421.584,
                "name": "Y",
                "position": 1,
                "stddev": 132.8267281,
                "variance": 17642.93969
              },
              {
                "average": 9.687735559,
                "count": 2128304,
                "maximum": 22.78766908,
                "minimum": -9.152330916,
                "name": "Z",
                "position": 2,
                "stddev": 0.08714890445,
                "variance": 0.007594931546
              },
              {
                "average": 20694.59957,
                "count": 2128304,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 16471.80801,
                "variance": 271320459.1
              },
              {
                "average": 1.000001879,
                "count": 2128304,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001370922357,
                "variance": 1.879428109e-06
              },
              {
                "average": 1.000003759,
                "count": 2128304,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001938775168,
                "variance": 3.758849153e-06
              },
              {
                "average": 0.4943250588,
                "count": 2128304,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999679115,
                "variance": 0.2499679125
              },
              {
                "average": 0.0007907704914,
                "count": 2128304,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02810952765,
                "variance": 0.0007901455447
              },
              {
                "average": 7.770340609,
                "count": 2128304,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.612965807,
                "variance": 6.827590308
              },
              {
                "average": 3.179949901,
                "count": 2128304,
                "maximum": 20.55599976,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.464622282,
                "variance": 55.72058581
              },
              {
                "average": 0.4852868763,
                "count": 2128304,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997835945,
                "variance": 0.2497836414
              },
              {
                "average": 430.8462973,
                "count": 2128304,
                "maximum": 466,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.18691289,
                "variance": 448.885278
              },
              {
                "average": 220504060.8,
                "count": 2128304,
                "maximum": 220726549,
                "minimum": 220420450.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 135379.7533,
                "variance": 18327677600.0
              },
              {
                "average": 0.4852868763,
                "count": 2128304,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997835945,
                "variance": 0.2497836414
              },
              {
                "average": 0,
                "count": 2128304,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2128304,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2128304,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04010752223,
                "count": 2128304,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1962114344,
                "variance": 0.03849892698
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101992.257,
              2362421.584,
              -9.152330916,
              -101496.637,
              2362895.184,
              22.78766908
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101992.25701246064,
                    2362421.5841508266,
                    -9.152330916151826
                  ],
                  [
                    -101992.25701246064,
                    2362895.184150826,
                    -9.152330916151826
                  ],
                  [
                    -101496.63701246065,
                    2362895.184150826,
                    22.787669083848176
                  ],
                  [
                    -101496.63701246065,
                    2362421.5841508266,
                    22.787669083848176
                  ],
                  [
                    -101992.25701246064,
                    2362421.5841508266,
                    -9.152330916151826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:29+00:00",
            "end_time": "2018-09-08T05:40:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1723.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8482058433918,
              71.2520998027228,
              1.95859794794436
            ],
            [
              -156.84875318429133,
              71.25640713965258,
              1.95859794794436
            ],
            [
              -156.83529001887692,
              71.25660183361423,
              10.79859794794436
            ],
            [
              -156.83474525839975,
              71.2522944536803,
              10.79859794794436
            ],
            [
              -156.8482058433918,
              71.2520998027228,
              1.95859794794436
            ]
          ]
        ]
      },
      "bbox": [
        -156.8487532,
        71.2520998,
        1.958597948,
        -156.8347453,
        71.25660183,
        10.79859795
      ],
      "properties": {
        "datetime": "2018-09-08T05:04:23Z",
        "pc:count": 3076761,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104476.2625,
            "count": 3076761,
            "maximum": -104218.4996,
            "minimum": -104713.9796,
            "name": "X",
            "position": 0,
            "stddev": 130.4232795,
            "variance": 17010.23185
          },
          {
            "average": 2364166.891,
            "count": 3076761,
            "maximum": 2364402.67,
            "minimum": 2363933.27,
            "name": "Y",
            "position": 1,
            "stddev": 126.0062374,
            "variance": 15877.57187
          },
          {
            "average": 8.363944278,
            "count": 3076761,
            "maximum": 10.79859795,
            "minimum": 1.958597948,
            "name": "Z",
            "position": 2,
            "stddev": 2.019312482,
            "variance": 4.077622901
          },
          {
            "average": 46410.8339,
            "count": 3076761,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7326.622867,
            "variance": 53679402.63
          },
          {
            "average": 1,
            "count": 3076761,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3076761,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5010564681,
            "count": 3076761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989651,
            "variance": 0.2499989651
          },
          {
            "average": 0.0004013961435,
            "count": 3076761,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02003085508,
            "variance": 0.0004012351551
          },
          {
            "average": 1.36440042,
            "count": 3076761,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9194288212,
            "variance": 0.8453493572
          },
          {
            "average": 1.335260068,
            "count": 3076761,
            "maximum": 16.40399933,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41062851,
            "variance": 108.381186
          },
          {
            "average": 0.5228638169,
            "count": 3076761,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994770535,
            "variance": 0.249477327
          },
          {
            "average": 410.1302743,
            "count": 3076761,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9286042312,
            "variance": 0.8623058182
          },
          {
            "average": 220417412.6,
            "count": 3076761,
            "maximum": 220418263.9,
            "minimum": 220416010.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.7952459,
            "variance": 265014.1452
          },
          {
            "average": 0.5228638169,
            "count": 3076761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994770535,
            "variance": 0.249477327
          },
          {
            "average": 0,
            "count": 3076761,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3076761,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3076761,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2536053337,
            "count": 3076761,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4350743958,
            "variance": 0.1892897299
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104713.9796,
          2363933.27,
          1.958597948,
          -104218.4996,
          2364402.67,
          10.79859795
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104713.9795615798,
                2363933.270239978,
                1.95859794794436
              ],
              [
                -104713.9795615798,
                2364402.6702399785,
                1.95859794794436
              ],
              [
                -104218.4995615798,
                2364402.6702399785,
                10.79859794794436
              ],
              [
                -104218.4995615798,
                2363933.270239978,
                10.79859794794436
              ],
              [
                -104713.9795615798,
                2363933.270239978,
                1.95859794794436
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:04:23+00:00",
        "end_time": "2018-09-08T04:26:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1723.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1723.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1723.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1723.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8487532,
            71.2520998,
            1.958597948,
            -156.8347453,
            71.25660183,
            10.79859795
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8482058433918,
                  71.2520998027228,
                  1.95859794794436
                ],
                [
                  -156.84875318429133,
                  71.25640713965258,
                  1.95859794794436
                ],
                [
                  -156.83529001887692,
                  71.25660183361423,
                  10.79859794794436
                ],
                [
                  -156.83474525839975,
                  71.2522944536803,
                  10.79859794794436
                ],
                [
                  -156.8482058433918,
                  71.2520998027228,
                  1.95859794794436
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1723.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1723.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:04:23Z",
            "pc:count": 3076761,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104476.2625,
                "count": 3076761,
                "maximum": -104218.4996,
                "minimum": -104713.9796,
                "name": "X",
                "position": 0,
                "stddev": 130.4232795,
                "variance": 17010.23185
              },
              {
                "average": 2364166.891,
                "count": 3076761,
                "maximum": 2364402.67,
                "minimum": 2363933.27,
                "name": "Y",
                "position": 1,
                "stddev": 126.0062374,
                "variance": 15877.57187
              },
              {
                "average": 8.363944278,
                "count": 3076761,
                "maximum": 10.79859795,
                "minimum": 1.958597948,
                "name": "Z",
                "position": 2,
                "stddev": 2.019312482,
                "variance": 4.077622901
              },
              {
                "average": 46410.8339,
                "count": 3076761,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7326.622867,
                "variance": 53679402.63
              },
              {
                "average": 1,
                "count": 3076761,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3076761,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5010564681,
                "count": 3076761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989651,
                "variance": 0.2499989651
              },
              {
                "average": 0.0004013961435,
                "count": 3076761,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02003085508,
                "variance": 0.0004012351551
              },
              {
                "average": 1.36440042,
                "count": 3076761,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9194288212,
                "variance": 0.8453493572
              },
              {
                "average": 1.335260068,
                "count": 3076761,
                "maximum": 16.40399933,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41062851,
                "variance": 108.381186
              },
              {
                "average": 0.5228638169,
                "count": 3076761,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994770535,
                "variance": 0.249477327
              },
              {
                "average": 410.1302743,
                "count": 3076761,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9286042312,
                "variance": 0.8623058182
              },
              {
                "average": 220417412.6,
                "count": 3076761,
                "maximum": 220418263.9,
                "minimum": 220416010.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.7952459,
                "variance": 265014.1452
              },
              {
                "average": 0.5228638169,
                "count": 3076761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994770535,
                "variance": 0.249477327
              },
              {
                "average": 0,
                "count": 3076761,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3076761,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3076761,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2536053337,
                "count": 3076761,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4350743958,
                "variance": 0.1892897299
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104713.9796,
              2363933.27,
              1.958597948,
              -104218.4996,
              2364402.67,
              10.79859795
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104713.9795615798,
                    2363933.270239978,
                    1.95859794794436
                  ],
                  [
                    -104713.9795615798,
                    2364402.6702399785,
                    1.95859794794436
                  ],
                  [
                    -104218.4995615798,
                    2364402.6702399785,
                    10.79859794794436
                  ],
                  [
                    -104218.4995615798,
                    2363933.270239978,
                    10.79859794794436
                  ],
                  [
                    -104713.9795615798,
                    2363933.270239978,
                    1.95859794794436
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:04:23+00:00",
            "end_time": "2018-09-08T04:26:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1611.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.90480730574848,
              71.2456074427756,
              0.86852842548538
            ],
            [
              -156.90518424512908,
              71.24851680416788,
              0.86852842548538
            ],
            [
              -156.89943746242005,
              71.24860170045798,
              1.46852842548538
            ],
            [
              -156.89906126677067,
              71.2456923264047,
              1.46852842548538
            ],
            [
              -156.90480730574848,
              71.2456074427756,
              0.86852842548538
            ]
          ]
        ]
      },
      "bbox": [
        -156.9051842,
        71.24560744,
        0.8685284255,
        -156.8990613,
        71.2486017,
        1.468528425
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:49Z",
        "pc:count": 495032,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106708.7478,
            "count": 495032,
            "maximum": -106612.9414,
            "minimum": -106824.5214,
            "name": "X",
            "position": 0,
            "stddev": 53.20458687,
            "variance": 2830.728064
          },
          {
            "average": 2363494.791,
            "count": 495032,
            "maximum": 2363634.267,
            "minimum": 2363317.187,
            "name": "Y",
            "position": 1,
            "stddev": 73.94264438,
            "variance": 5467.514658
          },
          {
            "average": 1.172941554,
            "count": 495032,
            "maximum": 1.468528425,
            "minimum": 0.8685284255,
            "name": "Z",
            "position": 2,
            "stddev": 0.05886243668,
            "variance": 0.003464786452
          },
          {
            "average": 15562.59208,
            "count": 495032,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12004.68108,
            "variance": 144112367.7
          },
          {
            "average": 1,
            "count": 495032,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 495032,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4974163286,
            "count": 495032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999938296,
            "variance": 0.2499938296
          },
          {
            "average": 0.0004989576431,
            "count": 495032,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02233180897,
            "variance": 0.0004987096918
          },
          {
            "average": 7.43524459,
            "count": 495032,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.881067733,
            "variance": 8.30055128
          },
          {
            "average": 1.139073854,
            "count": 495032,
            "maximum": 16.22400093,
            "minimum": -15.72599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.279662815,
            "variance": 52.99349071
          },
          {
            "average": 0.484049516,
            "count": 495032,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997460221,
            "variance": 0.2497460866
          },
          {
            "average": 420.228761,
            "count": 495032,
            "maximum": 465,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.66013671,
            "variance": 559.8020694
          },
          {
            "average": 220483720.7,
            "count": 495032,
            "maximum": 220726329,
            "minimum": 220415797.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128176.0435,
            "variance": 16429098120.0
          },
          {
            "average": 0.484049516,
            "count": 495032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997460221,
            "variance": 0.2497460866
          },
          {
            "average": 0,
            "count": 495032,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 495032,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 495032,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0205683673,
            "count": 495032,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1419343167,
            "variance": 0.02014535026
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106824.5214,
          2363317.187,
          0.8685284255,
          -106612.9414,
          2363634.267,
          1.468528425
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106824.52136105257,
                2363317.187436918,
                0.86852842548538
              ],
              [
                -106824.52136105257,
                2363634.267436918,
                0.86852842548538
              ],
              [
                -106612.94136105258,
                2363634.267436918,
                1.46852842548538
              ],
              [
                -106612.94136105258,
                2363317.187436918,
                1.46852842548538
              ],
              [
                -106824.52136105257,
                2363317.187436918,
                0.86852842548538
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:49+00:00",
        "end_time": "2018-09-08T04:23:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1611.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1611.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1611.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1611.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.9051842,
            71.24560744,
            0.8685284255,
            -156.8990613,
            71.2486017,
            1.468528425
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.90480730574848,
                  71.2456074427756,
                  0.86852842548538
                ],
                [
                  -156.90518424512908,
                  71.24851680416788,
                  0.86852842548538
                ],
                [
                  -156.89943746242005,
                  71.24860170045798,
                  1.46852842548538
                ],
                [
                  -156.89906126677067,
                  71.2456923264047,
                  1.46852842548538
                ],
                [
                  -156.90480730574848,
                  71.2456074427756,
                  0.86852842548538
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1611.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1611.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:49Z",
            "pc:count": 495032,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106708.7478,
                "count": 495032,
                "maximum": -106612.9414,
                "minimum": -106824.5214,
                "name": "X",
                "position": 0,
                "stddev": 53.20458687,
                "variance": 2830.728064
              },
              {
                "average": 2363494.791,
                "count": 495032,
                "maximum": 2363634.267,
                "minimum": 2363317.187,
                "name": "Y",
                "position": 1,
                "stddev": 73.94264438,
                "variance": 5467.514658
              },
              {
                "average": 1.172941554,
                "count": 495032,
                "maximum": 1.468528425,
                "minimum": 0.8685284255,
                "name": "Z",
                "position": 2,
                "stddev": 0.05886243668,
                "variance": 0.003464786452
              },
              {
                "average": 15562.59208,
                "count": 495032,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12004.68108,
                "variance": 144112367.7
              },
              {
                "average": 1,
                "count": 495032,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 495032,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4974163286,
                "count": 495032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999938296,
                "variance": 0.2499938296
              },
              {
                "average": 0.0004989576431,
                "count": 495032,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02233180897,
                "variance": 0.0004987096918
              },
              {
                "average": 7.43524459,
                "count": 495032,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.881067733,
                "variance": 8.30055128
              },
              {
                "average": 1.139073854,
                "count": 495032,
                "maximum": 16.22400093,
                "minimum": -15.72599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.279662815,
                "variance": 52.99349071
              },
              {
                "average": 0.484049516,
                "count": 495032,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997460221,
                "variance": 0.2497460866
              },
              {
                "average": 420.228761,
                "count": 495032,
                "maximum": 465,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.66013671,
                "variance": 559.8020694
              },
              {
                "average": 220483720.7,
                "count": 495032,
                "maximum": 220726329,
                "minimum": 220415797.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128176.0435,
                "variance": 16429098120.0
              },
              {
                "average": 0.484049516,
                "count": 495032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997460221,
                "variance": 0.2497460866
              },
              {
                "average": 0,
                "count": 495032,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 495032,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 495032,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0205683673,
                "count": 495032,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1419343167,
                "variance": 0.02014535026
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106824.5214,
              2363317.187,
              0.8685284255,
              -106612.9414,
              2363634.267,
              1.468528425
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106824.52136105257,
                    2363317.187436918,
                    0.86852842548538
                  ],
                  [
                    -106824.52136105257,
                    2363634.267436918,
                    0.86852842548538
                  ],
                  [
                    -106612.94136105258,
                    2363634.267436918,
                    1.46852842548538
                  ],
                  [
                    -106612.94136105258,
                    2363317.187436918,
                    1.46852842548538
                  ],
                  [
                    -106824.52136105257,
                    2363317.187436918,
                    0.86852842548538
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:49+00:00",
            "end_time": "2018-09-08T04:23:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1562.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84892871117623,
              71.23976813422294,
              1.981576055511539
            ],
            [
              -156.84948097345884,
              71.24411511931883,
              1.981576055511539
            ],
            [
              -156.83602355985653,
              71.24430987085384,
              639.8015760555115
            ],
            [
              -156.83547389941768,
              71.23996284237595,
              639.8015760555115
            ],
            [
              -156.84892871117623,
              71.23976813422294,
              1.981576055511539
            ]
          ]
        ]
      },
      "bbox": [
        -156.849481,
        71.23976813,
        1.981576056,
        -156.8354739,
        71.24430987,
        639.8015761
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:48Z",
        "pc:count": 3672310,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104545.2661,
            "count": 3672310,
            "maximum": -104302.5817,
            "minimum": -104798.1217,
            "name": "X",
            "position": 0,
            "stddev": 138.0688155,
            "variance": 19062.99781
          },
          {
            "average": 2362832.499,
            "count": 3672310,
            "maximum": 2363066.7,
            "minimum": 2362592.94,
            "name": "Y",
            "position": 1,
            "stddev": 123.1798792,
            "variance": 15173.28264
          },
          {
            "average": 7.140915471,
            "count": 3672310,
            "maximum": 639.8015761,
            "minimum": 1.981576056,
            "name": "Z",
            "position": 2,
            "stddev": 1.8757444,
            "variance": 3.518417056
          },
          {
            "average": 49253.0324,
            "count": 3672310,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 7168.241864,
            "variance": 51383691.42
          },
          {
            "average": 1.000000272,
            "count": 3672310,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005218315492,
            "variance": 2.723081657e-07
          },
          {
            "average": 1.000000545,
            "count": 3672310,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007379811536,
            "variance": 5.446161831e-07
          },
          {
            "average": 0.4951790562,
            "count": 3672310,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499976826,
            "variance": 0.2499768266
          },
          {
            "average": 0.0004664638879,
            "count": 3672310,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02159274013,
            "variance": 0.0004662464263
          },
          {
            "average": 1.312955606,
            "count": 3672310,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9134640543,
            "variance": 0.8344165785
          },
          {
            "average": 3.652484723,
            "count": 3672310,
            "maximum": 20.62199974,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.92873394,
            "variance": 119.4372256
          },
          {
            "average": 0.5011061158,
            "count": 3672310,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999988446,
            "variance": 0.2499988446
          },
          {
            "average": 426.8607784,
            "count": 3672310,
            "maximum": 466,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.21167845,
            "variance": 538.7820164
          },
          {
            "average": 220500314.9,
            "count": 3672310,
            "maximum": 220726508,
            "minimum": 220418045.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 135678.8709,
            "variance": 18408756000.0
          },
          {
            "average": 0.5011061158,
            "count": 3672310,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999988446,
            "variance": 0.2499988446
          },
          {
            "average": 0,
            "count": 3672310,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3672310,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3672310,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2324414333,
            "count": 3672310,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4223889937,
            "variance": 0.178412462
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104798.1217,
          2362592.94,
          1.981576056,
          -104302.5817,
          2363066.7,
          639.8015761
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104798.12166932998,
                2362592.9402588364,
                1.981576055511539
              ],
              [
                -104798.12166932998,
                2363066.700258836,
                1.981576055511539
              ],
              [
                -104302.58166932997,
                2363066.700258836,
                639.8015760555115
              ],
              [
                -104302.58166932997,
                2362592.9402588364,
                639.8015760555115
              ],
              [
                -104798.12166932998,
                2362592.9402588364,
                1.981576055511539
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:48+00:00",
        "end_time": "2018-09-08T05:00:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1562.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1562.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1562.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1562.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.849481,
            71.23976813,
            1.981576056,
            -156.8354739,
            71.24430987,
            639.8015761
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84892871117623,
                  71.23976813422294,
                  1.981576055511539
                ],
                [
                  -156.84948097345884,
                  71.24411511931883,
                  1.981576055511539
                ],
                [
                  -156.83602355985653,
                  71.24430987085384,
                  639.8015760555115
                ],
                [
                  -156.83547389941768,
                  71.23996284237595,
                  639.8015760555115
                ],
                [
                  -156.84892871117623,
                  71.23976813422294,
                  1.981576055511539
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1562.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1562.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:48Z",
            "pc:count": 3672310,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104545.2661,
                "count": 3672310,
                "maximum": -104302.5817,
                "minimum": -104798.1217,
                "name": "X",
                "position": 0,
                "stddev": 138.0688155,
                "variance": 19062.99781
              },
              {
                "average": 2362832.499,
                "count": 3672310,
                "maximum": 2363066.7,
                "minimum": 2362592.94,
                "name": "Y",
                "position": 1,
                "stddev": 123.1798792,
                "variance": 15173.28264
              },
              {
                "average": 7.140915471,
                "count": 3672310,
                "maximum": 639.8015761,
                "minimum": 1.981576056,
                "name": "Z",
                "position": 2,
                "stddev": 1.8757444,
                "variance": 3.518417056
              },
              {
                "average": 49253.0324,
                "count": 3672310,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 7168.241864,
                "variance": 51383691.42
              },
              {
                "average": 1.000000272,
                "count": 3672310,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005218315492,
                "variance": 2.723081657e-07
              },
              {
                "average": 1.000000545,
                "count": 3672310,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007379811536,
                "variance": 5.446161831e-07
              },
              {
                "average": 0.4951790562,
                "count": 3672310,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499976826,
                "variance": 0.2499768266
              },
              {
                "average": 0.0004664638879,
                "count": 3672310,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02159274013,
                "variance": 0.0004662464263
              },
              {
                "average": 1.312955606,
                "count": 3672310,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9134640543,
                "variance": 0.8344165785
              },
              {
                "average": 3.652484723,
                "count": 3672310,
                "maximum": 20.62199974,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.92873394,
                "variance": 119.4372256
              },
              {
                "average": 0.5011061158,
                "count": 3672310,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999988446,
                "variance": 0.2499988446
              },
              {
                "average": 426.8607784,
                "count": 3672310,
                "maximum": 466,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.21167845,
                "variance": 538.7820164
              },
              {
                "average": 220500314.9,
                "count": 3672310,
                "maximum": 220726508,
                "minimum": 220418045.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 135678.8709,
                "variance": 18408756000.0
              },
              {
                "average": 0.5011061158,
                "count": 3672310,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999988446,
                "variance": 0.2499988446
              },
              {
                "average": 0,
                "count": 3672310,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3672310,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3672310,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2324414333,
                "count": 3672310,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4223889937,
                "variance": 0.178412462
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104798.1217,
              2362592.94,
              1.981576056,
              -104302.5817,
              2363066.7,
              639.8015761
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104798.12166932998,
                    2362592.9402588364,
                    1.981576055511539
                  ],
                  [
                    -104798.12166932998,
                    2363066.700258836,
                    1.981576055511539
                  ],
                  [
                    -104302.58166932997,
                    2363066.700258836,
                    639.8015760555115
                  ],
                  [
                    -104302.58166932997,
                    2362592.9402588364,
                    639.8015760555115
                  ],
                  [
                    -104798.12166932998,
                    2362592.9402588364,
                    1.981576055511539
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:48+00:00",
            "end_time": "2018-09-08T05:00:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1665.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.90301218553512,
              71.2484777449221,
              0.935096766830176
            ],
            [
              -156.9032455129379,
              71.25027965596509,
              0.935096766830176
            ],
            [
              -156.8993269191192,
              71.25033752041928,
              1.475096766830176
            ],
            [
              -156.89909390584396,
              71.24853560403069,
              1.475096766830176
            ],
            [
              -156.90301218553512,
              71.2484777449221,
              0.935096766830176
            ]
          ]
        ]
      },
      "bbox": [
        -156.9032455,
        71.24847774,
        0.9350967668,
        -156.8990939,
        71.25033752,
        1.475096767
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:47Z",
        "pc:count": 115360,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106653.5539,
            "count": 115360,
            "maximum": -106600.6308,
            "minimum": -106744.8908,
            "name": "X",
            "position": 0,
            "stddev": 32.74140794,
            "variance": 1071.999794
          },
          {
            "average": 2363692.921,
            "count": 115360,
            "maximum": 2363822.906,
            "minimum": 2363626.526,
            "name": "Y",
            "position": 1,
            "stddev": 44.99774309,
            "variance": 2024.796883
          },
          {
            "average": 1.175508521,
            "count": 115360,
            "maximum": 1.475096767,
            "minimum": 0.9350967668,
            "name": "Z",
            "position": 2,
            "stddev": 0.06219465703,
            "variance": 0.003868175363
          },
          {
            "average": 13998.73589,
            "count": 115360,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10775.51321,
            "variance": 116111684.9
          },
          {
            "average": 1,
            "count": 115360,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 115360,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4895631068,
            "count": 115360,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998932261,
            "variance": 0.2498932375
          },
          {
            "average": 0.0007194868239,
            "count": 115360,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02681371655,
            "variance": 0.000718975395
          },
          {
            "average": 7.728848821,
            "count": 115360,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.460063193,
            "variance": 6.051910914
          },
          {
            "average": 3.646760056,
            "count": 115360,
            "maximum": 9.803999901,
            "minimum": -19.74600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.084042854,
            "variance": 50.18366315
          },
          {
            "average": 0.4804958391,
            "count": 115360,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996216084,
            "variance": 0.2496217516
          },
          {
            "average": 413.5183512,
            "count": 115360,
            "maximum": 465,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.59018977,
            "variance": 309.4147761
          },
          {
            "average": 220448322.4,
            "count": 115360,
            "maximum": 220726327.9,
            "minimum": 220414851.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 94950.26858,
            "variance": 9015553503
          },
          {
            "average": 0.4804958391,
            "count": 115360,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996216084,
            "variance": 0.2496217516
          },
          {
            "average": 0,
            "count": 115360,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 115360,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 115360,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02086511789,
            "count": 115360,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1429333476,
            "variance": 0.02042994184
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106744.8908,
          2363626.526,
          0.9350967668,
          -106600.6308,
          2363822.906,
          1.475096767
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106744.89079792392,
                2363626.5261675953,
                0.935096766830176
              ],
              [
                -106744.89079792392,
                2363822.906167595,
                0.935096766830176
              ],
              [
                -106600.6307979239,
                2363822.906167595,
                1.475096766830176
              ],
              [
                -106600.6307979239,
                2363626.5261675953,
                1.475096766830176
              ],
              [
                -106744.89079792392,
                2363626.5261675953,
                0.935096766830176
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:47+00:00",
        "end_time": "2018-09-08T04:07:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1665.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1665.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1665.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1665.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.9032455,
            71.24847774,
            0.9350967668,
            -156.8990939,
            71.25033752,
            1.475096767
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.90301218553512,
                  71.2484777449221,
                  0.935096766830176
                ],
                [
                  -156.9032455129379,
                  71.25027965596509,
                  0.935096766830176
                ],
                [
                  -156.8993269191192,
                  71.25033752041928,
                  1.475096766830176
                ],
                [
                  -156.89909390584396,
                  71.24853560403069,
                  1.475096766830176
                ],
                [
                  -156.90301218553512,
                  71.2484777449221,
                  0.935096766830176
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1665.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1665.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:47Z",
            "pc:count": 115360,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106653.5539,
                "count": 115360,
                "maximum": -106600.6308,
                "minimum": -106744.8908,
                "name": "X",
                "position": 0,
                "stddev": 32.74140794,
                "variance": 1071.999794
              },
              {
                "average": 2363692.921,
                "count": 115360,
                "maximum": 2363822.906,
                "minimum": 2363626.526,
                "name": "Y",
                "position": 1,
                "stddev": 44.99774309,
                "variance": 2024.796883
              },
              {
                "average": 1.175508521,
                "count": 115360,
                "maximum": 1.475096767,
                "minimum": 0.9350967668,
                "name": "Z",
                "position": 2,
                "stddev": 0.06219465703,
                "variance": 0.003868175363
              },
              {
                "average": 13998.73589,
                "count": 115360,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10775.51321,
                "variance": 116111684.9
              },
              {
                "average": 1,
                "count": 115360,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 115360,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4895631068,
                "count": 115360,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998932261,
                "variance": 0.2498932375
              },
              {
                "average": 0.0007194868239,
                "count": 115360,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02681371655,
                "variance": 0.000718975395
              },
              {
                "average": 7.728848821,
                "count": 115360,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.460063193,
                "variance": 6.051910914
              },
              {
                "average": 3.646760056,
                "count": 115360,
                "maximum": 9.803999901,
                "minimum": -19.74600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.084042854,
                "variance": 50.18366315
              },
              {
                "average": 0.4804958391,
                "count": 115360,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996216084,
                "variance": 0.2496217516
              },
              {
                "average": 413.5183512,
                "count": 115360,
                "maximum": 465,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.59018977,
                "variance": 309.4147761
              },
              {
                "average": 220448322.4,
                "count": 115360,
                "maximum": 220726327.9,
                "minimum": 220414851.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 94950.26858,
                "variance": 9015553503
              },
              {
                "average": 0.4804958391,
                "count": 115360,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996216084,
                "variance": 0.2496217516
              },
              {
                "average": 0,
                "count": 115360,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 115360,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 115360,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02086511789,
                "count": 115360,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1429333476,
                "variance": 0.02042994184
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106744.8908,
              2363626.526,
              0.9350967668,
              -106600.6308,
              2363822.906,
              1.475096767
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106744.89079792392,
                    2363626.5261675953,
                    0.935096766830176
                  ],
                  [
                    -106744.89079792392,
                    2363822.906167595,
                    0.935096766830176
                  ],
                  [
                    -106600.6307979239,
                    2363822.906167595,
                    1.475096766830176
                  ],
                  [
                    -106600.6307979239,
                    2363626.5261675953,
                    1.475096766830176
                  ],
                  [
                    -106744.89079792392,
                    2363626.5261675953,
                    0.935096766830176
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:47+00:00",
            "end_time": "2018-09-08T04:07:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1832.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79674033076842,
              71.2599356441573,
              5.674105813569327
            ],
            [
              -156.79728285555618,
              71.264282444241,
              5.674105813569327
            ],
            [
              -156.78380962646432,
              71.26447369350757,
              55.434105813569325
            ],
            [
              -156.78326970863182,
              71.26012685077433,
              55.434105813569325
            ],
            [
              -156.79674033076842,
              71.2599356441573,
              5.674105813569327
            ]
          ]
        ]
      },
      "bbox": [
        -156.7972829,
        71.25993564,
        5.674105814,
        -156.7832697,
        71.26447369,
        55.43410581
      ],
      "properties": {
        "datetime": "2018-09-08T05:22:53Z",
        "pc:count": 2980501,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102534.3744,
            "count": 2980501,
            "maximum": -102291.4077,
            "minimum": -102787.0677,
            "name": "X",
            "position": 0,
            "stddev": 136.558215,
            "variance": 18648.14609
          },
          {
            "average": 2364937.533,
            "count": 2980501,
            "maximum": 2365178.888,
            "minimum": 2364705.228,
            "name": "Y",
            "position": 1,
            "stddev": 128.8616342,
            "variance": 16605.32076
          },
          {
            "average": 8.462173397,
            "count": 2980501,
            "maximum": 55.43410581,
            "minimum": 5.674105814,
            "name": "Z",
            "position": 2,
            "stddev": 1.037754942,
            "variance": 1.076935321
          },
          {
            "average": 46915.03636,
            "count": 2980501,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8009.496346,
            "variance": 64152031.72
          },
          {
            "average": 1.000000671,
            "count": 2980501,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008191629268,
            "variance": 6.710279007e-07
          },
          {
            "average": 1.000001342,
            "count": 2980501,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001158470932,
            "variance": 1.342054901e-06
          },
          {
            "average": 0.5010835427,
            "count": 2980501,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989098,
            "variance": 0.2499989098
          },
          {
            "average": 0.0004445561333,
            "count": 2980501,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02107981623,
            "variance": 0.0004443586523
          },
          {
            "average": 1.318776944,
            "count": 2980501,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4662507711,
            "variance": 0.2173897816
          },
          {
            "average": -0.4572581109,
            "count": 2980501,
            "maximum": 16.40999985,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4822444,
            "variance": 109.8774478
          },
          {
            "average": 0.4881964475,
            "count": 2980501,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998607406,
            "variance": 0.24986076
          },
          {
            "average": 411.9183443,
            "count": 2980501,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9412324272,
            "variance": 0.885918482
          },
          {
            "average": 220418404.7,
            "count": 2980501,
            "maximum": 220419373.5,
            "minimum": 220417174.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 544.3534472,
            "variance": 296320.6755
          },
          {
            "average": 0.4881964475,
            "count": 2980501,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998607406,
            "variance": 0.24986076
          },
          {
            "average": 0,
            "count": 2980501,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2980501,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2980501,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.234249544,
            "count": 2980501,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4235289309,
            "variance": 0.1793767553
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102787.0677,
          2364705.228,
          5.674105814,
          -102291.4077,
          2365178.888,
          55.43410581
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102787.06766118224,
                2364705.227893819,
                5.674105813569327
              ],
              [
                -102787.06766118224,
                2365178.8878938193,
                5.674105813569327
              ],
              [
                -102291.40766118224,
                2365178.8878938193,
                55.434105813569325
              ],
              [
                -102291.40766118224,
                2364705.227893819,
                55.434105813569325
              ],
              [
                -102787.06766118224,
                2364705.227893819,
                5.674105813569327
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:22:53+00:00",
        "end_time": "2018-09-08T04:46:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1832.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1832.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1832.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1832.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7972829,
            71.25993564,
            5.674105814,
            -156.7832697,
            71.26447369,
            55.43410581
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79674033076842,
                  71.2599356441573,
                  5.674105813569327
                ],
                [
                  -156.79728285555618,
                  71.264282444241,
                  5.674105813569327
                ],
                [
                  -156.78380962646432,
                  71.26447369350757,
                  55.434105813569325
                ],
                [
                  -156.78326970863182,
                  71.26012685077433,
                  55.434105813569325
                ],
                [
                  -156.79674033076842,
                  71.2599356441573,
                  5.674105813569327
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1832.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1832.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:22:53Z",
            "pc:count": 2980501,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102534.3744,
                "count": 2980501,
                "maximum": -102291.4077,
                "minimum": -102787.0677,
                "name": "X",
                "position": 0,
                "stddev": 136.558215,
                "variance": 18648.14609
              },
              {
                "average": 2364937.533,
                "count": 2980501,
                "maximum": 2365178.888,
                "minimum": 2364705.228,
                "name": "Y",
                "position": 1,
                "stddev": 128.8616342,
                "variance": 16605.32076
              },
              {
                "average": 8.462173397,
                "count": 2980501,
                "maximum": 55.43410581,
                "minimum": 5.674105814,
                "name": "Z",
                "position": 2,
                "stddev": 1.037754942,
                "variance": 1.076935321
              },
              {
                "average": 46915.03636,
                "count": 2980501,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8009.496346,
                "variance": 64152031.72
              },
              {
                "average": 1.000000671,
                "count": 2980501,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008191629268,
                "variance": 6.710279007e-07
              },
              {
                "average": 1.000001342,
                "count": 2980501,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001158470932,
                "variance": 1.342054901e-06
              },
              {
                "average": 0.5010835427,
                "count": 2980501,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989098,
                "variance": 0.2499989098
              },
              {
                "average": 0.0004445561333,
                "count": 2980501,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02107981623,
                "variance": 0.0004443586523
              },
              {
                "average": 1.318776944,
                "count": 2980501,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4662507711,
                "variance": 0.2173897816
              },
              {
                "average": -0.4572581109,
                "count": 2980501,
                "maximum": 16.40999985,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4822444,
                "variance": 109.8774478
              },
              {
                "average": 0.4881964475,
                "count": 2980501,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998607406,
                "variance": 0.24986076
              },
              {
                "average": 411.9183443,
                "count": 2980501,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9412324272,
                "variance": 0.885918482
              },
              {
                "average": 220418404.7,
                "count": 2980501,
                "maximum": 220419373.5,
                "minimum": 220417174.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 544.3534472,
                "variance": 296320.6755
              },
              {
                "average": 0.4881964475,
                "count": 2980501,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998607406,
                "variance": 0.24986076
              },
              {
                "average": 0,
                "count": 2980501,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2980501,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2980501,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.234249544,
                "count": 2980501,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4235289309,
                "variance": 0.1793767553
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102787.0677,
              2364705.228,
              5.674105814,
              -102291.4077,
              2365178.888,
              55.43410581
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102787.06766118224,
                    2364705.227893819,
                    5.674105813569327
                  ],
                  [
                    -102787.06766118224,
                    2365178.8878938193,
                    5.674105813569327
                  ],
                  [
                    -102291.40766118224,
                    2365178.8878938193,
                    55.434105813569325
                  ],
                  [
                    -102291.40766118224,
                    2364705.227893819,
                    55.434105813569325
                  ],
                  [
                    -102787.06766118224,
                    2364705.227893819,
                    5.674105813569327
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:22:53+00:00",
            "end_time": "2018-09-08T04:46:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1666.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.89939163544395,
              71.24826896085078,
              0.901906813685951
            ],
            [
              -156.8999417317775,
              71.25252208946925,
              0.901906813685951
            ],
            [
              -156.88647971535167,
              71.252720306807,
              1.481906813685951
            ],
            [
              -156.88593216620905,
              71.24846713496672,
              1.481906813685951
            ],
            [
              -156.89939163544395,
              71.24826896085078,
              0.901906813685951
            ]
          ]
        ]
      },
      "bbox": [
        -156.8999417,
        71.24826896,
        0.9019068137,
        -156.8859322,
        71.25272031,
        1.481906814
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:45Z",
        "pc:count": 1519297,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106351.6959,
            "count": 1519297,
            "maximum": -106117.2986,
            "minimum": -106612.8386,
            "name": "X",
            "position": 0,
            "stddev": 127.6110825,
            "variance": 16284.58839
          },
          {
            "average": 2363813.766,
            "count": 1519297,
            "maximum": 2364061.519,
            "minimum": 2363597.999,
            "name": "Y",
            "position": 1,
            "stddev": 123.6337527,
            "variance": 15285.3048
          },
          {
            "average": 1.177463074,
            "count": 1519297,
            "maximum": 1.481906814,
            "minimum": 0.9019068137,
            "name": "Z",
            "position": 2,
            "stddev": 0.05907135666,
            "variance": 0.003489425178
          },
          {
            "average": 16209.65946,
            "count": 1519297,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12693.78038,
            "variance": 161132060.3
          },
          {
            "average": 1,
            "count": 1519297,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1519297,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.494318754,
            "count": 1519297,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999678869,
            "variance": 0.249967888
          },
          {
            "average": 0.0009043656375,
            "count": 1519297,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03005908107,
            "variance": 0.000903548355
          },
          {
            "average": 7.886933891,
            "count": 1519297,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.225093718,
            "variance": 4.951042056
          },
          {
            "average": 2.198119699,
            "count": 1519297,
            "maximum": 16.23600006,
            "minimum": -19.88999939,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.222082775,
            "variance": 52.15847961
          },
          {
            "average": 0.4819024852,
            "count": 1519297,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996725371,
            "variance": 0.2496726443
          },
          {
            "average": 410.0550097,
            "count": 1519297,
            "maximum": 465,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 11.32959056,
            "variance": 128.3596222
          },
          {
            "average": 220428609.2,
            "count": 1519297,
            "maximum": 220726325.9,
            "minimum": 220414852.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 61298.57173,
            "variance": 3757514896
          },
          {
            "average": 0.4819024852,
            "count": 1519297,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996725371,
            "variance": 0.2496726443
          },
          {
            "average": 0,
            "count": 1519297,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1519297,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1519297,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03799717896,
            "count": 1519297,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1911894804,
            "variance": 0.03655341741
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106612.8386,
          2363597.999,
          0.9019068137,
          -106117.2986,
          2364061.519,
          1.481906814
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106612.83855593862,
                2363597.9994146926,
                0.901906813685951
              ],
              [
                -106612.83855593862,
                2364061.519414692,
                0.901906813685951
              ],
              [
                -106117.29855593861,
                2364061.519414692,
                1.481906813685951
              ],
              [
                -106117.29855593861,
                2363597.9994146926,
                1.481906813685951
              ],
              [
                -106612.83855593862,
                2363597.9994146926,
                0.901906813685951
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:45+00:00",
        "end_time": "2018-09-08T04:07:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1666.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1666.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1666.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1666.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8999417,
            71.24826896,
            0.9019068137,
            -156.8859322,
            71.25272031,
            1.481906814
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.89939163544395,
                  71.24826896085078,
                  0.901906813685951
                ],
                [
                  -156.8999417317775,
                  71.25252208946925,
                  0.901906813685951
                ],
                [
                  -156.88647971535167,
                  71.252720306807,
                  1.481906813685951
                ],
                [
                  -156.88593216620905,
                  71.24846713496672,
                  1.481906813685951
                ],
                [
                  -156.89939163544395,
                  71.24826896085078,
                  0.901906813685951
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1666.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1666.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:45Z",
            "pc:count": 1519297,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106351.6959,
                "count": 1519297,
                "maximum": -106117.2986,
                "minimum": -106612.8386,
                "name": "X",
                "position": 0,
                "stddev": 127.6110825,
                "variance": 16284.58839
              },
              {
                "average": 2363813.766,
                "count": 1519297,
                "maximum": 2364061.519,
                "minimum": 2363597.999,
                "name": "Y",
                "position": 1,
                "stddev": 123.6337527,
                "variance": 15285.3048
              },
              {
                "average": 1.177463074,
                "count": 1519297,
                "maximum": 1.481906814,
                "minimum": 0.9019068137,
                "name": "Z",
                "position": 2,
                "stddev": 0.05907135666,
                "variance": 0.003489425178
              },
              {
                "average": 16209.65946,
                "count": 1519297,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12693.78038,
                "variance": 161132060.3
              },
              {
                "average": 1,
                "count": 1519297,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1519297,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.494318754,
                "count": 1519297,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999678869,
                "variance": 0.249967888
              },
              {
                "average": 0.0009043656375,
                "count": 1519297,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03005908107,
                "variance": 0.000903548355
              },
              {
                "average": 7.886933891,
                "count": 1519297,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.225093718,
                "variance": 4.951042056
              },
              {
                "average": 2.198119699,
                "count": 1519297,
                "maximum": 16.23600006,
                "minimum": -19.88999939,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.222082775,
                "variance": 52.15847961
              },
              {
                "average": 0.4819024852,
                "count": 1519297,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996725371,
                "variance": 0.2496726443
              },
              {
                "average": 410.0550097,
                "count": 1519297,
                "maximum": 465,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 11.32959056,
                "variance": 128.3596222
              },
              {
                "average": 220428609.2,
                "count": 1519297,
                "maximum": 220726325.9,
                "minimum": 220414852.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 61298.57173,
                "variance": 3757514896
              },
              {
                "average": 0.4819024852,
                "count": 1519297,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996725371,
                "variance": 0.2496726443
              },
              {
                "average": 0,
                "count": 1519297,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1519297,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1519297,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03799717896,
                "count": 1519297,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1911894804,
                "variance": 0.03655341741
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106612.8386,
              2363597.999,
              0.9019068137,
              -106117.2986,
              2364061.519,
              1.481906814
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106612.83855593862,
                    2363597.9994146926,
                    0.901906813685951
                  ],
                  [
                    -106612.83855593862,
                    2364061.519414692,
                    0.901906813685951
                  ],
                  [
                    -106117.29855593861,
                    2364061.519414692,
                    1.481906813685951
                  ],
                  [
                    -106117.29855593861,
                    2363597.9994146926,
                    1.481906813685951
                  ],
                  [
                    -106612.83855593862,
                    2363597.9994146926,
                    0.901906813685951
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:45+00:00",
            "end_time": "2018-09-08T04:07:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1724.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83540562314275,
              71.25198281833342,
              1.960712184122229
            ],
            [
              -156.83595549528485,
              71.25632964622577,
              1.960712184122229
            ],
            [
              -156.82254715391045,
              71.25652267560841,
              10.860712184122228
            ],
            [
              -156.82199987527528,
              71.252175804689,
              10.860712184122228
            ],
            [
              -156.83540562314275,
              71.25198281833342,
              1.960712184122229
            ]
          ]
        ]
      },
      "bbox": [
        -156.8359555,
        71.25198282,
        1.960712184,
        -156.8219999,
        71.25652268,
        10.86071218
      ],
      "properties": {
        "datetime": "2018-09-08T05:18:49Z",
        "pc:count": 2402909,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103947.2453,
            "count": 2402909,
            "maximum": -103750.7511,
            "minimum": -104244.2111,
            "name": "X",
            "position": 0,
            "stddev": 119.1777767,
            "variance": 14203.34246
          },
          {
            "average": 2364149.23,
            "count": 2402909,
            "maximum": 2364374.107,
            "minimum": 2363900.407,
            "name": "Y",
            "position": 1,
            "stddev": 125.4623395,
            "variance": 15740.79863
          },
          {
            "average": 7.611288902,
            "count": 2402909,
            "maximum": 10.86071218,
            "minimum": 1.960712184,
            "name": "Z",
            "position": 2,
            "stddev": 2.858955048,
            "variance": 8.173623967
          },
          {
            "average": 44998.02251,
            "count": 2402909,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11449.07288,
            "variance": 131081269.7
          },
          {
            "average": 1,
            "count": 2402909,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2402909,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4983272359,
            "count": 2402909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973059,
            "variance": 0.2499973059
          },
          {
            "average": 0.0003982672669,
            "count": 2402909,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01995266438,
            "variance": 0.0003981088157
          },
          {
            "average": 1.686189531,
            "count": 2402909,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.739513745,
            "variance": 3.025908069
          },
          {
            "average": 0.6332255003,
            "count": 2402909,
            "maximum": 16.31399918,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.795389734,
            "variance": 95.94966005
          },
          {
            "average": 0.4716936846,
            "count": 2402909,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991982134,
            "variance": 0.2491988562
          },
          {
            "average": 411.1506216,
            "count": 2402909,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8962100387,
            "variance": 0.8031924335
          },
          {
            "average": 220417937.8,
            "count": 2402909,
            "maximum": 220419129.6,
            "minimum": 220416904.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 522.1070526,
            "variance": 272595.7744
          },
          {
            "average": 0.4716936846,
            "count": 2402909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991982134,
            "variance": 0.2491988562
          },
          {
            "average": 0,
            "count": 2402909,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2402909,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2402909,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1891644669,
            "count": 2402909,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3916392922,
            "variance": 0.1533813352
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104244.2111,
          2363900.407,
          1.960712184,
          -103750.7511,
          2364374.107,
          10.86071218
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104244.21111368388,
                2363900.4073030655,
                1.960712184122229
              ],
              [
                -104244.21111368388,
                2364374.1073030657,
                1.960712184122229
              ],
              [
                -103750.75111368389,
                2364374.1073030657,
                10.860712184122228
              ],
              [
                -103750.75111368389,
                2363900.4073030655,
                10.860712184122228
              ],
              [
                -104244.21111368388,
                2363900.4073030655,
                1.960712184122229
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:18:49+00:00",
        "end_time": "2018-09-08T04:41:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1724.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1724.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1724.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1724.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8359555,
            71.25198282,
            1.960712184,
            -156.8219999,
            71.25652268,
            10.86071218
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83540562314275,
                  71.25198281833342,
                  1.960712184122229
                ],
                [
                  -156.83595549528485,
                  71.25632964622577,
                  1.960712184122229
                ],
                [
                  -156.82254715391045,
                  71.25652267560841,
                  10.860712184122228
                ],
                [
                  -156.82199987527528,
                  71.252175804689,
                  10.860712184122228
                ],
                [
                  -156.83540562314275,
                  71.25198281833342,
                  1.960712184122229
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1724.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1724.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:18:49Z",
            "pc:count": 2402909,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103947.2453,
                "count": 2402909,
                "maximum": -103750.7511,
                "minimum": -104244.2111,
                "name": "X",
                "position": 0,
                "stddev": 119.1777767,
                "variance": 14203.34246
              },
              {
                "average": 2364149.23,
                "count": 2402909,
                "maximum": 2364374.107,
                "minimum": 2363900.407,
                "name": "Y",
                "position": 1,
                "stddev": 125.4623395,
                "variance": 15740.79863
              },
              {
                "average": 7.611288902,
                "count": 2402909,
                "maximum": 10.86071218,
                "minimum": 1.960712184,
                "name": "Z",
                "position": 2,
                "stddev": 2.858955048,
                "variance": 8.173623967
              },
              {
                "average": 44998.02251,
                "count": 2402909,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11449.07288,
                "variance": 131081269.7
              },
              {
                "average": 1,
                "count": 2402909,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2402909,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4983272359,
                "count": 2402909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973059,
                "variance": 0.2499973059
              },
              {
                "average": 0.0003982672669,
                "count": 2402909,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01995266438,
                "variance": 0.0003981088157
              },
              {
                "average": 1.686189531,
                "count": 2402909,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.739513745,
                "variance": 3.025908069
              },
              {
                "average": 0.6332255003,
                "count": 2402909,
                "maximum": 16.31399918,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.795389734,
                "variance": 95.94966005
              },
              {
                "average": 0.4716936846,
                "count": 2402909,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991982134,
                "variance": 0.2491988562
              },
              {
                "average": 411.1506216,
                "count": 2402909,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8962100387,
                "variance": 0.8031924335
              },
              {
                "average": 220417937.8,
                "count": 2402909,
                "maximum": 220419129.6,
                "minimum": 220416904.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 522.1070526,
                "variance": 272595.7744
              },
              {
                "average": 0.4716936846,
                "count": 2402909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991982134,
                "variance": 0.2491988562
              },
              {
                "average": 0,
                "count": 2402909,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2402909,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2402909,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1891644669,
                "count": 2402909,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3916392922,
                "variance": 0.1533813352
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104244.2111,
              2363900.407,
              1.960712184,
              -103750.7511,
              2364374.107,
              10.86071218
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104244.21111368388,
                    2363900.4073030655,
                    1.960712184122229
                  ],
                  [
                    -104244.21111368388,
                    2364374.1073030657,
                    1.960712184122229
                  ],
                  [
                    -103750.75111368389,
                    2364374.1073030657,
                    10.860712184122228
                  ],
                  [
                    -103750.75111368389,
                    2363900.4073030655,
                    10.860712184122228
                  ],
                  [
                    -104244.21111368388,
                    2363900.4073030655,
                    1.960712184122229
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:18:49+00:00",
            "end_time": "2018-09-08T04:41:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1888.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7327556416788,
              71.26361417615485,
              3.93001852647302
            ],
            [
              -156.73328593806593,
              71.26796199232105,
              3.93001852647302
            ],
            [
              -156.71981104669143,
              71.26814884754978,
              11.85001852647302
            ],
            [
              -156.71928335876314,
              71.26380098969533,
              11.85001852647302
            ],
            [
              -156.7327556416788,
              71.26361417615485,
              3.93001852647302
            ]
          ]
        ]
      },
      "bbox": [
        -156.7332859,
        71.26361418,
        3.930018526,
        -156.7192834,
        71.26814885,
        11.85001853
      ],
      "properties": {
        "datetime": "2018-09-11T18:13:12Z",
        "pc:count": 3210170,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100170.2505,
            "count": 3210170,
            "maximum": -99924.72137,
            "minimum": -100420.3414,
            "name": "X",
            "position": 0,
            "stddev": 136.822296,
            "variance": 18720.3407
          },
          {
            "average": 2365240.586,
            "count": 3210170,
            "maximum": 2365481.215,
            "minimum": 2365007.475,
            "name": "Y",
            "position": 1,
            "stddev": 127.8885461,
            "variance": 16355.48021
          },
          {
            "average": 8.875505124,
            "count": 3210170,
            "maximum": 11.85001853,
            "minimum": 3.930018526,
            "name": "Z",
            "position": 2,
            "stddev": 1.413019319,
            "variance": 1.996623595
          },
          {
            "average": 48724.70489,
            "count": 3210170,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7658.28942,
            "variance": 58649396.84
          },
          {
            "average": 1.000362286,
            "count": 3210170,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0190303697,
            "variance": 0.000362154971
          },
          {
            "average": 1.000725195,
            "count": 3210170,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02691968715,
            "variance": 0.0007246695565
          },
          {
            "average": 0.496019837,
            "count": 3210170,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999842359,
            "variance": 0.2499842362
          },
          {
            "average": 0.0005155490208,
            "count": 3210170,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02269985442,
            "variance": 0.0005152833905
          },
          {
            "average": 1.299414361,
            "count": 3210170,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4628041313,
            "variance": 0.214187664
          },
          {
            "average": 1.915842351,
            "count": 3210170,
            "maximum": 20.66399956,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.24033692,
            "variance": 126.345174
          },
          {
            "average": 0.4784952199,
            "count": 3210170,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995374082,
            "variance": 0.2495376222
          },
          {
            "average": 421.5538953,
            "count": 3210170,
            "maximum": 462,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.96348695,
            "variance": 254.8329156
          },
          {
            "average": 220461124.3,
            "count": 3210170,
            "maximum": 220724792.1,
            "minimum": 220419062.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 103908.0954,
            "variance": 10796892300.0
          },
          {
            "average": 0.4784952199,
            "count": 3210170,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995374082,
            "variance": 0.2495376222
          },
          {
            "average": 0,
            "count": 3210170,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3210170,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3210170,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2486276428,
            "count": 3210170,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4322175334,
            "variance": 0.1868119962
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100420.3414,
          2365007.475,
          3.930018526,
          -99924.72137,
          2365481.215,
          11.85001853
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100420.34137282807,
                2365007.4753112528,
                3.93001852647302
              ],
              [
                -100420.34137282807,
                2365481.215311253,
                3.93001852647302
              ],
              [
                -99924.72137282808,
                2365481.215311253,
                11.85001852647302
              ],
              [
                -99924.72137282808,
                2365007.4753112528,
                11.85001852647302
              ],
              [
                -100420.34137282807,
                2365007.4753112528,
                3.93001852647302
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:13:12+00:00",
        "end_time": "2018-09-08T05:17:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1888.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1888.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1888.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1888.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7332859,
            71.26361418,
            3.930018526,
            -156.7192834,
            71.26814885,
            11.85001853
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7327556416788,
                  71.26361417615485,
                  3.93001852647302
                ],
                [
                  -156.73328593806593,
                  71.26796199232105,
                  3.93001852647302
                ],
                [
                  -156.71981104669143,
                  71.26814884754978,
                  11.85001852647302
                ],
                [
                  -156.71928335876314,
                  71.26380098969533,
                  11.85001852647302
                ],
                [
                  -156.7327556416788,
                  71.26361417615485,
                  3.93001852647302
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1888.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1888.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:13:12Z",
            "pc:count": 3210170,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100170.2505,
                "count": 3210170,
                "maximum": -99924.72137,
                "minimum": -100420.3414,
                "name": "X",
                "position": 0,
                "stddev": 136.822296,
                "variance": 18720.3407
              },
              {
                "average": 2365240.586,
                "count": 3210170,
                "maximum": 2365481.215,
                "minimum": 2365007.475,
                "name": "Y",
                "position": 1,
                "stddev": 127.8885461,
                "variance": 16355.48021
              },
              {
                "average": 8.875505124,
                "count": 3210170,
                "maximum": 11.85001853,
                "minimum": 3.930018526,
                "name": "Z",
                "position": 2,
                "stddev": 1.413019319,
                "variance": 1.996623595
              },
              {
                "average": 48724.70489,
                "count": 3210170,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7658.28942,
                "variance": 58649396.84
              },
              {
                "average": 1.000362286,
                "count": 3210170,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0190303697,
                "variance": 0.000362154971
              },
              {
                "average": 1.000725195,
                "count": 3210170,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02691968715,
                "variance": 0.0007246695565
              },
              {
                "average": 0.496019837,
                "count": 3210170,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999842359,
                "variance": 0.2499842362
              },
              {
                "average": 0.0005155490208,
                "count": 3210170,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02269985442,
                "variance": 0.0005152833905
              },
              {
                "average": 1.299414361,
                "count": 3210170,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4628041313,
                "variance": 0.214187664
              },
              {
                "average": 1.915842351,
                "count": 3210170,
                "maximum": 20.66399956,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.24033692,
                "variance": 126.345174
              },
              {
                "average": 0.4784952199,
                "count": 3210170,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995374082,
                "variance": 0.2495376222
              },
              {
                "average": 421.5538953,
                "count": 3210170,
                "maximum": 462,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.96348695,
                "variance": 254.8329156
              },
              {
                "average": 220461124.3,
                "count": 3210170,
                "maximum": 220724792.1,
                "minimum": 220419062.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 103908.0954,
                "variance": 10796892300.0
              },
              {
                "average": 0.4784952199,
                "count": 3210170,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995374082,
                "variance": 0.2495376222
              },
              {
                "average": 0,
                "count": 3210170,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3210170,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3210170,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2486276428,
                "count": 3210170,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4322175334,
                "variance": 0.1868119962
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100420.3414,
              2365007.475,
              3.930018526,
              -99924.72137,
              2365481.215,
              11.85001853
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100420.34137282807,
                    2365007.4753112528,
                    3.93001852647302
                  ],
                  [
                    -100420.34137282807,
                    2365481.215311253,
                    3.93001852647302
                  ],
                  [
                    -99924.72137282808,
                    2365481.215311253,
                    11.85001852647302
                  ],
                  [
                    -99924.72137282808,
                    2365007.4753112528,
                    11.85001852647302
                  ],
                  [
                    -100420.34137282807,
                    2365007.4753112528,
                    3.93001852647302
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:13:12+00:00",
            "end_time": "2018-09-08T05:17:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1982.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71947055889962,
              71.271721548736,
              9.220205059280826
            ],
            [
              -156.71999833590274,
              71.27606853618663,
              9.220205059280826
            ],
            [
              -156.70651410834537,
              71.27625455114854,
              13.220205059280826
            ],
            [
              -156.70598894195544,
              71.27190752218567,
              13.220205059280826
            ],
            [
              -156.71947055889962,
              71.271721548736,
              9.220205059280826
            ]
          ]
        ]
      },
      "bbox": [
        -156.7199983,
        71.27172155,
        9.220205059,
        -156.7059889,
        71.27625455,
        13.22020506
      ],
      "properties": {
        "datetime": "2018-09-11T18:11:02Z",
        "pc:count": 3044418,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99649.75238,
            "count": 3044418,
            "maximum": -99400.5166,
            "minimum": -99896.2966,
            "name": "X",
            "position": 0,
            "stddev": 135.5592793,
            "variance": 18376.3182
          },
          {
            "average": 2366102.863,
            "count": 3044418,
            "maximum": 2366342.94,
            "minimum": 2365869.32,
            "name": "Y",
            "position": 1,
            "stddev": 128.2448551,
            "variance": 16446.74287
          },
          {
            "average": 11.87857471,
            "count": 3044418,
            "maximum": 13.22020506,
            "minimum": 9.220205059,
            "name": "Z",
            "position": 2,
            "stddev": 0.8108521728,
            "variance": 0.6574812461
          },
          {
            "average": 46076.03455,
            "count": 3044418,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9588.255469,
            "variance": 91934642.93
          },
          {
            "average": 1,
            "count": 3044418,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3044418,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5015868386,
            "count": 3044418,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999975641,
            "variance": 0.2499975641
          },
          {
            "average": 0.0004417921586,
            "count": 3044418,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02101421241,
            "variance": 0.0004415971234
          },
          {
            "average": 1.302945588,
            "count": 3044418,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.460388205,
            "variance": 0.2119572993
          },
          {
            "average": 1.768626417,
            "count": 3044418,
            "maximum": 16.67399979,
            "minimum": -19.64999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.69829185,
            "variance": 114.4534486
          },
          {
            "average": 0.5358456033,
            "count": 3044418,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987135194,
            "variance": 0.2487151744
          },
          {
            "average": 414.3783124,
            "count": 3044418,
            "maximum": 461,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.616247969,
            "variance": 2.612257496
          },
          {
            "average": 220419924,
            "count": 3044418,
            "maximum": 220724662.9,
            "minimum": 220419041.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 8267.639753,
            "variance": 68353867.08
          },
          {
            "average": 0.5358456033,
            "count": 3044418,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987135194,
            "variance": 0.2487151744
          },
          {
            "average": 0,
            "count": 3044418,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3044418,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3044418,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2770476984,
            "count": 3044418,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4475403189,
            "variance": 0.200292337
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99896.2966,
          2365869.32,
          9.220205059,
          -99400.5166,
          2366342.94,
          13.22020506
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99896.29659819868,
                2365869.319674317,
                9.220205059280826
              ],
              [
                -99896.29659819868,
                2366342.939674317,
                9.220205059280826
              ],
              [
                -99400.51659819868,
                2366342.939674317,
                13.220205059280826
              ],
              [
                -99400.51659819868,
                2365869.319674317,
                13.220205059280826
              ],
              [
                -99896.29659819868,
                2365869.319674317,
                9.220205059280826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:11:02+00:00",
        "end_time": "2018-09-08T05:17:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1982.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1982.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1982.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1982.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7199983,
            71.27172155,
            9.220205059,
            -156.7059889,
            71.27625455,
            13.22020506
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71947055889962,
                  71.271721548736,
                  9.220205059280826
                ],
                [
                  -156.71999833590274,
                  71.27606853618663,
                  9.220205059280826
                ],
                [
                  -156.70651410834537,
                  71.27625455114854,
                  13.220205059280826
                ],
                [
                  -156.70598894195544,
                  71.27190752218567,
                  13.220205059280826
                ],
                [
                  -156.71947055889962,
                  71.271721548736,
                  9.220205059280826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1982.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1982.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:11:02Z",
            "pc:count": 3044418,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99649.75238,
                "count": 3044418,
                "maximum": -99400.5166,
                "minimum": -99896.2966,
                "name": "X",
                "position": 0,
                "stddev": 135.5592793,
                "variance": 18376.3182
              },
              {
                "average": 2366102.863,
                "count": 3044418,
                "maximum": 2366342.94,
                "minimum": 2365869.32,
                "name": "Y",
                "position": 1,
                "stddev": 128.2448551,
                "variance": 16446.74287
              },
              {
                "average": 11.87857471,
                "count": 3044418,
                "maximum": 13.22020506,
                "minimum": 9.220205059,
                "name": "Z",
                "position": 2,
                "stddev": 0.8108521728,
                "variance": 0.6574812461
              },
              {
                "average": 46076.03455,
                "count": 3044418,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9588.255469,
                "variance": 91934642.93
              },
              {
                "average": 1,
                "count": 3044418,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3044418,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5015868386,
                "count": 3044418,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999975641,
                "variance": 0.2499975641
              },
              {
                "average": 0.0004417921586,
                "count": 3044418,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02101421241,
                "variance": 0.0004415971234
              },
              {
                "average": 1.302945588,
                "count": 3044418,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.460388205,
                "variance": 0.2119572993
              },
              {
                "average": 1.768626417,
                "count": 3044418,
                "maximum": 16.67399979,
                "minimum": -19.64999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.69829185,
                "variance": 114.4534486
              },
              {
                "average": 0.5358456033,
                "count": 3044418,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987135194,
                "variance": 0.2487151744
              },
              {
                "average": 414.3783124,
                "count": 3044418,
                "maximum": 461,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.616247969,
                "variance": 2.612257496
              },
              {
                "average": 220419924,
                "count": 3044418,
                "maximum": 220724662.9,
                "minimum": 220419041.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 8267.639753,
                "variance": 68353867.08
              },
              {
                "average": 0.5358456033,
                "count": 3044418,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987135194,
                "variance": 0.2487151744
              },
              {
                "average": 0,
                "count": 3044418,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3044418,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3044418,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2770476984,
                "count": 3044418,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4475403189,
                "variance": 0.200292337
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99896.2966,
              2365869.32,
              9.220205059,
              -99400.5166,
              2366342.94,
              13.22020506
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99896.29659819868,
                    2365869.319674317,
                    9.220205059280826
                  ],
                  [
                    -99896.29659819868,
                    2366342.939674317,
                    9.220205059280826
                  ],
                  [
                    -99400.51659819868,
                    2366342.939674317,
                    13.220205059280826
                  ],
                  [
                    -99400.51659819868,
                    2365869.319674317,
                    13.220205059280826
                  ],
                  [
                    -99896.29659819868,
                    2365869.319674317,
                    9.220205059280826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:11:02+00:00",
            "end_time": "2018-09-08T05:17:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1667.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8866550762389,
              71.24819336812574,
              0.897883791331329
            ],
            [
              -156.88721471553458,
              71.25253939047991,
              0.897883791331329
            ],
            [
              -156.8737520334336,
              71.25273674438698,
              11.357883791331329
            ],
            [
              -156.87319499712666,
              71.24839067805954,
              11.357883791331329
            ],
            [
              -156.8866550762389,
              71.24819336812574,
              0.897883791331329
            ]
          ]
        ]
      },
      "bbox": [
        -156.8872147,
        71.24819337,
        0.8978837913,
        -156.873195,
        71.25273674,
        11.35788379
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:38Z",
        "pc:count": 2290638,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105883.6084,
            "count": 2290638,
            "maximum": -105649.5989,
            "minimum": -106145.1589,
            "name": "X",
            "position": 0,
            "stddev": 124.1198389,
            "variance": 15405.7344
          },
          {
            "average": 2363761.391,
            "count": 2290638,
            "maximum": 2364043.015,
            "minimum": 2363569.375,
            "name": "Y",
            "position": 1,
            "stddev": 128.8381792,
            "variance": 16599.27643
          },
          {
            "average": 4.807180324,
            "count": 2290638,
            "maximum": 11.35788379,
            "minimum": 0.8978837913,
            "name": "Z",
            "position": 2,
            "stddev": 3.567068914,
            "variance": 12.72398063
          },
          {
            "average": 32381.66512,
            "count": 2290638,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 17654.61182,
            "variance": 311685318.4
          },
          {
            "average": 1,
            "count": 2290638,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2290638,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.50680902,
            "count": 2290638,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999537442,
            "variance": 0.2499537464
          },
          {
            "average": 0.0005404607799,
            "count": 2290638,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02324153433,
            "variance": 0.0005401689179
          },
          {
            "average": 3.23822184,
            "count": 2290638,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.296044394,
            "variance": 10.86390864
          },
          {
            "average": -2.153984888,
            "count": 2290638,
            "maximum": 16.33799934,
            "minimum": -19.76399994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.03760738,
            "variance": 100.7535618
          },
          {
            "average": 0.4986907578,
            "count": 2290638,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499998395,
            "variance": 0.249998395
          },
          {
            "average": 414.3499008,
            "count": 2290638,
            "maximum": 465,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.97778605,
            "variance": 288.2452191
          },
          {
            "average": 220447753.1,
            "count": 2290638,
            "maximum": 220726318.8,
            "minimum": 220415780.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 93266.27806,
            "variance": 8698598623
          },
          {
            "average": 0.4986907578,
            "count": 2290638,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499998395,
            "variance": 0.249998395
          },
          {
            "average": 0,
            "count": 2290638,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2290638,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2290638,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1607071916,
            "count": 2290638,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3672607372,
            "variance": 0.1348804491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106145.1589,
          2363569.375,
          0.8978837913,
          -105649.5989,
          2364043.015,
          11.35788379
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106145.15885170692,
                2363569.374850111,
                0.897883791331329
              ],
              [
                -106145.15885170692,
                2364043.0148501107,
                0.897883791331329
              ],
              [
                -105649.59885170692,
                2364043.0148501107,
                11.357883791331329
              ],
              [
                -105649.59885170692,
                2363569.374850111,
                11.357883791331329
              ],
              [
                -106145.15885170692,
                2363569.374850111,
                0.897883791331329
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:38+00:00",
        "end_time": "2018-09-08T04:23:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1667.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1667.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1667.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1667.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8872147,
            71.24819337,
            0.8978837913,
            -156.873195,
            71.25273674,
            11.35788379
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8866550762389,
                  71.24819336812574,
                  0.897883791331329
                ],
                [
                  -156.88721471553458,
                  71.25253939047991,
                  0.897883791331329
                ],
                [
                  -156.8737520334336,
                  71.25273674438698,
                  11.357883791331329
                ],
                [
                  -156.87319499712666,
                  71.24839067805954,
                  11.357883791331329
                ],
                [
                  -156.8866550762389,
                  71.24819336812574,
                  0.897883791331329
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1667.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1667.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:38Z",
            "pc:count": 2290638,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105883.6084,
                "count": 2290638,
                "maximum": -105649.5989,
                "minimum": -106145.1589,
                "name": "X",
                "position": 0,
                "stddev": 124.1198389,
                "variance": 15405.7344
              },
              {
                "average": 2363761.391,
                "count": 2290638,
                "maximum": 2364043.015,
                "minimum": 2363569.375,
                "name": "Y",
                "position": 1,
                "stddev": 128.8381792,
                "variance": 16599.27643
              },
              {
                "average": 4.807180324,
                "count": 2290638,
                "maximum": 11.35788379,
                "minimum": 0.8978837913,
                "name": "Z",
                "position": 2,
                "stddev": 3.567068914,
                "variance": 12.72398063
              },
              {
                "average": 32381.66512,
                "count": 2290638,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 17654.61182,
                "variance": 311685318.4
              },
              {
                "average": 1,
                "count": 2290638,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2290638,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.50680902,
                "count": 2290638,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999537442,
                "variance": 0.2499537464
              },
              {
                "average": 0.0005404607799,
                "count": 2290638,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02324153433,
                "variance": 0.0005401689179
              },
              {
                "average": 3.23822184,
                "count": 2290638,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.296044394,
                "variance": 10.86390864
              },
              {
                "average": -2.153984888,
                "count": 2290638,
                "maximum": 16.33799934,
                "minimum": -19.76399994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.03760738,
                "variance": 100.7535618
              },
              {
                "average": 0.4986907578,
                "count": 2290638,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499998395,
                "variance": 0.249998395
              },
              {
                "average": 414.3499008,
                "count": 2290638,
                "maximum": 465,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.97778605,
                "variance": 288.2452191
              },
              {
                "average": 220447753.1,
                "count": 2290638,
                "maximum": 220726318.8,
                "minimum": 220415780.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 93266.27806,
                "variance": 8698598623
              },
              {
                "average": 0.4986907578,
                "count": 2290638,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499998395,
                "variance": 0.249998395
              },
              {
                "average": 0,
                "count": 2290638,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2290638,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2290638,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1607071916,
                "count": 2290638,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3672607372,
                "variance": 0.1348804491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106145.1589,
              2363569.375,
              0.8978837913,
              -105649.5989,
              2364043.015,
              11.35788379
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106145.15885170692,
                    2363569.374850111,
                    0.897883791331329
                  ],
                  [
                    -106145.15885170692,
                    2364043.0148501107,
                    0.897883791331329
                  ],
                  [
                    -105649.59885170692,
                    2364043.0148501107,
                    11.357883791331329
                  ],
                  [
                    -105649.59885170692,
                    2363569.374850111,
                    11.357883791331329
                  ],
                  [
                    -106145.15885170692,
                    2363569.374850111,
                    0.897883791331329
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:38+00:00",
            "end_time": "2018-09-08T04:23:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2142.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79471003761256,
              71.29271152013003,
              0.876244304410413
            ],
            [
              -156.795252962372,
              71.29705928518005,
              0.876244304410413
            ],
            [
              -156.78176053782755,
              71.29725042923766,
              32.91624430441041
            ],
            [
              -156.7812202275685,
              71.29290262147138,
              32.91624430441041
            ],
            [
              -156.79471003761256,
              71.29271152013003,
              0.876244304410413
            ]
          ]
        ]
      },
      "bbox": [
        -156.795253,
        71.29271152,
        0.8762443044,
        -156.7812202,
        71.29725043,
        32.9162443
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:29Z",
        "pc:count": 1985696,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102296.9225,
            "count": 1985696,
            "maximum": -102066.7493,
            "minimum": -102562.3893,
            "name": "X",
            "position": 0,
            "stddev": 133.1389184,
            "variance": 17725.9716
          },
          {
            "average": 2368483.488,
            "count": 1985696,
            "maximum": 2368740.585,
            "minimum": 2368266.925,
            "name": "Y",
            "position": 1,
            "stddev": 129.2431305,
            "variance": 16703.78677
          },
          {
            "average": 2.123456133,
            "count": 1985696,
            "maximum": 32.9162443,
            "minimum": 0.8762443044,
            "name": "Z",
            "position": 2,
            "stddev": 1.566620935,
            "variance": 2.454301155
          },
          {
            "average": 19322.98034,
            "count": 1985696,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11514.70436,
            "variance": 132588416.6
          },
          {
            "average": 1.006792077,
            "count": 1985696,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08278719015,
            "variance": 0.006853718853
          },
          {
            "average": 1.013588183,
            "count": 1985696,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1171573985,
            "variance": 0.01372585601
          },
          {
            "average": 0.5058745145,
            "count": 1985696,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999656148,
            "variance": 0.249965616
          },
          {
            "average": 0.0006284949962,
            "count": 1985696,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02506192943,
            "variance": 0.0006281003066
          },
          {
            "average": 5.257601365,
            "count": 1985696,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.648933493,
            "variance": 13.31471564
          },
          {
            "average": -2.129050338,
            "count": 1985696,
            "maximum": 16.31999969,
            "minimum": -15.68400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.347195874,
            "variance": 69.67567895
          },
          {
            "average": 0.4906410649,
            "count": 1985696,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999125285,
            "variance": 0.2499125362
          },
          {
            "average": 404.7405454,
            "count": 1985696,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7596281934,
            "variance": 0.5770349923
          },
          {
            "average": 220414326.8,
            "count": 1985696,
            "maximum": 220414969.5,
            "minimum": 220413445.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 449.1408459,
            "variance": 201727.4995
          },
          {
            "average": 0.4906410649,
            "count": 1985696,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999125285,
            "variance": 0.2499125362
          },
          {
            "average": 0,
            "count": 1985696,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1985696,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1985696,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07966526598,
            "count": 1985696,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2707743494,
            "variance": 0.0733187483
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102562.3893,
          2368266.925,
          0.8762443044,
          -102066.7493,
          2368740.585,
          32.9162443
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102562.38931398185,
                2368266.9253789685,
                0.876244304410413
              ],
              [
                -102562.38931398185,
                2368740.5853789686,
                0.876244304410413
              ],
              [
                -102066.74931398184,
                2368740.5853789686,
                32.91624430441041
              ],
              [
                -102066.74931398184,
                2368266.9253789685,
                32.91624430441041
              ],
              [
                -102562.38931398185,
                2368266.9253789685,
                0.876244304410413
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:29+00:00",
        "end_time": "2018-09-08T03:44:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2142.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2142.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2142.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2142.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.795253,
            71.29271152,
            0.8762443044,
            -156.7812202,
            71.29725043,
            32.9162443
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79471003761256,
                  71.29271152013003,
                  0.876244304410413
                ],
                [
                  -156.795252962372,
                  71.29705928518005,
                  0.876244304410413
                ],
                [
                  -156.78176053782755,
                  71.29725042923766,
                  32.91624430441041
                ],
                [
                  -156.7812202275685,
                  71.29290262147138,
                  32.91624430441041
                ],
                [
                  -156.79471003761256,
                  71.29271152013003,
                  0.876244304410413
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2142.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2142.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:29Z",
            "pc:count": 1985696,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102296.9225,
                "count": 1985696,
                "maximum": -102066.7493,
                "minimum": -102562.3893,
                "name": "X",
                "position": 0,
                "stddev": 133.1389184,
                "variance": 17725.9716
              },
              {
                "average": 2368483.488,
                "count": 1985696,
                "maximum": 2368740.585,
                "minimum": 2368266.925,
                "name": "Y",
                "position": 1,
                "stddev": 129.2431305,
                "variance": 16703.78677
              },
              {
                "average": 2.123456133,
                "count": 1985696,
                "maximum": 32.9162443,
                "minimum": 0.8762443044,
                "name": "Z",
                "position": 2,
                "stddev": 1.566620935,
                "variance": 2.454301155
              },
              {
                "average": 19322.98034,
                "count": 1985696,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11514.70436,
                "variance": 132588416.6
              },
              {
                "average": 1.006792077,
                "count": 1985696,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08278719015,
                "variance": 0.006853718853
              },
              {
                "average": 1.013588183,
                "count": 1985696,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1171573985,
                "variance": 0.01372585601
              },
              {
                "average": 0.5058745145,
                "count": 1985696,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999656148,
                "variance": 0.249965616
              },
              {
                "average": 0.0006284949962,
                "count": 1985696,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02506192943,
                "variance": 0.0006281003066
              },
              {
                "average": 5.257601365,
                "count": 1985696,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.648933493,
                "variance": 13.31471564
              },
              {
                "average": -2.129050338,
                "count": 1985696,
                "maximum": 16.31999969,
                "minimum": -15.68400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.347195874,
                "variance": 69.67567895
              },
              {
                "average": 0.4906410649,
                "count": 1985696,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999125285,
                "variance": 0.2499125362
              },
              {
                "average": 404.7405454,
                "count": 1985696,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7596281934,
                "variance": 0.5770349923
              },
              {
                "average": 220414326.8,
                "count": 1985696,
                "maximum": 220414969.5,
                "minimum": 220413445.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 449.1408459,
                "variance": 201727.4995
              },
              {
                "average": 0.4906410649,
                "count": 1985696,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999125285,
                "variance": 0.2499125362
              },
              {
                "average": 0,
                "count": 1985696,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1985696,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1985696,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07966526598,
                "count": 1985696,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2707743494,
                "variance": 0.0733187483
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102562.3893,
              2368266.925,
              0.8762443044,
              -102066.7493,
              2368740.585,
              32.9162443
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102562.38931398185,
                    2368266.9253789685,
                    0.876244304410413
                  ],
                  [
                    -102562.38931398185,
                    2368740.5853789686,
                    0.876244304410413
                  ],
                  [
                    -102066.74931398184,
                    2368740.5853789686,
                    32.91624430441041
                  ],
                  [
                    -102066.74931398184,
                    2368266.9253789685,
                    32.91624430441041
                  ],
                  [
                    -102562.38931398185,
                    2368266.9253789685,
                    0.876244304410413
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:29+00:00",
            "end_time": "2018-09-08T03:44:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2057.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65515081397837,
              71.27947078617802,
              -75.33083371489744
            ],
            [
              -156.6556663585171,
              71.28381872166504,
              -75.33083371489744
            ],
            [
              -156.64217204236567,
              71.28400040360324,
              603.6891662851026
            ],
            [
              -156.6416591119351,
              71.27965242754402,
              603.6891662851026
            ],
            [
              -156.65515081397837,
              71.27947078617802,
              -75.33083371489744
            ]
          ]
        ]
      },
      "bbox": [
        -156.6556664,
        71.27947079,
        -75.33083371,
        -156.6416591,
        71.2840004,
        603.6891663
      ],
      "properties": {
        "datetime": "2018-09-11T17:58:38Z",
        "pc:count": 4200698,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97247.97827,
            "count": 4200698,
            "maximum": -97005.18854,
            "minimum": -97501.14854,
            "name": "X",
            "position": 0,
            "stddev": 134.867929,
            "variance": 18189.35826
          },
          {
            "average": 2366853.254,
            "count": 4200698,
            "maximum": 2367090.308,
            "minimum": 2366616.628,
            "name": "Y",
            "position": 1,
            "stddev": 125.8768848,
            "variance": 15844.99012
          },
          {
            "average": 5.891056192,
            "count": 4200698,
            "maximum": 603.6891663,
            "minimum": -75.33083371,
            "name": "Z",
            "position": 2,
            "stddev": 2.639118245,
            "variance": 6.964945113
          },
          {
            "average": 36197.88163,
            "count": 4200698,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9446.914831,
            "variance": 89244199.82
          },
          {
            "average": 1.000573714,
            "count": 4200698,
            "maximum": 15,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06223212687,
            "variance": 0.003872837615
          },
          {
            "average": 1.00113624,
            "count": 4200698,
            "maximum": 15,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.103735098,
            "variance": 0.01076097056
          },
          {
            "average": 0.5070907264,
            "count": 4200698,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999497786,
            "variance": 0.2499497811
          },
          {
            "average": 0.0005539555569,
            "count": 4200698,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02352974335,
            "variance": 0.000553648822
          },
          {
            "average": 1.259384512,
            "count": 4200698,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4524696721,
            "variance": 0.2047288042
          },
          {
            "average": -2.417399947,
            "count": 4200698,
            "maximum": 16.41600037,
            "minimum": -19.74600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.21171248,
            "variance": 125.7024968
          },
          {
            "average": 0.5046304209,
            "count": 4200698,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999786183,
            "variance": 0.2499786187
          },
          {
            "average": 427.9216452,
            "count": 4200698,
            "maximum": 459,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.36869601,
            "variance": 337.4089931
          },
          {
            "average": 220501416.5,
            "count": 4200698,
            "maximum": 220723918.3,
            "minimum": 220420073.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133629.6707,
            "variance": 17856888880.0
          },
          {
            "average": 0.5046304209,
            "count": 4200698,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999786183,
            "variance": 0.2499786187
          },
          {
            "average": 0,
            "count": 4200698,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4200698,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4200698,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.231392021,
            "count": 4200698,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4217224158,
            "variance": 0.177849796
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97501.14854,
          2366616.628,
          -75.33083371,
          -97005.18854,
          2367090.308,
          603.6891663
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97501.14854303858,
                2366616.6284147426,
                -75.33083371489744
              ],
              [
                -97501.14854303858,
                2367090.3084147424,
                -75.33083371489744
              ],
              [
                -97005.18854303859,
                2367090.3084147424,
                603.6891662851026
              ],
              [
                -97005.18854303859,
                2366616.6284147426,
                603.6891662851026
              ],
              [
                -97501.14854303858,
                2366616.6284147426,
                -75.33083371489744
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:58:38+00:00",
        "end_time": "2018-09-08T05:34:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2057.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2057.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2057.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2057.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6556664,
            71.27947079,
            -75.33083371,
            -156.6416591,
            71.2840004,
            603.6891663
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65515081397837,
                  71.27947078617802,
                  -75.33083371489744
                ],
                [
                  -156.6556663585171,
                  71.28381872166504,
                  -75.33083371489744
                ],
                [
                  -156.64217204236567,
                  71.28400040360324,
                  603.6891662851026
                ],
                [
                  -156.6416591119351,
                  71.27965242754402,
                  603.6891662851026
                ],
                [
                  -156.65515081397837,
                  71.27947078617802,
                  -75.33083371489744
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2057.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2057.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:58:38Z",
            "pc:count": 4200698,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97247.97827,
                "count": 4200698,
                "maximum": -97005.18854,
                "minimum": -97501.14854,
                "name": "X",
                "position": 0,
                "stddev": 134.867929,
                "variance": 18189.35826
              },
              {
                "average": 2366853.254,
                "count": 4200698,
                "maximum": 2367090.308,
                "minimum": 2366616.628,
                "name": "Y",
                "position": 1,
                "stddev": 125.8768848,
                "variance": 15844.99012
              },
              {
                "average": 5.891056192,
                "count": 4200698,
                "maximum": 603.6891663,
                "minimum": -75.33083371,
                "name": "Z",
                "position": 2,
                "stddev": 2.639118245,
                "variance": 6.964945113
              },
              {
                "average": 36197.88163,
                "count": 4200698,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9446.914831,
                "variance": 89244199.82
              },
              {
                "average": 1.000573714,
                "count": 4200698,
                "maximum": 15,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06223212687,
                "variance": 0.003872837615
              },
              {
                "average": 1.00113624,
                "count": 4200698,
                "maximum": 15,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.103735098,
                "variance": 0.01076097056
              },
              {
                "average": 0.5070907264,
                "count": 4200698,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999497786,
                "variance": 0.2499497811
              },
              {
                "average": 0.0005539555569,
                "count": 4200698,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02352974335,
                "variance": 0.000553648822
              },
              {
                "average": 1.259384512,
                "count": 4200698,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4524696721,
                "variance": 0.2047288042
              },
              {
                "average": -2.417399947,
                "count": 4200698,
                "maximum": 16.41600037,
                "minimum": -19.74600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.21171248,
                "variance": 125.7024968
              },
              {
                "average": 0.5046304209,
                "count": 4200698,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999786183,
                "variance": 0.2499786187
              },
              {
                "average": 427.9216452,
                "count": 4200698,
                "maximum": 459,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.36869601,
                "variance": 337.4089931
              },
              {
                "average": 220501416.5,
                "count": 4200698,
                "maximum": 220723918.3,
                "minimum": 220420073.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133629.6707,
                "variance": 17856888880.0
              },
              {
                "average": 0.5046304209,
                "count": 4200698,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999786183,
                "variance": 0.2499786187
              },
              {
                "average": 0,
                "count": 4200698,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4200698,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4200698,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.231392021,
                "count": 4200698,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4217224158,
                "variance": 0.177849796
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97501.14854,
              2366616.628,
              -75.33083371,
              -97005.18854,
              2367090.308,
              603.6891663
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97501.14854303858,
                    2366616.6284147426,
                    -75.33083371489744
                  ],
                  [
                    -97501.14854303858,
                    2367090.3084147424,
                    -75.33083371489744
                  ],
                  [
                    -97005.18854303859,
                    2367090.3084147424,
                    603.6891662851026
                  ],
                  [
                    -97005.18854303859,
                    2366616.6284147426,
                    603.6891662851026
                  ],
                  [
                    -97501.14854303858,
                    2366616.6284147426,
                    -75.33083371489744
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:58:38+00:00",
            "end_time": "2018-09-08T05:34:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1833.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78399859864524,
              71.25985290149659,
              9.024846477206138
            ],
            [
              -156.78453874242254,
              71.2642004684153,
              9.024846477206138
            ],
            [
              -156.77106762901704,
              71.26439081401857,
              14.904846477206137
            ],
            [
              -156.7705300922793,
              71.26004320464457,
              14.904846477206137
            ],
            [
              -156.78399859864524,
              71.25985290149659,
              9.024846477206138
            ]
          ]
        ]
      },
      "bbox": [
        -156.7845387,
        71.2598529,
        9.024846477,
        -156.7705301,
        71.26439081,
        14.90484648
      ],
      "properties": {
        "datetime": "2018-09-08T05:36:04Z",
        "pc:count": 3267835,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102072.907,
            "count": 3267835,
            "maximum": -101823.8503,
            "minimum": -102319.4303,
            "name": "X",
            "position": 0,
            "stddev": 133.663768,
            "variance": 17866.00288
          },
          {
            "average": 2364913.661,
            "count": 3267835,
            "maximum": 2365150.291,
            "minimum": 2364676.551,
            "name": "Y",
            "position": 1,
            "stddev": 126.8978156,
            "variance": 16103.05561
          },
          {
            "average": 11.09258529,
            "count": 3267835,
            "maximum": 14.90484648,
            "minimum": 9.024846477,
            "name": "Z",
            "position": 2,
            "stddev": 1.131533522,
            "variance": 1.280368111
          },
          {
            "average": 42093.99594,
            "count": 3267835,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10501.40125,
            "variance": 110279428.2
          },
          {
            "average": 1.000000918,
            "count": 3267835,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009581432281,
            "variance": 9.180384456e-07
          },
          {
            "average": 1.000001836,
            "count": 3267835,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001355018526,
            "variance": 1.836075206e-06
          },
          {
            "average": 0.5013285555,
            "count": 3267835,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983114,
            "variance": 0.2499983114
          },
          {
            "average": 0.0004216859174,
            "count": 3267835,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02053066554,
            "variance": 0.0004215082274
          },
          {
            "average": 1.284235587,
            "count": 3267835,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4513236522,
            "variance": 0.203693039
          },
          {
            "average": 1.668332813,
            "count": 3267835,
            "maximum": 16.3920002,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53412343,
            "variance": 110.9677565
          },
          {
            "average": 0.5270143688,
            "count": 3267835,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992697669,
            "variance": 0.2492703002
          },
          {
            "average": 412.7777926,
            "count": 3267835,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9784894165,
            "variance": 0.9574415382
          },
          {
            "average": 220418825.2,
            "count": 3267835,
            "maximum": 220420164.6,
            "minimum": 220417987.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 515.1178066,
            "variance": 265346.3547
          },
          {
            "average": 0.5270143688,
            "count": 3267835,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992697669,
            "variance": 0.2492703002
          },
          {
            "average": 0,
            "count": 3267835,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3267835,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3267835,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.266297105,
            "count": 3267835,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4420215115,
            "variance": 0.1953830166
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102319.4303,
          2364676.551,
          9.024846477,
          -101823.8503,
          2365150.291,
          14.90484648
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102319.43025395334,
                2364676.5514118066,
                9.024846477206138
              ],
              [
                -102319.43025395334,
                2365150.291411807,
                9.024846477206138
              ],
              [
                -101823.85025395335,
                2365150.291411807,
                14.904846477206137
              ],
              [
                -101823.85025395335,
                2364676.5514118066,
                14.904846477206137
              ],
              [
                -102319.43025395334,
                2364676.5514118066,
                9.024846477206138
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:36:04+00:00",
        "end_time": "2018-09-08T04:59:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1833.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1833.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1833.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1833.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7845387,
            71.2598529,
            9.024846477,
            -156.7705301,
            71.26439081,
            14.90484648
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78399859864524,
                  71.25985290149659,
                  9.024846477206138
                ],
                [
                  -156.78453874242254,
                  71.2642004684153,
                  9.024846477206138
                ],
                [
                  -156.77106762901704,
                  71.26439081401857,
                  14.904846477206137
                ],
                [
                  -156.7705300922793,
                  71.26004320464457,
                  14.904846477206137
                ],
                [
                  -156.78399859864524,
                  71.25985290149659,
                  9.024846477206138
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1833.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1833.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:36:04Z",
            "pc:count": 3267835,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102072.907,
                "count": 3267835,
                "maximum": -101823.8503,
                "minimum": -102319.4303,
                "name": "X",
                "position": 0,
                "stddev": 133.663768,
                "variance": 17866.00288
              },
              {
                "average": 2364913.661,
                "count": 3267835,
                "maximum": 2365150.291,
                "minimum": 2364676.551,
                "name": "Y",
                "position": 1,
                "stddev": 126.8978156,
                "variance": 16103.05561
              },
              {
                "average": 11.09258529,
                "count": 3267835,
                "maximum": 14.90484648,
                "minimum": 9.024846477,
                "name": "Z",
                "position": 2,
                "stddev": 1.131533522,
                "variance": 1.280368111
              },
              {
                "average": 42093.99594,
                "count": 3267835,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10501.40125,
                "variance": 110279428.2
              },
              {
                "average": 1.000000918,
                "count": 3267835,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009581432281,
                "variance": 9.180384456e-07
              },
              {
                "average": 1.000001836,
                "count": 3267835,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001355018526,
                "variance": 1.836075206e-06
              },
              {
                "average": 0.5013285555,
                "count": 3267835,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983114,
                "variance": 0.2499983114
              },
              {
                "average": 0.0004216859174,
                "count": 3267835,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02053066554,
                "variance": 0.0004215082274
              },
              {
                "average": 1.284235587,
                "count": 3267835,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4513236522,
                "variance": 0.203693039
              },
              {
                "average": 1.668332813,
                "count": 3267835,
                "maximum": 16.3920002,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53412343,
                "variance": 110.9677565
              },
              {
                "average": 0.5270143688,
                "count": 3267835,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992697669,
                "variance": 0.2492703002
              },
              {
                "average": 412.7777926,
                "count": 3267835,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9784894165,
                "variance": 0.9574415382
              },
              {
                "average": 220418825.2,
                "count": 3267835,
                "maximum": 220420164.6,
                "minimum": 220417987.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 515.1178066,
                "variance": 265346.3547
              },
              {
                "average": 0.5270143688,
                "count": 3267835,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992697669,
                "variance": 0.2492703002
              },
              {
                "average": 0,
                "count": 3267835,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3267835,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3267835,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.266297105,
                "count": 3267835,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4420215115,
                "variance": 0.1953830166
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102319.4303,
              2364676.551,
              9.024846477,
              -101823.8503,
              2365150.291,
              14.90484648
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102319.43025395334,
                    2364676.5514118066,
                    9.024846477206138
                  ],
                  [
                    -102319.43025395334,
                    2365150.291411807,
                    9.024846477206138
                  ],
                  [
                    -101823.85025395335,
                    2365150.291411807,
                    14.904846477206137
                  ],
                  [
                    -101823.85025395335,
                    2364676.5514118066,
                    14.904846477206137
                  ],
                  [
                    -102319.43025395334,
                    2364676.5514118066,
                    9.024846477206138
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:36:04+00:00",
            "end_time": "2018-09-08T04:59:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1563.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8361996781928,
              71.23969023544225,
              6.758951971363421
            ],
            [
              -156.8367494725596,
              71.24403725396589,
              6.758951971363421
            ],
            [
              -156.82328927992154,
              71.2442311727475,
              13.498951971363422
            ],
            [
              -156.82274208799086,
              71.23988411102728,
              13.498951971363422
            ],
            [
              -156.8361996781928,
              71.23969023544225,
              6.758951971363421
            ]
          ]
        ]
      },
      "bbox": [
        -156.8367495,
        71.23969024,
        6.758951971,
        -156.8227421,
        71.24423117,
        13.49895197
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:55Z",
        "pc:count": 4389058,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104078.1862,
            "count": 4389058,
            "maximum": -103834.8904,
            "minimum": -104330.5304,
            "name": "X",
            "position": 0,
            "stddev": 133.9423734,
            "variance": 17940.55938
          },
          {
            "average": 2362801.646,
            "count": 4389058,
            "maximum": 2363038.184,
            "minimum": 2362564.424,
            "name": "Y",
            "position": 1,
            "stddev": 126.7137557,
            "variance": 16056.37588
          },
          {
            "average": 11.46095585,
            "count": 4389058,
            "maximum": 13.49895197,
            "minimum": 6.758951971,
            "name": "Z",
            "position": 2,
            "stddev": 1.142131636,
            "variance": 1.304464674
          },
          {
            "average": 47307.01172,
            "count": 4389058,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 9713.758115,
            "variance": 94357096.72
          },
          {
            "average": 1,
            "count": 4389058,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4389058,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4946346118,
            "count": 4389058,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999712687,
            "variance": 0.2499712696
          },
          {
            "average": 0.0004780068981,
            "count": 4389058,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02185814531,
            "variance": 0.0004777785163
          },
          {
            "average": 1.273355695,
            "count": 4389058,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4469306372,
            "variance": 0.1997469945
          },
          {
            "average": 2.849939545,
            "count": 4389058,
            "maximum": 20.74799919,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12668921,
            "variance": 123.8032128
          },
          {
            "average": 0.4833857288,
            "count": 4389058,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997239467,
            "variance": 0.2497240229
          },
          {
            "average": 426.8515577,
            "count": 4389058,
            "maximum": 466,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.46122999,
            "variance": 504.5068525
          },
          {
            "average": 220496737.1,
            "count": 4389058,
            "maximum": 220726515,
            "minimum": 220418246.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133230.8635,
            "variance": 17750462990.0
          },
          {
            "average": 0.4833857288,
            "count": 4389058,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997239467,
            "variance": 0.2497240229
          },
          {
            "average": 0,
            "count": 4389058,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4389058,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4389058,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2326496939,
            "count": 4389058,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4225208332,
            "variance": 0.1785238545
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104330.5304,
          2362564.424,
          6.758951971,
          -103834.8904,
          2363038.184,
          13.49895197
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104330.53042274131,
                2362564.4239613735,
                6.758951971363421
              ],
              [
                -104330.53042274131,
                2363038.1839613733,
                6.758951971363421
              ],
              [
                -103834.8904227413,
                2363038.1839613733,
                13.498951971363422
              ],
              [
                -103834.8904227413,
                2362564.4239613735,
                13.498951971363422
              ],
              [
                -104330.53042274131,
                2362564.4239613735,
                6.758951971363421
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:55+00:00",
        "end_time": "2018-09-08T05:04:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1563.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1563.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1563.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1563.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8367495,
            71.23969024,
            6.758951971,
            -156.8227421,
            71.24423117,
            13.49895197
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8361996781928,
                  71.23969023544225,
                  6.758951971363421
                ],
                [
                  -156.8367494725596,
                  71.24403725396589,
                  6.758951971363421
                ],
                [
                  -156.82328927992154,
                  71.2442311727475,
                  13.498951971363422
                ],
                [
                  -156.82274208799086,
                  71.23988411102728,
                  13.498951971363422
                ],
                [
                  -156.8361996781928,
                  71.23969023544225,
                  6.758951971363421
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1563.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1563.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:55Z",
            "pc:count": 4389058,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104078.1862,
                "count": 4389058,
                "maximum": -103834.8904,
                "minimum": -104330.5304,
                "name": "X",
                "position": 0,
                "stddev": 133.9423734,
                "variance": 17940.55938
              },
              {
                "average": 2362801.646,
                "count": 4389058,
                "maximum": 2363038.184,
                "minimum": 2362564.424,
                "name": "Y",
                "position": 1,
                "stddev": 126.7137557,
                "variance": 16056.37588
              },
              {
                "average": 11.46095585,
                "count": 4389058,
                "maximum": 13.49895197,
                "minimum": 6.758951971,
                "name": "Z",
                "position": 2,
                "stddev": 1.142131636,
                "variance": 1.304464674
              },
              {
                "average": 47307.01172,
                "count": 4389058,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 9713.758115,
                "variance": 94357096.72
              },
              {
                "average": 1,
                "count": 4389058,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4389058,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4946346118,
                "count": 4389058,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999712687,
                "variance": 0.2499712696
              },
              {
                "average": 0.0004780068981,
                "count": 4389058,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02185814531,
                "variance": 0.0004777785163
              },
              {
                "average": 1.273355695,
                "count": 4389058,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4469306372,
                "variance": 0.1997469945
              },
              {
                "average": 2.849939545,
                "count": 4389058,
                "maximum": 20.74799919,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12668921,
                "variance": 123.8032128
              },
              {
                "average": 0.4833857288,
                "count": 4389058,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997239467,
                "variance": 0.2497240229
              },
              {
                "average": 426.8515577,
                "count": 4389058,
                "maximum": 466,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.46122999,
                "variance": 504.5068525
              },
              {
                "average": 220496737.1,
                "count": 4389058,
                "maximum": 220726515,
                "minimum": 220418246.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133230.8635,
                "variance": 17750462990.0
              },
              {
                "average": 0.4833857288,
                "count": 4389058,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997239467,
                "variance": 0.2497240229
              },
              {
                "average": 0,
                "count": 4389058,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4389058,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4389058,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2326496939,
                "count": 4389058,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4225208332,
                "variance": 0.1785238545
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104330.5304,
              2362564.424,
              6.758951971,
              -103834.8904,
              2363038.184,
              13.49895197
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104330.53042274131,
                    2362564.4239613735,
                    6.758951971363421
                  ],
                  [
                    -104330.53042274131,
                    2363038.1839613733,
                    6.758951971363421
                  ],
                  [
                    -103834.8904227413,
                    2363038.1839613733,
                    13.498951971363422
                  ],
                  [
                    -103834.8904227413,
                    2362564.4239613735,
                    13.498951971363422
                  ],
                  [
                    -104330.53042274131,
                    2362564.4239613735,
                    6.758951971363421
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:55+00:00",
            "end_time": "2018-09-08T05:04:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1776.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84795902435016,
              71.25615706114091,
              6.976299433698165
            ],
            [
              -156.84851138564952,
              71.26050360843759,
              6.976299433698165
            ],
            [
              -156.83504304096866,
              71.2606983303086,
              14.676299433698164
            ],
            [
              -156.8344932849842,
              71.25635173959998,
              14.676299433698164
            ],
            [
              -156.84795902435016,
              71.25615706114091,
              6.976299433698165
            ]
          ]
        ]
      },
      "bbox": [
        -156.8485114,
        71.25615706,
        6.976299434,
        -156.8344933,
        71.26069833,
        14.67629943
      ],
      "properties": {
        "datetime": "2018-09-08T05:00:30Z",
        "pc:count": 2833833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104438.3521,
            "count": 2833833,
            "maximum": -104190.3931,
            "minimum": -104685.9731,
            "name": "X",
            "position": 0,
            "stddev": 137.9767507,
            "variance": 19037.58372
          },
          {
            "average": 2364612.921,
            "count": 2833833,
            "maximum": 2364847.876,
            "minimum": 2364374.216,
            "name": "Y",
            "position": 1,
            "stddev": 129.0389563,
            "variance": 16651.05224
          },
          {
            "average": 9.991127044,
            "count": 2833833,
            "maximum": 14.67629943,
            "minimum": 6.976299434,
            "name": "Z",
            "position": 2,
            "stddev": 0.3390434278,
            "variance": 0.1149504459
          },
          {
            "average": 43236.86463,
            "count": 2833833,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10032.94912,
            "variance": 100660068
          },
          {
            "average": 1.000096689,
            "count": 2833833,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00983257425,
            "variance": 9.667951638e-05
          },
          {
            "average": 1.000192319,
            "count": 2833833,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01386658236,
            "variance": 0.0001922821064
          },
          {
            "average": 0.5007546316,
            "count": 2833833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995188,
            "variance": 0.2499995188
          },
          {
            "average": 0.0004689761182,
            "count": 2833833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02165078163,
            "variance": 0.000468756345
          },
          {
            "average": 1.313385439,
            "count": 2833833,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4664943782,
            "variance": 0.2176170049
          },
          {
            "average": -1.327743531,
            "count": 2833833,
            "maximum": 16.3560009,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.42084321,
            "variance": 108.5939733
          },
          {
            "average": 0.4568494333,
            "count": 2833833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981346366,
            "variance": 0.2481381162
          },
          {
            "average": 409.2989114,
            "count": 2833833,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9820376233,
            "variance": 0.9643978937
          },
          {
            "average": 220416900.8,
            "count": 2833833,
            "maximum": 220418030.8,
            "minimum": 220416011,
            "name": "GpsTime",
            "position": 12,
            "stddev": 613.0443181,
            "variance": 375823.3359
          },
          {
            "average": 0.4568494333,
            "count": 2833833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981346366,
            "variance": 0.2481381162
          },
          {
            "average": 0,
            "count": 2833833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2833833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2833833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2373619052,
            "count": 2833833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.425465974,
            "variance": 0.1810212951
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104685.9731,
          2364374.216,
          6.976299434,
          -104190.3931,
          2364847.876,
          14.67629943
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104685.97312032865,
                2364374.2159174504,
                6.976299433698165
              ],
              [
                -104685.97312032865,
                2364847.8759174505,
                6.976299433698165
              ],
              [
                -104190.39312032866,
                2364847.8759174505,
                14.676299433698164
              ],
              [
                -104190.39312032866,
                2364374.2159174504,
                14.676299433698164
              ],
              [
                -104685.97312032865,
                2364374.2159174504,
                6.976299433698165
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:00:30+00:00",
        "end_time": "2018-09-08T04:26:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1776.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1776.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1776.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1776.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8485114,
            71.25615706,
            6.976299434,
            -156.8344933,
            71.26069833,
            14.67629943
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84795902435016,
                  71.25615706114091,
                  6.976299433698165
                ],
                [
                  -156.84851138564952,
                  71.26050360843759,
                  6.976299433698165
                ],
                [
                  -156.83504304096866,
                  71.2606983303086,
                  14.676299433698164
                ],
                [
                  -156.8344932849842,
                  71.25635173959998,
                  14.676299433698164
                ],
                [
                  -156.84795902435016,
                  71.25615706114091,
                  6.976299433698165
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1776.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1776.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:00:30Z",
            "pc:count": 2833833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104438.3521,
                "count": 2833833,
                "maximum": -104190.3931,
                "minimum": -104685.9731,
                "name": "X",
                "position": 0,
                "stddev": 137.9767507,
                "variance": 19037.58372
              },
              {
                "average": 2364612.921,
                "count": 2833833,
                "maximum": 2364847.876,
                "minimum": 2364374.216,
                "name": "Y",
                "position": 1,
                "stddev": 129.0389563,
                "variance": 16651.05224
              },
              {
                "average": 9.991127044,
                "count": 2833833,
                "maximum": 14.67629943,
                "minimum": 6.976299434,
                "name": "Z",
                "position": 2,
                "stddev": 0.3390434278,
                "variance": 0.1149504459
              },
              {
                "average": 43236.86463,
                "count": 2833833,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10032.94912,
                "variance": 100660068
              },
              {
                "average": 1.000096689,
                "count": 2833833,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00983257425,
                "variance": 9.667951638e-05
              },
              {
                "average": 1.000192319,
                "count": 2833833,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01386658236,
                "variance": 0.0001922821064
              },
              {
                "average": 0.5007546316,
                "count": 2833833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995188,
                "variance": 0.2499995188
              },
              {
                "average": 0.0004689761182,
                "count": 2833833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02165078163,
                "variance": 0.000468756345
              },
              {
                "average": 1.313385439,
                "count": 2833833,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4664943782,
                "variance": 0.2176170049
              },
              {
                "average": -1.327743531,
                "count": 2833833,
                "maximum": 16.3560009,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.42084321,
                "variance": 108.5939733
              },
              {
                "average": 0.4568494333,
                "count": 2833833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981346366,
                "variance": 0.2481381162
              },
              {
                "average": 409.2989114,
                "count": 2833833,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9820376233,
                "variance": 0.9643978937
              },
              {
                "average": 220416900.8,
                "count": 2833833,
                "maximum": 220418030.8,
                "minimum": 220416011,
                "name": "GpsTime",
                "position": 12,
                "stddev": 613.0443181,
                "variance": 375823.3359
              },
              {
                "average": 0.4568494333,
                "count": 2833833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981346366,
                "variance": 0.2481381162
              },
              {
                "average": 0,
                "count": 2833833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2833833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2833833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2373619052,
                "count": 2833833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.425465974,
                "variance": 0.1810212951
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104685.9731,
              2364374.216,
              6.976299434,
              -104190.3931,
              2364847.876,
              14.67629943
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104685.97312032865,
                    2364374.2159174504,
                    6.976299433698165
                  ],
                  [
                    -104685.97312032865,
                    2364847.8759174505,
                    6.976299433698165
                  ],
                  [
                    -104190.39312032866,
                    2364847.8759174505,
                    14.676299433698164
                  ],
                  [
                    -104190.39312032866,
                    2364374.2159174504,
                    14.676299433698164
                  ],
                  [
                    -104685.97312032865,
                    2364374.2159174504,
                    6.976299433698165
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:00:30+00:00",
            "end_time": "2018-09-08T04:26:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1889.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72000949455696,
              71.26352776654338,
              9.465651846075222
            ],
            [
              -156.72053718315777,
              71.2678745131292,
              9.465651846075222
            ],
            [
              -156.707058976021,
              71.26806053995725,
              18.245651846075223
            ],
            [
              -156.70653389591158,
              71.26371375187843,
              18.245651846075223
            ],
            [
              -156.72000949455696,
              71.26352776654338,
              9.465651846075222
            ]
          ]
        ]
      },
      "bbox": [
        -156.7205372,
        71.26352777,
        9.465651846,
        -156.7065339,
        71.26806054,
        18.24565185
      ],
      "properties": {
        "datetime": "2018-09-11T18:13:19Z",
        "pc:count": 3617347,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99699.8706,
            "count": 3617347,
            "maximum": -99456.86752,
            "minimum": -99952.60752,
            "name": "X",
            "position": 0,
            "stddev": 135.363316,
            "variance": 18323.22732
          },
          {
            "average": 2365204.916,
            "count": 3617347,
            "maximum": 2365452.467,
            "minimum": 2364978.847,
            "name": "Y",
            "position": 1,
            "stddev": 124.7763317,
            "variance": 15569.13295
          },
          {
            "average": 11.42041598,
            "count": 3617347,
            "maximum": 18.24565185,
            "minimum": 9.465651846,
            "name": "Z",
            "position": 2,
            "stddev": 0.6921102805,
            "variance": 0.4790166404
          },
          {
            "average": 44205.79377,
            "count": 3617347,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10821.08671,
            "variance": 117095917.6
          },
          {
            "average": 1.000620897,
            "count": 3617347,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0249322576,
            "variance": 0.0006216174691
          },
          {
            "average": 1.001242623,
            "count": 3617347,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03527601128,
            "variance": 0.001244396972
          },
          {
            "average": 0.4975184852,
            "count": 3617347,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999939112,
            "variance": 0.2499939112
          },
          {
            "average": 0.0005252468176,
            "count": 3617347,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02291224735,
            "variance": 0.0005249710785
          },
          {
            "average": 1.276392616,
            "count": 3617347,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4531136447,
            "variance": 0.205311975
          },
          {
            "average": 3.144748301,
            "count": 3617347,
            "maximum": 20.50799942,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.33115671,
            "variance": 128.3951123
          },
          {
            "average": 0.518072499,
            "count": 3617347,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996733471,
            "variance": 0.2496734538
          },
          {
            "average": 421.8560766,
            "count": 3617347,
            "maximum": 462,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.17647792,
            "variance": 230.3254821
          },
          {
            "average": 220458596,
            "count": 3617347,
            "maximum": 220724799.2,
            "minimum": 220419409.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 100451.013,
            "variance": 10090406020.0
          },
          {
            "average": 0.518072499,
            "count": 3617347,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996733471,
            "variance": 0.2496734538
          },
          {
            "average": 0,
            "count": 3617347,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3617347,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3617347,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.291088469,
            "count": 3617347,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4542642725,
            "variance": 0.2063560293
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99952.60752,
          2364978.847,
          9.465651846,
          -99456.86752,
          2365452.467,
          18.24565185
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99952.60751639563,
                2364978.847239855,
                9.465651846075222
              ],
              [
                -99952.60751639563,
                2365452.4672398553,
                9.465651846075222
              ],
              [
                -99456.86751639564,
                2365452.4672398553,
                18.245651846075223
              ],
              [
                -99456.86751639564,
                2364978.847239855,
                18.245651846075223
              ],
              [
                -99952.60751639563,
                2364978.847239855,
                9.465651846075222
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:13:19+00:00",
        "end_time": "2018-09-08T05:23:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1889.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1889.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1889.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1889.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7205372,
            71.26352777,
            9.465651846,
            -156.7065339,
            71.26806054,
            18.24565185
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72000949455696,
                  71.26352776654338,
                  9.465651846075222
                ],
                [
                  -156.72053718315777,
                  71.2678745131292,
                  9.465651846075222
                ],
                [
                  -156.707058976021,
                  71.26806053995725,
                  18.245651846075223
                ],
                [
                  -156.70653389591158,
                  71.26371375187843,
                  18.245651846075223
                ],
                [
                  -156.72000949455696,
                  71.26352776654338,
                  9.465651846075222
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1889.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1889.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:13:19Z",
            "pc:count": 3617347,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99699.8706,
                "count": 3617347,
                "maximum": -99456.86752,
                "minimum": -99952.60752,
                "name": "X",
                "position": 0,
                "stddev": 135.363316,
                "variance": 18323.22732
              },
              {
                "average": 2365204.916,
                "count": 3617347,
                "maximum": 2365452.467,
                "minimum": 2364978.847,
                "name": "Y",
                "position": 1,
                "stddev": 124.7763317,
                "variance": 15569.13295
              },
              {
                "average": 11.42041598,
                "count": 3617347,
                "maximum": 18.24565185,
                "minimum": 9.465651846,
                "name": "Z",
                "position": 2,
                "stddev": 0.6921102805,
                "variance": 0.4790166404
              },
              {
                "average": 44205.79377,
                "count": 3617347,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10821.08671,
                "variance": 117095917.6
              },
              {
                "average": 1.000620897,
                "count": 3617347,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0249322576,
                "variance": 0.0006216174691
              },
              {
                "average": 1.001242623,
                "count": 3617347,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03527601128,
                "variance": 0.001244396972
              },
              {
                "average": 0.4975184852,
                "count": 3617347,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999939112,
                "variance": 0.2499939112
              },
              {
                "average": 0.0005252468176,
                "count": 3617347,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02291224735,
                "variance": 0.0005249710785
              },
              {
                "average": 1.276392616,
                "count": 3617347,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4531136447,
                "variance": 0.205311975
              },
              {
                "average": 3.144748301,
                "count": 3617347,
                "maximum": 20.50799942,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.33115671,
                "variance": 128.3951123
              },
              {
                "average": 0.518072499,
                "count": 3617347,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996733471,
                "variance": 0.2496734538
              },
              {
                "average": 421.8560766,
                "count": 3617347,
                "maximum": 462,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.17647792,
                "variance": 230.3254821
              },
              {
                "average": 220458596,
                "count": 3617347,
                "maximum": 220724799.2,
                "minimum": 220419409.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 100451.013,
                "variance": 10090406020.0
              },
              {
                "average": 0.518072499,
                "count": 3617347,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996733471,
                "variance": 0.2496734538
              },
              {
                "average": 0,
                "count": 3617347,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3617347,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3617347,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.291088469,
                "count": 3617347,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4542642725,
                "variance": 0.2063560293
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99952.60752,
              2364978.847,
              9.465651846,
              -99456.86752,
              2365452.467,
              18.24565185
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99952.60751639563,
                    2364978.847239855,
                    9.465651846075222
                  ],
                  [
                    -99952.60751639563,
                    2365452.4672398553,
                    9.465651846075222
                  ],
                  [
                    -99456.86751639564,
                    2365452.4672398553,
                    18.245651846075223
                  ],
                  [
                    -99456.86751639564,
                    2364978.847239855,
                    18.245651846075223
                  ],
                  [
                    -99952.60751639563,
                    2364978.847239855,
                    9.465651846075222
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:13:19+00:00",
            "end_time": "2018-09-08T05:23:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1668.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8739186653013,
              71.24811738908859,
              1.949168184055495
            ],
            [
              -156.87447595269077,
              71.25246436301006,
              1.949168184055495
            ],
            [
              -156.86101157403303,
              71.25266086830682,
              16.629168184055494
            ],
            [
              -156.86045689056616,
              71.24831385059177,
              16.629168184055494
            ],
            [
              -156.8739186653013,
              71.24811738908859,
              1.949168184055495
            ]
          ]
        ]
      },
      "bbox": [
        -156.874476,
        71.24811739,
        1.949168184,
        -156.8604569,
        71.25266087,
        16.62916818
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:31Z",
        "pc:count": 2102176,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105425.0823,
            "count": 2102176,
            "maximum": -105181.8594,
            "minimum": -105677.4794,
            "name": "X",
            "position": 0,
            "stddev": 140.4952592,
            "variance": 19738.91786
          },
          {
            "average": 2363724.492,
            "count": 2102176,
            "maximum": 2364014.538,
            "minimum": 2363540.798,
            "name": "Y",
            "position": 1,
            "stddev": 126.7557236,
            "variance": 16067.01346
          },
          {
            "average": 6.512553224,
            "count": 2102176,
            "maximum": 16.62916818,
            "minimum": 1.949168184,
            "name": "Z",
            "position": 2,
            "stddev": 3.318400283,
            "variance": 11.01178044
          },
          {
            "average": 42921.0021,
            "count": 2102176,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14204.98583,
            "variance": 201781622.4
          },
          {
            "average": 1.000001427,
            "count": 2102176,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00119460928,
            "variance": 1.427091331e-06
          },
          {
            "average": 1.000002854,
            "count": 2102176,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00168943144,
            "variance": 2.854178589e-06
          },
          {
            "average": 0.5013600193,
            "count": 2102176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999982693,
            "variance": 0.2499982693
          },
          {
            "average": 0.0007730085397,
            "count": 2102176,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02779228967,
            "variance": 0.000772411365
          },
          {
            "average": 3.037539673,
            "count": 2102176,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.209831141,
            "variance": 10.30301595
          },
          {
            "average": -2.115703583,
            "count": 2102176,
            "maximum": 16.32600021,
            "minimum": -19.62000084,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.2139021,
            "variance": 104.3237962
          },
          {
            "average": 0.4613757364,
            "count": 2102176,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985060526,
            "variance": 0.2485082845
          },
          {
            "average": 415.9832588,
            "count": 2102176,
            "maximum": 465,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.81115673,
            "variance": 317.2373041
          },
          {
            "average": 220453073.6,
            "count": 2102176,
            "maximum": 220726311.6,
            "minimum": 220415989.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 99177.51454,
            "variance": 9836179391
          },
          {
            "average": 0.4613757364,
            "count": 2102176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985060526,
            "variance": 0.2485082845
          },
          {
            "average": 0,
            "count": 2102176,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2102176,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2102176,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1873040126,
            "count": 2102176,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3901554714,
            "variance": 0.1522212919
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105677.4794,
          2363540.798,
          1.949168184,
          -105181.8594,
          2364014.538,
          16.62916818
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105677.47935774378,
                2363540.798120033,
                1.949168184055495
              ],
              [
                -105677.47935774378,
                2364014.538120033,
                1.949168184055495
              ],
              [
                -105181.85935774379,
                2364014.538120033,
                16.629168184055494
              ],
              [
                -105181.85935774379,
                2363540.798120033,
                16.629168184055494
              ],
              [
                -105677.47935774378,
                2363540.798120033,
                1.949168184055495
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:31+00:00",
        "end_time": "2018-09-08T04:26:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1668.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1668.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1668.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1668.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.874476,
            71.24811739,
            1.949168184,
            -156.8604569,
            71.25266087,
            16.62916818
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8739186653013,
                  71.24811738908859,
                  1.949168184055495
                ],
                [
                  -156.87447595269077,
                  71.25246436301006,
                  1.949168184055495
                ],
                [
                  -156.86101157403303,
                  71.25266086830682,
                  16.629168184055494
                ],
                [
                  -156.86045689056616,
                  71.24831385059177,
                  16.629168184055494
                ],
                [
                  -156.8739186653013,
                  71.24811738908859,
                  1.949168184055495
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1668.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1668.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:31Z",
            "pc:count": 2102176,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105425.0823,
                "count": 2102176,
                "maximum": -105181.8594,
                "minimum": -105677.4794,
                "name": "X",
                "position": 0,
                "stddev": 140.4952592,
                "variance": 19738.91786
              },
              {
                "average": 2363724.492,
                "count": 2102176,
                "maximum": 2364014.538,
                "minimum": 2363540.798,
                "name": "Y",
                "position": 1,
                "stddev": 126.7557236,
                "variance": 16067.01346
              },
              {
                "average": 6.512553224,
                "count": 2102176,
                "maximum": 16.62916818,
                "minimum": 1.949168184,
                "name": "Z",
                "position": 2,
                "stddev": 3.318400283,
                "variance": 11.01178044
              },
              {
                "average": 42921.0021,
                "count": 2102176,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14204.98583,
                "variance": 201781622.4
              },
              {
                "average": 1.000001427,
                "count": 2102176,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00119460928,
                "variance": 1.427091331e-06
              },
              {
                "average": 1.000002854,
                "count": 2102176,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00168943144,
                "variance": 2.854178589e-06
              },
              {
                "average": 0.5013600193,
                "count": 2102176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999982693,
                "variance": 0.2499982693
              },
              {
                "average": 0.0007730085397,
                "count": 2102176,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02779228967,
                "variance": 0.000772411365
              },
              {
                "average": 3.037539673,
                "count": 2102176,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.209831141,
                "variance": 10.30301595
              },
              {
                "average": -2.115703583,
                "count": 2102176,
                "maximum": 16.32600021,
                "minimum": -19.62000084,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.2139021,
                "variance": 104.3237962
              },
              {
                "average": 0.4613757364,
                "count": 2102176,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985060526,
                "variance": 0.2485082845
              },
              {
                "average": 415.9832588,
                "count": 2102176,
                "maximum": 465,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.81115673,
                "variance": 317.2373041
              },
              {
                "average": 220453073.6,
                "count": 2102176,
                "maximum": 220726311.6,
                "minimum": 220415989.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 99177.51454,
                "variance": 9836179391
              },
              {
                "average": 0.4613757364,
                "count": 2102176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985060526,
                "variance": 0.2485082845
              },
              {
                "average": 0,
                "count": 2102176,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2102176,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2102176,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1873040126,
                "count": 2102176,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3901554714,
                "variance": 0.1522212919
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105677.4794,
              2363540.798,
              1.949168184,
              -105181.8594,
              2364014.538,
              16.62916818
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105677.47935774378,
                    2363540.798120033,
                    1.949168184055495
                  ],
                  [
                    -105677.47935774378,
                    2364014.538120033,
                    1.949168184055495
                  ],
                  [
                    -105181.85935774379,
                    2364014.538120033,
                    16.629168184055494
                  ],
                  [
                    -105181.85935774379,
                    2363540.798120033,
                    16.629168184055494
                  ],
                  [
                    -105677.47935774378,
                    2363540.798120033,
                    1.949168184055495
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:31+00:00",
            "end_time": "2018-09-08T04:26:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1983.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7067197034818,
              71.2716336995698,
              9.897945122986412
            ],
            [
              -156.70724513831811,
              71.27598181998441,
              9.897945122986412
            ],
            [
              -156.69376085759507,
              71.27616696098744,
              13.277945122986411
            ],
            [
              -156.69323803409486,
              71.27181879924508,
              13.277945122986411
            ],
            [
              -156.7067197034818,
              71.2716336995698,
              9.897945122986412
            ]
          ]
        ]
      },
      "bbox": [
        -156.7072451,
        71.2716337,
        9.897945123,
        -156.693238,
        71.27616696,
        13.27794512
      ],
      "properties": {
        "datetime": "2018-09-11T18:11:02Z",
        "pc:count": 3265379,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99175.2008,
            "count": 3265379,
            "maximum": -98932.77979,
            "minimum": -99428.55979,
            "name": "X",
            "position": 0,
            "stddev": 136.5500575,
            "variance": 18645.9182
          },
          {
            "average": 2366079.743,
            "count": 3265379,
            "maximum": 2366314.369,
            "minimum": 2365840.629,
            "name": "Y",
            "position": 1,
            "stddev": 129.8258308,
            "variance": 16854.74635
          },
          {
            "average": 11.74970984,
            "count": 3265379,
            "maximum": 13.27794512,
            "minimum": 9.897945123,
            "name": "Z",
            "position": 2,
            "stddev": 0.7940700861,
            "variance": 0.6305473016
          },
          {
            "average": 45427.289,
            "count": 3265379,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9224.832363,
            "variance": 85097532.12
          },
          {
            "average": 1,
            "count": 3265379,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3265379,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5003655012,
            "count": 3265379,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999943,
            "variance": 0.249999943
          },
          {
            "average": 0.0004559960727,
            "count": 3265379,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02134919858,
            "variance": 0.0004557882799
          },
          {
            "average": 1.32443309,
            "count": 3265379,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4683458376,
            "variance": 0.2193478236
          },
          {
            "average": -0.4814801431,
            "count": 3265379,
            "maximum": 16.3920002,
            "minimum": -19.73999977,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.20403947,
            "variance": 104.1224216
          },
          {
            "average": 0.4777742492,
            "count": 3265379,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995058482,
            "variance": 0.2495060924
          },
          {
            "average": 418.2859821,
            "count": 3265379,
            "maximum": 461,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 11.51360223,
            "variance": 132.5630363
          },
          {
            "average": 220441424.1,
            "count": 3265379,
            "maximum": 220724662.4,
            "minimum": 220419040.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 77635.34813,
            "variance": 6027247280
          },
          {
            "average": 0.4777742492,
            "count": 3265379,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995058482,
            "variance": 0.2495060924
          },
          {
            "average": 0,
            "count": 3265379,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3265379,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3265379,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2123716726,
            "count": 3265379,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4089865481,
            "variance": 0.1672699965
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99428.55979,
          2365840.629,
          9.897945123,
          -98932.77979,
          2366314.369,
          13.27794512
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99428.55978925266,
                2365840.6289665718,
                9.897945122986412
              ],
              [
                -99428.55978925266,
                2366314.368966572,
                9.897945122986412
              ],
              [
                -98932.77978925266,
                2366314.368966572,
                13.277945122986411
              ],
              [
                -98932.77978925266,
                2365840.6289665718,
                13.277945122986411
              ],
              [
                -99428.55978925266,
                2365840.6289665718,
                9.897945122986412
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:11:02+00:00",
        "end_time": "2018-09-08T05:17:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1983.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1983.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1983.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1983.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7072451,
            71.2716337,
            9.897945123,
            -156.693238,
            71.27616696,
            13.27794512
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7067197034818,
                  71.2716336995698,
                  9.897945122986412
                ],
                [
                  -156.70724513831811,
                  71.27598181998441,
                  9.897945122986412
                ],
                [
                  -156.69376085759507,
                  71.27616696098744,
                  13.277945122986411
                ],
                [
                  -156.69323803409486,
                  71.27181879924508,
                  13.277945122986411
                ],
                [
                  -156.7067197034818,
                  71.2716336995698,
                  9.897945122986412
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1983.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1983.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:11:02Z",
            "pc:count": 3265379,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99175.2008,
                "count": 3265379,
                "maximum": -98932.77979,
                "minimum": -99428.55979,
                "name": "X",
                "position": 0,
                "stddev": 136.5500575,
                "variance": 18645.9182
              },
              {
                "average": 2366079.743,
                "count": 3265379,
                "maximum": 2366314.369,
                "minimum": 2365840.629,
                "name": "Y",
                "position": 1,
                "stddev": 129.8258308,
                "variance": 16854.74635
              },
              {
                "average": 11.74970984,
                "count": 3265379,
                "maximum": 13.27794512,
                "minimum": 9.897945123,
                "name": "Z",
                "position": 2,
                "stddev": 0.7940700861,
                "variance": 0.6305473016
              },
              {
                "average": 45427.289,
                "count": 3265379,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9224.832363,
                "variance": 85097532.12
              },
              {
                "average": 1,
                "count": 3265379,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3265379,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5003655012,
                "count": 3265379,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999943,
                "variance": 0.249999943
              },
              {
                "average": 0.0004559960727,
                "count": 3265379,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02134919858,
                "variance": 0.0004557882799
              },
              {
                "average": 1.32443309,
                "count": 3265379,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4683458376,
                "variance": 0.2193478236
              },
              {
                "average": -0.4814801431,
                "count": 3265379,
                "maximum": 16.3920002,
                "minimum": -19.73999977,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.20403947,
                "variance": 104.1224216
              },
              {
                "average": 0.4777742492,
                "count": 3265379,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995058482,
                "variance": 0.2495060924
              },
              {
                "average": 418.2859821,
                "count": 3265379,
                "maximum": 461,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 11.51360223,
                "variance": 132.5630363
              },
              {
                "average": 220441424.1,
                "count": 3265379,
                "maximum": 220724662.4,
                "minimum": 220419040.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 77635.34813,
                "variance": 6027247280
              },
              {
                "average": 0.4777742492,
                "count": 3265379,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995058482,
                "variance": 0.2495060924
              },
              {
                "average": 0,
                "count": 3265379,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3265379,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3265379,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2123716726,
                "count": 3265379,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4089865481,
                "variance": 0.1672699965
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99428.55979,
              2365840.629,
              9.897945123,
              -98932.77979,
              2366314.369,
              13.27794512
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99428.55978925266,
                    2365840.6289665718,
                    9.897945122986412
                  ],
                  [
                    -99428.55978925266,
                    2366314.368966572,
                    9.897945122986412
                  ],
                  [
                    -98932.77978925266,
                    2366314.368966572,
                    13.277945122986411
                  ],
                  [
                    -98932.77978925266,
                    2365840.6289665718,
                    13.277945122986411
                  ],
                  [
                    -99428.55978925266,
                    2365840.6289665718,
                    9.897945122986412
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:11:02+00:00",
            "end_time": "2018-09-08T05:17:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2076.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82762130245754,
              71.28484301636071,
              0.882797240616543
            ],
            [
              -156.8280556805274,
              71.28828215398121,
              0.882797240616543
            ],
            [
              -156.82056724362164,
              71.28838964065253,
              1.542797240616543
            ],
            [
              -156.82013401297513,
              71.28495048404004,
              1.542797240616543
            ],
            [
              -156.82762130245754,
              71.28484301636071,
              0.882797240616543
            ]
          ]
        ]
      },
      "bbox": [
        -156.8280557,
        71.28484302,
        0.8827972406,
        -156.820134,
        71.28838964,
        1.542797241
      ],
      "properties": {
        "datetime": "2018-09-08T04:08:57Z",
        "pc:count": 384994,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103630.8849,
            "count": 384994,
            "maximum": -103530.7227,
            "minimum": -103805.9227,
            "name": "X",
            "position": 0,
            "stddev": 62.36625674,
            "variance": 3889.54998
          },
          {
            "average": 2367594.071,
            "count": 384994,
            "maximum": 2367837.03,
            "minimum": 2367462.33,
            "name": "Y",
            "position": 1,
            "stddev": 87.97479935,
            "variance": 7739.565321
          },
          {
            "average": 1.171862603,
            "count": 384994,
            "maximum": 1.542797241,
            "minimum": 0.8827972406,
            "name": "Z",
            "position": 2,
            "stddev": 0.07176673329,
            "variance": 0.005150464006
          },
          {
            "average": 13254.33966,
            "count": 384994,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9791.168161,
            "variance": 95866973.96
          },
          {
            "average": 1,
            "count": 384994,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 384994,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5123456469,
            "count": 384994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998482109,
            "variance": 0.249848234
          },
          {
            "average": 0.0008857280893,
            "count": 384994,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02974803983,
            "variance": 0.0008849458736
          },
          {
            "average": 7.339589708,
            "count": 384994,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.757043047,
            "variance": 7.601286365
          },
          {
            "average": -3.477053923,
            "count": 384994,
            "maximum": 16.26000023,
            "minimum": -12.51000023,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.030530922,
            "variance": 49.42836504
          },
          {
            "average": 0.5013688525,
            "count": 384994,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999987756,
            "variance": 0.2499987756
          },
          {
            "average": 404.35839,
            "count": 384994,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6761488822,
            "variance": 0.4571773109
          },
          {
            "average": 220414124.3,
            "count": 384994,
            "maximum": 220414937.3,
            "minimum": 220413472.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 434.8206904,
            "variance": 189069.0328
          },
          {
            "average": 0.5013688525,
            "count": 384994,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999987756,
            "variance": 0.2499987756
          },
          {
            "average": 0,
            "count": 384994,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 384994,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 384994,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.104037985,
            "count": 384994,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3053102108,
            "variance": 0.0932143248
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103805.9227,
          2367462.33,
          0.8827972406,
          -103530.7227,
          2367837.03,
          1.542797241
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103805.92274363813,
                2367462.3302074405,
                0.882797240616543
              ],
              [
                -103805.92274363813,
                2367837.0302074407,
                0.882797240616543
              ],
              [
                -103530.72274363812,
                2367837.0302074407,
                1.542797240616543
              ],
              [
                -103530.72274363812,
                2367462.3302074405,
                1.542797240616543
              ],
              [
                -103805.92274363813,
                2367462.3302074405,
                0.882797240616543
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:08:57+00:00",
        "end_time": "2018-09-08T03:44:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2076.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2076.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2076.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2076.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8280557,
            71.28484302,
            0.8827972406,
            -156.820134,
            71.28838964,
            1.542797241
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82762130245754,
                  71.28484301636071,
                  0.882797240616543
                ],
                [
                  -156.8280556805274,
                  71.28828215398121,
                  0.882797240616543
                ],
                [
                  -156.82056724362164,
                  71.28838964065253,
                  1.542797240616543
                ],
                [
                  -156.82013401297513,
                  71.28495048404004,
                  1.542797240616543
                ],
                [
                  -156.82762130245754,
                  71.28484301636071,
                  0.882797240616543
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2076.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2076.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:08:57Z",
            "pc:count": 384994,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103630.8849,
                "count": 384994,
                "maximum": -103530.7227,
                "minimum": -103805.9227,
                "name": "X",
                "position": 0,
                "stddev": 62.36625674,
                "variance": 3889.54998
              },
              {
                "average": 2367594.071,
                "count": 384994,
                "maximum": 2367837.03,
                "minimum": 2367462.33,
                "name": "Y",
                "position": 1,
                "stddev": 87.97479935,
                "variance": 7739.565321
              },
              {
                "average": 1.171862603,
                "count": 384994,
                "maximum": 1.542797241,
                "minimum": 0.8827972406,
                "name": "Z",
                "position": 2,
                "stddev": 0.07176673329,
                "variance": 0.005150464006
              },
              {
                "average": 13254.33966,
                "count": 384994,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9791.168161,
                "variance": 95866973.96
              },
              {
                "average": 1,
                "count": 384994,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 384994,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5123456469,
                "count": 384994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998482109,
                "variance": 0.249848234
              },
              {
                "average": 0.0008857280893,
                "count": 384994,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02974803983,
                "variance": 0.0008849458736
              },
              {
                "average": 7.339589708,
                "count": 384994,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.757043047,
                "variance": 7.601286365
              },
              {
                "average": -3.477053923,
                "count": 384994,
                "maximum": 16.26000023,
                "minimum": -12.51000023,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.030530922,
                "variance": 49.42836504
              },
              {
                "average": 0.5013688525,
                "count": 384994,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999987756,
                "variance": 0.2499987756
              },
              {
                "average": 404.35839,
                "count": 384994,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6761488822,
                "variance": 0.4571773109
              },
              {
                "average": 220414124.3,
                "count": 384994,
                "maximum": 220414937.3,
                "minimum": 220413472.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 434.8206904,
                "variance": 189069.0328
              },
              {
                "average": 0.5013688525,
                "count": 384994,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999987756,
                "variance": 0.2499987756
              },
              {
                "average": 0,
                "count": 384994,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 384994,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 384994,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.104037985,
                "count": 384994,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3053102108,
                "variance": 0.0932143248
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103805.9227,
              2367462.33,
              0.8827972406,
              -103530.7227,
              2367837.03,
              1.542797241
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103805.92274363813,
                    2367462.3302074405,
                    0.882797240616543
                  ],
                  [
                    -103805.92274363813,
                    2367837.0302074407,
                    0.882797240616543
                  ],
                  [
                    -103530.72274363812,
                    2367837.0302074407,
                    1.542797240616543
                  ],
                  [
                    -103530.72274363812,
                    2367462.3302074405,
                    1.542797240616543
                  ],
                  [
                    -103805.92274363813,
                    2367462.3302074405,
                    0.882797240616543
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:08:57+00:00",
            "end_time": "2018-09-08T03:44:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2091.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6421077268057,
              71.28347578270527,
              4.6915487907469
            ],
            [
              -156.64262089686653,
              71.28782442040743,
              4.6915487907469
            ],
            [
              -156.62912569524846,
              71.28800519104512,
              55.9515487907469
            ],
            [
              -156.62861514032727,
              71.28365651295839,
              55.9515487907469
            ],
            [
              -156.6421077268057,
              71.28347578270527,
              4.6915487907469
            ]
          ]
        ]
      },
      "bbox": [
        -156.6426209,
        71.28347578,
        4.691548791,
        -156.6286151,
        71.28800519,
        55.95154879
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:22Z",
        "pc:count": 4447021,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96762.30995,
            "count": 4447021,
            "maximum": -96509.19988,
            "minimum": -97005.09988,
            "name": "X",
            "position": 0,
            "stddev": 133.1434978,
            "variance": 17727.19101
          },
          {
            "average": 2367281.218,
            "count": 4447021,
            "maximum": 2367506.892,
            "minimum": 2367033.152,
            "name": "Y",
            "position": 1,
            "stddev": 125.131252,
            "variance": 15657.83022
          },
          {
            "average": 5.355127877,
            "count": 4447021,
            "maximum": 55.95154879,
            "minimum": 4.691548791,
            "name": "Z",
            "position": 2,
            "stddev": 0.2684483496,
            "variance": 0.07206451642
          },
          {
            "average": 37268.59894,
            "count": 4447021,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10361.08859,
            "variance": 107352156.8
          },
          {
            "average": 1.000001124,
            "count": 4447021,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001060352383,
            "variance": 1.124347176e-06
          },
          {
            "average": 1.000002249,
            "count": 4447021,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001499563878,
            "variance": 2.248691824e-06
          },
          {
            "average": 0.4990628558,
            "count": 4447021,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999178,
            "variance": 0.249999178
          },
          {
            "average": 0.0004256782237,
            "count": 4447021,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02062758147,
            "variance": 0.0004254971174
          },
          {
            "average": 1.230888273,
            "count": 4447021,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4214651673,
            "variance": 0.1776328872
          },
          {
            "average": 2.795447928,
            "count": 4447021,
            "maximum": 20.49600029,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62514817,
            "variance": 112.8937736
          },
          {
            "average": 0.5230281125,
            "count": 4447021,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994694807,
            "variance": 0.2494697621
          },
          {
            "average": 426.4365729,
            "count": 4447021,
            "maximum": 458,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.38903421,
            "variance": 302.3785108
          },
          {
            "average": 220492723.9,
            "count": 4447021,
            "maximum": 220723482.9,
            "minimum": 220420062.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128638.2512,
            "variance": 16547799670.0
          },
          {
            "average": 0.5230281125,
            "count": 4447021,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994694807,
            "variance": 0.2494697621
          },
          {
            "average": 0,
            "count": 4447021,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4447021,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4447021,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2139279306,
            "count": 4447021,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4100765891,
            "variance": 0.1681628089
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97005.09988,
          2367033.152,
          4.691548791,
          -96509.19988,
          2367506.892,
          55.95154879
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97005.09987539741,
                2367033.152026993,
                4.6915487907469
              ],
              [
                -97005.09987539741,
                2367506.8920269934,
                4.6915487907469
              ],
              [
                -96509.19987539742,
                2367506.8920269934,
                55.9515487907469
              ],
              [
                -96509.19987539742,
                2367033.152026993,
                55.9515487907469
              ],
              [
                -97005.09987539741,
                2367033.152026993,
                4.6915487907469
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:22+00:00",
        "end_time": "2018-09-08T05:34:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2091.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2091.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2091.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2091.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6426209,
            71.28347578,
            4.691548791,
            -156.6286151,
            71.28800519,
            55.95154879
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6421077268057,
                  71.28347578270527,
                  4.6915487907469
                ],
                [
                  -156.64262089686653,
                  71.28782442040743,
                  4.6915487907469
                ],
                [
                  -156.62912569524846,
                  71.28800519104512,
                  55.9515487907469
                ],
                [
                  -156.62861514032727,
                  71.28365651295839,
                  55.9515487907469
                ],
                [
                  -156.6421077268057,
                  71.28347578270527,
                  4.6915487907469
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2091.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2091.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:22Z",
            "pc:count": 4447021,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96762.30995,
                "count": 4447021,
                "maximum": -96509.19988,
                "minimum": -97005.09988,
                "name": "X",
                "position": 0,
                "stddev": 133.1434978,
                "variance": 17727.19101
              },
              {
                "average": 2367281.218,
                "count": 4447021,
                "maximum": 2367506.892,
                "minimum": 2367033.152,
                "name": "Y",
                "position": 1,
                "stddev": 125.131252,
                "variance": 15657.83022
              },
              {
                "average": 5.355127877,
                "count": 4447021,
                "maximum": 55.95154879,
                "minimum": 4.691548791,
                "name": "Z",
                "position": 2,
                "stddev": 0.2684483496,
                "variance": 0.07206451642
              },
              {
                "average": 37268.59894,
                "count": 4447021,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10361.08859,
                "variance": 107352156.8
              },
              {
                "average": 1.000001124,
                "count": 4447021,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001060352383,
                "variance": 1.124347176e-06
              },
              {
                "average": 1.000002249,
                "count": 4447021,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001499563878,
                "variance": 2.248691824e-06
              },
              {
                "average": 0.4990628558,
                "count": 4447021,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999178,
                "variance": 0.249999178
              },
              {
                "average": 0.0004256782237,
                "count": 4447021,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02062758147,
                "variance": 0.0004254971174
              },
              {
                "average": 1.230888273,
                "count": 4447021,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4214651673,
                "variance": 0.1776328872
              },
              {
                "average": 2.795447928,
                "count": 4447021,
                "maximum": 20.49600029,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62514817,
                "variance": 112.8937736
              },
              {
                "average": 0.5230281125,
                "count": 4447021,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994694807,
                "variance": 0.2494697621
              },
              {
                "average": 426.4365729,
                "count": 4447021,
                "maximum": 458,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.38903421,
                "variance": 302.3785108
              },
              {
                "average": 220492723.9,
                "count": 4447021,
                "maximum": 220723482.9,
                "minimum": 220420062.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128638.2512,
                "variance": 16547799670.0
              },
              {
                "average": 0.5230281125,
                "count": 4447021,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994694807,
                "variance": 0.2494697621
              },
              {
                "average": 0,
                "count": 4447021,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4447021,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4447021,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2139279306,
                "count": 4447021,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4100765891,
                "variance": 0.1681628089
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97005.09988,
              2367033.152,
              4.691548791,
              -96509.19988,
              2367506.892,
              55.95154879
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97005.09987539741,
                    2367033.152026993,
                    4.6915487907469
                  ],
                  [
                    -97005.09987539741,
                    2367506.8920269934,
                    4.6915487907469
                  ],
                  [
                    -96509.19987539742,
                    2367506.8920269934,
                    55.9515487907469
                  ],
                  [
                    -96509.19987539742,
                    2367033.152026993,
                    55.9515487907469
                  ],
                  [
                    -97005.09987539741,
                    2367033.152026993,
                    4.6915487907469
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:22+00:00",
            "end_time": "2018-09-08T05:34:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1729.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77177179039413,
              71.25157619332113,
              9.526121656241571
            ],
            [
              -156.77230832072146,
              71.25591510975043,
              9.526121656241571
            ],
            [
              -156.7588415368086,
              71.2561046150248,
              20.56612165624157
            ],
            [
              -156.75830760672204,
              71.25176565643187,
              20.56612165624157
            ],
            [
              -156.77177179039413,
              71.25157619332113,
              9.526121656241571
            ]
          ]
        ]
      },
      "bbox": [
        -156.7723083,
        71.25157619,
        9.526121656,
        -156.7583076,
        71.25610462,
        20.56612166
      ],
      "properties": {
        "datetime": "2018-09-11T18:26:26Z",
        "pc:count": 3422259,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101654.9493,
            "count": 3422259,
            "maximum": -101412.323,
            "minimum": -101907.923,
            "name": "X",
            "position": 0,
            "stddev": 133.7030202,
            "variance": 17876.4976
          },
          {
            "average": 2364001.029,
            "count": 3422259,
            "maximum": 2364230.228,
            "minimum": 2363757.408,
            "name": "Y",
            "position": 1,
            "stddev": 128.6567007,
            "variance": 16552.54663
          },
          {
            "average": 11.08110225,
            "count": 3422259,
            "maximum": 20.56612166,
            "minimum": 9.526121656,
            "name": "Z",
            "position": 2,
            "stddev": 0.8742248601,
            "variance": 0.7642691059
          },
          {
            "average": 42679.04304,
            "count": 3422259,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11549.65821,
            "variance": 133394604.7
          },
          {
            "average": 1.000002338,
            "count": 3422259,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001528931795,
            "variance": 2.337632434e-06
          },
          {
            "average": 1.000004675,
            "count": 3422259,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002162233553,
            "variance": 4.675253939e-06
          },
          {
            "average": 0.4939973859,
            "count": 3422259,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999640404,
            "variance": 0.2499640417
          },
          {
            "average": 0.0004590535082,
            "count": 3422259,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02142061886,
            "variance": 0.0004588429122
          },
          {
            "average": 1.273167519,
            "count": 3422259,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5028063032,
            "variance": 0.2528141785
          },
          {
            "average": 2.460913002,
            "count": 3422259,
            "maximum": 20.83799934,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.58139826,
            "variance": 111.9659891
          },
          {
            "average": 0.4699556638,
            "count": 3422259,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990965945,
            "variance": 0.2490974106
          },
          {
            "average": 422.3354705,
            "count": 3422259,
            "maximum": 464,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.06481604,
            "variance": 291.2079464
          },
          {
            "average": 220464009.8,
            "count": 3422259,
            "maximum": 220725586,
            "minimum": 220419367.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 107007.8248,
            "variance": 11450674560.0
          },
          {
            "average": 0.4699556638,
            "count": 3422259,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990965945,
            "variance": 0.2490974106
          },
          {
            "average": 0,
            "count": 3422259,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3422259,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3422259,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2126238838,
            "count": 3422259,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4091638019,
            "variance": 0.1674150168
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101907.923,
          2363757.408,
          9.526121656,
          -101412.323,
          2364230.228,
          20.56612166
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101907.92295946494,
                2363757.408480593,
                9.526121656241571
              ],
              [
                -101907.92295946494,
                2364230.2284805933,
                9.526121656241571
              ],
              [
                -101412.32295946493,
                2364230.2284805933,
                20.56612165624157
              ],
              [
                -101412.32295946493,
                2363757.408480593,
                20.56612165624157
              ],
              [
                -101907.92295946494,
                2363757.408480593,
                9.526121656241571
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:26:26+00:00",
        "end_time": "2018-09-08T05:22:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1729.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1729.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1729.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1729.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7723083,
            71.25157619,
            9.526121656,
            -156.7583076,
            71.25610462,
            20.56612166
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77177179039413,
                  71.25157619332113,
                  9.526121656241571
                ],
                [
                  -156.77230832072146,
                  71.25591510975043,
                  9.526121656241571
                ],
                [
                  -156.7588415368086,
                  71.2561046150248,
                  20.56612165624157
                ],
                [
                  -156.75830760672204,
                  71.25176565643187,
                  20.56612165624157
                ],
                [
                  -156.77177179039413,
                  71.25157619332113,
                  9.526121656241571
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1729.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1729.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:26:26Z",
            "pc:count": 3422259,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101654.9493,
                "count": 3422259,
                "maximum": -101412.323,
                "minimum": -101907.923,
                "name": "X",
                "position": 0,
                "stddev": 133.7030202,
                "variance": 17876.4976
              },
              {
                "average": 2364001.029,
                "count": 3422259,
                "maximum": 2364230.228,
                "minimum": 2363757.408,
                "name": "Y",
                "position": 1,
                "stddev": 128.6567007,
                "variance": 16552.54663
              },
              {
                "average": 11.08110225,
                "count": 3422259,
                "maximum": 20.56612166,
                "minimum": 9.526121656,
                "name": "Z",
                "position": 2,
                "stddev": 0.8742248601,
                "variance": 0.7642691059
              },
              {
                "average": 42679.04304,
                "count": 3422259,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11549.65821,
                "variance": 133394604.7
              },
              {
                "average": 1.000002338,
                "count": 3422259,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001528931795,
                "variance": 2.337632434e-06
              },
              {
                "average": 1.000004675,
                "count": 3422259,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002162233553,
                "variance": 4.675253939e-06
              },
              {
                "average": 0.4939973859,
                "count": 3422259,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999640404,
                "variance": 0.2499640417
              },
              {
                "average": 0.0004590535082,
                "count": 3422259,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02142061886,
                "variance": 0.0004588429122
              },
              {
                "average": 1.273167519,
                "count": 3422259,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5028063032,
                "variance": 0.2528141785
              },
              {
                "average": 2.460913002,
                "count": 3422259,
                "maximum": 20.83799934,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.58139826,
                "variance": 111.9659891
              },
              {
                "average": 0.4699556638,
                "count": 3422259,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990965945,
                "variance": 0.2490974106
              },
              {
                "average": 422.3354705,
                "count": 3422259,
                "maximum": 464,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.06481604,
                "variance": 291.2079464
              },
              {
                "average": 220464009.8,
                "count": 3422259,
                "maximum": 220725586,
                "minimum": 220419367.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 107007.8248,
                "variance": 11450674560.0
              },
              {
                "average": 0.4699556638,
                "count": 3422259,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990965945,
                "variance": 0.2490974106
              },
              {
                "average": 0,
                "count": 3422259,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3422259,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3422259,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2126238838,
                "count": 3422259,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4091638019,
                "variance": 0.1674150168
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101907.923,
              2363757.408,
              9.526121656,
              -101412.323,
              2364230.228,
              20.56612166
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101907.92295946494,
                    2363757.408480593,
                    9.526121656241571
                  ],
                  [
                    -101907.92295946494,
                    2364230.2284805933,
                    9.526121656241571
                  ],
                  [
                    -101412.32295946493,
                    2364230.2284805933,
                    20.56612165624157
                  ],
                  [
                    -101412.32295946493,
                    2363757.408480593,
                    20.56612165624157
                  ],
                  [
                    -101907.92295946494,
                    2363757.408480593,
                    9.526121656241571
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:26:26+00:00",
            "end_time": "2018-09-08T05:22:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1838.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72028047450343,
              71.25943077202331,
              9.910046013950428
            ],
            [
              -156.72080818607103,
              71.26377794896878,
              9.910046013950428
            ],
            [
              -156.70733190000809,
              71.26396399681546,
              12.590046013950428
            ],
            [
              -156.70680679641265,
              71.25961677837802,
              12.590046013950428
            ],
            [
              -156.72028047450343,
              71.25943077202331,
              9.910046013950428
            ]
          ]
        ]
      },
      "bbox": [
        -156.7208082,
        71.25943077,
        9.910046014,
        -156.7068068,
        71.263964,
        12.59004601
      ],
      "properties": {
        "datetime": "2018-09-11T18:23:55Z",
        "pc:count": 3943393,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99734.79351,
            "count": 3943393,
            "maximum": -99485.06516,
            "minimum": -99980.82516,
            "name": "X",
            "position": 0,
            "stddev": 133.8014281,
            "variance": 17902.82217
          },
          {
            "average": 2364765.241,
            "count": 3943393,
            "maximum": 2365007.264,
            "minimum": 2364533.584,
            "name": "Y",
            "position": 1,
            "stddev": 129.5944962,
            "variance": 16794.73344
          },
          {
            "average": 10.97420717,
            "count": 3943393,
            "maximum": 12.59004601,
            "minimum": 9.910046014,
            "name": "Z",
            "position": 2,
            "stddev": 0.5094198526,
            "variance": 0.2595085862
          },
          {
            "average": 43137.08584,
            "count": 3943393,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10484.61051,
            "variance": 109927057.6
          },
          {
            "average": 1,
            "count": 3943393,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3943393,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5007482135,
            "count": 3943393,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995036,
            "variance": 0.2499995036
          },
          {
            "average": 0.0004503735742,
            "count": 3943393,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02121723007,
            "variance": 0.000450170852
          },
          {
            "average": 1.248660735,
            "count": 3943393,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4324655134,
            "variance": 0.1870264203
          },
          {
            "average": -0.2151772918,
            "count": 3943393,
            "maximum": 16.42200089,
            "minimum": -19.59600067,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41173499,
            "variance": 108.4042255
          },
          {
            "average": 0.4927462213,
            "count": 3943393,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999474433,
            "variance": 0.2499474461
          },
          {
            "average": 425.6598374,
            "count": 3943393,
            "maximum": 463,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.73482262,
            "variance": 314.5239333
          },
          {
            "average": 220478939.8,
            "count": 3943393,
            "maximum": 220725435.8,
            "minimum": 220420132.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 119227.92,
            "variance": 14215296900.0
          },
          {
            "average": 0.4927462213,
            "count": 3943393,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999474433,
            "variance": 0.2499474461
          },
          {
            "average": 0,
            "count": 3943393,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3943393,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3943393,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2205542283,
            "count": 3943393,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.414620434,
            "variance": 0.1719101043
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99980.82516,
          2364533.584,
          9.910046014,
          -99485.06516,
          2365007.264,
          12.59004601
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99980.82515766459,
                2364533.583939039,
                9.910046013950428
              ],
              [
                -99980.82515766459,
                2365007.263939039,
                9.910046013950428
              ],
              [
                -99485.06515766458,
                2365007.263939039,
                12.590046013950428
              ],
              [
                -99485.06515766458,
                2364533.583939039,
                12.590046013950428
              ],
              [
                -99980.82515766459,
                2364533.583939039,
                9.910046013950428
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:23:55+00:00",
        "end_time": "2018-09-08T05:35:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1838.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1838.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1838.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1838.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7208082,
            71.25943077,
            9.910046014,
            -156.7068068,
            71.263964,
            12.59004601
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72028047450343,
                  71.25943077202331,
                  9.910046013950428
                ],
                [
                  -156.72080818607103,
                  71.26377794896878,
                  9.910046013950428
                ],
                [
                  -156.70733190000809,
                  71.26396399681546,
                  12.590046013950428
                ],
                [
                  -156.70680679641265,
                  71.25961677837802,
                  12.590046013950428
                ],
                [
                  -156.72028047450343,
                  71.25943077202331,
                  9.910046013950428
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1838.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1838.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:23:55Z",
            "pc:count": 3943393,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99734.79351,
                "count": 3943393,
                "maximum": -99485.06516,
                "minimum": -99980.82516,
                "name": "X",
                "position": 0,
                "stddev": 133.8014281,
                "variance": 17902.82217
              },
              {
                "average": 2364765.241,
                "count": 3943393,
                "maximum": 2365007.264,
                "minimum": 2364533.584,
                "name": "Y",
                "position": 1,
                "stddev": 129.5944962,
                "variance": 16794.73344
              },
              {
                "average": 10.97420717,
                "count": 3943393,
                "maximum": 12.59004601,
                "minimum": 9.910046014,
                "name": "Z",
                "position": 2,
                "stddev": 0.5094198526,
                "variance": 0.2595085862
              },
              {
                "average": 43137.08584,
                "count": 3943393,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10484.61051,
                "variance": 109927057.6
              },
              {
                "average": 1,
                "count": 3943393,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3943393,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5007482135,
                "count": 3943393,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995036,
                "variance": 0.2499995036
              },
              {
                "average": 0.0004503735742,
                "count": 3943393,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02121723007,
                "variance": 0.000450170852
              },
              {
                "average": 1.248660735,
                "count": 3943393,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4324655134,
                "variance": 0.1870264203
              },
              {
                "average": -0.2151772918,
                "count": 3943393,
                "maximum": 16.42200089,
                "minimum": -19.59600067,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41173499,
                "variance": 108.4042255
              },
              {
                "average": 0.4927462213,
                "count": 3943393,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999474433,
                "variance": 0.2499474461
              },
              {
                "average": 425.6598374,
                "count": 3943393,
                "maximum": 463,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.73482262,
                "variance": 314.5239333
              },
              {
                "average": 220478939.8,
                "count": 3943393,
                "maximum": 220725435.8,
                "minimum": 220420132.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 119227.92,
                "variance": 14215296900.0
              },
              {
                "average": 0.4927462213,
                "count": 3943393,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999474433,
                "variance": 0.2499474461
              },
              {
                "average": 0,
                "count": 3943393,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3943393,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3943393,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2205542283,
                "count": 3943393,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.414620434,
                "variance": 0.1719101043
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99980.82516,
              2364533.584,
              9.910046014,
              -99485.06516,
              2365007.264,
              12.59004601
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99980.82515766459,
                    2364533.583939039,
                    9.910046013950428
                  ],
                  [
                    -99980.82515766459,
                    2365007.263939039,
                    9.910046013950428
                  ],
                  [
                    -99485.06515766458,
                    2365007.263939039,
                    12.590046013950428
                  ],
                  [
                    -99485.06515766458,
                    2364533.583939039,
                    12.590046013950428
                  ],
                  [
                    -99980.82515766459,
                    2364533.583939039,
                    9.910046013950428
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:23:55+00:00",
            "end_time": "2018-09-08T05:35:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1612.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.89939183689776,
              71.244174482371,
              0.914138701099259
            ],
            [
              -156.89995389069531,
              71.24852071847921,
              0.914138701099259
            ],
            [
              -156.88672569346102,
              71.24871553125588,
              8.95413870109926
            ],
            [
              -156.88616619700792,
              71.24436925174847,
              8.95413870109926
            ],
            [
              -156.89939183689776,
              71.244174482371,
              0.914138701099259
            ]
          ]
        ]
      },
      "bbox": [
        -156.8999539,
        71.24417448,
        0.9141387011,
        -156.8861662,
        71.24871553,
        8.954138701
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:20Z",
        "pc:count": 2422939,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106360.6441,
            "count": 2422939,
            "maximum": -106145.2834,
            "minimum": -106632.3034,
            "name": "X",
            "position": 0,
            "stddev": 132.3456895,
            "variance": 17515.38153
          },
          {
            "average": 2363373.687,
            "count": 2422939,
            "maximum": 2363626.288,
            "minimum": 2363152.608,
            "name": "Y",
            "position": 1,
            "stddev": 126.5883524,
            "variance": 16024.61097
          },
          {
            "average": 2.10497436,
            "count": 2422939,
            "maximum": 8.954138701,
            "minimum": 0.9141387011,
            "name": "Z",
            "position": 2,
            "stddev": 1.493903643,
            "variance": 2.231748094
          },
          {
            "average": 21264.55476,
            "count": 2422939,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14061.47947,
            "variance": 197725204.8
          },
          {
            "average": 1.000000825,
            "count": 2422939,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009085391954,
            "variance": 8.254434695e-07
          },
          {
            "average": 1.000001651,
            "count": 2422939,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001284867922,
            "variance": 1.650885576e-06
          },
          {
            "average": 0.5065860098,
            "count": 2422939,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999567258,
            "variance": 0.2499567276
          },
          {
            "average": 0.0004614230899,
            "count": 2422939,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02147580892,
            "variance": 0.000461210369
          },
          {
            "average": 5.183643913,
            "count": 2422939,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.776402302,
            "variance": 14.26121435
          },
          {
            "average": -1.823987076,
            "count": 2422939,
            "maximum": 20.54999924,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.049326442,
            "variance": 64.79165616
          },
          {
            "average": 0.4867373879,
            "count": 2422939,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998241753,
            "variance": 0.2498242062
          },
          {
            "average": 421.2870506,
            "count": 2422939,
            "maximum": 466,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.49340574,
            "variance": 551.9401135
          },
          {
            "average": 220485853.6,
            "count": 2422939,
            "maximum": 220726480.4,
            "minimum": 220415791.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129123.0098,
            "variance": 16672751650.0
          },
          {
            "average": 0.4867373879,
            "count": 2422939,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998241753,
            "variance": 0.2498242062
          },
          {
            "average": 0,
            "count": 2422939,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2422939,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2422939,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07087590732,
            "count": 2422939,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.256617498,
            "variance": 0.06585254026
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106632.3034,
          2363152.608,
          0.9141387011,
          -106145.2834,
          2363626.288,
          8.954138701
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106632.30337419301,
                2363152.6075831545,
                0.914138701099259
              ],
              [
                -106632.30337419301,
                2363626.287583154,
                0.914138701099259
              ],
              [
                -106145.28337419302,
                2363626.287583154,
                8.95413870109926
              ],
              [
                -106145.28337419302,
                2363152.6075831545,
                8.95413870109926
              ],
              [
                -106632.30337419301,
                2363152.6075831545,
                0.914138701099259
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:20+00:00",
        "end_time": "2018-09-08T04:23:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1612.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1612.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1612.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1612.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8999539,
            71.24417448,
            0.9141387011,
            -156.8861662,
            71.24871553,
            8.954138701
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.89939183689776,
                  71.244174482371,
                  0.914138701099259
                ],
                [
                  -156.89995389069531,
                  71.24852071847921,
                  0.914138701099259
                ],
                [
                  -156.88672569346102,
                  71.24871553125588,
                  8.95413870109926
                ],
                [
                  -156.88616619700792,
                  71.24436925174847,
                  8.95413870109926
                ],
                [
                  -156.89939183689776,
                  71.244174482371,
                  0.914138701099259
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1612.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1612.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:20Z",
            "pc:count": 2422939,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106360.6441,
                "count": 2422939,
                "maximum": -106145.2834,
                "minimum": -106632.3034,
                "name": "X",
                "position": 0,
                "stddev": 132.3456895,
                "variance": 17515.38153
              },
              {
                "average": 2363373.687,
                "count": 2422939,
                "maximum": 2363626.288,
                "minimum": 2363152.608,
                "name": "Y",
                "position": 1,
                "stddev": 126.5883524,
                "variance": 16024.61097
              },
              {
                "average": 2.10497436,
                "count": 2422939,
                "maximum": 8.954138701,
                "minimum": 0.9141387011,
                "name": "Z",
                "position": 2,
                "stddev": 1.493903643,
                "variance": 2.231748094
              },
              {
                "average": 21264.55476,
                "count": 2422939,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14061.47947,
                "variance": 197725204.8
              },
              {
                "average": 1.000000825,
                "count": 2422939,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009085391954,
                "variance": 8.254434695e-07
              },
              {
                "average": 1.000001651,
                "count": 2422939,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001284867922,
                "variance": 1.650885576e-06
              },
              {
                "average": 0.5065860098,
                "count": 2422939,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999567258,
                "variance": 0.2499567276
              },
              {
                "average": 0.0004614230899,
                "count": 2422939,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02147580892,
                "variance": 0.000461210369
              },
              {
                "average": 5.183643913,
                "count": 2422939,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.776402302,
                "variance": 14.26121435
              },
              {
                "average": -1.823987076,
                "count": 2422939,
                "maximum": 20.54999924,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.049326442,
                "variance": 64.79165616
              },
              {
                "average": 0.4867373879,
                "count": 2422939,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998241753,
                "variance": 0.2498242062
              },
              {
                "average": 421.2870506,
                "count": 2422939,
                "maximum": 466,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.49340574,
                "variance": 551.9401135
              },
              {
                "average": 220485853.6,
                "count": 2422939,
                "maximum": 220726480.4,
                "minimum": 220415791.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129123.0098,
                "variance": 16672751650.0
              },
              {
                "average": 0.4867373879,
                "count": 2422939,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998241753,
                "variance": 0.2498242062
              },
              {
                "average": 0,
                "count": 2422939,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2422939,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2422939,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07087590732,
                "count": 2422939,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.256617498,
                "variance": 0.06585254026
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106632.3034,
              2363152.608,
              0.9141387011,
              -106145.2834,
              2363626.288,
              8.954138701
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106632.30337419301,
                    2363152.6075831545,
                    0.914138701099259
                  ],
                  [
                    -106632.30337419301,
                    2363626.287583154,
                    0.914138701099259
                  ],
                  [
                    -106145.28337419302,
                    2363626.287583154,
                    8.95413870109926
                  ],
                  [
                    -106145.28337419302,
                    2363152.6075831545,
                    8.95413870109926
                  ],
                  [
                    -106632.30337419301,
                    2363152.6075831545,
                    0.914138701099259
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:20+00:00",
            "end_time": "2018-09-08T04:23:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2048.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76995714396605,
              71.28025563364041,
              10.182992405999357
            ],
            [
              -156.77049503178708,
              71.2846036520311,
              10.182992405999357
            ],
            [
              -156.75700717755154,
              71.28479312243927,
              476.38299240599935
            ],
            [
              -156.75647190234577,
              71.28044506173434,
              476.38299240599935
            ],
            [
              -156.76995714396605,
              71.28025563364041,
              10.182992405999357
            ]
          ]
        ]
      },
      "bbox": [
        -156.770495,
        71.28025563,
        10.18299241,
        -156.7564719,
        71.28479312,
        476.3829924
      ],
      "properties": {
        "datetime": "2018-09-08T04:59:22Z",
        "pc:count": 3205735,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101467.5831,
            "count": 3205735,
            "maximum": -101215.3136,
            "minimum": -101711.0536,
            "name": "X",
            "position": 0,
            "stddev": 133.9594841,
            "variance": 17945.14338
          },
          {
            "average": 2367112.581,
            "count": 3205735,
            "maximum": 2367347.905,
            "minimum": 2366874.185,
            "name": "Y",
            "position": 1,
            "stddev": 127.071959,
            "variance": 16147.28276
          },
          {
            "average": 11.36086435,
            "count": 3205735,
            "maximum": 476.3829924,
            "minimum": 10.18299241,
            "name": "Z",
            "position": 2,
            "stddev": 0.646776291,
            "variance": 0.4183195706
          },
          {
            "average": 41174.88216,
            "count": 3205735,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10518.89989,
            "variance": 110647254.8
          },
          {
            "average": 1.000000624,
            "count": 3205735,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007898618183,
            "variance": 6.238816921e-07
          },
          {
            "average": 1.000001248,
            "count": 3205735,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001117032947,
            "variance": 1.247762606e-06
          },
          {
            "average": 0.5013711364,
            "count": 3205735,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998198,
            "variance": 0.249998198
          },
          {
            "average": 0.000385247065,
            "count": 3205735,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0196239336,
            "variance": 0.0003850987699
          },
          {
            "average": 1.312987817,
            "count": 3205735,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4644455419,
            "variance": 0.2157096614
          },
          {
            "average": -0.4934309218,
            "count": 3205735,
            "maximum": 16.33799934,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.15167591,
            "variance": 103.0565238
          },
          {
            "average": 0.4846682586,
            "count": 3205735,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997649604,
            "variance": 0.2497650156
          },
          {
            "average": 409.0420471,
            "count": 3205735,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9092932401,
            "variance": 0.8268141965
          },
          {
            "average": 220416749.9,
            "count": 3205735,
            "maximum": 220417962.2,
            "minimum": 220415689.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 530.1202127,
            "variance": 281027.4399
          },
          {
            "average": 0.4846682586,
            "count": 3205735,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997649604,
            "variance": 0.2497650156
          },
          {
            "average": 0,
            "count": 3205735,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3205735,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3205735,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2098498472,
            "count": 3205735,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4072013514,
            "variance": 0.1658129406
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101711.0536,
          2366874.185,
          10.18299241,
          -101215.3136,
          2367347.905,
          476.3829924
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101711.05361900279,
                2366874.185447185,
                10.182992405999357
              ],
              [
                -101711.05361900279,
                2367347.9054471846,
                10.182992405999357
              ],
              [
                -101215.3136190028,
                2367347.9054471846,
                476.38299240599935
              ],
              [
                -101215.3136190028,
                2366874.185447185,
                476.38299240599935
              ],
              [
                -101711.05361900279,
                2366874.185447185,
                10.182992405999357
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:59:22+00:00",
        "end_time": "2018-09-08T04:21:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2048.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2048.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2048.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2048.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.770495,
            71.28025563,
            10.18299241,
            -156.7564719,
            71.28479312,
            476.3829924
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76995714396605,
                  71.28025563364041,
                  10.182992405999357
                ],
                [
                  -156.77049503178708,
                  71.2846036520311,
                  10.182992405999357
                ],
                [
                  -156.75700717755154,
                  71.28479312243927,
                  476.38299240599935
                ],
                [
                  -156.75647190234577,
                  71.28044506173434,
                  476.38299240599935
                ],
                [
                  -156.76995714396605,
                  71.28025563364041,
                  10.182992405999357
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2048.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2048.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:59:22Z",
            "pc:count": 3205735,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101467.5831,
                "count": 3205735,
                "maximum": -101215.3136,
                "minimum": -101711.0536,
                "name": "X",
                "position": 0,
                "stddev": 133.9594841,
                "variance": 17945.14338
              },
              {
                "average": 2367112.581,
                "count": 3205735,
                "maximum": 2367347.905,
                "minimum": 2366874.185,
                "name": "Y",
                "position": 1,
                "stddev": 127.071959,
                "variance": 16147.28276
              },
              {
                "average": 11.36086435,
                "count": 3205735,
                "maximum": 476.3829924,
                "minimum": 10.18299241,
                "name": "Z",
                "position": 2,
                "stddev": 0.646776291,
                "variance": 0.4183195706
              },
              {
                "average": 41174.88216,
                "count": 3205735,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10518.89989,
                "variance": 110647254.8
              },
              {
                "average": 1.000000624,
                "count": 3205735,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007898618183,
                "variance": 6.238816921e-07
              },
              {
                "average": 1.000001248,
                "count": 3205735,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001117032947,
                "variance": 1.247762606e-06
              },
              {
                "average": 0.5013711364,
                "count": 3205735,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998198,
                "variance": 0.249998198
              },
              {
                "average": 0.000385247065,
                "count": 3205735,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0196239336,
                "variance": 0.0003850987699
              },
              {
                "average": 1.312987817,
                "count": 3205735,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4644455419,
                "variance": 0.2157096614
              },
              {
                "average": -0.4934309218,
                "count": 3205735,
                "maximum": 16.33799934,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.15167591,
                "variance": 103.0565238
              },
              {
                "average": 0.4846682586,
                "count": 3205735,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997649604,
                "variance": 0.2497650156
              },
              {
                "average": 409.0420471,
                "count": 3205735,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9092932401,
                "variance": 0.8268141965
              },
              {
                "average": 220416749.9,
                "count": 3205735,
                "maximum": 220417962.2,
                "minimum": 220415689.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 530.1202127,
                "variance": 281027.4399
              },
              {
                "average": 0.4846682586,
                "count": 3205735,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997649604,
                "variance": 0.2497650156
              },
              {
                "average": 0,
                "count": 3205735,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3205735,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3205735,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2098498472,
                "count": 3205735,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4072013514,
                "variance": 0.1658129406
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101711.0536,
              2366874.185,
              10.18299241,
              -101215.3136,
              2367347.905,
              476.3829924
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101711.05361900279,
                    2366874.185447185,
                    10.182992405999357
                  ],
                  [
                    -101711.05361900279,
                    2367347.9054471846,
                    10.182992405999357
                  ],
                  [
                    -101215.3136190028,
                    2367347.9054471846,
                    476.38299240599935
                  ],
                  [
                    -101215.3136190028,
                    2366874.185447185,
                    476.38299240599935
                  ],
                  [
                    -101711.05361900279,
                    2366874.185447185,
                    10.182992405999357
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:59:22+00:00",
            "end_time": "2018-09-08T04:21:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1616.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84868697605918,
              71.24386592625484,
              1.999288537704792
            ],
            [
              -156.84923922241455,
              71.24821248063486,
              1.999288537704792
            ],
            [
              -156.83577989216866,
              71.24840721303241,
              11.27928853770479
            ],
            [
              -156.83523024817444,
              71.2440606152687,
              11.27928853770479
            ],
            [
              -156.84868697605918,
              71.24386592625484,
              1.999288537704792
            ]
          ]
        ]
      },
      "bbox": [
        -156.8492392,
        71.24386593,
        1.999288538,
        -156.8352302,
        71.24840721,
        11.27928854
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:47Z",
        "pc:count": 3550113,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104500.5181,
            "count": 3550113,
            "maximum": -104274.5815,
            "minimum": -104770.1015,
            "name": "X",
            "position": 0,
            "stddev": 126.5302777,
            "variance": 16009.91117
          },
          {
            "average": 2363280.415,
            "count": 3550113,
            "maximum": 2363512.039,
            "minimum": 2363038.339,
            "name": "Y",
            "position": 1,
            "stddev": 127.729129,
            "variance": 16314.7304
          },
          {
            "average": 7.433334544,
            "count": 3550113,
            "maximum": 11.27928854,
            "minimum": 1.999288538,
            "name": "Z",
            "position": 2,
            "stddev": 2.307442091,
            "variance": 5.324289002
          },
          {
            "average": 47349.5281,
            "count": 3550113,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8592.094448,
            "variance": 73824087
          },
          {
            "average": 1,
            "count": 3550113,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3550113,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5010446146,
            "count": 3550113,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989792,
            "variance": 0.2499989792
          },
          {
            "average": 0.0003997055868,
            "count": 3550113,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01998864515,
            "variance": 0.0003995459348
          },
          {
            "average": 1.609290465,
            "count": 3550113,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.694744867,
            "variance": 2.872160163
          },
          {
            "average": 0.9215945775,
            "count": 3550113,
            "maximum": 20.61599922,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.04495962,
            "variance": 100.9012138
          },
          {
            "average": 0.5181136488,
            "count": 3550113,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996718584,
            "variance": 0.2496719661
          },
          {
            "average": 420.3574438,
            "count": 3550113,
            "maximum": 466,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.3345024,
            "variance": 373.822983
          },
          {
            "average": 220466887.4,
            "count": 3550113,
            "maximum": 220726507.5,
            "minimum": 220417133.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 112077.024,
            "variance": 12561259310.0
          },
          {
            "average": 0.5181136488,
            "count": 3550113,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996718584,
            "variance": 0.2496719661
          },
          {
            "average": 0,
            "count": 3550113,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3550113,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3550113,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2110696195,
            "count": 3550113,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4080677421,
            "variance": 0.1665192821
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104770.1015,
          2363038.339,
          1.999288538,
          -104274.5815,
          2363512.039,
          11.27928854
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104770.10148651036,
                2363038.339282637,
                1.999288537704792
              ],
              [
                -104770.10148651036,
                2363512.039282637,
                1.999288537704792
              ],
              [
                -104274.58148651037,
                2363512.039282637,
                11.27928853770479
              ],
              [
                -104274.58148651037,
                2363038.339282637,
                11.27928853770479
              ],
              [
                -104770.10148651036,
                2363038.339282637,
                1.999288537704792
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:47+00:00",
        "end_time": "2018-09-08T04:45:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1616.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1616.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1616.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1616.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8492392,
            71.24386593,
            1.999288538,
            -156.8352302,
            71.24840721,
            11.27928854
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84868697605918,
                  71.24386592625484,
                  1.999288537704792
                ],
                [
                  -156.84923922241455,
                  71.24821248063486,
                  1.999288537704792
                ],
                [
                  -156.83577989216866,
                  71.24840721303241,
                  11.27928853770479
                ],
                [
                  -156.83523024817444,
                  71.2440606152687,
                  11.27928853770479
                ],
                [
                  -156.84868697605918,
                  71.24386592625484,
                  1.999288537704792
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1616.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1616.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:47Z",
            "pc:count": 3550113,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104500.5181,
                "count": 3550113,
                "maximum": -104274.5815,
                "minimum": -104770.1015,
                "name": "X",
                "position": 0,
                "stddev": 126.5302777,
                "variance": 16009.91117
              },
              {
                "average": 2363280.415,
                "count": 3550113,
                "maximum": 2363512.039,
                "minimum": 2363038.339,
                "name": "Y",
                "position": 1,
                "stddev": 127.729129,
                "variance": 16314.7304
              },
              {
                "average": 7.433334544,
                "count": 3550113,
                "maximum": 11.27928854,
                "minimum": 1.999288538,
                "name": "Z",
                "position": 2,
                "stddev": 2.307442091,
                "variance": 5.324289002
              },
              {
                "average": 47349.5281,
                "count": 3550113,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8592.094448,
                "variance": 73824087
              },
              {
                "average": 1,
                "count": 3550113,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3550113,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5010446146,
                "count": 3550113,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989792,
                "variance": 0.2499989792
              },
              {
                "average": 0.0003997055868,
                "count": 3550113,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01998864515,
                "variance": 0.0003995459348
              },
              {
                "average": 1.609290465,
                "count": 3550113,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.694744867,
                "variance": 2.872160163
              },
              {
                "average": 0.9215945775,
                "count": 3550113,
                "maximum": 20.61599922,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.04495962,
                "variance": 100.9012138
              },
              {
                "average": 0.5181136488,
                "count": 3550113,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996718584,
                "variance": 0.2496719661
              },
              {
                "average": 420.3574438,
                "count": 3550113,
                "maximum": 466,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.3345024,
                "variance": 373.822983
              },
              {
                "average": 220466887.4,
                "count": 3550113,
                "maximum": 220726507.5,
                "minimum": 220417133.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 112077.024,
                "variance": 12561259310.0
              },
              {
                "average": 0.5181136488,
                "count": 3550113,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996718584,
                "variance": 0.2496719661
              },
              {
                "average": 0,
                "count": 3550113,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3550113,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3550113,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2110696195,
                "count": 3550113,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4080677421,
                "variance": 0.1665192821
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104770.1015,
              2363038.339,
              1.999288538,
              -104274.5815,
              2363512.039,
              11.27928854
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104770.10148651036,
                    2363038.339282637,
                    1.999288537704792
                  ],
                  [
                    -104770.10148651036,
                    2363512.039282637,
                    1.999288537704792
                  ],
                  [
                    -104274.58148651037,
                    2363512.039282637,
                    11.27928853770479
                  ],
                  [
                    -104274.58148651037,
                    2363038.339282637,
                    11.27928853770479
                  ],
                  [
                    -104770.10148651036,
                    2363038.339282637,
                    1.999288537704792
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:47+00:00",
            "end_time": "2018-09-08T04:45:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1984.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.693968514384,
              71.27154597211238,
              6.914250508831879
            ],
            [
              -156.6944914511619,
              71.27589394036339,
              6.914250508831879
            ],
            [
              -156.6810060305292,
              71.27607822219636,
              11.614250508831878
            ],
            [
              -156.68048570524886,
              71.27173021281104,
              11.614250508831878
            ],
            [
              -156.693968514384,
              71.27154597211238,
              6.914250508831879
            ]
          ]
        ]
      },
      "bbox": [
        -156.6944915,
        71.27154597,
        6.914250509,
        -156.6804857,
        71.27607822,
        11.61425051
      ],
      "properties": {
        "datetime": "2018-09-11T18:10:55Z",
        "pc:count": 3539672,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98707.62472,
            "count": 3539672,
            "maximum": -98464.98286,
            "minimum": -98960.80286,
            "name": "X",
            "position": 0,
            "stddev": 134.2214886,
            "variance": 18015.40801
          },
          {
            "average": 2366048.403,
            "count": 3539672,
            "maximum": 2366285.761,
            "minimum": 2365812.041,
            "name": "Y",
            "position": 1,
            "stddev": 128.3209197,
            "variance": 16466.25845
          },
          {
            "average": 9.985785157,
            "count": 3539672,
            "maximum": 11.61425051,
            "minimum": 6.914250509,
            "name": "Z",
            "position": 2,
            "stddev": 0.7294369203,
            "variance": 0.5320782207
          },
          {
            "average": 43349.30857,
            "count": 3539672,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10104.38818,
            "variance": 102098660.4
          },
          {
            "average": 1,
            "count": 3539672,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3539672,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4991061319,
            "count": 3539672,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992716,
            "variance": 0.2499992716
          },
          {
            "average": 0.0004054047946,
            "count": 3539672,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02013058757,
            "variance": 0.000405240556
          },
          {
            "average": 1.282034042,
            "count": 3539672,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4512706979,
            "variance": 0.2036452427
          },
          {
            "average": 1.49805986,
            "count": 3539672,
            "maximum": 16.34399986,
            "minimum": -19.60199928,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.05393541,
            "variance": 101.0816173
          },
          {
            "average": 0.5037435672,
            "count": 3539672,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999860561,
            "variance": 0.2499860563
          },
          {
            "average": 423.4777573,
            "count": 3539672,
            "maximum": 461,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.55388364,
            "variance": 274.0310636
          },
          {
            "average": 220472174.3,
            "count": 3539672,
            "maximum": 220724655.5,
            "minimum": 220419431,
            "name": "GpsTime",
            "position": 12,
            "stddev": 113970.9114,
            "variance": 12989368650.0
          },
          {
            "average": 0.5037435672,
            "count": 3539672,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999860561,
            "variance": 0.2499860563
          },
          {
            "average": 0,
            "count": 3539672,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3539672,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3539672,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2185934177,
            "count": 3539672,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4132921288,
            "variance": 0.1708103837
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98960.80286,
          2365812.041,
          6.914250509,
          -98464.98286,
          2366285.761,
          11.61425051
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98960.80285781273,
                2365812.0407256433,
                6.914250508831879
              ],
              [
                -98960.80285781273,
                2366285.760725643,
                6.914250508831879
              ],
              [
                -98464.98285781272,
                2366285.760725643,
                11.614250508831878
              ],
              [
                -98464.98285781272,
                2365812.0407256433,
                11.614250508831878
              ],
              [
                -98960.80285781273,
                2365812.0407256433,
                6.914250508831879
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:10:55+00:00",
        "end_time": "2018-09-08T05:23:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1984.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1984.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1984.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1984.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6944915,
            71.27154597,
            6.914250509,
            -156.6804857,
            71.27607822,
            11.61425051
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.693968514384,
                  71.27154597211238,
                  6.914250508831879
                ],
                [
                  -156.6944914511619,
                  71.27589394036339,
                  6.914250508831879
                ],
                [
                  -156.6810060305292,
                  71.27607822219636,
                  11.614250508831878
                ],
                [
                  -156.68048570524886,
                  71.27173021281104,
                  11.614250508831878
                ],
                [
                  -156.693968514384,
                  71.27154597211238,
                  6.914250508831879
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1984.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1984.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:10:55Z",
            "pc:count": 3539672,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98707.62472,
                "count": 3539672,
                "maximum": -98464.98286,
                "minimum": -98960.80286,
                "name": "X",
                "position": 0,
                "stddev": 134.2214886,
                "variance": 18015.40801
              },
              {
                "average": 2366048.403,
                "count": 3539672,
                "maximum": 2366285.761,
                "minimum": 2365812.041,
                "name": "Y",
                "position": 1,
                "stddev": 128.3209197,
                "variance": 16466.25845
              },
              {
                "average": 9.985785157,
                "count": 3539672,
                "maximum": 11.61425051,
                "minimum": 6.914250509,
                "name": "Z",
                "position": 2,
                "stddev": 0.7294369203,
                "variance": 0.5320782207
              },
              {
                "average": 43349.30857,
                "count": 3539672,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10104.38818,
                "variance": 102098660.4
              },
              {
                "average": 1,
                "count": 3539672,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3539672,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4991061319,
                "count": 3539672,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992716,
                "variance": 0.2499992716
              },
              {
                "average": 0.0004054047946,
                "count": 3539672,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02013058757,
                "variance": 0.000405240556
              },
              {
                "average": 1.282034042,
                "count": 3539672,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4512706979,
                "variance": 0.2036452427
              },
              {
                "average": 1.49805986,
                "count": 3539672,
                "maximum": 16.34399986,
                "minimum": -19.60199928,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.05393541,
                "variance": 101.0816173
              },
              {
                "average": 0.5037435672,
                "count": 3539672,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999860561,
                "variance": 0.2499860563
              },
              {
                "average": 423.4777573,
                "count": 3539672,
                "maximum": 461,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.55388364,
                "variance": 274.0310636
              },
              {
                "average": 220472174.3,
                "count": 3539672,
                "maximum": 220724655.5,
                "minimum": 220419431,
                "name": "GpsTime",
                "position": 12,
                "stddev": 113970.9114,
                "variance": 12989368650.0
              },
              {
                "average": 0.5037435672,
                "count": 3539672,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999860561,
                "variance": 0.2499860563
              },
              {
                "average": 0,
                "count": 3539672,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3539672,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3539672,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2185934177,
                "count": 3539672,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4132921288,
                "variance": 0.1708103837
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98960.80286,
              2365812.041,
              6.914250509,
              -98464.98286,
              2366285.761,
              11.61425051
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98960.80285781273,
                    2365812.0407256433,
                    6.914250508831879
                  ],
                  [
                    -98960.80285781273,
                    2366285.760725643,
                    6.914250508831879
                  ],
                  [
                    -98464.98285781272,
                    2366285.760725643,
                    11.614250508831878
                  ],
                  [
                    -98464.98285781272,
                    2365812.0407256433,
                    11.614250508831878
                  ],
                  [
                    -98960.80285781273,
                    2365812.0407256433,
                    6.914250508831879
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:10:55+00:00",
            "end_time": "2018-09-08T05:23:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1890.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70726460471752,
              71.26343970301095,
              9.423935345757968
            ],
            [
              -156.70779008628548,
              71.26778868383553,
              9.423935345757968
            ],
            [
              -156.69431073795073,
              71.26797385214513,
              502.383935345758
            ],
            [
              -156.6937878664681,
              71.26362482999807,
              502.383935345758
            ],
            [
              -156.70726460471752,
              71.26343970301095,
              9.423935345757968
            ]
          ]
        ]
      },
      "bbox": [
        -156.7077901,
        71.2634397,
        9.423935346,
        -156.6937879,
        71.26797385,
        502.3839353
      ],
      "properties": {
        "datetime": "2018-09-11T18:13:25Z",
        "pc:count": 3928754,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99242.12489,
            "count": 3928754,
            "maximum": -98989.13988,
            "minimum": -99484.91988,
            "name": "X",
            "position": 0,
            "stddev": 135.331593,
            "variance": 18314.64006
          },
          {
            "average": 2365179.598,
            "count": 3928754,
            "maximum": 2365423.991,
            "minimum": 2364950.131,
            "name": "Y",
            "position": 1,
            "stddev": 127.0085263,
            "variance": 16131.16575
          },
          {
            "average": 11.8533813,
            "count": 3928754,
            "maximum": 502.3839353,
            "minimum": 9.423935346,
            "name": "Z",
            "position": 2,
            "stddev": 0.9861270168,
            "variance": 0.9724464933
          },
          {
            "average": 43006.46824,
            "count": 3928754,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10282.16808,
            "variance": 105722980.5
          },
          {
            "average": 1.000213808,
            "count": 3928754,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01462062194,
            "variance": 0.000213762586
          },
          {
            "average": 1.000427362,
            "count": 3928754,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02066831943,
            "variance": 0.000427179428
          },
          {
            "average": 0.4956003863,
            "count": 3928754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999807067,
            "variance": 0.249980707
          },
          {
            "average": 0.0004179442134,
            "count": 3928754,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02043941394,
            "variance": 0.0004177696423
          },
          {
            "average": 1.272052921,
            "count": 3928754,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4479575303,
            "variance": 0.2006659489
          },
          {
            "average": 3.264726078,
            "count": 3928754,
            "maximum": 20.56800079,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59807538,
            "variance": 112.3192018
          },
          {
            "average": 0.5038857103,
            "count": 3928754,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999849647,
            "variance": 0.2499849649
          },
          {
            "average": 427.5681651,
            "count": 3928754,
            "maximum": 462,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.948624,
            "variance": 359.0503515
          },
          {
            "average": 220493435.5,
            "count": 3928754,
            "maximum": 220724805.5,
            "minimum": 220420120.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129332.0025,
            "variance": 16726766880.0
          },
          {
            "average": 0.5038857103,
            "count": 3928754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999849647,
            "variance": 0.2499849649
          },
          {
            "average": 0,
            "count": 3928754,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3928754,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3928754,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2142460434,
            "count": 3928754,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4102983294,
            "variance": 0.1683447191
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99484.91988,
          2364950.131,
          9.423935346,
          -98989.13988,
          2365423.991,
          502.3839353
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99484.91988473837,
                2364950.130831836,
                9.423935345757968
              ],
              [
                -99484.91988473837,
                2365423.990831836,
                9.423935345757968
              ],
              [
                -98989.13988473837,
                2365423.990831836,
                502.383935345758
              ],
              [
                -98989.13988473837,
                2364950.130831836,
                502.383935345758
              ],
              [
                -99484.91988473837,
                2364950.130831836,
                9.423935345757968
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:13:25+00:00",
        "end_time": "2018-09-08T05:35:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1890.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1890.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1890.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1890.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7077901,
            71.2634397,
            9.423935346,
            -156.6937879,
            71.26797385,
            502.3839353
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70726460471752,
                  71.26343970301095,
                  9.423935345757968
                ],
                [
                  -156.70779008628548,
                  71.26778868383553,
                  9.423935345757968
                ],
                [
                  -156.69431073795073,
                  71.26797385214513,
                  502.383935345758
                ],
                [
                  -156.6937878664681,
                  71.26362482999807,
                  502.383935345758
                ],
                [
                  -156.70726460471752,
                  71.26343970301095,
                  9.423935345757968
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1890.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1890.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:13:25Z",
            "pc:count": 3928754,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99242.12489,
                "count": 3928754,
                "maximum": -98989.13988,
                "minimum": -99484.91988,
                "name": "X",
                "position": 0,
                "stddev": 135.331593,
                "variance": 18314.64006
              },
              {
                "average": 2365179.598,
                "count": 3928754,
                "maximum": 2365423.991,
                "minimum": 2364950.131,
                "name": "Y",
                "position": 1,
                "stddev": 127.0085263,
                "variance": 16131.16575
              },
              {
                "average": 11.8533813,
                "count": 3928754,
                "maximum": 502.3839353,
                "minimum": 9.423935346,
                "name": "Z",
                "position": 2,
                "stddev": 0.9861270168,
                "variance": 0.9724464933
              },
              {
                "average": 43006.46824,
                "count": 3928754,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10282.16808,
                "variance": 105722980.5
              },
              {
                "average": 1.000213808,
                "count": 3928754,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01462062194,
                "variance": 0.000213762586
              },
              {
                "average": 1.000427362,
                "count": 3928754,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02066831943,
                "variance": 0.000427179428
              },
              {
                "average": 0.4956003863,
                "count": 3928754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999807067,
                "variance": 0.249980707
              },
              {
                "average": 0.0004179442134,
                "count": 3928754,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02043941394,
                "variance": 0.0004177696423
              },
              {
                "average": 1.272052921,
                "count": 3928754,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4479575303,
                "variance": 0.2006659489
              },
              {
                "average": 3.264726078,
                "count": 3928754,
                "maximum": 20.56800079,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59807538,
                "variance": 112.3192018
              },
              {
                "average": 0.5038857103,
                "count": 3928754,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999849647,
                "variance": 0.2499849649
              },
              {
                "average": 427.5681651,
                "count": 3928754,
                "maximum": 462,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.948624,
                "variance": 359.0503515
              },
              {
                "average": 220493435.5,
                "count": 3928754,
                "maximum": 220724805.5,
                "minimum": 220420120.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129332.0025,
                "variance": 16726766880.0
              },
              {
                "average": 0.5038857103,
                "count": 3928754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999849647,
                "variance": 0.2499849649
              },
              {
                "average": 0,
                "count": 3928754,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3928754,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3928754,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2142460434,
                "count": 3928754,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4102983294,
                "variance": 0.1683447191
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99484.91988,
              2364950.131,
              9.423935346,
              -98989.13988,
              2365423.991,
              502.3839353
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99484.91988473837,
                    2364950.130831836,
                    9.423935345757968
                  ],
                  [
                    -99484.91988473837,
                    2365423.990831836,
                    9.423935345757968
                  ],
                  [
                    -98989.13988473837,
                    2365423.990831836,
                    502.383935345758
                  ],
                  [
                    -98989.13988473837,
                    2364950.130831836,
                    502.383935345758
                  ],
                  [
                    -99484.91988473837,
                    2364950.130831836,
                    9.423935345757968
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:13:25+00:00",
            "end_time": "2018-09-08T05:35:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1777.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83521695512977,
              71.25607878065824,
              1.937955815664884
            ],
            [
              -156.8357668911391,
              71.26042572845397,
              1.937955815664884
            ],
            [
              -156.82229793953215,
              71.26061958528743,
              28.117955815664885
            ],
            [
              -156.82175060923026,
              71.25627259426874,
              28.117955815664885
            ],
            [
              -156.83521695512977,
              71.25607878065824,
              1.937955815664884
            ]
          ]
        ]
      },
      "bbox": [
        -156.8357669,
        71.25607878,
        1.937955816,
        -156.8217506,
        71.26061959,
        28.11795582
      ],
      "properties": {
        "datetime": "2018-09-08T05:04:35Z",
        "pc:count": 2517486,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103986.5774,
            "count": 2517486,
            "maximum": -103722.646,
            "minimum": -104218.246,
            "name": "X",
            "position": 0,
            "stddev": 139.2746814,
            "variance": 19397.43687
          },
          {
            "average": 2364581.921,
            "count": 2517486,
            "maximum": 2364819.36,
            "minimum": 2364345.66,
            "name": "Y",
            "position": 1,
            "stddev": 132.4251998,
            "variance": 17536.43355
          },
          {
            "average": 6.620623338,
            "count": 2517486,
            "maximum": 28.11795582,
            "minimum": 1.937955816,
            "name": "Z",
            "position": 2,
            "stddev": 2.503489256,
            "variance": 6.267458455
          },
          {
            "average": 44190.65875,
            "count": 2517486,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10732.71288,
            "variance": 115191125.8
          },
          {
            "average": 1.000001192,
            "count": 2517486,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001091633671,
            "variance": 1.191664071e-06
          },
          {
            "average": 1.000002383,
            "count": 2517486,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001543802223,
            "variance": 2.383325303e-06
          },
          {
            "average": 0.5018462863,
            "count": 2517486,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999966905,
            "variance": 0.2499966905
          },
          {
            "average": 0.0003650467172,
            "count": 2517486,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01910271193,
            "variance": 0.0003649136031
          },
          {
            "average": 1.70435347,
            "count": 2517486,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.786897954,
            "variance": 3.193004299
          },
          {
            "average": 0.4870661476,
            "count": 2517486,
            "maximum": 16.40399933,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38076191,
            "variance": 107.7602178
          },
          {
            "average": 0.4906343074,
            "count": 2517486,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999123754,
            "variance": 0.2499123831
          },
          {
            "average": 410.2023598,
            "count": 2517486,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9381575518,
            "variance": 0.880139592
          },
          {
            "average": 220417443.7,
            "count": 2517486,
            "maximum": 220418275.8,
            "minimum": 220416021.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 523.9547008,
            "variance": 274528.5285
          },
          {
            "average": 0.4906343074,
            "count": 2517486,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999123754,
            "variance": 0.2499123831
          },
          {
            "average": 0,
            "count": 2517486,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2517486,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2517486,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2146180753,
            "count": 2517486,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4105572116,
            "variance": 0.168557224
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104218.246,
          2364345.66,
          1.937955816,
          -103722.646,
          2364819.36,
          28.11795582
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104218.24600280795,
                2364345.6600294765,
                1.937955815664884
              ],
              [
                -104218.24600280795,
                2364819.3600294767,
                1.937955815664884
              ],
              [
                -103722.64600280795,
                2364819.3600294767,
                28.117955815664885
              ],
              [
                -103722.64600280795,
                2364345.6600294765,
                28.117955815664885
              ],
              [
                -104218.24600280795,
                2364345.6600294765,
                1.937955815664884
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:04:35+00:00",
        "end_time": "2018-09-08T04:27:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1777.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1777.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1777.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1777.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8357669,
            71.25607878,
            1.937955816,
            -156.8217506,
            71.26061959,
            28.11795582
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83521695512977,
                  71.25607878065824,
                  1.937955815664884
                ],
                [
                  -156.8357668911391,
                  71.26042572845397,
                  1.937955815664884
                ],
                [
                  -156.82229793953215,
                  71.26061958528743,
                  28.117955815664885
                ],
                [
                  -156.82175060923026,
                  71.25627259426874,
                  28.117955815664885
                ],
                [
                  -156.83521695512977,
                  71.25607878065824,
                  1.937955815664884
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1777.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1777.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:04:35Z",
            "pc:count": 2517486,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103986.5774,
                "count": 2517486,
                "maximum": -103722.646,
                "minimum": -104218.246,
                "name": "X",
                "position": 0,
                "stddev": 139.2746814,
                "variance": 19397.43687
              },
              {
                "average": 2364581.921,
                "count": 2517486,
                "maximum": 2364819.36,
                "minimum": 2364345.66,
                "name": "Y",
                "position": 1,
                "stddev": 132.4251998,
                "variance": 17536.43355
              },
              {
                "average": 6.620623338,
                "count": 2517486,
                "maximum": 28.11795582,
                "minimum": 1.937955816,
                "name": "Z",
                "position": 2,
                "stddev": 2.503489256,
                "variance": 6.267458455
              },
              {
                "average": 44190.65875,
                "count": 2517486,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10732.71288,
                "variance": 115191125.8
              },
              {
                "average": 1.000001192,
                "count": 2517486,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001091633671,
                "variance": 1.191664071e-06
              },
              {
                "average": 1.000002383,
                "count": 2517486,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001543802223,
                "variance": 2.383325303e-06
              },
              {
                "average": 0.5018462863,
                "count": 2517486,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999966905,
                "variance": 0.2499966905
              },
              {
                "average": 0.0003650467172,
                "count": 2517486,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01910271193,
                "variance": 0.0003649136031
              },
              {
                "average": 1.70435347,
                "count": 2517486,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.786897954,
                "variance": 3.193004299
              },
              {
                "average": 0.4870661476,
                "count": 2517486,
                "maximum": 16.40399933,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38076191,
                "variance": 107.7602178
              },
              {
                "average": 0.4906343074,
                "count": 2517486,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999123754,
                "variance": 0.2499123831
              },
              {
                "average": 410.2023598,
                "count": 2517486,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9381575518,
                "variance": 0.880139592
              },
              {
                "average": 220417443.7,
                "count": 2517486,
                "maximum": 220418275.8,
                "minimum": 220416021.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 523.9547008,
                "variance": 274528.5285
              },
              {
                "average": 0.4906343074,
                "count": 2517486,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999123754,
                "variance": 0.2499123831
              },
              {
                "average": 0,
                "count": 2517486,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2517486,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2517486,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2146180753,
                "count": 2517486,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4105572116,
                "variance": 0.168557224
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104218.246,
              2364345.66,
              1.937955816,
              -103722.646,
              2364819.36,
              28.11795582
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104218.24600280795,
                    2364345.6600294765,
                    1.937955815664884
                  ],
                  [
                    -104218.24600280795,
                    2364819.3600294767,
                    1.937955815664884
                  ],
                  [
                    -103722.64600280795,
                    2364819.3600294767,
                    28.117955815664885
                  ],
                  [
                    -103722.64600280795,
                    2364345.6600294765,
                    28.117955815664885
                  ],
                  [
                    -104218.24600280795,
                    2364345.6600294765,
                    1.937955815664884
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:04:35+00:00",
            "end_time": "2018-09-08T04:27:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2077.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82073589206615,
              71.28467955004908,
              0.849502615496693
            ],
            [
              -156.82128034199968,
              71.28900057306873,
              0.849502615496693
            ],
            [
              -156.80779408240213,
              71.28919347431095,
              18.629502615496694
            ],
            [
              -156.80725222882438,
              71.2848724084674,
              18.629502615496694
            ],
            [
              -156.82073589206615,
              71.28467955004908,
              0.849502615496693
            ]
          ]
        ]
      },
      "bbox": [
        -156.8212803,
        71.28467955,
        0.8495026155,
        -156.8072522,
        71.28919347,
        18.62950262
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:48Z",
        "pc:count": 1750216,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103298.0915,
            "count": 1750216,
            "maximum": -103058.4575,
            "minimum": -103554.0575,
            "name": "X",
            "position": 0,
            "stddev": 136.2775711,
            "variance": 18571.5764
          },
          {
            "average": 2367670.918,
            "count": 1750216,
            "maximum": 2367904.583,
            "minimum": 2367433.803,
            "name": "Y",
            "position": 1,
            "stddev": 130.6967175,
            "variance": 17081.63197
          },
          {
            "average": 1.450878183,
            "count": 1750216,
            "maximum": 18.62950262,
            "minimum": 0.8495026155,
            "name": "Z",
            "position": 2,
            "stddev": 1.396721697,
            "variance": 1.950831498
          },
          {
            "average": 15058.0116,
            "count": 1750216,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11171.99041,
            "variance": 124813369.8
          },
          {
            "average": 1.000005714,
            "count": 1750216,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002390303561,
            "variance": 5.713551115e-06
          },
          {
            "average": 1.000011427,
            "count": 1750216,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003380390057,
            "variance": 1.142703694e-05
          },
          {
            "average": 0.504608574,
            "count": 1750216,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999789034,
            "variance": 0.2499789039
          },
          {
            "average": 0.0006193521257,
            "count": 1750216,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02487908524,
            "variance": 0.0006189688823
          },
          {
            "average": 7.179165886,
            "count": 1750216,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.927166368,
            "variance": 8.568302946
          },
          {
            "average": -1.341035097,
            "count": 1750216,
            "maximum": 16.38599968,
            "minimum": -15.70199966,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.732489094,
            "variance": 59.79138759
          },
          {
            "average": 0.4861325688,
            "count": 1750216,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998078001,
            "variance": 0.2498078371
          },
          {
            "average": 404.7842146,
            "count": 1750216,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7488332119,
            "variance": 0.5607511792
          },
          {
            "average": 220414361.2,
            "count": 1750216,
            "maximum": 220415708.7,
            "minimum": 220413467.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 448.8794561,
            "variance": 201492.7661
          },
          {
            "average": 0.4861325688,
            "count": 1750216,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998078001,
            "variance": 0.2498078371
          },
          {
            "average": 0,
            "count": 1750216,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1750216,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1750216,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07360234394,
            "count": 1750216,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2611227257,
            "variance": 0.06818507786
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103554.0575,
          2367433.803,
          0.8495026155,
          -103058.4575,
          2367904.583,
          18.62950262
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103554.05748365169,
                2367433.802879809,
                0.849502615496693
              ],
              [
                -103554.05748365169,
                2367904.582879809,
                0.849502615496693
              ],
              [
                -103058.45748365168,
                2367904.582879809,
                18.629502615496694
              ],
              [
                -103058.45748365168,
                2367433.802879809,
                18.629502615496694
              ],
              [
                -103554.05748365169,
                2367433.802879809,
                0.849502615496693
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:48+00:00",
        "end_time": "2018-09-08T03:44:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2077.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2077.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2077.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2077.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8212803,
            71.28467955,
            0.8495026155,
            -156.8072522,
            71.28919347,
            18.62950262
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82073589206615,
                  71.28467955004908,
                  0.849502615496693
                ],
                [
                  -156.82128034199968,
                  71.28900057306873,
                  0.849502615496693
                ],
                [
                  -156.80779408240213,
                  71.28919347431095,
                  18.629502615496694
                ],
                [
                  -156.80725222882438,
                  71.2848724084674,
                  18.629502615496694
                ],
                [
                  -156.82073589206615,
                  71.28467955004908,
                  0.849502615496693
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2077.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2077.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:48Z",
            "pc:count": 1750216,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103298.0915,
                "count": 1750216,
                "maximum": -103058.4575,
                "minimum": -103554.0575,
                "name": "X",
                "position": 0,
                "stddev": 136.2775711,
                "variance": 18571.5764
              },
              {
                "average": 2367670.918,
                "count": 1750216,
                "maximum": 2367904.583,
                "minimum": 2367433.803,
                "name": "Y",
                "position": 1,
                "stddev": 130.6967175,
                "variance": 17081.63197
              },
              {
                "average": 1.450878183,
                "count": 1750216,
                "maximum": 18.62950262,
                "minimum": 0.8495026155,
                "name": "Z",
                "position": 2,
                "stddev": 1.396721697,
                "variance": 1.950831498
              },
              {
                "average": 15058.0116,
                "count": 1750216,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11171.99041,
                "variance": 124813369.8
              },
              {
                "average": 1.000005714,
                "count": 1750216,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002390303561,
                "variance": 5.713551115e-06
              },
              {
                "average": 1.000011427,
                "count": 1750216,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003380390057,
                "variance": 1.142703694e-05
              },
              {
                "average": 0.504608574,
                "count": 1750216,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999789034,
                "variance": 0.2499789039
              },
              {
                "average": 0.0006193521257,
                "count": 1750216,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02487908524,
                "variance": 0.0006189688823
              },
              {
                "average": 7.179165886,
                "count": 1750216,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.927166368,
                "variance": 8.568302946
              },
              {
                "average": -1.341035097,
                "count": 1750216,
                "maximum": 16.38599968,
                "minimum": -15.70199966,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.732489094,
                "variance": 59.79138759
              },
              {
                "average": 0.4861325688,
                "count": 1750216,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998078001,
                "variance": 0.2498078371
              },
              {
                "average": 404.7842146,
                "count": 1750216,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7488332119,
                "variance": 0.5607511792
              },
              {
                "average": 220414361.2,
                "count": 1750216,
                "maximum": 220415708.7,
                "minimum": 220413467.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 448.8794561,
                "variance": 201492.7661
              },
              {
                "average": 0.4861325688,
                "count": 1750216,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998078001,
                "variance": 0.2498078371
              },
              {
                "average": 0,
                "count": 1750216,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1750216,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1750216,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07360234394,
                "count": 1750216,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2611227257,
                "variance": 0.06818507786
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103554.0575,
              2367433.803,
              0.8495026155,
              -103058.4575,
              2367904.583,
              18.62950262
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103554.05748365169,
                    2367433.802879809,
                    0.849502615496693
                  ],
                  [
                    -103554.05748365169,
                    2367904.582879809,
                    0.849502615496693
                  ],
                  [
                    -103058.45748365168,
                    2367904.582879809,
                    18.629502615496694
                  ],
                  [
                    -103058.45748365168,
                    2367433.802879809,
                    18.629502615496694
                  ],
                  [
                    -103554.05748365169,
                    2367433.802879809,
                    0.849502615496693
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:48+00:00",
            "end_time": "2018-09-08T03:44:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1613.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.88688716797077,
              71.24409594505397,
              1.035814701910761
            ],
            [
              -156.88744686818222,
              71.2484427650995,
              1.035814701910761
            ],
            [
              -156.87398990581428,
              71.24864008189101,
              12.81581470191076
            ],
            [
              -156.87343280755857,
              71.24429321788281,
              12.81581470191076
            ],
            [
              -156.88688716797077,
              71.24409594505397,
              1.035814701910761
            ]
          ]
        ]
      },
      "bbox": [
        -156.8874469,
        71.24409595,
        1.035814702,
        -156.8734328,
        71.24864008,
        12.8158147
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:27Z",
        "pc:count": 3767876,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105921.9743,
            "count": 3767876,
            "maximum": -105677.6352,
            "minimum": -106173.0752,
            "name": "X",
            "position": 0,
            "stddev": 135.9104827,
            "variance": 18471.6593
          },
          {
            "average": 2363358.288,
            "count": 3767876,
            "maximum": 2363597.769,
            "minimum": 2363124.029,
            "name": "Y",
            "position": 1,
            "stddev": 131.2062001,
            "variance": 17215.06695
          },
          {
            "average": 9.737280477,
            "count": 3767876,
            "maximum": 12.8158147,
            "minimum": 1.035814702,
            "name": "Z",
            "position": 2,
            "stddev": 2.190406542,
            "variance": 4.797880819
          },
          {
            "average": 47518.7395,
            "count": 3767876,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8618.812733,
            "variance": 74283932.92
          },
          {
            "average": 1,
            "count": 3767876,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3767876,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5010979661,
            "count": 3767876,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988608,
            "variance": 0.2499988608
          },
          {
            "average": 0.0004376470988,
            "count": 3767876,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02091544118,
            "variance": 0.0004374556799
          },
          {
            "average": 1.29275645,
            "count": 3767876,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5509139004,
            "variance": 0.3035061257
          },
          {
            "average": -0.9444106308,
            "count": 3767876,
            "maximum": 20.5739994,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.04740945,
            "variance": 100.9504366
          },
          {
            "average": 0.4698371178,
            "count": 3767876,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990894375,
            "variance": 0.2490902666
          },
          {
            "average": 419.2146788,
            "count": 3767876,
            "maximum": 466,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.16466041,
            "variance": 447.9428503
          },
          {
            "average": 220471219.4,
            "count": 3767876,
            "maximum": 220726487.2,
            "minimum": 220415979.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 117608.1712,
            "variance": 13831681930.0
          },
          {
            "average": 0.4698371178,
            "count": 3767876,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990894375,
            "variance": 0.2490902666
          },
          {
            "average": 0,
            "count": 3767876,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3767876,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3767876,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1968472423,
            "count": 3767876,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3976159547,
            "variance": 0.1580984475
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106173.0752,
          2363124.029,
          1.035814702,
          -105677.6352,
          2363597.769,
          12.8158147
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106173.07521191059,
                2363124.029466345,
                1.035814701910761
              ],
              [
                -106173.07521191059,
                2363597.769466345,
                1.035814701910761
              ],
              [
                -105677.63521191059,
                2363597.769466345,
                12.81581470191076
              ],
              [
                -105677.63521191059,
                2363124.029466345,
                12.81581470191076
              ],
              [
                -106173.07521191059,
                2363124.029466345,
                1.035814701910761
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:27+00:00",
        "end_time": "2018-09-08T04:26:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1613.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1613.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1613.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1613.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8874469,
            71.24409595,
            1.035814702,
            -156.8734328,
            71.24864008,
            12.8158147
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.88688716797077,
                  71.24409594505397,
                  1.035814701910761
                ],
                [
                  -156.88744686818222,
                  71.2484427650995,
                  1.035814701910761
                ],
                [
                  -156.87398990581428,
                  71.24864008189101,
                  12.81581470191076
                ],
                [
                  -156.87343280755857,
                  71.24429321788281,
                  12.81581470191076
                ],
                [
                  -156.88688716797077,
                  71.24409594505397,
                  1.035814701910761
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1613.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1613.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:27Z",
            "pc:count": 3767876,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105921.9743,
                "count": 3767876,
                "maximum": -105677.6352,
                "minimum": -106173.0752,
                "name": "X",
                "position": 0,
                "stddev": 135.9104827,
                "variance": 18471.6593
              },
              {
                "average": 2363358.288,
                "count": 3767876,
                "maximum": 2363597.769,
                "minimum": 2363124.029,
                "name": "Y",
                "position": 1,
                "stddev": 131.2062001,
                "variance": 17215.06695
              },
              {
                "average": 9.737280477,
                "count": 3767876,
                "maximum": 12.8158147,
                "minimum": 1.035814702,
                "name": "Z",
                "position": 2,
                "stddev": 2.190406542,
                "variance": 4.797880819
              },
              {
                "average": 47518.7395,
                "count": 3767876,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8618.812733,
                "variance": 74283932.92
              },
              {
                "average": 1,
                "count": 3767876,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3767876,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5010979661,
                "count": 3767876,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988608,
                "variance": 0.2499988608
              },
              {
                "average": 0.0004376470988,
                "count": 3767876,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02091544118,
                "variance": 0.0004374556799
              },
              {
                "average": 1.29275645,
                "count": 3767876,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5509139004,
                "variance": 0.3035061257
              },
              {
                "average": -0.9444106308,
                "count": 3767876,
                "maximum": 20.5739994,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.04740945,
                "variance": 100.9504366
              },
              {
                "average": 0.4698371178,
                "count": 3767876,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990894375,
                "variance": 0.2490902666
              },
              {
                "average": 419.2146788,
                "count": 3767876,
                "maximum": 466,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.16466041,
                "variance": 447.9428503
              },
              {
                "average": 220471219.4,
                "count": 3767876,
                "maximum": 220726487.2,
                "minimum": 220415979.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 117608.1712,
                "variance": 13831681930.0
              },
              {
                "average": 0.4698371178,
                "count": 3767876,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990894375,
                "variance": 0.2490902666
              },
              {
                "average": 0,
                "count": 3767876,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3767876,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3767876,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1968472423,
                "count": 3767876,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3976159547,
                "variance": 0.1580984475
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106173.0752,
              2363124.029,
              1.035814702,
              -105677.6352,
              2363597.769,
              12.8158147
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106173.07521191059,
                    2363124.029466345,
                    1.035814701910761
                  ],
                  [
                    -106173.07521191059,
                    2363597.769466345,
                    1.035814701910761
                  ],
                  [
                    -105677.63521191059,
                    2363597.769466345,
                    12.81581470191076
                  ],
                  [
                    -105677.63521191059,
                    2363124.029466345,
                    12.81581470191076
                  ],
                  [
                    -106173.07521191059,
                    2363124.029466345,
                    1.035814701910761
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:27+00:00",
            "end_time": "2018-09-08T04:26:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1839.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70753749513713,
              71.25934324941062,
              9.236469602467002
            ],
            [
              -156.7080628449035,
              71.26369137568152,
              9.236469602467002
            ],
            [
              -156.69458541829215,
              71.26387656511925,
              12.536469602467003
            ],
            [
              -156.69406267732046,
              71.25952839753904,
              12.536469602467003
            ],
            [
              -156.70753749513713,
              71.25934324941062,
              9.236469602467002
            ]
          ]
        ]
      },
      "bbox": [
        -156.7080628,
        71.25934325,
        9.236469602,
        -156.6940627,
        71.26387657,
        12.5364696
      ],
      "properties": {
        "datetime": "2018-09-11T18:23:49Z",
        "pc:count": 4071251,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99265.67907,
            "count": 4071251,
            "maximum": -99017.3199,
            "minimum": -99513.1199,
            "name": "X",
            "position": 0,
            "stddev": 133.8479038,
            "variance": 17915.26135
          },
          {
            "average": 2364739.803,
            "count": 4071251,
            "maximum": 2364978.704,
            "minimum": 2364504.924,
            "name": "Y",
            "position": 1,
            "stddev": 131.7768114,
            "variance": 17365.12803
          },
          {
            "average": 9.98536676,
            "count": 4071251,
            "maximum": 12.5364696,
            "minimum": 9.236469602,
            "name": "Z",
            "position": 2,
            "stddev": 0.7759748847,
            "variance": 0.6021370217
          },
          {
            "average": 33872.35618,
            "count": 4071251,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13154.58123,
            "variance": 173043007.3
          },
          {
            "average": 1,
            "count": 4071251,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4071251,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995545595,
            "count": 4071251,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999863,
            "variance": 0.249999863
          },
          {
            "average": 0.0005317775789,
            "count": 4071251,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02305417364,
            "variance": 0.0005314949221
          },
          {
            "average": 1.225552293,
            "count": 4071251,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4181159667,
            "variance": 0.1748209616
          },
          {
            "average": 0.2937492639,
            "count": 4071251,
            "maximum": 20.57999992,
            "minimum": -19.6079998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5201845,
            "variance": 110.674282
          },
          {
            "average": 0.4918414512,
            "count": 4071251,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499933495,
            "variance": 0.2499334995
          },
          {
            "average": 426.7057462,
            "count": 4071251,
            "maximum": 463,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.69039681,
            "variance": 312.9501393
          },
          {
            "average": 220482371.4,
            "count": 4071251,
            "maximum": 220725429.4,
            "minimum": 220420504.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 121378.3415,
            "variance": 14732701790.0
          },
          {
            "average": 0.4918414512,
            "count": 4071251,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499933495,
            "variance": 0.2499334995
          },
          {
            "average": 0,
            "count": 4071251,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4071251,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4071251,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2214368507,
            "count": 4071251,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4152139379,
            "variance": 0.1724026142
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99513.1199,
          2364504.924,
          9.236469602,
          -99017.3199,
          2364978.704,
          12.5364696
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99513.11990373398,
                2364504.9235674883,
                9.236469602467002
              ],
              [
                -99513.11990373398,
                2364978.7035674886,
                9.236469602467002
              ],
              [
                -99017.319903734,
                2364978.7035674886,
                12.536469602467003
              ],
              [
                -99017.319903734,
                2364504.9235674883,
                12.536469602467003
              ],
              [
                -99513.11990373398,
                2364504.9235674883,
                9.236469602467002
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:23:49+00:00",
        "end_time": "2018-09-08T05:41:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1839.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1839.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1839.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1839.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7080628,
            71.25934325,
            9.236469602,
            -156.6940627,
            71.26387657,
            12.5364696
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70753749513713,
                  71.25934324941062,
                  9.236469602467002
                ],
                [
                  -156.7080628449035,
                  71.26369137568152,
                  9.236469602467002
                ],
                [
                  -156.69458541829215,
                  71.26387656511925,
                  12.536469602467003
                ],
                [
                  -156.69406267732046,
                  71.25952839753904,
                  12.536469602467003
                ],
                [
                  -156.70753749513713,
                  71.25934324941062,
                  9.236469602467002
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1839.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1839.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:23:49Z",
            "pc:count": 4071251,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99265.67907,
                "count": 4071251,
                "maximum": -99017.3199,
                "minimum": -99513.1199,
                "name": "X",
                "position": 0,
                "stddev": 133.8479038,
                "variance": 17915.26135
              },
              {
                "average": 2364739.803,
                "count": 4071251,
                "maximum": 2364978.704,
                "minimum": 2364504.924,
                "name": "Y",
                "position": 1,
                "stddev": 131.7768114,
                "variance": 17365.12803
              },
              {
                "average": 9.98536676,
                "count": 4071251,
                "maximum": 12.5364696,
                "minimum": 9.236469602,
                "name": "Z",
                "position": 2,
                "stddev": 0.7759748847,
                "variance": 0.6021370217
              },
              {
                "average": 33872.35618,
                "count": 4071251,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13154.58123,
                "variance": 173043007.3
              },
              {
                "average": 1,
                "count": 4071251,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4071251,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995545595,
                "count": 4071251,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999863,
                "variance": 0.249999863
              },
              {
                "average": 0.0005317775789,
                "count": 4071251,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02305417364,
                "variance": 0.0005314949221
              },
              {
                "average": 1.225552293,
                "count": 4071251,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4181159667,
                "variance": 0.1748209616
              },
              {
                "average": 0.2937492639,
                "count": 4071251,
                "maximum": 20.57999992,
                "minimum": -19.6079998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5201845,
                "variance": 110.674282
              },
              {
                "average": 0.4918414512,
                "count": 4071251,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499933495,
                "variance": 0.2499334995
              },
              {
                "average": 426.7057462,
                "count": 4071251,
                "maximum": 463,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.69039681,
                "variance": 312.9501393
              },
              {
                "average": 220482371.4,
                "count": 4071251,
                "maximum": 220725429.4,
                "minimum": 220420504.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 121378.3415,
                "variance": 14732701790.0
              },
              {
                "average": 0.4918414512,
                "count": 4071251,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499933495,
                "variance": 0.2499334995
              },
              {
                "average": 0,
                "count": 4071251,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4071251,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4071251,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2214368507,
                "count": 4071251,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4152139379,
                "variance": 0.1724026142
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99513.1199,
              2364504.924,
              9.236469602,
              -99017.3199,
              2364978.704,
              12.5364696
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99513.11990373398,
                    2364504.9235674883,
                    9.236469602467002
                  ],
                  [
                    -99513.11990373398,
                    2364978.7035674886,
                    9.236469602467002
                  ],
                  [
                    -99017.319903734,
                    2364978.7035674886,
                    12.536469602467003
                  ],
                  [
                    -99017.319903734,
                    2364504.9235674883,
                    12.536469602467003
                  ],
                  [
                    -99513.11990373398,
                    2364504.9235674883,
                    9.236469602467002
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:23:49+00:00",
            "end_time": "2018-09-08T05:41:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2090.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65486630423123,
              71.2835670798861,
              5.292319122851833
            ],
            [
              -156.65538190959583,
              71.28791531974521,
              5.292319122851833
            ],
            [
              -156.64188566763278,
              71.28809697981008,
              59.95231912285183
            ],
            [
              -156.64137267733918,
              71.2837486993712,
              59.95231912285183
            ],
            [
              -156.65486630423123,
              71.2835670798861,
              5.292319122851833
            ]
          ]
        ]
      },
      "bbox": [
        -156.6553819,
        71.28356708,
        5.292319123,
        -156.6413727,
        71.28809698,
        59.95231912
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:15Z",
        "pc:count": 4071233,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97214.01065,
            "count": 4071233,
            "maximum": -96976.94545,
            "minimum": -97472.88545,
            "name": "X",
            "position": 0,
            "stddev": 134.1162058,
            "variance": 17987.15665
          },
          {
            "average": 2367303.471,
            "count": 4071233,
            "maximum": 2367535.463,
            "minimum": 2367061.763,
            "name": "Y",
            "position": 1,
            "stddev": 127.0899006,
            "variance": 16151.84282
          },
          {
            "average": 5.65975251,
            "count": 4071233,
            "maximum": 59.95231912,
            "minimum": 5.292319123,
            "name": "Z",
            "position": 2,
            "stddev": 0.2266665312,
            "variance": 0.05137771636
          },
          {
            "average": 32032.56151,
            "count": 4071233,
            "maximum": 65535,
            "minimum": 1659,
            "name": "Intensity",
            "position": 3,
            "stddev": 8654.848133,
            "variance": 74906396.21
          },
          {
            "average": 1.000000246,
            "count": 4071233,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004956065312,
            "variance": 2.456258337e-07
          },
          {
            "average": 1.000000491,
            "count": 4071233,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007008933919,
            "variance": 4.912515468e-07
          },
          {
            "average": 0.497121388,
            "count": 4071233,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999917749,
            "variance": 0.249991775
          },
          {
            "average": 0.0004028263673,
            "count": 4071233,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02006649439,
            "variance": 0.0004026641972
          },
          {
            "average": 1.252872778,
            "count": 4071233,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4346801701,
            "variance": 0.1889468503
          },
          {
            "average": 2.13089723,
            "count": 4071233,
            "maximum": 20.47800064,
            "minimum": -15.94799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60748344,
            "variance": 112.5187049
          },
          {
            "average": 0.499381637,
            "count": 4071233,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499999679,
            "variance": 0.249999679
          },
          {
            "average": 424.9230911,
            "count": 4071233,
            "maximum": 458,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.12832197,
            "variance": 293.3794136
          },
          {
            "average": 220485514.7,
            "count": 4071233,
            "maximum": 220723475.7,
            "minimum": 220419463.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 124287.2075,
            "variance": 15447309960.0
          },
          {
            "average": 0.499381637,
            "count": 4071233,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499999679,
            "variance": 0.249999679
          },
          {
            "average": 0,
            "count": 4071233,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4071233,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4071233,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2108290044,
            "count": 4071233,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4078972618,
            "variance": 0.1663801762
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97472.88545,
          2367061.763,
          5.292319123,
          -96976.94545,
          2367535.463,
          59.95231912
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97472.88545366822,
                2367061.763393624,
                5.292319122851833
              ],
              [
                -97472.88545366822,
                2367535.4633936244,
                5.292319122851833
              ],
              [
                -96976.94545366822,
                2367535.4633936244,
                59.95231912285183
              ],
              [
                -96976.94545366822,
                2367061.763393624,
                59.95231912285183
              ],
              [
                -97472.88545366822,
                2367061.763393624,
                5.292319122851833
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:15+00:00",
        "end_time": "2018-09-08T05:24:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2090.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2090.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2090.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2090.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6553819,
            71.28356708,
            5.292319123,
            -156.6413727,
            71.28809698,
            59.95231912
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65486630423123,
                  71.2835670798861,
                  5.292319122851833
                ],
                [
                  -156.65538190959583,
                  71.28791531974521,
                  5.292319122851833
                ],
                [
                  -156.64188566763278,
                  71.28809697981008,
                  59.95231912285183
                ],
                [
                  -156.64137267733918,
                  71.2837486993712,
                  59.95231912285183
                ],
                [
                  -156.65486630423123,
                  71.2835670798861,
                  5.292319122851833
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2090.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2090.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:15Z",
            "pc:count": 4071233,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97214.01065,
                "count": 4071233,
                "maximum": -96976.94545,
                "minimum": -97472.88545,
                "name": "X",
                "position": 0,
                "stddev": 134.1162058,
                "variance": 17987.15665
              },
              {
                "average": 2367303.471,
                "count": 4071233,
                "maximum": 2367535.463,
                "minimum": 2367061.763,
                "name": "Y",
                "position": 1,
                "stddev": 127.0899006,
                "variance": 16151.84282
              },
              {
                "average": 5.65975251,
                "count": 4071233,
                "maximum": 59.95231912,
                "minimum": 5.292319123,
                "name": "Z",
                "position": 2,
                "stddev": 0.2266665312,
                "variance": 0.05137771636
              },
              {
                "average": 32032.56151,
                "count": 4071233,
                "maximum": 65535,
                "minimum": 1659,
                "name": "Intensity",
                "position": 3,
                "stddev": 8654.848133,
                "variance": 74906396.21
              },
              {
                "average": 1.000000246,
                "count": 4071233,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004956065312,
                "variance": 2.456258337e-07
              },
              {
                "average": 1.000000491,
                "count": 4071233,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007008933919,
                "variance": 4.912515468e-07
              },
              {
                "average": 0.497121388,
                "count": 4071233,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999917749,
                "variance": 0.249991775
              },
              {
                "average": 0.0004028263673,
                "count": 4071233,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02006649439,
                "variance": 0.0004026641972
              },
              {
                "average": 1.252872778,
                "count": 4071233,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4346801701,
                "variance": 0.1889468503
              },
              {
                "average": 2.13089723,
                "count": 4071233,
                "maximum": 20.47800064,
                "minimum": -15.94799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60748344,
                "variance": 112.5187049
              },
              {
                "average": 0.499381637,
                "count": 4071233,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499999679,
                "variance": 0.249999679
              },
              {
                "average": 424.9230911,
                "count": 4071233,
                "maximum": 458,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.12832197,
                "variance": 293.3794136
              },
              {
                "average": 220485514.7,
                "count": 4071233,
                "maximum": 220723475.7,
                "minimum": 220419463.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 124287.2075,
                "variance": 15447309960.0
              },
              {
                "average": 0.499381637,
                "count": 4071233,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499999679,
                "variance": 0.249999679
              },
              {
                "average": 0,
                "count": 4071233,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4071233,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4071233,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2108290044,
                "count": 4071233,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4078972618,
                "variance": 0.1663801762
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97472.88545,
              2367061.763,
              5.292319123,
              -96976.94545,
              2367535.463,
              59.95231912
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97472.88545366822,
                    2367061.763393624,
                    5.292319122851833
                  ],
                  [
                    -97472.88545366822,
                    2367535.4633936244,
                    5.292319122851833
                  ],
                  [
                    -96976.94545366822,
                    2367535.4633936244,
                    59.95231912285183
                  ],
                  [
                    -96976.94545366822,
                    2367061.763393624,
                    59.95231912285183
                  ],
                  [
                    -97472.88545366822,
                    2367061.763393624,
                    5.292319122851833
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:15+00:00",
            "end_time": "2018-09-08T05:24:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1935.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78348623426473,
              71.26804733992586,
              13.285558475807662
            ],
            [
              -156.78402647613555,
              71.27239514756883,
              13.285558475807662
            ],
            [
              -156.77054553855905,
              71.27258553736077,
              29.385558475807663
            ],
            [
              -156.7700079065852,
              71.26823768723024,
              29.385558475807663
            ],
            [
              -156.78348623426473,
              71.26804733992586,
              13.285558475807662
            ]
          ]
        ]
      },
      "bbox": [
        -156.7840265,
        71.26804734,
        13.28555848,
        -156.7700079,
        71.27258554,
        29.38555848
      ],
      "properties": {
        "datetime": "2018-09-08T05:18:03Z",
        "pc:count": 3083883,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102017.078,
            "count": 3083883,
            "maximum": -101767.4698,
            "minimum": -102263.2298,
            "name": "X",
            "position": 0,
            "stddev": 134.9197033,
            "variance": 18203.32633
          },
          {
            "average": 2365806.601,
            "count": 3083883,
            "maximum": 2366040.843,
            "minimum": 2365567.103,
            "name": "Y",
            "position": 1,
            "stddev": 128.2733338,
            "variance": 16454.04816
          },
          {
            "average": 15.42679225,
            "count": 3083883,
            "maximum": 29.38555848,
            "minimum": 13.28555848,
            "name": "Z",
            "position": 2,
            "stddev": 0.6905180789,
            "variance": 0.4768152172
          },
          {
            "average": 42447.33437,
            "count": 3083883,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10897.94949,
            "variance": 118765303.1
          },
          {
            "average": 1.001908633,
            "count": 3083883,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04592688136,
            "variance": 0.002109278431
          },
          {
            "average": 1.003817265,
            "count": 3083883,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06644967325,
            "variance": 0.004415559075
          },
          {
            "average": 0.5022622454,
            "count": 3083883,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999949633,
            "variance": 0.2499949633
          },
          {
            "average": 0.0004257619371,
            "count": 3083883,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02062960983,
            "variance": 0.0004255808019
          },
          {
            "average": 1.329524175,
            "count": 3083883,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5347340944,
            "variance": 0.2859405517
          },
          {
            "average": 0.1600962495,
            "count": 3083883,
            "maximum": 16.36800003,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51990502,
            "variance": 110.6684016
          },
          {
            "average": 0.5044267244,
            "count": 3083883,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999804848,
            "variance": 0.2499804852
          },
          {
            "average": 410.8948712,
            "count": 3083883,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9284921874,
            "variance": 0.862097742
          },
          {
            "average": 220417778.5,
            "count": 3083883,
            "maximum": 220419083.6,
            "minimum": 220416859.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 524.4924064,
            "variance": 275092.2843
          },
          {
            "average": 0.5044267244,
            "count": 3083883,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999804848,
            "variance": 0.2499804852
          },
          {
            "average": 0,
            "count": 3083883,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3083883,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3083883,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2406605568,
            "count": 3083883,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4274846342,
            "variance": 0.1827431125
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102263.2298,
          2365567.103,
          13.28555848,
          -101767.4698,
          2366040.843,
          29.38555848
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102263.22984176167,
                2365567.1033339435,
                13.285558475807662
              ],
              [
                -102263.22984176167,
                2366040.8433339437,
                13.285558475807662
              ],
              [
                -101767.46984176166,
                2366040.8433339437,
                29.385558475807663
              ],
              [
                -101767.46984176166,
                2365567.1033339435,
                29.385558475807663
              ],
              [
                -102263.22984176167,
                2365567.1033339435,
                13.285558475807662
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:18:03+00:00",
        "end_time": "2018-09-08T04:40:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1935.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1935.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1935.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1935.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7840265,
            71.26804734,
            13.28555848,
            -156.7700079,
            71.27258554,
            29.38555848
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78348623426473,
                  71.26804733992586,
                  13.285558475807662
                ],
                [
                  -156.78402647613555,
                  71.27239514756883,
                  13.285558475807662
                ],
                [
                  -156.77054553855905,
                  71.27258553736077,
                  29.385558475807663
                ],
                [
                  -156.7700079065852,
                  71.26823768723024,
                  29.385558475807663
                ],
                [
                  -156.78348623426473,
                  71.26804733992586,
                  13.285558475807662
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1935.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1935.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:18:03Z",
            "pc:count": 3083883,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102017.078,
                "count": 3083883,
                "maximum": -101767.4698,
                "minimum": -102263.2298,
                "name": "X",
                "position": 0,
                "stddev": 134.9197033,
                "variance": 18203.32633
              },
              {
                "average": 2365806.601,
                "count": 3083883,
                "maximum": 2366040.843,
                "minimum": 2365567.103,
                "name": "Y",
                "position": 1,
                "stddev": 128.2733338,
                "variance": 16454.04816
              },
              {
                "average": 15.42679225,
                "count": 3083883,
                "maximum": 29.38555848,
                "minimum": 13.28555848,
                "name": "Z",
                "position": 2,
                "stddev": 0.6905180789,
                "variance": 0.4768152172
              },
              {
                "average": 42447.33437,
                "count": 3083883,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10897.94949,
                "variance": 118765303.1
              },
              {
                "average": 1.001908633,
                "count": 3083883,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04592688136,
                "variance": 0.002109278431
              },
              {
                "average": 1.003817265,
                "count": 3083883,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06644967325,
                "variance": 0.004415559075
              },
              {
                "average": 0.5022622454,
                "count": 3083883,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999949633,
                "variance": 0.2499949633
              },
              {
                "average": 0.0004257619371,
                "count": 3083883,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02062960983,
                "variance": 0.0004255808019
              },
              {
                "average": 1.329524175,
                "count": 3083883,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5347340944,
                "variance": 0.2859405517
              },
              {
                "average": 0.1600962495,
                "count": 3083883,
                "maximum": 16.36800003,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51990502,
                "variance": 110.6684016
              },
              {
                "average": 0.5044267244,
                "count": 3083883,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999804848,
                "variance": 0.2499804852
              },
              {
                "average": 410.8948712,
                "count": 3083883,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9284921874,
                "variance": 0.862097742
              },
              {
                "average": 220417778.5,
                "count": 3083883,
                "maximum": 220419083.6,
                "minimum": 220416859.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 524.4924064,
                "variance": 275092.2843
              },
              {
                "average": 0.5044267244,
                "count": 3083883,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999804848,
                "variance": 0.2499804852
              },
              {
                "average": 0,
                "count": 3083883,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3083883,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3083883,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2406605568,
                "count": 3083883,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4274846342,
                "variance": 0.1827431125
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102263.2298,
              2365567.103,
              13.28555848,
              -101767.4698,
              2366040.843,
              29.38555848
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102263.22984176167,
                    2365567.1033339435,
                    13.285558475807662
                  ],
                  [
                    -102263.22984176167,
                    2366040.8433339437,
                    13.285558475807662
                  ],
                  [
                    -101767.46984176166,
                    2366040.8433339437,
                    29.385558475807663
                  ],
                  [
                    -101767.46984176166,
                    2365567.1033339435,
                    29.385558475807663
                  ],
                  [
                    -102263.22984176167,
                    2365567.1033339435,
                    13.285558475807662
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:18:03+00:00",
            "end_time": "2018-09-08T04:40:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1564.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82346577634144,
              71.23961080609125,
              11.644424453165902
            ],
            [
              -156.82401312491882,
              71.24395804136738,
              11.644424453165902
            ],
            [
              -156.8105555859926,
              71.24415104899192,
              14.624424453165902
            ],
            [
              -156.81001083950267,
              71.23980377072023,
              14.624424453165902
            ],
            [
              -156.82346577634144,
              71.23961080609125,
              11.644424453165902
            ]
          ]
        ]
      },
      "bbox": [
        -156.8240131,
        71.23961081,
        11.64442445,
        -156.8100108,
        71.24415105,
        14.62442445
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:02Z",
        "pc:count": 4100225,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103615.2985,
            "count": 4100225,
            "maximum": -103367.2202,
            "minimum": -103862.7602,
            "name": "X",
            "position": 0,
            "stddev": 136.6087451,
            "variance": 18661.94924
          },
          {
            "average": 2362775.829,
            "count": 4100225,
            "maximum": 2363009.603,
            "minimum": 2362535.823,
            "name": "Y",
            "position": 1,
            "stddev": 126.9929515,
            "variance": 16127.20974
          },
          {
            "average": 13.00507459,
            "count": 4100225,
            "maximum": 14.62442445,
            "minimum": 11.64442445,
            "name": "Z",
            "position": 2,
            "stddev": 0.5034379942,
            "variance": 0.253449814
          },
          {
            "average": 45677.42736,
            "count": 4100225,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10899.43953,
            "variance": 118797782.1
          },
          {
            "average": 1,
            "count": 4100225,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4100225,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4930707461,
            "count": 4100225,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999520441,
            "variance": 0.2499520464
          },
          {
            "average": 0.0005053381217,
            "count": 4100225,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.022474049,
            "variance": 0.0005050828783
          },
          {
            "average": 1.264417441,
            "count": 4100225,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4428024276,
            "variance": 0.1960739899
          },
          {
            "average": 5.802175244,
            "count": 4100225,
            "maximum": 20.70599937,
            "minimum": -15.71399975,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.55989446,
            "variance": 111.5113711
          },
          {
            "average": 0.5296475193,
            "count": 4100225,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991203115,
            "variance": 0.2491210854
          },
          {
            "average": 430.2155367,
            "count": 4100225,
            "maximum": 466,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.40798862,
            "variance": 547.9339311
          },
          {
            "average": 220513322.7,
            "count": 4100225,
            "maximum": 220726522.6,
            "minimum": 220419131.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 141102.4635,
            "variance": 19909905200.0
          },
          {
            "average": 0.5296475193,
            "count": 4100225,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991203115,
            "variance": 0.2491210854
          },
          {
            "average": 0,
            "count": 4100225,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4100225,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4100225,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2795478297,
            "count": 4100225,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4487771047,
            "variance": 0.2014008897
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103862.7602,
          2362535.823,
          11.64442445,
          -103367.2202,
          2363009.603,
          14.62442445
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103862.76018221253,
                2362535.8230904923,
                11.644424453165902
              ],
              [
                -103862.76018221253,
                2363009.6030904925,
                11.644424453165902
              ],
              [
                -103367.22018221252,
                2363009.6030904925,
                14.624424453165902
              ],
              [
                -103367.22018221252,
                2362535.8230904923,
                14.624424453165902
              ],
              [
                -103862.76018221253,
                2362535.8230904923,
                11.644424453165902
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:02+00:00",
        "end_time": "2018-09-08T05:18:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1564.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1564.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1564.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1564.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8240131,
            71.23961081,
            11.64442445,
            -156.8100108,
            71.24415105,
            14.62442445
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82346577634144,
                  71.23961080609125,
                  11.644424453165902
                ],
                [
                  -156.82401312491882,
                  71.24395804136738,
                  11.644424453165902
                ],
                [
                  -156.8105555859926,
                  71.24415104899192,
                  14.624424453165902
                ],
                [
                  -156.81001083950267,
                  71.23980377072023,
                  14.624424453165902
                ],
                [
                  -156.82346577634144,
                  71.23961080609125,
                  11.644424453165902
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1564.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1564.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:02Z",
            "pc:count": 4100225,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103615.2985,
                "count": 4100225,
                "maximum": -103367.2202,
                "minimum": -103862.7602,
                "name": "X",
                "position": 0,
                "stddev": 136.6087451,
                "variance": 18661.94924
              },
              {
                "average": 2362775.829,
                "count": 4100225,
                "maximum": 2363009.603,
                "minimum": 2362535.823,
                "name": "Y",
                "position": 1,
                "stddev": 126.9929515,
                "variance": 16127.20974
              },
              {
                "average": 13.00507459,
                "count": 4100225,
                "maximum": 14.62442445,
                "minimum": 11.64442445,
                "name": "Z",
                "position": 2,
                "stddev": 0.5034379942,
                "variance": 0.253449814
              },
              {
                "average": 45677.42736,
                "count": 4100225,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10899.43953,
                "variance": 118797782.1
              },
              {
                "average": 1,
                "count": 4100225,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4100225,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4930707461,
                "count": 4100225,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999520441,
                "variance": 0.2499520464
              },
              {
                "average": 0.0005053381217,
                "count": 4100225,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.022474049,
                "variance": 0.0005050828783
              },
              {
                "average": 1.264417441,
                "count": 4100225,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4428024276,
                "variance": 0.1960739899
              },
              {
                "average": 5.802175244,
                "count": 4100225,
                "maximum": 20.70599937,
                "minimum": -15.71399975,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.55989446,
                "variance": 111.5113711
              },
              {
                "average": 0.5296475193,
                "count": 4100225,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991203115,
                "variance": 0.2491210854
              },
              {
                "average": 430.2155367,
                "count": 4100225,
                "maximum": 466,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.40798862,
                "variance": 547.9339311
              },
              {
                "average": 220513322.7,
                "count": 4100225,
                "maximum": 220726522.6,
                "minimum": 220419131.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 141102.4635,
                "variance": 19909905200.0
              },
              {
                "average": 0.5296475193,
                "count": 4100225,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991203115,
                "variance": 0.2491210854
              },
              {
                "average": 0,
                "count": 4100225,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4100225,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4100225,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2795478297,
                "count": 4100225,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4487771047,
                "variance": 0.2014008897
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103862.7602,
              2362535.823,
              11.64442445,
              -103367.2202,
              2363009.603,
              14.62442445
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103862.76018221253,
                    2362535.8230904923,
                    11.644424453165902
                  ],
                  [
                    -103862.76018221253,
                    2363009.6030904925,
                    11.644424453165902
                  ],
                  [
                    -103367.22018221252,
                    2363009.6030904925,
                    14.624424453165902
                  ],
                  [
                    -103367.22018221252,
                    2362535.8230904923,
                    14.624424453165902
                  ],
                  [
                    -103862.76018221253,
                    2362535.8230904923,
                    11.644424453165902
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:02+00:00",
            "end_time": "2018-09-08T05:18:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1985.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68121841144568,
              71.27145738100344,
              -62.441325998118145
            ],
            [
              -156.68173887254264,
              71.27580538047071,
              -62.441325998118145
            ],
            [
              -156.66825176893732,
              71.27598881044152,
              480.7186740018818
            ],
            [
              -156.66773391971435,
              71.27164077002998,
              480.7186740018818
            ],
            [
              -156.68121841144568,
              71.27145738100344,
              -62.441325998118145
            ]
          ]
        ]
      },
      "bbox": [
        -156.6817389,
        71.27145738,
        -62.441326,
        -156.6677339,
        71.27598881,
        480.718674
      ],
      "properties": {
        "datetime": "2018-09-11T18:10:49Z",
        "pc:count": 3919728,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98240.35003,
            "count": 3919728,
            "maximum": -97997.20229,
            "minimum": -98493.08229,
            "name": "X",
            "position": 0,
            "stddev": 135.1802479,
            "variance": 18273.69941
          },
          {
            "average": 2366033.158,
            "count": 3919728,
            "maximum": 2366257.17,
            "minimum": 2365783.45,
            "name": "Y",
            "position": 1,
            "stddev": 128.7463516,
            "variance": 16575.62304
          },
          {
            "average": 8.884680592,
            "count": 3919728,
            "maximum": 480.718674,
            "minimum": -62.441326,
            "name": "Z",
            "position": 2,
            "stddev": 1.615232961,
            "variance": 2.608977518
          },
          {
            "average": 42441.59071,
            "count": 3919728,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10047.34895,
            "variance": 100949221
          },
          {
            "average": 1.000123223,
            "count": 3919728,
            "maximum": 15,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03226652682,
            "variance": 0.001041128753
          },
          {
            "average": 1.000243384,
            "count": 3919728,
            "maximum": 15,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05407516994,
            "variance": 0.002924124004
          },
          {
            "average": 0.4999280562,
            "count": 3919728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000586,
            "variance": 0.2500000586
          },
          {
            "average": 0.0004321728446,
            "count": 3919728,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02078427727,
            "variance": 0.0004319861815
          },
          {
            "average": 1.272225777,
            "count": 3919728,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.452757474,
            "variance": 0.2049893303
          },
          {
            "average": 1.826308697,
            "count": 3919728,
            "maximum": 20.52599907,
            "minimum": -19.77599907,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51309445,
            "variance": 110.5251549
          },
          {
            "average": 0.5150946698,
            "count": 3919728,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997721628,
            "variance": 0.2497722147
          },
          {
            "average": 425.1769597,
            "count": 3919728,
            "maximum": 461,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.93473046,
            "variance": 286.7850957
          },
          {
            "average": 220479571.2,
            "count": 3919728,
            "maximum": 220724649.3,
            "minimum": 220420097.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 119587.2612,
            "variance": 14301113040.0
          },
          {
            "average": 0.5150946698,
            "count": 3919728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997721628,
            "variance": 0.2497722147
          },
          {
            "average": 0,
            "count": 3919728,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3919728,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3919728,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2171224636,
            "count": 3919728,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.412286724,
            "variance": 0.1699803428
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98493.08229,
          2365783.45,
          -62.441326,
          -97997.20229,
          2366257.17,
          480.718674
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98493.08228661623,
                2365783.44988351,
                -62.441325998118145
              ],
              [
                -98493.08228661623,
                2366257.1698835096,
                -62.441325998118145
              ],
              [
                -97997.20228661623,
                2366257.1698835096,
                480.7186740018818
              ],
              [
                -97997.20228661623,
                2365783.44988351,
                480.7186740018818
              ],
              [
                -98493.08228661623,
                2365783.44988351,
                -62.441325998118145
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:10:49+00:00",
        "end_time": "2018-09-08T05:34:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1985.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1985.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1985.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1985.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6817389,
            71.27145738,
            -62.441326,
            -156.6677339,
            71.27598881,
            480.718674
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68121841144568,
                  71.27145738100344,
                  -62.441325998118145
                ],
                [
                  -156.68173887254264,
                  71.27580538047071,
                  -62.441325998118145
                ],
                [
                  -156.66825176893732,
                  71.27598881044152,
                  480.7186740018818
                ],
                [
                  -156.66773391971435,
                  71.27164077002998,
                  480.7186740018818
                ],
                [
                  -156.68121841144568,
                  71.27145738100344,
                  -62.441325998118145
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1985.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1985.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:10:49Z",
            "pc:count": 3919728,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98240.35003,
                "count": 3919728,
                "maximum": -97997.20229,
                "minimum": -98493.08229,
                "name": "X",
                "position": 0,
                "stddev": 135.1802479,
                "variance": 18273.69941
              },
              {
                "average": 2366033.158,
                "count": 3919728,
                "maximum": 2366257.17,
                "minimum": 2365783.45,
                "name": "Y",
                "position": 1,
                "stddev": 128.7463516,
                "variance": 16575.62304
              },
              {
                "average": 8.884680592,
                "count": 3919728,
                "maximum": 480.718674,
                "minimum": -62.441326,
                "name": "Z",
                "position": 2,
                "stddev": 1.615232961,
                "variance": 2.608977518
              },
              {
                "average": 42441.59071,
                "count": 3919728,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10047.34895,
                "variance": 100949221
              },
              {
                "average": 1.000123223,
                "count": 3919728,
                "maximum": 15,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03226652682,
                "variance": 0.001041128753
              },
              {
                "average": 1.000243384,
                "count": 3919728,
                "maximum": 15,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05407516994,
                "variance": 0.002924124004
              },
              {
                "average": 0.4999280562,
                "count": 3919728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000586,
                "variance": 0.2500000586
              },
              {
                "average": 0.0004321728446,
                "count": 3919728,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02078427727,
                "variance": 0.0004319861815
              },
              {
                "average": 1.272225777,
                "count": 3919728,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.452757474,
                "variance": 0.2049893303
              },
              {
                "average": 1.826308697,
                "count": 3919728,
                "maximum": 20.52599907,
                "minimum": -19.77599907,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51309445,
                "variance": 110.5251549
              },
              {
                "average": 0.5150946698,
                "count": 3919728,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997721628,
                "variance": 0.2497722147
              },
              {
                "average": 425.1769597,
                "count": 3919728,
                "maximum": 461,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.93473046,
                "variance": 286.7850957
              },
              {
                "average": 220479571.2,
                "count": 3919728,
                "maximum": 220724649.3,
                "minimum": 220420097.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 119587.2612,
                "variance": 14301113040.0
              },
              {
                "average": 0.5150946698,
                "count": 3919728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997721628,
                "variance": 0.2497722147
              },
              {
                "average": 0,
                "count": 3919728,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3919728,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3919728,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2171224636,
                "count": 3919728,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.412286724,
                "variance": 0.1699803428
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98493.08229,
              2365783.45,
              -62.441326,
              -97997.20229,
              2366257.17,
              480.718674
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98493.08228661623,
                    2365783.44988351,
                    -62.441325998118145
                  ],
                  [
                    -98493.08228661623,
                    2366257.1698835096,
                    -62.441325998118145
                  ],
                  [
                    -97997.20228661623,
                    2366257.1698835096,
                    480.7186740018818
                  ],
                  [
                    -97997.20228661623,
                    2365783.44988351,
                    480.7186740018818
                  ],
                  [
                    -98493.08228661623,
                    2365783.44988351,
                    -62.441325998118145
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:10:49+00:00",
            "end_time": "2018-09-08T05:34:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2078.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80797434598463,
              71.28459926712338,
              -3.846330682811312
            ],
            [
              -156.80851962547158,
              71.28894657392003,
              -3.846330682811312
            ],
            [
              -156.79503437750253,
              71.28913858556078,
              25.53366931718869
            ],
            [
              -156.79449171000283,
              71.28479123587861,
              25.53366931718869
            ],
            [
              -156.80797434598463,
              71.28459926712338,
              -3.846330682811312
            ]
          ]
        ]
      },
      "bbox": [
        -156.8085196,
        71.28459927,
        -3.846330683,
        -156.7944917,
        71.28913859,
        25.53366932
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:48Z",
        "pc:count": 2747264,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102825.4117,
            "count": 2747264,
            "maximum": -102590.6485,
            "minimum": -103086.2085,
            "name": "X",
            "position": 0,
            "stddev": 133.7711021,
            "variance": 17894.70776
          },
          {
            "average": 2367625.581,
            "count": 2747264,
            "maximum": 2367878.858,
            "minimum": 2367405.218,
            "name": "Y",
            "position": 1,
            "stddev": 126.0795177,
            "variance": 15896.04478
          },
          {
            "average": 10.44253586,
            "count": 2747264,
            "maximum": 25.53366932,
            "minimum": -3.846330683,
            "name": "Z",
            "position": 2,
            "stddev": 4.180091188,
            "variance": 17.47316234
          },
          {
            "average": 31007.54103,
            "count": 2747264,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13136.20178,
            "variance": 172559797.1
          },
          {
            "average": 1.008665349,
            "count": 2747264,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09561425265,
            "variance": 0.009142085309
          },
          {
            "average": 1.017210942,
            "count": 2747264,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1360506273,
            "variance": 0.0185097732
          },
          {
            "average": 0.497554294,
            "count": 2747264,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999941095,
            "variance": 0.2499941095
          },
          {
            "average": 0.0004553621348,
            "count": 2747264,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02133436069,
            "variance": 0.0004551549458
          },
          {
            "average": 2.045166755,
            "count": 2747264,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.113873709,
            "variance": 4.46846206
          },
          {
            "average": 0.3690222785,
            "count": 2747264,
            "maximum": 16.29599953,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.988643726,
            "variance": 99.77300348
          },
          {
            "average": 0.4496389863,
            "count": 2747264,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4974573935,
            "variance": 0.2474638584
          },
          {
            "average": 405.68494,
            "count": 2747264,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8929004835,
            "variance": 0.7972712734
          },
          {
            "average": 220414885.1,
            "count": 2747264,
            "maximum": 220415708.4,
            "minimum": 220413811,
            "name": "GpsTime",
            "position": 12,
            "stddev": 517.4002056,
            "variance": 267702.9727
          },
          {
            "average": 0.4496389863,
            "count": 2747264,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4974573935,
            "variance": 0.2474638584
          },
          {
            "average": 0,
            "count": 2747264,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2747264,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2747264,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2167436402,
            "count": 2747264,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4120265725,
            "variance": 0.1697658964
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103086.2085,
          2367405.218,
          -3.846330683,
          -102590.6485,
          2367878.858,
          25.53366932
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103086.20846651768,
                2367405.2175837294,
                -3.846330682811312
              ],
              [
                -103086.20846651768,
                2367878.857583729,
                -3.846330682811312
              ],
              [
                -102590.64846651768,
                2367878.857583729,
                25.53366931718869
              ],
              [
                -102590.64846651768,
                2367405.2175837294,
                25.53366931718869
              ],
              [
                -103086.20846651768,
                2367405.2175837294,
                -3.846330682811312
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:48+00:00",
        "end_time": "2018-09-08T03:50:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2078.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2078.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2078.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2078.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8085196,
            71.28459927,
            -3.846330683,
            -156.7944917,
            71.28913859,
            25.53366932
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80797434598463,
                  71.28459926712338,
                  -3.846330682811312
                ],
                [
                  -156.80851962547158,
                  71.28894657392003,
                  -3.846330682811312
                ],
                [
                  -156.79503437750253,
                  71.28913858556078,
                  25.53366931718869
                ],
                [
                  -156.79449171000283,
                  71.28479123587861,
                  25.53366931718869
                ],
                [
                  -156.80797434598463,
                  71.28459926712338,
                  -3.846330682811312
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2078.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2078.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:48Z",
            "pc:count": 2747264,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102825.4117,
                "count": 2747264,
                "maximum": -102590.6485,
                "minimum": -103086.2085,
                "name": "X",
                "position": 0,
                "stddev": 133.7711021,
                "variance": 17894.70776
              },
              {
                "average": 2367625.581,
                "count": 2747264,
                "maximum": 2367878.858,
                "minimum": 2367405.218,
                "name": "Y",
                "position": 1,
                "stddev": 126.0795177,
                "variance": 15896.04478
              },
              {
                "average": 10.44253586,
                "count": 2747264,
                "maximum": 25.53366932,
                "minimum": -3.846330683,
                "name": "Z",
                "position": 2,
                "stddev": 4.180091188,
                "variance": 17.47316234
              },
              {
                "average": 31007.54103,
                "count": 2747264,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13136.20178,
                "variance": 172559797.1
              },
              {
                "average": 1.008665349,
                "count": 2747264,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09561425265,
                "variance": 0.009142085309
              },
              {
                "average": 1.017210942,
                "count": 2747264,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1360506273,
                "variance": 0.0185097732
              },
              {
                "average": 0.497554294,
                "count": 2747264,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999941095,
                "variance": 0.2499941095
              },
              {
                "average": 0.0004553621348,
                "count": 2747264,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02133436069,
                "variance": 0.0004551549458
              },
              {
                "average": 2.045166755,
                "count": 2747264,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.113873709,
                "variance": 4.46846206
              },
              {
                "average": 0.3690222785,
                "count": 2747264,
                "maximum": 16.29599953,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.988643726,
                "variance": 99.77300348
              },
              {
                "average": 0.4496389863,
                "count": 2747264,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4974573935,
                "variance": 0.2474638584
              },
              {
                "average": 405.68494,
                "count": 2747264,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8929004835,
                "variance": 0.7972712734
              },
              {
                "average": 220414885.1,
                "count": 2747264,
                "maximum": 220415708.4,
                "minimum": 220413811,
                "name": "GpsTime",
                "position": 12,
                "stddev": 517.4002056,
                "variance": 267702.9727
              },
              {
                "average": 0.4496389863,
                "count": 2747264,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4974573935,
                "variance": 0.2474638584
              },
              {
                "average": 0,
                "count": 2747264,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2747264,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2747264,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2167436402,
                "count": 2747264,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4120265725,
                "variance": 0.1697658964
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103086.2085,
              2367405.218,
              -3.846330683,
              -102590.6485,
              2367878.858,
              25.53366932
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103086.20846651768,
                    2367405.2175837294,
                    -3.846330682811312
                  ],
                  [
                    -103086.20846651768,
                    2367878.857583729,
                    -3.846330682811312
                  ],
                  [
                    -102590.64846651768,
                    2367878.857583729,
                    25.53366931718869
                  ],
                  [
                    -102590.64846651768,
                    2367405.2175837294,
                    25.53366931718869
                  ],
                  [
                    -103086.20846651768,
                    2367405.2175837294,
                    -3.846330682811312
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:48+00:00",
            "end_time": "2018-09-08T03:50:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1730.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75903425865152,
              71.25149256260437,
              9.947720552731615
            ],
            [
              -156.75956933958688,
              71.25583977047215,
              9.947720552731615
            ],
            [
              -156.74610031994115,
              71.25602843361231,
              23.927720552731614
            ],
            [
              -156.7455678446813,
              71.25168118368825,
              23.927720552731614
            ],
            [
              -156.75903425865152,
              71.25149256260437,
              9.947720552731615
            ]
          ]
        ]
      },
      "bbox": [
        -156.7595693,
        71.25149256,
        9.947720553,
        -156.7455678,
        71.25602843,
        23.92772055
      ],
      "properties": {
        "datetime": "2018-09-11T18:26:32Z",
        "pc:count": 2815655,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101226.4471,
            "count": 2815655,
            "maximum": -100944.5787,
            "minimum": -101440.2587,
            "name": "X",
            "position": 0,
            "stddev": 132.1333025,
            "variance": 17459.20964
          },
          {
            "average": 2363985.628,
            "count": 2815655,
            "maximum": 2364202.53,
            "minimum": 2363728.81,
            "name": "Y",
            "position": 1,
            "stddev": 125.0522609,
            "variance": 15638.06797
          },
          {
            "average": 12.30737986,
            "count": 2815655,
            "maximum": 23.92772055,
            "minimum": 9.947720553,
            "name": "Z",
            "position": 2,
            "stddev": 1.006707676,
            "variance": 1.013460345
          },
          {
            "average": 42721.97119,
            "count": 2815655,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 15675.62085,
            "variance": 245725089.1
          },
          {
            "average": 1,
            "count": 2815655,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2815655,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4983362663,
            "count": 2815655,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973208,
            "variance": 0.2499973208
          },
          {
            "average": 0.0005384182366,
            "count": 2815655,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02319759758,
            "variance": 0.0005381285335
          },
          {
            "average": 2.606893955,
            "count": 2815655,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.913239985,
            "variance": 8.486967213
          },
          {
            "average": 2.231944266,
            "count": 2815655,
            "maximum": 20.5739994,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.77241619,
            "variance": 116.0449505
          },
          {
            "average": 0.4968215211,
            "count": 2815655,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499989986,
            "variance": 0.2499899861
          },
          {
            "average": 423.8503698,
            "count": 2815655,
            "maximum": 464,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.65558267,
            "variance": 311.7195993
          },
          {
            "average": 220470032.4,
            "count": 2815655,
            "maximum": 220725592.6,
            "minimum": 220419377.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 112287.6071,
            "variance": 12608506720.0
          },
          {
            "average": 0.4968215211,
            "count": 2815655,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499989986,
            "variance": 0.2499899861
          },
          {
            "average": 0,
            "count": 2815655,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2815655,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2815655,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2234140901,
            "count": 2815655,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4165336674,
            "variance": 0.1735002961
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101440.2587,
          2363728.81,
          9.947720553,
          -100944.5787,
          2364202.53,
          23.92772055
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101440.25871588287,
                2363728.8098534257,
                9.947720552731615
              ],
              [
                -101440.25871588287,
                2364202.5298534255,
                9.947720552731615
              ],
              [
                -100944.57871588288,
                2364202.5298534255,
                23.927720552731614
              ],
              [
                -100944.57871588288,
                2363728.8098534257,
                23.927720552731614
              ],
              [
                -101440.25871588287,
                2363728.8098534257,
                9.947720552731615
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:26:32+00:00",
        "end_time": "2018-09-08T05:22:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1730.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1730.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1730.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1730.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7595693,
            71.25149256,
            9.947720553,
            -156.7455678,
            71.25602843,
            23.92772055
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75903425865152,
                  71.25149256260437,
                  9.947720552731615
                ],
                [
                  -156.75956933958688,
                  71.25583977047215,
                  9.947720552731615
                ],
                [
                  -156.74610031994115,
                  71.25602843361231,
                  23.927720552731614
                ],
                [
                  -156.7455678446813,
                  71.25168118368825,
                  23.927720552731614
                ],
                [
                  -156.75903425865152,
                  71.25149256260437,
                  9.947720552731615
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1730.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1730.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:26:32Z",
            "pc:count": 2815655,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101226.4471,
                "count": 2815655,
                "maximum": -100944.5787,
                "minimum": -101440.2587,
                "name": "X",
                "position": 0,
                "stddev": 132.1333025,
                "variance": 17459.20964
              },
              {
                "average": 2363985.628,
                "count": 2815655,
                "maximum": 2364202.53,
                "minimum": 2363728.81,
                "name": "Y",
                "position": 1,
                "stddev": 125.0522609,
                "variance": 15638.06797
              },
              {
                "average": 12.30737986,
                "count": 2815655,
                "maximum": 23.92772055,
                "minimum": 9.947720553,
                "name": "Z",
                "position": 2,
                "stddev": 1.006707676,
                "variance": 1.013460345
              },
              {
                "average": 42721.97119,
                "count": 2815655,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 15675.62085,
                "variance": 245725089.1
              },
              {
                "average": 1,
                "count": 2815655,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2815655,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4983362663,
                "count": 2815655,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973208,
                "variance": 0.2499973208
              },
              {
                "average": 0.0005384182366,
                "count": 2815655,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02319759758,
                "variance": 0.0005381285335
              },
              {
                "average": 2.606893955,
                "count": 2815655,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.913239985,
                "variance": 8.486967213
              },
              {
                "average": 2.231944266,
                "count": 2815655,
                "maximum": 20.5739994,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.77241619,
                "variance": 116.0449505
              },
              {
                "average": 0.4968215211,
                "count": 2815655,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499989986,
                "variance": 0.2499899861
              },
              {
                "average": 423.8503698,
                "count": 2815655,
                "maximum": 464,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.65558267,
                "variance": 311.7195993
              },
              {
                "average": 220470032.4,
                "count": 2815655,
                "maximum": 220725592.6,
                "minimum": 220419377.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 112287.6071,
                "variance": 12608506720.0
              },
              {
                "average": 0.4968215211,
                "count": 2815655,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499989986,
                "variance": 0.2499899861
              },
              {
                "average": 0,
                "count": 2815655,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2815655,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2815655,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2234140901,
                "count": 2815655,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4165336674,
                "variance": 0.1735002961
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101440.2587,
              2363728.81,
              9.947720553,
              -100944.5787,
              2364202.53,
              23.92772055
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101440.25871588287,
                    2363728.8098534257,
                    9.947720552731615
                  ],
                  [
                    -101440.25871588287,
                    2364202.5298534255,
                    9.947720552731615
                  ],
                  [
                    -100944.57871588288,
                    2364202.5298534255,
                    23.927720552731614
                  ],
                  [
                    -100944.57871588288,
                    2363728.8098534257,
                    23.927720552731614
                  ],
                  [
                    -101440.25871588287,
                    2363728.8098534257,
                    9.947720552731615
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:26:32+00:00",
            "end_time": "2018-09-08T05:22:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1877.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.86952593919594,
              71.26455656207969,
              0.899165893688581
            ],
            [
              -156.87005221682998,
              71.26866542509244,
              0.899165893688581
            ],
            [
              -156.8600204391212,
              71.2688116054391,
              1.519165893688581
            ],
            [
              -156.85949599644297,
              71.26470271160369,
              1.519165893688581
            ],
            [
              -156.86952593919594,
              71.26455656207969,
              0.899165893688581
            ]
          ]
        ]
      },
      "bbox": [
        -156.8700522,
        71.26455656,
        0.8991658937,
        -156.859496,
        71.26881161,
        1.519165894
      ],
      "properties": {
        "datetime": "2018-09-08T04:26:58Z",
        "pc:count": 700720,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105201.2703,
            "count": 700720,
            "maximum": -105069.7428,
            "minimum": -105438.7428,
            "name": "X",
            "position": 0,
            "stddev": 84.34642129,
            "variance": 7114.318785
          },
          {
            "average": 2365498.821,
            "count": 700720,
            "maximum": 2365769.7,
            "minimum": 2365321.96,
            "name": "Y",
            "position": 1,
            "stddev": 115.2722473,
            "variance": 13287.691
          },
          {
            "average": 1.181720323,
            "count": 700720,
            "maximum": 1.519165894,
            "minimum": 0.8991658937,
            "name": "Z",
            "position": 2,
            "stddev": 0.06841990605,
            "variance": 0.004681283545
          },
          {
            "average": 16342.30487,
            "count": 700720,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12417.23,
            "variance": 154187601
          },
          {
            "average": 1,
            "count": 700720,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 700720,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5038645964,
            "count": 700720,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999854214,
            "variance": 0.2499854216
          },
          {
            "average": 0.0005294554173,
            "count": 700720,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0230038225,
            "variance": 0.0005291758494
          },
          {
            "average": 7.641674278,
            "count": 700720,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.522116972,
            "variance": 6.361074022
          },
          {
            "average": -0.875301119,
            "count": 700720,
            "maximum": 16.33200073,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.640173789,
            "variance": 58.37225553
          },
          {
            "average": 0.4861000114,
            "count": 700720,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998071096,
            "variance": 0.2498071468
          },
          {
            "average": 406.0639813,
            "count": 700720,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.653628713,
            "variance": 0.4272304945
          },
          {
            "average": 220415056.5,
            "count": 700720,
            "maximum": 220416018.6,
            "minimum": 220414626.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 411.7983007,
            "variance": 169577.8405
          },
          {
            "average": 0.4861000114,
            "count": 700720,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998071096,
            "variance": 0.2498071468
          },
          {
            "average": 0,
            "count": 700720,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 700720,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 700720,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05465235758,
            "count": 700720,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2273005744,
            "variance": 0.05166555112
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105438.7428,
          2365321.96,
          0.8991658937,
          -105069.7428,
          2365769.7,
          1.519165894
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105438.74276269233,
                2365321.9595441893,
                0.899165893688581
              ],
              [
                -105438.74276269233,
                2365769.6995441895,
                0.899165893688581
              ],
              [
                -105069.74276269233,
                2365769.6995441895,
                1.519165893688581
              ],
              [
                -105069.74276269233,
                2365321.9595441893,
                1.519165893688581
              ],
              [
                -105438.74276269233,
                2365321.9595441893,
                0.899165893688581
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:26:58+00:00",
        "end_time": "2018-09-08T04:03:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1877.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1877.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1877.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1877.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8700522,
            71.26455656,
            0.8991658937,
            -156.859496,
            71.26881161,
            1.519165894
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.86952593919594,
                  71.26455656207969,
                  0.899165893688581
                ],
                [
                  -156.87005221682998,
                  71.26866542509244,
                  0.899165893688581
                ],
                [
                  -156.8600204391212,
                  71.2688116054391,
                  1.519165893688581
                ],
                [
                  -156.85949599644297,
                  71.26470271160369,
                  1.519165893688581
                ],
                [
                  -156.86952593919594,
                  71.26455656207969,
                  0.899165893688581
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1877.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1877.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:26:58Z",
            "pc:count": 700720,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105201.2703,
                "count": 700720,
                "maximum": -105069.7428,
                "minimum": -105438.7428,
                "name": "X",
                "position": 0,
                "stddev": 84.34642129,
                "variance": 7114.318785
              },
              {
                "average": 2365498.821,
                "count": 700720,
                "maximum": 2365769.7,
                "minimum": 2365321.96,
                "name": "Y",
                "position": 1,
                "stddev": 115.2722473,
                "variance": 13287.691
              },
              {
                "average": 1.181720323,
                "count": 700720,
                "maximum": 1.519165894,
                "minimum": 0.8991658937,
                "name": "Z",
                "position": 2,
                "stddev": 0.06841990605,
                "variance": 0.004681283545
              },
              {
                "average": 16342.30487,
                "count": 700720,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12417.23,
                "variance": 154187601
              },
              {
                "average": 1,
                "count": 700720,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 700720,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5038645964,
                "count": 700720,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999854214,
                "variance": 0.2499854216
              },
              {
                "average": 0.0005294554173,
                "count": 700720,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0230038225,
                "variance": 0.0005291758494
              },
              {
                "average": 7.641674278,
                "count": 700720,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.522116972,
                "variance": 6.361074022
              },
              {
                "average": -0.875301119,
                "count": 700720,
                "maximum": 16.33200073,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.640173789,
                "variance": 58.37225553
              },
              {
                "average": 0.4861000114,
                "count": 700720,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998071096,
                "variance": 0.2498071468
              },
              {
                "average": 406.0639813,
                "count": 700720,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.653628713,
                "variance": 0.4272304945
              },
              {
                "average": 220415056.5,
                "count": 700720,
                "maximum": 220416018.6,
                "minimum": 220414626.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 411.7983007,
                "variance": 169577.8405
              },
              {
                "average": 0.4861000114,
                "count": 700720,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998071096,
                "variance": 0.2498071468
              },
              {
                "average": 0,
                "count": 700720,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 700720,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 700720,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05465235758,
                "count": 700720,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2273005744,
                "variance": 0.05166555112
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105438.7428,
              2365321.96,
              0.8991658937,
              -105069.7428,
              2365769.7,
              1.519165894
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105438.74276269233,
                    2365321.9595441893,
                    0.899165893688581
                  ],
                  [
                    -105438.74276269233,
                    2365769.6995441895,
                    0.899165893688581
                  ],
                  [
                    -105069.74276269233,
                    2365769.6995441895,
                    1.519165893688581
                  ],
                  [
                    -105069.74276269233,
                    2365321.9595441893,
                    1.519165893688581
                  ],
                  [
                    -105438.74276269233,
                    2365321.9595441893,
                    0.899165893688581
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:26:58+00:00",
            "end_time": "2018-09-08T04:03:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2109.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8192087092456,
              71.28879564405135,
              0.852313750218844
            ],
            [
              -156.81973168893296,
              71.29294790091006,
              0.852313750218844
            ],
            [
              -156.80752060602845,
              71.29312247995028,
              35.192313750218844
            ],
            [
              -156.80699988573855,
              71.2889701858401,
              35.192313750218844
            ],
            [
              -156.8192087092456,
              71.28879564405135,
              0.852313750218844
            ]
          ]
        ]
      },
      "bbox": [
        -156.8197317,
        71.28879564,
        0.8523137502,
        -156.8069999,
        71.29312248,
        35.19231375
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:08Z",
        "pc:count": 1089971,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103203.887,
            "count": 1089971,
            "maximum": -103030.3513,
            "minimum": -103479.0113,
            "name": "X",
            "position": 0,
            "stddev": 103.9112577,
            "variance": 10797.54947
          },
          {
            "average": 2368064.744,
            "count": 1089971,
            "maximum": 2368331.447,
            "minimum": 2367879.067,
            "name": "Y",
            "position": 1,
            "stddev": 118.0654753,
            "variance": 13939.45645
          },
          {
            "average": 1.168262422,
            "count": 1089971,
            "maximum": 35.19231375,
            "minimum": 0.8523137502,
            "name": "Z",
            "position": 2,
            "stddev": 0.1053828402,
            "variance": 0.01110554302
          },
          {
            "average": 14035.28267,
            "count": 1089971,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10516.09859,
            "variance": 110588329.5
          },
          {
            "average": 1.000006422,
            "count": 1089971,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002534196887,
            "variance": 6.422153862e-06
          },
          {
            "average": 1.000012844,
            "count": 1089971,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003583884099,
            "variance": 1.284422523e-05
          },
          {
            "average": 0.5034133936,
            "count": 1089971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499988578,
            "variance": 0.2499885781
          },
          {
            "average": 0.0004981783919,
            "count": 1089971,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02231436011,
            "variance": 0.000497930667
          },
          {
            "average": 7.359090288,
            "count": 1089971,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.809528607,
            "variance": 7.893450994
          },
          {
            "average": -0.6198402165,
            "count": 1089971,
            "maximum": 16.48200035,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.110341632,
            "variance": 65.7776414
          },
          {
            "average": 0.4895442172,
            "count": 1089971,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499890894,
            "variance": 0.2498909059
          },
          {
            "average": 404.0602126,
            "count": 1089971,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6907133388,
            "variance": 0.4770849164
          },
          {
            "average": 220413945.4,
            "count": 1089971,
            "maximum": 220414948.1,
            "minimum": 220413461.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 403.976675,
            "variance": 163197.1539
          },
          {
            "average": 0.4895442172,
            "count": 1089971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499890894,
            "variance": 0.2498909059
          },
          {
            "average": 0,
            "count": 1089971,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1089971,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1089971,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07056151035,
            "count": 1089971,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2560910849,
            "variance": 0.06558264378
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103479.0113,
          2367879.067,
          0.8523137502,
          -103030.3513,
          2368331.447,
          35.19231375
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103479.01132176495,
                2367879.067104361,
                0.852313750218844
              ],
              [
                -103479.01132176495,
                2368331.447104361,
                0.852313750218844
              ],
              [
                -103030.35132176495,
                2368331.447104361,
                35.192313750218844
              ],
              [
                -103030.35132176495,
                2367879.067104361,
                35.192313750218844
              ],
              [
                -103479.01132176495,
                2367879.067104361,
                0.852313750218844
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:08+00:00",
        "end_time": "2018-09-08T03:44:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2109.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2109.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2109.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2109.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8197317,
            71.28879564,
            0.8523137502,
            -156.8069999,
            71.29312248,
            35.19231375
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8192087092456,
                  71.28879564405135,
                  0.852313750218844
                ],
                [
                  -156.81973168893296,
                  71.29294790091006,
                  0.852313750218844
                ],
                [
                  -156.80752060602845,
                  71.29312247995028,
                  35.192313750218844
                ],
                [
                  -156.80699988573855,
                  71.2889701858401,
                  35.192313750218844
                ],
                [
                  -156.8192087092456,
                  71.28879564405135,
                  0.852313750218844
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2109.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2109.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:08Z",
            "pc:count": 1089971,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103203.887,
                "count": 1089971,
                "maximum": -103030.3513,
                "minimum": -103479.0113,
                "name": "X",
                "position": 0,
                "stddev": 103.9112577,
                "variance": 10797.54947
              },
              {
                "average": 2368064.744,
                "count": 1089971,
                "maximum": 2368331.447,
                "minimum": 2367879.067,
                "name": "Y",
                "position": 1,
                "stddev": 118.0654753,
                "variance": 13939.45645
              },
              {
                "average": 1.168262422,
                "count": 1089971,
                "maximum": 35.19231375,
                "minimum": 0.8523137502,
                "name": "Z",
                "position": 2,
                "stddev": 0.1053828402,
                "variance": 0.01110554302
              },
              {
                "average": 14035.28267,
                "count": 1089971,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10516.09859,
                "variance": 110588329.5
              },
              {
                "average": 1.000006422,
                "count": 1089971,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002534196887,
                "variance": 6.422153862e-06
              },
              {
                "average": 1.000012844,
                "count": 1089971,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003583884099,
                "variance": 1.284422523e-05
              },
              {
                "average": 0.5034133936,
                "count": 1089971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499988578,
                "variance": 0.2499885781
              },
              {
                "average": 0.0004981783919,
                "count": 1089971,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02231436011,
                "variance": 0.000497930667
              },
              {
                "average": 7.359090288,
                "count": 1089971,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.809528607,
                "variance": 7.893450994
              },
              {
                "average": -0.6198402165,
                "count": 1089971,
                "maximum": 16.48200035,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.110341632,
                "variance": 65.7776414
              },
              {
                "average": 0.4895442172,
                "count": 1089971,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499890894,
                "variance": 0.2498909059
              },
              {
                "average": 404.0602126,
                "count": 1089971,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6907133388,
                "variance": 0.4770849164
              },
              {
                "average": 220413945.4,
                "count": 1089971,
                "maximum": 220414948.1,
                "minimum": 220413461.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 403.976675,
                "variance": 163197.1539
              },
              {
                "average": 0.4895442172,
                "count": 1089971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499890894,
                "variance": 0.2498909059
              },
              {
                "average": 0,
                "count": 1089971,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1089971,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1089971,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07056151035,
                "count": 1089971,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2560910849,
                "variance": 0.06558264378
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103479.0113,
              2367879.067,
              0.8523137502,
              -103030.3513,
              2368331.447,
              35.19231375
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103479.01132176495,
                    2367879.067104361,
                    0.852313750218844
                  ],
                  [
                    -103479.01132176495,
                    2368331.447104361,
                    0.852313750218844
                  ],
                  [
                    -103030.35132176495,
                    2368331.447104361,
                    35.192313750218844
                  ],
                  [
                    -103030.35132176495,
                    2367879.067104361,
                    35.192313750218844
                  ],
                  [
                    -103479.01132176495,
                    2367879.067104361,
                    0.852313750218844
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:08+00:00",
            "end_time": "2018-09-08T03:44:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1614.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.87415507107485,
              71.24402017386477,
              7.262883523223024
            ],
            [
              -156.87471227896344,
              71.24836684436778,
              7.262883523223024
            ],
            [
              -156.8612525344406,
              71.24856332889333,
              571.7228835232231
            ],
            [
              -156.86069792899204,
              71.24421661461474,
              571.7228835232231
            ],
            [
              -156.87415507107485,
              71.24402017386477,
              7.262883523223024
            ]
          ]
        ]
      },
      "bbox": [
        -156.8747123,
        71.24402017,
        7.262883523,
        -156.8606979,
        71.24856333,
        571.7228835
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:34Z",
        "pc:count": 3846226,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105462.7451,
            "count": 3846226,
            "maximum": -105209.9279,
            "minimum": -105705.4679,
            "name": "X",
            "position": 0,
            "stddev": 135.3672696,
            "variance": 18324.29767
          },
          {
            "average": 2363326.199,
            "count": 3846226,
            "maximum": 2363569.197,
            "minimum": 2363095.477,
            "name": "Y",
            "position": 1,
            "stddev": 129.3272922,
            "variance": 16725.54851
          },
          {
            "average": 11.40954267,
            "count": 3846226,
            "maximum": 571.7228835,
            "minimum": 7.262883523,
            "name": "Z",
            "position": 2,
            "stddev": 0.7002763384,
            "variance": 0.4903869501
          },
          {
            "average": 47253.57091,
            "count": 3846226,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8666.299333,
            "variance": 75104744.12
          },
          {
            "average": 1,
            "count": 3846226,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.00000026,
            "count": 3846226,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0005098971685,
            "variance": 2.599951225e-07
          },
          {
            "average": 0.5036139322,
            "count": 3846226,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999870043,
            "variance": 0.2499870045
          },
          {
            "average": 0.0003907726691,
            "count": 3846226,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01976411059,
            "variance": 0.0003906200674
          },
          {
            "average": 1.274809905,
            "count": 3846226,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4473098456,
            "variance": 0.200086098
          },
          {
            "average": 0.5876811553,
            "count": 3846226,
            "maximum": 20.62199974,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32183237,
            "variance": 106.5402234
          },
          {
            "average": 0.5333352746,
            "count": 3846226,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988875867,
            "variance": 0.2488888242
          },
          {
            "average": 418.9853157,
            "count": 3846226,
            "maximum": 466,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.04332778,
            "variance": 401.7349884
          },
          {
            "average": 220466491.6,
            "count": 3846226,
            "maximum": 220726494.3,
            "minimum": 220416929.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 112827.1104,
            "variance": 12729956840.0
          },
          {
            "average": 0.5333352746,
            "count": 3846226,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988875867,
            "variance": 0.2488888242
          },
          {
            "average": 0,
            "count": 3846226,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3846226,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3846226,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2280295022,
            "count": 3846226,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4195617882,
            "variance": 0.1760320941
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105705.4679,
          2363095.477,
          7.262883523,
          -105209.9279,
          2363569.197,
          571.7228835
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105705.46793043829,
                2363095.476641976,
                7.262883523223024
              ],
              [
                -105705.46793043829,
                2363569.1966419755,
                7.262883523223024
              ],
              [
                -105209.92793043828,
                2363569.1966419755,
                571.7228835232231
              ],
              [
                -105209.92793043828,
                2363095.476641976,
                571.7228835232231
              ],
              [
                -105705.46793043829,
                2363095.476641976,
                7.262883523223024
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:34+00:00",
        "end_time": "2018-09-08T04:42:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1614.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1614.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1614.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1614.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8747123,
            71.24402017,
            7.262883523,
            -156.8606979,
            71.24856333,
            571.7228835
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.87415507107485,
                  71.24402017386477,
                  7.262883523223024
                ],
                [
                  -156.87471227896344,
                  71.24836684436778,
                  7.262883523223024
                ],
                [
                  -156.8612525344406,
                  71.24856332889333,
                  571.7228835232231
                ],
                [
                  -156.86069792899204,
                  71.24421661461474,
                  571.7228835232231
                ],
                [
                  -156.87415507107485,
                  71.24402017386477,
                  7.262883523223024
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1614.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1614.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:34Z",
            "pc:count": 3846226,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105462.7451,
                "count": 3846226,
                "maximum": -105209.9279,
                "minimum": -105705.4679,
                "name": "X",
                "position": 0,
                "stddev": 135.3672696,
                "variance": 18324.29767
              },
              {
                "average": 2363326.199,
                "count": 3846226,
                "maximum": 2363569.197,
                "minimum": 2363095.477,
                "name": "Y",
                "position": 1,
                "stddev": 129.3272922,
                "variance": 16725.54851
              },
              {
                "average": 11.40954267,
                "count": 3846226,
                "maximum": 571.7228835,
                "minimum": 7.262883523,
                "name": "Z",
                "position": 2,
                "stddev": 0.7002763384,
                "variance": 0.4903869501
              },
              {
                "average": 47253.57091,
                "count": 3846226,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8666.299333,
                "variance": 75104744.12
              },
              {
                "average": 1,
                "count": 3846226,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.00000026,
                "count": 3846226,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0005098971685,
                "variance": 2.599951225e-07
              },
              {
                "average": 0.5036139322,
                "count": 3846226,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999870043,
                "variance": 0.2499870045
              },
              {
                "average": 0.0003907726691,
                "count": 3846226,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01976411059,
                "variance": 0.0003906200674
              },
              {
                "average": 1.274809905,
                "count": 3846226,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4473098456,
                "variance": 0.200086098
              },
              {
                "average": 0.5876811553,
                "count": 3846226,
                "maximum": 20.62199974,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32183237,
                "variance": 106.5402234
              },
              {
                "average": 0.5333352746,
                "count": 3846226,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988875867,
                "variance": 0.2488888242
              },
              {
                "average": 418.9853157,
                "count": 3846226,
                "maximum": 466,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.04332778,
                "variance": 401.7349884
              },
              {
                "average": 220466491.6,
                "count": 3846226,
                "maximum": 220726494.3,
                "minimum": 220416929.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 112827.1104,
                "variance": 12729956840.0
              },
              {
                "average": 0.5333352746,
                "count": 3846226,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988875867,
                "variance": 0.2488888242
              },
              {
                "average": 0,
                "count": 3846226,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3846226,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3846226,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2280295022,
                "count": 3846226,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4195617882,
                "variance": 0.1760320941
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105705.4679,
              2363095.477,
              7.262883523,
              -105209.9279,
              2363569.197,
              571.7228835
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105705.46793043829,
                    2363095.476641976,
                    7.262883523223024
                  ],
                  [
                    -105705.46793043829,
                    2363569.1966419755,
                    7.262883523223024
                  ],
                  [
                    -105209.92793043828,
                    2363569.1966419755,
                    571.7228835232231
                  ],
                  [
                    -105209.92793043828,
                    2363095.476641976,
                    571.7228835232231
                  ],
                  [
                    -105705.46793043829,
                    2363095.476641976,
                    7.262883523223024
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:34+00:00",
            "end_time": "2018-09-08T04:42:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1878.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8602199866752,
              71.26442924858671,
              0.890427356085779
            ],
            [
              -156.86077497610287,
              71.2687763698136,
              0.890427356085779
            ],
            [
              -156.84730611747256,
              71.26897187919018,
              10.25042735608578
            ],
            [
              -156.84675373457858,
              71.26462471434918,
              10.25042735608578
            ],
            [
              -156.8602199866752,
              71.26442924858671,
              0.890427356085779
            ]
          ]
        ]
      },
      "bbox": [
        -156.860775,
        71.26442925,
        0.8904273561,
        -156.8467537,
        71.26897188,
        10.25042736
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:07Z",
        "pc:count": 2010167,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104830.668,
            "count": 2010167,
            "maximum": -104602.1905,
            "minimum": -105097.6105,
            "name": "X",
            "position": 0,
            "stddev": 136.9923155,
            "variance": 18766.89449
          },
          {
            "average": 2365518.885,
            "count": 2010167,
            "maximum": 2365767.061,
            "minimum": 2365293.361,
            "name": "Y",
            "position": 1,
            "stddev": 129.4826031,
            "variance": 16765.7445
          },
          {
            "average": 2.229888804,
            "count": 2010167,
            "maximum": 10.25042736,
            "minimum": 0.8904273561,
            "name": "Z",
            "position": 2,
            "stddev": 2.283728868,
            "variance": 5.215417543
          },
          {
            "average": 19979.53556,
            "count": 2010167,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13927.61038,
            "variance": 193978330.8
          },
          {
            "average": 1.000002487,
            "count": 2010167,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001577133659,
            "variance": 2.487350579e-06
          },
          {
            "average": 1.000004975,
            "count": 2010167,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002230401036,
            "variance": 4.974688783e-06
          },
          {
            "average": 0.5080513211,
            "count": 2010167,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999352964,
            "variance": 0.2499353006
          },
          {
            "average": 0.0005705993582,
            "count": 2010167,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0238804116,
            "variance": 0.0005702740582
          },
          {
            "average": 6.062686831,
            "count": 2010167,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.521403025,
            "variance": 12.40027927
          },
          {
            "average": -3.045493928,
            "count": 2010167,
            "maximum": 16.42200089,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.614535183,
            "variance": 57.98114605
          },
          {
            "average": 0.4880853183,
            "count": 2010167,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998581445,
            "variance": 0.2498581647
          },
          {
            "average": 406.6154016,
            "count": 2010167,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7156642075,
            "variance": 0.5121752578
          },
          {
            "average": 220415380.5,
            "count": 2010167,
            "maximum": 220416027.6,
            "minimum": 220414620.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 470.9677537,
            "variance": 221810.625
          },
          {
            "average": 0.4880853183,
            "count": 2010167,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998581445,
            "variance": 0.2498581647
          },
          {
            "average": 0,
            "count": 2010167,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2010167,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2010167,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09299675102,
            "count": 2010167,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2904279554,
            "variance": 0.08434839728
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105097.6105,
          2365293.361,
          0.8904273561,
          -104602.1905,
          2365767.061,
          10.25042736
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105097.61054123503,
                2365293.361060754,
                0.890427356085779
              ],
              [
                -105097.61054123503,
                2365767.061060754,
                0.890427356085779
              ],
              [
                -104602.19054123502,
                2365767.061060754,
                10.25042735608578
              ],
              [
                -104602.19054123502,
                2365293.361060754,
                10.25042735608578
              ],
              [
                -105097.61054123503,
                2365293.361060754,
                0.890427356085779
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:07+00:00",
        "end_time": "2018-09-08T04:03:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1878.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1878.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1878.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1878.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.860775,
            71.26442925,
            0.8904273561,
            -156.8467537,
            71.26897188,
            10.25042736
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8602199866752,
                  71.26442924858671,
                  0.890427356085779
                ],
                [
                  -156.86077497610287,
                  71.2687763698136,
                  0.890427356085779
                ],
                [
                  -156.84730611747256,
                  71.26897187919018,
                  10.25042735608578
                ],
                [
                  -156.84675373457858,
                  71.26462471434918,
                  10.25042735608578
                ],
                [
                  -156.8602199866752,
                  71.26442924858671,
                  0.890427356085779
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1878.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1878.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:07Z",
            "pc:count": 2010167,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104830.668,
                "count": 2010167,
                "maximum": -104602.1905,
                "minimum": -105097.6105,
                "name": "X",
                "position": 0,
                "stddev": 136.9923155,
                "variance": 18766.89449
              },
              {
                "average": 2365518.885,
                "count": 2010167,
                "maximum": 2365767.061,
                "minimum": 2365293.361,
                "name": "Y",
                "position": 1,
                "stddev": 129.4826031,
                "variance": 16765.7445
              },
              {
                "average": 2.229888804,
                "count": 2010167,
                "maximum": 10.25042736,
                "minimum": 0.8904273561,
                "name": "Z",
                "position": 2,
                "stddev": 2.283728868,
                "variance": 5.215417543
              },
              {
                "average": 19979.53556,
                "count": 2010167,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13927.61038,
                "variance": 193978330.8
              },
              {
                "average": 1.000002487,
                "count": 2010167,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001577133659,
                "variance": 2.487350579e-06
              },
              {
                "average": 1.000004975,
                "count": 2010167,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002230401036,
                "variance": 4.974688783e-06
              },
              {
                "average": 0.5080513211,
                "count": 2010167,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999352964,
                "variance": 0.2499353006
              },
              {
                "average": 0.0005705993582,
                "count": 2010167,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0238804116,
                "variance": 0.0005702740582
              },
              {
                "average": 6.062686831,
                "count": 2010167,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.521403025,
                "variance": 12.40027927
              },
              {
                "average": -3.045493928,
                "count": 2010167,
                "maximum": 16.42200089,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.614535183,
                "variance": 57.98114605
              },
              {
                "average": 0.4880853183,
                "count": 2010167,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998581445,
                "variance": 0.2498581647
              },
              {
                "average": 406.6154016,
                "count": 2010167,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7156642075,
                "variance": 0.5121752578
              },
              {
                "average": 220415380.5,
                "count": 2010167,
                "maximum": 220416027.6,
                "minimum": 220414620.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 470.9677537,
                "variance": 221810.625
              },
              {
                "average": 0.4880853183,
                "count": 2010167,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998581445,
                "variance": 0.2498581647
              },
              {
                "average": 0,
                "count": 2010167,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2010167,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2010167,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09299675102,
                "count": 2010167,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2904279554,
                "variance": 0.08434839728
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105097.6105,
              2365293.361,
              0.8904273561,
              -104602.1905,
              2365767.061,
              10.25042736
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105097.61054123503,
                    2365293.361060754,
                    0.890427356085779
                  ],
                  [
                    -105097.61054123503,
                    2365767.061060754,
                    0.890427356085779
                  ],
                  [
                    -104602.19054123502,
                    2365767.061060754,
                    10.25042735608578
                  ],
                  [
                    -104602.19054123502,
                    2365293.361060754,
                    10.25042735608578
                  ],
                  [
                    -105097.61054123503,
                    2365293.361060754,
                    0.890427356085779
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:07+00:00",
            "end_time": "2018-09-08T04:03:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2053.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.706175277926,
              71.27982786441892,
              5.511848102635068
            ],
            [
              -156.70670075489716,
              71.28417585900345,
              5.511848102635068
            ],
            [
              -156.6932099054143,
              71.28436099509861,
              10.091848102635069
            ],
            [
              -156.6926870417887,
              71.28001295916906,
              10.091848102635069
            ],
            [
              -156.706175277926,
              71.27982786441892,
              5.511848102635068
            ]
          ]
        ]
      },
      "bbox": [
        -156.7067008,
        71.27982786,
        5.511848103,
        -156.692687,
        71.284361,
        10.0918481
      ],
      "properties": {
        "datetime": "2018-09-08T05:35:06Z",
        "pc:count": 2887796,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99129.07535,
            "count": 2887796,
            "maximum": -98876.39303,
            "minimum": -99372.23303,
            "name": "X",
            "position": 0,
            "stddev": 135.0516547,
            "variance": 18238.94944
          },
          {
            "average": 2366969.597,
            "count": 2887796,
            "maximum": 2367204.798,
            "minimum": 2366731.098,
            "name": "Y",
            "position": 1,
            "stddev": 131.3359007,
            "variance": 17249.1188
          },
          {
            "average": 7.152366418,
            "count": 2887796,
            "maximum": 10.0918481,
            "minimum": 5.511848103,
            "name": "Z",
            "position": 2,
            "stddev": 1.085416554,
            "variance": 1.178129096
          },
          {
            "average": 38876.8444,
            "count": 2887796,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13386.59977,
            "variance": 179201053.5
          },
          {
            "average": 1,
            "count": 2887796,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2887796,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4999085808,
            "count": 2887796,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000782,
            "variance": 0.2500000782
          },
          {
            "average": 0.0004508628726,
            "count": 2887796,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02122874823,
            "variance": 0.0004506597513
          },
          {
            "average": 1.428545507,
            "count": 2887796,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.065538535,
            "variance": 1.135372369
          },
          {
            "average": -1.050774863,
            "count": 2887796,
            "maximum": 16.31399918,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21817296,
            "variance": 104.4110587
          },
          {
            "average": 0.4566080845,
            "count": 2887796,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981136693,
            "variance": 0.2481172276
          },
          {
            "average": 413.3283816,
            "count": 2887796,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9659103506,
            "variance": 0.9329828054
          },
          {
            "average": 220419139.4,
            "count": 2887796,
            "maximum": 220420106.1,
            "minimum": 220418354.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 537.174447,
            "variance": 288556.3865
          },
          {
            "average": 0.4566080845,
            "count": 2887796,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981136693,
            "variance": 0.2481172276
          },
          {
            "average": 0,
            "count": 2887796,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2887796,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2887796,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2199448992,
            "count": 2887796,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4142091258,
            "variance": 0.1715691999
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99372.23303,
          2366731.098,
          5.511848103,
          -98876.39303,
          2367204.798,
          10.0918481
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99372.2330269852,
                2366731.097769596,
                5.511848102635068
              ],
              [
                -99372.2330269852,
                2367204.7977695963,
                5.511848102635068
              ],
              [
                -98876.3930269852,
                2367204.7977695963,
                10.091848102635069
              ],
              [
                -98876.3930269852,
                2366731.097769596,
                10.091848102635069
              ],
              [
                -99372.2330269852,
                2366731.097769596,
                5.511848102635068
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:35:06+00:00",
        "end_time": "2018-09-08T05:05:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2053.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2053.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2053.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2053.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7067008,
            71.27982786,
            5.511848103,
            -156.692687,
            71.284361,
            10.0918481
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.706175277926,
                  71.27982786441892,
                  5.511848102635068
                ],
                [
                  -156.70670075489716,
                  71.28417585900345,
                  5.511848102635068
                ],
                [
                  -156.6932099054143,
                  71.28436099509861,
                  10.091848102635069
                ],
                [
                  -156.6926870417887,
                  71.28001295916906,
                  10.091848102635069
                ],
                [
                  -156.706175277926,
                  71.27982786441892,
                  5.511848102635068
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2053.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2053.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:35:06Z",
            "pc:count": 2887796,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99129.07535,
                "count": 2887796,
                "maximum": -98876.39303,
                "minimum": -99372.23303,
                "name": "X",
                "position": 0,
                "stddev": 135.0516547,
                "variance": 18238.94944
              },
              {
                "average": 2366969.597,
                "count": 2887796,
                "maximum": 2367204.798,
                "minimum": 2366731.098,
                "name": "Y",
                "position": 1,
                "stddev": 131.3359007,
                "variance": 17249.1188
              },
              {
                "average": 7.152366418,
                "count": 2887796,
                "maximum": 10.0918481,
                "minimum": 5.511848103,
                "name": "Z",
                "position": 2,
                "stddev": 1.085416554,
                "variance": 1.178129096
              },
              {
                "average": 38876.8444,
                "count": 2887796,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13386.59977,
                "variance": 179201053.5
              },
              {
                "average": 1,
                "count": 2887796,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2887796,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4999085808,
                "count": 2887796,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000782,
                "variance": 0.2500000782
              },
              {
                "average": 0.0004508628726,
                "count": 2887796,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02122874823,
                "variance": 0.0004506597513
              },
              {
                "average": 1.428545507,
                "count": 2887796,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.065538535,
                "variance": 1.135372369
              },
              {
                "average": -1.050774863,
                "count": 2887796,
                "maximum": 16.31399918,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21817296,
                "variance": 104.4110587
              },
              {
                "average": 0.4566080845,
                "count": 2887796,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981136693,
                "variance": 0.2481172276
              },
              {
                "average": 413.3283816,
                "count": 2887796,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9659103506,
                "variance": 0.9329828054
              },
              {
                "average": 220419139.4,
                "count": 2887796,
                "maximum": 220420106.1,
                "minimum": 220418354.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 537.174447,
                "variance": 288556.3865
              },
              {
                "average": 0.4566080845,
                "count": 2887796,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981136693,
                "variance": 0.2481172276
              },
              {
                "average": 0,
                "count": 2887796,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2887796,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2887796,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2199448992,
                "count": 2887796,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4142091258,
                "variance": 0.1715691999
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99372.23303,
              2366731.098,
              5.511848103,
              -98876.39303,
              2367204.798,
              10.0918481
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99372.2330269852,
                    2366731.097769596,
                    5.511848102635068
                  ],
                  [
                    -99372.2330269852,
                    2367204.7977695963,
                    5.511848102635068
                  ],
                  [
                    -98876.3930269852,
                    2367204.7977695963,
                    10.091848102635069
                  ],
                  [
                    -98876.3930269852,
                    2366731.097769596,
                    10.091848102635069
                  ],
                  [
                    -99372.2330269852,
                    2366731.097769596,
                    5.511848102635068
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:35:06+00:00",
            "end_time": "2018-09-08T05:05:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1778.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82247521270264,
              71.2559997070723,
              1.954256576188811
            ],
            [
              -156.8230226536888,
              71.26034650458152,
              1.954256576188811
            ],
            [
              -156.80955309645665,
              71.26053949631658,
              28.874256576188813
            ],
            [
              -156.80900826123977,
              71.25619265577905,
              28.874256576188813
            ],
            [
              -156.82247521270264,
              71.2559997070723,
              1.954256576188811
            ]
          ]
        ]
      },
      "bbox": [
        -156.8230227,
        71.25599971,
        1.954256576,
        -156.8090083,
        71.2605395,
        28.87425658
      ],
      "properties": {
        "datetime": "2018-09-08T05:18:38Z",
        "pc:count": 2808727,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103486.9826,
            "count": 2808727,
            "maximum": -103254.9075,
            "minimum": -103750.5275,
            "name": "X",
            "position": 0,
            "stddev": 137.2867521,
            "variance": 18847.6523
          },
          {
            "average": 2364550.422,
            "count": 2808727,
            "maximum": 2364790.788,
            "minimum": 2364317.108,
            "name": "Y",
            "position": 1,
            "stddev": 126.4756595,
            "variance": 15996.09245
          },
          {
            "average": 7.78165042,
            "count": 2808727,
            "maximum": 28.87425658,
            "minimum": 1.954256576,
            "name": "Z",
            "position": 2,
            "stddev": 2.446132532,
            "variance": 5.983564366
          },
          {
            "average": 45277.44616,
            "count": 2808727,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8846.451317,
            "variance": 78259700.91
          },
          {
            "average": 1.00002243,
            "count": 2808727,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004735989347,
            "variance": 2.242959509e-05
          },
          {
            "average": 1.00004486,
            "count": 2808727,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006697625248,
            "variance": 4.485818397e-05
          },
          {
            "average": 0.5014410443,
            "count": 2808727,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999980124,
            "variance": 0.2499980124
          },
          {
            "average": 0.0004051657566,
            "count": 2808727,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02012465507,
            "variance": 0.0004050017415
          },
          {
            "average": 1.346488285,
            "count": 2808727,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8803576408,
            "variance": 0.7750295756
          },
          {
            "average": -0.5213796217,
            "count": 2808727,
            "maximum": 16.49399948,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.46613772,
            "variance": 109.5400388
          },
          {
            "average": 0.4879513032,
            "count": 2808727,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998548968,
            "variance": 0.2498549179
          },
          {
            "average": 411.0128279,
            "count": 2808727,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9360704048,
            "variance": 0.8762278028
          },
          {
            "average": 220417835.9,
            "count": 2808727,
            "maximum": 220419118,
            "minimum": 220416892.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 549.686771,
            "variance": 302155.5462
          },
          {
            "average": 0.4879513032,
            "count": 2808727,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998548968,
            "variance": 0.2498549179
          },
          {
            "average": 0,
            "count": 2808727,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2808727,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2808727,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2180258174,
            "count": 2808727,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4129050993,
            "variance": 0.170490621
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103750.5275,
          2364317.108,
          1.954256576,
          -103254.9075,
          2364790.788,
          28.87425658
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103750.52745541738,
                2364317.1080482933,
                1.954256576188811
              ],
              [
                -103750.52745541738,
                2364790.788048293,
                1.954256576188811
              ],
              [
                -103254.90745541739,
                2364790.788048293,
                28.874256576188813
              ],
              [
                -103254.90745541739,
                2364317.1080482933,
                28.874256576188813
              ],
              [
                -103750.52745541738,
                2364317.1080482933,
                1.954256576188811
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:18:38+00:00",
        "end_time": "2018-09-08T04:41:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1778.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1778.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1778.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1778.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8230227,
            71.25599971,
            1.954256576,
            -156.8090083,
            71.2605395,
            28.87425658
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82247521270264,
                  71.2559997070723,
                  1.954256576188811
                ],
                [
                  -156.8230226536888,
                  71.26034650458152,
                  1.954256576188811
                ],
                [
                  -156.80955309645665,
                  71.26053949631658,
                  28.874256576188813
                ],
                [
                  -156.80900826123977,
                  71.25619265577905,
                  28.874256576188813
                ],
                [
                  -156.82247521270264,
                  71.2559997070723,
                  1.954256576188811
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1778.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1778.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:18:38Z",
            "pc:count": 2808727,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103486.9826,
                "count": 2808727,
                "maximum": -103254.9075,
                "minimum": -103750.5275,
                "name": "X",
                "position": 0,
                "stddev": 137.2867521,
                "variance": 18847.6523
              },
              {
                "average": 2364550.422,
                "count": 2808727,
                "maximum": 2364790.788,
                "minimum": 2364317.108,
                "name": "Y",
                "position": 1,
                "stddev": 126.4756595,
                "variance": 15996.09245
              },
              {
                "average": 7.78165042,
                "count": 2808727,
                "maximum": 28.87425658,
                "minimum": 1.954256576,
                "name": "Z",
                "position": 2,
                "stddev": 2.446132532,
                "variance": 5.983564366
              },
              {
                "average": 45277.44616,
                "count": 2808727,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8846.451317,
                "variance": 78259700.91
              },
              {
                "average": 1.00002243,
                "count": 2808727,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004735989347,
                "variance": 2.242959509e-05
              },
              {
                "average": 1.00004486,
                "count": 2808727,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006697625248,
                "variance": 4.485818397e-05
              },
              {
                "average": 0.5014410443,
                "count": 2808727,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999980124,
                "variance": 0.2499980124
              },
              {
                "average": 0.0004051657566,
                "count": 2808727,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02012465507,
                "variance": 0.0004050017415
              },
              {
                "average": 1.346488285,
                "count": 2808727,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8803576408,
                "variance": 0.7750295756
              },
              {
                "average": -0.5213796217,
                "count": 2808727,
                "maximum": 16.49399948,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.46613772,
                "variance": 109.5400388
              },
              {
                "average": 0.4879513032,
                "count": 2808727,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998548968,
                "variance": 0.2498549179
              },
              {
                "average": 411.0128279,
                "count": 2808727,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9360704048,
                "variance": 0.8762278028
              },
              {
                "average": 220417835.9,
                "count": 2808727,
                "maximum": 220419118,
                "minimum": 220416892.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 549.686771,
                "variance": 302155.5462
              },
              {
                "average": 0.4879513032,
                "count": 2808727,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998548968,
                "variance": 0.2498549179
              },
              {
                "average": 0,
                "count": 2808727,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2808727,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2808727,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2180258174,
                "count": 2808727,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4129050993,
                "variance": 0.170490621
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103750.5275,
              2364317.108,
              1.954256576,
              -103254.9075,
              2364790.788,
              28.87425658
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103750.52745541738,
                    2364317.1080482933,
                    1.954256576188811
                  ],
                  [
                    -103750.52745541738,
                    2364790.788048293,
                    1.954256576188811
                  ],
                  [
                    -103254.90745541739,
                    2364790.788048293,
                    28.874256576188813
                  ],
                  [
                    -103254.90745541739,
                    2364317.1080482933,
                    28.874256576188813
                  ],
                  [
                    -103750.52745541738,
                    2364317.1080482933,
                    1.954256576188811
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:18:38+00:00",
            "end_time": "2018-09-08T04:41:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2010.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8084797950658,
              71.27640448344793,
              -4.441462577353526
            ],
            [
              -156.8090250883202,
              71.28075246660772,
              -4.441462577353526
            ],
            [
              -156.79554042354548,
              71.28094456428241,
              27.978537422646475
            ],
            [
              -156.79499774175906,
              71.27659653823153,
              27.978537422646475
            ],
            [
              -156.8084797950658,
              71.27640448344793,
              -4.441462577353526
            ]
          ]
        ]
      },
      "bbox": [
        -156.8090251,
        71.27640448,
        -4.441462577,
        -156.7949977,
        71.28094456,
        27.97853742
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:07Z",
        "pc:count": 2839161,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102883.5349,
            "count": 2839161,
            "maximum": -102646.7469,
            "minimum": -103142.4669,
            "name": "X",
            "position": 0,
            "stddev": 130.4054695,
            "variance": 17005.58647
          },
          {
            "average": 2366757.516,
            "count": 2839161,
            "maximum": 2366988.477,
            "minimum": 2366514.737,
            "name": "Y",
            "position": 1,
            "stddev": 133.4436202,
            "variance": 17807.19978
          },
          {
            "average": 11.82481427,
            "count": 2839161,
            "maximum": 27.97853742,
            "minimum": -4.441462577,
            "name": "Z",
            "position": 2,
            "stddev": 3.542983388,
            "variance": 12.55273129
          },
          {
            "average": 32996.43228,
            "count": 2839161,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12047.21704,
            "variance": 145135438.4
          },
          {
            "average": 1.00507967,
            "count": 2839161,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07212838492,
            "variance": 0.005202503911
          },
          {
            "average": 1.010155113,
            "count": 2839161,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1024592431,
            "variance": 0.01049789649
          },
          {
            "average": 0.497976691,
            "count": 2839161,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999959943,
            "variance": 0.2499959943
          },
          {
            "average": 0.0004434408616,
            "count": 2839161,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02105336975,
            "variance": 0.0004432443779
          },
          {
            "average": 1.596191269,
            "count": 2839161,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.401448192,
            "variance": 1.964057036
          },
          {
            "average": 0.362025742,
            "count": 2839161,
            "maximum": 16.33200073,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.06097063,
            "variance": 101.2231299
          },
          {
            "average": 0.4500639449,
            "count": 2839161,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4975002287,
            "variance": 0.2475064776
          },
          {
            "average": 407.4438681,
            "count": 2839161,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9138211269,
            "variance": 0.8350690519
          },
          {
            "average": 220415850.1,
            "count": 2839161,
            "maximum": 220416867.6,
            "minimum": 220414929.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.6638696,
            "variance": 292317.4199
          },
          {
            "average": 0.4500639449,
            "count": 2839161,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4975002287,
            "variance": 0.2475064776
          },
          {
            "average": 0,
            "count": 2839161,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2839161,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2839161,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2182373596,
            "count": 2839161,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.413049482,
            "variance": 0.1706098745
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103142.4669,
          2366514.737,
          -4.441462577,
          -102646.7469,
          2366988.477,
          27.97853742
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103142.46693940292,
                2366514.736776863,
                -4.441462577353526
              ],
              [
                -103142.46693940292,
                2366988.4767768634,
                -4.441462577353526
              ],
              [
                -102646.74693940292,
                2366988.4767768634,
                27.978537422646475
              ],
              [
                -102646.74693940292,
                2366514.736776863,
                27.978537422646475
              ],
              [
                -103142.46693940292,
                2366514.736776863,
                -4.441462577353526
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:07+00:00",
        "end_time": "2018-09-08T04:08:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2010.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2010.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2010.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2010.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8090251,
            71.27640448,
            -4.441462577,
            -156.7949977,
            71.28094456,
            27.97853742
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8084797950658,
                  71.27640448344793,
                  -4.441462577353526
                ],
                [
                  -156.8090250883202,
                  71.28075246660772,
                  -4.441462577353526
                ],
                [
                  -156.79554042354548,
                  71.28094456428241,
                  27.978537422646475
                ],
                [
                  -156.79499774175906,
                  71.27659653823153,
                  27.978537422646475
                ],
                [
                  -156.8084797950658,
                  71.27640448344793,
                  -4.441462577353526
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2010.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2010.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:07Z",
            "pc:count": 2839161,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102883.5349,
                "count": 2839161,
                "maximum": -102646.7469,
                "minimum": -103142.4669,
                "name": "X",
                "position": 0,
                "stddev": 130.4054695,
                "variance": 17005.58647
              },
              {
                "average": 2366757.516,
                "count": 2839161,
                "maximum": 2366988.477,
                "minimum": 2366514.737,
                "name": "Y",
                "position": 1,
                "stddev": 133.4436202,
                "variance": 17807.19978
              },
              {
                "average": 11.82481427,
                "count": 2839161,
                "maximum": 27.97853742,
                "minimum": -4.441462577,
                "name": "Z",
                "position": 2,
                "stddev": 3.542983388,
                "variance": 12.55273129
              },
              {
                "average": 32996.43228,
                "count": 2839161,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12047.21704,
                "variance": 145135438.4
              },
              {
                "average": 1.00507967,
                "count": 2839161,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07212838492,
                "variance": 0.005202503911
              },
              {
                "average": 1.010155113,
                "count": 2839161,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1024592431,
                "variance": 0.01049789649
              },
              {
                "average": 0.497976691,
                "count": 2839161,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999959943,
                "variance": 0.2499959943
              },
              {
                "average": 0.0004434408616,
                "count": 2839161,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02105336975,
                "variance": 0.0004432443779
              },
              {
                "average": 1.596191269,
                "count": 2839161,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.401448192,
                "variance": 1.964057036
              },
              {
                "average": 0.362025742,
                "count": 2839161,
                "maximum": 16.33200073,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.06097063,
                "variance": 101.2231299
              },
              {
                "average": 0.4500639449,
                "count": 2839161,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4975002287,
                "variance": 0.2475064776
              },
              {
                "average": 407.4438681,
                "count": 2839161,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9138211269,
                "variance": 0.8350690519
              },
              {
                "average": 220415850.1,
                "count": 2839161,
                "maximum": 220416867.6,
                "minimum": 220414929.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.6638696,
                "variance": 292317.4199
              },
              {
                "average": 0.4500639449,
                "count": 2839161,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4975002287,
                "variance": 0.2475064776
              },
              {
                "average": 0,
                "count": 2839161,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2839161,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2839161,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2182373596,
                "count": 2839161,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.413049482,
                "variance": 0.1706098745
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103142.4669,
              2366514.737,
              -4.441462577,
              -102646.7469,
              2366988.477,
              27.97853742
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103142.46693940292,
                    2366514.736776863,
                    -4.441462577353526
                  ],
                  [
                    -103142.46693940292,
                    2366988.4767768634,
                    -4.441462577353526
                  ],
                  [
                    -102646.74693940292,
                    2366988.4767768634,
                    27.978537422646475
                  ],
                  [
                    -102646.74693940292,
                    2366514.736776863,
                    27.978537422646475
                  ],
                  [
                    -103142.46693940292,
                    2366514.736776863,
                    -4.441462577353526
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:07+00:00",
            "end_time": "2018-09-08T04:08:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1943.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68149646824747,
              71.26736116013507,
              8.159409173128623
            ],
            [
              -156.68201673433668,
              71.27170775414565,
              8.159409173128623
            ],
            [
              -156.66853209850123,
              71.27189119818757,
              16.03940917312862
            ],
            [
              -156.66801444255805,
              71.26754456325251,
              16.03940917312862
            ],
            [
              -156.68149646824747,
              71.26736116013507,
              8.159409173128623
            ]
          ]
        ]
      },
      "bbox": [
        -156.6820167,
        71.26736116,
        8.159409173,
        -156.6680144,
        71.2718912,
        16.03940917
      ],
      "properties": {
        "datetime": "2018-09-11T18:10:50Z",
        "pc:count": 3928770,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98271.08622,
            "count": 3928770,
            "maximum": -98025.41183,
            "minimum": -98521.29183,
            "name": "X",
            "position": 0,
            "stddev": 137.4541702,
            "variance": 18893.64891
          },
          {
            "average": 2365579.216,
            "count": 3928770,
            "maximum": 2365811.868,
            "minimum": 2365338.288,
            "name": "Y",
            "position": 1,
            "stddev": 127.8969312,
            "variance": 16357.62501
          },
          {
            "average": 9.308803551,
            "count": 3928770,
            "maximum": 16.03940917,
            "minimum": 8.159409173,
            "name": "Z",
            "position": 2,
            "stddev": 0.5973488477,
            "variance": 0.3568256459
          },
          {
            "average": 40725.00942,
            "count": 3928770,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12049.86763,
            "variance": 145199309.8
          },
          {
            "average": 1.000001527,
            "count": 3928770,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001235796743,
            "variance": 1.527193591e-06
          },
          {
            "average": 1.000003054,
            "count": 3928770,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00174767918,
            "variance": 3.054382517e-06
          },
          {
            "average": 0.5057112022,
            "count": 3928770,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999674447,
            "variance": 0.2499674458
          },
          {
            "average": 0.0004777576697,
            "count": 3928770,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02185244926,
            "variance": 0.0004775295389
          },
          {
            "average": 1.283445709,
            "count": 3928770,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4511462334,
            "variance": 0.2035329239
          },
          {
            "average": -3.469701241,
            "count": 3928770,
            "maximum": 16.33200073,
            "minimum": -19.77599907,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60253616,
            "variance": 112.413773
          },
          {
            "average": 0.4803785918,
            "count": 3928770,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996149156,
            "variance": 0.2496150639
          },
          {
            "average": 429.03188,
            "count": 3928770,
            "maximum": 461,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.80283977,
            "variance": 353.5467832
          },
          {
            "average": 220500925.9,
            "count": 3928770,
            "maximum": 220724650.1,
            "minimum": 220420525,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133136.1293,
            "variance": 17725228930.0
          },
          {
            "average": 0.4803785918,
            "count": 3928770,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996149156,
            "variance": 0.2496150639
          },
          {
            "average": 0,
            "count": 3928770,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3928770,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3928770,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2000073814,
            "count": 3928770,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4000055869,
            "variance": 0.1600044695
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98521.29183,
          2365338.288,
          8.159409173,
          -98025.41183,
          2365811.868,
          16.03940917
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98521.2918344389,
                2365338.2884250497,
                8.159409173128623
              ],
              [
                -98521.2918344389,
                2365811.86842505,
                8.159409173128623
              ],
              [
                -98025.4118344389,
                2365811.86842505,
                16.03940917312862
              ],
              [
                -98025.4118344389,
                2365338.2884250497,
                16.03940917312862
              ],
              [
                -98521.2918344389,
                2365338.2884250497,
                8.159409173128623
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:10:50+00:00",
        "end_time": "2018-09-08T05:42:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1943.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1943.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1943.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1943.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6820167,
            71.26736116,
            8.159409173,
            -156.6680144,
            71.2718912,
            16.03940917
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68149646824747,
                  71.26736116013507,
                  8.159409173128623
                ],
                [
                  -156.68201673433668,
                  71.27170775414565,
                  8.159409173128623
                ],
                [
                  -156.66853209850123,
                  71.27189119818757,
                  16.03940917312862
                ],
                [
                  -156.66801444255805,
                  71.26754456325251,
                  16.03940917312862
                ],
                [
                  -156.68149646824747,
                  71.26736116013507,
                  8.159409173128623
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1943.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1943.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:10:50Z",
            "pc:count": 3928770,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98271.08622,
                "count": 3928770,
                "maximum": -98025.41183,
                "minimum": -98521.29183,
                "name": "X",
                "position": 0,
                "stddev": 137.4541702,
                "variance": 18893.64891
              },
              {
                "average": 2365579.216,
                "count": 3928770,
                "maximum": 2365811.868,
                "minimum": 2365338.288,
                "name": "Y",
                "position": 1,
                "stddev": 127.8969312,
                "variance": 16357.62501
              },
              {
                "average": 9.308803551,
                "count": 3928770,
                "maximum": 16.03940917,
                "minimum": 8.159409173,
                "name": "Z",
                "position": 2,
                "stddev": 0.5973488477,
                "variance": 0.3568256459
              },
              {
                "average": 40725.00942,
                "count": 3928770,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12049.86763,
                "variance": 145199309.8
              },
              {
                "average": 1.000001527,
                "count": 3928770,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001235796743,
                "variance": 1.527193591e-06
              },
              {
                "average": 1.000003054,
                "count": 3928770,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00174767918,
                "variance": 3.054382517e-06
              },
              {
                "average": 0.5057112022,
                "count": 3928770,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999674447,
                "variance": 0.2499674458
              },
              {
                "average": 0.0004777576697,
                "count": 3928770,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02185244926,
                "variance": 0.0004775295389
              },
              {
                "average": 1.283445709,
                "count": 3928770,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4511462334,
                "variance": 0.2035329239
              },
              {
                "average": -3.469701241,
                "count": 3928770,
                "maximum": 16.33200073,
                "minimum": -19.77599907,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60253616,
                "variance": 112.413773
              },
              {
                "average": 0.4803785918,
                "count": 3928770,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996149156,
                "variance": 0.2496150639
              },
              {
                "average": 429.03188,
                "count": 3928770,
                "maximum": 461,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.80283977,
                "variance": 353.5467832
              },
              {
                "average": 220500925.9,
                "count": 3928770,
                "maximum": 220724650.1,
                "minimum": 220420525,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133136.1293,
                "variance": 17725228930.0
              },
              {
                "average": 0.4803785918,
                "count": 3928770,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996149156,
                "variance": 0.2496150639
              },
              {
                "average": 0,
                "count": 3928770,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3928770,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3928770,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2000073814,
                "count": 3928770,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4000055869,
                "variance": 0.1600044695
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98521.29183,
              2365338.288,
              8.159409173,
              -98025.41183,
              2365811.868,
              16.03940917
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98521.2918344389,
                    2365338.2884250497,
                    8.159409173128623
                  ],
                  [
                    -98521.2918344389,
                    2365811.86842505,
                    8.159409173128623
                  ],
                  [
                    -98025.4118344389,
                    2365811.86842505,
                    16.03940917312862
                  ],
                  [
                    -98025.4118344389,
                    2365338.2884250497,
                    16.03940917312862
                  ],
                  [
                    -98521.2918344389,
                    2365338.2884250497,
                    8.159409173128623
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:10:50+00:00",
            "end_time": "2018-09-08T05:42:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2110.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80772690387167,
              71.28869603549164,
              -10.597047606805233
            ],
            [
              -156.80827223507188,
              71.29304346312459,
              -10.597047606805233
            ],
            [
              -156.7947796190816,
              71.29323553261683,
              20.702952393194767
            ],
            [
              -156.794236901775,
              71.28888806207412,
              20.702952393194767
            ],
            [
              -156.80772690387167,
              71.28869603549164,
              -10.597047606805233
            ]
          ]
        ]
      },
      "bbox": [
        -156.8082722,
        71.28869604,
        -10.59704761,
        -156.7942369,
        71.29323553,
        20.70295239
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:38Z",
        "pc:count": 1858689,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102797.8816,
            "count": 1858689,
            "maximum": -102562.5417,
            "minimum": -103058.2817,
            "name": "X",
            "position": 0,
            "stddev": 137.4078305,
            "variance": 18880.91187
          },
          {
            "average": 2368074.234,
            "count": 1858689,
            "maximum": 2368324.02,
            "minimum": 2367850.38,
            "name": "Y",
            "position": 1,
            "stddev": 130.4209181,
            "variance": 17009.61588
          },
          {
            "average": 2.405285306,
            "count": 1858689,
            "maximum": 20.70295239,
            "minimum": -10.59704761,
            "name": "Z",
            "position": 2,
            "stddev": 2.731507395,
            "variance": 7.461132649
          },
          {
            "average": 18707.76564,
            "count": 1858689,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13283.99588,
            "variance": 176464546.7
          },
          {
            "average": 1.004844813,
            "count": 1858689,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07164017787,
            "variance": 0.005132315086
          },
          {
            "average": 1.009699848,
            "count": 1858689,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1026790433,
            "variance": 0.01054298594
          },
          {
            "average": 0.506081437,
            "count": 1858689,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999631492,
            "variance": 0.2499631506
          },
          {
            "average": 0.0006149495693,
            "count": 1858689,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02479055742,
            "variance": 0.000614571737
          },
          {
            "average": 6.254751602,
            "count": 1858689,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.408860685,
            "variance": 11.62033117
          },
          {
            "average": -2.397671368,
            "count": 1858689,
            "maximum": 16.4279995,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.844403649,
            "variance": 61.5346686
          },
          {
            "average": 0.4832088639,
            "count": 1858689,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997181126,
            "variance": 0.2497181921
          },
          {
            "average": 404.7122891,
            "count": 1858689,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7293586968,
            "variance": 0.5319641086
          },
          {
            "average": 220414316.4,
            "count": 1858689,
            "maximum": 220415698.2,
            "minimum": 220413457.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 441.7565982,
            "variance": 195148.8921
          },
          {
            "average": 0.4832088639,
            "count": 1858689,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997181126,
            "variance": 0.2497181921
          },
          {
            "average": 0,
            "count": 1858689,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1858689,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1858689,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1123173377,
            "count": 1858689,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3157565628,
            "variance": 0.09970220695
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103058.2817,
          2367850.38,
          -10.59704761,
          -102562.5417,
          2368324.02,
          20.70295239
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103058.28174172097,
                2367850.380190767,
                -10.597047606805233
              ],
              [
                -103058.28174172097,
                2368324.0201907665,
                -10.597047606805233
              ],
              [
                -102562.54174172098,
                2368324.0201907665,
                20.702952393194767
              ],
              [
                -102562.54174172098,
                2367850.380190767,
                20.702952393194767
              ],
              [
                -103058.28174172097,
                2367850.380190767,
                -10.597047606805233
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:38+00:00",
        "end_time": "2018-09-08T03:44:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2110.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2110.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2110.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2110.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8082722,
            71.28869604,
            -10.59704761,
            -156.7942369,
            71.29323553,
            20.70295239
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80772690387167,
                  71.28869603549164,
                  -10.597047606805233
                ],
                [
                  -156.80827223507188,
                  71.29304346312459,
                  -10.597047606805233
                ],
                [
                  -156.7947796190816,
                  71.29323553261683,
                  20.702952393194767
                ],
                [
                  -156.794236901775,
                  71.28888806207412,
                  20.702952393194767
                ],
                [
                  -156.80772690387167,
                  71.28869603549164,
                  -10.597047606805233
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2110.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2110.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:38Z",
            "pc:count": 1858689,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102797.8816,
                "count": 1858689,
                "maximum": -102562.5417,
                "minimum": -103058.2817,
                "name": "X",
                "position": 0,
                "stddev": 137.4078305,
                "variance": 18880.91187
              },
              {
                "average": 2368074.234,
                "count": 1858689,
                "maximum": 2368324.02,
                "minimum": 2367850.38,
                "name": "Y",
                "position": 1,
                "stddev": 130.4209181,
                "variance": 17009.61588
              },
              {
                "average": 2.405285306,
                "count": 1858689,
                "maximum": 20.70295239,
                "minimum": -10.59704761,
                "name": "Z",
                "position": 2,
                "stddev": 2.731507395,
                "variance": 7.461132649
              },
              {
                "average": 18707.76564,
                "count": 1858689,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13283.99588,
                "variance": 176464546.7
              },
              {
                "average": 1.004844813,
                "count": 1858689,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07164017787,
                "variance": 0.005132315086
              },
              {
                "average": 1.009699848,
                "count": 1858689,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1026790433,
                "variance": 0.01054298594
              },
              {
                "average": 0.506081437,
                "count": 1858689,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999631492,
                "variance": 0.2499631506
              },
              {
                "average": 0.0006149495693,
                "count": 1858689,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02479055742,
                "variance": 0.000614571737
              },
              {
                "average": 6.254751602,
                "count": 1858689,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.408860685,
                "variance": 11.62033117
              },
              {
                "average": -2.397671368,
                "count": 1858689,
                "maximum": 16.4279995,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.844403649,
                "variance": 61.5346686
              },
              {
                "average": 0.4832088639,
                "count": 1858689,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997181126,
                "variance": 0.2497181921
              },
              {
                "average": 404.7122891,
                "count": 1858689,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7293586968,
                "variance": 0.5319641086
              },
              {
                "average": 220414316.4,
                "count": 1858689,
                "maximum": 220415698.2,
                "minimum": 220413457.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 441.7565982,
                "variance": 195148.8921
              },
              {
                "average": 0.4832088639,
                "count": 1858689,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997181126,
                "variance": 0.2497181921
              },
              {
                "average": 0,
                "count": 1858689,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1858689,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1858689,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1123173377,
                "count": 1858689,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3157565628,
                "variance": 0.09970220695
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103058.2817,
              2367850.38,
              -10.59704761,
              -102562.5417,
              2368324.02,
              20.70295239
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103058.28174172097,
                    2367850.380190767,
                    -10.597047606805233
                  ],
                  [
                    -103058.28174172097,
                    2368324.0201907665,
                    -10.597047606805233
                  ],
                  [
                    -102562.54174172098,
                    2368324.0201907665,
                    20.702952393194767
                  ],
                  [
                    -102562.54174172098,
                    2367850.380190767,
                    20.702952393194767
                  ],
                  [
                    -103058.28174172097,
                    2367850.380190767,
                    -10.597047606805233
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:38+00:00",
            "end_time": "2018-09-08T03:44:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1617.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83595546812094,
              71.24378824491987,
              6.914380069565849
            ],
            [
              -156.83650517629795,
              71.24813428217544,
              6.914380069565849
            ],
            [
              -156.82304198020978,
              71.24832819726548,
              13.57438006956585
            ],
            [
              -156.82249487486672,
              71.24398211681373,
              13.57438006956585
            ],
            [
              -156.83595546812094,
              71.24378824491987,
              6.914380069565849
            ]
          ]
        ]
      },
      "bbox": [
        -156.8365052,
        71.24378824,
        6.91438007,
        -156.8224949,
        71.2483282,
        13.57438007
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:54Z",
        "pc:count": 3566422,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104059.5251,
            "count": 3566422,
            "maximum": -103806.8436,
            "minimum": -104302.5036,
            "name": "X",
            "position": 0,
            "stddev": 136.2610679,
            "variance": 18567.07862
          },
          {
            "average": 2363246.451,
            "count": 3566422,
            "maximum": 2363483.488,
            "minimum": 2363009.848,
            "name": "Y",
            "position": 1,
            "stddev": 130.2015414,
            "variance": 16952.44139
          },
          {
            "average": 11.22471635,
            "count": 3566422,
            "maximum": 13.57438007,
            "minimum": 6.91438007,
            "name": "Z",
            "position": 2,
            "stddev": 1.191401335,
            "variance": 1.419437142
          },
          {
            "average": 46908.25577,
            "count": 3566422,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9128.460703,
            "variance": 83328794.8
          },
          {
            "average": 1,
            "count": 3566422,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3566422,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.504406377,
            "count": 3566422,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999806536,
            "variance": 0.2499806539
          },
          {
            "average": 0.0003841385007,
            "count": 3566422,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01959568947,
            "variance": 0.000383991046
          },
          {
            "average": 1.296820174,
            "count": 3566422,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4574454851,
            "variance": 0.2092563718
          },
          {
            "average": -0.4867999592,
            "count": 3566422,
            "maximum": 20.74799919,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.08654431,
            "variance": 101.7383761
          },
          {
            "average": 0.5149208366,
            "count": 3566422,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997773891,
            "variance": 0.2497774387
          },
          {
            "average": 421.8597048,
            "count": 3566422,
            "maximum": 466,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.81875152,
            "variance": 392.7829118
          },
          {
            "average": 220472145.4,
            "count": 3566422,
            "maximum": 220726514.2,
            "minimum": 220418033.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 116418.7629,
            "variance": 13553328350.0
          },
          {
            "average": 0.5149208366,
            "count": 3566422,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997773891,
            "variance": 0.2497774387
          },
          {
            "average": 0,
            "count": 3566422,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3566422,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3566422,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2099785163,
            "count": 3566422,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4072929971,
            "variance": 0.1658875855
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104302.5036,
          2363009.848,
          6.91438007,
          -103806.8436,
          2363483.488,
          13.57438007
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104302.50358865979,
                2363009.848346271,
                6.914380069565849
              ],
              [
                -104302.50358865979,
                2363483.4883462708,
                6.914380069565849
              ],
              [
                -103806.84358865979,
                2363483.4883462708,
                13.57438006956585
              ],
              [
                -103806.84358865979,
                2363009.848346271,
                13.57438006956585
              ],
              [
                -104302.50358865979,
                2363009.848346271,
                6.914380069565849
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:54+00:00",
        "end_time": "2018-09-08T05:00:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1617.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1617.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1617.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1617.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8365052,
            71.24378824,
            6.91438007,
            -156.8224949,
            71.2483282,
            13.57438007
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83595546812094,
                  71.24378824491987,
                  6.914380069565849
                ],
                [
                  -156.83650517629795,
                  71.24813428217544,
                  6.914380069565849
                ],
                [
                  -156.82304198020978,
                  71.24832819726548,
                  13.57438006956585
                ],
                [
                  -156.82249487486672,
                  71.24398211681373,
                  13.57438006956585
                ],
                [
                  -156.83595546812094,
                  71.24378824491987,
                  6.914380069565849
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1617.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1617.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:54Z",
            "pc:count": 3566422,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104059.5251,
                "count": 3566422,
                "maximum": -103806.8436,
                "minimum": -104302.5036,
                "name": "X",
                "position": 0,
                "stddev": 136.2610679,
                "variance": 18567.07862
              },
              {
                "average": 2363246.451,
                "count": 3566422,
                "maximum": 2363483.488,
                "minimum": 2363009.848,
                "name": "Y",
                "position": 1,
                "stddev": 130.2015414,
                "variance": 16952.44139
              },
              {
                "average": 11.22471635,
                "count": 3566422,
                "maximum": 13.57438007,
                "minimum": 6.91438007,
                "name": "Z",
                "position": 2,
                "stddev": 1.191401335,
                "variance": 1.419437142
              },
              {
                "average": 46908.25577,
                "count": 3566422,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9128.460703,
                "variance": 83328794.8
              },
              {
                "average": 1,
                "count": 3566422,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3566422,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.504406377,
                "count": 3566422,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999806536,
                "variance": 0.2499806539
              },
              {
                "average": 0.0003841385007,
                "count": 3566422,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01959568947,
                "variance": 0.000383991046
              },
              {
                "average": 1.296820174,
                "count": 3566422,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4574454851,
                "variance": 0.2092563718
              },
              {
                "average": -0.4867999592,
                "count": 3566422,
                "maximum": 20.74799919,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.08654431,
                "variance": 101.7383761
              },
              {
                "average": 0.5149208366,
                "count": 3566422,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997773891,
                "variance": 0.2497774387
              },
              {
                "average": 421.8597048,
                "count": 3566422,
                "maximum": 466,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.81875152,
                "variance": 392.7829118
              },
              {
                "average": 220472145.4,
                "count": 3566422,
                "maximum": 220726514.2,
                "minimum": 220418033.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 116418.7629,
                "variance": 13553328350.0
              },
              {
                "average": 0.5149208366,
                "count": 3566422,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997773891,
                "variance": 0.2497774387
              },
              {
                "average": 0,
                "count": 3566422,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3566422,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3566422,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2099785163,
                "count": 3566422,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4072929971,
                "variance": 0.1658875855
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104302.5036,
              2363009.848,
              6.91438007,
              -103806.8436,
              2363483.488,
              13.57438007
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104302.50358865979,
                    2363009.848346271,
                    6.914380069565849
                  ],
                  [
                    -104302.50358865979,
                    2363483.4883462708,
                    6.914380069565849
                  ],
                  [
                    -103806.84358865979,
                    2363483.4883462708,
                    13.57438006956585
                  ],
                  [
                    -103806.84358865979,
                    2363009.848346271,
                    13.57438006956585
                  ],
                  [
                    -104302.50358865979,
                    2363009.848346271,
                    6.914380069565849
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:54+00:00",
            "end_time": "2018-09-08T05:00:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_1971.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8527763951225,
              71.2727256265131,
              0.855194920283899
            ],
            [
              -156.85314518781013,
              71.27562111574724,
              0.855194920283899
            ],
            [
              -156.84685279508372,
              71.27571230101033,
              1.495194920283899
            ],
            [
              -156.84648481374444,
              71.27281679822099,
              1.495194920283899
            ],
            [
              -156.8527763951225,
              71.2727256265131,
              0.855194920283899
            ]
          ]
        ]
      },
      "bbox": [
        -156.8531452,
        71.27272563,
        0.8551949203,
        -156.8464848,
        71.2757123,
        1.49519492
      ],
      "properties": {
        "datetime": "2018-09-08T04:22:22Z",
        "pc:count": 262940,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104638.2008,
            "count": 262940,
            "maximum": -104554.1013,
            "minimum": -104785.4813,
            "name": "X",
            "position": 0,
            "stddev": 52.80034711,
            "variance": 2787.876655
          },
          {
            "average": 2366293.757,
            "count": 262940,
            "maximum": 2366499.458,
            "minimum": 2366183.958,
            "name": "Y",
            "position": 1,
            "stddev": 73.63127926,
            "variance": 5421.565286
          },
          {
            "average": 1.177090067,
            "count": 262940,
            "maximum": 1.49519492,
            "minimum": 0.8551949203,
            "name": "Z",
            "position": 2,
            "stddev": 0.06054568529,
            "variance": 0.003665780007
          },
          {
            "average": 14595.71573,
            "count": 262940,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10368.25302,
            "variance": 107500670.8
          },
          {
            "average": 1,
            "count": 262940,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 262940,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4874305925,
            "count": 262940,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998429355,
            "variance": 0.2498429602
          },
          {
            "average": 0.0005704723511,
            "count": 262940,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02387779472,
            "variance": 0.0005701490808
          },
          {
            "average": 7.93934738,
            "count": 262940,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.076670868,
            "variance": 4.312561895
          },
          {
            "average": 5.317764128,
            "count": 262940,
            "maximum": 11.72999954,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 4.554794817,
            "variance": 20.74615583
          },
          {
            "average": 0.4754925078,
            "count": 262940,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993999713,
            "variance": 0.2494003313
          },
          {
            "average": 405.4549859,
            "count": 262940,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5706446132,
            "variance": 0.3256352745
          },
          {
            "average": 220414731.4,
            "count": 262940,
            "maximum": 220415742.7,
            "minimum": 220413775,
            "name": "GpsTime",
            "position": 12,
            "stddev": 239.8904974,
            "variance": 57547.45074
          },
          {
            "average": 0.4754925078,
            "count": 262940,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993999713,
            "variance": 0.2494003313
          },
          {
            "average": 0,
            "count": 262940,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 262940,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 262940,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03822164752,
            "count": 262940,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1917313042,
            "variance": 0.03676089299
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104785.4813,
          2366183.958,
          0.8551949203,
          -104554.1013,
          2366499.458,
          1.49519492
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104785.4812766593,
                2366183.958239915,
                0.855194920283899
              ],
              [
                -104785.4812766593,
                2366499.458239915,
                0.855194920283899
              ],
              [
                -104554.10127665929,
                2366499.458239915,
                1.495194920283899
              ],
              [
                -104554.10127665929,
                2366183.958239915,
                1.495194920283899
              ],
              [
                -104785.4812766593,
                2366183.958239915,
                0.855194920283899
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:22:22+00:00",
        "end_time": "2018-09-08T03:49:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_1971.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_1971.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_1971.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1971.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8531452,
            71.27272563,
            0.8551949203,
            -156.8464848,
            71.2757123,
            1.49519492
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8527763951225,
                  71.2727256265131,
                  0.855194920283899
                ],
                [
                  -156.85314518781013,
                  71.27562111574724,
                  0.855194920283899
                ],
                [
                  -156.84685279508372,
                  71.27571230101033,
                  1.495194920283899
                ],
                [
                  -156.84648481374444,
                  71.27281679822099,
                  1.495194920283899
                ],
                [
                  -156.8527763951225,
                  71.2727256265131,
                  0.855194920283899
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_1971.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1971.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:22:22Z",
            "pc:count": 262940,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104638.2008,
                "count": 262940,
                "maximum": -104554.1013,
                "minimum": -104785.4813,
                "name": "X",
                "position": 0,
                "stddev": 52.80034711,
                "variance": 2787.876655
              },
              {
                "average": 2366293.757,
                "count": 262940,
                "maximum": 2366499.458,
                "minimum": 2366183.958,
                "name": "Y",
                "position": 1,
                "stddev": 73.63127926,
                "variance": 5421.565286
              },
              {
                "average": 1.177090067,
                "count": 262940,
                "maximum": 1.49519492,
                "minimum": 0.8551949203,
                "name": "Z",
                "position": 2,
                "stddev": 0.06054568529,
                "variance": 0.003665780007
              },
              {
                "average": 14595.71573,
                "count": 262940,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10368.25302,
                "variance": 107500670.8
              },
              {
                "average": 1,
                "count": 262940,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 262940,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4874305925,
                "count": 262940,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998429355,
                "variance": 0.2498429602
              },
              {
                "average": 0.0005704723511,
                "count": 262940,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02387779472,
                "variance": 0.0005701490808
              },
              {
                "average": 7.93934738,
                "count": 262940,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.076670868,
                "variance": 4.312561895
              },
              {
                "average": 5.317764128,
                "count": 262940,
                "maximum": 11.72999954,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 4.554794817,
                "variance": 20.74615583
              },
              {
                "average": 0.4754925078,
                "count": 262940,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993999713,
                "variance": 0.2494003313
              },
              {
                "average": 405.4549859,
                "count": 262940,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5706446132,
                "variance": 0.3256352745
              },
              {
                "average": 220414731.4,
                "count": 262940,
                "maximum": 220415742.7,
                "minimum": 220413775,
                "name": "GpsTime",
                "position": 12,
                "stddev": 239.8904974,
                "variance": 57547.45074
              },
              {
                "average": 0.4754925078,
                "count": 262940,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993999713,
                "variance": 0.2494003313
              },
              {
                "average": 0,
                "count": 262940,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 262940,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 262940,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03822164752,
                "count": 262940,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1917313042,
                "variance": 0.03676089299
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104785.4813,
              2366183.958,
              0.8551949203,
              -104554.1013,
              2366499.458,
              1.49519492
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104785.4812766593,
                    2366183.958239915,
                    0.855194920283899
                  ],
                  [
                    -104785.4812766593,
                    2366499.458239915,
                    0.855194920283899
                  ],
                  [
                    -104554.10127665929,
                    2366499.458239915,
                    1.495194920283899
                  ],
                  [
                    -104554.10127665929,
                    2366183.958239915,
                    1.495194920283899
                  ],
                  [
                    -104785.4812766593,
                    2366183.958239915,
                    0.855194920283899
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:22:22+00:00",
            "end_time": "2018-09-08T03:49:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1834.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77125430403112,
              71.25977037009416,
              12.17059267902039
            ],
            [
              -156.77179195195225,
              71.26411778598029,
              12.17059267902039
            ],
            [
              -156.75831751857692,
              71.26430730429064,
              14.49059267902039
            ],
            [
              -156.75778247828092,
              71.25995984613542,
              14.49059267902039
            ],
            [
              -156.77125430403112,
              71.25977037009416,
              12.17059267902039
            ]
          ]
        ]
      },
      "bbox": [
        -156.771792,
        71.25977037,
        12.17059268,
        -156.7577825,
        71.2643073,
        14.49059268
      ],
      "properties": {
        "datetime": "2018-09-08T05:36:04Z",
        "pc:count": 2836013,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101601.0512,
            "count": 2836013,
            "maximum": -101355.9905,
            "minimum": -101851.6905,
            "name": "X",
            "position": 0,
            "stddev": 137.2213866,
            "variance": 18829.70894
          },
          {
            "average": 2364886.284,
            "count": 2836013,
            "maximum": 2365121.704,
            "minimum": 2364647.984,
            "name": "Y",
            "position": 1,
            "stddev": 129.2333787,
            "variance": 16701.26616
          },
          {
            "average": 13.4699142,
            "count": 2836013,
            "maximum": 14.49059268,
            "minimum": 12.17059268,
            "name": "Z",
            "position": 2,
            "stddev": 0.424277362,
            "variance": 0.1800112799
          },
          {
            "average": 45636.92352,
            "count": 2836013,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8916.997814,
            "variance": 79512850.02
          },
          {
            "average": 1,
            "count": 2836013,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2836013,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4996087818,
            "count": 2836013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999351,
            "variance": 0.2499999351
          },
          {
            "average": 0.0004414648311,
            "count": 2836013,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02100642986,
            "variance": 0.0004412700955
          },
          {
            "average": 1.343074944,
            "count": 2836013,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4748366143,
            "variance": 0.2254698103
          },
          {
            "average": -0.8801955851,
            "count": 2836013,
            "maximum": 16.36199951,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.35977512,
            "variance": 107.3249406
          },
          {
            "average": 0.4549432601,
            "count": 2836013,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979658398,
            "variance": 0.2479699776
          },
          {
            "average": 413.5954765,
            "count": 2836013,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9783036619,
            "variance": 0.9570780549
          },
          {
            "average": 220419296.9,
            "count": 2836013,
            "maximum": 220420164.3,
            "minimum": 220418300.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 563.5592376,
            "variance": 317599.0143
          },
          {
            "average": 0.4549432601,
            "count": 2836013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979658398,
            "variance": 0.2479699776
          },
          {
            "average": 0,
            "count": 2836013,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2836013,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2836013,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2274474764,
            "count": 2836013,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4191839499,
            "variance": 0.1757151839
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101851.6905,
          2364647.984,
          12.17059268,
          -101355.9905,
          2365121.704,
          14.49059268
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101851.6905429173,
                2364647.983624959,
                12.17059267902039
              ],
              [
                -101851.6905429173,
                2365121.7036249586,
                12.17059267902039
              ],
              [
                -101355.9905429173,
                2365121.7036249586,
                14.49059267902039
              ],
              [
                -101355.9905429173,
                2364647.983624959,
                14.49059267902039
              ],
              [
                -101851.6905429173,
                2364647.983624959,
                12.17059267902039
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:36:04+00:00",
        "end_time": "2018-09-08T05:05:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1834.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1834.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1834.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1834.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.771792,
            71.25977037,
            12.17059268,
            -156.7577825,
            71.2643073,
            14.49059268
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77125430403112,
                  71.25977037009416,
                  12.17059267902039
                ],
                [
                  -156.77179195195225,
                  71.26411778598029,
                  12.17059267902039
                ],
                [
                  -156.75831751857692,
                  71.26430730429064,
                  14.49059267902039
                ],
                [
                  -156.75778247828092,
                  71.25995984613542,
                  14.49059267902039
                ],
                [
                  -156.77125430403112,
                  71.25977037009416,
                  12.17059267902039
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1834.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1834.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:36:04Z",
            "pc:count": 2836013,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101601.0512,
                "count": 2836013,
                "maximum": -101355.9905,
                "minimum": -101851.6905,
                "name": "X",
                "position": 0,
                "stddev": 137.2213866,
                "variance": 18829.70894
              },
              {
                "average": 2364886.284,
                "count": 2836013,
                "maximum": 2365121.704,
                "minimum": 2364647.984,
                "name": "Y",
                "position": 1,
                "stddev": 129.2333787,
                "variance": 16701.26616
              },
              {
                "average": 13.4699142,
                "count": 2836013,
                "maximum": 14.49059268,
                "minimum": 12.17059268,
                "name": "Z",
                "position": 2,
                "stddev": 0.424277362,
                "variance": 0.1800112799
              },
              {
                "average": 45636.92352,
                "count": 2836013,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8916.997814,
                "variance": 79512850.02
              },
              {
                "average": 1,
                "count": 2836013,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2836013,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4996087818,
                "count": 2836013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999351,
                "variance": 0.2499999351
              },
              {
                "average": 0.0004414648311,
                "count": 2836013,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02100642986,
                "variance": 0.0004412700955
              },
              {
                "average": 1.343074944,
                "count": 2836013,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4748366143,
                "variance": 0.2254698103
              },
              {
                "average": -0.8801955851,
                "count": 2836013,
                "maximum": 16.36199951,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.35977512,
                "variance": 107.3249406
              },
              {
                "average": 0.4549432601,
                "count": 2836013,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979658398,
                "variance": 0.2479699776
              },
              {
                "average": 413.5954765,
                "count": 2836013,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9783036619,
                "variance": 0.9570780549
              },
              {
                "average": 220419296.9,
                "count": 2836013,
                "maximum": 220420164.3,
                "minimum": 220418300.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 563.5592376,
                "variance": 317599.0143
              },
              {
                "average": 0.4549432601,
                "count": 2836013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979658398,
                "variance": 0.2479699776
              },
              {
                "average": 0,
                "count": 2836013,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2836013,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2836013,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2274474764,
                "count": 2836013,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4191839499,
                "variance": 0.1757151839
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101851.6905,
              2364647.984,
              12.17059268,
              -101355.9905,
              2365121.704,
              14.49059268
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101851.6905429173,
                    2364647.983624959,
                    12.17059267902039
                  ],
                  [
                    -101851.6905429173,
                    2365121.7036249586,
                    12.17059267902039
                  ],
                  [
                    -101355.9905429173,
                    2365121.7036249586,
                    14.49059267902039
                  ],
                  [
                    -101355.9905429173,
                    2364647.983624959,
                    14.49059267902039
                  ],
                  [
                    -101851.6905429173,
                    2364647.983624959,
                    12.17059267902039
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:36:04+00:00",
            "end_time": "2018-09-08T05:05:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1620.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79775401056776,
              71.24354743407225,
              9.45406892276429
            ],
            [
              -156.79829601479878,
              71.24789118464545,
              9.45406892276429
            ],
            [
              -156.7848326373515,
              71.24808248262082,
              10.91406892276429
            ],
            [
              -156.78429323472318,
              71.24373868945744,
              10.91406892276429
            ],
            [
              -156.79775401056776,
              71.24354743407225,
              9.45406892276429
            ]
          ]
        ]
      },
      "bbox": [
        -156.798296,
        71.24354743,
        9.454068923,
        -156.7842932,
        71.24808248,
        10.91406892
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:15Z",
        "pc:count": 3261712,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102662.1101,
            "count": 3261712,
            "maximum": -102403.7883,
            "minimum": -102899.4483,
            "name": "X",
            "position": 0,
            "stddev": 128.2092247,
            "variance": 16437.60531
          },
          {
            "average": 2363164.13,
            "count": 3261712,
            "maximum": 2363397.437,
            "minimum": 2362924.057,
            "name": "Y",
            "position": 1,
            "stddev": 131.197488,
            "variance": 17212.78085
          },
          {
            "average": 10.07206454,
            "count": 3261712,
            "maximum": 10.91406892,
            "minimum": 9.454068923,
            "name": "Z",
            "position": 2,
            "stddev": 0.2841156001,
            "variance": 0.08072167423
          },
          {
            "average": 33734.8513,
            "count": 3261712,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13936.26501,
            "variance": 194219482.5
          },
          {
            "average": 1,
            "count": 3261712,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3261712,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4986740092,
            "count": 3261712,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983184,
            "variance": 0.2499983184
          },
          {
            "average": 0.0004350476069,
            "count": 3261712,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02085326051,
            "variance": 0.0004348584738
          },
          {
            "average": 2.089581177,
            "count": 3261712,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.390107756,
            "variance": 5.712615083
          },
          {
            "average": -0.02372783903,
            "count": 3261712,
            "maximum": 20.54400063,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.656350438,
            "variance": 93.24510377
          },
          {
            "average": 0.470748797,
            "count": 3261712,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991437103,
            "variance": 0.2491444435
          },
          {
            "average": 423.7021123,
            "count": 3261712,
            "maximum": 466,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.52362748,
            "variance": 343.124775
          },
          {
            "average": 220471264.3,
            "count": 3261712,
            "maximum": 220726535.1,
            "minimum": 220419345.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 114040.6125,
            "variance": 13005261310.0
          },
          {
            "average": 0.470748797,
            "count": 3261712,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991437103,
            "variance": 0.2491444435
          },
          {
            "average": 0,
            "count": 3261712,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3261712,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3261712,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1731020397,
            "count": 3261712,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3783355223,
            "variance": 0.1431377674
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102899.4483,
          2362924.057,
          9.454068923,
          -102403.7883,
          2363397.437,
          10.91406892
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102899.44827392936,
                2362924.057277584,
                9.45406892276429
              ],
              [
                -102899.44827392936,
                2363397.437277584,
                9.45406892276429
              ],
              [
                -102403.78827392936,
                2363397.437277584,
                10.91406892276429
              ],
              [
                -102403.78827392936,
                2362924.057277584,
                10.91406892276429
              ],
              [
                -102899.44827392936,
                2362924.057277584,
                9.45406892276429
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:15+00:00",
        "end_time": "2018-09-08T05:22:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1620.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1620.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1620.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1620.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.798296,
            71.24354743,
            9.454068923,
            -156.7842932,
            71.24808248,
            10.91406892
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79775401056776,
                  71.24354743407225,
                  9.45406892276429
                ],
                [
                  -156.79829601479878,
                  71.24789118464545,
                  9.45406892276429
                ],
                [
                  -156.7848326373515,
                  71.24808248262082,
                  10.91406892276429
                ],
                [
                  -156.78429323472318,
                  71.24373868945744,
                  10.91406892276429
                ],
                [
                  -156.79775401056776,
                  71.24354743407225,
                  9.45406892276429
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1620.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1620.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:15Z",
            "pc:count": 3261712,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102662.1101,
                "count": 3261712,
                "maximum": -102403.7883,
                "minimum": -102899.4483,
                "name": "X",
                "position": 0,
                "stddev": 128.2092247,
                "variance": 16437.60531
              },
              {
                "average": 2363164.13,
                "count": 3261712,
                "maximum": 2363397.437,
                "minimum": 2362924.057,
                "name": "Y",
                "position": 1,
                "stddev": 131.197488,
                "variance": 17212.78085
              },
              {
                "average": 10.07206454,
                "count": 3261712,
                "maximum": 10.91406892,
                "minimum": 9.454068923,
                "name": "Z",
                "position": 2,
                "stddev": 0.2841156001,
                "variance": 0.08072167423
              },
              {
                "average": 33734.8513,
                "count": 3261712,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13936.26501,
                "variance": 194219482.5
              },
              {
                "average": 1,
                "count": 3261712,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3261712,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4986740092,
                "count": 3261712,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983184,
                "variance": 0.2499983184
              },
              {
                "average": 0.0004350476069,
                "count": 3261712,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02085326051,
                "variance": 0.0004348584738
              },
              {
                "average": 2.089581177,
                "count": 3261712,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.390107756,
                "variance": 5.712615083
              },
              {
                "average": -0.02372783903,
                "count": 3261712,
                "maximum": 20.54400063,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.656350438,
                "variance": 93.24510377
              },
              {
                "average": 0.470748797,
                "count": 3261712,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991437103,
                "variance": 0.2491444435
              },
              {
                "average": 423.7021123,
                "count": 3261712,
                "maximum": 466,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.52362748,
                "variance": 343.124775
              },
              {
                "average": 220471264.3,
                "count": 3261712,
                "maximum": 220726535.1,
                "minimum": 220419345.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 114040.6125,
                "variance": 13005261310.0
              },
              {
                "average": 0.470748797,
                "count": 3261712,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991437103,
                "variance": 0.2491444435
              },
              {
                "average": 0,
                "count": 3261712,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3261712,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3261712,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1731020397,
                "count": 3261712,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3783355223,
                "variance": 0.1431377674
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102899.4483,
              2362924.057,
              9.454068923,
              -102403.7883,
              2363397.437,
              10.91406892
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102899.44827392936,
                    2362924.057277584,
                    9.45406892276429
                  ],
                  [
                    -102899.44827392936,
                    2363397.437277584,
                    9.45406892276429
                  ],
                  [
                    -102403.78827392936,
                    2363397.437277584,
                    10.91406892276429
                  ],
                  [
                    -102403.78827392936,
                    2362924.057277584,
                    10.91406892276429
                  ],
                  [
                    -102899.44827392936,
                    2362924.057277584,
                    9.45406892276429
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:15+00:00",
            "end_time": "2018-09-08T05:22:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2111.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7949648933114,
              71.28861451072986,
              -13.510088817062986
            ],
            [
              -156.79550756188385,
              71.29296050260551,
              -13.510088817062986
            ],
            [
              -156.78201434256903,
              71.2931517050668,
              37.949911182937015
            ],
            [
              -156.78147428717807,
              71.28880567048938,
              37.949911182937015
            ],
            [
              -156.7949648933114,
              71.28861451072986,
              -13.510088817062986
            ]
          ]
        ]
      },
      "bbox": [
        -156.7955076,
        71.28861451,
        -13.51008882,
        -156.7814743,
        71.29315171,
        37.94991118
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:38Z",
        "pc:count": 3052426,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102333.2254,
            "count": 3052426,
            "maximum": -102094.7397,
            "minimum": -102590.4997,
            "name": "X",
            "position": 0,
            "stddev": 133.5867383,
            "variance": 17845.41664
          },
          {
            "average": 2368049.588,
            "count": 3052426,
            "maximum": 2368295.235,
            "minimum": 2367821.755,
            "name": "Y",
            "position": 1,
            "stddev": 127.443102,
            "variance": 16241.74424
          },
          {
            "average": 8.447670798,
            "count": 3052426,
            "maximum": 37.94991118,
            "minimum": -13.51008882,
            "name": "Z",
            "position": 2,
            "stddev": 3.316415616,
            "variance": 10.99861254
          },
          {
            "average": 29918.41152,
            "count": 3052426,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12675.38501,
            "variance": 160665385.2
          },
          {
            "average": 1.033784275,
            "count": 3052426,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1864594362,
            "variance": 0.03476712136
          },
          {
            "average": 1.067595087,
            "count": 3052426,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2634362346,
            "variance": 0.06939864972
          },
          {
            "average": 0.4984713798,
            "count": 3052426,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999977452,
            "variance": 0.2499977452
          },
          {
            "average": 0.0004822393729,
            "count": 3052426,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02195465727,
            "variance": 0.000482006976
          },
          {
            "average": 2.214381282,
            "count": 3052426,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.983830187,
            "variance": 3.935582212
          },
          {
            "average": -0.2401037788,
            "count": 3052426,
            "maximum": 16.31999969,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.11906024,
            "variance": 102.3953801
          },
          {
            "average": 0.456168962,
            "count": 3052426,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980752166,
            "variance": 0.2480789214
          },
          {
            "average": 405.6455187,
            "count": 3052426,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9309557208,
            "variance": 0.8666785541
          },
          {
            "average": 220414853.6,
            "count": 3052426,
            "maximum": 220415698.1,
            "minimum": 220413822.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 543.3547956,
            "variance": 295234.4339
          },
          {
            "average": 0.456168962,
            "count": 3052426,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980752166,
            "variance": 0.2480789214
          },
          {
            "average": 0,
            "count": 3052426,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3052426,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3052426,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2154751663,
            "count": 3052426,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.411151644,
            "variance": 0.1690456744
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102590.4997,
          2367821.755,
          -13.51008882,
          -102094.7397,
          2368295.235,
          37.94991118
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102590.49971137018,
                2367821.75454603,
                -13.510088817062986
              ],
              [
                -102590.49971137018,
                2368295.2345460304,
                -13.510088817062986
              ],
              [
                -102094.73971137017,
                2368295.2345460304,
                37.949911182937015
              ],
              [
                -102094.73971137017,
                2367821.75454603,
                37.949911182937015
              ],
              [
                -102590.49971137018,
                2367821.75454603,
                -13.510088817062986
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:38+00:00",
        "end_time": "2018-09-08T03:50:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2111.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2111.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2111.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2111.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7955076,
            71.28861451,
            -13.51008882,
            -156.7814743,
            71.29315171,
            37.94991118
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7949648933114,
                  71.28861451072986,
                  -13.510088817062986
                ],
                [
                  -156.79550756188385,
                  71.29296050260551,
                  -13.510088817062986
                ],
                [
                  -156.78201434256903,
                  71.2931517050668,
                  37.949911182937015
                ],
                [
                  -156.78147428717807,
                  71.28880567048938,
                  37.949911182937015
                ],
                [
                  -156.7949648933114,
                  71.28861451072986,
                  -13.510088817062986
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2111.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2111.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:38Z",
            "pc:count": 3052426,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102333.2254,
                "count": 3052426,
                "maximum": -102094.7397,
                "minimum": -102590.4997,
                "name": "X",
                "position": 0,
                "stddev": 133.5867383,
                "variance": 17845.41664
              },
              {
                "average": 2368049.588,
                "count": 3052426,
                "maximum": 2368295.235,
                "minimum": 2367821.755,
                "name": "Y",
                "position": 1,
                "stddev": 127.443102,
                "variance": 16241.74424
              },
              {
                "average": 8.447670798,
                "count": 3052426,
                "maximum": 37.94991118,
                "minimum": -13.51008882,
                "name": "Z",
                "position": 2,
                "stddev": 3.316415616,
                "variance": 10.99861254
              },
              {
                "average": 29918.41152,
                "count": 3052426,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12675.38501,
                "variance": 160665385.2
              },
              {
                "average": 1.033784275,
                "count": 3052426,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1864594362,
                "variance": 0.03476712136
              },
              {
                "average": 1.067595087,
                "count": 3052426,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2634362346,
                "variance": 0.06939864972
              },
              {
                "average": 0.4984713798,
                "count": 3052426,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999977452,
                "variance": 0.2499977452
              },
              {
                "average": 0.0004822393729,
                "count": 3052426,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02195465727,
                "variance": 0.000482006976
              },
              {
                "average": 2.214381282,
                "count": 3052426,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.983830187,
                "variance": 3.935582212
              },
              {
                "average": -0.2401037788,
                "count": 3052426,
                "maximum": 16.31999969,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.11906024,
                "variance": 102.3953801
              },
              {
                "average": 0.456168962,
                "count": 3052426,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980752166,
                "variance": 0.2480789214
              },
              {
                "average": 405.6455187,
                "count": 3052426,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9309557208,
                "variance": 0.8666785541
              },
              {
                "average": 220414853.6,
                "count": 3052426,
                "maximum": 220415698.1,
                "minimum": 220413822.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 543.3547956,
                "variance": 295234.4339
              },
              {
                "average": 0.456168962,
                "count": 3052426,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980752166,
                "variance": 0.2480789214
              },
              {
                "average": 0,
                "count": 3052426,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3052426,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3052426,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2154751663,
                "count": 3052426,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.411151644,
                "variance": 0.1690456744
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102590.4997,
              2367821.755,
              -13.51008882,
              -102094.7397,
              2368295.235,
              37.94991118
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102590.49971137018,
                    2367821.75454603,
                    -13.510088817062986
                  ],
                  [
                    -102590.49971137018,
                    2368295.2345460304,
                    -13.510088817062986
                  ],
                  [
                    -102094.73971137017,
                    2368295.2345460304,
                    37.949911182937015
                  ],
                  [
                    -102094.73971137017,
                    2367821.75454603,
                    37.949911182937015
                  ],
                  [
                    -102590.49971137018,
                    2367821.75454603,
                    -13.510088817062986
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:38+00:00",
            "end_time": "2018-09-08T03:50:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_1972.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84698737935082,
              71.27254558348619,
              0.926125993091576
            ],
            [
              -156.84753370190847,
              71.2768434198128,
              0.926125993091576
            ],
            [
              -156.83405552833273,
              71.27703809577292,
              9.506125993091576
            ],
            [
              -156.83351178537737,
              71.27274021649042,
              9.506125993091576
            ],
            [
              -156.84698737935082,
              71.27254558348619,
              0.926125993091576
            ]
          ]
        ]
      },
      "bbox": [
        -156.8475337,
        71.27254558,
        0.9261259931,
        -156.8335118,
        71.2770381,
        9.506125993
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:20Z",
        "pc:count": 1617754,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104315.6231,
            "count": 1617754,
            "maximum": -104078.235,
            "minimum": -104573.815,
            "name": "X",
            "position": 0,
            "stddev": 134.7490925,
            "variance": 18157.31793
          },
          {
            "average": 2366381.063,
            "count": 1617754,
            "maximum": 2366623.551,
            "minimum": 2366155.251,
            "name": "Y",
            "position": 1,
            "stddev": 129.455627,
            "variance": 16758.75936
          },
          {
            "average": 1.529123099,
            "count": 1617754,
            "maximum": 9.506125993,
            "minimum": 0.9261259931,
            "name": "Z",
            "position": 2,
            "stddev": 1.339158785,
            "variance": 1.793346251
          },
          {
            "average": 17224.35011,
            "count": 1617754,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12284.74898,
            "variance": 150915057.4
          },
          {
            "average": 1,
            "count": 1617754,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1617754,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4938507338,
            "count": 1617754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999623396,
            "variance": 0.249962341
          },
          {
            "average": 0.000637921464,
            "count": 1617754,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02524905769,
            "variance": 0.0006375149142
          },
          {
            "average": 7.264334998,
            "count": 1617754,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.864518507,
            "variance": 8.205466279
          },
          {
            "average": 2.970209057,
            "count": 1617754,
            "maximum": 16.49399948,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.991425674,
            "variance": 48.88003295
          },
          {
            "average": 0.5043684021,
            "count": 1617754,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999810712,
            "variance": 0.2499810716
          },
          {
            "average": 405.7434128,
            "count": 1617754,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7016264529,
            "variance": 0.4922796795
          },
          {
            "average": 220414888.3,
            "count": 1617754,
            "maximum": 220416040,
            "minimum": 220413779.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 371.2697273,
            "variance": 137841.2104
          },
          {
            "average": 0.5043684021,
            "count": 1617754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999810712,
            "variance": 0.2499810716
          },
          {
            "average": 0,
            "count": 1617754,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1617754,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1617754,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0631189909,
            "count": 1617754,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2431769324,
            "variance": 0.05913502044
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104573.815,
          2366155.251,
          0.9261259931,
          -104078.235,
          2366623.551,
          9.506125993
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104573.81501929132,
                2366155.2513581743,
                0.926125993091576
              ],
              [
                -104573.81501929132,
                2366623.551358174,
                0.926125993091576
              ],
              [
                -104078.23501929133,
                2366623.551358174,
                9.506125993091576
              ],
              [
                -104078.23501929133,
                2366155.2513581743,
                9.506125993091576
              ],
              [
                -104573.81501929132,
                2366155.2513581743,
                0.926125993091576
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:20+00:00",
        "end_time": "2018-09-08T03:49:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_1972.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_1972.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_1972.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1972.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8475337,
            71.27254558,
            0.9261259931,
            -156.8335118,
            71.2770381,
            9.506125993
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84698737935082,
                  71.27254558348619,
                  0.926125993091576
                ],
                [
                  -156.84753370190847,
                  71.2768434198128,
                  0.926125993091576
                ],
                [
                  -156.83405552833273,
                  71.27703809577292,
                  9.506125993091576
                ],
                [
                  -156.83351178537737,
                  71.27274021649042,
                  9.506125993091576
                ],
                [
                  -156.84698737935082,
                  71.27254558348619,
                  0.926125993091576
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_1972.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1972.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:20Z",
            "pc:count": 1617754,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104315.6231,
                "count": 1617754,
                "maximum": -104078.235,
                "minimum": -104573.815,
                "name": "X",
                "position": 0,
                "stddev": 134.7490925,
                "variance": 18157.31793
              },
              {
                "average": 2366381.063,
                "count": 1617754,
                "maximum": 2366623.551,
                "minimum": 2366155.251,
                "name": "Y",
                "position": 1,
                "stddev": 129.455627,
                "variance": 16758.75936
              },
              {
                "average": 1.529123099,
                "count": 1617754,
                "maximum": 9.506125993,
                "minimum": 0.9261259931,
                "name": "Z",
                "position": 2,
                "stddev": 1.339158785,
                "variance": 1.793346251
              },
              {
                "average": 17224.35011,
                "count": 1617754,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12284.74898,
                "variance": 150915057.4
              },
              {
                "average": 1,
                "count": 1617754,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1617754,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4938507338,
                "count": 1617754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999623396,
                "variance": 0.249962341
              },
              {
                "average": 0.000637921464,
                "count": 1617754,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02524905769,
                "variance": 0.0006375149142
              },
              {
                "average": 7.264334998,
                "count": 1617754,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.864518507,
                "variance": 8.205466279
              },
              {
                "average": 2.970209057,
                "count": 1617754,
                "maximum": 16.49399948,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.991425674,
                "variance": 48.88003295
              },
              {
                "average": 0.5043684021,
                "count": 1617754,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999810712,
                "variance": 0.2499810716
              },
              {
                "average": 405.7434128,
                "count": 1617754,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7016264529,
                "variance": 0.4922796795
              },
              {
                "average": 220414888.3,
                "count": 1617754,
                "maximum": 220416040,
                "minimum": 220413779.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 371.2697273,
                "variance": 137841.2104
              },
              {
                "average": 0.5043684021,
                "count": 1617754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999810712,
                "variance": 0.2499810716
              },
              {
                "average": 0,
                "count": 1617754,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1617754,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1617754,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0631189909,
                "count": 1617754,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2431769324,
                "variance": 0.05913502044
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104573.815,
              2366155.251,
              0.9261259931,
              -104078.235,
              2366623.551,
              9.506125993
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104573.81501929132,
                    2366155.2513581743,
                    0.926125993091576
                  ],
                  [
                    -104573.81501929132,
                    2366623.551358174,
                    0.926125993091576
                  ],
                  [
                    -104078.23501929133,
                    2366623.551358174,
                    9.506125993091576
                  ],
                  [
                    -104078.23501929133,
                    2366155.2513581743,
                    9.506125993091576
                  ],
                  [
                    -104573.81501929132,
                    2366155.2513581743,
                    0.926125993091576
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:20+00:00",
            "end_time": "2018-09-08T03:49:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1731.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74629532841777,
              71.25140780359237,
              10.301403386892488
            ],
            [
              -156.74682791570257,
              71.25575486004253,
              10.301403386892488
            ],
            [
              -156.73336155769593,
              71.25594261255523,
              13.801403386892488
            ],
            [
              -156.73283157551398,
              71.25159551425351,
              13.801403386892488
            ],
            [
              -156.74629532841777,
              71.25140780359237,
              10.301403386892488
            ]
          ]
        ]
      },
      "bbox": [
        -156.7468279,
        71.2514078,
        10.30140339,
        -156.7328316,
        71.25594261,
        13.80140339
      ],
      "properties": {
        "datetime": "2018-09-11T18:26:38Z",
        "pc:count": 3312010,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100688.8375,
            "count": 3312010,
            "maximum": -100476.9609,
            "minimum": -100972.5409,
            "name": "X",
            "position": 0,
            "stddev": 124.5703545,
            "variance": 15517.77321
          },
          {
            "average": 2363948.189,
            "count": 3312010,
            "maximum": 2364173.876,
            "minimum": 2363700.176,
            "name": "Y",
            "position": 1,
            "stddev": 131.2693346,
            "variance": 17231.63821
          },
          {
            "average": 11.18538866,
            "count": 3312010,
            "maximum": 13.80140339,
            "minimum": 10.30140339,
            "name": "Z",
            "position": 2,
            "stddev": 0.3627521224,
            "variance": 0.1315891023
          },
          {
            "average": 39651.00575,
            "count": 3312010,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14771.39249,
            "variance": 218194036.1
          },
          {
            "average": 1,
            "count": 3312010,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3312010,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4930223641,
            "count": 3312010,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999513857,
            "variance": 0.2499513881
          },
          {
            "average": 0.0006156382378,
            "count": 3312010,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02480442326,
            "variance": 0.0006152594131
          },
          {
            "average": 2.137594995,
            "count": 3312010,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.488772009,
            "variance": 6.193986115
          },
          {
            "average": 3.716049251,
            "count": 3312010,
            "maximum": 20.59199905,
            "minimum": -16.00200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.3866549,
            "variance": 107.8826
          },
          {
            "average": 0.4959942754,
            "count": 3312010,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999840294,
            "variance": 0.2499840296
          },
          {
            "average": 429.575126,
            "count": 3312010,
            "maximum": 464,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.52377835,
            "variance": 421.2254779
          },
          {
            "average": 220502737.8,
            "count": 3312010,
            "maximum": 220725598.9,
            "minimum": 220420155.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 134756.8361,
            "variance": 18159404880.0
          },
          {
            "average": 0.4959942754,
            "count": 3312010,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999840294,
            "variance": 0.2499840296
          },
          {
            "average": 0,
            "count": 3312010,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3312010,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3312010,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2193634681,
            "count": 3312010,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4138154041,
            "variance": 0.1712431887
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100972.5409,
          2363700.176,
          10.30140339,
          -100476.9609,
          2364173.876,
          13.80140339
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100972.5409409062,
                2363700.1759779756,
                10.301403386892488
              ],
              [
                -100972.5409409062,
                2364173.875977976,
                10.301403386892488
              ],
              [
                -100476.96094090621,
                2364173.875977976,
                13.801403386892488
              ],
              [
                -100476.96094090621,
                2363700.1759779756,
                13.801403386892488
              ],
              [
                -100972.5409409062,
                2363700.1759779756,
                10.301403386892488
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:26:38+00:00",
        "end_time": "2018-09-08T05:35:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1731.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1731.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1731.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1731.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7468279,
            71.2514078,
            10.30140339,
            -156.7328316,
            71.25594261,
            13.80140339
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74629532841777,
                  71.25140780359237,
                  10.301403386892488
                ],
                [
                  -156.74682791570257,
                  71.25575486004253,
                  10.301403386892488
                ],
                [
                  -156.73336155769593,
                  71.25594261255523,
                  13.801403386892488
                ],
                [
                  -156.73283157551398,
                  71.25159551425351,
                  13.801403386892488
                ],
                [
                  -156.74629532841777,
                  71.25140780359237,
                  10.301403386892488
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1731.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1731.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:26:38Z",
            "pc:count": 3312010,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100688.8375,
                "count": 3312010,
                "maximum": -100476.9609,
                "minimum": -100972.5409,
                "name": "X",
                "position": 0,
                "stddev": 124.5703545,
                "variance": 15517.77321
              },
              {
                "average": 2363948.189,
                "count": 3312010,
                "maximum": 2364173.876,
                "minimum": 2363700.176,
                "name": "Y",
                "position": 1,
                "stddev": 131.2693346,
                "variance": 17231.63821
              },
              {
                "average": 11.18538866,
                "count": 3312010,
                "maximum": 13.80140339,
                "minimum": 10.30140339,
                "name": "Z",
                "position": 2,
                "stddev": 0.3627521224,
                "variance": 0.1315891023
              },
              {
                "average": 39651.00575,
                "count": 3312010,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14771.39249,
                "variance": 218194036.1
              },
              {
                "average": 1,
                "count": 3312010,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3312010,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4930223641,
                "count": 3312010,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999513857,
                "variance": 0.2499513881
              },
              {
                "average": 0.0006156382378,
                "count": 3312010,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02480442326,
                "variance": 0.0006152594131
              },
              {
                "average": 2.137594995,
                "count": 3312010,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.488772009,
                "variance": 6.193986115
              },
              {
                "average": 3.716049251,
                "count": 3312010,
                "maximum": 20.59199905,
                "minimum": -16.00200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.3866549,
                "variance": 107.8826
              },
              {
                "average": 0.4959942754,
                "count": 3312010,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999840294,
                "variance": 0.2499840296
              },
              {
                "average": 429.575126,
                "count": 3312010,
                "maximum": 464,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.52377835,
                "variance": 421.2254779
              },
              {
                "average": 220502737.8,
                "count": 3312010,
                "maximum": 220725598.9,
                "minimum": 220420155.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 134756.8361,
                "variance": 18159404880.0
              },
              {
                "average": 0.4959942754,
                "count": 3312010,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999840294,
                "variance": 0.2499840296
              },
              {
                "average": 0,
                "count": 3312010,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3312010,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3312010,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2193634681,
                "count": 3312010,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4138154041,
                "variance": 0.1712431887
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100972.5409,
              2363700.176,
              10.30140339,
              -100476.9609,
              2364173.876,
              13.80140339
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100972.5409409062,
                    2363700.1759779756,
                    10.301403386892488
                  ],
                  [
                    -100972.5409409062,
                    2364173.875977976,
                    10.301403386892488
                  ],
                  [
                    -100476.96094090621,
                    2364173.875977976,
                    13.801403386892488
                  ],
                  [
                    -100476.96094090621,
                    2363700.1759779756,
                    13.801403386892488
                  ],
                  [
                    -100972.5409409062,
                    2363700.1759779756,
                    10.301403386892488
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:26:38+00:00",
            "end_time": "2018-09-08T05:35:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2054.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6934175200937,
              71.27973964027758,
              5.478773472120835
            ],
            [
              -156.69394060744767,
              71.28408840057878,
              5.478773472120835
            ],
            [
              -156.68044970569886,
              71.28427266207761,
              6.458773472120836
            ],
            [
              -156.67992923219285,
              71.27992386061969,
              6.458773472120836
            ],
            [
              -156.6934175200937,
              71.27973964027758,
              5.478773472120835
            ]
          ]
        ]
      },
      "bbox": [
        -156.6939406,
        71.27973964,
        5.478773472,
        -156.6799292,
        71.28427266,
        6.458773472
      ],
      "properties": {
        "datetime": "2018-09-11T17:58:50Z",
        "pc:count": 3274926,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98649.32832,
            "count": 3274926,
            "maximum": -98408.56809,
            "minimum": -98904.40809,
            "name": "X",
            "position": 0,
            "stddev": 134.5453279,
            "variance": 18102.44526
          },
          {
            "average": 2366939.571,
            "count": 3274926,
            "maximum": 2367176.237,
            "minimum": 2366702.457,
            "name": "Y",
            "position": 1,
            "stddev": 129.9716764,
            "variance": 16892.63668
          },
          {
            "average": 5.793702417,
            "count": 3274926,
            "maximum": 6.458773472,
            "minimum": 5.478773472,
            "name": "Z",
            "position": 2,
            "stddev": 0.1418662868,
            "variance": 0.02012604332
          },
          {
            "average": 28834.75306,
            "count": 3274926,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 8787.587462,
            "variance": 77221693.41
          },
          {
            "average": 1,
            "count": 3274926,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3274926,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5028812865,
            "count": 3274926,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999917745,
            "variance": 0.2499917745
          },
          {
            "average": 0.0003795505608,
            "count": 3274926,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01947836282,
            "variance": 0.0003794066181
          },
          {
            "average": 1.285229651,
            "count": 3274926,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4515846792,
            "variance": 0.2039287225
          },
          {
            "average": 0.7587024528,
            "count": 3274926,
            "maximum": 16.46999931,
            "minimum": -19.45199966,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.35722237,
            "variance": 107.2720551
          },
          {
            "average": 0.5029157911,
            "count": 3274926,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999915744,
            "variance": 0.2499915745
          },
          {
            "average": 414.2496704,
            "count": 3274926,
            "maximum": 459,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.26604689,
            "variance": 1.602874728
          },
          {
            "average": 220419747,
            "count": 3274926,
            "maximum": 220723930.8,
            "minimum": 220418365,
            "name": "GpsTime",
            "position": 12,
            "stddev": 5816.072832,
            "variance": 33826703.19
          },
          {
            "average": 0.5029157911,
            "count": 3274926,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999915744,
            "variance": 0.2499915745
          },
          {
            "average": 0,
            "count": 3274926,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3274926,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3274926,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2305087199,
            "count": 3274926,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4211585261,
            "variance": 0.1773745041
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98904.40809,
          2366702.457,
          5.478773472,
          -98408.56809,
          2367176.237,
          6.458773472
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98904.40808598905,
                2366702.4570439975,
                5.478773472120835
              ],
              [
                -98904.40808598905,
                2367176.2370439977,
                5.478773472120835
              ],
              [
                -98408.56808598906,
                2367176.2370439977,
                6.458773472120836
              ],
              [
                -98408.56808598906,
                2366702.4570439975,
                6.458773472120836
              ],
              [
                -98904.40808598905,
                2366702.4570439975,
                5.478773472120835
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:58:50+00:00",
        "end_time": "2018-09-08T05:06:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2054.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2054.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2054.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2054.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6939406,
            71.27973964,
            5.478773472,
            -156.6799292,
            71.28427266,
            6.458773472
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6934175200937,
                  71.27973964027758,
                  5.478773472120835
                ],
                [
                  -156.69394060744767,
                  71.28408840057878,
                  5.478773472120835
                ],
                [
                  -156.68044970569886,
                  71.28427266207761,
                  6.458773472120836
                ],
                [
                  -156.67992923219285,
                  71.27992386061969,
                  6.458773472120836
                ],
                [
                  -156.6934175200937,
                  71.27973964027758,
                  5.478773472120835
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2054.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2054.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:58:50Z",
            "pc:count": 3274926,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98649.32832,
                "count": 3274926,
                "maximum": -98408.56809,
                "minimum": -98904.40809,
                "name": "X",
                "position": 0,
                "stddev": 134.5453279,
                "variance": 18102.44526
              },
              {
                "average": 2366939.571,
                "count": 3274926,
                "maximum": 2367176.237,
                "minimum": 2366702.457,
                "name": "Y",
                "position": 1,
                "stddev": 129.9716764,
                "variance": 16892.63668
              },
              {
                "average": 5.793702417,
                "count": 3274926,
                "maximum": 6.458773472,
                "minimum": 5.478773472,
                "name": "Z",
                "position": 2,
                "stddev": 0.1418662868,
                "variance": 0.02012604332
              },
              {
                "average": 28834.75306,
                "count": 3274926,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 8787.587462,
                "variance": 77221693.41
              },
              {
                "average": 1,
                "count": 3274926,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3274926,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5028812865,
                "count": 3274926,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999917745,
                "variance": 0.2499917745
              },
              {
                "average": 0.0003795505608,
                "count": 3274926,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01947836282,
                "variance": 0.0003794066181
              },
              {
                "average": 1.285229651,
                "count": 3274926,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4515846792,
                "variance": 0.2039287225
              },
              {
                "average": 0.7587024528,
                "count": 3274926,
                "maximum": 16.46999931,
                "minimum": -19.45199966,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.35722237,
                "variance": 107.2720551
              },
              {
                "average": 0.5029157911,
                "count": 3274926,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999915744,
                "variance": 0.2499915745
              },
              {
                "average": 414.2496704,
                "count": 3274926,
                "maximum": 459,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.26604689,
                "variance": 1.602874728
              },
              {
                "average": 220419747,
                "count": 3274926,
                "maximum": 220723930.8,
                "minimum": 220418365,
                "name": "GpsTime",
                "position": 12,
                "stddev": 5816.072832,
                "variance": 33826703.19
              },
              {
                "average": 0.5029157911,
                "count": 3274926,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999915744,
                "variance": 0.2499915745
              },
              {
                "average": 0,
                "count": 3274926,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3274926,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3274926,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2305087199,
                "count": 3274926,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4211585261,
                "variance": 0.1773745041
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98904.40809,
              2366702.457,
              5.478773472,
              -98408.56809,
              2367176.237,
              6.458773472
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98904.40808598905,
                    2366702.4570439975,
                    5.478773472120835
                  ],
                  [
                    -98904.40808598905,
                    2367176.2370439977,
                    5.478773472120835
                  ],
                  [
                    -98408.56808598906,
                    2367176.2370439977,
                    6.458773472120836
                  ],
                  [
                    -98408.56808598906,
                    2366702.4570439975,
                    6.458773472120836
                  ],
                  [
                    -98904.40808598905,
                    2366702.4570439975,
                    5.478773472120835
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:58:50+00:00",
            "end_time": "2018-09-08T05:06:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2011.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79572686316624,
              71.2763238137747,
              -2.440737728874353
            ],
            [
              -156.7962694964642,
              71.28067036131881,
              -2.440737728874353
            ],
            [
              -156.7827847722588,
              71.28086158499939,
              26.599262271125646
            ],
            [
              -156.7822447496124,
              71.27651499477358,
              26.599262271125646
            ],
            [
              -156.79572686316624,
              71.2763238137747,
              -2.440737728874353
            ]
          ]
        ]
      },
      "bbox": [
        -156.7962695,
        71.27632381,
        -2.440737729,
        -156.7822447,
        71.28086158,
        26.59926227
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:44Z",
        "pc:count": 3370526,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102430.8753,
            "count": 3370526,
            "maximum": -102179.0377,
            "minimum": -102674.7577,
            "name": "X",
            "position": 0,
            "stddev": 133.1196371,
            "variance": 17720.83778
          },
          {
            "average": 2366718.097,
            "count": 3370526,
            "maximum": 2366959.781,
            "minimum": 2366486.201,
            "name": "Y",
            "position": 1,
            "stddev": 127.6928491,
            "variance": 16305.46371
          },
          {
            "average": 12.87233165,
            "count": 3370526,
            "maximum": 26.59926227,
            "minimum": -2.440737729,
            "name": "Z",
            "position": 2,
            "stddev": 0.8759505178,
            "variance": 0.7672893096
          },
          {
            "average": 36050.96853,
            "count": 3370526,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10779.45001,
            "variance": 116196542.4
          },
          {
            "average": 1.000806402,
            "count": 3370526,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02867694023,
            "variance": 0.0008223669008
          },
          {
            "average": 1.001616068,
            "count": 3370526,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0407835862,
            "variance": 0.001663300903
          },
          {
            "average": 0.5038851503,
            "count": 3370526,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999849795,
            "variance": 0.2499849798
          },
          {
            "average": 0.0004331668114,
            "count": 3370526,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0208081548,
            "variance": 0.0004329793063
          },
          {
            "average": 1.29578766,
            "count": 3370526,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5175859535,
            "variance": 0.2678952193
          },
          {
            "average": 0.4085364688,
            "count": 3370526,
            "maximum": 16.3560009,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59375904,
            "variance": 112.2277305
          },
          {
            "average": 0.524846567,
            "count": 3370526,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993823406,
            "variance": 0.2493827221
          },
          {
            "average": 408.3390358,
            "count": 3370526,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9491054716,
            "variance": 0.9008011963
          },
          {
            "average": 220416391.2,
            "count": 3370526,
            "maximum": 220417204,
            "minimum": 220414940.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 537.2336213,
            "variance": 288619.9639
          },
          {
            "average": 0.524846567,
            "count": 3370526,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993823406,
            "variance": 0.2493827221
          },
          {
            "average": 0,
            "count": 3370526,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3370526,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3370526,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2576170604,
            "count": 3370526,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4373220407,
            "variance": 0.1912505673
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102674.7577,
          2366486.201,
          -2.440737729,
          -102179.0377,
          2366959.781,
          26.59926227
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102674.75767725316,
                2366486.201287981,
                -2.440737728874353
              ],
              [
                -102674.75767725316,
                2366959.781287981,
                -2.440737728874353
              ],
              [
                -102179.03767725316,
                2366959.781287981,
                26.599262271125646
              ],
              [
                -102179.03767725316,
                2366486.201287981,
                26.599262271125646
              ],
              [
                -102674.75767725316,
                2366486.201287981,
                -2.440737728874353
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:44+00:00",
        "end_time": "2018-09-08T04:09:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2011.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2011.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2011.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2011.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7962695,
            71.27632381,
            -2.440737729,
            -156.7822447,
            71.28086158,
            26.59926227
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79572686316624,
                  71.2763238137747,
                  -2.440737728874353
                ],
                [
                  -156.7962694964642,
                  71.28067036131881,
                  -2.440737728874353
                ],
                [
                  -156.7827847722588,
                  71.28086158499939,
                  26.599262271125646
                ],
                [
                  -156.7822447496124,
                  71.27651499477358,
                  26.599262271125646
                ],
                [
                  -156.79572686316624,
                  71.2763238137747,
                  -2.440737728874353
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2011.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2011.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:44Z",
            "pc:count": 3370526,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102430.8753,
                "count": 3370526,
                "maximum": -102179.0377,
                "minimum": -102674.7577,
                "name": "X",
                "position": 0,
                "stddev": 133.1196371,
                "variance": 17720.83778
              },
              {
                "average": 2366718.097,
                "count": 3370526,
                "maximum": 2366959.781,
                "minimum": 2366486.201,
                "name": "Y",
                "position": 1,
                "stddev": 127.6928491,
                "variance": 16305.46371
              },
              {
                "average": 12.87233165,
                "count": 3370526,
                "maximum": 26.59926227,
                "minimum": -2.440737729,
                "name": "Z",
                "position": 2,
                "stddev": 0.8759505178,
                "variance": 0.7672893096
              },
              {
                "average": 36050.96853,
                "count": 3370526,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10779.45001,
                "variance": 116196542.4
              },
              {
                "average": 1.000806402,
                "count": 3370526,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02867694023,
                "variance": 0.0008223669008
              },
              {
                "average": 1.001616068,
                "count": 3370526,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0407835862,
                "variance": 0.001663300903
              },
              {
                "average": 0.5038851503,
                "count": 3370526,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999849795,
                "variance": 0.2499849798
              },
              {
                "average": 0.0004331668114,
                "count": 3370526,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0208081548,
                "variance": 0.0004329793063
              },
              {
                "average": 1.29578766,
                "count": 3370526,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5175859535,
                "variance": 0.2678952193
              },
              {
                "average": 0.4085364688,
                "count": 3370526,
                "maximum": 16.3560009,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59375904,
                "variance": 112.2277305
              },
              {
                "average": 0.524846567,
                "count": 3370526,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993823406,
                "variance": 0.2493827221
              },
              {
                "average": 408.3390358,
                "count": 3370526,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9491054716,
                "variance": 0.9008011963
              },
              {
                "average": 220416391.2,
                "count": 3370526,
                "maximum": 220417204,
                "minimum": 220414940.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 537.2336213,
                "variance": 288619.9639
              },
              {
                "average": 0.524846567,
                "count": 3370526,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993823406,
                "variance": 0.2493827221
              },
              {
                "average": 0,
                "count": 3370526,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3370526,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3370526,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2576170604,
                "count": 3370526,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4373220407,
                "variance": 0.1912505673
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102674.7577,
              2366486.201,
              -2.440737729,
              -102179.0377,
              2366959.781,
              26.59926227
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102674.75767725316,
                    2366486.201287981,
                    -2.440737728874353
                  ],
                  [
                    -102674.75767725316,
                    2366959.781287981,
                    -2.440737728874353
                  ],
                  [
                    -102179.03767725316,
                    2366959.781287981,
                    26.599262271125646
                  ],
                  [
                    -102179.03767725316,
                    2366486.201287981,
                    26.599262271125646
                  ],
                  [
                    -102674.75767725316,
                    2366486.201287981,
                    -2.440737728874353
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:44+00:00",
            "end_time": "2018-09-08T04:09:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1565.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.810736967146,
              71.23953124934832,
              10.402063015777028
            ],
            [
              -156.81128182469465,
              71.24387833416834,
              10.402063015777028
            ],
            [
              -156.79782313826533,
              71.24407048547864,
              72.56206301577703
            ],
            [
              -156.79728088297034,
              71.23972335785547,
              72.56206301577703
            ],
            [
              -156.810736967146,
              71.23953124934832,
              10.402063015777028
            ]
          ]
        ]
      },
      "bbox": [
        -156.8112818,
        71.23953125,
        10.40206302,
        -156.7972809,
        71.24407049,
        72.56206302
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:08Z",
        "pc:count": 4017667,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103150.015,
            "count": 4017667,
            "maximum": -102899.5906,
            "minimum": -103395.1706,
            "name": "X",
            "position": 0,
            "stddev": 131.8359634,
            "variance": 17380.72126
          },
          {
            "average": 2362749.11,
            "count": 4017667,
            "maximum": 2362981.066,
            "minimum": 2362507.306,
            "name": "Y",
            "position": 1,
            "stddev": 131.5384185,
            "variance": 17302.35555
          },
          {
            "average": 11.80327194,
            "count": 4017667,
            "maximum": 72.56206302,
            "minimum": 10.40206302,
            "name": "Z",
            "position": 2,
            "stddev": 0.89946216,
            "variance": 0.8090321773
          },
          {
            "average": 41303.41033,
            "count": 4017667,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12580.59303,
            "variance": 158271321.1
          },
          {
            "average": 1,
            "count": 4017667,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.000000996,
            "count": 4017667,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.000997798541,
            "variance": 9.956019285e-07
          },
          {
            "average": 0.4923123295,
            "count": 4017667,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999409584,
            "variance": 0.2499409619
          },
          {
            "average": 0.0004761469778,
            "count": 4017667,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02181559947,
            "variance": 0.0004759203803
          },
          {
            "average": 1.280908298,
            "count": 4017667,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5960845143,
            "variance": 0.3553167481
          },
          {
            "average": 3.471321845,
            "count": 4017667,
            "maximum": 20.76600075,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.66835395,
            "variance": 113.813776
          },
          {
            "average": 0.4662315219,
            "count": 4017667,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988584487,
            "variance": 0.2488597518
          },
          {
            "average": 427.8466986,
            "count": 4017667,
            "maximum": 466,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.59708607,
            "variance": 466.4341266
          },
          {
            "average": 220495919,
            "count": 4017667,
            "maximum": 220726528.7,
            "minimum": 220419334.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 132004.8096,
            "variance": 17425269760.0
          },
          {
            "average": 0.4662315219,
            "count": 4017667,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988584487,
            "variance": 0.2488597518
          },
          {
            "average": 0,
            "count": 4017667,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4017667,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4017667,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2186052254,
            "count": 4017667,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4133001613,
            "variance": 0.1708170233
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103395.1706,
          2362507.306,
          10.40206302,
          -102899.5906,
          2362981.066,
          72.56206302
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103395.17062196079,
                2362507.305907011,
                10.402063015777028
              ],
              [
                -103395.17062196079,
                2362981.065907011,
                10.402063015777028
              ],
              [
                -102899.5906219608,
                2362981.065907011,
                72.56206301577703
              ],
              [
                -102899.5906219608,
                2362507.305907011,
                72.56206301577703
              ],
              [
                -103395.17062196079,
                2362507.305907011,
                10.402063015777028
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:08+00:00",
        "end_time": "2018-09-08T05:22:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1565.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1565.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1565.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1565.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8112818,
            71.23953125,
            10.40206302,
            -156.7972809,
            71.24407049,
            72.56206302
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.810736967146,
                  71.23953124934832,
                  10.402063015777028
                ],
                [
                  -156.81128182469465,
                  71.24387833416834,
                  10.402063015777028
                ],
                [
                  -156.79782313826533,
                  71.24407048547864,
                  72.56206301577703
                ],
                [
                  -156.79728088297034,
                  71.23972335785547,
                  72.56206301577703
                ],
                [
                  -156.810736967146,
                  71.23953124934832,
                  10.402063015777028
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1565.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1565.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:08Z",
            "pc:count": 4017667,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103150.015,
                "count": 4017667,
                "maximum": -102899.5906,
                "minimum": -103395.1706,
                "name": "X",
                "position": 0,
                "stddev": 131.8359634,
                "variance": 17380.72126
              },
              {
                "average": 2362749.11,
                "count": 4017667,
                "maximum": 2362981.066,
                "minimum": 2362507.306,
                "name": "Y",
                "position": 1,
                "stddev": 131.5384185,
                "variance": 17302.35555
              },
              {
                "average": 11.80327194,
                "count": 4017667,
                "maximum": 72.56206302,
                "minimum": 10.40206302,
                "name": "Z",
                "position": 2,
                "stddev": 0.89946216,
                "variance": 0.8090321773
              },
              {
                "average": 41303.41033,
                "count": 4017667,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12580.59303,
                "variance": 158271321.1
              },
              {
                "average": 1,
                "count": 4017667,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.000000996,
                "count": 4017667,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.000997798541,
                "variance": 9.956019285e-07
              },
              {
                "average": 0.4923123295,
                "count": 4017667,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999409584,
                "variance": 0.2499409619
              },
              {
                "average": 0.0004761469778,
                "count": 4017667,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02181559947,
                "variance": 0.0004759203803
              },
              {
                "average": 1.280908298,
                "count": 4017667,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5960845143,
                "variance": 0.3553167481
              },
              {
                "average": 3.471321845,
                "count": 4017667,
                "maximum": 20.76600075,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.66835395,
                "variance": 113.813776
              },
              {
                "average": 0.4662315219,
                "count": 4017667,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988584487,
                "variance": 0.2488597518
              },
              {
                "average": 427.8466986,
                "count": 4017667,
                "maximum": 466,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.59708607,
                "variance": 466.4341266
              },
              {
                "average": 220495919,
                "count": 4017667,
                "maximum": 220726528.7,
                "minimum": 220419334.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 132004.8096,
                "variance": 17425269760.0
              },
              {
                "average": 0.4662315219,
                "count": 4017667,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988584487,
                "variance": 0.2488597518
              },
              {
                "average": 0,
                "count": 4017667,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4017667,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4017667,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2186052254,
                "count": 4017667,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4133001613,
                "variance": 0.1708170233
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103395.1706,
              2362507.306,
              10.40206302,
              -102899.5906,
              2362981.066,
              72.56206302
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103395.17062196079,
                    2362507.305907011,
                    10.402063015777028
                  ],
                  [
                    -103395.17062196079,
                    2362981.065907011,
                    10.402063015777028
                  ],
                  [
                    -102899.5906219608,
                    2362981.065907011,
                    72.56206301577703
                  ],
                  [
                    -102899.5906219608,
                    2362507.305907011,
                    72.56206301577703
                  ],
                  [
                    -103395.17062196079,
                    2362507.305907011,
                    10.402063015777028
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:08+00:00",
            "end_time": "2018-09-08T05:22:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1621.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78502040779105,
              71.24346567519862,
              9.456629040996534
            ],
            [
              -156.78556024104012,
              71.24781184425134,
              9.456629040996534
            ],
            [
              -156.7721016924389,
              71.24800220090097,
              30.516629040996534
            ],
            [
              -156.77156446134123,
              71.2436559894442,
              30.516629040996534
            ],
            [
              -156.78502040779105,
              71.24346567519862,
              9.456629040996534
            ]
          ]
        ]
      },
      "bbox": [
        -156.7855602,
        71.24346568,
        9.456629041,
        -156.7715645,
        71.2480022,
        30.51662904
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:21Z",
        "pc:count": 2133507,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102180.1322,
            "count": 2133507,
            "maximum": -101936.2836,
            "minimum": -102431.7636,
            "name": "X",
            "position": 0,
            "stddev": 137.8260623,
            "variance": 18996.02344
          },
          {
            "average": 2363136.933,
            "count": 2133507,
            "maximum": 2363369.118,
            "minimum": 2362895.478,
            "name": "Y",
            "position": 1,
            "stddev": 126.4867061,
            "variance": 15998.88682
          },
          {
            "average": 9.675716187,
            "count": 2133507,
            "maximum": 30.51662904,
            "minimum": 9.456629041,
            "name": "Z",
            "position": 2,
            "stddev": 0.04664407558,
            "variance": 0.002175669787
          },
          {
            "average": 18181.55426,
            "count": 2133507,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14130.08834,
            "variance": 199659396.5
          },
          {
            "average": 1.000000469,
            "count": 2133507,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006846253311,
            "variance": 4.687118439e-07
          },
          {
            "average": 1.000000937,
            "count": 2133507,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009682062014,
            "variance": 9.374232485e-07
          },
          {
            "average": 0.5088410772,
            "count": 2133507,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999219464,
            "variance": 0.2499219525
          },
          {
            "average": 0.000708692308,
            "count": 2133507,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0266118469,
            "variance": 0.0007081903952
          },
          {
            "average": 8.247552504,
            "count": 2133507,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.940084285,
            "variance": 3.763927032
          },
          {
            "average": -2.705604451,
            "count": 2133507,
            "maximum": 20.60400009,
            "minimum": -19.64999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.34833612,
            "variance": 40.3013715
          },
          {
            "average": 0.4878755964,
            "count": 2133507,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998530944,
            "variance": 0.2498531159
          },
          {
            "average": 428.8653991,
            "count": 2133507,
            "maximum": 466,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.27001329,
            "variance": 452.4134652
          },
          {
            "average": 220499541.5,
            "count": 2133507,
            "maximum": 220726541.2,
            "minimum": 220420180.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 133623.5846,
            "variance": 17855262370.0
          },
          {
            "average": 0.4878755964,
            "count": 2133507,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998530944,
            "variance": 0.2498531159
          },
          {
            "average": 0,
            "count": 2133507,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2133507,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2133507,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0265464327,
            "count": 2133507,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1607536367,
            "variance": 0.02584173173
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102431.7636,
          2362895.478,
          9.456629041,
          -101936.2836,
          2363369.118,
          30.51662904
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102431.76363269296,
                2362895.4778480097,
                9.456629040996534
              ],
              [
                -102431.76363269296,
                2363369.1178480093,
                9.456629040996534
              ],
              [
                -101936.28363269295,
                2363369.1178480093,
                30.516629040996534
              ],
              [
                -101936.28363269295,
                2362895.4778480097,
                30.516629040996534
              ],
              [
                -102431.76363269296,
                2362895.4778480097,
                9.456629040996534
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:21+00:00",
        "end_time": "2018-09-08T05:36:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1621.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1621.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1621.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1621.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7855602,
            71.24346568,
            9.456629041,
            -156.7715645,
            71.2480022,
            30.51662904
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78502040779105,
                  71.24346567519862,
                  9.456629040996534
                ],
                [
                  -156.78556024104012,
                  71.24781184425134,
                  9.456629040996534
                ],
                [
                  -156.7721016924389,
                  71.24800220090097,
                  30.516629040996534
                ],
                [
                  -156.77156446134123,
                  71.2436559894442,
                  30.516629040996534
                ],
                [
                  -156.78502040779105,
                  71.24346567519862,
                  9.456629040996534
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1621.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1621.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:21Z",
            "pc:count": 2133507,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102180.1322,
                "count": 2133507,
                "maximum": -101936.2836,
                "minimum": -102431.7636,
                "name": "X",
                "position": 0,
                "stddev": 137.8260623,
                "variance": 18996.02344
              },
              {
                "average": 2363136.933,
                "count": 2133507,
                "maximum": 2363369.118,
                "minimum": 2362895.478,
                "name": "Y",
                "position": 1,
                "stddev": 126.4867061,
                "variance": 15998.88682
              },
              {
                "average": 9.675716187,
                "count": 2133507,
                "maximum": 30.51662904,
                "minimum": 9.456629041,
                "name": "Z",
                "position": 2,
                "stddev": 0.04664407558,
                "variance": 0.002175669787
              },
              {
                "average": 18181.55426,
                "count": 2133507,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14130.08834,
                "variance": 199659396.5
              },
              {
                "average": 1.000000469,
                "count": 2133507,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006846253311,
                "variance": 4.687118439e-07
              },
              {
                "average": 1.000000937,
                "count": 2133507,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009682062014,
                "variance": 9.374232485e-07
              },
              {
                "average": 0.5088410772,
                "count": 2133507,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999219464,
                "variance": 0.2499219525
              },
              {
                "average": 0.000708692308,
                "count": 2133507,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0266118469,
                "variance": 0.0007081903952
              },
              {
                "average": 8.247552504,
                "count": 2133507,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.940084285,
                "variance": 3.763927032
              },
              {
                "average": -2.705604451,
                "count": 2133507,
                "maximum": 20.60400009,
                "minimum": -19.64999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.34833612,
                "variance": 40.3013715
              },
              {
                "average": 0.4878755964,
                "count": 2133507,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998530944,
                "variance": 0.2498531159
              },
              {
                "average": 428.8653991,
                "count": 2133507,
                "maximum": 466,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.27001329,
                "variance": 452.4134652
              },
              {
                "average": 220499541.5,
                "count": 2133507,
                "maximum": 220726541.2,
                "minimum": 220420180.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 133623.5846,
                "variance": 17855262370.0
              },
              {
                "average": 0.4878755964,
                "count": 2133507,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998530944,
                "variance": 0.2498531159
              },
              {
                "average": 0,
                "count": 2133507,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2133507,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2133507,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0265464327,
                "count": 2133507,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1607536367,
                "variance": 0.02584173173
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102431.7636,
              2362895.478,
              9.456629041,
              -101936.2836,
              2363369.118,
              30.51662904
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102431.76363269296,
                    2362895.4778480097,
                    9.456629040996534
                  ],
                  [
                    -102431.76363269296,
                    2363369.1178480093,
                    9.456629040996534
                  ],
                  [
                    -101936.28363269295,
                    2363369.1178480093,
                    30.516629040996534
                  ],
                  [
                    -101936.28363269295,
                    2362895.4778480097,
                    30.516629040996534
                  ],
                  [
                    -102431.76363269296,
                    2362895.4778480097,
                    9.456629040996534
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:21+00:00",
            "end_time": "2018-09-08T05:36:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1936.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.770735426326,
              71.2679644498267,
              10.791132748792712
            ],
            [
              -156.77127310203707,
              71.27231155575635,
              10.791132748792712
            ],
            [
              -156.7577953700572,
              71.27250102590915,
              16.99113274879271
            ],
            [
              -156.75726030323509,
              71.2681538777042,
              16.99113274879271
            ],
            [
              -156.770735426326,
              71.2679644498267,
              10.791132748792712
            ]
          ]
        ]
      },
      "bbox": [
        -156.7712731,
        71.26796445,
        10.79113275,
        -156.7572603,
        71.27250103,
        16.99113275
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:16Z",
        "pc:count": 3101898,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101547.758,
            "count": 3101898,
            "maximum": -101299.7834,
            "minimum": -101795.4234,
            "name": "X",
            "position": 0,
            "stddev": 135.9707541,
            "variance": 18488.04598
          },
          {
            "average": 2365773.701,
            "count": 3101898,
            "maximum": 2366012.158,
            "minimum": 2365538.498,
            "name": "Y",
            "position": 1,
            "stddev": 129.8224392,
            "variance": 16853.86571
          },
          {
            "average": 13.28482675,
            "count": 3101898,
            "maximum": 16.99113275,
            "minimum": 10.79113275,
            "name": "Z",
            "position": 2,
            "stddev": 0.7471284132,
            "variance": 0.5582008658
          },
          {
            "average": 44946.3156,
            "count": 3101898,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9335.137846,
            "variance": 87144798.6
          },
          {
            "average": 1.000063187,
            "count": 3101898,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007948782761,
            "variance": 6.318314739e-05
          },
          {
            "average": 1.000126374,
            "count": 3101898,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01124092121,
            "variance": 0.0001263583095
          },
          {
            "average": 0.5002962702,
            "count": 3101898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999928,
            "variance": 0.2499999928
          },
          {
            "average": 0.0004523037186,
            "count": 3101898,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0212626265,
            "variance": 0.0004520992857
          },
          {
            "average": 1.328979225,
            "count": 3101898,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4712039019,
            "variance": 0.2220331172
          },
          {
            "average": -0.6229841796,
            "count": 3101898,
            "maximum": 16.37999916,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38953922,
            "variance": 107.9425253
          },
          {
            "average": 0.476069168,
            "count": 3101898,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994270674,
            "variance": 0.2494273957
          },
          {
            "average": 411.8137247,
            "count": 3101898,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9430705967,
            "variance": 0.8893821504
          },
          {
            "average": 220418332.4,
            "count": 3101898,
            "maximum": 220419396.5,
            "minimum": 220417195.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 546.2676285,
            "variance": 298408.322
          },
          {
            "average": 0.476069168,
            "count": 3101898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994270674,
            "variance": 0.2494273957
          },
          {
            "average": 0,
            "count": 3101898,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3101898,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3101898,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2321823606,
            "count": 3101898,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4222247855,
            "variance": 0.1782737695
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101795.4234,
          2365538.498,
          10.79113275,
          -101299.7834,
          2366012.158,
          16.99113275
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101795.42341030453,
                2365538.4978068145,
                10.791132748792712
              ],
              [
                -101795.42341030453,
                2366012.1578068146,
                10.791132748792712
              ],
              [
                -101299.78341030452,
                2366012.1578068146,
                16.99113274879271
              ],
              [
                -101299.78341030452,
                2365538.4978068145,
                16.99113274879271
              ],
              [
                -101795.42341030453,
                2365538.4978068145,
                10.791132748792712
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:16+00:00",
        "end_time": "2018-09-08T04:46:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1936.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1936.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1936.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1936.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7712731,
            71.26796445,
            10.79113275,
            -156.7572603,
            71.27250103,
            16.99113275
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.770735426326,
                  71.2679644498267,
                  10.791132748792712
                ],
                [
                  -156.77127310203707,
                  71.27231155575635,
                  10.791132748792712
                ],
                [
                  -156.7577953700572,
                  71.27250102590915,
                  16.99113274879271
                ],
                [
                  -156.75726030323509,
                  71.2681538777042,
                  16.99113274879271
                ],
                [
                  -156.770735426326,
                  71.2679644498267,
                  10.791132748792712
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1936.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1936.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:16Z",
            "pc:count": 3101898,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101547.758,
                "count": 3101898,
                "maximum": -101299.7834,
                "minimum": -101795.4234,
                "name": "X",
                "position": 0,
                "stddev": 135.9707541,
                "variance": 18488.04598
              },
              {
                "average": 2365773.701,
                "count": 3101898,
                "maximum": 2366012.158,
                "minimum": 2365538.498,
                "name": "Y",
                "position": 1,
                "stddev": 129.8224392,
                "variance": 16853.86571
              },
              {
                "average": 13.28482675,
                "count": 3101898,
                "maximum": 16.99113275,
                "minimum": 10.79113275,
                "name": "Z",
                "position": 2,
                "stddev": 0.7471284132,
                "variance": 0.5582008658
              },
              {
                "average": 44946.3156,
                "count": 3101898,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9335.137846,
                "variance": 87144798.6
              },
              {
                "average": 1.000063187,
                "count": 3101898,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007948782761,
                "variance": 6.318314739e-05
              },
              {
                "average": 1.000126374,
                "count": 3101898,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01124092121,
                "variance": 0.0001263583095
              },
              {
                "average": 0.5002962702,
                "count": 3101898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999928,
                "variance": 0.2499999928
              },
              {
                "average": 0.0004523037186,
                "count": 3101898,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0212626265,
                "variance": 0.0004520992857
              },
              {
                "average": 1.328979225,
                "count": 3101898,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4712039019,
                "variance": 0.2220331172
              },
              {
                "average": -0.6229841796,
                "count": 3101898,
                "maximum": 16.37999916,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38953922,
                "variance": 107.9425253
              },
              {
                "average": 0.476069168,
                "count": 3101898,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994270674,
                "variance": 0.2494273957
              },
              {
                "average": 411.8137247,
                "count": 3101898,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9430705967,
                "variance": 0.8893821504
              },
              {
                "average": 220418332.4,
                "count": 3101898,
                "maximum": 220419396.5,
                "minimum": 220417195.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 546.2676285,
                "variance": 298408.322
              },
              {
                "average": 0.476069168,
                "count": 3101898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994270674,
                "variance": 0.2494273957
              },
              {
                "average": 0,
                "count": 3101898,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3101898,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3101898,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2321823606,
                "count": 3101898,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4222247855,
                "variance": 0.1782737695
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101795.4234,
              2365538.498,
              10.79113275,
              -101299.7834,
              2366012.158,
              16.99113275
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101795.42341030453,
                    2365538.4978068145,
                    10.791132748792712
                  ],
                  [
                    -101795.42341030453,
                    2366012.1578068146,
                    10.791132748792712
                  ],
                  [
                    -101299.78341030452,
                    2366012.1578068146,
                    16.99113274879271
                  ],
                  [
                    -101299.78341030452,
                    2365538.4978068145,
                    16.99113274879271
                  ],
                  [
                    -101795.42341030453,
                    2365538.4978068145,
                    10.791132748792712
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:16+00:00",
            "end_time": "2018-09-08T04:46:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1891.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69451913588188,
              71.26335221330275,
              9.374738643215187
            ],
            [
              -156.69504201039615,
              71.26770012418525,
              9.374738643215187
            ],
            [
              -156.68156369806513,
              71.26788440409562,
              13.314738643215188
            ],
            [
              -156.68104343282556,
              71.26353645209925,
              13.314738643215188
            ],
            [
              -156.69451913588188,
              71.26335221330275,
              9.374738643215187
            ]
          ]
        ]
      },
      "bbox": [
        -156.695042,
        71.26335221,
        9.374738643,
        -156.6810434,
        71.2678844,
        13.31473864
      ],
      "properties": {
        "datetime": "2018-09-11T18:13:33Z",
        "pc:count": 4092669,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98764.84647,
            "count": 4092669,
            "maximum": -98521.46111,
            "minimum": -99017.20111,
            "name": "X",
            "position": 0,
            "stddev": 135.0652786,
            "variance": 18242.62948
          },
          {
            "average": 2365150.393,
            "count": 4092669,
            "maximum": 2365395.306,
            "minimum": 2364921.566,
            "name": "Y",
            "position": 1,
            "stddev": 126.0525281,
            "variance": 15889.23984
          },
          {
            "average": 10.71654751,
            "count": 4092669,
            "maximum": 13.31473864,
            "minimum": 9.374738643,
            "name": "Z",
            "position": 2,
            "stddev": 1.099433052,
            "variance": 1.208753036
          },
          {
            "average": 40910.29638,
            "count": 4092669,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10269.9928,
            "variance": 105472752.1
          },
          {
            "average": 1.00085079,
            "count": 4092669,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02915588981,
            "variance": 0.0008500659107
          },
          {
            "average": 1.00170109,
            "count": 4092669,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04120918732,
            "variance": 0.001698197119
          },
          {
            "average": 0.4960694354,
            "count": 4092669,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999846115,
            "variance": 0.2499846117
          },
          {
            "average": 0.0004537381352,
            "count": 4092669,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02129629939,
            "variance": 0.0004535323677
          },
          {
            "average": 1.277909599,
            "count": 4092669,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4556743208,
            "variance": 0.2076390867
          },
          {
            "average": 2.474444661,
            "count": 4092669,
            "maximum": 20.56200027,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.27403444,
            "variance": 127.1038525
          },
          {
            "average": 0.488975776,
            "count": 4092669,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998785128,
            "variance": 0.2498785275
          },
          {
            "average": 428.8613604,
            "count": 4092669,
            "maximum": 462,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.95185732,
            "variance": 359.1728958
          },
          {
            "average": 220497989.2,
            "count": 4092669,
            "maximum": 220724813.5,
            "minimum": 220420513.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 131574.8522,
            "variance": 17311941730.0
          },
          {
            "average": 0.488975776,
            "count": 4092669,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998785128,
            "variance": 0.2498785275
          },
          {
            "average": 0,
            "count": 4092669,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4092669,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4092669,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2331857279,
            "count": 4092669,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4228595369,
            "variance": 0.1788101879
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99017.20111,
          2364921.566,
          9.374738643,
          -98521.46111,
          2365395.306,
          13.31473864
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99017.20111350378,
                2364921.565654966,
                9.374738643215187
              ],
              [
                -99017.20111350378,
                2365395.3056549663,
                9.374738643215187
              ],
              [
                -98521.46111350378,
                2365395.3056549663,
                13.314738643215188
              ],
              [
                -98521.46111350378,
                2364921.565654966,
                13.314738643215188
              ],
              [
                -99017.20111350378,
                2364921.565654966,
                9.374738643215187
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:13:33+00:00",
        "end_time": "2018-09-08T05:41:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1891.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1891.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1891.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1891.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.695042,
            71.26335221,
            9.374738643,
            -156.6810434,
            71.2678844,
            13.31473864
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69451913588188,
                  71.26335221330275,
                  9.374738643215187
                ],
                [
                  -156.69504201039615,
                  71.26770012418525,
                  9.374738643215187
                ],
                [
                  -156.68156369806513,
                  71.26788440409562,
                  13.314738643215188
                ],
                [
                  -156.68104343282556,
                  71.26353645209925,
                  13.314738643215188
                ],
                [
                  -156.69451913588188,
                  71.26335221330275,
                  9.374738643215187
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1891.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1891.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:13:33Z",
            "pc:count": 4092669,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98764.84647,
                "count": 4092669,
                "maximum": -98521.46111,
                "minimum": -99017.20111,
                "name": "X",
                "position": 0,
                "stddev": 135.0652786,
                "variance": 18242.62948
              },
              {
                "average": 2365150.393,
                "count": 4092669,
                "maximum": 2365395.306,
                "minimum": 2364921.566,
                "name": "Y",
                "position": 1,
                "stddev": 126.0525281,
                "variance": 15889.23984
              },
              {
                "average": 10.71654751,
                "count": 4092669,
                "maximum": 13.31473864,
                "minimum": 9.374738643,
                "name": "Z",
                "position": 2,
                "stddev": 1.099433052,
                "variance": 1.208753036
              },
              {
                "average": 40910.29638,
                "count": 4092669,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10269.9928,
                "variance": 105472752.1
              },
              {
                "average": 1.00085079,
                "count": 4092669,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02915588981,
                "variance": 0.0008500659107
              },
              {
                "average": 1.00170109,
                "count": 4092669,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04120918732,
                "variance": 0.001698197119
              },
              {
                "average": 0.4960694354,
                "count": 4092669,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999846115,
                "variance": 0.2499846117
              },
              {
                "average": 0.0004537381352,
                "count": 4092669,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02129629939,
                "variance": 0.0004535323677
              },
              {
                "average": 1.277909599,
                "count": 4092669,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4556743208,
                "variance": 0.2076390867
              },
              {
                "average": 2.474444661,
                "count": 4092669,
                "maximum": 20.56200027,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.27403444,
                "variance": 127.1038525
              },
              {
                "average": 0.488975776,
                "count": 4092669,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998785128,
                "variance": 0.2498785275
              },
              {
                "average": 428.8613604,
                "count": 4092669,
                "maximum": 462,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.95185732,
                "variance": 359.1728958
              },
              {
                "average": 220497989.2,
                "count": 4092669,
                "maximum": 220724813.5,
                "minimum": 220420513.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 131574.8522,
                "variance": 17311941730.0
              },
              {
                "average": 0.488975776,
                "count": 4092669,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998785128,
                "variance": 0.2498785275
              },
              {
                "average": 0,
                "count": 4092669,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4092669,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4092669,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2331857279,
                "count": 4092669,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4228595369,
                "variance": 0.1788101879
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99017.20111,
              2364921.566,
              9.374738643,
              -98521.46111,
              2365395.306,
              13.31473864
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99017.20111350378,
                    2364921.565654966,
                    9.374738643215187
                  ],
                  [
                    -99017.20111350378,
                    2365395.3056549663,
                    9.374738643215187
                  ],
                  [
                    -98521.46111350378,
                    2365395.3056549663,
                    13.314738643215188
                  ],
                  [
                    -98521.46111350378,
                    2364921.565654966,
                    13.314738643215188
                  ],
                  [
                    -99017.20111350378,
                    2364921.565654966,
                    9.374738643215187
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:13:33+00:00",
            "end_time": "2018-09-08T05:41:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2116.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7311534922316,
              71.28819525155927,
              3.739969842610746
            ],
            [
              -156.73168403720962,
              71.2925436080498,
              3.739969842610746
            ],
            [
              -156.71818998739013,
              71.29273044412032,
              9.999969842610746
            ],
            [
              -156.71766205734366,
              71.28838204588155,
              9.999969842610746
            ],
            [
              -156.7311534922316,
              71.28819525155927,
              3.739969842610746
            ]
          ]
        ]
      },
      "bbox": [
        -156.731684,
        71.28819525,
        3.739969843,
        -156.7176621,
        71.29273044,
        9.999969843
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:01Z",
        "pc:count": 2780253,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99999.36172,
            "count": 2780253,
            "maximum": -99755.70458,
            "minimum": -100251.4846,
            "name": "X",
            "position": 0,
            "stddev": 130.7747224,
            "variance": 17102.02802
          },
          {
            "average": 2367904.826,
            "count": 2780253,
            "maximum": 2368152.426,
            "minimum": 2367678.706,
            "name": "Y",
            "position": 1,
            "stddev": 127.6326757,
            "variance": 16290.09992
          },
          {
            "average": 6.83397933,
            "count": 2780253,
            "maximum": 9.999969843,
            "minimum": 3.739969843,
            "name": "Z",
            "position": 2,
            "stddev": 1.288236285,
            "variance": 1.659552727
          },
          {
            "average": 44479.39518,
            "count": 2780253,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10479.49388,
            "variance": 109819792
          },
          {
            "average": 1.00080856,
            "count": 2780253,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02861287157,
            "variance": 0.0008186964197
          },
          {
            "average": 1.001617119,
            "count": 2780253,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04058171621,
            "variance": 0.001646875691
          },
          {
            "average": 0.4996322277,
            "count": 2780253,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999547,
            "variance": 0.2499999547
          },
          {
            "average": 0.0003956474465,
            "count": 2780253,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01988695683,
            "variance": 0.0003954910518
          },
          {
            "average": 1.528212001,
            "count": 2780253,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.345820865,
            "variance": 1.811233802
          },
          {
            "average": 0.3638628155,
            "count": 2780253,
            "maximum": 16.31399918,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.2730796,
            "variance": 105.5361644
          },
          {
            "average": 0.4895349452,
            "count": 2780253,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998905605,
            "variance": 0.2498905725
          },
          {
            "average": 409.9108373,
            "count": 2780253,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8985200764,
            "variance": 0.8073383277
          },
          {
            "average": 220417273.9,
            "count": 2780253,
            "maximum": 220418361.7,
            "minimum": 220416106.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 508.1262723,
            "variance": 258192.3086
          },
          {
            "average": 0.4895349452,
            "count": 2780253,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998905605,
            "variance": 0.2498905725
          },
          {
            "average": 0,
            "count": 2780253,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2780253,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2780253,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2179952688,
            "count": 2780253,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4128842367,
            "variance": 0.1704733929
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100251.4846,
          2367678.706,
          3.739969843,
          -99755.70458,
          2368152.426,
          9.999969843
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100251.48457501708,
                2367678.7061070935,
                3.739969842610746
              ],
              [
                -100251.48457501708,
                2368152.426107093,
                3.739969842610746
              ],
              [
                -99755.70457501708,
                2368152.426107093,
                9.999969842610746
              ],
              [
                -99755.70457501708,
                2367678.7061070935,
                9.999969842610746
              ],
              [
                -100251.48457501708,
                2367678.7061070935,
                3.739969842610746
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:01+00:00",
        "end_time": "2018-09-08T04:28:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2116.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2116.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2116.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2116.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.731684,
            71.28819525,
            3.739969843,
            -156.7176621,
            71.29273044,
            9.999969843
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7311534922316,
                  71.28819525155927,
                  3.739969842610746
                ],
                [
                  -156.73168403720962,
                  71.2925436080498,
                  3.739969842610746
                ],
                [
                  -156.71818998739013,
                  71.29273044412032,
                  9.999969842610746
                ],
                [
                  -156.71766205734366,
                  71.28838204588155,
                  9.999969842610746
                ],
                [
                  -156.7311534922316,
                  71.28819525155927,
                  3.739969842610746
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2116.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2116.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:01Z",
            "pc:count": 2780253,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99999.36172,
                "count": 2780253,
                "maximum": -99755.70458,
                "minimum": -100251.4846,
                "name": "X",
                "position": 0,
                "stddev": 130.7747224,
                "variance": 17102.02802
              },
              {
                "average": 2367904.826,
                "count": 2780253,
                "maximum": 2368152.426,
                "minimum": 2367678.706,
                "name": "Y",
                "position": 1,
                "stddev": 127.6326757,
                "variance": 16290.09992
              },
              {
                "average": 6.83397933,
                "count": 2780253,
                "maximum": 9.999969843,
                "minimum": 3.739969843,
                "name": "Z",
                "position": 2,
                "stddev": 1.288236285,
                "variance": 1.659552727
              },
              {
                "average": 44479.39518,
                "count": 2780253,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10479.49388,
                "variance": 109819792
              },
              {
                "average": 1.00080856,
                "count": 2780253,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02861287157,
                "variance": 0.0008186964197
              },
              {
                "average": 1.001617119,
                "count": 2780253,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04058171621,
                "variance": 0.001646875691
              },
              {
                "average": 0.4996322277,
                "count": 2780253,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999547,
                "variance": 0.2499999547
              },
              {
                "average": 0.0003956474465,
                "count": 2780253,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01988695683,
                "variance": 0.0003954910518
              },
              {
                "average": 1.528212001,
                "count": 2780253,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.345820865,
                "variance": 1.811233802
              },
              {
                "average": 0.3638628155,
                "count": 2780253,
                "maximum": 16.31399918,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.2730796,
                "variance": 105.5361644
              },
              {
                "average": 0.4895349452,
                "count": 2780253,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998905605,
                "variance": 0.2498905725
              },
              {
                "average": 409.9108373,
                "count": 2780253,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8985200764,
                "variance": 0.8073383277
              },
              {
                "average": 220417273.9,
                "count": 2780253,
                "maximum": 220418361.7,
                "minimum": 220416106.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 508.1262723,
                "variance": 258192.3086
              },
              {
                "average": 0.4895349452,
                "count": 2780253,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998905605,
                "variance": 0.2498905725
              },
              {
                "average": 0,
                "count": 2780253,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2780253,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2780253,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2179952688,
                "count": 2780253,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4128842367,
                "variance": 0.1704733929
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100251.4846,
              2367678.706,
              3.739969843,
              -99755.70458,
              2368152.426,
              9.999969843
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100251.48457501708,
                    2367678.7061070935,
                    3.739969842610746
                  ],
                  [
                    -100251.48457501708,
                    2368152.426107093,
                    3.739969842610746
                  ],
                  [
                    -99755.70457501708,
                    2368152.426107093,
                    9.999969842610746
                  ],
                  [
                    -99755.70457501708,
                    2367678.7061070935,
                    9.999969842610746
                  ],
                  [
                    -100251.48457501708,
                    2367678.7061070935,
                    3.739969842610746
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:01+00:00",
            "end_time": "2018-09-08T04:28:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2012.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78297244239684,
              71.27624246630194,
              9.725118041993714
            ],
            [
              -156.78351259963299,
              71.28058904655474,
              9.725118041993714
            ],
            [
              -156.770026727902,
              71.2807794114689,
              13.825118041993715
            ],
            [
              -156.7694891815933,
              71.27643278872597,
              13.825118041993715
            ],
            [
              -156.78297244239684,
              71.27624246630194,
              9.725118041993714
            ]
          ]
        ]
      },
      "bbox": [
        -156.7835126,
        71.27624247,
        9.725118042,
        -156.7694892,
        71.28077941,
        13.82511804
      ],
      "properties": {
        "datetime": "2018-09-08T04:59:33Z",
        "pc:count": 2821213,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101963.9224,
            "count": 2821213,
            "maximum": -101711.2297,
            "minimum": -102206.9897,
            "name": "X",
            "position": 0,
            "stddev": 135.8790094,
            "variance": 18463.10519
          },
          {
            "average": 2366695.745,
            "count": 2821213,
            "maximum": 2366931.26,
            "minimum": 2366457.68,
            "name": "Y",
            "position": 1,
            "stddev": 128.330602,
            "variance": 16468.7434
          },
          {
            "average": 11.3484854,
            "count": 2821213,
            "maximum": 13.82511804,
            "minimum": 9.725118042,
            "name": "Z",
            "position": 2,
            "stddev": 0.5985328683,
            "variance": 0.3582415944
          },
          {
            "average": 41172.26115,
            "count": 2821213,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10080.6304,
            "variance": 101619109.2
          },
          {
            "average": 1,
            "count": 2821213,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2821213,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4994284373,
            "count": 2821213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997619,
            "variance": 0.2499997619
          },
          {
            "average": 0.0004363371358,
            "count": 2821213,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02088413035,
            "variance": 0.0004361469003
          },
          {
            "average": 1.326954044,
            "count": 2821213,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4698357783,
            "variance": 0.2207456586
          },
          {
            "average": 0.2480597228,
            "count": 2821213,
            "maximum": 16.29000092,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43100009,
            "variance": 108.8057629
          },
          {
            "average": 0.486398581,
            "count": 2821213,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998150557,
            "variance": 0.24981509
          },
          {
            "average": 409.1568839,
            "count": 2821213,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9275069637,
            "variance": 0.8602691677
          },
          {
            "average": 220416804.5,
            "count": 2821213,
            "maximum": 220417973.7,
            "minimum": 220415700.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 539.4367006,
            "variance": 290991.9539
          },
          {
            "average": 0.486398581,
            "count": 2821213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998150557,
            "variance": 0.24981509
          },
          {
            "average": 0,
            "count": 2821213,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2821213,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2821213,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2276074157,
            "count": 2821213,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4192878991,
            "variance": 0.1758023423
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102206.9897,
          2366457.68,
          9.725118042,
          -101711.2297,
          2366931.26,
          13.82511804
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102206.98970250077,
                2366457.6795261595,
                9.725118041993714
              ],
              [
                -102206.98970250077,
                2366931.2595261596,
                9.725118041993714
              ],
              [
                -101711.22970250076,
                2366931.2595261596,
                13.825118041993715
              ],
              [
                -101711.22970250076,
                2366457.6795261595,
                13.825118041993715
              ],
              [
                -102206.98970250077,
                2366457.6795261595,
                9.725118041993714
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:59:33+00:00",
        "end_time": "2018-09-08T04:21:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2012.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2012.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2012.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2012.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7835126,
            71.27624247,
            9.725118042,
            -156.7694892,
            71.28077941,
            13.82511804
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78297244239684,
                  71.27624246630194,
                  9.725118041993714
                ],
                [
                  -156.78351259963299,
                  71.28058904655474,
                  9.725118041993714
                ],
                [
                  -156.770026727902,
                  71.2807794114689,
                  13.825118041993715
                ],
                [
                  -156.7694891815933,
                  71.27643278872597,
                  13.825118041993715
                ],
                [
                  -156.78297244239684,
                  71.27624246630194,
                  9.725118041993714
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2012.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2012.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:59:33Z",
            "pc:count": 2821213,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101963.9224,
                "count": 2821213,
                "maximum": -101711.2297,
                "minimum": -102206.9897,
                "name": "X",
                "position": 0,
                "stddev": 135.8790094,
                "variance": 18463.10519
              },
              {
                "average": 2366695.745,
                "count": 2821213,
                "maximum": 2366931.26,
                "minimum": 2366457.68,
                "name": "Y",
                "position": 1,
                "stddev": 128.330602,
                "variance": 16468.7434
              },
              {
                "average": 11.3484854,
                "count": 2821213,
                "maximum": 13.82511804,
                "minimum": 9.725118042,
                "name": "Z",
                "position": 2,
                "stddev": 0.5985328683,
                "variance": 0.3582415944
              },
              {
                "average": 41172.26115,
                "count": 2821213,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10080.6304,
                "variance": 101619109.2
              },
              {
                "average": 1,
                "count": 2821213,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2821213,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4994284373,
                "count": 2821213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997619,
                "variance": 0.2499997619
              },
              {
                "average": 0.0004363371358,
                "count": 2821213,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02088413035,
                "variance": 0.0004361469003
              },
              {
                "average": 1.326954044,
                "count": 2821213,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4698357783,
                "variance": 0.2207456586
              },
              {
                "average": 0.2480597228,
                "count": 2821213,
                "maximum": 16.29000092,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43100009,
                "variance": 108.8057629
              },
              {
                "average": 0.486398581,
                "count": 2821213,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998150557,
                "variance": 0.24981509
              },
              {
                "average": 409.1568839,
                "count": 2821213,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9275069637,
                "variance": 0.8602691677
              },
              {
                "average": 220416804.5,
                "count": 2821213,
                "maximum": 220417973.7,
                "minimum": 220415700.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 539.4367006,
                "variance": 290991.9539
              },
              {
                "average": 0.486398581,
                "count": 2821213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998150557,
                "variance": 0.24981509
              },
              {
                "average": 0,
                "count": 2821213,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2821213,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2821213,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2276074157,
                "count": 2821213,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4192878991,
                "variance": 0.1758023423
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102206.9897,
              2366457.68,
              9.725118042,
              -101711.2297,
              2366931.26,
              13.82511804
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102206.98970250077,
                    2366457.6795261595,
                    9.725118041993714
                  ],
                  [
                    -102206.98970250077,
                    2366931.2595261596,
                    9.725118041993714
                  ],
                  [
                    -101711.22970250076,
                    2366931.2595261596,
                    13.825118041993715
                  ],
                  [
                    -101711.22970250076,
                    2366457.6795261595,
                    13.825118041993715
                  ],
                  [
                    -102206.98970250077,
                    2366457.6795261595,
                    9.725118041993714
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:59:33+00:00",
            "end_time": "2018-09-08T04:21:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2055.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68066181723154,
              71.27965136181639,
              5.460693142918118
            ],
            [
              -156.681182294718,
              71.28399905186551,
              5.460693142918118
            ],
            [
              -156.66769079818494,
              71.28418244626408,
              7.220693142918118
            ],
            [
              -156.6671729340502,
              71.27983471526223,
              7.220693142918118
            ],
            [
              -156.68066181723154,
              71.27965136181639,
              5.460693142918118
            ]
          ]
        ]
      },
      "bbox": [
        -156.6811823,
        71.27965136,
        5.460693143,
        -156.6671729,
        71.28418245,
        7.220693143
      ],
      "properties": {
        "datetime": "2018-09-11T17:58:50Z",
        "pc:count": 3371881,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98196.22393,
            "count": 3371881,
            "maximum": -97940.79147,
            "minimum": -98436.65147,
            "name": "X",
            "position": 0,
            "stddev": 137.233123,
            "variance": 18832.93004
          },
          {
            "average": 2366902.485,
            "count": 3371881,
            "maximum": 2367147.563,
            "minimum": 2366673.903,
            "name": "Y",
            "position": 1,
            "stddev": 127.5125239,
            "variance": 16259.44375
          },
          {
            "average": 5.946410516,
            "count": 3371881,
            "maximum": 7.220693143,
            "minimum": 5.460693143,
            "name": "Z",
            "position": 2,
            "stddev": 0.2210612457,
            "variance": 0.04886807436
          },
          {
            "average": 38421.27312,
            "count": 3371881,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11060.15363,
            "variance": 122326998.3
          },
          {
            "average": 1,
            "count": 3371881,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3371881,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5048211962,
            "count": 3371881,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999768297,
            "variance": 0.2499768302
          },
          {
            "average": 0.0005101010386,
            "count": 3371881,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02257965869,
            "variance": 0.0005098409867
          },
          {
            "average": 1.289465731,
            "count": 3371881,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4544714889,
            "variance": 0.2065443342
          },
          {
            "average": -2.40879109,
            "count": 3371881,
            "maximum": 16.38599968,
            "minimum": -19.63199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.71748251,
            "variance": 114.8644313
          },
          {
            "average": 0.4821703376,
            "count": 3371881,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996820761,
            "variance": 0.2496821772
          },
          {
            "average": 421.1976499,
            "count": 3371881,
            "maximum": 459,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.27220085,
            "variance": 233.2401188
          },
          {
            "average": 220462581.9,
            "count": 3371881,
            "maximum": 220723930.8,
            "minimum": 220419016.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 105416.4451,
            "variance": 11112626890.0
          },
          {
            "average": 0.4821703376,
            "count": 3371881,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996820761,
            "variance": 0.2496821772
          },
          {
            "average": 0,
            "count": 3371881,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3371881,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3371881,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2216430532,
            "count": 3371881,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4153522136,
            "variance": 0.1725174614
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98436.65147,
          2366673.903,
          5.460693143,
          -97940.79147,
          2367147.563,
          7.220693143
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98436.65146670103,
                2366673.9032467473,
                5.460693142918118
              ],
              [
                -98436.65146670103,
                2367147.5632467475,
                5.460693142918118
              ],
              [
                -97940.79146670105,
                2367147.5632467475,
                7.220693142918118
              ],
              [
                -97940.79146670105,
                2366673.9032467473,
                7.220693142918118
              ],
              [
                -98436.65146670103,
                2366673.9032467473,
                5.460693142918118
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:58:50+00:00",
        "end_time": "2018-09-08T05:16:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2055.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2055.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2055.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2055.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6811823,
            71.27965136,
            5.460693143,
            -156.6671729,
            71.28418245,
            7.220693143
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68066181723154,
                  71.27965136181639,
                  5.460693142918118
                ],
                [
                  -156.681182294718,
                  71.28399905186551,
                  5.460693142918118
                ],
                [
                  -156.66769079818494,
                  71.28418244626408,
                  7.220693142918118
                ],
                [
                  -156.6671729340502,
                  71.27983471526223,
                  7.220693142918118
                ],
                [
                  -156.68066181723154,
                  71.27965136181639,
                  5.460693142918118
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2055.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2055.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:58:50Z",
            "pc:count": 3371881,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98196.22393,
                "count": 3371881,
                "maximum": -97940.79147,
                "minimum": -98436.65147,
                "name": "X",
                "position": 0,
                "stddev": 137.233123,
                "variance": 18832.93004
              },
              {
                "average": 2366902.485,
                "count": 3371881,
                "maximum": 2367147.563,
                "minimum": 2366673.903,
                "name": "Y",
                "position": 1,
                "stddev": 127.5125239,
                "variance": 16259.44375
              },
              {
                "average": 5.946410516,
                "count": 3371881,
                "maximum": 7.220693143,
                "minimum": 5.460693143,
                "name": "Z",
                "position": 2,
                "stddev": 0.2210612457,
                "variance": 0.04886807436
              },
              {
                "average": 38421.27312,
                "count": 3371881,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11060.15363,
                "variance": 122326998.3
              },
              {
                "average": 1,
                "count": 3371881,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3371881,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5048211962,
                "count": 3371881,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999768297,
                "variance": 0.2499768302
              },
              {
                "average": 0.0005101010386,
                "count": 3371881,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02257965869,
                "variance": 0.0005098409867
              },
              {
                "average": 1.289465731,
                "count": 3371881,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4544714889,
                "variance": 0.2065443342
              },
              {
                "average": -2.40879109,
                "count": 3371881,
                "maximum": 16.38599968,
                "minimum": -19.63199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.71748251,
                "variance": 114.8644313
              },
              {
                "average": 0.4821703376,
                "count": 3371881,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996820761,
                "variance": 0.2496821772
              },
              {
                "average": 421.1976499,
                "count": 3371881,
                "maximum": 459,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.27220085,
                "variance": 233.2401188
              },
              {
                "average": 220462581.9,
                "count": 3371881,
                "maximum": 220723930.8,
                "minimum": 220419016.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 105416.4451,
                "variance": 11112626890.0
              },
              {
                "average": 0.4821703376,
                "count": 3371881,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996820761,
                "variance": 0.2496821772
              },
              {
                "average": 0,
                "count": 3371881,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3371881,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3371881,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2216430532,
                "count": 3371881,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4153522136,
                "variance": 0.1725174614
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98436.65147,
              2366673.903,
              5.460693143,
              -97940.79147,
              2367147.563,
              7.220693143
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98436.65146670103,
                    2366673.9032467473,
                    5.460693142918118
                  ],
                  [
                    -98436.65146670103,
                    2367147.5632467475,
                    5.460693142918118
                  ],
                  [
                    -97940.79146670105,
                    2367147.5632467475,
                    7.220693142918118
                  ],
                  [
                    -97940.79146670105,
                    2366673.9032467473,
                    7.220693142918118
                  ],
                  [
                    -98436.65146670103,
                    2366673.9032467473,
                    5.460693142918118
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:58:50+00:00",
            "end_time": "2018-09-08T05:16:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1779.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80973482883343,
              71.25591902313157,
              5.054299075425408
            ],
            [
              -156.81027982125565,
              71.26026603721495,
              5.054299075425408
            ],
            [
              -156.7968096596488,
              71.26045816386971,
              10.814299075425408
            ],
            [
              -156.796267273277,
              71.25611110694892,
              10.814299075425408
            ],
            [
              -156.80973482883343,
              71.25591902313157,
              5.054299075425408
            ]
          ]
        ]
      },
      "bbox": [
        -156.8102798,
        71.25591902,
        5.054299075,
        -156.7962673,
        71.26045816,
        10.81429908
      ],
      "properties": {
        "datetime": "2018-09-08T05:22:44Z",
        "pc:count": 3226701,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103038.4706,
            "count": 3226701,
            "maximum": -102787.2191,
            "minimum": -103282.8591,
            "name": "X",
            "position": 0,
            "stddev": 135.6781679,
            "variance": 18408.56526
          },
          {
            "average": 2364524.987,
            "count": 3226701,
            "maximum": 2364762.173,
            "minimum": 2364288.473,
            "name": "Y",
            "position": 1,
            "stddev": 127.627231,
            "variance": 16288.71008
          },
          {
            "average": 9.89535291,
            "count": 3226701,
            "maximum": 10.81429908,
            "minimum": 5.054299075,
            "name": "Z",
            "position": 2,
            "stddev": 0.5793771472,
            "variance": 0.3356778786
          },
          {
            "average": 39466.41994,
            "count": 3226701,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11145.26109,
            "variance": 124216844.8
          },
          {
            "average": 1,
            "count": 3226701,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3226701,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4997891035,
            "count": 3226701,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.500000033,
            "variance": 0.250000033
          },
          {
            "average": 0.0004326400246,
            "count": 3226701,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02079550387,
            "variance": 0.0004324529812
          },
          {
            "average": 1.301535531,
            "count": 3226701,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4590564087,
            "variance": 0.2107327864
          },
          {
            "average": 0.2773767978,
            "count": 3226701,
            "maximum": 16.36800003,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39425598,
            "variance": 108.0405574
          },
          {
            "average": 0.4898253665,
            "count": 3226701,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998965436,
            "variance": 0.2498965543
          },
          {
            "average": 411.8763105,
            "count": 3226701,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9296804638,
            "variance": 0.8643057649
          },
          {
            "average": 220418381.2,
            "count": 3226701,
            "maximum": 220419364.6,
            "minimum": 220417164.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.7166279,
            "variance": 284853.4389
          },
          {
            "average": 0.4898253665,
            "count": 3226701,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998965436,
            "variance": 0.2498965543
          },
          {
            "average": 0,
            "count": 3226701,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3226701,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3226701,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2301762698,
            "count": 3226701,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4209456135,
            "variance": 0.1771952095
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103282.8591,
          2364288.473,
          5.054299075,
          -102787.2191,
          2364762.173,
          10.81429908
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103282.8591134565,
                2364288.472672064,
                5.054299075425408
              ],
              [
                -103282.8591134565,
                2364762.172672064,
                5.054299075425408
              ],
              [
                -102787.2191134565,
                2364762.172672064,
                10.814299075425408
              ],
              [
                -102787.2191134565,
                2364288.472672064,
                10.814299075425408
              ],
              [
                -103282.8591134565,
                2364288.472672064,
                5.054299075425408
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:22:44+00:00",
        "end_time": "2018-09-08T04:46:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1779.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1779.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1779.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1779.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8102798,
            71.25591902,
            5.054299075,
            -156.7962673,
            71.26045816,
            10.81429908
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80973482883343,
                  71.25591902313157,
                  5.054299075425408
                ],
                [
                  -156.81027982125565,
                  71.26026603721495,
                  5.054299075425408
                ],
                [
                  -156.7968096596488,
                  71.26045816386971,
                  10.814299075425408
                ],
                [
                  -156.796267273277,
                  71.25611110694892,
                  10.814299075425408
                ],
                [
                  -156.80973482883343,
                  71.25591902313157,
                  5.054299075425408
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1779.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1779.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:22:44Z",
            "pc:count": 3226701,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103038.4706,
                "count": 3226701,
                "maximum": -102787.2191,
                "minimum": -103282.8591,
                "name": "X",
                "position": 0,
                "stddev": 135.6781679,
                "variance": 18408.56526
              },
              {
                "average": 2364524.987,
                "count": 3226701,
                "maximum": 2364762.173,
                "minimum": 2364288.473,
                "name": "Y",
                "position": 1,
                "stddev": 127.627231,
                "variance": 16288.71008
              },
              {
                "average": 9.89535291,
                "count": 3226701,
                "maximum": 10.81429908,
                "minimum": 5.054299075,
                "name": "Z",
                "position": 2,
                "stddev": 0.5793771472,
                "variance": 0.3356778786
              },
              {
                "average": 39466.41994,
                "count": 3226701,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11145.26109,
                "variance": 124216844.8
              },
              {
                "average": 1,
                "count": 3226701,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3226701,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4997891035,
                "count": 3226701,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.500000033,
                "variance": 0.250000033
              },
              {
                "average": 0.0004326400246,
                "count": 3226701,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02079550387,
                "variance": 0.0004324529812
              },
              {
                "average": 1.301535531,
                "count": 3226701,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4590564087,
                "variance": 0.2107327864
              },
              {
                "average": 0.2773767978,
                "count": 3226701,
                "maximum": 16.36800003,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39425598,
                "variance": 108.0405574
              },
              {
                "average": 0.4898253665,
                "count": 3226701,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998965436,
                "variance": 0.2498965543
              },
              {
                "average": 411.8763105,
                "count": 3226701,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9296804638,
                "variance": 0.8643057649
              },
              {
                "average": 220418381.2,
                "count": 3226701,
                "maximum": 220419364.6,
                "minimum": 220417164.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.7166279,
                "variance": 284853.4389
              },
              {
                "average": 0.4898253665,
                "count": 3226701,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998965436,
                "variance": 0.2498965543
              },
              {
                "average": 0,
                "count": 3226701,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3226701,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3226701,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2301762698,
                "count": 3226701,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4209456135,
                "variance": 0.1771952095
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103282.8591,
              2364288.473,
              5.054299075,
              -102787.2191,
              2364762.173,
              10.81429908
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103282.8591134565,
                    2364288.472672064,
                    5.054299075425408
                  ],
                  [
                    -103282.8591134565,
                    2364762.172672064,
                    5.054299075425408
                  ],
                  [
                    -102787.2191134565,
                    2364762.172672064,
                    10.814299075425408
                  ],
                  [
                    -102787.2191134565,
                    2364288.472672064,
                    10.814299075425408
                  ],
                  [
                    -103282.8591134565,
                    2364288.472672064,
                    5.054299075425408
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:22:44+00:00",
            "end_time": "2018-09-08T04:46:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1615.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8614220770686,
              71.24394352224695,
              1.962735955039513
            ],
            [
              -156.86197688634374,
              71.24829077708688,
              1.962735955039513
            ],
            [
              -156.84851598994447,
              71.24848640530398,
              69.7427359550395
            ],
            [
              -156.8479637837175,
              71.2441391068736,
              69.7427359550395
            ],
            [
              -156.8614220770686,
              71.24394352224695,
              1.962735955039513
            ]
          ]
        ]
      },
      "bbox": [
        -156.8619769,
        71.24394352,
        1.962735955,
        -156.8479638,
        71.24848641,
        69.74273596
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:41Z",
        "pc:count": 2928396,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105024.4736,
            "count": 2928396,
            "maximum": -104742.2448,
            "minimum": -105237.8248,
            "name": "X",
            "position": 0,
            "stddev": 127.6319979,
            "variance": 16289.9269
          },
          {
            "average": 2363301.735,
            "count": 2928396,
            "maximum": 2363540.696,
            "minimum": 2363066.916,
            "name": "Y",
            "position": 1,
            "stddev": 127.1231469,
            "variance": 16160.29447
          },
          {
            "average": 7.234010151,
            "count": 2928396,
            "maximum": 69.74273596,
            "minimum": 1.962735955,
            "name": "Z",
            "position": 2,
            "stddev": 2.641063583,
            "variance": 6.97521685
          },
          {
            "average": 45849.63469,
            "count": 2928396,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11318.00067,
            "variance": 128097139.1
          },
          {
            "average": 1.000000341,
            "count": 2928396,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005843662125,
            "variance": 3.414838704e-07
          },
          {
            "average": 1.000000341,
            "count": 2928396,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0005843662125,
            "variance": 3.414838704e-07
          },
          {
            "average": 0.501281589,
            "count": 2928396,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999984429,
            "variance": 0.2499984429
          },
          {
            "average": 0.0004381238057,
            "count": 2928396,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02092682496,
            "variance": 0.0004379320027
          },
          {
            "average": 1.941988037,
            "count": 2928396,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.196865506,
            "variance": 4.826218052
          },
          {
            "average": 0.1243663465,
            "count": 2928396,
            "maximum": 20.56200027,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.631988521,
            "variance": 92.77520286
          },
          {
            "average": 0.5078968145,
            "count": 2928396,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999377218,
            "variance": 0.2499377257
          },
          {
            "average": 421.7062095,
            "count": 2928396,
            "maximum": 466,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.46522208,
            "variance": 460.7557589
          },
          {
            "average": 220478508.3,
            "count": 2928396,
            "maximum": 220726501.3,
            "minimum": 220416928.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 122569.5205,
            "variance": 15023287350.0
          },
          {
            "average": 0.5078968145,
            "count": 2928396,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999377218,
            "variance": 0.2499377257
          },
          {
            "average": 0,
            "count": 2928396,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2928396,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2928396,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1680612868,
            "count": 2928396,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3739207649,
            "variance": 0.1398167384
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105237.8248,
          2363066.916,
          1.962735955,
          -104742.2448,
          2363540.696,
          69.74273596
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105237.82475900957,
                2363066.916196379,
                1.962735955039513
              ],
              [
                -105237.82475900957,
                2363540.696196379,
                1.962735955039513
              ],
              [
                -104742.24475900958,
                2363540.696196379,
                69.7427359550395
              ],
              [
                -104742.24475900958,
                2363066.916196379,
                69.7427359550395
              ],
              [
                -105237.82475900957,
                2363066.916196379,
                1.962735955039513
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:41+00:00",
        "end_time": "2018-09-08T04:42:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1615.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1615.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1615.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1615.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8619769,
            71.24394352,
            1.962735955,
            -156.8479638,
            71.24848641,
            69.74273596
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8614220770686,
                  71.24394352224695,
                  1.962735955039513
                ],
                [
                  -156.86197688634374,
                  71.24829077708688,
                  1.962735955039513
                ],
                [
                  -156.84851598994447,
                  71.24848640530398,
                  69.7427359550395
                ],
                [
                  -156.8479637837175,
                  71.2441391068736,
                  69.7427359550395
                ],
                [
                  -156.8614220770686,
                  71.24394352224695,
                  1.962735955039513
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1615.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1615.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:41Z",
            "pc:count": 2928396,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105024.4736,
                "count": 2928396,
                "maximum": -104742.2448,
                "minimum": -105237.8248,
                "name": "X",
                "position": 0,
                "stddev": 127.6319979,
                "variance": 16289.9269
              },
              {
                "average": 2363301.735,
                "count": 2928396,
                "maximum": 2363540.696,
                "minimum": 2363066.916,
                "name": "Y",
                "position": 1,
                "stddev": 127.1231469,
                "variance": 16160.29447
              },
              {
                "average": 7.234010151,
                "count": 2928396,
                "maximum": 69.74273596,
                "minimum": 1.962735955,
                "name": "Z",
                "position": 2,
                "stddev": 2.641063583,
                "variance": 6.97521685
              },
              {
                "average": 45849.63469,
                "count": 2928396,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11318.00067,
                "variance": 128097139.1
              },
              {
                "average": 1.000000341,
                "count": 2928396,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005843662125,
                "variance": 3.414838704e-07
              },
              {
                "average": 1.000000341,
                "count": 2928396,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0005843662125,
                "variance": 3.414838704e-07
              },
              {
                "average": 0.501281589,
                "count": 2928396,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999984429,
                "variance": 0.2499984429
              },
              {
                "average": 0.0004381238057,
                "count": 2928396,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02092682496,
                "variance": 0.0004379320027
              },
              {
                "average": 1.941988037,
                "count": 2928396,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.196865506,
                "variance": 4.826218052
              },
              {
                "average": 0.1243663465,
                "count": 2928396,
                "maximum": 20.56200027,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.631988521,
                "variance": 92.77520286
              },
              {
                "average": 0.5078968145,
                "count": 2928396,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999377218,
                "variance": 0.2499377257
              },
              {
                "average": 421.7062095,
                "count": 2928396,
                "maximum": 466,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.46522208,
                "variance": 460.7557589
              },
              {
                "average": 220478508.3,
                "count": 2928396,
                "maximum": 220726501.3,
                "minimum": 220416928.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 122569.5205,
                "variance": 15023287350.0
              },
              {
                "average": 0.5078968145,
                "count": 2928396,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999377218,
                "variance": 0.2499377257
              },
              {
                "average": 0,
                "count": 2928396,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2928396,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2928396,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1680612868,
                "count": 2928396,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3739207649,
                "variance": 0.1398167384
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105237.8248,
              2363066.916,
              1.962735955,
              -104742.2448,
              2363540.696,
              69.74273596
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105237.82475900957,
                    2363066.916196379,
                    1.962735955039513
                  ],
                  [
                    -105237.82475900957,
                    2363540.696196379,
                    1.962735955039513
                  ],
                  [
                    -104742.24475900958,
                    2363540.696196379,
                    69.7427359550395
                  ],
                  [
                    -104742.24475900958,
                    2363066.916196379,
                    69.7427359550395
                  ],
                  [
                    -105237.82475900957,
                    2363066.916196379,
                    1.962735955039513
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:41+00:00",
            "end_time": "2018-09-08T04:42:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1928.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.86116768905202,
              71.26877156347834,
              0.966585738414991
            ],
            [
              -156.86124197189574,
              71.26935320791603,
              0.966585738414991
            ],
            [
              -156.85998429090898,
              71.26937150574145,
              1.446585738414991
            ],
            [
              -156.85991004063607,
              71.26878986075748,
              1.446585738414991
            ],
            [
              -156.86116768905202,
              71.26877156347834,
              0.966585738414991
            ]
          ]
        ]
      },
      "bbox": [
        -156.861242,
        71.26877156,
        0.9665857384,
        -156.85991,
        71.26937151,
        1.446585738
      ],
      "properties": {
        "datetime": "2018-09-08T04:22:34Z",
        "pc:count": 12573,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105082.3819,
            "count": 12573,
            "maximum": -105065.7914,
            "minimum": -105112.0514,
            "name": "X",
            "position": 0,
            "stddev": 10.60753871,
            "variance": 112.5198775
          },
          {
            "average": 2365789.426,
            "count": 12573,
            "maximum": 2365830.54,
            "minimum": 2365767.16,
            "name": "Y",
            "position": 1,
            "stddev": 14.77729814,
            "variance": 218.3685404
          },
          {
            "average": 1.170425713,
            "count": 12573,
            "maximum": 1.446585738,
            "minimum": 0.9665857384,
            "name": "Z",
            "position": 2,
            "stddev": 0.06175462696,
            "variance": 0.003813633951
          },
          {
            "average": 16137.39513,
            "count": 12573,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11537.66209,
            "variance": 133117646.6
          },
          {
            "average": 1,
            "count": 12573,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 12573,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4894615446,
            "count": 12573,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999088093,
            "variance": 0.2499088176
          },
          {
            "average": 0.000397677563,
            "count": 12573,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01993868188,
            "variance": 0.000397551035
          },
          {
            "average": 7.668098306,
            "count": 12573,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.426455207,
            "variance": 5.887684874
          },
          {
            "average": 4.719468862,
            "count": 12573,
            "maximum": 10.93200016,
            "minimum": -15.70800018,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.31792056,
            "variance": 28.28027908
          },
          {
            "average": 0.4726795514,
            "count": 12573,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992728905,
            "variance": 0.2492734192
          },
          {
            "average": 405.6445558,
            "count": 12573,
            "maximum": 407,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5743011526,
            "variance": 0.3298218139
          },
          {
            "average": 220414830.4,
            "count": 12573,
            "maximum": 220415754.1,
            "minimum": 220414625.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 249.6138139,
            "variance": 62307.05607
          },
          {
            "average": 0.4726795514,
            "count": 12573,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992728905,
            "variance": 0.2492734192
          },
          {
            "average": 0,
            "count": 12573,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 12573,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 12573,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05034597948,
            "count": 12573,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2186665608,
            "variance": 0.04781506483
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105112.0514,
          2365767.16,
          0.9665857384,
          -105065.7914,
          2365830.54,
          1.446585738
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105112.05142724689,
                2365767.159823124,
                0.966585738414991
              ],
              [
                -105112.05142724689,
                2365830.5398231237,
                0.966585738414991
              ],
              [
                -105065.79142724688,
                2365830.5398231237,
                1.446585738414991
              ],
              [
                -105065.79142724688,
                2365767.159823124,
                1.446585738414991
              ],
              [
                -105112.05142724689,
                2365767.159823124,
                0.966585738414991
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:22:34+00:00",
        "end_time": "2018-09-08T04:03:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1928.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1928.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1928.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1928.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.861242,
            71.26877156,
            0.9665857384,
            -156.85991,
            71.26937151,
            1.446585738
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.86116768905202,
                  71.26877156347834,
                  0.966585738414991
                ],
                [
                  -156.86124197189574,
                  71.26935320791603,
                  0.966585738414991
                ],
                [
                  -156.85998429090898,
                  71.26937150574145,
                  1.446585738414991
                ],
                [
                  -156.85991004063607,
                  71.26878986075748,
                  1.446585738414991
                ],
                [
                  -156.86116768905202,
                  71.26877156347834,
                  0.966585738414991
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1928.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1928.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:22:34Z",
            "pc:count": 12573,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105082.3819,
                "count": 12573,
                "maximum": -105065.7914,
                "minimum": -105112.0514,
                "name": "X",
                "position": 0,
                "stddev": 10.60753871,
                "variance": 112.5198775
              },
              {
                "average": 2365789.426,
                "count": 12573,
                "maximum": 2365830.54,
                "minimum": 2365767.16,
                "name": "Y",
                "position": 1,
                "stddev": 14.77729814,
                "variance": 218.3685404
              },
              {
                "average": 1.170425713,
                "count": 12573,
                "maximum": 1.446585738,
                "minimum": 0.9665857384,
                "name": "Z",
                "position": 2,
                "stddev": 0.06175462696,
                "variance": 0.003813633951
              },
              {
                "average": 16137.39513,
                "count": 12573,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11537.66209,
                "variance": 133117646.6
              },
              {
                "average": 1,
                "count": 12573,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 12573,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4894615446,
                "count": 12573,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999088093,
                "variance": 0.2499088176
              },
              {
                "average": 0.000397677563,
                "count": 12573,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01993868188,
                "variance": 0.000397551035
              },
              {
                "average": 7.668098306,
                "count": 12573,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.426455207,
                "variance": 5.887684874
              },
              {
                "average": 4.719468862,
                "count": 12573,
                "maximum": 10.93200016,
                "minimum": -15.70800018,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.31792056,
                "variance": 28.28027908
              },
              {
                "average": 0.4726795514,
                "count": 12573,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992728905,
                "variance": 0.2492734192
              },
              {
                "average": 405.6445558,
                "count": 12573,
                "maximum": 407,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5743011526,
                "variance": 0.3298218139
              },
              {
                "average": 220414830.4,
                "count": 12573,
                "maximum": 220415754.1,
                "minimum": 220414625.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 249.6138139,
                "variance": 62307.05607
              },
              {
                "average": 0.4726795514,
                "count": 12573,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992728905,
                "variance": 0.2492734192
              },
              {
                "average": 0,
                "count": 12573,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 12573,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 12573,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05034597948,
                "count": 12573,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2186665608,
                "variance": 0.04781506483
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105112.0514,
              2365767.16,
              0.9665857384,
              -105065.7914,
              2365830.54,
              1.446585738
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105112.05142724689,
                    2365767.159823124,
                    0.966585738414991
                  ],
                  [
                    -105112.05142724689,
                    2365830.5398231237,
                    0.966585738414991
                  ],
                  [
                    -105065.79142724688,
                    2365830.5398231237,
                    1.446585738414991
                  ],
                  [
                    -105065.79142724688,
                    2365767.159823124,
                    1.446585738414991
                  ],
                  [
                    -105112.05142724689,
                    2365767.159823124,
                    0.966585738414991
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:22:34+00:00",
            "end_time": "2018-09-08T04:03:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1973.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83423785686747,
              71.2724677250994,
              0.973379843544929
            ],
            [
              -156.8347879122112,
              71.27681442002509,
              0.973379843544929
            ],
            [
              -156.82130475037386,
              71.27700829324417,
              24.79337984354493
            ],
            [
              -156.82075730495814,
              71.27266155505356,
              24.79337984354493
            ],
            [
              -156.83423785686747,
              71.2724677250994,
              0.973379843544929
            ]
          ]
        ]
      },
      "bbox": [
        -156.8347879,
        71.27246773,
        0.9733798435,
        -156.8207573,
        71.27700829,
        24.79337984
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:30Z",
        "pc:count": 2750080,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103848.2018,
            "count": 2750080,
            "maximum": -103610.3939,
            "minimum": -104106.1539,
            "name": "X",
            "position": 0,
            "stddev": 133.7622038,
            "variance": 17892.32718
          },
          {
            "average": 2366352.665,
            "count": 2750080,
            "maximum": 2366600.372,
            "minimum": 2366126.752,
            "name": "Y",
            "position": 1,
            "stddev": 127.955038,
            "variance": 16372.49176
          },
          {
            "average": 7.267252251,
            "count": 2750080,
            "maximum": 24.79337984,
            "minimum": 0.9733798435,
            "name": "Z",
            "position": 2,
            "stddev": 3.619391872,
            "variance": 13.09999752
          },
          {
            "average": 31284.27863,
            "count": 2750080,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12549.98815,
            "variance": 157502202.5
          },
          {
            "average": 1.000263629,
            "count": 2750080,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01630156574,
            "variance": 0.0002657410457
          },
          {
            "average": 1.000527621,
            "count": 2750080,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02310601846,
            "variance": 0.000533888089
          },
          {
            "average": 0.5018337648,
            "count": 2750080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999967282,
            "variance": 0.2499967282
          },
          {
            "average": 0.0005105306027,
            "count": 2750080,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02258915994,
            "variance": 0.0005102701468
          },
          {
            "average": 1.635385516,
            "count": 2750080,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.627266077,
            "variance": 2.647994886
          },
          {
            "average": 1.567188416,
            "count": 2750080,
            "maximum": 16.42200089,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62635378,
            "variance": 112.9193946
          },
          {
            "average": 0.5443772545,
            "count": 2750080,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980268562,
            "variance": 0.2480307495
          },
          {
            "average": 406.657918,
            "count": 2750080,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.992349735,
            "variance": 0.9847579966
          },
          {
            "average": 220415385.1,
            "count": 2750080,
            "maximum": 220416050.6,
            "minimum": 220414597.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 543.9729976,
            "variance": 295906.6221
          },
          {
            "average": 0.5443772545,
            "count": 2750080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980268562,
            "variance": 0.2480307495
          },
          {
            "average": 0,
            "count": 2750080,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2750080,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2750080,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2824881458,
            "count": 2750080,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4502095812,
            "variance": 0.202688667
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104106.1539,
          2366126.752,
          0.9733798435,
          -103610.3939,
          2366600.372,
          24.79337984
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104106.15389594539,
                2366126.7521136557,
                0.973379843544929
              ],
              [
                -104106.15389594539,
                2366600.372113656,
                0.973379843544929
              ],
              [
                -103610.39389594538,
                2366600.372113656,
                24.79337984354493
              ],
              [
                -103610.39389594538,
                2366126.7521136557,
                24.79337984354493
              ],
              [
                -104106.15389594539,
                2366126.7521136557,
                0.973379843544929
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:30+00:00",
        "end_time": "2018-09-08T04:03:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1973.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1973.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1973.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1973.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8347879,
            71.27246773,
            0.9733798435,
            -156.8207573,
            71.27700829,
            24.79337984
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83423785686747,
                  71.2724677250994,
                  0.973379843544929
                ],
                [
                  -156.8347879122112,
                  71.27681442002509,
                  0.973379843544929
                ],
                [
                  -156.82130475037386,
                  71.27700829324417,
                  24.79337984354493
                ],
                [
                  -156.82075730495814,
                  71.27266155505356,
                  24.79337984354493
                ],
                [
                  -156.83423785686747,
                  71.2724677250994,
                  0.973379843544929
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1973.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1973.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:30Z",
            "pc:count": 2750080,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103848.2018,
                "count": 2750080,
                "maximum": -103610.3939,
                "minimum": -104106.1539,
                "name": "X",
                "position": 0,
                "stddev": 133.7622038,
                "variance": 17892.32718
              },
              {
                "average": 2366352.665,
                "count": 2750080,
                "maximum": 2366600.372,
                "minimum": 2366126.752,
                "name": "Y",
                "position": 1,
                "stddev": 127.955038,
                "variance": 16372.49176
              },
              {
                "average": 7.267252251,
                "count": 2750080,
                "maximum": 24.79337984,
                "minimum": 0.9733798435,
                "name": "Z",
                "position": 2,
                "stddev": 3.619391872,
                "variance": 13.09999752
              },
              {
                "average": 31284.27863,
                "count": 2750080,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12549.98815,
                "variance": 157502202.5
              },
              {
                "average": 1.000263629,
                "count": 2750080,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01630156574,
                "variance": 0.0002657410457
              },
              {
                "average": 1.000527621,
                "count": 2750080,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02310601846,
                "variance": 0.000533888089
              },
              {
                "average": 0.5018337648,
                "count": 2750080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999967282,
                "variance": 0.2499967282
              },
              {
                "average": 0.0005105306027,
                "count": 2750080,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02258915994,
                "variance": 0.0005102701468
              },
              {
                "average": 1.635385516,
                "count": 2750080,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.627266077,
                "variance": 2.647994886
              },
              {
                "average": 1.567188416,
                "count": 2750080,
                "maximum": 16.42200089,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62635378,
                "variance": 112.9193946
              },
              {
                "average": 0.5443772545,
                "count": 2750080,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980268562,
                "variance": 0.2480307495
              },
              {
                "average": 406.657918,
                "count": 2750080,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.992349735,
                "variance": 0.9847579966
              },
              {
                "average": 220415385.1,
                "count": 2750080,
                "maximum": 220416050.6,
                "minimum": 220414597.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 543.9729976,
                "variance": 295906.6221
              },
              {
                "average": 0.5443772545,
                "count": 2750080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980268562,
                "variance": 0.2480307495
              },
              {
                "average": 0,
                "count": 2750080,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2750080,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2750080,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2824881458,
                "count": 2750080,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4502095812,
                "variance": 0.202688667
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104106.1539,
              2366126.752,
              0.9733798435,
              -103610.3939,
              2366600.372,
              24.79337984
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104106.15389594539,
                    2366126.7521136557,
                    0.973379843544929
                  ],
                  [
                    -104106.15389594539,
                    2366600.372113656,
                    0.973379843544929
                  ],
                  [
                    -103610.39389594538,
                    2366600.372113656,
                    24.79337984354493
                  ],
                  [
                    -103610.39389594538,
                    2366126.7521136557,
                    24.79337984354493
                  ],
                  [
                    -104106.15389594539,
                    2366126.7521136557,
                    0.973379843544929
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:30+00:00",
            "end_time": "2018-09-08T04:03:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1618.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82321947641032,
              71.24370779442565,
              12.60227715491609
            ],
            [
              -156.82376690033044,
              71.24805533304612,
              12.60227715491609
            ],
            [
              -156.81030527177828,
              71.24824835233191,
              15.302277154916089
            ],
            [
              -156.80976045132272,
              71.24390077070007,
              15.302277154916089
            ],
            [
              -156.82321947641032,
              71.24370779442565,
              12.60227715491609
            ]
          ]
        ]
      },
      "bbox": [
        -156.8237669,
        71.24370779,
        12.60227715,
        -156.8097605,
        71.24824835,
        15.30227715
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:01Z",
        "pc:count": 3776395,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103572.2182,
            "count": 3776395,
            "maximum": -103339.1466,
            "minimum": -103834.7466,
            "name": "X",
            "position": 0,
            "stddev": 135.7035368,
            "variance": 18415.44991
          },
          {
            "average": 2363216.89,
            "count": 3776395,
            "maximum": 2363454.939,
            "minimum": 2362981.139,
            "name": "Y",
            "position": 1,
            "stddev": 129.9306131,
            "variance": 16881.96422
          },
          {
            "average": 14.00323483,
            "count": 3776395,
            "maximum": 15.30227715,
            "minimum": 12.60227715,
            "name": "Z",
            "position": 2,
            "stddev": 0.5194528877,
            "variance": 0.2698313025
          },
          {
            "average": 44982.28288,
            "count": 3776395,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11061.87999,
            "variance": 122365188.9
          },
          {
            "average": 1,
            "count": 3776395,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3776395,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5013691629,
            "count": 3776395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999981916,
            "variance": 0.2499981916
          },
          {
            "average": 0.0004011762541,
            "count": 3776395,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02002536936,
            "variance": 0.0004010154179
          },
          {
            "average": 1.30502556,
            "count": 3776395,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4627594894,
            "variance": 0.214146345
          },
          {
            "average": -0.6237224891,
            "count": 3776395,
            "maximum": 20.70599937,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.01076556,
            "variance": 100.215427
          },
          {
            "average": 0.4875170632,
            "count": 3776395,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998442182,
            "variance": 0.2498442424
          },
          {
            "average": 423.1974979,
            "count": 3776395,
            "maximum": 466,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.84449457,
            "variance": 393.8039649
          },
          {
            "average": 220475590.6,
            "count": 3776395,
            "maximum": 220726521.9,
            "minimum": 220418257.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 118652.1031,
            "variance": 14078321570.0
          },
          {
            "average": 0.4875170632,
            "count": 3776395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998442182,
            "variance": 0.2498442424
          },
          {
            "average": 0,
            "count": 3776395,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3776395,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3776395,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1980415184,
            "count": 3776395,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3985236724,
            "variance": 0.1588211175
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103834.7466,
          2362981.139,
          12.60227715,
          -103339.1466,
          2363454.939,
          15.30227715
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103834.74662308498,
                2362981.138723036,
                12.60227715491609
              ],
              [
                -103834.74662308498,
                2363454.9387230356,
                12.60227715491609
              ],
              [
                -103339.14662308498,
                2363454.9387230356,
                15.302277154916089
              ],
              [
                -103339.14662308498,
                2362981.138723036,
                15.302277154916089
              ],
              [
                -103834.74662308498,
                2362981.138723036,
                12.60227715491609
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:01+00:00",
        "end_time": "2018-09-08T05:04:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1618.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1618.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1618.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1618.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8237669,
            71.24370779,
            12.60227715,
            -156.8097605,
            71.24824835,
            15.30227715
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82321947641032,
                  71.24370779442565,
                  12.60227715491609
                ],
                [
                  -156.82376690033044,
                  71.24805533304612,
                  12.60227715491609
                ],
                [
                  -156.81030527177828,
                  71.24824835233191,
                  15.302277154916089
                ],
                [
                  -156.80976045132272,
                  71.24390077070007,
                  15.302277154916089
                ],
                [
                  -156.82321947641032,
                  71.24370779442565,
                  12.60227715491609
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1618.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1618.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:01Z",
            "pc:count": 3776395,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103572.2182,
                "count": 3776395,
                "maximum": -103339.1466,
                "minimum": -103834.7466,
                "name": "X",
                "position": 0,
                "stddev": 135.7035368,
                "variance": 18415.44991
              },
              {
                "average": 2363216.89,
                "count": 3776395,
                "maximum": 2363454.939,
                "minimum": 2362981.139,
                "name": "Y",
                "position": 1,
                "stddev": 129.9306131,
                "variance": 16881.96422
              },
              {
                "average": 14.00323483,
                "count": 3776395,
                "maximum": 15.30227715,
                "minimum": 12.60227715,
                "name": "Z",
                "position": 2,
                "stddev": 0.5194528877,
                "variance": 0.2698313025
              },
              {
                "average": 44982.28288,
                "count": 3776395,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11061.87999,
                "variance": 122365188.9
              },
              {
                "average": 1,
                "count": 3776395,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3776395,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5013691629,
                "count": 3776395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999981916,
                "variance": 0.2499981916
              },
              {
                "average": 0.0004011762541,
                "count": 3776395,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02002536936,
                "variance": 0.0004010154179
              },
              {
                "average": 1.30502556,
                "count": 3776395,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4627594894,
                "variance": 0.214146345
              },
              {
                "average": -0.6237224891,
                "count": 3776395,
                "maximum": 20.70599937,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.01076556,
                "variance": 100.215427
              },
              {
                "average": 0.4875170632,
                "count": 3776395,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998442182,
                "variance": 0.2498442424
              },
              {
                "average": 423.1974979,
                "count": 3776395,
                "maximum": 466,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.84449457,
                "variance": 393.8039649
              },
              {
                "average": 220475590.6,
                "count": 3776395,
                "maximum": 220726521.9,
                "minimum": 220418257.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 118652.1031,
                "variance": 14078321570.0
              },
              {
                "average": 0.4875170632,
                "count": 3776395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998442182,
                "variance": 0.2498442424
              },
              {
                "average": 0,
                "count": 3776395,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3776395,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3776395,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1980415184,
                "count": 3776395,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3985236724,
                "variance": 0.1588211175
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103834.7466,
              2362981.139,
              12.60227715,
              -103339.1466,
              2363454.939,
              15.30227715
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103834.74662308498,
                    2362981.138723036,
                    12.60227715491609
                  ],
                  [
                    -103834.74662308498,
                    2363454.9387230356,
                    12.60227715491609
                  ],
                  [
                    -103339.14662308498,
                    2363454.9387230356,
                    15.302277154916089
                  ],
                  [
                    -103339.14662308498,
                    2362981.138723036,
                    15.302277154916089
                  ],
                  [
                    -103834.74662308498,
                    2362981.138723036,
                    12.60227715491609
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:01+00:00",
            "end_time": "2018-09-08T05:04:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2117.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71839105737715,
              71.28810945556295,
              6.037906293587027
            ],
            [
              -156.71891901103854,
              71.29245692591073,
              6.037906293587027
            ],
            [
              -156.70542109693108,
              71.292642939502,
              9.597906293587027
            ],
            [
              -156.7048957584498,
              71.28829542759838,
              9.597906293587027
            ],
            [
              -156.71839105737715,
              71.28810945556295,
              6.037906293587027
            ]
          ]
        ]
      },
      "bbox": [
        -156.718919,
        71.28810946,
        6.037906294,
        -156.7048958,
        71.29264294,
        9.597906294
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:06Z",
        "pc:count": 3078033,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99531.7861,
            "count": 3078033,
            "maximum": -99287.74284,
            "minimum": -99783.66284,
            "name": "X",
            "position": 0,
            "stddev": 133.6747522,
            "variance": 17868.93937
          },
          {
            "average": 2367886.846,
            "count": 3078033,
            "maximum": 2368123.774,
            "minimum": 2367650.154,
            "name": "Y",
            "position": 1,
            "stddev": 128.9279379,
            "variance": 16622.41316
          },
          {
            "average": 7.445267901,
            "count": 3078033,
            "maximum": 9.597906294,
            "minimum": 6.037906294,
            "name": "Z",
            "position": 2,
            "stddev": 0.6954415959,
            "variance": 0.4836390133
          },
          {
            "average": 41567.77066,
            "count": 3078033,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11586.48649,
            "variance": 134246669.3
          },
          {
            "average": 1.00000065,
            "count": 3078033,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008060802703,
            "variance": 6.497654022e-07
          },
          {
            "average": 1.0000013,
            "count": 3078033,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00113996928,
            "variance": 1.29952996e-06
          },
          {
            "average": 0.5018523193,
            "count": 3078033,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999966501,
            "variance": 0.2499966501
          },
          {
            "average": 0.0004074030395,
            "count": 3078033,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0201801188,
            "variance": 0.0004072371946
          },
          {
            "average": 1.296294744,
            "count": 3078033,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4578362551,
            "variance": 0.2096140365
          },
          {
            "average": 1.397447797,
            "count": 3078033,
            "maximum": 16.51799965,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.48631863,
            "variance": 109.9628784
          },
          {
            "average": 0.5279787449,
            "count": 3078033,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992166572,
            "variance": 0.2492172708
          },
          {
            "average": 410.775634,
            "count": 3078033,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9614958666,
            "variance": 0.9244743016
          },
          {
            "average": 220417732.3,
            "count": 3078033,
            "maximum": 220419026,
            "minimum": 220416802.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 528.0594993,
            "variance": 278846.8348
          },
          {
            "average": 0.5279787449,
            "count": 3078033,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992166572,
            "variance": 0.2492172708
          },
          {
            "average": 0,
            "count": 3078033,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3078033,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3078033,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2589254241,
            "count": 3078033,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4380446452,
            "variance": 0.1918831112
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99783.66284,
          2367650.154,
          6.037906294,
          -99287.74284,
          2368123.774,
          9.597906294
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99783.6628442607,
                2367650.1542048533,
                6.037906293587027
              ],
              [
                -99783.6628442607,
                2368123.7742048535,
                6.037906293587027
              ],
              [
                -99287.74284426069,
                2368123.7742048535,
                9.597906293587027
              ],
              [
                -99287.74284426069,
                2367650.1542048533,
                9.597906293587027
              ],
              [
                -99783.6628442607,
                2367650.1542048533,
                6.037906293587027
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:06+00:00",
        "end_time": "2018-09-08T04:40:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2117.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2117.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2117.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2117.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.718919,
            71.28810946,
            6.037906294,
            -156.7048958,
            71.29264294,
            9.597906294
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71839105737715,
                  71.28810945556295,
                  6.037906293587027
                ],
                [
                  -156.71891901103854,
                  71.29245692591073,
                  6.037906293587027
                ],
                [
                  -156.70542109693108,
                  71.292642939502,
                  9.597906293587027
                ],
                [
                  -156.7048957584498,
                  71.28829542759838,
                  9.597906293587027
                ],
                [
                  -156.71839105737715,
                  71.28810945556295,
                  6.037906293587027
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2117.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2117.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:06Z",
            "pc:count": 3078033,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99531.7861,
                "count": 3078033,
                "maximum": -99287.74284,
                "minimum": -99783.66284,
                "name": "X",
                "position": 0,
                "stddev": 133.6747522,
                "variance": 17868.93937
              },
              {
                "average": 2367886.846,
                "count": 3078033,
                "maximum": 2368123.774,
                "minimum": 2367650.154,
                "name": "Y",
                "position": 1,
                "stddev": 128.9279379,
                "variance": 16622.41316
              },
              {
                "average": 7.445267901,
                "count": 3078033,
                "maximum": 9.597906294,
                "minimum": 6.037906294,
                "name": "Z",
                "position": 2,
                "stddev": 0.6954415959,
                "variance": 0.4836390133
              },
              {
                "average": 41567.77066,
                "count": 3078033,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11586.48649,
                "variance": 134246669.3
              },
              {
                "average": 1.00000065,
                "count": 3078033,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008060802703,
                "variance": 6.497654022e-07
              },
              {
                "average": 1.0000013,
                "count": 3078033,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00113996928,
                "variance": 1.29952996e-06
              },
              {
                "average": 0.5018523193,
                "count": 3078033,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999966501,
                "variance": 0.2499966501
              },
              {
                "average": 0.0004074030395,
                "count": 3078033,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0201801188,
                "variance": 0.0004072371946
              },
              {
                "average": 1.296294744,
                "count": 3078033,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4578362551,
                "variance": 0.2096140365
              },
              {
                "average": 1.397447797,
                "count": 3078033,
                "maximum": 16.51799965,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.48631863,
                "variance": 109.9628784
              },
              {
                "average": 0.5279787449,
                "count": 3078033,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992166572,
                "variance": 0.2492172708
              },
              {
                "average": 410.775634,
                "count": 3078033,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9614958666,
                "variance": 0.9244743016
              },
              {
                "average": 220417732.3,
                "count": 3078033,
                "maximum": 220419026,
                "minimum": 220416802.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 528.0594993,
                "variance": 278846.8348
              },
              {
                "average": 0.5279787449,
                "count": 3078033,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992166572,
                "variance": 0.2492172708
              },
              {
                "average": 0,
                "count": 3078033,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3078033,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3078033,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2589254241,
                "count": 3078033,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4380446452,
                "variance": 0.1918831112
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99783.66284,
              2367650.154,
              6.037906294,
              -99287.74284,
              2368123.774,
              9.597906294
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99783.6628442607,
                    2367650.1542048533,
                    6.037906293587027
                  ],
                  [
                    -99783.6628442607,
                    2368123.7742048535,
                    6.037906293587027
                  ],
                  [
                    -99287.74284426069,
                    2368123.7742048535,
                    9.597906293587027
                  ],
                  [
                    -99287.74284426069,
                    2367650.1542048533,
                    9.597906293587027
                  ],
                  [
                    -99783.6628442607,
                    2367650.1542048533,
                    6.037906293587027
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:06+00:00",
            "end_time": "2018-09-08T04:40:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_1929.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8599820541547,
              71.26852759621532,
              0.909005119779448
            ],
            [
              -156.86051860567497,
              71.27273001954508,
              0.909005119779448
            ],
            [
              -156.84704356215195,
              71.27292557160037,
              1.529005119779448
            ],
            [
              -156.84650953195504,
              71.26872310608908,
              1.529005119779448
            ],
            [
              -156.8599820541547,
              71.26852759621532,
              0.909005119779448
            ]
          ]
        ]
      },
      "bbox": [
        -156.8605186,
        71.2685276,
        0.9090051198,
        -156.8465095,
        71.27292557,
        1.52900512
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:08Z",
        "pc:count": 1310940,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104786.9973,
            "count": 1310940,
            "maximum": -104574.1046,
            "minimum": -105069.6646,
            "name": "X",
            "position": 0,
            "stddev": 121.9205381,
            "variance": 14864.6176
          },
          {
            "average": 2365942.663,
            "count": 1310940,
            "maximum": 2366196.669,
            "minimum": 2365738.749,
            "name": "Y",
            "position": 1,
            "stddev": 121.9682204,
            "variance": 14876.24678
          },
          {
            "average": 1.180645386,
            "count": 1310940,
            "maximum": 1.52900512,
            "minimum": 0.9090051198,
            "name": "Z",
            "position": 2,
            "stddev": 0.0627634399,
            "variance": 0.003939249388
          },
          {
            "average": 16619.25744,
            "count": 1310940,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12570.24557,
            "variance": 158011073.6
          },
          {
            "average": 1,
            "count": 1310940,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1310940,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4954155034,
            "count": 1310940,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999791726,
            "variance": 0.2499791731
          },
          {
            "average": 0.0006918699559,
            "count": 1310940,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02629433017,
            "variance": 0.0006913917993
          },
          {
            "average": 7.828173677,
            "count": 1310940,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.294808366,
            "variance": 5.266145437
          },
          {
            "average": 1.999440135,
            "count": 1310940,
            "maximum": 16.29000092,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.20098427,
            "variance": 51.85417445
          },
          {
            "average": 0.4868087022,
            "count": 1310940,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49982615,
            "variance": 0.2498261802
          },
          {
            "average": 405.8414458,
            "count": 1310940,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6601801003,
            "variance": 0.4358377648
          },
          {
            "average": 220414942.2,
            "count": 1310940,
            "maximum": 220416028.4,
            "minimum": 220413774.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 361.6280607,
            "variance": 130774.8543
          },
          {
            "average": 0.4868087022,
            "count": 1310940,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49982615,
            "variance": 0.2498261802
          },
          {
            "average": 0,
            "count": 1310940,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1310940,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1310940,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03973026988,
            "count": 1310940,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1953248695,
            "variance": 0.03815180464
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105069.6646,
          2365738.749,
          0.9090051198,
          -104574.1046,
          2366196.669,
          1.52900512
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105069.66457970071,
                2365738.7485086815,
                0.909005119779448
              ],
              [
                -105069.66457970071,
                2366196.6685086815,
                0.909005119779448
              ],
              [
                -104574.10457970071,
                2366196.6685086815,
                1.529005119779448
              ],
              [
                -104574.10457970071,
                2365738.7485086815,
                1.529005119779448
              ],
              [
                -105069.66457970071,
                2365738.7485086815,
                0.909005119779448
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:08+00:00",
        "end_time": "2018-09-08T03:49:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_1929.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_1929.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_1929.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1929.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8605186,
            71.2685276,
            0.9090051198,
            -156.8465095,
            71.27292557,
            1.52900512
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8599820541547,
                  71.26852759621532,
                  0.909005119779448
                ],
                [
                  -156.86051860567497,
                  71.27273001954508,
                  0.909005119779448
                ],
                [
                  -156.84704356215195,
                  71.27292557160037,
                  1.529005119779448
                ],
                [
                  -156.84650953195504,
                  71.26872310608908,
                  1.529005119779448
                ],
                [
                  -156.8599820541547,
                  71.26852759621532,
                  0.909005119779448
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_1929.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_1929.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:08Z",
            "pc:count": 1310940,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104786.9973,
                "count": 1310940,
                "maximum": -104574.1046,
                "minimum": -105069.6646,
                "name": "X",
                "position": 0,
                "stddev": 121.9205381,
                "variance": 14864.6176
              },
              {
                "average": 2365942.663,
                "count": 1310940,
                "maximum": 2366196.669,
                "minimum": 2365738.749,
                "name": "Y",
                "position": 1,
                "stddev": 121.9682204,
                "variance": 14876.24678
              },
              {
                "average": 1.180645386,
                "count": 1310940,
                "maximum": 1.52900512,
                "minimum": 0.9090051198,
                "name": "Z",
                "position": 2,
                "stddev": 0.0627634399,
                "variance": 0.003939249388
              },
              {
                "average": 16619.25744,
                "count": 1310940,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12570.24557,
                "variance": 158011073.6
              },
              {
                "average": 1,
                "count": 1310940,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1310940,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4954155034,
                "count": 1310940,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999791726,
                "variance": 0.2499791731
              },
              {
                "average": 0.0006918699559,
                "count": 1310940,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02629433017,
                "variance": 0.0006913917993
              },
              {
                "average": 7.828173677,
                "count": 1310940,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.294808366,
                "variance": 5.266145437
              },
              {
                "average": 1.999440135,
                "count": 1310940,
                "maximum": 16.29000092,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.20098427,
                "variance": 51.85417445
              },
              {
                "average": 0.4868087022,
                "count": 1310940,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49982615,
                "variance": 0.2498261802
              },
              {
                "average": 405.8414458,
                "count": 1310940,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6601801003,
                "variance": 0.4358377648
              },
              {
                "average": 220414942.2,
                "count": 1310940,
                "maximum": 220416028.4,
                "minimum": 220413774.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 361.6280607,
                "variance": 130774.8543
              },
              {
                "average": 0.4868087022,
                "count": 1310940,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49982615,
                "variance": 0.2498261802
              },
              {
                "average": 0,
                "count": 1310940,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1310940,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1310940,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03973026988,
                "count": 1310940,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1953248695,
                "variance": 0.03815180464
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105069.6646,
              2365738.749,
              0.9090051198,
              -104574.1046,
              2366196.669,
              1.52900512
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105069.66457970071,
                    2365738.7485086815,
                    0.909005119779448
                  ],
                  [
                    -105069.66457970071,
                    2366196.6685086815,
                    0.909005119779448
                  ],
                  [
                    -104574.10457970071,
                    2366196.6685086815,
                    1.529005119779448
                  ],
                  [
                    -104574.10457970071,
                    2365738.7485086815,
                    1.529005119779448
                  ],
                  [
                    -105069.66457970071,
                    2365738.7485086815,
                    0.909005119779448
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:08+00:00",
            "end_time": "2018-09-08T03:49:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2013.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7702175939959,
              71.27615872851189,
              6.47520952238084
            ],
            [
              -156.7707553658739,
              71.28050607551097,
              6.47520952238084
            ],
            [
              -156.75726943621063,
              71.28069556623481,
              11.435209522380841
            ],
            [
              -156.7567342757655,
              71.27634817693347,
              11.435209522380841
            ],
            [
              -156.7702175939959,
              71.27615872851189,
              6.47520952238084
            ]
          ]
        ]
      },
      "bbox": [
        -156.7707554,
        71.27615873,
        6.475209522,
        -156.7567343,
        71.28069557,
        11.43520952
      ],
      "properties": {
        "datetime": "2018-09-08T05:05:29Z",
        "pc:count": 3157582,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101483.023,
            "count": 3157582,
            "maximum": -101243.4497,
            "minimum": -101739.2097,
            "name": "X",
            "position": 0,
            "stddev": 134.3385246,
            "variance": 18046.8392
          },
          {
            "average": 2366664.85,
            "count": 3157582,
            "maximum": 2366902.647,
            "minimum": 2366428.987,
            "name": "Y",
            "position": 1,
            "stddev": 126.7554132,
            "variance": 16066.93478
          },
          {
            "average": 9.713790696,
            "count": 3157582,
            "maximum": 11.43520952,
            "minimum": 6.475209522,
            "name": "Z",
            "position": 2,
            "stddev": 0.9009516727,
            "variance": 0.8117139166
          },
          {
            "average": 46671.92259,
            "count": 3157582,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7689.216905,
            "variance": 59124056.61
          },
          {
            "average": 1,
            "count": 3157582,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3157582,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5009130404,
            "count": 3157582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992455,
            "variance": 0.2499992455
          },
          {
            "average": 0.0004218417764,
            "count": 3157582,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02053445786,
            "variance": 0.0004216639595
          },
          {
            "average": 1.307834603,
            "count": 3157582,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4617315668,
            "variance": 0.2131960398
          },
          {
            "average": 0.3410050656,
            "count": 3157582,
            "maximum": 16.40399933,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59607655,
            "variance": 112.2768381
          },
          {
            "average": 0.5006967357,
            "count": 3157582,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999995937,
            "variance": 0.2499995937
          },
          {
            "average": 410.0197531,
            "count": 3157582,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9289458114,
            "variance": 0.8629403205
          },
          {
            "average": 220417347.9,
            "count": 3157582,
            "maximum": 220418329.7,
            "minimum": 220416074.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 524.8758448,
            "variance": 275494.6524
          },
          {
            "average": 0.5006967357,
            "count": 3157582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999995937,
            "variance": 0.2499995937
          },
          {
            "average": 0,
            "count": 3157582,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3157582,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3157582,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.241999416,
            "count": 3157582,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4282940074,
            "variance": 0.1834357568
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101739.2097,
          2366428.987,
          6.475209522,
          -101243.4497,
          2366902.647,
          11.43520952
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101739.2097146403,
                2366428.986884876,
                6.47520952238084
              ],
              [
                -101739.2097146403,
                2366902.6468848763,
                6.47520952238084
              ],
              [
                -101243.44971464029,
                2366902.6468848763,
                11.435209522380841
              ],
              [
                -101243.44971464029,
                2366428.986884876,
                11.435209522380841
              ],
              [
                -101739.2097146403,
                2366428.986884876,
                6.47520952238084
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:05:29+00:00",
        "end_time": "2018-09-08T04:27:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2013.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2013.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2013.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2013.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7707554,
            71.27615873,
            6.475209522,
            -156.7567343,
            71.28069557,
            11.43520952
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7702175939959,
                  71.27615872851189,
                  6.47520952238084
                ],
                [
                  -156.7707553658739,
                  71.28050607551097,
                  6.47520952238084
                ],
                [
                  -156.75726943621063,
                  71.28069556623481,
                  11.435209522380841
                ],
                [
                  -156.7567342757655,
                  71.27634817693347,
                  11.435209522380841
                ],
                [
                  -156.7702175939959,
                  71.27615872851189,
                  6.47520952238084
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2013.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2013.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:05:29Z",
            "pc:count": 3157582,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101483.023,
                "count": 3157582,
                "maximum": -101243.4497,
                "minimum": -101739.2097,
                "name": "X",
                "position": 0,
                "stddev": 134.3385246,
                "variance": 18046.8392
              },
              {
                "average": 2366664.85,
                "count": 3157582,
                "maximum": 2366902.647,
                "minimum": 2366428.987,
                "name": "Y",
                "position": 1,
                "stddev": 126.7554132,
                "variance": 16066.93478
              },
              {
                "average": 9.713790696,
                "count": 3157582,
                "maximum": 11.43520952,
                "minimum": 6.475209522,
                "name": "Z",
                "position": 2,
                "stddev": 0.9009516727,
                "variance": 0.8117139166
              },
              {
                "average": 46671.92259,
                "count": 3157582,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7689.216905,
                "variance": 59124056.61
              },
              {
                "average": 1,
                "count": 3157582,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3157582,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5009130404,
                "count": 3157582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992455,
                "variance": 0.2499992455
              },
              {
                "average": 0.0004218417764,
                "count": 3157582,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02053445786,
                "variance": 0.0004216639595
              },
              {
                "average": 1.307834603,
                "count": 3157582,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4617315668,
                "variance": 0.2131960398
              },
              {
                "average": 0.3410050656,
                "count": 3157582,
                "maximum": 16.40399933,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59607655,
                "variance": 112.2768381
              },
              {
                "average": 0.5006967357,
                "count": 3157582,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999995937,
                "variance": 0.2499995937
              },
              {
                "average": 410.0197531,
                "count": 3157582,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9289458114,
                "variance": 0.8629403205
              },
              {
                "average": 220417347.9,
                "count": 3157582,
                "maximum": 220418329.7,
                "minimum": 220416074.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 524.8758448,
                "variance": 275494.6524
              },
              {
                "average": 0.5006967357,
                "count": 3157582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999995937,
                "variance": 0.2499995937
              },
              {
                "average": 0,
                "count": 3157582,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3157582,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3157582,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.241999416,
                "count": 3157582,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4282940074,
                "variance": 0.1834357568
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101739.2097,
              2366428.987,
              6.475209522,
              -101243.4497,
              2366902.647,
              11.43520952
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101739.2097146403,
                    2366428.986884876,
                    6.47520952238084
                  ],
                  [
                    -101739.2097146403,
                    2366902.6468848763,
                    6.47520952238084
                  ],
                  [
                    -101243.44971464029,
                    2366902.6468848763,
                    11.435209522380841
                  ],
                  [
                    -101243.44971464029,
                    2366428.986884876,
                    11.435209522380841
                  ],
                  [
                    -101739.2097146403,
                    2366428.986884876,
                    6.47520952238084
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:05:29+00:00",
            "end_time": "2018-09-08T04:27:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2056.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66790608319243,
              71.27956109320324,
              5.478368807603579
            ],
            [
              -156.66842410515045,
              71.28390899784327,
              5.478368807603579
            ],
            [
              -156.65493201475323,
              71.28409152507298,
              15.058368807603578
            ],
            [
              -156.6544166064224,
              71.27974357967202,
              15.058368807603578
            ],
            [
              -156.66790608319243,
              71.27956109320324,
              5.478368807603579
            ]
          ]
        ]
      },
      "bbox": [
        -156.6684241,
        71.27956109,
        5.478368808,
        -156.6544166,
        71.28409153,
        15.05836881
      ],
      "properties": {
        "datetime": "2018-09-11T17:58:44Z",
        "pc:count": 3647888,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97710.46866,
            "count": 3647888,
            "maximum": -97473.01508,
            "minimum": -97968.89508,
            "name": "X",
            "position": 0,
            "stddev": 134.6332969,
            "variance": 18126.12465
          },
          {
            "average": 2366875.81,
            "count": 3647888,
            "maximum": 2367118.903,
            "minimum": 2366645.223,
            "name": "Y",
            "position": 1,
            "stddev": 125.6080457,
            "variance": 15777.38116
          },
          {
            "average": 5.855086563,
            "count": 3647888,
            "maximum": 15.05836881,
            "minimum": 5.478368808,
            "name": "Z",
            "position": 2,
            "stddev": 0.1926554195,
            "variance": 0.03711611068
          },
          {
            "average": 31441.56056,
            "count": 3647888,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8217.046748,
            "variance": 67519857.25
          },
          {
            "average": 1.000351984,
            "count": 3647888,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01903359355,
            "variance": 0.0003622776835
          },
          {
            "average": 1.000704243,
            "count": 3647888,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02711085235,
            "variance": 0.0007349983153
          },
          {
            "average": 0.504769335,
            "count": 3647888,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999773215,
            "variance": 0.249977322
          },
          {
            "average": 0.0005581311707,
            "count": 3647888,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02361820936,
            "variance": 0.0005578198132
          },
          {
            "average": 1.249018336,
            "count": 3647888,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.436496504,
            "variance": 0.190529198
          },
          {
            "average": -2.069360416,
            "count": 3647888,
            "maximum": 16.34399986,
            "minimum": -19.70400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.37489772,
            "variance": 129.3882982
          },
          {
            "average": 0.4931719395,
            "count": 3647888,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999534439,
            "variance": 0.2499534461
          },
          {
            "average": 424.7564991,
            "count": 3647888,
            "maximum": 459,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.32826753,
            "variance": 300.2688556
          },
          {
            "average": 220483167.6,
            "count": 3647888,
            "maximum": 220723924.9,
            "minimum": 220419452.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 122731.2545,
            "variance": 15062960840.0
          },
          {
            "average": 0.4931719395,
            "count": 3647888,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999534439,
            "variance": 0.2499534461
          },
          {
            "average": 0,
            "count": 3647888,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3647888,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3647888,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2486786875,
            "count": 3647888,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4322472083,
            "variance": 0.1868376491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97968.89508,
          2366645.223,
          5.478368808,
          -97473.01508,
          2367118.903,
          15.05836881
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97968.89508418931,
                2366645.2226975625,
                5.478368807603579
              ],
              [
                -97968.89508418931,
                2367118.9026975622,
                5.478368807603579
              ],
              [
                -97473.0150841893,
                2367118.9026975622,
                15.058368807603578
              ],
              [
                -97473.0150841893,
                2366645.2226975625,
                15.058368807603578
              ],
              [
                -97968.89508418931,
                2366645.2226975625,
                5.478368807603579
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:58:44+00:00",
        "end_time": "2018-09-08T05:24:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2056.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2056.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2056.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2056.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6684241,
            71.27956109,
            5.478368808,
            -156.6544166,
            71.28409153,
            15.05836881
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66790608319243,
                  71.27956109320324,
                  5.478368807603579
                ],
                [
                  -156.66842410515045,
                  71.28390899784327,
                  5.478368807603579
                ],
                [
                  -156.65493201475323,
                  71.28409152507298,
                  15.058368807603578
                ],
                [
                  -156.6544166064224,
                  71.27974357967202,
                  15.058368807603578
                ],
                [
                  -156.66790608319243,
                  71.27956109320324,
                  5.478368807603579
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2056.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2056.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:58:44Z",
            "pc:count": 3647888,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97710.46866,
                "count": 3647888,
                "maximum": -97473.01508,
                "minimum": -97968.89508,
                "name": "X",
                "position": 0,
                "stddev": 134.6332969,
                "variance": 18126.12465
              },
              {
                "average": 2366875.81,
                "count": 3647888,
                "maximum": 2367118.903,
                "minimum": 2366645.223,
                "name": "Y",
                "position": 1,
                "stddev": 125.6080457,
                "variance": 15777.38116
              },
              {
                "average": 5.855086563,
                "count": 3647888,
                "maximum": 15.05836881,
                "minimum": 5.478368808,
                "name": "Z",
                "position": 2,
                "stddev": 0.1926554195,
                "variance": 0.03711611068
              },
              {
                "average": 31441.56056,
                "count": 3647888,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8217.046748,
                "variance": 67519857.25
              },
              {
                "average": 1.000351984,
                "count": 3647888,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01903359355,
                "variance": 0.0003622776835
              },
              {
                "average": 1.000704243,
                "count": 3647888,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02711085235,
                "variance": 0.0007349983153
              },
              {
                "average": 0.504769335,
                "count": 3647888,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999773215,
                "variance": 0.249977322
              },
              {
                "average": 0.0005581311707,
                "count": 3647888,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02361820936,
                "variance": 0.0005578198132
              },
              {
                "average": 1.249018336,
                "count": 3647888,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.436496504,
                "variance": 0.190529198
              },
              {
                "average": -2.069360416,
                "count": 3647888,
                "maximum": 16.34399986,
                "minimum": -19.70400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.37489772,
                "variance": 129.3882982
              },
              {
                "average": 0.4931719395,
                "count": 3647888,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999534439,
                "variance": 0.2499534461
              },
              {
                "average": 424.7564991,
                "count": 3647888,
                "maximum": 459,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.32826753,
                "variance": 300.2688556
              },
              {
                "average": 220483167.6,
                "count": 3647888,
                "maximum": 220723924.9,
                "minimum": 220419452.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 122731.2545,
                "variance": 15062960840.0
              },
              {
                "average": 0.4931719395,
                "count": 3647888,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999534439,
                "variance": 0.2499534461
              },
              {
                "average": 0,
                "count": 3647888,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3647888,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3647888,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2486786875,
                "count": 3647888,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4322472083,
                "variance": 0.1868376491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97968.89508,
              2366645.223,
              5.478368808,
              -97473.01508,
              2367118.903,
              15.05836881
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97968.89508418931,
                    2366645.2226975625,
                    5.478368807603579
                  ],
                  [
                    -97968.89508418931,
                    2367118.9026975622,
                    5.478368807603579
                  ],
                  [
                    -97473.0150841893,
                    2367118.9026975622,
                    15.058368807603578
                  ],
                  [
                    -97473.0150841893,
                    2366645.2226975625,
                    15.058368807603578
                  ],
                  [
                    -97968.89508418931,
                    2366645.2226975625,
                    5.478368807603579
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:58:44+00:00",
            "end_time": "2018-09-08T05:24:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1732.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73355650070704,
              71.2513221745044,
              10.217980942568667
            ],
            [
              -156.73408675125228,
              71.25567036413035,
              10.217980942568667
            ],
            [
              -156.72061816396908,
              71.25585727408955,
              40.11798094256867
            ],
            [
              -156.7200905196699,
              71.25150904278914,
              40.11798094256867
            ],
            [
              -156.73355650070704,
              71.2513221745044,
              10.217980942568667
            ]
          ]
        ]
      },
      "bbox": [
        -156.7340868,
        71.25132217,
        10.21798094,
        -156.7200905,
        71.25585727,
        40.11798094
      ],
      "properties": {
        "datetime": "2018-09-11T18:26:45Z",
        "pc:count": 4193190,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100256.4958,
            "count": 4193190,
            "maximum": -100009.1636,
            "minimum": -100504.8236,
            "name": "X",
            "position": 0,
            "stddev": 134.6993577,
            "variance": 18143.91696
          },
          {
            "average": 2363899.663,
            "count": 4193190,
            "maximum": 2364145.357,
            "minimum": 2363671.537,
            "name": "Y",
            "position": 1,
            "stddev": 126.8261043,
            "variance": 16084.86073
          },
          {
            "average": 10.6747595,
            "count": 4193190,
            "maximum": 40.11798094,
            "minimum": 10.21798094,
            "name": "Z",
            "position": 2,
            "stddev": 0.160376013,
            "variance": 0.02572046554
          },
          {
            "average": 32767.21734,
            "count": 4193190,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10273.75922,
            "variance": 105550128.5
          },
          {
            "average": 1.000001192,
            "count": 4193190,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001091974569,
            "variance": 1.19240846e-06
          },
          {
            "average": 1.000002385,
            "count": 4193190,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001544284325,
            "variance": 2.384814076e-06
          },
          {
            "average": 0.4939685538,
            "count": 4193190,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999636799,
            "variance": 0.2499636813
          },
          {
            "average": 0.0005475544872,
            "count": 4193190,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02339347776,
            "variance": 0.0005472548018
          },
          {
            "average": 1.235910846,
            "count": 4193190,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4246089189,
            "variance": 0.180292734
          },
          {
            "average": 4.003665389,
            "count": 4193190,
            "maximum": 20.55599976,
            "minimum": -16.00200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.03342494,
            "variance": 121.736466
          },
          {
            "average": 0.5048900718,
            "count": 4193190,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999761462,
            "variance": 0.2499761468
          },
          {
            "average": 430.0711807,
            "count": 4193190,
            "maximum": 464,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.13713359,
            "variance": 405.5041493
          },
          {
            "average": 220502568.5,
            "count": 4193190,
            "maximum": 220725605.6,
            "minimum": 220420482.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 134283.9943,
            "variance": 18032191130.0
          },
          {
            "average": 0.5048900718,
            "count": 4193190,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999761462,
            "variance": 0.2499761468
          },
          {
            "average": 0,
            "count": 4193190,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4193190,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4193190,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2488108099,
            "count": 4193190,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4323239935,
            "variance": 0.1869040354
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100504.8236,
          2363671.537,
          10.21798094,
          -100009.1636,
          2364145.357,
          40.11798094
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100504.82357907857,
                2363671.537244759,
                10.217980942568667
              ],
              [
                -100504.82357907857,
                2364145.3572447593,
                10.217980942568667
              ],
              [
                -100009.16357907857,
                2364145.3572447593,
                40.11798094256867
              ],
              [
                -100009.16357907857,
                2363671.537244759,
                40.11798094256867
              ],
              [
                -100504.82357907857,
                2363671.537244759,
                10.217980942568667
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:26:45+00:00",
        "end_time": "2018-09-08T05:41:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1732.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1732.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1732.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1732.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7340868,
            71.25132217,
            10.21798094,
            -156.7200905,
            71.25585727,
            40.11798094
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73355650070704,
                  71.2513221745044,
                  10.217980942568667
                ],
                [
                  -156.73408675125228,
                  71.25567036413035,
                  10.217980942568667
                ],
                [
                  -156.72061816396908,
                  71.25585727408955,
                  40.11798094256867
                ],
                [
                  -156.7200905196699,
                  71.25150904278914,
                  40.11798094256867
                ],
                [
                  -156.73355650070704,
                  71.2513221745044,
                  10.217980942568667
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1732.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1732.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:26:45Z",
            "pc:count": 4193190,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100256.4958,
                "count": 4193190,
                "maximum": -100009.1636,
                "minimum": -100504.8236,
                "name": "X",
                "position": 0,
                "stddev": 134.6993577,
                "variance": 18143.91696
              },
              {
                "average": 2363899.663,
                "count": 4193190,
                "maximum": 2364145.357,
                "minimum": 2363671.537,
                "name": "Y",
                "position": 1,
                "stddev": 126.8261043,
                "variance": 16084.86073
              },
              {
                "average": 10.6747595,
                "count": 4193190,
                "maximum": 40.11798094,
                "minimum": 10.21798094,
                "name": "Z",
                "position": 2,
                "stddev": 0.160376013,
                "variance": 0.02572046554
              },
              {
                "average": 32767.21734,
                "count": 4193190,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10273.75922,
                "variance": 105550128.5
              },
              {
                "average": 1.000001192,
                "count": 4193190,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001091974569,
                "variance": 1.19240846e-06
              },
              {
                "average": 1.000002385,
                "count": 4193190,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001544284325,
                "variance": 2.384814076e-06
              },
              {
                "average": 0.4939685538,
                "count": 4193190,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999636799,
                "variance": 0.2499636813
              },
              {
                "average": 0.0005475544872,
                "count": 4193190,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02339347776,
                "variance": 0.0005472548018
              },
              {
                "average": 1.235910846,
                "count": 4193190,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4246089189,
                "variance": 0.180292734
              },
              {
                "average": 4.003665389,
                "count": 4193190,
                "maximum": 20.55599976,
                "minimum": -16.00200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.03342494,
                "variance": 121.736466
              },
              {
                "average": 0.5048900718,
                "count": 4193190,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999761462,
                "variance": 0.2499761468
              },
              {
                "average": 430.0711807,
                "count": 4193190,
                "maximum": 464,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.13713359,
                "variance": 405.5041493
              },
              {
                "average": 220502568.5,
                "count": 4193190,
                "maximum": 220725605.6,
                "minimum": 220420482.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 134283.9943,
                "variance": 18032191130.0
              },
              {
                "average": 0.5048900718,
                "count": 4193190,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999761462,
                "variance": 0.2499761468
              },
              {
                "average": 0,
                "count": 4193190,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4193190,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4193190,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2488108099,
                "count": 4193190,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4323239935,
                "variance": 0.1869040354
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100504.8236,
              2363671.537,
              10.21798094,
              -100009.1636,
              2364145.357,
              40.11798094
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100504.82357907857,
                    2363671.537244759,
                    10.217980942568667
                  ],
                  [
                    -100504.82357907857,
                    2364145.3572447593,
                    10.217980942568667
                  ],
                  [
                    -100009.16357907857,
                    2364145.3572447593,
                    40.11798094256867
                  ],
                  [
                    -100009.16357907857,
                    2363671.537244759,
                    40.11798094256867
                  ],
                  [
                    -100504.82357907857,
                    2363671.537244759,
                    10.217980942568667
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:26:45+00:00",
            "end_time": "2018-09-08T05:41:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1622.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77228973733972,
              71.24338187711159,
              9.492435697059976
            ],
            [
              -156.77282723854674,
              71.24772917977018,
              9.492435697059976
            ],
            [
              -156.75936211288962,
              71.24791875613573,
              12.172435697059976
            ],
            [
              -156.7588272158182,
              71.24357141123613,
              12.172435697059976
            ],
            [
              -156.77228973733972,
              71.24338187711159,
              9.492435697059976
            ]
          ]
        ]
      },
      "bbox": [
        -156.7728272,
        71.24338188,
        9.492435697,
        -156.7588272,
        71.24791876,
        12.1724357
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:28Z",
        "pc:count": 2909958,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101684.328,
            "count": 2909958,
            "maximum": -101468.4689,
            "minimum": -101964.1889,
            "name": "X",
            "position": 0,
            "stddev": 134.4900082,
            "variance": 18087.5623
          },
          {
            "average": 2363107.542,
            "count": 2909958,
            "maximum": 2363340.531,
            "minimum": 2362866.771,
            "name": "Y",
            "position": 1,
            "stddev": 131.5405209,
            "variance": 17302.90864
          },
          {
            "average": 9.785491982,
            "count": 2909958,
            "maximum": 12.1724357,
            "minimum": 9.492435697,
            "name": "Z",
            "position": 2,
            "stddev": 0.1369174609,
            "variance": 0.01874639111
          },
          {
            "average": 27987.28102,
            "count": 2909958,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13551.90379,
            "variance": 183654096.4
          },
          {
            "average": 1.000000344,
            "count": 2909958,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005862146122,
            "variance": 3.436475715e-07
          },
          {
            "average": 1.000000687,
            "count": 2909958,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008290325126,
            "variance": 6.872949069e-07
          },
          {
            "average": 0.5023316488,
            "count": 2909958,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999946493,
            "variance": 0.2499946493
          },
          {
            "average": 0.0006096307919,
            "count": 2909958,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02468317953,
            "variance": 0.0006092593516
          },
          {
            "average": 4.390753406,
            "count": 2909958,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.746779572,
            "variance": 14.03835716
          },
          {
            "average": -1.711511931,
            "count": 2909958,
            "maximum": 20.52599907,
            "minimum": -19.86000061,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.109865235,
            "variance": 82.9896446
          },
          {
            "average": 0.4787268407,
            "count": 2909958,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995473335,
            "variance": 0.2495475385
          },
          {
            "average": 429.0358112,
            "count": 2909958,
            "maximum": 466,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.54671379,
            "variance": 422.1674475
          },
          {
            "average": 220496838.1,
            "count": 2909958,
            "maximum": 220726548.3,
            "minimum": 220420179.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 131613.5212,
            "variance": 17322118970.0
          },
          {
            "average": 0.4787268407,
            "count": 2909958,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995473335,
            "variance": 0.2495475385
          },
          {
            "average": 0,
            "count": 2909958,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2909958,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2909958,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1314469144,
            "count": 2909958,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3378885353,
            "variance": 0.1141686623
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101964.1889,
          2362866.771,
          9.492435697,
          -101468.4689,
          2363340.531,
          12.1724357
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101964.18886882409,
                2362866.770672936,
                9.492435697059976
              ],
              [
                -101964.18886882409,
                2363340.530672936,
                9.492435697059976
              ],
              [
                -101468.46886882409,
                2363340.530672936,
                12.172435697059976
              ],
              [
                -101468.46886882409,
                2362866.770672936,
                12.172435697059976
              ],
              [
                -101964.18886882409,
                2362866.770672936,
                9.492435697059976
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:28+00:00",
        "end_time": "2018-09-08T05:36:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1622.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1622.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1622.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1622.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7728272,
            71.24338188,
            9.492435697,
            -156.7588272,
            71.24791876,
            12.1724357
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77228973733972,
                  71.24338187711159,
                  9.492435697059976
                ],
                [
                  -156.77282723854674,
                  71.24772917977018,
                  9.492435697059976
                ],
                [
                  -156.75936211288962,
                  71.24791875613573,
                  12.172435697059976
                ],
                [
                  -156.7588272158182,
                  71.24357141123613,
                  12.172435697059976
                ],
                [
                  -156.77228973733972,
                  71.24338187711159,
                  9.492435697059976
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1622.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1622.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:28Z",
            "pc:count": 2909958,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101684.328,
                "count": 2909958,
                "maximum": -101468.4689,
                "minimum": -101964.1889,
                "name": "X",
                "position": 0,
                "stddev": 134.4900082,
                "variance": 18087.5623
              },
              {
                "average": 2363107.542,
                "count": 2909958,
                "maximum": 2363340.531,
                "minimum": 2362866.771,
                "name": "Y",
                "position": 1,
                "stddev": 131.5405209,
                "variance": 17302.90864
              },
              {
                "average": 9.785491982,
                "count": 2909958,
                "maximum": 12.1724357,
                "minimum": 9.492435697,
                "name": "Z",
                "position": 2,
                "stddev": 0.1369174609,
                "variance": 0.01874639111
              },
              {
                "average": 27987.28102,
                "count": 2909958,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13551.90379,
                "variance": 183654096.4
              },
              {
                "average": 1.000000344,
                "count": 2909958,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005862146122,
                "variance": 3.436475715e-07
              },
              {
                "average": 1.000000687,
                "count": 2909958,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008290325126,
                "variance": 6.872949069e-07
              },
              {
                "average": 0.5023316488,
                "count": 2909958,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999946493,
                "variance": 0.2499946493
              },
              {
                "average": 0.0006096307919,
                "count": 2909958,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02468317953,
                "variance": 0.0006092593516
              },
              {
                "average": 4.390753406,
                "count": 2909958,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.746779572,
                "variance": 14.03835716
              },
              {
                "average": -1.711511931,
                "count": 2909958,
                "maximum": 20.52599907,
                "minimum": -19.86000061,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.109865235,
                "variance": 82.9896446
              },
              {
                "average": 0.4787268407,
                "count": 2909958,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995473335,
                "variance": 0.2495475385
              },
              {
                "average": 429.0358112,
                "count": 2909958,
                "maximum": 466,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.54671379,
                "variance": 422.1674475
              },
              {
                "average": 220496838.1,
                "count": 2909958,
                "maximum": 220726548.3,
                "minimum": 220420179.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 131613.5212,
                "variance": 17322118970.0
              },
              {
                "average": 0.4787268407,
                "count": 2909958,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995473335,
                "variance": 0.2495475385
              },
              {
                "average": 0,
                "count": 2909958,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2909958,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2909958,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1314469144,
                "count": 2909958,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3378885353,
                "variance": 0.1141686623
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101964.1889,
              2362866.771,
              9.492435697,
              -101468.4689,
              2363340.531,
              12.1724357
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101964.18886882409,
                    2362866.770672936,
                    9.492435697059976
                  ],
                  [
                    -101964.18886882409,
                    2363340.530672936,
                    9.492435697059976
                  ],
                  [
                    -101468.46886882409,
                    2363340.530672936,
                    12.172435697059976
                  ],
                  [
                    -101468.46886882409,
                    2362866.770672936,
                    12.172435697059976
                  ],
                  [
                    -101964.18886882409,
                    2362866.770672936,
                    9.492435697059976
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:28+00:00",
            "end_time": "2018-09-08T05:36:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1937.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7579871726683,
              71.26788083454576,
              8.38362380929085
            ],
            [
              -156.7585224417527,
              71.27222852346779,
              8.38362380929085
            ],
            [
              -156.74504247699537,
              71.27241715050113,
              46.703623809290846
            ],
            [
              -156.74450981761547,
              71.26806941948645,
              46.703623809290846
            ],
            [
              -156.7579871726683,
              71.26788083454576,
              8.38362380929085
            ]
          ]
        ]
      },
      "bbox": [
        -156.7585224,
        71.26788083,
        8.383623809,
        -156.7445098,
        71.27241715,
        46.70362381
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:25Z",
        "pc:count": 3102364,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101085.7716,
            "count": 3102364,
            "maximum": -100831.9868,
            "minimum": -101327.7068,
            "name": "X",
            "position": 0,
            "stddev": 133.7852826,
            "variance": 17898.50184
          },
          {
            "average": 2365745.767,
            "count": 3102364,
            "maximum": 2365983.627,
            "minimum": 2365509.907,
            "name": "Y",
            "position": 1,
            "stddev": 130.1937496,
            "variance": 16950.41244
          },
          {
            "average": 10.44672191,
            "count": 3102364,
            "maximum": 46.70362381,
            "minimum": 8.383623809,
            "name": "Z",
            "position": 2,
            "stddev": 0.9196870341,
            "variance": 0.8458242408
          },
          {
            "average": 43848.15986,
            "count": 3102364,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9255.259391,
            "variance": 85659826.4
          },
          {
            "average": 1.000002256,
            "count": 3102364,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001502111683,
            "variance": 2.256339508e-06
          },
          {
            "average": 1.000004513,
            "count": 3102364,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002124304318,
            "variance": 4.512668834e-06
          },
          {
            "average": 0.503934419,
            "count": 3102364,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999846007,
            "variance": 0.2499846009
          },
          {
            "average": 0.0004025962137,
            "count": 3102364,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02006076419,
            "variance": 0.0004024342597
          },
          {
            "average": 1.306591361,
            "count": 3102364,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.461448634,
            "variance": 0.2129348418
          },
          {
            "average": 0.6337338749,
            "count": 3102364,
            "maximum": 16.34399986,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5655627,
            "variance": 111.6311152
          },
          {
            "average": 0.5348859773,
            "count": 3102364,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987815642,
            "variance": 0.2487830488
          },
          {
            "average": 412.5965232,
            "count": 3102364,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.962573785,
            "variance": 0.9265482916
          },
          {
            "average": 220418736.9,
            "count": 3102364,
            "maximum": 220419405.1,
            "minimum": 220417964.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.7335989,
            "variance": 264950.6778
          },
          {
            "average": 0.5348859773,
            "count": 3102364,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987815642,
            "variance": 0.2487830488
          },
          {
            "average": 0,
            "count": 3102364,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3102364,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3102364,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2539708429,
            "count": 3102364,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4352811906,
            "variance": 0.1894697149
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101327.7068,
          2365509.907,
          8.383623809,
          -100831.9868,
          2365983.627,
          46.70362381
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101327.7068317184,
                2365509.9070383003,
                8.38362380929085
              ],
              [
                -101327.7068317184,
                2365983.6270383,
                8.38362380929085
              ],
              [
                -100831.9868317184,
                2365983.6270383,
                46.703623809290846
              ],
              [
                -100831.9868317184,
                2365509.9070383003,
                46.703623809290846
              ],
              [
                -101327.7068317184,
                2365509.9070383003,
                8.38362380929085
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:25+00:00",
        "end_time": "2018-09-08T04:59:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1937.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1937.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1937.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1937.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7585224,
            71.26788083,
            8.383623809,
            -156.7445098,
            71.27241715,
            46.70362381
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7579871726683,
                  71.26788083454576,
                  8.38362380929085
                ],
                [
                  -156.7585224417527,
                  71.27222852346779,
                  8.38362380929085
                ],
                [
                  -156.74504247699537,
                  71.27241715050113,
                  46.703623809290846
                ],
                [
                  -156.74450981761547,
                  71.26806941948645,
                  46.703623809290846
                ],
                [
                  -156.7579871726683,
                  71.26788083454576,
                  8.38362380929085
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1937.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1937.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:25Z",
            "pc:count": 3102364,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101085.7716,
                "count": 3102364,
                "maximum": -100831.9868,
                "minimum": -101327.7068,
                "name": "X",
                "position": 0,
                "stddev": 133.7852826,
                "variance": 17898.50184
              },
              {
                "average": 2365745.767,
                "count": 3102364,
                "maximum": 2365983.627,
                "minimum": 2365509.907,
                "name": "Y",
                "position": 1,
                "stddev": 130.1937496,
                "variance": 16950.41244
              },
              {
                "average": 10.44672191,
                "count": 3102364,
                "maximum": 46.70362381,
                "minimum": 8.383623809,
                "name": "Z",
                "position": 2,
                "stddev": 0.9196870341,
                "variance": 0.8458242408
              },
              {
                "average": 43848.15986,
                "count": 3102364,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9255.259391,
                "variance": 85659826.4
              },
              {
                "average": 1.000002256,
                "count": 3102364,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001502111683,
                "variance": 2.256339508e-06
              },
              {
                "average": 1.000004513,
                "count": 3102364,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002124304318,
                "variance": 4.512668834e-06
              },
              {
                "average": 0.503934419,
                "count": 3102364,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999846007,
                "variance": 0.2499846009
              },
              {
                "average": 0.0004025962137,
                "count": 3102364,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02006076419,
                "variance": 0.0004024342597
              },
              {
                "average": 1.306591361,
                "count": 3102364,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.461448634,
                "variance": 0.2129348418
              },
              {
                "average": 0.6337338749,
                "count": 3102364,
                "maximum": 16.34399986,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5655627,
                "variance": 111.6311152
              },
              {
                "average": 0.5348859773,
                "count": 3102364,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987815642,
                "variance": 0.2487830488
              },
              {
                "average": 412.5965232,
                "count": 3102364,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.962573785,
                "variance": 0.9265482916
              },
              {
                "average": 220418736.9,
                "count": 3102364,
                "maximum": 220419405.1,
                "minimum": 220417964.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.7335989,
                "variance": 264950.6778
              },
              {
                "average": 0.5348859773,
                "count": 3102364,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987815642,
                "variance": 0.2487830488
              },
              {
                "average": 0,
                "count": 3102364,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3102364,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3102364,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2539708429,
                "count": 3102364,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4352811906,
                "variance": 0.1894697149
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101327.7068,
              2365509.907,
              8.383623809,
              -100831.9868,
              2365983.627,
              46.70362381
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101327.7068317184,
                    2365509.9070383003,
                    8.38362380929085
                  ],
                  [
                    -101327.7068317184,
                    2365983.6270383,
                    8.38362380929085
                  ],
                  [
                    -100831.9868317184,
                    2365983.6270383,
                    46.703623809290846
                  ],
                  [
                    -100831.9868317184,
                    2365509.9070383003,
                    46.703623809290846
                  ],
                  [
                    -101327.7068317184,
                    2365509.9070383003,
                    8.38362380929085
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:25+00:00",
            "end_time": "2018-09-08T04:59:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1835.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75851024726867,
              71.25968643130904,
              11.04271087622068
            ],
            [
              -156.75904542215235,
              71.26403387950573,
              11.04271087622068
            ],
            [
              -156.7455693009931,
              71.26422254733275,
              14.102710876220678
            ],
            [
              -156.7450367341139,
              71.25987505705653,
              14.102710876220678
            ],
            [
              -156.75851024726867,
              71.25968643130904,
              11.04271087622068
            ]
          ]
        ]
      },
      "bbox": [
        -156.7590454,
        71.25968643,
        11.04271088,
        -156.7450367,
        71.26422255,
        14.10271088
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:09Z",
        "pc:count": 3201269,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101137.8595,
            "count": 3201269,
            "maximum": -100888.1987,
            "minimum": -101383.9587,
            "name": "X",
            "position": 0,
            "stddev": 134.7828434,
            "variance": 18166.41487
          },
          {
            "average": 2364860.913,
            "count": 3201269,
            "maximum": 2365093.073,
            "minimum": 2364619.353,
            "name": "Y",
            "position": 1,
            "stddev": 129.9674961,
            "variance": 16891.55005
          },
          {
            "average": 12.04461462,
            "count": 3201269,
            "maximum": 14.10271088,
            "minimum": 11.04271088,
            "name": "Z",
            "position": 2,
            "stddev": 0.818985625,
            "variance": 0.670737454
          },
          {
            "average": 39797.30304,
            "count": 3201269,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13087.45966,
            "variance": 171281600.3
          },
          {
            "average": 1,
            "count": 3201269,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3201269,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5036637034,
            "count": 3201269,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999866552,
            "variance": 0.2499866554
          },
          {
            "average": 0.0004117117306,
            "count": 3201269,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02028650666,
            "variance": 0.0004115423526
          },
          {
            "average": 1.300367136,
            "count": 3201269,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4585709917,
            "variance": 0.2102873544
          },
          {
            "average": 0.9523744285,
            "count": 3201269,
            "maximum": 16.4279995,
            "minimum": -19.54199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.64742409,
            "variance": 113.3676397
          },
          {
            "average": 0.5394691917,
            "count": 3201269,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984398264,
            "variance": 0.2484422605
          },
          {
            "average": 414.7275799,
            "count": 3201269,
            "maximum": 463,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 4.08275141,
            "variance": 16.66885908
          },
          {
            "average": 220421780.1,
            "count": 3201269,
            "maximum": 220725449.4,
            "minimum": 220419074.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 24939.28024,
            "variance": 621967699.1
          },
          {
            "average": 0.5394691917,
            "count": 3201269,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984398264,
            "variance": 0.2484422605
          },
          {
            "average": 0,
            "count": 3201269,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3201269,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3201269,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2588401662,
            "count": 3201269,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4379977106,
            "variance": 0.1918419945
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101383.9587,
          2364619.353,
          11.04271088,
          -100888.1987,
          2365093.073,
          14.10271088
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101383.95873518348,
                2364619.352791024,
                11.04271087622068
              ],
              [
                -101383.95873518348,
                2365093.0727910236,
                11.04271087622068
              ],
              [
                -100888.19873518347,
                2365093.0727910236,
                14.102710876220678
              ],
              [
                -100888.19873518347,
                2364619.352791024,
                14.102710876220678
              ],
              [
                -101383.95873518348,
                2364619.352791024,
                11.04271087622068
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:09+00:00",
        "end_time": "2018-09-08T05:17:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1835.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1835.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1835.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1835.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7590454,
            71.25968643,
            11.04271088,
            -156.7450367,
            71.26422255,
            14.10271088
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75851024726867,
                  71.25968643130904,
                  11.04271087622068
                ],
                [
                  -156.75904542215235,
                  71.26403387950573,
                  11.04271087622068
                ],
                [
                  -156.7455693009931,
                  71.26422254733275,
                  14.102710876220678
                ],
                [
                  -156.7450367341139,
                  71.25987505705653,
                  14.102710876220678
                ],
                [
                  -156.75851024726867,
                  71.25968643130904,
                  11.04271087622068
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1835.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1835.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:09Z",
            "pc:count": 3201269,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101137.8595,
                "count": 3201269,
                "maximum": -100888.1987,
                "minimum": -101383.9587,
                "name": "X",
                "position": 0,
                "stddev": 134.7828434,
                "variance": 18166.41487
              },
              {
                "average": 2364860.913,
                "count": 3201269,
                "maximum": 2365093.073,
                "minimum": 2364619.353,
                "name": "Y",
                "position": 1,
                "stddev": 129.9674961,
                "variance": 16891.55005
              },
              {
                "average": 12.04461462,
                "count": 3201269,
                "maximum": 14.10271088,
                "minimum": 11.04271088,
                "name": "Z",
                "position": 2,
                "stddev": 0.818985625,
                "variance": 0.670737454
              },
              {
                "average": 39797.30304,
                "count": 3201269,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13087.45966,
                "variance": 171281600.3
              },
              {
                "average": 1,
                "count": 3201269,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3201269,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5036637034,
                "count": 3201269,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999866552,
                "variance": 0.2499866554
              },
              {
                "average": 0.0004117117306,
                "count": 3201269,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02028650666,
                "variance": 0.0004115423526
              },
              {
                "average": 1.300367136,
                "count": 3201269,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4585709917,
                "variance": 0.2102873544
              },
              {
                "average": 0.9523744285,
                "count": 3201269,
                "maximum": 16.4279995,
                "minimum": -19.54199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.64742409,
                "variance": 113.3676397
              },
              {
                "average": 0.5394691917,
                "count": 3201269,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984398264,
                "variance": 0.2484422605
              },
              {
                "average": 414.7275799,
                "count": 3201269,
                "maximum": 463,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 4.08275141,
                "variance": 16.66885908
              },
              {
                "average": 220421780.1,
                "count": 3201269,
                "maximum": 220725449.4,
                "minimum": 220419074.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 24939.28024,
                "variance": 621967699.1
              },
              {
                "average": 0.5394691917,
                "count": 3201269,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984398264,
                "variance": 0.2484422605
              },
              {
                "average": 0,
                "count": 3201269,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3201269,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3201269,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2588401662,
                "count": 3201269,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4379977106,
                "variance": 0.1918419945
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101383.9587,
              2364619.353,
              11.04271088,
              -100888.1987,
              2365093.073,
              14.10271088
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101383.95873518348,
                    2364619.352791024,
                    11.04271087622068
                  ],
                  [
                    -101383.95873518348,
                    2365093.0727910236,
                    11.04271087622068
                  ],
                  [
                    -100888.19873518347,
                    2365093.0727910236,
                    14.102710876220678
                  ],
                  [
                    -100888.19873518347,
                    2364619.352791024,
                    14.102710876220678
                  ],
                  [
                    -101383.95873518348,
                    2364619.352791024,
                    11.04271087622068
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:09+00:00",
            "end_time": "2018-09-08T05:17:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2118.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7056294382848,
              71.2880217830602,
              2.878209863474737
            ],
            [
              -156.70615497934256,
              71.29236983574401,
              2.878209863474737
            ],
            [
              -156.692658100957,
              71.29255495939343,
              7.058209863474737
            ],
            [
              -156.69213517526126,
              71.28820686534728,
              7.058209863474737
            ],
            [
              -156.7056294382848,
              71.2880217830602,
              2.878209863474737
            ]
          ]
        ]
      },
      "bbox": [
        -156.706155,
        71.28802178,
        2.878209863,
        -156.6921352,
        71.29255496,
        7.058209863
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:05Z",
        "pc:count": 2973894,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99066.5342,
            "count": 2973894,
            "maximum": -98819.99209,
            "minimum": -99315.87209,
            "name": "X",
            "position": 0,
            "stddev": 136.5533112,
            "variance": 18646.80679
          },
          {
            "average": 2367856.408,
            "count": 2973894,
            "maximum": 2368095.169,
            "minimum": 2367621.489,
            "name": "Y",
            "position": 1,
            "stddev": 131.1440776,
            "variance": 17198.7691
          },
          {
            "average": 5.779777065,
            "count": 2973894,
            "maximum": 7.058209863,
            "minimum": 2.878209863,
            "name": "Z",
            "position": 2,
            "stddev": 0.5141328894,
            "variance": 0.264332628
          },
          {
            "average": 34645.56898,
            "count": 2973894,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11875.45841,
            "variance": 141026512.5
          },
          {
            "average": 1,
            "count": 2973894,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2973894,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995080524,
            "count": 2973894,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998421,
            "variance": 0.2499998421
          },
          {
            "average": 0.0004166254749,
            "count": 2973894,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02040715654,
            "variance": 0.0004164520381
          },
          {
            "average": 1.308498891,
            "count": 2973894,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4630444392,
            "variance": 0.2144101527
          },
          {
            "average": -0.8216809602,
            "count": 2973894,
            "maximum": 16.27199936,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32580485,
            "variance": 106.6222458
          },
          {
            "average": 0.4574692306,
            "count": 2973894,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981879335,
            "variance": 0.2481912171
          },
          {
            "average": 411.5837555,
            "count": 2973894,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9764478839,
            "variance": 0.9534504699
          },
          {
            "average": 220418194.7,
            "count": 2973894,
            "maximum": 220419025.8,
            "minimum": 220417250,
            "name": "GpsTime",
            "position": 12,
            "stddev": 553.2947119,
            "variance": 306135.0382
          },
          {
            "average": 0.4574692306,
            "count": 2973894,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981879335,
            "variance": 0.2481912171
          },
          {
            "average": 0,
            "count": 2973894,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2973894,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2973894,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2252161644,
            "count": 2973894,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4177246729,
            "variance": 0.1744939024
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99315.87209,
          2367621.489,
          2.878209863,
          -98819.99209,
          2368095.169,
          7.058209863
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99315.87208937123,
                2367621.4892554916,
                2.878209863474737
              ],
              [
                -99315.87208937123,
                2368095.1692554913,
                2.878209863474737
              ],
              [
                -98819.99208937123,
                2368095.1692554913,
                7.058209863474737
              ],
              [
                -98819.99208937123,
                2367621.4892554916,
                7.058209863474737
              ],
              [
                -99315.87208937123,
                2367621.4892554916,
                2.878209863474737
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:05+00:00",
        "end_time": "2018-09-08T04:47:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2118.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2118.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2118.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2118.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.706155,
            71.28802178,
            2.878209863,
            -156.6921352,
            71.29255496,
            7.058209863
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7056294382848,
                  71.2880217830602,
                  2.878209863474737
                ],
                [
                  -156.70615497934256,
                  71.29236983574401,
                  2.878209863474737
                ],
                [
                  -156.692658100957,
                  71.29255495939343,
                  7.058209863474737
                ],
                [
                  -156.69213517526126,
                  71.28820686534728,
                  7.058209863474737
                ],
                [
                  -156.7056294382848,
                  71.2880217830602,
                  2.878209863474737
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2118.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2118.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:05Z",
            "pc:count": 2973894,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99066.5342,
                "count": 2973894,
                "maximum": -98819.99209,
                "minimum": -99315.87209,
                "name": "X",
                "position": 0,
                "stddev": 136.5533112,
                "variance": 18646.80679
              },
              {
                "average": 2367856.408,
                "count": 2973894,
                "maximum": 2368095.169,
                "minimum": 2367621.489,
                "name": "Y",
                "position": 1,
                "stddev": 131.1440776,
                "variance": 17198.7691
              },
              {
                "average": 5.779777065,
                "count": 2973894,
                "maximum": 7.058209863,
                "minimum": 2.878209863,
                "name": "Z",
                "position": 2,
                "stddev": 0.5141328894,
                "variance": 0.264332628
              },
              {
                "average": 34645.56898,
                "count": 2973894,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11875.45841,
                "variance": 141026512.5
              },
              {
                "average": 1,
                "count": 2973894,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2973894,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995080524,
                "count": 2973894,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998421,
                "variance": 0.2499998421
              },
              {
                "average": 0.0004166254749,
                "count": 2973894,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02040715654,
                "variance": 0.0004164520381
              },
              {
                "average": 1.308498891,
                "count": 2973894,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4630444392,
                "variance": 0.2144101527
              },
              {
                "average": -0.8216809602,
                "count": 2973894,
                "maximum": 16.27199936,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32580485,
                "variance": 106.6222458
              },
              {
                "average": 0.4574692306,
                "count": 2973894,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981879335,
                "variance": 0.2481912171
              },
              {
                "average": 411.5837555,
                "count": 2973894,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9764478839,
                "variance": 0.9534504699
              },
              {
                "average": 220418194.7,
                "count": 2973894,
                "maximum": 220419025.8,
                "minimum": 220417250,
                "name": "GpsTime",
                "position": 12,
                "stddev": 553.2947119,
                "variance": 306135.0382
              },
              {
                "average": 0.4574692306,
                "count": 2973894,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981879335,
                "variance": 0.2481912171
              },
              {
                "average": 0,
                "count": 2973894,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2973894,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2973894,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2252161644,
                "count": 2973894,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4177246729,
                "variance": 0.1744939024
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99315.87209,
              2367621.489,
              2.878209863,
              -98819.99209,
              2368095.169,
              7.058209863
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99315.87208937123,
                    2367621.4892554916,
                    2.878209863474737
                  ],
                  [
                    -99315.87208937123,
                    2368095.1692554913,
                    2.878209863474737
                  ],
                  [
                    -98819.99208937123,
                    2368095.1692554913,
                    7.058209863474737
                  ],
                  [
                    -98819.99208937123,
                    2367621.4892554916,
                    7.058209863474737
                  ],
                  [
                    -99315.87208937123,
                    2367621.4892554916,
                    2.878209863474737
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:05+00:00",
            "end_time": "2018-09-08T04:47:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1619.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81048678315673,
              71.24362773153604,
              9.958906858417965
            ],
            [
              -156.81103171472557,
              71.24797511968882,
              9.958906858417965
            ],
            [
              -156.7975721982577,
              71.24816723584982,
              42.39890685841796
            ],
            [
              -156.79702986968928,
              71.24381980488862,
              42.39890685841796
            ],
            [
              -156.81048678315673,
              71.24362773153604,
              9.958906858417965
            ]
          ]
        ]
      },
      "bbox": [
        -156.8110317,
        71.24362773,
        9.958906858,
        -156.7970299,
        71.24816724,
        42.39890686
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:08Z",
        "pc:count": 4020240,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103130.429,
            "count": 4020240,
            "maximum": -102871.5819,
            "minimum": -103367.1019,
            "name": "X",
            "position": 0,
            "stddev": 133.0441982,
            "variance": 17700.75868
          },
          {
            "average": 2363179.875,
            "count": 4020240,
            "maximum": 2363426.346,
            "minimum": 2362952.566,
            "name": "Y",
            "position": 1,
            "stddev": 128.9559442,
            "variance": 16629.63553
          },
          {
            "average": 11.86516358,
            "count": 4020240,
            "maximum": 42.39890686,
            "minimum": 9.958906858,
            "name": "Z",
            "position": 2,
            "stddev": 1.365319057,
            "variance": 1.864096128
          },
          {
            "average": 44017.67744,
            "count": 4020240,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11489.26835,
            "variance": 132003287.3
          },
          {
            "average": 1.000001492,
            "count": 4020240,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001221657217,
            "variance": 1.492446356e-06
          },
          {
            "average": 1.00000199,
            "count": 4020240,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001410647895,
            "variance": 1.989927485e-06
          },
          {
            "average": 0.5051631246,
            "count": 4020240,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999734036,
            "variance": 0.2499734043
          },
          {
            "average": 0.000392016397,
            "count": 4020240,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01979552519,
            "variance": 0.0003918628176
          },
          {
            "average": 1.24949008,
            "count": 4020240,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4332952768,
            "variance": 0.1877447969
          },
          {
            "average": -0.04360711855,
            "count": 4020240,
            "maximum": 20.76600075,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32170688,
            "variance": 106.5376329
          },
          {
            "average": 0.5366109983,
            "count": 4020240,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986578954,
            "variance": 0.2486596967
          },
          {
            "average": 421.8497463,
            "count": 4020240,
            "maximum": 466,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.77828396,
            "variance": 316.0673807
          },
          {
            "average": 220464011.9,
            "count": 4020240,
            "maximum": 220726528,
            "minimum": 220419120.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 107707.476,
            "variance": 11600900390.0
          },
          {
            "average": 0.5366109983,
            "count": 4020240,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986578954,
            "variance": 0.2486596967
          },
          {
            "average": 0,
            "count": 4020240,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4020240,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4020240,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2243547649,
            "count": 4020240,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4171567423,
            "variance": 0.1740197476
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103367.1019,
          2362952.566,
          9.958906858,
          -102871.5819,
          2363426.346,
          42.39890686
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103367.10193835919,
                2362952.5660288143,
                9.958906858417965
              ],
              [
                -103367.10193835919,
                2363426.3460288146,
                9.958906858417965
              ],
              [
                -102871.5819383592,
                2363426.3460288146,
                42.39890685841796
              ],
              [
                -102871.5819383592,
                2362952.5660288143,
                42.39890685841796
              ],
              [
                -103367.10193835919,
                2362952.5660288143,
                9.958906858417965
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:08+00:00",
        "end_time": "2018-09-08T05:18:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1619.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1619.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1619.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1619.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8110317,
            71.24362773,
            9.958906858,
            -156.7970299,
            71.24816724,
            42.39890686
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81048678315673,
                  71.24362773153604,
                  9.958906858417965
                ],
                [
                  -156.81103171472557,
                  71.24797511968882,
                  9.958906858417965
                ],
                [
                  -156.7975721982577,
                  71.24816723584982,
                  42.39890685841796
                ],
                [
                  -156.79702986968928,
                  71.24381980488862,
                  42.39890685841796
                ],
                [
                  -156.81048678315673,
                  71.24362773153604,
                  9.958906858417965
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1619.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1619.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:08Z",
            "pc:count": 4020240,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103130.429,
                "count": 4020240,
                "maximum": -102871.5819,
                "minimum": -103367.1019,
                "name": "X",
                "position": 0,
                "stddev": 133.0441982,
                "variance": 17700.75868
              },
              {
                "average": 2363179.875,
                "count": 4020240,
                "maximum": 2363426.346,
                "minimum": 2362952.566,
                "name": "Y",
                "position": 1,
                "stddev": 128.9559442,
                "variance": 16629.63553
              },
              {
                "average": 11.86516358,
                "count": 4020240,
                "maximum": 42.39890686,
                "minimum": 9.958906858,
                "name": "Z",
                "position": 2,
                "stddev": 1.365319057,
                "variance": 1.864096128
              },
              {
                "average": 44017.67744,
                "count": 4020240,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11489.26835,
                "variance": 132003287.3
              },
              {
                "average": 1.000001492,
                "count": 4020240,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001221657217,
                "variance": 1.492446356e-06
              },
              {
                "average": 1.00000199,
                "count": 4020240,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001410647895,
                "variance": 1.989927485e-06
              },
              {
                "average": 0.5051631246,
                "count": 4020240,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999734036,
                "variance": 0.2499734043
              },
              {
                "average": 0.000392016397,
                "count": 4020240,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01979552519,
                "variance": 0.0003918628176
              },
              {
                "average": 1.24949008,
                "count": 4020240,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4332952768,
                "variance": 0.1877447969
              },
              {
                "average": -0.04360711855,
                "count": 4020240,
                "maximum": 20.76600075,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32170688,
                "variance": 106.5376329
              },
              {
                "average": 0.5366109983,
                "count": 4020240,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986578954,
                "variance": 0.2486596967
              },
              {
                "average": 421.8497463,
                "count": 4020240,
                "maximum": 466,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.77828396,
                "variance": 316.0673807
              },
              {
                "average": 220464011.9,
                "count": 4020240,
                "maximum": 220726528,
                "minimum": 220419120.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 107707.476,
                "variance": 11600900390.0
              },
              {
                "average": 0.5366109983,
                "count": 4020240,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986578954,
                "variance": 0.2486596967
              },
              {
                "average": 0,
                "count": 4020240,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4020240,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4020240,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2243547649,
                "count": 4020240,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4171567423,
                "variance": 0.1740197476
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103367.1019,
              2362952.566,
              9.958906858,
              -102871.5819,
              2363426.346,
              42.39890686
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103367.10193835919,
                    2362952.5660288143,
                    9.958906858417965
                  ],
                  [
                    -103367.10193835919,
                    2363426.3460288146,
                    9.958906858417965
                  ],
                  [
                    -102871.5819383592,
                    2363426.3460288146,
                    42.39890685841796
                  ],
                  [
                    -102871.5819383592,
                    2362952.5660288143,
                    42.39890685841796
                  ],
                  [
                    -103367.10193835919,
                    2362952.5660288143,
                    9.958906858417965
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:08+00:00",
            "end_time": "2018-09-08T05:18:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2022.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65543322141758,
              71.2753732693914,
              -7.681461304789263
            ],
            [
              -156.65594879179008,
              71.27972163489716,
              -7.681461304789263
            ],
            [
              -156.6424591214644,
              71.27990330203191,
              17.538538695210736
            ],
            [
              -156.64194616415193,
              71.27555489596286,
              17.538538695210736
            ],
            [
              -156.65543322141758,
              71.2753732693914,
              -7.681461304789263
            ]
          ]
        ]
      },
      "bbox": [
        -156.6559488,
        71.27537327,
        -7.681461305,
        -156.6419462,
        71.2799033,
        17.5385387
      ],
      "properties": {
        "datetime": "2018-09-11T18:01:11Z",
        "pc:count": 3855693,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97277.56975,
            "count": 3855693,
            "maximum": -97033.46409,
            "minimum": -97529.34409,
            "name": "X",
            "position": 0,
            "stddev": 135.5167826,
            "variance": 18364.79837
          },
          {
            "average": 2366395.827,
            "count": 3855693,
            "maximum": 2366645.085,
            "minimum": 2366171.345,
            "name": "Y",
            "position": 1,
            "stddev": 127.2948508,
            "variance": 16203.97905
          },
          {
            "average": 6.044187555,
            "count": 3855693,
            "maximum": 17.5385387,
            "minimum": -7.681461305,
            "name": "Z",
            "position": 2,
            "stddev": 0.2502985115,
            "variance": 0.06264934487
          },
          {
            "average": 30920.19011,
            "count": 3855693,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10366.17576,
            "variance": 107457599.8
          },
          {
            "average": 1.00030656,
            "count": 3855693,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01756532471,
            "variance": 0.000308540632
          },
          {
            "average": 1.00061286,
            "count": 3855693,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02487386423,
            "variance": 0.0006187091219
          },
          {
            "average": 0.4968243063,
            "count": 3855693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999899797,
            "variance": 0.2499899798
          },
          {
            "average": 0.0004647672935,
            "count": 3855693,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0215534546,
            "variance": 0.0004645514053
          },
          {
            "average": 1.270327539,
            "count": 3855693,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4500288096,
            "variance": 0.2025259295
          },
          {
            "average": 1.398927441,
            "count": 3855693,
            "maximum": 20.54999924,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.64979588,
            "variance": 113.4181522
          },
          {
            "average": 0.4804487805,
            "count": 3855693,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996176684,
            "variance": 0.2496178146
          },
          {
            "average": 426.8417211,
            "count": 3855693,
            "maximum": 460,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.13802308,
            "variance": 293.7118352
          },
          {
            "average": 220487217.7,
            "count": 3855693,
            "maximum": 220724071.9,
            "minimum": 220420547.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 124640.8097,
            "variance": 15535331450.0
          },
          {
            "average": 0.4804487805,
            "count": 3855693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996176684,
            "variance": 0.2496178146
          },
          {
            "average": 0,
            "count": 3855693,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3855693,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3855693,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2060387069,
            "count": 3855693,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4044586513,
            "variance": 0.1635868006
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97529.34409,
          2366171.345,
          -7.681461305,
          -97033.46409,
          2366645.085,
          17.5385387
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97529.34408940072,
                2366171.3452157043,
                -7.681461304789263
              ],
              [
                -97529.34408940072,
                2366645.0852157045,
                -7.681461304789263
              ],
              [
                -97033.46408940072,
                2366645.0852157045,
                17.538538695210736
              ],
              [
                -97033.46408940072,
                2366171.3452157043,
                17.538538695210736
              ],
              [
                -97529.34408940072,
                2366171.3452157043,
                -7.681461304789263
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:01:11+00:00",
        "end_time": "2018-09-08T05:42:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2022.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2022.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2022.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2022.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6559488,
            71.27537327,
            -7.681461305,
            -156.6419462,
            71.2799033,
            17.5385387
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65543322141758,
                  71.2753732693914,
                  -7.681461304789263
                ],
                [
                  -156.65594879179008,
                  71.27972163489716,
                  -7.681461304789263
                ],
                [
                  -156.6424591214644,
                  71.27990330203191,
                  17.538538695210736
                ],
                [
                  -156.64194616415193,
                  71.27555489596286,
                  17.538538695210736
                ],
                [
                  -156.65543322141758,
                  71.2753732693914,
                  -7.681461304789263
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2022.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2022.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:01:11Z",
            "pc:count": 3855693,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97277.56975,
                "count": 3855693,
                "maximum": -97033.46409,
                "minimum": -97529.34409,
                "name": "X",
                "position": 0,
                "stddev": 135.5167826,
                "variance": 18364.79837
              },
              {
                "average": 2366395.827,
                "count": 3855693,
                "maximum": 2366645.085,
                "minimum": 2366171.345,
                "name": "Y",
                "position": 1,
                "stddev": 127.2948508,
                "variance": 16203.97905
              },
              {
                "average": 6.044187555,
                "count": 3855693,
                "maximum": 17.5385387,
                "minimum": -7.681461305,
                "name": "Z",
                "position": 2,
                "stddev": 0.2502985115,
                "variance": 0.06264934487
              },
              {
                "average": 30920.19011,
                "count": 3855693,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10366.17576,
                "variance": 107457599.8
              },
              {
                "average": 1.00030656,
                "count": 3855693,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01756532471,
                "variance": 0.000308540632
              },
              {
                "average": 1.00061286,
                "count": 3855693,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02487386423,
                "variance": 0.0006187091219
              },
              {
                "average": 0.4968243063,
                "count": 3855693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999899797,
                "variance": 0.2499899798
              },
              {
                "average": 0.0004647672935,
                "count": 3855693,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0215534546,
                "variance": 0.0004645514053
              },
              {
                "average": 1.270327539,
                "count": 3855693,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4500288096,
                "variance": 0.2025259295
              },
              {
                "average": 1.398927441,
                "count": 3855693,
                "maximum": 20.54999924,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.64979588,
                "variance": 113.4181522
              },
              {
                "average": 0.4804487805,
                "count": 3855693,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996176684,
                "variance": 0.2496178146
              },
              {
                "average": 426.8417211,
                "count": 3855693,
                "maximum": 460,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.13802308,
                "variance": 293.7118352
              },
              {
                "average": 220487217.7,
                "count": 3855693,
                "maximum": 220724071.9,
                "minimum": 220420547.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 124640.8097,
                "variance": 15535331450.0
              },
              {
                "average": 0.4804487805,
                "count": 3855693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996176684,
                "variance": 0.2496178146
              },
              {
                "average": 0,
                "count": 3855693,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3855693,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3855693,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2060387069,
                "count": 3855693,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4044586513,
                "variance": 0.1635868006
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97529.34409,
              2366171.345,
              -7.681461305,
              -97033.46409,
              2366645.085,
              17.5385387
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97529.34408940072,
                    2366171.3452157043,
                    -7.681461304789263
                  ],
                  [
                    -97529.34408940072,
                    2366645.0852157045,
                    -7.681461304789263
                  ],
                  [
                    -97033.46408940072,
                    2366645.0852157045,
                    17.538538695210736
                  ],
                  [
                    -97033.46408940072,
                    2366171.3452157043,
                    17.538538695210736
                  ],
                  [
                    -97529.34408940072,
                    2366171.3452157043,
                    -7.681461304789263
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:01:11+00:00",
            "end_time": "2018-09-08T05:42:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2079.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7952157734449,
              71.2845174761614,
              -10.884340517011875
            ],
            [
              -156.79575866653434,
              71.28886555011798,
              -10.884340517011875
            ],
            [
              -156.7822717257208,
              71.28905671071783,
              29.835659482988124
            ],
            [
              -156.78173144544172,
              71.28470859405853,
              29.835659482988124
            ],
            [
              -156.7952157734449,
              71.2845174761614,
              -10.884340517011875
            ]
          ]
        ]
      },
      "bbox": [
        -156.7957587,
        71.28451748,
        -10.88434052,
        -156.7817314,
        71.28905671,
        29.83565948
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:02Z",
        "pc:count": 3130545,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102369.0554,
            "count": 3130545,
            "maximum": -102122.8483,
            "minimum": -102618.4683,
            "name": "X",
            "position": 0,
            "stddev": 135.5891157,
            "variance": 18384.40829
          },
          {
            "average": 2367619.618,
            "count": 3130545,
            "maximum": 2367850.283,
            "minimum": 2367376.563,
            "name": "Y",
            "position": 1,
            "stddev": 128.9828036,
            "variance": 16636.56361
          },
          {
            "average": 12.32634088,
            "count": 3130545,
            "maximum": 29.83565948,
            "minimum": -10.88434052,
            "name": "Z",
            "position": 2,
            "stddev": 1.839622788,
            "variance": 3.384212001
          },
          {
            "average": 30550.35287,
            "count": 3130545,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12418.33624,
            "variance": 154215075.1
          },
          {
            "average": 1.017929147,
            "count": 3130545,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1378721593,
            "variance": 0.0190087323
          },
          {
            "average": 1.035956359,
            "count": 3130545,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1972757538,
            "variance": 0.03891772304
          },
          {
            "average": 0.503166701,
            "count": 3130545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999900518,
            "variance": 0.2499900519
          },
          {
            "average": 0.0004417761125,
            "count": 3130545,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02101383086,
            "variance": 0.0004415810874
          },
          {
            "average": 1.581688811,
            "count": 3130545,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.146768279,
            "variance": 1.315077485
          },
          {
            "average": 0.8733959691,
            "count": 3130545,
            "maximum": 16.3560009,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60544148,
            "variance": 112.475389
          },
          {
            "average": 0.5447648892,
            "count": 3130545,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979921525,
            "variance": 0.2479961839
          },
          {
            "average": 406.4576638,
            "count": 3130545,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9751267503,
            "variance": 0.9508721792
          },
          {
            "average": 220415302.3,
            "count": 3130545,
            "maximum": 220416082.2,
            "minimum": 220414562.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 538.3434258,
            "variance": 289813.6441
          },
          {
            "average": 0.5447648892,
            "count": 3130545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979921525,
            "variance": 0.2479961839
          },
          {
            "average": 0,
            "count": 3130545,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3130545,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3130545,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2628165383,
            "count": 3130545,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4401636825,
            "variance": 0.1937440674
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102618.4683,
          2367376.563,
          -10.88434052,
          -102122.8483,
          2367850.283,
          29.83565948
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102618.46829542101,
                2367376.5626980835,
                -10.884340517011875
              ],
              [
                -102618.46829542101,
                2367850.282698083,
                -10.884340517011875
              ],
              [
                -102122.84829542102,
                2367850.282698083,
                29.835659482988124
              ],
              [
                -102122.84829542102,
                2367376.5626980835,
                29.835659482988124
              ],
              [
                -102618.46829542101,
                2367376.5626980835,
                -10.884340517011875
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:02+00:00",
        "end_time": "2018-09-08T04:02:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2079.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2079.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2079.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2079.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7957587,
            71.28451748,
            -10.88434052,
            -156.7817314,
            71.28905671,
            29.83565948
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7952157734449,
                  71.2845174761614,
                  -10.884340517011875
                ],
                [
                  -156.79575866653434,
                  71.28886555011798,
                  -10.884340517011875
                ],
                [
                  -156.7822717257208,
                  71.28905671071783,
                  29.835659482988124
                ],
                [
                  -156.78173144544172,
                  71.28470859405853,
                  29.835659482988124
                ],
                [
                  -156.7952157734449,
                  71.2845174761614,
                  -10.884340517011875
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2079.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2079.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:02Z",
            "pc:count": 3130545,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102369.0554,
                "count": 3130545,
                "maximum": -102122.8483,
                "minimum": -102618.4683,
                "name": "X",
                "position": 0,
                "stddev": 135.5891157,
                "variance": 18384.40829
              },
              {
                "average": 2367619.618,
                "count": 3130545,
                "maximum": 2367850.283,
                "minimum": 2367376.563,
                "name": "Y",
                "position": 1,
                "stddev": 128.9828036,
                "variance": 16636.56361
              },
              {
                "average": 12.32634088,
                "count": 3130545,
                "maximum": 29.83565948,
                "minimum": -10.88434052,
                "name": "Z",
                "position": 2,
                "stddev": 1.839622788,
                "variance": 3.384212001
              },
              {
                "average": 30550.35287,
                "count": 3130545,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12418.33624,
                "variance": 154215075.1
              },
              {
                "average": 1.017929147,
                "count": 3130545,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1378721593,
                "variance": 0.0190087323
              },
              {
                "average": 1.035956359,
                "count": 3130545,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1972757538,
                "variance": 0.03891772304
              },
              {
                "average": 0.503166701,
                "count": 3130545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999900518,
                "variance": 0.2499900519
              },
              {
                "average": 0.0004417761125,
                "count": 3130545,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02101383086,
                "variance": 0.0004415810874
              },
              {
                "average": 1.581688811,
                "count": 3130545,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.146768279,
                "variance": 1.315077485
              },
              {
                "average": 0.8733959691,
                "count": 3130545,
                "maximum": 16.3560009,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60544148,
                "variance": 112.475389
              },
              {
                "average": 0.5447648892,
                "count": 3130545,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979921525,
                "variance": 0.2479961839
              },
              {
                "average": 406.4576638,
                "count": 3130545,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9751267503,
                "variance": 0.9508721792
              },
              {
                "average": 220415302.3,
                "count": 3130545,
                "maximum": 220416082.2,
                "minimum": 220414562.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 538.3434258,
                "variance": 289813.6441
              },
              {
                "average": 0.5447648892,
                "count": 3130545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979921525,
                "variance": 0.2479961839
              },
              {
                "average": 0,
                "count": 3130545,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3130545,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3130545,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2628165383,
                "count": 3130545,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4401636825,
                "variance": 0.1937440674
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102618.4683,
              2367376.563,
              -10.88434052,
              -102122.8483,
              2367850.283,
              29.83565948
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102618.46829542101,
                    2367376.5626980835,
                    -10.884340517011875
                  ],
                  [
                    -102618.46829542101,
                    2367850.282698083,
                    -10.884340517011875
                  ],
                  [
                    -102122.84829542102,
                    2367850.282698083,
                    29.835659482988124
                  ],
                  [
                    -102122.84829542102,
                    2367376.5626980835,
                    29.835659482988124
                  ],
                  [
                    -102618.46829542101,
                    2367376.5626980835,
                    -10.884340517011875
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:02+00:00",
            "end_time": "2018-09-08T04:02:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1780.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79699364775536,
              71.2558387667028,
              6.296479975809667
            ],
            [
              -156.79753612252813,
              71.26018544660222,
              6.296479975809667
            ],
            [
              -156.784068074871,
              71.26037666954639,
              10.316479975809667
            ],
            [
              -156.78352820557365,
              71.25602994701454,
              10.316479975809667
            ],
            [
              -156.79699364775536,
              71.2558387667028,
              6.296479975809667
            ]
          ]
        ]
      },
      "bbox": [
        -156.7975361,
        71.25583877,
        6.296479976,
        -156.7835282,
        71.26037667,
        10.31647998
      ],
      "properties": {
        "datetime": "2018-09-08T05:36:16Z",
        "pc:count": 2888825,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102573.3276,
            "count": 2888825,
            "maximum": -102319.5924,
            "minimum": -102815.1524,
            "name": "X",
            "position": 0,
            "stddev": 135.2178027,
            "variance": 18283.85418
          },
          {
            "average": 2364497.254,
            "count": 2888825,
            "maximum": 2364733.632,
            "minimum": 2364259.972,
            "name": "Y",
            "position": 1,
            "stddev": 130.733078,
            "variance": 17091.13769
          },
          {
            "average": 8.79969008,
            "count": 2888825,
            "maximum": 10.31647998,
            "minimum": 6.296479976,
            "name": "Z",
            "position": 2,
            "stddev": 0.885010659,
            "variance": 0.7832438665
          },
          {
            "average": 45182.32993,
            "count": 2888825,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9033.931025,
            "variance": 81611909.76
          },
          {
            "average": 1,
            "count": 2888825,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2888825,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5044729258,
            "count": 2888825,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999800791,
            "variance": 0.2499800795
          },
          {
            "average": 0.0003932394659,
            "count": 2888825,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01982637044,
            "variance": 0.0003930849647
          },
          {
            "average": 1.316995318,
            "count": 2888825,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4653696393,
            "variance": 0.2165689012
          },
          {
            "average": 0.008312032971,
            "count": 2888825,
            "maximum": 16.35000038,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.49392866,
            "variance": 110.1225388
          },
          {
            "average": 0.5195167585,
            "count": 2888825,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996190374,
            "variance": 0.2496191825
          },
          {
            "average": 412.6762331,
            "count": 2888825,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9295563924,
            "variance": 0.8640750867
          },
          {
            "average": 220418766.1,
            "count": 2888825,
            "maximum": 220420176.7,
            "minimum": 220417998.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 508.7573907,
            "variance": 258834.0826
          },
          {
            "average": 0.5195167585,
            "count": 2888825,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996190374,
            "variance": 0.2496191825
          },
          {
            "average": 0,
            "count": 2888825,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2888825,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2888825,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2485917285,
            "count": 2888825,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4321966516,
            "variance": 0.1867939457
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102815.1524,
          2364259.972,
          6.296479976,
          -102319.5924,
          2364733.632,
          10.31647998
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102815.15235597045,
                2364259.97220868,
                6.296479975809667
              ],
              [
                -102815.15235597045,
                2364733.6322086803,
                6.296479975809667
              ],
              [
                -102319.59235597045,
                2364733.6322086803,
                10.316479975809667
              ],
              [
                -102319.59235597045,
                2364259.97220868,
                10.316479975809667
              ],
              [
                -102815.15235597045,
                2364259.97220868,
                6.296479975809667
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:36:16+00:00",
        "end_time": "2018-09-08T04:59:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1780.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1780.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1780.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1780.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7975361,
            71.25583877,
            6.296479976,
            -156.7835282,
            71.26037667,
            10.31647998
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79699364775536,
                  71.2558387667028,
                  6.296479975809667
                ],
                [
                  -156.79753612252813,
                  71.26018544660222,
                  6.296479975809667
                ],
                [
                  -156.784068074871,
                  71.26037666954639,
                  10.316479975809667
                ],
                [
                  -156.78352820557365,
                  71.25602994701454,
                  10.316479975809667
                ],
                [
                  -156.79699364775536,
                  71.2558387667028,
                  6.296479975809667
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1780.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1780.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:36:16Z",
            "pc:count": 2888825,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102573.3276,
                "count": 2888825,
                "maximum": -102319.5924,
                "minimum": -102815.1524,
                "name": "X",
                "position": 0,
                "stddev": 135.2178027,
                "variance": 18283.85418
              },
              {
                "average": 2364497.254,
                "count": 2888825,
                "maximum": 2364733.632,
                "minimum": 2364259.972,
                "name": "Y",
                "position": 1,
                "stddev": 130.733078,
                "variance": 17091.13769
              },
              {
                "average": 8.79969008,
                "count": 2888825,
                "maximum": 10.31647998,
                "minimum": 6.296479976,
                "name": "Z",
                "position": 2,
                "stddev": 0.885010659,
                "variance": 0.7832438665
              },
              {
                "average": 45182.32993,
                "count": 2888825,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9033.931025,
                "variance": 81611909.76
              },
              {
                "average": 1,
                "count": 2888825,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2888825,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5044729258,
                "count": 2888825,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999800791,
                "variance": 0.2499800795
              },
              {
                "average": 0.0003932394659,
                "count": 2888825,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01982637044,
                "variance": 0.0003930849647
              },
              {
                "average": 1.316995318,
                "count": 2888825,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4653696393,
                "variance": 0.2165689012
              },
              {
                "average": 0.008312032971,
                "count": 2888825,
                "maximum": 16.35000038,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.49392866,
                "variance": 110.1225388
              },
              {
                "average": 0.5195167585,
                "count": 2888825,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996190374,
                "variance": 0.2496191825
              },
              {
                "average": 412.6762331,
                "count": 2888825,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9295563924,
                "variance": 0.8640750867
              },
              {
                "average": 220418766.1,
                "count": 2888825,
                "maximum": 220420176.7,
                "minimum": 220417998.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 508.7573907,
                "variance": 258834.0826
              },
              {
                "average": 0.5195167585,
                "count": 2888825,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996190374,
                "variance": 0.2496191825
              },
              {
                "average": 0,
                "count": 2888825,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2888825,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2888825,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2485917285,
                "count": 2888825,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4321966516,
                "variance": 0.1867939457
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102815.1524,
              2364259.972,
              6.296479976,
              -102319.5924,
              2364733.632,
              10.31647998
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102815.15235597045,
                    2364259.97220868,
                    6.296479975809667
                  ],
                  [
                    -102815.15235597045,
                    2364733.6322086803,
                    6.296479975809667
                  ],
                  [
                    -102319.59235597045,
                    2364733.6322086803,
                    10.316479975809667
                  ],
                  [
                    -102319.59235597045,
                    2364259.97220868,
                    10.316479975809667
                  ],
                  [
                    -102815.15235597045,
                    2364259.97220868,
                    6.296479975809667
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:36:16+00:00",
            "end_time": "2018-09-08T04:59:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1623.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75955442026145,
              71.24329870083815,
              9.814294712349836
            ],
            [
              -156.76008947433354,
              71.24764621935283,
              9.814294712349836
            ],
            [
              -156.74662592113089,
              71.24783490033612,
              13.074294712349838
            ],
            [
              -156.74609347105292,
              71.24348733977806,
              13.074294712349838
            ],
            [
              -156.75955442026145,
              71.24329870083815,
              9.814294712349836
            ]
          ]
        ]
      },
      "bbox": [
        -156.7600895,
        71.2432987,
        9.814294712,
        -156.7460935,
        71.2478349,
        13.07429471
      ],
      "properties": {
        "datetime": "2018-09-11T18:42:35Z",
        "pc:count": 3459484,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101250.8374,
            "count": 3459484,
            "maximum": -101000.7732,
            "minimum": -101496.4332,
            "name": "X",
            "position": 0,
            "stddev": 140.2483026,
            "variance": 19669.58637
          },
          {
            "average": 2363072.809,
            "count": 3459484,
            "maximum": 2363311.994,
            "minimum": 2362838.214,
            "name": "Y",
            "position": 1,
            "stddev": 134.5765269,
            "variance": 18110.84158
          },
          {
            "average": 10.39991602,
            "count": 3459484,
            "maximum": 13.07429471,
            "minimum": 9.814294712,
            "name": "Z",
            "position": 2,
            "stddev": 0.6044638898,
            "variance": 0.365376594
          },
          {
            "average": 31846.90071,
            "count": 3459484,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14993.33563,
            "variance": 224800113.2
          },
          {
            "average": 1,
            "count": 3459484,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3459484,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5051840101,
            "count": 3459484,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999731976,
            "variance": 0.2499731983
          },
          {
            "average": 0.0005078792097,
            "count": 3459484,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02253045528,
            "variance": 0.0005076214152
          },
          {
            "average": 1.818230696,
            "count": 3459484,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.119480717,
            "variance": 4.492198508
          },
          {
            "average": -1.523661012,
            "count": 3459484,
            "maximum": 20.77199936,
            "minimum": -19.62599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.701732,
            "variance": 114.5270677
          },
          {
            "average": 0.5095051748,
            "count": 3459484,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999097157,
            "variance": 0.2499097239
          },
          {
            "average": 429.4157756,
            "count": 3459484,
            "maximum": 466,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.00407843,
            "variance": 400.1631539
          },
          {
            "average": 220495379.4,
            "count": 3459484,
            "maximum": 220726555.2,
            "minimum": 220420461.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 130305.3093,
            "variance": 16979473630.0
          },
          {
            "average": 0.5095051748,
            "count": 3459484,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999097157,
            "variance": 0.2499097239
          },
          {
            "average": 0,
            "count": 3459484,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3459484,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3459484,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2270610299,
            "count": 3459484,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4189324162,
            "variance": 0.1755043693
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101496.4332,
          2362838.214,
          9.814294712,
          -101000.7732,
          2363311.994,
          13.07429471
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101496.43324601019,
                2362838.2135982285,
                9.814294712349836
              ],
              [
                -101496.43324601019,
                2363311.993598229,
                9.814294712349836
              ],
              [
                -101000.77324601018,
                2363311.993598229,
                13.074294712349838
              ],
              [
                -101000.77324601018,
                2362838.2135982285,
                13.074294712349838
              ],
              [
                -101496.43324601019,
                2362838.2135982285,
                9.814294712349836
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:42:35+00:00",
        "end_time": "2018-09-08T05:41:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1623.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1623.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1623.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1623.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7600895,
            71.2432987,
            9.814294712,
            -156.7460935,
            71.2478349,
            13.07429471
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75955442026145,
                  71.24329870083815,
                  9.814294712349836
                ],
                [
                  -156.76008947433354,
                  71.24764621935283,
                  9.814294712349836
                ],
                [
                  -156.74662592113089,
                  71.24783490033612,
                  13.074294712349838
                ],
                [
                  -156.74609347105292,
                  71.24348733977806,
                  13.074294712349838
                ],
                [
                  -156.75955442026145,
                  71.24329870083815,
                  9.814294712349836
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1623.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1623.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:42:35Z",
            "pc:count": 3459484,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101250.8374,
                "count": 3459484,
                "maximum": -101000.7732,
                "minimum": -101496.4332,
                "name": "X",
                "position": 0,
                "stddev": 140.2483026,
                "variance": 19669.58637
              },
              {
                "average": 2363072.809,
                "count": 3459484,
                "maximum": 2363311.994,
                "minimum": 2362838.214,
                "name": "Y",
                "position": 1,
                "stddev": 134.5765269,
                "variance": 18110.84158
              },
              {
                "average": 10.39991602,
                "count": 3459484,
                "maximum": 13.07429471,
                "minimum": 9.814294712,
                "name": "Z",
                "position": 2,
                "stddev": 0.6044638898,
                "variance": 0.365376594
              },
              {
                "average": 31846.90071,
                "count": 3459484,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14993.33563,
                "variance": 224800113.2
              },
              {
                "average": 1,
                "count": 3459484,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3459484,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5051840101,
                "count": 3459484,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999731976,
                "variance": 0.2499731983
              },
              {
                "average": 0.0005078792097,
                "count": 3459484,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02253045528,
                "variance": 0.0005076214152
              },
              {
                "average": 1.818230696,
                "count": 3459484,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.119480717,
                "variance": 4.492198508
              },
              {
                "average": -1.523661012,
                "count": 3459484,
                "maximum": 20.77199936,
                "minimum": -19.62599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.701732,
                "variance": 114.5270677
              },
              {
                "average": 0.5095051748,
                "count": 3459484,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999097157,
                "variance": 0.2499097239
              },
              {
                "average": 429.4157756,
                "count": 3459484,
                "maximum": 466,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.00407843,
                "variance": 400.1631539
              },
              {
                "average": 220495379.4,
                "count": 3459484,
                "maximum": 220726555.2,
                "minimum": 220420461.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 130305.3093,
                "variance": 16979473630.0
              },
              {
                "average": 0.5095051748,
                "count": 3459484,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999097157,
                "variance": 0.2499097239
              },
              {
                "average": 0,
                "count": 3459484,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3459484,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3459484,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2270610299,
                "count": 3459484,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4189324162,
                "variance": 0.1755043693
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101496.4332,
              2362838.214,
              9.814294712,
              -101000.7732,
              2363311.994,
              13.07429471
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101496.43324601019,
                    2362838.2135982285,
                    9.814294712349836
                  ],
                  [
                    -101496.43324601019,
                    2363311.993598229,
                    9.814294712349836
                  ],
                  [
                    -101000.77324601018,
                    2363311.993598229,
                    13.074294712349838
                  ],
                  [
                    -101000.77324601018,
                    2362838.2135982285,
                    13.074294712349838
                  ],
                  [
                    -101496.43324601019,
                    2362838.2135982285,
                    9.814294712349836
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:42:35+00:00",
            "end_time": "2018-09-08T05:41:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1930.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84723234939943,
              71.26844899725947,
              0.934113119352697
            ],
            [
              -156.84778489603843,
              71.2727960889382,
              0.934113119352697
            ],
            [
              -156.83430970221,
              71.27299076904507,
              10.514113119352697
            ],
            [
              -156.8337597637539,
              71.26864363392744,
              10.514113119352697
            ],
            [
              -156.84723234939943,
              71.26844899725947,
              0.934113119352697
            ]
          ]
        ]
      },
      "bbox": [
        -156.8477849,
        71.268449,
        0.9341131194,
        -156.8337598,
        71.27299077,
        10.51411312
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:19Z",
        "pc:count": 2485019,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104319.5181,
            "count": 2485019,
            "maximum": -104106.3619,
            "minimum": -104601.9219,
            "name": "X",
            "position": 0,
            "stddev": 130.2773379,
            "variance": 16972.18477
          },
          {
            "average": 2365928.192,
            "count": 2485019,
            "maximum": 2366183.753,
            "minimum": 2365710.073,
            "name": "Y",
            "position": 1,
            "stddev": 126.4360366,
            "variance": 15986.07134
          },
          {
            "average": 6.121254348,
            "count": 2485019,
            "maximum": 10.51411312,
            "minimum": 0.9341131194,
            "name": "Z",
            "position": 2,
            "stddev": 3.729356974,
            "variance": 13.90810344
          },
          {
            "average": 32990.34547,
            "count": 2485019,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15440.93107,
            "variance": 238422352.3
          },
          {
            "average": 1.000002012,
            "count": 2485019,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001418468827,
            "variance": 2.012053812e-06
          },
          {
            "average": 1.000004024,
            "count": 2485019,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002006015834,
            "variance": 4.024099527e-06
          },
          {
            "average": 0.5038311578,
            "count": 2485019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999854226,
            "variance": 0.2499854228
          },
          {
            "average": 0.0004426525511,
            "count": 2485019,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02103465683,
            "variance": 0.0004424567879
          },
          {
            "average": 3.115373766,
            "count": 2485019,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.205650361,
            "variance": 10.27619424
          },
          {
            "average": -0.2117970741,
            "count": 2485019,
            "maximum": 16.40999985,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.788148158,
            "variance": 95.80784436
          },
          {
            "average": 0.503026335,
            "count": 2485019,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999909418,
            "variance": 0.2499909419
          },
          {
            "average": 406.8512462,
            "count": 2485019,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8435122178,
            "variance": 0.7115128615
          },
          {
            "average": 220415478.6,
            "count": 2485019,
            "maximum": 220416039.4,
            "minimum": 220414609.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 496.1602193,
            "variance": 246174.9632
          },
          {
            "average": 0.503026335,
            "count": 2485019,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999909418,
            "variance": 0.2499909419
          },
          {
            "average": 0,
            "count": 2485019,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2485019,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2485019,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1909852601,
            "count": 2485019,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3930775403,
            "variance": 0.1545099527
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104601.9219,
          2365710.073,
          0.9341131194,
          -104106.3619,
          2366183.753,
          10.51411312
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104601.92191749217,
                2365710.073085368,
                0.934113119352697
              ],
              [
                -104601.92191749217,
                2366183.753085368,
                0.934113119352697
              ],
              [
                -104106.36191749218,
                2366183.753085368,
                10.514113119352697
              ],
              [
                -104106.36191749218,
                2365710.073085368,
                10.514113119352697
              ],
              [
                -104601.92191749217,
                2365710.073085368,
                0.934113119352697
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:19+00:00",
        "end_time": "2018-09-08T04:03:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1930.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1930.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1930.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1930.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8477849,
            71.268449,
            0.9341131194,
            -156.8337598,
            71.27299077,
            10.51411312
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84723234939943,
                  71.26844899725947,
                  0.934113119352697
                ],
                [
                  -156.84778489603843,
                  71.2727960889382,
                  0.934113119352697
                ],
                [
                  -156.83430970221,
                  71.27299076904507,
                  10.514113119352697
                ],
                [
                  -156.8337597637539,
                  71.26864363392744,
                  10.514113119352697
                ],
                [
                  -156.84723234939943,
                  71.26844899725947,
                  0.934113119352697
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1930.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1930.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:19Z",
            "pc:count": 2485019,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104319.5181,
                "count": 2485019,
                "maximum": -104106.3619,
                "minimum": -104601.9219,
                "name": "X",
                "position": 0,
                "stddev": 130.2773379,
                "variance": 16972.18477
              },
              {
                "average": 2365928.192,
                "count": 2485019,
                "maximum": 2366183.753,
                "minimum": 2365710.073,
                "name": "Y",
                "position": 1,
                "stddev": 126.4360366,
                "variance": 15986.07134
              },
              {
                "average": 6.121254348,
                "count": 2485019,
                "maximum": 10.51411312,
                "minimum": 0.9341131194,
                "name": "Z",
                "position": 2,
                "stddev": 3.729356974,
                "variance": 13.90810344
              },
              {
                "average": 32990.34547,
                "count": 2485019,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15440.93107,
                "variance": 238422352.3
              },
              {
                "average": 1.000002012,
                "count": 2485019,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001418468827,
                "variance": 2.012053812e-06
              },
              {
                "average": 1.000004024,
                "count": 2485019,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002006015834,
                "variance": 4.024099527e-06
              },
              {
                "average": 0.5038311578,
                "count": 2485019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999854226,
                "variance": 0.2499854228
              },
              {
                "average": 0.0004426525511,
                "count": 2485019,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02103465683,
                "variance": 0.0004424567879
              },
              {
                "average": 3.115373766,
                "count": 2485019,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.205650361,
                "variance": 10.27619424
              },
              {
                "average": -0.2117970741,
                "count": 2485019,
                "maximum": 16.40999985,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.788148158,
                "variance": 95.80784436
              },
              {
                "average": 0.503026335,
                "count": 2485019,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999909418,
                "variance": 0.2499909419
              },
              {
                "average": 406.8512462,
                "count": 2485019,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8435122178,
                "variance": 0.7115128615
              },
              {
                "average": 220415478.6,
                "count": 2485019,
                "maximum": 220416039.4,
                "minimum": 220414609.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 496.1602193,
                "variance": 246174.9632
              },
              {
                "average": 0.503026335,
                "count": 2485019,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999909418,
                "variance": 0.2499909419
              },
              {
                "average": 0,
                "count": 2485019,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2485019,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2485019,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1909852601,
                "count": 2485019,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3930775403,
                "variance": 0.1545099527
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104601.9219,
              2365710.073,
              0.9341131194,
              -104106.3619,
              2366183.753,
              10.51411312
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104601.92191749217,
                    2365710.073085368,
                    0.934113119352697
                  ],
                  [
                    -104601.92191749217,
                    2366183.753085368,
                    0.934113119352697
                  ],
                  [
                    -104106.36191749218,
                    2366183.753085368,
                    10.514113119352697
                  ],
                  [
                    -104106.36191749218,
                    2365710.073085368,
                    10.514113119352697
                  ],
                  [
                    -104601.92191749217,
                    2365710.073085368,
                    0.934113119352697
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:19+00:00",
            "end_time": "2018-09-08T04:03:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1938.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7452389818166,
              71.26779633012009,
              3.790310403896102
            ],
            [
              -156.7457717086466,
              71.27214350050093,
              3.790310403896102
            ],
            [
              -156.73229060050923,
              71.27233126900666,
              12.190310403896103
            ],
            [
              -156.73176048332695,
              71.26798405672996,
              12.190310403896103
            ],
            [
              -156.7452389818166,
              71.26779633012009,
              3.790310403896102
            ]
          ]
        ]
      },
      "bbox": [
        -156.7457717,
        71.26779633,
        3.790310404,
        -156.7317605,
        71.27233127,
        12.1903104
      ],
      "properties": {
        "datetime": "2018-09-08T05:35:41Z",
        "pc:count": 2889403,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100613.3298,
            "count": 2889403,
            "maximum": -100364.2293,
            "minimum": -100859.9893,
            "name": "X",
            "position": 0,
            "stddev": 133.7494208,
            "variance": 17888.90757
          },
          {
            "average": 2365722.544,
            "count": 2889403,
            "maximum": 2365954.969,
            "minimum": 2365481.309,
            "name": "Y",
            "position": 1,
            "stddev": 130.6994602,
            "variance": 17082.3489
          },
          {
            "average": 9.265006274,
            "count": 2889403,
            "maximum": 12.1903104,
            "minimum": 3.790310404,
            "name": "Z",
            "position": 2,
            "stddev": 1.230312353,
            "variance": 1.513668485
          },
          {
            "average": 46804.40284,
            "count": 2889403,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8425.318,
            "variance": 70985983.41
          },
          {
            "average": 1.000095175,
            "count": 2889403,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.009755323917,
            "variance": 9.516634472e-05
          },
          {
            "average": 1.000191735,
            "count": 2889403,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01384551961,
            "variance": 0.0001916984133
          },
          {
            "average": 0.4982773258,
            "count": 2889403,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999971189,
            "variance": 0.2499971189
          },
          {
            "average": 0.0004509582083,
            "count": 2889403,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02123099152,
            "variance": 0.000450755001
          },
          {
            "average": 1.344117107,
            "count": 2889403,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5786752617,
            "variance": 0.3348650585
          },
          {
            "average": -0.2897352579,
            "count": 2889403,
            "maximum": 16.38599968,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.27508493,
            "variance": 105.5773703
          },
          {
            "average": 0.4534784521,
            "count": 2889403,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978311273,
            "variance": 0.2478358314
          },
          {
            "average": 413.4650933,
            "count": 2889403,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9491020622,
            "variance": 0.9007947245
          },
          {
            "average": 220419215.8,
            "count": 2889403,
            "maximum": 220420141,
            "minimum": 220418321.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 534.8985455,
            "variance": 286116.4539
          },
          {
            "average": 0.4534784521,
            "count": 2889403,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978311273,
            "variance": 0.2478358314
          },
          {
            "average": 0,
            "count": 2889403,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2889403,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2889403,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.221254356,
            "count": 2889403,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4150914665,
            "variance": 0.1723009256
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100859.9893,
          2365481.309,
          3.790310404,
          -100364.2293,
          2365954.969,
          12.1903104
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100859.98933418418,
                2365481.3093554107,
                3.790310403896102
              ],
              [
                -100859.98933418418,
                2365954.969355411,
                3.790310403896102
              ],
              [
                -100364.22933418417,
                2365954.969355411,
                12.190310403896103
              ],
              [
                -100364.22933418417,
                2365481.3093554107,
                12.190310403896103
              ],
              [
                -100859.98933418418,
                2365481.3093554107,
                3.790310403896102
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:35:41+00:00",
        "end_time": "2018-09-08T05:05:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1938.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1938.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1938.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1938.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7457717,
            71.26779633,
            3.790310404,
            -156.7317605,
            71.27233127,
            12.1903104
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7452389818166,
                  71.26779633012009,
                  3.790310403896102
                ],
                [
                  -156.7457717086466,
                  71.27214350050093,
                  3.790310403896102
                ],
                [
                  -156.73229060050923,
                  71.27233126900666,
                  12.190310403896103
                ],
                [
                  -156.73176048332695,
                  71.26798405672996,
                  12.190310403896103
                ],
                [
                  -156.7452389818166,
                  71.26779633012009,
                  3.790310403896102
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1938.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1938.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:35:41Z",
            "pc:count": 2889403,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100613.3298,
                "count": 2889403,
                "maximum": -100364.2293,
                "minimum": -100859.9893,
                "name": "X",
                "position": 0,
                "stddev": 133.7494208,
                "variance": 17888.90757
              },
              {
                "average": 2365722.544,
                "count": 2889403,
                "maximum": 2365954.969,
                "minimum": 2365481.309,
                "name": "Y",
                "position": 1,
                "stddev": 130.6994602,
                "variance": 17082.3489
              },
              {
                "average": 9.265006274,
                "count": 2889403,
                "maximum": 12.1903104,
                "minimum": 3.790310404,
                "name": "Z",
                "position": 2,
                "stddev": 1.230312353,
                "variance": 1.513668485
              },
              {
                "average": 46804.40284,
                "count": 2889403,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8425.318,
                "variance": 70985983.41
              },
              {
                "average": 1.000095175,
                "count": 2889403,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.009755323917,
                "variance": 9.516634472e-05
              },
              {
                "average": 1.000191735,
                "count": 2889403,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01384551961,
                "variance": 0.0001916984133
              },
              {
                "average": 0.4982773258,
                "count": 2889403,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999971189,
                "variance": 0.2499971189
              },
              {
                "average": 0.0004509582083,
                "count": 2889403,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02123099152,
                "variance": 0.000450755001
              },
              {
                "average": 1.344117107,
                "count": 2889403,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5786752617,
                "variance": 0.3348650585
              },
              {
                "average": -0.2897352579,
                "count": 2889403,
                "maximum": 16.38599968,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.27508493,
                "variance": 105.5773703
              },
              {
                "average": 0.4534784521,
                "count": 2889403,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978311273,
                "variance": 0.2478358314
              },
              {
                "average": 413.4650933,
                "count": 2889403,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9491020622,
                "variance": 0.9007947245
              },
              {
                "average": 220419215.8,
                "count": 2889403,
                "maximum": 220420141,
                "minimum": 220418321.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 534.8985455,
                "variance": 286116.4539
              },
              {
                "average": 0.4534784521,
                "count": 2889403,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978311273,
                "variance": 0.2478358314
              },
              {
                "average": 0,
                "count": 2889403,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2889403,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2889403,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.221254356,
                "count": 2889403,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4150914665,
                "variance": 0.1723009256
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100859.9893,
              2365481.309,
              3.790310404,
              -100364.2293,
              2365954.969,
              12.1903104
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100859.98933418418,
                    2365481.3093554107,
                    3.790310403896102
                  ],
                  [
                    -100859.98933418418,
                    2365954.969355411,
                    3.790310403896102
                  ],
                  [
                    -100364.22933418417,
                    2365954.969355411,
                    12.190310403896103
                  ],
                  [
                    -100364.22933418417,
                    2365481.3093554107,
                    12.190310403896103
                  ],
                  [
                    -100859.98933418418,
                    2365481.3093554107,
                    3.790310403896102
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:35:41+00:00",
            "end_time": "2018-09-08T05:05:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2042.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83602161068822,
              71.28089177647362,
              0.942409532517372
            ],
            [
              -156.83616411917527,
              71.28201700070534,
              0.942409532517372
            ],
            [
              -156.83371475636432,
              71.28205229897615,
              1.462409532517372
            ],
            [
              -156.83357237065115,
              71.28092707270433,
              1.462409532517372
            ],
            [
              -156.83602161068822,
              71.28089177647362,
              0.942409532517372
            ]
          ]
        ]
      },
      "bbox": [
        -156.8361641,
        71.28089178,
        0.9424095325,
        -156.8335724,
        71.2820523,
        1.462409533
      ],
      "properties": {
        "datetime": "2018-09-08T04:08:46Z",
        "pc:count": 49799,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104074.6689,
            "count": 49799,
            "maximum": -104042.4446,
            "minimum": -104132.4846,
            "name": "X",
            "position": 0,
            "stddev": 20.24024951,
            "variance": 409.6677004
          },
          {
            "average": 2367087.94,
            "count": 49799,
            "maximum": 2367168.357,
            "minimum": 2367045.757,
            "name": "Y",
            "position": 1,
            "stddev": 28.40963542,
            "variance": 807.1073847
          },
          {
            "average": 1.170567126,
            "count": 49799,
            "maximum": 1.462409533,
            "minimum": 0.9424095325,
            "name": "Z",
            "position": 2,
            "stddev": 0.06741955641,
            "variance": 0.004545396586
          },
          {
            "average": 14841.02741,
            "count": 49799,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10747.15404,
            "variance": 115501319.9
          },
          {
            "average": 1,
            "count": 49799,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 49799,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.509367658,
            "count": 49799,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999172587,
            "variance": 0.2499172655
          },
          {
            "average": 0.0008835518786,
            "count": 49799,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02971176436,
            "variance": 0.0008827889417
          },
          {
            "average": 7.458081488,
            "count": 49799,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.665458265,
            "variance": 7.10466776
          },
          {
            "average": -3.558452419,
            "count": 49799,
            "maximum": 16.20000076,
            "minimum": -11.50800037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.250572711,
            "variance": 39.06965922
          },
          {
            "average": 0.492017912,
            "count": 49799,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999413018,
            "variance": 0.2499413053
          },
          {
            "average": 404.7646338,
            "count": 49799,
            "maximum": 406,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5884252619,
            "variance": 0.3462442889
          },
          {
            "average": 220414368.7,
            "count": 49799,
            "maximum": 220414926.1,
            "minimum": 220413792.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 402.7967817,
            "variance": 162245.2473
          },
          {
            "average": 0.492017912,
            "count": 49799,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999413018,
            "variance": 0.2499413053
          },
          {
            "average": 0,
            "count": 49799,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 49799,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 49799,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08313419948,
            "count": 49799,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2760877306,
            "variance": 0.076224435
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104132.4846,
          2367045.757,
          0.9424095325,
          -104042.4446,
          2367168.357,
          1.462409533
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104132.48464229831,
                2367045.7572665075,
                0.942409532517372
              ],
              [
                -104132.48464229831,
                2367168.357266507,
                0.942409532517372
              ],
              [
                -104042.4446422983,
                2367168.357266507,
                1.462409532517372
              ],
              [
                -104042.4446422983,
                2367045.7572665075,
                1.462409532517372
              ],
              [
                -104132.48464229831,
                2367045.7572665075,
                0.942409532517372
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:08:46+00:00",
        "end_time": "2018-09-08T03:49:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2042.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2042.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2042.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2042.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8361641,
            71.28089178,
            0.9424095325,
            -156.8335724,
            71.2820523,
            1.462409533
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83602161068822,
                  71.28089177647362,
                  0.942409532517372
                ],
                [
                  -156.83616411917527,
                  71.28201700070534,
                  0.942409532517372
                ],
                [
                  -156.83371475636432,
                  71.28205229897615,
                  1.462409532517372
                ],
                [
                  -156.83357237065115,
                  71.28092707270433,
                  1.462409532517372
                ],
                [
                  -156.83602161068822,
                  71.28089177647362,
                  0.942409532517372
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2042.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2042.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:08:46Z",
            "pc:count": 49799,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104074.6689,
                "count": 49799,
                "maximum": -104042.4446,
                "minimum": -104132.4846,
                "name": "X",
                "position": 0,
                "stddev": 20.24024951,
                "variance": 409.6677004
              },
              {
                "average": 2367087.94,
                "count": 49799,
                "maximum": 2367168.357,
                "minimum": 2367045.757,
                "name": "Y",
                "position": 1,
                "stddev": 28.40963542,
                "variance": 807.1073847
              },
              {
                "average": 1.170567126,
                "count": 49799,
                "maximum": 1.462409533,
                "minimum": 0.9424095325,
                "name": "Z",
                "position": 2,
                "stddev": 0.06741955641,
                "variance": 0.004545396586
              },
              {
                "average": 14841.02741,
                "count": 49799,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10747.15404,
                "variance": 115501319.9
              },
              {
                "average": 1,
                "count": 49799,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 49799,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.509367658,
                "count": 49799,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999172587,
                "variance": 0.2499172655
              },
              {
                "average": 0.0008835518786,
                "count": 49799,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02971176436,
                "variance": 0.0008827889417
              },
              {
                "average": 7.458081488,
                "count": 49799,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.665458265,
                "variance": 7.10466776
              },
              {
                "average": -3.558452419,
                "count": 49799,
                "maximum": 16.20000076,
                "minimum": -11.50800037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.250572711,
                "variance": 39.06965922
              },
              {
                "average": 0.492017912,
                "count": 49799,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999413018,
                "variance": 0.2499413053
              },
              {
                "average": 404.7646338,
                "count": 49799,
                "maximum": 406,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5884252619,
                "variance": 0.3462442889
              },
              {
                "average": 220414368.7,
                "count": 49799,
                "maximum": 220414926.1,
                "minimum": 220413792.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 402.7967817,
                "variance": 162245.2473
              },
              {
                "average": 0.492017912,
                "count": 49799,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999413018,
                "variance": 0.2499413053
              },
              {
                "average": 0,
                "count": 49799,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 49799,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 49799,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08313419948,
                "count": 49799,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2760877306,
                "variance": 0.076224435
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104132.4846,
              2367045.757,
              0.9424095325,
              -104042.4446,
              2367168.357,
              1.462409533
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104132.48464229831,
                    2367045.7572665075,
                    0.942409532517372
                  ],
                  [
                    -104132.48464229831,
                    2367168.357266507,
                    0.942409532517372
                  ],
                  [
                    -104042.4446422983,
                    2367168.357266507,
                    1.462409532517372
                  ],
                  [
                    -104042.4446422983,
                    2367045.7572665075,
                    1.462409532517372
                  ],
                  [
                    -104132.48464229831,
                    2367045.7572665075,
                    0.942409532517372
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:08:46+00:00",
            "end_time": "2018-09-08T03:49:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2119.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69286730520642,
              71.28793384013834,
              4.929654475575191
            ],
            [
              -156.6933903224797,
              71.29228155704864,
              4.929654475575191
            ],
            [
              -156.67989556976897,
              71.29246577602218,
              6.849654475575191
            ],
            [
              -156.67937516727596,
              71.28811801795509,
              6.849654475575191
            ],
            [
              -156.69286730520642,
              71.28793384013834,
              4.929654475575191
            ]
          ]
        ]
      },
      "bbox": [
        -156.6933903,
        71.28793384,
        4.929654476,
        -156.6793752,
        71.29246578,
        6.849654476
      ],
      "properties": {
        "datetime": "2018-09-08T05:24:20Z",
        "pc:count": 3195052,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98597.83176,
            "count": 3195052,
            "maximum": -98352.25634,
            "minimum": -98848.05634,
            "name": "X",
            "position": 0,
            "stddev": 135.7618259,
            "variance": 18431.27338
          },
          {
            "average": 2367829.639,
            "count": 3195052,
            "maximum": 2368066.524,
            "minimum": 2367592.884,
            "name": "Y",
            "position": 1,
            "stddev": 128.2163095,
            "variance": 16439.42202
          },
          {
            "average": 5.923246915,
            "count": 3195052,
            "maximum": 6.849654476,
            "minimum": 4.929654476,
            "name": "Z",
            "position": 2,
            "stddev": 0.4384785269,
            "variance": 0.1922634186
          },
          {
            "average": 41102.26731,
            "count": 3195052,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9782.82551,
            "variance": 95703674.96
          },
          {
            "average": 1,
            "count": 3195052,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3195052,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5035404745,
            "count": 3195052,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999875431,
            "variance": 0.2499875433
          },
          {
            "average": 0.000425032206,
            "count": 3195052,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02061193069,
            "variance": 0.0004248516866
          },
          {
            "average": 1.288135843,
            "count": 3195052,
            "maximum": 2,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4528947372,
            "variance": 0.205113643
          },
          {
            "average": 0.9353939272,
            "count": 3195052,
            "maximum": 16.36199951,
            "minimum": -15.75599957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60215505,
            "variance": 112.4056918
          },
          {
            "average": 0.5435072731,
            "count": 3195052,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981035985,
            "variance": 0.2481071948
          },
          {
            "average": 412.4690775,
            "count": 3195052,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9791150864,
            "variance": 0.9586663524
          },
          {
            "average": 220418675.2,
            "count": 3195052,
            "maximum": 220419460.7,
            "minimum": 220417909.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.4235435,
            "variance": 276069.9001
          },
          {
            "average": 0.5435072731,
            "count": 3195052,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981035985,
            "variance": 0.2481071948
          },
          {
            "average": 0,
            "count": 3195052,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3195052,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3195052,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2613419124,
            "count": 3195052,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4393658813,
            "variance": 0.1930423777
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98848.05634,
          2367592.884,
          4.929654476,
          -98352.25634,
          2368066.524,
          6.849654476
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98848.05633923502,
                2367592.883941182,
                4.929654475575191
              ],
              [
                -98848.05633923502,
                2368066.5239411816,
                4.929654475575191
              ],
              [
                -98352.25633923503,
                2368066.5239411816,
                6.849654475575191
              ],
              [
                -98352.25633923503,
                2367592.883941182,
                6.849654475575191
              ],
              [
                -98848.05633923502,
                2367592.883941182,
                4.929654475575191
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:24:20+00:00",
        "end_time": "2018-09-08T04:58:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2119.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2119.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2119.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2119.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6933903,
            71.28793384,
            4.929654476,
            -156.6793752,
            71.29246578,
            6.849654476
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69286730520642,
                  71.28793384013834,
                  4.929654475575191
                ],
                [
                  -156.6933903224797,
                  71.29228155704864,
                  4.929654475575191
                ],
                [
                  -156.67989556976897,
                  71.29246577602218,
                  6.849654475575191
                ],
                [
                  -156.67937516727596,
                  71.28811801795509,
                  6.849654475575191
                ],
                [
                  -156.69286730520642,
                  71.28793384013834,
                  4.929654475575191
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2119.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2119.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:24:20Z",
            "pc:count": 3195052,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98597.83176,
                "count": 3195052,
                "maximum": -98352.25634,
                "minimum": -98848.05634,
                "name": "X",
                "position": 0,
                "stddev": 135.7618259,
                "variance": 18431.27338
              },
              {
                "average": 2367829.639,
                "count": 3195052,
                "maximum": 2368066.524,
                "minimum": 2367592.884,
                "name": "Y",
                "position": 1,
                "stddev": 128.2163095,
                "variance": 16439.42202
              },
              {
                "average": 5.923246915,
                "count": 3195052,
                "maximum": 6.849654476,
                "minimum": 4.929654476,
                "name": "Z",
                "position": 2,
                "stddev": 0.4384785269,
                "variance": 0.1922634186
              },
              {
                "average": 41102.26731,
                "count": 3195052,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9782.82551,
                "variance": 95703674.96
              },
              {
                "average": 1,
                "count": 3195052,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3195052,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5035404745,
                "count": 3195052,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999875431,
                "variance": 0.2499875433
              },
              {
                "average": 0.000425032206,
                "count": 3195052,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02061193069,
                "variance": 0.0004248516866
              },
              {
                "average": 1.288135843,
                "count": 3195052,
                "maximum": 2,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4528947372,
                "variance": 0.205113643
              },
              {
                "average": 0.9353939272,
                "count": 3195052,
                "maximum": 16.36199951,
                "minimum": -15.75599957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60215505,
                "variance": 112.4056918
              },
              {
                "average": 0.5435072731,
                "count": 3195052,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981035985,
                "variance": 0.2481071948
              },
              {
                "average": 412.4690775,
                "count": 3195052,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9791150864,
                "variance": 0.9586663524
              },
              {
                "average": 220418675.2,
                "count": 3195052,
                "maximum": 220419460.7,
                "minimum": 220417909.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.4235435,
                "variance": 276069.9001
              },
              {
                "average": 0.5435072731,
                "count": 3195052,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981035985,
                "variance": 0.2481071948
              },
              {
                "average": 0,
                "count": 3195052,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3195052,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3195052,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2613419124,
                "count": 3195052,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4393658813,
                "variance": 0.1930423777
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98848.05634,
              2367592.884,
              4.929654476,
              -98352.25634,
              2368066.524,
              6.849654476
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98848.05633923502,
                    2367592.883941182,
                    4.929654475575191
                  ],
                  [
                    -98848.05633923502,
                    2368066.5239411816,
                    4.929654475575191
                  ],
                  [
                    -98352.25633923503,
                    2368066.5239411816,
                    6.849654475575191
                  ],
                  [
                    -98352.25633923503,
                    2367592.883941182,
                    6.849654475575191
                  ],
                  [
                    -98848.05633923502,
                    2367592.883941182,
                    4.929654475575191
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:24:20+00:00",
            "end_time": "2018-09-08T04:58:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2043.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83374211973552,
              71.28066249708696,
              0.85536401636886
            ],
            [
              -156.8342768975205,
              71.2848879133711,
              0.85536401636886
            ],
            [
              -156.82079213716207,
              71.2850817151449,
              75.41536401636887
            ],
            [
              -156.82025989757597,
              71.28085625679866,
              75.41536401636887
            ],
            [
              -156.83374211973552,
              71.28066249708696,
              0.85536401636886
            ]
          ]
        ]
      },
      "bbox": [
        -156.8342769,
        71.2806625,
        0.8553640164,
        -156.8202599,
        71.28508172,
        75.41536402
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:59Z",
        "pc:count": 1490896,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103778.5087,
            "count": 1490896,
            "maximum": -103554.2622,
            "minimum": -104049.9022,
            "name": "X",
            "position": 0,
            "stddev": 127.2654498,
            "variance": 16196.49471
          },
          {
            "average": 2367223.409,
            "count": 1490896,
            "maximum": 2367477.628,
            "minimum": 2367017.248,
            "name": "Y",
            "position": 1,
            "stddev": 122.608968,
            "variance": 15032.95904
          },
          {
            "average": 1.166397965,
            "count": 1490896,
            "maximum": 75.41536402,
            "minimum": 0.8553640164,
            "name": "Z",
            "position": 2,
            "stddev": 0.1872637917,
            "variance": 0.03506772768
          },
          {
            "average": 13831.63108,
            "count": 1490896,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10640.04948,
            "variance": 113210652.9
          },
          {
            "average": 1.000001341,
            "count": 1490896,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001158220313,
            "variance": 1.341474294e-06
          },
          {
            "average": 1.000002683,
            "count": 1490896,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001637969776,
            "variance": 2.682944988e-06
          },
          {
            "average": 0.5030230143,
            "count": 1490896,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499991029,
            "variance": 0.2499910291
          },
          {
            "average": 0.0005915905603,
            "count": 1490896,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0243154473,
            "variance": 0.0005912409775
          },
          {
            "average": 7.611881714,
            "count": 1490896,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.537227798,
            "variance": 6.437524898
          },
          {
            "average": -0.7812610496,
            "count": 1490896,
            "maximum": 16.38599968,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.757534848,
            "variance": 60.17934692
          },
          {
            "average": 0.4902481461,
            "count": 1490896,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49990506,
            "variance": 0.249905069
          },
          {
            "average": 404.9228129,
            "count": 1490896,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7008804646,
            "variance": 0.4912334257
          },
          {
            "average": 220414436.6,
            "count": 1490896,
            "maximum": 220415719.6,
            "minimum": 220413479.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 423.0650161,
            "variance": 178984.0078
          },
          {
            "average": 0.4902481461,
            "count": 1490896,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49990506,
            "variance": 0.249905069
          },
          {
            "average": 0,
            "count": 1490896,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1490896,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1490896,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05346046941,
            "count": 1490896,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2249499535,
            "variance": 0.05060248156
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104049.9022,
          2367017.248,
          0.8553640164,
          -103554.2622,
          2367477.628,
          75.41536402
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104049.90222281887,
                2367017.2484631822,
                0.85536401636886
              ],
              [
                -104049.90222281887,
                2367477.628463182,
                0.85536401636886
              ],
              [
                -103554.26222281886,
                2367477.628463182,
                75.41536401636887
              ],
              [
                -103554.26222281886,
                2367017.2484631822,
                75.41536401636887
              ],
              [
                -104049.90222281887,
                2367017.2484631822,
                0.85536401636886
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:59+00:00",
        "end_time": "2018-09-08T03:44:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2043.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2043.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2043.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2043.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8342769,
            71.2806625,
            0.8553640164,
            -156.8202599,
            71.28508172,
            75.41536402
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83374211973552,
                  71.28066249708696,
                  0.85536401636886
                ],
                [
                  -156.8342768975205,
                  71.2848879133711,
                  0.85536401636886
                ],
                [
                  -156.82079213716207,
                  71.2850817151449,
                  75.41536401636887
                ],
                [
                  -156.82025989757597,
                  71.28085625679866,
                  75.41536401636887
                ],
                [
                  -156.83374211973552,
                  71.28066249708696,
                  0.85536401636886
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2043.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2043.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:59Z",
            "pc:count": 1490896,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103778.5087,
                "count": 1490896,
                "maximum": -103554.2622,
                "minimum": -104049.9022,
                "name": "X",
                "position": 0,
                "stddev": 127.2654498,
                "variance": 16196.49471
              },
              {
                "average": 2367223.409,
                "count": 1490896,
                "maximum": 2367477.628,
                "minimum": 2367017.248,
                "name": "Y",
                "position": 1,
                "stddev": 122.608968,
                "variance": 15032.95904
              },
              {
                "average": 1.166397965,
                "count": 1490896,
                "maximum": 75.41536402,
                "minimum": 0.8553640164,
                "name": "Z",
                "position": 2,
                "stddev": 0.1872637917,
                "variance": 0.03506772768
              },
              {
                "average": 13831.63108,
                "count": 1490896,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10640.04948,
                "variance": 113210652.9
              },
              {
                "average": 1.000001341,
                "count": 1490896,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001158220313,
                "variance": 1.341474294e-06
              },
              {
                "average": 1.000002683,
                "count": 1490896,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001637969776,
                "variance": 2.682944988e-06
              },
              {
                "average": 0.5030230143,
                "count": 1490896,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499991029,
                "variance": 0.2499910291
              },
              {
                "average": 0.0005915905603,
                "count": 1490896,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0243154473,
                "variance": 0.0005912409775
              },
              {
                "average": 7.611881714,
                "count": 1490896,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.537227798,
                "variance": 6.437524898
              },
              {
                "average": -0.7812610496,
                "count": 1490896,
                "maximum": 16.38599968,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.757534848,
                "variance": 60.17934692
              },
              {
                "average": 0.4902481461,
                "count": 1490896,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49990506,
                "variance": 0.249905069
              },
              {
                "average": 404.9228129,
                "count": 1490896,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7008804646,
                "variance": 0.4912334257
              },
              {
                "average": 220414436.6,
                "count": 1490896,
                "maximum": 220415719.6,
                "minimum": 220413479.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 423.0650161,
                "variance": 178984.0078
              },
              {
                "average": 0.4902481461,
                "count": 1490896,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49990506,
                "variance": 0.249905069
              },
              {
                "average": 0,
                "count": 1490896,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1490896,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1490896,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05346046941,
                "count": 1490896,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2249499535,
                "variance": 0.05060248156
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104049.9022,
              2367017.248,
              0.8553640164,
              -103554.2622,
              2367477.628,
              75.41536402
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104049.90222281887,
                    2367017.2484631822,
                    0.85536401636886
                  ],
                  [
                    -104049.90222281887,
                    2367477.628463182,
                    0.85536401636886
                  ],
                  [
                    -103554.26222281886,
                    2367477.628463182,
                    75.41536401636887
                  ],
                  [
                    -103554.26222281886,
                    2367017.2484631822,
                    75.41536401636887
                  ],
                  [
                    -104049.90222281887,
                    2367017.2484631822,
                    0.85536401636886
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:59+00:00",
            "end_time": "2018-09-08T03:44:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2080.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78245998861513,
              71.28443596799204,
              -7.328459000472513
            ],
            [
              -156.7830002439933,
              71.2887827896291,
              -7.328459000472513
            ],
            [
              -156.76950780212118,
              71.28897315276248,
              30.171540999527487
            ],
            [
              -156.76897015990033,
              71.28462628861331,
              30.171540999527487
            ],
            [
              -156.78245998861513,
              71.28443596799204,
              -7.328459000472513
            ]
          ]
        ]
      },
      "bbox": [
        -156.7830002,
        71.28443597,
        -7.328459,
        -156.7689702,
        71.28897315,
        30.171541
      ],
      "properties": {
        "datetime": "2018-09-08T04:40:45Z",
        "pc:count": 3204380,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101904.0961,
            "count": 3204380,
            "maximum": -101655.0019,
            "minimum": -102150.8219,
            "name": "X",
            "position": 0,
            "stddev": 134.9336074,
            "variance": 18207.07841
          },
          {
            "average": 2367587.105,
            "count": 3204380,
            "maximum": 2367821.613,
            "minimum": 2367348.033,
            "name": "Y",
            "position": 1,
            "stddev": 130.3400751,
            "variance": 16988.53518
          },
          {
            "average": 11.57854832,
            "count": 3204380,
            "maximum": 30.171541,
            "minimum": -7.328459,
            "name": "Z",
            "position": 2,
            "stddev": 2.274904524,
            "variance": 5.175190592
          },
          {
            "average": 28537.50157,
            "count": 3204380,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11519.31149,
            "variance": 132694537.3
          },
          {
            "average": 1.012888297,
            "count": 3204380,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1162856288,
            "variance": 0.01352234746
          },
          {
            "average": 1.025898614,
            "count": 3204380,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1662609513,
            "variance": 0.02764270392
          },
          {
            "average": 0.4995069249,
            "count": 3204380,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998349,
            "variance": 0.2499998349
          },
          {
            "average": 0.0004709179311,
            "count": 3204380,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02169553674,
            "variance": 0.0004706963143
          },
          {
            "average": 1.561565732,
            "count": 3204380,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.079073446,
            "variance": 1.164399502
          },
          {
            "average": -0.4394295779,
            "count": 3204380,
            "maximum": 16.27799988,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.35758529,
            "variance": 107.279573
          },
          {
            "average": 0.4610317753,
            "count": 3204380,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984792423,
            "variance": 0.248481555
          },
          {
            "average": 407.3630506,
            "count": 3204380,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9532754458,
            "variance": 0.9087340755
          },
          {
            "average": 220415802.5,
            "count": 3204380,
            "maximum": 220416845.3,
            "minimum": 220414951.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 562.5281705,
            "variance": 316437.9426
          },
          {
            "average": 0.4610317753,
            "count": 3204380,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984792423,
            "variance": 0.248481555
          },
          {
            "average": 0,
            "count": 3204380,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3204380,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3204380,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2263701558,
            "count": 3204380,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4184814967,
            "variance": 0.175126763
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102150.8219,
          2367348.033,
          -7.328459,
          -101655.0019,
          2367821.613,
          30.171541
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102150.82191347562,
                2367348.032640438,
                -7.328459000472513
              ],
              [
                -102150.82191347562,
                2367821.612640438,
                -7.328459000472513
              ],
              [
                -101655.00191347561,
                2367821.612640438,
                30.171540999527487
              ],
              [
                -101655.00191347561,
                2367348.032640438,
                30.171540999527487
              ],
              [
                -102150.82191347562,
                2367348.032640438,
                -7.328459000472513
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:40:45+00:00",
        "end_time": "2018-09-08T04:09:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2080.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2080.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2080.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2080.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7830002,
            71.28443597,
            -7.328459,
            -156.7689702,
            71.28897315,
            30.171541
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78245998861513,
                  71.28443596799204,
                  -7.328459000472513
                ],
                [
                  -156.7830002439933,
                  71.2887827896291,
                  -7.328459000472513
                ],
                [
                  -156.76950780212118,
                  71.28897315276248,
                  30.171540999527487
                ],
                [
                  -156.76897015990033,
                  71.28462628861331,
                  30.171540999527487
                ],
                [
                  -156.78245998861513,
                  71.28443596799204,
                  -7.328459000472513
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2080.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2080.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:40:45Z",
            "pc:count": 3204380,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101904.0961,
                "count": 3204380,
                "maximum": -101655.0019,
                "minimum": -102150.8219,
                "name": "X",
                "position": 0,
                "stddev": 134.9336074,
                "variance": 18207.07841
              },
              {
                "average": 2367587.105,
                "count": 3204380,
                "maximum": 2367821.613,
                "minimum": 2367348.033,
                "name": "Y",
                "position": 1,
                "stddev": 130.3400751,
                "variance": 16988.53518
              },
              {
                "average": 11.57854832,
                "count": 3204380,
                "maximum": 30.171541,
                "minimum": -7.328459,
                "name": "Z",
                "position": 2,
                "stddev": 2.274904524,
                "variance": 5.175190592
              },
              {
                "average": 28537.50157,
                "count": 3204380,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11519.31149,
                "variance": 132694537.3
              },
              {
                "average": 1.012888297,
                "count": 3204380,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1162856288,
                "variance": 0.01352234746
              },
              {
                "average": 1.025898614,
                "count": 3204380,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1662609513,
                "variance": 0.02764270392
              },
              {
                "average": 0.4995069249,
                "count": 3204380,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998349,
                "variance": 0.2499998349
              },
              {
                "average": 0.0004709179311,
                "count": 3204380,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02169553674,
                "variance": 0.0004706963143
              },
              {
                "average": 1.561565732,
                "count": 3204380,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.079073446,
                "variance": 1.164399502
              },
              {
                "average": -0.4394295779,
                "count": 3204380,
                "maximum": 16.27799988,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.35758529,
                "variance": 107.279573
              },
              {
                "average": 0.4610317753,
                "count": 3204380,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984792423,
                "variance": 0.248481555
              },
              {
                "average": 407.3630506,
                "count": 3204380,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9532754458,
                "variance": 0.9087340755
              },
              {
                "average": 220415802.5,
                "count": 3204380,
                "maximum": 220416845.3,
                "minimum": 220414951.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 562.5281705,
                "variance": 316437.9426
              },
              {
                "average": 0.4610317753,
                "count": 3204380,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984792423,
                "variance": 0.248481555
              },
              {
                "average": 0,
                "count": 3204380,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3204380,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3204380,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2263701558,
                "count": 3204380,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4184814967,
                "variance": 0.175126763
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102150.8219,
              2367348.033,
              -7.328459,
              -101655.0019,
              2367821.613,
              30.171541
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102150.82191347562,
                    2367348.032640438,
                    -7.328459000472513
                  ],
                  [
                    -102150.82191347562,
                    2367821.612640438,
                    -7.328459000472513
                  ],
                  [
                    -101655.00191347561,
                    2367821.612640438,
                    30.171540999527487
                  ],
                  [
                    -101655.00191347561,
                    2367348.032640438,
                    30.171540999527487
                  ],
                  [
                    -102150.82191347562,
                    2367348.032640438,
                    -7.328459000472513
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:40:45+00:00",
            "end_time": "2018-09-08T04:09:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1677.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7592948679706,
              71.24739528505496,
              9.921594288961728
            ],
            [
              -156.7598300372326,
              71.25174347409063,
              9.921594288961728
            ],
            [
              -156.74636456603363,
              71.2519321348035,
              13.04159428896173
            ],
            [
              -156.7458320019434,
              71.24758390371251,
              13.04159428896173
            ],
            [
              -156.7592948679706,
              71.24739528505496,
              9.921594288961728
            ]
          ]
        ]
      },
      "bbox": [
        -156.75983,
        71.24739529,
        9.921594289,
        -156.745832,
        71.25193213,
        13.04159429
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:32Z",
        "pc:count": 2915597,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101223.7328,
            "count": 2915597,
            "maximum": -100972.725,
            "minimum": -101468.365,
            "name": "X",
            "position": 0,
            "stddev": 128.5271127,
            "variance": 16519.2187
          },
          {
            "average": 2363490.424,
            "count": 2915597,
            "maximum": 2363757.321,
            "minimum": 2363283.481,
            "name": "Y",
            "position": 1,
            "stddev": 128.1588872,
            "variance": 16424.70038
          },
          {
            "average": 10.76659768,
            "count": 2915597,
            "maximum": 13.04159429,
            "minimum": 9.921594289,
            "name": "Z",
            "position": 2,
            "stddev": 0.7026710561,
            "variance": 0.4937466131
          },
          {
            "average": 36365.54973,
            "count": 2915597,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 15718.18625,
            "variance": 247061379.1
          },
          {
            "average": 1.000005145,
            "count": 2915597,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002268197354,
            "variance": 5.144719237e-06
          },
          {
            "average": 1.000010289,
            "count": 2915597,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003207707209,
            "variance": 1.028938554e-05
          },
          {
            "average": 0.5038954286,
            "count": 2915597,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999849111,
            "variance": 0.2499849114
          },
          {
            "average": 0.0005696946457,
            "count": 2915597,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02386148128,
            "variance": 0.000569370289
          },
          {
            "average": 2.20774819,
            "count": 2915597,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.608393223,
            "variance": 6.803715207
          },
          {
            "average": -2.362417012,
            "count": 2915597,
            "maximum": 16.36199951,
            "minimum": -19.68000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.35817432,
            "variance": 107.2917753
          },
          {
            "average": 0.4831696562,
            "count": 2915597,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997167449,
            "variance": 0.2497168252
          },
          {
            "average": 430.0867394,
            "count": 2915597,
            "maximum": 465,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.00055973,
            "variance": 441.023509
          },
          {
            "average": 220504404.8,
            "count": 2915597,
            "maximum": 220726252.7,
            "minimum": 220420167.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 135695.0906,
            "variance": 18413157620.0
          },
          {
            "average": 0.4831696562,
            "count": 2915597,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997167449,
            "variance": 0.2497168252
          },
          {
            "average": 0,
            "count": 2915597,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2915597,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2915597,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2086426896,
            "count": 2915597,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4063384972,
            "variance": 0.1651109743
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101468.365,
          2363283.481,
          9.921594289,
          -100972.725,
          2363757.321,
          13.04159429
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101468.36497407535,
                2363283.4808401447,
                9.921594288961728
              ],
              [
                -101468.36497407535,
                2363757.3208401445,
                9.921594288961728
              ],
              [
                -100972.72497407533,
                2363757.3208401445,
                13.04159428896173
              ],
              [
                -100972.72497407533,
                2363283.4808401447,
                13.04159428896173
              ],
              [
                -101468.36497407535,
                2363283.4808401447,
                9.921594288961728
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:32+00:00",
        "end_time": "2018-09-08T05:36:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1677.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1677.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1677.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1677.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.75983,
            71.24739529,
            9.921594289,
            -156.745832,
            71.25193213,
            13.04159429
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7592948679706,
                  71.24739528505496,
                  9.921594288961728
                ],
                [
                  -156.7598300372326,
                  71.25174347409063,
                  9.921594288961728
                ],
                [
                  -156.74636456603363,
                  71.2519321348035,
                  13.04159428896173
                ],
                [
                  -156.7458320019434,
                  71.24758390371251,
                  13.04159428896173
                ],
                [
                  -156.7592948679706,
                  71.24739528505496,
                  9.921594288961728
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1677.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1677.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:32Z",
            "pc:count": 2915597,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101223.7328,
                "count": 2915597,
                "maximum": -100972.725,
                "minimum": -101468.365,
                "name": "X",
                "position": 0,
                "stddev": 128.5271127,
                "variance": 16519.2187
              },
              {
                "average": 2363490.424,
                "count": 2915597,
                "maximum": 2363757.321,
                "minimum": 2363283.481,
                "name": "Y",
                "position": 1,
                "stddev": 128.1588872,
                "variance": 16424.70038
              },
              {
                "average": 10.76659768,
                "count": 2915597,
                "maximum": 13.04159429,
                "minimum": 9.921594289,
                "name": "Z",
                "position": 2,
                "stddev": 0.7026710561,
                "variance": 0.4937466131
              },
              {
                "average": 36365.54973,
                "count": 2915597,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 15718.18625,
                "variance": 247061379.1
              },
              {
                "average": 1.000005145,
                "count": 2915597,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002268197354,
                "variance": 5.144719237e-06
              },
              {
                "average": 1.000010289,
                "count": 2915597,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003207707209,
                "variance": 1.028938554e-05
              },
              {
                "average": 0.5038954286,
                "count": 2915597,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999849111,
                "variance": 0.2499849114
              },
              {
                "average": 0.0005696946457,
                "count": 2915597,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02386148128,
                "variance": 0.000569370289
              },
              {
                "average": 2.20774819,
                "count": 2915597,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.608393223,
                "variance": 6.803715207
              },
              {
                "average": -2.362417012,
                "count": 2915597,
                "maximum": 16.36199951,
                "minimum": -19.68000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.35817432,
                "variance": 107.2917753
              },
              {
                "average": 0.4831696562,
                "count": 2915597,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997167449,
                "variance": 0.2497168252
              },
              {
                "average": 430.0867394,
                "count": 2915597,
                "maximum": 465,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.00055973,
                "variance": 441.023509
              },
              {
                "average": 220504404.8,
                "count": 2915597,
                "maximum": 220726252.7,
                "minimum": 220420167.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 135695.0906,
                "variance": 18413157620.0
              },
              {
                "average": 0.4831696562,
                "count": 2915597,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997167449,
                "variance": 0.2497168252
              },
              {
                "average": 0,
                "count": 2915597,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2915597,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2915597,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2086426896,
                "count": 2915597,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4063384972,
                "variance": 0.1651109743
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101468.365,
              2363283.481,
              9.921594289,
              -100972.725,
              2363757.321,
              13.04159429
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101468.36497407535,
                    2363283.4808401447,
                    9.921594288961728
                  ],
                  [
                    -101468.36497407535,
                    2363757.3208401445,
                    9.921594288961728
                  ],
                  [
                    -100972.72497407533,
                    2363757.3208401445,
                    13.04159428896173
                  ],
                  [
                    -100972.72497407533,
                    2363283.4808401447,
                    13.04159428896173
                  ],
                  [
                    -101468.36497407535,
                    2363283.4808401447,
                    9.921594288961728
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:32+00:00",
            "end_time": "2018-09-08T05:36:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1669.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.86118214234318,
              71.24804081748344,
              1.981055610580972
            ],
            [
              -156.8617369361789,
              71.25238764168155,
              1.981055610580972
            ],
            [
              -156.8482730358275,
              71.2525832666274,
              10.661055610580972
            ],
            [
              -156.84772084576775,
              71.2482363988336,
              10.661055610580972
            ],
            [
              -156.86118214234318,
              71.24804081748344,
              1.981055610580972
            ]
          ]
        ]
      },
      "bbox": [
        -156.8617369,
        71.24804082,
        1.981055611,
        -156.8477208,
        71.25258327,
        10.66105561
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:25Z",
        "pc:count": 2011536,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104959.515,
            "count": 2011536,
            "maximum": -104714.1915,
            "minimum": -105209.7915,
            "name": "X",
            "position": 0,
            "stddev": 136.3082468,
            "variance": 18579.93815
          },
          {
            "average": 2363767.181,
            "count": 2011536,
            "maximum": 2363985.966,
            "minimum": 2363512.246,
            "name": "Y",
            "position": 1,
            "stddev": 136.3012714,
            "variance": 18578.03659
          },
          {
            "average": 5.640531837,
            "count": 2011536,
            "maximum": 10.66105561,
            "minimum": 1.981055611,
            "name": "Z",
            "position": 2,
            "stddev": 2.808115374,
            "variance": 7.885511955
          },
          {
            "average": 41971.84591,
            "count": 2011536,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14859.28648,
            "variance": 220798394.8
          },
          {
            "average": 1,
            "count": 2011536,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2011536,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5047704838,
            "count": 2011536,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999773662,
            "variance": 0.2499773668
          },
          {
            "average": 0.0006616834101,
            "count": 2011536,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02571470229,
            "variance": 0.0006612459139
          },
          {
            "average": 2.801250388,
            "count": 2011536,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.049464611,
            "variance": 9.299234413
          },
          {
            "average": -1.931720011,
            "count": 2011536,
            "maximum": 16.80599976,
            "minimum": -19.75200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.09357817,
            "variance": 101.8803203
          },
          {
            "average": 0.4822712594,
            "count": 2011536,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996857171,
            "variance": 0.2496858159
          },
          {
            "average": 414.0486201,
            "count": 2011536,
            "maximum": 465,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.85722512,
            "variance": 192.0226881
          },
          {
            "average": 220438680.5,
            "count": 2011536,
            "maximum": 220726305.1,
            "minimum": 220416000.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 78083.75165,
            "variance": 6097072272
          },
          {
            "average": 0.4822712594,
            "count": 2011536,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996857171,
            "variance": 0.2496858159
          },
          {
            "average": 0,
            "count": 2011536,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2011536,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2011536,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1686661337,
            "count": 2011536,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3744568584,
            "variance": 0.1402179388
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105209.7915,
          2363512.246,
          1.981055611,
          -104714.1915,
          2363985.966,
          10.66105561
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105209.79146922847,
                2363512.2463729796,
                1.981055610580972
              ],
              [
                -105209.79146922847,
                2363985.9663729793,
                1.981055610580972
              ],
              [
                -104714.19146922846,
                2363985.9663729793,
                10.661055610580972
              ],
              [
                -104714.19146922846,
                2363512.2463729796,
                10.661055610580972
              ],
              [
                -105209.79146922847,
                2363512.2463729796,
                1.981055610580972
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:25+00:00",
        "end_time": "2018-09-08T04:26:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1669.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1669.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1669.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1669.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8617369,
            71.24804082,
            1.981055611,
            -156.8477208,
            71.25258327,
            10.66105561
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.86118214234318,
                  71.24804081748344,
                  1.981055610580972
                ],
                [
                  -156.8617369361789,
                  71.25238764168155,
                  1.981055610580972
                ],
                [
                  -156.8482730358275,
                  71.2525832666274,
                  10.661055610580972
                ],
                [
                  -156.84772084576775,
                  71.2482363988336,
                  10.661055610580972
                ],
                [
                  -156.86118214234318,
                  71.24804081748344,
                  1.981055610580972
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1669.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1669.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:25Z",
            "pc:count": 2011536,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104959.515,
                "count": 2011536,
                "maximum": -104714.1915,
                "minimum": -105209.7915,
                "name": "X",
                "position": 0,
                "stddev": 136.3082468,
                "variance": 18579.93815
              },
              {
                "average": 2363767.181,
                "count": 2011536,
                "maximum": 2363985.966,
                "minimum": 2363512.246,
                "name": "Y",
                "position": 1,
                "stddev": 136.3012714,
                "variance": 18578.03659
              },
              {
                "average": 5.640531837,
                "count": 2011536,
                "maximum": 10.66105561,
                "minimum": 1.981055611,
                "name": "Z",
                "position": 2,
                "stddev": 2.808115374,
                "variance": 7.885511955
              },
              {
                "average": 41971.84591,
                "count": 2011536,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14859.28648,
                "variance": 220798394.8
              },
              {
                "average": 1,
                "count": 2011536,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2011536,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5047704838,
                "count": 2011536,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999773662,
                "variance": 0.2499773668
              },
              {
                "average": 0.0006616834101,
                "count": 2011536,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02571470229,
                "variance": 0.0006612459139
              },
              {
                "average": 2.801250388,
                "count": 2011536,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.049464611,
                "variance": 9.299234413
              },
              {
                "average": -1.931720011,
                "count": 2011536,
                "maximum": 16.80599976,
                "minimum": -19.75200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.09357817,
                "variance": 101.8803203
              },
              {
                "average": 0.4822712594,
                "count": 2011536,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996857171,
                "variance": 0.2496858159
              },
              {
                "average": 414.0486201,
                "count": 2011536,
                "maximum": 465,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.85722512,
                "variance": 192.0226881
              },
              {
                "average": 220438680.5,
                "count": 2011536,
                "maximum": 220726305.1,
                "minimum": 220416000.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 78083.75165,
                "variance": 6097072272
              },
              {
                "average": 0.4822712594,
                "count": 2011536,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996857171,
                "variance": 0.2496858159
              },
              {
                "average": 0,
                "count": 2011536,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2011536,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2011536,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1686661337,
                "count": 2011536,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3744568584,
                "variance": 0.1402179388
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105209.7915,
              2363512.246,
              1.981055611,
              -104714.1915,
              2363985.966,
              10.66105561
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105209.79146922847,
                    2363512.2463729796,
                    1.981055610580972
                  ],
                  [
                    -105209.79146922847,
                    2363985.9663729793,
                    1.981055610580972
                  ],
                  [
                    -104714.19146922846,
                    2363985.9663729793,
                    10.661055610580972
                  ],
                  [
                    -104714.19146922846,
                    2363512.2463729796,
                    10.661055610580972
                  ],
                  [
                    -105209.79146922847,
                    2363512.2463729796,
                    1.981055610580972
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:25+00:00",
            "end_time": "2018-09-08T04:26:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1781.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78425550326816,
              71.25576590162191,
              8.327748286027159
            ],
            [
              -156.78479441250906,
              71.26010380454376,
              8.327748286027159
            ],
            [
              -156.77132576218742,
              71.26029416250607,
              146.12774828602716
            ],
            [
              -156.770789453312,
              71.25595621723049,
              146.12774828602716
            ],
            [
              -156.78425550326816,
              71.25576590162191,
              8.327748286027159
            ]
          ]
        ]
      },
      "bbox": [
        -156.7847944,
        71.2557659,
        8.327748286,
        -156.7707895,
        71.26029416,
        146.1277483
      ],
      "properties": {
        "datetime": "2018-09-08T05:36:16Z",
        "pc:count": 2875914,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102094.2482,
            "count": 2875914,
            "maximum": -101851.9363,
            "minimum": -102347.5163,
            "name": "X",
            "position": 0,
            "stddev": 135.2765042,
            "variance": 18299.73259
          },
          {
            "average": 2364478.72,
            "count": 2875914,
            "maximum": 2364705.07,
            "minimum": 2364232.37,
            "name": "Y",
            "position": 1,
            "stddev": 127.4503263,
            "variance": 16243.58568
          },
          {
            "average": 9.942443812,
            "count": 2875914,
            "maximum": 146.1277483,
            "minimum": 8.327748286,
            "name": "Z",
            "position": 2,
            "stddev": 0.7792085806,
            "variance": 0.6071660121
          },
          {
            "average": 39195.65692,
            "count": 2875914,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12883.85726,
            "variance": 165993777.9
          },
          {
            "average": 1.000000348,
            "count": 2875914,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005896740995,
            "variance": 3.477155436e-07
          },
          {
            "average": 1.000000695,
            "count": 2875914,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008339249639,
            "variance": 6.954308455e-07
          },
          {
            "average": 0.4992962237,
            "count": 2875914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995916,
            "variance": 0.2499995916
          },
          {
            "average": 0.0004749794326,
            "count": 2875914,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02178885018,
            "variance": 0.0004747539922
          },
          {
            "average": 1.348614041,
            "count": 2875914,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.759711202,
            "variance": 0.5771611105
          },
          {
            "average": -0.738719611,
            "count": 2875914,
            "maximum": 16.3560009,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.33401701,
            "variance": 106.7919076
          },
          {
            "average": 0.4542023857,
            "count": 2875914,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978982474,
            "variance": 0.2479026647
          },
          {
            "average": 413.6264603,
            "count": 2875914,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9647434472,
            "variance": 0.9307299189
          },
          {
            "average": 220419321.4,
            "count": 2875914,
            "maximum": 220420176.2,
            "minimum": 220418289.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 557.489017,
            "variance": 310794.0041
          },
          {
            "average": 0.4542023857,
            "count": 2875914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978982474,
            "variance": 0.2479026647
          },
          {
            "average": 0,
            "count": 2875914,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2875914,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2875914,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.229735312,
            "count": 2875914,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4206626439,
            "variance": 0.1769570599
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102347.5163,
          2364232.37,
          8.327748286,
          -101851.9363,
          2364705.07,
          146.1277483
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102347.51629392129,
                2364232.370111268,
                8.327748286027159
              ],
              [
                -102347.51629392129,
                2364705.070111268,
                8.327748286027159
              ],
              [
                -101851.9362939213,
                2364705.070111268,
                146.12774828602716
              ],
              [
                -101851.9362939213,
                2364232.370111268,
                146.12774828602716
              ],
              [
                -102347.51629392129,
                2364232.370111268,
                8.327748286027159
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:36:16+00:00",
        "end_time": "2018-09-08T05:04:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1781.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1781.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1781.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1781.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7847944,
            71.2557659,
            8.327748286,
            -156.7707895,
            71.26029416,
            146.1277483
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78425550326816,
                  71.25576590162191,
                  8.327748286027159
                ],
                [
                  -156.78479441250906,
                  71.26010380454376,
                  8.327748286027159
                ],
                [
                  -156.77132576218742,
                  71.26029416250607,
                  146.12774828602716
                ],
                [
                  -156.770789453312,
                  71.25595621723049,
                  146.12774828602716
                ],
                [
                  -156.78425550326816,
                  71.25576590162191,
                  8.327748286027159
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1781.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1781.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:36:16Z",
            "pc:count": 2875914,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102094.2482,
                "count": 2875914,
                "maximum": -101851.9363,
                "minimum": -102347.5163,
                "name": "X",
                "position": 0,
                "stddev": 135.2765042,
                "variance": 18299.73259
              },
              {
                "average": 2364478.72,
                "count": 2875914,
                "maximum": 2364705.07,
                "minimum": 2364232.37,
                "name": "Y",
                "position": 1,
                "stddev": 127.4503263,
                "variance": 16243.58568
              },
              {
                "average": 9.942443812,
                "count": 2875914,
                "maximum": 146.1277483,
                "minimum": 8.327748286,
                "name": "Z",
                "position": 2,
                "stddev": 0.7792085806,
                "variance": 0.6071660121
              },
              {
                "average": 39195.65692,
                "count": 2875914,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12883.85726,
                "variance": 165993777.9
              },
              {
                "average": 1.000000348,
                "count": 2875914,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005896740995,
                "variance": 3.477155436e-07
              },
              {
                "average": 1.000000695,
                "count": 2875914,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008339249639,
                "variance": 6.954308455e-07
              },
              {
                "average": 0.4992962237,
                "count": 2875914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995916,
                "variance": 0.2499995916
              },
              {
                "average": 0.0004749794326,
                "count": 2875914,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02178885018,
                "variance": 0.0004747539922
              },
              {
                "average": 1.348614041,
                "count": 2875914,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.759711202,
                "variance": 0.5771611105
              },
              {
                "average": -0.738719611,
                "count": 2875914,
                "maximum": 16.3560009,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.33401701,
                "variance": 106.7919076
              },
              {
                "average": 0.4542023857,
                "count": 2875914,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978982474,
                "variance": 0.2479026647
              },
              {
                "average": 413.6264603,
                "count": 2875914,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9647434472,
                "variance": 0.9307299189
              },
              {
                "average": 220419321.4,
                "count": 2875914,
                "maximum": 220420176.2,
                "minimum": 220418289.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 557.489017,
                "variance": 310794.0041
              },
              {
                "average": 0.4542023857,
                "count": 2875914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978982474,
                "variance": 0.2479026647
              },
              {
                "average": 0,
                "count": 2875914,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2875914,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2875914,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.229735312,
                "count": 2875914,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4206626439,
                "variance": 0.1769570599
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102347.5163,
              2364232.37,
              8.327748286,
              -101851.9363,
              2364705.07,
              146.1277483
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102347.51629392129,
                    2364232.370111268,
                    8.327748286027159
                  ],
                  [
                    -102347.51629392129,
                    2364705.070111268,
                    8.327748286027159
                  ],
                  [
                    -101851.9362939213,
                    2364705.070111268,
                    146.12774828602716
                  ],
                  [
                    -101851.9362939213,
                    2364232.370111268,
                    146.12774828602716
                  ],
                  [
                    -102347.51629392129,
                    2364232.370111268,
                    8.327748286027159
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:36:16+00:00",
            "end_time": "2018-09-08T05:04:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1836.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74576499645866,
              71.2596018444996,
              9.835082266395629
            ],
            [
              -156.7462977880348,
              71.26395005902724,
              9.835082266395629
            ],
            [
              -156.73282324148528,
              71.2641378307336,
              11.855082266395629
            ],
            [
              -156.73229305810165,
              71.25978957431909,
              11.855082266395629
            ],
            [
              -156.74576499645866,
              71.2596018444996,
              9.835082266395629
            ]
          ]
        ]
      },
      "bbox": [
        -156.7462978,
        71.25960184,
        9.835082266,
        -156.7322931,
        71.26413783,
        11.85508227
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:08Z",
        "pc:count": 3620357,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100659.6274,
            "count": 3620357,
            "maximum": -100420.4787,
            "minimum": -100916.1787,
            "name": "X",
            "position": 0,
            "stddev": 135.8474622,
            "variance": 18454.53298
          },
          {
            "average": 2364825.088,
            "count": 3620357,
            "maximum": 2365064.539,
            "minimum": 2364590.739,
            "name": "Y",
            "position": 1,
            "stddev": 130.8627449,
            "variance": 17125.058
          },
          {
            "average": 10.78899709,
            "count": 3620357,
            "maximum": 11.85508227,
            "minimum": 9.835082266,
            "name": "Z",
            "position": 2,
            "stddev": 0.3441210739,
            "variance": 0.1184193135
          },
          {
            "average": 39389.71103,
            "count": 3620357,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11225.16593,
            "variance": 126004350.2
          },
          {
            "average": 1,
            "count": 3620357,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3620357,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5013762455,
            "count": 3620357,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998175,
            "variance": 0.249998175
          },
          {
            "average": 0.0005361349723,
            "count": 3620357,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02314838395,
            "variance": 0.0005358476796
          },
          {
            "average": 1.295805911,
            "count": 3620357,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5595662729,
            "variance": 0.3131144138
          },
          {
            "average": -1.622055643,
            "count": 3620357,
            "maximum": 16.35000038,
            "minimum": -19.58399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53817818,
            "variance": 111.0531994
          },
          {
            "average": 0.4610465211,
            "count": 3620357,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984803859,
            "variance": 0.2484826951
          },
          {
            "average": 419.9944367,
            "count": 3620357,
            "maximum": 463,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.21455065,
            "variance": 202.0534503
          },
          {
            "average": 220450821.7,
            "count": 3620357,
            "maximum": 220725448.6,
            "minimum": 220419074.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 91693.40602,
            "variance": 8407680708
          },
          {
            "average": 0.4610465211,
            "count": 3620357,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984803859,
            "variance": 0.2484826951
          },
          {
            "average": 0,
            "count": 3620357,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3620357,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3620357,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.230702939,
            "count": 3620357,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.421282734,
            "variance": 0.1774791419
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100916.1787,
          2364590.739,
          9.835082266,
          -100420.4787,
          2365064.539,
          11.85508227
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100916.17874580773,
                2364590.739329656,
                9.835082266395629
              ],
              [
                -100916.17874580773,
                2365064.539329656,
                9.835082266395629
              ],
              [
                -100420.47874580772,
                2365064.539329656,
                11.855082266395629
              ],
              [
                -100420.47874580772,
                2364590.739329656,
                11.855082266395629
              ],
              [
                -100916.17874580773,
                2364590.739329656,
                9.835082266395629
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:08+00:00",
        "end_time": "2018-09-08T05:17:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1836.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1836.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1836.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1836.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7462978,
            71.25960184,
            9.835082266,
            -156.7322931,
            71.26413783,
            11.85508227
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74576499645866,
                  71.2596018444996,
                  9.835082266395629
                ],
                [
                  -156.7462977880348,
                  71.26395005902724,
                  9.835082266395629
                ],
                [
                  -156.73282324148528,
                  71.2641378307336,
                  11.855082266395629
                ],
                [
                  -156.73229305810165,
                  71.25978957431909,
                  11.855082266395629
                ],
                [
                  -156.74576499645866,
                  71.2596018444996,
                  9.835082266395629
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1836.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1836.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:08Z",
            "pc:count": 3620357,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100659.6274,
                "count": 3620357,
                "maximum": -100420.4787,
                "minimum": -100916.1787,
                "name": "X",
                "position": 0,
                "stddev": 135.8474622,
                "variance": 18454.53298
              },
              {
                "average": 2364825.088,
                "count": 3620357,
                "maximum": 2365064.539,
                "minimum": 2364590.739,
                "name": "Y",
                "position": 1,
                "stddev": 130.8627449,
                "variance": 17125.058
              },
              {
                "average": 10.78899709,
                "count": 3620357,
                "maximum": 11.85508227,
                "minimum": 9.835082266,
                "name": "Z",
                "position": 2,
                "stddev": 0.3441210739,
                "variance": 0.1184193135
              },
              {
                "average": 39389.71103,
                "count": 3620357,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11225.16593,
                "variance": 126004350.2
              },
              {
                "average": 1,
                "count": 3620357,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3620357,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5013762455,
                "count": 3620357,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998175,
                "variance": 0.249998175
              },
              {
                "average": 0.0005361349723,
                "count": 3620357,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02314838395,
                "variance": 0.0005358476796
              },
              {
                "average": 1.295805911,
                "count": 3620357,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5595662729,
                "variance": 0.3131144138
              },
              {
                "average": -1.622055643,
                "count": 3620357,
                "maximum": 16.35000038,
                "minimum": -19.58399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53817818,
                "variance": 111.0531994
              },
              {
                "average": 0.4610465211,
                "count": 3620357,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984803859,
                "variance": 0.2484826951
              },
              {
                "average": 419.9944367,
                "count": 3620357,
                "maximum": 463,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.21455065,
                "variance": 202.0534503
              },
              {
                "average": 220450821.7,
                "count": 3620357,
                "maximum": 220725448.6,
                "minimum": 220419074.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 91693.40602,
                "variance": 8407680708
              },
              {
                "average": 0.4610465211,
                "count": 3620357,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984803859,
                "variance": 0.2484826951
              },
              {
                "average": 0,
                "count": 3620357,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3620357,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3620357,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.230702939,
                "count": 3620357,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.421282734,
                "variance": 0.1774791419
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100916.1787,
              2364590.739,
              9.835082266,
              -100420.4787,
              2365064.539,
              11.85508227
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100916.17874580773,
                    2364590.739329656,
                    9.835082266395629
                  ],
                  [
                    -100916.17874580773,
                    2365064.539329656,
                    9.835082266395629
                  ],
                  [
                    -100420.47874580772,
                    2365064.539329656,
                    11.855082266395629
                  ],
                  [
                    -100420.47874580772,
                    2364590.739329656,
                    11.855082266395629
                  ],
                  [
                    -100916.17874580773,
                    2364590.739329656,
                    9.835082266395629
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:08+00:00",
            "end_time": "2018-09-08T05:17:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1939.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7324887016516,
              71.26771055806047,
              3.791561679553955
            ],
            [
              -156.73301908796316,
              71.27205886174558,
              3.791561679553955
            ],
            [
              -156.71953846827648,
              71.27224574888467,
              10.571561679553955
            ],
            [
              -156.71901069223117,
              71.26789740348973,
              10.571561679553955
            ],
            [
              -156.7324887016516,
              71.26771055806047,
              3.791561679553955
            ]
          ]
        ]
      },
      "bbox": [
        -156.7330191,
        71.26771056,
        3.79156168,
        -156.7190107,
        71.27224575,
        10.57156168
      ],
      "properties": {
        "datetime": "2018-09-08T05:41:51Z",
        "pc:count": 3279167,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100137.6078,
            "count": 3279167,
            "maximum": -99896.45355,
            "minimum": -100392.1935,
            "name": "X",
            "position": 0,
            "stddev": 132.3888545,
            "variance": 17526.8088
          },
          {
            "average": 2365692.671,
            "count": 3279167,
            "maximum": 2365926.44,
            "minimum": 2365452.66,
            "name": "Y",
            "position": 1,
            "stddev": 129.4864871,
            "variance": 16766.75035
          },
          {
            "average": 8.458739704,
            "count": 3279167,
            "maximum": 10.57156168,
            "minimum": 3.79156168,
            "name": "Z",
            "position": 2,
            "stddev": 1.669455032,
            "variance": 2.787080103
          },
          {
            "average": 48734.7684,
            "count": 3279167,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7873.884179,
            "variance": 61998052.06
          },
          {
            "average": 1.000117103,
            "count": 3279167,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01082077785,
            "variance": 0.0001170892332
          },
          {
            "average": 1.000232986,
            "count": 3279167,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01526210299,
            "variance": 0.0002329317877
          },
          {
            "average": 0.5039898852,
            "count": 3279167,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999841568,
            "variance": 0.249984157
          },
          {
            "average": 0.0004043709881,
            "count": 3279167,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02010491471,
            "variance": 0.0004042075955
          },
          {
            "average": 1.333112037,
            "count": 3279167,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.83958316,
            "variance": 0.7048998826
          },
          {
            "average": 0.7153059422,
            "count": 3279167,
            "maximum": 16.3920002,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.49594246,
            "variance": 110.1648081
          },
          {
            "average": 0.5371510509,
            "count": 3279167,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986179652,
            "variance": 0.2486198752
          },
          {
            "average": 414.3299317,
            "count": 3279167,
            "maximum": 416,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9522879903,
            "variance": 0.9068524164
          },
          {
            "average": 220419691.8,
            "count": 3279167,
            "maximum": 220420511.3,
            "minimum": 220419051.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 506.9099398,
            "variance": 256957.6871
          },
          {
            "average": 0.5371510509,
            "count": 3279167,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986179652,
            "variance": 0.2486198752
          },
          {
            "average": 0,
            "count": 3279167,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3279167,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3279167,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2485737994,
            "count": 3279167,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4321862129,
            "variance": 0.1867849226
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100392.1935,
          2365452.66,
          3.79156168,
          -99896.45355,
          2365926.44,
          10.57156168
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100392.19354951751,
                2365452.66033273,
                3.791561679553955
              ],
              [
                -100392.19354951751,
                2365926.4403327303,
                3.791561679553955
              ],
              [
                -99896.45354951752,
                2365926.4403327303,
                10.571561679553955
              ],
              [
                -99896.45354951752,
                2365452.66033273,
                10.571561679553955
              ],
              [
                -100392.19354951751,
                2365452.66033273,
                3.791561679553955
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:41:51+00:00",
        "end_time": "2018-09-08T05:17:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1939.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1939.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1939.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1939.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7330191,
            71.26771056,
            3.79156168,
            -156.7190107,
            71.27224575,
            10.57156168
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7324887016516,
                  71.26771055806047,
                  3.791561679553955
                ],
                [
                  -156.73301908796316,
                  71.27205886174558,
                  3.791561679553955
                ],
                [
                  -156.71953846827648,
                  71.27224574888467,
                  10.571561679553955
                ],
                [
                  -156.71901069223117,
                  71.26789740348973,
                  10.571561679553955
                ],
                [
                  -156.7324887016516,
                  71.26771055806047,
                  3.791561679553955
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1939.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1939.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:41:51Z",
            "pc:count": 3279167,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100137.6078,
                "count": 3279167,
                "maximum": -99896.45355,
                "minimum": -100392.1935,
                "name": "X",
                "position": 0,
                "stddev": 132.3888545,
                "variance": 17526.8088
              },
              {
                "average": 2365692.671,
                "count": 3279167,
                "maximum": 2365926.44,
                "minimum": 2365452.66,
                "name": "Y",
                "position": 1,
                "stddev": 129.4864871,
                "variance": 16766.75035
              },
              {
                "average": 8.458739704,
                "count": 3279167,
                "maximum": 10.57156168,
                "minimum": 3.79156168,
                "name": "Z",
                "position": 2,
                "stddev": 1.669455032,
                "variance": 2.787080103
              },
              {
                "average": 48734.7684,
                "count": 3279167,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7873.884179,
                "variance": 61998052.06
              },
              {
                "average": 1.000117103,
                "count": 3279167,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01082077785,
                "variance": 0.0001170892332
              },
              {
                "average": 1.000232986,
                "count": 3279167,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01526210299,
                "variance": 0.0002329317877
              },
              {
                "average": 0.5039898852,
                "count": 3279167,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999841568,
                "variance": 0.249984157
              },
              {
                "average": 0.0004043709881,
                "count": 3279167,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02010491471,
                "variance": 0.0004042075955
              },
              {
                "average": 1.333112037,
                "count": 3279167,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.83958316,
                "variance": 0.7048998826
              },
              {
                "average": 0.7153059422,
                "count": 3279167,
                "maximum": 16.3920002,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.49594246,
                "variance": 110.1648081
              },
              {
                "average": 0.5371510509,
                "count": 3279167,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986179652,
                "variance": 0.2486198752
              },
              {
                "average": 414.3299317,
                "count": 3279167,
                "maximum": 416,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9522879903,
                "variance": 0.9068524164
              },
              {
                "average": 220419691.8,
                "count": 3279167,
                "maximum": 220420511.3,
                "minimum": 220419051.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 506.9099398,
                "variance": 256957.6871
              },
              {
                "average": 0.5371510509,
                "count": 3279167,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986179652,
                "variance": 0.2486198752
              },
              {
                "average": 0,
                "count": 3279167,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3279167,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3279167,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2485737994,
                "count": 3279167,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4321862129,
                "variance": 0.1867849226
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100392.1935,
              2365452.66,
              3.79156168,
              -99896.45355,
              2365926.44,
              10.57156168
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100392.19354951751,
                    2365452.66033273,
                    3.791561679553955
                  ],
                  [
                    -100392.19354951751,
                    2365926.4403327303,
                    3.791561679553955
                  ],
                  [
                    -99896.45354951752,
                    2365926.4403327303,
                    10.571561679553955
                  ],
                  [
                    -99896.45354951752,
                    2365452.66033273,
                    10.571561679553955
                  ],
                  [
                    -100392.19354951751,
                    2365452.66033273,
                    3.791561679553955
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:41:51+00:00",
            "end_time": "2018-09-08T05:17:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2143.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7819424807593,
              71.29263030860325,
              -9.766890491371045
            ],
            [
              -156.78248265078486,
              71.29697590336224,
              -9.766890491371045
            ],
            [
              -156.76898744573157,
              71.29716621074853,
              27.513109508628958
            ],
            [
              -156.76844988947403,
              71.29282057348175,
              27.513109508628958
            ],
            [
              -156.7819424807593,
              71.29263030860325,
              -9.766890491371045
            ]
          ]
        ]
      },
      "bbox": [
        -156.7824827,
        71.29263031,
        -9.766890491,
        -156.7684499,
        71.29716621,
        27.51310951
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:26Z",
        "pc:count": 2016917,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101858.7372,
            "count": 2016917,
            "maximum": -101598.7407,
            "minimum": -102094.4807,
            "name": "X",
            "position": 0,
            "stddev": 134.6241152,
            "variance": 18123.6524
          },
          {
            "average": 2368487.113,
            "count": 2016917,
            "maximum": 2368711.841,
            "minimum": 2368238.421,
            "name": "Y",
            "position": 1,
            "stddev": 135.5134732,
            "variance": 18363.90141
          },
          {
            "average": 3.142458733,
            "count": 2016917,
            "maximum": 27.51310951,
            "minimum": -9.766890491,
            "name": "Z",
            "position": 2,
            "stddev": 2.487619333,
            "variance": 6.188249948
          },
          {
            "average": 23041.97985,
            "count": 2016917,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12193.86525,
            "variance": 148690349.8
          },
          {
            "average": 1.010022227,
            "count": 2016917,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1027347844,
            "variance": 0.01055443593
          },
          {
            "average": 1.020028092,
            "count": 2016917,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1466900934,
            "variance": 0.0215179835
          },
          {
            "average": 0.4936073225,
            "count": 2016917,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999592559,
            "variance": 0.2499592576
          },
          {
            "average": 0.0005086971849,
            "count": 2016917,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02254858453,
            "variance": 0.0005084386641
          },
          {
            "average": 5.513356772,
            "count": 2016917,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.731946351,
            "variance": 13.92742356
          },
          {
            "average": 2.551085994,
            "count": 2016917,
            "maximum": 16.27799988,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.838223607,
            "variance": 61.43774932
          },
          {
            "average": 0.4656825244,
            "count": 2016917,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988210443,
            "variance": 0.2488224342
          },
          {
            "average": 405.4967567,
            "count": 2016917,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7373785815,
            "variance": 0.5437271725
          },
          {
            "average": 220414753.7,
            "count": 2016917,
            "maximum": 220415686.6,
            "minimum": 220413833.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 402.590071,
            "variance": 162078.7653
          },
          {
            "average": 0.4656825244,
            "count": 2016917,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988210443,
            "variance": 0.2488224342
          },
          {
            "average": 0,
            "count": 2016917,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2016917,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2016917,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08820045644,
            "count": 2016917,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2835862758,
            "variance": 0.0804211758
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102094.4807,
          2368238.421,
          -9.766890491,
          -101598.7407,
          2368711.841,
          27.51310951
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102094.48073900593,
                2368238.420726803,
                -9.766890491371045
              ],
              [
                -102094.48073900593,
                2368711.840726803,
                -9.766890491371045
              ],
              [
                -101598.74073900594,
                2368711.840726803,
                27.513109508628958
              ],
              [
                -101598.74073900594,
                2368238.420726803,
                27.513109508628958
              ],
              [
                -102094.48073900593,
                2368238.420726803,
                -9.766890491371045
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:26+00:00",
        "end_time": "2018-09-08T03:50:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2143.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2143.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2143.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2143.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7824827,
            71.29263031,
            -9.766890491,
            -156.7684499,
            71.29716621,
            27.51310951
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7819424807593,
                  71.29263030860325,
                  -9.766890491371045
                ],
                [
                  -156.78248265078486,
                  71.29697590336224,
                  -9.766890491371045
                ],
                [
                  -156.76898744573157,
                  71.29716621074853,
                  27.513109508628958
                ],
                [
                  -156.76844988947403,
                  71.29282057348175,
                  27.513109508628958
                ],
                [
                  -156.7819424807593,
                  71.29263030860325,
                  -9.766890491371045
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2143.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2143.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:26Z",
            "pc:count": 2016917,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101858.7372,
                "count": 2016917,
                "maximum": -101598.7407,
                "minimum": -102094.4807,
                "name": "X",
                "position": 0,
                "stddev": 134.6241152,
                "variance": 18123.6524
              },
              {
                "average": 2368487.113,
                "count": 2016917,
                "maximum": 2368711.841,
                "minimum": 2368238.421,
                "name": "Y",
                "position": 1,
                "stddev": 135.5134732,
                "variance": 18363.90141
              },
              {
                "average": 3.142458733,
                "count": 2016917,
                "maximum": 27.51310951,
                "minimum": -9.766890491,
                "name": "Z",
                "position": 2,
                "stddev": 2.487619333,
                "variance": 6.188249948
              },
              {
                "average": 23041.97985,
                "count": 2016917,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12193.86525,
                "variance": 148690349.8
              },
              {
                "average": 1.010022227,
                "count": 2016917,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1027347844,
                "variance": 0.01055443593
              },
              {
                "average": 1.020028092,
                "count": 2016917,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1466900934,
                "variance": 0.0215179835
              },
              {
                "average": 0.4936073225,
                "count": 2016917,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999592559,
                "variance": 0.2499592576
              },
              {
                "average": 0.0005086971849,
                "count": 2016917,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02254858453,
                "variance": 0.0005084386641
              },
              {
                "average": 5.513356772,
                "count": 2016917,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.731946351,
                "variance": 13.92742356
              },
              {
                "average": 2.551085994,
                "count": 2016917,
                "maximum": 16.27799988,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.838223607,
                "variance": 61.43774932
              },
              {
                "average": 0.4656825244,
                "count": 2016917,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988210443,
                "variance": 0.2488224342
              },
              {
                "average": 405.4967567,
                "count": 2016917,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7373785815,
                "variance": 0.5437271725
              },
              {
                "average": 220414753.7,
                "count": 2016917,
                "maximum": 220415686.6,
                "minimum": 220413833.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 402.590071,
                "variance": 162078.7653
              },
              {
                "average": 0.4656825244,
                "count": 2016917,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988210443,
                "variance": 0.2488224342
              },
              {
                "average": 0,
                "count": 2016917,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2016917,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2016917,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08820045644,
                "count": 2016917,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2835862758,
                "variance": 0.0804211758
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102094.4807,
              2368238.421,
              -9.766890491,
              -101598.7407,
              2368711.841,
              27.51310951
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102094.48073900593,
                    2368238.420726803,
                    -9.766890491371045
                  ],
                  [
                    -102094.48073900593,
                    2368711.840726803,
                    -9.766890491371045
                  ],
                  [
                    -101598.74073900594,
                    2368711.840726803,
                    27.513109508628958
                  ],
                  [
                    -101598.74073900594,
                    2368238.420726803,
                    27.513109508628958
                  ],
                  [
                    -102094.48073900593,
                    2368238.420726803,
                    -9.766890491371045
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:26+00:00",
            "end_time": "2018-09-08T03:50:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2014.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7574630371491,
              71.27607464083127,
              3.621868205185207
            ],
            [
              -156.757998445486,
              71.28042293798423,
              3.621868205185207
            ],
            [
              -156.74451137037622,
              71.28061156971411,
              16.141868205185204
            ],
            [
              -156.74397857429818,
              71.27626323044167,
              16.141868205185204
            ],
            [
              -156.7574630371491,
              71.27607464083127,
              3.621868205185207
            ]
          ]
        ]
      },
      "bbox": [
        -156.7579984,
        71.27607464,
        3.621868205,
        -156.7439786,
        71.28061157,
        16.14186821
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:40Z",
        "pc:count": 2883506,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101041.6881,
            "count": 2883506,
            "maximum": -100775.6348,
            "minimum": -101271.4348,
            "name": "X",
            "position": 0,
            "stddev": 132.9118033,
            "variance": 17665.54746
          },
          {
            "average": 2366637.376,
            "count": 2883506,
            "maximum": 2366874.106,
            "minimum": 2366400.346,
            "name": "Y",
            "position": 1,
            "stddev": 132.1880728,
            "variance": 17473.6866
          },
          {
            "average": 8.136730498,
            "count": 2883506,
            "maximum": 16.14186821,
            "minimum": 3.621868205,
            "name": "Z",
            "position": 2,
            "stddev": 2.081864237,
            "variance": 4.334158701
          },
          {
            "average": 46854.76317,
            "count": 2883506,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7901.72249,
            "variance": 62437218.31
          },
          {
            "average": 1.000372463,
            "count": 2883506,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01929571571,
            "variance": 0.0003723246447
          },
          {
            "average": 1.000745967,
            "count": 2883506,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02730221018,
            "variance": 0.0007454106808
          },
          {
            "average": 0.5014253482,
            "count": 2883506,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999980551,
            "variance": 0.2499980551
          },
          {
            "average": 0.0004636716553,
            "count": 2883506,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02152804739,
            "variance": 0.0004634568246
          },
          {
            "average": 1.33506953,
            "count": 2883506,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7855077386,
            "variance": 0.6170224074
          },
          {
            "average": 1.278733413,
            "count": 2883506,
            "maximum": 16.3560009,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59326763,
            "variance": 112.2173191
          },
          {
            "average": 0.5185288326,
            "count": 2883506,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996566511,
            "variance": 0.2496567689
          },
          {
            "average": 410.8340669,
            "count": 2883506,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.962841536,
            "variance": 0.9270638235
          },
          {
            "average": 220417755.4,
            "count": 2883506,
            "maximum": 220419060.5,
            "minimum": 220416835.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 529.0759153,
            "variance": 279921.3242
          },
          {
            "average": 0.5185288326,
            "count": 2883506,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996566511,
            "variance": 0.2496567689
          },
          {
            "average": 0,
            "count": 2883506,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2883506,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2883506,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2732947322,
            "count": 2883506,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4456509738,
            "variance": 0.1986047904
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101271.4348,
          2366400.346,
          3.621868205,
          -100775.6348,
          2366874.106,
          16.14186821
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101271.43475830476,
                2366400.346395664,
                3.621868205185207
              ],
              [
                -101271.43475830476,
                2366874.1063956637,
                3.621868205185207
              ],
              [
                -100775.63475830478,
                2366874.1063956637,
                16.141868205185204
              ],
              [
                -100775.63475830478,
                2366400.346395664,
                16.141868205185204
              ],
              [
                -101271.43475830476,
                2366400.346395664,
                3.621868205185207
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:40+00:00",
        "end_time": "2018-09-08T04:40:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2014.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2014.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2014.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2014.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7579984,
            71.27607464,
            3.621868205,
            -156.7439786,
            71.28061157,
            16.14186821
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7574630371491,
                  71.27607464083127,
                  3.621868205185207
                ],
                [
                  -156.757998445486,
                  71.28042293798423,
                  3.621868205185207
                ],
                [
                  -156.74451137037622,
                  71.28061156971411,
                  16.141868205185204
                ],
                [
                  -156.74397857429818,
                  71.27626323044167,
                  16.141868205185204
                ],
                [
                  -156.7574630371491,
                  71.27607464083127,
                  3.621868205185207
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2014.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2014.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:40Z",
            "pc:count": 2883506,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101041.6881,
                "count": 2883506,
                "maximum": -100775.6348,
                "minimum": -101271.4348,
                "name": "X",
                "position": 0,
                "stddev": 132.9118033,
                "variance": 17665.54746
              },
              {
                "average": 2366637.376,
                "count": 2883506,
                "maximum": 2366874.106,
                "minimum": 2366400.346,
                "name": "Y",
                "position": 1,
                "stddev": 132.1880728,
                "variance": 17473.6866
              },
              {
                "average": 8.136730498,
                "count": 2883506,
                "maximum": 16.14186821,
                "minimum": 3.621868205,
                "name": "Z",
                "position": 2,
                "stddev": 2.081864237,
                "variance": 4.334158701
              },
              {
                "average": 46854.76317,
                "count": 2883506,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7901.72249,
                "variance": 62437218.31
              },
              {
                "average": 1.000372463,
                "count": 2883506,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01929571571,
                "variance": 0.0003723246447
              },
              {
                "average": 1.000745967,
                "count": 2883506,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02730221018,
                "variance": 0.0007454106808
              },
              {
                "average": 0.5014253482,
                "count": 2883506,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999980551,
                "variance": 0.2499980551
              },
              {
                "average": 0.0004636716553,
                "count": 2883506,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02152804739,
                "variance": 0.0004634568246
              },
              {
                "average": 1.33506953,
                "count": 2883506,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7855077386,
                "variance": 0.6170224074
              },
              {
                "average": 1.278733413,
                "count": 2883506,
                "maximum": 16.3560009,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59326763,
                "variance": 112.2173191
              },
              {
                "average": 0.5185288326,
                "count": 2883506,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996566511,
                "variance": 0.2496567689
              },
              {
                "average": 410.8340669,
                "count": 2883506,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.962841536,
                "variance": 0.9270638235
              },
              {
                "average": 220417755.4,
                "count": 2883506,
                "maximum": 220419060.5,
                "minimum": 220416835.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 529.0759153,
                "variance": 279921.3242
              },
              {
                "average": 0.5185288326,
                "count": 2883506,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996566511,
                "variance": 0.2496567689
              },
              {
                "average": 0,
                "count": 2883506,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2883506,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2883506,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2732947322,
                "count": 2883506,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4456509738,
                "variance": 0.1986047904
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101271.4348,
              2366400.346,
              3.621868205,
              -100775.6348,
              2366874.106,
              16.14186821
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101271.43475830476,
                    2366400.346395664,
                    3.621868205185207
                  ],
                  [
                    -101271.43475830476,
                    2366874.1063956637,
                    3.621868205185207
                  ],
                  [
                    -100775.63475830478,
                    2366874.1063956637,
                    16.141868205185204
                  ],
                  [
                    -100775.63475830478,
                    2366400.346395664,
                    16.141868205185204
                  ],
                  [
                    -101271.43475830476,
                    2366400.346395664,
                    3.621868205185207
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:40+00:00",
            "end_time": "2018-09-08T04:40:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2081.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7696975985249,
              71.28435256775012,
              -2.702505795698229
            ],
            [
              -156.77023546619895,
              71.28870015619633,
              -2.702505795698229
            ],
            [
              -156.7567440546442,
              71.28888962921873,
              49.35749420430177
            ],
            [
              -156.7562088004226,
              71.28454199845194,
              49.35749420430177
            ],
            [
              -156.7696975985249,
              71.28435256775012,
              -2.702505795698229
            ]
          ]
        ]
      },
      "bbox": [
        -156.7702355,
        71.28435257,
        -2.702505796,
        -156.7562088,
        71.28888963,
        49.3574942
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:05Z",
        "pc:count": 2962955,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101442.6812,
            "count": 2962955,
            "maximum": -101187.1546,
            "minimum": -101682.9346,
            "name": "X",
            "position": 0,
            "stddev": 135.9304318,
            "variance": 18477.08229
          },
          {
            "average": 2367554.336,
            "count": 2962955,
            "maximum": 2367793.036,
            "minimum": 2367319.376,
            "name": "Y",
            "position": 1,
            "stddev": 128.9669327,
            "variance": 16632.46973
          },
          {
            "average": 10.42008306,
            "count": 2962955,
            "maximum": 49.3574942,
            "minimum": -2.702505796,
            "name": "Z",
            "position": 2,
            "stddev": 2.326306453,
            "variance": 5.411701714
          },
          {
            "average": 28162.97016,
            "count": 2962955,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11356.39142,
            "variance": 128967626
          },
          {
            "average": 1.00757082,
            "count": 2962955,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08933046497,
            "variance": 0.007979931973
          },
          {
            "average": 1.015140291,
            "count": 2962955,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1277040389,
            "variance": 0.01630832155
          },
          {
            "average": 0.5014301601,
            "count": 2962955,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998039,
            "variance": 0.249998039
          },
          {
            "average": 0.000395888564,
            "count": 2962955,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01989301309,
            "variance": 0.0003957319698
          },
          {
            "average": 1.472120231,
            "count": 2962955,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9321674218,
            "variance": 0.8689361022
          },
          {
            "average": 1.149149951,
            "count": 2962955,
            "maximum": 16.32600021,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53725637,
            "variance": 111.0337717
          },
          {
            "average": 0.5047221439,
            "count": 2962955,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999777852,
            "variance": 0.2499777857
          },
          {
            "average": 408.1267086,
            "count": 2962955,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9419772145,
            "variance": 0.8873210727
          },
          {
            "average": 220416268.3,
            "count": 2962955,
            "maximum": 220417225.1,
            "minimum": 220414962.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 531.7373095,
            "variance": 282744.5663
          },
          {
            "average": 0.5047221439,
            "count": 2962955,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999777852,
            "variance": 0.2499777857
          },
          {
            "average": 0,
            "count": 2962955,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2962955,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2962955,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2474033524,
            "count": 2962955,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4315031824,
            "variance": 0.1861949965
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101682.9346,
          2367319.376,
          -2.702505796,
          -101187.1546,
          2367793.036,
          49.3574942
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101682.93458901944,
                2367319.376434449,
                -2.702505795698229
              ],
              [
                -101682.93458901944,
                2367793.0364344493,
                -2.702505795698229
              ],
              [
                -101187.15458901944,
                2367793.0364344493,
                49.35749420430177
              ],
              [
                -101187.15458901944,
                2367319.376434449,
                49.35749420430177
              ],
              [
                -101682.93458901944,
                2367319.376434449,
                -2.702505795698229
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:05+00:00",
        "end_time": "2018-09-08T04:09:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2081.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2081.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2081.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2081.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7702355,
            71.28435257,
            -2.702505796,
            -156.7562088,
            71.28888963,
            49.3574942
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7696975985249,
                  71.28435256775012,
                  -2.702505795698229
                ],
                [
                  -156.77023546619895,
                  71.28870015619633,
                  -2.702505795698229
                ],
                [
                  -156.7567440546442,
                  71.28888962921873,
                  49.35749420430177
                ],
                [
                  -156.7562088004226,
                  71.28454199845194,
                  49.35749420430177
                ],
                [
                  -156.7696975985249,
                  71.28435256775012,
                  -2.702505795698229
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2081.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2081.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:05Z",
            "pc:count": 2962955,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101442.6812,
                "count": 2962955,
                "maximum": -101187.1546,
                "minimum": -101682.9346,
                "name": "X",
                "position": 0,
                "stddev": 135.9304318,
                "variance": 18477.08229
              },
              {
                "average": 2367554.336,
                "count": 2962955,
                "maximum": 2367793.036,
                "minimum": 2367319.376,
                "name": "Y",
                "position": 1,
                "stddev": 128.9669327,
                "variance": 16632.46973
              },
              {
                "average": 10.42008306,
                "count": 2962955,
                "maximum": 49.3574942,
                "minimum": -2.702505796,
                "name": "Z",
                "position": 2,
                "stddev": 2.326306453,
                "variance": 5.411701714
              },
              {
                "average": 28162.97016,
                "count": 2962955,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11356.39142,
                "variance": 128967626
              },
              {
                "average": 1.00757082,
                "count": 2962955,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08933046497,
                "variance": 0.007979931973
              },
              {
                "average": 1.015140291,
                "count": 2962955,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1277040389,
                "variance": 0.01630832155
              },
              {
                "average": 0.5014301601,
                "count": 2962955,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998039,
                "variance": 0.249998039
              },
              {
                "average": 0.000395888564,
                "count": 2962955,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01989301309,
                "variance": 0.0003957319698
              },
              {
                "average": 1.472120231,
                "count": 2962955,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9321674218,
                "variance": 0.8689361022
              },
              {
                "average": 1.149149951,
                "count": 2962955,
                "maximum": 16.32600021,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53725637,
                "variance": 111.0337717
              },
              {
                "average": 0.5047221439,
                "count": 2962955,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999777852,
                "variance": 0.2499777857
              },
              {
                "average": 408.1267086,
                "count": 2962955,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9419772145,
                "variance": 0.8873210727
              },
              {
                "average": 220416268.3,
                "count": 2962955,
                "maximum": 220417225.1,
                "minimum": 220414962.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 531.7373095,
                "variance": 282744.5663
              },
              {
                "average": 0.5047221439,
                "count": 2962955,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999777852,
                "variance": 0.2499777857
              },
              {
                "average": 0,
                "count": 2962955,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2962955,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2962955,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2474033524,
                "count": 2962955,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4315031824,
                "variance": 0.1861949965
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101682.9346,
              2367319.376,
              -2.702505796,
              -101187.1546,
              2367793.036,
              49.3574942
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101682.93458901944,
                    2367319.376434449,
                    -2.702505795698229
                  ],
                  [
                    -101682.93458901944,
                    2367793.0364344493,
                    -2.702505795698229
                  ],
                  [
                    -101187.15458901944,
                    2367793.0364344493,
                    49.35749420430177
                  ],
                  [
                    -101187.15458901944,
                    2367319.376434449,
                    49.35749420430177
                  ],
                  [
                    -101682.93458901944,
                    2367319.376434449,
                    -2.702505795698229
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:05+00:00",
            "end_time": "2018-09-08T04:09:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1558.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8998548056364,
              71.2400731536263,
              0.970111966717842
            ],
            [
              -156.9004143778922,
              71.24440018444822,
              0.970111966717842
            ],
            [
              -156.88695615203724,
              71.24459843949897,
              9.850111966717844
            ],
            [
              -156.88639916969632,
              71.2402713647166,
              9.850111966717844
            ],
            [
              -156.8998548056364,
              71.2400731536263,
              0.970111966717842
            ]
          ]
        ]
      },
      "bbox": [
        -156.9004144,
        71.24007315,
        0.9701119667,
        -156.8863992,
        71.24459844,
        9.850111967
      ],
      "properties": {
        "datetime": "2018-09-11T18:41:21Z",
        "pc:count": 3269649,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106431.6403,
            "count": 3269649,
            "maximum": -106173.233,
            "minimum": -106668.813,
            "name": "X",
            "position": 0,
            "stddev": 133.2971798,
            "variance": 17768.13815
          },
          {
            "average": 2362937.02,
            "count": 3269649,
            "maximum": 2363178.802,
            "minimum": 2362707.202,
            "name": "Y",
            "position": 1,
            "stddev": 126.0382762,
            "variance": 15885.64706
          },
          {
            "average": 4.63266844,
            "count": 3269649,
            "maximum": 9.850111967,
            "minimum": 0.9701119667,
            "name": "Z",
            "position": 2,
            "stddev": 2.835087195,
            "variance": 8.037719402
          },
          {
            "average": 32861.5775,
            "count": 3269649,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 16187.14372,
            "variance": 262023621.9
          },
          {
            "average": 1,
            "count": 3269649,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3269649,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4920179506,
            "count": 3269649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999363593,
            "variance": 0.2499363633
          },
          {
            "average": 0.0006061812751,
            "count": 3269649,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02461328919,
            "variance": 0.0006058140047
          },
          {
            "average": 3.368010756,
            "count": 3269649,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.46616614,
            "variance": 12.01430771
          },
          {
            "average": 3.144392838,
            "count": 3269649,
            "maximum": 20.65800095,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.895189258,
            "variance": 97.91477044
          },
          {
            "average": 0.4733872046,
            "count": 3269649,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992913332,
            "variance": 0.2492918354
          },
          {
            "average": 423.5227534,
            "count": 3269649,
            "maximum": 466,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 24.32674886,
            "variance": 591.79071
          },
          {
            "average": 220494703.3,
            "count": 3269649,
            "maximum": 220726481.2,
            "minimum": 220415967.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 134184.3499,
            "variance": 18005439760.0
          },
          {
            "average": 0.4733872046,
            "count": 3269649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992913332,
            "variance": 0.2492918354
          },
          {
            "average": 0,
            "count": 3269649,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3269649,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3269649,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1746637024,
            "count": 3269649,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3796792562,
            "variance": 0.1441563376
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106668.813,
          2362707.202,
          0.9701119667,
          -106173.233,
          2363178.802,
          9.850111967
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106668.81298536214,
                2362707.201591908,
                0.970111966717842
              ],
              [
                -106668.81298536214,
                2363178.8015919076,
                0.970111966717842
              ],
              [
                -106173.23298536215,
                2363178.8015919076,
                9.850111966717844
              ],
              [
                -106173.23298536215,
                2362707.201591908,
                9.850111966717844
              ],
              [
                -106668.81298536214,
                2362707.201591908,
                0.970111966717842
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:41:21+00:00",
        "end_time": "2018-09-08T04:26:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1558.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1558.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1558.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1558.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.9004144,
            71.24007315,
            0.9701119667,
            -156.8863992,
            71.24459844,
            9.850111967
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8998548056364,
                  71.2400731536263,
                  0.970111966717842
                ],
                [
                  -156.9004143778922,
                  71.24440018444822,
                  0.970111966717842
                ],
                [
                  -156.88695615203724,
                  71.24459843949897,
                  9.850111966717844
                ],
                [
                  -156.88639916969632,
                  71.2402713647166,
                  9.850111966717844
                ],
                [
                  -156.8998548056364,
                  71.2400731536263,
                  0.970111966717842
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1558.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1558.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:41:21Z",
            "pc:count": 3269649,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106431.6403,
                "count": 3269649,
                "maximum": -106173.233,
                "minimum": -106668.813,
                "name": "X",
                "position": 0,
                "stddev": 133.2971798,
                "variance": 17768.13815
              },
              {
                "average": 2362937.02,
                "count": 3269649,
                "maximum": 2363178.802,
                "minimum": 2362707.202,
                "name": "Y",
                "position": 1,
                "stddev": 126.0382762,
                "variance": 15885.64706
              },
              {
                "average": 4.63266844,
                "count": 3269649,
                "maximum": 9.850111967,
                "minimum": 0.9701119667,
                "name": "Z",
                "position": 2,
                "stddev": 2.835087195,
                "variance": 8.037719402
              },
              {
                "average": 32861.5775,
                "count": 3269649,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 16187.14372,
                "variance": 262023621.9
              },
              {
                "average": 1,
                "count": 3269649,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3269649,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4920179506,
                "count": 3269649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999363593,
                "variance": 0.2499363633
              },
              {
                "average": 0.0006061812751,
                "count": 3269649,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02461328919,
                "variance": 0.0006058140047
              },
              {
                "average": 3.368010756,
                "count": 3269649,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.46616614,
                "variance": 12.01430771
              },
              {
                "average": 3.144392838,
                "count": 3269649,
                "maximum": 20.65800095,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.895189258,
                "variance": 97.91477044
              },
              {
                "average": 0.4733872046,
                "count": 3269649,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992913332,
                "variance": 0.2492918354
              },
              {
                "average": 423.5227534,
                "count": 3269649,
                "maximum": 466,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 24.32674886,
                "variance": 591.79071
              },
              {
                "average": 220494703.3,
                "count": 3269649,
                "maximum": 220726481.2,
                "minimum": 220415967.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 134184.3499,
                "variance": 18005439760.0
              },
              {
                "average": 0.4733872046,
                "count": 3269649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992913332,
                "variance": 0.2492918354
              },
              {
                "average": 0,
                "count": 3269649,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3269649,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3269649,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1746637024,
                "count": 3269649,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3796792562,
                "variance": 0.1441563376
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106668.813,
              2362707.202,
              0.9701119667,
              -106173.233,
              2363178.802,
              9.850111967
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106668.81298536214,
                    2362707.201591908,
                    0.970111966717842
                  ],
                  [
                    -106668.81298536214,
                    2363178.8015919076,
                    0.970111966717842
                  ],
                  [
                    -106173.23298536215,
                    2363178.8015919076,
                    9.850111966717844
                  ],
                  [
                    -106173.23298536215,
                    2362707.201591908,
                    9.850111966717844
                  ],
                  [
                    -106668.81298536214,
                    2362707.201591908,
                    0.970111966717842
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:41:21+00:00",
            "end_time": "2018-09-08T04:26:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2144.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7691765091654,
              71.29254753435801,
              -4.694245649201672
            ],
            [
              -156.76971435891147,
              71.29689444673696,
              -4.694245649201672
            ],
            [
              -156.75622072831317,
              71.29708385624356,
              16.88575435079833
            ],
            [
              -156.75568549285632,
              71.29273690154476,
              16.88575435079833
            ],
            [
              -156.7691765091654,
              71.29254753435801,
              -4.694245649201672
            ]
          ]
        ]
      },
      "bbox": [
        -156.7697144,
        71.29254753,
        -4.694245649,
        -156.7556855,
        71.29708386,
        16.88575435
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:24Z",
        "pc:count": 1707514,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101384.1802,
            "count": 1707514,
            "maximum": -101130.9502,
            "minimum": -101626.6302,
            "name": "X",
            "position": 0,
            "stddev": 135.124241,
            "variance": 18258.56052
          },
          {
            "average": 2368470.56,
            "count": 1707514,
            "maximum": 2368683.398,
            "minimum": 2368209.838,
            "name": "Y",
            "position": 1,
            "stddev": 135.6342364,
            "variance": 18396.64608
          },
          {
            "average": 3.174890428,
            "count": 1707514,
            "maximum": 16.88575435,
            "minimum": -4.694245649,
            "name": "Z",
            "position": 2,
            "stddev": 1.607302696,
            "variance": 2.583421957
          },
          {
            "average": 22018.99636,
            "count": 1707514,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15868.40429,
            "variance": 251806254.8
          },
          {
            "average": 1.002339659,
            "count": 1707514,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04917844296,
            "variance": 0.002418519252
          },
          {
            "average": 1.004681074,
            "count": 1707514,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07009518857,
            "variance": 0.004913335461
          },
          {
            "average": 0.5064028758,
            "count": 1707514,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999591479,
            "variance": 0.2499591496
          },
          {
            "average": 0.0006793502132,
            "count": 1707514,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02605550027,
            "variance": 0.0006788890941
          },
          {
            "average": 6.848373718,
            "count": 1707514,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.263488858,
            "variance": 10.65035953
          },
          {
            "average": -1.983989382,
            "count": 1707514,
            "maximum": 16.44000053,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.546485947,
            "variance": 56.94945015
          },
          {
            "average": 0.493085269,
            "count": 1707514,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999523306,
            "variance": 0.2499523329
          },
          {
            "average": 406.2970353,
            "count": 1707514,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7271989131,
            "variance": 0.5288182592
          },
          {
            "average": 220415212,
            "count": 1707514,
            "maximum": 220416104,
            "minimum": 220414540,
            "name": "GpsTime",
            "position": 12,
            "stddev": 433.0892059,
            "variance": 187566.2603
          },
          {
            "average": 0.493085269,
            "count": 1707514,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999523306,
            "variance": 0.2499523329
          },
          {
            "average": 0,
            "count": 1707514,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1707514,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1707514,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07943595192,
            "count": 1707514,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2704180547,
            "variance": 0.07312592429
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101626.6302,
          2368209.838,
          -4.694245649,
          -101130.9502,
          2368683.398,
          16.88575435
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101626.6302296252,
                2368209.838428996,
                -4.694245649201672
              ],
              [
                -101626.6302296252,
                2368683.3984289956,
                -4.694245649201672
              ],
              [
                -101130.9502296252,
                2368683.3984289956,
                16.88575435079833
              ],
              [
                -101130.9502296252,
                2368209.838428996,
                16.88575435079833
              ],
              [
                -101626.6302296252,
                2368209.838428996,
                -4.694245649201672
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:24+00:00",
        "end_time": "2018-09-08T04:02:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2144.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2144.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2144.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2144.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7697144,
            71.29254753,
            -4.694245649,
            -156.7556855,
            71.29708386,
            16.88575435
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7691765091654,
                  71.29254753435801,
                  -4.694245649201672
                ],
                [
                  -156.76971435891147,
                  71.29689444673696,
                  -4.694245649201672
                ],
                [
                  -156.75622072831317,
                  71.29708385624356,
                  16.88575435079833
                ],
                [
                  -156.75568549285632,
                  71.29273690154476,
                  16.88575435079833
                ],
                [
                  -156.7691765091654,
                  71.29254753435801,
                  -4.694245649201672
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2144.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2144.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:24Z",
            "pc:count": 1707514,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101384.1802,
                "count": 1707514,
                "maximum": -101130.9502,
                "minimum": -101626.6302,
                "name": "X",
                "position": 0,
                "stddev": 135.124241,
                "variance": 18258.56052
              },
              {
                "average": 2368470.56,
                "count": 1707514,
                "maximum": 2368683.398,
                "minimum": 2368209.838,
                "name": "Y",
                "position": 1,
                "stddev": 135.6342364,
                "variance": 18396.64608
              },
              {
                "average": 3.174890428,
                "count": 1707514,
                "maximum": 16.88575435,
                "minimum": -4.694245649,
                "name": "Z",
                "position": 2,
                "stddev": 1.607302696,
                "variance": 2.583421957
              },
              {
                "average": 22018.99636,
                "count": 1707514,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15868.40429,
                "variance": 251806254.8
              },
              {
                "average": 1.002339659,
                "count": 1707514,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04917844296,
                "variance": 0.002418519252
              },
              {
                "average": 1.004681074,
                "count": 1707514,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07009518857,
                "variance": 0.004913335461
              },
              {
                "average": 0.5064028758,
                "count": 1707514,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999591479,
                "variance": 0.2499591496
              },
              {
                "average": 0.0006793502132,
                "count": 1707514,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02605550027,
                "variance": 0.0006788890941
              },
              {
                "average": 6.848373718,
                "count": 1707514,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.263488858,
                "variance": 10.65035953
              },
              {
                "average": -1.983989382,
                "count": 1707514,
                "maximum": 16.44000053,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.546485947,
                "variance": 56.94945015
              },
              {
                "average": 0.493085269,
                "count": 1707514,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999523306,
                "variance": 0.2499523329
              },
              {
                "average": 406.2970353,
                "count": 1707514,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7271989131,
                "variance": 0.5288182592
              },
              {
                "average": 220415212,
                "count": 1707514,
                "maximum": 220416104,
                "minimum": 220414540,
                "name": "GpsTime",
                "position": 12,
                "stddev": 433.0892059,
                "variance": 187566.2603
              },
              {
                "average": 0.493085269,
                "count": 1707514,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999523306,
                "variance": 0.2499523329
              },
              {
                "average": 0,
                "count": 1707514,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1707514,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1707514,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07943595192,
                "count": 1707514,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2704180547,
                "variance": 0.07312592429
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101626.6302,
              2368209.838,
              -4.694245649,
              -101130.9502,
              2368683.398,
              16.88575435
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101626.6302296252,
                    2368209.838428996,
                    -4.694245649201672
                  ],
                  [
                    -101626.6302296252,
                    2368683.3984289956,
                    -4.694245649201672
                  ],
                  [
                    -101130.9502296252,
                    2368683.3984289956,
                    16.88575435079833
                  ],
                  [
                    -101130.9502296252,
                    2368209.838428996,
                    16.88575435079833
                  ],
                  [
                    -101626.6302296252,
                    2368209.838428996,
                    -4.694245649201672
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:24+00:00",
            "end_time": "2018-09-08T04:02:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1678.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74655833777703,
              71.24731137821992,
              10.954401010907413
            ],
            [
              -156.74709092374712,
              71.25165868173838,
              10.954401010907413
            ],
            [
              -156.73362431008948,
              71.2518464849872,
              27.114401010907415
            ],
            [
              -156.7330943290147,
              71.24749913961328,
              27.114401010907415
            ],
            [
              -156.74655833777703,
              71.24731137821992,
              10.954401010907413
            ]
          ]
        ]
      },
      "bbox": [
        -156.7470909,
        71.24731138,
        10.95440101,
        -156.7330943,
        71.25184648,
        27.11440101
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:26Z",
        "pc:count": 3903707,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100739.038,
            "count": 3903707,
            "maximum": -100504.9662,
            "minimum": -101000.6462,
            "name": "X",
            "position": 0,
            "stddev": 131.5022634,
            "variance": 17292.84527
          },
          {
            "average": 2363474.181,
            "count": 3903707,
            "maximum": 2363728.678,
            "minimum": 2363254.938,
            "name": "Y",
            "position": 1,
            "stddev": 124.9213132,
            "variance": 15605.3345
          },
          {
            "average": 12.23048568,
            "count": 3903707,
            "maximum": 27.11440101,
            "minimum": 10.95440101,
            "name": "Z",
            "position": 2,
            "stddev": 0.8146536547,
            "variance": 0.6636605771
          },
          {
            "average": 39216.10446,
            "count": 3903707,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12000.241,
            "variance": 144005784.1
          },
          {
            "average": 1.000000769,
            "count": 3903707,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008766412642,
            "variance": 7.684999061e-07
          },
          {
            "average": 1.000001537,
            "count": 3903707,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001239757489,
            "variance": 1.536998631e-06
          },
          {
            "average": 0.5043613673,
            "count": 3903707,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999810422,
            "variance": 0.2499810425
          },
          {
            "average": 0.0004864606898,
            "count": 3903707,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02205049139,
            "variance": 0.0004862241704
          },
          {
            "average": 1.353295214,
            "count": 3903707,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.020572485,
            "variance": 1.041568197
          },
          {
            "average": -1.257685684,
            "count": 3903707,
            "maximum": 20.48999977,
            "minimum": -19.84799957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61302895,
            "variance": 112.6363835
          },
          {
            "average": 0.5020120619,
            "count": 3903707,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999960156,
            "variance": 0.2499960156
          },
          {
            "average": 427.3803802,
            "count": 3903707,
            "maximum": 465,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.57342211,
            "variance": 344.9720089
          },
          {
            "average": 220482969.6,
            "count": 3903707,
            "maximum": 220726246.1,
            "minimum": 220420472.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 121928.6963,
            "variance": 14866606980.0
          },
          {
            "average": 0.5020120619,
            "count": 3903707,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999960156,
            "variance": 0.2499960156
          },
          {
            "average": 0,
            "count": 3903707,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3903707,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3903707,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2079103273,
            "count": 3903707,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4058123523,
            "variance": 0.1646836653
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101000.6462,
          2363254.938,
          10.95440101,
          -100504.9662,
          2363728.678,
          27.11440101
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101000.64619383715,
                2363254.9376872834,
                10.954401010907413
              ],
              [
                -101000.64619383715,
                2363728.6776872836,
                10.954401010907413
              ],
              [
                -100504.96619383716,
                2363728.6776872836,
                27.114401010907415
              ],
              [
                -100504.96619383716,
                2363254.9376872834,
                27.114401010907415
              ],
              [
                -101000.64619383715,
                2363254.9376872834,
                10.954401010907413
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:26+00:00",
        "end_time": "2018-09-08T05:41:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1678.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1678.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1678.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1678.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7470909,
            71.24731138,
            10.95440101,
            -156.7330943,
            71.25184648,
            27.11440101
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74655833777703,
                  71.24731137821992,
                  10.954401010907413
                ],
                [
                  -156.74709092374712,
                  71.25165868173838,
                  10.954401010907413
                ],
                [
                  -156.73362431008948,
                  71.2518464849872,
                  27.114401010907415
                ],
                [
                  -156.7330943290147,
                  71.24749913961328,
                  27.114401010907415
                ],
                [
                  -156.74655833777703,
                  71.24731137821992,
                  10.954401010907413
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1678.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1678.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:26Z",
            "pc:count": 3903707,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100739.038,
                "count": 3903707,
                "maximum": -100504.9662,
                "minimum": -101000.6462,
                "name": "X",
                "position": 0,
                "stddev": 131.5022634,
                "variance": 17292.84527
              },
              {
                "average": 2363474.181,
                "count": 3903707,
                "maximum": 2363728.678,
                "minimum": 2363254.938,
                "name": "Y",
                "position": 1,
                "stddev": 124.9213132,
                "variance": 15605.3345
              },
              {
                "average": 12.23048568,
                "count": 3903707,
                "maximum": 27.11440101,
                "minimum": 10.95440101,
                "name": "Z",
                "position": 2,
                "stddev": 0.8146536547,
                "variance": 0.6636605771
              },
              {
                "average": 39216.10446,
                "count": 3903707,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12000.241,
                "variance": 144005784.1
              },
              {
                "average": 1.000000769,
                "count": 3903707,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008766412642,
                "variance": 7.684999061e-07
              },
              {
                "average": 1.000001537,
                "count": 3903707,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001239757489,
                "variance": 1.536998631e-06
              },
              {
                "average": 0.5043613673,
                "count": 3903707,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999810422,
                "variance": 0.2499810425
              },
              {
                "average": 0.0004864606898,
                "count": 3903707,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02205049139,
                "variance": 0.0004862241704
              },
              {
                "average": 1.353295214,
                "count": 3903707,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.020572485,
                "variance": 1.041568197
              },
              {
                "average": -1.257685684,
                "count": 3903707,
                "maximum": 20.48999977,
                "minimum": -19.84799957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61302895,
                "variance": 112.6363835
              },
              {
                "average": 0.5020120619,
                "count": 3903707,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999960156,
                "variance": 0.2499960156
              },
              {
                "average": 427.3803802,
                "count": 3903707,
                "maximum": 465,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.57342211,
                "variance": 344.9720089
              },
              {
                "average": 220482969.6,
                "count": 3903707,
                "maximum": 220726246.1,
                "minimum": 220420472.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 121928.6963,
                "variance": 14866606980.0
              },
              {
                "average": 0.5020120619,
                "count": 3903707,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999960156,
                "variance": 0.2499960156
              },
              {
                "average": 0,
                "count": 3903707,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3903707,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3903707,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2079103273,
                "count": 3903707,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4058123523,
                "variance": 0.1646836653
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101000.6462,
              2363254.938,
              10.95440101,
              -100504.9662,
              2363728.678,
              27.11440101
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101000.64619383715,
                    2363254.9376872834,
                    10.954401010907413
                  ],
                  [
                    -101000.64619383715,
                    2363728.6776872836,
                    10.954401010907413
                  ],
                  [
                    -100504.96619383716,
                    2363728.6776872836,
                    27.114401010907415
                  ],
                  [
                    -100504.96619383716,
                    2363254.9376872834,
                    27.114401010907415
                  ],
                  [
                    -101000.64619383715,
                    2363254.9376872834,
                    10.954401010907413
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:26+00:00",
            "end_time": "2018-09-08T05:41:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1782.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77146358414902,
              71.25567352520075,
              9.694266530046981
            ],
            [
              -156.77200126522087,
              71.26002155518209,
              9.694266530046981
            ],
            [
              -156.7585803893146,
              71.26021036564151,
              13.91426653004698
            ],
            [
              -156.7580453054661,
              71.25586229355297,
              13.91426653004698
            ],
            [
              -156.77146358414902,
              71.25567352520075,
              9.694266530046981
            ]
          ]
        ]
      },
      "bbox": [
        -156.7720013,
        71.25567353,
        9.69426653,
        -156.7580453,
        71.26021037,
        13.91426653
      ],
      "properties": {
        "datetime": "2018-09-08T05:41:20Z",
        "pc:count": 3246300,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101640.3503,
            "count": 3246300,
            "maximum": -101384.1665,
            "minimum": -101877.9865,
            "name": "X",
            "position": 0,
            "stddev": 131.9839856,
            "variance": 17419.77245
          },
          {
            "average": 2364433.844,
            "count": 3246300,
            "maximum": 2364676.453,
            "minimum": 2364202.653,
            "name": "Y",
            "position": 1,
            "stddev": 128.8519961,
            "variance": 16602.83689
          },
          {
            "average": 12.4856818,
            "count": 3246300,
            "maximum": 13.91426653,
            "minimum": 9.69426653,
            "name": "Z",
            "position": 2,
            "stddev": 0.3632660188,
            "variance": 0.1319622004
          },
          {
            "average": 41300.28595,
            "count": 3246300,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11408.41886,
            "variance": 130152020.8
          },
          {
            "average": 1,
            "count": 3246300,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3246300,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5038163448,
            "count": 3246300,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999855123,
            "variance": 0.2499855125
          },
          {
            "average": 0.0004066167637,
            "count": 3246300,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02016064363,
            "variance": 0.0004064515517
          },
          {
            "average": 1.301033484,
            "count": 3246300,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5275486267,
            "variance": 0.2783075535
          },
          {
            "average": 0.8643768598,
            "count": 3246300,
            "maximum": 16.44599915,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.57009808,
            "variance": 111.7269735
          },
          {
            "average": 0.5415716354,
            "count": 3246300,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4982688788,
            "variance": 0.2482718756
          },
          {
            "average": 414.4426852,
            "count": 3246300,
            "maximum": 416,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.97357627,
            "variance": 0.9478507534
          },
          {
            "average": 220419741,
            "count": 3246300,
            "maximum": 220420480,
            "minimum": 220419085.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 516.7270916,
            "variance": 267006.8872
          },
          {
            "average": 0.5415716354,
            "count": 3246300,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4982688788,
            "variance": 0.2482718756
          },
          {
            "average": 0,
            "count": 3246300,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3246300,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3246300,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2515956628,
            "count": 3246300,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4339301133,
            "variance": 0.1882953432
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101877.9865,
          2364202.653,
          9.69426653,
          -101384.1665,
          2364676.453,
          13.91426653
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101877.98646549323,
                2364202.6526903105,
                9.694266530046981
              ],
              [
                -101877.98646549323,
                2364676.4526903103,
                9.694266530046981
              ],
              [
                -101384.16646549322,
                2364676.4526903103,
                13.91426653004698
              ],
              [
                -101384.16646549322,
                2364202.6526903105,
                13.91426653004698
              ],
              [
                -101877.98646549323,
                2364202.6526903105,
                9.694266530046981
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:41:20+00:00",
        "end_time": "2018-09-08T05:18:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1782.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1782.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1782.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1782.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7720013,
            71.25567353,
            9.69426653,
            -156.7580453,
            71.26021037,
            13.91426653
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77146358414902,
                  71.25567352520075,
                  9.694266530046981
                ],
                [
                  -156.77200126522087,
                  71.26002155518209,
                  9.694266530046981
                ],
                [
                  -156.7585803893146,
                  71.26021036564151,
                  13.91426653004698
                ],
                [
                  -156.7580453054661,
                  71.25586229355297,
                  13.91426653004698
                ],
                [
                  -156.77146358414902,
                  71.25567352520075,
                  9.694266530046981
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1782.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1782.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:41:20Z",
            "pc:count": 3246300,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101640.3503,
                "count": 3246300,
                "maximum": -101384.1665,
                "minimum": -101877.9865,
                "name": "X",
                "position": 0,
                "stddev": 131.9839856,
                "variance": 17419.77245
              },
              {
                "average": 2364433.844,
                "count": 3246300,
                "maximum": 2364676.453,
                "minimum": 2364202.653,
                "name": "Y",
                "position": 1,
                "stddev": 128.8519961,
                "variance": 16602.83689
              },
              {
                "average": 12.4856818,
                "count": 3246300,
                "maximum": 13.91426653,
                "minimum": 9.69426653,
                "name": "Z",
                "position": 2,
                "stddev": 0.3632660188,
                "variance": 0.1319622004
              },
              {
                "average": 41300.28595,
                "count": 3246300,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11408.41886,
                "variance": 130152020.8
              },
              {
                "average": 1,
                "count": 3246300,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3246300,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5038163448,
                "count": 3246300,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999855123,
                "variance": 0.2499855125
              },
              {
                "average": 0.0004066167637,
                "count": 3246300,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02016064363,
                "variance": 0.0004064515517
              },
              {
                "average": 1.301033484,
                "count": 3246300,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5275486267,
                "variance": 0.2783075535
              },
              {
                "average": 0.8643768598,
                "count": 3246300,
                "maximum": 16.44599915,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.57009808,
                "variance": 111.7269735
              },
              {
                "average": 0.5415716354,
                "count": 3246300,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4982688788,
                "variance": 0.2482718756
              },
              {
                "average": 414.4426852,
                "count": 3246300,
                "maximum": 416,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.97357627,
                "variance": 0.9478507534
              },
              {
                "average": 220419741,
                "count": 3246300,
                "maximum": 220420480,
                "minimum": 220419085.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 516.7270916,
                "variance": 267006.8872
              },
              {
                "average": 0.5415716354,
                "count": 3246300,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4982688788,
                "variance": 0.2482718756
              },
              {
                "average": 0,
                "count": 3246300,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3246300,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3246300,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2515956628,
                "count": 3246300,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4339301133,
                "variance": 0.1882953432
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101877.9865,
              2364202.653,
              9.69426653,
              -101384.1665,
              2364676.453,
              13.91426653
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101877.98646549323,
                    2364202.6526903105,
                    9.694266530046981
                  ],
                  [
                    -101877.98646549323,
                    2364676.4526903103,
                    9.694266530046981
                  ],
                  [
                    -101384.16646549322,
                    2364676.4526903103,
                    13.91426653004698
                  ],
                  [
                    -101384.16646549322,
                    2364202.6526903105,
                    13.91426653004698
                  ],
                  [
                    -101877.98646549323,
                    2364202.6526903105,
                    9.694266530046981
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:41:20+00:00",
            "end_time": "2018-09-08T05:18:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1940.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71973926622815,
              71.26762492168106,
              9.429092171799699
            ],
            [
              -156.72026697659274,
              71.27197160509914,
              9.429092171799699
            ],
            [
              -156.70678684743726,
              71.2721576109679,
              12.749092171799699
            ],
            [
              -156.706261746304,
              71.26781088605229,
              12.749092171799699
            ],
            [
              -156.71973926622815,
              71.26762492168106,
              9.429092171799699
            ]
          ]
        ]
      },
      "bbox": [
        -156.720267,
        71.26762492,
        9.429092172,
        -156.7062617,
        71.27215761,
        12.74909217
      ],
      "properties": {
        "datetime": "2018-09-11T18:11:03Z",
        "pc:count": 3015026,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99681.34038,
            "count": 3015026,
            "maximum": -99428.7009,
            "minimum": -99924.4209,
            "name": "X",
            "position": 0,
            "stddev": 137.8721828,
            "variance": 19008.73879
          },
          {
            "average": 2365663.559,
            "count": 3015026,
            "maximum": 2365897.717,
            "minimum": 2365424.117,
            "name": "Y",
            "position": 1,
            "stddev": 129.2550327,
            "variance": 16706.86347
          },
          {
            "average": 11.26414647,
            "count": 3015026,
            "maximum": 12.74909217,
            "minimum": 9.429092172,
            "name": "Z",
            "position": 2,
            "stddev": 0.6749642584,
            "variance": 0.4555767501
          },
          {
            "average": 42911.35637,
            "count": 3015026,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11396.52446,
            "variance": 129880769.7
          },
          {
            "average": 1,
            "count": 3015026,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3015026,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5001970132,
            "count": 3015026,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000441,
            "variance": 0.2500000441
          },
          {
            "average": 0.0004202285486,
            "count": 3015026,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0204951725,
            "variance": 0.0004200520959
          },
          {
            "average": 1.326627034,
            "count": 3015026,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.469255359,
            "variance": 0.220200592
          },
          {
            "average": -0.6508911072,
            "count": 3015026,
            "maximum": 16.31399918,
            "minimum": -19.64999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.28379022,
            "variance": 105.7563412
          },
          {
            "average": 0.4758416677,
            "count": 3015026,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994161168,
            "variance": 0.2494164577
          },
          {
            "average": 415.4491918,
            "count": 3015026,
            "maximum": 461,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 3.517484967,
            "variance": 12.37270049
          },
          {
            "average": 220421822.2,
            "count": 3015026,
            "maximum": 220724663,
            "minimum": 220419051.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 22563.09767,
            "variance": 509093376.3
          },
          {
            "average": 0.4758416677,
            "count": 3015026,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994161168,
            "variance": 0.2494164577
          },
          {
            "average": 0,
            "count": 3015026,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3015026,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3015026,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2224723767,
            "count": 3015026,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4159068113,
            "variance": 0.1729784757
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99924.4209,
          2365424.117,
          9.429092172,
          -99428.7009,
          2365897.717,
          12.74909217
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99924.42089618857,
                2365424.1170736123,
                9.429092171799699
              ],
              [
                -99924.42089618857,
                2365897.717073612,
                9.429092171799699
              ],
              [
                -99428.70089618857,
                2365897.717073612,
                12.749092171799699
              ],
              [
                -99428.70089618857,
                2365424.1170736123,
                12.749092171799699
              ],
              [
                -99924.42089618857,
                2365424.1170736123,
                9.429092171799699
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:11:03+00:00",
        "end_time": "2018-09-08T05:17:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1940.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1940.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1940.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1940.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.720267,
            71.26762492,
            9.429092172,
            -156.7062617,
            71.27215761,
            12.74909217
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71973926622815,
                  71.26762492168106,
                  9.429092171799699
                ],
                [
                  -156.72026697659274,
                  71.27197160509914,
                  9.429092171799699
                ],
                [
                  -156.70678684743726,
                  71.2721576109679,
                  12.749092171799699
                ],
                [
                  -156.706261746304,
                  71.26781088605229,
                  12.749092171799699
                ],
                [
                  -156.71973926622815,
                  71.26762492168106,
                  9.429092171799699
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1940.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1940.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:11:03Z",
            "pc:count": 3015026,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99681.34038,
                "count": 3015026,
                "maximum": -99428.7009,
                "minimum": -99924.4209,
                "name": "X",
                "position": 0,
                "stddev": 137.8721828,
                "variance": 19008.73879
              },
              {
                "average": 2365663.559,
                "count": 3015026,
                "maximum": 2365897.717,
                "minimum": 2365424.117,
                "name": "Y",
                "position": 1,
                "stddev": 129.2550327,
                "variance": 16706.86347
              },
              {
                "average": 11.26414647,
                "count": 3015026,
                "maximum": 12.74909217,
                "minimum": 9.429092172,
                "name": "Z",
                "position": 2,
                "stddev": 0.6749642584,
                "variance": 0.4555767501
              },
              {
                "average": 42911.35637,
                "count": 3015026,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11396.52446,
                "variance": 129880769.7
              },
              {
                "average": 1,
                "count": 3015026,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3015026,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5001970132,
                "count": 3015026,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000441,
                "variance": 0.2500000441
              },
              {
                "average": 0.0004202285486,
                "count": 3015026,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0204951725,
                "variance": 0.0004200520959
              },
              {
                "average": 1.326627034,
                "count": 3015026,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.469255359,
                "variance": 0.220200592
              },
              {
                "average": -0.6508911072,
                "count": 3015026,
                "maximum": 16.31399918,
                "minimum": -19.64999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.28379022,
                "variance": 105.7563412
              },
              {
                "average": 0.4758416677,
                "count": 3015026,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994161168,
                "variance": 0.2494164577
              },
              {
                "average": 415.4491918,
                "count": 3015026,
                "maximum": 461,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 3.517484967,
                "variance": 12.37270049
              },
              {
                "average": 220421822.2,
                "count": 3015026,
                "maximum": 220724663,
                "minimum": 220419051.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 22563.09767,
                "variance": 509093376.3
              },
              {
                "average": 0.4758416677,
                "count": 3015026,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994161168,
                "variance": 0.2494164577
              },
              {
                "average": 0,
                "count": 3015026,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3015026,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3015026,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2224723767,
                "count": 3015026,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4159068113,
                "variance": 0.1729784757
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99924.4209,
              2365424.117,
              9.429092172,
              -99428.7009,
              2365897.717,
              12.74909217
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99924.42089618857,
                    2365424.1170736123,
                    9.429092171799699
                  ],
                  [
                    -99924.42089618857,
                    2365897.717073612,
                    9.429092171799699
                  ],
                  [
                    -99428.70089618857,
                    2365897.717073612,
                    12.749092171799699
                  ],
                  [
                    -99428.70089618857,
                    2365424.1170736123,
                    12.749092171799699
                  ],
                  [
                    -99924.42089618857,
                    2365424.1170736123,
                    9.429092171799699
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:11:03+00:00",
            "end_time": "2018-09-08T05:17:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2015.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74470955514306,
              71.27599032410565,
              3.702833001165663
            ],
            [
              -156.74524232906717,
              71.2803373684231,
              3.702833001165663
            ],
            [
              -156.7317573748295,
              71.28052509573234,
              10.842833001165664
            ],
            [
              -156.7312272120341,
              71.27617800950962,
              10.842833001165664
            ],
            [
              -156.74470955514306,
              71.27599032410565,
              3.702833001165663
            ]
          ]
        ]
      },
      "bbox": [
        -156.7452423,
        71.27599032,
        3.702833001,
        -156.7312272,
        71.2805251,
        10.842833
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:37Z",
        "pc:count": 2104213,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100515.8582,
            "count": 2104213,
            "maximum": -100307.973,
            "minimum": -100803.693,
            "name": "X",
            "position": 0,
            "stddev": 138.0228805,
            "variance": 19050.31554
          },
          {
            "average": 2366607.779,
            "count": 2104213,
            "maximum": 2366845.392,
            "minimum": 2366371.772,
            "name": "Y",
            "position": 1,
            "stddev": 128.7668064,
            "variance": 16580.89042
          },
          {
            "average": 6.979392903,
            "count": 2104213,
            "maximum": 10.842833,
            "minimum": 3.702833001,
            "name": "Z",
            "position": 2,
            "stddev": 1.514555609,
            "variance": 2.293878694
          },
          {
            "average": 47669.25275,
            "count": 2104213,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7236.160047,
            "variance": 52362012.23
          },
          {
            "average": 1,
            "count": 2104213,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2104213,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4992298783,
            "count": 2104213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995257,
            "variance": 0.2499995257
          },
          {
            "average": 0.000545572145,
            "count": 2104213,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02335111893,
            "variance": 0.0005452747552
          },
          {
            "average": 1.743474639,
            "count": 2104213,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.891057299,
            "variance": 3.57609771
          },
          {
            "average": -0.01192540093,
            "count": 2104213,
            "maximum": 16.26000023,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.857258927,
            "variance": 97.16555355
          },
          {
            "average": 0.4781326795,
            "count": 2104213,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995217101,
            "variance": 0.2495219389
          },
          {
            "average": 411.9111387,
            "count": 2104213,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8428126193,
            "variance": 0.7103331112
          },
          {
            "average": 220418396.2,
            "count": 2104213,
            "maximum": 220419417.5,
            "minimum": 220417217.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 469.9027794,
            "variance": 220808.6221
          },
          {
            "average": 0.4781326795,
            "count": 2104213,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995217101,
            "variance": 0.2495219389
          },
          {
            "average": 0,
            "count": 2104213,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2104213,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2104213,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1920019504,
            "count": 2104213,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3938746947,
            "variance": 0.1551372752
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100803.693,
          2366371.772,
          3.702833001,
          -100307.973,
          2366845.392,
          10.842833
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100803.69303665026,
                2366371.772386147,
                3.702833001165663
              ],
              [
                -100803.69303665026,
                2366845.3923861473,
                3.702833001165663
              ],
              [
                -100307.97303665026,
                2366845.3923861473,
                10.842833001165664
              ],
              [
                -100307.97303665026,
                2366371.772386147,
                10.842833001165664
              ],
              [
                -100803.69303665026,
                2366371.772386147,
                3.702833001165663
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:37+00:00",
        "end_time": "2018-09-08T04:46:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2015.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2015.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2015.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2015.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7452423,
            71.27599032,
            3.702833001,
            -156.7312272,
            71.2805251,
            10.842833
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74470955514306,
                  71.27599032410565,
                  3.702833001165663
                ],
                [
                  -156.74524232906717,
                  71.2803373684231,
                  3.702833001165663
                ],
                [
                  -156.7317573748295,
                  71.28052509573234,
                  10.842833001165664
                ],
                [
                  -156.7312272120341,
                  71.27617800950962,
                  10.842833001165664
                ],
                [
                  -156.74470955514306,
                  71.27599032410565,
                  3.702833001165663
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2015.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2015.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:37Z",
            "pc:count": 2104213,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100515.8582,
                "count": 2104213,
                "maximum": -100307.973,
                "minimum": -100803.693,
                "name": "X",
                "position": 0,
                "stddev": 138.0228805,
                "variance": 19050.31554
              },
              {
                "average": 2366607.779,
                "count": 2104213,
                "maximum": 2366845.392,
                "minimum": 2366371.772,
                "name": "Y",
                "position": 1,
                "stddev": 128.7668064,
                "variance": 16580.89042
              },
              {
                "average": 6.979392903,
                "count": 2104213,
                "maximum": 10.842833,
                "minimum": 3.702833001,
                "name": "Z",
                "position": 2,
                "stddev": 1.514555609,
                "variance": 2.293878694
              },
              {
                "average": 47669.25275,
                "count": 2104213,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7236.160047,
                "variance": 52362012.23
              },
              {
                "average": 1,
                "count": 2104213,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2104213,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4992298783,
                "count": 2104213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995257,
                "variance": 0.2499995257
              },
              {
                "average": 0.000545572145,
                "count": 2104213,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02335111893,
                "variance": 0.0005452747552
              },
              {
                "average": 1.743474639,
                "count": 2104213,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.891057299,
                "variance": 3.57609771
              },
              {
                "average": -0.01192540093,
                "count": 2104213,
                "maximum": 16.26000023,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.857258927,
                "variance": 97.16555355
              },
              {
                "average": 0.4781326795,
                "count": 2104213,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995217101,
                "variance": 0.2495219389
              },
              {
                "average": 411.9111387,
                "count": 2104213,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8428126193,
                "variance": 0.7103331112
              },
              {
                "average": 220418396.2,
                "count": 2104213,
                "maximum": 220419417.5,
                "minimum": 220417217.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 469.9027794,
                "variance": 220808.6221
              },
              {
                "average": 0.4781326795,
                "count": 2104213,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995217101,
                "variance": 0.2495219389
              },
              {
                "average": 0,
                "count": 2104213,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2104213,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2104213,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1920019504,
                "count": 2104213,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3938746947,
                "variance": 0.1551372752
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100803.693,
              2366371.772,
              3.702833001,
              -100307.973,
              2366845.392,
              10.842833
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100803.69303665026,
                    2366371.772386147,
                    3.702833001165663
                  ],
                  [
                    -100803.69303665026,
                    2366845.3923861473,
                    3.702833001165663
                  ],
                  [
                    -100307.97303665026,
                    2366845.3923861473,
                    10.842833001165664
                  ],
                  [
                    -100307.97303665026,
                    2366371.772386147,
                    10.842833001165664
                  ],
                  [
                    -100803.69303665026,
                    2366371.772386147,
                    3.702833001165663
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:37+00:00",
            "end_time": "2018-09-08T04:46:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1837.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73302442266902,
              71.25951638279852,
              6.196427098894873
            ],
            [
              -156.7335547190371,
              71.26386444571762,
              6.196427098894873
            ],
            [
              -156.7200806613948,
              71.26405133686366,
              84.91642709889487
            ],
            [
              -156.71955297306644,
              71.25970323225577,
              84.91642709889487
            ],
            [
              -156.73302442266902,
              71.25951638279852,
              6.196427098894873
            ]
          ]
        ]
      },
      "bbox": [
        -156.7335547,
        71.25951638,
        6.196427099,
        -156.719553,
        71.26405134,
        84.9164271
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:02Z",
        "pc:count": 3945919,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100206.0293,
            "count": 3945919,
            "maximum": -99952.88723,
            "minimum": -100448.5672,
            "name": "X",
            "position": 0,
            "stddev": 134.6895072,
            "variance": 18141.26335
          },
          {
            "average": 2364788.785,
            "count": 3945919,
            "maximum": 2365035.907,
            "minimum": 2364562.127,
            "name": "Y",
            "position": 1,
            "stddev": 128.6858039,
            "variance": 16560.03613
          },
          {
            "average": 10.04929198,
            "count": 3945919,
            "maximum": 84.9164271,
            "minimum": 6.196427099,
            "name": "Z",
            "position": 2,
            "stddev": 0.7928477034,
            "variance": 0.6286074807
          },
          {
            "average": 45479.91401,
            "count": 3945919,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9069.722955,
            "variance": 82259874.48
          },
          {
            "average": 1.000001014,
            "count": 3945919,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001006829073,
            "variance": 1.013704782e-06
          },
          {
            "average": 1.000002027,
            "count": 3945919,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001423870608,
            "variance": 2.027407508e-06
          },
          {
            "average": 0.5024608969,
            "count": 3945919,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999940073,
            "variance": 0.2499940073
          },
          {
            "average": 0.0004508455445,
            "count": 3945919,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02122833948,
            "variance": 0.000450642397
          },
          {
            "average": 1.25154343,
            "count": 3945919,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4346541551,
            "variance": 0.1889242345
          },
          {
            "average": 0.2018185351,
            "count": 3945919,
            "maximum": 16.44000053,
            "minimum": -19.59000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41324569,
            "variance": 108.4356857
          },
          {
            "average": 0.5092552584,
            "count": 3945919,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999143962,
            "variance": 0.2499144035
          },
          {
            "average": 424.7607323,
            "count": 3945919,
            "maximum": 463,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.0192761,
            "variance": 324.6943112
          },
          {
            "average": 220477757.5,
            "count": 3945919,
            "maximum": 220725442.3,
            "minimum": 220419399.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 118786.6396,
            "variance": 14110265750.0
          },
          {
            "average": 0.5092552584,
            "count": 3945919,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999143962,
            "variance": 0.2499144035
          },
          {
            "average": 0,
            "count": 3945919,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3945919,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3945919,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2307956651,
            "count": 3945919,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4213419882,
            "variance": 0.1775290711
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100448.5672,
          2364562.127,
          6.196427099,
          -99952.88723,
          2365035.907,
          84.9164271
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100448.5672272699,
                2364562.1274674046,
                6.196427098894873
              ],
              [
                -100448.5672272699,
                2365035.907467405,
                6.196427098894873
              ],
              [
                -99952.88722726991,
                2365035.907467405,
                84.91642709889487
              ],
              [
                -99952.88722726991,
                2364562.1274674046,
                84.91642709889487
              ],
              [
                -100448.5672272699,
                2364562.1274674046,
                6.196427098894873
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:02+00:00",
        "end_time": "2018-09-08T05:23:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1837.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1837.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1837.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1837.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7335547,
            71.25951638,
            6.196427099,
            -156.719553,
            71.26405134,
            84.9164271
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73302442266902,
                  71.25951638279852,
                  6.196427098894873
                ],
                [
                  -156.7335547190371,
                  71.26386444571762,
                  6.196427098894873
                ],
                [
                  -156.7200806613948,
                  71.26405133686366,
                  84.91642709889487
                ],
                [
                  -156.71955297306644,
                  71.25970323225577,
                  84.91642709889487
                ],
                [
                  -156.73302442266902,
                  71.25951638279852,
                  6.196427098894873
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1837.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1837.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:02Z",
            "pc:count": 3945919,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100206.0293,
                "count": 3945919,
                "maximum": -99952.88723,
                "minimum": -100448.5672,
                "name": "X",
                "position": 0,
                "stddev": 134.6895072,
                "variance": 18141.26335
              },
              {
                "average": 2364788.785,
                "count": 3945919,
                "maximum": 2365035.907,
                "minimum": 2364562.127,
                "name": "Y",
                "position": 1,
                "stddev": 128.6858039,
                "variance": 16560.03613
              },
              {
                "average": 10.04929198,
                "count": 3945919,
                "maximum": 84.9164271,
                "minimum": 6.196427099,
                "name": "Z",
                "position": 2,
                "stddev": 0.7928477034,
                "variance": 0.6286074807
              },
              {
                "average": 45479.91401,
                "count": 3945919,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9069.722955,
                "variance": 82259874.48
              },
              {
                "average": 1.000001014,
                "count": 3945919,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001006829073,
                "variance": 1.013704782e-06
              },
              {
                "average": 1.000002027,
                "count": 3945919,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001423870608,
                "variance": 2.027407508e-06
              },
              {
                "average": 0.5024608969,
                "count": 3945919,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999940073,
                "variance": 0.2499940073
              },
              {
                "average": 0.0004508455445,
                "count": 3945919,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02122833948,
                "variance": 0.000450642397
              },
              {
                "average": 1.25154343,
                "count": 3945919,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4346541551,
                "variance": 0.1889242345
              },
              {
                "average": 0.2018185351,
                "count": 3945919,
                "maximum": 16.44000053,
                "minimum": -19.59000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41324569,
                "variance": 108.4356857
              },
              {
                "average": 0.5092552584,
                "count": 3945919,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999143962,
                "variance": 0.2499144035
              },
              {
                "average": 424.7607323,
                "count": 3945919,
                "maximum": 463,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.0192761,
                "variance": 324.6943112
              },
              {
                "average": 220477757.5,
                "count": 3945919,
                "maximum": 220725442.3,
                "minimum": 220419399.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 118786.6396,
                "variance": 14110265750.0
              },
              {
                "average": 0.5092552584,
                "count": 3945919,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999143962,
                "variance": 0.2499144035
              },
              {
                "average": 0,
                "count": 3945919,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3945919,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3945919,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2307956651,
                "count": 3945919,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4213419882,
                "variance": 0.1775290711
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100448.5672,
              2364562.127,
              6.196427099,
              -99952.88723,
              2365035.907,
              84.9164271
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100448.5672272699,
                    2364562.1274674046,
                    6.196427098894873
                  ],
                  [
                    -100448.5672272699,
                    2365035.907467405,
                    6.196427098894873
                  ],
                  [
                    -99952.88722726991,
                    2365035.907467405,
                    84.91642709889487
                  ],
                  [
                    -99952.88722726991,
                    2364562.1274674046,
                    84.91642709889487
                  ],
                  [
                    -100448.5672272699,
                    2364562.1274674046,
                    6.196427098894873
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:02+00:00",
            "end_time": "2018-09-08T05:23:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2145.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75641275867997,
              71.29246432108482,
              2.245882950490142
            ],
            [
              -156.75694806095083,
              71.29681071503865,
              2.245882950490142
            ],
            [
              -156.7434543733399,
              71.29699924977054,
              452.34588295049014
            ],
            [
              -156.742921685091,
              71.29265281369752,
              452.34588295049014
            ],
            [
              -156.75641275867997,
              71.29246432108482,
              2.245882950490142
            ]
          ]
        ]
      },
      "bbox": [
        -156.7569481,
        71.29246432,
        2.24588295,
        -156.7429217,
        71.29699925,
        452.345883
      ],
      "properties": {
        "datetime": "2018-09-08T04:40:23Z",
        "pc:count": 1721639,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100913.6904,
            "count": 1721639,
            "maximum": -100663.176,
            "minimum": -101158.856,
            "name": "X",
            "position": 0,
            "stddev": 131.3044283,
            "variance": 17240.85289
          },
          {
            "average": 2368425.99,
            "count": 1721639,
            "maximum": 2368654.802,
            "minimum": 2368181.302,
            "name": "Y",
            "position": 1,
            "stddev": 130.0739247,
            "variance": 16919.22589
          },
          {
            "average": 3.783349214,
            "count": 1721639,
            "maximum": 452.345883,
            "minimum": 2.24588295,
            "name": "Z",
            "position": 2,
            "stddev": 1.039800938,
            "variance": 1.08118599
          },
          {
            "average": 22582.6408,
            "count": 1721639,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13232.40021,
            "variance": 175096415.4
          },
          {
            "average": 1.004984204,
            "count": 1721639,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07070262984,
            "variance": 0.004998861866
          },
          {
            "average": 1.009964923,
            "count": 1721639,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09991475929,
            "variance": 0.009982959125
          },
          {
            "average": 0.4950009845,
            "count": 1721639,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999751544,
            "variance": 0.249975155
          },
          {
            "average": 0.000595943749,
            "count": 1721639,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02440469106,
            "variance": 0.0005955889459
          },
          {
            "average": 6.698886352,
            "count": 1721639,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.379391763,
            "variance": 11.42028869
          },
          {
            "average": 2.411558639,
            "count": 1721639,
            "maximum": 16.31999969,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.252507983,
            "variance": 52.59887205
          },
          {
            "average": 0.485181272,
            "count": 1721639,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997805022,
            "variance": 0.2497805504
          },
          {
            "average": 407.2429348,
            "count": 1721639,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6918720009,
            "variance": 0.4786868656
          },
          {
            "average": 220415748.5,
            "count": 1721639,
            "maximum": 220416823.2,
            "minimum": 220414539.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 376.4992343,
            "variance": 141751.6734
          },
          {
            "average": 0.485181272,
            "count": 1721639,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997805022,
            "variance": 0.2497805504
          },
          {
            "average": 0,
            "count": 1721639,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1721639,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1721639,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0744981962,
            "count": 1721639,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2625799973,
            "variance": 0.06894825501
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101158.856,
          2368181.302,
          2.24588295,
          -100663.176,
          2368654.802,
          452.345883
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101158.85595391944,
                2368181.301624776,
                2.245882950490142
              ],
              [
                -101158.85595391944,
                2368654.801624776,
                2.245882950490142
              ],
              [
                -100663.17595391945,
                2368654.801624776,
                452.34588295049014
              ],
              [
                -100663.17595391945,
                2368181.301624776,
                452.34588295049014
              ],
              [
                -101158.85595391944,
                2368181.301624776,
                2.245882950490142
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:40:23+00:00",
        "end_time": "2018-09-08T04:02:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2145.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2145.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2145.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2145.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7569481,
            71.29246432,
            2.24588295,
            -156.7429217,
            71.29699925,
            452.345883
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75641275867997,
                  71.29246432108482,
                  2.245882950490142
                ],
                [
                  -156.75694806095083,
                  71.29681071503865,
                  2.245882950490142
                ],
                [
                  -156.7434543733399,
                  71.29699924977054,
                  452.34588295049014
                ],
                [
                  -156.742921685091,
                  71.29265281369752,
                  452.34588295049014
                ],
                [
                  -156.75641275867997,
                  71.29246432108482,
                  2.245882950490142
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2145.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2145.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:40:23Z",
            "pc:count": 1721639,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100913.6904,
                "count": 1721639,
                "maximum": -100663.176,
                "minimum": -101158.856,
                "name": "X",
                "position": 0,
                "stddev": 131.3044283,
                "variance": 17240.85289
              },
              {
                "average": 2368425.99,
                "count": 1721639,
                "maximum": 2368654.802,
                "minimum": 2368181.302,
                "name": "Y",
                "position": 1,
                "stddev": 130.0739247,
                "variance": 16919.22589
              },
              {
                "average": 3.783349214,
                "count": 1721639,
                "maximum": 452.345883,
                "minimum": 2.24588295,
                "name": "Z",
                "position": 2,
                "stddev": 1.039800938,
                "variance": 1.08118599
              },
              {
                "average": 22582.6408,
                "count": 1721639,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13232.40021,
                "variance": 175096415.4
              },
              {
                "average": 1.004984204,
                "count": 1721639,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07070262984,
                "variance": 0.004998861866
              },
              {
                "average": 1.009964923,
                "count": 1721639,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09991475929,
                "variance": 0.009982959125
              },
              {
                "average": 0.4950009845,
                "count": 1721639,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999751544,
                "variance": 0.249975155
              },
              {
                "average": 0.000595943749,
                "count": 1721639,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02440469106,
                "variance": 0.0005955889459
              },
              {
                "average": 6.698886352,
                "count": 1721639,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.379391763,
                "variance": 11.42028869
              },
              {
                "average": 2.411558639,
                "count": 1721639,
                "maximum": 16.31999969,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.252507983,
                "variance": 52.59887205
              },
              {
                "average": 0.485181272,
                "count": 1721639,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997805022,
                "variance": 0.2497805504
              },
              {
                "average": 407.2429348,
                "count": 1721639,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6918720009,
                "variance": 0.4786868656
              },
              {
                "average": 220415748.5,
                "count": 1721639,
                "maximum": 220416823.2,
                "minimum": 220414539.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 376.4992343,
                "variance": 141751.6734
              },
              {
                "average": 0.485181272,
                "count": 1721639,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997805022,
                "variance": 0.2497805504
              },
              {
                "average": 0,
                "count": 1721639,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1721639,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1721639,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0744981962,
                "count": 1721639,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2625799973,
                "variance": 0.06894825501
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101158.856,
              2368181.302,
              2.24588295,
              -100663.176,
              2368654.802,
              452.345883
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101158.85595391944,
                    2368181.301624776,
                    2.245882950490142
                  ],
                  [
                    -101158.85595391944,
                    2368654.801624776,
                    2.245882950490142
                  ],
                  [
                    -100663.17595391945,
                    2368654.801624776,
                    452.34588295049014
                  ],
                  [
                    -100663.17595391945,
                    2368181.301624776,
                    452.34588295049014
                  ],
                  [
                    -101158.85595391944,
                    2368181.301624776,
                    2.245882950490142
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:40:23+00:00",
            "end_time": "2018-09-08T04:02:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1719.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.89463223776133,
              71.25243243257356,
              0.88560578554332
            ],
            [
              -156.89515970097534,
              71.25651666889763,
              0.88560578554332
            ],
            [
              -156.886225810509,
              71.2566480788832,
              1.50560578554332
            ],
            [
              -156.88569997083582,
              71.25256381503618,
              1.50560578554332
            ],
            [
              -156.89463223776133,
              71.25243243257356,
              0.88560578554332
            ]
          ]
        ]
      },
      "bbox": [
        -156.8951597,
        71.25243243,
        0.8856057855,
        -156.8857,
        71.25664808,
        1.505605786
      ],
      "properties": {
        "datetime": "2018-09-08T04:42:16Z",
        "pc:count": 505629,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106207.8965,
            "count": 505629,
            "maximum": -106089.3905,
            "minimum": -106418.1905,
            "name": "X",
            "position": 0,
            "stddev": 75.30339855,
            "variance": 5670.601832
          },
          {
            "average": 2364199.319,
            "count": 505629,
            "maximum": 2364488.351,
            "minimum": 2364043.251,
            "name": "Y",
            "position": 1,
            "stddev": 102.6443626,
            "variance": 10535.86517
          },
          {
            "average": 1.180947251,
            "count": 505629,
            "maximum": 1.505605786,
            "minimum": 0.8856057855,
            "name": "Z",
            "position": 2,
            "stddev": 0.06614898631,
            "variance": 0.00437568839
          },
          {
            "average": 15836.12445,
            "count": 505629,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12253.1361,
            "variance": 150139344.4
          },
          {
            "average": 1,
            "count": 505629,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 505629,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4939431876,
            "count": 505629,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999638081,
            "variance": 0.2499638094
          },
          {
            "average": 0.0005616766443,
            "count": 505629,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02369308494,
            "variance": 0.0005613622739
          },
          {
            "average": 7.765941036,
            "count": 505629,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.3374902,
            "variance": 5.463860434
          },
          {
            "average": 2.493416018,
            "count": 505629,
            "maximum": 15.92399979,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.105144736,
            "variance": 50.48308172
          },
          {
            "average": 0.4882057793,
            "count": 505629,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998613713,
            "variance": 0.2498613905
          },
          {
            "average": 407.175251,
            "count": 505629,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6292695447,
            "variance": 0.3959801598
          },
          {
            "average": 220415732.4,
            "count": 505629,
            "maximum": 220416936.4,
            "minimum": 220414859.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 341.8503787,
            "variance": 116861.6814
          },
          {
            "average": 0.4882057793,
            "count": 505629,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998613713,
            "variance": 0.2498613905
          },
          {
            "average": 0,
            "count": 505629,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 505629,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 505629,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03692232843,
            "count": 505629,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1885713139,
            "variance": 0.03555914042
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106418.1905,
          2364043.251,
          0.8856057855,
          -106089.3905,
          2364488.351,
          1.505605786
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106418.19053489961,
                2364043.251243286,
                0.88560578554332
              ],
              [
                -106418.19053489961,
                2364488.3512432855,
                0.88560578554332
              ],
              [
                -106089.39053489962,
                2364488.3512432855,
                1.50560578554332
              ],
              [
                -106089.39053489962,
                2364043.251243286,
                1.50560578554332
              ],
              [
                -106418.19053489961,
                2364043.251243286,
                0.88560578554332
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:42:16+00:00",
        "end_time": "2018-09-08T04:07:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1719.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1719.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1719.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1719.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8951597,
            71.25243243,
            0.8856057855,
            -156.8857,
            71.25664808,
            1.505605786
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.89463223776133,
                  71.25243243257356,
                  0.88560578554332
                ],
                [
                  -156.89515970097534,
                  71.25651666889763,
                  0.88560578554332
                ],
                [
                  -156.886225810509,
                  71.2566480788832,
                  1.50560578554332
                ],
                [
                  -156.88569997083582,
                  71.25256381503618,
                  1.50560578554332
                ],
                [
                  -156.89463223776133,
                  71.25243243257356,
                  0.88560578554332
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1719.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1719.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:42:16Z",
            "pc:count": 505629,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106207.8965,
                "count": 505629,
                "maximum": -106089.3905,
                "minimum": -106418.1905,
                "name": "X",
                "position": 0,
                "stddev": 75.30339855,
                "variance": 5670.601832
              },
              {
                "average": 2364199.319,
                "count": 505629,
                "maximum": 2364488.351,
                "minimum": 2364043.251,
                "name": "Y",
                "position": 1,
                "stddev": 102.6443626,
                "variance": 10535.86517
              },
              {
                "average": 1.180947251,
                "count": 505629,
                "maximum": 1.505605786,
                "minimum": 0.8856057855,
                "name": "Z",
                "position": 2,
                "stddev": 0.06614898631,
                "variance": 0.00437568839
              },
              {
                "average": 15836.12445,
                "count": 505629,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12253.1361,
                "variance": 150139344.4
              },
              {
                "average": 1,
                "count": 505629,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 505629,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4939431876,
                "count": 505629,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999638081,
                "variance": 0.2499638094
              },
              {
                "average": 0.0005616766443,
                "count": 505629,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02369308494,
                "variance": 0.0005613622739
              },
              {
                "average": 7.765941036,
                "count": 505629,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.3374902,
                "variance": 5.463860434
              },
              {
                "average": 2.493416018,
                "count": 505629,
                "maximum": 15.92399979,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.105144736,
                "variance": 50.48308172
              },
              {
                "average": 0.4882057793,
                "count": 505629,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998613713,
                "variance": 0.2498613905
              },
              {
                "average": 407.175251,
                "count": 505629,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6292695447,
                "variance": 0.3959801598
              },
              {
                "average": 220415732.4,
                "count": 505629,
                "maximum": 220416936.4,
                "minimum": 220414859.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 341.8503787,
                "variance": 116861.6814
              },
              {
                "average": 0.4882057793,
                "count": 505629,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998613713,
                "variance": 0.2498613905
              },
              {
                "average": 0,
                "count": 505629,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 505629,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 505629,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03692232843,
                "count": 505629,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1885713139,
                "variance": 0.03555914042
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106418.1905,
              2364043.251,
              0.8856057855,
              -106089.3905,
              2364488.351,
              1.505605786
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106418.19053489961,
                    2364043.251243286,
                    0.88560578554332
                  ],
                  [
                    -106418.19053489961,
                    2364488.3512432855,
                    0.88560578554332
                  ],
                  [
                    -106089.39053489962,
                    2364488.3512432855,
                    1.50560578554332
                  ],
                  [
                    -106089.39053489962,
                    2364043.251243286,
                    1.50560578554332
                  ],
                  [
                    -106418.19053489961,
                    2364043.251243286,
                    0.88560578554332
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:42:16+00:00",
            "end_time": "2018-09-08T04:07:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2082.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75693968290517,
              71.28426879477543,
              -13.420796853419198
            ],
            [
              -156.75747502723047,
              71.28861604838845,
              -13.420796853419198
            ],
            [
              -156.74398192614163,
              71.28880466967804,
              29.039203146580803
            ],
            [
              -156.74344919542818,
              71.28445737393804,
              29.039203146580803
            ],
            [
              -156.75693968290517,
              71.28426879477543,
              -13.420796853419198
            ]
          ]
        ]
      },
      "bbox": [
        -156.757475,
        71.28426879,
        -13.42079685,
        -156.7434492,
        71.28880467,
        29.03920315
      ],
      "properties": {
        "datetime": "2018-09-08T04:59:11Z",
        "pc:count": 2925191,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100964.47,
            "count": 2925191,
            "maximum": -100719.3659,
            "minimum": -101215.2059,
            "name": "X",
            "position": 0,
            "stddev": 136.2435132,
            "variance": 18562.29489
          },
          {
            "average": 2367529.046,
            "count": 2925191,
            "maximum": 2367764.396,
            "minimum": 2367290.776,
            "name": "Y",
            "position": 1,
            "stddev": 128.3092017,
            "variance": 16463.25123
          },
          {
            "average": 9.556080448,
            "count": 2925191,
            "maximum": 29.03920315,
            "minimum": -13.42079685,
            "name": "Z",
            "position": 2,
            "stddev": 2.403235684,
            "variance": 5.775541755
          },
          {
            "average": 34928.5984,
            "count": 2925191,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14313.6166,
            "variance": 204879620.1
          },
          {
            "average": 1.004346041,
            "count": 2925191,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06852002448,
            "variance": 0.004694993755
          },
          {
            "average": 1.008663024,
            "count": 2925191,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09843151021,
            "variance": 0.009688762203
          },
          {
            "average": 0.5005697064,
            "count": 2925191,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997609,
            "variance": 0.2499997609
          },
          {
            "average": 0.0004115970547,
            "count": 2925191,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02028368268,
            "variance": 0.0004114277832
          },
          {
            "average": 1.41384648,
            "count": 2925191,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7977555715,
            "variance": 0.6364139518
          },
          {
            "average": 0.04736910442,
            "count": 2925191,
            "maximum": 16.32600021,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51489572,
            "variance": 110.5630321
          },
          {
            "average": 0.4789266752,
            "count": 2925191,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499555803,
            "variance": 0.2495560003
          },
          {
            "average": 409.0499889,
            "count": 2925191,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9468491947,
            "variance": 0.8965233975
          },
          {
            "average": 220416743.9,
            "count": 2925191,
            "maximum": 220417951.5,
            "minimum": 220415677.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 543.2465821,
            "variance": 295116.8489
          },
          {
            "average": 0.4789266752,
            "count": 2925191,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499555803,
            "variance": 0.2495560003
          },
          {
            "average": 0,
            "count": 2925191,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2925191,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2925191,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2158293253,
            "count": 2925191,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4113965064,
            "variance": 0.1692470855
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101215.2059,
          2367290.776,
          -13.42079685,
          -100719.3659,
          2367764.396,
          29.03920315
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101215.20588354388,
                2367290.7763471394,
                -13.420796853419198
              ],
              [
                -101215.20588354388,
                2367764.3963471395,
                -13.420796853419198
              ],
              [
                -100719.36588354388,
                2367764.3963471395,
                29.039203146580803
              ],
              [
                -100719.36588354388,
                2367290.7763471394,
                29.039203146580803
              ],
              [
                -101215.20588354388,
                2367290.7763471394,
                -13.420796853419198
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:59:11+00:00",
        "end_time": "2018-09-08T04:21:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2082.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2082.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2082.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2082.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.757475,
            71.28426879,
            -13.42079685,
            -156.7434492,
            71.28880467,
            29.03920315
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75693968290517,
                  71.28426879477543,
                  -13.420796853419198
                ],
                [
                  -156.75747502723047,
                  71.28861604838845,
                  -13.420796853419198
                ],
                [
                  -156.74398192614163,
                  71.28880466967804,
                  29.039203146580803
                ],
                [
                  -156.74344919542818,
                  71.28445737393804,
                  29.039203146580803
                ],
                [
                  -156.75693968290517,
                  71.28426879477543,
                  -13.420796853419198
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2082.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2082.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:59:11Z",
            "pc:count": 2925191,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100964.47,
                "count": 2925191,
                "maximum": -100719.3659,
                "minimum": -101215.2059,
                "name": "X",
                "position": 0,
                "stddev": 136.2435132,
                "variance": 18562.29489
              },
              {
                "average": 2367529.046,
                "count": 2925191,
                "maximum": 2367764.396,
                "minimum": 2367290.776,
                "name": "Y",
                "position": 1,
                "stddev": 128.3092017,
                "variance": 16463.25123
              },
              {
                "average": 9.556080448,
                "count": 2925191,
                "maximum": 29.03920315,
                "minimum": -13.42079685,
                "name": "Z",
                "position": 2,
                "stddev": 2.403235684,
                "variance": 5.775541755
              },
              {
                "average": 34928.5984,
                "count": 2925191,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14313.6166,
                "variance": 204879620.1
              },
              {
                "average": 1.004346041,
                "count": 2925191,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06852002448,
                "variance": 0.004694993755
              },
              {
                "average": 1.008663024,
                "count": 2925191,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09843151021,
                "variance": 0.009688762203
              },
              {
                "average": 0.5005697064,
                "count": 2925191,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997609,
                "variance": 0.2499997609
              },
              {
                "average": 0.0004115970547,
                "count": 2925191,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02028368268,
                "variance": 0.0004114277832
              },
              {
                "average": 1.41384648,
                "count": 2925191,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7977555715,
                "variance": 0.6364139518
              },
              {
                "average": 0.04736910442,
                "count": 2925191,
                "maximum": 16.32600021,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51489572,
                "variance": 110.5630321
              },
              {
                "average": 0.4789266752,
                "count": 2925191,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499555803,
                "variance": 0.2495560003
              },
              {
                "average": 409.0499889,
                "count": 2925191,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9468491947,
                "variance": 0.8965233975
              },
              {
                "average": 220416743.9,
                "count": 2925191,
                "maximum": 220417951.5,
                "minimum": 220415677.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 543.2465821,
                "variance": 295116.8489
              },
              {
                "average": 0.4789266752,
                "count": 2925191,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499555803,
                "variance": 0.2495560003
              },
              {
                "average": 0,
                "count": 2925191,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2925191,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2925191,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2158293253,
                "count": 2925191,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4113965064,
                "variance": 0.1692470855
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101215.2059,
              2367290.776,
              -13.42079685,
              -100719.3659,
              2367764.396,
              29.03920315
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101215.20588354388,
                    2367290.7763471394,
                    -13.420796853419198
                  ],
                  [
                    -101215.20588354388,
                    2367764.3963471395,
                    -13.420796853419198
                  ],
                  [
                    -100719.36588354388,
                    2367764.3963471395,
                    29.039203146580803
                  ],
                  [
                    -100719.36588354388,
                    2367290.7763471394,
                    29.039203146580803
                  ],
                  [
                    -101215.20588354388,
                    2367290.7763471394,
                    -13.420796853419198
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:59:11+00:00",
            "end_time": "2018-09-08T04:21:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1670.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84844466830444,
              71.2479623796299,
              1.941453297927143
            ],
            [
              -156.84899689859193,
              71.25230850332191,
              1.941453297927143
            ],
            [
              -156.83562530372893,
              71.25250192281472,
              11.441453297927143
            ],
            [
              -156.83507565898444,
              71.24815575602564,
              11.441453297927143
            ],
            [
              -156.84844466830444,
              71.2479623796299,
              1.941453297927143
            ]
          ]
        ]
      },
      "bbox": [
        -156.8489969,
        71.24796238,
        1.941453298,
        -156.8350757,
        71.25250192,
        11.4414533
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:18Z",
        "pc:count": 2459405,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104503.1626,
            "count": 2459405,
            "maximum": -104249.8703,
            "minimum": -104742.0703,
            "name": "X",
            "position": 0,
            "stddev": 138.1625668,
            "variance": 19088.89485
          },
          {
            "average": 2363667.037,
            "count": 2459405,
            "maximum": 2363957.22,
            "minimum": 2363483.58,
            "name": "Y",
            "position": 1,
            "stddev": 118.8671348,
            "variance": 14129.39574
          },
          {
            "average": 7.99315033,
            "count": 2459405,
            "maximum": 11.4414533,
            "minimum": 1.941453298,
            "name": "Z",
            "position": 2,
            "stddev": 2.560527429,
            "variance": 6.556300714
          },
          {
            "average": 48116.07198,
            "count": 2459405,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8692.231558,
            "variance": 75554889.45
          },
          {
            "average": 1,
            "count": 2459405,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2459405,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.501529435,
            "count": 2459405,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999977625,
            "variance": 0.2499977625
          },
          {
            "average": 0.0005578585064,
            "count": 2459405,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02361244433,
            "variance": 0.000557547527
          },
          {
            "average": 1.393353677,
            "count": 2459405,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.146100535,
            "variance": 1.313546436
          },
          {
            "average": -1.46698692,
            "count": 2459405,
            "maximum": 16.37999916,
            "minimum": -19.74600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.8310795,
            "variance": 117.3122832
          },
          {
            "average": 0.4822581071,
            "count": 2459405,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996852277,
            "variance": 0.2496853268
          },
          {
            "average": 416.6643835,
            "count": 2459405,
            "maximum": 465,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.22322728,
            "variance": 263.1931035
          },
          {
            "average": 220449105.3,
            "count": 2459405,
            "maximum": 220726298.6,
            "minimum": 220416916.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 92904.4097,
            "variance": 8631229342
          },
          {
            "average": 0.4822581071,
            "count": 2459405,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996852277,
            "variance": 0.2496853268
          },
          {
            "average": 0,
            "count": 2459405,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2459405,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2459405,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.230905036,
            "count": 2459405,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4214118799,
            "variance": 0.1775879725
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104742.0703,
          2363483.58,
          1.941453298,
          -104249.8703,
          2363957.22,
          11.4414533
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104742.07027769831,
                2363483.579735612,
                1.941453297927143
              ],
              [
                -104742.07027769831,
                2363957.2197356117,
                1.941453297927143
              ],
              [
                -104249.8702776983,
                2363957.2197356117,
                11.441453297927143
              ],
              [
                -104249.8702776983,
                2363483.579735612,
                11.441453297927143
              ],
              [
                -104742.07027769831,
                2363483.579735612,
                1.941453297927143
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:18+00:00",
        "end_time": "2018-09-08T04:41:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1670.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1670.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1670.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1670.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8489969,
            71.24796238,
            1.941453298,
            -156.8350757,
            71.25250192,
            11.4414533
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84844466830444,
                  71.2479623796299,
                  1.941453297927143
                ],
                [
                  -156.84899689859193,
                  71.25230850332191,
                  1.941453297927143
                ],
                [
                  -156.83562530372893,
                  71.25250192281472,
                  11.441453297927143
                ],
                [
                  -156.83507565898444,
                  71.24815575602564,
                  11.441453297927143
                ],
                [
                  -156.84844466830444,
                  71.2479623796299,
                  1.941453297927143
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1670.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1670.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:18Z",
            "pc:count": 2459405,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104503.1626,
                "count": 2459405,
                "maximum": -104249.8703,
                "minimum": -104742.0703,
                "name": "X",
                "position": 0,
                "stddev": 138.1625668,
                "variance": 19088.89485
              },
              {
                "average": 2363667.037,
                "count": 2459405,
                "maximum": 2363957.22,
                "minimum": 2363483.58,
                "name": "Y",
                "position": 1,
                "stddev": 118.8671348,
                "variance": 14129.39574
              },
              {
                "average": 7.99315033,
                "count": 2459405,
                "maximum": 11.4414533,
                "minimum": 1.941453298,
                "name": "Z",
                "position": 2,
                "stddev": 2.560527429,
                "variance": 6.556300714
              },
              {
                "average": 48116.07198,
                "count": 2459405,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8692.231558,
                "variance": 75554889.45
              },
              {
                "average": 1,
                "count": 2459405,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2459405,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.501529435,
                "count": 2459405,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999977625,
                "variance": 0.2499977625
              },
              {
                "average": 0.0005578585064,
                "count": 2459405,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02361244433,
                "variance": 0.000557547527
              },
              {
                "average": 1.393353677,
                "count": 2459405,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.146100535,
                "variance": 1.313546436
              },
              {
                "average": -1.46698692,
                "count": 2459405,
                "maximum": 16.37999916,
                "minimum": -19.74600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.8310795,
                "variance": 117.3122832
              },
              {
                "average": 0.4822581071,
                "count": 2459405,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996852277,
                "variance": 0.2496853268
              },
              {
                "average": 416.6643835,
                "count": 2459405,
                "maximum": 465,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.22322728,
                "variance": 263.1931035
              },
              {
                "average": 220449105.3,
                "count": 2459405,
                "maximum": 220726298.6,
                "minimum": 220416916.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 92904.4097,
                "variance": 8631229342
              },
              {
                "average": 0.4822581071,
                "count": 2459405,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996852277,
                "variance": 0.2496853268
              },
              {
                "average": 0,
                "count": 2459405,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2459405,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2459405,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.230905036,
                "count": 2459405,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4214118799,
                "variance": 0.1775879725
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104742.0703,
              2363483.58,
              1.941453298,
              -104249.8703,
              2363957.22,
              11.4414533
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104742.07027769831,
                    2363483.579735612,
                    1.941453297927143
                  ],
                  [
                    -104742.07027769831,
                    2363957.2197356117,
                    1.941453297927143
                  ],
                  [
                    -104249.8702776983,
                    2363957.2197356117,
                    11.441453297927143
                  ],
                  [
                    -104249.8702776983,
                    2363483.579735612,
                    11.441453297927143
                  ],
                  [
                    -104742.07027769831,
                    2363483.579735612,
                    1.941453297927143
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:18+00:00",
            "end_time": "2018-09-08T04:41:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1783.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75877226253874,
              71.25558923598703,
              11.11121173031802
            ],
            [
              -156.75930734524272,
              71.25993619687851,
              11.11121173031802
            ],
            [
              -156.7458336887119,
              71.26012487754465,
              40.011211730318024
            ],
            [
              -156.7453012128377,
              71.25577787458545,
              40.011211730318024
            ],
            [
              -156.75877226253874,
              71.25558923598703,
              11.11121173031802
            ]
          ]
        ]
      },
      "bbox": [
        -156.7593073,
        71.25558924,
        11.11121173,
        -156.7453012,
        71.26012488,
        40.01121173
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:09Z",
        "pc:count": 2886997,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101165.3535,
            "count": 2886997,
            "maximum": -100916.3482,
            "minimum": -101412.1082,
            "name": "X",
            "position": 0,
            "stddev": 136.4422573,
            "variance": 18616.48957
          },
          {
            "average": 2364410.536,
            "count": 2886997,
            "maximum": 2364647.739,
            "minimum": 2364174.059,
            "name": "Y",
            "position": 1,
            "stddev": 131.2703682,
            "variance": 17231.90958
          },
          {
            "average": 12.41020337,
            "count": 2886997,
            "maximum": 40.01121173,
            "minimum": 11.11121173,
            "name": "Z",
            "position": 2,
            "stddev": 0.8383545314,
            "variance": 0.7028383204
          },
          {
            "average": 43161.0849,
            "count": 2886997,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12573.59951,
            "variance": 158095404.6
          },
          {
            "average": 1.000001039,
            "count": 2886997,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001019382821,
            "variance": 1.039141337e-06
          },
          {
            "average": 1.000002078,
            "count": 2886997,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001441624262,
            "variance": 2.078280514e-06
          },
          {
            "average": 0.4996264284,
            "count": 2886997,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999947,
            "variance": 0.249999947
          },
          {
            "average": 0.000452719556,
            "count": 2886997,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02127239426,
            "variance": 0.0004525147577
          },
          {
            "average": 1.443552938,
            "count": 2886997,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.101706544,
            "variance": 1.213757309
          },
          {
            "average": -0.7367104939,
            "count": 2886997,
            "maximum": 16.32600021,
            "minimum": -18.05999947,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.29390776,
            "variance": 105.9645369
          },
          {
            "average": 0.4613870399,
            "count": 2886997,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498506896,
            "variance": 0.2485091254
          },
          {
            "average": 416.0265009,
            "count": 2886997,
            "maximum": 463,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 5.761654091,
            "variance": 33.19665787
          },
          {
            "average": 220424627.6,
            "count": 2886997,
            "maximum": 220725449.5,
            "minimum": 220419377.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 36404.58443,
            "variance": 1325293767
          },
          {
            "average": 0.4613870399,
            "count": 2886997,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498506896,
            "variance": 0.2485091254
          },
          {
            "average": 0,
            "count": 2886997,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2886997,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2886997,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2229063626,
            "count": 2886997,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4161960789,
            "variance": 0.1732191761
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101412.1082,
          2364174.059,
          11.11121173,
          -100916.3482,
          2364647.739,
          40.01121173
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101412.10824554478,
                2364174.0589763047,
                11.11121173031802
              ],
              [
                -101412.10824554478,
                2364647.7389763044,
                11.11121173031802
              ],
              [
                -100916.34824554477,
                2364647.7389763044,
                40.011211730318024
              ],
              [
                -100916.34824554477,
                2364174.0589763047,
                40.011211730318024
              ],
              [
                -101412.10824554478,
                2364174.0589763047,
                11.11121173031802
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:09+00:00",
        "end_time": "2018-09-08T05:22:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1783.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1783.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1783.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1783.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7593073,
            71.25558924,
            11.11121173,
            -156.7453012,
            71.26012488,
            40.01121173
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75877226253874,
                  71.25558923598703,
                  11.11121173031802
                ],
                [
                  -156.75930734524272,
                  71.25993619687851,
                  11.11121173031802
                ],
                [
                  -156.7458336887119,
                  71.26012487754465,
                  40.011211730318024
                ],
                [
                  -156.7453012128377,
                  71.25577787458545,
                  40.011211730318024
                ],
                [
                  -156.75877226253874,
                  71.25558923598703,
                  11.11121173031802
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1783.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1783.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:09Z",
            "pc:count": 2886997,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101165.3535,
                "count": 2886997,
                "maximum": -100916.3482,
                "minimum": -101412.1082,
                "name": "X",
                "position": 0,
                "stddev": 136.4422573,
                "variance": 18616.48957
              },
              {
                "average": 2364410.536,
                "count": 2886997,
                "maximum": 2364647.739,
                "minimum": 2364174.059,
                "name": "Y",
                "position": 1,
                "stddev": 131.2703682,
                "variance": 17231.90958
              },
              {
                "average": 12.41020337,
                "count": 2886997,
                "maximum": 40.01121173,
                "minimum": 11.11121173,
                "name": "Z",
                "position": 2,
                "stddev": 0.8383545314,
                "variance": 0.7028383204
              },
              {
                "average": 43161.0849,
                "count": 2886997,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12573.59951,
                "variance": 158095404.6
              },
              {
                "average": 1.000001039,
                "count": 2886997,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001019382821,
                "variance": 1.039141337e-06
              },
              {
                "average": 1.000002078,
                "count": 2886997,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001441624262,
                "variance": 2.078280514e-06
              },
              {
                "average": 0.4996264284,
                "count": 2886997,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999947,
                "variance": 0.249999947
              },
              {
                "average": 0.000452719556,
                "count": 2886997,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02127239426,
                "variance": 0.0004525147577
              },
              {
                "average": 1.443552938,
                "count": 2886997,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.101706544,
                "variance": 1.213757309
              },
              {
                "average": -0.7367104939,
                "count": 2886997,
                "maximum": 16.32600021,
                "minimum": -18.05999947,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.29390776,
                "variance": 105.9645369
              },
              {
                "average": 0.4613870399,
                "count": 2886997,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498506896,
                "variance": 0.2485091254
              },
              {
                "average": 416.0265009,
                "count": 2886997,
                "maximum": 463,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 5.761654091,
                "variance": 33.19665787
              },
              {
                "average": 220424627.6,
                "count": 2886997,
                "maximum": 220725449.5,
                "minimum": 220419377.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 36404.58443,
                "variance": 1325293767
              },
              {
                "average": 0.4613870399,
                "count": 2886997,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498506896,
                "variance": 0.2485091254
              },
              {
                "average": 0,
                "count": 2886997,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2886997,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2886997,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2229063626,
                "count": 2886997,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4161960789,
                "variance": 0.1732191761
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101412.1082,
              2364174.059,
              11.11121173,
              -100916.3482,
              2364647.739,
              40.01121173
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101412.10824554478,
                    2364174.0589763047,
                    11.11121173031802
                  ],
                  [
                    -101412.10824554478,
                    2364647.7389763044,
                    11.11121173031802
                  ],
                  [
                    -100916.34824554477,
                    2364647.7389763044,
                    40.011211730318024
                  ],
                  [
                    -100916.34824554477,
                    2364174.0589763047,
                    40.011211730318024
                  ],
                  [
                    -101412.10824554478,
                    2364174.0589763047,
                    11.11121173031802
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:09+00:00",
            "end_time": "2018-09-08T05:22:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2044.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82098665094847,
              71.28058230529052,
              0.881420440900737
            ],
            [
              -156.82153414936332,
              71.28492780614738,
              0.881420440900737
            ],
            [
              -156.80804653454803,
              71.28512077392472,
              14.441420440900737
            ],
            [
              -156.8075016470529,
              71.28077522999669,
              14.441420440900737
            ],
            [
              -156.82098665094847,
              71.28058230529052,
              0.881420440900737
            ]
          ]
        ]
      },
      "bbox": [
        -156.8215341,
        71.28058231,
        0.8814204409,
        -156.8075016,
        71.28512077,
        14.44142044
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:58Z",
        "pc:count": 2540515,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103309.7361,
            "count": 2540515,
            "maximum": -103086.4575,
            "minimum": -103582.1975,
            "name": "X",
            "position": 0,
            "stddev": 130.6948136,
            "variance": 17081.13429
          },
          {
            "average": 2367211.648,
            "count": 2540515,
            "maximum": 2367462.047,
            "minimum": 2366988.587,
            "name": "Y",
            "position": 1,
            "stddev": 125.3180594,
            "variance": 15704.61602
          },
          {
            "average": 3.263113456,
            "count": 2540515,
            "maximum": 14.44142044,
            "minimum": 0.8814204409,
            "name": "Z",
            "position": 2,
            "stddev": 1.790321474,
            "variance": 3.205250981
          },
          {
            "average": 19385.41993,
            "count": 2540515,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8165.919713,
            "variance": 66682244.76
          },
          {
            "average": 1.000825423,
            "count": 2540515,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02873202804,
            "variance": 0.0008255294352
          },
          {
            "average": 1.001650059,
            "count": 2540515,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0406164846,
            "variance": 0.001649698822
          },
          {
            "average": 0.4964229694,
            "count": 2540515,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999873031,
            "variance": 0.2499873033
          },
          {
            "average": 0.0004329830763,
            "count": 2540515,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02080374419,
            "variance": 0.0004327957723
          },
          {
            "average": 3.149231553,
            "count": 2540515,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.200590883,
            "variance": 10.243782
          },
          {
            "average": 1.259226079,
            "count": 2540515,
            "maximum": 16.3920002,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.603205978,
            "variance": 92.22156505
          },
          {
            "average": 0.4813224878,
            "count": 2540515,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996511271,
            "variance": 0.2496512488
          },
          {
            "average": 405.7981142,
            "count": 2540515,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8185481612,
            "variance": 0.6700210922
          },
          {
            "average": 220414957.8,
            "count": 2540515,
            "maximum": 220415718.8,
            "minimum": 220413801.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 463.8262806,
            "variance": 215134.8186
          },
          {
            "average": 0.4813224878,
            "count": 2540515,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996511271,
            "variance": 0.2496512488
          },
          {
            "average": 0,
            "count": 2540515,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2540515,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2540515,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1733554023,
            "count": 2540515,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3785543068,
            "variance": 0.1433033632
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103582.1975,
          2366988.587,
          0.8814204409,
          -103086.4575,
          2367462.047,
          14.44142044
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103582.19746468923,
                2366988.5871194242,
                0.881420440900737
              ],
              [
                -103582.19746468923,
                2367462.047119424,
                0.881420440900737
              ],
              [
                -103086.45746468924,
                2367462.047119424,
                14.441420440900737
              ],
              [
                -103086.45746468924,
                2366988.5871194242,
                14.441420440900737
              ],
              [
                -103582.19746468923,
                2366988.5871194242,
                0.881420440900737
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:58+00:00",
        "end_time": "2018-09-08T03:50:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2044.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2044.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2044.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2044.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8215341,
            71.28058231,
            0.8814204409,
            -156.8075016,
            71.28512077,
            14.44142044
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82098665094847,
                  71.28058230529052,
                  0.881420440900737
                ],
                [
                  -156.82153414936332,
                  71.28492780614738,
                  0.881420440900737
                ],
                [
                  -156.80804653454803,
                  71.28512077392472,
                  14.441420440900737
                ],
                [
                  -156.8075016470529,
                  71.28077522999669,
                  14.441420440900737
                ],
                [
                  -156.82098665094847,
                  71.28058230529052,
                  0.881420440900737
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2044.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2044.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:58Z",
            "pc:count": 2540515,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103309.7361,
                "count": 2540515,
                "maximum": -103086.4575,
                "minimum": -103582.1975,
                "name": "X",
                "position": 0,
                "stddev": 130.6948136,
                "variance": 17081.13429
              },
              {
                "average": 2367211.648,
                "count": 2540515,
                "maximum": 2367462.047,
                "minimum": 2366988.587,
                "name": "Y",
                "position": 1,
                "stddev": 125.3180594,
                "variance": 15704.61602
              },
              {
                "average": 3.263113456,
                "count": 2540515,
                "maximum": 14.44142044,
                "minimum": 0.8814204409,
                "name": "Z",
                "position": 2,
                "stddev": 1.790321474,
                "variance": 3.205250981
              },
              {
                "average": 19385.41993,
                "count": 2540515,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8165.919713,
                "variance": 66682244.76
              },
              {
                "average": 1.000825423,
                "count": 2540515,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02873202804,
                "variance": 0.0008255294352
              },
              {
                "average": 1.001650059,
                "count": 2540515,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0406164846,
                "variance": 0.001649698822
              },
              {
                "average": 0.4964229694,
                "count": 2540515,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999873031,
                "variance": 0.2499873033
              },
              {
                "average": 0.0004329830763,
                "count": 2540515,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02080374419,
                "variance": 0.0004327957723
              },
              {
                "average": 3.149231553,
                "count": 2540515,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.200590883,
                "variance": 10.243782
              },
              {
                "average": 1.259226079,
                "count": 2540515,
                "maximum": 16.3920002,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.603205978,
                "variance": 92.22156505
              },
              {
                "average": 0.4813224878,
                "count": 2540515,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996511271,
                "variance": 0.2496512488
              },
              {
                "average": 405.7981142,
                "count": 2540515,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8185481612,
                "variance": 0.6700210922
              },
              {
                "average": 220414957.8,
                "count": 2540515,
                "maximum": 220415718.8,
                "minimum": 220413801.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 463.8262806,
                "variance": 215134.8186
              },
              {
                "average": 0.4813224878,
                "count": 2540515,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996511271,
                "variance": 0.2496512488
              },
              {
                "average": 0,
                "count": 2540515,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2540515,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2540515,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1733554023,
                "count": 2540515,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3785543068,
                "variance": 0.1433033632
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103582.1975,
              2366988.587,
              0.8814204409,
              -103086.4575,
              2367462.047,
              14.44142044
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103582.19746468923,
                    2366988.5871194242,
                    0.881420440900737
                  ],
                  [
                    -103582.19746468923,
                    2367462.047119424,
                    0.881420440900737
                  ],
                  [
                    -103086.45746468924,
                    2367462.047119424,
                    14.441420440900737
                  ],
                  [
                    -103086.45746468924,
                    2366988.5871194242,
                    14.441420440900737
                  ],
                  [
                    -103582.19746468923,
                    2366988.5871194242,
                    0.881420440900737
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:58+00:00",
            "end_time": "2018-09-08T03:50:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1720.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.88641913737666,
              71.2522906841889,
              0.850809797101312
            ],
            [
              -156.8869788568328,
              71.25663701004588,
              0.850809797101312
            ],
            [
              -156.8735158867083,
              71.25683432135571,
              5.510809797101312
            ],
            [
              -156.87295877088323,
              71.2524879515215,
              5.510809797101312
            ],
            [
              -156.88641913737666,
              71.2522906841889,
              0.850809797101312
            ]
          ]
        ]
      },
      "bbox": [
        -156.8869789,
        71.25229068,
        0.8508097971,
        -156.8729588,
        71.25683432,
        5.510809797
      ],
      "properties": {
        "datetime": "2018-09-08T04:42:15Z",
        "pc:count": 1719453,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105856.1822,
            "count": 1719453,
            "maximum": -105621.6253,
            "minimum": -106117.1053,
            "name": "X",
            "position": 0,
            "stddev": 139.4683974,
            "variance": 19451.43387
          },
          {
            "average": 2364250.129,
            "count": 1719453,
            "maximum": 2364488.35,
            "minimum": 2364014.69,
            "name": "Y",
            "position": 1,
            "stddev": 131.1724599,
            "variance": 17206.21423
          },
          {
            "average": 1.371469937,
            "count": 1719453,
            "maximum": 5.510809797,
            "minimum": 0.8508097971,
            "name": "Z",
            "position": 2,
            "stddev": 0.675189492,
            "variance": 0.4558808501
          },
          {
            "average": 16546.74304,
            "count": 1719453,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11562.96029,
            "variance": 133702050.6
          },
          {
            "average": 1,
            "count": 1719453,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1719453,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.492274578,
            "count": 1719453,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999404597,
            "variance": 0.2499404632
          },
          {
            "average": 0.000537961782,
            "count": 1719453,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02318777031,
            "variance": 0.0005376726919
          },
          {
            "average": 7.220328209,
            "count": 1719453,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.894563408,
            "variance": 8.378497324
          },
          {
            "average": 3.531804683,
            "count": 1719453,
            "maximum": 16.2840004,
            "minimum": -16.22999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.820446656,
            "variance": 46.51849259
          },
          {
            "average": 0.49220537,
            "count": 1719453,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999393854,
            "variance": 0.2499393891
          },
          {
            "average": 407.6032558,
            "count": 1719453,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6720215672,
            "variance": 0.4516129868
          },
          {
            "average": 220415951.3,
            "count": 1719453,
            "maximum": 220416935.8,
            "minimum": 220414864.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 347.1272248,
            "variance": 120497.3102
          },
          {
            "average": 0.49220537,
            "count": 1719453,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999393854,
            "variance": 0.2499393891
          },
          {
            "average": 0,
            "count": 1719453,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1719453,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1719453,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07079169945,
            "count": 1719453,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.256476652,
            "variance": 0.065780273
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106117.1053,
          2364014.69,
          0.8508097971,
          -105621.6253,
          2364488.35,
          5.510809797
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106117.10529561108,
                2364014.6903861007,
                0.850809797101312
              ],
              [
                -106117.10529561108,
                2364488.350386101,
                0.850809797101312
              ],
              [
                -105621.62529561107,
                2364488.350386101,
                5.510809797101312
              ],
              [
                -105621.62529561107,
                2364014.6903861007,
                5.510809797101312
              ],
              [
                -106117.10529561108,
                2364014.6903861007,
                0.850809797101312
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:42:15+00:00",
        "end_time": "2018-09-08T04:07:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1720.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1720.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1720.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1720.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8869789,
            71.25229068,
            0.8508097971,
            -156.8729588,
            71.25683432,
            5.510809797
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.88641913737666,
                  71.2522906841889,
                  0.850809797101312
                ],
                [
                  -156.8869788568328,
                  71.25663701004588,
                  0.850809797101312
                ],
                [
                  -156.8735158867083,
                  71.25683432135571,
                  5.510809797101312
                ],
                [
                  -156.87295877088323,
                  71.2524879515215,
                  5.510809797101312
                ],
                [
                  -156.88641913737666,
                  71.2522906841889,
                  0.850809797101312
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1720.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1720.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:42:15Z",
            "pc:count": 1719453,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105856.1822,
                "count": 1719453,
                "maximum": -105621.6253,
                "minimum": -106117.1053,
                "name": "X",
                "position": 0,
                "stddev": 139.4683974,
                "variance": 19451.43387
              },
              {
                "average": 2364250.129,
                "count": 1719453,
                "maximum": 2364488.35,
                "minimum": 2364014.69,
                "name": "Y",
                "position": 1,
                "stddev": 131.1724599,
                "variance": 17206.21423
              },
              {
                "average": 1.371469937,
                "count": 1719453,
                "maximum": 5.510809797,
                "minimum": 0.8508097971,
                "name": "Z",
                "position": 2,
                "stddev": 0.675189492,
                "variance": 0.4558808501
              },
              {
                "average": 16546.74304,
                "count": 1719453,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11562.96029,
                "variance": 133702050.6
              },
              {
                "average": 1,
                "count": 1719453,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1719453,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.492274578,
                "count": 1719453,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999404597,
                "variance": 0.2499404632
              },
              {
                "average": 0.000537961782,
                "count": 1719453,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02318777031,
                "variance": 0.0005376726919
              },
              {
                "average": 7.220328209,
                "count": 1719453,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.894563408,
                "variance": 8.378497324
              },
              {
                "average": 3.531804683,
                "count": 1719453,
                "maximum": 16.2840004,
                "minimum": -16.22999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.820446656,
                "variance": 46.51849259
              },
              {
                "average": 0.49220537,
                "count": 1719453,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999393854,
                "variance": 0.2499393891
              },
              {
                "average": 407.6032558,
                "count": 1719453,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6720215672,
                "variance": 0.4516129868
              },
              {
                "average": 220415951.3,
                "count": 1719453,
                "maximum": 220416935.8,
                "minimum": 220414864.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 347.1272248,
                "variance": 120497.3102
              },
              {
                "average": 0.49220537,
                "count": 1719453,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999393854,
                "variance": 0.2499393891
              },
              {
                "average": 0,
                "count": 1719453,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1719453,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1719453,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07079169945,
                "count": 1719453,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.256476652,
                "variance": 0.065780273
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106117.1053,
              2364014.69,
              0.8508097971,
              -105621.6253,
              2364488.35,
              5.510809797
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106117.10529561108,
                    2364014.6903861007,
                    0.850809797101312
                  ],
                  [
                    -106117.10529561108,
                    2364488.350386101,
                    0.850809797101312
                  ],
                  [
                    -105621.62529561107,
                    2364488.350386101,
                    5.510809797101312
                  ],
                  [
                    -105621.62529561107,
                    2364014.6903861007,
                    5.510809797101312
                  ],
                  [
                    -106117.10529561108,
                    2364014.6903861007,
                    0.850809797101312
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:42:15+00:00",
            "end_time": "2018-09-08T04:07:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2146.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74364854653444,
              71.2923780706574,
              3.772089339349904
            ],
            [
              -156.74418143685585,
              71.2967250474684,
              3.772089339349904
            ],
            [
              -156.73068388268655,
              71.29691276026702,
              10.652089339349903
            ],
            [
              -156.73015360751987,
              71.292565741515,
              10.652089339349903
            ],
            [
              -156.74364854653444,
              71.2923780706574,
              3.772089339349904
            ]
          ]
        ]
      },
      "bbox": [
        -156.7441814,
        71.29237807,
        3.772089339,
        -156.7301536,
        71.29691276,
        10.65208934
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:27Z",
        "pc:count": 2060537,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100413.0135,
            "count": 2060537,
            "maximum": -100195.2512,
            "minimum": -100691.0712,
            "name": "X",
            "position": 0,
            "stddev": 136.072917,
            "variance": 18515.83874
          },
          {
            "average": 2368415.443,
            "count": 2060537,
            "maximum": 2368626.084,
            "minimum": 2368152.524,
            "name": "Y",
            "position": 1,
            "stddev": 126.7329526,
            "variance": 16061.24127
          },
          {
            "average": 4.779454657,
            "count": 2060537,
            "maximum": 10.65208934,
            "minimum": 3.772089339,
            "name": "Z",
            "position": 2,
            "stddev": 1.004794075,
            "variance": 1.009611132
          },
          {
            "average": 34568.80788,
            "count": 2060537,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 18579.49349,
            "variance": 345197578.4
          },
          {
            "average": 1.00168888,
            "count": 2060537,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04170626814,
            "variance": 0.001739412802
          },
          {
            "average": 1.003375819,
            "count": 2060537,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05936814806,
            "variance": 0.003524577005
          },
          {
            "average": 0.5003899469,
            "count": 2060537,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999693,
            "variance": 0.2499999693
          },
          {
            "average": 0.0004809425892,
            "count": 2060537,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02192513436,
            "variance": 0.0004807115168
          },
          {
            "average": 4.239242003,
            "count": 2060537,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.670305935,
            "variance": 13.47114566
          },
          {
            "average": 0.9402178063,
            "count": 2060537,
            "maximum": 16.34399986,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.053906359,
            "variance": 81.97322036
          },
          {
            "average": 0.5025777261,
            "count": 2060537,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999934766,
            "variance": 0.2499934767
          },
          {
            "average": 408.0408709,
            "count": 2060537,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8281862209,
            "variance": 0.6858924165
          },
          {
            "average": 220416201,
            "count": 2060537,
            "maximum": 220417247.9,
            "minimum": 220414983.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 470.3438663,
            "variance": 221223.3526
          },
          {
            "average": 0.5025777261,
            "count": 2060537,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999934766,
            "variance": 0.2499934767
          },
          {
            "average": 0,
            "count": 2060537,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2060537,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2060537,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1318564044,
            "count": 2060537,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3383346695,
            "variance": 0.1144703486
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100691.0712,
          2368152.524,
          3.772089339,
          -100195.2512,
          2368626.084,
          10.65208934
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100691.07118384991,
                2368152.5236387714,
                3.772089339349904
              ],
              [
                -100691.07118384991,
                2368626.083638771,
                3.772089339349904
              ],
              [
                -100195.2511838499,
                2368626.083638771,
                10.652089339349903
              ],
              [
                -100195.2511838499,
                2368152.5236387714,
                10.652089339349903
              ],
              [
                -100691.07118384991,
                2368152.5236387714,
                3.772089339349904
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:27+00:00",
        "end_time": "2018-09-08T04:09:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2146.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2146.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2146.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2146.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7441814,
            71.29237807,
            3.772089339,
            -156.7301536,
            71.29691276,
            10.65208934
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74364854653444,
                  71.2923780706574,
                  3.772089339349904
                ],
                [
                  -156.74418143685585,
                  71.2967250474684,
                  3.772089339349904
                ],
                [
                  -156.73068388268655,
                  71.29691276026702,
                  10.652089339349903
                ],
                [
                  -156.73015360751987,
                  71.292565741515,
                  10.652089339349903
                ],
                [
                  -156.74364854653444,
                  71.2923780706574,
                  3.772089339349904
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2146.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2146.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:27Z",
            "pc:count": 2060537,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100413.0135,
                "count": 2060537,
                "maximum": -100195.2512,
                "minimum": -100691.0712,
                "name": "X",
                "position": 0,
                "stddev": 136.072917,
                "variance": 18515.83874
              },
              {
                "average": 2368415.443,
                "count": 2060537,
                "maximum": 2368626.084,
                "minimum": 2368152.524,
                "name": "Y",
                "position": 1,
                "stddev": 126.7329526,
                "variance": 16061.24127
              },
              {
                "average": 4.779454657,
                "count": 2060537,
                "maximum": 10.65208934,
                "minimum": 3.772089339,
                "name": "Z",
                "position": 2,
                "stddev": 1.004794075,
                "variance": 1.009611132
              },
              {
                "average": 34568.80788,
                "count": 2060537,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 18579.49349,
                "variance": 345197578.4
              },
              {
                "average": 1.00168888,
                "count": 2060537,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04170626814,
                "variance": 0.001739412802
              },
              {
                "average": 1.003375819,
                "count": 2060537,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05936814806,
                "variance": 0.003524577005
              },
              {
                "average": 0.5003899469,
                "count": 2060537,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999693,
                "variance": 0.2499999693
              },
              {
                "average": 0.0004809425892,
                "count": 2060537,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02192513436,
                "variance": 0.0004807115168
              },
              {
                "average": 4.239242003,
                "count": 2060537,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.670305935,
                "variance": 13.47114566
              },
              {
                "average": 0.9402178063,
                "count": 2060537,
                "maximum": 16.34399986,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.053906359,
                "variance": 81.97322036
              },
              {
                "average": 0.5025777261,
                "count": 2060537,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999934766,
                "variance": 0.2499934767
              },
              {
                "average": 408.0408709,
                "count": 2060537,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8281862209,
                "variance": 0.6858924165
              },
              {
                "average": 220416201,
                "count": 2060537,
                "maximum": 220417247.9,
                "minimum": 220414983.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 470.3438663,
                "variance": 221223.3526
              },
              {
                "average": 0.5025777261,
                "count": 2060537,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999934766,
                "variance": 0.2499934767
              },
              {
                "average": 0,
                "count": 2060537,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2060537,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2060537,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1318564044,
                "count": 2060537,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3383346695,
                "variance": 0.1144703486
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100691.0712,
              2368152.524,
              3.772089339,
              -100195.2512,
              2368626.084,
              10.65208934
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100691.07118384991,
                    2368152.5236387714,
                    3.772089339349904
                  ],
                  [
                    -100691.07118384991,
                    2368626.083638771,
                    3.772089339349904
                  ],
                  [
                    -100195.2511838499,
                    2368626.083638771,
                    10.652089339349903
                  ],
                  [
                    -100195.2511838499,
                    2368152.5236387714,
                    10.652089339349903
                  ],
                  [
                    -100691.07118384991,
                    2368152.5236387714,
                    3.772089339349904
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:27+00:00",
            "end_time": "2018-09-08T04:09:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1941.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70699122921152,
              71.2675371200596,
              11.500928958364394
            ],
            [
              -156.70751664287314,
              71.27188530353466,
              11.500928958364394
            ],
            [
              -156.69403537258916,
              71.27207045067249,
              13.600928958364396
            ],
            [
              -156.69351256931245,
              71.26772222587749,
              13.600928958364396
            ],
            [
              -156.70699122921152,
              71.2675371200596,
              11.500928958364394
            ]
          ]
        ]
      },
      "bbox": [
        -156.7075166,
        71.26753712,
        11.50092896,
        -156.6935126,
        71.27207045,
        13.60092896
      ],
      "properties": {
        "datetime": "2018-09-11T18:11:03Z",
        "pc:count": 3962936,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99198.43855,
            "count": 3962936,
            "maximum": -98960.94194,
            "minimum": -99456.70194,
            "name": "X",
            "position": 0,
            "stddev": 134.7978373,
            "variance": 18170.45693
          },
          {
            "average": 2365634.948,
            "count": 3962936,
            "maximum": 2365869.19,
            "minimum": 2365395.43,
            "name": "Y",
            "position": 1,
            "stddev": 126.3343523,
            "variance": 15960.36858
          },
          {
            "average": 12.53253361,
            "count": 3962936,
            "maximum": 13.60092896,
            "minimum": 11.50092896,
            "name": "Z",
            "position": 2,
            "stddev": 0.2457137241,
            "variance": 0.06037523421
          },
          {
            "average": 43329.03957,
            "count": 3962936,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10684.63054,
            "variance": 114161329.8
          },
          {
            "average": 1,
            "count": 3962936,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3962936,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5065143621,
            "count": 3962936,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999576244,
            "variance": 0.2499576262
          },
          {
            "average": 0.0004345263209,
            "count": 3962936,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02084076816,
            "variance": 0.0004343376174
          },
          {
            "average": 1.272455826,
            "count": 3962936,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.445473642,
            "variance": 0.1984467657
          },
          {
            "average": -2.248254464,
            "count": 3962936,
            "maximum": 16.31999969,
            "minimum": -19.73999977,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.85604038,
            "variance": 117.8536127
          },
          {
            "average": 0.502439353,
            "count": 3962936,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999941126,
            "variance": 0.2499941126
          },
          {
            "average": 425.3314775,
            "count": 3962936,
            "maximum": 461,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.10575426,
            "variance": 327.8183375
          },
          {
            "average": 220483509.1,
            "count": 3962936,
            "maximum": 220724663,
            "minimum": 220419420.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 123073.0608,
            "variance": 15146978300.0
          },
          {
            "average": 0.502439353,
            "count": 3962936,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999941126,
            "variance": 0.2499941126
          },
          {
            "average": 0,
            "count": 3962936,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3962936,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3962936,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2211368036,
            "count": 3962936,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4150124831,
            "variance": 0.1722353612
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99456.70194,
          2365395.43,
          11.50092896,
          -98960.94194,
          2365869.19,
          13.60092896
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99456.70193937098,
                2365395.4301052466,
                11.500928958364394
              ],
              [
                -99456.70193937098,
                2365869.1901052464,
                11.500928958364394
              ],
              [
                -98960.94193937097,
                2365869.1901052464,
                13.600928958364396
              ],
              [
                -98960.94193937097,
                2365395.4301052466,
                13.600928958364396
              ],
              [
                -99456.70193937098,
                2365395.4301052466,
                11.500928958364394
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:11:03+00:00",
        "end_time": "2018-09-08T05:23:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1941.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1941.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1941.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1941.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7075166,
            71.26753712,
            11.50092896,
            -156.6935126,
            71.27207045,
            13.60092896
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70699122921152,
                  71.2675371200596,
                  11.500928958364394
                ],
                [
                  -156.70751664287314,
                  71.27188530353466,
                  11.500928958364394
                ],
                [
                  -156.69403537258916,
                  71.27207045067249,
                  13.600928958364396
                ],
                [
                  -156.69351256931245,
                  71.26772222587749,
                  13.600928958364396
                ],
                [
                  -156.70699122921152,
                  71.2675371200596,
                  11.500928958364394
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1941.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1941.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:11:03Z",
            "pc:count": 3962936,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99198.43855,
                "count": 3962936,
                "maximum": -98960.94194,
                "minimum": -99456.70194,
                "name": "X",
                "position": 0,
                "stddev": 134.7978373,
                "variance": 18170.45693
              },
              {
                "average": 2365634.948,
                "count": 3962936,
                "maximum": 2365869.19,
                "minimum": 2365395.43,
                "name": "Y",
                "position": 1,
                "stddev": 126.3343523,
                "variance": 15960.36858
              },
              {
                "average": 12.53253361,
                "count": 3962936,
                "maximum": 13.60092896,
                "minimum": 11.50092896,
                "name": "Z",
                "position": 2,
                "stddev": 0.2457137241,
                "variance": 0.06037523421
              },
              {
                "average": 43329.03957,
                "count": 3962936,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10684.63054,
                "variance": 114161329.8
              },
              {
                "average": 1,
                "count": 3962936,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3962936,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5065143621,
                "count": 3962936,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999576244,
                "variance": 0.2499576262
              },
              {
                "average": 0.0004345263209,
                "count": 3962936,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02084076816,
                "variance": 0.0004343376174
              },
              {
                "average": 1.272455826,
                "count": 3962936,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.445473642,
                "variance": 0.1984467657
              },
              {
                "average": -2.248254464,
                "count": 3962936,
                "maximum": 16.31999969,
                "minimum": -19.73999977,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.85604038,
                "variance": 117.8536127
              },
              {
                "average": 0.502439353,
                "count": 3962936,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999941126,
                "variance": 0.2499941126
              },
              {
                "average": 425.3314775,
                "count": 3962936,
                "maximum": 461,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.10575426,
                "variance": 327.8183375
              },
              {
                "average": 220483509.1,
                "count": 3962936,
                "maximum": 220724663,
                "minimum": 220419420.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 123073.0608,
                "variance": 15146978300.0
              },
              {
                "average": 0.502439353,
                "count": 3962936,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999941126,
                "variance": 0.2499941126
              },
              {
                "average": 0,
                "count": 3962936,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3962936,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3962936,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2211368036,
                "count": 3962936,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4150124831,
                "variance": 0.1722353612
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99456.70194,
              2365395.43,
              11.50092896,
              -98960.94194,
              2365869.19,
              13.60092896
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99456.70193937098,
                    2365395.4301052466,
                    11.500928958364394
                  ],
                  [
                    -99456.70193937098,
                    2365869.1901052464,
                    11.500928958364394
                  ],
                  [
                    -98960.94193937097,
                    2365869.1901052464,
                    13.600928958364396
                  ],
                  [
                    -98960.94193937097,
                    2365395.4301052466,
                    13.600928958364396
                  ],
                  [
                    -99456.70193937098,
                    2365395.4301052466,
                    11.500928958364394
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:11:03+00:00",
            "end_time": "2018-09-08T05:23:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1879.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84747409884366,
              71.26435148901517,
              0.966196834929036
            ],
            [
              -156.8480264280393,
              71.26869717550906,
              0.966196834929036
            ],
            [
              -156.83455370012194,
              71.26889186687565,
              33.10619683492904
            ],
            [
              -156.83400397738356,
              71.26454613696468,
              33.10619683492904
            ],
            [
              -156.84747409884366,
              71.26435148901517,
              0.966196834929036
            ]
          ]
        ]
      },
      "bbox": [
        -156.8480264,
        71.26435149,
        0.9661968349,
        -156.834004,
        71.26889187,
        33.10619683
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:42Z",
        "pc:count": 3027588,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104377.2673,
            "count": 3027588,
            "maximum": -104134.3587,
            "minimum": -104629.9187,
            "name": "X",
            "position": 0,
            "stddev": 134.2296395,
            "variance": 18017.59612
          },
          {
            "average": 2365496.498,
            "count": 3027588,
            "maximum": 2365738.317,
            "minimum": 2365264.777,
            "name": "Y",
            "position": 1,
            "stddev": 128.2624132,
            "variance": 16451.24664
          },
          {
            "average": 9.031330324,
            "count": 3027588,
            "maximum": 33.10619683,
            "minimum": 0.9661968349,
            "name": "Z",
            "position": 2,
            "stddev": 1.690248572,
            "variance": 2.856940235
          },
          {
            "average": 40840.64596,
            "count": 3027588,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10594.61576,
            "variance": 112245883.1
          },
          {
            "average": 1.000150615,
            "count": 3027588,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01227160584,
            "variance": 0.0001505923098
          },
          {
            "average": 1.00030123,
            "count": 3027588,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01735336423,
            "variance": 0.00030113925
          },
          {
            "average": 0.4990259573,
            "count": 3027588,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999991338,
            "variance": 0.2499991338
          },
          {
            "average": 0.0004472206919,
            "count": 3027588,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02114286719,
            "variance": 0.0004470208332
          },
          {
            "average": 1.405601753,
            "count": 3027588,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8784189206,
            "variance": 0.7716198
          },
          {
            "average": -0.5749515357,
            "count": 3027588,
            "maximum": 16.27199936,
            "minimum": -16.04400063,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.2601698,
            "variance": 105.2710843
          },
          {
            "average": 0.4555573612,
            "count": 3027588,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980210174,
            "variance": 0.2480249338
          },
          {
            "average": 407.5586867,
            "count": 3027588,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9642896723,
            "variance": 0.9298545722
          },
          {
            "average": 220415940.7,
            "count": 3027588,
            "maximum": 220416902.1,
            "minimum": 220414897.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 592.6707677,
            "variance": 351258.6389
          },
          {
            "average": 0.4555573612,
            "count": 3027588,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980210174,
            "variance": 0.2480249338
          },
          {
            "average": 0,
            "count": 3027588,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3027588,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3027588,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2141873333,
            "count": 3027588,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4102574498,
            "variance": 0.1683111751
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104629.9187,
          2365264.777,
          0.9661968349,
          -104134.3587,
          2365738.317,
          33.10619683
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104629.91866224178,
                2365264.7773591564,
                0.966196834929036
              ],
              [
                -104629.91866224178,
                2365738.3173591564,
                0.966196834929036
              ],
              [
                -104134.35866224178,
                2365738.3173591564,
                33.10619683492904
              ],
              [
                -104134.35866224178,
                2365264.7773591564,
                33.10619683492904
              ],
              [
                -104629.91866224178,
                2365264.7773591564,
                0.966196834929036
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:42+00:00",
        "end_time": "2018-09-08T04:08:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1879.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1879.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1879.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1879.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8480264,
            71.26435149,
            0.9661968349,
            -156.834004,
            71.26889187,
            33.10619683
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84747409884366,
                  71.26435148901517,
                  0.966196834929036
                ],
                [
                  -156.8480264280393,
                  71.26869717550906,
                  0.966196834929036
                ],
                [
                  -156.83455370012194,
                  71.26889186687565,
                  33.10619683492904
                ],
                [
                  -156.83400397738356,
                  71.26454613696468,
                  33.10619683492904
                ],
                [
                  -156.84747409884366,
                  71.26435148901517,
                  0.966196834929036
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1879.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1879.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:42Z",
            "pc:count": 3027588,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104377.2673,
                "count": 3027588,
                "maximum": -104134.3587,
                "minimum": -104629.9187,
                "name": "X",
                "position": 0,
                "stddev": 134.2296395,
                "variance": 18017.59612
              },
              {
                "average": 2365496.498,
                "count": 3027588,
                "maximum": 2365738.317,
                "minimum": 2365264.777,
                "name": "Y",
                "position": 1,
                "stddev": 128.2624132,
                "variance": 16451.24664
              },
              {
                "average": 9.031330324,
                "count": 3027588,
                "maximum": 33.10619683,
                "minimum": 0.9661968349,
                "name": "Z",
                "position": 2,
                "stddev": 1.690248572,
                "variance": 2.856940235
              },
              {
                "average": 40840.64596,
                "count": 3027588,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10594.61576,
                "variance": 112245883.1
              },
              {
                "average": 1.000150615,
                "count": 3027588,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01227160584,
                "variance": 0.0001505923098
              },
              {
                "average": 1.00030123,
                "count": 3027588,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01735336423,
                "variance": 0.00030113925
              },
              {
                "average": 0.4990259573,
                "count": 3027588,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999991338,
                "variance": 0.2499991338
              },
              {
                "average": 0.0004472206919,
                "count": 3027588,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02114286719,
                "variance": 0.0004470208332
              },
              {
                "average": 1.405601753,
                "count": 3027588,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8784189206,
                "variance": 0.7716198
              },
              {
                "average": -0.5749515357,
                "count": 3027588,
                "maximum": 16.27199936,
                "minimum": -16.04400063,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.2601698,
                "variance": 105.2710843
              },
              {
                "average": 0.4555573612,
                "count": 3027588,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980210174,
                "variance": 0.2480249338
              },
              {
                "average": 407.5586867,
                "count": 3027588,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9642896723,
                "variance": 0.9298545722
              },
              {
                "average": 220415940.7,
                "count": 3027588,
                "maximum": 220416902.1,
                "minimum": 220414897.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 592.6707677,
                "variance": 351258.6389
              },
              {
                "average": 0.4555573612,
                "count": 3027588,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980210174,
                "variance": 0.2480249338
              },
              {
                "average": 0,
                "count": 3027588,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3027588,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3027588,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2141873333,
                "count": 3027588,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4102574498,
                "variance": 0.1683111751
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104629.9187,
              2365264.777,
              0.9661968349,
              -104134.3587,
              2365738.317,
              33.10619683
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104629.91866224178,
                    2365264.7773591564,
                    0.966196834929036
                  ],
                  [
                    -104629.91866224178,
                    2365738.3173591564,
                    0.966196834929036
                  ],
                  [
                    -104134.35866224178,
                    2365738.3173591564,
                    33.10619683492904
                  ],
                  [
                    -104134.35866224178,
                    2365264.7773591564,
                    33.10619683492904
                  ],
                  [
                    -104629.91866224178,
                    2365264.7773591564,
                    0.966196834929036
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:42+00:00",
            "end_time": "2018-09-08T04:08:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2083.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74418124221765,
              71.28418420696437,
              -11.419837057842136
            ],
            [
              -156.744714131009,
              71.28853167629477,
              -11.419837057842136
            ],
            [
              -156.7312204295446,
              71.2887194304938,
              20.70016294215786
            ],
            [
              -156.73069015464426,
              71.28437191922822,
              20.70016294215786
            ],
            [
              -156.74418124221765,
              71.28418420696437,
              -11.419837057842136
            ]
          ]
        ]
      },
      "bbox": [
        -156.7447141,
        71.28418421,
        -11.41983706,
        -156.7306902,
        71.28871943,
        20.70016294
      ],
      "properties": {
        "datetime": "2018-09-08T05:05:50Z",
        "pc:count": 2423876,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100539.1289,
            "count": 2423876,
            "maximum": -100251.5943,
            "minimum": -100747.4543,
            "name": "X",
            "position": 0,
            "stddev": 120.0102675,
            "variance": 14402.46431
          },
          {
            "average": 2367497.853,
            "count": 2423876,
            "maximum": 2367735.817,
            "minimum": 2367262.177,
            "name": "Y",
            "position": 1,
            "stddev": 126.1286939,
            "variance": 15908.44742
          },
          {
            "average": 7.273747874,
            "count": 2423876,
            "maximum": 20.70016294,
            "minimum": -11.41983706,
            "name": "Z",
            "position": 2,
            "stddev": 2.450788079,
            "variance": 6.006362208
          },
          {
            "average": 36921.95234,
            "count": 2423876,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16138.03533,
            "variance": 260436184.3
          },
          {
            "average": 1.001465009,
            "count": 2423876,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04062224362,
            "variance": 0.001650166677
          },
          {
            "average": 1.002930843,
            "count": 2423876,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05902681193,
            "variance": 0.003484164526
          },
          {
            "average": 0.4998584911,
            "count": 2423876,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000831,
            "variance": 0.2500000831
          },
          {
            "average": 0.0004810477104,
            "count": 2423876,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0219275284,
            "variance": 0.0004808165018
          },
          {
            "average": 2.794613256,
            "count": 2423876,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.889981407,
            "variance": 8.351992535
          },
          {
            "average": -0.2651561189,
            "count": 2423876,
            "maximum": 16.46999931,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.801162501,
            "variance": 96.06278638
          },
          {
            "average": 0.4654899838,
            "count": 2423876,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988077399,
            "variance": 0.2488091614
          },
          {
            "average": 409.8036331,
            "count": 2423876,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.870476796,
            "variance": 0.7577298525
          },
          {
            "average": 220417207.3,
            "count": 2423876,
            "maximum": 220418350.2,
            "minimum": 220416095.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 500.7153968,
            "variance": 250715.9086
          },
          {
            "average": 0.4654899838,
            "count": 2423876,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988077399,
            "variance": 0.2488091614
          },
          {
            "average": 0,
            "count": 2423876,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2423876,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2423876,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1937817776,
            "count": 2423876,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3952599964,
            "variance": 0.1562304647
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100747.4543,
          2367262.177,
          -11.41983706,
          -100251.5943,
          2367735.817,
          20.70016294
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100747.45434055367,
                2367262.176616232,
                -11.419837057842136
              ],
              [
                -100747.45434055367,
                2367735.8166162316,
                -11.419837057842136
              ],
              [
                -100251.59434055368,
                2367735.8166162316,
                20.70016294215786
              ],
              [
                -100251.59434055368,
                2367262.176616232,
                20.70016294215786
              ],
              [
                -100747.45434055367,
                2367262.176616232,
                -11.419837057842136
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:05:50+00:00",
        "end_time": "2018-09-08T04:28:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2083.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2083.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2083.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2083.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7447141,
            71.28418421,
            -11.41983706,
            -156.7306902,
            71.28871943,
            20.70016294
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74418124221765,
                  71.28418420696437,
                  -11.419837057842136
                ],
                [
                  -156.744714131009,
                  71.28853167629477,
                  -11.419837057842136
                ],
                [
                  -156.7312204295446,
                  71.2887194304938,
                  20.70016294215786
                ],
                [
                  -156.73069015464426,
                  71.28437191922822,
                  20.70016294215786
                ],
                [
                  -156.74418124221765,
                  71.28418420696437,
                  -11.419837057842136
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2083.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2083.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:05:50Z",
            "pc:count": 2423876,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100539.1289,
                "count": 2423876,
                "maximum": -100251.5943,
                "minimum": -100747.4543,
                "name": "X",
                "position": 0,
                "stddev": 120.0102675,
                "variance": 14402.46431
              },
              {
                "average": 2367497.853,
                "count": 2423876,
                "maximum": 2367735.817,
                "minimum": 2367262.177,
                "name": "Y",
                "position": 1,
                "stddev": 126.1286939,
                "variance": 15908.44742
              },
              {
                "average": 7.273747874,
                "count": 2423876,
                "maximum": 20.70016294,
                "minimum": -11.41983706,
                "name": "Z",
                "position": 2,
                "stddev": 2.450788079,
                "variance": 6.006362208
              },
              {
                "average": 36921.95234,
                "count": 2423876,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16138.03533,
                "variance": 260436184.3
              },
              {
                "average": 1.001465009,
                "count": 2423876,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04062224362,
                "variance": 0.001650166677
              },
              {
                "average": 1.002930843,
                "count": 2423876,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05902681193,
                "variance": 0.003484164526
              },
              {
                "average": 0.4998584911,
                "count": 2423876,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000831,
                "variance": 0.2500000831
              },
              {
                "average": 0.0004810477104,
                "count": 2423876,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0219275284,
                "variance": 0.0004808165018
              },
              {
                "average": 2.794613256,
                "count": 2423876,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.889981407,
                "variance": 8.351992535
              },
              {
                "average": -0.2651561189,
                "count": 2423876,
                "maximum": 16.46999931,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.801162501,
                "variance": 96.06278638
              },
              {
                "average": 0.4654899838,
                "count": 2423876,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988077399,
                "variance": 0.2488091614
              },
              {
                "average": 409.8036331,
                "count": 2423876,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.870476796,
                "variance": 0.7577298525
              },
              {
                "average": 220417207.3,
                "count": 2423876,
                "maximum": 220418350.2,
                "minimum": 220416095.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 500.7153968,
                "variance": 250715.9086
              },
              {
                "average": 0.4654899838,
                "count": 2423876,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988077399,
                "variance": 0.2488091614
              },
              {
                "average": 0,
                "count": 2423876,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2423876,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2423876,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1937817776,
                "count": 2423876,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3952599964,
                "variance": 0.1562304647
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100747.4543,
              2367262.177,
              -11.41983706,
              -100251.5943,
              2367735.817,
              20.70016294
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100747.45434055367,
                    2367262.176616232,
                    -11.419837057842136
                  ],
                  [
                    -100747.45434055367,
                    2367735.8166162316,
                    -11.419837057842136
                  ],
                  [
                    -100251.59434055368,
                    2367735.8166162316,
                    20.70016294215786
                  ],
                  [
                    -100251.59434055368,
                    2367262.176616232,
                    20.70016294215786
                  ],
                  [
                    -100747.45434055367,
                    2367262.176616232,
                    -11.419837057842136
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:05:50+00:00",
            "end_time": "2018-09-08T04:28:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1671.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83570883745776,
              71.24788501148369,
              1.96800780872438
            ],
            [
              -156.83625200412806,
              71.25217904776358,
              1.96800780872438
            ],
            [
              -156.82278855158756,
              71.25237291946257,
              96.94800780872438
            ],
            [
              -156.8222479570573,
              71.24807884050277,
              96.94800780872438
            ],
            [
              -156.83570883745776,
              71.24788501148369,
              1.96800780872438
            ]
          ]
        ]
      },
      "bbox": [
        -156.836252,
        71.24788501,
        1.968007809,
        -156.822248,
        71.25237292,
        96.94800781
      ],
      "properties": {
        "datetime": "2018-09-11T18:38:12Z",
        "pc:count": 3144997,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104022.0272,
            "count": 3144997,
            "maximum": -103778.8174,
            "minimum": -104274.3974,
            "name": "X",
            "position": 0,
            "stddev": 134.3839974,
            "variance": 18059.05876
          },
          {
            "average": 2363671.519,
            "count": 3144997,
            "maximum": 2363923.082,
            "minimum": 2363455.122,
            "name": "Y",
            "position": 1,
            "stddev": 125.2875057,
            "variance": 15696.95909
          },
          {
            "average": 9.92800336,
            "count": 3144997,
            "maximum": 96.94800781,
            "minimum": 1.968007809,
            "name": "Z",
            "position": 2,
            "stddev": 2.102590182,
            "variance": 4.420885474
          },
          {
            "average": 47721.93123,
            "count": 3144997,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 8293.522812,
            "variance": 68782520.63
          },
          {
            "average": 1.000000954,
            "count": 3144997,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009766756754,
            "variance": 9.538953748e-07
          },
          {
            "average": 1.000001908,
            "count": 3144997,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001381227327,
            "variance": 1.90778893e-06
          },
          {
            "average": 0.5035015932,
            "count": 3144997,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999878182,
            "variance": 0.2499878183
          },
          {
            "average": 0.0005694759009,
            "count": 3144997,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02385690213,
            "variance": 0.0005691517791
          },
          {
            "average": 1.302083913,
            "count": 3144997,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.504477343,
            "variance": 0.2544973896
          },
          {
            "average": -1.20067719,
            "count": 3144997,
            "maximum": 16.32600021,
            "minimum": -19.72800064,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.30060284,
            "variance": 127.7036246
          },
          {
            "average": 0.4962437166,
            "count": 3144997,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999859696,
            "variance": 0.2499859698
          },
          {
            "average": 416.7761222,
            "count": 3144997,
            "maximum": 465,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.12282343,
            "variance": 228.6997884
          },
          {
            "average": 220445970.8,
            "count": 3144997,
            "maximum": 220726292.5,
            "minimum": 220417143.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 87758.50439,
            "variance": 7701555093
          },
          {
            "average": 0.4962437166,
            "count": 3144997,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999859696,
            "variance": 0.2499859698
          },
          {
            "average": 0,
            "count": 3144997,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3144997,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3144997,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2565512781,
            "count": 3144997,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4367296423,
            "variance": 0.1907327805
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104274.3974,
          2363455.122,
          1.968007809,
          -103778.8174,
          2363923.082,
          96.94800781
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104274.39737508648,
                2363455.1216769307,
                1.96800780872438
              ],
              [
                -104274.39737508648,
                2363923.0816769307,
                1.96800780872438
              ],
              [
                -103778.8173750865,
                2363923.0816769307,
                96.94800780872438
              ],
              [
                -103778.8173750865,
                2363455.1216769307,
                96.94800780872438
              ],
              [
                -104274.39737508648,
                2363455.1216769307,
                1.96800780872438
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:38:12+00:00",
        "end_time": "2018-09-08T04:45:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1671.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1671.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1671.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1671.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.836252,
            71.24788501,
            1.968007809,
            -156.822248,
            71.25237292,
            96.94800781
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83570883745776,
                  71.24788501148369,
                  1.96800780872438
                ],
                [
                  -156.83625200412806,
                  71.25217904776358,
                  1.96800780872438
                ],
                [
                  -156.82278855158756,
                  71.25237291946257,
                  96.94800780872438
                ],
                [
                  -156.8222479570573,
                  71.24807884050277,
                  96.94800780872438
                ],
                [
                  -156.83570883745776,
                  71.24788501148369,
                  1.96800780872438
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1671.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1671.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:38:12Z",
            "pc:count": 3144997,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104022.0272,
                "count": 3144997,
                "maximum": -103778.8174,
                "minimum": -104274.3974,
                "name": "X",
                "position": 0,
                "stddev": 134.3839974,
                "variance": 18059.05876
              },
              {
                "average": 2363671.519,
                "count": 3144997,
                "maximum": 2363923.082,
                "minimum": 2363455.122,
                "name": "Y",
                "position": 1,
                "stddev": 125.2875057,
                "variance": 15696.95909
              },
              {
                "average": 9.92800336,
                "count": 3144997,
                "maximum": 96.94800781,
                "minimum": 1.968007809,
                "name": "Z",
                "position": 2,
                "stddev": 2.102590182,
                "variance": 4.420885474
              },
              {
                "average": 47721.93123,
                "count": 3144997,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 8293.522812,
                "variance": 68782520.63
              },
              {
                "average": 1.000000954,
                "count": 3144997,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009766756754,
                "variance": 9.538953748e-07
              },
              {
                "average": 1.000001908,
                "count": 3144997,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001381227327,
                "variance": 1.90778893e-06
              },
              {
                "average": 0.5035015932,
                "count": 3144997,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999878182,
                "variance": 0.2499878183
              },
              {
                "average": 0.0005694759009,
                "count": 3144997,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02385690213,
                "variance": 0.0005691517791
              },
              {
                "average": 1.302083913,
                "count": 3144997,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.504477343,
                "variance": 0.2544973896
              },
              {
                "average": -1.20067719,
                "count": 3144997,
                "maximum": 16.32600021,
                "minimum": -19.72800064,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.30060284,
                "variance": 127.7036246
              },
              {
                "average": 0.4962437166,
                "count": 3144997,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999859696,
                "variance": 0.2499859698
              },
              {
                "average": 416.7761222,
                "count": 3144997,
                "maximum": 465,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.12282343,
                "variance": 228.6997884
              },
              {
                "average": 220445970.8,
                "count": 3144997,
                "maximum": 220726292.5,
                "minimum": 220417143.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 87758.50439,
                "variance": 7701555093
              },
              {
                "average": 0.4962437166,
                "count": 3144997,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999859696,
                "variance": 0.2499859698
              },
              {
                "average": 0,
                "count": 3144997,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3144997,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3144997,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2565512781,
                "count": 3144997,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4367296423,
                "variance": 0.1907327805
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104274.3974,
              2363455.122,
              1.968007809,
              -103778.8174,
              2363923.082,
              96.94800781
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104274.39737508648,
                    2363455.1216769307,
                    1.96800780872438
                  ],
                  [
                    -104274.39737508648,
                    2363923.0816769307,
                    1.96800780872438
                  ],
                  [
                    -103778.8173750865,
                    2363923.0816769307,
                    96.94800780872438
                  ],
                  [
                    -103778.8173750865,
                    2363455.1216769307,
                    96.94800780872438
                  ],
                  [
                    -104274.39737508648,
                    2363455.1216769307,
                    1.96800780872438
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:38:12+00:00",
            "end_time": "2018-09-08T04:45:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1673.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81023638621198,
              71.24772561940496,
              9.845067514777199
            ],
            [
              -156.81078125375302,
              71.25207220987586,
              9.845067514777199
            ],
            [
              -156.797317646713,
              71.2522643372803,
              77.9650675147772
            ],
            [
              -156.79677538289064,
              71.24791770399628,
              77.9650675147772
            ],
            [
              -156.81023638621198,
              71.24772561940496,
              9.845067514777199
            ]
          ]
        ]
      },
      "bbox": [
        -156.8107813,
        71.24772562,
        9.845067515,
        -156.7967754,
        71.25226434,
        77.96506751
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:58Z",
        "pc:count": 3317093,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103089.5969,
            "count": 3317093,
            "maximum": -102843.4428,
            "minimum": -103339.0228,
            "name": "X",
            "position": 0,
            "stddev": 137.6872147,
            "variance": 18957.76909
          },
          {
            "average": 2363626.371,
            "count": 3317093,
            "maximum": 2363871.647,
            "minimum": 2363397.967,
            "name": "Y",
            "position": 1,
            "stddev": 129.1389709,
            "variance": 16676.87381
          },
          {
            "average": 10.86418827,
            "count": 3317093,
            "maximum": 77.96506751,
            "minimum": 9.845067515,
            "name": "Z",
            "position": 2,
            "stddev": 0.8401074892,
            "variance": 0.7057805934
          },
          {
            "average": 42444.90338,
            "count": 3317093,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11717.83933,
            "variance": 137307758.6
          },
          {
            "average": 1.00000211,
            "count": 3317093,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001452679485,
            "variance": 2.110277685e-06
          },
          {
            "average": 1.000004221,
            "count": 3317093,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002054396861,
            "variance": 4.220546464e-06
          },
          {
            "average": 0.502320556,
            "count": 3317093,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999946904,
            "variance": 0.2499946904
          },
          {
            "average": 0.0005498790658,
            "count": 3317093,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02344305578,
            "variance": 0.0005495768645
          },
          {
            "average": 1.291144385,
            "count": 3317093,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4548669585,
            "variance": 0.20690395
          },
          {
            "average": -2.167281566,
            "count": 3317093,
            "maximum": 16.39800072,
            "minimum": -19.72200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.96563845,
            "variance": 120.2452265
          },
          {
            "average": 0.4622791703,
            "count": 3317093,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985751838,
            "variance": 0.2485772139
          },
          {
            "average": 417.5974701,
            "count": 3317093,
            "maximum": 465,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.63199993,
            "variance": 185.8314221
          },
          {
            "average": 220442710.7,
            "count": 3317093,
            "maximum": 220726278.4,
            "minimum": 220418266.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 81357.64887,
            "variance": 6619067029
          },
          {
            "average": 0.4622791703,
            "count": 3317093,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985751838,
            "variance": 0.2485772139
          },
          {
            "average": 0,
            "count": 3317093,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3317093,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3317093,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2457335384,
            "count": 3317093,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4305213379,
            "variance": 0.1853486224
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103339.0228,
          2363397.967,
          9.845067515,
          -102843.4428,
          2363871.647,
          77.96506751
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103339.02282720596,
                2363397.966700839,
                9.845067514777199
              ],
              [
                -103339.02282720596,
                2363871.6467008386,
                9.845067514777199
              ],
              [
                -102843.44282720597,
                2363871.6467008386,
                77.9650675147772
              ],
              [
                -102843.44282720597,
                2363397.966700839,
                77.9650675147772
              ],
              [
                -103339.02282720596,
                2363397.966700839,
                9.845067514777199
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:58+00:00",
        "end_time": "2018-09-08T05:04:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1673.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1673.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1673.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1673.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8107813,
            71.24772562,
            9.845067515,
            -156.7967754,
            71.25226434,
            77.96506751
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81023638621198,
                  71.24772561940496,
                  9.845067514777199
                ],
                [
                  -156.81078125375302,
                  71.25207220987586,
                  9.845067514777199
                ],
                [
                  -156.797317646713,
                  71.2522643372803,
                  77.9650675147772
                ],
                [
                  -156.79677538289064,
                  71.24791770399628,
                  77.9650675147772
                ],
                [
                  -156.81023638621198,
                  71.24772561940496,
                  9.845067514777199
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1673.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1673.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:58Z",
            "pc:count": 3317093,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103089.5969,
                "count": 3317093,
                "maximum": -102843.4428,
                "minimum": -103339.0228,
                "name": "X",
                "position": 0,
                "stddev": 137.6872147,
                "variance": 18957.76909
              },
              {
                "average": 2363626.371,
                "count": 3317093,
                "maximum": 2363871.647,
                "minimum": 2363397.967,
                "name": "Y",
                "position": 1,
                "stddev": 129.1389709,
                "variance": 16676.87381
              },
              {
                "average": 10.86418827,
                "count": 3317093,
                "maximum": 77.96506751,
                "minimum": 9.845067515,
                "name": "Z",
                "position": 2,
                "stddev": 0.8401074892,
                "variance": 0.7057805934
              },
              {
                "average": 42444.90338,
                "count": 3317093,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11717.83933,
                "variance": 137307758.6
              },
              {
                "average": 1.00000211,
                "count": 3317093,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001452679485,
                "variance": 2.110277685e-06
              },
              {
                "average": 1.000004221,
                "count": 3317093,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002054396861,
                "variance": 4.220546464e-06
              },
              {
                "average": 0.502320556,
                "count": 3317093,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999946904,
                "variance": 0.2499946904
              },
              {
                "average": 0.0005498790658,
                "count": 3317093,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02344305578,
                "variance": 0.0005495768645
              },
              {
                "average": 1.291144385,
                "count": 3317093,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4548669585,
                "variance": 0.20690395
              },
              {
                "average": -2.167281566,
                "count": 3317093,
                "maximum": 16.39800072,
                "minimum": -19.72200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.96563845,
                "variance": 120.2452265
              },
              {
                "average": 0.4622791703,
                "count": 3317093,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985751838,
                "variance": 0.2485772139
              },
              {
                "average": 417.5974701,
                "count": 3317093,
                "maximum": 465,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.63199993,
                "variance": 185.8314221
              },
              {
                "average": 220442710.7,
                "count": 3317093,
                "maximum": 220726278.4,
                "minimum": 220418266.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 81357.64887,
                "variance": 6619067029
              },
              {
                "average": 0.4622791703,
                "count": 3317093,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985751838,
                "variance": 0.2485772139
              },
              {
                "average": 0,
                "count": 3317093,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3317093,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3317093,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2457335384,
                "count": 3317093,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4305213379,
                "variance": 0.1853486224
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103339.0228,
              2363397.967,
              9.845067515,
              -102843.4428,
              2363871.647,
              77.96506751
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103339.02282720596,
                    2363397.966700839,
                    9.845067514777199
                  ],
                  [
                    -103339.02282720596,
                    2363871.6467008386,
                    9.845067514777199
                  ],
                  [
                    -102843.44282720597,
                    2363871.6467008386,
                    77.9650675147772
                  ],
                  [
                    -102843.44282720597,
                    2363397.966700839,
                    77.9650675147772
                  ],
                  [
                    -103339.02282720596,
                    2363397.966700839,
                    9.845067514777199
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:58+00:00",
            "end_time": "2018-09-08T05:04:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2016.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7319556692792,
              71.2759057482971,
              6.985503741099513
            ],
            [
              -156.73248585496464,
              71.28025190673479,
              6.985503741099513
            ],
            [
              -156.71899866955053,
              71.28043879003543,
              12.385503741099512
            ],
            [
              -156.7184710949266,
              71.2760925898896,
              12.385503741099512
            ],
            [
              -156.7319556692792,
              71.2759057482971,
              6.985503741099513
            ]
          ]
        ]
      },
      "bbox": [
        -156.7324859,
        71.27590575,
        6.985503741,
        -156.7184711,
        71.28043879,
        12.38550374
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:47Z",
        "pc:count": 3319592,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100089.4032,
            "count": 3319592,
            "maximum": -99840.13041,
            "minimum": -100335.9304,
            "name": "X",
            "position": 0,
            "stddev": 134.3300885,
            "variance": 18044.57268
          },
          {
            "average": 2366579.817,
            "count": 3319592,
            "maximum": 2366816.779,
            "minimum": 2366343.259,
            "name": "Y",
            "position": 1,
            "stddev": 128.4637618,
            "variance": 16502.9381
          },
          {
            "average": 10.79481531,
            "count": 3319592,
            "maximum": 12.38550374,
            "minimum": 6.985503741,
            "name": "Z",
            "position": 2,
            "stddev": 1.155372316,
            "variance": 1.334885189
          },
          {
            "average": 46701.13086,
            "count": 3319592,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 8267.065974,
            "variance": 68344379.82
          },
          {
            "average": 1,
            "count": 3319592,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3319592,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5041396654,
            "count": 3319592,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999829382,
            "variance": 0.2499829385
          },
          {
            "average": 0.0004018566137,
            "count": 3319592,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02004233634,
            "variance": 0.000401695246
          },
          {
            "average": 1.285556177,
            "count": 3319592,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4524086957,
            "variance": 0.204673628
          },
          {
            "average": 0.5703514297,
            "count": 3319592,
            "maximum": 16.35000038,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51143242,
            "variance": 110.4902114
          },
          {
            "average": 0.540733319,
            "count": 3319592,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4983381097,
            "variance": 0.2483408715
          },
          {
            "average": 412.5441967,
            "count": 3319592,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9595905086,
            "variance": 0.9208139441
          },
          {
            "average": 220418710.8,
            "count": 3319592,
            "maximum": 220419427.5,
            "minimum": 220417942.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 513.9407998,
            "variance": 264135.1457
          },
          {
            "average": 0.540733319,
            "count": 3319592,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4983381097,
            "variance": 0.2483408715
          },
          {
            "average": 0,
            "count": 3319592,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3319592,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3319592,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2510793495,
            "count": 3319592,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4336341389,
            "variance": 0.1880385664
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100335.9304,
          2366343.259,
          6.985503741,
          -99840.13041,
          2366816.779,
          12.38550374
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100335.9304112148,
                2366343.259333456,
                6.985503741099513
              ],
              [
                -100335.9304112148,
                2366816.7793334555,
                6.985503741099513
              ],
              [
                -99840.1304112148,
                2366816.7793334555,
                12.385503741099512
              ],
              [
                -99840.1304112148,
                2366343.259333456,
                12.385503741099512
              ],
              [
                -100335.9304112148,
                2366343.259333456,
                6.985503741099513
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:47+00:00",
        "end_time": "2018-09-08T04:59:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2016.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2016.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2016.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2016.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7324859,
            71.27590575,
            6.985503741,
            -156.7184711,
            71.28043879,
            12.38550374
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7319556692792,
                  71.2759057482971,
                  6.985503741099513
                ],
                [
                  -156.73248585496464,
                  71.28025190673479,
                  6.985503741099513
                ],
                [
                  -156.71899866955053,
                  71.28043879003543,
                  12.385503741099512
                ],
                [
                  -156.7184710949266,
                  71.2760925898896,
                  12.385503741099512
                ],
                [
                  -156.7319556692792,
                  71.2759057482971,
                  6.985503741099513
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2016.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2016.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:47Z",
            "pc:count": 3319592,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100089.4032,
                "count": 3319592,
                "maximum": -99840.13041,
                "minimum": -100335.9304,
                "name": "X",
                "position": 0,
                "stddev": 134.3300885,
                "variance": 18044.57268
              },
              {
                "average": 2366579.817,
                "count": 3319592,
                "maximum": 2366816.779,
                "minimum": 2366343.259,
                "name": "Y",
                "position": 1,
                "stddev": 128.4637618,
                "variance": 16502.9381
              },
              {
                "average": 10.79481531,
                "count": 3319592,
                "maximum": 12.38550374,
                "minimum": 6.985503741,
                "name": "Z",
                "position": 2,
                "stddev": 1.155372316,
                "variance": 1.334885189
              },
              {
                "average": 46701.13086,
                "count": 3319592,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 8267.065974,
                "variance": 68344379.82
              },
              {
                "average": 1,
                "count": 3319592,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3319592,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5041396654,
                "count": 3319592,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999829382,
                "variance": 0.2499829385
              },
              {
                "average": 0.0004018566137,
                "count": 3319592,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02004233634,
                "variance": 0.000401695246
              },
              {
                "average": 1.285556177,
                "count": 3319592,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4524086957,
                "variance": 0.204673628
              },
              {
                "average": 0.5703514297,
                "count": 3319592,
                "maximum": 16.35000038,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51143242,
                "variance": 110.4902114
              },
              {
                "average": 0.540733319,
                "count": 3319592,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4983381097,
                "variance": 0.2483408715
              },
              {
                "average": 412.5441967,
                "count": 3319592,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9595905086,
                "variance": 0.9208139441
              },
              {
                "average": 220418710.8,
                "count": 3319592,
                "maximum": 220419427.5,
                "minimum": 220417942.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 513.9407998,
                "variance": 264135.1457
              },
              {
                "average": 0.540733319,
                "count": 3319592,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4983381097,
                "variance": 0.2483408715
              },
              {
                "average": 0,
                "count": 3319592,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3319592,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3319592,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2510793495,
                "count": 3319592,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4336341389,
                "variance": 0.1880385664
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100335.9304,
              2366343.259,
              6.985503741,
              -99840.13041,
              2366816.779,
              12.38550374
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100335.9304112148,
                    2366343.259333456,
                    6.985503741099513
                  ],
                  [
                    -100335.9304112148,
                    2366816.7793334555,
                    6.985503741099513
                  ],
                  [
                    -99840.1304112148,
                    2366816.7793334555,
                    12.385503741099512
                  ],
                  [
                    -99840.1304112148,
                    2366343.259333456,
                    12.385503741099512
                  ],
                  [
                    -100335.9304112148,
                    2366343.259333456,
                    6.985503741099513
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:47+00:00",
            "end_time": "2018-09-08T04:59:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1784.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7460308178437,
              71.2555047218768,
              9.834167990343438
            ],
            [
              -156.74656354112577,
              71.25985263261634,
              9.834167990343438
            ],
            [
              -156.7330914587766,
              71.2600404174472,
              75.51416799034345
            ],
            [
              -156.73256134262235,
              71.25569246483072,
              75.51416799034345
            ],
            [
              -156.7460308178437,
              71.2555047218768,
              9.834167990343438
            ]
          ]
        ]
      },
      "bbox": [
        -156.7465635,
        71.25550472,
        9.83416799,
        -156.7325613,
        71.26004042,
        75.51416799
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:09Z",
        "pc:count": 3749296,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100687.3721,
            "count": 3749296,
            "maximum": -100448.6824,
            "minimum": -100944.3824,
            "name": "X",
            "position": 0,
            "stddev": 135.5418079,
            "variance": 18371.58168
          },
          {
            "average": 2364386.272,
            "count": 3749296,
            "maximum": 2364619.234,
            "minimum": 2364145.454,
            "name": "Y",
            "position": 1,
            "stddev": 127.8113634,
            "variance": 16335.74461
          },
          {
            "average": 10.78583842,
            "count": 3749296,
            "maximum": 75.51416799,
            "minimum": 9.83416799,
            "name": "Z",
            "position": 2,
            "stddev": 0.3932557033,
            "variance": 0.1546500482
          },
          {
            "average": 38257.79177,
            "count": 3749296,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11287.70645,
            "variance": 127412316.8
          },
          {
            "average": 1.0000016,
            "count": 3749296,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00126502897,
            "variance": 1.600298296e-06
          },
          {
            "average": 1.000003201,
            "count": 3749296,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001789019695,
            "variance": 3.200591469e-06
          },
          {
            "average": 0.5056474602,
            "count": 3749296,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999681719,
            "variance": 0.2499681729
          },
          {
            "average": 0.0003920736053,
            "count": 3749296,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01979696916,
            "variance": 0.0003919199881
          },
          {
            "average": 1.271653132,
            "count": 3749296,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4819811581,
            "variance": 0.2323058367
          },
          {
            "average": -1.002667345,
            "count": 3749296,
            "maximum": 16.38599968,
            "minimum": -19.77000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78259649,
            "variance": 116.2643871
          },
          {
            "average": 0.5169090411,
            "count": 3749296,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997140692,
            "variance": 0.2497141509
          },
          {
            "average": 424.9098849,
            "count": 3749296,
            "maximum": 463,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.19134333,
            "variance": 330.924972
          },
          {
            "average": 220477757.7,
            "count": 3749296,
            "maximum": 220725449.3,
            "minimum": 220419387.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 118820.7739,
            "variance": 14118376310.0
          },
          {
            "average": 0.5169090411,
            "count": 3749296,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997140692,
            "variance": 0.2497141509
          },
          {
            "average": 0,
            "count": 3749296,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3749296,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3749296,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2262619436,
            "count": 3749296,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4184107111,
            "variance": 0.1750675232
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100944.3824,
          2364145.454,
          9.83416799,
          -100448.6824,
          2364619.234,
          75.51416799
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100944.38235027925,
                2364145.4535631887,
                9.834167990343438
              ],
              [
                -100944.38235027925,
                2364619.233563189,
                9.834167990343438
              ],
              [
                -100448.68235027924,
                2364619.233563189,
                75.51416799034345
              ],
              [
                -100448.68235027924,
                2364145.4535631887,
                75.51416799034345
              ],
              [
                -100944.38235027925,
                2364145.4535631887,
                9.834167990343438
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:09+00:00",
        "end_time": "2018-09-08T05:23:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1784.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1784.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1784.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1784.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7465635,
            71.25550472,
            9.83416799,
            -156.7325613,
            71.26004042,
            75.51416799
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7460308178437,
                  71.2555047218768,
                  9.834167990343438
                ],
                [
                  -156.74656354112577,
                  71.25985263261634,
                  9.834167990343438
                ],
                [
                  -156.7330914587766,
                  71.2600404174472,
                  75.51416799034345
                ],
                [
                  -156.73256134262235,
                  71.25569246483072,
                  75.51416799034345
                ],
                [
                  -156.7460308178437,
                  71.2555047218768,
                  9.834167990343438
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1784.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1784.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:09Z",
            "pc:count": 3749296,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100687.3721,
                "count": 3749296,
                "maximum": -100448.6824,
                "minimum": -100944.3824,
                "name": "X",
                "position": 0,
                "stddev": 135.5418079,
                "variance": 18371.58168
              },
              {
                "average": 2364386.272,
                "count": 3749296,
                "maximum": 2364619.234,
                "minimum": 2364145.454,
                "name": "Y",
                "position": 1,
                "stddev": 127.8113634,
                "variance": 16335.74461
              },
              {
                "average": 10.78583842,
                "count": 3749296,
                "maximum": 75.51416799,
                "minimum": 9.83416799,
                "name": "Z",
                "position": 2,
                "stddev": 0.3932557033,
                "variance": 0.1546500482
              },
              {
                "average": 38257.79177,
                "count": 3749296,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11287.70645,
                "variance": 127412316.8
              },
              {
                "average": 1.0000016,
                "count": 3749296,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00126502897,
                "variance": 1.600298296e-06
              },
              {
                "average": 1.000003201,
                "count": 3749296,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001789019695,
                "variance": 3.200591469e-06
              },
              {
                "average": 0.5056474602,
                "count": 3749296,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999681719,
                "variance": 0.2499681729
              },
              {
                "average": 0.0003920736053,
                "count": 3749296,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01979696916,
                "variance": 0.0003919199881
              },
              {
                "average": 1.271653132,
                "count": 3749296,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4819811581,
                "variance": 0.2323058367
              },
              {
                "average": -1.002667345,
                "count": 3749296,
                "maximum": 16.38599968,
                "minimum": -19.77000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78259649,
                "variance": 116.2643871
              },
              {
                "average": 0.5169090411,
                "count": 3749296,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997140692,
                "variance": 0.2497141509
              },
              {
                "average": 424.9098849,
                "count": 3749296,
                "maximum": 463,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.19134333,
                "variance": 330.924972
              },
              {
                "average": 220477757.7,
                "count": 3749296,
                "maximum": 220725449.3,
                "minimum": 220419387.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 118820.7739,
                "variance": 14118376310.0
              },
              {
                "average": 0.5169090411,
                "count": 3749296,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997140692,
                "variance": 0.2497141509
              },
              {
                "average": 0,
                "count": 3749296,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3749296,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3749296,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2262619436,
                "count": 3749296,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4184107111,
                "variance": 0.1750675232
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100944.3824,
              2364145.454,
              9.83416799,
              -100448.6824,
              2364619.234,
              75.51416799
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100944.38235027925,
                    2364145.4535631887,
                    9.834167990343438
                  ],
                  [
                    -100944.38235027925,
                    2364619.233563189,
                    9.834167990343438
                  ],
                  [
                    -100448.68235027924,
                    2364619.233563189,
                    75.51416799034345
                  ],
                  [
                    -100448.68235027924,
                    2364145.4535631887,
                    75.51416799034345
                  ],
                  [
                    -100944.38235027925,
                    2364145.4535631887,
                    9.834167990343438
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:09+00:00",
            "end_time": "2018-09-08T05:23:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2120.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68010500057926,
              71.28784510882869,
              5.477820764195564
            ],
            [
              -156.6806255384046,
              71.29219285695969,
              5.477820764195564
            ],
            [
              -156.6671307346599,
              71.29237620103372,
              14.577820764195565
            ],
            [
              -156.6666128116753,
              71.28802841194127,
              14.577820764195565
            ],
            [
              -156.68010500057926,
              71.28784510882869,
              5.477820764195564
            ]
          ]
        ]
      },
      "bbox": [
        -156.6806255,
        71.28784511,
        5.477820764,
        -156.6666128,
        71.2923762,
        14.57782076
      ],
      "properties": {
        "datetime": "2018-09-08T05:34:42Z",
        "pc:count": 3087006,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98136.61285,
            "count": 3087006,
            "maximum": -97884.43043,
            "minimum": -98380.23043,
            "name": "X",
            "position": 0,
            "stddev": 135.6553664,
            "variance": 18402.37842
          },
          {
            "average": 2367801.486,
            "count": 3087006,
            "maximum": 2368037.922,
            "minimum": 2367564.282,
            "name": "Y",
            "position": 1,
            "stddev": 128.7583681,
            "variance": 16578.71735
          },
          {
            "average": 6.040522699,
            "count": 3087006,
            "maximum": 14.57782076,
            "minimum": 5.477820764,
            "name": "Z",
            "position": 2,
            "stddev": 0.3058815459,
            "variance": 0.0935635201
          },
          {
            "average": 36741.43852,
            "count": 3087006,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11710.91989,
            "variance": 137145644.8
          },
          {
            "average": 1.00026239,
            "count": 3087006,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0162960358,
            "variance": 0.0002655607827
          },
          {
            "average": 1.000524132,
            "count": 3087006,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02309926528,
            "variance": 0.0005335760563
          },
          {
            "average": 0.4995270498,
            "count": 3087006,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998573,
            "variance": 0.2499998573
          },
          {
            "average": 0.0004638798888,
            "count": 3087006,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02153287845,
            "variance": 0.0004636648544
          },
          {
            "average": 1.304926845,
            "count": 3087006,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4643148181,
            "variance": 0.2155882503
          },
          {
            "average": -0.6199314267,
            "count": 3087006,
            "maximum": 16.37400055,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39143627,
            "variance": 107.9819477
          },
          {
            "average": 0.4635536828,
            "count": 3087006,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986699776,
            "variance": 0.2486717465
          },
          {
            "average": 413.3120195,
            "count": 3087006,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9601199778,
            "variance": 0.9218303718
          },
          {
            "average": 220419124.6,
            "count": 3087006,
            "maximum": 220420082.9,
            "minimum": 220417909.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.5180879,
            "variance": 276169.2607
          },
          {
            "average": 0.4635536828,
            "count": 3087006,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986699776,
            "variance": 0.2486717465
          },
          {
            "average": 0,
            "count": 3087006,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3087006,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3087006,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.228983034,
            "count": 3087006,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4201783685,
            "variance": 0.1765498614
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98380.23043,
          2367564.282,
          5.477820764,
          -97884.43043,
          2368037.922,
          14.57782076
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98380.23043145286,
                2367564.282445056,
                5.477820764195564
              ],
              [
                -98380.23043145286,
                2368037.9224450556,
                5.477820764195564
              ],
              [
                -97884.43043145287,
                2368037.9224450556,
                14.577820764195565
              ],
              [
                -97884.43043145287,
                2367564.282445056,
                14.577820764195565
              ],
              [
                -98380.23043145286,
                2367564.282445056,
                5.477820764195564
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:34:42+00:00",
        "end_time": "2018-09-08T04:58:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2120.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2120.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2120.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2120.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6806255,
            71.28784511,
            5.477820764,
            -156.6666128,
            71.2923762,
            14.57782076
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68010500057926,
                  71.28784510882869,
                  5.477820764195564
                ],
                [
                  -156.6806255384046,
                  71.29219285695969,
                  5.477820764195564
                ],
                [
                  -156.6671307346599,
                  71.29237620103372,
                  14.577820764195565
                ],
                [
                  -156.6666128116753,
                  71.28802841194127,
                  14.577820764195565
                ],
                [
                  -156.68010500057926,
                  71.28784510882869,
                  5.477820764195564
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2120.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2120.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:34:42Z",
            "pc:count": 3087006,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98136.61285,
                "count": 3087006,
                "maximum": -97884.43043,
                "minimum": -98380.23043,
                "name": "X",
                "position": 0,
                "stddev": 135.6553664,
                "variance": 18402.37842
              },
              {
                "average": 2367801.486,
                "count": 3087006,
                "maximum": 2368037.922,
                "minimum": 2367564.282,
                "name": "Y",
                "position": 1,
                "stddev": 128.7583681,
                "variance": 16578.71735
              },
              {
                "average": 6.040522699,
                "count": 3087006,
                "maximum": 14.57782076,
                "minimum": 5.477820764,
                "name": "Z",
                "position": 2,
                "stddev": 0.3058815459,
                "variance": 0.0935635201
              },
              {
                "average": 36741.43852,
                "count": 3087006,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11710.91989,
                "variance": 137145644.8
              },
              {
                "average": 1.00026239,
                "count": 3087006,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0162960358,
                "variance": 0.0002655607827
              },
              {
                "average": 1.000524132,
                "count": 3087006,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02309926528,
                "variance": 0.0005335760563
              },
              {
                "average": 0.4995270498,
                "count": 3087006,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998573,
                "variance": 0.2499998573
              },
              {
                "average": 0.0004638798888,
                "count": 3087006,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02153287845,
                "variance": 0.0004636648544
              },
              {
                "average": 1.304926845,
                "count": 3087006,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4643148181,
                "variance": 0.2155882503
              },
              {
                "average": -0.6199314267,
                "count": 3087006,
                "maximum": 16.37400055,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39143627,
                "variance": 107.9819477
              },
              {
                "average": 0.4635536828,
                "count": 3087006,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986699776,
                "variance": 0.2486717465
              },
              {
                "average": 413.3120195,
                "count": 3087006,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9601199778,
                "variance": 0.9218303718
              },
              {
                "average": 220419124.6,
                "count": 3087006,
                "maximum": 220420082.9,
                "minimum": 220417909.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.5180879,
                "variance": 276169.2607
              },
              {
                "average": 0.4635536828,
                "count": 3087006,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986699776,
                "variance": 0.2486717465
              },
              {
                "average": 0,
                "count": 3087006,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3087006,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3087006,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.228983034,
                "count": 3087006,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4201783685,
                "variance": 0.1765498614
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98380.23043,
              2367564.282,
              5.477820764,
              -97884.43043,
              2368037.922,
              14.57782076
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98380.23043145286,
                    2367564.282445056,
                    5.477820764195564
                  ],
                  [
                    -98380.23043145286,
                    2368037.9224450556,
                    5.477820764195564
                  ],
                  [
                    -97884.43043145287,
                    2368037.9224450556,
                    14.577820764195565
                  ],
                  [
                    -97884.43043145287,
                    2367564.282445056,
                    14.577820764195565
                  ],
                  [
                    -98380.23043145286,
                    2367564.282445056,
                    5.477820764195564
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:34:42+00:00",
            "end_time": "2018-09-08T04:58:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1880.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83472487285565,
              71.26427332505045,
              7.841707563949066
            ],
            [
              -156.83527477510768,
              71.26861941207095,
              7.841707563949066
            ],
            [
              -156.82180252743612,
              71.2688132222886,
              11.901707563949067
            ],
            [
              -156.82125523182376,
              71.26446709204373,
              11.901707563949067
            ],
            [
              -156.83472487285565,
              71.26427332505045,
              7.841707563949066
            ]
          ]
        ]
      },
      "bbox": [
        -156.8352748,
        71.26427333,
        7.841707564,
        -156.8212552,
        71.26881322,
        11.90170756
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:12Z",
        "pc:count": 3155659,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103916.1402,
            "count": 3155659,
            "maximum": -103666.559,
            "minimum": -104162.099,
            "name": "X",
            "position": 0,
            "stddev": 134.5743698,
            "variance": 18110.261
          },
          {
            "average": 2365472.234,
            "count": 3155659,
            "maximum": 2365709.814,
            "minimum": 2365236.234,
            "name": "Y",
            "position": 1,
            "stddev": 130.8145046,
            "variance": 17112.43463
          },
          {
            "average": 9.389914595,
            "count": 3155659,
            "maximum": 11.90170756,
            "minimum": 7.841707564,
            "name": "Z",
            "position": 2,
            "stddev": 0.5400595504,
            "variance": 0.2916643179
          },
          {
            "average": 42633.85849,
            "count": 3155659,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 9923.313282,
            "variance": 98472146.49
          },
          {
            "average": 1.000003803,
            "count": 3155659,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001950045894,
            "variance": 3.802678987e-06
          },
          {
            "average": 1.000007605,
            "count": 3155659,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002757776107,
            "variance": 7.605329054e-06
          },
          {
            "average": 0.5022697319,
            "count": 3155659,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999949275,
            "variance": 0.2499949275
          },
          {
            "average": 0.0004110076532,
            "count": 3155659,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02026916022,
            "variance": 0.0004108388561
          },
          {
            "average": 1.327789853,
            "count": 3155659,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6388864348,
            "variance": 0.4081758766
          },
          {
            "average": 1.321622711,
            "count": 3155659,
            "maximum": 16.4279995,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60362835,
            "variance": 112.4369342
          },
          {
            "average": 0.5427382997,
            "count": 3155659,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981701681,
            "variance": 0.2481735164
          },
          {
            "average": 408.3567388,
            "count": 3155659,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9837439309,
            "variance": 0.9677521216
          },
          {
            "average": 220416385.4,
            "count": 3155659,
            "maximum": 220417172.3,
            "minimum": 220415733.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 547.2163718,
            "variance": 299445.7576
          },
          {
            "average": 0.5427382997,
            "count": 3155659,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981701681,
            "variance": 0.2481735164
          },
          {
            "average": 0,
            "count": 3155659,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3155659,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3155659,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2652723251,
            "count": 3155659,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4414781766,
            "variance": 0.1949029804
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104162.099,
          2365236.234,
          7.841707564,
          -103666.559,
          2365709.814,
          11.90170756
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104162.09897532487,
                2365236.23412395,
                7.841707563949066
              ],
              [
                -104162.09897532487,
                2365709.81412395,
                7.841707563949066
              ],
              [
                -103666.55897532486,
                2365709.81412395,
                11.901707563949067
              ],
              [
                -103666.55897532486,
                2365236.23412395,
                11.901707563949067
              ],
              [
                -104162.09897532487,
                2365236.23412395,
                7.841707563949066
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:12+00:00",
        "end_time": "2018-09-08T04:22:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1880.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1880.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1880.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1880.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8352748,
            71.26427333,
            7.841707564,
            -156.8212552,
            71.26881322,
            11.90170756
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83472487285565,
                  71.26427332505045,
                  7.841707563949066
                ],
                [
                  -156.83527477510768,
                  71.26861941207095,
                  7.841707563949066
                ],
                [
                  -156.82180252743612,
                  71.2688132222886,
                  11.901707563949067
                ],
                [
                  -156.82125523182376,
                  71.26446709204373,
                  11.901707563949067
                ],
                [
                  -156.83472487285565,
                  71.26427332505045,
                  7.841707563949066
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1880.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1880.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:12Z",
            "pc:count": 3155659,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103916.1402,
                "count": 3155659,
                "maximum": -103666.559,
                "minimum": -104162.099,
                "name": "X",
                "position": 0,
                "stddev": 134.5743698,
                "variance": 18110.261
              },
              {
                "average": 2365472.234,
                "count": 3155659,
                "maximum": 2365709.814,
                "minimum": 2365236.234,
                "name": "Y",
                "position": 1,
                "stddev": 130.8145046,
                "variance": 17112.43463
              },
              {
                "average": 9.389914595,
                "count": 3155659,
                "maximum": 11.90170756,
                "minimum": 7.841707564,
                "name": "Z",
                "position": 2,
                "stddev": 0.5400595504,
                "variance": 0.2916643179
              },
              {
                "average": 42633.85849,
                "count": 3155659,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 9923.313282,
                "variance": 98472146.49
              },
              {
                "average": 1.000003803,
                "count": 3155659,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001950045894,
                "variance": 3.802678987e-06
              },
              {
                "average": 1.000007605,
                "count": 3155659,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002757776107,
                "variance": 7.605329054e-06
              },
              {
                "average": 0.5022697319,
                "count": 3155659,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999949275,
                "variance": 0.2499949275
              },
              {
                "average": 0.0004110076532,
                "count": 3155659,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02026916022,
                "variance": 0.0004108388561
              },
              {
                "average": 1.327789853,
                "count": 3155659,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6388864348,
                "variance": 0.4081758766
              },
              {
                "average": 1.321622711,
                "count": 3155659,
                "maximum": 16.4279995,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60362835,
                "variance": 112.4369342
              },
              {
                "average": 0.5427382997,
                "count": 3155659,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981701681,
                "variance": 0.2481735164
              },
              {
                "average": 408.3567388,
                "count": 3155659,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9837439309,
                "variance": 0.9677521216
              },
              {
                "average": 220416385.4,
                "count": 3155659,
                "maximum": 220417172.3,
                "minimum": 220415733.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 547.2163718,
                "variance": 299445.7576
              },
              {
                "average": 0.5427382997,
                "count": 3155659,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981701681,
                "variance": 0.2481735164
              },
              {
                "average": 0,
                "count": 3155659,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3155659,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3155659,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2652723251,
                "count": 3155659,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4414781766,
                "variance": 0.1949029804
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104162.099,
              2365236.234,
              7.841707564,
              -103666.559,
              2365709.814,
              11.90170756
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104162.09897532487,
                    2365236.23412395,
                    7.841707563949066
                  ],
                  [
                    -104162.09897532487,
                    2365709.81412395,
                    7.841707563949066
                  ],
                  [
                    -103666.55897532486,
                    2365709.81412395,
                    11.901707563949067
                  ],
                  [
                    -103666.55897532486,
                    2365236.23412395,
                    11.901707563949067
                  ],
                  [
                    -104162.09897532487,
                    2365236.23412395,
                    7.841707563949066
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:12+00:00",
            "end_time": "2018-09-08T04:22:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2084.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73142017414227,
              71.28409870263093,
              3.725651181271321
            ],
            [
              -156.73195058425623,
              71.28844620392013,
              3.725651181271321
            ],
            [
              -156.71845682781245,
              71.28863308325009,
              9.96565118127132
            ],
            [
              -156.7179290316523,
              71.28428554022102,
              9.96565118127132
            ],
            [
              -156.73142017414227,
              71.28409870263093,
              3.725651181271321
            ]
          ]
        ]
      },
      "bbox": [
        -156.7319506,
        71.2840987,
        3.725651181,
        -156.717929,
        71.28863308,
        9.965651181
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:18Z",
        "pc:count": 2860610,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100016.1696,
            "count": 2860610,
            "maximum": -99783.74324,
            "minimum": -100279.6032,
            "name": "X",
            "position": 0,
            "stddev": 125.583822,
            "variance": 15771.29634
          },
          {
            "average": 2367480.441,
            "count": 2860610,
            "maximum": 2367707.203,
            "minimum": 2367233.563,
            "name": "Y",
            "position": 1,
            "stddev": 128.7901321,
            "variance": 16586.89813
          },
          {
            "average": 7.62810707,
            "count": 2860610,
            "maximum": 9.965651181,
            "minimum": 3.725651181,
            "name": "Z",
            "position": 2,
            "stddev": 1.428599088,
            "variance": 2.040895355
          },
          {
            "average": 44590.00758,
            "count": 2860610,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10570.48489,
            "variance": 111735150.8
          },
          {
            "average": 1,
            "count": 2860610,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2860610,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5021324123,
            "count": 2860610,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999955402,
            "variance": 0.2499955402
          },
          {
            "average": 0.0004530502236,
            "count": 2860610,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02128015807,
            "variance": 0.0004528451274
          },
          {
            "average": 1.494721406,
            "count": 2860610,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.318580233,
            "variance": 1.73865383
          },
          {
            "average": 0.978518729,
            "count": 2860610,
            "maximum": 16.35000038,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32637232,
            "variance": 106.6339654
          },
          {
            "average": 0.5233509636,
            "count": 2860610,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994545222,
            "variance": 0.2494548197
          },
          {
            "average": 410.7295968,
            "count": 2860610,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9536643377,
            "variance": 0.909475669
          },
          {
            "average": 220417705.2,
            "count": 2860610,
            "maximum": 220419038,
            "minimum": 220416812.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.7669766,
            "variance": 276430.9137
          },
          {
            "average": 0.5233509636,
            "count": 2860610,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994545222,
            "variance": 0.2494548197
          },
          {
            "average": 0,
            "count": 2860610,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2860610,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2860610,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2402239383,
            "count": 2860610,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4272194536,
            "variance": 0.1825164615
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100279.6032,
          2367233.563,
          3.725651181,
          -99783.74324,
          2367707.203,
          9.965651181
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100279.6032409598,
                2367233.5630181595,
                3.725651181271321
              ],
              [
                -100279.6032409598,
                2367707.203018159,
                3.725651181271321
              ],
              [
                -99783.74324095981,
                2367707.203018159,
                9.96565118127132
              ],
              [
                -99783.74324095981,
                2367233.5630181595,
                9.96565118127132
              ],
              [
                -100279.6032409598,
                2367233.5630181595,
                3.725651181271321
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:18+00:00",
        "end_time": "2018-09-08T04:40:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2084.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2084.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2084.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2084.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7319506,
            71.2840987,
            3.725651181,
            -156.717929,
            71.28863308,
            9.965651181
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73142017414227,
                  71.28409870263093,
                  3.725651181271321
                ],
                [
                  -156.73195058425623,
                  71.28844620392013,
                  3.725651181271321
                ],
                [
                  -156.71845682781245,
                  71.28863308325009,
                  9.96565118127132
                ],
                [
                  -156.7179290316523,
                  71.28428554022102,
                  9.96565118127132
                ],
                [
                  -156.73142017414227,
                  71.28409870263093,
                  3.725651181271321
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2084.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2084.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:18Z",
            "pc:count": 2860610,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100016.1696,
                "count": 2860610,
                "maximum": -99783.74324,
                "minimum": -100279.6032,
                "name": "X",
                "position": 0,
                "stddev": 125.583822,
                "variance": 15771.29634
              },
              {
                "average": 2367480.441,
                "count": 2860610,
                "maximum": 2367707.203,
                "minimum": 2367233.563,
                "name": "Y",
                "position": 1,
                "stddev": 128.7901321,
                "variance": 16586.89813
              },
              {
                "average": 7.62810707,
                "count": 2860610,
                "maximum": 9.965651181,
                "minimum": 3.725651181,
                "name": "Z",
                "position": 2,
                "stddev": 1.428599088,
                "variance": 2.040895355
              },
              {
                "average": 44590.00758,
                "count": 2860610,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10570.48489,
                "variance": 111735150.8
              },
              {
                "average": 1,
                "count": 2860610,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2860610,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5021324123,
                "count": 2860610,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999955402,
                "variance": 0.2499955402
              },
              {
                "average": 0.0004530502236,
                "count": 2860610,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02128015807,
                "variance": 0.0004528451274
              },
              {
                "average": 1.494721406,
                "count": 2860610,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.318580233,
                "variance": 1.73865383
              },
              {
                "average": 0.978518729,
                "count": 2860610,
                "maximum": 16.35000038,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32637232,
                "variance": 106.6339654
              },
              {
                "average": 0.5233509636,
                "count": 2860610,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994545222,
                "variance": 0.2494548197
              },
              {
                "average": 410.7295968,
                "count": 2860610,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9536643377,
                "variance": 0.909475669
              },
              {
                "average": 220417705.2,
                "count": 2860610,
                "maximum": 220419038,
                "minimum": 220416812.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.7669766,
                "variance": 276430.9137
              },
              {
                "average": 0.5233509636,
                "count": 2860610,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994545222,
                "variance": 0.2494548197
              },
              {
                "average": 0,
                "count": 2860610,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2860610,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2860610,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2402239383,
                "count": 2860610,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4272194536,
                "variance": 0.1825164615
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100279.6032,
              2367233.563,
              3.725651181,
              -99783.74324,
              2367707.203,
              9.965651181
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100279.6032409598,
                    2367233.5630181595,
                    3.725651181271321
                  ],
                  [
                    -100279.6032409598,
                    2367707.203018159,
                    3.725651181271321
                  ],
                  [
                    -99783.74324095981,
                    2367707.203018159,
                    9.96565118127132
                  ],
                  [
                    -99783.74324095981,
                    2367233.5630181595,
                    9.96565118127132
                  ],
                  [
                    -100279.6032409598,
                    2367233.5630181595,
                    3.725651181271321
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:18+00:00",
            "end_time": "2018-09-08T04:40:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2171.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76891939867292,
              71.2966440027727,
              -11.041908823255064
            ],
            [
              -156.76945731963,
              71.3009912197579,
              -11.041908823255064
            ],
            [
              -156.75595958421366,
              71.30118063968345,
              32.83809117674494
            ],
            [
              -156.75542427893114,
              71.29683338036303,
              32.83809117674494
            ],
            [
              -156.76891939867292,
              71.2966440027727,
              -11.041908823255064
            ]
          ]
        ]
      },
      "bbox": [
        -156.7694573,
        71.296644,
        -11.04190882,
        -156.7554243,
        71.30118064,
        32.83809118
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:15Z",
        "pc:count": 2876847,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101350.3337,
            "count": 2876847,
            "maximum": -101102.8746,
            "minimum": -101598.6146,
            "name": "X",
            "position": 0,
            "stddev": 136.8398469,
            "variance": 18725.14371
          },
          {
            "average": 2368885.315,
            "count": 2876847,
            "maximum": 2369128.526,
            "minimum": 2368654.946,
            "name": "Y",
            "position": 1,
            "stddev": 129.5263778,
            "variance": 16777.08253
          },
          {
            "average": 7.417885542,
            "count": 2876847,
            "maximum": 32.83809118,
            "minimum": -11.04190882,
            "name": "Z",
            "position": 2,
            "stddev": 2.362921269,
            "variance": 5.583396925
          },
          {
            "average": 32694.06185,
            "count": 2876847,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13478.20302,
            "variance": 181661956.6
          },
          {
            "average": 1.039102879,
            "count": 2876847,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1976207226,
            "variance": 0.03905395
          },
          {
            "average": 1.078191854,
            "count": 2876847,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2766116791,
            "variance": 0.076514021
          },
          {
            "average": 0.4976559407,
            "count": 2876847,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999945923,
            "variance": 0.2499945923
          },
          {
            "average": 0.0004567500461,
            "count": 2876847,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02136683374,
            "variance": 0.0004565415842
          },
          {
            "average": 2.11161247,
            "count": 2876847,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.716996972,
            "variance": 2.9480786
          },
          {
            "average": 0.2170284325,
            "count": 2876847,
            "maximum": 16.26600075,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.13700822,
            "variance": 102.7589356
          },
          {
            "average": 0.4529132067,
            "count": 2876847,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4977779827,
            "variance": 0.24778292
          },
          {
            "average": 405.5679019,
            "count": 2876847,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9238907989,
            "variance": 0.8535742083
          },
          {
            "average": 220414802.4,
            "count": 2876847,
            "maximum": 220415675.6,
            "minimum": 220413844.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.0359525,
            "variance": 284127.3266
          },
          {
            "average": 0.4529132067,
            "count": 2876847,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4977779827,
            "variance": 0.24778292
          },
          {
            "average": 0,
            "count": 2876847,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2876847,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2876847,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2086722026,
            "count": 2876847,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4063596583,
            "variance": 0.1651281719
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101598.6146,
          2368654.946,
          -11.04190882,
          -101102.8746,
          2369128.526,
          32.83809118
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101598.61460398161,
                2368654.9460998066,
                -11.041908823255064
              ],
              [
                -101598.61460398161,
                2369128.5260998067,
                -11.041908823255064
              ],
              [
                -101102.87460398162,
                2369128.5260998067,
                32.83809117674494
              ],
              [
                -101102.87460398162,
                2368654.9460998066,
                32.83809117674494
              ],
              [
                -101598.61460398161,
                2368654.9460998066,
                -11.041908823255064
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:15+00:00",
        "end_time": "2018-09-08T03:50:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2171.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2171.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2171.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2171.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7694573,
            71.296644,
            -11.04190882,
            -156.7554243,
            71.30118064,
            32.83809118
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76891939867292,
                  71.2966440027727,
                  -11.041908823255064
                ],
                [
                  -156.76945731963,
                  71.3009912197579,
                  -11.041908823255064
                ],
                [
                  -156.75595958421366,
                  71.30118063968345,
                  32.83809117674494
                ],
                [
                  -156.75542427893114,
                  71.29683338036303,
                  32.83809117674494
                ],
                [
                  -156.76891939867292,
                  71.2966440027727,
                  -11.041908823255064
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2171.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2171.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:15Z",
            "pc:count": 2876847,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101350.3337,
                "count": 2876847,
                "maximum": -101102.8746,
                "minimum": -101598.6146,
                "name": "X",
                "position": 0,
                "stddev": 136.8398469,
                "variance": 18725.14371
              },
              {
                "average": 2368885.315,
                "count": 2876847,
                "maximum": 2369128.526,
                "minimum": 2368654.946,
                "name": "Y",
                "position": 1,
                "stddev": 129.5263778,
                "variance": 16777.08253
              },
              {
                "average": 7.417885542,
                "count": 2876847,
                "maximum": 32.83809118,
                "minimum": -11.04190882,
                "name": "Z",
                "position": 2,
                "stddev": 2.362921269,
                "variance": 5.583396925
              },
              {
                "average": 32694.06185,
                "count": 2876847,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13478.20302,
                "variance": 181661956.6
              },
              {
                "average": 1.039102879,
                "count": 2876847,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1976207226,
                "variance": 0.03905395
              },
              {
                "average": 1.078191854,
                "count": 2876847,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2766116791,
                "variance": 0.076514021
              },
              {
                "average": 0.4976559407,
                "count": 2876847,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999945923,
                "variance": 0.2499945923
              },
              {
                "average": 0.0004567500461,
                "count": 2876847,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02136683374,
                "variance": 0.0004565415842
              },
              {
                "average": 2.11161247,
                "count": 2876847,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.716996972,
                "variance": 2.9480786
              },
              {
                "average": 0.2170284325,
                "count": 2876847,
                "maximum": 16.26600075,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.13700822,
                "variance": 102.7589356
              },
              {
                "average": 0.4529132067,
                "count": 2876847,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4977779827,
                "variance": 0.24778292
              },
              {
                "average": 405.5679019,
                "count": 2876847,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9238907989,
                "variance": 0.8535742083
              },
              {
                "average": 220414802.4,
                "count": 2876847,
                "maximum": 220415675.6,
                "minimum": 220413844.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.0359525,
                "variance": 284127.3266
              },
              {
                "average": 0.4529132067,
                "count": 2876847,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4977779827,
                "variance": 0.24778292
              },
              {
                "average": 0,
                "count": 2876847,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2876847,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2876847,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2086722026,
                "count": 2876847,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4063596583,
                "variance": 0.1651281719
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101598.6146,
              2368654.946,
              -11.04190882,
              -101102.8746,
              2369128.526,
              32.83809118
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101598.61460398161,
                    2368654.9460998066,
                    -11.041908823255064
                  ],
                  [
                    -101598.61460398161,
                    2369128.5260998067,
                    -11.041908823255064
                  ],
                  [
                    -101102.87460398162,
                    2369128.5260998067,
                    32.83809117674494
                  ],
                  [
                    -101102.87460398162,
                    2368654.9460998066,
                    32.83809117674494
                  ],
                  [
                    -101598.61460398161,
                    2368654.9460998066,
                    -11.041908823255064
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:15+00:00",
            "end_time": "2018-09-08T03:50:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1942.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69424440472173,
              71.26744899246135,
              9.877961840264188
            ],
            [
              -156.69476738775376,
              71.2717975744542,
              9.877961840264188
            ],
            [
              -156.68128497769757,
              71.2719818627865,
              20.737961840264187
            ],
            [
              -156.68076460554244,
              71.26763323966185,
              20.737961840264187
            ],
            [
              -156.69424440472173,
              71.26744899246135,
              9.877961840264188
            ]
          ]
        ]
      },
      "bbox": [
        -156.6947674,
        71.26744899,
        9.87796184,
        -156.6807646,
        71.27198186,
        20.73796184
      ],
      "properties": {
        "datetime": "2018-09-11T18:10:56Z",
        "pc:count": 4101609,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98743.58534,
            "count": 4101609,
            "maximum": -98493.22162,
            "minimum": -98989.02162,
            "name": "X",
            "position": 0,
            "stddev": 134.4574833,
            "variance": 18078.81481
          },
          {
            "average": 2365609.987,
            "count": 4101609,
            "maximum": 2365840.599,
            "minimum": 2365366.799,
            "name": "Y",
            "position": 1,
            "stddev": 125.8095961,
            "variance": 15828.05447
          },
          {
            "average": 11.34083462,
            "count": 4101609,
            "maximum": 20.73796184,
            "minimum": 9.87796184,
            "name": "Z",
            "position": 2,
            "stddev": 0.6446693169,
            "variance": 0.4155985281
          },
          {
            "average": 44540.77668,
            "count": 4101609,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 9621.044203,
            "variance": 92564491.56
          },
          {
            "average": 1.000001219,
            "count": 4101609,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001104098098,
            "variance": 1.21903261e-06
          },
          {
            "average": 1.000002438,
            "count": 4101609,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001561429553,
            "variance": 2.438062248e-06
          },
          {
            "average": 0.506699444,
            "count": 4101609,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999551764,
            "variance": 0.2499551784
          },
          {
            "average": 0.0005297920889,
            "count": 4101609,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02301111771,
            "variance": 0.0005295115384
          },
          {
            "average": 1.262834658,
            "count": 4101609,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4403478696,
            "variance": 0.1939062462
          },
          {
            "average": -2.700004186,
            "count": 4101609,
            "maximum": 16.35000038,
            "minimum": -19.90800095,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.28644262,
            "variance": 127.3837871
          },
          {
            "average": 0.4964968626,
            "count": 4101609,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999877888,
            "variance": 0.249987789
          },
          {
            "average": 428.1893523,
            "count": 4101609,
            "maximum": 461,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.05778209,
            "variance": 363.1990582
          },
          {
            "average": 220499149.5,
            "count": 4101609,
            "maximum": 220724656.3,
            "minimum": 220420108.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 132576.6234,
            "variance": 17576561080.0
          },
          {
            "average": 0.4964968626,
            "count": 4101609,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999877888,
            "variance": 0.249987789
          },
          {
            "average": 0,
            "count": 4101609,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4101609,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4101609,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.240317885,
            "count": 4101609,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4272765424,
            "variance": 0.1825652437
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98989.02162,
          2365366.799,
          9.87796184,
          -98493.22162,
          2365840.599,
          20.73796184
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98989.02161565126,
                2365366.799187324,
                9.877961840264188
              ],
              [
                -98989.02161565126,
                2365840.599187324,
                9.877961840264188
              ],
              [
                -98493.22161565127,
                2365840.599187324,
                20.737961840264187
              ],
              [
                -98493.22161565127,
                2365366.799187324,
                20.737961840264187
              ],
              [
                -98989.02161565126,
                2365366.799187324,
                9.877961840264188
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:10:56+00:00",
        "end_time": "2018-09-08T05:35:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1942.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1942.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1942.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1942.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6947674,
            71.26744899,
            9.87796184,
            -156.6807646,
            71.27198186,
            20.73796184
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69424440472173,
                  71.26744899246135,
                  9.877961840264188
                ],
                [
                  -156.69476738775376,
                  71.2717975744542,
                  9.877961840264188
                ],
                [
                  -156.68128497769757,
                  71.2719818627865,
                  20.737961840264187
                ],
                [
                  -156.68076460554244,
                  71.26763323966185,
                  20.737961840264187
                ],
                [
                  -156.69424440472173,
                  71.26744899246135,
                  9.877961840264188
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1942.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1942.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:10:56Z",
            "pc:count": 4101609,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98743.58534,
                "count": 4101609,
                "maximum": -98493.22162,
                "minimum": -98989.02162,
                "name": "X",
                "position": 0,
                "stddev": 134.4574833,
                "variance": 18078.81481
              },
              {
                "average": 2365609.987,
                "count": 4101609,
                "maximum": 2365840.599,
                "minimum": 2365366.799,
                "name": "Y",
                "position": 1,
                "stddev": 125.8095961,
                "variance": 15828.05447
              },
              {
                "average": 11.34083462,
                "count": 4101609,
                "maximum": 20.73796184,
                "minimum": 9.87796184,
                "name": "Z",
                "position": 2,
                "stddev": 0.6446693169,
                "variance": 0.4155985281
              },
              {
                "average": 44540.77668,
                "count": 4101609,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 9621.044203,
                "variance": 92564491.56
              },
              {
                "average": 1.000001219,
                "count": 4101609,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001104098098,
                "variance": 1.21903261e-06
              },
              {
                "average": 1.000002438,
                "count": 4101609,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001561429553,
                "variance": 2.438062248e-06
              },
              {
                "average": 0.506699444,
                "count": 4101609,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999551764,
                "variance": 0.2499551784
              },
              {
                "average": 0.0005297920889,
                "count": 4101609,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02301111771,
                "variance": 0.0005295115384
              },
              {
                "average": 1.262834658,
                "count": 4101609,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4403478696,
                "variance": 0.1939062462
              },
              {
                "average": -2.700004186,
                "count": 4101609,
                "maximum": 16.35000038,
                "minimum": -19.90800095,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.28644262,
                "variance": 127.3837871
              },
              {
                "average": 0.4964968626,
                "count": 4101609,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999877888,
                "variance": 0.249987789
              },
              {
                "average": 428.1893523,
                "count": 4101609,
                "maximum": 461,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.05778209,
                "variance": 363.1990582
              },
              {
                "average": 220499149.5,
                "count": 4101609,
                "maximum": 220724656.3,
                "minimum": 220420108.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 132576.6234,
                "variance": 17576561080.0
              },
              {
                "average": 0.4964968626,
                "count": 4101609,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999877888,
                "variance": 0.249987789
              },
              {
                "average": 0,
                "count": 4101609,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4101609,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4101609,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.240317885,
                "count": 4101609,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4272765424,
                "variance": 0.1825652437
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98989.02162,
              2365366.799,
              9.87796184,
              -98493.22162,
              2365840.599,
              20.73796184
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98989.02161565126,
                    2365366.799187324,
                    9.877961840264188
                  ],
                  [
                    -98989.02161565126,
                    2365840.599187324,
                    9.877961840264188
                  ],
                  [
                    -98493.22161565127,
                    2365840.599187324,
                    20.737961840264187
                  ],
                  [
                    -98493.22161565127,
                    2365366.799187324,
                    20.737961840264187
                  ],
                  [
                    -98989.02161565126,
                    2365366.799187324,
                    9.877961840264188
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:10:56+00:00",
            "end_time": "2018-09-08T05:35:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1674.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79749642275937,
              71.24764499811762,
              9.417385612609646
            ],
            [
              -156.79803875098892,
              71.25199107088922,
              9.417385612609646
            ],
            [
              -156.78457943085562,
              71.25218226401509,
              27.697385612609647
            ],
            [
              -156.78403970523982,
              71.24783614864381,
              27.697385612609647
            ],
            [
              -156.79749642275937,
              71.24764499811762,
              9.417385612609646
            ]
          ]
        ]
      },
      "bbox": [
        -156.7980388,
        71.247645,
        9.417385613,
        -156.7840397,
        71.25218226,
        27.69738561
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:52Z",
        "pc:count": 2551631,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102621.7283,
            "count": 2551631,
            "maximum": -102375.7717,
            "minimum": -102871.1917,
            "name": "X",
            "position": 0,
            "stddev": 131.3152223,
            "variance": 17243.68761
          },
          {
            "average": 2363585.865,
            "count": 2551631,
            "maximum": 2363843.037,
            "minimum": 2363369.417,
            "name": "Y",
            "position": 1,
            "stddev": 130.4061751,
            "variance": 17005.7705
          },
          {
            "average": 9.868808079,
            "count": 2551631,
            "maximum": 27.69738561,
            "minimum": 9.417385613,
            "name": "Z",
            "position": 2,
            "stddev": 0.1517821177,
            "variance": 0.02303781124
          },
          {
            "average": 29822.71131,
            "count": 2551631,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12968.6099,
            "variance": 168184842.8
          },
          {
            "average": 1.00000196,
            "count": 2551631,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001399831386,
            "variance": 1.959527911e-06
          },
          {
            "average": 1.000003919,
            "count": 2551631,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001979658592,
            "variance": 3.919048142e-06
          },
          {
            "average": 0.5050475559,
            "count": 2551631,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999746195,
            "variance": 0.2499746201
          },
          {
            "average": 0.0005474929565,
            "count": 2551631,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02339216583,
            "variance": 0.0005471934224
          },
          {
            "average": 1.977582966,
            "count": 2551631,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.339382123,
            "variance": 5.472708718
          },
          {
            "average": -0.1703410686,
            "count": 2551631,
            "maximum": 16.5359993,
            "minimum": -19.67399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83874741,
            "variance": 117.4784454
          },
          {
            "average": 0.5324178927,
            "count": 2551631,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989480712,
            "variance": 0.2489491778
          },
          {
            "average": 418.404952,
            "count": 2551631,
            "maximum": 465,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.27030858,
            "variance": 176.1010899
          },
          {
            "average": 220442740.6,
            "count": 2551631,
            "maximum": 220726272.1,
            "minimum": 220419108.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 80557.88728,
            "variance": 6489573204
          },
          {
            "average": 0.5324178927,
            "count": 2551631,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989480712,
            "variance": 0.2489491778
          },
          {
            "average": 0,
            "count": 2551631,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2551631,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2551631,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2540912068,
            "count": 2551631,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4353492158,
            "variance": 0.1895289397
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102871.1917,
          2363369.417,
          9.417385613,
          -102375.7717,
          2363843.037,
          27.69738561
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102871.19172998324,
                2363369.417197256,
                9.417385612609646
              ],
              [
                -102871.19172998324,
                2363843.037197256,
                9.417385612609646
              ],
              [
                -102375.77172998323,
                2363843.037197256,
                27.697385612609647
              ],
              [
                -102375.77172998323,
                2363369.417197256,
                27.697385612609647
              ],
              [
                -102871.19172998324,
                2363369.417197256,
                9.417385612609646
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:52+00:00",
        "end_time": "2018-09-08T05:18:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1674.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1674.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1674.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1674.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7980388,
            71.247645,
            9.417385613,
            -156.7840397,
            71.25218226,
            27.69738561
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79749642275937,
                  71.24764499811762,
                  9.417385612609646
                ],
                [
                  -156.79803875098892,
                  71.25199107088922,
                  9.417385612609646
                ],
                [
                  -156.78457943085562,
                  71.25218226401509,
                  27.697385612609647
                ],
                [
                  -156.78403970523982,
                  71.24783614864381,
                  27.697385612609647
                ],
                [
                  -156.79749642275937,
                  71.24764499811762,
                  9.417385612609646
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1674.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1674.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:52Z",
            "pc:count": 2551631,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102621.7283,
                "count": 2551631,
                "maximum": -102375.7717,
                "minimum": -102871.1917,
                "name": "X",
                "position": 0,
                "stddev": 131.3152223,
                "variance": 17243.68761
              },
              {
                "average": 2363585.865,
                "count": 2551631,
                "maximum": 2363843.037,
                "minimum": 2363369.417,
                "name": "Y",
                "position": 1,
                "stddev": 130.4061751,
                "variance": 17005.7705
              },
              {
                "average": 9.868808079,
                "count": 2551631,
                "maximum": 27.69738561,
                "minimum": 9.417385613,
                "name": "Z",
                "position": 2,
                "stddev": 0.1517821177,
                "variance": 0.02303781124
              },
              {
                "average": 29822.71131,
                "count": 2551631,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12968.6099,
                "variance": 168184842.8
              },
              {
                "average": 1.00000196,
                "count": 2551631,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001399831386,
                "variance": 1.959527911e-06
              },
              {
                "average": 1.000003919,
                "count": 2551631,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001979658592,
                "variance": 3.919048142e-06
              },
              {
                "average": 0.5050475559,
                "count": 2551631,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999746195,
                "variance": 0.2499746201
              },
              {
                "average": 0.0005474929565,
                "count": 2551631,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02339216583,
                "variance": 0.0005471934224
              },
              {
                "average": 1.977582966,
                "count": 2551631,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.339382123,
                "variance": 5.472708718
              },
              {
                "average": -0.1703410686,
                "count": 2551631,
                "maximum": 16.5359993,
                "minimum": -19.67399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83874741,
                "variance": 117.4784454
              },
              {
                "average": 0.5324178927,
                "count": 2551631,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989480712,
                "variance": 0.2489491778
              },
              {
                "average": 418.404952,
                "count": 2551631,
                "maximum": 465,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.27030858,
                "variance": 176.1010899
              },
              {
                "average": 220442740.6,
                "count": 2551631,
                "maximum": 220726272.1,
                "minimum": 220419108.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 80557.88728,
                "variance": 6489573204
              },
              {
                "average": 0.5324178927,
                "count": 2551631,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989480712,
                "variance": 0.2489491778
              },
              {
                "average": 0,
                "count": 2551631,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2551631,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2551631,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2540912068,
                "count": 2551631,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4353492158,
                "variance": 0.1895289397
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102871.1917,
              2363369.417,
              9.417385613,
              -102375.7717,
              2363843.037,
              27.69738561
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102871.19172998324,
                    2363369.417197256,
                    9.417385612609646
                  ],
                  [
                    -102871.19172998324,
                    2363843.037197256,
                    9.417385612609646
                  ],
                  [
                    -102375.77172998323,
                    2363843.037197256,
                    27.697385612609647
                  ],
                  [
                    -102375.77172998323,
                    2363369.417197256,
                    27.697385612609647
                  ],
                  [
                    -102871.19172998324,
                    2363369.417197256,
                    9.417385612609646
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:52+00:00",
            "end_time": "2018-09-08T05:18:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1826.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.87320630210456,
              71.26040853324126,
              0.880996104563768
            ],
            [
              -156.87375469449378,
              71.26468520642983,
              0.880996104563768
            ],
            [
              -156.86028623211956,
              71.26488163072999,
              13.10099610456377
            ],
            [
              -156.85974040351476,
              71.26060491444333,
              13.10099610456377
            ],
            [
              -156.87320630210456,
              71.26040853324126,
              0.880996104563768
            ]
          ]
        ]
      },
      "bbox": [
        -156.8737547,
        71.26040853,
        0.8809961046,
        -156.8597404,
        71.26488163,
        13.1009961
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:53Z",
        "pc:count": 1547673,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105336.7627,
            "count": 1547673,
            "maximum": -105097.9227,
            "minimum": -105593.4227,
            "name": "X",
            "position": 0,
            "stddev": 131.7540429,
            "variance": 17359.12782
          },
          {
            "average": 2365103.306,
            "count": 1547673,
            "maximum": 2365342.671,
            "minimum": 2364876.631,
            "name": "Y",
            "position": 1,
            "stddev": 125.0663279,
            "variance": 15641.58637
          },
          {
            "average": 1.188760852,
            "count": 1547673,
            "maximum": 13.1009961,
            "minimum": 0.8809961046,
            "name": "Z",
            "position": 2,
            "stddev": 0.07072677267,
            "variance": 0.005002276372
          },
          {
            "average": 14416.41855,
            "count": 1547673,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11204.29785,
            "variance": 125536290.2
          },
          {
            "average": 1,
            "count": 1547673,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1547673,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5071878879,
            "count": 1547673,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999484931,
            "variance": 0.2499484958
          },
          {
            "average": 0.0007391742312,
            "count": 1547673,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02717771753,
            "variance": 0.00073862833
          },
          {
            "average": 7.630100157,
            "count": 1547673,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.481093283,
            "variance": 6.155823881
          },
          {
            "average": -2.015736258,
            "count": 1547673,
            "maximum": 16.5,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.230319873,
            "variance": 52.27752546
          },
          {
            "average": 0.4883938661,
            "count": 1547673,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499865441,
            "variance": 0.2498654591
          },
          {
            "average": 406.7138866,
            "count": 1547673,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7115030159,
            "variance": 0.5062365416
          },
          {
            "average": 220415442.5,
            "count": 1547673,
            "maximum": 220416913.7,
            "minimum": 220414633,
            "name": "GpsTime",
            "position": 12,
            "stddev": 470.9183746,
            "variance": 221764.1155
          },
          {
            "average": 0.4883938661,
            "count": 1547673,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499865441,
            "variance": 0.2498654591
          },
          {
            "average": 0,
            "count": 1547673,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1547673,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1547673,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05638852652,
            "count": 1547673,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2306705334,
            "variance": 0.05320889497
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105593.4227,
          2364876.631,
          0.8809961046,
          -105097.9227,
          2365342.671,
          13.1009961
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105593.42266665684,
                2364876.6306275516,
                0.880996104563768
              ],
              [
                -105593.42266665684,
                2365342.6706275516,
                0.880996104563768
              ],
              [
                -105097.92266665684,
                2365342.6706275516,
                13.10099610456377
              ],
              [
                -105097.92266665684,
                2364876.6306275516,
                13.10099610456377
              ],
              [
                -105593.42266665684,
                2364876.6306275516,
                0.880996104563768
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:53+00:00",
        "end_time": "2018-09-08T04:03:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1826.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1826.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1826.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1826.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8737547,
            71.26040853,
            0.8809961046,
            -156.8597404,
            71.26488163,
            13.1009961
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.87320630210456,
                  71.26040853324126,
                  0.880996104563768
                ],
                [
                  -156.87375469449378,
                  71.26468520642983,
                  0.880996104563768
                ],
                [
                  -156.86028623211956,
                  71.26488163072999,
                  13.10099610456377
                ],
                [
                  -156.85974040351476,
                  71.26060491444333,
                  13.10099610456377
                ],
                [
                  -156.87320630210456,
                  71.26040853324126,
                  0.880996104563768
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1826.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1826.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:53Z",
            "pc:count": 1547673,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105336.7627,
                "count": 1547673,
                "maximum": -105097.9227,
                "minimum": -105593.4227,
                "name": "X",
                "position": 0,
                "stddev": 131.7540429,
                "variance": 17359.12782
              },
              {
                "average": 2365103.306,
                "count": 1547673,
                "maximum": 2365342.671,
                "minimum": 2364876.631,
                "name": "Y",
                "position": 1,
                "stddev": 125.0663279,
                "variance": 15641.58637
              },
              {
                "average": 1.188760852,
                "count": 1547673,
                "maximum": 13.1009961,
                "minimum": 0.8809961046,
                "name": "Z",
                "position": 2,
                "stddev": 0.07072677267,
                "variance": 0.005002276372
              },
              {
                "average": 14416.41855,
                "count": 1547673,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11204.29785,
                "variance": 125536290.2
              },
              {
                "average": 1,
                "count": 1547673,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1547673,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5071878879,
                "count": 1547673,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999484931,
                "variance": 0.2499484958
              },
              {
                "average": 0.0007391742312,
                "count": 1547673,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02717771753,
                "variance": 0.00073862833
              },
              {
                "average": 7.630100157,
                "count": 1547673,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.481093283,
                "variance": 6.155823881
              },
              {
                "average": -2.015736258,
                "count": 1547673,
                "maximum": 16.5,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.230319873,
                "variance": 52.27752546
              },
              {
                "average": 0.4883938661,
                "count": 1547673,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499865441,
                "variance": 0.2498654591
              },
              {
                "average": 406.7138866,
                "count": 1547673,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7115030159,
                "variance": 0.5062365416
              },
              {
                "average": 220415442.5,
                "count": 1547673,
                "maximum": 220416913.7,
                "minimum": 220414633,
                "name": "GpsTime",
                "position": 12,
                "stddev": 470.9183746,
                "variance": 221764.1155
              },
              {
                "average": 0.4883938661,
                "count": 1547673,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499865441,
                "variance": 0.2498654591
              },
              {
                "average": 0,
                "count": 1547673,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1547673,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1547673,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05638852652,
                "count": 1547673,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2306705334,
                "variance": 0.05320889497
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105593.4227,
              2364876.631,
              0.8809961046,
              -105097.9227,
              2365342.671,
              13.1009961
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105593.42266665684,
                    2364876.6306275516,
                    0.880996104563768
                  ],
                  [
                    -105593.42266665684,
                    2365342.6706275516,
                    0.880996104563768
                  ],
                  [
                    -105097.92266665684,
                    2365342.6706275516,
                    13.10099610456377
                  ],
                  [
                    -105097.92266665684,
                    2364876.6306275516,
                    13.10099610456377
                  ],
                  [
                    -105593.42266665684,
                    2364876.6306275516,
                    0.880996104563768
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:53+00:00",
            "end_time": "2018-09-08T04:03:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2017.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71919918309803,
              71.27581860177098,
              9.623357006278438
            ],
            [
              -156.71972709312865,
              71.28016644409632,
              9.623357006278438
            ],
            [
              -156.70624420577087,
              71.28035239312655,
              13.563357006278439
            ],
            [
              -156.70571890701345,
              71.2760045092857,
              13.563357006278439
            ],
            [
              -156.71919918309803,
              71.27581860177098,
              9.623357006278438
            ]
          ]
        ]
      },
      "bbox": [
        -156.7197271,
        71.2758186,
        9.623357006,
        -156.7057189,
        71.28035239,
        13.56335701
      ],
      "properties": {
        "datetime": "2018-09-08T05:35:17Z",
        "pc:count": 2926773,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99617.99922,
            "count": 2926773,
            "maximum": -99372.43656,
            "minimum": -99868.07656,
            "name": "X",
            "position": 0,
            "stddev": 137.5293844,
            "variance": 18914.33158
          },
          {
            "average": 2366554.616,
            "count": 2926773,
            "maximum": 2366788.253,
            "minimum": 2366314.553,
            "name": "Y",
            "position": 1,
            "stddev": 129.4973178,
            "variance": 16769.55533
          },
          {
            "average": 11.94408817,
            "count": 2926773,
            "maximum": 13.56335701,
            "minimum": 9.623357006,
            "name": "Z",
            "position": 2,
            "stddev": 0.708922091,
            "variance": 0.5025705312
          },
          {
            "average": 46591.44265,
            "count": 2926773,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8144.358598,
            "variance": 66330576.98
          },
          {
            "average": 1,
            "count": 2926773,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2926773,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.498864449,
            "count": 2926773,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987959,
            "variance": 0.2499987959
          },
          {
            "average": 0.0004322166427,
            "count": 2926773,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02078533086,
            "variance": 0.0004320299791
          },
          {
            "average": 1.327073538,
            "count": 2926773,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4693577895,
            "variance": 0.2202967345
          },
          {
            "average": -0.5344009982,
            "count": 2926773,
            "maximum": 16.31399918,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.28213418,
            "variance": 105.7222833
          },
          {
            "average": 0.4552881279,
            "count": 2926773,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979969209,
            "variance": 0.2480009332
          },
          {
            "average": 413.4711667,
            "count": 2926773,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9629294681,
            "variance": 0.9272331605
          },
          {
            "average": 220419209.1,
            "count": 2926773,
            "maximum": 220420117.7,
            "minimum": 220418343.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.5935996,
            "variance": 287932.6912
          },
          {
            "average": 0.4552881279,
            "count": 2926773,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979969209,
            "variance": 0.2480009332
          },
          {
            "average": 0,
            "count": 2926773,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2926773,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2926773,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2227716328,
            "count": 2926773,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4161063465,
            "variance": 0.1731444916
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99868.07656,
          2366314.553,
          9.623357006,
          -99372.43656,
          2366788.253,
          13.56335701
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99868.07655893851,
                2366314.552508527,
                9.623357006278438
              ],
              [
                -99868.07655893851,
                2366788.252508527,
                9.623357006278438
              ],
              [
                -99372.4365589385,
                2366788.252508527,
                13.563357006278439
              ],
              [
                -99372.4365589385,
                2366314.552508527,
                13.563357006278439
              ],
              [
                -99868.07655893851,
                2366314.552508527,
                9.623357006278438
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:35:17+00:00",
        "end_time": "2018-09-08T05:05:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2017.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2017.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2017.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2017.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7197271,
            71.2758186,
            9.623357006,
            -156.7057189,
            71.28035239,
            13.56335701
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71919918309803,
                  71.27581860177098,
                  9.623357006278438
                ],
                [
                  -156.71972709312865,
                  71.28016644409632,
                  9.623357006278438
                ],
                [
                  -156.70624420577087,
                  71.28035239312655,
                  13.563357006278439
                ],
                [
                  -156.70571890701345,
                  71.2760045092857,
                  13.563357006278439
                ],
                [
                  -156.71919918309803,
                  71.27581860177098,
                  9.623357006278438
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2017.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2017.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:35:17Z",
            "pc:count": 2926773,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99617.99922,
                "count": 2926773,
                "maximum": -99372.43656,
                "minimum": -99868.07656,
                "name": "X",
                "position": 0,
                "stddev": 137.5293844,
                "variance": 18914.33158
              },
              {
                "average": 2366554.616,
                "count": 2926773,
                "maximum": 2366788.253,
                "minimum": 2366314.553,
                "name": "Y",
                "position": 1,
                "stddev": 129.4973178,
                "variance": 16769.55533
              },
              {
                "average": 11.94408817,
                "count": 2926773,
                "maximum": 13.56335701,
                "minimum": 9.623357006,
                "name": "Z",
                "position": 2,
                "stddev": 0.708922091,
                "variance": 0.5025705312
              },
              {
                "average": 46591.44265,
                "count": 2926773,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8144.358598,
                "variance": 66330576.98
              },
              {
                "average": 1,
                "count": 2926773,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2926773,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.498864449,
                "count": 2926773,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987959,
                "variance": 0.2499987959
              },
              {
                "average": 0.0004322166427,
                "count": 2926773,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02078533086,
                "variance": 0.0004320299791
              },
              {
                "average": 1.327073538,
                "count": 2926773,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4693577895,
                "variance": 0.2202967345
              },
              {
                "average": -0.5344009982,
                "count": 2926773,
                "maximum": 16.31399918,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.28213418,
                "variance": 105.7222833
              },
              {
                "average": 0.4552881279,
                "count": 2926773,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979969209,
                "variance": 0.2480009332
              },
              {
                "average": 413.4711667,
                "count": 2926773,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9629294681,
                "variance": 0.9272331605
              },
              {
                "average": 220419209.1,
                "count": 2926773,
                "maximum": 220420117.7,
                "minimum": 220418343.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.5935996,
                "variance": 287932.6912
              },
              {
                "average": 0.4552881279,
                "count": 2926773,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979969209,
                "variance": 0.2480009332
              },
              {
                "average": 0,
                "count": 2926773,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2926773,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2926773,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2227716328,
                "count": 2926773,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4161063465,
                "variance": 0.1731444916
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99868.07656,
              2366314.553,
              9.623357006,
              -99372.43656,
              2366788.253,
              13.56335701
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99868.07655893851,
                    2366314.552508527,
                    9.623357006278438
                  ],
                  [
                    -99868.07655893851,
                    2366788.252508527,
                    9.623357006278438
                  ],
                  [
                    -99372.4365589385,
                    2366788.252508527,
                    13.563357006278439
                  ],
                  [
                    -99372.4365589385,
                    2366314.552508527,
                    13.563357006278439
                  ],
                  [
                    -99868.07655893851,
                    2366314.552508527,
                    9.623357006278438
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:35:17+00:00",
            "end_time": "2018-09-08T05:05:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2121.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66734337609117,
              71.28775456572126,
              5.338093652233454
            ],
            [
              -156.66786147831883,
              71.29210271204285,
              5.338093652233454
            ],
            [
              -156.65436716928681,
              71.29228517391752,
              23.598093652233455
            ],
            [
              -156.65385168207493,
              71.28793698682809,
              23.598093652233455
            ],
            [
              -156.66734337609117,
              71.28775456572126,
              5.338093652233454
            ]
          ]
        ]
      },
      "bbox": [
        -156.6678615,
        71.28775457,
        5.338093652,
        -156.6538517,
        71.29228517,
        23.59809365
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:08Z",
        "pc:count": 2923255,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97663.08466,
            "count": 2923255,
            "maximum": -97416.65005,
            "minimum": -97912.43005,
            "name": "X",
            "position": 0,
            "stddev": 137.8490257,
            "variance": 19002.35387
          },
          {
            "average": 2367760.885,
            "count": 2923255,
            "maximum": 2368009.255,
            "minimum": 2367535.575,
            "name": "Y",
            "position": 1,
            "stddev": 128.5983121,
            "variance": 16537.52588
          },
          {
            "average": 6.044719814,
            "count": 2923255,
            "maximum": 23.59809365,
            "minimum": 5.338093652,
            "name": "Z",
            "position": 2,
            "stddev": 0.3988966452,
            "variance": 0.1591185336
          },
          {
            "average": 33719.40548,
            "count": 2923255,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11934.33639,
            "variance": 142428385.2
          },
          {
            "average": 1.001033095,
            "count": 2923255,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03260085327,
            "variance": 0.001062815634
          },
          {
            "average": 1.002066874,
            "count": 2923255,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04642160754,
            "variance": 0.002154965647
          },
          {
            "average": 0.5011683893,
            "count": 2923255,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987204,
            "variance": 0.2499987204
          },
          {
            "average": 0.0004289738665,
            "count": 2923255,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02070724498,
            "variance": 0.0004287899946
          },
          {
            "average": 1.294930822,
            "count": 2923255,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4631521751,
            "variance": 0.2145099373
          },
          {
            "average": 1.437647857,
            "count": 2923255,
            "maximum": 20.36400032,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.79458988,
            "variance": 116.5231707
          },
          {
            "average": 0.5046241262,
            "count": 2923255,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999787025,
            "variance": 0.249978703
          },
          {
            "average": 415.0602784,
            "count": 2923255,
            "maximum": 458,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 6.407053413,
            "variance": 41.05033343
          },
          {
            "average": 220426058.9,
            "count": 2923255,
            "maximum": 220723468,
            "minimum": 220418386.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 43896.90766,
            "variance": 1926938502
          },
          {
            "average": 0.5046241262,
            "count": 2923255,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999787025,
            "variance": 0.249978703
          },
          {
            "average": 0,
            "count": 2923255,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2923255,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2923255,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2568325377,
            "count": 2923255,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4368863131,
            "variance": 0.1908696506
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97912.43005,
          2367535.575,
          5.338093652,
          -97416.65005,
          2368009.255,
          23.59809365
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97912.43005352777,
                2367535.574715543,
                5.338093652233454
              ],
              [
                -97912.43005352777,
                2368009.254715543,
                5.338093652233454
              ],
              [
                -97416.65005352777,
                2368009.254715543,
                23.598093652233455
              ],
              [
                -97416.65005352777,
                2367535.574715543,
                23.598093652233455
              ],
              [
                -97912.43005352777,
                2367535.574715543,
                5.338093652233454
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:08+00:00",
        "end_time": "2018-09-08T05:06:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2121.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2121.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2121.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2121.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6678615,
            71.28775457,
            5.338093652,
            -156.6538517,
            71.29228517,
            23.59809365
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66734337609117,
                  71.28775456572126,
                  5.338093652233454
                ],
                [
                  -156.66786147831883,
                  71.29210271204285,
                  5.338093652233454
                ],
                [
                  -156.65436716928681,
                  71.29228517391752,
                  23.598093652233455
                ],
                [
                  -156.65385168207493,
                  71.28793698682809,
                  23.598093652233455
                ],
                [
                  -156.66734337609117,
                  71.28775456572126,
                  5.338093652233454
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2121.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2121.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:08Z",
            "pc:count": 2923255,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97663.08466,
                "count": 2923255,
                "maximum": -97416.65005,
                "minimum": -97912.43005,
                "name": "X",
                "position": 0,
                "stddev": 137.8490257,
                "variance": 19002.35387
              },
              {
                "average": 2367760.885,
                "count": 2923255,
                "maximum": 2368009.255,
                "minimum": 2367535.575,
                "name": "Y",
                "position": 1,
                "stddev": 128.5983121,
                "variance": 16537.52588
              },
              {
                "average": 6.044719814,
                "count": 2923255,
                "maximum": 23.59809365,
                "minimum": 5.338093652,
                "name": "Z",
                "position": 2,
                "stddev": 0.3988966452,
                "variance": 0.1591185336
              },
              {
                "average": 33719.40548,
                "count": 2923255,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11934.33639,
                "variance": 142428385.2
              },
              {
                "average": 1.001033095,
                "count": 2923255,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03260085327,
                "variance": 0.001062815634
              },
              {
                "average": 1.002066874,
                "count": 2923255,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04642160754,
                "variance": 0.002154965647
              },
              {
                "average": 0.5011683893,
                "count": 2923255,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987204,
                "variance": 0.2499987204
              },
              {
                "average": 0.0004289738665,
                "count": 2923255,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02070724498,
                "variance": 0.0004287899946
              },
              {
                "average": 1.294930822,
                "count": 2923255,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4631521751,
                "variance": 0.2145099373
              },
              {
                "average": 1.437647857,
                "count": 2923255,
                "maximum": 20.36400032,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.79458988,
                "variance": 116.5231707
              },
              {
                "average": 0.5046241262,
                "count": 2923255,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999787025,
                "variance": 0.249978703
              },
              {
                "average": 415.0602784,
                "count": 2923255,
                "maximum": 458,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 6.407053413,
                "variance": 41.05033343
              },
              {
                "average": 220426058.9,
                "count": 2923255,
                "maximum": 220723468,
                "minimum": 220418386.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 43896.90766,
                "variance": 1926938502
              },
              {
                "average": 0.5046241262,
                "count": 2923255,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999787025,
                "variance": 0.249978703
              },
              {
                "average": 0,
                "count": 2923255,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2923255,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2923255,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2568325377,
                "count": 2923255,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4368863131,
                "variance": 0.1908696506
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97912.43005,
              2367535.575,
              5.338093652,
              -97416.65005,
              2368009.255,
              23.59809365
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97912.43005352777,
                    2367535.574715543,
                    5.338093652233454
                  ],
                  [
                    -97912.43005352777,
                    2368009.254715543,
                    5.338093652233454
                  ],
                  [
                    -97416.65005352777,
                    2368009.254715543,
                    23.598093652233455
                  ],
                  [
                    -97416.65005352777,
                    2367535.574715543,
                    23.598093652233455
                  ],
                  [
                    -97912.43005352777,
                    2367535.574715543,
                    5.338093652233454
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:08+00:00",
            "end_time": "2018-09-08T05:06:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2085.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7186606100943,
              71.28401269738785,
              6.388142892927272
            ],
            [
              -156.71918856410713,
              71.2883604140389,
              6.388142892927272
            ],
            [
              -156.70569529765018,
              71.28854641111457,
              9.888142892927272
            ],
            [
              -156.70516995765834,
              71.28419865291885,
              9.888142892927272
            ],
            [
              -156.7186606100943,
              71.28401269738785,
              6.388142892927272
            ]
          ]
        ]
      },
      "bbox": [
        -156.7191886,
        71.2840127,
        6.388142893,
        -156.70517,
        71.28854641,
        9.888142893
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:17Z",
        "pc:count": 2982728,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99562.73031,
            "count": 2982728,
            "maximum": -99315.96228,
            "minimum": -99811.80228,
            "name": "X",
            "position": 0,
            "stddev": 134.8001957,
            "variance": 18171.09277
          },
          {
            "average": 2367436.236,
            "count": 2982728,
            "maximum": 2367678.647,
            "minimum": 2367204.987,
            "name": "Y",
            "position": 1,
            "stddev": 129.9867728,
            "variance": 16896.56111
          },
          {
            "average": 8.179665328,
            "count": 2982728,
            "maximum": 9.888142893,
            "minimum": 6.388142893,
            "name": "Z",
            "position": 2,
            "stddev": 0.6662627151,
            "variance": 0.4439060055
          },
          {
            "average": 42969.00659,
            "count": 2982728,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10532.60157,
            "variance": 110935695.9
          },
          {
            "average": 1,
            "count": 2982728,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2982728,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4998843341,
            "count": 2982728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000704,
            "variance": 0.2500000704
          },
          {
            "average": 0.0003627551691,
            "count": 2982728,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01904268099,
            "variance": 0.0003626236994
          },
          {
            "average": 1.341522257,
            "count": 2982728,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4753352955,
            "variance": 0.2259436432
          },
          {
            "average": -0.9351151138,
            "count": 2982728,
            "maximum": 16.30800056,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21516506,
            "variance": 104.3495972
          },
          {
            "average": 0.4640647756,
            "count": 2982728,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987070714,
            "variance": 0.248708743
          },
          {
            "average": 411.7165149,
            "count": 2982728,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9560014069,
            "variance": 0.9139386899
          },
          {
            "average": 220418268.3,
            "count": 2982728,
            "maximum": 220419037.5,
            "minimum": 220417239.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 544.5784951,
            "variance": 296565.7373
          },
          {
            "average": 0.4640647756,
            "count": 2982728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987070714,
            "variance": 0.248708743
          },
          {
            "average": 0,
            "count": 2982728,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2982728,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2982728,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2167063172,
            "count": 2982728,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4120009056,
            "variance": 0.1697447462
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99811.80228,
          2367204.987,
          6.388142893,
          -99315.96228,
          2367678.647,
          9.888142893
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99811.8022839933,
                2367204.9870204795,
                6.388142892927272
              ],
              [
                -99811.8022839933,
                2367678.6470204797,
                6.388142892927272
              ],
              [
                -99315.9622839933,
                2367678.6470204797,
                9.888142892927272
              ],
              [
                -99315.9622839933,
                2367204.9870204795,
                9.888142892927272
              ],
              [
                -99811.8022839933,
                2367204.9870204795,
                6.388142892927272
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:17+00:00",
        "end_time": "2018-09-08T04:47:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2085.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2085.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2085.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2085.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7191886,
            71.2840127,
            6.388142893,
            -156.70517,
            71.28854641,
            9.888142893
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7186606100943,
                  71.28401269738785,
                  6.388142892927272
                ],
                [
                  -156.71918856410713,
                  71.2883604140389,
                  6.388142892927272
                ],
                [
                  -156.70569529765018,
                  71.28854641111457,
                  9.888142892927272
                ],
                [
                  -156.70516995765834,
                  71.28419865291885,
                  9.888142892927272
                ],
                [
                  -156.7186606100943,
                  71.28401269738785,
                  6.388142892927272
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2085.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2085.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:17Z",
            "pc:count": 2982728,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99562.73031,
                "count": 2982728,
                "maximum": -99315.96228,
                "minimum": -99811.80228,
                "name": "X",
                "position": 0,
                "stddev": 134.8001957,
                "variance": 18171.09277
              },
              {
                "average": 2367436.236,
                "count": 2982728,
                "maximum": 2367678.647,
                "minimum": 2367204.987,
                "name": "Y",
                "position": 1,
                "stddev": 129.9867728,
                "variance": 16896.56111
              },
              {
                "average": 8.179665328,
                "count": 2982728,
                "maximum": 9.888142893,
                "minimum": 6.388142893,
                "name": "Z",
                "position": 2,
                "stddev": 0.6662627151,
                "variance": 0.4439060055
              },
              {
                "average": 42969.00659,
                "count": 2982728,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10532.60157,
                "variance": 110935695.9
              },
              {
                "average": 1,
                "count": 2982728,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2982728,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4998843341,
                "count": 2982728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000704,
                "variance": 0.2500000704
              },
              {
                "average": 0.0003627551691,
                "count": 2982728,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01904268099,
                "variance": 0.0003626236994
              },
              {
                "average": 1.341522257,
                "count": 2982728,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4753352955,
                "variance": 0.2259436432
              },
              {
                "average": -0.9351151138,
                "count": 2982728,
                "maximum": 16.30800056,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21516506,
                "variance": 104.3495972
              },
              {
                "average": 0.4640647756,
                "count": 2982728,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987070714,
                "variance": 0.248708743
              },
              {
                "average": 411.7165149,
                "count": 2982728,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9560014069,
                "variance": 0.9139386899
              },
              {
                "average": 220418268.3,
                "count": 2982728,
                "maximum": 220419037.5,
                "minimum": 220417239.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 544.5784951,
                "variance": 296565.7373
              },
              {
                "average": 0.4640647756,
                "count": 2982728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987070714,
                "variance": 0.248708743
              },
              {
                "average": 0,
                "count": 2982728,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2982728,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2982728,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2167063172,
                "count": 2982728,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4120009056,
                "variance": 0.1697447462
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99811.80228,
              2367204.987,
              6.388142893,
              -99315.96228,
              2367678.647,
              9.888142893
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99811.8022839933,
                    2367204.9870204795,
                    6.388142892927272
                  ],
                  [
                    -99811.8022839933,
                    2367678.6470204797,
                    6.388142892927272
                  ],
                  [
                    -99315.9622839933,
                    2367678.6470204797,
                    9.888142892927272
                  ],
                  [
                    -99315.9622839933,
                    2367204.9870204795,
                    9.888142892927272
                  ],
                  [
                    -99811.8022839933,
                    2367204.9870204795,
                    6.388142892927272
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:17+00:00",
            "end_time": "2018-09-08T04:47:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1881.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82198094899408,
              71.26419350961905,
              3.733769743016821
            ],
            [
              -156.82252851736223,
              71.26854073113208,
              3.733769743016821
            ],
            [
              -156.80905403230008,
              71.26873369947498,
              12.45376974301682
            ],
            [
              -156.80850907171975,
              71.26438643491434,
              12.45376974301682
            ],
            [
              -156.82198094899408,
              71.26419350961905,
              3.733769743016821
            ]
          ]
        ]
      },
      "bbox": [
        -156.8225285,
        71.26419351,
        3.733769743,
        -156.8085091,
        71.2687337,
        12.45376974
      ],
      "properties": {
        "datetime": "2018-09-08T05:00:07Z",
        "pc:count": 2907661,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103446.8906,
            "count": 2907661,
            "maximum": -103198.8545,
            "minimum": -103694.4745,
            "name": "X",
            "position": 0,
            "stddev": 135.5927745,
            "variance": 18385.4005
          },
          {
            "average": 2365452.253,
            "count": 2907661,
            "maximum": 2365681.309,
            "minimum": 2365207.609,
            "name": "Y",
            "position": 1,
            "stddev": 129.6156603,
            "variance": 16800.21939
          },
          {
            "average": 9.630930083,
            "count": 2907661,
            "maximum": 12.45376974,
            "minimum": 3.733769743,
            "name": "Z",
            "position": 2,
            "stddev": 1.202714663,
            "variance": 1.446522561
          },
          {
            "average": 45873.56373,
            "count": 2907661,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 7483.147188,
            "variance": 55997491.84
          },
          {
            "average": 1,
            "count": 2907661,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2907661,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5015096327,
            "count": 2907661,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997807,
            "variance": 0.249997807
          },
          {
            "average": 0.000498338699,
            "count": 2907661,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02231794186,
            "variance": 0.0004980905289
          },
          {
            "average": 1.323370572,
            "count": 2907661,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4679260844,
            "variance": 0.2189548204
          },
          {
            "average": -1.293210286,
            "count": 2907661,
            "maximum": 16.37999916,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.52251764,
            "variance": 110.7233775
          },
          {
            "average": 0.4685921089,
            "count": 2907661,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990126552,
            "variance": 0.24901363
          },
          {
            "average": 409.1599595,
            "count": 2907661,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9632642084,
            "variance": 0.9278779351
          },
          {
            "average": 220416807.2,
            "count": 2907661,
            "maximum": 220418007.2,
            "minimum": 220415733.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 588.0157238,
            "variance": 345762.4914
          },
          {
            "average": 0.4685921089,
            "count": 2907661,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990126552,
            "variance": 0.24901363
          },
          {
            "average": 0,
            "count": 2907661,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2907661,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2907661,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2385329652,
            "count": 2907661,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4261866401,
            "variance": 0.1816350522
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103694.4745,
          2365207.609,
          3.733769743,
          -103198.8545,
          2365681.309,
          12.45376974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103694.47453393934,
                2365207.609271604,
                3.733769743016821
              ],
              [
                -103694.47453393934,
                2365681.3092716043,
                3.733769743016821
              ],
              [
                -103198.85453393935,
                2365681.3092716043,
                12.45376974301682
              ],
              [
                -103198.85453393935,
                2365207.609271604,
                12.45376974301682
              ],
              [
                -103694.47453393934,
                2365207.609271604,
                3.733769743016821
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:00:07+00:00",
        "end_time": "2018-09-08T04:22:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1881.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1881.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1881.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1881.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8225285,
            71.26419351,
            3.733769743,
            -156.8085091,
            71.2687337,
            12.45376974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82198094899408,
                  71.26419350961905,
                  3.733769743016821
                ],
                [
                  -156.82252851736223,
                  71.26854073113208,
                  3.733769743016821
                ],
                [
                  -156.80905403230008,
                  71.26873369947498,
                  12.45376974301682
                ],
                [
                  -156.80850907171975,
                  71.26438643491434,
                  12.45376974301682
                ],
                [
                  -156.82198094899408,
                  71.26419350961905,
                  3.733769743016821
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1881.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1881.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:00:07Z",
            "pc:count": 2907661,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103446.8906,
                "count": 2907661,
                "maximum": -103198.8545,
                "minimum": -103694.4745,
                "name": "X",
                "position": 0,
                "stddev": 135.5927745,
                "variance": 18385.4005
              },
              {
                "average": 2365452.253,
                "count": 2907661,
                "maximum": 2365681.309,
                "minimum": 2365207.609,
                "name": "Y",
                "position": 1,
                "stddev": 129.6156603,
                "variance": 16800.21939
              },
              {
                "average": 9.630930083,
                "count": 2907661,
                "maximum": 12.45376974,
                "minimum": 3.733769743,
                "name": "Z",
                "position": 2,
                "stddev": 1.202714663,
                "variance": 1.446522561
              },
              {
                "average": 45873.56373,
                "count": 2907661,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 7483.147188,
                "variance": 55997491.84
              },
              {
                "average": 1,
                "count": 2907661,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2907661,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5015096327,
                "count": 2907661,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997807,
                "variance": 0.249997807
              },
              {
                "average": 0.000498338699,
                "count": 2907661,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02231794186,
                "variance": 0.0004980905289
              },
              {
                "average": 1.323370572,
                "count": 2907661,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4679260844,
                "variance": 0.2189548204
              },
              {
                "average": -1.293210286,
                "count": 2907661,
                "maximum": 16.37999916,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.52251764,
                "variance": 110.7233775
              },
              {
                "average": 0.4685921089,
                "count": 2907661,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990126552,
                "variance": 0.24901363
              },
              {
                "average": 409.1599595,
                "count": 2907661,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9632642084,
                "variance": 0.9278779351
              },
              {
                "average": 220416807.2,
                "count": 2907661,
                "maximum": 220418007.2,
                "minimum": 220415733.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 588.0157238,
                "variance": 345762.4914
              },
              {
                "average": 0.4685921089,
                "count": 2907661,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990126552,
                "variance": 0.24901363
              },
              {
                "average": 0,
                "count": 2907661,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2907661,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2907661,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2385329652,
                "count": 2907661,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4261866401,
                "variance": 0.1816350522
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103694.4745,
              2365207.609,
              3.733769743,
              -103198.8545,
              2365681.309,
              12.45376974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103694.47453393934,
                    2365207.609271604,
                    3.733769743016821
                  ],
                  [
                    -103694.47453393934,
                    2365681.3092716043,
                    3.733769743016821
                  ],
                  [
                    -103198.85453393935,
                    2365681.3092716043,
                    12.45376974301682
                  ],
                  [
                    -103198.85453393935,
                    2365207.609271604,
                    12.45376974301682
                  ],
                  [
                    -103694.47453393934,
                    2365207.609271604,
                    3.733769743016821
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:00:07+00:00",
            "end_time": "2018-09-08T04:22:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2172.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7561524643932,
              71.29655999367074,
              -18.770560102151986
            ],
            [
              -156.75668788190663,
              71.30090705938504,
              -18.770560102151986
            ],
            [
              -156.74318682237524,
              71.30109564971751,
              32.68943989784802
            ],
            [
              -156.7426540211231,
              71.29674854185514,
              32.68943989784802
            ],
            [
              -156.7561524643932,
              71.29655999367074,
              -18.770560102151986
            ]
          ]
        ]
      },
      "bbox": [
        -156.7566879,
        71.29655999,
        -18.7705601,
        -156.742654,
        71.30109565,
        32.6894399
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:34Z",
        "pc:count": 3191573,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100882.3304,
            "count": 3191573,
            "maximum": -100634.9527,
            "minimum": -101130.8127,
            "name": "X",
            "position": 0,
            "stddev": 135.2026909,
            "variance": 18279.76762
          },
          {
            "average": 2368877.577,
            "count": 3191573,
            "maximum": 2369099.884,
            "minimum": 2368626.324,
            "name": "Y",
            "position": 1,
            "stddev": 125.5978958,
            "variance": 15774.83143
          },
          {
            "average": 8.372970104,
            "count": 3191573,
            "maximum": 32.6894399,
            "minimum": -18.7705601,
            "name": "Z",
            "position": 2,
            "stddev": 3.107943229,
            "variance": 9.659311113
          },
          {
            "average": 32989.95684,
            "count": 3191573,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12323.59064,
            "variance": 151870886.3
          },
          {
            "average": 1.024034857,
            "count": 3191573,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1575083325,
            "variance": 0.0248088748
          },
          {
            "average": 1.048063134,
            "count": 3191573,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2231871968,
            "variance": 0.04981252482
          },
          {
            "average": 0.502683473,
            "count": 3191573,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999928773,
            "variance": 0.2499928773
          },
          {
            "average": 0.000464347831,
            "count": 3191573,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02154373128,
            "variance": 0.0004641323575
          },
          {
            "average": 2.057707908,
            "count": 3191573,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.955462196,
            "variance": 3.823832398
          },
          {
            "average": 0.9622665537,
            "count": 3191573,
            "maximum": 16.33200073,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59511447,
            "variance": 112.2564507
          },
          {
            "average": 0.5396411111,
            "count": 3191573,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984261832,
            "variance": 0.2484286601
          },
          {
            "average": 406.3267712,
            "count": 3191573,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9643332068,
            "variance": 0.9299385338
          },
          {
            "average": 220415237.8,
            "count": 3191573,
            "maximum": 220416114.2,
            "minimum": 220414528,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.4617633,
            "variance": 287791.2235
          },
          {
            "average": 0.5396411111,
            "count": 3191573,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984261832,
            "variance": 0.2484286601
          },
          {
            "average": 0,
            "count": 3191573,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191573,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191573,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2657210097,
            "count": 3191573,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4417164428,
            "variance": 0.1951134158
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101130.8127,
          2368626.324,
          -18.7705601,
          -100634.9527,
          2369099.884,
          32.6894399
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101130.81266884864,
                2368626.323524504,
                -18.770560102151986
              ],
              [
                -101130.81266884864,
                2369099.8835245036,
                -18.770560102151986
              ],
              [
                -100634.95266884865,
                2369099.8835245036,
                32.68943989784802
              ],
              [
                -100634.95266884865,
                2368626.323524504,
                32.68943989784802
              ],
              [
                -101130.81266884864,
                2368626.323524504,
                -18.770560102151986
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:34+00:00",
        "end_time": "2018-09-08T04:02:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2172.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2172.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2172.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2172.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7566879,
            71.29655999,
            -18.7705601,
            -156.742654,
            71.30109565,
            32.6894399
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7561524643932,
                  71.29655999367074,
                  -18.770560102151986
                ],
                [
                  -156.75668788190663,
                  71.30090705938504,
                  -18.770560102151986
                ],
                [
                  -156.74318682237524,
                  71.30109564971751,
                  32.68943989784802
                ],
                [
                  -156.7426540211231,
                  71.29674854185514,
                  32.68943989784802
                ],
                [
                  -156.7561524643932,
                  71.29655999367074,
                  -18.770560102151986
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2172.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2172.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:34Z",
            "pc:count": 3191573,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100882.3304,
                "count": 3191573,
                "maximum": -100634.9527,
                "minimum": -101130.8127,
                "name": "X",
                "position": 0,
                "stddev": 135.2026909,
                "variance": 18279.76762
              },
              {
                "average": 2368877.577,
                "count": 3191573,
                "maximum": 2369099.884,
                "minimum": 2368626.324,
                "name": "Y",
                "position": 1,
                "stddev": 125.5978958,
                "variance": 15774.83143
              },
              {
                "average": 8.372970104,
                "count": 3191573,
                "maximum": 32.6894399,
                "minimum": -18.7705601,
                "name": "Z",
                "position": 2,
                "stddev": 3.107943229,
                "variance": 9.659311113
              },
              {
                "average": 32989.95684,
                "count": 3191573,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12323.59064,
                "variance": 151870886.3
              },
              {
                "average": 1.024034857,
                "count": 3191573,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1575083325,
                "variance": 0.0248088748
              },
              {
                "average": 1.048063134,
                "count": 3191573,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2231871968,
                "variance": 0.04981252482
              },
              {
                "average": 0.502683473,
                "count": 3191573,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999928773,
                "variance": 0.2499928773
              },
              {
                "average": 0.000464347831,
                "count": 3191573,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02154373128,
                "variance": 0.0004641323575
              },
              {
                "average": 2.057707908,
                "count": 3191573,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.955462196,
                "variance": 3.823832398
              },
              {
                "average": 0.9622665537,
                "count": 3191573,
                "maximum": 16.33200073,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59511447,
                "variance": 112.2564507
              },
              {
                "average": 0.5396411111,
                "count": 3191573,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984261832,
                "variance": 0.2484286601
              },
              {
                "average": 406.3267712,
                "count": 3191573,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9643332068,
                "variance": 0.9299385338
              },
              {
                "average": 220415237.8,
                "count": 3191573,
                "maximum": 220416114.2,
                "minimum": 220414528,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.4617633,
                "variance": 287791.2235
              },
              {
                "average": 0.5396411111,
                "count": 3191573,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984261832,
                "variance": 0.2484286601
              },
              {
                "average": 0,
                "count": 3191573,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191573,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191573,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2657210097,
                "count": 3191573,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4417164428,
                "variance": 0.1951134158
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101130.8127,
              2368626.324,
              -18.7705601,
              -100634.9527,
              2369099.884,
              32.6894399
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101130.81266884864,
                    2368626.323524504,
                    -18.770560102151986
                  ],
                  [
                    -101130.81266884864,
                    2369099.8835245036,
                    -18.770560102151986
                  ],
                  [
                    -100634.95266884865,
                    2369099.8835245036,
                    32.68943989784802
                  ],
                  [
                    -100634.95266884865,
                    2368626.323524504,
                    32.68943989784802
                  ],
                  [
                    -101130.81266884864,
                    2368626.323524504,
                    -18.770560102151986
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:34+00:00",
            "end_time": "2018-09-08T04:02:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1827.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.86046007211988,
              71.26033196422168,
              0.912908854315584
            ],
            [
              -156.86101503010892,
              71.26467914869997,
              0.912908854315584
            ],
            [
              -156.84754591663454,
              71.26487470858575,
              13.392908854315586
            ],
            [
              -156.84699356486107,
              71.26052748049175,
              13.392908854315586
            ],
            [
              -156.86046007211988,
              71.26033196422168,
              0.912908854315584
            ]
          ]
        ]
      },
      "bbox": [
        -156.861015,
        71.26033196,
        0.9129088543,
        -156.8469936,
        71.26487471,
        13.39290885
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:53Z",
        "pc:count": 2577146,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104859.7498,
            "count": 2577146,
            "maximum": -104630.1143,
            "minimum": -105125.6343,
            "name": "X",
            "position": 0,
            "stddev": 130.3289243,
            "variance": 16985.6285
          },
          {
            "average": 2365065.317,
            "count": 2577146,
            "maximum": 2365321.801,
            "minimum": 2364848.081,
            "name": "Y",
            "position": 1,
            "stddev": 128.3934553,
            "variance": 16484.87937
          },
          {
            "average": 7.855450717,
            "count": 2577146,
            "maximum": 13.39290885,
            "minimum": 0.9129088543,
            "name": "Z",
            "position": 2,
            "stddev": 3.96034688,
            "variance": 15.68434741
          },
          {
            "average": 35529.52155,
            "count": 2577146,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15000.27384,
            "variance": 225008215.2
          },
          {
            "average": 1.000005044,
            "count": 2577146,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002245955533,
            "variance": 5.044316258e-06
          },
          {
            "average": 1.000010089,
            "count": 2577146,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003176252765,
            "variance": 1.008858163e-05
          },
          {
            "average": 0.4981972306,
            "count": 2577146,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499996847,
            "variance": 0.249996847
          },
          {
            "average": 0.000441961767,
            "count": 2577146,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02101824465,
            "variance": 0.0004417666082
          },
          {
            "average": 2.334279858,
            "count": 2577146,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.594629371,
            "variance": 6.732101575
          },
          {
            "average": 0.01969515874,
            "count": 2577146,
            "maximum": 16.29000092,
            "minimum": -15.99600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.888684304,
            "variance": 97.78607727
          },
          {
            "average": 0.448716526,
            "count": 2577146,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4973631483,
            "variance": 0.2473701013
          },
          {
            "average": 407.7003717,
            "count": 2577146,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9005537876,
            "variance": 0.8109971243
          },
          {
            "average": 220416034.4,
            "count": 2577146,
            "maximum": 220416913.4,
            "minimum": 220414886.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 547.0006731,
            "variance": 299209.7364
          },
          {
            "average": 0.448716526,
            "count": 2577146,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4973631483,
            "variance": 0.2473701013
          },
          {
            "average": 0,
            "count": 2577146,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2577146,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2577146,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2068311225,
            "count": 2577146,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.405033422,
            "variance": 0.1640520729
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105125.6343,
          2364848.081,
          0.9129088543,
          -104630.1143,
          2365321.801,
          13.39290885
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105125.63431361408,
                2364848.0805743025,
                0.912908854315584
              ],
              [
                -105125.63431361408,
                2365321.800574302,
                0.912908854315584
              ],
              [
                -104630.11431361409,
                2365321.800574302,
                13.392908854315586
              ],
              [
                -104630.11431361409,
                2364848.0805743025,
                13.392908854315586
              ],
              [
                -105125.63431361408,
                2364848.0805743025,
                0.912908854315584
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:53+00:00",
        "end_time": "2018-09-08T04:08:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1827.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1827.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1827.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1827.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.861015,
            71.26033196,
            0.9129088543,
            -156.8469936,
            71.26487471,
            13.39290885
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.86046007211988,
                  71.26033196422168,
                  0.912908854315584
                ],
                [
                  -156.86101503010892,
                  71.26467914869997,
                  0.912908854315584
                ],
                [
                  -156.84754591663454,
                  71.26487470858575,
                  13.392908854315586
                ],
                [
                  -156.84699356486107,
                  71.26052748049175,
                  13.392908854315586
                ],
                [
                  -156.86046007211988,
                  71.26033196422168,
                  0.912908854315584
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1827.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1827.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:53Z",
            "pc:count": 2577146,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104859.7498,
                "count": 2577146,
                "maximum": -104630.1143,
                "minimum": -105125.6343,
                "name": "X",
                "position": 0,
                "stddev": 130.3289243,
                "variance": 16985.6285
              },
              {
                "average": 2365065.317,
                "count": 2577146,
                "maximum": 2365321.801,
                "minimum": 2364848.081,
                "name": "Y",
                "position": 1,
                "stddev": 128.3934553,
                "variance": 16484.87937
              },
              {
                "average": 7.855450717,
                "count": 2577146,
                "maximum": 13.39290885,
                "minimum": 0.9129088543,
                "name": "Z",
                "position": 2,
                "stddev": 3.96034688,
                "variance": 15.68434741
              },
              {
                "average": 35529.52155,
                "count": 2577146,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15000.27384,
                "variance": 225008215.2
              },
              {
                "average": 1.000005044,
                "count": 2577146,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002245955533,
                "variance": 5.044316258e-06
              },
              {
                "average": 1.000010089,
                "count": 2577146,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003176252765,
                "variance": 1.008858163e-05
              },
              {
                "average": 0.4981972306,
                "count": 2577146,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499996847,
                "variance": 0.249996847
              },
              {
                "average": 0.000441961767,
                "count": 2577146,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02101824465,
                "variance": 0.0004417666082
              },
              {
                "average": 2.334279858,
                "count": 2577146,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.594629371,
                "variance": 6.732101575
              },
              {
                "average": 0.01969515874,
                "count": 2577146,
                "maximum": 16.29000092,
                "minimum": -15.99600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.888684304,
                "variance": 97.78607727
              },
              {
                "average": 0.448716526,
                "count": 2577146,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4973631483,
                "variance": 0.2473701013
              },
              {
                "average": 407.7003717,
                "count": 2577146,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9005537876,
                "variance": 0.8109971243
              },
              {
                "average": 220416034.4,
                "count": 2577146,
                "maximum": 220416913.4,
                "minimum": 220414886.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 547.0006731,
                "variance": 299209.7364
              },
              {
                "average": 0.448716526,
                "count": 2577146,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4973631483,
                "variance": 0.2473701013
              },
              {
                "average": 0,
                "count": 2577146,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2577146,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2577146,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2068311225,
                "count": 2577146,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.405033422,
                "variance": 0.1640520729
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105125.6343,
              2364848.081,
              0.9129088543,
              -104630.1143,
              2365321.801,
              13.39290885
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105125.63431361408,
                    2364848.0805743025,
                    0.912908854315584
                  ],
                  [
                    -105125.63431361408,
                    2365321.800574302,
                    0.912908854315584
                  ],
                  [
                    -104630.11431361409,
                    2365321.800574302,
                    13.392908854315586
                  ],
                  [
                    -104630.11431361409,
                    2364848.0805743025,
                    13.392908854315586
                  ],
                  [
                    -105125.63431361408,
                    2364848.0805743025,
                    0.912908854315584
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:53+00:00",
            "end_time": "2018-09-08T04:08:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1675.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78476654029996,
              71.24756229373587,
              9.44769616657851
            ],
            [
              -156.78530655976056,
              71.25190968384901,
              9.44769616657851
            ],
            [
              -156.77184066016642,
              71.25210009725184,
              99.1876961665785
            ],
            [
              -156.77130324541494,
              71.24775266470004,
              99.1876961665785
            ],
            [
              -156.78476654029996,
              71.24756229373587,
              9.44769616657851
            ]
          ]
        ]
      },
      "bbox": [
        -156.7853066,
        71.24756229,
        9.447696167,
        -156.7713032,
        71.2521001,
        99.18769617
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:46Z",
        "pc:count": 2155259,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102137.533,
            "count": 2155259,
            "maximum": -101908.0735,
            "minimum": -102403.7335,
            "name": "X",
            "position": 0,
            "stddev": 135.4450844,
            "variance": 18345.37088
          },
          {
            "average": 2363589.729,
            "count": 2155259,
            "maximum": 2363814.506,
            "minimum": 2363340.746,
            "name": "Y",
            "position": 1,
            "stddev": 135.143412,
            "variance": 18263.7418
          },
          {
            "average": 9.664873694,
            "count": 2155259,
            "maximum": 99.18769617,
            "minimum": 9.447696167,
            "name": "Z",
            "position": 2,
            "stddev": 0.07835193013,
            "variance": 0.006139024955
          },
          {
            "average": 22504.0261,
            "count": 2155259,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14960.85851,
            "variance": 223827287.4
          },
          {
            "average": 1.00000232,
            "count": 2155259,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001523122612,
            "variance": 2.31990249e-06
          },
          {
            "average": 1.00000464,
            "count": 2155259,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002154018156,
            "variance": 4.639794216e-06
          },
          {
            "average": 0.4956086484,
            "count": 2155259,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999808317,
            "variance": 0.249980832
          },
          {
            "average": 0.000702931759,
            "count": 2155259,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0265035464,
            "variance": 0.0007024379719
          },
          {
            "average": 6.638155321,
            "count": 2155259,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.431066093,
            "variance": 11.77221453
          },
          {
            "average": 1.60754349,
            "count": 2155259,
            "maximum": 16.25399971,
            "minimum": -19.6439991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.975393469,
            "variance": 63.60690098
          },
          {
            "average": 0.4801492535,
            "count": 2155259,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996059084,
            "variance": 0.2496060637
          },
          {
            "average": 422.9907709,
            "count": 2155259,
            "maximum": 465,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.70178685,
            "variance": 313.3532577
          },
          {
            "average": 220467676.7,
            "count": 2155259,
            "maximum": 220726266.1,
            "minimum": 220419356.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 110625.9263,
            "variance": 12238095560.0
          },
          {
            "average": 0.4801492535,
            "count": 2155259,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996059084,
            "variance": 0.2496060637
          },
          {
            "average": 0,
            "count": 2155259,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2155259,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2155259,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07497196393,
            "count": 2155259,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2633461614,
            "variance": 0.06935120073
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102403.7335,
          2363340.746,
          9.447696167,
          -101908.0735,
          2363814.506,
          99.18769617
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102403.73347946467,
                2363340.746298556,
                9.44769616657851
              ],
              [
                -102403.73347946467,
                2363814.506298556,
                9.44769616657851
              ],
              [
                -101908.07347946467,
                2363814.506298556,
                99.1876961665785
              ],
              [
                -101908.07347946467,
                2363340.746298556,
                99.1876961665785
              ],
              [
                -102403.73347946467,
                2363340.746298556,
                9.44769616657851
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:46+00:00",
        "end_time": "2018-09-08T05:22:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1675.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1675.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1675.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1675.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7853066,
            71.24756229,
            9.447696167,
            -156.7713032,
            71.2521001,
            99.18769617
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78476654029996,
                  71.24756229373587,
                  9.44769616657851
                ],
                [
                  -156.78530655976056,
                  71.25190968384901,
                  9.44769616657851
                ],
                [
                  -156.77184066016642,
                  71.25210009725184,
                  99.1876961665785
                ],
                [
                  -156.77130324541494,
                  71.24775266470004,
                  99.1876961665785
                ],
                [
                  -156.78476654029996,
                  71.24756229373587,
                  9.44769616657851
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1675.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1675.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:46Z",
            "pc:count": 2155259,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102137.533,
                "count": 2155259,
                "maximum": -101908.0735,
                "minimum": -102403.7335,
                "name": "X",
                "position": 0,
                "stddev": 135.4450844,
                "variance": 18345.37088
              },
              {
                "average": 2363589.729,
                "count": 2155259,
                "maximum": 2363814.506,
                "minimum": 2363340.746,
                "name": "Y",
                "position": 1,
                "stddev": 135.143412,
                "variance": 18263.7418
              },
              {
                "average": 9.664873694,
                "count": 2155259,
                "maximum": 99.18769617,
                "minimum": 9.447696167,
                "name": "Z",
                "position": 2,
                "stddev": 0.07835193013,
                "variance": 0.006139024955
              },
              {
                "average": 22504.0261,
                "count": 2155259,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14960.85851,
                "variance": 223827287.4
              },
              {
                "average": 1.00000232,
                "count": 2155259,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001523122612,
                "variance": 2.31990249e-06
              },
              {
                "average": 1.00000464,
                "count": 2155259,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002154018156,
                "variance": 4.639794216e-06
              },
              {
                "average": 0.4956086484,
                "count": 2155259,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999808317,
                "variance": 0.249980832
              },
              {
                "average": 0.000702931759,
                "count": 2155259,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0265035464,
                "variance": 0.0007024379719
              },
              {
                "average": 6.638155321,
                "count": 2155259,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.431066093,
                "variance": 11.77221453
              },
              {
                "average": 1.60754349,
                "count": 2155259,
                "maximum": 16.25399971,
                "minimum": -19.6439991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.975393469,
                "variance": 63.60690098
              },
              {
                "average": 0.4801492535,
                "count": 2155259,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996059084,
                "variance": 0.2496060637
              },
              {
                "average": 422.9907709,
                "count": 2155259,
                "maximum": 465,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.70178685,
                "variance": 313.3532577
              },
              {
                "average": 220467676.7,
                "count": 2155259,
                "maximum": 220726266.1,
                "minimum": 220419356.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 110625.9263,
                "variance": 12238095560.0
              },
              {
                "average": 0.4801492535,
                "count": 2155259,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996059084,
                "variance": 0.2496060637
              },
              {
                "average": 0,
                "count": 2155259,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2155259,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2155259,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07497196393,
                "count": 2155259,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2633461614,
                "variance": 0.06935120073
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102403.7335,
              2363340.746,
              9.447696167,
              -101908.0735,
              2363814.506,
              99.18769617
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102403.73347946467,
                    2363340.746298556,
                    9.44769616657851
                  ],
                  [
                    -102403.73347946467,
                    2363814.506298556,
                    9.44769616657851
                  ],
                  [
                    -101908.07347946467,
                    2363814.506298556,
                    99.1876961665785
                  ],
                  [
                    -101908.07347946467,
                    2363340.746298556,
                    99.1876961665785
                  ],
                  [
                    -102403.73347946467,
                    2363340.746298556,
                    9.44769616657851
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:46+00:00",
            "end_time": "2018-09-08T05:22:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1974.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8214842123727,
              71.27238800506947,
              1.815318254740674
            ],
            [
              -156.8220318152234,
              71.2767349167932,
              1.815318254740674
            ],
            [
              -156.80855294294832,
              71.276927853814,
              31.875318254740677
            ],
            [
              -156.80800794936022,
              71.27258089903228,
              31.875318254740677
            ],
            [
              -156.8214842123727,
              71.27238800506947,
              1.815318254740674
            ]
          ]
        ]
      },
      "bbox": [
        -156.8220318,
        71.27238801,
        1.815318255,
        -156.8080079,
        71.27692785,
        31.87531825
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:19Z",
        "pc:count": 3030037,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103390.0257,
            "count": 3030037,
            "maximum": -103142.743,
            "minimum": -103638.343,
            "name": "X",
            "position": 0,
            "stddev": 133.2934164,
            "variance": 17767.13485
          },
          {
            "average": 2366330.808,
            "count": 3030037,
            "maximum": 2366571.774,
            "minimum": 2366098.134,
            "name": "Y",
            "position": 1,
            "stddev": 129.7423463,
            "variance": 16833.07644
          },
          {
            "average": 12.24362899,
            "count": 3030037,
            "maximum": 31.87531825,
            "minimum": 1.815318255,
            "name": "Z",
            "position": 2,
            "stddev": 3.28807135,
            "variance": 10.81141321
          },
          {
            "average": 33355.69824,
            "count": 3030037,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11669.52272,
            "variance": 136177760.5
          },
          {
            "average": 1.001670277,
            "count": 3030037,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04104447432,
            "variance": 0.001684648872
          },
          {
            "average": 1.003347154,
            "count": 3030037,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05820168422,
            "variance": 0.003387436046
          },
          {
            "average": 0.4995163425,
            "count": 3030037,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998486,
            "variance": 0.2499998486
          },
          {
            "average": 0.0004362983026,
            "count": 3030037,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02088320115,
            "variance": 0.0004361080903
          },
          {
            "average": 1.401559123,
            "count": 3030037,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7673070562,
            "variance": 0.5887601185
          },
          {
            "average": -0.6617763629,
            "count": 3030037,
            "maximum": 16.3560009,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.29925018,
            "variance": 106.0745542
          },
          {
            "average": 0.4555551632,
            "count": 3030037,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980208212,
            "variance": 0.2480247383
          },
          {
            "average": 407.4504899,
            "count": 3030037,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9665382129,
            "variance": 0.9341961169
          },
          {
            "average": 220415872.1,
            "count": 3030037,
            "maximum": 220416879.9,
            "minimum": 220414918.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 586.3325636,
            "variance": 343785.8751
          },
          {
            "average": 0.4555551632,
            "count": 3030037,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980208212,
            "variance": 0.2480247383
          },
          {
            "average": 0,
            "count": 3030037,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3030037,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3030037,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2169003217,
            "count": 3030037,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4121342356,
            "variance": 0.1698546282
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103638.343,
          2366098.134,
          1.815318255,
          -103142.743,
          2366571.774,
          31.87531825
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103638.34297408663,
                2366098.1336625325,
                1.815318254740674
              ],
              [
                -103638.34297408663,
                2366571.773662532,
                1.815318254740674
              ],
              [
                -103142.74297408662,
                2366571.773662532,
                31.875318254740677
              ],
              [
                -103142.74297408662,
                2366098.1336625325,
                31.875318254740677
              ],
              [
                -103638.34297408663,
                2366098.1336625325,
                1.815318254740674
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:19+00:00",
        "end_time": "2018-09-08T04:08:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1974.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1974.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1974.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1974.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8220318,
            71.27238801,
            1.815318255,
            -156.8080079,
            71.27692785,
            31.87531825
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8214842123727,
                  71.27238800506947,
                  1.815318254740674
                ],
                [
                  -156.8220318152234,
                  71.2767349167932,
                  1.815318254740674
                ],
                [
                  -156.80855294294832,
                  71.276927853814,
                  31.875318254740677
                ],
                [
                  -156.80800794936022,
                  71.27258089903228,
                  31.875318254740677
                ],
                [
                  -156.8214842123727,
                  71.27238800506947,
                  1.815318254740674
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1974.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1974.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:19Z",
            "pc:count": 3030037,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103390.0257,
                "count": 3030037,
                "maximum": -103142.743,
                "minimum": -103638.343,
                "name": "X",
                "position": 0,
                "stddev": 133.2934164,
                "variance": 17767.13485
              },
              {
                "average": 2366330.808,
                "count": 3030037,
                "maximum": 2366571.774,
                "minimum": 2366098.134,
                "name": "Y",
                "position": 1,
                "stddev": 129.7423463,
                "variance": 16833.07644
              },
              {
                "average": 12.24362899,
                "count": 3030037,
                "maximum": 31.87531825,
                "minimum": 1.815318255,
                "name": "Z",
                "position": 2,
                "stddev": 3.28807135,
                "variance": 10.81141321
              },
              {
                "average": 33355.69824,
                "count": 3030037,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11669.52272,
                "variance": 136177760.5
              },
              {
                "average": 1.001670277,
                "count": 3030037,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04104447432,
                "variance": 0.001684648872
              },
              {
                "average": 1.003347154,
                "count": 3030037,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05820168422,
                "variance": 0.003387436046
              },
              {
                "average": 0.4995163425,
                "count": 3030037,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998486,
                "variance": 0.2499998486
              },
              {
                "average": 0.0004362983026,
                "count": 3030037,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02088320115,
                "variance": 0.0004361080903
              },
              {
                "average": 1.401559123,
                "count": 3030037,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7673070562,
                "variance": 0.5887601185
              },
              {
                "average": -0.6617763629,
                "count": 3030037,
                "maximum": 16.3560009,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.29925018,
                "variance": 106.0745542
              },
              {
                "average": 0.4555551632,
                "count": 3030037,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980208212,
                "variance": 0.2480247383
              },
              {
                "average": 407.4504899,
                "count": 3030037,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9665382129,
                "variance": 0.9341961169
              },
              {
                "average": 220415872.1,
                "count": 3030037,
                "maximum": 220416879.9,
                "minimum": 220414918.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 586.3325636,
                "variance": 343785.8751
              },
              {
                "average": 0.4555551632,
                "count": 3030037,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980208212,
                "variance": 0.2480247383
              },
              {
                "average": 0,
                "count": 3030037,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3030037,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3030037,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2169003217,
                "count": 3030037,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4121342356,
                "variance": 0.1698546282
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103638.343,
              2366098.134,
              1.815318255,
              -103142.743,
              2366571.774,
              31.87531825
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103638.34297408663,
                    2366098.1336625325,
                    1.815318254740674
                  ],
                  [
                    -103638.34297408663,
                    2366571.773662532,
                    1.815318254740674
                  ],
                  [
                    -103142.74297408662,
                    2366571.773662532,
                    31.875318254740677
                  ],
                  [
                    -103142.74297408662,
                    2366098.1336625325,
                    31.875318254740677
                  ],
                  [
                    -103638.34297408663,
                    2366098.1336625325,
                    1.815318254740674
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:19+00:00",
            "end_time": "2018-09-08T04:08:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2018.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7064468296493,
              71.27573174444122,
              6.194486689595361
            ],
            [
              -156.7069721301228,
              71.28007851691366,
              6.194486689595361
            ],
            [
              -156.69348374967436,
              71.28026366657998,
              12.45448668959536
            ],
            [
              -156.69296106092747,
              71.27591685278084,
              12.45448668959536
            ],
            [
              -156.7064468296493,
              71.27573174444122,
              6.194486689595361
            ]
          ]
        ]
      },
      "bbox": [
        -156.7069721,
        71.27573174,
        6.19448669,
        -156.6929611,
        71.28026367,
        12.45448669
      ],
      "properties": {
        "datetime": "2018-09-11T18:00:45Z",
        "pc:count": 3409955,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99152.1807,
            "count": 3409955,
            "maximum": -98904.5258,
            "minimum": -99400.3658,
            "name": "X",
            "position": 0,
            "stddev": 134.961618,
            "variance": 18214.63832
          },
          {
            "average": 2366518.286,
            "count": 3409955,
            "maximum": 2366759.553,
            "minimum": 2366285.973,
            "name": "Y",
            "position": 1,
            "stddev": 127.758098,
            "variance": 16322.1316
          },
          {
            "average": 9.70963625,
            "count": 3409955,
            "maximum": 12.45448669,
            "minimum": 6.19448669,
            "name": "Z",
            "position": 2,
            "stddev": 1.302493166,
            "variance": 1.696488448
          },
          {
            "average": 44717.4957,
            "count": 3409955,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9692.380427,
            "variance": 93942238.34
          },
          {
            "average": 1,
            "count": 3409955,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3409955,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5020843384,
            "count": 3409955,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999957288,
            "variance": 0.2499957288
          },
          {
            "average": 0.0003979524656,
            "count": 3409955,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01994477917,
            "variance": 0.0003977942161
          },
          {
            "average": 1.301991082,
            "count": 3409955,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4595268972,
            "variance": 0.2111649692
          },
          {
            "average": 1.476057435,
            "count": 3409955,
            "maximum": 20.52599907,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73219029,
            "variance": 115.1799084
          },
          {
            "average": 0.5229693647,
            "count": 3409955,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994722029,
            "variance": 0.2494724814
          },
          {
            "average": 415.6139885,
            "count": 3409955,
            "maximum": 460,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 7.879590958,
            "variance": 62.08795366
          },
          {
            "average": 220428816.3,
            "count": 3409955,
            "maximum": 220724045.3,
            "minimum": 220419029.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 52041.32039,
            "variance": 2708299028
          },
          {
            "average": 0.5229693647,
            "count": 3409955,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994722029,
            "variance": 0.2494724814
          },
          {
            "average": 0,
            "count": 3409955,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3409955,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3409955,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.254167577,
            "count": 3409955,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4353923235,
            "variance": 0.1895664754
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99400.3658,
          2366285.973,
          6.19448669,
          -98904.5258,
          2366759.553,
          12.45448669
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99400.36579790605,
                2366285.9731129613,
                6.194486689595361
              ],
              [
                -99400.36579790605,
                2366759.5531129614,
                6.194486689595361
              ],
              [
                -98904.52579790606,
                2366759.5531129614,
                12.45448668959536
              ],
              [
                -98904.52579790606,
                2366285.9731129613,
                12.45448668959536
              ],
              [
                -99400.36579790605,
                2366285.9731129613,
                6.194486689595361
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:00:45+00:00",
        "end_time": "2018-09-08T05:17:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2018.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2018.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2018.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2018.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7069721,
            71.27573174,
            6.19448669,
            -156.6929611,
            71.28026367,
            12.45448669
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7064468296493,
                  71.27573174444122,
                  6.194486689595361
                ],
                [
                  -156.7069721301228,
                  71.28007851691366,
                  6.194486689595361
                ],
                [
                  -156.69348374967436,
                  71.28026366657998,
                  12.45448668959536
                ],
                [
                  -156.69296106092747,
                  71.27591685278084,
                  12.45448668959536
                ],
                [
                  -156.7064468296493,
                  71.27573174444122,
                  6.194486689595361
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2018.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2018.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:00:45Z",
            "pc:count": 3409955,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99152.1807,
                "count": 3409955,
                "maximum": -98904.5258,
                "minimum": -99400.3658,
                "name": "X",
                "position": 0,
                "stddev": 134.961618,
                "variance": 18214.63832
              },
              {
                "average": 2366518.286,
                "count": 3409955,
                "maximum": 2366759.553,
                "minimum": 2366285.973,
                "name": "Y",
                "position": 1,
                "stddev": 127.758098,
                "variance": 16322.1316
              },
              {
                "average": 9.70963625,
                "count": 3409955,
                "maximum": 12.45448669,
                "minimum": 6.19448669,
                "name": "Z",
                "position": 2,
                "stddev": 1.302493166,
                "variance": 1.696488448
              },
              {
                "average": 44717.4957,
                "count": 3409955,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9692.380427,
                "variance": 93942238.34
              },
              {
                "average": 1,
                "count": 3409955,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3409955,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5020843384,
                "count": 3409955,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999957288,
                "variance": 0.2499957288
              },
              {
                "average": 0.0003979524656,
                "count": 3409955,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01994477917,
                "variance": 0.0003977942161
              },
              {
                "average": 1.301991082,
                "count": 3409955,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4595268972,
                "variance": 0.2111649692
              },
              {
                "average": 1.476057435,
                "count": 3409955,
                "maximum": 20.52599907,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73219029,
                "variance": 115.1799084
              },
              {
                "average": 0.5229693647,
                "count": 3409955,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994722029,
                "variance": 0.2494724814
              },
              {
                "average": 415.6139885,
                "count": 3409955,
                "maximum": 460,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 7.879590958,
                "variance": 62.08795366
              },
              {
                "average": 220428816.3,
                "count": 3409955,
                "maximum": 220724045.3,
                "minimum": 220419029.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 52041.32039,
                "variance": 2708299028
              },
              {
                "average": 0.5229693647,
                "count": 3409955,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994722029,
                "variance": 0.2494724814
              },
              {
                "average": 0,
                "count": 3409955,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3409955,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3409955,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.254167577,
                "count": 3409955,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4353923235,
                "variance": 0.1895664754
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99400.3658,
              2366285.973,
              6.19448669,
              -98904.5258,
              2366759.553,
              12.45448669
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99400.36579790605,
                    2366285.9731129613,
                    6.194486689595361
                  ],
                  [
                    -99400.36579790605,
                    2366759.5531129614,
                    6.194486689595361
                  ],
                  [
                    -98904.52579790606,
                    2366759.5531129614,
                    12.45448668959536
                  ],
                  [
                    -98904.52579790606,
                    2366285.9731129613,
                    12.45448668959536
                  ],
                  [
                    -99400.36579790605,
                    2366285.9731129613,
                    6.194486689595361
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:00:45+00:00",
            "end_time": "2018-09-08T05:17:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2122.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65458322334635,
              71.28766434003924,
              5.520607182095477
            ],
            [
              -156.65509880275076,
              71.29201215002551,
              5.520607182095477
            ],
            [
              -156.6415995454648,
              71.29219380292676,
              8.360607182095476
            ],
            [
              -156.64108658186402,
              71.28784595235672,
              8.360607182095476
            ],
            [
              -156.65458322334635,
              71.28766434003924,
              5.520607182095477
            ]
          ]
        ]
      },
      "bbox": [
        -156.6550988,
        71.28766434,
        5.520607182,
        -156.6410866,
        71.2921938,
        8.360607182
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:14Z",
        "pc:count": 3799036,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97188.80636,
            "count": 3799036,
            "maximum": -96948.71489,
            "minimum": -97444.67489,
            "name": "X",
            "position": 0,
            "stddev": 133.4788341,
            "variance": 17816.59914
          },
          {
            "average": 2367736.015,
            "count": 3799036,
            "maximum": 2367980.633,
            "minimum": 2367506.993,
            "name": "Y",
            "position": 1,
            "stddev": 130.2673895,
            "variance": 16969.59276
          },
          {
            "average": 6.374320727,
            "count": 3799036,
            "maximum": 8.360607182,
            "minimum": 5.520607182,
            "name": "Z",
            "position": 2,
            "stddev": 0.6967391606,
            "variance": 0.4854454579
          },
          {
            "average": 39290.27542,
            "count": 3799036,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12555.24364,
            "variance": 157634142.9
          },
          {
            "average": 1,
            "count": 3799036,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3799036,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4978241849,
            "count": 3799036,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999953316,
            "variance": 0.2499953316
          },
          {
            "average": 0.0004540625569,
            "count": 3799036,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02130390818,
            "variance": 0.0004538565036
          },
          {
            "average": 1.267228581,
            "count": 3799036,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4427280122,
            "variance": 0.1960080928
          },
          {
            "average": 1.797435996,
            "count": 3799036,
            "maximum": 20.40600014,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51122185,
            "variance": 110.4857848
          },
          {
            "average": 0.4907500218,
            "count": 3799036,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999144964,
            "variance": 0.2499145037
          },
          {
            "average": 422.944885,
            "count": 3799036,
            "maximum": 458,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.45660958,
            "variance": 270.8199987
          },
          {
            "average": 220476526.7,
            "count": 3799036,
            "maximum": 220723474.9,
            "minimum": 220418994.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 118041.8552,
            "variance": 13933879570.0
          },
          {
            "average": 0.4907500218,
            "count": 3799036,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999144964,
            "variance": 0.2499145037
          },
          {
            "average": 0,
            "count": 3799036,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3799036,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3799036,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2218547021,
            "count": 3799036,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4154939695,
            "variance": 0.1726352387
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97444.67489,
          2367506.993,
          5.520607182,
          -96948.71489,
          2367980.633,
          8.360607182
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97444.67489093172,
                2367506.993482067,
                5.520607182095477
              ],
              [
                -97444.67489093172,
                2367980.6334820664,
                5.520607182095477
              ],
              [
                -96948.71489093173,
                2367980.6334820664,
                8.360607182095476
              ],
              [
                -96948.71489093173,
                2367506.993482067,
                8.360607182095476
              ],
              [
                -97444.67489093172,
                2367506.993482067,
                5.520607182095477
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:14+00:00",
        "end_time": "2018-09-08T05:16:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2122.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2122.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2122.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2122.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6550988,
            71.28766434,
            5.520607182,
            -156.6410866,
            71.2921938,
            8.360607182
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65458322334635,
                  71.28766434003924,
                  5.520607182095477
                ],
                [
                  -156.65509880275076,
                  71.29201215002551,
                  5.520607182095477
                ],
                [
                  -156.6415995454648,
                  71.29219380292676,
                  8.360607182095476
                ],
                [
                  -156.64108658186402,
                  71.28784595235672,
                  8.360607182095476
                ],
                [
                  -156.65458322334635,
                  71.28766434003924,
                  5.520607182095477
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2122.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2122.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:14Z",
            "pc:count": 3799036,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97188.80636,
                "count": 3799036,
                "maximum": -96948.71489,
                "minimum": -97444.67489,
                "name": "X",
                "position": 0,
                "stddev": 133.4788341,
                "variance": 17816.59914
              },
              {
                "average": 2367736.015,
                "count": 3799036,
                "maximum": 2367980.633,
                "minimum": 2367506.993,
                "name": "Y",
                "position": 1,
                "stddev": 130.2673895,
                "variance": 16969.59276
              },
              {
                "average": 6.374320727,
                "count": 3799036,
                "maximum": 8.360607182,
                "minimum": 5.520607182,
                "name": "Z",
                "position": 2,
                "stddev": 0.6967391606,
                "variance": 0.4854454579
              },
              {
                "average": 39290.27542,
                "count": 3799036,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12555.24364,
                "variance": 157634142.9
              },
              {
                "average": 1,
                "count": 3799036,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3799036,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4978241849,
                "count": 3799036,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999953316,
                "variance": 0.2499953316
              },
              {
                "average": 0.0004540625569,
                "count": 3799036,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02130390818,
                "variance": 0.0004538565036
              },
              {
                "average": 1.267228581,
                "count": 3799036,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4427280122,
                "variance": 0.1960080928
              },
              {
                "average": 1.797435996,
                "count": 3799036,
                "maximum": 20.40600014,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51122185,
                "variance": 110.4857848
              },
              {
                "average": 0.4907500218,
                "count": 3799036,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999144964,
                "variance": 0.2499145037
              },
              {
                "average": 422.944885,
                "count": 3799036,
                "maximum": 458,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.45660958,
                "variance": 270.8199987
              },
              {
                "average": 220476526.7,
                "count": 3799036,
                "maximum": 220723474.9,
                "minimum": 220418994.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 118041.8552,
                "variance": 13933879570.0
              },
              {
                "average": 0.4907500218,
                "count": 3799036,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999144964,
                "variance": 0.2499145037
              },
              {
                "average": 0,
                "count": 3799036,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3799036,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3799036,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2218547021,
                "count": 3799036,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4154939695,
                "variance": 0.1726352387
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97444.67489,
              2367506.993,
              5.520607182,
              -96948.71489,
              2367980.633,
              8.360607182
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97444.67489093172,
                    2367506.993482067,
                    5.520607182095477
                  ],
                  [
                    -97444.67489093172,
                    2367980.6334820664,
                    5.520607182095477
                  ],
                  [
                    -96948.71489093173,
                    2367980.6334820664,
                    8.360607182095476
                  ],
                  [
                    -96948.71489093173,
                    2367506.993482067,
                    8.360607182095476
                  ],
                  [
                    -97444.67489093172,
                    2367506.993482067,
                    5.520607182095477
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:14+00:00",
            "end_time": "2018-09-08T05:16:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1882.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80923514529616,
              71.26411315931684,
              1.964183290122691
            ],
            [
              -156.80978019399646,
              71.26846004679044,
              1.964183290122691
            ],
            [
              -156.79630510445645,
              71.26865214962729,
              441.3641832901227
            ],
            [
              -156.79576266349503,
              71.26430521930264,
              441.3641832901227
            ],
            [
              -156.80923514529616,
              71.26411315931684,
              1.964183290122691
            ]
          ]
        ]
      },
      "bbox": [
        -156.8097802,
        71.26411316,
        1.96418329,
        -156.7957627,
        71.26865215,
        441.3641833
      ],
      "properties": {
        "datetime": "2018-09-08T05:04:57Z",
        "pc:count": 3019416,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102972.9395,
            "count": 3019416,
            "maximum": -102731.1364,
            "minimum": -103226.7764,
            "name": "X",
            "position": 0,
            "stddev": 133.6116397,
            "variance": 17852.07027
          },
          {
            "average": 2365418.419,
            "count": 3019416,
            "maximum": 2365652.673,
            "minimum": 2365179.013,
            "name": "Y",
            "position": 1,
            "stddev": 127.2775282,
            "variance": 16199.56917
          },
          {
            "average": 7.452285592,
            "count": 3019416,
            "maximum": 441.3641833,
            "minimum": 1.96418329,
            "name": "Z",
            "position": 2,
            "stddev": 2.104255215,
            "variance": 4.42789001
          },
          {
            "average": 47288.79139,
            "count": 3019416,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 6661.679127,
            "variance": 44377968.79
          },
          {
            "average": 1.000003643,
            "count": 3019416,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001908684503,
            "variance": 3.643076532e-06
          },
          {
            "average": 1.000007286,
            "count": 3019416,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002699282593,
            "variance": 7.286126519e-06
          },
          {
            "average": 0.5000867717,
            "count": 3019416,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000753,
            "variance": 0.2500000753
          },
          {
            "average": 0.0004202799482,
            "count": 3019416,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02049642535,
            "variance": 0.0004201034521
          },
          {
            "average": 1.32412493,
            "count": 3019416,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6472269838,
            "variance": 0.4189027685
          },
          {
            "average": 1.393305084,
            "count": 3019416,
            "maximum": 16.40399933,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61141663,
            "variance": 112.602163
          },
          {
            "average": 0.5112905939,
            "count": 3019416,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499872589,
            "variance": 0.2498726052
          },
          {
            "average": 410.0378951,
            "count": 3019416,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9470924036,
            "variance": 0.8969840209
          },
          {
            "average": 220417365.6,
            "count": 3019416,
            "maximum": 220418297.4,
            "minimum": 220416043.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.7290904,
            "variance": 276391.0765
          },
          {
            "average": 0.5112905939,
            "count": 3019416,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499872589,
            "variance": 0.2498726052
          },
          {
            "average": 0,
            "count": 3019416,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3019416,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3019416,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2539520887,
            "count": 3019416,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4352705918,
            "variance": 0.1894604881
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103226.7764,
          2365179.013,
          1.96418329,
          -102731.1364,
          2365652.673,
          441.3641833
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103226.7763705877,
                2365179.012978144,
                1.964183290122691
              ],
              [
                -103226.7763705877,
                2365652.672978144,
                1.964183290122691
              ],
              [
                -102731.13637058769,
                2365652.672978144,
                441.3641832901227
              ],
              [
                -102731.13637058769,
                2365179.012978144,
                441.3641832901227
              ],
              [
                -103226.7763705877,
                2365179.012978144,
                1.964183290122691
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:04:57+00:00",
        "end_time": "2018-09-08T04:27:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1882.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1882.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1882.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1882.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8097802,
            71.26411316,
            1.96418329,
            -156.7957627,
            71.26865215,
            441.3641833
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80923514529616,
                  71.26411315931684,
                  1.964183290122691
                ],
                [
                  -156.80978019399646,
                  71.26846004679044,
                  1.964183290122691
                ],
                [
                  -156.79630510445645,
                  71.26865214962729,
                  441.3641832901227
                ],
                [
                  -156.79576266349503,
                  71.26430521930264,
                  441.3641832901227
                ],
                [
                  -156.80923514529616,
                  71.26411315931684,
                  1.964183290122691
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1882.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1882.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:04:57Z",
            "pc:count": 3019416,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102972.9395,
                "count": 3019416,
                "maximum": -102731.1364,
                "minimum": -103226.7764,
                "name": "X",
                "position": 0,
                "stddev": 133.6116397,
                "variance": 17852.07027
              },
              {
                "average": 2365418.419,
                "count": 3019416,
                "maximum": 2365652.673,
                "minimum": 2365179.013,
                "name": "Y",
                "position": 1,
                "stddev": 127.2775282,
                "variance": 16199.56917
              },
              {
                "average": 7.452285592,
                "count": 3019416,
                "maximum": 441.3641833,
                "minimum": 1.96418329,
                "name": "Z",
                "position": 2,
                "stddev": 2.104255215,
                "variance": 4.42789001
              },
              {
                "average": 47288.79139,
                "count": 3019416,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 6661.679127,
                "variance": 44377968.79
              },
              {
                "average": 1.000003643,
                "count": 3019416,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001908684503,
                "variance": 3.643076532e-06
              },
              {
                "average": 1.000007286,
                "count": 3019416,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002699282593,
                "variance": 7.286126519e-06
              },
              {
                "average": 0.5000867717,
                "count": 3019416,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000753,
                "variance": 0.2500000753
              },
              {
                "average": 0.0004202799482,
                "count": 3019416,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02049642535,
                "variance": 0.0004201034521
              },
              {
                "average": 1.32412493,
                "count": 3019416,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6472269838,
                "variance": 0.4189027685
              },
              {
                "average": 1.393305084,
                "count": 3019416,
                "maximum": 16.40399933,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61141663,
                "variance": 112.602163
              },
              {
                "average": 0.5112905939,
                "count": 3019416,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499872589,
                "variance": 0.2498726052
              },
              {
                "average": 410.0378951,
                "count": 3019416,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9470924036,
                "variance": 0.8969840209
              },
              {
                "average": 220417365.6,
                "count": 3019416,
                "maximum": 220418297.4,
                "minimum": 220416043.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.7290904,
                "variance": 276391.0765
              },
              {
                "average": 0.5112905939,
                "count": 3019416,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499872589,
                "variance": 0.2498726052
              },
              {
                "average": 0,
                "count": 3019416,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3019416,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3019416,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2539520887,
                "count": 3019416,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4352705918,
                "variance": 0.1894604881
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103226.7764,
              2365179.013,
              1.96418329,
              -102731.1364,
              2365652.673,
              441.3641833
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103226.7763705877,
                    2365179.012978144,
                    1.964183290122691
                  ],
                  [
                    -103226.7763705877,
                    2365652.672978144,
                    1.964183290122691
                  ],
                  [
                    -102731.13637058769,
                    2365652.672978144,
                    441.3641832901227
                  ],
                  [
                    -102731.13637058769,
                    2365179.012978144,
                    441.3641832901227
                  ],
                  [
                    -103226.7763705877,
                    2365179.012978144,
                    1.964183290122691
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:04:57+00:00",
            "end_time": "2018-09-08T04:27:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2086.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70590301574788,
              71.28392500429004,
              5.350584141216934
            ],
            [
              -156.70642849160026,
              71.28827275250667,
              5.350584141216934
            ],
            [
              -156.69293245118354,
              71.28845791221421,
              13.430584141216933
            ],
            [
              -156.69240958994084,
              71.2841101226398,
              13.430584141216933
            ],
            [
              -156.70590301574788,
              71.28392500429004,
              5.350584141216934
            ]
          ]
        ]
      },
      "bbox": [
        -156.7064285,
        71.283925,
        5.350584141,
        -156.6924096,
        71.28845791,
        13.43058414
      ],
      "properties": {
        "datetime": "2018-09-08T05:24:09Z",
        "pc:count": 3278206,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99092.13959,
            "count": 3278206,
            "maximum": -98848.13381,
            "minimum": -99344.07381,
            "name": "X",
            "position": 0,
            "stddev": 133.6717991,
            "variance": 17868.14987
          },
          {
            "average": 2367412.774,
            "count": 3278206,
            "maximum": 2367649.98,
            "minimum": 2367176.32,
            "name": "Y",
            "position": 1,
            "stddev": 128.1234506,
            "variance": 16415.6186
          },
          {
            "average": 6.143038218,
            "count": 3278206,
            "maximum": 13.43058414,
            "minimum": 5.350584141,
            "name": "Z",
            "position": 2,
            "stddev": 0.3896583856,
            "variance": 0.1518336575
          },
          {
            "average": 33435.9431,
            "count": 3278206,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11866.30051,
            "variance": 140809087.9
          },
          {
            "average": 1.000006101,
            "count": 3278206,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002590550614,
            "variance": 6.710952482e-06
          },
          {
            "average": 1.000012202,
            "count": 3278206,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003745920514,
            "variance": 1.40319205e-05
          },
          {
            "average": 0.5012445832,
            "count": 3278206,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999985273,
            "variance": 0.2499985273
          },
          {
            "average": 0.0004526866219,
            "count": 3278206,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02127162041,
            "variance": 0.0004524818347
          },
          {
            "average": 1.253347715,
            "count": 3278206,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4351177225,
            "variance": 0.1893274324
          },
          {
            "average": 2.044458423,
            "count": 3278206,
            "maximum": 16.38599968,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.6896203,
            "variance": 114.2679821
          },
          {
            "average": 0.5446384394,
            "count": 3278206,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980034994,
            "variance": 0.2480074854
          },
          {
            "average": 412.4969129,
            "count": 3278206,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.033106858,
            "variance": 1.067309781
          },
          {
            "average": 220418687.5,
            "count": 3278206,
            "maximum": 220419449.9,
            "minimum": 220417919.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 547.5057951,
            "variance": 299762.5957
          },
          {
            "average": 0.5446384394,
            "count": 3278206,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980034994,
            "variance": 0.2480074854
          },
          {
            "average": 0,
            "count": 3278206,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3278206,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3278206,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2798140202,
            "count": 3278206,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4489077809,
            "variance": 0.2015181958
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99344.07381,
          2367176.32,
          5.350584141,
          -98848.13381,
          2367649.98,
          13.43058414
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99344.07380761893,
                2367176.3201907976,
                5.350584141216934
              ],
              [
                -99344.07380761893,
                2367649.9801907977,
                5.350584141216934
              ],
              [
                -98848.13380761893,
                2367649.9801907977,
                13.430584141216933
              ],
              [
                -98848.13380761893,
                2367176.3201907976,
                13.430584141216933
              ],
              [
                -99344.07380761893,
                2367176.3201907976,
                5.350584141216934
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:24:09+00:00",
        "end_time": "2018-09-08T04:58:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2086.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2086.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2086.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2086.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7064285,
            71.283925,
            5.350584141,
            -156.6924096,
            71.28845791,
            13.43058414
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70590301574788,
                  71.28392500429004,
                  5.350584141216934
                ],
                [
                  -156.70642849160026,
                  71.28827275250667,
                  5.350584141216934
                ],
                [
                  -156.69293245118354,
                  71.28845791221421,
                  13.430584141216933
                ],
                [
                  -156.69240958994084,
                  71.2841101226398,
                  13.430584141216933
                ],
                [
                  -156.70590301574788,
                  71.28392500429004,
                  5.350584141216934
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2086.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2086.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:24:09Z",
            "pc:count": 3278206,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99092.13959,
                "count": 3278206,
                "maximum": -98848.13381,
                "minimum": -99344.07381,
                "name": "X",
                "position": 0,
                "stddev": 133.6717991,
                "variance": 17868.14987
              },
              {
                "average": 2367412.774,
                "count": 3278206,
                "maximum": 2367649.98,
                "minimum": 2367176.32,
                "name": "Y",
                "position": 1,
                "stddev": 128.1234506,
                "variance": 16415.6186
              },
              {
                "average": 6.143038218,
                "count": 3278206,
                "maximum": 13.43058414,
                "minimum": 5.350584141,
                "name": "Z",
                "position": 2,
                "stddev": 0.3896583856,
                "variance": 0.1518336575
              },
              {
                "average": 33435.9431,
                "count": 3278206,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11866.30051,
                "variance": 140809087.9
              },
              {
                "average": 1.000006101,
                "count": 3278206,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002590550614,
                "variance": 6.710952482e-06
              },
              {
                "average": 1.000012202,
                "count": 3278206,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003745920514,
                "variance": 1.40319205e-05
              },
              {
                "average": 0.5012445832,
                "count": 3278206,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999985273,
                "variance": 0.2499985273
              },
              {
                "average": 0.0004526866219,
                "count": 3278206,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02127162041,
                "variance": 0.0004524818347
              },
              {
                "average": 1.253347715,
                "count": 3278206,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4351177225,
                "variance": 0.1893274324
              },
              {
                "average": 2.044458423,
                "count": 3278206,
                "maximum": 16.38599968,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.6896203,
                "variance": 114.2679821
              },
              {
                "average": 0.5446384394,
                "count": 3278206,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980034994,
                "variance": 0.2480074854
              },
              {
                "average": 412.4969129,
                "count": 3278206,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.033106858,
                "variance": 1.067309781
              },
              {
                "average": 220418687.5,
                "count": 3278206,
                "maximum": 220419449.9,
                "minimum": 220417919.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 547.5057951,
                "variance": 299762.5957
              },
              {
                "average": 0.5446384394,
                "count": 3278206,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980034994,
                "variance": 0.2480074854
              },
              {
                "average": 0,
                "count": 3278206,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3278206,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3278206,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2798140202,
                "count": 3278206,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4489077809,
                "variance": 0.2015181958
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99344.07381,
              2367176.32,
              5.350584141,
              -98848.13381,
              2367649.98,
              13.43058414
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99344.07380761893,
                    2367176.3201907976,
                    5.350584141216934
                  ],
                  [
                    -99344.07380761893,
                    2367649.9801907977,
                    5.350584141216934
                  ],
                  [
                    -98848.13380761893,
                    2367649.9801907977,
                    13.430584141216933
                  ],
                  [
                    -98848.13380761893,
                    2367176.3201907976,
                    13.430584141216933
                  ],
                  [
                    -99344.07380761893,
                    2367176.3201907976,
                    5.350584141216934
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:24:09+00:00",
            "end_time": "2018-09-08T04:58:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2174.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73061439312636,
              71.29638927165993,
              -10.344174172305088
            ],
            [
              -156.73114500516266,
              71.30073768664074,
              -10.344174172305088
            ],
            [
              -156.71764492326471,
              71.30092451098005,
              29.37582582769491
            ],
            [
              -156.7171169281783,
              71.29657605423323,
              29.37582582769491
            ],
            [
              -156.73061439312636,
              71.29638927165993,
              -10.344174172305088
            ]
          ]
        ]
      },
      "bbox": [
        -156.731145,
        71.29638927,
        -10.34417417,
        -156.7171169,
        71.30092451,
        29.37582583
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:38Z",
        "pc:count": 2939223,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99942.27285,
            "count": 2939223,
            "maximum": -99699.22504,
            "minimum": -100195.045,
            "name": "X",
            "position": 0,
            "stddev": 136.9055383,
            "variance": 18743.12641
          },
          {
            "average": 2368804.635,
            "count": 2939223,
            "maximum": 2369042.748,
            "minimum": 2368569.048,
            "name": "Y",
            "position": 1,
            "stddev": 128.5308218,
            "variance": 16520.17214
          },
          {
            "average": 9.0380345,
            "count": 2939223,
            "maximum": 29.37582583,
            "minimum": -10.34417417,
            "name": "Z",
            "position": 2,
            "stddev": 2.755370227,
            "variance": 7.592065087
          },
          {
            "average": 34835.28721,
            "count": 2939223,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12742.92303,
            "variance": 162382087.5
          },
          {
            "average": 1.020916412,
            "count": 2939223,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1472525833,
            "variance": 0.02168332328
          },
          {
            "average": 1.041817514,
            "count": 2939223,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2089926836,
            "variance": 0.04367794181
          },
          {
            "average": 0.5020894978,
            "count": 2939223,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499995719,
            "variance": 0.2499957191
          },
          {
            "average": 0.0003773106022,
            "count": 2939223,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01942082303,
            "variance": 0.0003771683672
          },
          {
            "average": 1.787886118,
            "count": 2939223,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.432458997,
            "variance": 2.051938778
          },
          {
            "average": 0.3385820913,
            "count": 2939223,
            "maximum": 16.31399918,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32805753,
            "variance": 106.6687723
          },
          {
            "average": 0.4993921863,
            "count": 2939223,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999997156,
            "variance": 0.2499997156
          },
          {
            "average": 408.0945617,
            "count": 2939223,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9083658147,
            "variance": 0.8251284534
          },
          {
            "average": 220416238.3,
            "count": 2939223,
            "maximum": 220417258.9,
            "minimum": 220414994.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 519.1991406,
            "variance": 269567.7476
          },
          {
            "average": 0.4993921863,
            "count": 2939223,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999997156,
            "variance": 0.2499997156
          },
          {
            "average": 0,
            "count": 2939223,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2939223,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2939223,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2267708166,
            "count": 2939223,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4187432065,
            "variance": 0.175345873
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100195.045,
          2368569.048,
          -10.34417417,
          -99699.22504,
          2369042.748,
          29.37582583
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100195.04503930418,
                2368569.0475457963,
                -10.344174172305088
              ],
              [
                -100195.04503930418,
                2369042.7475457964,
                -10.344174172305088
              ],
              [
                -99699.22503930418,
                2369042.7475457964,
                29.37582582769491
              ],
              [
                -99699.22503930418,
                2368569.0475457963,
                29.37582582769491
              ],
              [
                -100195.04503930418,
                2368569.0475457963,
                -10.344174172305088
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:38+00:00",
        "end_time": "2018-09-08T04:09:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2174.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2174.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2174.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2174.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.731145,
            71.29638927,
            -10.34417417,
            -156.7171169,
            71.30092451,
            29.37582583
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73061439312636,
                  71.29638927165993,
                  -10.344174172305088
                ],
                [
                  -156.73114500516266,
                  71.30073768664074,
                  -10.344174172305088
                ],
                [
                  -156.71764492326471,
                  71.30092451098005,
                  29.37582582769491
                ],
                [
                  -156.7171169281783,
                  71.29657605423323,
                  29.37582582769491
                ],
                [
                  -156.73061439312636,
                  71.29638927165993,
                  -10.344174172305088
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2174.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2174.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:38Z",
            "pc:count": 2939223,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99942.27285,
                "count": 2939223,
                "maximum": -99699.22504,
                "minimum": -100195.045,
                "name": "X",
                "position": 0,
                "stddev": 136.9055383,
                "variance": 18743.12641
              },
              {
                "average": 2368804.635,
                "count": 2939223,
                "maximum": 2369042.748,
                "minimum": 2368569.048,
                "name": "Y",
                "position": 1,
                "stddev": 128.5308218,
                "variance": 16520.17214
              },
              {
                "average": 9.0380345,
                "count": 2939223,
                "maximum": 29.37582583,
                "minimum": -10.34417417,
                "name": "Z",
                "position": 2,
                "stddev": 2.755370227,
                "variance": 7.592065087
              },
              {
                "average": 34835.28721,
                "count": 2939223,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12742.92303,
                "variance": 162382087.5
              },
              {
                "average": 1.020916412,
                "count": 2939223,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1472525833,
                "variance": 0.02168332328
              },
              {
                "average": 1.041817514,
                "count": 2939223,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2089926836,
                "variance": 0.04367794181
              },
              {
                "average": 0.5020894978,
                "count": 2939223,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499995719,
                "variance": 0.2499957191
              },
              {
                "average": 0.0003773106022,
                "count": 2939223,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01942082303,
                "variance": 0.0003771683672
              },
              {
                "average": 1.787886118,
                "count": 2939223,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.432458997,
                "variance": 2.051938778
              },
              {
                "average": 0.3385820913,
                "count": 2939223,
                "maximum": 16.31399918,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32805753,
                "variance": 106.6687723
              },
              {
                "average": 0.4993921863,
                "count": 2939223,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999997156,
                "variance": 0.2499997156
              },
              {
                "average": 408.0945617,
                "count": 2939223,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9083658147,
                "variance": 0.8251284534
              },
              {
                "average": 220416238.3,
                "count": 2939223,
                "maximum": 220417258.9,
                "minimum": 220414994.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 519.1991406,
                "variance": 269567.7476
              },
              {
                "average": 0.4993921863,
                "count": 2939223,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999997156,
                "variance": 0.2499997156
              },
              {
                "average": 0,
                "count": 2939223,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2939223,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2939223,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2267708166,
                "count": 2939223,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4187432065,
                "variance": 0.175345873
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100195.045,
              2368569.048,
              -10.34417417,
              -99699.22504,
              2369042.748,
              29.37582583
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100195.04503930418,
                    2368569.0475457963,
                    -10.344174172305088
                  ],
                  [
                    -100195.04503930418,
                    2369042.7475457964,
                    -10.344174172305088
                  ],
                  [
                    -99699.22503930418,
                    2369042.7475457964,
                    29.37582582769491
                  ],
                  [
                    -99699.22503930418,
                    2368569.0475457963,
                    29.37582582769491
                  ],
                  [
                    -100195.04503930418,
                    2368569.0475457963,
                    -10.344174172305088
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:38+00:00",
            "end_time": "2018-09-08T04:09:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1676.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77202839951815,
              71.24747930282228,
              9.474468488275004
            ],
            [
              -156.77256594825982,
              71.25182672543293,
              9.474468488275004
            ],
            [
              -156.75910270762287,
              71.25201622798303,
              64.154468488275
            ],
            [
              -156.758567763129,
              71.24766876313666,
              64.154468488275
            ],
            [
              -156.77202839951815,
              71.24747930282228,
              9.474468488275004
            ]
          ]
        ]
      },
      "bbox": [
        -156.7725659,
        71.2474793,
        9.474468488,
        -156.7585678,
        71.25201623,
        64.15446849
      ],
      "properties": {
        "datetime": "2018-09-11T18:37:39Z",
        "pc:count": 3253177,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101680.5033,
            "count": 3253177,
            "maximum": -101440.4058,
            "minimum": -101935.9658,
            "name": "X",
            "position": 0,
            "stddev": 127.1733285,
            "variance": 16173.05549
          },
          {
            "average": 2363542.915,
            "count": 3253177,
            "maximum": 2363785.881,
            "minimum": 2363312.121,
            "name": "Y",
            "position": 1,
            "stddev": 129.1998704,
            "variance": 16692.60651
          },
          {
            "average": 9.891515163,
            "count": 3253177,
            "maximum": 64.15446849,
            "minimum": 9.474468488,
            "name": "Z",
            "position": 2,
            "stddev": 0.1787638177,
            "variance": 0.03195650253
          },
          {
            "average": 30349.56851,
            "count": 3253177,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11570.7584,
            "variance": 133882449.8
          },
          {
            "average": 1.000000615,
            "count": 3253177,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007840812788,
            "variance": 6.147834518e-07
          },
          {
            "average": 1.00000123,
            "count": 3253177,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001108858038,
            "variance": 1.229566148e-06
          },
          {
            "average": 0.5048089913,
            "count": 3253177,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999769499,
            "variance": 0.2499769504
          },
          {
            "average": 0.00050996303,
            "count": 3253177,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02257660569,
            "variance": 0.0005097031244
          },
          {
            "average": 2.103583051,
            "count": 3253177,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.479649172,
            "variance": 6.148660019
          },
          {
            "average": -0.6422524941,
            "count": 3253177,
            "maximum": 16.40399933,
            "minimum": -19.6079998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.56031318,
            "variance": 111.5202145
          },
          {
            "average": 0.5144454175,
            "count": 3253177,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997913632,
            "variance": 0.2497914067
          },
          {
            "average": 426.8548474,
            "count": 3253177,
            "maximum": 465,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.94488547,
            "variance": 397.7984563
          },
          {
            "average": 220488016.3,
            "count": 3253177,
            "maximum": 220726259.5,
            "minimum": 220419367.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 126482.7337,
            "variance": 15997881930.0
          },
          {
            "average": 0.5144454175,
            "count": 3253177,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997913632,
            "variance": 0.2497914067
          },
          {
            "average": 0,
            "count": 3253177,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3253177,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3253177,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2219959135,
            "count": 3253177,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4155884755,
            "variance": 0.172713781
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101935.9658,
          2363312.121,
          9.474468488,
          -101440.4058,
          2363785.881,
          64.15446849
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101935.96581187175,
                2363312.121080314,
                9.474468488275004
              ],
              [
                -101935.96581187175,
                2363785.8810803136,
                9.474468488275004
              ],
              [
                -101440.40581187175,
                2363785.8810803136,
                64.154468488275
              ],
              [
                -101440.40581187175,
                2363312.121080314,
                64.154468488275
              ],
              [
                -101935.96581187175,
                2363312.121080314,
                9.474468488275004
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:37:39+00:00",
        "end_time": "2018-09-08T05:22:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1676.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1676.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1676.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1676.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7725659,
            71.2474793,
            9.474468488,
            -156.7585678,
            71.25201623,
            64.15446849
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77202839951815,
                  71.24747930282228,
                  9.474468488275004
                ],
                [
                  -156.77256594825982,
                  71.25182672543293,
                  9.474468488275004
                ],
                [
                  -156.75910270762287,
                  71.25201622798303,
                  64.154468488275
                ],
                [
                  -156.758567763129,
                  71.24766876313666,
                  64.154468488275
                ],
                [
                  -156.77202839951815,
                  71.24747930282228,
                  9.474468488275004
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1676.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1676.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:37:39Z",
            "pc:count": 3253177,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101680.5033,
                "count": 3253177,
                "maximum": -101440.4058,
                "minimum": -101935.9658,
                "name": "X",
                "position": 0,
                "stddev": 127.1733285,
                "variance": 16173.05549
              },
              {
                "average": 2363542.915,
                "count": 3253177,
                "maximum": 2363785.881,
                "minimum": 2363312.121,
                "name": "Y",
                "position": 1,
                "stddev": 129.1998704,
                "variance": 16692.60651
              },
              {
                "average": 9.891515163,
                "count": 3253177,
                "maximum": 64.15446849,
                "minimum": 9.474468488,
                "name": "Z",
                "position": 2,
                "stddev": 0.1787638177,
                "variance": 0.03195650253
              },
              {
                "average": 30349.56851,
                "count": 3253177,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11570.7584,
                "variance": 133882449.8
              },
              {
                "average": 1.000000615,
                "count": 3253177,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007840812788,
                "variance": 6.147834518e-07
              },
              {
                "average": 1.00000123,
                "count": 3253177,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001108858038,
                "variance": 1.229566148e-06
              },
              {
                "average": 0.5048089913,
                "count": 3253177,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999769499,
                "variance": 0.2499769504
              },
              {
                "average": 0.00050996303,
                "count": 3253177,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02257660569,
                "variance": 0.0005097031244
              },
              {
                "average": 2.103583051,
                "count": 3253177,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.479649172,
                "variance": 6.148660019
              },
              {
                "average": -0.6422524941,
                "count": 3253177,
                "maximum": 16.40399933,
                "minimum": -19.6079998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.56031318,
                "variance": 111.5202145
              },
              {
                "average": 0.5144454175,
                "count": 3253177,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997913632,
                "variance": 0.2497914067
              },
              {
                "average": 426.8548474,
                "count": 3253177,
                "maximum": 465,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.94488547,
                "variance": 397.7984563
              },
              {
                "average": 220488016.3,
                "count": 3253177,
                "maximum": 220726259.5,
                "minimum": 220419367.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 126482.7337,
                "variance": 15997881930.0
              },
              {
                "average": 0.5144454175,
                "count": 3253177,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997913632,
                "variance": 0.2497914067
              },
              {
                "average": 0,
                "count": 3253177,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3253177,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3253177,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2219959135,
                "count": 3253177,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4155884755,
                "variance": 0.172713781
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101935.9658,
              2363312.121,
              9.474468488,
              -101440.4058,
              2363785.881,
              64.15446849
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101935.96581187175,
                    2363312.121080314,
                    9.474468488275004
                  ],
                  [
                    -101935.96581187175,
                    2363785.8810803136,
                    9.474468488275004
                  ],
                  [
                    -101440.40581187175,
                    2363785.8810803136,
                    64.154468488275
                  ],
                  [
                    -101440.40581187175,
                    2363312.121080314,
                    64.154468488275
                  ],
                  [
                    -101935.96581187175,
                    2363312.121080314,
                    9.474468488275004
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:37:39+00:00",
            "end_time": "2018-09-08T05:22:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1785.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73329030813142,
              71.25541999543127,
              9.304526258935852
            ],
            [
              -156.73382049201746,
              71.25976738750096,
              9.304526258935852
            ],
            [
              -156.72034781111736,
              71.25995430684242,
              13.644526258935851
            ],
            [
              -156.71982023419682,
              71.25560687309395,
              13.644526258935851
            ],
            [
              -156.73329030813142,
              71.25541999543127,
              9.304526258935852
            ]
          ]
        ]
      },
      "bbox": [
        -156.7338205,
        71.25542,
        9.304526259,
        -156.7198202,
        71.25995431,
        13.64452626
      ],
      "properties": {
        "datetime": "2018-09-11T18:24:02Z",
        "pc:count": 3938909,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100230.6031,
            "count": 3938909,
            "maximum": -99980.96451,
            "minimum": -100476.6845,
            "name": "X",
            "position": 0,
            "stddev": 135.2713272,
            "variance": 18298.33196
          },
          {
            "average": 2364364.705,
            "count": 3938909,
            "maximum": 2364590.636,
            "minimum": 2364116.916,
            "name": "Y",
            "position": 1,
            "stddev": 126.1130619,
            "variance": 15904.50438
          },
          {
            "average": 10.31421059,
            "count": 3938909,
            "maximum": 13.64452626,
            "minimum": 9.304526259,
            "name": "Z",
            "position": 2,
            "stddev": 0.2246059676,
            "variance": 0.0504478407
          },
          {
            "average": 39101.54584,
            "count": 3938909,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10185.40697,
            "variance": 103742515.2
          },
          {
            "average": 1.000000508,
            "count": 3938909,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007125690727,
            "variance": 5.077546834e-07
          },
          {
            "average": 1.000001016,
            "count": 3938909,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001007724591,
            "variance": 1.015508851e-06
          },
          {
            "average": 0.5058687571,
            "count": 3938909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.49996562,
            "variance": 0.2499656212
          },
          {
            "average": 0.0004412389319,
            "count": 3938909,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02100105598,
            "variance": 0.0004410443521
          },
          {
            "average": 1.250889777,
            "count": 3938909,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4335428204,
            "variance": 0.1879593771
          },
          {
            "average": -2.758273974,
            "count": 3938909,
            "maximum": 16.37999916,
            "minimum": -19.65600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59375373,
            "variance": 112.2276181
          },
          {
            "average": 0.4944785472,
            "count": 3938909,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999695761,
            "variance": 0.249969577
          },
          {
            "average": 427.7148193,
            "count": 3938909,
            "maximum": 463,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.34853178,
            "variance": 374.3656819
          },
          {
            "average": 220492578.1,
            "count": 3938909,
            "maximum": 220725442.9,
            "minimum": 220420143.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128925.9259,
            "variance": 16621894360.0
          },
          {
            "average": 0.4944785472,
            "count": 3938909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999695761,
            "variance": 0.249969577
          },
          {
            "average": 0,
            "count": 3938909,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3938909,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3938909,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2033413313,
            "count": 3938909,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4024843791,
            "variance": 0.1619936754
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100476.6845,
          2364116.916,
          9.304526259,
          -99980.96451,
          2364590.636,
          13.64452626
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100476.68451388639,
                2364116.91612519,
                9.304526258935852
              ],
              [
                -100476.68451388639,
                2364590.6361251897,
                9.304526258935852
              ],
              [
                -99980.96451388639,
                2364590.6361251897,
                13.644526258935851
              ],
              [
                -99980.96451388639,
                2364116.91612519,
                13.644526258935851
              ],
              [
                -100476.68451388639,
                2364116.91612519,
                9.304526258935852
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:24:02+00:00",
        "end_time": "2018-09-08T05:35:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1785.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1785.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1785.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1785.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7338205,
            71.25542,
            9.304526259,
            -156.7198202,
            71.25995431,
            13.64452626
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73329030813142,
                  71.25541999543127,
                  9.304526258935852
                ],
                [
                  -156.73382049201746,
                  71.25976738750096,
                  9.304526258935852
                ],
                [
                  -156.72034781111736,
                  71.25995430684242,
                  13.644526258935851
                ],
                [
                  -156.71982023419682,
                  71.25560687309395,
                  13.644526258935851
                ],
                [
                  -156.73329030813142,
                  71.25541999543127,
                  9.304526258935852
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1785.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1785.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:24:02Z",
            "pc:count": 3938909,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100230.6031,
                "count": 3938909,
                "maximum": -99980.96451,
                "minimum": -100476.6845,
                "name": "X",
                "position": 0,
                "stddev": 135.2713272,
                "variance": 18298.33196
              },
              {
                "average": 2364364.705,
                "count": 3938909,
                "maximum": 2364590.636,
                "minimum": 2364116.916,
                "name": "Y",
                "position": 1,
                "stddev": 126.1130619,
                "variance": 15904.50438
              },
              {
                "average": 10.31421059,
                "count": 3938909,
                "maximum": 13.64452626,
                "minimum": 9.304526259,
                "name": "Z",
                "position": 2,
                "stddev": 0.2246059676,
                "variance": 0.0504478407
              },
              {
                "average": 39101.54584,
                "count": 3938909,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10185.40697,
                "variance": 103742515.2
              },
              {
                "average": 1.000000508,
                "count": 3938909,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007125690727,
                "variance": 5.077546834e-07
              },
              {
                "average": 1.000001016,
                "count": 3938909,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001007724591,
                "variance": 1.015508851e-06
              },
              {
                "average": 0.5058687571,
                "count": 3938909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.49996562,
                "variance": 0.2499656212
              },
              {
                "average": 0.0004412389319,
                "count": 3938909,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02100105598,
                "variance": 0.0004410443521
              },
              {
                "average": 1.250889777,
                "count": 3938909,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4335428204,
                "variance": 0.1879593771
              },
              {
                "average": -2.758273974,
                "count": 3938909,
                "maximum": 16.37999916,
                "minimum": -19.65600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59375373,
                "variance": 112.2276181
              },
              {
                "average": 0.4944785472,
                "count": 3938909,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999695761,
                "variance": 0.249969577
              },
              {
                "average": 427.7148193,
                "count": 3938909,
                "maximum": 463,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.34853178,
                "variance": 374.3656819
              },
              {
                "average": 220492578.1,
                "count": 3938909,
                "maximum": 220725442.9,
                "minimum": 220420143.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128925.9259,
                "variance": 16621894360.0
              },
              {
                "average": 0.4944785472,
                "count": 3938909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999695761,
                "variance": 0.249969577
              },
              {
                "average": 0,
                "count": 3938909,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3938909,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3938909,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2033413313,
                "count": 3938909,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4024843791,
                "variance": 0.1619936754
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100476.6845,
              2364116.916,
              9.304526259,
              -99980.96451,
              2364590.636,
              13.64452626
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100476.68451388639,
                    2364116.91612519,
                    9.304526258935852
                  ],
                  [
                    -100476.68451388639,
                    2364590.6361251897,
                    9.304526258935852
                  ],
                  [
                    -99980.96451388639,
                    2364590.6361251897,
                    13.644526258935851
                  ],
                  [
                    -99980.96451388639,
                    2364116.91612519,
                    13.644526258935851
                  ],
                  [
                    -100476.68451388639,
                    2364116.91612519,
                    9.304526258935852
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:24:02+00:00",
            "end_time": "2018-09-08T05:35:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1978.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7704763521282,
              71.2720616089374,
              5.383321821023785
            ],
            [
              -156.7710141440135,
              71.27640938603955,
              5.383321821023785
            ],
            [
              -156.75753285751938,
              71.27659885884607,
              13.623321821023787
            ],
            [
              -156.75699767602,
              71.27225103945152,
              13.623321821023787
            ],
            [
              -156.7704763521282,
              71.2720616089374,
              5.383321821023785
            ]
          ]
        ]
      },
      "bbox": [
        -156.7710141,
        71.27206161,
        5.383321821,
        -156.7569977,
        71.27659886,
        13.62332182
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:51Z",
        "pc:count": 3003208,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101519.1746,
            "count": 3003208,
            "maximum": -101271.6287,
            "minimum": -101767.3087,
            "name": "X",
            "position": 0,
            "stddev": 135.3887674,
            "variance": 18330.11834
          },
          {
            "average": 2366221.005,
            "count": 3003208,
            "maximum": 2366457.47,
            "minimum": 2365983.75,
            "name": "Y",
            "position": 1,
            "stddev": 127.8228891,
            "variance": 16338.69099
          },
          {
            "average": 10.43295974,
            "count": 3003208,
            "maximum": 13.62332182,
            "minimum": 5.383321821,
            "name": "Z",
            "position": 2,
            "stddev": 2.031378147,
            "variance": 4.126497174
          },
          {
            "average": 45886.74096,
            "count": 3003208,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8004.592484,
            "variance": 64073500.83
          },
          {
            "average": 1,
            "count": 3003208,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3003208,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022199595,
            "count": 3003208,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499995155,
            "variance": 0.249995155
          },
          {
            "average": 0.0003935791327,
            "count": 3003208,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01983492776,
            "variance": 0.0003934243592
          },
          {
            "average": 1.320166968,
            "count": 3003208,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4672466675,
            "variance": 0.2183194483
          },
          {
            "average": 0.3883514875,
            "count": 3003208,
            "maximum": 16.46999931,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44798237,
            "variance": 109.1603357
          },
          {
            "average": 0.5089530928,
            "count": 3003208,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999199189,
            "variance": 0.2499199253
          },
          {
            "average": 410.8941975,
            "count": 3003208,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9182817811,
            "variance": 0.8432414296
          },
          {
            "average": 220417782.3,
            "count": 3003208,
            "maximum": 220419071.8,
            "minimum": 220416847.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.6404276,
            "variance": 264854.7697
          },
          {
            "average": 0.5089530928,
            "count": 3003208,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999199189,
            "variance": 0.2499199253
          },
          {
            "average": 0,
            "count": 3003208,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3003208,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3003208,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2361021947,
            "count": 3003208,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4246857761,
            "variance": 0.1803580084
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101767.3087,
          2365983.75,
          5.383321821,
          -101271.6287,
          2366457.47,
          13.62332182
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101767.30867820355,
                2365983.7503020177,
                5.383321821023785
              ],
              [
                -101767.30867820355,
                2366457.4703020174,
                5.383321821023785
              ],
              [
                -101271.62867820356,
                2366457.4703020174,
                13.623321821023787
              ],
              [
                -101271.62867820356,
                2365983.7503020177,
                13.623321821023787
              ],
              [
                -101767.30867820355,
                2365983.7503020177,
                5.383321821023785
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:51+00:00",
        "end_time": "2018-09-08T04:40:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1978.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1978.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1978.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1978.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7710141,
            71.27206161,
            5.383321821,
            -156.7569977,
            71.27659886,
            13.62332182
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7704763521282,
                  71.2720616089374,
                  5.383321821023785
                ],
                [
                  -156.7710141440135,
                  71.27640938603955,
                  5.383321821023785
                ],
                [
                  -156.75753285751938,
                  71.27659885884607,
                  13.623321821023787
                ],
                [
                  -156.75699767602,
                  71.27225103945152,
                  13.623321821023787
                ],
                [
                  -156.7704763521282,
                  71.2720616089374,
                  5.383321821023785
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1978.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1978.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:51Z",
            "pc:count": 3003208,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101519.1746,
                "count": 3003208,
                "maximum": -101271.6287,
                "minimum": -101767.3087,
                "name": "X",
                "position": 0,
                "stddev": 135.3887674,
                "variance": 18330.11834
              },
              {
                "average": 2366221.005,
                "count": 3003208,
                "maximum": 2366457.47,
                "minimum": 2365983.75,
                "name": "Y",
                "position": 1,
                "stddev": 127.8228891,
                "variance": 16338.69099
              },
              {
                "average": 10.43295974,
                "count": 3003208,
                "maximum": 13.62332182,
                "minimum": 5.383321821,
                "name": "Z",
                "position": 2,
                "stddev": 2.031378147,
                "variance": 4.126497174
              },
              {
                "average": 45886.74096,
                "count": 3003208,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8004.592484,
                "variance": 64073500.83
              },
              {
                "average": 1,
                "count": 3003208,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3003208,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022199595,
                "count": 3003208,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499995155,
                "variance": 0.249995155
              },
              {
                "average": 0.0003935791327,
                "count": 3003208,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01983492776,
                "variance": 0.0003934243592
              },
              {
                "average": 1.320166968,
                "count": 3003208,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4672466675,
                "variance": 0.2183194483
              },
              {
                "average": 0.3883514875,
                "count": 3003208,
                "maximum": 16.46999931,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44798237,
                "variance": 109.1603357
              },
              {
                "average": 0.5089530928,
                "count": 3003208,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999199189,
                "variance": 0.2499199253
              },
              {
                "average": 410.8941975,
                "count": 3003208,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9182817811,
                "variance": 0.8432414296
              },
              {
                "average": 220417782.3,
                "count": 3003208,
                "maximum": 220419071.8,
                "minimum": 220416847.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.6404276,
                "variance": 264854.7697
              },
              {
                "average": 0.5089530928,
                "count": 3003208,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999199189,
                "variance": 0.2499199253
              },
              {
                "average": 0,
                "count": 3003208,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3003208,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3003208,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2361021947,
                "count": 3003208,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4246857761,
                "variance": 0.1803580084
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101767.3087,
              2365983.75,
              5.383321821,
              -101271.6287,
              2366457.47,
              13.62332182
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101767.30867820355,
                    2365983.7503020177,
                    5.383321821023785
                  ],
                  [
                    -101767.30867820355,
                    2366457.4703020174,
                    5.383321821023785
                  ],
                  [
                    -101271.62867820356,
                    2366457.4703020174,
                    13.623321821023787
                  ],
                  [
                    -101271.62867820356,
                    2365983.7503020177,
                    13.623321821023787
                  ],
                  [
                    -101767.30867820355,
                    2365983.7503020177,
                    5.383321821023785
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:51+00:00",
            "end_time": "2018-09-08T04:40:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1772.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8862770911122,
              71.25664914501613,
              1.046476211636519
            ],
            [
              -156.88628169948777,
              71.25668493213314,
              1.046476211636519
            ],
            [
              -156.88622083554378,
              71.25668582600962,
              1.26647621163652
            ],
            [
              -156.8862162272651,
              71.25665003889095,
              1.26647621163652
            ],
            [
              -156.8862770911122,
              71.25664914501613,
              1.046476211636519
            ]
          ]
        ]
      },
      "bbox": [
        -156.8862817,
        71.25664915,
        1.046476212,
        -156.8862162,
        71.25668583,
        1.266476212
      ],
      "properties": {
        "datetime": "2018-09-08T04:26:35Z",
        "pc:count": 45,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -106090.185,
            "count": 45,
            "maximum": -106089.0292,
            "minimum": -106091.2692,
            "name": "X",
            "position": 0,
            "stddev": 0.6332688962,
            "variance": 0.401029495
          },
          {
            "average": 2364489.642,
            "count": 45,
            "maximum": 2364492.449,
            "minimum": 2364488.549,
            "name": "Y",
            "position": 1,
            "stddev": 0.8286489552,
            "variance": 0.6866590909
          },
          {
            "average": 1.155809545,
            "count": 45,
            "maximum": 1.266476212,
            "minimum": 1.046476212,
            "name": "Z",
            "position": 2,
            "stddev": 0.04624047814,
            "variance": 0.002138181818
          },
          {
            "average": 14357.88889,
            "count": 45,
            "maximum": 51482,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 11978.92287,
            "variance": 143494593.2
          },
          {
            "average": 1,
            "count": 45,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 45,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4666666667,
            "count": 45,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5045249791,
            "variance": 0.2545454545
          },
          {
            "average": 0,
            "count": 45,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 7.133333333,
            "count": 45,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.17375602,
            "variance": 10.07272727
          },
          {
            "average": -0.9959999455,
            "count": 45,
            "maximum": 15.96000004,
            "minimum": -10.68599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.893350087,
            "variance": 79.09167577
          },
          {
            "average": 0.4222222222,
            "count": 45,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994946942,
            "variance": 0.2494949495
          },
          {
            "average": 406.9111111,
            "count": 45,
            "maximum": 408,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7013695117,
            "variance": 0.4919191919
          },
          {
            "average": 220415560.2,
            "count": 45,
            "maximum": 220415995.2,
            "minimum": 220414867.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 453.7838797,
            "variance": 205919.8095
          },
          {
            "average": 0.4222222222,
            "count": 45,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994946942,
            "variance": 0.2494949495
          },
          {
            "average": 0,
            "count": 45,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 45,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 45,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2,
            "count": 45,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4045199175,
            "variance": 0.1636363636
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106091.2692,
          2364488.549,
          1.046476212,
          -106089.0292,
          2364492.449,
          1.266476212
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106091.26923288958,
                2364488.5491285073,
                1.046476211636519
              ],
              [
                -106091.26923288958,
                2364492.4491285076,
                1.046476211636519
              ],
              [
                -106089.02923288959,
                2364492.4491285076,
                1.26647621163652
              ],
              [
                -106089.02923288959,
                2364488.5491285073,
                1.26647621163652
              ],
              [
                -106091.26923288958,
                2364488.5491285073,
                1.046476211636519
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:26:35+00:00",
        "end_time": "2018-09-08T04:07:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1772.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1772.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1772.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1772.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8862817,
            71.25664915,
            1.046476212,
            -156.8862162,
            71.25668583,
            1.266476212
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8862770911122,
                  71.25664914501613,
                  1.046476211636519
                ],
                [
                  -156.88628169948777,
                  71.25668493213314,
                  1.046476211636519
                ],
                [
                  -156.88622083554378,
                  71.25668582600962,
                  1.26647621163652
                ],
                [
                  -156.8862162272651,
                  71.25665003889095,
                  1.26647621163652
                ],
                [
                  -156.8862770911122,
                  71.25664914501613,
                  1.046476211636519
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1772.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1772.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:26:35Z",
            "pc:count": 45,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -106090.185,
                "count": 45,
                "maximum": -106089.0292,
                "minimum": -106091.2692,
                "name": "X",
                "position": 0,
                "stddev": 0.6332688962,
                "variance": 0.401029495
              },
              {
                "average": 2364489.642,
                "count": 45,
                "maximum": 2364492.449,
                "minimum": 2364488.549,
                "name": "Y",
                "position": 1,
                "stddev": 0.8286489552,
                "variance": 0.6866590909
              },
              {
                "average": 1.155809545,
                "count": 45,
                "maximum": 1.266476212,
                "minimum": 1.046476212,
                "name": "Z",
                "position": 2,
                "stddev": 0.04624047814,
                "variance": 0.002138181818
              },
              {
                "average": 14357.88889,
                "count": 45,
                "maximum": 51482,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 11978.92287,
                "variance": 143494593.2
              },
              {
                "average": 1,
                "count": 45,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 45,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4666666667,
                "count": 45,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5045249791,
                "variance": 0.2545454545
              },
              {
                "average": 0,
                "count": 45,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 7.133333333,
                "count": 45,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.17375602,
                "variance": 10.07272727
              },
              {
                "average": -0.9959999455,
                "count": 45,
                "maximum": 15.96000004,
                "minimum": -10.68599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.893350087,
                "variance": 79.09167577
              },
              {
                "average": 0.4222222222,
                "count": 45,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994946942,
                "variance": 0.2494949495
              },
              {
                "average": 406.9111111,
                "count": 45,
                "maximum": 408,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7013695117,
                "variance": 0.4919191919
              },
              {
                "average": 220415560.2,
                "count": 45,
                "maximum": 220415995.2,
                "minimum": 220414867.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 453.7838797,
                "variance": 205919.8095
              },
              {
                "average": 0.4222222222,
                "count": 45,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994946942,
                "variance": 0.2494949495
              },
              {
                "average": 0,
                "count": 45,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 45,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 45,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2,
                "count": 45,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4045199175,
                "variance": 0.1636363636
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106091.2692,
              2364488.549,
              1.046476212,
              -106089.0292,
              2364492.449,
              1.266476212
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106091.26923288958,
                    2364488.5491285073,
                    1.046476211636519
                  ],
                  [
                    -106091.26923288958,
                    2364492.4491285076,
                    1.046476211636519
                  ],
                  [
                    -106089.02923288959,
                    2364492.4491285076,
                    1.26647621163652
                  ],
                  [
                    -106089.02923288959,
                    2364488.5491285073,
                    1.26647621163652
                  ],
                  [
                    -106091.26923288958,
                    2364488.5491285073,
                    1.046476211636519
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:26:35+00:00",
            "end_time": "2018-09-08T04:07:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2019.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.693692818832,
              71.27564286844142,
              5.876574774045139
            ],
            [
              -156.69421573147403,
              71.27999040657775,
              5.876574774045139
            ],
            [
              -156.6807289313786,
              71.28017465968551,
              10.51657477404514
            ],
            [
              -156.6802086306491,
              71.27582708041568,
              10.51657477404514
            ],
            [
              -156.693692818832,
              71.27564286844142,
              5.876574774045139
            ]
          ]
        ]
      },
      "bbox": [
        -156.6942157,
        71.27564287,
        5.876574774,
        -156.6802086,
        71.28017466,
        10.51657477
      ],
      "properties": {
        "datetime": "2018-09-11T18:00:52Z",
        "pc:count": 3350233,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98680.12597,
            "count": 3350233,
            "maximum": -98436.81582,
            "minimum": -98932.59582,
            "name": "X",
            "position": 0,
            "stddev": 138.3553912,
            "variance": 19142.21428
          },
          {
            "average": 2366485.699,
            "count": 3350233,
            "maximum": 2366730.921,
            "minimum": 2366257.261,
            "name": "Y",
            "position": 1,
            "stddev": 128.9101196,
            "variance": 16617.81894
          },
          {
            "average": 6.703981722,
            "count": 3350233,
            "maximum": 10.51657477,
            "minimum": 5.876574774,
            "name": "Z",
            "position": 2,
            "stddev": 1.006584585,
            "variance": 1.013212527
          },
          {
            "average": 34620.98298,
            "count": 3350233,
            "maximum": 65535,
            "minimum": 1659,
            "name": "Intensity",
            "position": 3,
            "stddev": 11502.76463,
            "variance": 132313594.2
          },
          {
            "average": 1,
            "count": 3350233,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3350233,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4962463805,
            "count": 3350233,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999859848,
            "variance": 0.249985985
          },
          {
            "average": 0.0004880257582,
            "count": 3350233,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02208591711,
            "variance": 0.0004877877347
          },
          {
            "average": 1.257518208,
            "count": 3350233,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4376888935,
            "variance": 0.1915715675
          },
          {
            "average": 2.005997249,
            "count": 3350233,
            "maximum": 20.76600075,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97320316,
            "variance": 120.4111875
          },
          {
            "average": 0.4840382744,
            "count": 3350233,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499745233,
            "variance": 0.2497452979
          },
          {
            "average": 419.6940926,
            "count": 3350233,
            "maximum": 460,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.50893138,
            "variance": 182.491227
          },
          {
            "average": 220450709.5,
            "count": 3350233,
            "maximum": 220724052.3,
            "minimum": 220419027.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 91421.44325,
            "variance": 8357880285
          },
          {
            "average": 0.4840382744,
            "count": 3350233,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499745233,
            "variance": 0.2497452979
          },
          {
            "average": 0,
            "count": 3350233,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3350233,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3350233,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2323342884,
            "count": 3350233,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4223211101,
            "variance": 0.1783551201
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98932.59582,
          2366257.261,
          5.876574774,
          -98436.81582,
          2366730.921,
          10.51657477
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98932.59581711258,
                2366257.2614065106,
                5.876574774045139
              ],
              [
                -98932.59581711258,
                2366730.9214065108,
                5.876574774045139
              ],
              [
                -98436.81581711258,
                2366730.9214065108,
                10.51657477404514
              ],
              [
                -98436.81581711258,
                2366257.2614065106,
                10.51657477404514
              ],
              [
                -98932.59581711258,
                2366257.2614065106,
                5.876574774045139
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:00:52+00:00",
        "end_time": "2018-09-08T05:17:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2019.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2019.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2019.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2019.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6942157,
            71.27564287,
            5.876574774,
            -156.6802086,
            71.28017466,
            10.51657477
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.693692818832,
                  71.27564286844142,
                  5.876574774045139
                ],
                [
                  -156.69421573147403,
                  71.27999040657775,
                  5.876574774045139
                ],
                [
                  -156.6807289313786,
                  71.28017465968551,
                  10.51657477404514
                ],
                [
                  -156.6802086306491,
                  71.27582708041568,
                  10.51657477404514
                ],
                [
                  -156.693692818832,
                  71.27564286844142,
                  5.876574774045139
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2019.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2019.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:00:52Z",
            "pc:count": 3350233,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98680.12597,
                "count": 3350233,
                "maximum": -98436.81582,
                "minimum": -98932.59582,
                "name": "X",
                "position": 0,
                "stddev": 138.3553912,
                "variance": 19142.21428
              },
              {
                "average": 2366485.699,
                "count": 3350233,
                "maximum": 2366730.921,
                "minimum": 2366257.261,
                "name": "Y",
                "position": 1,
                "stddev": 128.9101196,
                "variance": 16617.81894
              },
              {
                "average": 6.703981722,
                "count": 3350233,
                "maximum": 10.51657477,
                "minimum": 5.876574774,
                "name": "Z",
                "position": 2,
                "stddev": 1.006584585,
                "variance": 1.013212527
              },
              {
                "average": 34620.98298,
                "count": 3350233,
                "maximum": 65535,
                "minimum": 1659,
                "name": "Intensity",
                "position": 3,
                "stddev": 11502.76463,
                "variance": 132313594.2
              },
              {
                "average": 1,
                "count": 3350233,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3350233,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4962463805,
                "count": 3350233,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999859848,
                "variance": 0.249985985
              },
              {
                "average": 0.0004880257582,
                "count": 3350233,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02208591711,
                "variance": 0.0004877877347
              },
              {
                "average": 1.257518208,
                "count": 3350233,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4376888935,
                "variance": 0.1915715675
              },
              {
                "average": 2.005997249,
                "count": 3350233,
                "maximum": 20.76600075,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97320316,
                "variance": 120.4111875
              },
              {
                "average": 0.4840382744,
                "count": 3350233,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499745233,
                "variance": 0.2497452979
              },
              {
                "average": 419.6940926,
                "count": 3350233,
                "maximum": 460,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.50893138,
                "variance": 182.491227
              },
              {
                "average": 220450709.5,
                "count": 3350233,
                "maximum": 220724052.3,
                "minimum": 220419027.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 91421.44325,
                "variance": 8357880285
              },
              {
                "average": 0.4840382744,
                "count": 3350233,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499745233,
                "variance": 0.2497452979
              },
              {
                "average": 0,
                "count": 3350233,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3350233,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3350233,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2323342884,
                "count": 3350233,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4223211101,
                "variance": 0.1783551201
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98932.59582,
              2366257.261,
              5.876574774,
              -98436.81582,
              2366730.921,
              10.51657477
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98932.59581711258,
                    2366257.2614065106,
                    5.876574774045139
                  ],
                  [
                    -98932.59581711258,
                    2366730.9214065108,
                    5.876574774045139
                  ],
                  [
                    -98436.81581711258,
                    2366730.9214065108,
                    10.51657477404514
                  ],
                  [
                    -98436.81581711258,
                    2366257.2614065106,
                    10.51657477404514
                  ],
                  [
                    -98932.59581711258,
                    2366257.2614065106,
                    5.876574774045139
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:00:52+00:00",
            "end_time": "2018-09-08T05:17:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1773.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8861797588162,
              71.25638818514983,
              0.833652701262979
            ],
            [
              -156.8867182103552,
              71.26056908836938,
              0.833652701262979
            ],
            [
              -156.87325505134072,
              71.26076635517636,
              1.593652701262979
            ],
            [
              -156.8727191047638,
              71.25658540965297,
              1.593652701262979
            ],
            [
              -156.8861797588162,
              71.25638818514983,
              0.833652701262979
            ]
          ]
        ]
      },
      "bbox": [
        -156.8867182,
        71.25638819,
        0.8336527013,
        -156.8727191,
        71.26076636,
        1.593652701
      ],
      "properties": {
        "datetime": "2018-09-08T04:42:05Z",
        "pc:count": 1243474,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105776.9502,
            "count": 1243474,
            "maximum": -105593.5282,
            "minimum": -106088.9282,
            "name": "X",
            "position": 0,
            "stddev": 111.718529,
            "variance": 12481.02972
          },
          {
            "average": 2364663.67,
            "count": 1243474,
            "maximum": 2364915.628,
            "minimum": 2364460.008,
            "name": "Y",
            "position": 1,
            "stddev": 122.9485128,
            "variance": 15116.33679
          },
          {
            "average": 1.175993136,
            "count": 1243474,
            "maximum": 1.593652701,
            "minimum": 0.8336527013,
            "name": "Z",
            "position": 2,
            "stddev": 0.06889376771,
            "variance": 0.004746351229
          },
          {
            "average": 15783.51956,
            "count": 1243474,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12249.95124,
            "variance": 150061305.3
          },
          {
            "average": 1.000000804,
            "count": 1243474,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008967711859,
            "variance": 8.041985598e-07
          },
          {
            "average": 1.000000804,
            "count": 1243474,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008967711859,
            "variance": 8.041985598e-07
          },
          {
            "average": 0.5027817228,
            "count": 1243474,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499992463,
            "variance": 0.2499924631
          },
          {
            "average": 0.000652205032,
            "count": 1243474,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02552998599,
            "variance": 0.0006517801848
          },
          {
            "average": 7.611613914,
            "count": 1243474,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.522774998,
            "variance": 6.364393691
          },
          {
            "average": -0.6436186828,
            "count": 1243474,
            "maximum": 16.40999985,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.463241167,
            "variance": 55.69996872
          },
          {
            "average": 0.4857142168,
            "count": 1243474,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997960757,
            "variance": 0.2497961173
          },
          {
            "average": 406.9395798,
            "count": 1243474,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6574819081,
            "variance": 0.4322824595
          },
          {
            "average": 220415594.1,
            "count": 1243474,
            "maximum": 220416925.9,
            "minimum": 220414867.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 422.093056,
            "variance": 178162.5479
          },
          {
            "average": 0.4857142168,
            "count": 1243474,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997960757,
            "variance": 0.2497961173
          },
          {
            "average": 0,
            "count": 1243474,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1243474,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1243474,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05001712943,
            "count": 1243474,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2179803991,
            "variance": 0.0475154544
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -106088.9282,
          2364460.008,
          0.8336527013,
          -105593.5282,
          2364915.628,
          1.593652701
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -106088.9282071397,
                2364460.0084731574,
                0.833652701262979
              ],
              [
                -106088.9282071397,
                2364915.6284731575,
                0.833652701262979
              ],
              [
                -105593.52820713971,
                2364915.6284731575,
                1.593652701262979
              ],
              [
                -105593.52820713971,
                2364460.0084731574,
                1.593652701262979
              ],
              [
                -106088.9282071397,
                2364460.0084731574,
                0.833652701262979
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:42:05+00:00",
        "end_time": "2018-09-08T04:07:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1773.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1773.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1773.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1773.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8867182,
            71.25638819,
            0.8336527013,
            -156.8727191,
            71.26076636,
            1.593652701
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8861797588162,
                  71.25638818514983,
                  0.833652701262979
                ],
                [
                  -156.8867182103552,
                  71.26056908836938,
                  0.833652701262979
                ],
                [
                  -156.87325505134072,
                  71.26076635517636,
                  1.593652701262979
                ],
                [
                  -156.8727191047638,
                  71.25658540965297,
                  1.593652701262979
                ],
                [
                  -156.8861797588162,
                  71.25638818514983,
                  0.833652701262979
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1773.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1773.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:42:05Z",
            "pc:count": 1243474,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105776.9502,
                "count": 1243474,
                "maximum": -105593.5282,
                "minimum": -106088.9282,
                "name": "X",
                "position": 0,
                "stddev": 111.718529,
                "variance": 12481.02972
              },
              {
                "average": 2364663.67,
                "count": 1243474,
                "maximum": 2364915.628,
                "minimum": 2364460.008,
                "name": "Y",
                "position": 1,
                "stddev": 122.9485128,
                "variance": 15116.33679
              },
              {
                "average": 1.175993136,
                "count": 1243474,
                "maximum": 1.593652701,
                "minimum": 0.8336527013,
                "name": "Z",
                "position": 2,
                "stddev": 0.06889376771,
                "variance": 0.004746351229
              },
              {
                "average": 15783.51956,
                "count": 1243474,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12249.95124,
                "variance": 150061305.3
              },
              {
                "average": 1.000000804,
                "count": 1243474,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008967711859,
                "variance": 8.041985598e-07
              },
              {
                "average": 1.000000804,
                "count": 1243474,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008967711859,
                "variance": 8.041985598e-07
              },
              {
                "average": 0.5027817228,
                "count": 1243474,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499992463,
                "variance": 0.2499924631
              },
              {
                "average": 0.000652205032,
                "count": 1243474,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02552998599,
                "variance": 0.0006517801848
              },
              {
                "average": 7.611613914,
                "count": 1243474,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.522774998,
                "variance": 6.364393691
              },
              {
                "average": -0.6436186828,
                "count": 1243474,
                "maximum": 16.40999985,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.463241167,
                "variance": 55.69996872
              },
              {
                "average": 0.4857142168,
                "count": 1243474,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997960757,
                "variance": 0.2497961173
              },
              {
                "average": 406.9395798,
                "count": 1243474,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6574819081,
                "variance": 0.4322824595
              },
              {
                "average": 220415594.1,
                "count": 1243474,
                "maximum": 220416925.9,
                "minimum": 220414867.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 422.093056,
                "variance": 178162.5479
              },
              {
                "average": 0.4857142168,
                "count": 1243474,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997960757,
                "variance": 0.2497961173
              },
              {
                "average": 0,
                "count": 1243474,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1243474,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1243474,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05001712943,
                "count": 1243474,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2179803991,
                "variance": 0.0475154544
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -106088.9282,
              2364460.008,
              0.8336527013,
              -105593.5282,
              2364915.628,
              1.593652701
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -106088.9282071397,
                    2364460.0084731574,
                    0.833652701262979
                  ],
                  [
                    -106088.9282071397,
                    2364915.6284731575,
                    0.833652701262979
                  ],
                  [
                    -105593.52820713971,
                    2364915.6284731575,
                    1.593652701262979
                  ],
                  [
                    -105593.52820713971,
                    2364460.0084731574,
                    1.593652701262979
                  ],
                  [
                    -106088.9282071397,
                    2364460.0084731574,
                    0.833652701262979
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:42:05+00:00",
            "end_time": "2018-09-08T04:07:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1883.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7964882808314,
              71.26403265924804,
              5.031289255711661
            ],
            [
              -156.79703090172742,
              71.26837994670973,
              5.031289255711661
            ],
            [
              -156.78355303283377,
              71.26857121468969,
              14.53128925571166
            ],
            [
              -156.78301302048882,
              71.26422388455937,
              14.53128925571166
            ],
            [
              -156.7964882808314,
              71.26403265924804,
              5.031289255711661
            ]
          ]
        ]
      },
      "bbox": [
        -156.7970309,
        71.26403266,
        5.031289256,
        -156.783013,
        71.26857121,
        14.53128926
      ],
      "properties": {
        "datetime": "2018-09-08T05:18:15Z",
        "pc:count": 3075155,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102509.8805,
            "count": 3075155,
            "maximum": -102263.2928,
            "minimum": -102759.0328,
            "name": "X",
            "position": 0,
            "stddev": 135.3020618,
            "variance": 18306.64794
          },
          {
            "average": 2365393.316,
            "count": 3075155,
            "maximum": 2365624.188,
            "minimum": 2365150.488,
            "name": "Y",
            "position": 1,
            "stddev": 128.3587368,
            "variance": 16475.96531
          },
          {
            "average": 10.02682259,
            "count": 3075155,
            "maximum": 14.53128926,
            "minimum": 5.031289256,
            "name": "Z",
            "position": 2,
            "stddev": 2.005013355,
            "variance": 4.020078555
          },
          {
            "average": 45529.39427,
            "count": 3075155,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7616.421099,
            "variance": 58009870.36
          },
          {
            "average": 1,
            "count": 3075155,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3075155,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5008076016,
            "count": 3075155,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999994291,
            "variance": 0.2499994291
          },
          {
            "average": 0.0004168895552,
            "count": 3075155,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0204136203,
            "variance": 0.0004167158938
          },
          {
            "average": 1.303580795,
            "count": 3075155,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4621852736,
            "variance": 0.2136152271
          },
          {
            "average": 0.7113850575,
            "count": 3075155,
            "maximum": 16.38599968,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44610403,
            "variance": 109.1210894
          },
          {
            "average": 0.5035775432,
            "count": 3075155,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999872823,
            "variance": 0.2499872825
          },
          {
            "average": 410.9720095,
            "count": 3075155,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9330327605,
            "variance": 0.8705501322
          },
          {
            "average": 220417824.8,
            "count": 3075155,
            "maximum": 220419095,
            "minimum": 220416869.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.5836942,
            "variance": 276238.2196
          },
          {
            "average": 0.5035775432,
            "count": 3075155,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999872823,
            "variance": 0.2499872825
          },
          {
            "average": 0,
            "count": 3075155,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3075155,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3075155,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2421656795,
            "count": 3075155,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4283941209,
            "variance": 0.1835215228
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102759.0328,
          2365150.488,
          5.031289256,
          -102263.2928,
          2365624.188,
          14.53128926
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102759.03278113823,
                2365150.488439754,
                5.031289255711661
              ],
              [
                -102759.03278113823,
                2365624.1884397543,
                5.031289255711661
              ],
              [
                -102263.29278113824,
                2365624.1884397543,
                14.53128925571166
              ],
              [
                -102263.29278113824,
                2365150.488439754,
                14.53128925571166
              ],
              [
                -102759.03278113823,
                2365150.488439754,
                5.031289255711661
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:18:15+00:00",
        "end_time": "2018-09-08T04:41:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1883.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1883.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1883.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1883.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7970309,
            71.26403266,
            5.031289256,
            -156.783013,
            71.26857121,
            14.53128926
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7964882808314,
                  71.26403265924804,
                  5.031289255711661
                ],
                [
                  -156.79703090172742,
                  71.26837994670973,
                  5.031289255711661
                ],
                [
                  -156.78355303283377,
                  71.26857121468969,
                  14.53128925571166
                ],
                [
                  -156.78301302048882,
                  71.26422388455937,
                  14.53128925571166
                ],
                [
                  -156.7964882808314,
                  71.26403265924804,
                  5.031289255711661
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1883.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1883.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:18:15Z",
            "pc:count": 3075155,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102509.8805,
                "count": 3075155,
                "maximum": -102263.2928,
                "minimum": -102759.0328,
                "name": "X",
                "position": 0,
                "stddev": 135.3020618,
                "variance": 18306.64794
              },
              {
                "average": 2365393.316,
                "count": 3075155,
                "maximum": 2365624.188,
                "minimum": 2365150.488,
                "name": "Y",
                "position": 1,
                "stddev": 128.3587368,
                "variance": 16475.96531
              },
              {
                "average": 10.02682259,
                "count": 3075155,
                "maximum": 14.53128926,
                "minimum": 5.031289256,
                "name": "Z",
                "position": 2,
                "stddev": 2.005013355,
                "variance": 4.020078555
              },
              {
                "average": 45529.39427,
                "count": 3075155,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7616.421099,
                "variance": 58009870.36
              },
              {
                "average": 1,
                "count": 3075155,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3075155,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5008076016,
                "count": 3075155,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999994291,
                "variance": 0.2499994291
              },
              {
                "average": 0.0004168895552,
                "count": 3075155,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0204136203,
                "variance": 0.0004167158938
              },
              {
                "average": 1.303580795,
                "count": 3075155,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4621852736,
                "variance": 0.2136152271
              },
              {
                "average": 0.7113850575,
                "count": 3075155,
                "maximum": 16.38599968,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44610403,
                "variance": 109.1210894
              },
              {
                "average": 0.5035775432,
                "count": 3075155,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999872823,
                "variance": 0.2499872825
              },
              {
                "average": 410.9720095,
                "count": 3075155,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9330327605,
                "variance": 0.8705501322
              },
              {
                "average": 220417824.8,
                "count": 3075155,
                "maximum": 220419095,
                "minimum": 220416869.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.5836942,
                "variance": 276238.2196
              },
              {
                "average": 0.5035775432,
                "count": 3075155,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999872823,
                "variance": 0.2499872825
              },
              {
                "average": 0,
                "count": 3075155,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3075155,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3075155,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2421656795,
                "count": 3075155,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4283941209,
                "variance": 0.1835215228
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102759.0328,
              2365150.488,
              5.031289256,
              -102263.2928,
              2365624.188,
              14.53128926
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102759.03278113823,
                    2365150.488439754,
                    5.031289255711661
                  ],
                  [
                    -102759.03278113823,
                    2365624.1884397543,
                    5.031289255711661
                  ],
                  [
                    -102263.29278113824,
                    2365624.1884397543,
                    14.53128925571166
                  ],
                  [
                    -102263.29278113824,
                    2365150.488439754,
                    14.53128925571166
                  ],
                  [
                    -102759.03278113823,
                    2365150.488439754,
                    5.031289255711661
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:18:15+00:00",
            "end_time": "2018-09-08T04:41:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2112.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78220308501034,
              71.28853289244562,
              -7.630334877172182
            ],
            [
              -156.7827434578221,
              71.29288038566794,
              -7.630334877172182
            ],
            [
              -156.76924691220933,
              71.2930707593621,
              23.82966512282782
            ],
            [
              -156.76870915416026,
              71.28872322360864,
              23.82966512282782
            ],
            [
              -156.78220308501034,
              71.28853289244562,
              -7.630334877172182
            ]
          ]
        ]
      },
      "bbox": [
        -156.7827435,
        71.28853289,
        -7.630334877,
        -156.7687092,
        71.29307076,
        23.82966512
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:12Z",
        "pc:count": 2874849,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101894.5621,
            "count": 2874849,
            "maximum": -101626.8383,
            "minimum": -102122.7183,
            "name": "X",
            "position": 0,
            "stddev": 132.8253441,
            "variance": 17642.57204
          },
          {
            "average": 2368016.06,
            "count": 2874849,
            "maximum": 2368266.849,
            "minimum": 2367793.209,
            "name": "Y",
            "position": 1,
            "stddev": 128.3458865,
            "variance": 16472.66658
          },
          {
            "average": 7.895183065,
            "count": 2874849,
            "maximum": 23.82966512,
            "minimum": -7.630334877,
            "name": "Z",
            "position": 2,
            "stddev": 3.428712553,
            "variance": 11.75606977
          },
          {
            "average": 32752.34568,
            "count": 2874849,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15026.76535,
            "variance": 225803676.9
          },
          {
            "average": 1.027224386,
            "count": 2874849,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1668089098,
            "variance": 0.02782521238
          },
          {
            "average": 1.054323897,
            "count": 2874849,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2353546768,
            "variance": 0.05539182388
          },
          {
            "average": 0.5035147933,
            "count": 2874849,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499987733,
            "variance": 0.2499877332
          },
          {
            "average": 0.0004504584415,
            "count": 2874849,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02121922914,
            "variance": 0.0004502556853
          },
          {
            "average": 2.516178763,
            "count": 2874849,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.440263342,
            "variance": 5.954885181
          },
          {
            "average": 0.3137473827,
            "count": 2874849,
            "maximum": 16.31999969,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.2839928,
            "variance": 105.7605078
          },
          {
            "average": 0.5299996626,
            "count": 2874849,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990992956,
            "variance": 0.2491001069
          },
          {
            "average": 406.4229172,
            "count": 2874849,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9422754212,
            "variance": 0.8878829695
          },
          {
            "average": 220415281.6,
            "count": 2874849,
            "maximum": 220416092.5,
            "minimum": 220414551.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 524.8191123,
            "variance": 275435.1006
          },
          {
            "average": 0.5299996626,
            "count": 2874849,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990992956,
            "variance": 0.2491001069
          },
          {
            "average": 0,
            "count": 2874849,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2874849,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2874849,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2235331317,
            "count": 2874849,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4166126871,
            "variance": 0.1735661311
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102122.7183,
          2367793.209,
          -7.630334877,
          -101626.8383,
          2368266.849,
          23.82966512
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102122.7183312333,
                2367793.208857509,
                -7.630334877172182
              ],
              [
                -102122.7183312333,
                2368266.8488575085,
                -7.630334877172182
              ],
              [
                -101626.8383312333,
                2368266.8488575085,
                23.82966512282782
              ],
              [
                -101626.8383312333,
                2367793.208857509,
                23.82966512282782
              ],
              [
                -102122.7183312333,
                2367793.208857509,
                -7.630334877172182
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:12+00:00",
        "end_time": "2018-09-08T04:02:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2112.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2112.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2112.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2112.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7827435,
            71.28853289,
            -7.630334877,
            -156.7687092,
            71.29307076,
            23.82966512
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78220308501034,
                  71.28853289244562,
                  -7.630334877172182
                ],
                [
                  -156.7827434578221,
                  71.29288038566794,
                  -7.630334877172182
                ],
                [
                  -156.76924691220933,
                  71.2930707593621,
                  23.82966512282782
                ],
                [
                  -156.76870915416026,
                  71.28872322360864,
                  23.82966512282782
                ],
                [
                  -156.78220308501034,
                  71.28853289244562,
                  -7.630334877172182
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2112.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2112.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:12Z",
            "pc:count": 2874849,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101894.5621,
                "count": 2874849,
                "maximum": -101626.8383,
                "minimum": -102122.7183,
                "name": "X",
                "position": 0,
                "stddev": 132.8253441,
                "variance": 17642.57204
              },
              {
                "average": 2368016.06,
                "count": 2874849,
                "maximum": 2368266.849,
                "minimum": 2367793.209,
                "name": "Y",
                "position": 1,
                "stddev": 128.3458865,
                "variance": 16472.66658
              },
              {
                "average": 7.895183065,
                "count": 2874849,
                "maximum": 23.82966512,
                "minimum": -7.630334877,
                "name": "Z",
                "position": 2,
                "stddev": 3.428712553,
                "variance": 11.75606977
              },
              {
                "average": 32752.34568,
                "count": 2874849,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15026.76535,
                "variance": 225803676.9
              },
              {
                "average": 1.027224386,
                "count": 2874849,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1668089098,
                "variance": 0.02782521238
              },
              {
                "average": 1.054323897,
                "count": 2874849,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2353546768,
                "variance": 0.05539182388
              },
              {
                "average": 0.5035147933,
                "count": 2874849,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499987733,
                "variance": 0.2499877332
              },
              {
                "average": 0.0004504584415,
                "count": 2874849,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02121922914,
                "variance": 0.0004502556853
              },
              {
                "average": 2.516178763,
                "count": 2874849,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.440263342,
                "variance": 5.954885181
              },
              {
                "average": 0.3137473827,
                "count": 2874849,
                "maximum": 16.31999969,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.2839928,
                "variance": 105.7605078
              },
              {
                "average": 0.5299996626,
                "count": 2874849,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990992956,
                "variance": 0.2491001069
              },
              {
                "average": 406.4229172,
                "count": 2874849,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9422754212,
                "variance": 0.8878829695
              },
              {
                "average": 220415281.6,
                "count": 2874849,
                "maximum": 220416092.5,
                "minimum": 220414551.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 524.8191123,
                "variance": 275435.1006
              },
              {
                "average": 0.5299996626,
                "count": 2874849,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990992956,
                "variance": 0.2491001069
              },
              {
                "average": 0,
                "count": 2874849,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2874849,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2874849,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2235331317,
                "count": 2874849,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4166126871,
                "variance": 0.1735661311
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102122.7183,
              2367793.209,
              -7.630334877,
              -101626.8383,
              2368266.849,
              23.82966512
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102122.7183312333,
                    2367793.208857509,
                    -7.630334877172182
                  ],
                  [
                    -102122.7183312333,
                    2368266.8488575085,
                    -7.630334877172182
                  ],
                  [
                    -101626.8383312333,
                    2368266.8488575085,
                    23.82966512282782
                  ],
                  [
                    -101626.8383312333,
                    2367793.208857509,
                    23.82966512282782
                  ],
                  [
                    -102122.7183312333,
                    2367793.208857509,
                    -7.630334877172182
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:12+00:00",
            "end_time": "2018-09-08T04:02:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2173.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74338437066652,
              71.29647532819398,
              -8.295581906202875
            ],
            [
              -156.74391732972794,
              71.3008226096477,
              -8.295581906202875
            ],
            [
              -156.73041621406784,
              71.30101032456493,
              30.024418093797124
            ],
            [
              -156.72988587144158,
              71.29666300115683,
              30.024418093797124
            ],
            [
              -156.74338437066652,
              71.29647532819398,
              -8.295581906202875
            ]
          ]
        ]
      },
      "bbox": [
        -156.7439173,
        71.29647533,
        -8.295581906,
        -156.7298859,
        71.30101032,
        30.02441809
      ],
      "properties": {
        "datetime": "2018-09-08T04:40:10Z",
        "pc:count": 3036312,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100417.7572,
            "count": 3036312,
            "maximum": -100167.1039,
            "minimum": -100662.9639,
            "name": "X",
            "position": 0,
            "stddev": 135.3590852,
            "variance": 18322.08194
          },
          {
            "average": 2368842.685,
            "count": 3036312,
            "maximum": 2369071.298,
            "minimum": 2368597.718,
            "name": "Y",
            "position": 1,
            "stddev": 127.2585211,
            "variance": 16194.7312
          },
          {
            "average": 7.738888784,
            "count": 3036312,
            "maximum": 30.02441809,
            "minimum": -8.295581906,
            "name": "Z",
            "position": 2,
            "stddev": 2.378261349,
            "variance": 5.656127043
          },
          {
            "average": 34852.46765,
            "count": 3036312,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12335.01103,
            "variance": 152152497.2
          },
          {
            "average": 1.015805029,
            "count": 3036312,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1280226574,
            "variance": 0.0163898008
          },
          {
            "average": 1.031635089,
            "count": 3036312,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1820421204,
            "variance": 0.03313933361
          },
          {
            "average": 0.4998850579,
            "count": 3036312,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000691,
            "variance": 0.2500000691
          },
          {
            "average": 0.0004353966259,
            "count": 3036312,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02086162024,
            "variance": 0.000435207199
          },
          {
            "average": 1.883697723,
            "count": 3036312,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.780095138,
            "variance": 3.168738702
          },
          {
            "average": -0.2198794111,
            "count": 3036312,
            "maximum": 16.34399986,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43890857,
            "variance": 108.970812
          },
          {
            "average": 0.4776333921,
            "count": 3036312,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994995666,
            "variance": 0.249499817
          },
          {
            "average": 407.2047626,
            "count": 3036312,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9321421887,
            "variance": 0.86888906
          },
          {
            "average": 220415709.7,
            "count": 3036312,
            "maximum": 220416810.4,
            "minimum": 220414527.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.0600392,
            "variance": 287360.3657
          },
          {
            "average": 0.4776333921,
            "count": 3036312,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994995666,
            "variance": 0.249499817
          },
          {
            "average": 0,
            "count": 3036312,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3036312,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3036312,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2265086724,
            "count": 3036312,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4185720385,
            "variance": 0.1752025514
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100662.9639,
          2368597.718,
          -8.295581906,
          -100167.1039,
          2369071.298,
          30.02441809
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100662.963914854,
                2368597.717662475,
                -8.295581906202875
              ],
              [
                -100662.963914854,
                2369071.297662475,
                -8.295581906202875
              ],
              [
                -100167.10391485401,
                2369071.297662475,
                30.024418093797124
              ],
              [
                -100167.10391485401,
                2368597.717662475,
                30.024418093797124
              ],
              [
                -100662.963914854,
                2368597.717662475,
                -8.295581906202875
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:40:10+00:00",
        "end_time": "2018-09-08T04:02:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2173.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2173.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2173.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2173.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7439173,
            71.29647533,
            -8.295581906,
            -156.7298859,
            71.30101032,
            30.02441809
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74338437066652,
                  71.29647532819398,
                  -8.295581906202875
                ],
                [
                  -156.74391732972794,
                  71.3008226096477,
                  -8.295581906202875
                ],
                [
                  -156.73041621406784,
                  71.30101032456493,
                  30.024418093797124
                ],
                [
                  -156.72988587144158,
                  71.29666300115683,
                  30.024418093797124
                ],
                [
                  -156.74338437066652,
                  71.29647532819398,
                  -8.295581906202875
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2173.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2173.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:40:10Z",
            "pc:count": 3036312,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100417.7572,
                "count": 3036312,
                "maximum": -100167.1039,
                "minimum": -100662.9639,
                "name": "X",
                "position": 0,
                "stddev": 135.3590852,
                "variance": 18322.08194
              },
              {
                "average": 2368842.685,
                "count": 3036312,
                "maximum": 2369071.298,
                "minimum": 2368597.718,
                "name": "Y",
                "position": 1,
                "stddev": 127.2585211,
                "variance": 16194.7312
              },
              {
                "average": 7.738888784,
                "count": 3036312,
                "maximum": 30.02441809,
                "minimum": -8.295581906,
                "name": "Z",
                "position": 2,
                "stddev": 2.378261349,
                "variance": 5.656127043
              },
              {
                "average": 34852.46765,
                "count": 3036312,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12335.01103,
                "variance": 152152497.2
              },
              {
                "average": 1.015805029,
                "count": 3036312,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1280226574,
                "variance": 0.0163898008
              },
              {
                "average": 1.031635089,
                "count": 3036312,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1820421204,
                "variance": 0.03313933361
              },
              {
                "average": 0.4998850579,
                "count": 3036312,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000691,
                "variance": 0.2500000691
              },
              {
                "average": 0.0004353966259,
                "count": 3036312,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02086162024,
                "variance": 0.000435207199
              },
              {
                "average": 1.883697723,
                "count": 3036312,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.780095138,
                "variance": 3.168738702
              },
              {
                "average": -0.2198794111,
                "count": 3036312,
                "maximum": 16.34399986,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43890857,
                "variance": 108.970812
              },
              {
                "average": 0.4776333921,
                "count": 3036312,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994995666,
                "variance": 0.249499817
              },
              {
                "average": 407.2047626,
                "count": 3036312,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9321421887,
                "variance": 0.86888906
              },
              {
                "average": 220415709.7,
                "count": 3036312,
                "maximum": 220416810.4,
                "minimum": 220414527.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.0600392,
                "variance": 287360.3657
              },
              {
                "average": 0.4776333921,
                "count": 3036312,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994995666,
                "variance": 0.249499817
              },
              {
                "average": 0,
                "count": 3036312,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3036312,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3036312,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2265086724,
                "count": 3036312,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4185720385,
                "variance": 0.1752025514
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100662.9639,
              2368597.718,
              -8.295581906,
              -100167.1039,
              2369071.298,
              30.02441809
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100662.963914854,
                    2368597.717662475,
                    -8.295581906202875
                  ],
                  [
                    -100662.963914854,
                    2369071.297662475,
                    -8.295581906202875
                  ],
                  [
                    -100167.10391485401,
                    2369071.297662475,
                    30.024418093797124
                  ],
                  [
                    -100167.10391485401,
                    2368597.717662475,
                    30.024418093797124
                  ],
                  [
                    -100662.963914854,
                    2368597.717662475,
                    -8.295581906202875
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:40:10+00:00",
            "end_time": "2018-09-08T04:02:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2123.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64182155057935,
              71.28757282897804,
              -40.588280419420926
            ],
            [
              -156.64233469393758,
              71.2919210368107,
              -40.588280419420926
            ],
            [
              -156.62883702168392,
              71.29210179274241,
              559.0917195805791
            ],
            [
              -156.62832649409245,
              71.28775354452286,
              559.0917195805791
            ],
            [
              -156.64182155057935,
              71.28757282897804,
              -40.588280419420926
            ]
          ]
        ]
      },
      "bbox": [
        -156.6423347,
        71.28757283,
        -40.58828042,
        -156.6283265,
        71.29210179,
        559.0917196
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:22Z",
        "pc:count": 4059993,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96729.92634,
            "count": 4059993,
            "maximum": -96480.96216,
            "minimum": -96976.86216,
            "name": "X",
            "position": 0,
            "stddev": 135.7382661,
            "variance": 18424.87687
          },
          {
            "average": 2367700.553,
            "count": 4059993,
            "maximum": 2367952.04,
            "minimum": 2367478.36,
            "name": "Y",
            "position": 1,
            "stddev": 129.5900827,
            "variance": 16793.58954
          },
          {
            "average": 5.513523867,
            "count": 4059993,
            "maximum": 559.0917196,
            "minimum": -40.58828042,
            "name": "Z",
            "position": 2,
            "stddev": 0.7394982298,
            "variance": 0.5468576319
          },
          {
            "average": 35354.74751,
            "count": 4059993,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13047.1187,
            "variance": 170227306.5
          },
          {
            "average": 1.000033005,
            "count": 4059993,
            "maximum": 12,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01431521648,
            "variance": 0.0002049254228
          },
          {
            "average": 1.00006601,
            "count": 4059993,
            "maximum": 12,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02411991269,
            "variance": 0.0005817701881
          },
          {
            "average": 0.4985087413,
            "count": 4059993,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999978377,
            "variance": 0.2499978377
          },
          {
            "average": 0.00053152801,
            "count": 4059993,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0230487661,
            "variance": 0.0005312456188
          },
          {
            "average": 1.242954606,
            "count": 4059993,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4308722164,
            "variance": 0.1856508669
          },
          {
            "average": 1.310610971,
            "count": 4059993,
            "maximum": 20.39999962,
            "minimum": -19.60199928,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78051069,
            "variance": 116.2194106
          },
          {
            "average": 0.4932104563,
            "count": 4059993,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999539615,
            "variance": 0.2499539637
          },
          {
            "average": 425.1657345,
            "count": 4059993,
            "maximum": 458,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.26754657,
            "variance": 298.1681647
          },
          {
            "average": 220488486.7,
            "count": 4059993,
            "maximum": 220723482.4,
            "minimum": 220419473.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 126336.7377,
            "variance": 15960971300.0
          },
          {
            "average": 0.4932104563,
            "count": 4059993,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999539615,
            "variance": 0.2499539637
          },
          {
            "average": 0,
            "count": 4059993,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4059993,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4059993,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2393260284,
            "count": 4059993,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4266721521,
            "variance": 0.1820491254
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96976.86216,
          2367478.36,
          -40.58828042,
          -96480.96216,
          2367952.04,
          559.0917196
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96976.86215643668,
                2367478.360016603,
                -40.588280419420926
              ],
              [
                -96976.86215643668,
                2367952.0400166027,
                -40.588280419420926
              ],
              [
                -96480.96215643668,
                2367952.0400166027,
                559.0917195805791
              ],
              [
                -96480.96215643668,
                2367478.360016603,
                559.0917195805791
              ],
              [
                -96976.86215643668,
                2367478.360016603,
                -40.588280419420926
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:22+00:00",
        "end_time": "2018-09-08T05:24:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2123.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2123.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2123.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2123.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6423347,
            71.28757283,
            -40.58828042,
            -156.6283265,
            71.29210179,
            559.0917196
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64182155057935,
                  71.28757282897804,
                  -40.588280419420926
                ],
                [
                  -156.64233469393758,
                  71.2919210368107,
                  -40.588280419420926
                ],
                [
                  -156.62883702168392,
                  71.29210179274241,
                  559.0917195805791
                ],
                [
                  -156.62832649409245,
                  71.28775354452286,
                  559.0917195805791
                ],
                [
                  -156.64182155057935,
                  71.28757282897804,
                  -40.588280419420926
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2123.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2123.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:22Z",
            "pc:count": 4059993,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96729.92634,
                "count": 4059993,
                "maximum": -96480.96216,
                "minimum": -96976.86216,
                "name": "X",
                "position": 0,
                "stddev": 135.7382661,
                "variance": 18424.87687
              },
              {
                "average": 2367700.553,
                "count": 4059993,
                "maximum": 2367952.04,
                "minimum": 2367478.36,
                "name": "Y",
                "position": 1,
                "stddev": 129.5900827,
                "variance": 16793.58954
              },
              {
                "average": 5.513523867,
                "count": 4059993,
                "maximum": 559.0917196,
                "minimum": -40.58828042,
                "name": "Z",
                "position": 2,
                "stddev": 0.7394982298,
                "variance": 0.5468576319
              },
              {
                "average": 35354.74751,
                "count": 4059993,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13047.1187,
                "variance": 170227306.5
              },
              {
                "average": 1.000033005,
                "count": 4059993,
                "maximum": 12,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01431521648,
                "variance": 0.0002049254228
              },
              {
                "average": 1.00006601,
                "count": 4059993,
                "maximum": 12,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02411991269,
                "variance": 0.0005817701881
              },
              {
                "average": 0.4985087413,
                "count": 4059993,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999978377,
                "variance": 0.2499978377
              },
              {
                "average": 0.00053152801,
                "count": 4059993,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0230487661,
                "variance": 0.0005312456188
              },
              {
                "average": 1.242954606,
                "count": 4059993,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4308722164,
                "variance": 0.1856508669
              },
              {
                "average": 1.310610971,
                "count": 4059993,
                "maximum": 20.39999962,
                "minimum": -19.60199928,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78051069,
                "variance": 116.2194106
              },
              {
                "average": 0.4932104563,
                "count": 4059993,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999539615,
                "variance": 0.2499539637
              },
              {
                "average": 425.1657345,
                "count": 4059993,
                "maximum": 458,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.26754657,
                "variance": 298.1681647
              },
              {
                "average": 220488486.7,
                "count": 4059993,
                "maximum": 220723482.4,
                "minimum": 220419473.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 126336.7377,
                "variance": 15960971300.0
              },
              {
                "average": 0.4932104563,
                "count": 4059993,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999539615,
                "variance": 0.2499539637
              },
              {
                "average": 0,
                "count": 4059993,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4059993,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4059993,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2393260284,
                "count": 4059993,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4266721521,
                "variance": 0.1820491254
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96976.86216,
              2367478.36,
              -40.58828042,
              -96480.96216,
              2367952.04,
              559.0917196
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96976.86215643668,
                    2367478.360016603,
                    -40.588280419420926
                  ],
                  [
                    -96976.86215643668,
                    2367952.0400166027,
                    -40.588280419420926
                  ],
                  [
                    -96480.96215643668,
                    2367952.0400166027,
                    559.0917195805791
                  ],
                  [
                    -96480.96215643668,
                    2367478.360016603,
                    559.0917195805791
                  ],
                  [
                    -96976.86215643668,
                    2367478.360016603,
                    -40.588280419420926
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:22+00:00",
            "end_time": "2018-09-08T05:24:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1828.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84771800299848,
              71.2602540292713,
              7.729578105704842
            ],
            [
              -156.84827039517754,
              71.26460051319863,
              7.729578105704842
            ],
            [
              -156.8347974127924,
              71.26479525519434,
              13.549578105704843
            ],
            [
              -156.83424762719267,
              71.26044872784091,
              13.549578105704843
            ],
            [
              -156.84771800299848,
              71.2602540292713,
              7.729578105704842
            ]
          ]
        ]
      },
      "bbox": [
        -156.8482704,
        71.26025403,
        7.729578106,
        -156.8342476,
        71.26479526,
        13.54957811
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:01Z",
        "pc:count": 2966360,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104409.6125,
            "count": 2966360,
            "maximum": -104162.3381,
            "minimum": -104657.9981,
            "name": "X",
            "position": 0,
            "stddev": 135.6697015,
            "variance": 18406.26792
          },
          {
            "average": 2365061.141,
            "count": 2966360,
            "maximum": 2365293.118,
            "minimum": 2364819.478,
            "name": "Y",
            "position": 1,
            "stddev": 129.8510131,
            "variance": 16861.28562
          },
          {
            "average": 9.510823467,
            "count": 2966360,
            "maximum": 13.54957811,
            "minimum": 7.729578106,
            "name": "Z",
            "position": 2,
            "stddev": 0.4379278835,
            "variance": 0.1917808311
          },
          {
            "average": 39702.85607,
            "count": 2966360,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11381.25317,
            "variance": 129532923.8
          },
          {
            "average": 1.000032026,
            "count": 2966360,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005659042992,
            "variance": 3.202476759e-05
          },
          {
            "average": 1.000064052,
            "count": 2966360,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.008002967192,
            "variance": 6.404748387e-05
          },
          {
            "average": 0.5016319665,
            "count": 2966360,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997421,
            "variance": 0.249997421
          },
          {
            "average": 0.0004375733222,
            "count": 2966360,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02091367971,
            "variance": 0.0004373819992
          },
          {
            "average": 1.302632519,
            "count": 2966360,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4623913502,
            "variance": 0.2138057608
          },
          {
            "average": 1.633086835,
            "count": 2966360,
            "maximum": 16.41600037,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72494498,
            "variance": 115.0244448
          },
          {
            "average": 0.5445006675,
            "count": 2966360,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980158373,
            "variance": 0.2480197742
          },
          {
            "average": 408.3778554,
            "count": 2966360,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.00585855,
            "variance": 1.011751423
          },
          {
            "average": 220416401.4,
            "count": 2966360,
            "maximum": 220417161.3,
            "minimum": 220415745.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 554.272522,
            "variance": 307218.0286
          },
          {
            "average": 0.5445006675,
            "count": 2966360,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980158373,
            "variance": 0.2480197742
          },
          {
            "average": 0,
            "count": 2966360,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2966360,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2966360,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.27926516,
            "count": 2966360,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4486381596,
            "variance": 0.2012761983
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104657.9981,
          2364819.478,
          7.729578106,
          -104162.3381,
          2365293.118,
          13.54957811
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104657.99809048242,
                2364819.4782127743,
                7.729578105704842
              ],
              [
                -104657.99809048242,
                2365293.118212774,
                7.729578105704842
              ],
              [
                -104162.33809048242,
                2365293.118212774,
                13.549578105704843
              ],
              [
                -104162.33809048242,
                2364819.4782127743,
                13.549578105704843
              ],
              [
                -104657.99809048242,
                2364819.4782127743,
                7.729578105704842
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:01+00:00",
        "end_time": "2018-09-08T04:22:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1828.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1828.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1828.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1828.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8482704,
            71.26025403,
            7.729578106,
            -156.8342476,
            71.26479526,
            13.54957811
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84771800299848,
                  71.2602540292713,
                  7.729578105704842
                ],
                [
                  -156.84827039517754,
                  71.26460051319863,
                  7.729578105704842
                ],
                [
                  -156.8347974127924,
                  71.26479525519434,
                  13.549578105704843
                ],
                [
                  -156.83424762719267,
                  71.26044872784091,
                  13.549578105704843
                ],
                [
                  -156.84771800299848,
                  71.2602540292713,
                  7.729578105704842
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1828.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1828.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:01Z",
            "pc:count": 2966360,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104409.6125,
                "count": 2966360,
                "maximum": -104162.3381,
                "minimum": -104657.9981,
                "name": "X",
                "position": 0,
                "stddev": 135.6697015,
                "variance": 18406.26792
              },
              {
                "average": 2365061.141,
                "count": 2966360,
                "maximum": 2365293.118,
                "minimum": 2364819.478,
                "name": "Y",
                "position": 1,
                "stddev": 129.8510131,
                "variance": 16861.28562
              },
              {
                "average": 9.510823467,
                "count": 2966360,
                "maximum": 13.54957811,
                "minimum": 7.729578106,
                "name": "Z",
                "position": 2,
                "stddev": 0.4379278835,
                "variance": 0.1917808311
              },
              {
                "average": 39702.85607,
                "count": 2966360,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11381.25317,
                "variance": 129532923.8
              },
              {
                "average": 1.000032026,
                "count": 2966360,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005659042992,
                "variance": 3.202476759e-05
              },
              {
                "average": 1.000064052,
                "count": 2966360,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.008002967192,
                "variance": 6.404748387e-05
              },
              {
                "average": 0.5016319665,
                "count": 2966360,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997421,
                "variance": 0.249997421
              },
              {
                "average": 0.0004375733222,
                "count": 2966360,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02091367971,
                "variance": 0.0004373819992
              },
              {
                "average": 1.302632519,
                "count": 2966360,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4623913502,
                "variance": 0.2138057608
              },
              {
                "average": 1.633086835,
                "count": 2966360,
                "maximum": 16.41600037,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72494498,
                "variance": 115.0244448
              },
              {
                "average": 0.5445006675,
                "count": 2966360,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980158373,
                "variance": 0.2480197742
              },
              {
                "average": 408.3778554,
                "count": 2966360,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.00585855,
                "variance": 1.011751423
              },
              {
                "average": 220416401.4,
                "count": 2966360,
                "maximum": 220417161.3,
                "minimum": 220415745.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 554.272522,
                "variance": 307218.0286
              },
              {
                "average": 0.5445006675,
                "count": 2966360,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980158373,
                "variance": 0.2480197742
              },
              {
                "average": 0,
                "count": 2966360,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2966360,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2966360,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.27926516,
                "count": 2966360,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4486381596,
                "variance": 0.2012761983
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104657.9981,
              2364819.478,
              7.729578106,
              -104162.3381,
              2365293.118,
              13.54957811
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104657.99809048242,
                    2364819.4782127743,
                    7.729578105704842
                  ],
                  [
                    -104657.99809048242,
                    2365293.118212774,
                    7.729578105704842
                  ],
                  [
                    -104162.33809048242,
                    2365293.118212774,
                    13.549578105704843
                  ],
                  [
                    -104162.33809048242,
                    2364819.4782127743,
                    13.549578105704843
                  ],
                  [
                    -104657.99809048242,
                    2364819.4782127743,
                    7.729578105704842
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:01+00:00",
            "end_time": "2018-09-08T04:22:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1975.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80873216681618,
              71.27230762812513,
              11.756708581043783
            ],
            [
              -156.80927727121016,
              71.27665438935084,
              11.756708581043783
            ],
            [
              -156.79579670622815,
              71.27684647588966,
              30.836708581043787
            ],
            [
              -156.7952542113686,
              71.27249967179746,
              30.836708581043787
            ],
            [
              -156.80873216681618,
              71.27230762812513,
              11.756708581043783
            ]
          ]
        ]
      },
      "bbox": [
        -156.8092773,
        71.27230763,
        11.75670858,
        -156.7952542,
        71.27684648,
        30.83670858
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:32Z",
        "pc:count": 2988011,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102922.52,
            "count": 2988011,
            "maximum": -102674.9266,
            "minimum": -103170.5866,
            "name": "X",
            "position": 0,
            "stddev": 136.5690165,
            "variance": 18651.09628
          },
          {
            "average": 2366305.995,
            "count": 2988011,
            "maximum": 2366543.156,
            "minimum": 2366069.536,
            "name": "Y",
            "position": 1,
            "stddev": 128.1179931,
            "variance": 16414.22016
          },
          {
            "average": 14.37324788,
            "count": 2988011,
            "maximum": 30.83670858,
            "minimum": 11.75670858,
            "name": "Z",
            "position": 2,
            "stddev": 1.020921736,
            "variance": 1.042281192
          },
          {
            "average": 40597.92078,
            "count": 2988011,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11809.34082,
            "variance": 139460530.5
          },
          {
            "average": 1.002642561,
            "count": 2988011,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05212071245,
            "variance": 0.002716568667
          },
          {
            "average": 1.005287798,
            "count": 2988011,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0741809308,
            "variance": 0.005502810494
          },
          {
            "average": 0.5024787392,
            "count": 2988011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999939395,
            "variance": 0.2499939395
          },
          {
            "average": 0.0004374147217,
            "count": 2988011,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02090989087,
            "variance": 0.0004372235364
          },
          {
            "average": 1.364160641,
            "count": 2988011,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6610599097,
            "variance": 0.4370002043
          },
          {
            "average": 1.179167726,
            "count": 2988011,
            "maximum": 16.33200073,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62307896,
            "variance": 112.8498065
          },
          {
            "average": 0.5351780833,
            "count": 2988011,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987610507,
            "variance": 0.2487625857
          },
          {
            "average": 408.3129791,
            "count": 2988011,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9738900856,
            "variance": 0.9484618988
          },
          {
            "average": 220416368.8,
            "count": 2988011,
            "maximum": 220417192.5,
            "minimum": 220415712.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 544.0118205,
            "variance": 295948.8608
          },
          {
            "average": 0.5351780833,
            "count": 2988011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987610507,
            "variance": 0.2487625857
          },
          {
            "average": 0,
            "count": 2988011,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2988011,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2988011,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2689320756,
            "count": 2988011,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.443404646,
            "variance": 0.1966076801
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103170.5866,
          2366069.536,
          11.75670858,
          -102674.9266,
          2366543.156,
          30.83670858
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103170.58662094832,
                2366069.536009505,
                11.756708581043783
              ],
              [
                -103170.58662094832,
                2366543.156009505,
                11.756708581043783
              ],
              [
                -102674.92662094832,
                2366543.156009505,
                30.836708581043787
              ],
              [
                -102674.92662094832,
                2366069.536009505,
                30.836708581043787
              ],
              [
                -103170.58662094832,
                2366069.536009505,
                11.756708581043783
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:32+00:00",
        "end_time": "2018-09-08T04:21:52+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1975.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1975.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1975.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1975.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8092773,
            71.27230763,
            11.75670858,
            -156.7952542,
            71.27684648,
            30.83670858
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80873216681618,
                  71.27230762812513,
                  11.756708581043783
                ],
                [
                  -156.80927727121016,
                  71.27665438935084,
                  11.756708581043783
                ],
                [
                  -156.79579670622815,
                  71.27684647588966,
                  30.836708581043787
                ],
                [
                  -156.7952542113686,
                  71.27249967179746,
                  30.836708581043787
                ],
                [
                  -156.80873216681618,
                  71.27230762812513,
                  11.756708581043783
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1975.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1975.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:32Z",
            "pc:count": 2988011,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102922.52,
                "count": 2988011,
                "maximum": -102674.9266,
                "minimum": -103170.5866,
                "name": "X",
                "position": 0,
                "stddev": 136.5690165,
                "variance": 18651.09628
              },
              {
                "average": 2366305.995,
                "count": 2988011,
                "maximum": 2366543.156,
                "minimum": 2366069.536,
                "name": "Y",
                "position": 1,
                "stddev": 128.1179931,
                "variance": 16414.22016
              },
              {
                "average": 14.37324788,
                "count": 2988011,
                "maximum": 30.83670858,
                "minimum": 11.75670858,
                "name": "Z",
                "position": 2,
                "stddev": 1.020921736,
                "variance": 1.042281192
              },
              {
                "average": 40597.92078,
                "count": 2988011,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11809.34082,
                "variance": 139460530.5
              },
              {
                "average": 1.002642561,
                "count": 2988011,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05212071245,
                "variance": 0.002716568667
              },
              {
                "average": 1.005287798,
                "count": 2988011,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0741809308,
                "variance": 0.005502810494
              },
              {
                "average": 0.5024787392,
                "count": 2988011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999939395,
                "variance": 0.2499939395
              },
              {
                "average": 0.0004374147217,
                "count": 2988011,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02090989087,
                "variance": 0.0004372235364
              },
              {
                "average": 1.364160641,
                "count": 2988011,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6610599097,
                "variance": 0.4370002043
              },
              {
                "average": 1.179167726,
                "count": 2988011,
                "maximum": 16.33200073,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62307896,
                "variance": 112.8498065
              },
              {
                "average": 0.5351780833,
                "count": 2988011,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987610507,
                "variance": 0.2487625857
              },
              {
                "average": 408.3129791,
                "count": 2988011,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9738900856,
                "variance": 0.9484618988
              },
              {
                "average": 220416368.8,
                "count": 2988011,
                "maximum": 220417192.5,
                "minimum": 220415712.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 544.0118205,
                "variance": 295948.8608
              },
              {
                "average": 0.5351780833,
                "count": 2988011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987610507,
                "variance": 0.2487625857
              },
              {
                "average": 0,
                "count": 2988011,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2988011,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2988011,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2689320756,
                "count": 2988011,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.443404646,
                "variance": 0.1966076801
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103170.5866,
              2366069.536,
              11.75670858,
              -102674.9266,
              2366543.156,
              30.83670858
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103170.58662094832,
                    2366069.536009505,
                    11.756708581043783
                  ],
                  [
                    -103170.58662094832,
                    2366543.156009505,
                    11.756708581043783
                  ],
                  [
                    -102674.92662094832,
                    2366543.156009505,
                    30.836708581043787
                  ],
                  [
                    -102674.92662094832,
                    2366069.536009505,
                    30.836708581043787
                  ],
                  [
                    -103170.58662094832,
                    2366069.536009505,
                    11.756708581043783
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:32+00:00",
            "end_time": "2018-09-08T04:21:52+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1774.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.87344274690867,
              71.25631226655341,
              0.863377026084474
            ],
            [
              -156.8739999809482,
              71.2606581958805,
              0.863377026084474
            ],
            [
              -156.86053448290897,
              71.26085462383755,
              12.303377026084473
            ],
            [
              -156.85997985319264,
              71.25650865072397,
              12.303377026084473
            ],
            [
              -156.87344274690867,
              71.25631226655341,
              0.863377026084474
            ]
          ]
        ]
      },
      "bbox": [
        -156.874,
        71.25631227,
        0.8633770261,
        -156.8599799,
        71.26085462,
        12.30337703
      ],
      "properties": {
        "datetime": "2018-09-08T04:42:05Z",
        "pc:count": 2358754,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105347.3414,
            "count": 2358754,
            "maximum": -105125.9171,
            "minimum": -105621.3971,
            "name": "X",
            "position": 0,
            "stddev": 135.2231334,
            "variance": 18285.2958
          },
          {
            "average": 2364646.577,
            "count": 2358754,
            "maximum": 2364905.049,
            "minimum": 2364431.449,
            "name": "Y",
            "position": 1,
            "stddev": 126.9949084,
            "variance": 16127.70675
          },
          {
            "average": 4.615449688,
            "count": 2358754,
            "maximum": 12.30337703,
            "minimum": 0.8633770261,
            "name": "Z",
            "position": 2,
            "stddev": 4.462464883,
            "variance": 19.91359283
          },
          {
            "average": 25657.33566,
            "count": 2358754,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17033.2308,
            "variance": 290130951.4
          },
          {
            "average": 1.000001696,
            "count": 2358754,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001302232094,
            "variance": 1.695808428e-06
          },
          {
            "average": 1.000003392,
            "count": 2358754,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001841632728,
            "variance": 3.391611104e-06
          },
          {
            "average": 0.4948833155,
            "count": 2358754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999739248,
            "variance": 0.2499739255
          },
          {
            "average": 0.0004273442674,
            "count": 2358754,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02066789359,
            "variance": 0.0004271618253
          },
          {
            "average": 4.686052467,
            "count": 2358754,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.673181312,
            "variance": 13.49226095
          },
          {
            "average": 2.261204832,
            "count": 2358754,
            "maximum": 16.31399918,
            "minimum": -16.27799988,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.861135453,
            "variance": 78.51972152
          },
          {
            "average": 0.4959499804,
            "count": 2358754,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999837031,
            "variance": 0.2499837033
          },
          {
            "average": 407.6799484,
            "count": 2358754,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8001835408,
            "variance": 0.640293699
          },
          {
            "average": 220416035.6,
            "count": 2358754,
            "maximum": 220416925.7,
            "minimum": 220414874.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 461.1242212,
            "variance": 212635.5474
          },
          {
            "average": 0.4959499804,
            "count": 2358754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999837031,
            "variance": 0.2499837033
          },
          {
            "average": 0,
            "count": 2358754,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2358754,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2358754,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1065592258,
            "count": 2358754,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3085520986,
            "variance": 0.09520439753
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105621.3971,
          2364431.449,
          0.8633770261,
          -105125.9171,
          2364905.049,
          12.30337703
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105621.39708128205,
                2364431.448580426,
                0.863377026084474
              ],
              [
                -105621.39708128205,
                2364905.048580426,
                0.863377026084474
              ],
              [
                -105125.91708128204,
                2364905.048580426,
                12.303377026084473
              ],
              [
                -105125.91708128204,
                2364431.448580426,
                12.303377026084473
              ],
              [
                -105621.39708128205,
                2364431.448580426,
                0.863377026084474
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:42:05+00:00",
        "end_time": "2018-09-08T04:07:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1774.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1774.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1774.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1774.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.874,
            71.25631227,
            0.8633770261,
            -156.8599799,
            71.26085462,
            12.30337703
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.87344274690867,
                  71.25631226655341,
                  0.863377026084474
                ],
                [
                  -156.8739999809482,
                  71.2606581958805,
                  0.863377026084474
                ],
                [
                  -156.86053448290897,
                  71.26085462383755,
                  12.303377026084473
                ],
                [
                  -156.85997985319264,
                  71.25650865072397,
                  12.303377026084473
                ],
                [
                  -156.87344274690867,
                  71.25631226655341,
                  0.863377026084474
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1774.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1774.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:42:05Z",
            "pc:count": 2358754,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105347.3414,
                "count": 2358754,
                "maximum": -105125.9171,
                "minimum": -105621.3971,
                "name": "X",
                "position": 0,
                "stddev": 135.2231334,
                "variance": 18285.2958
              },
              {
                "average": 2364646.577,
                "count": 2358754,
                "maximum": 2364905.049,
                "minimum": 2364431.449,
                "name": "Y",
                "position": 1,
                "stddev": 126.9949084,
                "variance": 16127.70675
              },
              {
                "average": 4.615449688,
                "count": 2358754,
                "maximum": 12.30337703,
                "minimum": 0.8633770261,
                "name": "Z",
                "position": 2,
                "stddev": 4.462464883,
                "variance": 19.91359283
              },
              {
                "average": 25657.33566,
                "count": 2358754,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17033.2308,
                "variance": 290130951.4
              },
              {
                "average": 1.000001696,
                "count": 2358754,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001302232094,
                "variance": 1.695808428e-06
              },
              {
                "average": 1.000003392,
                "count": 2358754,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001841632728,
                "variance": 3.391611104e-06
              },
              {
                "average": 0.4948833155,
                "count": 2358754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999739248,
                "variance": 0.2499739255
              },
              {
                "average": 0.0004273442674,
                "count": 2358754,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02066789359,
                "variance": 0.0004271618253
              },
              {
                "average": 4.686052467,
                "count": 2358754,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.673181312,
                "variance": 13.49226095
              },
              {
                "average": 2.261204832,
                "count": 2358754,
                "maximum": 16.31399918,
                "minimum": -16.27799988,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.861135453,
                "variance": 78.51972152
              },
              {
                "average": 0.4959499804,
                "count": 2358754,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999837031,
                "variance": 0.2499837033
              },
              {
                "average": 407.6799484,
                "count": 2358754,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8001835408,
                "variance": 0.640293699
              },
              {
                "average": 220416035.6,
                "count": 2358754,
                "maximum": 220416925.7,
                "minimum": 220414874.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 461.1242212,
                "variance": 212635.5474
              },
              {
                "average": 0.4959499804,
                "count": 2358754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999837031,
                "variance": 0.2499837033
              },
              {
                "average": 0,
                "count": 2358754,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2358754,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2358754,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1065592258,
                "count": 2358754,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3085520986,
                "variance": 0.09520439753
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105621.3971,
              2364431.449,
              0.8633770261,
              -105125.9171,
              2364905.049,
              12.30337703
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105621.39708128205,
                    2364431.448580426,
                    0.863377026084474
                  ],
                  [
                    -105621.39708128205,
                    2364905.048580426,
                    0.863377026084474
                  ],
                  [
                    -105125.91708128204,
                    2364905.048580426,
                    12.303377026084473
                  ],
                  [
                    -105125.91708128204,
                    2364431.448580426,
                    12.303377026084473
                  ],
                  [
                    -105621.39708128205,
                    2364431.448580426,
                    0.863377026084474
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:42:05+00:00",
            "end_time": "2018-09-08T04:07:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2049.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75720251175116,
              71.28017251161481,
              8.02538452113093
            ],
            [
              -156.75773783180216,
              71.28451982805477,
              8.02538452113093
            ],
            [
              -156.74424937649889,
              71.28470843186886,
              12.86538452113093
            ],
            [
              -156.74371666879122,
              71.28036107331516,
              12.86538452113093
            ],
            [
              -156.75720251175116,
              71.28017251161481,
              8.02538452113093
            ]
          ]
        ]
      },
      "bbox": [
        -156.7577378,
        71.28017251,
        8.025384521,
        -156.7437167,
        71.28470843,
        12.86538452
      ],
      "properties": {
        "datetime": "2018-09-08T05:05:40Z",
        "pc:count": 2924833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100993.1969,
            "count": 2924833,
            "maximum": -100747.597,
            "minimum": -101243.357,
            "name": "X",
            "position": 0,
            "stddev": 136.2315387,
            "variance": 18559.03213
          },
          {
            "average": 2367079.857,
            "count": 2924833,
            "maximum": 2367319.296,
            "minimum": 2366845.656,
            "name": "Y",
            "position": 1,
            "stddev": 128.7476234,
            "variance": 16575.95053
          },
          {
            "average": 10.94635745,
            "count": 2924833,
            "maximum": 12.86538452,
            "minimum": 8.025384521,
            "name": "Z",
            "position": 2,
            "stddev": 0.7210171081,
            "variance": 0.5198656702
          },
          {
            "average": 44010.45105,
            "count": 2924833,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9407.944481,
            "variance": 88509419.36
          },
          {
            "average": 1.000028036,
            "count": 2924833,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005294809939,
            "variance": 2.803501229e-05
          },
          {
            "average": 1.000056072,
            "count": 2924833,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007487887056,
            "variance": 5.606845257e-05
          },
          {
            "average": 0.5008197049,
            "count": 2924833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999994136,
            "variance": 0.2499994136
          },
          {
            "average": 0.0004020742381,
            "count": 2924833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02004776077,
            "variance": 0.0004019127118
          },
          {
            "average": 1.332421714,
            "count": 2924833,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5465878216,
            "variance": 0.2987582468
          },
          {
            "average": 0.2232703338,
            "count": 2924833,
            "maximum": 16.31399918,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.22011572,
            "variance": 104.4507653
          },
          {
            "average": 0.4967551994,
            "count": 2924833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999895566,
            "variance": 0.2499895567
          },
          {
            "average": 409.9773409,
            "count": 2924833,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8978728386,
            "variance": 0.8061756343
          },
          {
            "average": 220417310.1,
            "count": 2924833,
            "maximum": 220418340.3,
            "minimum": 220416085.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 510.3531559,
            "variance": 260460.3438
          },
          {
            "average": 0.4967551994,
            "count": 2924833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999895566,
            "variance": 0.2499895567
          },
          {
            "average": 0,
            "count": 2924833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2924833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2924833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2211182656,
            "count": 2924833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4150000447,
            "variance": 0.1722250371
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101243.357,
          2366845.656,
          8.025384521,
          -100747.597,
          2367319.296,
          12.86538452
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101243.35699043458,
                2366845.655521516,
                8.02538452113093
              ],
              [
                -101243.35699043458,
                2367319.295521516,
                8.02538452113093
              ],
              [
                -100747.59699043457,
                2367319.295521516,
                12.86538452113093
              ],
              [
                -100747.59699043457,
                2366845.655521516,
                12.86538452113093
              ],
              [
                -101243.35699043458,
                2366845.655521516,
                8.02538452113093
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:05:40+00:00",
        "end_time": "2018-09-08T04:28:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2049.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2049.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2049.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2049.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7577378,
            71.28017251,
            8.025384521,
            -156.7437167,
            71.28470843,
            12.86538452
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75720251175116,
                  71.28017251161481,
                  8.02538452113093
                ],
                [
                  -156.75773783180216,
                  71.28451982805477,
                  8.02538452113093
                ],
                [
                  -156.74424937649889,
                  71.28470843186886,
                  12.86538452113093
                ],
                [
                  -156.74371666879122,
                  71.28036107331516,
                  12.86538452113093
                ],
                [
                  -156.75720251175116,
                  71.28017251161481,
                  8.02538452113093
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2049.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2049.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:05:40Z",
            "pc:count": 2924833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100993.1969,
                "count": 2924833,
                "maximum": -100747.597,
                "minimum": -101243.357,
                "name": "X",
                "position": 0,
                "stddev": 136.2315387,
                "variance": 18559.03213
              },
              {
                "average": 2367079.857,
                "count": 2924833,
                "maximum": 2367319.296,
                "minimum": 2366845.656,
                "name": "Y",
                "position": 1,
                "stddev": 128.7476234,
                "variance": 16575.95053
              },
              {
                "average": 10.94635745,
                "count": 2924833,
                "maximum": 12.86538452,
                "minimum": 8.025384521,
                "name": "Z",
                "position": 2,
                "stddev": 0.7210171081,
                "variance": 0.5198656702
              },
              {
                "average": 44010.45105,
                "count": 2924833,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9407.944481,
                "variance": 88509419.36
              },
              {
                "average": 1.000028036,
                "count": 2924833,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005294809939,
                "variance": 2.803501229e-05
              },
              {
                "average": 1.000056072,
                "count": 2924833,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007487887056,
                "variance": 5.606845257e-05
              },
              {
                "average": 0.5008197049,
                "count": 2924833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999994136,
                "variance": 0.2499994136
              },
              {
                "average": 0.0004020742381,
                "count": 2924833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02004776077,
                "variance": 0.0004019127118
              },
              {
                "average": 1.332421714,
                "count": 2924833,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5465878216,
                "variance": 0.2987582468
              },
              {
                "average": 0.2232703338,
                "count": 2924833,
                "maximum": 16.31399918,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.22011572,
                "variance": 104.4507653
              },
              {
                "average": 0.4967551994,
                "count": 2924833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999895566,
                "variance": 0.2499895567
              },
              {
                "average": 409.9773409,
                "count": 2924833,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8978728386,
                "variance": 0.8061756343
              },
              {
                "average": 220417310.1,
                "count": 2924833,
                "maximum": 220418340.3,
                "minimum": 220416085.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 510.3531559,
                "variance": 260460.3438
              },
              {
                "average": 0.4967551994,
                "count": 2924833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999895566,
                "variance": 0.2499895567
              },
              {
                "average": 0,
                "count": 2924833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2924833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2924833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2211182656,
                "count": 2924833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4150000447,
                "variance": 0.1722250371
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101243.357,
              2366845.656,
              8.025384521,
              -100747.597,
              2367319.296,
              12.86538452
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101243.35699043458,
                    2366845.655521516,
                    8.02538452113093
                  ],
                  [
                    -101243.35699043458,
                    2367319.295521516,
                    8.02538452113093
                  ],
                  [
                    -100747.59699043457,
                    2367319.295521516,
                    12.86538452113093
                  ],
                  [
                    -100747.59699043457,
                    2366845.655521516,
                    12.86538452113093
                  ],
                  [
                    -101243.35699043458,
                    2366845.655521516,
                    8.02538452113093
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:05:40+00:00",
            "end_time": "2018-09-08T04:28:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2113.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76943866705474,
              71.28844975187477,
              2.234677059582811
            ],
            [
              -156.7699766055799,
              71.29279764477567,
              2.234677059582811
            ],
            [
              -156.75648381230224,
              71.2929870899659,
              25.61467705958281
            ],
            [
              -156.75594848808691,
              71.28863915473758,
              25.61467705958281
            ],
            [
              -156.76943866705474,
              71.28844975187477,
              2.234677059582811
            ]
          ]
        ]
      },
      "bbox": [
        -156.7699766,
        71.28844975,
        2.23467706,
        -156.7559485,
        71.29298709,
        25.61467706
      ],
      "properties": {
        "datetime": "2018-09-08T04:40:33Z",
        "pc:count": 2097856,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101406.4738,
            "count": 2097856,
            "maximum": -101159.1009,
            "minimum": -101654.8409,
            "name": "X",
            "position": 0,
            "stddev": 141.879489,
            "variance": 20129.7894
          },
          {
            "average": 2367965.738,
            "count": 2097856,
            "maximum": 2368238.263,
            "minimum": 2367764.583,
            "name": "Y",
            "position": 1,
            "stddev": 124.4286228,
            "variance": 15482.48216
          },
          {
            "average": 5.863579239,
            "count": 2097856,
            "maximum": 25.61467706,
            "minimum": 2.23467706,
            "name": "Z",
            "position": 2,
            "stddev": 4.056949622,
            "variance": 16.45884023
          },
          {
            "average": 31717.4884,
            "count": 2097856,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16341.14817,
            "variance": 267033123.6
          },
          {
            "average": 1.015685538,
            "count": 2097856,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1300844951,
            "variance": 0.01692197587
          },
          {
            "average": 1.031365356,
            "count": 2097856,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1866278061,
            "variance": 0.034829938
          },
          {
            "average": 0.49757133,
            "count": 2097856,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999942207,
            "variance": 0.2499942207
          },
          {
            "average": 0.000548178712,
            "count": 2097856,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02340680399,
            "variance": 0.0005478784732
          },
          {
            "average": 3.846695865,
            "count": 2097856,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.349077262,
            "variance": 11.2163185
          },
          {
            "average": 0.2441504658,
            "count": 2097856,
            "maximum": 16.36199951,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.018201648,
            "variance": 81.32796096
          },
          {
            "average": 0.4634197962,
            "count": 2097856,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986602122,
            "variance": 0.2486620072
          },
          {
            "average": 407.3693943,
            "count": 2097856,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8635692032,
            "variance": 0.7457517687
          },
          {
            "average": 220415820.2,
            "count": 2097856,
            "maximum": 220416833,
            "minimum": 220414551,
            "name": "GpsTime",
            "position": 12,
            "stddev": 498.8474174,
            "variance": 248848.7458
          },
          {
            "average": 0.4634197962,
            "count": 2097856,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986602122,
            "variance": 0.2486620072
          },
          {
            "average": 0,
            "count": 2097856,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2097856,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2097856,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1477608568,
            "count": 2097856,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3548628552,
            "variance": 0.125927646
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101654.8409,
          2367764.583,
          2.23467706,
          -101159.1009,
          2368238.263,
          25.61467706
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101654.84094253334,
                2367764.5834301505,
                2.234677059582811
              ],
              [
                -101654.84094253334,
                2368238.26343015,
                2.234677059582811
              ],
              [
                -101159.10094253335,
                2368238.26343015,
                25.61467705958281
              ],
              [
                -101159.10094253335,
                2367764.5834301505,
                25.61467705958281
              ],
              [
                -101654.84094253334,
                2367764.5834301505,
                2.234677059582811
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:40:33+00:00",
        "end_time": "2018-09-08T04:02:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2113.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2113.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2113.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2113.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7699766,
            71.28844975,
            2.23467706,
            -156.7559485,
            71.29298709,
            25.61467706
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76943866705474,
                  71.28844975187477,
                  2.234677059582811
                ],
                [
                  -156.7699766055799,
                  71.29279764477567,
                  2.234677059582811
                ],
                [
                  -156.75648381230224,
                  71.2929870899659,
                  25.61467705958281
                ],
                [
                  -156.75594848808691,
                  71.28863915473758,
                  25.61467705958281
                ],
                [
                  -156.76943866705474,
                  71.28844975187477,
                  2.234677059582811
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2113.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2113.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:40:33Z",
            "pc:count": 2097856,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101406.4738,
                "count": 2097856,
                "maximum": -101159.1009,
                "minimum": -101654.8409,
                "name": "X",
                "position": 0,
                "stddev": 141.879489,
                "variance": 20129.7894
              },
              {
                "average": 2367965.738,
                "count": 2097856,
                "maximum": 2368238.263,
                "minimum": 2367764.583,
                "name": "Y",
                "position": 1,
                "stddev": 124.4286228,
                "variance": 15482.48216
              },
              {
                "average": 5.863579239,
                "count": 2097856,
                "maximum": 25.61467706,
                "minimum": 2.23467706,
                "name": "Z",
                "position": 2,
                "stddev": 4.056949622,
                "variance": 16.45884023
              },
              {
                "average": 31717.4884,
                "count": 2097856,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16341.14817,
                "variance": 267033123.6
              },
              {
                "average": 1.015685538,
                "count": 2097856,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1300844951,
                "variance": 0.01692197587
              },
              {
                "average": 1.031365356,
                "count": 2097856,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1866278061,
                "variance": 0.034829938
              },
              {
                "average": 0.49757133,
                "count": 2097856,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999942207,
                "variance": 0.2499942207
              },
              {
                "average": 0.000548178712,
                "count": 2097856,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02340680399,
                "variance": 0.0005478784732
              },
              {
                "average": 3.846695865,
                "count": 2097856,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.349077262,
                "variance": 11.2163185
              },
              {
                "average": 0.2441504658,
                "count": 2097856,
                "maximum": 16.36199951,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.018201648,
                "variance": 81.32796096
              },
              {
                "average": 0.4634197962,
                "count": 2097856,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986602122,
                "variance": 0.2486620072
              },
              {
                "average": 407.3693943,
                "count": 2097856,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8635692032,
                "variance": 0.7457517687
              },
              {
                "average": 220415820.2,
                "count": 2097856,
                "maximum": 220416833,
                "minimum": 220414551,
                "name": "GpsTime",
                "position": 12,
                "stddev": 498.8474174,
                "variance": 248848.7458
              },
              {
                "average": 0.4634197962,
                "count": 2097856,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986602122,
                "variance": 0.2486620072
              },
              {
                "average": 0,
                "count": 2097856,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2097856,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2097856,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1477608568,
                "count": 2097856,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3548628552,
                "variance": 0.125927646
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101654.8409,
              2367764.583,
              2.23467706,
              -101159.1009,
              2368238.263,
              25.61467706
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101654.84094253334,
                    2367764.5834301505,
                    2.234677059582811
                  ],
                  [
                    -101654.84094253334,
                    2368238.26343015,
                    2.234677059582811
                  ],
                  [
                    -101159.10094253335,
                    2368238.26343015,
                    25.61467705958281
                  ],
                  [
                    -101159.10094253335,
                    2367764.5834301505,
                    25.61467705958281
                  ],
                  [
                    -101654.84094253334,
                    2367764.5834301505,
                    2.234677059582811
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:40:33+00:00",
            "end_time": "2018-09-08T04:02:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1884.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78374061986327,
              71.263950867074,
              9.941057062397917
            ],
            [
              -156.78428069829997,
              71.26829763658336,
              9.941057062397917
            ],
            [
              -156.77080440188274,
              71.26848800798184,
              15.821057062397916
            ],
            [
              -156.770266931416,
              71.26414119600918,
              15.821057062397916
            ],
            [
              -156.78374061986327,
              71.263950867074,
              9.941057062397917
            ]
          ]
        ]
      },
      "bbox": [
        -156.7842807,
        71.26395087,
        9.941057062,
        -156.7702669,
        71.26848801,
        15.82105706
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:04Z",
        "pc:count": 3118502,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102043.7573,
            "count": 3118502,
            "maximum": -101795.5787,
            "minimum": -102291.2587,
            "name": "X",
            "position": 0,
            "stddev": 136.179778,
            "variance": 18544.93194
          },
          {
            "average": 2365352.754,
            "count": 3118502,
            "maximum": 2365595.552,
            "minimum": 2365121.912,
            "name": "Y",
            "position": 1,
            "stddev": 128.6061738,
            "variance": 16539.54794
          },
          {
            "average": 13.46509335,
            "count": 3118502,
            "maximum": 15.82105706,
            "minimum": 9.941057062,
            "name": "Z",
            "position": 2,
            "stddev": 1.175513551,
            "variance": 1.381832108
          },
          {
            "average": 45687.88908,
            "count": 3118502,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 7833.701497,
            "variance": 61366879.15
          },
          {
            "average": 1,
            "count": 3118502,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3118502,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.499166587,
            "count": 3118502,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999993856,
            "variance": 0.2499993856
          },
          {
            "average": 0.0004216768179,
            "count": 3118502,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02053044427,
            "variance": 0.0004214991417
          },
          {
            "average": 1.315950415,
            "count": 3118502,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4651002253,
            "variance": 0.2163182196
          },
          {
            "average": 0.2078143103,
            "count": 3118502,
            "maximum": 16.3920002,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41624171,
            "variance": 108.4980914
          },
          {
            "average": 0.4844393238,
            "count": 3118502,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997578868,
            "variance": 0.2497579454
          },
          {
            "average": 411.8211148,
            "count": 3118502,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9155208303,
            "variance": 0.8381783907
          },
          {
            "average": 220418348.9,
            "count": 3118502,
            "maximum": 220419384.8,
            "minimum": 220417184.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 524.0766229,
            "variance": 274656.3067
          },
          {
            "average": 0.4844393238,
            "count": 3118502,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997578868,
            "variance": 0.2497579454
          },
          {
            "average": 0,
            "count": 3118502,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3118502,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3118502,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2278411237,
            "count": 3118502,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4194396291,
            "variance": 0.1759296025
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102291.2587,
          2365121.912,
          9.941057062,
          -101795.5787,
          2365595.552,
          15.82105706
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102291.25868847068,
                2365121.9118305235,
                9.941057062397917
              ],
              [
                -102291.25868847068,
                2365595.551830523,
                9.941057062397917
              ],
              [
                -101795.57868847069,
                2365595.551830523,
                15.821057062397916
              ],
              [
                -101795.57868847069,
                2365121.9118305235,
                15.821057062397916
              ],
              [
                -102291.25868847068,
                2365121.9118305235,
                9.941057062397917
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:04+00:00",
        "end_time": "2018-09-08T04:46:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1884.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1884.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1884.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1884.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7842807,
            71.26395087,
            9.941057062,
            -156.7702669,
            71.26848801,
            15.82105706
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78374061986327,
                  71.263950867074,
                  9.941057062397917
                ],
                [
                  -156.78428069829997,
                  71.26829763658336,
                  9.941057062397917
                ],
                [
                  -156.77080440188274,
                  71.26848800798184,
                  15.821057062397916
                ],
                [
                  -156.770266931416,
                  71.26414119600918,
                  15.821057062397916
                ],
                [
                  -156.78374061986327,
                  71.263950867074,
                  9.941057062397917
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1884.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1884.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:04Z",
            "pc:count": 3118502,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102043.7573,
                "count": 3118502,
                "maximum": -101795.5787,
                "minimum": -102291.2587,
                "name": "X",
                "position": 0,
                "stddev": 136.179778,
                "variance": 18544.93194
              },
              {
                "average": 2365352.754,
                "count": 3118502,
                "maximum": 2365595.552,
                "minimum": 2365121.912,
                "name": "Y",
                "position": 1,
                "stddev": 128.6061738,
                "variance": 16539.54794
              },
              {
                "average": 13.46509335,
                "count": 3118502,
                "maximum": 15.82105706,
                "minimum": 9.941057062,
                "name": "Z",
                "position": 2,
                "stddev": 1.175513551,
                "variance": 1.381832108
              },
              {
                "average": 45687.88908,
                "count": 3118502,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 7833.701497,
                "variance": 61366879.15
              },
              {
                "average": 1,
                "count": 3118502,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3118502,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.499166587,
                "count": 3118502,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999993856,
                "variance": 0.2499993856
              },
              {
                "average": 0.0004216768179,
                "count": 3118502,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02053044427,
                "variance": 0.0004214991417
              },
              {
                "average": 1.315950415,
                "count": 3118502,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4651002253,
                "variance": 0.2163182196
              },
              {
                "average": 0.2078143103,
                "count": 3118502,
                "maximum": 16.3920002,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41624171,
                "variance": 108.4980914
              },
              {
                "average": 0.4844393238,
                "count": 3118502,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997578868,
                "variance": 0.2497579454
              },
              {
                "average": 411.8211148,
                "count": 3118502,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9155208303,
                "variance": 0.8381783907
              },
              {
                "average": 220418348.9,
                "count": 3118502,
                "maximum": 220419384.8,
                "minimum": 220417184.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 524.0766229,
                "variance": 274656.3067
              },
              {
                "average": 0.4844393238,
                "count": 3118502,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997578868,
                "variance": 0.2497579454
              },
              {
                "average": 0,
                "count": 3118502,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3118502,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3118502,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2278411237,
                "count": 3118502,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4194396291,
                "variance": 0.1759296025
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102291.2587,
              2365121.912,
              9.941057062,
              -101795.5787,
              2365595.552,
              15.82105706
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102291.25868847068,
                    2365121.9118305235,
                    9.941057062397917
                  ],
                  [
                    -102291.25868847068,
                    2365595.551830523,
                    9.941057062397917
                  ],
                  [
                    -101795.57868847069,
                    2365595.551830523,
                    15.821057062397916
                  ],
                  [
                    -101795.57868847069,
                    2365121.9118305235,
                    15.821057062397916
                  ],
                  [
                    -102291.25868847068,
                    2365121.9118305235,
                    9.941057062397917
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:04+00:00",
            "end_time": "2018-09-08T04:46:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2175.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71784821523238,
              71.29630316957241,
              -9.85631891757055
            ],
            [
              -156.71837630130273,
              71.30065124914304,
              -9.85631891757055
            ],
            [
              -156.7048756209313,
              71.30083720573212,
              22.983681082429456
            ],
            [
              -156.70435015175764,
              71.2964890845929,
              22.983681082429456
            ],
            [
              -156.71784821523238,
              71.29630316957241,
              -9.85631891757055
            ]
          ]
        ]
      },
      "bbox": [
        -156.7183763,
        71.29630317,
        -9.856318918,
        -156.7043502,
        71.30083721,
        22.98368108
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:37Z",
        "pc:count": 3012565,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99488.77378,
            "count": 3012565,
            "maximum": -99231.41841,
            "minimum": -99727.25841,
            "name": "X",
            "position": 0,
            "stddev": 135.4428323,
            "variance": 18344.76081
          },
          {
            "average": 2368777.962,
            "count": 3012565,
            "maximum": 2369014.128,
            "minimum": 2368540.468,
            "name": "Y",
            "position": 1,
            "stddev": 128.5724829,
            "variance": 16530.88337
          },
          {
            "average": 7.639601914,
            "count": 3012565,
            "maximum": 22.98368108,
            "minimum": -9.856318918,
            "name": "Z",
            "position": 2,
            "stddev": 1.155379435,
            "variance": 1.33490164
          },
          {
            "average": 39116.04985,
            "count": 3012565,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10887.8057,
            "variance": 118544313
          },
          {
            "average": 1.004960225,
            "count": 3012565,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07120668264,
            "variance": 0.005070391653
          },
          {
            "average": 1.009924101,
            "count": 3012565,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1011430841,
            "variance": 0.01022992346
          },
          {
            "average": 0.501095578,
            "count": 3012565,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988827,
            "variance": 0.2499988827
          },
          {
            "average": 0.0004308620727,
            "count": 3012565,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02075274858,
            "variance": 0.0004306765735
          },
          {
            "average": 1.387908975,
            "count": 3012565,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.711850083,
            "variance": 0.5067305406
          },
          {
            "average": 0.7197140579,
            "count": 3012565,
            "maximum": 16.31399918,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.6279078,
            "variance": 112.9524241
          },
          {
            "average": 0.5074868094,
            "count": 3012565,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999440275,
            "variance": 0.2499440307
          },
          {
            "average": 408.8922569,
            "count": 3012565,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9554322537,
            "variance": 0.9128507913
          },
          {
            "average": 220416670,
            "count": 3012565,
            "maximum": 220417917.5,
            "minimum": 220415644.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 539.9978991,
            "variance": 291597.7311
          },
          {
            "average": 0.5074868094,
            "count": 3012565,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999440275,
            "variance": 0.2499440307
          },
          {
            "average": 0,
            "count": 3012565,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3012565,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3012565,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2460487989,
            "count": 3012565,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4307073822,
            "variance": 0.1855088491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99727.25841,
          2368540.468,
          -9.856318918,
          -99231.41841,
          2369014.128,
          22.98368108
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99727.25840730968,
                2368540.468076669,
                -9.85631891757055
              ],
              [
                -99727.25840730968,
                2369014.1280766693,
                -9.85631891757055
              ],
              [
                -99231.41840730968,
                2369014.1280766693,
                22.983681082429456
              ],
              [
                -99231.41840730968,
                2368540.468076669,
                22.983681082429456
              ],
              [
                -99727.25840730968,
                2368540.468076669,
                -9.85631891757055
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:37+00:00",
        "end_time": "2018-09-08T04:20:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2175.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2175.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2175.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2175.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7183763,
            71.29630317,
            -9.856318918,
            -156.7043502,
            71.30083721,
            22.98368108
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71784821523238,
                  71.29630316957241,
                  -9.85631891757055
                ],
                [
                  -156.71837630130273,
                  71.30065124914304,
                  -9.85631891757055
                ],
                [
                  -156.7048756209313,
                  71.30083720573212,
                  22.983681082429456
                ],
                [
                  -156.70435015175764,
                  71.2964890845929,
                  22.983681082429456
                ],
                [
                  -156.71784821523238,
                  71.29630316957241,
                  -9.85631891757055
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2175.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2175.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:37Z",
            "pc:count": 3012565,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99488.77378,
                "count": 3012565,
                "maximum": -99231.41841,
                "minimum": -99727.25841,
                "name": "X",
                "position": 0,
                "stddev": 135.4428323,
                "variance": 18344.76081
              },
              {
                "average": 2368777.962,
                "count": 3012565,
                "maximum": 2369014.128,
                "minimum": 2368540.468,
                "name": "Y",
                "position": 1,
                "stddev": 128.5724829,
                "variance": 16530.88337
              },
              {
                "average": 7.639601914,
                "count": 3012565,
                "maximum": 22.98368108,
                "minimum": -9.856318918,
                "name": "Z",
                "position": 2,
                "stddev": 1.155379435,
                "variance": 1.33490164
              },
              {
                "average": 39116.04985,
                "count": 3012565,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10887.8057,
                "variance": 118544313
              },
              {
                "average": 1.004960225,
                "count": 3012565,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07120668264,
                "variance": 0.005070391653
              },
              {
                "average": 1.009924101,
                "count": 3012565,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1011430841,
                "variance": 0.01022992346
              },
              {
                "average": 0.501095578,
                "count": 3012565,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988827,
                "variance": 0.2499988827
              },
              {
                "average": 0.0004308620727,
                "count": 3012565,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02075274858,
                "variance": 0.0004306765735
              },
              {
                "average": 1.387908975,
                "count": 3012565,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.711850083,
                "variance": 0.5067305406
              },
              {
                "average": 0.7197140579,
                "count": 3012565,
                "maximum": 16.31399918,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.6279078,
                "variance": 112.9524241
              },
              {
                "average": 0.5074868094,
                "count": 3012565,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999440275,
                "variance": 0.2499440307
              },
              {
                "average": 408.8922569,
                "count": 3012565,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9554322537,
                "variance": 0.9128507913
              },
              {
                "average": 220416670,
                "count": 3012565,
                "maximum": 220417917.5,
                "minimum": 220415644.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 539.9978991,
                "variance": 291597.7311
              },
              {
                "average": 0.5074868094,
                "count": 3012565,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999440275,
                "variance": 0.2499440307
              },
              {
                "average": 0,
                "count": 3012565,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3012565,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3012565,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2460487989,
                "count": 3012565,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4307073822,
                "variance": 0.1855088491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99727.25841,
              2368540.468,
              -9.856318918,
              -99231.41841,
              2369014.128,
              22.98368108
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99727.25840730968,
                    2368540.468076669,
                    -9.85631891757055
                  ],
                  [
                    -99727.25840730968,
                    2369014.1280766693,
                    -9.85631891757055
                  ],
                  [
                    -99231.41840730968,
                    2369014.1280766693,
                    22.983681082429456
                  ],
                  [
                    -99231.41840730968,
                    2368540.468076669,
                    22.983681082429456
                  ],
                  [
                    -99727.25840730968,
                    2368540.468076669,
                    -9.85631891757055
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:37+00:00",
            "end_time": "2018-09-08T04:20:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1775.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8606986341505,
              71.25623513177462,
              1.44108695936949
            ],
            [
              -156.8612535135654,
              71.26058201254459,
              1.44108695936949
            ],
            [
              -156.84779012429337,
              71.26077753621541,
              13.681086959369491
            ],
            [
              -156.84723784939936,
              71.25643061185119,
              13.681086959369491
            ],
            [
              -156.8606986341505,
              71.25623513177462,
              1.44108695936949
            ]
          ]
        ]
      },
      "bbox": [
        -156.8612535,
        71.25623513,
        1.441086959,
        -156.8472378,
        71.26077754,
        13.68108696
      ],
      "properties": {
        "datetime": "2018-09-08T04:45:51Z",
        "pc:count": 3136287,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104906.5226,
            "count": 3136287,
            "maximum": -104658.2038,
            "minimum": -105153.6038,
            "name": "X",
            "position": 0,
            "stddev": 134.703247,
            "variance": 18144.96475
          },
          {
            "average": 2364638.729,
            "count": 3136287,
            "maximum": 2364876.535,
            "minimum": 2364402.835,
            "name": "Y",
            "position": 1,
            "stddev": 130.5115997,
            "variance": 17033.27765
          },
          {
            "average": 10.09920875,
            "count": 3136287,
            "maximum": 13.68108696,
            "minimum": 1.441086959,
            "name": "Z",
            "position": 2,
            "stddev": 1.110764766,
            "variance": 1.233798366
          },
          {
            "average": 42811.8254,
            "count": 3136287,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10444.50947,
            "variance": 109087778
          },
          {
            "average": 1.000054204,
            "count": 3136287,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007362153367,
            "variance": 5.42013022e-05
          },
          {
            "average": 1.000108727,
            "count": 3136287,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01042667288,
            "variance": 0.0001087155074
          },
          {
            "average": 0.5042210742,
            "count": 3136287,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999822619,
            "variance": 0.2499822622
          },
          {
            "average": 0.000324268793,
            "count": 3136287,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01800454793,
            "variance": 0.0003241637461
          },
          {
            "average": 1.288020516,
            "count": 3136287,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4567081126,
            "variance": 0.2085823001
          },
          {
            "average": 0.3723835243,
            "count": 3136287,
            "maximum": 16.40399933,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.34134149,
            "variance": 106.9433439
          },
          {
            "average": 0.5278286075,
            "count": 3136287,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992250475,
            "variance": 0.2492256481
          },
          {
            "average": 408.484631,
            "count": 3136287,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9513866212,
            "variance": 0.9051365031
          },
          {
            "average": 220416463.1,
            "count": 3136287,
            "maximum": 220417151.2,
            "minimum": 220415757.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 542.0571131,
            "variance": 293825.9138
          },
          {
            "average": 0.5278286075,
            "count": 3136287,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992250475,
            "variance": 0.2492256481
          },
          {
            "average": 0,
            "count": 3136287,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136287,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136287,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2269208781,
            "count": 3136287,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4188410786,
            "variance": 0.1754278491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105153.6038,
          2364402.835,
          1.441086959,
          -104658.2038,
          2364876.535,
          13.68108696
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105153.60375315971,
                2364402.834751084,
                1.44108695936949
              ],
              [
                -105153.60375315971,
                2364876.534751084,
                1.44108695936949
              ],
              [
                -104658.20375315972,
                2364876.534751084,
                13.681086959369491
              ],
              [
                -104658.20375315972,
                2364402.834751084,
                13.681086959369491
              ],
              [
                -105153.60375315971,
                2364402.834751084,
                1.44108695936949
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:45:51+00:00",
        "end_time": "2018-09-08T04:22:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1775.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1775.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1775.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1775.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8612535,
            71.25623513,
            1.441086959,
            -156.8472378,
            71.26077754,
            13.68108696
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8606986341505,
                  71.25623513177462,
                  1.44108695936949
                ],
                [
                  -156.8612535135654,
                  71.26058201254459,
                  1.44108695936949
                ],
                [
                  -156.84779012429337,
                  71.26077753621541,
                  13.681086959369491
                ],
                [
                  -156.84723784939936,
                  71.25643061185119,
                  13.681086959369491
                ],
                [
                  -156.8606986341505,
                  71.25623513177462,
                  1.44108695936949
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1775.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1775.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:45:51Z",
            "pc:count": 3136287,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104906.5226,
                "count": 3136287,
                "maximum": -104658.2038,
                "minimum": -105153.6038,
                "name": "X",
                "position": 0,
                "stddev": 134.703247,
                "variance": 18144.96475
              },
              {
                "average": 2364638.729,
                "count": 3136287,
                "maximum": 2364876.535,
                "minimum": 2364402.835,
                "name": "Y",
                "position": 1,
                "stddev": 130.5115997,
                "variance": 17033.27765
              },
              {
                "average": 10.09920875,
                "count": 3136287,
                "maximum": 13.68108696,
                "minimum": 1.441086959,
                "name": "Z",
                "position": 2,
                "stddev": 1.110764766,
                "variance": 1.233798366
              },
              {
                "average": 42811.8254,
                "count": 3136287,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10444.50947,
                "variance": 109087778
              },
              {
                "average": 1.000054204,
                "count": 3136287,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007362153367,
                "variance": 5.42013022e-05
              },
              {
                "average": 1.000108727,
                "count": 3136287,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01042667288,
                "variance": 0.0001087155074
              },
              {
                "average": 0.5042210742,
                "count": 3136287,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999822619,
                "variance": 0.2499822622
              },
              {
                "average": 0.000324268793,
                "count": 3136287,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01800454793,
                "variance": 0.0003241637461
              },
              {
                "average": 1.288020516,
                "count": 3136287,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4567081126,
                "variance": 0.2085823001
              },
              {
                "average": 0.3723835243,
                "count": 3136287,
                "maximum": 16.40399933,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.34134149,
                "variance": 106.9433439
              },
              {
                "average": 0.5278286075,
                "count": 3136287,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992250475,
                "variance": 0.2492256481
              },
              {
                "average": 408.484631,
                "count": 3136287,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9513866212,
                "variance": 0.9051365031
              },
              {
                "average": 220416463.1,
                "count": 3136287,
                "maximum": 220417151.2,
                "minimum": 220415757.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 542.0571131,
                "variance": 293825.9138
              },
              {
                "average": 0.5278286075,
                "count": 3136287,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992250475,
                "variance": 0.2492256481
              },
              {
                "average": 0,
                "count": 3136287,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136287,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136287,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2269208781,
                "count": 3136287,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4188410786,
                "variance": 0.1754278491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105153.6038,
              2364402.835,
              1.441086959,
              -104658.2038,
              2364876.535,
              13.68108696
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105153.60375315971,
                    2364402.834751084,
                    1.44108695936949
                  ],
                  [
                    -105153.60375315971,
                    2364876.534751084,
                    1.44108695936949
                  ],
                  [
                    -104658.20375315972,
                    2364876.534751084,
                    13.681086959369491
                  ],
                  [
                    -104658.20375315972,
                    2364402.834751084,
                    13.681086959369491
                  ],
                  [
                    -105153.60375315971,
                    2364402.834751084,
                    1.44108695936949
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:45:51+00:00",
            "end_time": "2018-09-08T04:22:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2155.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62877208554985,
              71.29157679769469,
              2.392630923602159
            ],
            [
              -156.62928276525722,
              71.29592497337424,
              2.392630923602159
            ],
            [
              -156.61577876355022,
              71.2961048900587,
              6.032630923602159
            ],
            [
              -156.61527070125476,
              71.29175667417083,
              6.032630923602159
            ],
            [
              -156.62877208554985,
              71.29157679769469,
              2.392630923602159
            ]
          ]
        ]
      },
      "bbox": [
        -156.6292828,
        71.2915768,
        2.392630924,
        -156.6152707,
        71.29610489,
        6.032630924
      ],
      "properties": {
        "datetime": "2018-09-11T17:49:07Z",
        "pc:count": 3738901,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96224.81116,
            "count": 3738901,
            "maximum": -95984.80159,
            "minimum": -96480.84159,
            "name": "X",
            "position": 0,
            "stddev": 136.4498708,
            "variance": 18618.56723
          },
          {
            "average": 2368119.311,
            "count": 3738901,
            "maximum": 2368368.505,
            "minimum": 2367894.845,
            "name": "Y",
            "position": 1,
            "stddev": 127.1096717,
            "variance": 16156.86863
          },
          {
            "average": 3.164008716,
            "count": 3738901,
            "maximum": 6.032630924,
            "minimum": 2.392630924,
            "name": "Z",
            "position": 2,
            "stddev": 0.8641634294,
            "variance": 0.7467784327
          },
          {
            "average": 34034.38702,
            "count": 3738901,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11812.03008,
            "variance": 139524054.6
          },
          {
            "average": 1,
            "count": 3738901,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3738901,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5059451962,
            "count": 3738901,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999647203,
            "variance": 0.2499647215
          },
          {
            "average": 0.0005081707165,
            "count": 3738901,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02253691671,
            "variance": 0.0005079126148
          },
          {
            "average": 1.410086814,
            "count": 3738901,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.038039316,
            "variance": 1.077525622
          },
          {
            "average": -3.229226183,
            "count": 3738901,
            "maximum": 16.39800072,
            "minimum": -19.46999931,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.67744288,
            "variance": 114.0077864
          },
          {
            "average": 0.4917739197,
            "count": 3738901,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999323939,
            "variance": 0.2499323984
          },
          {
            "average": 425.6311603,
            "count": 3738901,
            "maximum": 457,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.26792274,
            "variance": 298.1811556
          },
          {
            "average": 220492982,
            "count": 3738901,
            "maximum": 220723347.3,
            "minimum": 220419485,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129095.1436,
            "variance": 16665556100.0
          },
          {
            "average": 0.4917739197,
            "count": 3738901,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999323939,
            "variance": 0.2499323984
          },
          {
            "average": 0,
            "count": 3738901,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3738901,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3738901,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2013934041,
            "count": 3738901,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4010413244,
            "variance": 0.1608341439
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96480.84159,
          2367894.845,
          2.392630924,
          -95984.80159,
          2368368.505,
          6.032630924
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96480.84158925913,
                2367894.8452039743,
                2.392630923602159
              ],
              [
                -96480.84158925913,
                2368368.5052039744,
                2.392630923602159
              ],
              [
                -95984.80158925912,
                2368368.5052039744,
                6.032630923602159
              ],
              [
                -95984.80158925912,
                2367894.8452039743,
                6.032630923602159
              ],
              [
                -96480.84158925913,
                2367894.8452039743,
                2.392630923602159
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:49:07+00:00",
        "end_time": "2018-09-08T05:24:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2155.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2155.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2155.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2155.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6292828,
            71.2915768,
            2.392630924,
            -156.6152707,
            71.29610489,
            6.032630924
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62877208554985,
                  71.29157679769469,
                  2.392630923602159
                ],
                [
                  -156.62928276525722,
                  71.29592497337424,
                  2.392630923602159
                ],
                [
                  -156.61577876355022,
                  71.2961048900587,
                  6.032630923602159
                ],
                [
                  -156.61527070125476,
                  71.29175667417083,
                  6.032630923602159
                ],
                [
                  -156.62877208554985,
                  71.29157679769469,
                  2.392630923602159
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2155.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2155.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:49:07Z",
            "pc:count": 3738901,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96224.81116,
                "count": 3738901,
                "maximum": -95984.80159,
                "minimum": -96480.84159,
                "name": "X",
                "position": 0,
                "stddev": 136.4498708,
                "variance": 18618.56723
              },
              {
                "average": 2368119.311,
                "count": 3738901,
                "maximum": 2368368.505,
                "minimum": 2367894.845,
                "name": "Y",
                "position": 1,
                "stddev": 127.1096717,
                "variance": 16156.86863
              },
              {
                "average": 3.164008716,
                "count": 3738901,
                "maximum": 6.032630924,
                "minimum": 2.392630924,
                "name": "Z",
                "position": 2,
                "stddev": 0.8641634294,
                "variance": 0.7467784327
              },
              {
                "average": 34034.38702,
                "count": 3738901,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11812.03008,
                "variance": 139524054.6
              },
              {
                "average": 1,
                "count": 3738901,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3738901,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5059451962,
                "count": 3738901,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999647203,
                "variance": 0.2499647215
              },
              {
                "average": 0.0005081707165,
                "count": 3738901,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02253691671,
                "variance": 0.0005079126148
              },
              {
                "average": 1.410086814,
                "count": 3738901,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.038039316,
                "variance": 1.077525622
              },
              {
                "average": -3.229226183,
                "count": 3738901,
                "maximum": 16.39800072,
                "minimum": -19.46999931,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.67744288,
                "variance": 114.0077864
              },
              {
                "average": 0.4917739197,
                "count": 3738901,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999323939,
                "variance": 0.2499323984
              },
              {
                "average": 425.6311603,
                "count": 3738901,
                "maximum": 457,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.26792274,
                "variance": 298.1811556
              },
              {
                "average": 220492982,
                "count": 3738901,
                "maximum": 220723347.3,
                "minimum": 220419485,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129095.1436,
                "variance": 16665556100.0
              },
              {
                "average": 0.4917739197,
                "count": 3738901,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999323939,
                "variance": 0.2499323984
              },
              {
                "average": 0,
                "count": 3738901,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3738901,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3738901,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2013934041,
                "count": 3738901,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4010413244,
                "variance": 0.1608341439
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96480.84159,
              2367894.845,
              2.392630924,
              -95984.80159,
              2368368.505,
              6.032630924
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96480.84158925913,
                    2367894.8452039743,
                    2.392630923602159
                  ],
                  [
                    -96480.84158925913,
                    2368368.5052039744,
                    2.392630923602159
                  ],
                  [
                    -95984.80158925912,
                    2368368.5052039744,
                    6.032630923602159
                  ],
                  [
                    -95984.80158925912,
                    2367894.8452039743,
                    6.032630923602159
                  ],
                  [
                    -96480.84158925913,
                    2367894.8452039743,
                    2.392630923602159
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:49:07+00:00",
            "end_time": "2018-09-08T05:24:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1786.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72054942378256,
              71.25533343193744,
              9.692377022875121
            ],
            [
              -156.7210772247688,
              71.25968158994334,
              9.692377022875121
            ],
            [
              -156.70760394614004,
              71.25986764370349,
              11.452377022875122
            ],
            [
              -156.70707875272674,
              71.25551944420474,
              11.452377022875122
            ],
            [
              -156.72054942378256,
              71.25533343193744,
              9.692377022875121
            ]
          ]
        ]
      },
      "bbox": [
        -156.7210772,
        71.25533343,
        9.692377023,
        -156.7070788,
        71.25986764,
        11.45237702
      ],
      "properties": {
        "datetime": "2018-09-11T18:23:56Z",
        "pc:count": 3896249,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99755.10246,
            "count": 3896249,
            "maximum": -99513.23387,
            "minimum": -100008.9739,
            "name": "X",
            "position": 0,
            "stddev": 136.1330158,
            "variance": 18532.19798
          },
          {
            "average": 2364332.763,
            "count": 3896249,
            "maximum": 2364562.068,
            "minimum": 2364088.268,
            "name": "Y",
            "position": 1,
            "stddev": 127.1766356,
            "variance": 16173.89665
          },
          {
            "average": 10.49093773,
            "count": 3896249,
            "maximum": 11.45237702,
            "minimum": 9.692377023,
            "name": "Z",
            "position": 2,
            "stddev": 0.2887494019,
            "variance": 0.08337621711
          },
          {
            "average": 38944.12647,
            "count": 3896249,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11509.57253,
            "variance": 132470259.7
          },
          {
            "average": 1,
            "count": 3896249,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3896249,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5057502742,
            "count": 3896249,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999669974,
            "variance": 0.2499669985
          },
          {
            "average": 0.0004704524788,
            "count": 3896249,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02168481667,
            "variance": 0.0004702312739
          },
          {
            "average": 1.250890023,
            "count": 3896249,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4336230671,
            "variance": 0.1880289643
          },
          {
            "average": -2.672700572,
            "count": 3896249,
            "maximum": 16.55999947,
            "minimum": -19.66200066,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73089094,
            "variance": 115.1520204
          },
          {
            "average": 0.4898390734,
            "count": 3896249,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998968091,
            "variance": 0.2498968197
          },
          {
            "average": 428.5361665,
            "count": 3896249,
            "maximum": 463,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.01623907,
            "variance": 361.6173483
          },
          {
            "average": 220493708.8,
            "count": 3896249,
            "maximum": 220725436.5,
            "minimum": 220420493,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129124.7759,
            "variance": 16673207740.0
          },
          {
            "average": 0.4898390734,
            "count": 3896249,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998968091,
            "variance": 0.2498968197
          },
          {
            "average": 0,
            "count": 3896249,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3896249,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3896249,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2098164157,
            "count": 3896249,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4071775165,
            "variance": 0.16579353
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100008.9739,
          2364088.268,
          9.692377023,
          -99513.23387,
          2364562.068,
          11.45237702
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100008.97387044108,
                2364088.267927961,
                9.692377022875121
              ],
              [
                -100008.97387044108,
                2364562.067927961,
                9.692377022875121
              ],
              [
                -99513.2338704411,
                2364562.067927961,
                11.452377022875122
              ],
              [
                -99513.2338704411,
                2364088.267927961,
                11.452377022875122
              ],
              [
                -100008.97387044108,
                2364088.267927961,
                9.692377022875121
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:23:56+00:00",
        "end_time": "2018-09-08T05:41:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1786.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1786.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1786.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1786.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7210772,
            71.25533343,
            9.692377023,
            -156.7070788,
            71.25986764,
            11.45237702
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72054942378256,
                  71.25533343193744,
                  9.692377022875121
                ],
                [
                  -156.7210772247688,
                  71.25968158994334,
                  9.692377022875121
                ],
                [
                  -156.70760394614004,
                  71.25986764370349,
                  11.452377022875122
                ],
                [
                  -156.70707875272674,
                  71.25551944420474,
                  11.452377022875122
                ],
                [
                  -156.72054942378256,
                  71.25533343193744,
                  9.692377022875121
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1786.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1786.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:23:56Z",
            "pc:count": 3896249,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99755.10246,
                "count": 3896249,
                "maximum": -99513.23387,
                "minimum": -100008.9739,
                "name": "X",
                "position": 0,
                "stddev": 136.1330158,
                "variance": 18532.19798
              },
              {
                "average": 2364332.763,
                "count": 3896249,
                "maximum": 2364562.068,
                "minimum": 2364088.268,
                "name": "Y",
                "position": 1,
                "stddev": 127.1766356,
                "variance": 16173.89665
              },
              {
                "average": 10.49093773,
                "count": 3896249,
                "maximum": 11.45237702,
                "minimum": 9.692377023,
                "name": "Z",
                "position": 2,
                "stddev": 0.2887494019,
                "variance": 0.08337621711
              },
              {
                "average": 38944.12647,
                "count": 3896249,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11509.57253,
                "variance": 132470259.7
              },
              {
                "average": 1,
                "count": 3896249,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3896249,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5057502742,
                "count": 3896249,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999669974,
                "variance": 0.2499669985
              },
              {
                "average": 0.0004704524788,
                "count": 3896249,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02168481667,
                "variance": 0.0004702312739
              },
              {
                "average": 1.250890023,
                "count": 3896249,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4336230671,
                "variance": 0.1880289643
              },
              {
                "average": -2.672700572,
                "count": 3896249,
                "maximum": 16.55999947,
                "minimum": -19.66200066,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73089094,
                "variance": 115.1520204
              },
              {
                "average": 0.4898390734,
                "count": 3896249,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998968091,
                "variance": 0.2498968197
              },
              {
                "average": 428.5361665,
                "count": 3896249,
                "maximum": 463,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.01623907,
                "variance": 361.6173483
              },
              {
                "average": 220493708.8,
                "count": 3896249,
                "maximum": 220725436.5,
                "minimum": 220420493,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129124.7759,
                "variance": 16673207740.0
              },
              {
                "average": 0.4898390734,
                "count": 3896249,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998968091,
                "variance": 0.2498968197
              },
              {
                "average": 0,
                "count": 3896249,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3896249,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3896249,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2098164157,
                "count": 3896249,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4071775165,
                "variance": 0.16579353
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100008.9739,
              2364088.268,
              9.692377023,
              -99513.23387,
              2364562.068,
              11.45237702
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100008.97387044108,
                    2364088.267927961,
                    9.692377022875121
                  ],
                  [
                    -100008.97387044108,
                    2364562.067927961,
                    9.692377022875121
                  ],
                  [
                    -99513.2338704411,
                    2364562.067927961,
                    11.452377022875122
                  ],
                  [
                    -99513.2338704411,
                    2364088.267927961,
                    11.452377022875122
                  ],
                  [
                    -100008.97387044108,
                    2364088.267927961,
                    9.692377022875121
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:23:56+00:00",
            "end_time": "2018-09-08T05:41:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1979.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75772371837232,
              71.27197822208662,
              4.505323636723318
            ],
            [
              -156.7582590116065,
              71.276325847963,
              4.505323636723318
            ],
            [
              -156.74477712408066,
              71.27651445447287,
              61.22532363672332
            ],
            [
              -156.7442444412914,
              71.27216678649913,
              61.22532363672332
            ],
            [
              -156.75772371837232,
              71.27197822208662,
              4.505323636723318
            ]
          ]
        ]
      },
      "bbox": [
        -156.758259,
        71.27197822,
        4.505323637,
        -156.7442444,
        71.27651445,
        61.22532364
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:26Z",
        "pc:count": 3148778,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101047.5373,
            "count": 3148778,
            "maximum": -100803.8157,
            "minimum": -101299.5157,
            "name": "X",
            "position": 0,
            "stddev": 135.5949876,
            "variance": 18386.00067
          },
          {
            "average": 2366189.277,
            "count": 3148778,
            "maximum": 2366428.883,
            "minimum": 2365955.183,
            "name": "Y",
            "position": 1,
            "stddev": 129.5884127,
            "variance": 16793.15671
          },
          {
            "average": 9.259360641,
            "count": 3148778,
            "maximum": 61.22532364,
            "minimum": 4.505323637,
            "name": "Z",
            "position": 2,
            "stddev": 1.227597539,
            "variance": 1.506995717
          },
          {
            "average": 46298.95642,
            "count": 3148778,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8288.246366,
            "variance": 68695027.83
          },
          {
            "average": 1.000087653,
            "count": 3148778,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.009361911996,
            "variance": 8.764539622e-05
          },
          {
            "average": 1.000176576,
            "count": 3148778,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01328703555,
            "variance": 0.0001765453138
          },
          {
            "average": 0.498889728,
            "count": 3148778,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988467,
            "variance": 0.2499988467
          },
          {
            "average": 0.0004335015044,
            "count": 3148778,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02081618886,
            "variance": 0.0004333137185
          },
          {
            "average": 1.328596046,
            "count": 3148778,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4715928944,
            "variance": 0.222399858
          },
          {
            "average": -0.0007712056288,
            "count": 3148778,
            "maximum": 16.38599968,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.30158969,
            "variance": 106.1227502
          },
          {
            "average": 0.473148631,
            "count": 3148778,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992785627,
            "variance": 0.2492790831
          },
          {
            "average": 411.7487047,
            "count": 3148778,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9290003746,
            "variance": 0.863041696
          },
          {
            "average": 220418299.2,
            "count": 3148778,
            "maximum": 220419406,
            "minimum": 220417206.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 530.591154,
            "variance": 281526.9727
          },
          {
            "average": 0.473148631,
            "count": 3148778,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992785627,
            "variance": 0.2492790831
          },
          {
            "average": 0,
            "count": 3148778,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3148778,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3148778,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2232869386,
            "count": 3148778,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4164492007,
            "variance": 0.1734299367
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101299.5157,
          2365955.183,
          4.505323637,
          -100803.8157,
          2366428.883,
          61.22532364
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101299.51569075638,
                2365955.1833363674,
                4.505323636723318
              ],
              [
                -101299.51569075638,
                2366428.8833363676,
                4.505323636723318
              ],
              [
                -100803.81569075637,
                2366428.8833363676,
                61.22532363672332
              ],
              [
                -100803.81569075637,
                2365955.1833363674,
                61.22532363672332
              ],
              [
                -101299.51569075638,
                2365955.1833363674,
                4.505323636723318
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:26+00:00",
        "end_time": "2018-09-08T04:46:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1979.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1979.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1979.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1979.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.758259,
            71.27197822,
            4.505323637,
            -156.7442444,
            71.27651445,
            61.22532364
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75772371837232,
                  71.27197822208662,
                  4.505323636723318
                ],
                [
                  -156.7582590116065,
                  71.276325847963,
                  4.505323636723318
                ],
                [
                  -156.74477712408066,
                  71.27651445447287,
                  61.22532363672332
                ],
                [
                  -156.7442444412914,
                  71.27216678649913,
                  61.22532363672332
                ],
                [
                  -156.75772371837232,
                  71.27197822208662,
                  4.505323636723318
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1979.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1979.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:26Z",
            "pc:count": 3148778,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101047.5373,
                "count": 3148778,
                "maximum": -100803.8157,
                "minimum": -101299.5157,
                "name": "X",
                "position": 0,
                "stddev": 135.5949876,
                "variance": 18386.00067
              },
              {
                "average": 2366189.277,
                "count": 3148778,
                "maximum": 2366428.883,
                "minimum": 2365955.183,
                "name": "Y",
                "position": 1,
                "stddev": 129.5884127,
                "variance": 16793.15671
              },
              {
                "average": 9.259360641,
                "count": 3148778,
                "maximum": 61.22532364,
                "minimum": 4.505323637,
                "name": "Z",
                "position": 2,
                "stddev": 1.227597539,
                "variance": 1.506995717
              },
              {
                "average": 46298.95642,
                "count": 3148778,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8288.246366,
                "variance": 68695027.83
              },
              {
                "average": 1.000087653,
                "count": 3148778,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.009361911996,
                "variance": 8.764539622e-05
              },
              {
                "average": 1.000176576,
                "count": 3148778,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01328703555,
                "variance": 0.0001765453138
              },
              {
                "average": 0.498889728,
                "count": 3148778,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988467,
                "variance": 0.2499988467
              },
              {
                "average": 0.0004335015044,
                "count": 3148778,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02081618886,
                "variance": 0.0004333137185
              },
              {
                "average": 1.328596046,
                "count": 3148778,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4715928944,
                "variance": 0.222399858
              },
              {
                "average": -0.0007712056288,
                "count": 3148778,
                "maximum": 16.38599968,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.30158969,
                "variance": 106.1227502
              },
              {
                "average": 0.473148631,
                "count": 3148778,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992785627,
                "variance": 0.2492790831
              },
              {
                "average": 411.7487047,
                "count": 3148778,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9290003746,
                "variance": 0.863041696
              },
              {
                "average": 220418299.2,
                "count": 3148778,
                "maximum": 220419406,
                "minimum": 220417206.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 530.591154,
                "variance": 281526.9727
              },
              {
                "average": 0.473148631,
                "count": 3148778,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992785627,
                "variance": 0.2492790831
              },
              {
                "average": 0,
                "count": 3148778,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3148778,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3148778,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2232869386,
                "count": 3148778,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4164492007,
                "variance": 0.1734299367
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101299.5157,
              2365955.183,
              4.505323637,
              -100803.8157,
              2366428.883,
              61.22532364
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101299.51569075638,
                    2365955.1833363674,
                    4.505323636723318
                  ],
                  [
                    -101299.51569075638,
                    2366428.8833363676,
                    4.505323636723318
                  ],
                  [
                    -100803.81569075637,
                    2366428.8833363676,
                    61.22532363672332
                  ],
                  [
                    -100803.81569075637,
                    2365955.1833363674,
                    61.22532363672332
                  ],
                  [
                    -101299.51569075638,
                    2365955.1833363674,
                    4.505323636723318
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:26+00:00",
            "end_time": "2018-09-08T04:46:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2114.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7566773946474,
              71.28836662699807,
              -9.095317478474383
            ],
            [
              -156.75721274078657,
              71.29271363433084,
              -9.095317478474383
            ],
            [
              -156.74371989067004,
              71.29290220483128,
              28.764682521525614
            ],
            [
              -156.74318715835275,
              71.28855515537533,
              28.764682521525614
            ],
            [
              -156.7566773946474,
              71.28836662699807,
              -9.095317478474383
            ]
          ]
        ]
      },
      "bbox": [
        -156.7572127,
        71.28836663,
        -9.095317478,
        -156.7431872,
        71.2929022,
        28.76468252
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:15Z",
        "pc:count": 2820639,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100953.0092,
            "count": 2820639,
            "maximum": -100691.3316,
            "minimum": -101187.0716,
            "name": "X",
            "position": 0,
            "stddev": 127.869568,
            "variance": 16350.62641
          },
          {
            "average": 2367960.69,
            "count": 2820639,
            "maximum": 2368209.634,
            "minimum": 2367736.054,
            "name": "Y",
            "position": 1,
            "stddev": 121.8865247,
            "variance": 14856.32491
          },
          {
            "average": 7.810576576,
            "count": 2820639,
            "maximum": 28.76468252,
            "minimum": -9.095317478,
            "name": "Z",
            "position": 2,
            "stddev": 3.186115999,
            "variance": 10.15133516
          },
          {
            "average": 35942.61476,
            "count": 2820639,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14786.53881,
            "variance": 218641729.9
          },
          {
            "average": 1.022239641,
            "count": 2820639,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1518143264,
            "variance": 0.02304758969
          },
          {
            "average": 1.0445119,
            "count": 2820639,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2154953179,
            "variance": 0.04643823205
          },
          {
            "average": 0.5033302737,
            "count": 2820639,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999889978,
            "variance": 0.2499889979
          },
          {
            "average": 0.0003843100801,
            "count": 2820639,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01960006434,
            "variance": 0.0003841625221
          },
          {
            "average": 2.194120907,
            "count": 2820639,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.134681183,
            "variance": 4.556863755
          },
          {
            "average": -0.008619861232,
            "count": 2820639,
            "maximum": 16.33200073,
            "minimum": -15.98400021,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.01456283,
            "variance": 100.2914688
          },
          {
            "average": 0.5011570073,
            "count": 2820639,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49999875,
            "variance": 0.24999875
          },
          {
            "average": 408.1238397,
            "count": 2820639,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8483818003,
            "variance": 0.7197516791
          },
          {
            "average": 220416259.8,
            "count": 2820639,
            "maximum": 220417235.5,
            "minimum": 220414973.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 489.1507296,
            "variance": 239268.4363
          },
          {
            "average": 0.5011570073,
            "count": 2820639,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49999875,
            "variance": 0.24999875
          },
          {
            "average": 0,
            "count": 2820639,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2820639,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2820639,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2133669002,
            "count": 2820639,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4096846661,
            "variance": 0.1678415256
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101187.0716,
          2367736.054,
          -9.095317478,
          -100691.3316,
          2368209.634,
          28.76468252
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101187.0716466773,
                2367736.0543530122,
                -9.095317478474383
              ],
              [
                -101187.0716466773,
                2368209.6343530123,
                -9.095317478474383
              ],
              [
                -100691.33164667731,
                2368209.6343530123,
                28.764682521525614
              ],
              [
                -100691.33164667731,
                2367736.0543530122,
                28.764682521525614
              ],
              [
                -101187.0716466773,
                2367736.0543530122,
                -9.095317478474383
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:15+00:00",
        "end_time": "2018-09-08T04:09:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2114.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2114.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2114.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2114.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7572127,
            71.28836663,
            -9.095317478,
            -156.7431872,
            71.2929022,
            28.76468252
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7566773946474,
                  71.28836662699807,
                  -9.095317478474383
                ],
                [
                  -156.75721274078657,
                  71.29271363433084,
                  -9.095317478474383
                ],
                [
                  -156.74371989067004,
                  71.29290220483128,
                  28.764682521525614
                ],
                [
                  -156.74318715835275,
                  71.28855515537533,
                  28.764682521525614
                ],
                [
                  -156.7566773946474,
                  71.28836662699807,
                  -9.095317478474383
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2114.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2114.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:15Z",
            "pc:count": 2820639,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100953.0092,
                "count": 2820639,
                "maximum": -100691.3316,
                "minimum": -101187.0716,
                "name": "X",
                "position": 0,
                "stddev": 127.869568,
                "variance": 16350.62641
              },
              {
                "average": 2367960.69,
                "count": 2820639,
                "maximum": 2368209.634,
                "minimum": 2367736.054,
                "name": "Y",
                "position": 1,
                "stddev": 121.8865247,
                "variance": 14856.32491
              },
              {
                "average": 7.810576576,
                "count": 2820639,
                "maximum": 28.76468252,
                "minimum": -9.095317478,
                "name": "Z",
                "position": 2,
                "stddev": 3.186115999,
                "variance": 10.15133516
              },
              {
                "average": 35942.61476,
                "count": 2820639,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14786.53881,
                "variance": 218641729.9
              },
              {
                "average": 1.022239641,
                "count": 2820639,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1518143264,
                "variance": 0.02304758969
              },
              {
                "average": 1.0445119,
                "count": 2820639,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2154953179,
                "variance": 0.04643823205
              },
              {
                "average": 0.5033302737,
                "count": 2820639,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999889978,
                "variance": 0.2499889979
              },
              {
                "average": 0.0003843100801,
                "count": 2820639,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01960006434,
                "variance": 0.0003841625221
              },
              {
                "average": 2.194120907,
                "count": 2820639,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.134681183,
                "variance": 4.556863755
              },
              {
                "average": -0.008619861232,
                "count": 2820639,
                "maximum": 16.33200073,
                "minimum": -15.98400021,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.01456283,
                "variance": 100.2914688
              },
              {
                "average": 0.5011570073,
                "count": 2820639,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49999875,
                "variance": 0.24999875
              },
              {
                "average": 408.1238397,
                "count": 2820639,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8483818003,
                "variance": 0.7197516791
              },
              {
                "average": 220416259.8,
                "count": 2820639,
                "maximum": 220417235.5,
                "minimum": 220414973.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 489.1507296,
                "variance": 239268.4363
              },
              {
                "average": 0.5011570073,
                "count": 2820639,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49999875,
                "variance": 0.24999875
              },
              {
                "average": 0,
                "count": 2820639,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2820639,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2820639,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2133669002,
                "count": 2820639,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4096846661,
                "variance": 0.1678415256
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101187.0716,
              2367736.054,
              -9.095317478,
              -100691.3316,
              2368209.634,
              28.76468252
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101187.0716466773,
                    2367736.0543530122,
                    -9.095317478474383
                  ],
                  [
                    -101187.0716466773,
                    2368209.6343530123,
                    -9.095317478474383
                  ],
                  [
                    -100691.33164667731,
                    2368209.6343530123,
                    28.764682521525614
                  ],
                  [
                    -100691.33164667731,
                    2367736.0543530122,
                    28.764682521525614
                  ],
                  [
                    -101187.0716466773,
                    2367736.0543530122,
                    -9.095317478474383
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:15+00:00",
            "end_time": "2018-09-08T04:09:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2020.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68094040300136,
              71.27555356788358,
              5.749529799110965
            ],
            [
              -156.68146090529584,
              71.2799016879412,
              5.749529799110965
            ],
            [
              -156.66797242202026,
              71.28008508907708,
              9.529529799110966
            ],
            [
              -156.6674545323457,
              71.27573692807084,
              9.529529799110966
            ],
            [
              -156.68094040300136,
              71.27555356788358,
              5.749529799110965
            ]
          ]
        ]
      },
      "bbox": [
        -156.6814609,
        71.27555357,
        5.749529799,
        -156.6674545,
        71.28008509,
        9.529529799
      ],
      "properties": {
        "datetime": "2018-09-11T18:00:58Z",
        "pc:count": 4253096,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98216.18829,
            "count": 4253096,
            "maximum": -97969.03889,
            "minimum": -98464.87889,
            "name": "X",
            "position": 0,
            "stddev": 132.5737925,
            "variance": 17575.81045
          },
          {
            "average": 2366454.182,
            "count": 4253096,
            "maximum": 2366702.316,
            "minimum": 2366228.596,
            "name": "Y",
            "position": 1,
            "stddev": 126.9226421,
            "variance": 16109.35709
          },
          {
            "average": 6.657362973,
            "count": 4253096,
            "maximum": 9.529529799,
            "minimum": 5.749529799,
            "name": "Z",
            "position": 2,
            "stddev": 0.9054051685,
            "variance": 0.8197585191
          },
          {
            "average": 39305.58634,
            "count": 4253096,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12004.70273,
            "variance": 144112887.6
          },
          {
            "average": 1,
            "count": 4253096,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4253096,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4985295418,
            "count": 4253096,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999978965,
            "variance": 0.2499978965
          },
          {
            "average": 0.0004131108256,
            "count": 4253096,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02032093163,
            "variance": 0.0004129402622
          },
          {
            "average": 1.261126248,
            "count": 4253096,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4395878885,
            "variance": 0.1932375117
          },
          {
            "average": 1.897065351,
            "count": 4253096,
            "maximum": 20.64599991,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4610441,
            "variance": 109.4334437
          },
          {
            "average": 0.502050036,
            "count": 4253096,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999958561,
            "variance": 0.2499958561
          },
          {
            "average": 423.941702,
            "count": 4253096,
            "maximum": 460,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.80124611,
            "variance": 282.281871
          },
          {
            "average": 220476131.4,
            "count": 4253096,
            "maximum": 220724058.6,
            "minimum": 220419440.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 117321.4837,
            "variance": 13764330540.0
          },
          {
            "average": 0.502050036,
            "count": 4253096,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999958561,
            "variance": 0.2499958561
          },
          {
            "average": 0,
            "count": 4253096,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4253096,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4253096,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2176207638,
            "count": 4253096,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4126281704,
            "variance": 0.170262007
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98464.87889,
          2366228.596,
          5.749529799,
          -97969.03889,
          2366702.316,
          9.529529799
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98464.87888832563,
                2366228.595637865,
                5.749529799110965
              ],
              [
                -98464.87888832563,
                2366702.3156378646,
                5.749529799110965
              ],
              [
                -97969.03888832564,
                2366702.3156378646,
                9.529529799110966
              ],
              [
                -97969.03888832564,
                2366228.595637865,
                9.529529799110966
              ],
              [
                -98464.87888832563,
                2366228.595637865,
                5.749529799110965
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:00:58+00:00",
        "end_time": "2018-09-08T05:24:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2020.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2020.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2020.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2020.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6814609,
            71.27555357,
            5.749529799,
            -156.6674545,
            71.28008509,
            9.529529799
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68094040300136,
                  71.27555356788358,
                  5.749529799110965
                ],
                [
                  -156.68146090529584,
                  71.2799016879412,
                  5.749529799110965
                ],
                [
                  -156.66797242202026,
                  71.28008508907708,
                  9.529529799110966
                ],
                [
                  -156.6674545323457,
                  71.27573692807084,
                  9.529529799110966
                ],
                [
                  -156.68094040300136,
                  71.27555356788358,
                  5.749529799110965
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2020.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2020.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:00:58Z",
            "pc:count": 4253096,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98216.18829,
                "count": 4253096,
                "maximum": -97969.03889,
                "minimum": -98464.87889,
                "name": "X",
                "position": 0,
                "stddev": 132.5737925,
                "variance": 17575.81045
              },
              {
                "average": 2366454.182,
                "count": 4253096,
                "maximum": 2366702.316,
                "minimum": 2366228.596,
                "name": "Y",
                "position": 1,
                "stddev": 126.9226421,
                "variance": 16109.35709
              },
              {
                "average": 6.657362973,
                "count": 4253096,
                "maximum": 9.529529799,
                "minimum": 5.749529799,
                "name": "Z",
                "position": 2,
                "stddev": 0.9054051685,
                "variance": 0.8197585191
              },
              {
                "average": 39305.58634,
                "count": 4253096,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12004.70273,
                "variance": 144112887.6
              },
              {
                "average": 1,
                "count": 4253096,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4253096,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4985295418,
                "count": 4253096,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999978965,
                "variance": 0.2499978965
              },
              {
                "average": 0.0004131108256,
                "count": 4253096,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02032093163,
                "variance": 0.0004129402622
              },
              {
                "average": 1.261126248,
                "count": 4253096,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4395878885,
                "variance": 0.1932375117
              },
              {
                "average": 1.897065351,
                "count": 4253096,
                "maximum": 20.64599991,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4610441,
                "variance": 109.4334437
              },
              {
                "average": 0.502050036,
                "count": 4253096,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999958561,
                "variance": 0.2499958561
              },
              {
                "average": 423.941702,
                "count": 4253096,
                "maximum": 460,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.80124611,
                "variance": 282.281871
              },
              {
                "average": 220476131.4,
                "count": 4253096,
                "maximum": 220724058.6,
                "minimum": 220419440.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 117321.4837,
                "variance": 13764330540.0
              },
              {
                "average": 0.502050036,
                "count": 4253096,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999958561,
                "variance": 0.2499958561
              },
              {
                "average": 0,
                "count": 4253096,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4253096,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4253096,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2176207638,
                "count": 4253096,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4126281704,
                "variance": 0.170262007
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98464.87889,
              2366228.596,
              5.749529799,
              -97969.03889,
              2366702.316,
              9.529529799
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98464.87888832563,
                    2366228.595637865,
                    5.749529799110965
                  ],
                  [
                    -98464.87888832563,
                    2366702.3156378646,
                    5.749529799110965
                  ],
                  [
                    -97969.03888832564,
                    2366702.3156378646,
                    9.529529799110966
                  ],
                  [
                    -97969.03888832564,
                    2366228.595637865,
                    9.529529799110966
                  ],
                  [
                    -98464.87888832563,
                    2366228.595637865,
                    5.749529799110965
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:00:58+00:00",
            "end_time": "2018-09-08T05:24:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1885.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.77099494112844,
              71.2638670199555,
              12.358691576730095
            ],
            [
              -156.77153270511982,
              71.26821510679284,
              12.358691576730095
            ],
            [
              -156.75805635057057,
              71.26840460484851,
              15.438691576730093
            ],
            [
              -156.75752119538427,
              71.26405647573004,
              15.438691576730093
            ],
            [
              -156.77099494112844,
              71.2638670199555,
              12.358691576730095
            ]
          ]
        ]
      },
      "bbox": [
        -156.7715327,
        71.26386702,
        12.35869158,
        -156.7575212,
        71.2684046,
        15.43869158
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:15Z",
        "pc:count": 3250761,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101569.3602,
            "count": 3250761,
            "maximum": -101327.8795,
            "minimum": -101823.5595,
            "name": "X",
            "position": 0,
            "stddev": 135.822407,
            "variance": 18447.72625
          },
          {
            "average": 2365335.865,
            "count": 3250761,
            "maximum": 2365566.984,
            "minimum": 2365093.204,
            "name": "Y",
            "position": 1,
            "stddev": 127.4297315,
            "variance": 16238.33647
          },
          {
            "average": 13.83897882,
            "count": 3250761,
            "maximum": 15.43869158,
            "minimum": 12.35869158,
            "name": "Z",
            "position": 2,
            "stddev": 0.5734215431,
            "variance": 0.328812266
          },
          {
            "average": 45114.79836,
            "count": 3250761,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8880.216941,
            "variance": 78858252.92
          },
          {
            "average": 1,
            "count": 3250761,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3250761,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5023383755,
            "count": 3250761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999946089,
            "variance": 0.2499946089
          },
          {
            "average": 0.0004042130443,
            "count": 3250761,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02010098954,
            "variance": 0.0004040497804
          },
          {
            "average": 1.296441664,
            "count": 3250761,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4567332801,
            "variance": 0.2086052891
          },
          {
            "average": 1.297289873,
            "count": 3250761,
            "maximum": 16.37999916,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.57308258,
            "variance": 111.7900753
          },
          {
            "average": 0.5328284669,
            "count": 3250761,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989212045,
            "variance": 0.2489223683
          },
          {
            "average": 412.7410425,
            "count": 3250761,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9639968035,
            "variance": 0.9292898371
          },
          {
            "average": 220418809.4,
            "count": 3250761,
            "maximum": 220419395.6,
            "minimum": 220417976,
            "name": "GpsTime",
            "position": 12,
            "stddev": 511.5227558,
            "variance": 261655.5297
          },
          {
            "average": 0.5328284669,
            "count": 3250761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989212045,
            "variance": 0.2489223683
          },
          {
            "average": 0,
            "count": 3250761,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3250761,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3250761,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2668076798,
            "count": 3250761,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4422910829,
            "variance": 0.195621402
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101823.5595,
          2365093.204,
          12.35869158,
          -101327.8795,
          2365566.984,
          15.43869158
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101823.55954085942,
                2365093.204448082,
                12.358691576730095
              ],
              [
                -101823.55954085942,
                2365566.9844480823,
                12.358691576730095
              ],
              [
                -101327.87954085943,
                2365566.9844480823,
                15.438691576730093
              ],
              [
                -101327.87954085943,
                2365093.204448082,
                15.438691576730093
              ],
              [
                -101823.55954085942,
                2365093.204448082,
                12.358691576730095
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:15+00:00",
        "end_time": "2018-09-08T04:59:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1885.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1885.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1885.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1885.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7715327,
            71.26386702,
            12.35869158,
            -156.7575212,
            71.2684046,
            15.43869158
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.77099494112844,
                  71.2638670199555,
                  12.358691576730095
                ],
                [
                  -156.77153270511982,
                  71.26821510679284,
                  12.358691576730095
                ],
                [
                  -156.75805635057057,
                  71.26840460484851,
                  15.438691576730093
                ],
                [
                  -156.75752119538427,
                  71.26405647573004,
                  15.438691576730093
                ],
                [
                  -156.77099494112844,
                  71.2638670199555,
                  12.358691576730095
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1885.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1885.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:15Z",
            "pc:count": 3250761,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101569.3602,
                "count": 3250761,
                "maximum": -101327.8795,
                "minimum": -101823.5595,
                "name": "X",
                "position": 0,
                "stddev": 135.822407,
                "variance": 18447.72625
              },
              {
                "average": 2365335.865,
                "count": 3250761,
                "maximum": 2365566.984,
                "minimum": 2365093.204,
                "name": "Y",
                "position": 1,
                "stddev": 127.4297315,
                "variance": 16238.33647
              },
              {
                "average": 13.83897882,
                "count": 3250761,
                "maximum": 15.43869158,
                "minimum": 12.35869158,
                "name": "Z",
                "position": 2,
                "stddev": 0.5734215431,
                "variance": 0.328812266
              },
              {
                "average": 45114.79836,
                "count": 3250761,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8880.216941,
                "variance": 78858252.92
              },
              {
                "average": 1,
                "count": 3250761,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3250761,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5023383755,
                "count": 3250761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999946089,
                "variance": 0.2499946089
              },
              {
                "average": 0.0004042130443,
                "count": 3250761,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02010098954,
                "variance": 0.0004040497804
              },
              {
                "average": 1.296441664,
                "count": 3250761,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4567332801,
                "variance": 0.2086052891
              },
              {
                "average": 1.297289873,
                "count": 3250761,
                "maximum": 16.37999916,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.57308258,
                "variance": 111.7900753
              },
              {
                "average": 0.5328284669,
                "count": 3250761,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989212045,
                "variance": 0.2489223683
              },
              {
                "average": 412.7410425,
                "count": 3250761,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9639968035,
                "variance": 0.9292898371
              },
              {
                "average": 220418809.4,
                "count": 3250761,
                "maximum": 220419395.6,
                "minimum": 220417976,
                "name": "GpsTime",
                "position": 12,
                "stddev": 511.5227558,
                "variance": 261655.5297
              },
              {
                "average": 0.5328284669,
                "count": 3250761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989212045,
                "variance": 0.2489223683
              },
              {
                "average": 0,
                "count": 3250761,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3250761,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3250761,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2668076798,
                "count": 3250761,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4422910829,
                "variance": 0.195621402
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101823.5595,
              2365093.204,
              12.35869158,
              -101327.8795,
              2365566.984,
              15.43869158
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101823.55954085942,
                    2365093.204448082,
                    12.358691576730095
                  ],
                  [
                    -101823.55954085942,
                    2365566.9844480823,
                    12.358691576730095
                  ],
                  [
                    -101327.87954085943,
                    2365566.9844480823,
                    15.438691576730093
                  ],
                  [
                    -101327.87954085943,
                    2365093.204448082,
                    15.438691576730093
                  ],
                  [
                    -101823.55954085942,
                    2365093.204448082,
                    12.358691576730095
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:15+00:00",
            "end_time": "2018-09-08T04:59:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1825.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.877908767745,
              71.26060346674993,
              0.925424816686523
            ],
            [
              -156.87821047406013,
              71.26295266298825,
              0.925424816686523
            ],
            [
              -156.87310893226783,
              71.2630272935106,
              1.505424816686523
            ],
            [
              -156.8728077593819,
              71.26067808827744,
              1.505424816686523
            ],
            [
              -156.877908767745,
              71.26060346674993,
              0.925424816686523
            ]
          ]
        ]
      },
      "bbox": [
        -156.8782105,
        71.26060347,
        0.9254248167,
        -156.8728078,
        71.26302729,
        1.505424817
      ],
      "properties": {
        "datetime": "2018-09-08T04:26:47Z",
        "pc:count": 189651,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -105647.262,
            "count": 189651,
            "maximum": -105577.5158,
            "minimum": -105765.2158,
            "name": "X",
            "position": 0,
            "stddev": 42.80827407,
            "variance": 1832.548329
          },
          {
            "average": 2364990.011,
            "count": 189651,
            "maximum": 2365161.317,
            "minimum": 2364905.317,
            "name": "Y",
            "position": 1,
            "stddev": 58.51766965,
            "variance": 3424.317661
          },
          {
            "average": 1.187981197,
            "count": 189651,
            "maximum": 1.505424817,
            "minimum": 0.9254248167,
            "name": "Z",
            "position": 2,
            "stddev": 0.07149275048,
            "variance": 0.005111213372
          },
          {
            "average": 14778.11869,
            "count": 189651,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10605.95879,
            "variance": 112486361.8
          },
          {
            "average": 1,
            "count": 189651,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 189651,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5152675177,
            "count": 189651,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4997681661,
            "variance": 0.2497682199
          },
          {
            "average": 0.0005852856036,
            "count": 189651,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02418565957,
            "variance": 0.0005849461286
          },
          {
            "average": 7.808759247,
            "count": 189651,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.247997485,
            "variance": 5.053492693
          },
          {
            "average": -5.12727975,
            "count": 189651,
            "maximum": 16.44599915,
            "minimum": -10.30200005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 4.087872968,
            "variance": 16.71070541
          },
          {
            "average": 0.4972976678,
            "count": 189651,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999940155,
            "variance": 0.2499940156
          },
          {
            "average": 406.4638204,
            "count": 189651,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5577274119,
            "variance": 0.311059866
          },
          {
            "average": 220415300.5,
            "count": 189651,
            "maximum": 220416007.7,
            "minimum": 220414638.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 453.2010847,
            "variance": 205391.2232
          },
          {
            "average": 0.4972976678,
            "count": 189651,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999940155,
            "variance": 0.2499940156
          },
          {
            "average": 0,
            "count": 189651,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 189651,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 189651,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03118359513,
            "count": 189651,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1738140898,
            "variance": 0.03021133782
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -105765.2158,
          2364905.317,
          0.9254248167,
          -105577.5158,
          2365161.317,
          1.505424817
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -105765.21583453758,
                2364905.3165395474,
                0.925424816686523
              ],
              [
                -105765.21583453758,
                2365161.3165395474,
                0.925424816686523
              ],
              [
                -105577.51583453757,
                2365161.3165395474,
                1.505424816686523
              ],
              [
                -105577.51583453757,
                2364905.3165395474,
                1.505424816686523
              ],
              [
                -105765.21583453758,
                2364905.3165395474,
                0.925424816686523
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:26:47+00:00",
        "end_time": "2018-09-08T04:03:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1825.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1825.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1825.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1825.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8782105,
            71.26060347,
            0.9254248167,
            -156.8728078,
            71.26302729,
            1.505424817
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.877908767745,
                  71.26060346674993,
                  0.925424816686523
                ],
                [
                  -156.87821047406013,
                  71.26295266298825,
                  0.925424816686523
                ],
                [
                  -156.87310893226783,
                  71.2630272935106,
                  1.505424816686523
                ],
                [
                  -156.8728077593819,
                  71.26067808827744,
                  1.505424816686523
                ],
                [
                  -156.877908767745,
                  71.26060346674993,
                  0.925424816686523
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1825.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1825.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:26:47Z",
            "pc:count": 189651,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -105647.262,
                "count": 189651,
                "maximum": -105577.5158,
                "minimum": -105765.2158,
                "name": "X",
                "position": 0,
                "stddev": 42.80827407,
                "variance": 1832.548329
              },
              {
                "average": 2364990.011,
                "count": 189651,
                "maximum": 2365161.317,
                "minimum": 2364905.317,
                "name": "Y",
                "position": 1,
                "stddev": 58.51766965,
                "variance": 3424.317661
              },
              {
                "average": 1.187981197,
                "count": 189651,
                "maximum": 1.505424817,
                "minimum": 0.9254248167,
                "name": "Z",
                "position": 2,
                "stddev": 0.07149275048,
                "variance": 0.005111213372
              },
              {
                "average": 14778.11869,
                "count": 189651,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10605.95879,
                "variance": 112486361.8
              },
              {
                "average": 1,
                "count": 189651,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 189651,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5152675177,
                "count": 189651,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4997681661,
                "variance": 0.2497682199
              },
              {
                "average": 0.0005852856036,
                "count": 189651,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02418565957,
                "variance": 0.0005849461286
              },
              {
                "average": 7.808759247,
                "count": 189651,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.247997485,
                "variance": 5.053492693
              },
              {
                "average": -5.12727975,
                "count": 189651,
                "maximum": 16.44599915,
                "minimum": -10.30200005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 4.087872968,
                "variance": 16.71070541
              },
              {
                "average": 0.4972976678,
                "count": 189651,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999940155,
                "variance": 0.2499940156
              },
              {
                "average": 406.4638204,
                "count": 189651,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5577274119,
                "variance": 0.311059866
              },
              {
                "average": 220415300.5,
                "count": 189651,
                "maximum": 220416007.7,
                "minimum": 220414638.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 453.2010847,
                "variance": 205391.2232
              },
              {
                "average": 0.4972976678,
                "count": 189651,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999940155,
                "variance": 0.2499940156
              },
              {
                "average": 0,
                "count": 189651,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 189651,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 189651,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03118359513,
                "count": 189651,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1738140898,
                "variance": 0.03021133782
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -105765.2158,
              2364905.317,
              0.9254248167,
              -105577.5158,
              2365161.317,
              1.505424817
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -105765.21583453758,
                    2364905.3165395474,
                    0.925424816686523
                  ],
                  [
                    -105765.21583453758,
                    2365161.3165395474,
                    0.925424816686523
                  ],
                  [
                    -105577.51583453757,
                    2365161.3165395474,
                    1.505424816686523
                  ],
                  [
                    -105577.51583453757,
                    2364905.3165395474,
                    1.505424816686523
                  ],
                  [
                    -105765.21583453758,
                    2364905.3165395474,
                    0.925424816686523
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:26:47+00:00",
            "end_time": "2018-09-08T04:03:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2151.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67982742628882,
              71.29194238302921,
              -10.420688706153832
            ],
            [
              -156.68034791751873,
              71.29628951775986,
              -10.420688706153832
            ],
            [
              -156.6668473759986,
              71.2964728920552,
              16.49931129384617
            ],
            [
              -156.6663295007592,
              71.29212571635249,
              16.49931129384617
            ],
            [
              -156.67982742628882,
              71.29194238302921,
              -10.420688706153832
            ]
          ]
        ]
      },
      "bbox": [
        -156.6803479,
        71.29194238,
        -10.42068871,
        -156.6663295,
        71.29647289,
        16.49931129
      ],
      "properties": {
        "datetime": "2018-09-08T05:24:30Z",
        "pc:count": 3191306,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98111.19784,
            "count": 3191306,
            "maximum": -97856.13509,
            "minimum": -98352.05509,
            "name": "X",
            "position": 0,
            "stddev": 134.4738544,
            "variance": 18083.21752
          },
          {
            "average": 2368248.157,
            "count": 3191306,
            "maximum": 2368483.059,
            "minimum": 2368009.499,
            "name": "Y",
            "position": 1,
            "stddev": 128.7074223,
            "variance": 16565.60054
          },
          {
            "average": 5.58005979,
            "count": 3191306,
            "maximum": 16.49931129,
            "minimum": -10.42068871,
            "name": "Z",
            "position": 2,
            "stddev": 0.5836618111,
            "variance": 0.3406611098
          },
          {
            "average": 39538.92567,
            "count": 3191306,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10210.10731,
            "variance": 104246291.4
          },
          {
            "average": 1.001632247,
            "count": 3191306,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04066199823,
            "variance": 0.0016533981
          },
          {
            "average": 1.003263241,
            "count": 3191306,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05765446403,
            "variance": 0.003324037223
          },
          {
            "average": 0.502575748,
            "count": 3191306,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999934438,
            "variance": 0.2499934439
          },
          {
            "average": 0.0004264711689,
            "count": 3191306,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02064677759,
            "variance": 0.0004262894248
          },
          {
            "average": 1.299947106,
            "count": 3191306,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5240092597,
            "variance": 0.2745857043
          },
          {
            "average": 1.363964277,
            "count": 3191306,
            "maximum": 16.41600037,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62777259,
            "variance": 112.9495503
          },
          {
            "average": 0.5411715454,
            "count": 3191306,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4983020988,
            "variance": 0.2483049817
          },
          {
            "average": 412.3235409,
            "count": 3191306,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9851648231,
            "variance": 0.9705497287
          },
          {
            "average": 220418600.3,
            "count": 3191306,
            "maximum": 220419470.2,
            "minimum": 220417897.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 530.6751732,
            "variance": 281616.1395
          },
          {
            "average": 0.5411715454,
            "count": 3191306,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4983020988,
            "variance": 0.2483049817
          },
          {
            "average": 0,
            "count": 3191306,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191306,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191306,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2674738806,
            "count": 3191306,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4426416894,
            "variance": 0.1959316652
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98352.05509,
          2368009.499,
          -10.42068871,
          -97856.13509,
          2368483.059,
          16.49931129
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98352.05509464255,
                2368009.4986848063,
                -10.420688706153832
              ],
              [
                -98352.05509464255,
                2368483.058684806,
                -10.420688706153832
              ],
              [
                -97856.13509464254,
                2368483.058684806,
                16.49931129384617
              ],
              [
                -97856.13509464254,
                2368009.4986848063,
                16.49931129384617
              ],
              [
                -98352.05509464255,
                2368009.4986848063,
                -10.420688706153832
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:24:30+00:00",
        "end_time": "2018-09-08T04:58:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2151.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2151.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2151.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2151.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6803479,
            71.29194238,
            -10.42068871,
            -156.6663295,
            71.29647289,
            16.49931129
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67982742628882,
                  71.29194238302921,
                  -10.420688706153832
                ],
                [
                  -156.68034791751873,
                  71.29628951775986,
                  -10.420688706153832
                ],
                [
                  -156.6668473759986,
                  71.2964728920552,
                  16.49931129384617
                ],
                [
                  -156.6663295007592,
                  71.29212571635249,
                  16.49931129384617
                ],
                [
                  -156.67982742628882,
                  71.29194238302921,
                  -10.420688706153832
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2151.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2151.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:24:30Z",
            "pc:count": 3191306,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98111.19784,
                "count": 3191306,
                "maximum": -97856.13509,
                "minimum": -98352.05509,
                "name": "X",
                "position": 0,
                "stddev": 134.4738544,
                "variance": 18083.21752
              },
              {
                "average": 2368248.157,
                "count": 3191306,
                "maximum": 2368483.059,
                "minimum": 2368009.499,
                "name": "Y",
                "position": 1,
                "stddev": 128.7074223,
                "variance": 16565.60054
              },
              {
                "average": 5.58005979,
                "count": 3191306,
                "maximum": 16.49931129,
                "minimum": -10.42068871,
                "name": "Z",
                "position": 2,
                "stddev": 0.5836618111,
                "variance": 0.3406611098
              },
              {
                "average": 39538.92567,
                "count": 3191306,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10210.10731,
                "variance": 104246291.4
              },
              {
                "average": 1.001632247,
                "count": 3191306,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04066199823,
                "variance": 0.0016533981
              },
              {
                "average": 1.003263241,
                "count": 3191306,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05765446403,
                "variance": 0.003324037223
              },
              {
                "average": 0.502575748,
                "count": 3191306,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999934438,
                "variance": 0.2499934439
              },
              {
                "average": 0.0004264711689,
                "count": 3191306,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02064677759,
                "variance": 0.0004262894248
              },
              {
                "average": 1.299947106,
                "count": 3191306,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5240092597,
                "variance": 0.2745857043
              },
              {
                "average": 1.363964277,
                "count": 3191306,
                "maximum": 16.41600037,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62777259,
                "variance": 112.9495503
              },
              {
                "average": 0.5411715454,
                "count": 3191306,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4983020988,
                "variance": 0.2483049817
              },
              {
                "average": 412.3235409,
                "count": 3191306,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9851648231,
                "variance": 0.9705497287
              },
              {
                "average": 220418600.3,
                "count": 3191306,
                "maximum": 220419470.2,
                "minimum": 220417897.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 530.6751732,
                "variance": 281616.1395
              },
              {
                "average": 0.5411715454,
                "count": 3191306,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4983020988,
                "variance": 0.2483049817
              },
              {
                "average": 0,
                "count": 3191306,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191306,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191306,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2674738806,
                "count": 3191306,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4426416894,
                "variance": 0.1959316652
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98352.05509,
              2368009.499,
              -10.42068871,
              -97856.13509,
              2368483.059,
              16.49931129
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98352.05509464255,
                    2368009.4986848063,
                    -10.420688706153832
                  ],
                  [
                    -98352.05509464255,
                    2368483.058684806,
                    -10.420688706153832
                  ],
                  [
                    -97856.13509464254,
                    2368483.058684806,
                    16.49931129384617
                  ],
                  [
                    -97856.13509464254,
                    2368009.4986848063,
                    16.49931129384617
                  ],
                  [
                    -98352.05509464255,
                    2368009.4986848063,
                    -10.420688706153832
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:24:30+00:00",
            "end_time": "2018-09-08T04:58:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1725.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82272451228107,
              71.25190182581571,
              9.566192805180592
            ],
            [
              -156.82327206337527,
              71.25624978791967,
              9.566192805180592
            ],
            [
              -156.80980442514257,
              71.25644279928635,
              96.78619280518059
            ],
            [
              -156.8092594797391,
              71.25209479414832,
              96.78619280518059
            ],
            [
              -156.82272451228107,
              71.25190182581571,
              9.566192805180592
            ]
          ]
        ]
      },
      "bbox": [
        -156.8232721,
        71.25190183,
        9.566192805,
        -156.8092595,
        71.2564428,
        96.78619281
      ],
      "properties": {
        "datetime": "2018-09-08T05:22:33Z",
        "pc:count": 3006747,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103534.681,
            "count": 3006747,
            "maximum": -103283.0039,
            "minimum": -103778.6439,
            "name": "X",
            "position": 0,
            "stddev": 136.1402557,
            "variance": 18534.16923
          },
          {
            "average": 2364097.75,
            "count": 3006747,
            "maximum": 2364345.556,
            "minimum": 2363871.736,
            "name": "Y",
            "position": 1,
            "stddev": 129.9715944,
            "variance": 16892.61536
          },
          {
            "average": 10.72474096,
            "count": 3006747,
            "maximum": 96.78619281,
            "minimum": 9.566192805,
            "name": "Z",
            "position": 2,
            "stddev": 0.2575946283,
            "variance": 0.06635499251
          },
          {
            "average": 38929.097,
            "count": 3006747,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11675.05555,
            "variance": 136306922
          },
          {
            "average": 1.000000333,
            "count": 3006747,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005767021319,
            "variance": 3.325853489e-07
          },
          {
            "average": 1.000000665,
            "count": 3006747,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008155798407,
            "variance": 6.651704765e-07
          },
          {
            "average": 0.5016770616,
            "count": 3006747,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999972706,
            "variance": 0.2499972706
          },
          {
            "average": 0.0004040911989,
            "count": 3006747,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02009796118,
            "variance": 0.0004039280435
          },
          {
            "average": 1.305920984,
            "count": 3006747,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4611428066,
            "variance": 0.2126526881
          },
          {
            "average": -0.3325625381,
            "count": 3006747,
            "maximum": 16.37999916,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.290638,
            "variance": 105.8972305
          },
          {
            "average": 0.492302811,
            "count": 3006747,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999408329,
            "variance": 0.2499408364
          },
          {
            "average": 411.9980348,
            "count": 3006747,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.908496829,
            "variance": 0.8253664883
          },
          {
            "average": 220418443.6,
            "count": 3006747,
            "maximum": 220419353.5,
            "minimum": 220417153.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 528.7150895,
            "variance": 279539.6458
          },
          {
            "average": 0.492302811,
            "count": 3006747,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999408329,
            "variance": 0.2499408364
          },
          {
            "average": 0,
            "count": 3006747,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3006747,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3006747,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2267892842,
            "count": 3006747,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4187552544,
            "variance": 0.1753559631
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103778.6439,
          2363871.736,
          9.566192805,
          -103283.0039,
          2364345.556,
          96.78619281
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103778.6438530819,
                2363871.7361180615,
                9.566192805180592
              ],
              [
                -103778.6438530819,
                2364345.5561180618,
                9.566192805180592
              ],
              [
                -103283.00385308189,
                2364345.5561180618,
                96.78619280518059
              ],
              [
                -103283.00385308189,
                2363871.7361180615,
                96.78619280518059
              ],
              [
                -103778.6438530819,
                2363871.7361180615,
                9.566192805180592
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:22:33+00:00",
        "end_time": "2018-09-08T04:45:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1725.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1725.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1725.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1725.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8232721,
            71.25190183,
            9.566192805,
            -156.8092595,
            71.2564428,
            96.78619281
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82272451228107,
                  71.25190182581571,
                  9.566192805180592
                ],
                [
                  -156.82327206337527,
                  71.25624978791967,
                  9.566192805180592
                ],
                [
                  -156.80980442514257,
                  71.25644279928635,
                  96.78619280518059
                ],
                [
                  -156.8092594797391,
                  71.25209479414832,
                  96.78619280518059
                ],
                [
                  -156.82272451228107,
                  71.25190182581571,
                  9.566192805180592
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1725.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1725.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:22:33Z",
            "pc:count": 3006747,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103534.681,
                "count": 3006747,
                "maximum": -103283.0039,
                "minimum": -103778.6439,
                "name": "X",
                "position": 0,
                "stddev": 136.1402557,
                "variance": 18534.16923
              },
              {
                "average": 2364097.75,
                "count": 3006747,
                "maximum": 2364345.556,
                "minimum": 2363871.736,
                "name": "Y",
                "position": 1,
                "stddev": 129.9715944,
                "variance": 16892.61536
              },
              {
                "average": 10.72474096,
                "count": 3006747,
                "maximum": 96.78619281,
                "minimum": 9.566192805,
                "name": "Z",
                "position": 2,
                "stddev": 0.2575946283,
                "variance": 0.06635499251
              },
              {
                "average": 38929.097,
                "count": 3006747,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11675.05555,
                "variance": 136306922
              },
              {
                "average": 1.000000333,
                "count": 3006747,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005767021319,
                "variance": 3.325853489e-07
              },
              {
                "average": 1.000000665,
                "count": 3006747,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008155798407,
                "variance": 6.651704765e-07
              },
              {
                "average": 0.5016770616,
                "count": 3006747,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999972706,
                "variance": 0.2499972706
              },
              {
                "average": 0.0004040911989,
                "count": 3006747,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02009796118,
                "variance": 0.0004039280435
              },
              {
                "average": 1.305920984,
                "count": 3006747,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4611428066,
                "variance": 0.2126526881
              },
              {
                "average": -0.3325625381,
                "count": 3006747,
                "maximum": 16.37999916,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.290638,
                "variance": 105.8972305
              },
              {
                "average": 0.492302811,
                "count": 3006747,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999408329,
                "variance": 0.2499408364
              },
              {
                "average": 411.9980348,
                "count": 3006747,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.908496829,
                "variance": 0.8253664883
              },
              {
                "average": 220418443.6,
                "count": 3006747,
                "maximum": 220419353.5,
                "minimum": 220417153.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 528.7150895,
                "variance": 279539.6458
              },
              {
                "average": 0.492302811,
                "count": 3006747,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999408329,
                "variance": 0.2499408364
              },
              {
                "average": 0,
                "count": 3006747,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3006747,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3006747,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2267892842,
                "count": 3006747,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4187552544,
                "variance": 0.1753559631
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103778.6439,
              2363871.736,
              9.566192805,
              -103283.0039,
              2364345.556,
              96.78619281
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103778.6438530819,
                    2363871.7361180615,
                    9.566192805180592
                  ],
                  [
                    -103778.6438530819,
                    2364345.5561180618,
                    9.566192805180592
                  ],
                  [
                    -103283.00385308189,
                    2364345.5561180618,
                    96.78619280518059
                  ],
                  [
                    -103283.00385308189,
                    2363871.7361180615,
                    96.78619280518059
                  ],
                  [
                    -103778.6438530819,
                    2363871.7361180615,
                    9.566192805180592
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:22:33+00:00",
            "end_time": "2018-09-08T04:45:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2115.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74391514547847,
              71.288281150365,
              3.777358928267562
            ],
            [
              -156.74444805758884,
              71.29262855698214,
              3.777358928267562
            ],
            [
              -156.73095351869213,
              71.29281627539045,
              11.397358928267563
            ],
            [
              -156.73042322100397,
              71.28846882683685,
              11.397358928267563
            ],
            [
              -156.74391514547847,
              71.288281150365,
              3.777358928267562
            ]
          ]
        ]
      },
      "bbox": [
        -156.7444481,
        71.28828115,
        3.777358928,
        -156.7304232,
        71.29281628,
        11.39735893
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:59Z",
        "pc:count": 1515920,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100458.5535,
            "count": 1515920,
            "maximum": -100223.4699,
            "minimum": -100719.2699,
            "name": "X",
            "position": 0,
            "stddev": 137.804955,
            "variance": 18990.20562
          },
          {
            "average": 2367940.68,
            "count": 1515920,
            "maximum": 2368180.978,
            "minimum": 2367707.358,
            "name": "Y",
            "position": 1,
            "stddev": 129.4566969,
            "variance": 16759.03638
          },
          {
            "average": 4.097575853,
            "count": 1515920,
            "maximum": 11.39735893,
            "minimum": 3.777358928,
            "name": "Z",
            "position": 2,
            "stddev": 0.4064278124,
            "variance": 0.1651835667
          },
          {
            "average": 27327.33688,
            "count": 1515920,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17590.30715,
            "variance": 309418905.8
          },
          {
            "average": 1.000002639,
            "count": 1515920,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001624394179,
            "variance": 2.638656449e-06
          },
          {
            "average": 1.000005277,
            "count": 1515920,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002297237248,
            "variance": 5.277298973e-06
          },
          {
            "average": 0.500705842,
            "count": 1515920,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996667,
            "variance": 0.2499996667
          },
          {
            "average": 0.0007190353053,
            "count": 1515920,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02680520038,
            "variance": 0.0007185187675
          },
          {
            "average": 7.215581297,
            "count": 1515920,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.006941568,
            "variance": 9.041697591
          },
          {
            "average": -0.2009652883,
            "count": 1515920,
            "maximum": 16.36199951,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.297985845,
            "variance": 39.6646257
          },
          {
            "average": 0.4790853079,
            "count": 1515920,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995625489,
            "variance": 0.2495627403
          },
          {
            "average": 409.0011742,
            "count": 1515920,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6160735386,
            "variance": 0.379546605
          },
          {
            "average": 220416775,
            "count": 1515920,
            "maximum": 220417939.6,
            "minimum": 220415666.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 358.7832241,
            "variance": 128725.4019
          },
          {
            "average": 0.4790853079,
            "count": 1515920,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995625489,
            "variance": 0.2495627403
          },
          {
            "average": 0,
            "count": 1515920,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1515920,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1515920,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04410457016,
            "count": 1515920,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2053275064,
            "variance": 0.04215938486
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100719.2699,
          2367707.358,
          3.777358928,
          -100223.4699,
          2368180.978,
          11.39735893
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100719.2698813247,
                2367707.357828351,
                3.777358928267562
              ],
              [
                -100719.2698813247,
                2368180.9778283513,
                3.777358928267562
              ],
              [
                -100223.46988132471,
                2368180.9778283513,
                11.397358928267563
              ],
              [
                -100223.46988132471,
                2367707.357828351,
                11.397358928267563
              ],
              [
                -100719.2698813247,
                2367707.357828351,
                3.777358928267562
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:59+00:00",
        "end_time": "2018-09-08T04:21:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2115.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2115.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2115.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2115.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7444481,
            71.28828115,
            3.777358928,
            -156.7304232,
            71.29281628,
            11.39735893
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74391514547847,
                  71.288281150365,
                  3.777358928267562
                ],
                [
                  -156.74444805758884,
                  71.29262855698214,
                  3.777358928267562
                ],
                [
                  -156.73095351869213,
                  71.29281627539045,
                  11.397358928267563
                ],
                [
                  -156.73042322100397,
                  71.28846882683685,
                  11.397358928267563
                ],
                [
                  -156.74391514547847,
                  71.288281150365,
                  3.777358928267562
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2115.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2115.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:59Z",
            "pc:count": 1515920,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100458.5535,
                "count": 1515920,
                "maximum": -100223.4699,
                "minimum": -100719.2699,
                "name": "X",
                "position": 0,
                "stddev": 137.804955,
                "variance": 18990.20562
              },
              {
                "average": 2367940.68,
                "count": 1515920,
                "maximum": 2368180.978,
                "minimum": 2367707.358,
                "name": "Y",
                "position": 1,
                "stddev": 129.4566969,
                "variance": 16759.03638
              },
              {
                "average": 4.097575853,
                "count": 1515920,
                "maximum": 11.39735893,
                "minimum": 3.777358928,
                "name": "Z",
                "position": 2,
                "stddev": 0.4064278124,
                "variance": 0.1651835667
              },
              {
                "average": 27327.33688,
                "count": 1515920,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17590.30715,
                "variance": 309418905.8
              },
              {
                "average": 1.000002639,
                "count": 1515920,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001624394179,
                "variance": 2.638656449e-06
              },
              {
                "average": 1.000005277,
                "count": 1515920,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002297237248,
                "variance": 5.277298973e-06
              },
              {
                "average": 0.500705842,
                "count": 1515920,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996667,
                "variance": 0.2499996667
              },
              {
                "average": 0.0007190353053,
                "count": 1515920,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02680520038,
                "variance": 0.0007185187675
              },
              {
                "average": 7.215581297,
                "count": 1515920,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.006941568,
                "variance": 9.041697591
              },
              {
                "average": -0.2009652883,
                "count": 1515920,
                "maximum": 16.36199951,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.297985845,
                "variance": 39.6646257
              },
              {
                "average": 0.4790853079,
                "count": 1515920,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995625489,
                "variance": 0.2495627403
              },
              {
                "average": 409.0011742,
                "count": 1515920,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6160735386,
                "variance": 0.379546605
              },
              {
                "average": 220416775,
                "count": 1515920,
                "maximum": 220417939.6,
                "minimum": 220415666.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 358.7832241,
                "variance": 128725.4019
              },
              {
                "average": 0.4790853079,
                "count": 1515920,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995625489,
                "variance": 0.2495627403
              },
              {
                "average": 0,
                "count": 1515920,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1515920,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1515920,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04410457016,
                "count": 1515920,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2053275064,
                "variance": 0.04215938486
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100719.2699,
              2367707.358,
              3.777358928,
              -100223.4699,
              2368180.978,
              11.39735893
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100719.2698813247,
                    2367707.357828351,
                    3.777358928267562
                  ],
                  [
                    -100719.2698813247,
                    2368180.9778283513,
                    3.777358928267562
                  ],
                  [
                    -100223.46988132471,
                    2368180.9778283513,
                    11.397358928267563
                  ],
                  [
                    -100223.46988132471,
                    2367707.357828351,
                    11.397358928267563
                  ],
                  [
                    -100719.2698813247,
                    2367707.357828351,
                    3.777358928267562
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:59+00:00",
            "end_time": "2018-09-08T04:21:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1976.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79598095743552,
              71.27222658090194,
              12.921726961849286
            ],
            [
              -156.7965236095625,
              71.27657355856233,
              12.921726961849286
            ],
            [
              -156.78303972069338,
              71.27676481755206,
              27.261726961849284
            ],
            [
              -156.7824996789085,
              71.27241779720796,
              27.261726961849284
            ],
            [
              -156.79598095743552,
              71.27222658090194,
              12.921726961849286
            ]
          ]
        ]
      },
      "bbox": [
        -156.7965236,
        71.27222658,
        12.92172696,
        -156.7824997,
        71.27676482,
        27.26172696
      ],
      "properties": {
        "datetime": "2018-09-08T04:59:44Z",
        "pc:count": 3201793,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102454.1244,
            "count": 3201793,
            "maximum": -102207.0769,
            "minimum": -102702.8569,
            "name": "X",
            "position": 0,
            "stddev": 136.4922342,
            "variance": 18630.13
          },
          {
            "average": 2366285.251,
            "count": 3201793,
            "maximum": 2366514.596,
            "minimum": 2366040.956,
            "name": "Y",
            "position": 1,
            "stddev": 128.5280293,
            "variance": 16519.45431
          },
          {
            "average": 15.1865574,
            "count": 3201793,
            "maximum": 27.26172696,
            "minimum": 12.92172696,
            "name": "Z",
            "position": 2,
            "stddev": 0.7669190388,
            "variance": 0.588164812
          },
          {
            "average": 43685.44069,
            "count": 3201793,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8261.401374,
            "variance": 68250752.66
          },
          {
            "average": 1.000100256,
            "count": 3201793,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01034975639,
            "variance": 0.0001071174573
          },
          {
            "average": 1.000200513,
            "count": 3201793,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01486895975,
            "variance": 0.000221085964
          },
          {
            "average": 0.5001428887,
            "count": 3201793,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000577,
            "variance": 0.2500000577
          },
          {
            "average": 0.0004519342756,
            "count": 3201793,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02125394486,
            "variance": 0.0004517301721
          },
          {
            "average": 1.291177787,
            "count": 3201793,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4640321601,
            "variance": 0.2153258456
          },
          {
            "average": -0.270161853,
            "count": 3201793,
            "maximum": 16.32600021,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.52639901,
            "variance": 110.8050761
          },
          {
            "average": 0.4820695779,
            "count": 3201793,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996784746,
            "variance": 0.2496785779
          },
          {
            "average": 409.1509773,
            "count": 3201793,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9391587503,
            "variance": 0.8820191582
          },
          {
            "average": 220416796.3,
            "count": 3201793,
            "maximum": 220417984.6,
            "minimum": 220415711.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 553.4233093,
            "variance": 306277.3593
          },
          {
            "average": 0.4820695779,
            "count": 3201793,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996784746,
            "variance": 0.2496785779
          },
          {
            "average": 0,
            "count": 3201793,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3201793,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3201793,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2332658607,
            "count": 3201793,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4229101025,
            "variance": 0.1788529548
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102702.8569,
          2366040.956,
          12.92172696,
          -102207.0769,
          2366514.596,
          27.26172696
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102702.85687441537,
                2366040.9564874223,
                12.921726961849286
              ],
              [
                -102702.85687441537,
                2366514.596487422,
                12.921726961849286
              ],
              [
                -102207.07687441538,
                2366514.596487422,
                27.261726961849284
              ],
              [
                -102207.07687441538,
                2366040.9564874223,
                27.261726961849284
              ],
              [
                -102702.85687441537,
                2366040.9564874223,
                12.921726961849286
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:59:44+00:00",
        "end_time": "2018-09-08T04:21:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1976.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1976.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1976.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1976.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7965236,
            71.27222658,
            12.92172696,
            -156.7824997,
            71.27676482,
            27.26172696
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79598095743552,
                  71.27222658090194,
                  12.921726961849286
                ],
                [
                  -156.7965236095625,
                  71.27657355856233,
                  12.921726961849286
                ],
                [
                  -156.78303972069338,
                  71.27676481755206,
                  27.261726961849284
                ],
                [
                  -156.7824996789085,
                  71.27241779720796,
                  27.261726961849284
                ],
                [
                  -156.79598095743552,
                  71.27222658090194,
                  12.921726961849286
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1976.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1976.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:59:44Z",
            "pc:count": 3201793,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102454.1244,
                "count": 3201793,
                "maximum": -102207.0769,
                "minimum": -102702.8569,
                "name": "X",
                "position": 0,
                "stddev": 136.4922342,
                "variance": 18630.13
              },
              {
                "average": 2366285.251,
                "count": 3201793,
                "maximum": 2366514.596,
                "minimum": 2366040.956,
                "name": "Y",
                "position": 1,
                "stddev": 128.5280293,
                "variance": 16519.45431
              },
              {
                "average": 15.1865574,
                "count": 3201793,
                "maximum": 27.26172696,
                "minimum": 12.92172696,
                "name": "Z",
                "position": 2,
                "stddev": 0.7669190388,
                "variance": 0.588164812
              },
              {
                "average": 43685.44069,
                "count": 3201793,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8261.401374,
                "variance": 68250752.66
              },
              {
                "average": 1.000100256,
                "count": 3201793,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01034975639,
                "variance": 0.0001071174573
              },
              {
                "average": 1.000200513,
                "count": 3201793,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01486895975,
                "variance": 0.000221085964
              },
              {
                "average": 0.5001428887,
                "count": 3201793,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000577,
                "variance": 0.2500000577
              },
              {
                "average": 0.0004519342756,
                "count": 3201793,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02125394486,
                "variance": 0.0004517301721
              },
              {
                "average": 1.291177787,
                "count": 3201793,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4640321601,
                "variance": 0.2153258456
              },
              {
                "average": -0.270161853,
                "count": 3201793,
                "maximum": 16.32600021,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.52639901,
                "variance": 110.8050761
              },
              {
                "average": 0.4820695779,
                "count": 3201793,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996784746,
                "variance": 0.2496785779
              },
              {
                "average": 409.1509773,
                "count": 3201793,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9391587503,
                "variance": 0.8820191582
              },
              {
                "average": 220416796.3,
                "count": 3201793,
                "maximum": 220417984.6,
                "minimum": 220415711.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 553.4233093,
                "variance": 306277.3593
              },
              {
                "average": 0.4820695779,
                "count": 3201793,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996784746,
                "variance": 0.2496785779
              },
              {
                "average": 0,
                "count": 3201793,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3201793,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3201793,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2332658607,
                "count": 3201793,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4229101025,
                "variance": 0.1788529548
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102702.8569,
              2366040.956,
              12.92172696,
              -102207.0769,
              2366514.596,
              27.26172696
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102702.85687441537,
                    2366040.9564874223,
                    12.921726961849286
                  ],
                  [
                    -102702.85687441537,
                    2366514.596487422,
                    12.921726961849286
                  ],
                  [
                    -102207.07687441538,
                    2366514.596487422,
                    27.261726961849284
                  ],
                  [
                    -102207.07687441538,
                    2366040.9564874223,
                    27.261726961849284
                  ],
                  [
                    -102702.85687441537,
                    2366040.9564874223,
                    12.921726961849286
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:59:44+00:00",
            "end_time": "2018-09-08T04:21:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2147.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73088493345423,
              71.29229271268956,
              1.138651162700826
            ],
            [
              -156.7314154337399,
              71.296640455821,
              1.138651162700826
            ],
            [
              -156.71792000190354,
              71.29682726353361,
              30.21865116270083
            ],
            [
              -156.71739211685528,
              71.29247947865623,
              30.21865116270083
            ],
            [
              -156.73088493345423,
              71.29229271268956,
              1.138651162700826
            ]
          ]
        ]
      },
      "bbox": [
        -156.7314154,
        71.29229271,
        1.138651163,
        -156.7173921,
        71.29682726,
        30.21865116
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:49Z",
        "pc:count": 2894247,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99975.04248,
            "count": 2894247,
            "maximum": -99727.55707,
            "minimum": -100223.2971,
            "name": "X",
            "position": 0,
            "stddev": 135.7052069,
            "variance": 18415.90317
          },
          {
            "average": 2368364.969,
            "count": 2894247,
            "maximum": 2368597.573,
            "minimum": 2368123.933,
            "name": "Y",
            "position": 1,
            "stddev": 127.2851731,
            "variance": 16201.51529
          },
          {
            "average": 7.806899906,
            "count": 2894247,
            "maximum": 30.21865116,
            "minimum": 1.138651163,
            "name": "Z",
            "position": 2,
            "stddev": 0.9882476303,
            "variance": 0.9766333788
          },
          {
            "average": 42427.82446,
            "count": 2894247,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10511.97518,
            "variance": 110501622.1
          },
          {
            "average": 1.001207568,
            "count": 2894247,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03562293594,
            "variance": 0.001268993565
          },
          {
            "average": 1.002419282,
            "count": 2894247,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05101058902,
            "variance": 0.002602080192
          },
          {
            "average": 0.5022252766,
            "count": 2894247,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951345,
            "variance": 0.2499951345
          },
          {
            "average": 0.0003710809755,
            "count": 2894247,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01925989103,
            "variance": 0.0003709434025
          },
          {
            "average": 1.332986784,
            "count": 2894247,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4958475938,
            "variance": 0.2458648363
          },
          {
            "average": -0.1877654409,
            "count": 2894247,
            "maximum": 16.4279995,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.37205888,
            "variance": 107.5796054
          },
          {
            "average": 0.4948112583,
            "count": 2894247,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999731626,
            "variance": 0.2499731633
          },
          {
            "average": 408.9185353,
            "count": 2894247,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.920705312,
            "variance": 0.8476982715
          },
          {
            "average": 220416682.6,
            "count": 2894247,
            "maximum": 220417929.4,
            "minimum": 220415655.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.9083841,
            "variance": 276579.6285
          },
          {
            "average": 0.4948112583,
            "count": 2894247,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999731626,
            "variance": 0.2499731633
          },
          {
            "average": 0,
            "count": 2894247,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2894247,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2894247,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2190483397,
            "count": 2894247,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4136015276,
            "variance": 0.1710662237
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100223.2971,
          2368123.933,
          1.138651163,
          -99727.55707,
          2368597.573,
          30.21865116
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100223.297068399,
                2368123.9334468464,
                1.138651162700826
              ],
              [
                -100223.297068399,
                2368597.573446846,
                1.138651162700826
              ],
              [
                -99727.55706839901,
                2368597.573446846,
                30.21865116270083
              ],
              [
                -99727.55706839901,
                2368123.9334468464,
                30.21865116270083
              ],
              [
                -100223.297068399,
                2368123.9334468464,
                1.138651162700826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:49+00:00",
        "end_time": "2018-09-08T04:20:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2147.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2147.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2147.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2147.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7314154,
            71.29229271,
            1.138651163,
            -156.7173921,
            71.29682726,
            30.21865116
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73088493345423,
                  71.29229271268956,
                  1.138651162700826
                ],
                [
                  -156.7314154337399,
                  71.296640455821,
                  1.138651162700826
                ],
                [
                  -156.71792000190354,
                  71.29682726353361,
                  30.21865116270083
                ],
                [
                  -156.71739211685528,
                  71.29247947865623,
                  30.21865116270083
                ],
                [
                  -156.73088493345423,
                  71.29229271268956,
                  1.138651162700826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2147.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2147.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:49Z",
            "pc:count": 2894247,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99975.04248,
                "count": 2894247,
                "maximum": -99727.55707,
                "minimum": -100223.2971,
                "name": "X",
                "position": 0,
                "stddev": 135.7052069,
                "variance": 18415.90317
              },
              {
                "average": 2368364.969,
                "count": 2894247,
                "maximum": 2368597.573,
                "minimum": 2368123.933,
                "name": "Y",
                "position": 1,
                "stddev": 127.2851731,
                "variance": 16201.51529
              },
              {
                "average": 7.806899906,
                "count": 2894247,
                "maximum": 30.21865116,
                "minimum": 1.138651163,
                "name": "Z",
                "position": 2,
                "stddev": 0.9882476303,
                "variance": 0.9766333788
              },
              {
                "average": 42427.82446,
                "count": 2894247,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10511.97518,
                "variance": 110501622.1
              },
              {
                "average": 1.001207568,
                "count": 2894247,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03562293594,
                "variance": 0.001268993565
              },
              {
                "average": 1.002419282,
                "count": 2894247,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05101058902,
                "variance": 0.002602080192
              },
              {
                "average": 0.5022252766,
                "count": 2894247,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951345,
                "variance": 0.2499951345
              },
              {
                "average": 0.0003710809755,
                "count": 2894247,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01925989103,
                "variance": 0.0003709434025
              },
              {
                "average": 1.332986784,
                "count": 2894247,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4958475938,
                "variance": 0.2458648363
              },
              {
                "average": -0.1877654409,
                "count": 2894247,
                "maximum": 16.4279995,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.37205888,
                "variance": 107.5796054
              },
              {
                "average": 0.4948112583,
                "count": 2894247,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999731626,
                "variance": 0.2499731633
              },
              {
                "average": 408.9185353,
                "count": 2894247,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.920705312,
                "variance": 0.8476982715
              },
              {
                "average": 220416682.6,
                "count": 2894247,
                "maximum": 220417929.4,
                "minimum": 220415655.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.9083841,
                "variance": 276579.6285
              },
              {
                "average": 0.4948112583,
                "count": 2894247,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999731626,
                "variance": 0.2499731633
              },
              {
                "average": 0,
                "count": 2894247,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2894247,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2894247,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2190483397,
                "count": 2894247,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4136015276,
                "variance": 0.1710662237
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100223.2971,
              2368123.933,
              1.138651163,
              -99727.55707,
              2368597.573,
              30.21865116
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100223.297068399,
                    2368123.9334468464,
                    1.138651162700826
                  ],
                  [
                    -100223.297068399,
                    2368597.573446846,
                    1.138651162700826
                  ],
                  [
                    -99727.55706839901,
                    2368597.573446846,
                    30.21865116270083
                  ],
                  [
                    -99727.55706839901,
                    2368123.9334468464,
                    30.21865116270083
                  ],
                  [
                    -100223.297068399,
                    2368123.9334468464,
                    1.138651162700826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:49+00:00",
            "end_time": "2018-09-08T04:20:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1829.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83497120603192,
              71.2601754644524,
              4.714730580753596
            ],
            [
              -156.8355212413306,
              71.26452289950682,
              4.714730580753596
            ],
            [
              -156.82204982629614,
              71.26471674476443,
              10.714730580753596
            ],
            [
              -156.82150239787893,
              71.26036926647464,
              10.714730580753596
            ],
            [
              -156.83497120603192,
              71.2601754644524,
              4.714730580753596
            ]
          ]
        ]
      },
      "bbox": [
        -156.8355212,
        71.26017546,
        4.714730581,
        -156.8215024,
        71.26471674,
        10.71473058
      ],
      "properties": {
        "datetime": "2018-09-08T05:00:18Z",
        "pc:count": 3183810,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103940.4373,
            "count": 3183810,
            "maximum": -103694.584,
            "minimum": -104190.184,
            "name": "X",
            "position": 0,
            "stddev": 134.8104842,
            "variance": 18173.86665
          },
          {
            "average": 2365035.323,
            "count": 3183810,
            "maximum": 2365264.63,
            "minimum": 2364790.89,
            "name": "Y",
            "position": 1,
            "stddev": 129.153467,
            "variance": 16680.61804
          },
          {
            "average": 8.266980878,
            "count": 3183810,
            "maximum": 10.71473058,
            "minimum": 4.714730581,
            "name": "Z",
            "position": 2,
            "stddev": 1.229925067,
            "variance": 1.512715669
          },
          {
            "average": 45892.16538,
            "count": 3183810,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 7200.638632,
            "variance": 51849196.71
          },
          {
            "average": 1,
            "count": 3183810,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3183810,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4977464107,
            "count": 3183810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999949998,
            "variance": 0.2499949999
          },
          {
            "average": 0.0003960663482,
            "count": 3183810,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01989747733,
            "variance": 0.000395909604
          },
          {
            "average": 1.310043627,
            "count": 3183810,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4625214224,
            "variance": 0.2139260662
          },
          {
            "average": 0.4441446549,
            "count": 3183810,
            "maximum": 16.4279995,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.119533,
            "variance": 102.4049481
          },
          {
            "average": 0.4700431244,
            "count": 3183810,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991018572,
            "variance": 0.2491026638
          },
          {
            "average": 409.3007934,
            "count": 3183810,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.896157327,
            "variance": 0.8030979547
          },
          {
            "average": 220416892.7,
            "count": 3183810,
            "maximum": 220418018.6,
            "minimum": 220415745.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.77211,
            "variance": 288124.298
          },
          {
            "average": 0.4700431244,
            "count": 3183810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991018572,
            "variance": 0.2491026638
          },
          {
            "average": 0,
            "count": 3183810,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3183810,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3183810,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2065710579,
            "count": 3183810,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4048450413,
            "variance": 0.1638995074
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104190.184,
          2364790.89,
          4.714730581,
          -103694.584,
          2365264.63,
          10.71473058
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104190.1840372139,
                2364790.889571393,
                4.714730580753596
              ],
              [
                -104190.1840372139,
                2365264.629571393,
                4.714730580753596
              ],
              [
                -103694.58403721389,
                2365264.629571393,
                10.714730580753596
              ],
              [
                -103694.58403721389,
                2364790.889571393,
                10.714730580753596
              ],
              [
                -104190.1840372139,
                2364790.889571393,
                4.714730580753596
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:00:18+00:00",
        "end_time": "2018-09-08T04:22:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1829.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1829.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1829.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1829.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8355212,
            71.26017546,
            4.714730581,
            -156.8215024,
            71.26471674,
            10.71473058
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83497120603192,
                  71.2601754644524,
                  4.714730580753596
                ],
                [
                  -156.8355212413306,
                  71.26452289950682,
                  4.714730580753596
                ],
                [
                  -156.82204982629614,
                  71.26471674476443,
                  10.714730580753596
                ],
                [
                  -156.82150239787893,
                  71.26036926647464,
                  10.714730580753596
                ],
                [
                  -156.83497120603192,
                  71.2601754644524,
                  4.714730580753596
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1829.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1829.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:00:18Z",
            "pc:count": 3183810,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103940.4373,
                "count": 3183810,
                "maximum": -103694.584,
                "minimum": -104190.184,
                "name": "X",
                "position": 0,
                "stddev": 134.8104842,
                "variance": 18173.86665
              },
              {
                "average": 2365035.323,
                "count": 3183810,
                "maximum": 2365264.63,
                "minimum": 2364790.89,
                "name": "Y",
                "position": 1,
                "stddev": 129.153467,
                "variance": 16680.61804
              },
              {
                "average": 8.266980878,
                "count": 3183810,
                "maximum": 10.71473058,
                "minimum": 4.714730581,
                "name": "Z",
                "position": 2,
                "stddev": 1.229925067,
                "variance": 1.512715669
              },
              {
                "average": 45892.16538,
                "count": 3183810,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 7200.638632,
                "variance": 51849196.71
              },
              {
                "average": 1,
                "count": 3183810,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3183810,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4977464107,
                "count": 3183810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999949998,
                "variance": 0.2499949999
              },
              {
                "average": 0.0003960663482,
                "count": 3183810,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01989747733,
                "variance": 0.000395909604
              },
              {
                "average": 1.310043627,
                "count": 3183810,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4625214224,
                "variance": 0.2139260662
              },
              {
                "average": 0.4441446549,
                "count": 3183810,
                "maximum": 16.4279995,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.119533,
                "variance": 102.4049481
              },
              {
                "average": 0.4700431244,
                "count": 3183810,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991018572,
                "variance": 0.2491026638
              },
              {
                "average": 409.3007934,
                "count": 3183810,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.896157327,
                "variance": 0.8030979547
              },
              {
                "average": 220416892.7,
                "count": 3183810,
                "maximum": 220418018.6,
                "minimum": 220415745.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.77211,
                "variance": 288124.298
              },
              {
                "average": 0.4700431244,
                "count": 3183810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991018572,
                "variance": 0.2491026638
              },
              {
                "average": 0,
                "count": 3183810,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3183810,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3183810,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2065710579,
                "count": 3183810,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4048450413,
                "variance": 0.1638995074
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104190.184,
              2364790.89,
              4.714730581,
              -103694.584,
              2365264.63,
              10.71473058
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104190.1840372139,
                    2364790.889571393,
                    4.714730580753596
                  ],
                  [
                    -104190.1840372139,
                    2365264.629571393,
                    4.714730580753596
                  ],
                  [
                    -103694.58403721389,
                    2365264.629571393,
                    10.714730580753596
                  ],
                  [
                    -103694.58403721389,
                    2364790.889571393,
                    10.714730580753596
                  ],
                  [
                    -104190.1840372139,
                    2364790.889571393,
                    4.714730580753596
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:00:18+00:00",
            "end_time": "2018-09-08T04:22:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2050.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74444505781506,
              71.2800871806945,
              3.79134624702044
            ],
            [
              -156.74497801286998,
              71.284435447126,
              3.79134624702044
            ],
            [
              -156.73149058978436,
              71.28462316142505,
              12.45134624702044
            ],
            [
              -156.73096024747676,
              71.28027485306947,
              12.45134624702044
            ],
            [
              -156.74444505781506,
              71.2800871806945,
              3.79134624702044
            ]
          ]
        ]
      },
      "bbox": [
        -156.744978,
        71.28008718,
        3.791346247,
        -156.7309602,
        71.28462316,
        12.45134625
      ],
      "properties": {
        "datetime": "2018-09-08T05:17:28Z",
        "pc:count": 2402318,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100525.6759,
            "count": 2402318,
            "maximum": -100279.8395,
            "minimum": -100775.5595,
            "name": "X",
            "position": 0,
            "stddev": 148.1638978,
            "variance": 21952.54062
          },
          {
            "average": 2367061.88,
            "count": 2402318,
            "maximum": 2367290.711,
            "minimum": 2366816.971,
            "name": "Y",
            "position": 1,
            "stddev": 125.8759811,
            "variance": 15844.76261
          },
          {
            "average": 7.711787979,
            "count": 2402318,
            "maximum": 12.45134625,
            "minimum": 3.791346247,
            "name": "Z",
            "position": 2,
            "stddev": 2.174474074,
            "variance": 4.728337499
          },
          {
            "average": 44153.09677,
            "count": 2402318,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12103.85893,
            "variance": 146503400.9
          },
          {
            "average": 1.000011655,
            "count": 2402318,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003413982789,
            "variance": 1.165527849e-05
          },
          {
            "average": 1.000023311,
            "count": 2402318,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004828072625,
            "variance": 2.331028528e-05
          },
          {
            "average": 0.5024647028,
            "count": 2402318,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999940293,
            "variance": 0.2499940293
          },
          {
            "average": 0.0004320826801,
            "count": 2402318,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02078211165,
            "variance": 0.0004318961645
          },
          {
            "average": 2.102286209,
            "count": 2402318,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.405407078,
            "variance": 5.785983209
          },
          {
            "average": 0.4177702122,
            "count": 2402318,
            "maximum": 16.41600037,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.90344122,
            "variance": 98.078148
          },
          {
            "average": 0.5244996707,
            "count": 2402318,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993995094,
            "variance": 0.24939987
          },
          {
            "average": 410.7732969,
            "count": 2402318,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9258099099,
            "variance": 0.8571239893
          },
          {
            "average": 220417731.2,
            "count": 2402318,
            "maximum": 220419048.6,
            "minimum": 220416826.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.9084818,
            "variance": 265130.7446
          },
          {
            "average": 0.5244996707,
            "count": 2402318,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993995094,
            "variance": 0.24939987
          },
          {
            "average": 0,
            "count": 2402318,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2402318,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2402318,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2062100022,
            "count": 2402318,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4045831253,
            "variance": 0.1636875053
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100775.5595,
          2366816.971,
          3.791346247,
          -100279.8395,
          2367290.711,
          12.45134625
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100775.55953492971,
                2366816.97081144,
                3.79134624702044
              ],
              [
                -100775.55953492971,
                2367290.7108114404,
                3.79134624702044
              ],
              [
                -100279.8395349297,
                2367290.7108114404,
                12.45134624702044
              ],
              [
                -100279.8395349297,
                2366816.97081144,
                12.45134624702044
              ],
              [
                -100775.55953492971,
                2366816.97081144,
                3.79134624702044
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:17:28+00:00",
        "end_time": "2018-09-08T04:40:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2050.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2050.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2050.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2050.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.744978,
            71.28008718,
            3.791346247,
            -156.7309602,
            71.28462316,
            12.45134625
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74444505781506,
                  71.2800871806945,
                  3.79134624702044
                ],
                [
                  -156.74497801286998,
                  71.284435447126,
                  3.79134624702044
                ],
                [
                  -156.73149058978436,
                  71.28462316142505,
                  12.45134624702044
                ],
                [
                  -156.73096024747676,
                  71.28027485306947,
                  12.45134624702044
                ],
                [
                  -156.74444505781506,
                  71.2800871806945,
                  3.79134624702044
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2050.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2050.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:17:28Z",
            "pc:count": 2402318,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100525.6759,
                "count": 2402318,
                "maximum": -100279.8395,
                "minimum": -100775.5595,
                "name": "X",
                "position": 0,
                "stddev": 148.1638978,
                "variance": 21952.54062
              },
              {
                "average": 2367061.88,
                "count": 2402318,
                "maximum": 2367290.711,
                "minimum": 2366816.971,
                "name": "Y",
                "position": 1,
                "stddev": 125.8759811,
                "variance": 15844.76261
              },
              {
                "average": 7.711787979,
                "count": 2402318,
                "maximum": 12.45134625,
                "minimum": 3.791346247,
                "name": "Z",
                "position": 2,
                "stddev": 2.174474074,
                "variance": 4.728337499
              },
              {
                "average": 44153.09677,
                "count": 2402318,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12103.85893,
                "variance": 146503400.9
              },
              {
                "average": 1.000011655,
                "count": 2402318,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003413982789,
                "variance": 1.165527849e-05
              },
              {
                "average": 1.000023311,
                "count": 2402318,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004828072625,
                "variance": 2.331028528e-05
              },
              {
                "average": 0.5024647028,
                "count": 2402318,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999940293,
                "variance": 0.2499940293
              },
              {
                "average": 0.0004320826801,
                "count": 2402318,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02078211165,
                "variance": 0.0004318961645
              },
              {
                "average": 2.102286209,
                "count": 2402318,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.405407078,
                "variance": 5.785983209
              },
              {
                "average": 0.4177702122,
                "count": 2402318,
                "maximum": 16.41600037,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.90344122,
                "variance": 98.078148
              },
              {
                "average": 0.5244996707,
                "count": 2402318,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993995094,
                "variance": 0.24939987
              },
              {
                "average": 410.7732969,
                "count": 2402318,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9258099099,
                "variance": 0.8571239893
              },
              {
                "average": 220417731.2,
                "count": 2402318,
                "maximum": 220419048.6,
                "minimum": 220416826.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.9084818,
                "variance": 265130.7446
              },
              {
                "average": 0.5244996707,
                "count": 2402318,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993995094,
                "variance": 0.24939987
              },
              {
                "average": 0,
                "count": 2402318,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2402318,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2402318,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2062100022,
                "count": 2402318,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4045831253,
                "variance": 0.1636875053
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100775.5595,
              2366816.971,
              3.791346247,
              -100279.8395,
              2367290.711,
              12.45134625
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100775.55953492971,
                    2366816.97081144,
                    3.79134624702044
                  ],
                  [
                    -100775.55953492971,
                    2367290.7108114404,
                    3.79134624702044
                  ],
                  [
                    -100279.8395349297,
                    2367290.7108114404,
                    12.45134624702044
                  ],
                  [
                    -100279.8395349297,
                    2366816.97081144,
                    12.45134624702044
                  ],
                  [
                    -100775.55953492971,
                    2366816.97081144,
                    3.79134624702044
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:17:28+00:00",
            "end_time": "2018-09-08T04:40:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1886.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75824821973433,
              71.26378360976076,
              10.345260488425055
            ],
            [
              -156.7587835094183,
              71.26813172893117,
              10.345260488425055
            ],
            [
              -156.74530655397464,
              71.26832036114675,
              519.405260488425
            ],
            [
              -156.74477387326493,
              71.26397219988829,
              519.405260488425
            ],
            [
              -156.75824821973433,
              71.26378360976076,
              10.345260488425055
            ]
          ]
        ]
      },
      "bbox": [
        -156.7587835,
        71.26378361,
        10.34526049,
        -156.7447739,
        71.26832036,
        519.4052605
      ],
      "properties": {
        "datetime": "2018-09-08T05:35:52Z",
        "pc:count": 3191182,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101110.9761,
            "count": 3191182,
            "maximum": -100860.1129,
            "minimum": -101355.8129,
            "name": "X",
            "position": 0,
            "stddev": 134.8508427,
            "variance": 18184.74978
          },
          {
            "average": 2365299.465,
            "count": 3191182,
            "maximum": 2365538.413,
            "minimum": 2365064.633,
            "name": "Y",
            "position": 1,
            "stddev": 129.8433624,
            "variance": 16859.29877
          },
          {
            "average": 11.4483127,
            "count": 3191182,
            "maximum": 519.4052605,
            "minimum": 10.34526049,
            "name": "Z",
            "position": 2,
            "stddev": 0.7834552071,
            "variance": 0.6138020615
          },
          {
            "average": 41755.88462,
            "count": 3191182,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11121.75578,
            "variance": 123693451.7
          },
          {
            "average": 1.00000376,
            "count": 3191182,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00193916198,
            "variance": 3.760349186e-06
          },
          {
            "average": 1.000007521,
            "count": 3191182,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002742384016,
            "variance": 7.520670091e-06
          },
          {
            "average": 0.4983407402,
            "count": 3191182,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973252,
            "variance": 0.2499973252
          },
          {
            "average": 0.0004045522944,
            "count": 3191182,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02010941965,
            "variance": 0.0004043887586
          },
          {
            "average": 1.368410827,
            "count": 3191182,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6687942812,
            "variance": 0.4472857906
          },
          {
            "average": -0.3178547959,
            "count": 3191182,
            "maximum": 16.35000038,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.1173389,
            "variance": 102.3605463
          },
          {
            "average": 0.4557853485,
            "count": 3191182,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980413058,
            "variance": 0.2480451423
          },
          {
            "average": 413.5842998,
            "count": 3191182,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9406698217,
            "variance": 0.8848597135
          },
          {
            "average": 220419276.2,
            "count": 3191182,
            "maximum": 220420152.8,
            "minimum": 220418310.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.5648901,
            "variance": 284691.492
          },
          {
            "average": 0.4557853485,
            "count": 3191182,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980413058,
            "variance": 0.2480451423
          },
          {
            "average": 0,
            "count": 3191182,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191182,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191182,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2074980368,
            "count": 3191182,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4055152932,
            "variance": 0.164442653
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101355.8129,
          2365064.633,
          10.34526049,
          -100860.1129,
          2365538.413,
          519.4052605
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101355.81287506051,
                2365064.6326848585,
                10.345260488425055
              ],
              [
                -101355.81287506051,
                2365538.412684859,
                10.345260488425055
              ],
              [
                -100860.1128750605,
                2365538.412684859,
                519.405260488425
              ],
              [
                -100860.1128750605,
                2365064.6326848585,
                519.405260488425
              ],
              [
                -101355.81287506051,
                2365064.6326848585,
                10.345260488425055
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:35:52+00:00",
        "end_time": "2018-09-08T05:05:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1886.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1886.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1886.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1886.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7587835,
            71.26378361,
            10.34526049,
            -156.7447739,
            71.26832036,
            519.4052605
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75824821973433,
                  71.26378360976076,
                  10.345260488425055
                ],
                [
                  -156.7587835094183,
                  71.26813172893117,
                  10.345260488425055
                ],
                [
                  -156.74530655397464,
                  71.26832036114675,
                  519.405260488425
                ],
                [
                  -156.74477387326493,
                  71.26397219988829,
                  519.405260488425
                ],
                [
                  -156.75824821973433,
                  71.26378360976076,
                  10.345260488425055
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1886.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1886.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:35:52Z",
            "pc:count": 3191182,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101110.9761,
                "count": 3191182,
                "maximum": -100860.1129,
                "minimum": -101355.8129,
                "name": "X",
                "position": 0,
                "stddev": 134.8508427,
                "variance": 18184.74978
              },
              {
                "average": 2365299.465,
                "count": 3191182,
                "maximum": 2365538.413,
                "minimum": 2365064.633,
                "name": "Y",
                "position": 1,
                "stddev": 129.8433624,
                "variance": 16859.29877
              },
              {
                "average": 11.4483127,
                "count": 3191182,
                "maximum": 519.4052605,
                "minimum": 10.34526049,
                "name": "Z",
                "position": 2,
                "stddev": 0.7834552071,
                "variance": 0.6138020615
              },
              {
                "average": 41755.88462,
                "count": 3191182,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11121.75578,
                "variance": 123693451.7
              },
              {
                "average": 1.00000376,
                "count": 3191182,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00193916198,
                "variance": 3.760349186e-06
              },
              {
                "average": 1.000007521,
                "count": 3191182,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002742384016,
                "variance": 7.520670091e-06
              },
              {
                "average": 0.4983407402,
                "count": 3191182,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973252,
                "variance": 0.2499973252
              },
              {
                "average": 0.0004045522944,
                "count": 3191182,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02010941965,
                "variance": 0.0004043887586
              },
              {
                "average": 1.368410827,
                "count": 3191182,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6687942812,
                "variance": 0.4472857906
              },
              {
                "average": -0.3178547959,
                "count": 3191182,
                "maximum": 16.35000038,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.1173389,
                "variance": 102.3605463
              },
              {
                "average": 0.4557853485,
                "count": 3191182,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980413058,
                "variance": 0.2480451423
              },
              {
                "average": 413.5842998,
                "count": 3191182,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9406698217,
                "variance": 0.8848597135
              },
              {
                "average": 220419276.2,
                "count": 3191182,
                "maximum": 220420152.8,
                "minimum": 220418310.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.5648901,
                "variance": 284691.492
              },
              {
                "average": 0.4557853485,
                "count": 3191182,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980413058,
                "variance": 0.2480451423
              },
              {
                "average": 0,
                "count": 3191182,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191182,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191182,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2074980368,
                "count": 3191182,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4055152932,
                "variance": 0.164442653
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101355.8129,
              2365064.633,
              10.34526049,
              -100860.1129,
              2365538.413,
              519.4052605
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101355.81287506051,
                    2365064.6326848585,
                    10.345260488425055
                  ],
                  [
                    -101355.81287506051,
                    2365538.412684859,
                    10.345260488425055
                  ],
                  [
                    -100860.1128750605,
                    2365538.412684859,
                    519.405260488425
                  ],
                  [
                    -100860.1128750605,
                    2365064.6326848585,
                    519.405260488425
                  ],
                  [
                    -101355.81287506051,
                    2365064.6326848585,
                    10.345260488425055
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:35:52+00:00",
            "end_time": "2018-09-08T05:05:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2176.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70508209640133,
              71.29621574187992,
              2.719102871924353
            ],
            [
              -156.70560767910249,
              71.3005636694342,
              2.719102871924353
            ],
            [
              -156.692105312313,
              71.3007487730942,
              48.899102871924356
            ],
            [
              -156.69158234677639,
              71.29640080416364,
              48.899102871924356
            ],
            [
              -156.70508209640133,
              71.29621574187992,
              2.719102871924353
            ]
          ]
        ]
      },
      "bbox": [
        -156.7056077,
        71.29621574,
        2.719102872,
        -156.6915823,
        71.30074877,
        48.89910287
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:23Z",
        "pc:count": 2874064,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98998.22279,
            "count": 2874064,
            "maximum": -98763.57253,
            "minimum": -99259.47253,
            "name": "X",
            "position": 0,
            "stddev": 136.6218925,
            "variance": 18665.5415
          },
          {
            "average": 2368748.792,
            "count": 2874064,
            "maximum": 2368985.474,
            "minimum": 2368511.834,
            "name": "Y",
            "position": 1,
            "stddev": 127.9092002,
            "variance": 16360.76351
          },
          {
            "average": 5.617876337,
            "count": 2874064,
            "maximum": 48.89910287,
            "minimum": 2.719102872,
            "name": "Z",
            "position": 2,
            "stddev": 0.450706526,
            "variance": 0.2031363725
          },
          {
            "average": 35736.39635,
            "count": 2874064,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10959.70962,
            "variance": 120115234.9
          },
          {
            "average": 1.000171882,
            "count": 2874064,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01313576953,
            "variance": 0.0001725484411
          },
          {
            "average": 1.000343764,
            "count": 2874064,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01859391498,
            "variance": 0.0003457336743
          },
          {
            "average": 0.4994676528,
            "count": 2874064,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998036,
            "variance": 0.2499998036
          },
          {
            "average": 0.0004328365687,
            "count": 2874064,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02080022528,
            "variance": 0.0004326493717
          },
          {
            "average": 1.314215341,
            "count": 2874064,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4714651563,
            "variance": 0.2222793936
          },
          {
            "average": -0.1138265446,
            "count": 2874064,
            "maximum": 16.51199913,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50331828,
            "variance": 110.3196949
          },
          {
            "average": 0.4794552244,
            "count": 2874064,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995778208,
            "variance": 0.249577999
          },
          {
            "average": 409.8051543,
            "count": 2874064,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9389217942,
            "variance": 0.8815741357
          },
          {
            "average": 220417209.5,
            "count": 2874064,
            "maximum": 220418383.5,
            "minimum": 220416127.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.4371796,
            "variance": 284555.2246
          },
          {
            "average": 0.4794552244,
            "count": 2874064,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995778208,
            "variance": 0.249577999
          },
          {
            "average": 0,
            "count": 2874064,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2874064,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2874064,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.230731466,
            "count": 2874064,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4213009831,
            "variance": 0.1774945183
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99259.47253,
          2368511.834,
          2.719102872,
          -98763.57253,
          2368985.474,
          48.89910287
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99259.47253186682,
                2368511.8343728906,
                2.719102871924353
              ],
              [
                -99259.47253186682,
                2368985.4743728903,
                2.719102871924353
              ],
              [
                -98763.57253186683,
                2368985.4743728903,
                48.899102871924356
              ],
              [
                -98763.57253186683,
                2368511.8343728906,
                48.899102871924356
              ],
              [
                -99259.47253186682,
                2368511.8343728906,
                2.719102871924353
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:23+00:00",
        "end_time": "2018-09-08T04:28:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2176.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2176.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2176.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2176.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7056077,
            71.29621574,
            2.719102872,
            -156.6915823,
            71.30074877,
            48.89910287
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70508209640133,
                  71.29621574187992,
                  2.719102871924353
                ],
                [
                  -156.70560767910249,
                  71.3005636694342,
                  2.719102871924353
                ],
                [
                  -156.692105312313,
                  71.3007487730942,
                  48.899102871924356
                ],
                [
                  -156.69158234677639,
                  71.29640080416364,
                  48.899102871924356
                ],
                [
                  -156.70508209640133,
                  71.29621574187992,
                  2.719102871924353
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2176.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2176.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:23Z",
            "pc:count": 2874064,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98998.22279,
                "count": 2874064,
                "maximum": -98763.57253,
                "minimum": -99259.47253,
                "name": "X",
                "position": 0,
                "stddev": 136.6218925,
                "variance": 18665.5415
              },
              {
                "average": 2368748.792,
                "count": 2874064,
                "maximum": 2368985.474,
                "minimum": 2368511.834,
                "name": "Y",
                "position": 1,
                "stddev": 127.9092002,
                "variance": 16360.76351
              },
              {
                "average": 5.617876337,
                "count": 2874064,
                "maximum": 48.89910287,
                "minimum": 2.719102872,
                "name": "Z",
                "position": 2,
                "stddev": 0.450706526,
                "variance": 0.2031363725
              },
              {
                "average": 35736.39635,
                "count": 2874064,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10959.70962,
                "variance": 120115234.9
              },
              {
                "average": 1.000171882,
                "count": 2874064,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01313576953,
                "variance": 0.0001725484411
              },
              {
                "average": 1.000343764,
                "count": 2874064,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01859391498,
                "variance": 0.0003457336743
              },
              {
                "average": 0.4994676528,
                "count": 2874064,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998036,
                "variance": 0.2499998036
              },
              {
                "average": 0.0004328365687,
                "count": 2874064,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02080022528,
                "variance": 0.0004326493717
              },
              {
                "average": 1.314215341,
                "count": 2874064,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4714651563,
                "variance": 0.2222793936
              },
              {
                "average": -0.1138265446,
                "count": 2874064,
                "maximum": 16.51199913,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50331828,
                "variance": 110.3196949
              },
              {
                "average": 0.4794552244,
                "count": 2874064,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995778208,
                "variance": 0.249577999
              },
              {
                "average": 409.8051543,
                "count": 2874064,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9389217942,
                "variance": 0.8815741357
              },
              {
                "average": 220417209.5,
                "count": 2874064,
                "maximum": 220418383.5,
                "minimum": 220416127.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.4371796,
                "variance": 284555.2246
              },
              {
                "average": 0.4794552244,
                "count": 2874064,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995778208,
                "variance": 0.249577999
              },
              {
                "average": 0,
                "count": 2874064,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2874064,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2874064,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.230731466,
                "count": 2874064,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4213009831,
                "variance": 0.1774945183
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99259.47253,
              2368511.834,
              2.719102872,
              -98763.57253,
              2368985.474,
              48.89910287
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99259.47253186682,
                    2368511.8343728906,
                    2.719102871924353
                  ],
                  [
                    -99259.47253186682,
                    2368985.4743728903,
                    2.719102871924353
                  ],
                  [
                    -98763.57253186683,
                    2368985.4743728903,
                    48.899102871924356
                  ],
                  [
                    -98763.57253186683,
                    2368511.8343728906,
                    48.899102871924356
                  ],
                  [
                    -99259.47253186682,
                    2368511.8343728906,
                    2.719102871924353
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:23+00:00",
            "end_time": "2018-09-08T04:28:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2087.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69314187684978,
              71.28383659785014,
              5.311386100574524
            ],
            [
              -156.6936649400997,
              71.28818492821534,
              5.311386100574524
            ],
            [
              -156.68017320174908,
              71.28836915358725,
              6.571386100574523
            ],
            [
              -156.67965275265746,
              71.28402078206773,
              6.571386100574523
            ],
            [
              -156.69314187684978,
              71.28383659785014,
              5.311386100574524
            ]
          ]
        ]
      },
      "bbox": [
        -156.6936649,
        71.2838366,
        5.311386101,
        -156.6796528,
        71.28836915,
        6.571386101
      ],
      "properties": {
        "datetime": "2018-09-08T05:34:54Z",
        "pc:count": 2960633,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98630.49654,
            "count": 2960633,
            "maximum": -98380.43109,
            "minimum": -98876.21109,
            "name": "X",
            "position": 0,
            "stddev": 136.5082117,
            "variance": 18634.49185
          },
          {
            "average": 2367384.047,
            "count": 2960633,
            "maximum": 2367621.38,
            "minimum": 2367147.66,
            "name": "Y",
            "position": 1,
            "stddev": 130.9640979,
            "variance": 17151.59495
          },
          {
            "average": 5.696639936,
            "count": 2960633,
            "maximum": 6.571386101,
            "minimum": 5.311386101,
            "name": "Z",
            "position": 2,
            "stddev": 0.2250909246,
            "variance": 0.05066592432
          },
          {
            "average": 33185.56137,
            "count": 2960633,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9476.86884,
            "variance": 89811043.02
          },
          {
            "average": 1,
            "count": 2960633,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2960633,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.498936545,
            "count": 2960633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989535,
            "variance": 0.2499989535
          },
          {
            "average": 0.0004482149594,
            "count": 2960633,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02116634626,
            "variance": 0.0004480142141
          },
          {
            "average": 1.303064919,
            "count": 2960633,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4596492608,
            "variance": 0.211277443
          },
          {
            "average": -0.4986681237,
            "count": 2960633,
            "maximum": 16.26000023,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.19608704,
            "variance": 103.960191
          },
          {
            "average": 0.4595750301,
            "count": 2960633,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4983632267,
            "variance": 0.2483659057
          },
          {
            "average": 413.3563265,
            "count": 2960633,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9448027265,
            "variance": 0.8926521919
          },
          {
            "average": 220419152.2,
            "count": 2960633,
            "maximum": 220420094.8,
            "minimum": 220417919.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 519.6150669,
            "variance": 269999.8178
          },
          {
            "average": 0.4595750301,
            "count": 2960633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4983632267,
            "variance": 0.2483659057
          },
          {
            "average": 0,
            "count": 2960633,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2960633,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2960633,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2161230386,
            "count": 2960633,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4115992322,
            "variance": 0.169413928
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98876.21109,
          2367147.66,
          5.311386101,
          -98380.43109,
          2367621.38,
          6.571386101
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98876.21108544733,
                2367147.6602680353,
                5.311386100574524
              ],
              [
                -98876.21108544733,
                2367621.380268035,
                5.311386100574524
              ],
              [
                -98380.43108544733,
                2367621.380268035,
                6.571386100574523
              ],
              [
                -98380.43108544733,
                2367147.6602680353,
                6.571386100574523
              ],
              [
                -98876.21108544733,
                2367147.6602680353,
                5.311386100574524
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:34:54+00:00",
        "end_time": "2018-09-08T04:58:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2087.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2087.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2087.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2087.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6936649,
            71.2838366,
            5.311386101,
            -156.6796528,
            71.28836915,
            6.571386101
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69314187684978,
                  71.28383659785014,
                  5.311386100574524
                ],
                [
                  -156.6936649400997,
                  71.28818492821534,
                  5.311386100574524
                ],
                [
                  -156.68017320174908,
                  71.28836915358725,
                  6.571386100574523
                ],
                [
                  -156.67965275265746,
                  71.28402078206773,
                  6.571386100574523
                ],
                [
                  -156.69314187684978,
                  71.28383659785014,
                  5.311386100574524
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2087.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2087.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:34:54Z",
            "pc:count": 2960633,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98630.49654,
                "count": 2960633,
                "maximum": -98380.43109,
                "minimum": -98876.21109,
                "name": "X",
                "position": 0,
                "stddev": 136.5082117,
                "variance": 18634.49185
              },
              {
                "average": 2367384.047,
                "count": 2960633,
                "maximum": 2367621.38,
                "minimum": 2367147.66,
                "name": "Y",
                "position": 1,
                "stddev": 130.9640979,
                "variance": 17151.59495
              },
              {
                "average": 5.696639936,
                "count": 2960633,
                "maximum": 6.571386101,
                "minimum": 5.311386101,
                "name": "Z",
                "position": 2,
                "stddev": 0.2250909246,
                "variance": 0.05066592432
              },
              {
                "average": 33185.56137,
                "count": 2960633,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9476.86884,
                "variance": 89811043.02
              },
              {
                "average": 1,
                "count": 2960633,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2960633,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.498936545,
                "count": 2960633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989535,
                "variance": 0.2499989535
              },
              {
                "average": 0.0004482149594,
                "count": 2960633,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02116634626,
                "variance": 0.0004480142141
              },
              {
                "average": 1.303064919,
                "count": 2960633,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4596492608,
                "variance": 0.211277443
              },
              {
                "average": -0.4986681237,
                "count": 2960633,
                "maximum": 16.26000023,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.19608704,
                "variance": 103.960191
              },
              {
                "average": 0.4595750301,
                "count": 2960633,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4983632267,
                "variance": 0.2483659057
              },
              {
                "average": 413.3563265,
                "count": 2960633,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9448027265,
                "variance": 0.8926521919
              },
              {
                "average": 220419152.2,
                "count": 2960633,
                "maximum": 220420094.8,
                "minimum": 220417919.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 519.6150669,
                "variance": 269999.8178
              },
              {
                "average": 0.4595750301,
                "count": 2960633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4983632267,
                "variance": 0.2483659057
              },
              {
                "average": 0,
                "count": 2960633,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2960633,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2960633,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2161230386,
                "count": 2960633,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4115992322,
                "variance": 0.169413928
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98876.21109,
              2367147.66,
              5.311386101,
              -98380.43109,
              2367621.38,
              6.571386101
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98876.21108544733,
                    2367147.6602680353,
                    5.311386100574524
                  ],
                  [
                    -98876.21108544733,
                    2367621.380268035,
                    5.311386100574524
                  ],
                  [
                    -98380.43108544733,
                    2367621.380268035,
                    6.571386100574523
                  ],
                  [
                    -98380.43108544733,
                    2367147.6602680353,
                    6.571386100574523
                  ],
                  [
                    -98876.21108544733,
                    2367147.6602680353,
                    5.311386100574524
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:34:54+00:00",
            "end_time": "2018-09-08T04:58:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1726.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8099879221631,
              71.25182259468286,
              9.733042787954465
            ],
            [
              -156.81053284108478,
              71.25616930514515,
              9.733042787954465
            ],
            [
              -156.79706351170526,
              71.25636146713734,
              11.533042787954466
            ],
            [
              -156.79652119808588,
              71.25201471384291,
              11.533042787954466
            ],
            [
              -156.8099879221631,
              71.25182259468286,
              9.733042787954465
            ]
          ]
        ]
      },
      "bbox": [
        -156.8105328,
        71.25182259,
        9.733042788,
        -156.7965212,
        71.25636147,
        11.53304279
      ],
      "properties": {
        "datetime": "2018-09-08T05:36:28Z",
        "pc:count": 2941795,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103059.1412,
            "count": 2941795,
            "maximum": -102815.3228,
            "minimum": -103311.0228,
            "name": "X",
            "position": 0,
            "stddev": 137.1440623,
            "variance": 18808.49381
          },
          {
            "average": 2364083.503,
            "count": 2941795,
            "maximum": 2364316.939,
            "minimum": 2363843.259,
            "name": "Y",
            "position": 1,
            "stddev": 129.9318376,
            "variance": 16882.28242
          },
          {
            "average": 10.39968584,
            "count": 2941795,
            "maximum": 11.53304279,
            "minimum": 9.733042788,
            "name": "Z",
            "position": 2,
            "stddev": 0.1845577596,
            "variance": 0.03406156663
          },
          {
            "average": 37541.16511,
            "count": 2941795,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12194.37989,
            "variance": 148702900.9
          },
          {
            "average": 1,
            "count": 2941795,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2941795,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5016301272,
            "count": 2941795,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999974277,
            "variance": 0.2499974277
          },
          {
            "average": 0.0004276300694,
            "count": 2941795,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02067479981,
            "variance": 0.0004274473472
          },
          {
            "average": 1.299567101,
            "count": 2941795,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4583377712,
            "variance": 0.2100735125
          },
          {
            "average": 1.144192421,
            "count": 2941795,
            "maximum": 16.55999947,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4733839,
            "variance": 109.6917703
          },
          {
            "average": 0.5157806713,
            "count": 2941795,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997509933,
            "variance": 0.2497510553
          },
          {
            "average": 412.8364794,
            "count": 2941795,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9517278291,
            "variance": 0.9057858606
          },
          {
            "average": 220418854.1,
            "count": 2941795,
            "maximum": 220420188.1,
            "minimum": 220418010.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 512.0308177,
            "variance": 262175.5582
          },
          {
            "average": 0.5157806713,
            "count": 2941795,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997509933,
            "variance": 0.2497510553
          },
          {
            "average": 0,
            "count": 2941795,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2941795,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2941795,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2582229557,
            "count": 2941795,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4376573157,
            "variance": 0.191543926
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103311.0228,
          2363843.259,
          9.733042788,
          -102815.3228,
          2364316.939,
          11.53304279
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103311.02281860076,
                2363843.2590559875,
                9.733042787954465
              ],
              [
                -103311.02281860076,
                2364316.939055987,
                9.733042787954465
              ],
              [
                -102815.32281860075,
                2364316.939055987,
                11.533042787954466
              ],
              [
                -102815.32281860075,
                2363843.2590559875,
                11.533042787954466
              ],
              [
                -103311.02281860076,
                2363843.2590559875,
                9.733042787954465
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:36:28+00:00",
        "end_time": "2018-09-08T05:00:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1726.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1726.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1726.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1726.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8105328,
            71.25182259,
            9.733042788,
            -156.7965212,
            71.25636147,
            11.53304279
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8099879221631,
                  71.25182259468286,
                  9.733042787954465
                ],
                [
                  -156.81053284108478,
                  71.25616930514515,
                  9.733042787954465
                ],
                [
                  -156.79706351170526,
                  71.25636146713734,
                  11.533042787954466
                ],
                [
                  -156.79652119808588,
                  71.25201471384291,
                  11.533042787954466
                ],
                [
                  -156.8099879221631,
                  71.25182259468286,
                  9.733042787954465
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1726.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1726.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:36:28Z",
            "pc:count": 2941795,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103059.1412,
                "count": 2941795,
                "maximum": -102815.3228,
                "minimum": -103311.0228,
                "name": "X",
                "position": 0,
                "stddev": 137.1440623,
                "variance": 18808.49381
              },
              {
                "average": 2364083.503,
                "count": 2941795,
                "maximum": 2364316.939,
                "minimum": 2363843.259,
                "name": "Y",
                "position": 1,
                "stddev": 129.9318376,
                "variance": 16882.28242
              },
              {
                "average": 10.39968584,
                "count": 2941795,
                "maximum": 11.53304279,
                "minimum": 9.733042788,
                "name": "Z",
                "position": 2,
                "stddev": 0.1845577596,
                "variance": 0.03406156663
              },
              {
                "average": 37541.16511,
                "count": 2941795,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12194.37989,
                "variance": 148702900.9
              },
              {
                "average": 1,
                "count": 2941795,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2941795,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5016301272,
                "count": 2941795,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999974277,
                "variance": 0.2499974277
              },
              {
                "average": 0.0004276300694,
                "count": 2941795,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02067479981,
                "variance": 0.0004274473472
              },
              {
                "average": 1.299567101,
                "count": 2941795,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4583377712,
                "variance": 0.2100735125
              },
              {
                "average": 1.144192421,
                "count": 2941795,
                "maximum": 16.55999947,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4733839,
                "variance": 109.6917703
              },
              {
                "average": 0.5157806713,
                "count": 2941795,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997509933,
                "variance": 0.2497510553
              },
              {
                "average": 412.8364794,
                "count": 2941795,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9517278291,
                "variance": 0.9057858606
              },
              {
                "average": 220418854.1,
                "count": 2941795,
                "maximum": 220420188.1,
                "minimum": 220418010.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 512.0308177,
                "variance": 262175.5582
              },
              {
                "average": 0.5157806713,
                "count": 2941795,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997509933,
                "variance": 0.2497510553
              },
              {
                "average": 0,
                "count": 2941795,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2941795,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2941795,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2582229557,
                "count": 2941795,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4376573157,
                "variance": 0.191543926
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103311.0228,
              2363843.259,
              9.733042788,
              -102815.3228,
              2364316.939,
              11.53304279
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103311.02281860076,
                    2363843.2590559875,
                    9.733042787954465
                  ],
                  [
                    -103311.02281860076,
                    2364316.939055987,
                    9.733042787954465
                  ],
                  [
                    -102815.32281860075,
                    2364316.939055987,
                    11.533042787954466
                  ],
                  [
                    -102815.32281860075,
                    2363843.2590559875,
                    11.533042787954466
                  ],
                  [
                    -103311.02281860076,
                    2363843.2590559875,
                    9.733042787954465
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:36:28+00:00",
            "end_time": "2018-09-08T05:00:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1980.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7449743820402,
              71.27189400244153,
              3.76673888074836
            ],
            [
              -156.74550701994838,
              71.27624019194556,
              3.76673888074836
            ],
            [
              -156.7320261650653,
              71.27642790962746,
              11.626738880748361
            ],
            [
              -156.7314961365729,
              71.27208167823842,
              11.626738880748361
            ],
            [
              -156.7449743820402,
              71.27189400244153,
              3.76673888074836
            ]
          ]
        ]
      },
      "bbox": [
        -156.745507,
        71.271894,
        3.766738881,
        -156.7314961,
        71.27642791,
        11.62673888
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:37Z",
        "pc:count": 2833221,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100610.0481,
            "count": 2833221,
            "maximum": -100336.1803,
            "minimum": -100831.8403,
            "name": "X",
            "position": 0,
            "stddev": 123.3169018,
            "variance": 15207.05828
          },
          {
            "average": 2366153.801,
            "count": 2833221,
            "maximum": 2366400.161,
            "minimum": 2365926.621,
            "name": "Y",
            "position": 1,
            "stddev": 128.5067628,
            "variance": 16513.98808
          },
          {
            "average": 8.553687382,
            "count": 2833221,
            "maximum": 11.62673888,
            "minimum": 3.766738881,
            "name": "Z",
            "position": 2,
            "stddev": 1.755667087,
            "variance": 3.082366922
          },
          {
            "average": 47500.24149,
            "count": 2833221,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7513.30967,
            "variance": 56449822.2
          },
          {
            "average": 1.000168007,
            "count": 2833221,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01296065176,
            "variance": 0.000167978494
          },
          {
            "average": 1.000334249,
            "count": 2833221,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01827941306,
            "variance": 0.0003341369419
          },
          {
            "average": 0.5022883848,
            "count": 2833221,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999948515,
            "variance": 0.2499948515
          },
          {
            "average": 0.0004203696076,
            "count": 2833221,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02049861081,
            "variance": 0.0004201930453
          },
          {
            "average": 1.345412871,
            "count": 2833221,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9589596345,
            "variance": 0.9196035806
          },
          {
            "average": 1.632192688,
            "count": 2833221,
            "maximum": 16.3560009,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63195215,
            "variance": 113.0384065
          },
          {
            "average": 0.5416605341,
            "count": 2833221,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498261465,
            "variance": 0.2482644875
          },
          {
            "average": 412.6302957,
            "count": 2833221,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.003011424,
            "variance": 1.006031917
          },
          {
            "average": 220418754.9,
            "count": 2833221,
            "maximum": 220419417.2,
            "minimum": 220417953.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 529.2310449,
            "variance": 280085.4989
          },
          {
            "average": 0.5416605341,
            "count": 2833221,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498261465,
            "variance": 0.2482644875
          },
          {
            "average": 0,
            "count": 2833221,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2833221,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2833221,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.272058551,
            "count": 2833221,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4450199611,
            "variance": 0.1980427657
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100831.8403,
          2365926.621,
          3.766738881,
          -100336.1803,
          2366400.161,
          11.62673888
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100831.8402872267,
                2365926.620545083,
                3.76673888074836
              ],
              [
                -100831.8402872267,
                2366400.160545083,
                3.76673888074836
              ],
              [
                -100336.1802872267,
                2366400.160545083,
                11.626738880748361
              ],
              [
                -100336.1802872267,
                2365926.620545083,
                11.626738880748361
              ],
              [
                -100831.8402872267,
                2365926.620545083,
                3.76673888074836
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:37+00:00",
        "end_time": "2018-09-08T04:59:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1980.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1980.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1980.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1980.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.745507,
            71.271894,
            3.766738881,
            -156.7314961,
            71.27642791,
            11.62673888
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7449743820402,
                  71.27189400244153,
                  3.76673888074836
                ],
                [
                  -156.74550701994838,
                  71.27624019194556,
                  3.76673888074836
                ],
                [
                  -156.7320261650653,
                  71.27642790962746,
                  11.626738880748361
                ],
                [
                  -156.7314961365729,
                  71.27208167823842,
                  11.626738880748361
                ],
                [
                  -156.7449743820402,
                  71.27189400244153,
                  3.76673888074836
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1980.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1980.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:37Z",
            "pc:count": 2833221,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100610.0481,
                "count": 2833221,
                "maximum": -100336.1803,
                "minimum": -100831.8403,
                "name": "X",
                "position": 0,
                "stddev": 123.3169018,
                "variance": 15207.05828
              },
              {
                "average": 2366153.801,
                "count": 2833221,
                "maximum": 2366400.161,
                "minimum": 2365926.621,
                "name": "Y",
                "position": 1,
                "stddev": 128.5067628,
                "variance": 16513.98808
              },
              {
                "average": 8.553687382,
                "count": 2833221,
                "maximum": 11.62673888,
                "minimum": 3.766738881,
                "name": "Z",
                "position": 2,
                "stddev": 1.755667087,
                "variance": 3.082366922
              },
              {
                "average": 47500.24149,
                "count": 2833221,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7513.30967,
                "variance": 56449822.2
              },
              {
                "average": 1.000168007,
                "count": 2833221,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01296065176,
                "variance": 0.000167978494
              },
              {
                "average": 1.000334249,
                "count": 2833221,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01827941306,
                "variance": 0.0003341369419
              },
              {
                "average": 0.5022883848,
                "count": 2833221,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999948515,
                "variance": 0.2499948515
              },
              {
                "average": 0.0004203696076,
                "count": 2833221,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02049861081,
                "variance": 0.0004201930453
              },
              {
                "average": 1.345412871,
                "count": 2833221,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9589596345,
                "variance": 0.9196035806
              },
              {
                "average": 1.632192688,
                "count": 2833221,
                "maximum": 16.3560009,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63195215,
                "variance": 113.0384065
              },
              {
                "average": 0.5416605341,
                "count": 2833221,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498261465,
                "variance": 0.2482644875
              },
              {
                "average": 412.6302957,
                "count": 2833221,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.003011424,
                "variance": 1.006031917
              },
              {
                "average": 220418754.9,
                "count": 2833221,
                "maximum": 220419417.2,
                "minimum": 220417953.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 529.2310449,
                "variance": 280085.4989
              },
              {
                "average": 0.5416605341,
                "count": 2833221,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498261465,
                "variance": 0.2482644875
              },
              {
                "average": 0,
                "count": 2833221,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2833221,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2833221,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.272058551,
                "count": 2833221,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4450199611,
                "variance": 0.1980427657
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100831.8403,
              2365926.621,
              3.766738881,
              -100336.1803,
              2366400.161,
              11.62673888
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100831.8402872267,
                    2365926.620545083,
                    3.76673888074836
                  ],
                  [
                    -100831.8402872267,
                    2366400.160545083,
                    3.76673888074836
                  ],
                  [
                    -100336.1802872267,
                    2366400.160545083,
                    11.626738880748361
                  ],
                  [
                    -100336.1802872267,
                    2365926.620545083,
                    11.626738880748361
                  ],
                  [
                    -100831.8402872267,
                    2365926.620545083,
                    3.76673888074836
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:37+00:00",
            "end_time": "2018-09-08T04:59:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2148.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71812026470815,
              71.29220654383766,
              5.949544308415372
            ],
            [
              -156.7186481508894,
              71.29655321719355,
              5.949544308415372
            ],
            [
              -156.70514830993454,
              71.29673920979648,
              16.16954430841537
            ],
            [
              -156.70462303923412,
              71.29239249488724,
              16.16954430841537
            ],
            [
              -156.71812026470815,
              71.29220654383766,
              5.949544308415372
            ]
          ]
        ]
      },
      "bbox": [
        -156.7186482,
        71.29220654,
        5.949544308,
        -156.704623,
        71.29673921,
        16.16954431
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:12Z",
        "pc:count": 3143188,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99507.26252,
            "count": 3143188,
            "maximum": -99259.58057,
            "minimum": -99755.48057,
            "name": "X",
            "position": 0,
            "stddev": 134.6534717,
            "variance": 18131.55743
          },
          {
            "average": 2368329.45,
            "count": 3143188,
            "maximum": 2368568.863,
            "minimum": 2368095.343,
            "name": "Y",
            "position": 1,
            "stddev": 128.5188165,
            "variance": 16517.08619
          },
          {
            "average": 7.954675347,
            "count": 3143188,
            "maximum": 16.16954431,
            "minimum": 5.949544308,
            "name": "Z",
            "position": 2,
            "stddev": 1.227404129,
            "variance": 1.506520897
          },
          {
            "average": 42409.43277,
            "count": 3143188,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11844.29661,
            "variance": 140287362.1
          },
          {
            "average": 1.000003181,
            "count": 3143188,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001783668733,
            "variance": 3.181474149e-06
          },
          {
            "average": 1.000006363,
            "count": 3143188,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0025224845,
            "variance": 6.362928054e-06
          },
          {
            "average": 0.500965262,
            "count": 3143188,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999991478,
            "variance": 0.2499991478
          },
          {
            "average": 0.0004482709911,
            "count": 3143188,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02116766843,
            "variance": 0.0004480701868
          },
          {
            "average": 1.300752294,
            "count": 3143188,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4605133061,
            "variance": 0.2120725051
          },
          {
            "average": -0.5971011462,
            "count": 3143188,
            "maximum": 16.33200073,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.3970828,
            "variance": 108.0993307
          },
          {
            "average": 0.4803941094,
            "count": 3143188,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996155407,
            "variance": 0.2496156885
          },
          {
            "average": 409.8778139,
            "count": 3143188,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9298941992,
            "variance": 0.8647032217
          },
          {
            "average": 220417250,
            "count": 3143188,
            "maximum": 220418372.5,
            "minimum": 220416116.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 532.1207961,
            "variance": 283152.5417
          },
          {
            "average": 0.4803941094,
            "count": 3143188,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996155407,
            "variance": 0.2496156885
          },
          {
            "average": 0,
            "count": 3143188,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3143188,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3143188,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2295933301,
            "count": 3143188,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4205713841,
            "variance": 0.1768802891
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99755.48057,
          2368095.343,
          5.949544308,
          -99259.58057,
          2368568.863,
          16.16954431
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99755.48057289419,
                2368095.3433033116,
                5.949544308415372
              ],
              [
                -99755.48057289419,
                2368568.863303311,
                5.949544308415372
              ],
              [
                -99259.58057289419,
                2368568.863303311,
                16.16954430841537
              ],
              [
                -99259.58057289419,
                2368095.3433033116,
                16.16954430841537
              ],
              [
                -99755.48057289419,
                2368095.3433033116,
                5.949544308415372
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:12+00:00",
        "end_time": "2018-09-08T04:28:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2148.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2148.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2148.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2148.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7186482,
            71.29220654,
            5.949544308,
            -156.704623,
            71.29673921,
            16.16954431
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71812026470815,
                  71.29220654383766,
                  5.949544308415372
                ],
                [
                  -156.7186481508894,
                  71.29655321719355,
                  5.949544308415372
                ],
                [
                  -156.70514830993454,
                  71.29673920979648,
                  16.16954430841537
                ],
                [
                  -156.70462303923412,
                  71.29239249488724,
                  16.16954430841537
                ],
                [
                  -156.71812026470815,
                  71.29220654383766,
                  5.949544308415372
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2148.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2148.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:12Z",
            "pc:count": 3143188,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99507.26252,
                "count": 3143188,
                "maximum": -99259.58057,
                "minimum": -99755.48057,
                "name": "X",
                "position": 0,
                "stddev": 134.6534717,
                "variance": 18131.55743
              },
              {
                "average": 2368329.45,
                "count": 3143188,
                "maximum": 2368568.863,
                "minimum": 2368095.343,
                "name": "Y",
                "position": 1,
                "stddev": 128.5188165,
                "variance": 16517.08619
              },
              {
                "average": 7.954675347,
                "count": 3143188,
                "maximum": 16.16954431,
                "minimum": 5.949544308,
                "name": "Z",
                "position": 2,
                "stddev": 1.227404129,
                "variance": 1.506520897
              },
              {
                "average": 42409.43277,
                "count": 3143188,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11844.29661,
                "variance": 140287362.1
              },
              {
                "average": 1.000003181,
                "count": 3143188,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001783668733,
                "variance": 3.181474149e-06
              },
              {
                "average": 1.000006363,
                "count": 3143188,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0025224845,
                "variance": 6.362928054e-06
              },
              {
                "average": 0.500965262,
                "count": 3143188,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999991478,
                "variance": 0.2499991478
              },
              {
                "average": 0.0004482709911,
                "count": 3143188,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02116766843,
                "variance": 0.0004480701868
              },
              {
                "average": 1.300752294,
                "count": 3143188,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4605133061,
                "variance": 0.2120725051
              },
              {
                "average": -0.5971011462,
                "count": 3143188,
                "maximum": 16.33200073,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.3970828,
                "variance": 108.0993307
              },
              {
                "average": 0.4803941094,
                "count": 3143188,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996155407,
                "variance": 0.2496156885
              },
              {
                "average": 409.8778139,
                "count": 3143188,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9298941992,
                "variance": 0.8647032217
              },
              {
                "average": 220417250,
                "count": 3143188,
                "maximum": 220418372.5,
                "minimum": 220416116.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 532.1207961,
                "variance": 283152.5417
              },
              {
                "average": 0.4803941094,
                "count": 3143188,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996155407,
                "variance": 0.2496156885
              },
              {
                "average": 0,
                "count": 3143188,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3143188,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3143188,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2295933301,
                "count": 3143188,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4205713841,
                "variance": 0.1768802891
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99755.48057,
              2368095.343,
              5.949544308,
              -99259.58057,
              2368568.863,
              16.16954431
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99755.48057289419,
                    2368095.3433033116,
                    5.949544308415372
                  ],
                  [
                    -99755.48057289419,
                    2368568.863303311,
                    5.949544308415372
                  ],
                  [
                    -99259.58057289419,
                    2368568.863303311,
                    16.16954430841537
                  ],
                  [
                    -99259.58057289419,
                    2368095.3433033116,
                    16.16954430841537
                  ],
                  [
                    -99755.48057289419,
                    2368095.3433033116,
                    5.949544308415372
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:12+00:00",
            "end_time": "2018-09-08T04:28:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1830.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82223043395769,
              71.26009649734709,
              1.960816824648579
            ],
            [
              -156.8227779275186,
              71.26444341502757,
              1.960816824648579
            ],
            [
              -156.80930318869062,
              71.26463643406908,
              12.08081682464858
            ],
            [
              -156.8087583023789,
              71.26028947334287,
              12.08081682464858
            ],
            [
              -156.82223043395769,
              71.26009649734709,
              1.960816824648579
            ]
          ]
        ]
      },
      "bbox": [
        -156.8227779,
        71.2600965,
        1.960816825,
        -156.8087583,
        71.26463643,
        12.08081682
      ],
      "properties": {
        "datetime": "2018-09-08T05:04:47Z",
        "pc:count": 3122635,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103485.651,
            "count": 3122635,
            "maximum": -103226.866,
            "minimum": -103722.586,
            "name": "X",
            "position": 0,
            "stddev": 132.0011297,
            "variance": 17424.29824
          },
          {
            "average": 2364997.302,
            "count": 3122635,
            "maximum": 2365236.036,
            "minimum": 2364762.356,
            "name": "Y",
            "position": 1,
            "stddev": 124.9416775,
            "variance": 15610.42278
          },
          {
            "average": 8.660314697,
            "count": 3122635,
            "maximum": 12.08081682,
            "minimum": 1.960816825,
            "name": "Z",
            "position": 2,
            "stddev": 2.055257545,
            "variance": 4.224083577
          },
          {
            "average": 46886.46935,
            "count": 3122635,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 6910.869222,
            "variance": 47760113.4
          },
          {
            "average": 1.00000032,
            "count": 3122635,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005658996019,
            "variance": 3.202423594e-07
          },
          {
            "average": 1.00000064,
            "count": 3122635,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008003027638,
            "variance": 6.404845137e-07
          },
          {
            "average": 0.5031737619,
            "count": 3122635,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999900072,
            "variance": 0.2499900073
          },
          {
            "average": 0.0004118316742,
            "count": 3122635,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02028946034,
            "variance": 0.0004116622007
          },
          {
            "average": 1.33328423,
            "count": 3122635,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7688341984,
            "variance": 0.5911060247
          },
          {
            "average": 0.06408506432,
            "count": 3122635,
            "maximum": 16.47599983,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53787256,
            "variance": 111.046758
          },
          {
            "average": 0.5185620478,
            "count": 3122635,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996554116,
            "variance": 0.2496555303
          },
          {
            "average": 410.1880293,
            "count": 3122635,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9196380407,
            "variance": 0.845734126
          },
          {
            "average": 220417448.8,
            "count": 3122635,
            "maximum": 220418287.3,
            "minimum": 220416031.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 523.2861763,
            "variance": 273828.4223
          },
          {
            "average": 0.5185620478,
            "count": 3122635,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996554116,
            "variance": 0.2496555303
          },
          {
            "average": 0,
            "count": 3122635,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3122635,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3122635,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2443811076,
            "count": 3122635,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4297197238,
            "variance": 0.184659041
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103722.586,
          2364762.356,
          1.960816825,
          -103226.866,
          2365236.036,
          12.08081682
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103722.58601941443,
                2364762.3562988667,
                1.960816824648579
              ],
              [
                -103722.58601941443,
                2365236.0362988664,
                1.960816824648579
              ],
              [
                -103226.86601941443,
                2365236.0362988664,
                12.08081682464858
              ],
              [
                -103226.86601941443,
                2364762.3562988667,
                12.08081682464858
              ],
              [
                -103722.58601941443,
                2364762.3562988667,
                1.960816824648579
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:04:47+00:00",
        "end_time": "2018-09-08T04:27:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1830.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1830.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1830.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1830.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8227779,
            71.2600965,
            1.960816825,
            -156.8087583,
            71.26463643,
            12.08081682
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82223043395769,
                  71.26009649734709,
                  1.960816824648579
                ],
                [
                  -156.8227779275186,
                  71.26444341502757,
                  1.960816824648579
                ],
                [
                  -156.80930318869062,
                  71.26463643406908,
                  12.08081682464858
                ],
                [
                  -156.8087583023789,
                  71.26028947334287,
                  12.08081682464858
                ],
                [
                  -156.82223043395769,
                  71.26009649734709,
                  1.960816824648579
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1830.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1830.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:04:47Z",
            "pc:count": 3122635,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103485.651,
                "count": 3122635,
                "maximum": -103226.866,
                "minimum": -103722.586,
                "name": "X",
                "position": 0,
                "stddev": 132.0011297,
                "variance": 17424.29824
              },
              {
                "average": 2364997.302,
                "count": 3122635,
                "maximum": 2365236.036,
                "minimum": 2364762.356,
                "name": "Y",
                "position": 1,
                "stddev": 124.9416775,
                "variance": 15610.42278
              },
              {
                "average": 8.660314697,
                "count": 3122635,
                "maximum": 12.08081682,
                "minimum": 1.960816825,
                "name": "Z",
                "position": 2,
                "stddev": 2.055257545,
                "variance": 4.224083577
              },
              {
                "average": 46886.46935,
                "count": 3122635,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 6910.869222,
                "variance": 47760113.4
              },
              {
                "average": 1.00000032,
                "count": 3122635,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005658996019,
                "variance": 3.202423594e-07
              },
              {
                "average": 1.00000064,
                "count": 3122635,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008003027638,
                "variance": 6.404845137e-07
              },
              {
                "average": 0.5031737619,
                "count": 3122635,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999900072,
                "variance": 0.2499900073
              },
              {
                "average": 0.0004118316742,
                "count": 3122635,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02028946034,
                "variance": 0.0004116622007
              },
              {
                "average": 1.33328423,
                "count": 3122635,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7688341984,
                "variance": 0.5911060247
              },
              {
                "average": 0.06408506432,
                "count": 3122635,
                "maximum": 16.47599983,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53787256,
                "variance": 111.046758
              },
              {
                "average": 0.5185620478,
                "count": 3122635,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996554116,
                "variance": 0.2496555303
              },
              {
                "average": 410.1880293,
                "count": 3122635,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9196380407,
                "variance": 0.845734126
              },
              {
                "average": 220417448.8,
                "count": 3122635,
                "maximum": 220418287.3,
                "minimum": 220416031.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 523.2861763,
                "variance": 273828.4223
              },
              {
                "average": 0.5185620478,
                "count": 3122635,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996554116,
                "variance": 0.2496555303
              },
              {
                "average": 0,
                "count": 3122635,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3122635,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3122635,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2443811076,
                "count": 3122635,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4297197238,
                "variance": 0.184659041
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103722.586,
              2364762.356,
              1.960816825,
              -103226.866,
              2365236.036,
              12.08081682
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103722.58601941443,
                    2364762.3562988667,
                    1.960816824648579
                  ],
                  [
                    -103722.58601941443,
                    2365236.0362988664,
                    1.960816824648579
                  ],
                  [
                    -103226.86601941443,
                    2365236.0362988664,
                    12.08081682464858
                  ],
                  [
                    -103226.86601941443,
                    2364762.3562988667,
                    12.08081682464858
                  ],
                  [
                    -103722.58601941443,
                    2364762.3562988667,
                    1.960816824648579
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:04:47+00:00",
            "end_time": "2018-09-08T04:27:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2021.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66818782612108,
              71.2754644872296,
              5.757315183973406
            ],
            [
              -156.66870582991575,
              71.27981245475335,
              5.757315183973406
            ],
            [
              -156.65521457610885,
              71.27999501836973,
              13.777315183973405
            ],
            [
              -156.6546991854106,
              71.27564701008596,
              13.777315183973405
            ],
            [
              -156.66818782612108,
              71.2754644872296,
              5.757315183973406
            ]
          ]
        ]
      },
      "bbox": [
        -156.6687058,
        71.27546449,
        5.757315184,
        -156.6546992,
        71.27999502,
        13.77731518
      ],
      "properties": {
        "datetime": "2018-09-11T18:01:05Z",
        "pc:count": 3779870,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97757.65873,
            "count": 3779870,
            "maximum": -97501.20773,
            "minimum": -97997.14773,
            "name": "X",
            "position": 0,
            "stddev": 134.5056521,
            "variance": 18091.77045
          },
          {
            "average": 2366427.485,
            "count": 3779870,
            "maximum": 2366673.743,
            "minimum": 2366200.043,
            "name": "Y",
            "position": 1,
            "stddev": 128.9200385,
            "variance": 16620.37632
          },
          {
            "average": 5.952342632,
            "count": 3779870,
            "maximum": 13.77731518,
            "minimum": 5.757315184,
            "name": "Z",
            "position": 2,
            "stddev": 0.05597491395,
            "variance": 0.003133190992
          },
          {
            "average": 29497.14855,
            "count": 3779870,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 9355.60048,
            "variance": 87527260.34
          },
          {
            "average": 1.000005291,
            "count": 3779870,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002300252305,
            "variance": 5.291160666e-06
          },
          {
            "average": 1.000010847,
            "count": 3779870,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003293450941,
            "variance": 1.08468191e-05
          },
          {
            "average": 0.4972205393,
            "count": 3779870,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999923407,
            "variance": 0.2499923407
          },
          {
            "average": 0.0004529256297,
            "count": 3779870,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02127723215,
            "variance": 0.0004527206079
          },
          {
            "average": 1.252351007,
            "count": 3779870,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4346758003,
            "variance": 0.1889430514
          },
          {
            "average": 3.295177207,
            "count": 3779870,
            "maximum": 20.66399956,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50926915,
            "variance": 110.4447382
          },
          {
            "average": 0.51772389,
            "count": 3779870,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996858311,
            "variance": 0.2496859298
          },
          {
            "average": 426.8998976,
            "count": 3779870,
            "maximum": 460,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.04685097,
            "variance": 325.6888299
          },
          {
            "average": 220492423.1,
            "count": 3779870,
            "maximum": 220724065.9,
            "minimum": 220420085.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128536.6078,
            "variance": 16521659560.0
          },
          {
            "average": 0.51772389,
            "count": 3779870,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996858311,
            "variance": 0.2496859298
          },
          {
            "average": 0,
            "count": 3779870,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3779870,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3779870,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2332389738,
            "count": 3779870,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4228931333,
            "variance": 0.1788386022
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97997.14773,
          2366200.043,
          5.757315184,
          -97501.20773,
          2366673.743,
          13.77731518
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97997.14772534242,
                2366200.043282933,
                5.757315183973406
              ],
              [
                -97997.14772534242,
                2366673.7432829333,
                5.757315183973406
              ],
              [
                -97501.20772534242,
                2366673.7432829333,
                13.777315183973405
              ],
              [
                -97501.20772534242,
                2366200.043282933,
                13.777315183973405
              ],
              [
                -97997.14772534242,
                2366200.043282933,
                5.757315183973406
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:01:05+00:00",
        "end_time": "2018-09-08T05:34:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2021.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2021.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2021.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2021.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6687058,
            71.27546449,
            5.757315184,
            -156.6546992,
            71.27999502,
            13.77731518
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66818782612108,
                  71.2754644872296,
                  5.757315183973406
                ],
                [
                  -156.66870582991575,
                  71.27981245475335,
                  5.757315183973406
                ],
                [
                  -156.65521457610885,
                  71.27999501836973,
                  13.777315183973405
                ],
                [
                  -156.6546991854106,
                  71.27564701008596,
                  13.777315183973405
                ],
                [
                  -156.66818782612108,
                  71.2754644872296,
                  5.757315183973406
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2021.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2021.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:01:05Z",
            "pc:count": 3779870,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97757.65873,
                "count": 3779870,
                "maximum": -97501.20773,
                "minimum": -97997.14773,
                "name": "X",
                "position": 0,
                "stddev": 134.5056521,
                "variance": 18091.77045
              },
              {
                "average": 2366427.485,
                "count": 3779870,
                "maximum": 2366673.743,
                "minimum": 2366200.043,
                "name": "Y",
                "position": 1,
                "stddev": 128.9200385,
                "variance": 16620.37632
              },
              {
                "average": 5.952342632,
                "count": 3779870,
                "maximum": 13.77731518,
                "minimum": 5.757315184,
                "name": "Z",
                "position": 2,
                "stddev": 0.05597491395,
                "variance": 0.003133190992
              },
              {
                "average": 29497.14855,
                "count": 3779870,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 9355.60048,
                "variance": 87527260.34
              },
              {
                "average": 1.000005291,
                "count": 3779870,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002300252305,
                "variance": 5.291160666e-06
              },
              {
                "average": 1.000010847,
                "count": 3779870,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003293450941,
                "variance": 1.08468191e-05
              },
              {
                "average": 0.4972205393,
                "count": 3779870,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999923407,
                "variance": 0.2499923407
              },
              {
                "average": 0.0004529256297,
                "count": 3779870,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02127723215,
                "variance": 0.0004527206079
              },
              {
                "average": 1.252351007,
                "count": 3779870,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4346758003,
                "variance": 0.1889430514
              },
              {
                "average": 3.295177207,
                "count": 3779870,
                "maximum": 20.66399956,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50926915,
                "variance": 110.4447382
              },
              {
                "average": 0.51772389,
                "count": 3779870,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996858311,
                "variance": 0.2496859298
              },
              {
                "average": 426.8998976,
                "count": 3779870,
                "maximum": 460,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.04685097,
                "variance": 325.6888299
              },
              {
                "average": 220492423.1,
                "count": 3779870,
                "maximum": 220724065.9,
                "minimum": 220420085.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128536.6078,
                "variance": 16521659560.0
              },
              {
                "average": 0.51772389,
                "count": 3779870,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996858311,
                "variance": 0.2496859298
              },
              {
                "average": 0,
                "count": 3779870,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3779870,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3779870,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2332389738,
                "count": 3779870,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4228931333,
                "variance": 0.1788386022
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97997.14773,
              2366200.043,
              5.757315184,
              -97501.20773,
              2366673.743,
              13.77731518
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97997.14772534242,
                    2366200.043282933,
                    5.757315183973406
                  ],
                  [
                    -97997.14772534242,
                    2366673.7432829333,
                    5.757315183973406
                  ],
                  [
                    -97501.20772534242,
                    2366673.7432829333,
                    13.777315183973405
                  ],
                  [
                    -97501.20772534242,
                    2366200.043282933,
                    13.777315183973405
                  ],
                  [
                    -97997.14772534242,
                    2366200.043282933,
                    5.757315183973406
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:01:05+00:00",
            "end_time": "2018-09-08T05:34:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2152.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.667058673542,
              71.29185194966948,
              4.350526809752687
            ],
            [
              -156.66757677152418,
              71.29619984980856,
              4.350526809752687
            ],
            [
              -156.6540805357663,
              71.29638228979437,
              11.570526809752687
            ],
            [
              -156.65356505343215,
              71.29203434888495,
              11.570526809752687
            ],
            [
              -156.667058673542,
              71.29185194966948,
              4.350526809752687
            ]
          ]
        ]
      },
      "bbox": [
        -156.6675768,
        71.29185195,
        4.35052681,
        -156.6535651,
        71.29638229,
        11.57052681
      ],
      "properties": {
        "datetime": "2018-09-11T17:49:20Z",
        "pc:count": 2772142,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97626.85859,
            "count": 2772142,
            "maximum": -97388.31826,
            "minimum": -97884.07826,
            "name": "X",
            "position": 0,
            "stddev": 135.6766076,
            "variance": 18408.14186
          },
          {
            "average": 2368227.594,
            "count": 2772142,
            "maximum": 2368454.438,
            "minimum": 2367980.798,
            "name": "Y",
            "position": 1,
            "stddev": 129.7156155,
            "variance": 16826.14089
          },
          {
            "average": 6.342251978,
            "count": 2772142,
            "maximum": 11.57052681,
            "minimum": 4.35052681,
            "name": "Z",
            "position": 2,
            "stddev": 0.7869819819,
            "variance": 0.6193406398
          },
          {
            "average": 39566.15362,
            "count": 2772142,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12591.29732,
            "variance": 158540768.3
          },
          {
            "average": 1.001360681,
            "count": 2772142,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03703803516,
            "variance": 0.001371816049
          },
          {
            "average": 1.00272064,
            "count": 2772142,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05246139539,
            "variance": 0.002752198007
          },
          {
            "average": 0.4995086832,
            "count": 2772142,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998488,
            "variance": 0.2499998488
          },
          {
            "average": 0.0004310745986,
            "count": 2772142,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02075786426,
            "variance": 0.0004308889288
          },
          {
            "average": 1.336652668,
            "count": 2772142,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4809875956,
            "variance": 0.2313490672
          },
          {
            "average": -0.5679719785,
            "count": 2772142,
            "maximum": 16.41600037,
            "minimum": -19.3920002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.28829801,
            "variance": 105.8490759
          },
          {
            "average": 0.4686148834,
            "count": 2772142,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990140923,
            "variance": 0.2490150643
          },
          {
            "average": 413.2661317,
            "count": 2772142,
            "maximum": 457,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.967909873,
            "variance": 0.9368495222
          },
          {
            "average": 220419108,
            "count": 2772142,
            "maximum": 220723360.7,
            "minimum": 220417896.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1506.208839,
            "variance": 2268665.068
          },
          {
            "average": 0.4686148834,
            "count": 2772142,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990140923,
            "variance": 0.2490150643
          },
          {
            "average": 0,
            "count": 2772142,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2772142,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2772142,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2256450066,
            "count": 2772142,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4180064601,
            "variance": 0.1747294006
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97884.07826,
          2367980.798,
          4.35052681,
          -97388.31826,
          2368454.438,
          11.57052681
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97884.07826426228,
                2367980.7980617355,
                4.350526809752687
              ],
              [
                -97884.07826426228,
                2368454.438061735,
                4.350526809752687
              ],
              [
                -97388.31826426227,
                2368454.438061735,
                11.570526809752687
              ],
              [
                -97388.31826426227,
                2367980.7980617355,
                11.570526809752687
              ],
              [
                -97884.07826426228,
                2367980.7980617355,
                4.350526809752687
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:49:20+00:00",
        "end_time": "2018-09-08T04:58:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2152.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2152.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2152.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2152.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6675768,
            71.29185195,
            4.35052681,
            -156.6535651,
            71.29638229,
            11.57052681
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.667058673542,
                  71.29185194966948,
                  4.350526809752687
                ],
                [
                  -156.66757677152418,
                  71.29619984980856,
                  4.350526809752687
                ],
                [
                  -156.6540805357663,
                  71.29638228979437,
                  11.570526809752687
                ],
                [
                  -156.65356505343215,
                  71.29203434888495,
                  11.570526809752687
                ],
                [
                  -156.667058673542,
                  71.29185194966948,
                  4.350526809752687
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2152.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2152.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:49:20Z",
            "pc:count": 2772142,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97626.85859,
                "count": 2772142,
                "maximum": -97388.31826,
                "minimum": -97884.07826,
                "name": "X",
                "position": 0,
                "stddev": 135.6766076,
                "variance": 18408.14186
              },
              {
                "average": 2368227.594,
                "count": 2772142,
                "maximum": 2368454.438,
                "minimum": 2367980.798,
                "name": "Y",
                "position": 1,
                "stddev": 129.7156155,
                "variance": 16826.14089
              },
              {
                "average": 6.342251978,
                "count": 2772142,
                "maximum": 11.57052681,
                "minimum": 4.35052681,
                "name": "Z",
                "position": 2,
                "stddev": 0.7869819819,
                "variance": 0.6193406398
              },
              {
                "average": 39566.15362,
                "count": 2772142,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12591.29732,
                "variance": 158540768.3
              },
              {
                "average": 1.001360681,
                "count": 2772142,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03703803516,
                "variance": 0.001371816049
              },
              {
                "average": 1.00272064,
                "count": 2772142,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05246139539,
                "variance": 0.002752198007
              },
              {
                "average": 0.4995086832,
                "count": 2772142,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998488,
                "variance": 0.2499998488
              },
              {
                "average": 0.0004310745986,
                "count": 2772142,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02075786426,
                "variance": 0.0004308889288
              },
              {
                "average": 1.336652668,
                "count": 2772142,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4809875956,
                "variance": 0.2313490672
              },
              {
                "average": -0.5679719785,
                "count": 2772142,
                "maximum": 16.41600037,
                "minimum": -19.3920002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.28829801,
                "variance": 105.8490759
              },
              {
                "average": 0.4686148834,
                "count": 2772142,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990140923,
                "variance": 0.2490150643
              },
              {
                "average": 413.2661317,
                "count": 2772142,
                "maximum": 457,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.967909873,
                "variance": 0.9368495222
              },
              {
                "average": 220419108,
                "count": 2772142,
                "maximum": 220723360.7,
                "minimum": 220417896.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1506.208839,
                "variance": 2268665.068
              },
              {
                "average": 0.4686148834,
                "count": 2772142,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990140923,
                "variance": 0.2490150643
              },
              {
                "average": 0,
                "count": 2772142,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2772142,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2772142,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2256450066,
                "count": 2772142,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4180064601,
                "variance": 0.1747294006
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97884.07826,
              2367980.798,
              4.35052681,
              -97388.31826,
              2368454.438,
              11.57052681
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97884.07826426228,
                    2367980.7980617355,
                    4.350526809752687
                  ],
                  [
                    -97884.07826426228,
                    2368454.438061735,
                    4.350526809752687
                  ],
                  [
                    -97388.31826426227,
                    2368454.438061735,
                    11.570526809752687
                  ],
                  [
                    -97388.31826426227,
                    2367980.7980617355,
                    11.570526809752687
                  ],
                  [
                    -97884.07826426228,
                    2367980.7980617355,
                    4.350526809752687
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:49:20+00:00",
            "end_time": "2018-09-08T04:58:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1931.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.83448172409229,
              71.2683703835046,
              9.170163602730117
            ],
            [
              -156.83503179586558,
              71.2727175086177,
              9.170163602730117
            ],
            [
              -156.82155490748914,
              71.27291133866406,
              28.630163602730118
            ],
            [
              -156.8210074442819,
              71.26856417030163,
              28.630163602730118
            ],
            [
              -156.83448172409229,
              71.2683703835046,
              9.170163602730117
            ]
          ]
        ]
      },
      "bbox": [
        -156.8350318,
        71.26837038,
        9.170163603,
        -156.8210074,
        71.27291134,
        28.6301636
      ],
      "properties": {
        "datetime": "2018-09-08T04:41:30Z",
        "pc:count": 3080851,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103891.2942,
            "count": 3080851,
            "maximum": -103638.5184,
            "minimum": -104134.1384,
            "name": "X",
            "position": 0,
            "stddev": 134.4359029,
            "variance": 18073.01199
          },
          {
            "average": 2365915.746,
            "count": 3080851,
            "maximum": 2366155.164,
            "minimum": 2365681.484,
            "name": "Y",
            "position": 1,
            "stddev": 129.5813255,
            "variance": 16791.31992
          },
          {
            "average": 9.703056355,
            "count": 3080851,
            "maximum": 28.6301636,
            "minimum": 9.170163603,
            "name": "Z",
            "position": 2,
            "stddev": 0.1194437818,
            "variance": 0.01426681701
          },
          {
            "average": 31501.09712,
            "count": 3080851,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12165.22374,
            "variance": 147992668.6
          },
          {
            "average": 1.000008115,
            "count": 3080851,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002848609808,
            "variance": 8.114577839e-06
          },
          {
            "average": 1.000016229,
            "count": 3080851,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004028526279,
            "variance": 1.622902398e-05
          },
          {
            "average": 0.4973992575,
            "count": 3080851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999933172,
            "variance": 0.2499933173
          },
          {
            "average": 0.0004151450362,
            "count": 3080851,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02037088181,
            "variance": 0.0004149728255
          },
          {
            "average": 1.778308006,
            "count": 3080851,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.975886934,
            "variance": 3.904129175
          },
          {
            "average": 0.3648006507,
            "count": 3080851,
            "maximum": 16.49399948,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.990531681,
            "variance": 99.81072327
          },
          {
            "average": 0.4583087595,
            "count": 3080851,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4982588896,
            "variance": 0.248261921
          },
          {
            "average": 407.4928323,
            "count": 3080851,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9135067209,
            "variance": 0.8344945291
          },
          {
            "average": 220415885.7,
            "count": 3080851,
            "maximum": 220416890.4,
            "minimum": 220414908.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 548.3572964,
            "variance": 300695.7246
          },
          {
            "average": 0.4583087595,
            "count": 3080851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4982588896,
            "variance": 0.248261921
          },
          {
            "average": 0,
            "count": 3080851,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3080851,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3080851,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1987470345,
            "count": 3080851,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3990572672,
            "variance": 0.1592467025
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104134.1384,
          2365681.484,
          9.170163603,
          -103638.5184,
          2366155.164,
          28.6301636
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104134.13838743772,
                2365681.4843327412,
                9.170163602730117
              ],
              [
                -104134.13838743772,
                2366155.164332741,
                9.170163602730117
              ],
              [
                -103638.51838743773,
                2366155.164332741,
                28.630163602730118
              ],
              [
                -103638.51838743773,
                2365681.4843327412,
                28.630163602730118
              ],
              [
                -104134.13838743772,
                2365681.4843327412,
                9.170163602730117
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:41:30+00:00",
        "end_time": "2018-09-08T04:08:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1931.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1931.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1931.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1931.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8350318,
            71.26837038,
            9.170163603,
            -156.8210074,
            71.27291134,
            28.6301636
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.83448172409229,
                  71.2683703835046,
                  9.170163602730117
                ],
                [
                  -156.83503179586558,
                  71.2727175086177,
                  9.170163602730117
                ],
                [
                  -156.82155490748914,
                  71.27291133866406,
                  28.630163602730118
                ],
                [
                  -156.8210074442819,
                  71.26856417030163,
                  28.630163602730118
                ],
                [
                  -156.83448172409229,
                  71.2683703835046,
                  9.170163602730117
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1931.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1931.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:41:30Z",
            "pc:count": 3080851,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103891.2942,
                "count": 3080851,
                "maximum": -103638.5184,
                "minimum": -104134.1384,
                "name": "X",
                "position": 0,
                "stddev": 134.4359029,
                "variance": 18073.01199
              },
              {
                "average": 2365915.746,
                "count": 3080851,
                "maximum": 2366155.164,
                "minimum": 2365681.484,
                "name": "Y",
                "position": 1,
                "stddev": 129.5813255,
                "variance": 16791.31992
              },
              {
                "average": 9.703056355,
                "count": 3080851,
                "maximum": 28.6301636,
                "minimum": 9.170163603,
                "name": "Z",
                "position": 2,
                "stddev": 0.1194437818,
                "variance": 0.01426681701
              },
              {
                "average": 31501.09712,
                "count": 3080851,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12165.22374,
                "variance": 147992668.6
              },
              {
                "average": 1.000008115,
                "count": 3080851,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002848609808,
                "variance": 8.114577839e-06
              },
              {
                "average": 1.000016229,
                "count": 3080851,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004028526279,
                "variance": 1.622902398e-05
              },
              {
                "average": 0.4973992575,
                "count": 3080851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999933172,
                "variance": 0.2499933173
              },
              {
                "average": 0.0004151450362,
                "count": 3080851,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02037088181,
                "variance": 0.0004149728255
              },
              {
                "average": 1.778308006,
                "count": 3080851,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.975886934,
                "variance": 3.904129175
              },
              {
                "average": 0.3648006507,
                "count": 3080851,
                "maximum": 16.49399948,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.990531681,
                "variance": 99.81072327
              },
              {
                "average": 0.4583087595,
                "count": 3080851,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4982588896,
                "variance": 0.248261921
              },
              {
                "average": 407.4928323,
                "count": 3080851,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9135067209,
                "variance": 0.8344945291
              },
              {
                "average": 220415885.7,
                "count": 3080851,
                "maximum": 220416890.4,
                "minimum": 220414908.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 548.3572964,
                "variance": 300695.7246
              },
              {
                "average": 0.4583087595,
                "count": 3080851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4982588896,
                "variance": 0.248261921
              },
              {
                "average": 0,
                "count": 3080851,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3080851,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3080851,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1987470345,
                "count": 3080851,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3990572672,
                "variance": 0.1592467025
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104134.1384,
              2365681.484,
              9.170163603,
              -103638.5184,
              2366155.164,
              28.6301636
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104134.13838743772,
                    2365681.4843327412,
                    9.170163602730117
                  ],
                  [
                    -104134.13838743772,
                    2366155.164332741,
                    9.170163602730117
                  ],
                  [
                    -103638.51838743773,
                    2366155.164332741,
                    28.630163602730118
                  ],
                  [
                    -103638.51838743773,
                    2365681.4843327412,
                    28.630163602730118
                  ],
                  [
                    -104134.13838743772,
                    2365681.4843327412,
                    9.170163602730117
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:41:30+00:00",
            "end_time": "2018-09-08T04:08:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2088.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.68038275548227,
              71.28374837567272,
              5.488272011544854
            ],
            [
              -156.68090323003503,
              71.28809581934362,
              5.488272011544854
            ],
            [
              -156.6674103523748,
              71.28827918484147,
              14.948272011544855
            ],
            [
              -156.6668924916998,
              71.28393170021688,
              14.948272011544855
            ],
            [
              -156.68038275548227,
              71.28374837567272,
              5.488272011544854
            ]
          ]
        ]
      },
      "bbox": [
        -156.6809032,
        71.28374838,
        5.488272012,
        -156.6668925,
        71.28827918,
        14.94827201
      ],
      "properties": {
        "datetime": "2018-09-08T05:42:34Z",
        "pc:count": 3136260,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98159.81074,
            "count": 3136260,
            "maximum": -97912.59424,
            "minimum": -98408.41424,
            "name": "X",
            "position": 0,
            "stddev": 134.5007638,
            "variance": 18090.45546
          },
          {
            "average": 2367357.917,
            "count": 3136260,
            "maximum": 2367592.733,
            "minimum": 2367119.113,
            "name": "Y",
            "position": 1,
            "stddev": 126.9560685,
            "variance": 16117.84332
          },
          {
            "average": 6.27911705,
            "count": 3136260,
            "maximum": 14.94827201,
            "minimum": 5.488272012,
            "name": "Z",
            "position": 2,
            "stddev": 0.256200086,
            "variance": 0.06563848408
          },
          {
            "average": 39080.50587,
            "count": 3136260,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10737.3975,
            "variance": 115291705.1
          },
          {
            "average": 1.000298126,
            "count": 3136260,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01742918045,
            "variance": 0.0003037763311
          },
          {
            "average": 1.000597208,
            "count": 3136260,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02476755813,
            "variance": 0.0006134319357
          },
          {
            "average": 0.5031014648,
            "count": 3136260,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999904605,
            "variance": 0.2499904606
          },
          {
            "average": 0.0003759254654,
            "count": 3136260,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0193851558,
            "variance": 0.0003757842652
          },
          {
            "average": 1.302507764,
            "count": 3136260,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4634701773,
            "variance": 0.2148046052
          },
          {
            "average": 0.5204735663,
            "count": 3136260,
            "maximum": 16.4279995,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44045423,
            "variance": 109.0030844
          },
          {
            "average": 0.5183352146,
            "count": 3136260,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996637865,
            "variance": 0.2496638995
          },
          {
            "average": 414.200146,
            "count": 3136260,
            "maximum": 416,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9289423767,
            "variance": 0.8629339392
          },
          {
            "average": 220419621.8,
            "count": 3136260,
            "maximum": 220420554,
            "minimum": 220418375.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 497.2551647,
            "variance": 247262.6988
          },
          {
            "average": 0.5183352146,
            "count": 3136260,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996637865,
            "variance": 0.2496638995
          },
          {
            "average": 0,
            "count": 3136260,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136260,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136260,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2379681532,
            "count": 3136260,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4258396048,
            "variance": 0.1813393691
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98408.41424,
          2367119.113,
          5.488272012,
          -97912.59424,
          2367592.733,
          14.94827201
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98408.41424005444,
                2367119.1131980526,
                5.488272011544854
              ],
              [
                -98408.41424005444,
                2367592.7331980527,
                5.488272011544854
              ],
              [
                -97912.59424005443,
                2367592.7331980527,
                14.948272011544855
              ],
              [
                -97912.59424005443,
                2367119.1131980526,
                14.948272011544855
              ],
              [
                -98408.41424005444,
                2367119.1131980526,
                5.488272011544854
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:42:34+00:00",
        "end_time": "2018-09-08T05:06:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2088.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2088.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2088.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2088.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6809032,
            71.28374838,
            5.488272012,
            -156.6668925,
            71.28827918,
            14.94827201
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.68038275548227,
                  71.28374837567272,
                  5.488272011544854
                ],
                [
                  -156.68090323003503,
                  71.28809581934362,
                  5.488272011544854
                ],
                [
                  -156.6674103523748,
                  71.28827918484147,
                  14.948272011544855
                ],
                [
                  -156.6668924916998,
                  71.28393170021688,
                  14.948272011544855
                ],
                [
                  -156.68038275548227,
                  71.28374837567272,
                  5.488272011544854
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2088.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2088.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:42:34Z",
            "pc:count": 3136260,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98159.81074,
                "count": 3136260,
                "maximum": -97912.59424,
                "minimum": -98408.41424,
                "name": "X",
                "position": 0,
                "stddev": 134.5007638,
                "variance": 18090.45546
              },
              {
                "average": 2367357.917,
                "count": 3136260,
                "maximum": 2367592.733,
                "minimum": 2367119.113,
                "name": "Y",
                "position": 1,
                "stddev": 126.9560685,
                "variance": 16117.84332
              },
              {
                "average": 6.27911705,
                "count": 3136260,
                "maximum": 14.94827201,
                "minimum": 5.488272012,
                "name": "Z",
                "position": 2,
                "stddev": 0.256200086,
                "variance": 0.06563848408
              },
              {
                "average": 39080.50587,
                "count": 3136260,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10737.3975,
                "variance": 115291705.1
              },
              {
                "average": 1.000298126,
                "count": 3136260,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01742918045,
                "variance": 0.0003037763311
              },
              {
                "average": 1.000597208,
                "count": 3136260,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02476755813,
                "variance": 0.0006134319357
              },
              {
                "average": 0.5031014648,
                "count": 3136260,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999904605,
                "variance": 0.2499904606
              },
              {
                "average": 0.0003759254654,
                "count": 3136260,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0193851558,
                "variance": 0.0003757842652
              },
              {
                "average": 1.302507764,
                "count": 3136260,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4634701773,
                "variance": 0.2148046052
              },
              {
                "average": 0.5204735663,
                "count": 3136260,
                "maximum": 16.4279995,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44045423,
                "variance": 109.0030844
              },
              {
                "average": 0.5183352146,
                "count": 3136260,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996637865,
                "variance": 0.2496638995
              },
              {
                "average": 414.200146,
                "count": 3136260,
                "maximum": 416,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9289423767,
                "variance": 0.8629339392
              },
              {
                "average": 220419621.8,
                "count": 3136260,
                "maximum": 220420554,
                "minimum": 220418375.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 497.2551647,
                "variance": 247262.6988
              },
              {
                "average": 0.5183352146,
                "count": 3136260,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996637865,
                "variance": 0.2496638995
              },
              {
                "average": 0,
                "count": 3136260,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136260,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136260,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2379681532,
                "count": 3136260,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4258396048,
                "variance": 0.1813393691
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98408.41424,
              2367119.113,
              5.488272012,
              -97912.59424,
              2367592.733,
              14.94827201
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98408.41424005444,
                    2367119.1131980526,
                    5.488272011544854
                  ],
                  [
                    -98408.41424005444,
                    2367592.7331980527,
                    5.488272011544854
                  ],
                  [
                    -97912.59424005443,
                    2367592.7331980527,
                    14.948272011544855
                  ],
                  [
                    -97912.59424005443,
                    2367119.1131980526,
                    14.948272011544855
                  ],
                  [
                    -98408.41424005444,
                    2367119.1131980526,
                    5.488272011544854
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:42:34+00:00",
            "end_time": "2018-09-08T05:06:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1727.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79724468507868,
              71.2517411932374,
              8.048797308879992
            ],
            [
              -156.7977872010252,
              71.25608848716807,
              8.048797308879992
            ],
            [
              -156.78432107221204,
              71.25627972983435,
              10.428797308879991
            ],
            [
              -156.7837811613325,
              71.25193239327092,
              10.428797308879991
            ],
            [
              -156.79724468507868,
              71.2517411932374,
              8.048797308879992
            ]
          ]
        ]
      },
      "bbox": [
        -156.7977872,
        71.25174119,
        8.048797309,
        -156.7837812,
        71.25627973,
        10.42879731
      ],
      "properties": {
        "datetime": "2018-09-08T05:40:58Z",
        "pc:count": 3112344,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102595.1019,
            "count": 3112344,
            "maximum": -102347.5804,
            "minimum": -102843.1604,
            "name": "X",
            "position": 0,
            "stddev": 133.7743441,
            "variance": 17895.57513
          },
          {
            "average": 2364048.743,
            "count": 3112344,
            "maximum": 2364288.365,
            "minimum": 2363814.625,
            "name": "Y",
            "position": 1,
            "stddev": 129.4323157,
            "variance": 16752.72435
          },
          {
            "average": 9.355990974,
            "count": 3112344,
            "maximum": 10.42879731,
            "minimum": 8.048797309,
            "name": "Z",
            "position": 2,
            "stddev": 0.4789659451,
            "variance": 0.2294083766
          },
          {
            "average": 39586.26866,
            "count": 3112344,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10134.19693,
            "variance": 102701947.5
          },
          {
            "average": 1,
            "count": 3112344,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3112344,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4987491743,
            "count": 3112344,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999985158,
            "variance": 0.2499985158
          },
          {
            "average": 0.0004151212077,
            "count": 3112344,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02037029738,
            "variance": 0.0004149490154
          },
          {
            "average": 1.316440599,
            "count": 3112344,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4651078304,
            "variance": 0.2163252939
          },
          {
            "average": -0.2838614175,
            "count": 3112344,
            "maximum": 16.32600021,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.1785629,
            "variance": 103.6031428
          },
          {
            "average": 0.4621410744,
            "count": 3112344,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985647216,
            "variance": 0.2485667816
          },
          {
            "average": 413.6717329,
            "count": 3112344,
            "maximum": 416,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9306110758,
            "variance": 0.8660369744
          },
          {
            "average": 220419336.8,
            "count": 3112344,
            "maximum": 220420458.5,
            "minimum": 220418278.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 539.363959,
            "variance": 290913.4803
          },
          {
            "average": 0.4621410744,
            "count": 3112344,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985647216,
            "variance": 0.2485667816
          },
          {
            "average": 0,
            "count": 3112344,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3112344,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3112344,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2137549705,
            "count": 3112344,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4099558965,
            "variance": 0.1680638371
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102843.1604,
          2363814.625,
          8.048797309,
          -102347.5804,
          2364288.365,
          10.42879731
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102843.16039155984,
                2363814.6252182513,
                8.048797308879992
              ],
              [
                -102843.16039155984,
                2364288.3652182515,
                8.048797308879992
              ],
              [
                -102347.58039155985,
                2364288.3652182515,
                10.428797308879991
              ],
              [
                -102347.58039155985,
                2363814.6252182513,
                10.428797308879991
              ],
              [
                -102843.16039155984,
                2363814.6252182513,
                8.048797308879992
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:40:58+00:00",
        "end_time": "2018-09-08T05:04:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1727.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1727.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1727.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1727.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7977872,
            71.25174119,
            8.048797309,
            -156.7837812,
            71.25627973,
            10.42879731
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79724468507868,
                  71.2517411932374,
                  8.048797308879992
                ],
                [
                  -156.7977872010252,
                  71.25608848716807,
                  8.048797308879992
                ],
                [
                  -156.78432107221204,
                  71.25627972983435,
                  10.428797308879991
                ],
                [
                  -156.7837811613325,
                  71.25193239327092,
                  10.428797308879991
                ],
                [
                  -156.79724468507868,
                  71.2517411932374,
                  8.048797308879992
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1727.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1727.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:40:58Z",
            "pc:count": 3112344,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102595.1019,
                "count": 3112344,
                "maximum": -102347.5804,
                "minimum": -102843.1604,
                "name": "X",
                "position": 0,
                "stddev": 133.7743441,
                "variance": 17895.57513
              },
              {
                "average": 2364048.743,
                "count": 3112344,
                "maximum": 2364288.365,
                "minimum": 2363814.625,
                "name": "Y",
                "position": 1,
                "stddev": 129.4323157,
                "variance": 16752.72435
              },
              {
                "average": 9.355990974,
                "count": 3112344,
                "maximum": 10.42879731,
                "minimum": 8.048797309,
                "name": "Z",
                "position": 2,
                "stddev": 0.4789659451,
                "variance": 0.2294083766
              },
              {
                "average": 39586.26866,
                "count": 3112344,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10134.19693,
                "variance": 102701947.5
              },
              {
                "average": 1,
                "count": 3112344,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3112344,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4987491743,
                "count": 3112344,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999985158,
                "variance": 0.2499985158
              },
              {
                "average": 0.0004151212077,
                "count": 3112344,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02037029738,
                "variance": 0.0004149490154
              },
              {
                "average": 1.316440599,
                "count": 3112344,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4651078304,
                "variance": 0.2163252939
              },
              {
                "average": -0.2838614175,
                "count": 3112344,
                "maximum": 16.32600021,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.1785629,
                "variance": 103.6031428
              },
              {
                "average": 0.4621410744,
                "count": 3112344,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985647216,
                "variance": 0.2485667816
              },
              {
                "average": 413.6717329,
                "count": 3112344,
                "maximum": 416,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9306110758,
                "variance": 0.8660369744
              },
              {
                "average": 220419336.8,
                "count": 3112344,
                "maximum": 220420458.5,
                "minimum": 220418278.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 539.363959,
                "variance": 290913.4803
              },
              {
                "average": 0.4621410744,
                "count": 3112344,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985647216,
                "variance": 0.2485667816
              },
              {
                "average": 0,
                "count": 3112344,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3112344,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3112344,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2137549705,
                "count": 3112344,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4099558965,
                "variance": 0.1680638371
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102843.1604,
              2363814.625,
              8.048797309,
              -102347.5804,
              2364288.365,
              10.42879731
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102843.16039155984,
                    2363814.6252182513,
                    8.048797308879992
                  ],
                  [
                    -102843.16039155984,
                    2364288.3652182515,
                    8.048797308879992
                  ],
                  [
                    -102347.58039155985,
                    2364288.3652182515,
                    10.428797308879991
                  ],
                  [
                    -102347.58039155985,
                    2363814.6252182513,
                    10.428797308879991
                  ],
                  [
                    -102843.16039155984,
                    2363814.6252182513,
                    8.048797308879992
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:40:58+00:00",
            "end_time": "2018-09-08T05:04:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1977.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7832295636541,
              71.2721451754821,
              10.868004311882737
            ],
            [
              -156.7837697176305,
              71.27649200228922,
              10.868004311882737
            ],
            [
              -156.77028794531262,
              71.27668235666806,
              17.56800431188274
            ],
            [
              -156.769750401212,
              71.27233548738084,
              17.56800431188274
            ],
            [
              -156.7832295636541,
              71.2721451754821,
              10.868004311882737
            ]
          ]
        ]
      },
      "bbox": [
        -156.7837697,
        71.27214518,
        10.86800431,
        -156.7697504,
        71.27668236,
        17.56800431
      ],
      "properties": {
        "datetime": "2018-09-08T05:05:19Z",
        "pc:count": 3308970,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101989.7024,
            "count": 3308970,
            "maximum": -101739.4148,
            "minimum": -102235.1148,
            "name": "X",
            "position": 0,
            "stddev": 133.8029496,
            "variance": 17903.22932
          },
          {
            "average": 2366243.141,
            "count": 3308970,
            "maximum": 2366486.047,
            "minimum": 2366012.427,
            "name": "Y",
            "position": 1,
            "stddev": 127.5314215,
            "variance": 16264.26346
          },
          {
            "average": 13.53539786,
            "count": 3308970,
            "maximum": 17.56800431,
            "minimum": 10.86800431,
            "name": "Z",
            "position": 2,
            "stddev": 1.048316588,
            "variance": 1.098967668
          },
          {
            "average": 44213.52876,
            "count": 3308970,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 8917.35614,
            "variance": 79519240.54
          },
          {
            "average": 1.000009973,
            "count": 3308970,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003157973309,
            "variance": 9.972795422e-06
          },
          {
            "average": 1.000019946,
            "count": 3308970,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004466026414,
            "variance": 1.994539193e-05
          },
          {
            "average": 0.4992411536,
            "count": 3308970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999994997,
            "variance": 0.2499994997
          },
          {
            "average": 0.0004143283257,
            "count": 3308970,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02035084232,
            "variance": 0.0004141567829
          },
          {
            "average": 1.298942571,
            "count": 3308970,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4586072574,
            "variance": 0.2103206165
          },
          {
            "average": 1.33770757,
            "count": 3308970,
            "maximum": 16.3920002,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44584051,
            "variance": 109.115584
          },
          {
            "average": 0.505582704,
            "count": 3308970,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499968908,
            "variance": 0.249968909
          },
          {
            "average": 409.972509,
            "count": 3308970,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9353071359,
            "variance": 0.8747994385
          },
          {
            "average": 220417318.4,
            "count": 3308970,
            "maximum": 220418319.1,
            "minimum": 220416064.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 520.3073248,
            "variance": 270719.7123
          },
          {
            "average": 0.505582704,
            "count": 3308970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499968908,
            "variance": 0.249968909
          },
          {
            "average": 0,
            "count": 3308970,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3308970,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3308970,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2475815737,
            "count": 3308970,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.431607454,
            "variance": 0.1862849944
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102235.1148,
          2366012.427,
          10.86800431,
          -101739.4148,
          2366486.047,
          17.56800431
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102235.11482094627,
                2366012.4274518644,
                10.868004311882737
              ],
              [
                -102235.11482094627,
                2366486.0474518645,
                10.868004311882737
              ],
              [
                -101739.41482094626,
                2366486.0474518645,
                17.56800431188274
              ],
              [
                -101739.41482094626,
                2366012.4274518644,
                17.56800431188274
              ],
              [
                -102235.11482094627,
                2366012.4274518644,
                10.868004311882737
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:05:19+00:00",
        "end_time": "2018-09-08T04:27:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1977.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1977.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1977.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1977.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7837697,
            71.27214518,
            10.86800431,
            -156.7697504,
            71.27668236,
            17.56800431
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7832295636541,
                  71.2721451754821,
                  10.868004311882737
                ],
                [
                  -156.7837697176305,
                  71.27649200228922,
                  10.868004311882737
                ],
                [
                  -156.77028794531262,
                  71.27668235666806,
                  17.56800431188274
                ],
                [
                  -156.769750401212,
                  71.27233548738084,
                  17.56800431188274
                ],
                [
                  -156.7832295636541,
                  71.2721451754821,
                  10.868004311882737
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1977.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1977.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:05:19Z",
            "pc:count": 3308970,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101989.7024,
                "count": 3308970,
                "maximum": -101739.4148,
                "minimum": -102235.1148,
                "name": "X",
                "position": 0,
                "stddev": 133.8029496,
                "variance": 17903.22932
              },
              {
                "average": 2366243.141,
                "count": 3308970,
                "maximum": 2366486.047,
                "minimum": 2366012.427,
                "name": "Y",
                "position": 1,
                "stddev": 127.5314215,
                "variance": 16264.26346
              },
              {
                "average": 13.53539786,
                "count": 3308970,
                "maximum": 17.56800431,
                "minimum": 10.86800431,
                "name": "Z",
                "position": 2,
                "stddev": 1.048316588,
                "variance": 1.098967668
              },
              {
                "average": 44213.52876,
                "count": 3308970,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 8917.35614,
                "variance": 79519240.54
              },
              {
                "average": 1.000009973,
                "count": 3308970,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003157973309,
                "variance": 9.972795422e-06
              },
              {
                "average": 1.000019946,
                "count": 3308970,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004466026414,
                "variance": 1.994539193e-05
              },
              {
                "average": 0.4992411536,
                "count": 3308970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999994997,
                "variance": 0.2499994997
              },
              {
                "average": 0.0004143283257,
                "count": 3308970,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02035084232,
                "variance": 0.0004141567829
              },
              {
                "average": 1.298942571,
                "count": 3308970,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4586072574,
                "variance": 0.2103206165
              },
              {
                "average": 1.33770757,
                "count": 3308970,
                "maximum": 16.3920002,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44584051,
                "variance": 109.115584
              },
              {
                "average": 0.505582704,
                "count": 3308970,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499968908,
                "variance": 0.249968909
              },
              {
                "average": 409.972509,
                "count": 3308970,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9353071359,
                "variance": 0.8747994385
              },
              {
                "average": 220417318.4,
                "count": 3308970,
                "maximum": 220418319.1,
                "minimum": 220416064.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 520.3073248,
                "variance": 270719.7123
              },
              {
                "average": 0.505582704,
                "count": 3308970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499968908,
                "variance": 0.249968909
              },
              {
                "average": 0,
                "count": 3308970,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3308970,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3308970,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2475815737,
                "count": 3308970,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.431607454,
                "variance": 0.1862849944
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102235.1148,
              2366012.427,
              10.86800431,
              -101739.4148,
              2366486.047,
              17.56800431
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102235.11482094627,
                    2366012.4274518644,
                    10.868004311882737
                  ],
                  [
                    -102235.11482094627,
                    2366486.0474518645,
                    10.868004311882737
                  ],
                  [
                    -101739.41482094626,
                    2366486.0474518645,
                    17.56800431188274
                  ],
                  [
                    -101739.41482094626,
                    2366012.4274518644,
                    17.56800431188274
                  ],
                  [
                    -102235.11482094627,
                    2366012.4274518644,
                    10.868004311882737
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:05:19+00:00",
            "end_time": "2018-09-08T04:27:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1831.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8094859997583,
              71.2600161798035,
              1.947321718768393
            ],
            [
              -156.81003108956222,
              71.26436368116555,
              1.947321718768393
            ],
            [
              -156.7965573767297,
              71.26455581145176,
              193.8873217187684
            ],
            [
              -156.79601489436098,
              71.2602082672366,
              193.8873217187684
            ],
            [
              -156.8094859997583,
              71.2600161798035,
              1.947321718768393
            ]
          ]
        ]
      },
      "bbox": [
        -156.8100311,
        71.26001618,
        1.947321719,
        -156.7960149,
        71.26455581,
        193.8873217
      ],
      "properties": {
        "datetime": "2018-09-08T05:18:26Z",
        "pc:count": 2770314,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103006.2998,
            "count": 2770314,
            "maximum": -102759.1726,
            "minimum": -103254.8526,
            "name": "X",
            "position": 0,
            "stddev": 133.8615953,
            "variance": 17918.92669
          },
          {
            "average": 2364970.101,
            "count": 2770314,
            "maximum": 2365207.5,
            "minimum": 2364733.76,
            "name": "Y",
            "position": 1,
            "stddev": 129.3313911,
            "variance": 16726.60872
          },
          {
            "average": 8.409118396,
            "count": 2770314,
            "maximum": 193.8873217,
            "minimum": 1.947321719,
            "name": "Z",
            "position": 2,
            "stddev": 2.160189175,
            "variance": 4.666417271
          },
          {
            "average": 42050.19716,
            "count": 2770314,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11107.41321,
            "variance": 123374628.3
          },
          {
            "average": 1.000001083,
            "count": 2770314,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001040629114,
            "variance": 1.082908953e-06
          },
          {
            "average": 1.000002166,
            "count": 2770314,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00147167101,
            "variance": 2.165815561e-06
          },
          {
            "average": 0.499496086,
            "count": 2770314,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998363,
            "variance": 0.2499998363
          },
          {
            "average": 0.0003912913843,
            "count": 2770314,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01977721964,
            "variance": 0.0003911384165
          },
          {
            "average": 1.363126346,
            "count": 2770314,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8499335778,
            "variance": 0.7223870867
          },
          {
            "average": 1.009340952,
            "count": 2770314,
            "maximum": 16.36199951,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.34613314,
            "variance": 107.042471
          },
          {
            "average": 0.4987496002,
            "count": 2770314,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999985267,
            "variance": 0.2499985267
          },
          {
            "average": 411.0663878,
            "count": 2770314,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9144321323,
            "variance": 0.8361861245
          },
          {
            "average": 220417871.5,
            "count": 2770314,
            "maximum": 220419106.3,
            "minimum": 220416882.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 517.7843208,
            "variance": 268100.6029
          },
          {
            "average": 0.4987496002,
            "count": 2770314,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999985267,
            "variance": 0.2499985267
          },
          {
            "average": 0,
            "count": 2770314,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2770314,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2770314,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2279149584,
            "count": 2770314,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4194875369,
            "variance": 0.1759697936
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103254.8526,
          2364733.76,
          1.947321719,
          -102759.1726,
          2365207.5,
          193.8873217
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103254.85259555087,
                2364733.760072006,
                1.947321718768393
              ],
              [
                -103254.85259555087,
                2365207.500072006,
                1.947321718768393
              ],
              [
                -102759.17259555087,
                2365207.500072006,
                193.8873217187684
              ],
              [
                -102759.17259555087,
                2364733.760072006,
                193.8873217187684
              ],
              [
                -103254.85259555087,
                2364733.760072006,
                1.947321718768393
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:18:26+00:00",
        "end_time": "2018-09-08T04:41:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1831.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1831.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1831.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1831.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8100311,
            71.26001618,
            1.947321719,
            -156.7960149,
            71.26455581,
            193.8873217
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8094859997583,
                  71.2600161798035,
                  1.947321718768393
                ],
                [
                  -156.81003108956222,
                  71.26436368116555,
                  1.947321718768393
                ],
                [
                  -156.7965573767297,
                  71.26455581145176,
                  193.8873217187684
                ],
                [
                  -156.79601489436098,
                  71.2602082672366,
                  193.8873217187684
                ],
                [
                  -156.8094859997583,
                  71.2600161798035,
                  1.947321718768393
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1831.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1831.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:18:26Z",
            "pc:count": 2770314,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103006.2998,
                "count": 2770314,
                "maximum": -102759.1726,
                "minimum": -103254.8526,
                "name": "X",
                "position": 0,
                "stddev": 133.8615953,
                "variance": 17918.92669
              },
              {
                "average": 2364970.101,
                "count": 2770314,
                "maximum": 2365207.5,
                "minimum": 2364733.76,
                "name": "Y",
                "position": 1,
                "stddev": 129.3313911,
                "variance": 16726.60872
              },
              {
                "average": 8.409118396,
                "count": 2770314,
                "maximum": 193.8873217,
                "minimum": 1.947321719,
                "name": "Z",
                "position": 2,
                "stddev": 2.160189175,
                "variance": 4.666417271
              },
              {
                "average": 42050.19716,
                "count": 2770314,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11107.41321,
                "variance": 123374628.3
              },
              {
                "average": 1.000001083,
                "count": 2770314,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001040629114,
                "variance": 1.082908953e-06
              },
              {
                "average": 1.000002166,
                "count": 2770314,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00147167101,
                "variance": 2.165815561e-06
              },
              {
                "average": 0.499496086,
                "count": 2770314,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998363,
                "variance": 0.2499998363
              },
              {
                "average": 0.0003912913843,
                "count": 2770314,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01977721964,
                "variance": 0.0003911384165
              },
              {
                "average": 1.363126346,
                "count": 2770314,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8499335778,
                "variance": 0.7223870867
              },
              {
                "average": 1.009340952,
                "count": 2770314,
                "maximum": 16.36199951,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.34613314,
                "variance": 107.042471
              },
              {
                "average": 0.4987496002,
                "count": 2770314,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999985267,
                "variance": 0.2499985267
              },
              {
                "average": 411.0663878,
                "count": 2770314,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9144321323,
                "variance": 0.8361861245
              },
              {
                "average": 220417871.5,
                "count": 2770314,
                "maximum": 220419106.3,
                "minimum": 220416882.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 517.7843208,
                "variance": 268100.6029
              },
              {
                "average": 0.4987496002,
                "count": 2770314,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999985267,
                "variance": 0.2499985267
              },
              {
                "average": 0,
                "count": 2770314,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2770314,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2770314,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2279149584,
                "count": 2770314,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4194875369,
                "variance": 0.1759697936
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103254.8526,
              2364733.76,
              1.947321719,
              -102759.1726,
              2365207.5,
              193.8873217
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103254.85259555087,
                    2364733.760072006,
                    1.947321718768393
                  ],
                  [
                    -103254.85259555087,
                    2365207.500072006,
                    1.947321718768393
                  ],
                  [
                    -102759.17259555087,
                    2365207.500072006,
                    193.8873217187684
                  ],
                  [
                    -102759.17259555087,
                    2364733.760072006,
                    193.8873217187684
                  ],
                  [
                    -103254.85259555087,
                    2364733.760072006,
                    1.947321718768393
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:18:26+00:00",
            "end_time": "2018-09-08T04:41:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2156.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6160064874378,
              71.29148320800829,
              2.379464401699548
            ],
            [
              -156.6165147937055,
              71.29583233198284,
              2.379464401699548
            ],
            [
              -156.6030123792336,
              71.29601135146797,
              12.039464401699547
            ],
            [
              -156.60250669067128,
              71.29166218747704,
              12.039464401699547
            ],
            [
              -156.6160064874378,
              71.29148320800829,
              2.379464401699548
            ]
          ]
        ]
      },
      "bbox": [
        -156.6165148,
        71.29148321,
        2.379464402,
        -156.6025067,
        71.29601135,
        12.0394644
      ],
      "properties": {
        "datetime": "2018-09-11T17:49:01Z",
        "pc:count": 4167915,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95767.42408,
            "count": 4167915,
            "maximum": -95516.98444,
            "minimum": -96012.96444,
            "name": "X",
            "position": 0,
            "stddev": 134.4782219,
            "variance": 18084.39215
          },
          {
            "average": 2368093.505,
            "count": 4167915,
            "maximum": 2368339.925,
            "minimum": 2367866.165,
            "name": "Y",
            "position": 1,
            "stddev": 127.5384654,
            "variance": 16266.06016
          },
          {
            "average": 3.278567092,
            "count": 4167915,
            "maximum": 12.0394644,
            "minimum": 2.379464402,
            "name": "Z",
            "position": 2,
            "stddev": 0.5927114537,
            "variance": 0.3513068673
          },
          {
            "average": 38532.41648,
            "count": 4167915,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11552.5623,
            "variance": 133461695.7
          },
          {
            "average": 1.00000048,
            "count": 4167915,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006927164788,
            "variance": 4.798561199e-07
          },
          {
            "average": 1.00000072,
            "count": 4167915,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008484008529,
            "variance": 7.197840072e-07
          },
          {
            "average": 0.4872776916,
            "count": 4167915,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998381766,
            "variance": 0.2498382028
          },
          {
            "average": 0.0004690594698,
            "count": 4167915,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02165270342,
            "variance": 0.0004688395655
          },
          {
            "average": 1.256815218,
            "count": 4167915,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7056404779,
            "variance": 0.497928484
          },
          {
            "average": -2.134505151,
            "count": 4167915,
            "maximum": 16.39800072,
            "minimum": -19.55999947,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.19760035,
            "variance": 125.3862535
          },
          {
            "average": 0.523027461,
            "count": 4167915,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994695145,
            "variance": 0.2494697959
          },
          {
            "average": 427.1299607,
            "count": 4167915,
            "maximum": 457,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.50067118,
            "variance": 306.2734917
          },
          {
            "average": 220500299.1,
            "count": 4167915,
            "maximum": 220723341.8,
            "minimum": 220420039.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 132954.7077,
            "variance": 17676954310.0
          },
          {
            "average": 0.523027461,
            "count": 4167915,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994695145,
            "variance": 0.2494697959
          },
          {
            "average": 0,
            "count": 4167915,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4167915,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4167915,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2273268529,
            "count": 4167915,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4191054724,
            "variance": 0.175649397
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96012.96444,
          2367866.165,
          2.379464402,
          -95516.98444,
          2368339.925,
          12.0394644
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96012.96444036135,
                2367866.165296356,
                2.379464401699548
              ],
              [
                -96012.96444036135,
                2368339.925296356,
                2.379464401699548
              ],
              [
                -95516.98444036134,
                2368339.925296356,
                12.039464401699547
              ],
              [
                -95516.98444036134,
                2367866.165296356,
                12.039464401699547
              ],
              [
                -96012.96444036135,
                2367866.165296356,
                2.379464401699548
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:49:01+00:00",
        "end_time": "2018-09-08T05:33:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2156.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2156.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2156.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2156.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6165148,
            71.29148321,
            2.379464402,
            -156.6025067,
            71.29601135,
            12.0394644
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6160064874378,
                  71.29148320800829,
                  2.379464401699548
                ],
                [
                  -156.6165147937055,
                  71.29583233198284,
                  2.379464401699548
                ],
                [
                  -156.6030123792336,
                  71.29601135146797,
                  12.039464401699547
                ],
                [
                  -156.60250669067128,
                  71.29166218747704,
                  12.039464401699547
                ],
                [
                  -156.6160064874378,
                  71.29148320800829,
                  2.379464401699548
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2156.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2156.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:49:01Z",
            "pc:count": 4167915,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95767.42408,
                "count": 4167915,
                "maximum": -95516.98444,
                "minimum": -96012.96444,
                "name": "X",
                "position": 0,
                "stddev": 134.4782219,
                "variance": 18084.39215
              },
              {
                "average": 2368093.505,
                "count": 4167915,
                "maximum": 2368339.925,
                "minimum": 2367866.165,
                "name": "Y",
                "position": 1,
                "stddev": 127.5384654,
                "variance": 16266.06016
              },
              {
                "average": 3.278567092,
                "count": 4167915,
                "maximum": 12.0394644,
                "minimum": 2.379464402,
                "name": "Z",
                "position": 2,
                "stddev": 0.5927114537,
                "variance": 0.3513068673
              },
              {
                "average": 38532.41648,
                "count": 4167915,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11552.5623,
                "variance": 133461695.7
              },
              {
                "average": 1.00000048,
                "count": 4167915,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006927164788,
                "variance": 4.798561199e-07
              },
              {
                "average": 1.00000072,
                "count": 4167915,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008484008529,
                "variance": 7.197840072e-07
              },
              {
                "average": 0.4872776916,
                "count": 4167915,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998381766,
                "variance": 0.2498382028
              },
              {
                "average": 0.0004690594698,
                "count": 4167915,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02165270342,
                "variance": 0.0004688395655
              },
              {
                "average": 1.256815218,
                "count": 4167915,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7056404779,
                "variance": 0.497928484
              },
              {
                "average": -2.134505151,
                "count": 4167915,
                "maximum": 16.39800072,
                "minimum": -19.55999947,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.19760035,
                "variance": 125.3862535
              },
              {
                "average": 0.523027461,
                "count": 4167915,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994695145,
                "variance": 0.2494697959
              },
              {
                "average": 427.1299607,
                "count": 4167915,
                "maximum": 457,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.50067118,
                "variance": 306.2734917
              },
              {
                "average": 220500299.1,
                "count": 4167915,
                "maximum": 220723341.8,
                "minimum": 220420039.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 132954.7077,
                "variance": 17676954310.0
              },
              {
                "average": 0.523027461,
                "count": 4167915,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994695145,
                "variance": 0.2494697959
              },
              {
                "average": 0,
                "count": 4167915,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4167915,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4167915,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2273268529,
                "count": 4167915,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4191054724,
                "variance": 0.175649397
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96012.96444,
              2367866.165,
              2.379464402,
              -95516.98444,
              2368339.925,
              12.0394644
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96012.96444036135,
                    2367866.165296356,
                    2.379464401699548
                  ],
                  [
                    -96012.96444036135,
                    2368339.925296356,
                    2.379464401699548
                  ],
                  [
                    -95516.98444036134,
                    2368339.925296356,
                    12.039464401699547
                  ],
                  [
                    -95516.98444036134,
                    2367866.165296356,
                    12.039464401699547
                  ],
                  [
                    -96012.96444036135,
                    2367866.165296356,
                    2.379464401699548
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:49:01+00:00",
            "end_time": "2018-09-08T05:33:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2051.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73168763130627,
              71.28000167680909,
              4.128923883005847
            ],
            [
              -156.73221806352177,
              71.28434960804903,
              4.128923883005847
            ],
            [
              -156.71873004155287,
              71.28453645551592,
              118.64892388300584
            ],
            [
              -156.7182022220322,
              71.28018848254897,
              118.64892388300584
            ],
            [
              -156.73168763130627,
              71.28000167680909,
              4.128923883005847
            ]
          ]
        ]
      },
      "bbox": [
        -156.7322181,
        71.28000168,
        4.128923883,
        -156.7182022,
        71.28453646,
        118.6489239
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:47Z",
        "pc:count": 2862938,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100062.2274,
            "count": 2862938,
            "maximum": -99812.01658,
            "minimum": -100307.7566,
            "name": "X",
            "position": 0,
            "stddev": 136.1407261,
            "variance": 18534.29731
          },
          {
            "average": 2367019.916,
            "count": 2862938,
            "maximum": 2367262.057,
            "minimum": 2366788.357,
            "name": "Y",
            "position": 1,
            "stddev": 130.7659432,
            "variance": 17099.73189
          },
          {
            "average": 10.30911515,
            "count": 2862938,
            "maximum": 118.6489239,
            "minimum": 4.128923883,
            "name": "Z",
            "position": 2,
            "stddev": 1.381684116,
            "variance": 1.909050995
          },
          {
            "average": 46735.80967,
            "count": 2862938,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7598.518062,
            "variance": 57737476.74
          },
          {
            "average": 1.000021307,
            "count": 2862938,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00461587878,
            "variance": 2.130633691e-05
          },
          {
            "average": 1.000042614,
            "count": 2862938,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006527768828,
            "variance": 4.261176587e-05
          },
          {
            "average": 0.4982437622,
            "count": 2862938,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999970029,
            "variance": 0.249997003
          },
          {
            "average": 0.0003454493251,
            "count": 2862938,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01858305977,
            "variance": 0.0003453301105
          },
          {
            "average": 1.33519692,
            "count": 2862938,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4741855572,
            "variance": 0.2248519426
          },
          {
            "average": 0.07021785064,
            "count": 2862938,
            "maximum": 16.30800056,
            "minimum": -15.96000004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.14794052,
            "variance": 102.9806968
          },
          {
            "average": 0.4748908289,
            "count": 2862938,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993692187,
            "variance": 0.2493696166
          },
          {
            "average": 411.6569734,
            "count": 2862938,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9274940572,
            "variance": 0.860245226
          },
          {
            "average": 220418242.1,
            "count": 2862938,
            "maximum": 220419427.7,
            "minimum": 220417228.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 526.1947138,
            "variance": 276880.8769
          },
          {
            "average": 0.4748908289,
            "count": 2862938,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993692187,
            "variance": 0.2493696166
          },
          {
            "average": 0,
            "count": 2862938,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2862938,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2862938,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2021144014,
            "count": 2862938,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4015771737,
            "variance": 0.1612642265
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100307.7566,
          2366788.357,
          4.128923883,
          -99812.01658,
          2367262.057,
          118.6489239
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100307.75657594306,
                2366788.357114885,
                4.128923883005847
              ],
              [
                -100307.75657594306,
                2367262.057114885,
                4.128923883005847
              ],
              [
                -99812.01657594307,
                2367262.057114885,
                118.64892388300584
              ],
              [
                -99812.01657594307,
                2366788.357114885,
                118.64892388300584
              ],
              [
                -100307.75657594306,
                2366788.357114885,
                4.128923883005847
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:47+00:00",
        "end_time": "2018-09-08T04:47:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2051.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2051.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2051.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2051.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7322181,
            71.28000168,
            4.128923883,
            -156.7182022,
            71.28453646,
            118.6489239
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73168763130627,
                  71.28000167680909,
                  4.128923883005847
                ],
                [
                  -156.73221806352177,
                  71.28434960804903,
                  4.128923883005847
                ],
                [
                  -156.71873004155287,
                  71.28453645551592,
                  118.64892388300584
                ],
                [
                  -156.7182022220322,
                  71.28018848254897,
                  118.64892388300584
                ],
                [
                  -156.73168763130627,
                  71.28000167680909,
                  4.128923883005847
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2051.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2051.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:47Z",
            "pc:count": 2862938,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100062.2274,
                "count": 2862938,
                "maximum": -99812.01658,
                "minimum": -100307.7566,
                "name": "X",
                "position": 0,
                "stddev": 136.1407261,
                "variance": 18534.29731
              },
              {
                "average": 2367019.916,
                "count": 2862938,
                "maximum": 2367262.057,
                "minimum": 2366788.357,
                "name": "Y",
                "position": 1,
                "stddev": 130.7659432,
                "variance": 17099.73189
              },
              {
                "average": 10.30911515,
                "count": 2862938,
                "maximum": 118.6489239,
                "minimum": 4.128923883,
                "name": "Z",
                "position": 2,
                "stddev": 1.381684116,
                "variance": 1.909050995
              },
              {
                "average": 46735.80967,
                "count": 2862938,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7598.518062,
                "variance": 57737476.74
              },
              {
                "average": 1.000021307,
                "count": 2862938,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00461587878,
                "variance": 2.130633691e-05
              },
              {
                "average": 1.000042614,
                "count": 2862938,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006527768828,
                "variance": 4.261176587e-05
              },
              {
                "average": 0.4982437622,
                "count": 2862938,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999970029,
                "variance": 0.249997003
              },
              {
                "average": 0.0003454493251,
                "count": 2862938,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01858305977,
                "variance": 0.0003453301105
              },
              {
                "average": 1.33519692,
                "count": 2862938,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4741855572,
                "variance": 0.2248519426
              },
              {
                "average": 0.07021785064,
                "count": 2862938,
                "maximum": 16.30800056,
                "minimum": -15.96000004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.14794052,
                "variance": 102.9806968
              },
              {
                "average": 0.4748908289,
                "count": 2862938,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993692187,
                "variance": 0.2493696166
              },
              {
                "average": 411.6569734,
                "count": 2862938,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9274940572,
                "variance": 0.860245226
              },
              {
                "average": 220418242.1,
                "count": 2862938,
                "maximum": 220419427.7,
                "minimum": 220417228.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 526.1947138,
                "variance": 276880.8769
              },
              {
                "average": 0.4748908289,
                "count": 2862938,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993692187,
                "variance": 0.2493696166
              },
              {
                "average": 0,
                "count": 2862938,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2862938,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2862938,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2021144014,
                "count": 2862938,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4015771737,
                "variance": 0.1612642265
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100307.7566,
              2366788.357,
              4.128923883,
              -99812.01658,
              2367262.057,
              118.6489239
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100307.75657594306,
                    2366788.357114885,
                    4.128923883005847
                  ],
                  [
                    -100307.75657594306,
                    2367262.057114885,
                    4.128923883005847
                  ],
                  [
                    -99812.01657594307,
                    2367262.057114885,
                    118.64892388300584
                  ],
                  [
                    -99812.01657594307,
                    2366788.357114885,
                    118.64892388300584
                  ],
                  [
                    -100307.75657594306,
                    2366788.357114885,
                    4.128923883005847
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:47+00:00",
            "end_time": "2018-09-08T04:47:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1932.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.82173009982577,
              71.26829046109688,
              0.972430733757417
            ],
            [
              -156.82227769650473,
              71.27263761944862,
              0.972430733757417
            ],
            [
              -156.8088007463814,
              71.27283057584309,
              22.792430733757417
            ],
            [
              -156.80825575833515,
              71.26848337443681,
              22.792430733757417
            ],
            [
              -156.82173009982577,
              71.26829046109688,
              0.972430733757417
            ]
          ]
        ]
      },
      "bbox": [
        -156.8222777,
        71.26829046,
        0.9724307338,
        -156.8082558,
        71.27283058,
        22.79243073
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:22Z",
        "pc:count": 3136902,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103415.074,
            "count": 3136902,
            "maximum": -103170.6971,
            "minimum": -103666.3171,
            "name": "X",
            "position": 0,
            "stddev": 135.3358734,
            "variance": 18315.79862
          },
          {
            "average": 2365891.563,
            "count": 3136902,
            "maximum": 2366126.521,
            "minimum": 2365652.841,
            "name": "Y",
            "position": 1,
            "stddev": 130.0729134,
            "variance": 16918.9628
          },
          {
            "average": 10.44490636,
            "count": 3136902,
            "maximum": 22.79243073,
            "minimum": 0.9724307338,
            "name": "Z",
            "position": 2,
            "stddev": 1.814508784,
            "variance": 3.292442126
          },
          {
            "average": 39918.48298,
            "count": 3136902,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13158.46395,
            "variance": 173145173.5
          },
          {
            "average": 1.003038029,
            "count": 3136902,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05511557485,
            "variance": 0.003037726591
          },
          {
            "average": 1.006068726,
            "count": 3136902,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07783750323,
            "variance": 0.006058676909
          },
          {
            "average": 0.5040473053,
            "count": 3136902,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999836987,
            "variance": 0.249983699
          },
          {
            "average": 0.0003850933182,
            "count": 3136902,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01962001896,
            "variance": 0.000384945144
          },
          {
            "average": 1.415128047,
            "count": 3136902,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7963581434,
            "variance": 0.6341862926
          },
          {
            "average": 0.3678766042,
            "count": 3136902,
            "maximum": 16.37400055,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43808756,
            "variance": 108.9536719
          },
          {
            "average": 0.5344945427,
            "count": 3136902,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988087869,
            "variance": 0.2488102058
          },
          {
            "average": 408.3628982,
            "count": 3136902,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9386536416,
            "variance": 0.8810706589
          },
          {
            "average": 220416396.1,
            "count": 3136902,
            "maximum": 220417182,
            "minimum": 220415723.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 534.109345,
            "variance": 285272.7924
          },
          {
            "average": 0.5344945427,
            "count": 3136902,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988087869,
            "variance": 0.2488102058
          },
          {
            "average": 0,
            "count": 3136902,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136902,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136902,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2464861829,
            "count": 3136902,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4309649681,
            "variance": 0.1857308037
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103666.3171,
          2365652.841,
          0.9724307338,
          -103170.6971,
          2366126.521,
          22.79243073
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103666.31710885157,
                2365652.841419458,
                0.972430733757417
              ],
              [
                -103666.31710885157,
                2366126.5214194576,
                0.972430733757417
              ],
              [
                -103170.69710885157,
                2366126.5214194576,
                22.792430733757417
              ],
              [
                -103170.69710885157,
                2365652.841419458,
                22.792430733757417
              ],
              [
                -103666.31710885157,
                2365652.841419458,
                0.972430733757417
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:22+00:00",
        "end_time": "2018-09-08T04:22:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1932.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1932.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1932.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1932.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8222777,
            71.26829046,
            0.9724307338,
            -156.8082558,
            71.27283058,
            22.79243073
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.82173009982577,
                  71.26829046109688,
                  0.972430733757417
                ],
                [
                  -156.82227769650473,
                  71.27263761944862,
                  0.972430733757417
                ],
                [
                  -156.8088007463814,
                  71.27283057584309,
                  22.792430733757417
                ],
                [
                  -156.80825575833515,
                  71.26848337443681,
                  22.792430733757417
                ],
                [
                  -156.82173009982577,
                  71.26829046109688,
                  0.972430733757417
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1932.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1932.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:22Z",
            "pc:count": 3136902,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103415.074,
                "count": 3136902,
                "maximum": -103170.6971,
                "minimum": -103666.3171,
                "name": "X",
                "position": 0,
                "stddev": 135.3358734,
                "variance": 18315.79862
              },
              {
                "average": 2365891.563,
                "count": 3136902,
                "maximum": 2366126.521,
                "minimum": 2365652.841,
                "name": "Y",
                "position": 1,
                "stddev": 130.0729134,
                "variance": 16918.9628
              },
              {
                "average": 10.44490636,
                "count": 3136902,
                "maximum": 22.79243073,
                "minimum": 0.9724307338,
                "name": "Z",
                "position": 2,
                "stddev": 1.814508784,
                "variance": 3.292442126
              },
              {
                "average": 39918.48298,
                "count": 3136902,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13158.46395,
                "variance": 173145173.5
              },
              {
                "average": 1.003038029,
                "count": 3136902,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05511557485,
                "variance": 0.003037726591
              },
              {
                "average": 1.006068726,
                "count": 3136902,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07783750323,
                "variance": 0.006058676909
              },
              {
                "average": 0.5040473053,
                "count": 3136902,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999836987,
                "variance": 0.249983699
              },
              {
                "average": 0.0003850933182,
                "count": 3136902,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01962001896,
                "variance": 0.000384945144
              },
              {
                "average": 1.415128047,
                "count": 3136902,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7963581434,
                "variance": 0.6341862926
              },
              {
                "average": 0.3678766042,
                "count": 3136902,
                "maximum": 16.37400055,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43808756,
                "variance": 108.9536719
              },
              {
                "average": 0.5344945427,
                "count": 3136902,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988087869,
                "variance": 0.2488102058
              },
              {
                "average": 408.3628982,
                "count": 3136902,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9386536416,
                "variance": 0.8810706589
              },
              {
                "average": 220416396.1,
                "count": 3136902,
                "maximum": 220417182,
                "minimum": 220415723.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 534.109345,
                "variance": 285272.7924
              },
              {
                "average": 0.5344945427,
                "count": 3136902,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988087869,
                "variance": 0.2488102058
              },
              {
                "average": 0,
                "count": 3136902,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136902,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136902,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2464861829,
                "count": 3136902,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4309649681,
                "variance": 0.1857308037
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103666.3171,
              2365652.841,
              0.9724307338,
              -103170.6971,
              2366126.521,
              22.79243073
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103666.31710885157,
                    2365652.841419458,
                    0.972430733757417
                  ],
                  [
                    -103666.31710885157,
                    2366126.5214194576,
                    0.972430733757417
                  ],
                  [
                    -103170.69710885157,
                    2366126.5214194576,
                    22.792430733757417
                  ],
                  [
                    -103170.69710885157,
                    2365652.841419458,
                    22.792430733757417
                  ],
                  [
                    -103666.31710885157,
                    2365652.841419458,
                    0.972430733757417
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:22+00:00",
            "end_time": "2018-09-08T04:22:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2177.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69231274869003,
              71.29612825546435,
              -5.198922367916944
            ],
            [
              -156.69283580551024,
              71.30047584724545,
              -5.198922367916944
            ],
            [
              -156.6793448225087,
              71.30065991966191,
              16.361077632083056
            ],
            [
              -156.67882438047664,
              71.29631228673846,
              16.361077632083056
            ],
            [
              -156.69231274869003,
              71.29612825546435,
              -5.198922367916944
            ]
          ]
        ]
      },
      "bbox": [
        -156.6928358,
        71.29612826,
        -5.198922368,
        -156.6788244,
        71.30065992,
        16.36107763
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:33Z",
        "pc:count": 3281602,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98549.9119,
            "count": 3281602,
            "maximum": -98296.08118,
            "minimum": -98791.56118,
            "name": "X",
            "position": 0,
            "stddev": 132.2588638,
            "variance": 17492.40705
          },
          {
            "average": 2368721.722,
            "count": 3281602,
            "maximum": 2368956.879,
            "minimum": 2368483.279,
            "name": "Y",
            "position": 1,
            "stddev": 128.7652898,
            "variance": 16580.49985
          },
          {
            "average": 5.007180426,
            "count": 3281602,
            "maximum": 16.36107763,
            "minimum": -5.198922368,
            "name": "Z",
            "position": 2,
            "stddev": 1.191678989,
            "variance": 1.420098812
          },
          {
            "average": 41575.43526,
            "count": 3281602,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9847.809071,
            "variance": 96979343.5
          },
          {
            "average": 1.002713918,
            "count": 3281602,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05321177382,
            "variance": 0.002831492873
          },
          {
            "average": 1.005426618,
            "count": 3281602,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07597360308,
            "variance": 0.005771988365
          },
          {
            "average": 0.5025082262,
            "count": 3281602,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999937849,
            "variance": 0.249993785
          },
          {
            "average": 0.0003991952711,
            "count": 3281602,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01997588636,
            "variance": 0.0003990360358
          },
          {
            "average": 1.345480652,
            "count": 3281602,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8312585858,
            "variance": 0.6909908365
          },
          {
            "average": 1.301056265,
            "count": 3281602,
            "maximum": 16.3560009,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4535216,
            "variance": 109.2761139
          },
          {
            "average": 0.5362158482,
            "count": 3281602,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986867635,
            "variance": 0.2486884881
          },
          {
            "average": 410.6271827,
            "count": 3281602,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9793386303,
            "variance": 0.9591041529
          },
          {
            "average": 220417656.6,
            "count": 3281602,
            "maximum": 220418393.2,
            "minimum": 220416779.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.5150272,
            "variance": 292156.4947
          },
          {
            "average": 0.5362158482,
            "count": 3281602,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986867635,
            "variance": 0.2486884881
          },
          {
            "average": 0,
            "count": 3281602,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3281602,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3281602,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2583186505,
            "count": 3281602,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4377101594,
            "variance": 0.1915901837
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98791.56118,
          2368483.279,
          -5.198922368,
          -98296.08118,
          2368956.879,
          16.36107763
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98791.56117693463,
                2368483.279321911,
                -5.198922367916944
              ],
              [
                -98791.56117693463,
                2368956.8793219104,
                -5.198922367916944
              ],
              [
                -98296.08117693462,
                2368956.8793219104,
                16.361077632083056
              ],
              [
                -98296.08117693462,
                2368483.279321911,
                16.361077632083056
              ],
              [
                -98791.56117693463,
                2368483.279321911,
                -5.198922367916944
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:33+00:00",
        "end_time": "2018-09-08T04:39:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2177.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2177.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2177.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2177.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6928358,
            71.29612826,
            -5.198922368,
            -156.6788244,
            71.30065992,
            16.36107763
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69231274869003,
                  71.29612825546435,
                  -5.198922367916944
                ],
                [
                  -156.69283580551024,
                  71.30047584724545,
                  -5.198922367916944
                ],
                [
                  -156.6793448225087,
                  71.30065991966191,
                  16.361077632083056
                ],
                [
                  -156.67882438047664,
                  71.29631228673846,
                  16.361077632083056
                ],
                [
                  -156.69231274869003,
                  71.29612825546435,
                  -5.198922367916944
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2177.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2177.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:33Z",
            "pc:count": 3281602,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98549.9119,
                "count": 3281602,
                "maximum": -98296.08118,
                "minimum": -98791.56118,
                "name": "X",
                "position": 0,
                "stddev": 132.2588638,
                "variance": 17492.40705
              },
              {
                "average": 2368721.722,
                "count": 3281602,
                "maximum": 2368956.879,
                "minimum": 2368483.279,
                "name": "Y",
                "position": 1,
                "stddev": 128.7652898,
                "variance": 16580.49985
              },
              {
                "average": 5.007180426,
                "count": 3281602,
                "maximum": 16.36107763,
                "minimum": -5.198922368,
                "name": "Z",
                "position": 2,
                "stddev": 1.191678989,
                "variance": 1.420098812
              },
              {
                "average": 41575.43526,
                "count": 3281602,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9847.809071,
                "variance": 96979343.5
              },
              {
                "average": 1.002713918,
                "count": 3281602,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05321177382,
                "variance": 0.002831492873
              },
              {
                "average": 1.005426618,
                "count": 3281602,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07597360308,
                "variance": 0.005771988365
              },
              {
                "average": 0.5025082262,
                "count": 3281602,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999937849,
                "variance": 0.249993785
              },
              {
                "average": 0.0003991952711,
                "count": 3281602,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01997588636,
                "variance": 0.0003990360358
              },
              {
                "average": 1.345480652,
                "count": 3281602,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8312585858,
                "variance": 0.6909908365
              },
              {
                "average": 1.301056265,
                "count": 3281602,
                "maximum": 16.3560009,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4535216,
                "variance": 109.2761139
              },
              {
                "average": 0.5362158482,
                "count": 3281602,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986867635,
                "variance": 0.2486884881
              },
              {
                "average": 410.6271827,
                "count": 3281602,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9793386303,
                "variance": 0.9591041529
              },
              {
                "average": 220417656.6,
                "count": 3281602,
                "maximum": 220418393.2,
                "minimum": 220416779.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.5150272,
                "variance": 292156.4947
              },
              {
                "average": 0.5362158482,
                "count": 3281602,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986867635,
                "variance": 0.2486884881
              },
              {
                "average": 0,
                "count": 3281602,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3281602,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3281602,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2583186505,
                "count": 3281602,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4377101594,
                "variance": 0.1915901837
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98791.56118,
              2368483.279,
              -5.198922368,
              -98296.08118,
              2368956.879,
              16.36107763
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98791.56117693463,
                    2368483.279321911,
                    -5.198922367916944
                  ],
                  [
                    -98791.56117693463,
                    2368956.8793219104,
                    -5.198922367916944
                  ],
                  [
                    -98296.08117693462,
                    2368956.8793219104,
                    16.361077632083056
                  ],
                  [
                    -98296.08117693462,
                    2368483.279321911,
                    16.361077632083056
                  ],
                  [
                    -98791.56117693463,
                    2368483.279321911,
                    -5.198922367916944
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:33+00:00",
            "end_time": "2018-09-08T04:39:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2124.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62906171391393,
              71.2874799397993,
              3.420025950630691
            ],
            [
              -156.62957233487046,
              71.29182781089143,
              3.420025950630691
            ],
            [
              -156.61607080567694,
              71.2920077425378,
              21.520025950630693
            ],
            [
              -156.61556280106262,
              71.28765983124636,
              21.520025950630693
            ],
            [
              -156.62906171391393,
              71.2874799397993,
              3.420025950630691
            ]
          ]
        ]
      },
      "bbox": [
        -156.6295723,
        71.28747994,
        3.420025951,
        -156.6155628,
        71.29200774,
        21.52002595
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:28Z",
        "pc:count": 3717195,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96261.84246,
            "count": 3717195,
            "maximum": -96013.07532,
            "minimum": -96509.11532,
            "name": "X",
            "position": 0,
            "stddev": 136.0429611,
            "variance": 18507.68727
          },
          {
            "average": 2367683.59,
            "count": 3717195,
            "maximum": 2367923.309,
            "minimum": 2367449.669,
            "name": "Y",
            "position": 1,
            "stddev": 131.7695866,
            "variance": 17363.22396
          },
          {
            "average": 5.103401959,
            "count": 3717195,
            "maximum": 21.52002595,
            "minimum": 3.420025951,
            "name": "Z",
            "position": 2,
            "stddev": 0.4271536893,
            "variance": 0.1824602743
          },
          {
            "average": 38334.79442,
            "count": 3717195,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12151.06878,
            "variance": 147648472.6
          },
          {
            "average": 1.00000269,
            "count": 3717195,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001640181096,
            "variance": 2.690194028e-06
          },
          {
            "average": 1.00000538,
            "count": 3717195,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002319563231,
            "variance": 5.380373581e-06
          },
          {
            "average": 0.4996533677,
            "count": 3717195,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999471,
            "variance": 0.2499999471
          },
          {
            "average": 0.0005630589732,
            "count": 3717195,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02372218559,
            "variance": 0.0005627420892
          },
          {
            "average": 1.223852125,
            "count": 3717195,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4169403376,
            "variance": 0.1738392451
          },
          {
            "average": 2.290371712,
            "count": 3717195,
            "maximum": 20.49600029,
            "minimum": -19.62000084,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78110404,
            "variance": 116.2322043
          },
          {
            "average": 0.5175910868,
            "count": 3717195,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996905251,
            "variance": 0.2496906208
          },
          {
            "average": 424.647793,
            "count": 3717195,
            "maximum": 458,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.00555876,
            "variance": 256.1779113
          },
          {
            "average": 220479816.5,
            "count": 3717195,
            "maximum": 220723488.5,
            "minimum": 220420050.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 119657.1601,
            "variance": 14317835960.0
          },
          {
            "average": 0.5175910868,
            "count": 3717195,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996905251,
            "variance": 0.2496906208
          },
          {
            "average": 0,
            "count": 3717195,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3717195,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3717195,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2771791633,
            "count": 3717195,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4476057737,
            "variance": 0.2003509286
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96509.11532,
          2367449.669,
          3.420025951,
          -96013.07532,
          2367923.309,
          21.52002595
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96509.11531841966,
                2367449.669139857,
                3.420025950630691
              ],
              [
                -96509.11531841966,
                2367923.3091398566,
                3.420025950630691
              ],
              [
                -96013.07531841965,
                2367923.3091398566,
                21.520025950630693
              ],
              [
                -96013.07531841965,
                2367449.669139857,
                21.520025950630693
              ],
              [
                -96509.11531841966,
                2367449.669139857,
                3.420025950630691
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:28+00:00",
        "end_time": "2018-09-08T05:34:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2124.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2124.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2124.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2124.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6295723,
            71.28747994,
            3.420025951,
            -156.6155628,
            71.29200774,
            21.52002595
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62906171391393,
                  71.2874799397993,
                  3.420025950630691
                ],
                [
                  -156.62957233487046,
                  71.29182781089143,
                  3.420025950630691
                ],
                [
                  -156.61607080567694,
                  71.2920077425378,
                  21.520025950630693
                ],
                [
                  -156.61556280106262,
                  71.28765983124636,
                  21.520025950630693
                ],
                [
                  -156.62906171391393,
                  71.2874799397993,
                  3.420025950630691
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2124.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2124.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:28Z",
            "pc:count": 3717195,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96261.84246,
                "count": 3717195,
                "maximum": -96013.07532,
                "minimum": -96509.11532,
                "name": "X",
                "position": 0,
                "stddev": 136.0429611,
                "variance": 18507.68727
              },
              {
                "average": 2367683.59,
                "count": 3717195,
                "maximum": 2367923.309,
                "minimum": 2367449.669,
                "name": "Y",
                "position": 1,
                "stddev": 131.7695866,
                "variance": 17363.22396
              },
              {
                "average": 5.103401959,
                "count": 3717195,
                "maximum": 21.52002595,
                "minimum": 3.420025951,
                "name": "Z",
                "position": 2,
                "stddev": 0.4271536893,
                "variance": 0.1824602743
              },
              {
                "average": 38334.79442,
                "count": 3717195,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12151.06878,
                "variance": 147648472.6
              },
              {
                "average": 1.00000269,
                "count": 3717195,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001640181096,
                "variance": 2.690194028e-06
              },
              {
                "average": 1.00000538,
                "count": 3717195,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002319563231,
                "variance": 5.380373581e-06
              },
              {
                "average": 0.4996533677,
                "count": 3717195,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999471,
                "variance": 0.2499999471
              },
              {
                "average": 0.0005630589732,
                "count": 3717195,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02372218559,
                "variance": 0.0005627420892
              },
              {
                "average": 1.223852125,
                "count": 3717195,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4169403376,
                "variance": 0.1738392451
              },
              {
                "average": 2.290371712,
                "count": 3717195,
                "maximum": 20.49600029,
                "minimum": -19.62000084,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78110404,
                "variance": 116.2322043
              },
              {
                "average": 0.5175910868,
                "count": 3717195,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996905251,
                "variance": 0.2496906208
              },
              {
                "average": 424.647793,
                "count": 3717195,
                "maximum": 458,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.00555876,
                "variance": 256.1779113
              },
              {
                "average": 220479816.5,
                "count": 3717195,
                "maximum": 220723488.5,
                "minimum": 220420050.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 119657.1601,
                "variance": 14317835960.0
              },
              {
                "average": 0.5175910868,
                "count": 3717195,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996905251,
                "variance": 0.2496906208
              },
              {
                "average": 0,
                "count": 3717195,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3717195,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3717195,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2771791633,
                "count": 3717195,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4476057737,
                "variance": 0.2003509286
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96509.11532,
              2367449.669,
              3.420025951,
              -96013.07532,
              2367923.309,
              21.52002595
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96509.11531841966,
                    2367449.669139857,
                    3.420025950630691
                  ],
                  [
                    -96509.11531841966,
                    2367923.3091398566,
                    3.420025950630691
                  ],
                  [
                    -96013.07531841965,
                    2367923.3091398566,
                    21.520025950630693
                  ],
                  [
                    -96013.07531841965,
                    2367449.669139857,
                    21.520025950630693
                  ],
                  [
                    -96509.11531841966,
                    2367449.669139857,
                    3.420025950630691
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:28+00:00",
            "end_time": "2018-09-08T05:34:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2238.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69148506844834,
              71.3084187465497,
              1.41252039959195
            ],
            [
              -156.6920082517326,
              71.31276670208675,
              1.41252039959195
            ],
            [
              -156.67849950014386,
              71.3129508736641,
              10.91252039959195
            ],
            [
              -156.6779789365333,
              71.30860287692985,
              10.91252039959195
            ],
            [
              -156.69148506844834,
              71.3084187465497,
              1.41252039959195
            ]
          ]
        ]
      },
      "bbox": [
        -156.6920083,
        71.30841875,
        1.4125204,
        -156.6779789,
        71.31295087,
        10.9125204
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:10Z",
        "pc:count": 1377492,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98457.8041,
            "count": 1377492,
            "maximum": -98211.14735,
            "minimum": -98707.00735,
            "name": "X",
            "position": 0,
            "stddev": 138.2178781,
            "variance": 19104.18184
          },
          {
            "average": 2370064.642,
            "count": 1377492,
            "maximum": 2370292.264,
            "minimum": 2369818.664,
            "name": "Y",
            "position": 1,
            "stddev": 133.6418801,
            "variance": 17860.15211
          },
          {
            "average": 1.859231749,
            "count": 1377492,
            "maximum": 10.9125204,
            "minimum": 1.4125204,
            "name": "Z",
            "position": 2,
            "stddev": 0.8554194319,
            "variance": 0.7317424044
          },
          {
            "average": 23895.39175,
            "count": 1377492,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16312.28321,
            "variance": 266090583.6
          },
          {
            "average": 1,
            "count": 1377492,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1377492,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.494645341,
            "count": 1377492,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999715083,
            "variance": 0.2499715091
          },
          {
            "average": 0.0008152497437,
            "count": 1377492,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02854094783,
            "variance": 0.0008145857029
          },
          {
            "average": 7.705415349,
            "count": 1377492,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.540373833,
            "variance": 6.453499212
          },
          {
            "average": 2.748063154,
            "count": 1377492,
            "maximum": 16.40399933,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.08604789,
            "variance": 37.03997892
          },
          {
            "average": 0.5015753268,
            "count": 1377492,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999976998,
            "variance": 0.2499976998
          },
          {
            "average": 407.8933075,
            "count": 1377492,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7067689931,
            "variance": 0.4995224097
          },
          {
            "average": 220416104.2,
            "count": 1377492,
            "maximum": 220417290.7,
            "minimum": 220415027.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 394.9015483,
            "variance": 155947.2328
          },
          {
            "average": 0.5015753268,
            "count": 1377492,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999976998,
            "variance": 0.2499976998
          },
          {
            "average": 0,
            "count": 1377492,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1377492,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1377492,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05483226037,
            "count": 1377492,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2276526328,
            "variance": 0.05182572121
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98707.00735,
          2369818.664,
          1.4125204,
          -98211.14735,
          2370292.264,
          10.9125204
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98707.00735042794,
                2369818.6644026237,
                1.41252039959195
              ],
              [
                -98707.00735042794,
                2370292.2644026233,
                1.41252039959195
              ],
              [
                -98211.14735042796,
                2370292.2644026233,
                10.91252039959195
              ],
              [
                -98211.14735042796,
                2369818.6644026237,
                10.91252039959195
              ],
              [
                -98707.00735042794,
                2369818.6644026237,
                1.41252039959195
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:10+00:00",
        "end_time": "2018-09-08T04:10:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2238.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2238.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2238.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2238.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6920083,
            71.30841875,
            1.4125204,
            -156.6779789,
            71.31295087,
            10.9125204
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69148506844834,
                  71.3084187465497,
                  1.41252039959195
                ],
                [
                  -156.6920082517326,
                  71.31276670208675,
                  1.41252039959195
                ],
                [
                  -156.67849950014386,
                  71.3129508736641,
                  10.91252039959195
                ],
                [
                  -156.6779789365333,
                  71.30860287692985,
                  10.91252039959195
                ],
                [
                  -156.69148506844834,
                  71.3084187465497,
                  1.41252039959195
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2238.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2238.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:10Z",
            "pc:count": 1377492,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98457.8041,
                "count": 1377492,
                "maximum": -98211.14735,
                "minimum": -98707.00735,
                "name": "X",
                "position": 0,
                "stddev": 138.2178781,
                "variance": 19104.18184
              },
              {
                "average": 2370064.642,
                "count": 1377492,
                "maximum": 2370292.264,
                "minimum": 2369818.664,
                "name": "Y",
                "position": 1,
                "stddev": 133.6418801,
                "variance": 17860.15211
              },
              {
                "average": 1.859231749,
                "count": 1377492,
                "maximum": 10.9125204,
                "minimum": 1.4125204,
                "name": "Z",
                "position": 2,
                "stddev": 0.8554194319,
                "variance": 0.7317424044
              },
              {
                "average": 23895.39175,
                "count": 1377492,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16312.28321,
                "variance": 266090583.6
              },
              {
                "average": 1,
                "count": 1377492,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1377492,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.494645341,
                "count": 1377492,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999715083,
                "variance": 0.2499715091
              },
              {
                "average": 0.0008152497437,
                "count": 1377492,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02854094783,
                "variance": 0.0008145857029
              },
              {
                "average": 7.705415349,
                "count": 1377492,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.540373833,
                "variance": 6.453499212
              },
              {
                "average": 2.748063154,
                "count": 1377492,
                "maximum": 16.40399933,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.08604789,
                "variance": 37.03997892
              },
              {
                "average": 0.5015753268,
                "count": 1377492,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999976998,
                "variance": 0.2499976998
              },
              {
                "average": 407.8933075,
                "count": 1377492,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7067689931,
                "variance": 0.4995224097
              },
              {
                "average": 220416104.2,
                "count": 1377492,
                "maximum": 220417290.7,
                "minimum": 220415027.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 394.9015483,
                "variance": 155947.2328
              },
              {
                "average": 0.5015753268,
                "count": 1377492,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999976998,
                "variance": 0.2499976998
              },
              {
                "average": 0,
                "count": 1377492,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1377492,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1377492,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05483226037,
                "count": 1377492,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2276526328,
                "variance": 0.05182572121
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98707.00735,
              2369818.664,
              1.4125204,
              -98211.14735,
              2370292.264,
              10.9125204
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98707.00735042794,
                    2369818.6644026237,
                    1.41252039959195
                  ],
                  [
                    -98707.00735042794,
                    2370292.2644026233,
                    1.41252039959195
                  ],
                  [
                    -98211.14735042796,
                    2370292.2644026233,
                    10.91252039959195
                  ],
                  [
                    -98211.14735042796,
                    2369818.6644026237,
                    10.91252039959195
                  ],
                  [
                    -98707.00735042794,
                    2369818.6644026237,
                    1.41252039959195
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:10+00:00",
            "end_time": "2018-09-08T04:10:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2200.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6792436112325,
              71.30013567605937,
              1.423857017452899
            ],
            [
              -156.67976426754802,
              71.30448378747538,
              1.423857017452899
            ],
            [
              -156.66628383434391,
              71.30466679247722,
              42.563857017452904
            ],
            [
              -156.66576579152246,
              71.30031864014312,
              42.563857017452904
            ],
            [
              -156.6792436112325,
              71.30013567605937,
              1.423857017452899
            ]
          ]
        ]
      },
      "bbox": [
        -156.6797643,
        71.30013568,
        1.423857017,
        -156.6657658,
        71.30466679,
        42.56385702
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:44Z",
        "pc:count": 2965680,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98043.72945,
            "count": 2965680,
            "maximum": -97799.67147,
            "minimum": -98294.67147,
            "name": "X",
            "position": 0,
            "stddev": 135.2222005,
            "variance": 18285.04351
          },
          {
            "average": 2369136.67,
            "count": 2965680,
            "maximum": 2369373.356,
            "minimum": 2368899.716,
            "name": "Y",
            "position": 1,
            "stddev": 128.3258735,
            "variance": 16467.52981
          },
          {
            "average": 4.461655532,
            "count": 2965680,
            "maximum": 42.56385702,
            "minimum": 1.423857017,
            "name": "Z",
            "position": 2,
            "stddev": 0.4876100549,
            "variance": 0.2377635657
          },
          {
            "average": 38476.78959,
            "count": 2965680,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11298.52642,
            "variance": 127656699.2
          },
          {
            "average": 1.000911427,
            "count": 2965680,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03026534957,
            "variance": 0.0009159913846
          },
          {
            "average": 1.001823191,
            "count": 2965680,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04284918188,
            "variance": 0.001836052387
          },
          {
            "average": 0.5020706887,
            "count": 2965680,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999957965,
            "variance": 0.2499957965
          },
          {
            "average": 0.0004508240943,
            "count": 2965680,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02122783559,
            "variance": 0.0004506210039
          },
          {
            "average": 1.284275107,
            "count": 2965680,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.50388811,
            "variance": 0.2539032274
          },
          {
            "average": 1.57014499,
            "count": 2965680,
            "maximum": 16.48200035,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61642046,
            "variance": 112.7083835
          },
          {
            "average": 0.5430046397,
            "count": 2965680,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498147252,
            "variance": 0.2481506846
          },
          {
            "average": 410.6449165,
            "count": 2965680,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9952988536,
            "variance": 0.9906198079
          },
          {
            "average": 220417665.8,
            "count": 2965680,
            "maximum": 220418404.4,
            "minimum": 220416768.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 550.5913439,
            "variance": 303150.828
          },
          {
            "average": 0.5430046397,
            "count": 2965680,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498147252,
            "variance": 0.2481506846
          },
          {
            "average": 0,
            "count": 2965680,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2965680,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2965680,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2726841736,
            "count": 2965680,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4453398499,
            "variance": 0.1983275819
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98294.67147,
          2368899.716,
          1.423857017,
          -97799.67147,
          2369373.356,
          42.56385702
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98294.67146525712,
                2368899.715803835,
                1.423857017452899
              ],
              [
                -98294.67146525712,
                2369373.3558038347,
                1.423857017452899
              ],
              [
                -97799.67146525712,
                2369373.3558038347,
                42.563857017452904
              ],
              [
                -97799.67146525712,
                2368899.715803835,
                42.563857017452904
              ],
              [
                -98294.67146525712,
                2368899.715803835,
                1.423857017452899
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:44+00:00",
        "end_time": "2018-09-08T04:39:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2200.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2200.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2200.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2200.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6797643,
            71.30013568,
            1.423857017,
            -156.6657658,
            71.30466679,
            42.56385702
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6792436112325,
                  71.30013567605937,
                  1.423857017452899
                ],
                [
                  -156.67976426754802,
                  71.30448378747538,
                  1.423857017452899
                ],
                [
                  -156.66628383434391,
                  71.30466679247722,
                  42.563857017452904
                ],
                [
                  -156.66576579152246,
                  71.30031864014312,
                  42.563857017452904
                ],
                [
                  -156.6792436112325,
                  71.30013567605937,
                  1.423857017452899
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2200.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2200.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:44Z",
            "pc:count": 2965680,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98043.72945,
                "count": 2965680,
                "maximum": -97799.67147,
                "minimum": -98294.67147,
                "name": "X",
                "position": 0,
                "stddev": 135.2222005,
                "variance": 18285.04351
              },
              {
                "average": 2369136.67,
                "count": 2965680,
                "maximum": 2369373.356,
                "minimum": 2368899.716,
                "name": "Y",
                "position": 1,
                "stddev": 128.3258735,
                "variance": 16467.52981
              },
              {
                "average": 4.461655532,
                "count": 2965680,
                "maximum": 42.56385702,
                "minimum": 1.423857017,
                "name": "Z",
                "position": 2,
                "stddev": 0.4876100549,
                "variance": 0.2377635657
              },
              {
                "average": 38476.78959,
                "count": 2965680,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11298.52642,
                "variance": 127656699.2
              },
              {
                "average": 1.000911427,
                "count": 2965680,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03026534957,
                "variance": 0.0009159913846
              },
              {
                "average": 1.001823191,
                "count": 2965680,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04284918188,
                "variance": 0.001836052387
              },
              {
                "average": 0.5020706887,
                "count": 2965680,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999957965,
                "variance": 0.2499957965
              },
              {
                "average": 0.0004508240943,
                "count": 2965680,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02122783559,
                "variance": 0.0004506210039
              },
              {
                "average": 1.284275107,
                "count": 2965680,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.50388811,
                "variance": 0.2539032274
              },
              {
                "average": 1.57014499,
                "count": 2965680,
                "maximum": 16.48200035,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61642046,
                "variance": 112.7083835
              },
              {
                "average": 0.5430046397,
                "count": 2965680,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498147252,
                "variance": 0.2481506846
              },
              {
                "average": 410.6449165,
                "count": 2965680,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9952988536,
                "variance": 0.9906198079
              },
              {
                "average": 220417665.8,
                "count": 2965680,
                "maximum": 220418404.4,
                "minimum": 220416768.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 550.5913439,
                "variance": 303150.828
              },
              {
                "average": 0.5430046397,
                "count": 2965680,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498147252,
                "variance": 0.2481506846
              },
              {
                "average": 0,
                "count": 2965680,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2965680,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2965680,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2726841736,
                "count": 2965680,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4453398499,
                "variance": 0.1983275819
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98294.67147,
              2368899.716,
              1.423857017,
              -97799.67147,
              2369373.356,
              42.56385702
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98294.67146525712,
                    2368899.715803835,
                    1.423857017452899
                  ],
                  [
                    -98294.67146525712,
                    2369373.3558038347,
                    1.423857017452899
                  ],
                  [
                    -97799.67146525712,
                    2369373.3558038347,
                    42.563857017452904
                  ],
                  [
                    -97799.67146525712,
                    2368899.715803835,
                    42.563857017452904
                  ],
                  [
                    -98294.67146525712,
                    2368899.715803835,
                    1.423857017452899
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:44+00:00",
            "end_time": "2018-09-08T04:39:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1981.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73222146640893,
              71.27180777181503,
              3.748767331448659
            ],
            [
              -156.7327517858581,
              71.27615527820079,
              3.748767331448659
            ],
            [
              -156.71927087572567,
              71.2763421220097,
              11.96876733144866
            ],
            [
              -156.71874316652634,
              71.27199457392156,
              11.96876733144866
            ],
            [
              -156.73222146640893,
              71.27180777181503,
              3.748767331448659
            ]
          ]
        ]
      },
      "bbox": [
        -156.7327518,
        71.27180777,
        3.748767331,
        -156.7187432,
        71.27634212,
        11.96876733
      ],
      "properties": {
        "datetime": "2018-09-08T05:35:30Z",
        "pc:count": 3136550,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100114.4278,
            "count": 3136550,
            "maximum": -99868.37525,
            "minimum": -100364.0352,
            "name": "X",
            "position": 0,
            "stddev": 133.8538354,
            "variance": 17916.84924
          },
          {
            "average": 2366129.882,
            "count": 3136550,
            "maximum": 2366371.603,
            "minimum": 2365897.923,
            "name": "Y",
            "position": 1,
            "stddev": 130.7003823,
            "variance": 17082.58993
          },
          {
            "average": 8.569047187,
            "count": 3136550,
            "maximum": 11.96876733,
            "minimum": 3.748767331,
            "name": "Z",
            "position": 2,
            "stddev": 1.450194097,
            "variance": 2.103062919
          },
          {
            "average": 48178.18694,
            "count": 3136550,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7667.564409,
            "variance": 58791543.96
          },
          {
            "average": 1,
            "count": 3136550,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3136550,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4994120929,
            "count": 3136550,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997341,
            "variance": 0.2499997341
          },
          {
            "average": 0.0004686678038,
            "count": 3136550,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02164366659,
            "variance": 0.0004684483036
          },
          {
            "average": 1.330847587,
            "count": 3136550,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6650629128,
            "variance": 0.442308678
          },
          {
            "average": -0.8441790077,
            "count": 3136550,
            "maximum": 16.25399971,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.31810567,
            "variance": 106.4633047
          },
          {
            "average": 0.4532384308,
            "count": 3136550,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978086326,
            "variance": 0.2478134347
          },
          {
            "average": 413.4889889,
            "count": 3136550,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9770561638,
            "variance": 0.9546387473
          },
          {
            "average": 220419231.8,
            "count": 3136550,
            "maximum": 220420130,
            "minimum": 220418332.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 550.0765933,
            "variance": 302584.2585
          },
          {
            "average": 0.4532384308,
            "count": 3136550,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978086326,
            "variance": 0.2478134347
          },
          {
            "average": 0,
            "count": 3136550,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136550,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3136550,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2244708358,
            "count": 3136550,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4172334301,
            "variance": 0.1740837352
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100364.0352,
          2365897.923,
          3.748767331,
          -99868.37525,
          2366371.603,
          11.96876733
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100364.0352487547,
                2365897.9233120405,
                3.748767331448659
              ],
              [
                -100364.0352487547,
                2366371.60331204,
                3.748767331448659
              ],
              [
                -99868.3752487547,
                2366371.60331204,
                11.96876733144866
              ],
              [
                -99868.3752487547,
                2365897.9233120405,
                11.96876733144866
              ],
              [
                -100364.0352487547,
                2365897.9233120405,
                3.748767331448659
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:35:30+00:00",
        "end_time": "2018-09-08T05:05:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1981.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1981.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1981.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1981.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7327518,
            71.27180777,
            3.748767331,
            -156.7187432,
            71.27634212,
            11.96876733
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73222146640893,
                  71.27180777181503,
                  3.748767331448659
                ],
                [
                  -156.7327517858581,
                  71.27615527820079,
                  3.748767331448659
                ],
                [
                  -156.71927087572567,
                  71.2763421220097,
                  11.96876733144866
                ],
                [
                  -156.71874316652634,
                  71.27199457392156,
                  11.96876733144866
                ],
                [
                  -156.73222146640893,
                  71.27180777181503,
                  3.748767331448659
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1981.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1981.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:35:30Z",
            "pc:count": 3136550,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100114.4278,
                "count": 3136550,
                "maximum": -99868.37525,
                "minimum": -100364.0352,
                "name": "X",
                "position": 0,
                "stddev": 133.8538354,
                "variance": 17916.84924
              },
              {
                "average": 2366129.882,
                "count": 3136550,
                "maximum": 2366371.603,
                "minimum": 2365897.923,
                "name": "Y",
                "position": 1,
                "stddev": 130.7003823,
                "variance": 17082.58993
              },
              {
                "average": 8.569047187,
                "count": 3136550,
                "maximum": 11.96876733,
                "minimum": 3.748767331,
                "name": "Z",
                "position": 2,
                "stddev": 1.450194097,
                "variance": 2.103062919
              },
              {
                "average": 48178.18694,
                "count": 3136550,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7667.564409,
                "variance": 58791543.96
              },
              {
                "average": 1,
                "count": 3136550,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3136550,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4994120929,
                "count": 3136550,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997341,
                "variance": 0.2499997341
              },
              {
                "average": 0.0004686678038,
                "count": 3136550,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02164366659,
                "variance": 0.0004684483036
              },
              {
                "average": 1.330847587,
                "count": 3136550,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6650629128,
                "variance": 0.442308678
              },
              {
                "average": -0.8441790077,
                "count": 3136550,
                "maximum": 16.25399971,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.31810567,
                "variance": 106.4633047
              },
              {
                "average": 0.4532384308,
                "count": 3136550,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978086326,
                "variance": 0.2478134347
              },
              {
                "average": 413.4889889,
                "count": 3136550,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9770561638,
                "variance": 0.9546387473
              },
              {
                "average": 220419231.8,
                "count": 3136550,
                "maximum": 220420130,
                "minimum": 220418332.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 550.0765933,
                "variance": 302584.2585
              },
              {
                "average": 0.4532384308,
                "count": 3136550,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978086326,
                "variance": 0.2478134347
              },
              {
                "average": 0,
                "count": 3136550,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136550,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3136550,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2244708358,
                "count": 3136550,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4172334301,
                "variance": 0.1740837352
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100364.0352,
              2365897.923,
              3.748767331,
              -99868.37525,
              2366371.603,
              11.96876733
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100364.0352487547,
                    2365897.9233120405,
                    3.748767331448659
                  ],
                  [
                    -100364.0352487547,
                    2366371.60331204,
                    3.748767331448659
                  ],
                  [
                    -99868.3752487547,
                    2366371.60331204,
                    11.96876733144866
                  ],
                  [
                    -99868.3752487547,
                    2365897.9233120405,
                    11.96876733144866
                  ],
                  [
                    -100364.0352487547,
                    2365897.9233120405,
                    3.748767331448659
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:35:30+00:00",
            "end_time": "2018-09-08T05:05:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2168.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8024222080116,
              71.29695964698833,
              0.889671990236331
            ],
            [
              -156.8027981316542,
              71.299961449086,
              0.889671990236331
            ],
            [
              -156.79430376344243,
              71.30008220768254,
              1.529671990236331
            ],
            [
              -156.79392897640776,
              71.29708038694815,
              1.529671990236331
            ],
            [
              -156.8024222080116,
              71.29695964698833,
              0.889671990236331
            ]
          ]
        ]
      },
      "bbox": [
        -156.8027981,
        71.29695965,
        0.8896719902,
        -156.793929,
        71.30008221,
        1.52967199
      ],
      "properties": {
        "datetime": "2018-09-08T04:02:40Z",
        "pc:count": 443725,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102629.1104,
            "count": 443725,
            "maximum": -102513.7422,
            "minimum": -102825.7422,
            "name": "X",
            "position": 0,
            "stddev": 74.30061859,
            "variance": 5520.581923
          },
          {
            "average": 2368861.974,
            "count": 443725,
            "maximum": 2369067.856,
            "minimum": 2368740.836,
            "name": "Y",
            "position": 1,
            "stddev": 78.11205094,
            "variance": 6101.492502
          },
          {
            "average": 1.155605485,
            "count": 443725,
            "maximum": 1.52967199,
            "minimum": 0.8896719902,
            "name": "Z",
            "position": 2,
            "stddev": 0.06540747925,
            "variance": 0.004278138341
          },
          {
            "average": 13671.75701,
            "count": 443725,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9015.76994,
            "variance": 81284107.6
          },
          {
            "average": 1,
            "count": 443725,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 443725,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4896050482,
            "count": 443725,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998924966,
            "variance": 0.2498925081
          },
          {
            "average": 0.0006738407798,
            "count": 443725,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02594972516,
            "variance": 0.0006733882359
          },
          {
            "average": 7.737682123,
            "count": 443725,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.351007788,
            "variance": 5.527237621
          },
          {
            "average": 4.770589054,
            "count": 443725,
            "maximum": 11.40600014,
            "minimum": -15.74400043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.180500854,
            "variance": 26.83758909
          },
          {
            "average": 0.4757879317,
            "count": 443725,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994139944,
            "variance": 0.2494143378
          },
          {
            "average": 403.4073965,
            "count": 443725,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5917198199,
            "variance": 0.3501323453
          },
          {
            "average": 220413595.2,
            "count": 443725,
            "maximum": 220414560.2,
            "minimum": 220412738.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 276.719046,
            "variance": 76573.43043
          },
          {
            "average": 0.4757879317,
            "count": 443725,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994139944,
            "variance": 0.2494143378
          },
          {
            "average": 0,
            "count": 443725,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 443725,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 443725,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05433545552,
            "count": 443725,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2266786924,
            "variance": 0.05138322959
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102825.7422,
          2368740.836,
          0.8896719902,
          -102513.7422,
          2369067.856,
          1.52967199
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102825.74218077221,
                2368740.835950737,
                0.889671990236331
              ],
              [
                -102825.74218077221,
                2369067.8559507364,
                0.889671990236331
              ],
              [
                -102513.74218077221,
                2369067.8559507364,
                1.529671990236331
              ],
              [
                -102513.74218077221,
                2368740.835950737,
                1.529671990236331
              ],
              [
                -102825.74218077221,
                2368740.835950737,
                0.889671990236331
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:02:40+00:00",
        "end_time": "2018-09-08T03:32:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2168.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2168.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2168.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2168.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8027981,
            71.29695965,
            0.8896719902,
            -156.793929,
            71.30008221,
            1.52967199
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8024222080116,
                  71.29695964698833,
                  0.889671990236331
                ],
                [
                  -156.8027981316542,
                  71.299961449086,
                  0.889671990236331
                ],
                [
                  -156.79430376344243,
                  71.30008220768254,
                  1.529671990236331
                ],
                [
                  -156.79392897640776,
                  71.29708038694815,
                  1.529671990236331
                ],
                [
                  -156.8024222080116,
                  71.29695964698833,
                  0.889671990236331
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2168.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2168.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:02:40Z",
            "pc:count": 443725,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102629.1104,
                "count": 443725,
                "maximum": -102513.7422,
                "minimum": -102825.7422,
                "name": "X",
                "position": 0,
                "stddev": 74.30061859,
                "variance": 5520.581923
              },
              {
                "average": 2368861.974,
                "count": 443725,
                "maximum": 2369067.856,
                "minimum": 2368740.836,
                "name": "Y",
                "position": 1,
                "stddev": 78.11205094,
                "variance": 6101.492502
              },
              {
                "average": 1.155605485,
                "count": 443725,
                "maximum": 1.52967199,
                "minimum": 0.8896719902,
                "name": "Z",
                "position": 2,
                "stddev": 0.06540747925,
                "variance": 0.004278138341
              },
              {
                "average": 13671.75701,
                "count": 443725,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9015.76994,
                "variance": 81284107.6
              },
              {
                "average": 1,
                "count": 443725,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 443725,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4896050482,
                "count": 443725,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998924966,
                "variance": 0.2498925081
              },
              {
                "average": 0.0006738407798,
                "count": 443725,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02594972516,
                "variance": 0.0006733882359
              },
              {
                "average": 7.737682123,
                "count": 443725,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.351007788,
                "variance": 5.527237621
              },
              {
                "average": 4.770589054,
                "count": 443725,
                "maximum": 11.40600014,
                "minimum": -15.74400043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.180500854,
                "variance": 26.83758909
              },
              {
                "average": 0.4757879317,
                "count": 443725,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994139944,
                "variance": 0.2494143378
              },
              {
                "average": 403.4073965,
                "count": 443725,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5917198199,
                "variance": 0.3501323453
              },
              {
                "average": 220413595.2,
                "count": 443725,
                "maximum": 220414560.2,
                "minimum": 220412738.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 276.719046,
                "variance": 76573.43043
              },
              {
                "average": 0.4757879317,
                "count": 443725,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994139944,
                "variance": 0.2494143378
              },
              {
                "average": 0,
                "count": 443725,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 443725,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 443725,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05433545552,
                "count": 443725,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2266786924,
                "variance": 0.05138322959
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102825.7422,
              2368740.836,
              0.8896719902,
              -102513.7422,
              2369067.856,
              1.52967199
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102825.74218077221,
                    2368740.835950737,
                    0.889671990236331
                  ],
                  [
                    -102825.74218077221,
                    2369067.8559507364,
                    0.889671990236331
                  ],
                  [
                    -102513.74218077221,
                    2369067.8559507364,
                    1.529671990236331
                  ],
                  [
                    -102513.74218077221,
                    2368740.835950737,
                    1.529671990236331
                  ],
                  [
                    -102825.74218077221,
                    2368740.835950737,
                    0.889671990236331
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:02:40+00:00",
            "end_time": "2018-09-08T03:32:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2140.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.81083476656994,
              71.29300837752169,
              0.905029634837577
            ],
            [
              -156.81104490746412,
              71.29468169584317,
              0.905029634837577
            ],
            [
              -156.80740955196177,
              71.29473358503982,
              1.505029634837577
            ],
            [
              -156.80719968218202,
              71.29306026225541,
              1.505029634837577
            ],
            [
              -156.81083476656994,
              71.29300837752169,
              0.905029634837577
            ]
          ]
        ]
      },
      "bbox": [
        -156.8110449,
        71.29300838,
        0.9050296348,
        -156.8071997,
        71.29473359,
        1.505029635
      ],
      "properties": {
        "datetime": "2018-09-08T04:02:51Z",
        "pc:count": 91380,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103066.1537,
            "count": 91380,
            "maximum": -103018.8673,
            "minimum": -103152.4273,
            "name": "X",
            "position": 0,
            "stddev": 29.93013479,
            "variance": 895.8129685
          },
          {
            "average": 2368388.192,
            "count": 91380,
            "maximum": 2368506.483,
            "minimum": 2368324.183,
            "name": "Y",
            "position": 1,
            "stddev": 42.5064925,
            "variance": 1806.801905
          },
          {
            "average": 1.159587525,
            "count": 91380,
            "maximum": 1.505029635,
            "minimum": 0.9050296348,
            "name": "Z",
            "position": 2,
            "stddev": 0.07168121295,
            "variance": 0.00513819629
          },
          {
            "average": 13616.64822,
            "count": 91380,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9420.965581,
            "variance": 88754592.48
          },
          {
            "average": 1,
            "count": 91380,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 91380,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4897351718,
            "count": 91380,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998973575,
            "variance": 0.249897368
          },
          {
            "average": 0.000689428759,
            "count": 91380,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02624806634,
            "variance": 0.0006889609865
          },
          {
            "average": 7.591529875,
            "count": 91380,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.497982736,
            "variance": 6.239917751
          },
          {
            "average": 4.439128891,
            "count": 91380,
            "maximum": 11.95199966,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.001511058,
            "variance": 36.01813498
          },
          {
            "average": 0.4743707595,
            "count": 91380,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993454423,
            "variance": 0.2493458707
          },
          {
            "average": 403.657726,
            "count": 91380,
            "maximum": 405,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6096551804,
            "variance": 0.371679439
          },
          {
            "average": 220413726.6,
            "count": 91380,
            "maximum": 220414571.3,
            "minimum": 220413459.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 293.3716446,
            "variance": 86066.92188
          },
          {
            "average": 0.4743707595,
            "count": 91380,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993454423,
            "variance": 0.2493458707
          },
          {
            "average": 0,
            "count": 91380,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 91380,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 91380,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06828627708,
            "count": 91380,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.252237899,
            "variance": 0.0636239577
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103152.4273,
          2368324.183,
          0.9050296348,
          -103018.8673,
          2368506.483,
          1.505029635
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103152.42725822233,
                2368324.183016836,
                0.905029634837577
              ],
              [
                -103152.42725822233,
                2368506.483016836,
                0.905029634837577
              ],
              [
                -103018.86725822234,
                2368506.483016836,
                1.505029634837577
              ],
              [
                -103018.86725822234,
                2368324.183016836,
                1.505029634837577
              ],
              [
                -103152.42725822233,
                2368324.183016836,
                0.905029634837577
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:02:51+00:00",
        "end_time": "2018-09-08T03:44:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2140.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2140.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2140.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2140.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8110449,
            71.29300838,
            0.9050296348,
            -156.8071997,
            71.29473359,
            1.505029635
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.81083476656994,
                  71.29300837752169,
                  0.905029634837577
                ],
                [
                  -156.81104490746412,
                  71.29468169584317,
                  0.905029634837577
                ],
                [
                  -156.80740955196177,
                  71.29473358503982,
                  1.505029634837577
                ],
                [
                  -156.80719968218202,
                  71.29306026225541,
                  1.505029634837577
                ],
                [
                  -156.81083476656994,
                  71.29300837752169,
                  0.905029634837577
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2140.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2140.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:02:51Z",
            "pc:count": 91380,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103066.1537,
                "count": 91380,
                "maximum": -103018.8673,
                "minimum": -103152.4273,
                "name": "X",
                "position": 0,
                "stddev": 29.93013479,
                "variance": 895.8129685
              },
              {
                "average": 2368388.192,
                "count": 91380,
                "maximum": 2368506.483,
                "minimum": 2368324.183,
                "name": "Y",
                "position": 1,
                "stddev": 42.5064925,
                "variance": 1806.801905
              },
              {
                "average": 1.159587525,
                "count": 91380,
                "maximum": 1.505029635,
                "minimum": 0.9050296348,
                "name": "Z",
                "position": 2,
                "stddev": 0.07168121295,
                "variance": 0.00513819629
              },
              {
                "average": 13616.64822,
                "count": 91380,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9420.965581,
                "variance": 88754592.48
              },
              {
                "average": 1,
                "count": 91380,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 91380,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4897351718,
                "count": 91380,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998973575,
                "variance": 0.249897368
              },
              {
                "average": 0.000689428759,
                "count": 91380,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02624806634,
                "variance": 0.0006889609865
              },
              {
                "average": 7.591529875,
                "count": 91380,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.497982736,
                "variance": 6.239917751
              },
              {
                "average": 4.439128891,
                "count": 91380,
                "maximum": 11.95199966,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.001511058,
                "variance": 36.01813498
              },
              {
                "average": 0.4743707595,
                "count": 91380,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993454423,
                "variance": 0.2493458707
              },
              {
                "average": 403.657726,
                "count": 91380,
                "maximum": 405,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6096551804,
                "variance": 0.371679439
              },
              {
                "average": 220413726.6,
                "count": 91380,
                "maximum": 220414571.3,
                "minimum": 220413459.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 293.3716446,
                "variance": 86066.92188
              },
              {
                "average": 0.4743707595,
                "count": 91380,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993454423,
                "variance": 0.2493458707
              },
              {
                "average": 0,
                "count": 91380,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 91380,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 91380,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06828627708,
                "count": 91380,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.252237899,
                "variance": 0.0636239577
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103152.4273,
              2368324.183,
              0.9050296348,
              -103018.8673,
              2368506.483,
              1.505029635
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103152.42725822233,
                    2368324.183016836,
                    0.905029634837577
                  ],
                  [
                    -103152.42725822233,
                    2368506.483016836,
                    0.905029634837577
                  ],
                  [
                    -103018.86725822234,
                    2368506.483016836,
                    1.505029634837577
                  ],
                  [
                    -103018.86725822234,
                    2368324.183016836,
                    1.505029634837577
                  ],
                  [
                    -103152.42725822233,
                    2368324.183016836,
                    0.905029634837577
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:02:51+00:00",
            "end_time": "2018-09-08T03:44:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2169.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7944557396122,
              71.29681053189404,
              0.855208490380193
            ],
            [
              -156.79499016106692,
              71.30108993920406,
              0.855208490380193
            ],
            [
              -156.78149094897395,
              71.30128113193268,
              166.9352084903802
            ],
            [
              -156.7809591026091,
              71.29700168255737,
              166.9352084903802
            ],
            [
              -156.7944557396122,
              71.29681053189404,
              0.855208490380193
            ]
          ]
        ]
      },
      "bbox": [
        -156.7949902,
        71.29681053,
        0.8552084904,
        -156.7809591,
        71.30128113,
        166.9352085
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:30Z",
        "pc:count": 1751430,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102281.2416,
            "count": 1751430,
            "maximum": -102038.4941,
            "minimum": -102534.2941,
            "name": "X",
            "position": 0,
            "stddev": 133.1440746,
            "variance": 17727.34461
          },
          {
            "average": 2368949.554,
            "count": 1751430,
            "maximum": 2369178.503,
            "minimum": 2368712.303,
            "name": "Y",
            "position": 1,
            "stddev": 125.2833294,
            "variance": 15695.91262
          },
          {
            "average": 1.165471692,
            "count": 1751430,
            "maximum": 166.9352085,
            "minimum": 0.8552084904,
            "name": "Z",
            "position": 2,
            "stddev": 0.1421372945,
            "variance": 0.0202030105
          },
          {
            "average": 13827.73395,
            "count": 1751430,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10521.55867,
            "variance": 110703196.8
          },
          {
            "average": 1,
            "count": 1751430,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1751430,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4963344239,
            "count": 1751430,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999867061,
            "variance": 0.2499867063
          },
          {
            "average": 0.0006434741897,
            "count": 1751430,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02535863754,
            "variance": 0.0006430604978
          },
          {
            "average": 7.654245959,
            "count": 1751430,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.495064589,
            "variance": 6.225347302
          },
          {
            "average": 1.952091519,
            "count": 1751430,
            "maximum": 16.35000038,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.348826278,
            "variance": 54.00524767
          },
          {
            "average": 0.4848386747,
            "count": 1751430,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499770224,
            "variance": 0.2497702768
          },
          {
            "average": 403.7907242,
            "count": 1751430,
            "maximum": 406,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6980484606,
            "variance": 0.4872716534
          },
          {
            "average": 220413799.1,
            "count": 1751430,
            "maximum": 220414970.3,
            "minimum": 220412744.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 374.7715699,
            "variance": 140453.7296
          },
          {
            "average": 0.4848386747,
            "count": 1751430,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499770224,
            "variance": 0.2497702768
          },
          {
            "average": 0,
            "count": 1751430,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1751430,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1751430,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05118103493,
            "count": 1751430,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2203668857,
            "variance": 0.04856156432
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102534.2941,
          2368712.303,
          0.8552084904,
          -102038.4941,
          2369178.503,
          166.9352085
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102534.29413656832,
                2368712.3026843,
                0.855208490380193
              ],
              [
                -102534.29413656832,
                2369178.5026843003,
                0.855208490380193
              ],
              [
                -102038.49413656833,
                2369178.5026843003,
                166.9352084903802
              ],
              [
                -102038.49413656833,
                2368712.3026843,
                166.9352084903802
              ],
              [
                -102534.29413656832,
                2368712.3026843,
                0.855208490380193
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:30+00:00",
        "end_time": "2018-09-08T03:32:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2169.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2169.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2169.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2169.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7949902,
            71.29681053,
            0.8552084904,
            -156.7809591,
            71.30128113,
            166.9352085
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7944557396122,
                  71.29681053189404,
                  0.855208490380193
                ],
                [
                  -156.79499016106692,
                  71.30108993920406,
                  0.855208490380193
                ],
                [
                  -156.78149094897395,
                  71.30128113193268,
                  166.9352084903802
                ],
                [
                  -156.7809591026091,
                  71.29700168255737,
                  166.9352084903802
                ],
                [
                  -156.7944557396122,
                  71.29681053189404,
                  0.855208490380193
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2169.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2169.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:30Z",
            "pc:count": 1751430,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102281.2416,
                "count": 1751430,
                "maximum": -102038.4941,
                "minimum": -102534.2941,
                "name": "X",
                "position": 0,
                "stddev": 133.1440746,
                "variance": 17727.34461
              },
              {
                "average": 2368949.554,
                "count": 1751430,
                "maximum": 2369178.503,
                "minimum": 2368712.303,
                "name": "Y",
                "position": 1,
                "stddev": 125.2833294,
                "variance": 15695.91262
              },
              {
                "average": 1.165471692,
                "count": 1751430,
                "maximum": 166.9352085,
                "minimum": 0.8552084904,
                "name": "Z",
                "position": 2,
                "stddev": 0.1421372945,
                "variance": 0.0202030105
              },
              {
                "average": 13827.73395,
                "count": 1751430,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10521.55867,
                "variance": 110703196.8
              },
              {
                "average": 1,
                "count": 1751430,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1751430,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4963344239,
                "count": 1751430,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999867061,
                "variance": 0.2499867063
              },
              {
                "average": 0.0006434741897,
                "count": 1751430,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02535863754,
                "variance": 0.0006430604978
              },
              {
                "average": 7.654245959,
                "count": 1751430,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.495064589,
                "variance": 6.225347302
              },
              {
                "average": 1.952091519,
                "count": 1751430,
                "maximum": 16.35000038,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.348826278,
                "variance": 54.00524767
              },
              {
                "average": 0.4848386747,
                "count": 1751430,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499770224,
                "variance": 0.2497702768
              },
              {
                "average": 403.7907242,
                "count": 1751430,
                "maximum": 406,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6980484606,
                "variance": 0.4872716534
              },
              {
                "average": 220413799.1,
                "count": 1751430,
                "maximum": 220414970.3,
                "minimum": 220412744.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 374.7715699,
                "variance": 140453.7296
              },
              {
                "average": 0.4848386747,
                "count": 1751430,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499770224,
                "variance": 0.2497702768
              },
              {
                "average": 0,
                "count": 1751430,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1751430,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1751430,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05118103493,
                "count": 1751430,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2203668857,
                "variance": 0.04856156432
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102534.2941,
              2368712.303,
              0.8552084904,
              -102038.4941,
              2369178.503,
              166.9352085
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102534.29413656832,
                    2368712.3026843,
                    0.855208490380193
                  ],
                  [
                    -102534.29413656832,
                    2369178.5026843003,
                    0.855208490380193
                  ],
                  [
                    -102038.49413656833,
                    2369178.5026843003,
                    166.9352084903802
                  ],
                  [
                    -102038.49413656833,
                    2368712.3026843,
                    166.9352084903802
                  ],
                  [
                    -102534.29413656832,
                    2368712.3026843,
                    0.855208490380193
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:30+00:00",
            "end_time": "2018-09-08T03:32:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2052.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71893175192903,
              71.27991508885732,
              7.51570836218194
            ],
            [
              -156.7194595728177,
              71.28426195039509,
              7.51570836218194
            ],
            [
              -156.70596932107523,
              71.28444795350374,
              69.63570836218194
            ],
            [
              -156.70544411270302,
              71.28010105043796,
              69.63570836218194
            ],
            [
              -156.71893175192903,
              71.27991508885732,
              7.51570836218194
            ]
          ]
        ]
      },
      "bbox": [
        -156.7194596,
        71.27991509,
        7.515708362,
        -156.7054441,
        71.28444795,
        69.63570836
      ],
      "properties": {
        "datetime": "2018-09-08T05:23:58Z",
        "pc:count": 3142649,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99593.20498,
            "count": 3142649,
            "maximum": -99344.18795,
            "minimum": -99840.00795,
            "name": "X",
            "position": 0,
            "stddev": 133.6643927,
            "variance": 17866.16987
          },
          {
            "average": 2366996.869,
            "count": 3142649,
            "maximum": 2367233.298,
            "minimum": 2366759.718,
            "name": "Y",
            "position": 1,
            "stddev": 129.8912812,
            "variance": 16871.74492
          },
          {
            "average": 9.537282184,
            "count": 3142649,
            "maximum": 69.63570836,
            "minimum": 7.515708362,
            "name": "Z",
            "position": 2,
            "stddev": 0.7936348808,
            "variance": 0.629856324
          },
          {
            "average": 43478.46963,
            "count": 3142649,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10243.69663,
            "variance": 104933320.6
          },
          {
            "average": 1.000000636,
            "count": 3142649,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007977503251,
            "variance": 6.364055813e-07
          },
          {
            "average": 1.000001273,
            "count": 3142649,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00112818897,
            "variance": 1.272810353e-06
          },
          {
            "average": 0.5020665687,
            "count": 3142649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958088,
            "variance": 0.2499958088
          },
          {
            "average": 0.0004550301354,
            "count": 3142649,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.021326585,
            "variance": 0.0004548232277
          },
          {
            "average": 1.289809966,
            "count": 3142649,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4540842572,
            "variance": 0.2061925126
          },
          {
            "average": 1.703465631,
            "count": 3142649,
            "maximum": 16.38599968,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.70532422,
            "variance": 114.6039666
          },
          {
            "average": 0.5450370054,
            "count": 3142649,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979676165,
            "variance": 0.247971747
          },
          {
            "average": 412.5445976,
            "count": 3142649,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.014236208,
            "variance": 1.028675086
          },
          {
            "average": 220418717.3,
            "count": 3142649,
            "maximum": 220419438.6,
            "minimum": 220417931.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 537.3460366,
            "variance": 288740.763
          },
          {
            "average": 0.5450370054,
            "count": 3142649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979676165,
            "variance": 0.247971747
          },
          {
            "average": 0,
            "count": 3142649,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3142649,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3142649,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2795590599,
            "count": 3142649,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4487826378,
            "variance": 0.201405856
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99840.00795,
          2366759.718,
          7.515708362,
          -99344.18795,
          2367233.298,
          69.63570836
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99840.00795213328,
                2366759.7176197805,
                7.51570836218194
              ],
              [
                -99840.00795213328,
                2367233.2976197805,
                7.51570836218194
              ],
              [
                -99344.18795213327,
                2367233.2976197805,
                69.63570836218194
              ],
              [
                -99344.18795213327,
                2366759.7176197805,
                69.63570836218194
              ],
              [
                -99840.00795213328,
                2366759.7176197805,
                7.51570836218194
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:23:58+00:00",
        "end_time": "2018-09-08T04:58:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2052.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2052.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2052.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2052.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7194596,
            71.27991509,
            7.515708362,
            -156.7054441,
            71.28444795,
            69.63570836
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71893175192903,
                  71.27991508885732,
                  7.51570836218194
                ],
                [
                  -156.7194595728177,
                  71.28426195039509,
                  7.51570836218194
                ],
                [
                  -156.70596932107523,
                  71.28444795350374,
                  69.63570836218194
                ],
                [
                  -156.70544411270302,
                  71.28010105043796,
                  69.63570836218194
                ],
                [
                  -156.71893175192903,
                  71.27991508885732,
                  7.51570836218194
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2052.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2052.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:23:58Z",
            "pc:count": 3142649,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99593.20498,
                "count": 3142649,
                "maximum": -99344.18795,
                "minimum": -99840.00795,
                "name": "X",
                "position": 0,
                "stddev": 133.6643927,
                "variance": 17866.16987
              },
              {
                "average": 2366996.869,
                "count": 3142649,
                "maximum": 2367233.298,
                "minimum": 2366759.718,
                "name": "Y",
                "position": 1,
                "stddev": 129.8912812,
                "variance": 16871.74492
              },
              {
                "average": 9.537282184,
                "count": 3142649,
                "maximum": 69.63570836,
                "minimum": 7.515708362,
                "name": "Z",
                "position": 2,
                "stddev": 0.7936348808,
                "variance": 0.629856324
              },
              {
                "average": 43478.46963,
                "count": 3142649,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10243.69663,
                "variance": 104933320.6
              },
              {
                "average": 1.000000636,
                "count": 3142649,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007977503251,
                "variance": 6.364055813e-07
              },
              {
                "average": 1.000001273,
                "count": 3142649,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00112818897,
                "variance": 1.272810353e-06
              },
              {
                "average": 0.5020665687,
                "count": 3142649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958088,
                "variance": 0.2499958088
              },
              {
                "average": 0.0004550301354,
                "count": 3142649,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.021326585,
                "variance": 0.0004548232277
              },
              {
                "average": 1.289809966,
                "count": 3142649,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4540842572,
                "variance": 0.2061925126
              },
              {
                "average": 1.703465631,
                "count": 3142649,
                "maximum": 16.38599968,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.70532422,
                "variance": 114.6039666
              },
              {
                "average": 0.5450370054,
                "count": 3142649,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979676165,
                "variance": 0.247971747
              },
              {
                "average": 412.5445976,
                "count": 3142649,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.014236208,
                "variance": 1.028675086
              },
              {
                "average": 220418717.3,
                "count": 3142649,
                "maximum": 220419438.6,
                "minimum": 220417931.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 537.3460366,
                "variance": 288740.763
              },
              {
                "average": 0.5450370054,
                "count": 3142649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979676165,
                "variance": 0.247971747
              },
              {
                "average": 0,
                "count": 3142649,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3142649,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3142649,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2795590599,
                "count": 3142649,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4487826378,
                "variance": 0.201405856
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99840.00795,
              2366759.718,
              7.515708362,
              -99344.18795,
              2367233.298,
              69.63570836
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99840.00795213328,
                    2366759.7176197805,
                    7.51570836218194
                  ],
                  [
                    -99840.00795213328,
                    2367233.2976197805,
                    7.51570836218194
                  ],
                  [
                    -99344.18795213327,
                    2367233.2976197805,
                    69.63570836218194
                  ],
                  [
                    -99344.18795213327,
                    2366759.7176197805,
                    69.63570836218194
                  ],
                  [
                    -99840.00795213328,
                    2366759.7176197805,
                    7.51570836218194
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:23:58+00:00",
            "end_time": "2018-09-08T04:58:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1933.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8089833594997,
              71.26821033608411,
              5.917217505456264
            ],
            [
              -156.80952845900313,
              71.27255734394235,
              5.917217505456264
            ],
            [
              -156.79604872865838,
              71.27274946567428,
              15.597217505456264
            ],
            [
              -156.79550623827,
              71.26840241494945,
              15.597217505456264
            ],
            [
              -156.8089833594997,
              71.26821033608411,
              5.917217505456264
            ]
          ]
        ]
      },
      "bbox": [
        -156.8095285,
        71.26821034,
        5.917217505,
        -156.7955062,
        71.27274947,
        15.59721751
      ],
      "properties": {
        "datetime": "2018-09-08T04:59:56Z",
        "pc:count": 3016791,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102956.0199,
            "count": 3016791,
            "maximum": -102702.9489,
            "minimum": -103198.6689,
            "name": "X",
            "position": 0,
            "stddev": 135.899358,
            "variance": 18468.63552
          },
          {
            "average": 2365859.108,
            "count": 3016791,
            "maximum": 2366097.934,
            "minimum": 2365624.274,
            "name": "Y",
            "position": 1,
            "stddev": 128.8532533,
            "variance": 16603.16089
          },
          {
            "average": 11.55775365,
            "count": 3016791,
            "maximum": 15.59721751,
            "minimum": 5.917217505,
            "name": "Z",
            "position": 2,
            "stddev": 1.904779236,
            "variance": 3.628183937
          },
          {
            "average": 46451.62073,
            "count": 3016791,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7275.350703,
            "variance": 52930727.85
          },
          {
            "average": 1.000004309,
            "count": 3016791,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002075860669,
            "variance": 4.309197518e-06
          },
          {
            "average": 1.00000895,
            "count": 3016791,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002991626687,
            "variance": 8.949830234e-06
          },
          {
            "average": 0.4991025232,
            "count": 3016791,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992774,
            "variance": 0.2499992774
          },
          {
            "average": 0.0004169993878,
            "count": 3016791,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02041630812,
            "variance": 0.0004168256374
          },
          {
            "average": 1.327895436,
            "count": 3016791,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4704129486,
            "variance": 0.2212883422
          },
          {
            "average": -0.02124878834,
            "count": 3016791,
            "maximum": 16.37400055,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.16207309,
            "variance": 103.2677294
          },
          {
            "average": 0.4776916929,
            "count": 3016791,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995021743,
            "variance": 0.2495024221
          },
          {
            "average": 409.2052101,
            "count": 3016791,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9077014377,
            "variance": 0.8239219
          },
          {
            "average": 220416845.2,
            "count": 3016791,
            "maximum": 220417996.4,
            "minimum": 220415722.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 539.319149,
            "variance": 290865.1444
          },
          {
            "average": 0.4776916929,
            "count": 3016791,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995021743,
            "variance": 0.2495024221
          },
          {
            "average": 0,
            "count": 3016791,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3016791,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3016791,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2165449976,
            "count": 3016791,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4118899342,
            "variance": 0.1696533179
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103198.6689,
          2365624.274,
          5.917217505,
          -102702.9489,
          2366097.934,
          15.59721751
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103198.66892592995,
                2365624.2738100346,
                5.917217505456264
              ],
              [
                -103198.66892592995,
                2366097.9338100348,
                5.917217505456264
              ],
              [
                -102702.94892592994,
                2366097.9338100348,
                15.597217505456264
              ],
              [
                -102702.94892592994,
                2365624.2738100346,
                15.597217505456264
              ],
              [
                -103198.66892592995,
                2365624.2738100346,
                5.917217505456264
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:59:56+00:00",
        "end_time": "2018-09-08T04:22:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1933.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1933.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1933.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1933.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8095285,
            71.26821034,
            5.917217505,
            -156.7955062,
            71.27274947,
            15.59721751
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8089833594997,
                  71.26821033608411,
                  5.917217505456264
                ],
                [
                  -156.80952845900313,
                  71.27255734394235,
                  5.917217505456264
                ],
                [
                  -156.79604872865838,
                  71.27274946567428,
                  15.597217505456264
                ],
                [
                  -156.79550623827,
                  71.26840241494945,
                  15.597217505456264
                ],
                [
                  -156.8089833594997,
                  71.26821033608411,
                  5.917217505456264
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1933.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1933.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:59:56Z",
            "pc:count": 3016791,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102956.0199,
                "count": 3016791,
                "maximum": -102702.9489,
                "minimum": -103198.6689,
                "name": "X",
                "position": 0,
                "stddev": 135.899358,
                "variance": 18468.63552
              },
              {
                "average": 2365859.108,
                "count": 3016791,
                "maximum": 2366097.934,
                "minimum": 2365624.274,
                "name": "Y",
                "position": 1,
                "stddev": 128.8532533,
                "variance": 16603.16089
              },
              {
                "average": 11.55775365,
                "count": 3016791,
                "maximum": 15.59721751,
                "minimum": 5.917217505,
                "name": "Z",
                "position": 2,
                "stddev": 1.904779236,
                "variance": 3.628183937
              },
              {
                "average": 46451.62073,
                "count": 3016791,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7275.350703,
                "variance": 52930727.85
              },
              {
                "average": 1.000004309,
                "count": 3016791,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002075860669,
                "variance": 4.309197518e-06
              },
              {
                "average": 1.00000895,
                "count": 3016791,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002991626687,
                "variance": 8.949830234e-06
              },
              {
                "average": 0.4991025232,
                "count": 3016791,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992774,
                "variance": 0.2499992774
              },
              {
                "average": 0.0004169993878,
                "count": 3016791,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02041630812,
                "variance": 0.0004168256374
              },
              {
                "average": 1.327895436,
                "count": 3016791,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4704129486,
                "variance": 0.2212883422
              },
              {
                "average": -0.02124878834,
                "count": 3016791,
                "maximum": 16.37400055,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.16207309,
                "variance": 103.2677294
              },
              {
                "average": 0.4776916929,
                "count": 3016791,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995021743,
                "variance": 0.2495024221
              },
              {
                "average": 409.2052101,
                "count": 3016791,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9077014377,
                "variance": 0.8239219
              },
              {
                "average": 220416845.2,
                "count": 3016791,
                "maximum": 220417996.4,
                "minimum": 220415722.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 539.319149,
                "variance": 290865.1444
              },
              {
                "average": 0.4776916929,
                "count": 3016791,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995021743,
                "variance": 0.2495024221
              },
              {
                "average": 0,
                "count": 3016791,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3016791,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3016791,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2165449976,
                "count": 3016791,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4118899342,
                "variance": 0.1696533179
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103198.6689,
              2365624.274,
              5.917217505,
              -102702.9489,
              2366097.934,
              15.59721751
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103198.66892592995,
                    2365624.2738100346,
                    5.917217505456264
                  ],
                  [
                    -103198.66892592995,
                    2366097.9338100348,
                    5.917217505456264
                  ],
                  [
                    -102702.94892592994,
                    2366097.9338100348,
                    15.597217505456264
                  ],
                  [
                    -102702.94892592994,
                    2365624.2738100346,
                    15.597217505456264
                  ],
                  [
                    -103198.66892592995,
                    2365624.2738100346,
                    5.917217505456264
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:59:56+00:00",
            "end_time": "2018-09-08T04:22:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2224.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62790047045942,
              71.30386831827411,
              2.421513979010456
            ],
            [
              -156.6284111534192,
              71.30821593945471,
              2.421513979010456
            ],
            [
              -156.61490245332396,
              71.30839577490262,
              3.741513979010457
            ],
            [
              -156.61439438957535,
              71.30404811350844,
              3.741513979010457
            ],
            [
              -156.62790047045942,
              71.30386831827411,
              2.421513979010456
            ]
          ]
        ]
      },
      "bbox": [
        -156.6284112,
        71.30386832,
        2.421513979,
        -156.6143944,
        71.30839577,
        3.741513979
      ],
      "properties": {
        "datetime": "2018-09-11T17:40:59Z",
        "pc:count": 2839545,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96155.34534,
            "count": 2839545,
            "maximum": -95900.00247,
            "minimum": -96395.94247,
            "name": "X",
            "position": 0,
            "stddev": 137.6236739,
            "variance": 18940.27561
          },
          {
            "average": 2369464.188,
            "count": 2839545,
            "maximum": 2369703.96,
            "minimum": 2369230.4,
            "name": "Y",
            "position": 1,
            "stddev": 129.6979169,
            "variance": 16821.54964
          },
          {
            "average": 2.8598372,
            "count": 2839545,
            "maximum": 3.741513979,
            "minimum": 2.421513979,
            "name": "Z",
            "position": 2,
            "stddev": 0.1712257817,
            "variance": 0.02931826831
          },
          {
            "average": 29468.27795,
            "count": 2839545,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11312.10601,
            "variance": 127963742.3
          },
          {
            "average": 1,
            "count": 2839545,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2839545,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.500908068,
            "count": 2839545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992635,
            "variance": 0.2499992635
          },
          {
            "average": 0.0004683848997,
            "count": 2839545,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0216371366,
            "variance": 0.0004681656802
          },
          {
            "average": 1.321788526,
            "count": 2839545,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4671850571,
            "variance": 0.2182618775
          },
          {
            "average": -0.684765336,
            "count": 2839545,
            "maximum": 16.44000053,
            "minimum": -19.38599968,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.35130921,
            "variance": 107.1496024
          },
          {
            "average": 0.4829671655,
            "count": 2839545,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997098863,
            "variance": 0.2497099705
          },
          {
            "average": 413.2213245,
            "count": 2839545,
            "maximum": 455,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 2.197451075,
            "variance": 4.828791227
          },
          {
            "average": 220419716.1,
            "count": 2839545,
            "maximum": 220722859.7,
            "minimum": 220417861.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 14409.07962,
            "variance": 207621575.4
          },
          {
            "average": 0.4829671655,
            "count": 2839545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997098863,
            "variance": 0.2497099705
          },
          {
            "average": 0,
            "count": 2839545,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2839545,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2839545,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2319072246,
            "count": 2839545,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4220501469,
            "variance": 0.1781263265
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96395.94247,
          2369230.4,
          2.421513979,
          -95900.00247,
          2369703.96,
          3.741513979
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96395.94247308777,
                2369230.399648241,
                2.421513979010456
              ],
              [
                -96395.94247308777,
                2369703.9596482404,
                2.421513979010456
              ],
              [
                -95900.00247308776,
                2369703.9596482404,
                3.741513979010457
              ],
              [
                -95900.00247308776,
                2369230.399648241,
                3.741513979010457
              ],
              [
                -96395.94247308777,
                2369230.399648241,
                2.421513979010456
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:40:59+00:00",
        "end_time": "2018-09-08T04:57:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2224.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2224.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2224.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2224.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6284112,
            71.30386832,
            2.421513979,
            -156.6143944,
            71.30839577,
            3.741513979
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62790047045942,
                  71.30386831827411,
                  2.421513979010456
                ],
                [
                  -156.6284111534192,
                  71.30821593945471,
                  2.421513979010456
                ],
                [
                  -156.61490245332396,
                  71.30839577490262,
                  3.741513979010457
                ],
                [
                  -156.61439438957535,
                  71.30404811350844,
                  3.741513979010457
                ],
                [
                  -156.62790047045942,
                  71.30386831827411,
                  2.421513979010456
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2224.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2224.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:40:59Z",
            "pc:count": 2839545,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96155.34534,
                "count": 2839545,
                "maximum": -95900.00247,
                "minimum": -96395.94247,
                "name": "X",
                "position": 0,
                "stddev": 137.6236739,
                "variance": 18940.27561
              },
              {
                "average": 2369464.188,
                "count": 2839545,
                "maximum": 2369703.96,
                "minimum": 2369230.4,
                "name": "Y",
                "position": 1,
                "stddev": 129.6979169,
                "variance": 16821.54964
              },
              {
                "average": 2.8598372,
                "count": 2839545,
                "maximum": 3.741513979,
                "minimum": 2.421513979,
                "name": "Z",
                "position": 2,
                "stddev": 0.1712257817,
                "variance": 0.02931826831
              },
              {
                "average": 29468.27795,
                "count": 2839545,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11312.10601,
                "variance": 127963742.3
              },
              {
                "average": 1,
                "count": 2839545,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2839545,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.500908068,
                "count": 2839545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992635,
                "variance": 0.2499992635
              },
              {
                "average": 0.0004683848997,
                "count": 2839545,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0216371366,
                "variance": 0.0004681656802
              },
              {
                "average": 1.321788526,
                "count": 2839545,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4671850571,
                "variance": 0.2182618775
              },
              {
                "average": -0.684765336,
                "count": 2839545,
                "maximum": 16.44000053,
                "minimum": -19.38599968,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.35130921,
                "variance": 107.1496024
              },
              {
                "average": 0.4829671655,
                "count": 2839545,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997098863,
                "variance": 0.2497099705
              },
              {
                "average": 413.2213245,
                "count": 2839545,
                "maximum": 455,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 2.197451075,
                "variance": 4.828791227
              },
              {
                "average": 220419716.1,
                "count": 2839545,
                "maximum": 220722859.7,
                "minimum": 220417861.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 14409.07962,
                "variance": 207621575.4
              },
              {
                "average": 0.4829671655,
                "count": 2839545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997098863,
                "variance": 0.2497099705
              },
              {
                "average": 0,
                "count": 2839545,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2839545,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2839545,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2319072246,
                "count": 2839545,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4220501469,
                "variance": 0.1781263265
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96395.94247,
              2369230.4,
              2.421513979,
              -95900.00247,
              2369703.96,
              3.741513979
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96395.94247308777,
                    2369230.399648241,
                    2.421513979010456
                  ],
                  [
                    -96395.94247308777,
                    2369703.9596482404,
                    2.421513979010456
                  ],
                  [
                    -95900.00247308776,
                    2369703.9596482404,
                    3.741513979010457
                  ],
                  [
                    -95900.00247308776,
                    2369230.399648241,
                    3.741513979010457
                  ],
                  [
                    -96395.94247308777,
                    2369230.399648241,
                    2.421513979010456
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:40:59+00:00",
            "end_time": "2018-09-08T04:57:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2141.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80747313236824,
              71.29279329899478,
              0.842271605951956
            ],
            [
              -156.80800600675715,
              71.29704116207786,
              0.842271605951956
            ],
            [
              -156.7945137019735,
              71.2972331797835,
              1.542271605951956
            ],
            [
              -156.79398338195432,
              71.29298527477481,
              1.542271605951956
            ],
            [
              -156.80747313236824,
              71.29279329899478,
              0.842271605951956
            ]
          ]
        ]
      },
      "bbox": [
        -156.808006,
        71.2927933,
        0.842271606,
        -156.7939834,
        71.29723318,
        1.542271606
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:18Z",
        "pc:count": 1597423,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102763.5782,
            "count": 1597423,
            "maximum": -102534.4844,
            "minimum": -103030.1244,
            "name": "X",
            "position": 0,
            "stddev": 127.4463172,
            "variance": 16242.56378
          },
          {
            "average": 2368516.271,
            "count": 1597423,
            "maximum": 2368758.355,
            "minimum": 2368295.575,
            "name": "Y",
            "position": 1,
            "stddev": 122.6262707,
            "variance": 15037.20226
          },
          {
            "average": 1.169475258,
            "count": 1597423,
            "maximum": 1.542271606,
            "minimum": 0.842271606,
            "name": "Z",
            "position": 2,
            "stddev": 0.07138867613,
            "variance": 0.00509634308
          },
          {
            "average": 13537.46136,
            "count": 1597423,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9941.259628,
            "variance": 98828642.99
          },
          {
            "average": 1,
            "count": 1597423,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1597423,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4978355764,
            "count": 1597423,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999954717,
            "variance": 0.2499954718
          },
          {
            "average": 0.0005953338596,
            "count": 1597423,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02439220797,
            "variance": 0.0005949798097
          },
          {
            "average": 7.51737705,
            "count": 1597423,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.6290581,
            "variance": 6.911946492
          },
          {
            "average": 1.503875218,
            "count": 1597423,
            "maximum": 16.27199936,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.765166081,
            "variance": 60.29780427
          },
          {
            "average": 0.487045072,
            "count": 1597423,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998322981,
            "variance": 0.2498323262
          },
          {
            "average": 403.8719018,
            "count": 1597423,
            "maximum": 406,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7014463168,
            "variance": 0.4920269353
          },
          {
            "average": 220413847.1,
            "count": 1597423,
            "maximum": 220414958.9,
            "minimum": 220412736.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 383.0219102,
            "variance": 146705.7837
          },
          {
            "average": 0.487045072,
            "count": 1597423,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998322981,
            "variance": 0.2498323262
          },
          {
            "average": 0,
            "count": 1597423,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1597423,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1597423,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05473878866,
            "count": 1597423,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2274697476,
            "variance": 0.05174248607
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103030.1244,
          2368295.575,
          0.842271606,
          -102534.4844,
          2368758.355,
          1.542271606
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103030.1244378871,
                2368295.5746859103,
                0.842271605951956
              ],
              [
                -103030.1244378871,
                2368758.3546859105,
                0.842271605951956
              ],
              [
                -102534.48443788709,
                2368758.3546859105,
                1.542271605951956
              ],
              [
                -102534.48443788709,
                2368295.5746859103,
                1.542271605951956
              ],
              [
                -103030.1244378871,
                2368295.5746859103,
                0.842271605951956
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:18+00:00",
        "end_time": "2018-09-08T03:32:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2141.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2141.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2141.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2141.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.808006,
            71.2927933,
            0.842271606,
            -156.7939834,
            71.29723318,
            1.542271606
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80747313236824,
                  71.29279329899478,
                  0.842271605951956
                ],
                [
                  -156.80800600675715,
                  71.29704116207786,
                  0.842271605951956
                ],
                [
                  -156.7945137019735,
                  71.2972331797835,
                  1.542271605951956
                ],
                [
                  -156.79398338195432,
                  71.29298527477481,
                  1.542271605951956
                ],
                [
                  -156.80747313236824,
                  71.29279329899478,
                  0.842271605951956
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2141.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2141.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:18Z",
            "pc:count": 1597423,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102763.5782,
                "count": 1597423,
                "maximum": -102534.4844,
                "minimum": -103030.1244,
                "name": "X",
                "position": 0,
                "stddev": 127.4463172,
                "variance": 16242.56378
              },
              {
                "average": 2368516.271,
                "count": 1597423,
                "maximum": 2368758.355,
                "minimum": 2368295.575,
                "name": "Y",
                "position": 1,
                "stddev": 122.6262707,
                "variance": 15037.20226
              },
              {
                "average": 1.169475258,
                "count": 1597423,
                "maximum": 1.542271606,
                "minimum": 0.842271606,
                "name": "Z",
                "position": 2,
                "stddev": 0.07138867613,
                "variance": 0.00509634308
              },
              {
                "average": 13537.46136,
                "count": 1597423,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9941.259628,
                "variance": 98828642.99
              },
              {
                "average": 1,
                "count": 1597423,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1597423,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4978355764,
                "count": 1597423,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999954717,
                "variance": 0.2499954718
              },
              {
                "average": 0.0005953338596,
                "count": 1597423,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02439220797,
                "variance": 0.0005949798097
              },
              {
                "average": 7.51737705,
                "count": 1597423,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.6290581,
                "variance": 6.911946492
              },
              {
                "average": 1.503875218,
                "count": 1597423,
                "maximum": 16.27199936,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.765166081,
                "variance": 60.29780427
              },
              {
                "average": 0.487045072,
                "count": 1597423,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998322981,
                "variance": 0.2498323262
              },
              {
                "average": 403.8719018,
                "count": 1597423,
                "maximum": 406,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7014463168,
                "variance": 0.4920269353
              },
              {
                "average": 220413847.1,
                "count": 1597423,
                "maximum": 220414958.9,
                "minimum": 220412736.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 383.0219102,
                "variance": 146705.7837
              },
              {
                "average": 0.487045072,
                "count": 1597423,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998322981,
                "variance": 0.2498323262
              },
              {
                "average": 0,
                "count": 1597423,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1597423,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1597423,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05473878866,
                "count": 1597423,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2274697476,
                "variance": 0.05174248607
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103030.1244,
              2368295.575,
              0.842271606,
              -102534.4844,
              2368758.355,
              1.542271606
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103030.1244378871,
                    2368295.5746859103,
                    0.842271605951956
                  ],
                  [
                    -103030.1244378871,
                    2368758.3546859105,
                    0.842271605951956
                  ],
                  [
                    -102534.48443788709,
                    2368758.3546859105,
                    1.542271605951956
                  ],
                  [
                    -102534.48443788709,
                    2368295.5746859103,
                    1.542271605951956
                  ],
                  [
                    -103030.1244378871,
                    2368295.5746859103,
                    0.842271605951956
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:18+00:00",
            "end_time": "2018-09-08T03:32:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2153.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65429931165127,
              71.2917614747185,
              3.583673589285732
            ],
            [
              -156.65481488671003,
              71.29610903849526,
              3.583673589285732
            ],
            [
              -156.64131424644324,
              71.29629066226099,
              7.963673589285731
            ],
            [
              -156.64080128771502,
              71.29194305789967,
              7.963673589285731
            ],
            [
              -156.65429931165127,
              71.2917614747185,
              3.583673589285732
            ]
          ]
        ]
      },
      "bbox": [
        -156.6548149,
        71.29176147,
        3.583673589,
        -156.6408013,
        71.29629066,
        7.963673589
      ],
      "properties": {
        "datetime": "2018-09-11T17:49:20Z",
        "pc:count": 3727776,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97162.51351,
            "count": 3727776,
            "maximum": -96920.51869,
            "minimum": -97416.43869,
            "name": "X",
            "position": 0,
            "stddev": 134.699772,
            "variance": 18144.02858
          },
          {
            "average": 2368184.946,
            "count": 3727776,
            "maximum": 2368425.797,
            "minimum": 2367952.197,
            "name": "Y",
            "position": 1,
            "stddev": 124.7403787,
            "variance": 15560.16208
          },
          {
            "average": 6.503979088,
            "count": 3727776,
            "maximum": 7.963673589,
            "minimum": 3.583673589,
            "name": "Z",
            "position": 2,
            "stddev": 1.047769294,
            "variance": 1.097820494
          },
          {
            "average": 44896.13721,
            "count": 3727776,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10815.91352,
            "variance": 116983985.2
          },
          {
            "average": 1,
            "count": 3727776,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3727776,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5049565746,
            "count": 3727776,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999754988,
            "variance": 0.2499754994
          },
          {
            "average": 0.0004614011142,
            "count": 3727776,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0214752962,
            "variance": 0.000461188347
          },
          {
            "average": 1.279017301,
            "count": 3727776,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4489644593,
            "variance": 0.2015690857
          },
          {
            "average": -1.182114278,
            "count": 3727776,
            "maximum": 16.47599983,
            "minimum": -19.61400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.95378844,
            "variance": 119.9854813
          },
          {
            "average": 0.5037604191,
            "count": 3727776,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999859261,
            "variance": 0.2499859263
          },
          {
            "average": 418.7322586,
            "count": 3727776,
            "maximum": 457,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.3294874,
            "variance": 177.6752343
          },
          {
            "average": 220452314.1,
            "count": 3727776,
            "maximum": 220723360.8,
            "minimum": 220418397,
            "name": "GpsTime",
            "position": 12,
            "stddev": 94213.88526,
            "variance": 8876256176
          },
          {
            "average": 0.5037604191,
            "count": 3727776,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999859261,
            "variance": 0.2499859263
          },
          {
            "average": 0,
            "count": 3727776,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3727776,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3727776,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2292055639,
            "count": 3727776,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4203218062,
            "variance": 0.1766704207
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97416.43869,
          2367952.197,
          3.583673589,
          -96920.51869,
          2368425.797,
          7.963673589
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97416.43868815516,
                2367952.196586174,
                3.583673589285732
              ],
              [
                -97416.43868815516,
                2368425.7965861736,
                3.583673589285732
              ],
              [
                -96920.51868815515,
                2368425.7965861736,
                7.963673589285731
              ],
              [
                -96920.51868815515,
                2367952.196586174,
                7.963673589285731
              ],
              [
                -97416.43868815516,
                2367952.196586174,
                3.583673589285732
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:49:20+00:00",
        "end_time": "2018-09-08T05:06:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2153.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2153.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2153.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2153.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6548149,
            71.29176147,
            3.583673589,
            -156.6408013,
            71.29629066,
            7.963673589
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65429931165127,
                  71.2917614747185,
                  3.583673589285732
                ],
                [
                  -156.65481488671003,
                  71.29610903849526,
                  3.583673589285732
                ],
                [
                  -156.64131424644324,
                  71.29629066226099,
                  7.963673589285731
                ],
                [
                  -156.64080128771502,
                  71.29194305789967,
                  7.963673589285731
                ],
                [
                  -156.65429931165127,
                  71.2917614747185,
                  3.583673589285732
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2153.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2153.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:49:20Z",
            "pc:count": 3727776,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97162.51351,
                "count": 3727776,
                "maximum": -96920.51869,
                "minimum": -97416.43869,
                "name": "X",
                "position": 0,
                "stddev": 134.699772,
                "variance": 18144.02858
              },
              {
                "average": 2368184.946,
                "count": 3727776,
                "maximum": 2368425.797,
                "minimum": 2367952.197,
                "name": "Y",
                "position": 1,
                "stddev": 124.7403787,
                "variance": 15560.16208
              },
              {
                "average": 6.503979088,
                "count": 3727776,
                "maximum": 7.963673589,
                "minimum": 3.583673589,
                "name": "Z",
                "position": 2,
                "stddev": 1.047769294,
                "variance": 1.097820494
              },
              {
                "average": 44896.13721,
                "count": 3727776,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10815.91352,
                "variance": 116983985.2
              },
              {
                "average": 1,
                "count": 3727776,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3727776,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5049565746,
                "count": 3727776,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999754988,
                "variance": 0.2499754994
              },
              {
                "average": 0.0004614011142,
                "count": 3727776,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0214752962,
                "variance": 0.000461188347
              },
              {
                "average": 1.279017301,
                "count": 3727776,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4489644593,
                "variance": 0.2015690857
              },
              {
                "average": -1.182114278,
                "count": 3727776,
                "maximum": 16.47599983,
                "minimum": -19.61400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.95378844,
                "variance": 119.9854813
              },
              {
                "average": 0.5037604191,
                "count": 3727776,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999859261,
                "variance": 0.2499859263
              },
              {
                "average": 418.7322586,
                "count": 3727776,
                "maximum": 457,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.3294874,
                "variance": 177.6752343
              },
              {
                "average": 220452314.1,
                "count": 3727776,
                "maximum": 220723360.8,
                "minimum": 220418397,
                "name": "GpsTime",
                "position": 12,
                "stddev": 94213.88526,
                "variance": 8876256176
              },
              {
                "average": 0.5037604191,
                "count": 3727776,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999859261,
                "variance": 0.2499859263
              },
              {
                "average": 0,
                "count": 3727776,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3727776,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3727776,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2292055639,
                "count": 3727776,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4203218062,
                "variance": 0.1766704207
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97416.43869,
              2367952.197,
              3.583673589,
              -96920.51869,
              2368425.797,
              7.963673589
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97416.43868815516,
                    2367952.196586174,
                    3.583673589285732
                  ],
                  [
                    -97416.43868815516,
                    2368425.7965861736,
                    3.583673589285732
                  ],
                  [
                    -96920.51868815515,
                    2368425.7965861736,
                    7.963673589285731
                  ],
                  [
                    -96920.51868815515,
                    2367952.196586174,
                    7.963673589285731
                  ],
                  [
                    -97416.43868815516,
                    2367952.196586174,
                    3.583673589285732
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:49:20+00:00",
            "end_time": "2018-09-08T05:06:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2198.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70480903246386,
              71.30031255494235,
              1.387660864044754
            ],
            [
              -156.70533468051377,
              71.30466078726292,
              1.387660864044754
            ],
            [
              -156.69182984033483,
              71.30484587725374,
              40.00766086404475
            ],
            [
              -156.69130681051965,
              71.3004976035473,
              40.00766086404475
            ],
            [
              -156.70480903246386,
              71.30031255494235,
              1.387660864044754
            ]
          ]
        ]
      },
      "bbox": [
        -156.7053347,
        71.30031255,
        1.387660864,
        -156.6913068,
        71.30484588,
        40.00766086
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:26Z",
        "pc:count": 3040025,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98983.6008,
            "count": 3040025,
            "maximum": -98735.40201,
            "minimum": -99231.30201,
            "name": "X",
            "position": 0,
            "stddev": 134.8563643,
            "variance": 18186.239
          },
          {
            "average": 2369194.123,
            "count": 3040025,
            "maximum": 2369430.632,
            "minimum": 2368956.972,
            "name": "Y",
            "position": 1,
            "stddev": 126.1728372,
            "variance": 15919.58484
          },
          {
            "average": 5.548467473,
            "count": 3040025,
            "maximum": 40.00766086,
            "minimum": 1.387660864,
            "name": "Z",
            "position": 2,
            "stddev": 0.8743347216,
            "variance": 0.7644612054
          },
          {
            "average": 36332.67389,
            "count": 3040025,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12090.78419,
            "variance": 146187062.3
          },
          {
            "average": 1.002692083,
            "count": 3040025,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05216340308,
            "variance": 0.002721020621
          },
          {
            "average": 1.005390087,
            "count": 3040025,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0739566613,
            "variance": 0.00546958775
          },
          {
            "average": 0.5008902887,
            "count": 3040025,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992896,
            "variance": 0.2499992896
          },
          {
            "average": 0.0004197333904,
            "count": 3040025,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02048309919,
            "variance": 0.0004195573522
          },
          {
            "average": 1.357694756,
            "count": 3040025,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7855015487,
            "variance": 0.6170126831
          },
          {
            "average": 0.8293499087,
            "count": 3040025,
            "maximum": 16.36800003,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.40586662,
            "variance": 108.2820601
          },
          {
            "average": 0.5039701976,
            "count": 3040025,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999843195,
            "variance": 0.2499843198
          },
          {
            "average": 408.8986311,
            "count": 3040025,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.936796524,
            "variance": 0.8775877274
          },
          {
            "average": 220416679.3,
            "count": 3040025,
            "maximum": 220417906.7,
            "minimum": 220415633,
            "name": "GpsTime",
            "position": 12,
            "stddev": 529.5700611,
            "variance": 280444.4497
          },
          {
            "average": 0.5039701976,
            "count": 3040025,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999843195,
            "variance": 0.2499843198
          },
          {
            "average": 0,
            "count": 3040025,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3040025,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3040025,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2386450769,
            "count": 3040025,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4262553976,
            "variance": 0.181693664
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99231.30201,
          2368956.972,
          1.387660864,
          -98735.40201,
          2369430.632,
          40.00766086
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99231.30200681905,
                2368956.9715407537,
                1.387660864044754
              ],
              [
                -99231.30200681905,
                2369430.631540754,
                1.387660864044754
              ],
              [
                -98735.40200681906,
                2369430.631540754,
                40.00766086404475
              ],
              [
                -98735.40200681906,
                2368956.9715407537,
                40.00766086404475
              ],
              [
                -99231.30200681905,
                2368956.9715407537,
                1.387660864044754
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:26+00:00",
        "end_time": "2018-09-08T04:20:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2198.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2198.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2198.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2198.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7053347,
            71.30031255,
            1.387660864,
            -156.6913068,
            71.30484588,
            40.00766086
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70480903246386,
                  71.30031255494235,
                  1.387660864044754
                ],
                [
                  -156.70533468051377,
                  71.30466078726292,
                  1.387660864044754
                ],
                [
                  -156.69182984033483,
                  71.30484587725374,
                  40.00766086404475
                ],
                [
                  -156.69130681051965,
                  71.3004976035473,
                  40.00766086404475
                ],
                [
                  -156.70480903246386,
                  71.30031255494235,
                  1.387660864044754
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2198.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2198.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:26Z",
            "pc:count": 3040025,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98983.6008,
                "count": 3040025,
                "maximum": -98735.40201,
                "minimum": -99231.30201,
                "name": "X",
                "position": 0,
                "stddev": 134.8563643,
                "variance": 18186.239
              },
              {
                "average": 2369194.123,
                "count": 3040025,
                "maximum": 2369430.632,
                "minimum": 2368956.972,
                "name": "Y",
                "position": 1,
                "stddev": 126.1728372,
                "variance": 15919.58484
              },
              {
                "average": 5.548467473,
                "count": 3040025,
                "maximum": 40.00766086,
                "minimum": 1.387660864,
                "name": "Z",
                "position": 2,
                "stddev": 0.8743347216,
                "variance": 0.7644612054
              },
              {
                "average": 36332.67389,
                "count": 3040025,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12090.78419,
                "variance": 146187062.3
              },
              {
                "average": 1.002692083,
                "count": 3040025,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05216340308,
                "variance": 0.002721020621
              },
              {
                "average": 1.005390087,
                "count": 3040025,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0739566613,
                "variance": 0.00546958775
              },
              {
                "average": 0.5008902887,
                "count": 3040025,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992896,
                "variance": 0.2499992896
              },
              {
                "average": 0.0004197333904,
                "count": 3040025,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02048309919,
                "variance": 0.0004195573522
              },
              {
                "average": 1.357694756,
                "count": 3040025,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7855015487,
                "variance": 0.6170126831
              },
              {
                "average": 0.8293499087,
                "count": 3040025,
                "maximum": 16.36800003,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.40586662,
                "variance": 108.2820601
              },
              {
                "average": 0.5039701976,
                "count": 3040025,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999843195,
                "variance": 0.2499843198
              },
              {
                "average": 408.8986311,
                "count": 3040025,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.936796524,
                "variance": 0.8775877274
              },
              {
                "average": 220416679.3,
                "count": 3040025,
                "maximum": 220417906.7,
                "minimum": 220415633,
                "name": "GpsTime",
                "position": 12,
                "stddev": 529.5700611,
                "variance": 280444.4497
              },
              {
                "average": 0.5039701976,
                "count": 3040025,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999843195,
                "variance": 0.2499843198
              },
              {
                "average": 0,
                "count": 3040025,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3040025,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3040025,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2386450769,
                "count": 3040025,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4262553976,
                "variance": 0.181693664
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99231.30201,
              2368956.972,
              1.387660864,
              -98735.40201,
              2369430.632,
              40.00766086
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99231.30200681905,
                    2368956.9715407537,
                    1.387660864044754
                  ],
                  [
                    -99231.30200681905,
                    2369430.631540754,
                    1.387660864044754
                  ],
                  [
                    -98735.40200681906,
                    2369430.631540754,
                    40.00766086404475
                  ],
                  [
                    -98735.40200681906,
                    2368956.9715407537,
                    40.00766086404475
                  ],
                  [
                    -99231.30200681905,
                    2368956.9715407537,
                    1.387660864044754
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:26+00:00",
            "end_time": "2018-09-08T04:20:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1986.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.668467302152,
              71.27136714886477,
              5.939412291374055
            ],
            [
              -156.66898526546214,
              71.2757149957704,
              5.939412291374055
            ],
            [
              -156.6554981123783,
              71.27589755155631,
              26.159412291374053
            ],
            [
              -156.6549827608915,
              71.27154966390322,
              26.159412291374053
            ],
            [
              -156.668467302152,
              71.27136714886477,
              5.939412291374055
            ]
          ]
        ]
      },
      "bbox": [
        -156.6689853,
        71.27136715,
        5.939412291,
        -156.6549828,
        71.27589755,
        26.15941229
      ],
      "properties": {
        "datetime": "2018-09-11T18:10:43Z",
        "pc:count": 3984468,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97778.29016,
            "count": 3984468,
            "maximum": -97529.44461,
            "minimum": -98025.32461,
            "name": "X",
            "position": 0,
            "stddev": 136.080666,
            "variance": 18517.94765
          },
          {
            "average": 2365998.532,
            "count": 3984468,
            "maximum": 2366228.469,
            "minimum": 2365754.769,
            "name": "Y",
            "position": 1,
            "stddev": 131.5997753,
            "variance": 17318.50086
          },
          {
            "average": 6.079026549,
            "count": 3984468,
            "maximum": 26.15941229,
            "minimum": 5.939412291,
            "name": "Z",
            "position": 2,
            "stddev": 0.08796669175,
            "variance": 0.007738138858
          },
          {
            "average": 27653.53814,
            "count": 3984468,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9564.195041,
            "variance": 91473826.79
          },
          {
            "average": 1.000001506,
            "count": 3984468,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001227128891,
            "variance": 1.505845315e-06
          },
          {
            "average": 1.000003012,
            "count": 3984468,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001735421014,
            "variance": 3.011686095e-06
          },
          {
            "average": 0.4977151278,
            "count": 3984468,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999948421,
            "variance": 0.2499948421
          },
          {
            "average": 0.0004981844502,
            "count": 3984468,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02231448829,
            "variance": 0.0004979363874
          },
          {
            "average": 1.263923314,
            "count": 3984468,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4418075865,
            "variance": 0.1951939435
          },
          {
            "average": 1.152766434,
            "count": 3984468,
            "maximum": 20.47800064,
            "minimum": -19.69799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62400776,
            "variance": 112.8695409
          },
          {
            "average": 0.4926707907,
            "count": 3984468,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999463425,
            "variance": 0.2499463454
          },
          {
            "average": 427.1274946,
            "count": 3984468,
            "maximum": 461,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.48308569,
            "variance": 305.6582853
          },
          {
            "average": 220489022.4,
            "count": 3984468,
            "maximum": 220724643,
            "minimum": 220420535.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 125903.8078,
            "variance": 15851768820.0
          },
          {
            "average": 0.4926707907,
            "count": 3984468,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999463425,
            "variance": 0.2499463454
          },
          {
            "average": 0,
            "count": 3984468,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3984468,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3984468,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2109621661,
            "count": 3984468,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4079916327,
            "variance": 0.1664571723
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98025.32461,
          2365754.769,
          5.939412291,
          -97529.44461,
          2366228.469,
          26.15941229
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98025.32461321334,
                2365754.7687677187,
                5.939412291374055
              ],
              [
                -98025.32461321334,
                2366228.468767719,
                5.939412291374055
              ],
              [
                -97529.44461321333,
                2366228.468767719,
                26.159412291374053
              ],
              [
                -97529.44461321333,
                2365754.7687677187,
                26.159412291374053
              ],
              [
                -98025.32461321334,
                2365754.7687677187,
                5.939412291374055
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:10:43+00:00",
        "end_time": "2018-09-08T05:42:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1986.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1986.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1986.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1986.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6689853,
            71.27136715,
            5.939412291,
            -156.6549828,
            71.27589755,
            26.15941229
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.668467302152,
                  71.27136714886477,
                  5.939412291374055
                ],
                [
                  -156.66898526546214,
                  71.2757149957704,
                  5.939412291374055
                ],
                [
                  -156.6554981123783,
                  71.27589755155631,
                  26.159412291374053
                ],
                [
                  -156.6549827608915,
                  71.27154966390322,
                  26.159412291374053
                ],
                [
                  -156.668467302152,
                  71.27136714886477,
                  5.939412291374055
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1986.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1986.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:10:43Z",
            "pc:count": 3984468,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97778.29016,
                "count": 3984468,
                "maximum": -97529.44461,
                "minimum": -98025.32461,
                "name": "X",
                "position": 0,
                "stddev": 136.080666,
                "variance": 18517.94765
              },
              {
                "average": 2365998.532,
                "count": 3984468,
                "maximum": 2366228.469,
                "minimum": 2365754.769,
                "name": "Y",
                "position": 1,
                "stddev": 131.5997753,
                "variance": 17318.50086
              },
              {
                "average": 6.079026549,
                "count": 3984468,
                "maximum": 26.15941229,
                "minimum": 5.939412291,
                "name": "Z",
                "position": 2,
                "stddev": 0.08796669175,
                "variance": 0.007738138858
              },
              {
                "average": 27653.53814,
                "count": 3984468,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9564.195041,
                "variance": 91473826.79
              },
              {
                "average": 1.000001506,
                "count": 3984468,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001227128891,
                "variance": 1.505845315e-06
              },
              {
                "average": 1.000003012,
                "count": 3984468,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001735421014,
                "variance": 3.011686095e-06
              },
              {
                "average": 0.4977151278,
                "count": 3984468,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999948421,
                "variance": 0.2499948421
              },
              {
                "average": 0.0004981844502,
                "count": 3984468,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02231448829,
                "variance": 0.0004979363874
              },
              {
                "average": 1.263923314,
                "count": 3984468,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4418075865,
                "variance": 0.1951939435
              },
              {
                "average": 1.152766434,
                "count": 3984468,
                "maximum": 20.47800064,
                "minimum": -19.69799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62400776,
                "variance": 112.8695409
              },
              {
                "average": 0.4926707907,
                "count": 3984468,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999463425,
                "variance": 0.2499463454
              },
              {
                "average": 427.1274946,
                "count": 3984468,
                "maximum": 461,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.48308569,
                "variance": 305.6582853
              },
              {
                "average": 220489022.4,
                "count": 3984468,
                "maximum": 220724643,
                "minimum": 220420535.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 125903.8078,
                "variance": 15851768820.0
              },
              {
                "average": 0.4926707907,
                "count": 3984468,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999463425,
                "variance": 0.2499463454
              },
              {
                "average": 0,
                "count": 3984468,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3984468,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3984468,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2109621661,
                "count": 3984468,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4079916327,
                "variance": 0.1664571723
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98025.32461,
              2365754.769,
              5.939412291,
              -97529.44461,
              2366228.469,
              26.15941229
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98025.32461321334,
                    2365754.7687677187,
                    5.939412291374055
                  ],
                  [
                    -98025.32461321334,
                    2366228.468767719,
                    5.939412291374055
                  ],
                  [
                    -97529.44461321333,
                    2366228.468767719,
                    26.159412291374053
                  ],
                  [
                    -97529.44461321333,
                    2365754.7687677187,
                    26.159412291374053
                  ],
                  [
                    -98025.32461321334,
                    2365754.7687677187,
                    5.939412291374055
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:10:43+00:00",
            "end_time": "2018-09-08T05:42:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2149.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7053535832094,
              71.29211867234899,
              -39.8338458735704
            ],
            [
              -156.70587918904957,
              71.29646702961583,
              -39.8338458735704
            ],
            [
              -156.69238147237218,
              71.29665211705753,
              419.4661541264296
            ],
            [
              -156.69185848264664,
              71.29230371842375,
              419.4661541264296
            ],
            [
              -156.7053535832094,
              71.29211867234899,
              -39.8338458735704
            ]
          ]
        ]
      },
      "bbox": [
        -156.7058792,
        71.29211867,
        -39.83384587,
        -156.6918585,
        71.29665212,
        419.4661541
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:22Z",
        "pc:count": 2933181,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99040.12167,
            "count": 2933181,
            "maximum": -98791.77051,
            "minimum": -99287.59051,
            "name": "X",
            "position": 0,
            "stddev": 134.0731572,
            "variance": 17975.61148
          },
          {
            "average": 2368298.634,
            "count": 2933181,
            "maximum": 2368540.355,
            "minimum": 2368066.655,
            "name": "Y",
            "position": 1,
            "stddev": 128.2226043,
            "variance": 16441.03625
          },
          {
            "average": 5.354357865,
            "count": 2933181,
            "maximum": 419.4661541,
            "minimum": -39.83384587,
            "name": "Z",
            "position": 2,
            "stddev": 1.558806392,
            "variance": 2.429877368
          },
          {
            "average": 37578.51152,
            "count": 2933181,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12162.44197,
            "variance": 147924994.7
          },
          {
            "average": 1.000197056,
            "count": 2933181,
            "maximum": 15,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04428287217,
            "variance": 0.001960972767
          },
          {
            "average": 1.000377747,
            "count": 2933181,
            "maximum": 15,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07265983394,
            "variance": 0.005279451468
          },
          {
            "average": 0.5020174343,
            "count": 2933181,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960152,
            "variance": 0.2499960152
          },
          {
            "average": 0.0004026345459,
            "count": 2933181,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02006171898,
            "variance": 0.0004024725685
          },
          {
            "average": 1.289078308,
            "count": 2933181,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4607047054,
            "variance": 0.2122488256
          },
          {
            "average": 1.388653853,
            "count": 2933181,
            "maximum": 16.51199913,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.58911342,
            "variance": 112.129323
          },
          {
            "average": 0.5323701469,
            "count": 2933181,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989511584,
            "variance": 0.2489522585
          },
          {
            "average": 410.7148597,
            "count": 2933181,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9816405963,
            "variance": 0.9636182604
          },
          {
            "average": 220417697.9,
            "count": 2933181,
            "maximum": 220418382.7,
            "minimum": 220416791.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 539.914487,
            "variance": 291507.6532
          },
          {
            "average": 0.5323701469,
            "count": 2933181,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989511584,
            "variance": 0.2489522585
          },
          {
            "average": 0,
            "count": 2933181,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2933181,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2933181,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2636564194,
            "count": 2933181,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4406152268,
            "variance": 0.1941417781
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99287.59051,
          2368066.655,
          -39.83384587,
          -98791.77051,
          2368540.355,
          419.4661541
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99287.59050938088,
                2368066.6548133255,
                -39.8338458735704
              ],
              [
                -99287.59050938088,
                2368540.3548133257,
                -39.8338458735704
              ],
              [
                -98791.77050938088,
                2368540.3548133257,
                419.4661541264296
              ],
              [
                -98791.77050938088,
                2368066.6548133255,
                419.4661541264296
              ],
              [
                -99287.59050938088,
                2368066.6548133255,
                -39.8338458735704
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:22+00:00",
        "end_time": "2018-09-08T04:39:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2149.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2149.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2149.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2149.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7058792,
            71.29211867,
            -39.83384587,
            -156.6918585,
            71.29665212,
            419.4661541
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7053535832094,
                  71.29211867234899,
                  -39.8338458735704
                ],
                [
                  -156.70587918904957,
                  71.29646702961583,
                  -39.8338458735704
                ],
                [
                  -156.69238147237218,
                  71.29665211705753,
                  419.4661541264296
                ],
                [
                  -156.69185848264664,
                  71.29230371842375,
                  419.4661541264296
                ],
                [
                  -156.7053535832094,
                  71.29211867234899,
                  -39.8338458735704
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2149.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2149.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:22Z",
            "pc:count": 2933181,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99040.12167,
                "count": 2933181,
                "maximum": -98791.77051,
                "minimum": -99287.59051,
                "name": "X",
                "position": 0,
                "stddev": 134.0731572,
                "variance": 17975.61148
              },
              {
                "average": 2368298.634,
                "count": 2933181,
                "maximum": 2368540.355,
                "minimum": 2368066.655,
                "name": "Y",
                "position": 1,
                "stddev": 128.2226043,
                "variance": 16441.03625
              },
              {
                "average": 5.354357865,
                "count": 2933181,
                "maximum": 419.4661541,
                "minimum": -39.83384587,
                "name": "Z",
                "position": 2,
                "stddev": 1.558806392,
                "variance": 2.429877368
              },
              {
                "average": 37578.51152,
                "count": 2933181,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12162.44197,
                "variance": 147924994.7
              },
              {
                "average": 1.000197056,
                "count": 2933181,
                "maximum": 15,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04428287217,
                "variance": 0.001960972767
              },
              {
                "average": 1.000377747,
                "count": 2933181,
                "maximum": 15,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07265983394,
                "variance": 0.005279451468
              },
              {
                "average": 0.5020174343,
                "count": 2933181,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960152,
                "variance": 0.2499960152
              },
              {
                "average": 0.0004026345459,
                "count": 2933181,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02006171898,
                "variance": 0.0004024725685
              },
              {
                "average": 1.289078308,
                "count": 2933181,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4607047054,
                "variance": 0.2122488256
              },
              {
                "average": 1.388653853,
                "count": 2933181,
                "maximum": 16.51199913,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.58911342,
                "variance": 112.129323
              },
              {
                "average": 0.5323701469,
                "count": 2933181,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989511584,
                "variance": 0.2489522585
              },
              {
                "average": 410.7148597,
                "count": 2933181,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9816405963,
                "variance": 0.9636182604
              },
              {
                "average": 220417697.9,
                "count": 2933181,
                "maximum": 220418382.7,
                "minimum": 220416791.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 539.914487,
                "variance": 291507.6532
              },
              {
                "average": 0.5323701469,
                "count": 2933181,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989511584,
                "variance": 0.2489522585
              },
              {
                "average": 0,
                "count": 2933181,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2933181,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2933181,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2636564194,
                "count": 2933181,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4406152268,
                "variance": 0.1941417781
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99287.59051,
              2368066.655,
              -39.83384587,
              -98791.77051,
              2368540.355,
              419.4661541
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99287.59050938088,
                    2368066.6548133255,
                    -39.8338458735704
                  ],
                  [
                    -99287.59050938088,
                    2368540.3548133257,
                    -39.8338458735704
                  ],
                  [
                    -98791.77050938088,
                    2368540.3548133257,
                    419.4661541264296
                  ],
                  [
                    -98791.77050938088,
                    2368066.6548133255,
                    419.4661541264296
                  ],
                  [
                    -99287.59050938088,
                    2368066.6548133255,
                    -39.8338458735704
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:22+00:00",
            "end_time": "2018-09-08T04:39:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1934.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79623427887753,
              71.26812950062721,
              10.33806929190471
            ],
            [
              -156.79677692677382,
              71.2724767249222,
              10.33806929190471
            ],
            [
              -156.78329604842247,
              71.27266798838333,
              17.79806929190471
            ],
            [
              -156.78275601002764,
              71.26832072141131,
              17.79806929190471
            ],
            [
              -156.79623427887753,
              71.26812950062721,
              10.33806929190471
            ]
          ]
        ]
      },
      "bbox": [
        -156.7967769,
        71.2681295,
        10.33806929,
        -156.782756,
        71.27266799,
        17.79806929
      ],
      "properties": {
        "datetime": "2018-09-08T05:05:08Z",
        "pc:count": 3050346,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102480.6694,
            "count": 3050346,
            "maximum": -102235.1709,
            "minimum": -102730.9309,
            "name": "X",
            "position": 0,
            "stddev": 135.1735867,
            "variance": 18271.89854
          },
          {
            "average": 2365828.902,
            "count": 3050346,
            "maximum": 2366069.395,
            "minimum": 2365595.715,
            "name": "Y",
            "position": 1,
            "stddev": 128.2539881,
            "variance": 16449.08547
          },
          {
            "average": 14.70617064,
            "count": 3050346,
            "maximum": 17.79806929,
            "minimum": 10.33806929,
            "name": "Z",
            "position": 2,
            "stddev": 1.199255244,
            "variance": 1.43821314
          },
          {
            "average": 44979.1147,
            "count": 3050346,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 7449.993656,
            "variance": 55502405.48
          },
          {
            "average": 1.000000656,
            "count": 3050346,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008097302698,
            "variance": 6.556631098e-07
          },
          {
            "average": 1.000001311,
            "count": 3050346,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001145131154,
            "variance": 1.31132536e-06
          },
          {
            "average": 0.5023846475,
            "count": 3050346,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999943954,
            "variance": 0.2499943954
          },
          {
            "average": 0.0004130678946,
            "count": 3050346,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02031987709,
            "variance": 0.0004128974049
          },
          {
            "average": 1.308452877,
            "count": 3050346,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4620058722,
            "variance": 0.213449426
          },
          {
            "average": 0.05377489253,
            "count": 3050346,
            "maximum": 16.38599968,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51655378,
            "variance": 110.5979034
          },
          {
            "average": 0.5061852,
            "count": 3050346,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999618238,
            "variance": 0.2499618252
          },
          {
            "average": 410.1281235,
            "count": 3050346,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9248033165,
            "variance": 0.8552611742
          },
          {
            "average": 220417410.2,
            "count": 3050346,
            "maximum": 220418308.1,
            "minimum": 220416053.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.1133083,
            "variance": 275743.9865
          },
          {
            "average": 0.5061852,
            "count": 3050346,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999618238,
            "variance": 0.2499618252
          },
          {
            "average": 0,
            "count": 3050346,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3050346,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3050346,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2399229464,
            "count": 3050346,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4270362818,
            "variance": 0.182359986
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102730.9309,
          2365595.715,
          10.33806929,
          -102235.1709,
          2366069.395,
          17.79806929
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102730.9309220734,
                2365595.7149896147,
                10.33806929190471
              ],
              [
                -102730.9309220734,
                2366069.3949896144,
                10.33806929190471
              ],
              [
                -102235.17092207339,
                2366069.3949896144,
                17.79806929190471
              ],
              [
                -102235.17092207339,
                2365595.7149896147,
                17.79806929190471
              ],
              [
                -102730.9309220734,
                2365595.7149896147,
                10.33806929190471
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:05:08+00:00",
        "end_time": "2018-09-08T04:27:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1934.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1934.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1934.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1934.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7967769,
            71.2681295,
            10.33806929,
            -156.782756,
            71.27266799,
            17.79806929
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79623427887753,
                  71.26812950062721,
                  10.33806929190471
                ],
                [
                  -156.79677692677382,
                  71.2724767249222,
                  10.33806929190471
                ],
                [
                  -156.78329604842247,
                  71.27266798838333,
                  17.79806929190471
                ],
                [
                  -156.78275601002764,
                  71.26832072141131,
                  17.79806929190471
                ],
                [
                  -156.79623427887753,
                  71.26812950062721,
                  10.33806929190471
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1934.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1934.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:05:08Z",
            "pc:count": 3050346,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102480.6694,
                "count": 3050346,
                "maximum": -102235.1709,
                "minimum": -102730.9309,
                "name": "X",
                "position": 0,
                "stddev": 135.1735867,
                "variance": 18271.89854
              },
              {
                "average": 2365828.902,
                "count": 3050346,
                "maximum": 2366069.395,
                "minimum": 2365595.715,
                "name": "Y",
                "position": 1,
                "stddev": 128.2539881,
                "variance": 16449.08547
              },
              {
                "average": 14.70617064,
                "count": 3050346,
                "maximum": 17.79806929,
                "minimum": 10.33806929,
                "name": "Z",
                "position": 2,
                "stddev": 1.199255244,
                "variance": 1.43821314
              },
              {
                "average": 44979.1147,
                "count": 3050346,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 7449.993656,
                "variance": 55502405.48
              },
              {
                "average": 1.000000656,
                "count": 3050346,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008097302698,
                "variance": 6.556631098e-07
              },
              {
                "average": 1.000001311,
                "count": 3050346,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001145131154,
                "variance": 1.31132536e-06
              },
              {
                "average": 0.5023846475,
                "count": 3050346,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999943954,
                "variance": 0.2499943954
              },
              {
                "average": 0.0004130678946,
                "count": 3050346,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02031987709,
                "variance": 0.0004128974049
              },
              {
                "average": 1.308452877,
                "count": 3050346,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4620058722,
                "variance": 0.213449426
              },
              {
                "average": 0.05377489253,
                "count": 3050346,
                "maximum": 16.38599968,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51655378,
                "variance": 110.5979034
              },
              {
                "average": 0.5061852,
                "count": 3050346,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999618238,
                "variance": 0.2499618252
              },
              {
                "average": 410.1281235,
                "count": 3050346,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9248033165,
                "variance": 0.8552611742
              },
              {
                "average": 220417410.2,
                "count": 3050346,
                "maximum": 220418308.1,
                "minimum": 220416053.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.1133083,
                "variance": 275743.9865
              },
              {
                "average": 0.5061852,
                "count": 3050346,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999618238,
                "variance": 0.2499618252
              },
              {
                "average": 0,
                "count": 3050346,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3050346,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3050346,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2399229464,
                "count": 3050346,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4270362818,
                "variance": 0.182359986
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102730.9309,
              2365595.715,
              10.33806929,
              -102235.1709,
              2366069.395,
              17.79806929
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102730.9309220734,
                    2365595.7149896147,
                    10.33806929190471
                  ],
                  [
                    -102730.9309220734,
                    2366069.3949896144,
                    10.33806929190471
                  ],
                  [
                    -102235.17092207339,
                    2366069.3949896144,
                    17.79806929190471
                  ],
                  [
                    -102235.17092207339,
                    2365595.7149896147,
                    17.79806929190471
                  ],
                  [
                    -102730.9309220734,
                    2365595.7149896147,
                    10.33806929190471
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:05:08+00:00",
            "end_time": "2018-09-08T04:27:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2045.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.80822972663682,
              71.28050142573213,
              -4.753708285668436
            ],
            [
              -156.80877502502312,
              71.28484916243829,
              -4.753708285668436
            ],
            [
              -156.7952889806126,
              71.28504123273699,
              32.806291714331564
            ],
            [
              -156.79474629421966,
              71.28069345313814,
              32.806291714331564
            ],
            [
              -156.80822972663682,
              71.28050142573213,
              -4.753708285668436
            ]
          ]
        ]
      },
      "bbox": [
        -156.808775,
        71.28050143,
        -4.753708286,
        -156.7947463,
        71.28504123,
        32.80629171
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:52Z",
        "pc:count": 3016785,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102869.2159,
            "count": 3016785,
            "maximum": -102618.7553,
            "minimum": -103114.4353,
            "name": "X",
            "position": 0,
            "stddev": 134.6397567,
            "variance": 18127.86407
          },
          {
            "average": 2367193.13,
            "count": 3016785,
            "maximum": 2367433.638,
            "minimum": 2366959.938,
            "name": "Y",
            "position": 1,
            "stddev": 131.0325623,
            "variance": 17169.53237
          },
          {
            "average": 9.634296474,
            "count": 3016785,
            "maximum": 32.80629171,
            "minimum": -4.753708286,
            "name": "Z",
            "position": 2,
            "stddev": 4.049606019,
            "variance": 16.39930891
          },
          {
            "average": 24214.32348,
            "count": 3016785,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8237.310476,
            "variance": 67853283.87
          },
          {
            "average": 1.000825051,
            "count": 3016785,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02927208565,
            "variance": 0.0008568549983
          },
          {
            "average": 1.001651095,
            "count": 3016785,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04178306664,
            "variance": 0.001745824657
          },
          {
            "average": 0.5033494266,
            "count": 3016785,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999888641,
            "variance": 0.2499888642
          },
          {
            "average": 0.0004630757578,
            "count": 3016785,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02151421558,
            "variance": 0.0004628614721
          },
          {
            "average": 1.343632708,
            "count": 3016785,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.606486074,
            "variance": 0.367825358
          },
          {
            "average": 0.8021118591,
            "count": 3016785,
            "maximum": 16.50600052,
            "minimum": -15.74400043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.64757826,
            "variance": 113.3709229
          },
          {
            "average": 0.5458731729,
            "count": 3016785,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978912875,
            "variance": 0.2478957342
          },
          {
            "average": 406.541739,
            "count": 3016785,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9720888896,
            "variance": 0.9449568094
          },
          {
            "average": 220415343.5,
            "count": 3016785,
            "maximum": 220416072,
            "minimum": 220414574.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.8839135,
            "variance": 288244.3366
          },
          {
            "average": 0.5458731729,
            "count": 3016785,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978912875,
            "variance": 0.2478957342
          },
          {
            "average": 0,
            "count": 3016785,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3016785,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3016785,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2631377443,
            "count": 3016785,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4403366168,
            "variance": 0.1938963361
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103114.4353,
          2366959.938,
          -4.753708286,
          -102618.7553,
          2367433.638,
          32.80629171
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103114.43528713362,
                2366959.9384707627,
                -4.753708285668436
              ],
              [
                -103114.43528713362,
                2367433.638470763,
                -4.753708285668436
              ],
              [
                -102618.75528713362,
                2367433.638470763,
                32.806291714331564
              ],
              [
                -102618.75528713362,
                2366959.9384707627,
                32.806291714331564
              ],
              [
                -103114.43528713362,
                2366959.9384707627,
                -4.753708285668436
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:52+00:00",
        "end_time": "2018-09-08T04:02:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2045.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2045.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2045.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2045.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.808775,
            71.28050143,
            -4.753708286,
            -156.7947463,
            71.28504123,
            32.80629171
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.80822972663682,
                  71.28050142573213,
                  -4.753708285668436
                ],
                [
                  -156.80877502502312,
                  71.28484916243829,
                  -4.753708285668436
                ],
                [
                  -156.7952889806126,
                  71.28504123273699,
                  32.806291714331564
                ],
                [
                  -156.79474629421966,
                  71.28069345313814,
                  32.806291714331564
                ],
                [
                  -156.80822972663682,
                  71.28050142573213,
                  -4.753708285668436
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2045.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2045.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:52Z",
            "pc:count": 3016785,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102869.2159,
                "count": 3016785,
                "maximum": -102618.7553,
                "minimum": -103114.4353,
                "name": "X",
                "position": 0,
                "stddev": 134.6397567,
                "variance": 18127.86407
              },
              {
                "average": 2367193.13,
                "count": 3016785,
                "maximum": 2367433.638,
                "minimum": 2366959.938,
                "name": "Y",
                "position": 1,
                "stddev": 131.0325623,
                "variance": 17169.53237
              },
              {
                "average": 9.634296474,
                "count": 3016785,
                "maximum": 32.80629171,
                "minimum": -4.753708286,
                "name": "Z",
                "position": 2,
                "stddev": 4.049606019,
                "variance": 16.39930891
              },
              {
                "average": 24214.32348,
                "count": 3016785,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8237.310476,
                "variance": 67853283.87
              },
              {
                "average": 1.000825051,
                "count": 3016785,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02927208565,
                "variance": 0.0008568549983
              },
              {
                "average": 1.001651095,
                "count": 3016785,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04178306664,
                "variance": 0.001745824657
              },
              {
                "average": 0.5033494266,
                "count": 3016785,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999888641,
                "variance": 0.2499888642
              },
              {
                "average": 0.0004630757578,
                "count": 3016785,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02151421558,
                "variance": 0.0004628614721
              },
              {
                "average": 1.343632708,
                "count": 3016785,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.606486074,
                "variance": 0.367825358
              },
              {
                "average": 0.8021118591,
                "count": 3016785,
                "maximum": 16.50600052,
                "minimum": -15.74400043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.64757826,
                "variance": 113.3709229
              },
              {
                "average": 0.5458731729,
                "count": 3016785,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978912875,
                "variance": 0.2478957342
              },
              {
                "average": 406.541739,
                "count": 3016785,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9720888896,
                "variance": 0.9449568094
              },
              {
                "average": 220415343.5,
                "count": 3016785,
                "maximum": 220416072,
                "minimum": 220414574.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.8839135,
                "variance": 288244.3366
              },
              {
                "average": 0.5458731729,
                "count": 3016785,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978912875,
                "variance": 0.2478957342
              },
              {
                "average": 0,
                "count": 3016785,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3016785,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3016785,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2631377443,
                "count": 3016785,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4403366168,
                "variance": 0.1938963361
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103114.4353,
              2366959.938,
              -4.753708286,
              -102618.7553,
              2367433.638,
              32.80629171
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103114.43528713362,
                    2366959.9384707627,
                    -4.753708285668436
                  ],
                  [
                    -103114.43528713362,
                    2367433.638470763,
                    -4.753708285668436
                  ],
                  [
                    -102618.75528713362,
                    2367433.638470763,
                    32.806291714331564
                  ],
                  [
                    -102618.75528713362,
                    2366959.9384707627,
                    32.806291714331564
                  ],
                  [
                    -103114.43528713362,
                    2366959.9384707627,
                    -4.753708285668436
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:52+00:00",
            "end_time": "2018-09-08T04:02:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2089.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66762126997205,
              71.28365794322625,
              5.725463283100233
            ],
            [
              -156.66813939702445,
              71.28800651943415,
              5.725463283100233
            ],
            [
              -156.65464755772945,
              71.28818899539525,
              15.365463283100233
            ],
            [
              -156.654132045066,
              71.28384037842198,
              15.365463283100233
            ],
            [
              -156.66762126997205,
              71.28365794322625,
              5.725463283100233
            ]
          ]
        ]
      },
      "bbox": [
        -156.6681394,
        71.28365794,
        5.725463283,
        -156.654132,
        71.288189,
        15.36546328
      ],
      "properties": {
        "datetime": "2018-09-11T17:51:08Z",
        "pc:count": 3141756,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97689.81871,
            "count": 3141756,
            "maximum": -97444.75299,
            "minimum": -97940.53299,
            "name": "X",
            "position": 0,
            "stddev": 136.3039792,
            "variance": 18578.77473
          },
          {
            "average": 2367328.845,
            "count": 3141756,
            "maximum": 2367564.152,
            "minimum": 2367090.412,
            "name": "Y",
            "position": 1,
            "stddev": 128.2947576,
            "variance": 16459.54483
          },
          {
            "average": 6.140033689,
            "count": 3141756,
            "maximum": 15.36546328,
            "minimum": 5.725463283,
            "name": "Z",
            "position": 2,
            "stddev": 0.2273661565,
            "variance": 0.05169536914
          },
          {
            "average": 32891.70589,
            "count": 3141756,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10717.68605,
            "variance": 114868794.3
          },
          {
            "average": 1.000346621,
            "count": 3141756,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01871686215,
            "variance": 0.0003503209287
          },
          {
            "average": 1.000692288,
            "count": 3141756,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02653119136,
            "variance": 0.0007039041152
          },
          {
            "average": 0.5015551812,
            "count": 3141756,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997661,
            "variance": 0.249997661
          },
          {
            "average": 0.000391500804,
            "count": 3141756,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01978250883,
            "variance": 0.0003913476557
          },
          {
            "average": 1.292584784,
            "count": 3141756,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4589671307,
            "variance": 0.2106508271
          },
          {
            "average": -0.3040097492,
            "count": 3141756,
            "maximum": 17.68199921,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.26047231,
            "variance": 105.2772919
          },
          {
            "average": 0.4883724261,
            "count": 3141756,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998648608,
            "variance": 0.2498648791
          },
          {
            "average": 417.5511825,
            "count": 3141756,
            "maximum": 458,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 10.22599511,
            "variance": 104.570976
          },
          {
            "average": 220438124,
            "count": 3141756,
            "maximum": 220723468.5,
            "minimum": 220419005.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 71858.5106,
            "variance": 5163645546
          },
          {
            "average": 0.4883724261,
            "count": 3141756,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998648608,
            "variance": 0.2498648791
          },
          {
            "average": 0,
            "count": 3141756,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3141756,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3141756,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2133552065,
            "count": 3141756,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4096764769,
            "variance": 0.1678348158
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97940.53299,
          2367090.412,
          5.725463283,
          -97444.75299,
          2367564.152,
          15.36546328
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97940.53298552419,
                2367090.4120318233,
                5.725463283100233
              ],
              [
                -97940.53298552419,
                2367564.1520318235,
                5.725463283100233
              ],
              [
                -97444.75298552419,
                2367564.1520318235,
                15.365463283100233
              ],
              [
                -97444.75298552419,
                2367090.4120318233,
                15.365463283100233
              ],
              [
                -97940.53298552419,
                2367090.4120318233,
                5.725463283100233
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:51:08+00:00",
        "end_time": "2018-09-08T05:16:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2089.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2089.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2089.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2089.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6681394,
            71.28365794,
            5.725463283,
            -156.654132,
            71.288189,
            15.36546328
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66762126997205,
                  71.28365794322625,
                  5.725463283100233
                ],
                [
                  -156.66813939702445,
                  71.28800651943415,
                  5.725463283100233
                ],
                [
                  -156.65464755772945,
                  71.28818899539525,
                  15.365463283100233
                ],
                [
                  -156.654132045066,
                  71.28384037842198,
                  15.365463283100233
                ],
                [
                  -156.66762126997205,
                  71.28365794322625,
                  5.725463283100233
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2089.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2089.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:51:08Z",
            "pc:count": 3141756,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97689.81871,
                "count": 3141756,
                "maximum": -97444.75299,
                "minimum": -97940.53299,
                "name": "X",
                "position": 0,
                "stddev": 136.3039792,
                "variance": 18578.77473
              },
              {
                "average": 2367328.845,
                "count": 3141756,
                "maximum": 2367564.152,
                "minimum": 2367090.412,
                "name": "Y",
                "position": 1,
                "stddev": 128.2947576,
                "variance": 16459.54483
              },
              {
                "average": 6.140033689,
                "count": 3141756,
                "maximum": 15.36546328,
                "minimum": 5.725463283,
                "name": "Z",
                "position": 2,
                "stddev": 0.2273661565,
                "variance": 0.05169536914
              },
              {
                "average": 32891.70589,
                "count": 3141756,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10717.68605,
                "variance": 114868794.3
              },
              {
                "average": 1.000346621,
                "count": 3141756,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01871686215,
                "variance": 0.0003503209287
              },
              {
                "average": 1.000692288,
                "count": 3141756,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02653119136,
                "variance": 0.0007039041152
              },
              {
                "average": 0.5015551812,
                "count": 3141756,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997661,
                "variance": 0.249997661
              },
              {
                "average": 0.000391500804,
                "count": 3141756,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01978250883,
                "variance": 0.0003913476557
              },
              {
                "average": 1.292584784,
                "count": 3141756,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4589671307,
                "variance": 0.2106508271
              },
              {
                "average": -0.3040097492,
                "count": 3141756,
                "maximum": 17.68199921,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.26047231,
                "variance": 105.2772919
              },
              {
                "average": 0.4883724261,
                "count": 3141756,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998648608,
                "variance": 0.2498648791
              },
              {
                "average": 417.5511825,
                "count": 3141756,
                "maximum": 458,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 10.22599511,
                "variance": 104.570976
              },
              {
                "average": 220438124,
                "count": 3141756,
                "maximum": 220723468.5,
                "minimum": 220419005.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 71858.5106,
                "variance": 5163645546
              },
              {
                "average": 0.4883724261,
                "count": 3141756,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998648608,
                "variance": 0.2498648791
              },
              {
                "average": 0,
                "count": 3141756,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3141756,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3141756,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2133552065,
                "count": 3141756,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4096764769,
                "variance": 0.1678348158
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97940.53299,
              2367090.412,
              5.725463283,
              -97444.75299,
              2367564.152,
              15.36546328
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97940.53298552419,
                    2367090.4120318233,
                    5.725463283100233
                  ],
                  [
                    -97940.53298552419,
                    2367564.1520318235,
                    5.725463283100233
                  ],
                  [
                    -97444.75298552419,
                    2367564.1520318235,
                    15.365463283100233
                  ],
                  [
                    -97444.75298552419,
                    2367090.4120318233,
                    15.365463283100233
                  ],
                  [
                    -97940.53298552419,
                    2367090.4120318233,
                    5.725463283100233
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:51:08+00:00",
            "end_time": "2018-09-08T05:16:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2225.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61512921888522,
              71.30377404185622,
              0.927531927414897
            ],
            [
              -156.61563748354058,
              71.30812224414512,
              0.927531927414897
            ],
            [
              -156.60212764832434,
              71.3083012181019,
              4.327531927414896
            ],
            [
              -156.6016220034807,
              71.30395297578694,
              4.327531927414896
            ],
            [
              -156.61512921888522,
              71.30377404185622,
              0.927531927414897
            ]
          ]
        ]
      },
      "bbox": [
        -156.6156375,
        71.30377404,
        0.9275319274,
        -156.601622,
        71.30830122,
        4.327531927
      ],
      "properties": {
        "datetime": "2018-09-11T17:40:59Z",
        "pc:count": 3284267,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95666.60023,
            "count": 3284267,
            "maximum": -95432.13755,
            "minimum": -95928.11755,
            "name": "X",
            "position": 0,
            "stddev": 135.7333838,
            "variance": 18423.55147
          },
          {
            "average": 2369431.718,
            "count": 3284267,
            "maximum": 2369675.274,
            "minimum": 2369201.654,
            "name": "Y",
            "position": 1,
            "stddev": 127.2168345,
            "variance": 16184.12298
          },
          {
            "average": 2.687573556,
            "count": 3284267,
            "maximum": 4.327531927,
            "minimum": 0.9275319274,
            "name": "Z",
            "position": 2,
            "stddev": 0.3455755972,
            "variance": 0.1194224934
          },
          {
            "average": 38537.61948,
            "count": 3284267,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11283.99972,
            "variance": 127328649.7
          },
          {
            "average": 1,
            "count": 3284267,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3284267,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5052107517,
            "count": 3284267,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999729234,
            "variance": 0.2499729242
          },
          {
            "average": 0.0004296240227,
            "count": 3284267,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02072292394,
            "variance": 0.0004294395766
          },
          {
            "average": 1.295229651,
            "count": 3284267,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4883998589,
            "variance": 0.2385344221
          },
          {
            "average": -2.055006461,
            "count": 3284267,
            "maximum": 16.53000069,
            "minimum": -19.43400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63502303,
            "variance": 113.1037148
          },
          {
            "average": 0.4904543388,
            "count": 3284267,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999089482,
            "variance": 0.2499089564
          },
          {
            "average": 420.8486405,
            "count": 3284267,
            "maximum": 455,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.18421016,
            "variance": 230.5602383
          },
          {
            "average": 220470684.5,
            "count": 3284267,
            "maximum": 220722859.7,
            "minimum": 220418428.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 113564.3068,
            "variance": 12896851780.0
          },
          {
            "average": 0.4904543388,
            "count": 3284267,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999089482,
            "variance": 0.2499089564
          },
          {
            "average": 0,
            "count": 3284267,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3284267,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3284267,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2024025452,
            "count": 3284267,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4017907466,
            "variance": 0.1614358041
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95928.11755,
          2369201.654,
          0.9275319274,
          -95432.13755,
          2369675.274,
          4.327531927
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95928.11754996372,
                2369201.6540231775,
                0.927531927414897
              ],
              [
                -95928.11754996372,
                2369675.2740231776,
                0.927531927414897
              ],
              [
                -95432.1375499637,
                2369675.2740231776,
                4.327531927414896
              ],
              [
                -95432.1375499637,
                2369201.6540231775,
                4.327531927414896
              ],
              [
                -95928.11754996372,
                2369201.6540231775,
                0.927531927414897
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:40:59+00:00",
        "end_time": "2018-09-08T05:07:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2225.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2225.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2225.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2225.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6156375,
            71.30377404,
            0.9275319274,
            -156.601622,
            71.30830122,
            4.327531927
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61512921888522,
                  71.30377404185622,
                  0.927531927414897
                ],
                [
                  -156.61563748354058,
                  71.30812224414512,
                  0.927531927414897
                ],
                [
                  -156.60212764832434,
                  71.3083012181019,
                  4.327531927414896
                ],
                [
                  -156.6016220034807,
                  71.30395297578694,
                  4.327531927414896
                ],
                [
                  -156.61512921888522,
                  71.30377404185622,
                  0.927531927414897
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2225.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2225.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:40:59Z",
            "pc:count": 3284267,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95666.60023,
                "count": 3284267,
                "maximum": -95432.13755,
                "minimum": -95928.11755,
                "name": "X",
                "position": 0,
                "stddev": 135.7333838,
                "variance": 18423.55147
              },
              {
                "average": 2369431.718,
                "count": 3284267,
                "maximum": 2369675.274,
                "minimum": 2369201.654,
                "name": "Y",
                "position": 1,
                "stddev": 127.2168345,
                "variance": 16184.12298
              },
              {
                "average": 2.687573556,
                "count": 3284267,
                "maximum": 4.327531927,
                "minimum": 0.9275319274,
                "name": "Z",
                "position": 2,
                "stddev": 0.3455755972,
                "variance": 0.1194224934
              },
              {
                "average": 38537.61948,
                "count": 3284267,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11283.99972,
                "variance": 127328649.7
              },
              {
                "average": 1,
                "count": 3284267,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3284267,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5052107517,
                "count": 3284267,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999729234,
                "variance": 0.2499729242
              },
              {
                "average": 0.0004296240227,
                "count": 3284267,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02072292394,
                "variance": 0.0004294395766
              },
              {
                "average": 1.295229651,
                "count": 3284267,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4883998589,
                "variance": 0.2385344221
              },
              {
                "average": -2.055006461,
                "count": 3284267,
                "maximum": 16.53000069,
                "minimum": -19.43400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63502303,
                "variance": 113.1037148
              },
              {
                "average": 0.4904543388,
                "count": 3284267,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999089482,
                "variance": 0.2499089564
              },
              {
                "average": 420.8486405,
                "count": 3284267,
                "maximum": 455,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.18421016,
                "variance": 230.5602383
              },
              {
                "average": 220470684.5,
                "count": 3284267,
                "maximum": 220722859.7,
                "minimum": 220418428.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 113564.3068,
                "variance": 12896851780.0
              },
              {
                "average": 0.4904543388,
                "count": 3284267,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999089482,
                "variance": 0.2499089564
              },
              {
                "average": 0,
                "count": 3284267,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3284267,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3284267,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2024025452,
                "count": 3284267,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4017907466,
                "variance": 0.1614358041
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95928.11755,
              2369201.654,
              0.9275319274,
              -95432.13755,
              2369675.274,
              4.327531927
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95928.11754996372,
                    2369201.6540231775,
                    0.927531927414897
                  ],
                  [
                    -95928.11754996372,
                    2369675.2740231776,
                    0.927531927414897
                  ],
                  [
                    -95432.1375499637,
                    2369675.2740231776,
                    4.327531927414896
                  ],
                  [
                    -95432.1375499637,
                    2369201.6540231775,
                    4.327531927414896
                  ],
                  [
                    -95928.11754996372,
                    2369201.6540231775,
                    0.927531927414897
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:40:59+00:00",
            "end_time": "2018-09-08T05:07:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2214.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75562434399404,
              71.30475570440453,
              -13.24988966332487
            ],
            [
              -156.75615965140184,
              71.30910136011285,
              -13.24988966332487
            ],
            [
              -156.7426574579809,
              71.30928987141786,
              22.230110336675132
            ],
            [
              -156.74212476701965,
              71.30494417357279,
              22.230110336675132
            ],
            [
              -156.75562434399404,
              71.30475570440453,
              -13.24988966332487
            ]
          ]
        ]
      },
      "bbox": [
        -156.7561597,
        71.3047557,
        -13.24988966,
        -156.7421248,
        71.30928987,
        22.23011034
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:02Z",
        "pc:count": 2382973,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100808.0058,
            "count": 2382973,
            "maximum": -100578.7223,
            "minimum": -101074.4423,
            "name": "X",
            "position": 0,
            "stddev": 132.2404024,
            "variance": 17487.52403
          },
          {
            "average": 2369733.211,
            "count": 2382973,
            "maximum": 2369990.174,
            "minimum": 2369516.794,
            "name": "Y",
            "position": 1,
            "stddev": 128.8910614,
            "variance": 16612.90571
          },
          {
            "average": 2.732454942,
            "count": 2382973,
            "maximum": 22.23011034,
            "minimum": -13.24988966,
            "name": "Z",
            "position": 2,
            "stddev": 1.545185273,
            "variance": 2.387597529
          },
          {
            "average": 23327.74698,
            "count": 2382973,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12080.62975,
            "variance": 145941615.1
          },
          {
            "average": 1.006259828,
            "count": 2382973,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08024773451,
            "variance": 0.006439698894
          },
          {
            "average": 1.012508744,
            "count": 2382973,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1140552678,
            "variance": 0.01300860411
          },
          {
            "average": 0.503394709,
            "count": 2382973,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999885807,
            "variance": 0.2499885809
          },
          {
            "average": 0.0005060905012,
            "count": 2382973,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02249076668,
            "variance": 0.0005058345859
          },
          {
            "average": 3.495106323,
            "count": 2382973,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.405963334,
            "variance": 11.60058624
          },
          {
            "average": 0.2789522501,
            "count": 2382973,
            "maximum": 16.44000053,
            "minimum": -15.72599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.02418679,
            "variance": 100.4843207
          },
          {
            "average": 0.5239324994,
            "count": 2382973,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994270118,
            "variance": 0.2494273401
          },
          {
            "average": 404.8012193,
            "count": 2382973,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8821312282,
            "variance": 0.7781555038
          },
          {
            "average": 220414350,
            "count": 2382973,
            "maximum": 220415002.3,
            "minimum": 220413411.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 498.3341685,
            "variance": 248336.9435
          },
          {
            "average": 0.5239324994,
            "count": 2382973,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994270118,
            "variance": 0.2494273401
          },
          {
            "average": 0,
            "count": 2382973,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2382973,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2382973,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.221033138,
            "count": 2382973,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4149428421,
            "variance": 0.1721775622
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101074.4423,
          2369516.794,
          -13.24988966,
          -100578.7223,
          2369990.174,
          22.23011034
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101074.44229067759,
                2369516.794161824,
                -13.24988966332487
              ],
              [
                -101074.44229067759,
                2369990.174161824,
                -13.24988966332487
              ],
              [
                -100578.72229067759,
                2369990.174161824,
                22.230110336675132
              ],
              [
                -100578.72229067759,
                2369516.794161824,
                22.230110336675132
              ],
              [
                -101074.44229067759,
                2369516.794161824,
                -13.24988966332487
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:02+00:00",
        "end_time": "2018-09-08T03:43:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2214.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2214.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2214.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2214.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7561597,
            71.3047557,
            -13.24988966,
            -156.7421248,
            71.30928987,
            22.23011034
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75562434399404,
                  71.30475570440453,
                  -13.24988966332487
                ],
                [
                  -156.75615965140184,
                  71.30910136011285,
                  -13.24988966332487
                ],
                [
                  -156.7426574579809,
                  71.30928987141786,
                  22.230110336675132
                ],
                [
                  -156.74212476701965,
                  71.30494417357279,
                  22.230110336675132
                ],
                [
                  -156.75562434399404,
                  71.30475570440453,
                  -13.24988966332487
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2214.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2214.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:02Z",
            "pc:count": 2382973,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100808.0058,
                "count": 2382973,
                "maximum": -100578.7223,
                "minimum": -101074.4423,
                "name": "X",
                "position": 0,
                "stddev": 132.2404024,
                "variance": 17487.52403
              },
              {
                "average": 2369733.211,
                "count": 2382973,
                "maximum": 2369990.174,
                "minimum": 2369516.794,
                "name": "Y",
                "position": 1,
                "stddev": 128.8910614,
                "variance": 16612.90571
              },
              {
                "average": 2.732454942,
                "count": 2382973,
                "maximum": 22.23011034,
                "minimum": -13.24988966,
                "name": "Z",
                "position": 2,
                "stddev": 1.545185273,
                "variance": 2.387597529
              },
              {
                "average": 23327.74698,
                "count": 2382973,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12080.62975,
                "variance": 145941615.1
              },
              {
                "average": 1.006259828,
                "count": 2382973,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08024773451,
                "variance": 0.006439698894
              },
              {
                "average": 1.012508744,
                "count": 2382973,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1140552678,
                "variance": 0.01300860411
              },
              {
                "average": 0.503394709,
                "count": 2382973,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999885807,
                "variance": 0.2499885809
              },
              {
                "average": 0.0005060905012,
                "count": 2382973,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02249076668,
                "variance": 0.0005058345859
              },
              {
                "average": 3.495106323,
                "count": 2382973,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.405963334,
                "variance": 11.60058624
              },
              {
                "average": 0.2789522501,
                "count": 2382973,
                "maximum": 16.44000053,
                "minimum": -15.72599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.02418679,
                "variance": 100.4843207
              },
              {
                "average": 0.5239324994,
                "count": 2382973,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994270118,
                "variance": 0.2494273401
              },
              {
                "average": 404.8012193,
                "count": 2382973,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8821312282,
                "variance": 0.7781555038
              },
              {
                "average": 220414350,
                "count": 2382973,
                "maximum": 220415002.3,
                "minimum": 220413411.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 498.3341685,
                "variance": 248336.9435
              },
              {
                "average": 0.5239324994,
                "count": 2382973,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994270118,
                "variance": 0.2494273401
              },
              {
                "average": 0,
                "count": 2382973,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2382973,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2382973,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.221033138,
                "count": 2382973,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4149428421,
                "variance": 0.1721775622
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101074.4423,
              2369516.794,
              -13.24988966,
              -100578.7223,
              2369990.174,
              22.23011034
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101074.44229067759,
                    2369516.794161824,
                    -13.24988966332487
                  ],
                  [
                    -101074.44229067759,
                    2369990.174161824,
                    -13.24988966332487
                  ],
                  [
                    -100578.72229067759,
                    2369990.174161824,
                    22.230110336675132
                  ],
                  [
                    -100578.72229067759,
                    2369516.794161824,
                    22.230110336675132
                  ],
                  [
                    -101074.44229067759,
                    2369516.794161824,
                    -13.24988966332487
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:02+00:00",
            "end_time": "2018-09-08T03:43:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2154.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64153387935005,
              71.2916699669455,
              2.729961552558692
            ],
            [
              -156.64204699571926,
              71.296017744981,
              2.729961552558692
            ],
            [
              -156.62854739640204,
              71.29619847883637,
              9.049961552558692
            ],
            [
              -156.62803689632148,
              71.29185066041346,
              9.049961552558692
            ],
            [
              -156.64153387935005,
              71.2916699669455,
              2.729961552558692
            ]
          ]
        ]
      },
      "bbox": [
        -156.642047,
        71.29166997,
        2.729961553,
        -156.6280369,
        71.29619848,
        9.049961553
      ],
      "properties": {
        "datetime": "2018-09-11T17:49:14Z",
        "pc:count": 3676153,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96705.35716,
            "count": 3676153,
            "maximum": -96452.69353,
            "minimum": -96948.57353,
            "name": "X",
            "position": 0,
            "stddev": 135.3425749,
            "variance": 18317.61257
          },
          {
            "average": 2368152.383,
            "count": 3676153,
            "maximum": 2368397.184,
            "minimum": 2367923.564,
            "name": "Y",
            "position": 1,
            "stddev": 125.6846943,
            "variance": 15796.64239
          },
          {
            "average": 4.970137718,
            "count": 3676153,
            "maximum": 9.049961553,
            "minimum": 2.729961553,
            "name": "Z",
            "position": 2,
            "stddev": 0.7414490492,
            "variance": 0.5497466926
          },
          {
            "average": 40295.3237,
            "count": 3676153,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12729.84753,
            "variance": 162049018.3
          },
          {
            "average": 1.000001088,
            "count": 3676153,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001043117015,
            "variance": 1.088093106e-06
          },
          {
            "average": 1.000002176,
            "count": 3676153,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001475189426,
            "variance": 2.176183844e-06
          },
          {
            "average": 0.5065948017,
            "count": 3676153,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999565747,
            "variance": 0.2499565766
          },
          {
            "average": 0.0004765851693,
            "count": 3676153,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02182563093,
            "variance": 0.0004763581655
          },
          {
            "average": 1.260150489,
            "count": 3676153,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4571620635,
            "variance": 0.2089971523
          },
          {
            "average": -2.670164497,
            "count": 3676153,
            "maximum": 16.45800018,
            "minimum": -19.62599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.70742405,
            "variance": 114.6489298
          },
          {
            "average": 0.4953732883,
            "count": 3676153,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999786611,
            "variance": 0.2499786615
          },
          {
            "average": 423.0566078,
            "count": 3676153,
            "maximum": 457,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.52225415,
            "variance": 272.9848823
          },
          {
            "average": 220479075.3,
            "count": 3676153,
            "maximum": 220723354.6,
            "minimum": 220418982.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 120082.6435,
            "variance": 14419841270.0
          },
          {
            "average": 0.4953732883,
            "count": 3676153,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999786611,
            "variance": 0.2499786615
          },
          {
            "average": 0,
            "count": 3676153,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3676153,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3676153,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.209043258,
            "count": 3676153,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4066254041,
            "variance": 0.1653442193
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96948.57353,
          2367923.564,
          2.729961553,
          -96452.69353,
          2368397.184,
          9.049961553
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96948.57352928523,
                2367923.5636812323,
                2.729961552558692
              ],
              [
                -96948.57352928523,
                2368397.1836812324,
                2.729961552558692
              ],
              [
                -96452.69352928523,
                2368397.1836812324,
                9.049961552558692
              ],
              [
                -96452.69352928523,
                2367923.5636812323,
                9.049961552558692
              ],
              [
                -96948.57352928523,
                2367923.5636812323,
                2.729961552558692
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:49:14+00:00",
        "end_time": "2018-09-08T05:16:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2154.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2154.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2154.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2154.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.642047,
            71.29166997,
            2.729961553,
            -156.6280369,
            71.29619848,
            9.049961553
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64153387935005,
                  71.2916699669455,
                  2.729961552558692
                ],
                [
                  -156.64204699571926,
                  71.296017744981,
                  2.729961552558692
                ],
                [
                  -156.62854739640204,
                  71.29619847883637,
                  9.049961552558692
                ],
                [
                  -156.62803689632148,
                  71.29185066041346,
                  9.049961552558692
                ],
                [
                  -156.64153387935005,
                  71.2916699669455,
                  2.729961552558692
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2154.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2154.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:49:14Z",
            "pc:count": 3676153,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96705.35716,
                "count": 3676153,
                "maximum": -96452.69353,
                "minimum": -96948.57353,
                "name": "X",
                "position": 0,
                "stddev": 135.3425749,
                "variance": 18317.61257
              },
              {
                "average": 2368152.383,
                "count": 3676153,
                "maximum": 2368397.184,
                "minimum": 2367923.564,
                "name": "Y",
                "position": 1,
                "stddev": 125.6846943,
                "variance": 15796.64239
              },
              {
                "average": 4.970137718,
                "count": 3676153,
                "maximum": 9.049961553,
                "minimum": 2.729961553,
                "name": "Z",
                "position": 2,
                "stddev": 0.7414490492,
                "variance": 0.5497466926
              },
              {
                "average": 40295.3237,
                "count": 3676153,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12729.84753,
                "variance": 162049018.3
              },
              {
                "average": 1.000001088,
                "count": 3676153,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001043117015,
                "variance": 1.088093106e-06
              },
              {
                "average": 1.000002176,
                "count": 3676153,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001475189426,
                "variance": 2.176183844e-06
              },
              {
                "average": 0.5065948017,
                "count": 3676153,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999565747,
                "variance": 0.2499565766
              },
              {
                "average": 0.0004765851693,
                "count": 3676153,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02182563093,
                "variance": 0.0004763581655
              },
              {
                "average": 1.260150489,
                "count": 3676153,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4571620635,
                "variance": 0.2089971523
              },
              {
                "average": -2.670164497,
                "count": 3676153,
                "maximum": 16.45800018,
                "minimum": -19.62599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.70742405,
                "variance": 114.6489298
              },
              {
                "average": 0.4953732883,
                "count": 3676153,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999786611,
                "variance": 0.2499786615
              },
              {
                "average": 423.0566078,
                "count": 3676153,
                "maximum": 457,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.52225415,
                "variance": 272.9848823
              },
              {
                "average": 220479075.3,
                "count": 3676153,
                "maximum": 220723354.6,
                "minimum": 220418982.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 120082.6435,
                "variance": 14419841270.0
              },
              {
                "average": 0.4953732883,
                "count": 3676153,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999786611,
                "variance": 0.2499786615
              },
              {
                "average": 0,
                "count": 3676153,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3676153,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3676153,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.209043258,
                "count": 3676153,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4066254041,
                "variance": 0.1653442193
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96948.57353,
              2367923.564,
              2.729961553,
              -96452.69353,
              2368397.184,
              9.049961553
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96948.57352928523,
                    2367923.5636812323,
                    2.729961552558692
                  ],
                  [
                    -96948.57352928523,
                    2368397.1836812324,
                    2.729961552558692
                  ],
                  [
                    -96452.69352928523,
                    2368397.1836812324,
                    9.049961552558692
                  ],
                  [
                    -96452.69352928523,
                    2367923.5636812323,
                    9.049961552558692
                  ],
                  [
                    -96948.57352928523,
                    2367923.5636812323,
                    2.729961552558692
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:49:14+00:00",
            "end_time": "2018-09-08T05:16:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2007.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.84438404800974,
              71.27667707139018,
              0.899847224940049
            ],
            [
              -156.84490872794493,
              71.2808078126722,
              0.899847224940049
            ],
            [
              -156.83378763276002,
              71.28096833757911,
              1.539847224940049
            ],
            [
              -156.83326499887252,
              71.27683756224582,
              1.539847224940049
            ],
            [
              -156.84438404800974,
              71.27667707139018,
              0.899847224940049
            ]
          ]
        ]
      },
      "bbox": [
        -156.8449087,
        71.27667707,
        0.8998472249,
        -156.833265,
        71.28096834,
        1.539847225
      ],
      "properties": {
        "datetime": "2018-09-08T04:22:10Z",
        "pc:count": 876433,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -104194.1009,
            "count": 876433,
            "maximum": -104050.1522,
            "minimum": -104458.9922,
            "name": "X",
            "position": 0,
            "stddev": 92.08087063,
            "variance": 8478.886736
          },
          {
            "average": 2366792.009,
            "count": 876433,
            "maximum": 2367050.582,
            "minimum": 2366600.502,
            "name": "Y",
            "position": 1,
            "stddev": 119.9600536,
            "variance": 14390.41445
          },
          {
            "average": 1.173583038,
            "count": 876433,
            "maximum": 1.539847225,
            "minimum": 0.8998472249,
            "name": "Z",
            "position": 2,
            "stddev": 0.06478270776,
            "variance": 0.004196799224
          },
          {
            "average": 15800.34802,
            "count": 876433,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11849.12991,
            "variance": 140401879.6
          },
          {
            "average": 1,
            "count": 876433,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 876433,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4957241455,
            "count": 876433,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499982002,
            "variance": 0.2499820023
          },
          {
            "average": 0.0004849201251,
            "count": 876433,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02201557473,
            "variance": 0.0004846855306
          },
          {
            "average": 7.673523247,
            "count": 876433,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.490277335,
            "variance": 6.201481204
          },
          {
            "average": 1.640846353,
            "count": 876433,
            "maximum": 16.20000076,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.666025195,
            "variance": 58.7679423
          },
          {
            "average": 0.4881936212,
            "count": 876433,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998608752,
            "variance": 0.2498608945
          },
          {
            "average": 405.129282,
            "count": 876433,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6658216096,
            "variance": 0.4433184159
          },
          {
            "average": 220414561.9,
            "count": 876433,
            "maximum": 220415730.9,
            "minimum": 220413783.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 370.7051403,
            "variance": 137422.3011
          },
          {
            "average": 0.4881936212,
            "count": 876433,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998608752,
            "variance": 0.2498608945
          },
          {
            "average": 0,
            "count": 876433,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 876433,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 876433,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04446318201,
            "count": 876433,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2061219443,
            "variance": 0.04248625593
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104458.9922,
          2366600.502,
          0.8998472249,
          -104050.1522,
          2367050.582,
          1.539847225
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104458.99217209259,
                2366600.5024038665,
                0.899847224940049
              ],
              [
                -104458.99217209259,
                2367050.5824038666,
                0.899847224940049
              ],
              [
                -104050.1521720926,
                2367050.5824038666,
                1.539847224940049
              ],
              [
                -104050.1521720926,
                2366600.5024038665,
                1.539847224940049
              ],
              [
                -104458.99217209259,
                2366600.5024038665,
                0.899847224940049
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:22:10+00:00",
        "end_time": "2018-09-08T03:49:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2007.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2007.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2007.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2007.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8449087,
            71.27667707,
            0.8998472249,
            -156.833265,
            71.28096834,
            1.539847225
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.84438404800974,
                  71.27667707139018,
                  0.899847224940049
                ],
                [
                  -156.84490872794493,
                  71.2808078126722,
                  0.899847224940049
                ],
                [
                  -156.83378763276002,
                  71.28096833757911,
                  1.539847224940049
                ],
                [
                  -156.83326499887252,
                  71.27683756224582,
                  1.539847224940049
                ],
                [
                  -156.84438404800974,
                  71.27667707139018,
                  0.899847224940049
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2007.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2007.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:22:10Z",
            "pc:count": 876433,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -104194.1009,
                "count": 876433,
                "maximum": -104050.1522,
                "minimum": -104458.9922,
                "name": "X",
                "position": 0,
                "stddev": 92.08087063,
                "variance": 8478.886736
              },
              {
                "average": 2366792.009,
                "count": 876433,
                "maximum": 2367050.582,
                "minimum": 2366600.502,
                "name": "Y",
                "position": 1,
                "stddev": 119.9600536,
                "variance": 14390.41445
              },
              {
                "average": 1.173583038,
                "count": 876433,
                "maximum": 1.539847225,
                "minimum": 0.8998472249,
                "name": "Z",
                "position": 2,
                "stddev": 0.06478270776,
                "variance": 0.004196799224
              },
              {
                "average": 15800.34802,
                "count": 876433,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11849.12991,
                "variance": 140401879.6
              },
              {
                "average": 1,
                "count": 876433,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 876433,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4957241455,
                "count": 876433,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499982002,
                "variance": 0.2499820023
              },
              {
                "average": 0.0004849201251,
                "count": 876433,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02201557473,
                "variance": 0.0004846855306
              },
              {
                "average": 7.673523247,
                "count": 876433,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.490277335,
                "variance": 6.201481204
              },
              {
                "average": 1.640846353,
                "count": 876433,
                "maximum": 16.20000076,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.666025195,
                "variance": 58.7679423
              },
              {
                "average": 0.4881936212,
                "count": 876433,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998608752,
                "variance": 0.2498608945
              },
              {
                "average": 405.129282,
                "count": 876433,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6658216096,
                "variance": 0.4433184159
              },
              {
                "average": 220414561.9,
                "count": 876433,
                "maximum": 220415730.9,
                "minimum": 220413783.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 370.7051403,
                "variance": 137422.3011
              },
              {
                "average": 0.4881936212,
                "count": 876433,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998608752,
                "variance": 0.2498608945
              },
              {
                "average": 0,
                "count": 876433,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 876433,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 876433,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04446318201,
                "count": 876433,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2061219443,
                "variance": 0.04248625593
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104458.9922,
              2366600.502,
              0.8998472249,
              -104050.1522,
              2367050.582,
              1.539847225
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104458.99217209259,
                    2366600.5024038665,
                    0.899847224940049
                  ],
                  [
                    -104458.99217209259,
                    2367050.5824038666,
                    0.899847224940049
                  ],
                  [
                    -104050.1521720926,
                    2367050.5824038666,
                    1.539847224940049
                  ],
                  [
                    -104050.1521720926,
                    2366600.5024038665,
                    1.539847224940049
                  ],
                  [
                    -104458.99217209259,
                    2366600.5024038665,
                    0.899847224940049
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:22:10+00:00",
            "end_time": "2018-09-08T03:49:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2150.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69259182725415,
              71.29203150238536,
              1.96818553516159
            ],
            [
              -156.69311468792782,
              71.29637768793512,
              1.96818553516159
            ],
            [
              -156.6796169201142,
              71.2965619004419,
              6.94818553516159
            ],
            [
              -156.6790966742907,
              71.29221567374155,
              6.94818553516159
            ],
            [
              -156.69259182725415,
              71.29203150238536,
              1.96818553516159
            ]
          ]
        ]
      },
      "bbox": [
        -156.6931147,
        71.2920315,
        1.968185535,
        -156.6790967,
        71.2965619,
        6.948185535
      ],
      "properties": {
        "datetime": "2018-09-08T05:16:54Z",
        "pc:count": 2996797,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98566.13757,
            "count": 2996797,
            "maximum": -98324.05068,
            "minimum": -98819.87068,
            "name": "X",
            "position": 0,
            "stddev": 135.8898202,
            "variance": 18466.04324
          },
          {
            "average": 2368274.294,
            "count": 2996797,
            "maximum": 2368511.6,
            "minimum": 2368038.14,
            "name": "Y",
            "position": 1,
            "stddev": 129.7013008,
            "variance": 16822.42744
          },
          {
            "average": 5.310723618,
            "count": 2996797,
            "maximum": 6.948185535,
            "minimum": 1.968185535,
            "name": "Z",
            "position": 2,
            "stddev": 0.9148696065,
            "variance": 0.8369863969
          },
          {
            "average": 42827.78658,
            "count": 2996797,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9456.676839,
            "variance": 89428736.84
          },
          {
            "average": 1,
            "count": 2996797,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2996797,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.498391783,
            "count": 2996797,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999974971,
            "variance": 0.2499974971
          },
          {
            "average": 0.0004261216225,
            "count": 2996797,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02063831837,
            "variance": 0.000425940185
          },
          {
            "average": 1.307984825,
            "count": 2996797,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4631483349,
            "variance": 0.2145063801
          },
          {
            "average": -0.2547801543,
            "count": 2996797,
            "maximum": 16.29000092,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.16880846,
            "variance": 103.4046655
          },
          {
            "average": 0.4560295542,
            "count": 2996797,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980629304,
            "variance": 0.2480666827
          },
          {
            "average": 411.5649432,
            "count": 2996797,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9437749999,
            "variance": 0.8907112505
          },
          {
            "average": 220418181,
            "count": 2996797,
            "maximum": 220419014.3,
            "minimum": 220417261.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 530.0659764,
            "variance": 280969.9393
          },
          {
            "average": 0.4560295542,
            "count": 2996797,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980629304,
            "variance": 0.2480666827
          },
          {
            "average": 0,
            "count": 2996797,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2996797,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2996797,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2132299919,
            "count": 2996797,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4095888407,
            "variance": 0.1677630184
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98819.87068,
          2368038.14,
          1.968185535,
          -98324.05068,
          2368511.6,
          6.948185535
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98819.87067903252,
                2368038.1398161533,
                1.96818553516159
              ],
              [
                -98819.87067903252,
                2368511.5998161533,
                1.96818553516159
              ],
              [
                -98324.05067903252,
                2368511.5998161533,
                6.94818553516159
              ],
              [
                -98324.05067903252,
                2368038.1398161533,
                6.94818553516159
              ],
              [
                -98819.87067903252,
                2368038.1398161533,
                1.96818553516159
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:16:54+00:00",
        "end_time": "2018-09-08T04:47:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2150.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2150.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2150.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2150.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6931147,
            71.2920315,
            1.968185535,
            -156.6790967,
            71.2965619,
            6.948185535
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69259182725415,
                  71.29203150238536,
                  1.96818553516159
                ],
                [
                  -156.69311468792782,
                  71.29637768793512,
                  1.96818553516159
                ],
                [
                  -156.6796169201142,
                  71.2965619004419,
                  6.94818553516159
                ],
                [
                  -156.6790966742907,
                  71.29221567374155,
                  6.94818553516159
                ],
                [
                  -156.69259182725415,
                  71.29203150238536,
                  1.96818553516159
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2150.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2150.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:16:54Z",
            "pc:count": 2996797,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98566.13757,
                "count": 2996797,
                "maximum": -98324.05068,
                "minimum": -98819.87068,
                "name": "X",
                "position": 0,
                "stddev": 135.8898202,
                "variance": 18466.04324
              },
              {
                "average": 2368274.294,
                "count": 2996797,
                "maximum": 2368511.6,
                "minimum": 2368038.14,
                "name": "Y",
                "position": 1,
                "stddev": 129.7013008,
                "variance": 16822.42744
              },
              {
                "average": 5.310723618,
                "count": 2996797,
                "maximum": 6.948185535,
                "minimum": 1.968185535,
                "name": "Z",
                "position": 2,
                "stddev": 0.9148696065,
                "variance": 0.8369863969
              },
              {
                "average": 42827.78658,
                "count": 2996797,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9456.676839,
                "variance": 89428736.84
              },
              {
                "average": 1,
                "count": 2996797,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2996797,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.498391783,
                "count": 2996797,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999974971,
                "variance": 0.2499974971
              },
              {
                "average": 0.0004261216225,
                "count": 2996797,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02063831837,
                "variance": 0.000425940185
              },
              {
                "average": 1.307984825,
                "count": 2996797,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4631483349,
                "variance": 0.2145063801
              },
              {
                "average": -0.2547801543,
                "count": 2996797,
                "maximum": 16.29000092,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.16880846,
                "variance": 103.4046655
              },
              {
                "average": 0.4560295542,
                "count": 2996797,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980629304,
                "variance": 0.2480666827
              },
              {
                "average": 411.5649432,
                "count": 2996797,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9437749999,
                "variance": 0.8907112505
              },
              {
                "average": 220418181,
                "count": 2996797,
                "maximum": 220419014.3,
                "minimum": 220417261.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 530.0659764,
                "variance": 280969.9393
              },
              {
                "average": 0.4560295542,
                "count": 2996797,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980629304,
                "variance": 0.2480666827
              },
              {
                "average": 0,
                "count": 2996797,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2996797,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2996797,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2132299919,
                "count": 2996797,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4095888407,
                "variance": 0.1677630184
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98819.87068,
              2368038.14,
              1.968185535,
              -98324.05068,
              2368511.6,
              6.948185535
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98819.87067903252,
                    2368038.1398161533,
                    1.96818553516159
                  ],
                  [
                    -98819.87067903252,
                    2368511.5998161533,
                    1.96818553516159
                  ],
                  [
                    -98324.05067903252,
                    2368511.5998161533,
                    6.94818553516159
                  ],
                  [
                    -98324.05067903252,
                    2368038.1398161533,
                    6.94818553516159
                  ],
                  [
                    -98819.87067903252,
                    2368038.1398161533,
                    1.96818553516159
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:16:54+00:00",
            "end_time": "2018-09-08T04:47:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2046.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7954736423913,
              71.28042060930638,
              5.660408065322855
            ],
            [
              -156.79601644040423,
              71.28476819533688,
              5.660408065322855
            ],
            [
              -156.78252870341308,
              71.28495941457166,
              24.300408065322856
            ],
            [
              -156.78198851766516,
              71.2806117858402,
              24.300408065322856
            ],
            [
              -156.7954736423913,
              71.28042060930638,
              5.660408065322855
            ]
          ]
        ]
      },
      "bbox": [
        -156.7960164,
        71.28042061,
        5.660408065,
        -156.7819885,
        71.28495941,
        24.30040807
      ],
      "properties": {
        "datetime": "2018-09-08T04:40:55Z",
        "pc:count": 2702329,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102405.9429,
            "count": 2702329,
            "maximum": -102150.9565,
            "minimum": -102646.6965,
            "name": "X",
            "position": 0,
            "stddev": 133.6010629,
            "variance": 17849.24402
          },
          {
            "average": 2367170.756,
            "count": 2702329,
            "maximum": 2367405.068,
            "minimum": 2366931.388,
            "name": "Y",
            "position": 1,
            "stddev": 131.1787427,
            "variance": 17207.86252
          },
          {
            "average": 12.65199765,
            "count": 2702329,
            "maximum": 24.30040807,
            "minimum": 5.660408065,
            "name": "Z",
            "position": 2,
            "stddev": 0.8425355685,
            "variance": 0.7098661842
          },
          {
            "average": 29900.08154,
            "count": 2702329,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11104.79029,
            "variance": 123316367.3
          },
          {
            "average": 1.00079228,
            "count": 2702329,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02863173124,
            "variance": 0.0008197760337
          },
          {
            "average": 1.001578638,
            "count": 2702329,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04074945963,
            "variance": 0.00166051846
          },
          {
            "average": 0.499898791,
            "count": 2702329,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000823,
            "variance": 0.2500000823
          },
          {
            "average": 0.0004781061077,
            "count": 2702329,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02186041397,
            "variance": 0.0004778776991
          },
          {
            "average": 1.347618295,
            "count": 2702329,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5190035298,
            "variance": 0.2693646639
          },
          {
            "average": -0.6155566409,
            "count": 2702329,
            "maximum": 16.40999985,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.36004033,
            "variance": 107.3304356
          },
          {
            "average": 0.4568203946,
            "count": 2702329,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981321245,
            "variance": 0.2481356135
          },
          {
            "average": 407.3326468,
            "count": 2702329,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9553732997,
            "variance": 0.9127381418
          },
          {
            "average": 220415785.4,
            "count": 2702329,
            "maximum": 220416855.7,
            "minimum": 220414940.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 568.4711155,
            "variance": 323159.4091
          },
          {
            "average": 0.4568203946,
            "count": 2702329,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981321245,
            "variance": 0.2481356135
          },
          {
            "average": 0,
            "count": 2702329,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2702329,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2702329,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2245218846,
            "count": 2702329,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4172671475,
            "variance": 0.1741118724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102646.6965,
          2366931.388,
          5.660408065,
          -102150.9565,
          2367405.068,
          24.30040807
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102646.69646443515,
                2366931.387763916,
                5.660408065322855
              ],
              [
                -102646.69646443515,
                2367405.0677639158,
                5.660408065322855
              ],
              [
                -102150.95646443516,
                2367405.0677639158,
                24.300408065322856
              ],
              [
                -102150.95646443516,
                2366931.387763916,
                24.300408065322856
              ],
              [
                -102646.69646443515,
                2366931.387763916,
                5.660408065322855
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:40:55+00:00",
        "end_time": "2018-09-08T04:09:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2046.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2046.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2046.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2046.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7960164,
            71.28042061,
            5.660408065,
            -156.7819885,
            71.28495941,
            24.30040807
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7954736423913,
                  71.28042060930638,
                  5.660408065322855
                ],
                [
                  -156.79601644040423,
                  71.28476819533688,
                  5.660408065322855
                ],
                [
                  -156.78252870341308,
                  71.28495941457166,
                  24.300408065322856
                ],
                [
                  -156.78198851766516,
                  71.2806117858402,
                  24.300408065322856
                ],
                [
                  -156.7954736423913,
                  71.28042060930638,
                  5.660408065322855
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2046.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2046.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:40:55Z",
            "pc:count": 2702329,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102405.9429,
                "count": 2702329,
                "maximum": -102150.9565,
                "minimum": -102646.6965,
                "name": "X",
                "position": 0,
                "stddev": 133.6010629,
                "variance": 17849.24402
              },
              {
                "average": 2367170.756,
                "count": 2702329,
                "maximum": 2367405.068,
                "minimum": 2366931.388,
                "name": "Y",
                "position": 1,
                "stddev": 131.1787427,
                "variance": 17207.86252
              },
              {
                "average": 12.65199765,
                "count": 2702329,
                "maximum": 24.30040807,
                "minimum": 5.660408065,
                "name": "Z",
                "position": 2,
                "stddev": 0.8425355685,
                "variance": 0.7098661842
              },
              {
                "average": 29900.08154,
                "count": 2702329,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11104.79029,
                "variance": 123316367.3
              },
              {
                "average": 1.00079228,
                "count": 2702329,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02863173124,
                "variance": 0.0008197760337
              },
              {
                "average": 1.001578638,
                "count": 2702329,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04074945963,
                "variance": 0.00166051846
              },
              {
                "average": 0.499898791,
                "count": 2702329,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000823,
                "variance": 0.2500000823
              },
              {
                "average": 0.0004781061077,
                "count": 2702329,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02186041397,
                "variance": 0.0004778776991
              },
              {
                "average": 1.347618295,
                "count": 2702329,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5190035298,
                "variance": 0.2693646639
              },
              {
                "average": -0.6155566409,
                "count": 2702329,
                "maximum": 16.40999985,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.36004033,
                "variance": 107.3304356
              },
              {
                "average": 0.4568203946,
                "count": 2702329,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981321245,
                "variance": 0.2481356135
              },
              {
                "average": 407.3326468,
                "count": 2702329,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9553732997,
                "variance": 0.9127381418
              },
              {
                "average": 220415785.4,
                "count": 2702329,
                "maximum": 220416855.7,
                "minimum": 220414940.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 568.4711155,
                "variance": 323159.4091
              },
              {
                "average": 0.4568203946,
                "count": 2702329,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981321245,
                "variance": 0.2481356135
              },
              {
                "average": 0,
                "count": 2702329,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2702329,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2702329,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2245218846,
                "count": 2702329,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4172671475,
                "variance": 0.1741118724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102646.6965,
              2366931.388,
              5.660408065,
              -102150.9565,
              2367405.068,
              24.30040807
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102646.69646443515,
                    2366931.387763916,
                    5.660408065322855
                  ],
                  [
                    -102646.69646443515,
                    2367405.0677639158,
                    5.660408065322855
                  ],
                  [
                    -102150.95646443516,
                    2367405.0677639158,
                    24.300408065322856
                  ],
                  [
                    -102150.95646443516,
                    2366931.387763916,
                    24.300408065322856
                  ],
                  [
                    -102646.69646443515,
                    2366931.387763916,
                    5.660408065322855
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:40:55+00:00",
            "end_time": "2018-09-08T04:09:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2008.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8339894116162,
              71.27656435144472,
              0.867200110805476
            ],
            [
              -156.83453958903456,
              71.28091171759891,
              0.867200110805476
            ],
            [
              -156.82105667975827,
              71.28110554005794,
              14.527200110805477
            ],
            [
              -156.82050911302804,
              71.27675813063328,
              14.527200110805477
            ],
            [
              -156.8339894116162,
              71.27656435144472,
              0.867200110805476
            ]
          ]
        ]
      },
      "bbox": [
        -156.8345396,
        71.27656435,
        0.8672001108,
        -156.8205091,
        71.28110554,
        14.52720011
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:30Z",
        "pc:count": 2533909,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103808.5456,
            "count": 2533909,
            "maximum": -103582.3485,
            "minimum": -104078.0085,
            "name": "X",
            "position": 0,
            "stddev": 131.4081886,
            "variance": 17268.11202
          },
          {
            "average": 2366792.988,
            "count": 2533909,
            "maximum": 2367045.603,
            "minimum": 2366571.923,
            "name": "Y",
            "position": 1,
            "stddev": 126.4708352,
            "variance": 15994.87216
          },
          {
            "average": 2.890240607,
            "count": 2533909,
            "maximum": 14.52720011,
            "minimum": 0.8672001108,
            "name": "Z",
            "position": 2,
            "stddev": 2.73465044,
            "variance": 7.478313029
          },
          {
            "average": 19865.26571,
            "count": 2533909,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11579.72194,
            "variance": 134089960.1
          },
          {
            "average": 1.000822839,
            "count": 2533909,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02875584052,
            "variance": 0.0008268983641
          },
          {
            "average": 1.001645284,
            "count": 2533909,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04070362414,
            "variance": 0.001656785018
          },
          {
            "average": 0.4943164889,
            "count": 2533909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999677953,
            "variance": 0.2499677964
          },
          {
            "average": 0.0004238510538,
            "count": 2533909,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02058328378,
            "variance": 0.0004236715713
          },
          {
            "average": 4.906182108,
            "count": 2533909,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.745166707,
            "variance": 14.02627366
          },
          {
            "average": 2.863775688,
            "count": 2533909,
            "maximum": 16.34399986,
            "minimum": -16.03199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.6547899,
            "variance": 74.90538821
          },
          {
            "average": 0.5017642701,
            "count": 2533909,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499996986,
            "variance": 0.249996986
          },
          {
            "average": 405.6899455,
            "count": 2533909,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7718151842,
            "variance": 0.5956986786
          },
          {
            "average": 220414895.9,
            "count": 2533909,
            "maximum": 220416050.8,
            "minimum": 220413790.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 424.2267467,
            "variance": 179968.3326
          },
          {
            "average": 0.5017642701,
            "count": 2533909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499996986,
            "variance": 0.249996986
          },
          {
            "average": 0,
            "count": 2533909,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2533909,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2533909,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1040917413,
            "count": 2533909,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3053795793,
            "variance": 0.09325668746
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -104078.0085,
          2366571.923,
          0.8672001108,
          -103582.3485,
          2367045.603,
          14.52720011
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -104078.00849643843,
                2366571.9228211376,
                0.867200110805476
              ],
              [
                -104078.00849643843,
                2367045.6028211373,
                0.867200110805476
              ],
              [
                -103582.34849643843,
                2367045.6028211373,
                14.527200110805477
              ],
              [
                -103582.34849643843,
                2366571.9228211376,
                14.527200110805477
              ],
              [
                -104078.00849643843,
                2366571.9228211376,
                0.867200110805476
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:30+00:00",
        "end_time": "2018-09-08T03:49:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2008.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2008.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2008.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2008.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8345396,
            71.27656435,
            0.8672001108,
            -156.8205091,
            71.28110554,
            14.52720011
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8339894116162,
                  71.27656435144472,
                  0.867200110805476
                ],
                [
                  -156.83453958903456,
                  71.28091171759891,
                  0.867200110805476
                ],
                [
                  -156.82105667975827,
                  71.28110554005794,
                  14.527200110805477
                ],
                [
                  -156.82050911302804,
                  71.27675813063328,
                  14.527200110805477
                ],
                [
                  -156.8339894116162,
                  71.27656435144472,
                  0.867200110805476
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2008.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2008.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:30Z",
            "pc:count": 2533909,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103808.5456,
                "count": 2533909,
                "maximum": -103582.3485,
                "minimum": -104078.0085,
                "name": "X",
                "position": 0,
                "stddev": 131.4081886,
                "variance": 17268.11202
              },
              {
                "average": 2366792.988,
                "count": 2533909,
                "maximum": 2367045.603,
                "minimum": 2366571.923,
                "name": "Y",
                "position": 1,
                "stddev": 126.4708352,
                "variance": 15994.87216
              },
              {
                "average": 2.890240607,
                "count": 2533909,
                "maximum": 14.52720011,
                "minimum": 0.8672001108,
                "name": "Z",
                "position": 2,
                "stddev": 2.73465044,
                "variance": 7.478313029
              },
              {
                "average": 19865.26571,
                "count": 2533909,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11579.72194,
                "variance": 134089960.1
              },
              {
                "average": 1.000822839,
                "count": 2533909,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02875584052,
                "variance": 0.0008268983641
              },
              {
                "average": 1.001645284,
                "count": 2533909,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04070362414,
                "variance": 0.001656785018
              },
              {
                "average": 0.4943164889,
                "count": 2533909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999677953,
                "variance": 0.2499677964
              },
              {
                "average": 0.0004238510538,
                "count": 2533909,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02058328378,
                "variance": 0.0004236715713
              },
              {
                "average": 4.906182108,
                "count": 2533909,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.745166707,
                "variance": 14.02627366
              },
              {
                "average": 2.863775688,
                "count": 2533909,
                "maximum": 16.34399986,
                "minimum": -16.03199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.6547899,
                "variance": 74.90538821
              },
              {
                "average": 0.5017642701,
                "count": 2533909,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499996986,
                "variance": 0.249996986
              },
              {
                "average": 405.6899455,
                "count": 2533909,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7718151842,
                "variance": 0.5956986786
              },
              {
                "average": 220414895.9,
                "count": 2533909,
                "maximum": 220416050.8,
                "minimum": 220413790.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 424.2267467,
                "variance": 179968.3326
              },
              {
                "average": 0.5017642701,
                "count": 2533909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499996986,
                "variance": 0.249996986
              },
              {
                "average": 0,
                "count": 2533909,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2533909,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2533909,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1040917413,
                "count": 2533909,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3053795793,
                "variance": 0.09325668746
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -104078.0085,
              2366571.923,
              0.8672001108,
              -103582.3485,
              2367045.603,
              14.52720011
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -104078.00849643843,
                    2366571.9228211376,
                    0.867200110805476
                  ],
                  [
                    -104078.00849643843,
                    2367045.6028211373,
                    0.867200110805476
                  ],
                  [
                    -103582.34849643843,
                    2367045.6028211373,
                    14.527200110805477
                  ],
                  [
                    -103582.34849643843,
                    2366571.9228211376,
                    14.527200110805477
                  ],
                  [
                    -104078.00849643843,
                    2366571.9228211376,
                    0.867200110805476
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:30+00:00",
            "end_time": "2018-09-08T03:49:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_1887.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74550257571033,
              71.26369899977969,
              7.982295438719244
            ],
            [
              -156.7460353012801,
              71.26804641686839,
              7.982295438719244
            ],
            [
              -156.73255774660575,
              71.26823418323268,
              11.882295438719243
            ],
            [
              -156.73202762973804,
              71.2638867242561,
              11.882295438719243
            ],
            [
              -156.74550257571033,
              71.26369899977969,
              7.982295438719244
            ]
          ]
        ]
      },
      "bbox": [
        -156.7460353,
        71.263699,
        7.982295439,
        -156.7320276,
        71.26823418,
        11.88229544
      ],
      "properties": {
        "datetime": "2018-09-11T18:13:05Z",
        "pc:count": 3324582,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100638.0695,
            "count": 3324582,
            "maximum": -100392.384,
            "minimum": -100888.104,
            "name": "X",
            "position": 0,
            "stddev": 136.2199959,
            "variance": 18555.88729
          },
          {
            "average": 2365266.204,
            "count": 3324582,
            "maximum": 2365509.722,
            "minimum": 2365036.022,
            "name": "Y",
            "position": 1,
            "stddev": 128.4692992,
            "variance": 16504.36083
          },
          {
            "average": 10.40582712,
            "count": 3324582,
            "maximum": 11.88229544,
            "minimum": 7.982295439,
            "name": "Z",
            "position": 2,
            "stddev": 0.5180907401,
            "variance": 0.2684180149
          },
          {
            "average": 42653.24254,
            "count": 3324582,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11288.24722,
            "variance": 127424525.4
          },
          {
            "average": 1,
            "count": 3324582,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3324582,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022192264,
            "count": 3324582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951502,
            "variance": 0.2499951502
          },
          {
            "average": 0.0003880187043,
            "count": 3324582,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01969437134,
            "variance": 0.0003878682625
          },
          {
            "average": 1.366354928,
            "count": 3324582,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9175744255,
            "variance": 0.8419428264
          },
          {
            "average": 1.657655059,
            "count": 3324582,
            "maximum": 20.52599907,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.88198994,
            "variance": 118.4177051
          },
          {
            "average": 0.5350116195,
            "count": 3324582,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987727552,
            "variance": 0.2487742613
          },
          {
            "average": 416.1751625,
            "count": 3324582,
            "maximum": 462,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 8.970376636,
            "variance": 80.46765699
          },
          {
            "average": 220430889.6,
            "count": 3324582,
            "maximum": 220724785.2,
            "minimum": 220419063.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 57194.06103,
            "variance": 3271160617
          },
          {
            "average": 0.5350116195,
            "count": 3324582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987727552,
            "variance": 0.2487742613
          },
          {
            "average": 0,
            "count": 3324582,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3324582,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3324582,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2691613562,
            "count": 3324582,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4435240464,
            "variance": 0.1967135797
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100888.104,
          2365036.022,
          7.982295439,
          -100392.384,
          2365509.722,
          11.88229544
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100888.10395832891,
                2365036.021750529,
                7.982295438719244
              ],
              [
                -100888.10395832891,
                2365509.721750529,
                7.982295438719244
              ],
              [
                -100392.38395832891,
                2365509.721750529,
                11.882295438719243
              ],
              [
                -100392.38395832891,
                2365036.021750529,
                11.882295438719243
              ],
              [
                -100888.10395832891,
                2365036.021750529,
                7.982295438719244
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T18:13:05+00:00",
        "end_time": "2018-09-08T05:17:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_1887.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_1887.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_1887.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1887.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7460353,
            71.263699,
            7.982295439,
            -156.7320276,
            71.26823418,
            11.88229544
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74550257571033,
                  71.26369899977969,
                  7.982295438719244
                ],
                [
                  -156.7460353012801,
                  71.26804641686839,
                  7.982295438719244
                ],
                [
                  -156.73255774660575,
                  71.26823418323268,
                  11.882295438719243
                ],
                [
                  -156.73202762973804,
                  71.2638867242561,
                  11.882295438719243
                ],
                [
                  -156.74550257571033,
                  71.26369899977969,
                  7.982295438719244
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_1887.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_1887.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T18:13:05Z",
            "pc:count": 3324582,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100638.0695,
                "count": 3324582,
                "maximum": -100392.384,
                "minimum": -100888.104,
                "name": "X",
                "position": 0,
                "stddev": 136.2199959,
                "variance": 18555.88729
              },
              {
                "average": 2365266.204,
                "count": 3324582,
                "maximum": 2365509.722,
                "minimum": 2365036.022,
                "name": "Y",
                "position": 1,
                "stddev": 128.4692992,
                "variance": 16504.36083
              },
              {
                "average": 10.40582712,
                "count": 3324582,
                "maximum": 11.88229544,
                "minimum": 7.982295439,
                "name": "Z",
                "position": 2,
                "stddev": 0.5180907401,
                "variance": 0.2684180149
              },
              {
                "average": 42653.24254,
                "count": 3324582,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11288.24722,
                "variance": 127424525.4
              },
              {
                "average": 1,
                "count": 3324582,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3324582,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022192264,
                "count": 3324582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951502,
                "variance": 0.2499951502
              },
              {
                "average": 0.0003880187043,
                "count": 3324582,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01969437134,
                "variance": 0.0003878682625
              },
              {
                "average": 1.366354928,
                "count": 3324582,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9175744255,
                "variance": 0.8419428264
              },
              {
                "average": 1.657655059,
                "count": 3324582,
                "maximum": 20.52599907,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.88198994,
                "variance": 118.4177051
              },
              {
                "average": 0.5350116195,
                "count": 3324582,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987727552,
                "variance": 0.2487742613
              },
              {
                "average": 416.1751625,
                "count": 3324582,
                "maximum": 462,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 8.970376636,
                "variance": 80.46765699
              },
              {
                "average": 220430889.6,
                "count": 3324582,
                "maximum": 220724785.2,
                "minimum": 220419063.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 57194.06103,
                "variance": 3271160617
              },
              {
                "average": 0.5350116195,
                "count": 3324582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987727552,
                "variance": 0.2487742613
              },
              {
                "average": 0,
                "count": 3324582,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3324582,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3324582,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2691613562,
                "count": 3324582,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4435240464,
                "variance": 0.1967135797
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100888.104,
              2365036.022,
              7.982295439,
              -100392.384,
              2365509.722,
              11.88229544
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100888.10395832891,
                    2365036.021750529,
                    7.982295438719244
                  ],
                  [
                    -100888.10395832891,
                    2365509.721750529,
                    7.982295438719244
                  ],
                  [
                    -100392.38395832891,
                    2365509.721750529,
                    11.882295438719243
                  ],
                  [
                    -100392.38395832891,
                    2365036.021750529,
                    11.882295438719243
                  ],
                  [
                    -100888.10395832891,
                    2365036.021750529,
                    7.982295438719244
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T18:13:05+00:00",
            "end_time": "2018-09-08T05:17:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2258.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6528754010899,
              71.31224595709162,
              3.419076983381731
            ],
            [
              -156.65339114968964,
              71.31659394356,
              3.419076983381731
            ],
            [
              -156.63987868289928,
              71.31677548717097,
              17.97907698338173
            ],
            [
              -156.63936555521497,
              71.31242746008398,
              17.97907698338173
            ],
            [
              -156.6528754010899,
              71.31224595709162,
              3.419076983381731
            ]
          ]
        ]
      },
      "bbox": [
        -156.6533911,
        71.31224596,
        3.419076983,
        -156.6393656,
        71.31677549,
        17.97907698
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:50Z",
        "pc:count": 3142502,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97025.00407,
            "count": 3142502,
            "maximum": -96779.26787,
            "minimum": -97275.16787,
            "name": "X",
            "position": 0,
            "stddev": 136.1008514,
            "variance": 18523.44175
          },
          {
            "average": 2370409.759,
            "count": 3142502,
            "maximum": 2370651.474,
            "minimum": 2370177.894,
            "name": "Y",
            "position": 1,
            "stddev": 129.0872117,
            "variance": 16663.50824
          },
          {
            "average": 5.931945437,
            "count": 3142502,
            "maximum": 17.97907698,
            "minimum": 3.419076983,
            "name": "Z",
            "position": 2,
            "stddev": 1.494477979,
            "variance": 2.233464429
          },
          {
            "average": 45379.85955,
            "count": 3142502,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8709.596317,
            "variance": 75857068.01
          },
          {
            "average": 1.000134924,
            "count": 3142502,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01293693933,
            "variance": 0.0001673643993
          },
          {
            "average": 1.000264439,
            "count": 3142502,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0190195636,
            "variance": 0.0003617437994
          },
          {
            "average": 0.4992528247,
            "count": 3142502,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995213,
            "variance": 0.2499995213
          },
          {
            "average": 0.0004273664742,
            "count": 3142502,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02066842926,
            "variance": 0.0004271839681
          },
          {
            "average": 1.331682207,
            "count": 3142502,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4726470194,
            "variance": 0.223395205
          },
          {
            "average": -0.5536808868,
            "count": 3142502,
            "maximum": 16.37400055,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.27841134,
            "variance": 105.6457396
          },
          {
            "average": 0.4597355865,
            "count": 3142502,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4983762194,
            "variance": 0.248378856
          },
          {
            "average": 409.6845221,
            "count": 3142502,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9492804195,
            "variance": 0.9011333149
          },
          {
            "average": 220417129.2,
            "count": 3142502,
            "maximum": 220417870.9,
            "minimum": 220416170.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 534.1505938,
            "variance": 285316.8569
          },
          {
            "average": 0.4597355865,
            "count": 3142502,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4983762194,
            "variance": 0.248378856
          },
          {
            "average": 0,
            "count": 3142502,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3142502,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3142502,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2174426619,
            "count": 3142502,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4125062483,
            "variance": 0.1701614049
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97275.16787,
          2370177.894,
          3.419076983,
          -96779.26787,
          2370651.474,
          17.97907698
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97275.16787465969,
                2370177.8941278094,
                3.419076983381731
              ],
              [
                -97275.16787465969,
                2370651.4741278095,
                3.419076983381731
              ],
              [
                -96779.2678746597,
                2370651.4741278095,
                17.97907698338173
              ],
              [
                -96779.2678746597,
                2370177.8941278094,
                17.97907698338173
              ],
              [
                -97275.16787465969,
                2370177.8941278094,
                3.419076983381731
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:50+00:00",
        "end_time": "2018-09-08T04:29:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2258.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2258.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2258.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2258.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6533911,
            71.31224596,
            3.419076983,
            -156.6393656,
            71.31677549,
            17.97907698
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6528754010899,
                  71.31224595709162,
                  3.419076983381731
                ],
                [
                  -156.65339114968964,
                  71.31659394356,
                  3.419076983381731
                ],
                [
                  -156.63987868289928,
                  71.31677548717097,
                  17.97907698338173
                ],
                [
                  -156.63936555521497,
                  71.31242746008398,
                  17.97907698338173
                ],
                [
                  -156.6528754010899,
                  71.31224595709162,
                  3.419076983381731
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2258.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2258.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:50Z",
            "pc:count": 3142502,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97025.00407,
                "count": 3142502,
                "maximum": -96779.26787,
                "minimum": -97275.16787,
                "name": "X",
                "position": 0,
                "stddev": 136.1008514,
                "variance": 18523.44175
              },
              {
                "average": 2370409.759,
                "count": 3142502,
                "maximum": 2370651.474,
                "minimum": 2370177.894,
                "name": "Y",
                "position": 1,
                "stddev": 129.0872117,
                "variance": 16663.50824
              },
              {
                "average": 5.931945437,
                "count": 3142502,
                "maximum": 17.97907698,
                "minimum": 3.419076983,
                "name": "Z",
                "position": 2,
                "stddev": 1.494477979,
                "variance": 2.233464429
              },
              {
                "average": 45379.85955,
                "count": 3142502,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8709.596317,
                "variance": 75857068.01
              },
              {
                "average": 1.000134924,
                "count": 3142502,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01293693933,
                "variance": 0.0001673643993
              },
              {
                "average": 1.000264439,
                "count": 3142502,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0190195636,
                "variance": 0.0003617437994
              },
              {
                "average": 0.4992528247,
                "count": 3142502,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995213,
                "variance": 0.2499995213
              },
              {
                "average": 0.0004273664742,
                "count": 3142502,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02066842926,
                "variance": 0.0004271839681
              },
              {
                "average": 1.331682207,
                "count": 3142502,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4726470194,
                "variance": 0.223395205
              },
              {
                "average": -0.5536808868,
                "count": 3142502,
                "maximum": 16.37400055,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.27841134,
                "variance": 105.6457396
              },
              {
                "average": 0.4597355865,
                "count": 3142502,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4983762194,
                "variance": 0.248378856
              },
              {
                "average": 409.6845221,
                "count": 3142502,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9492804195,
                "variance": 0.9011333149
              },
              {
                "average": 220417129.2,
                "count": 3142502,
                "maximum": 220417870.9,
                "minimum": 220416170.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 534.1505938,
                "variance": 285316.8569
              },
              {
                "average": 0.4597355865,
                "count": 3142502,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4983762194,
                "variance": 0.248378856
              },
              {
                "average": 0,
                "count": 3142502,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3142502,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3142502,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2174426619,
                "count": 3142502,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4125062483,
                "variance": 0.1701614049
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97275.16787,
              2370177.894,
              3.419076983,
              -96779.26787,
              2370651.474,
              17.97907698
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97275.16787465969,
                    2370177.8941278094,
                    3.419076983381731
                  ],
                  [
                    -97275.16787465969,
                    2370651.4741278095,
                    3.419076983381731
                  ],
                  [
                    -96779.2678746597,
                    2370651.4741278095,
                    17.97907698338173
                  ],
                  [
                    -96779.2678746597,
                    2370177.8941278094,
                    17.97907698338173
                  ],
                  [
                    -97275.16787465969,
                    2370177.8941278094,
                    3.419076983381731
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:50+00:00",
            "end_time": "2018-09-08T04:29:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2201.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66649566555657,
              71.30004546053756,
              3.686843306951611
            ],
            [
              -156.6670138438162,
              71.30439360291795,
              3.686843306951611
            ],
            [
              -156.65351102971292,
              71.30457603628307,
              5.306843306951611
            ],
            [
              -156.6529954693366,
              71.30022785311229,
              5.306843306951611
            ],
            [
              -156.66649566555657,
              71.30004546053756,
              3.686843306951611
            ]
          ]
        ]
      },
      "bbox": [
        -156.6670138,
        71.30004546,
        3.686843307,
        -156.6529955,
        71.30457604,
        5.306843307
      ],
      "properties": {
        "datetime": "2018-09-08T05:16:32Z",
        "pc:count": 3096563,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97578.55279,
            "count": 3096563,
            "maximum": -97331.80769,
            "minimum": -97827.62769,
            "name": "X",
            "position": 0,
            "stddev": 133.3010256,
            "variance": 17769.16342
          },
          {
            "average": 2369112.876,
            "count": 3096563,
            "maximum": 2369344.721,
            "minimum": 2368871.081,
            "name": "Y",
            "position": 1,
            "stddev": 130.939904,
            "variance": 17145.25846
          },
          {
            "average": 4.323388205,
            "count": 3096563,
            "maximum": 5.306843307,
            "minimum": 3.686843307,
            "name": "Z",
            "position": 2,
            "stddev": 0.2727902383,
            "variance": 0.07441451412
          },
          {
            "average": 38309.4252,
            "count": 3096563,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12730.7444,
            "variance": 162071853
          },
          {
            "average": 1,
            "count": 3096563,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3096563,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995955193,
            "count": 3096563,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999171,
            "variance": 0.2499999171
          },
          {
            "average": 0.0004743969362,
            "count": 3096563,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02177549166,
            "variance": 0.0004741720369
          },
          {
            "average": 1.377723947,
            "count": 3096563,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8154081878,
            "variance": 0.6648905127
          },
          {
            "average": -0.8494018233,
            "count": 3096563,
            "maximum": 16.27799988,
            "minimum": -15.94200039,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.37038928,
            "variance": 107.5449738
          },
          {
            "average": 0.4534905313,
            "count": 3096563,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978322502,
            "variance": 0.2478369494
          },
          {
            "average": 411.4222633,
            "count": 3096563,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9774765278,
            "variance": 0.9554603624
          },
          {
            "average": 220418098.7,
            "count": 3096563,
            "maximum": 220418992,
            "minimum": 220417281.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 546.3419829,
            "variance": 298489.5623
          },
          {
            "average": 0.4534905313,
            "count": 3096563,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978322502,
            "variance": 0.2478369494
          },
          {
            "average": 0,
            "count": 3096563,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3096563,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3096563,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2269638951,
            "count": 3096563,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4188691229,
            "variance": 0.1754513421
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97827.62769,
          2368871.081,
          3.686843307,
          -97331.80769,
          2369344.721,
          5.306843307
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97827.62769015858,
                2368871.081079299,
                3.686843306951611
              ],
              [
                -97827.62769015858,
                2369344.7210792988,
                3.686843306951611
              ],
              [
                -97331.80769015857,
                2369344.7210792988,
                5.306843306951611
              ],
              [
                -97331.80769015857,
                2368871.081079299,
                5.306843306951611
              ],
              [
                -97827.62769015858,
                2368871.081079299,
                3.686843306951611
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:16:32+00:00",
        "end_time": "2018-09-08T04:48:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2201.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2201.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2201.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2201.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6670138,
            71.30004546,
            3.686843307,
            -156.6529955,
            71.30457604,
            5.306843307
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66649566555657,
                  71.30004546053756,
                  3.686843306951611
                ],
                [
                  -156.6670138438162,
                  71.30439360291795,
                  3.686843306951611
                ],
                [
                  -156.65351102971292,
                  71.30457603628307,
                  5.306843306951611
                ],
                [
                  -156.6529954693366,
                  71.30022785311229,
                  5.306843306951611
                ],
                [
                  -156.66649566555657,
                  71.30004546053756,
                  3.686843306951611
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2201.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2201.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:16:32Z",
            "pc:count": 3096563,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97578.55279,
                "count": 3096563,
                "maximum": -97331.80769,
                "minimum": -97827.62769,
                "name": "X",
                "position": 0,
                "stddev": 133.3010256,
                "variance": 17769.16342
              },
              {
                "average": 2369112.876,
                "count": 3096563,
                "maximum": 2369344.721,
                "minimum": 2368871.081,
                "name": "Y",
                "position": 1,
                "stddev": 130.939904,
                "variance": 17145.25846
              },
              {
                "average": 4.323388205,
                "count": 3096563,
                "maximum": 5.306843307,
                "minimum": 3.686843307,
                "name": "Z",
                "position": 2,
                "stddev": 0.2727902383,
                "variance": 0.07441451412
              },
              {
                "average": 38309.4252,
                "count": 3096563,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12730.7444,
                "variance": 162071853
              },
              {
                "average": 1,
                "count": 3096563,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3096563,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995955193,
                "count": 3096563,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999171,
                "variance": 0.2499999171
              },
              {
                "average": 0.0004743969362,
                "count": 3096563,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02177549166,
                "variance": 0.0004741720369
              },
              {
                "average": 1.377723947,
                "count": 3096563,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8154081878,
                "variance": 0.6648905127
              },
              {
                "average": -0.8494018233,
                "count": 3096563,
                "maximum": 16.27799988,
                "minimum": -15.94200039,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.37038928,
                "variance": 107.5449738
              },
              {
                "average": 0.4534905313,
                "count": 3096563,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978322502,
                "variance": 0.2478369494
              },
              {
                "average": 411.4222633,
                "count": 3096563,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9774765278,
                "variance": 0.9554603624
              },
              {
                "average": 220418098.7,
                "count": 3096563,
                "maximum": 220418992,
                "minimum": 220417281.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 546.3419829,
                "variance": 298489.5623
              },
              {
                "average": 0.4534905313,
                "count": 3096563,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978322502,
                "variance": 0.2478369494
              },
              {
                "average": 0,
                "count": 3096563,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3096563,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3096563,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2269638951,
                "count": 3096563,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4188691229,
                "variance": 0.1754513421
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97827.62769,
              2368871.081,
              3.686843307,
              -97331.80769,
              2369344.721,
              5.306843307
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97827.62769015858,
                    2368871.081079299,
                    3.686843306951611
                  ],
                  [
                    -97827.62769015858,
                    2369344.7210792988,
                    3.686843306951611
                  ],
                  [
                    -97331.80769015857,
                    2369344.7210792988,
                    5.306843306951611
                  ],
                  [
                    -97331.80769015857,
                    2368871.081079299,
                    5.306843306951611
                  ],
                  [
                    -97827.62769015858,
                    2368871.081079299,
                    3.686843306951611
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:16:32+00:00",
            "end_time": "2018-09-08T04:48:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2226.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6023580455346,
              71.30368017017396,
              2.745431283889227
            ],
            [
              -156.6028638271959,
              71.30802840257088,
              2.745431283889227
            ],
            [
              -156.58935503655817,
              71.30820648623855,
              6.505431283889227
            ],
            [
              -156.58885187455434,
              71.30385821401464,
              6.505431283889227
            ],
            [
              -156.6023580455346,
              71.30368017017396,
              2.745431283889227
            ]
          ]
        ]
      },
      "bbox": [
        -156.6028638,
        71.30368017,
        2.745431284,
        -156.5888519,
        71.30820649,
        6.505431284
      ],
      "properties": {
        "datetime": "2018-09-11T17:40:53Z",
        "pc:count": 4101740,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95205.63108,
            "count": 4101740,
            "maximum": -94964.34628,
            "minimum": -95460.28628,
            "name": "X",
            "position": 0,
            "stddev": 133.8590985,
            "variance": 17918.25826
          },
          {
            "average": 2369409.267,
            "count": 4101740,
            "maximum": 2369646.662,
            "minimum": 2369173.042,
            "name": "Y",
            "position": 1,
            "stddev": 127.3566266,
            "variance": 16219.71033
          },
          {
            "average": 4.082907587,
            "count": 4101740,
            "maximum": 6.505431284,
            "minimum": 2.745431284,
            "name": "Z",
            "position": 2,
            "stddev": 1.020107032,
            "variance": 1.040618356
          },
          {
            "average": 41086.30423,
            "count": 4101740,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11643.92088,
            "variance": 135580893.5
          },
          {
            "average": 1.000000731,
            "count": 4101740,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008552172605,
            "variance": 7.313965627e-07
          },
          {
            "average": 1.000001463,
            "count": 4101740,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001209459406,
            "variance": 1.462792056e-06
          },
          {
            "average": 0.5073390805,
            "count": 4101740,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999461959,
            "variance": 0.2499461988
          },
          {
            "average": 0.0004051938933,
            "count": 4101740,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02012535242,
            "variance": 0.00040502981
          },
          {
            "average": 1.243927455,
            "count": 4101740,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4295318364,
            "variance": 0.1844975985
          },
          {
            "average": -2.565508808,
            "count": 4101740,
            "maximum": 16.36199951,
            "minimum": -19.4640007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39186109,
            "variance": 107.9907769
          },
          {
            "average": 0.4957630176,
            "count": 4101740,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999821086,
            "variance": 0.2499821089
          },
          {
            "average": 423.106792,
            "count": 4101740,
            "maximum": 455,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.14406444,
            "variance": 260.6308165
          },
          {
            "average": 220483513,
            "count": 4101740,
            "maximum": 220722853.9,
            "minimum": 220418949.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 123305.5772,
            "variance": 15204265360.0
          },
          {
            "average": 0.4957630176,
            "count": 4101740,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999821086,
            "variance": 0.2499821089
          },
          {
            "average": 0,
            "count": 4101740,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4101740,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4101740,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2059060301,
            "count": 4101740,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4043621851,
            "variance": 0.1635087767
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95460.28628,
          2369173.042,
          2.745431284,
          -94964.34628,
          2369646.662,
          6.505431284
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95460.2862782414,
                2369173.0424104105,
                2.745431283889227
              ],
              [
                -95460.2862782414,
                2369646.6624104106,
                2.745431283889227
              ],
              [
                -94964.3462782414,
                2369646.6624104106,
                6.505431283889227
              ],
              [
                -94964.3462782414,
                2369173.0424104105,
                6.505431283889227
              ],
              [
                -95460.2862782414,
                2369173.0424104105,
                2.745431283889227
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:40:53+00:00",
        "end_time": "2018-09-08T05:15:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2226.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2226.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2226.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2226.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6028638,
            71.30368017,
            2.745431284,
            -156.5888519,
            71.30820649,
            6.505431284
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6023580455346,
                  71.30368017017396,
                  2.745431283889227
                ],
                [
                  -156.6028638271959,
                  71.30802840257088,
                  2.745431283889227
                ],
                [
                  -156.58935503655817,
                  71.30820648623855,
                  6.505431283889227
                ],
                [
                  -156.58885187455434,
                  71.30385821401464,
                  6.505431283889227
                ],
                [
                  -156.6023580455346,
                  71.30368017017396,
                  2.745431283889227
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2226.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2226.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:40:53Z",
            "pc:count": 4101740,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95205.63108,
                "count": 4101740,
                "maximum": -94964.34628,
                "minimum": -95460.28628,
                "name": "X",
                "position": 0,
                "stddev": 133.8590985,
                "variance": 17918.25826
              },
              {
                "average": 2369409.267,
                "count": 4101740,
                "maximum": 2369646.662,
                "minimum": 2369173.042,
                "name": "Y",
                "position": 1,
                "stddev": 127.3566266,
                "variance": 16219.71033
              },
              {
                "average": 4.082907587,
                "count": 4101740,
                "maximum": 6.505431284,
                "minimum": 2.745431284,
                "name": "Z",
                "position": 2,
                "stddev": 1.020107032,
                "variance": 1.040618356
              },
              {
                "average": 41086.30423,
                "count": 4101740,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11643.92088,
                "variance": 135580893.5
              },
              {
                "average": 1.000000731,
                "count": 4101740,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008552172605,
                "variance": 7.313965627e-07
              },
              {
                "average": 1.000001463,
                "count": 4101740,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001209459406,
                "variance": 1.462792056e-06
              },
              {
                "average": 0.5073390805,
                "count": 4101740,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999461959,
                "variance": 0.2499461988
              },
              {
                "average": 0.0004051938933,
                "count": 4101740,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02012535242,
                "variance": 0.00040502981
              },
              {
                "average": 1.243927455,
                "count": 4101740,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4295318364,
                "variance": 0.1844975985
              },
              {
                "average": -2.565508808,
                "count": 4101740,
                "maximum": 16.36199951,
                "minimum": -19.4640007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39186109,
                "variance": 107.9907769
              },
              {
                "average": 0.4957630176,
                "count": 4101740,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999821086,
                "variance": 0.2499821089
              },
              {
                "average": 423.106792,
                "count": 4101740,
                "maximum": 455,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.14406444,
                "variance": 260.6308165
              },
              {
                "average": 220483513,
                "count": 4101740,
                "maximum": 220722853.9,
                "minimum": 220418949.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 123305.5772,
                "variance": 15204265360.0
              },
              {
                "average": 0.4957630176,
                "count": 4101740,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999821086,
                "variance": 0.2499821089
              },
              {
                "average": 0,
                "count": 4101740,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4101740,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4101740,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2059060301,
                "count": 4101740,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4043621851,
                "variance": 0.1635087767
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95460.28628,
              2369173.042,
              2.745431284,
              -94964.34628,
              2369646.662,
              6.505431284
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95460.2862782414,
                    2369173.0424104105,
                    2.745431283889227
                  ],
                  [
                    -95460.2862782414,
                    2369646.6624104106,
                    2.745431283889227
                  ],
                  [
                    -94964.3462782414,
                    2369646.6624104106,
                    6.505431283889227
                  ],
                  [
                    -94964.3462782414,
                    2369173.0424104105,
                    6.505431283889227
                  ],
                  [
                    -95460.2862782414,
                    2369173.0424104105,
                    2.745431283889227
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:40:53+00:00",
            "end_time": "2018-09-08T05:15:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2178.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6795485582739,
              71.29603911287647,
              -16.50377581899494
            ],
            [
              -156.68006849691773,
              71.30038141141262,
              -16.50377581899494
            ],
            [
              -156.6665660304307,
              71.30056476416362,
              16.53622418100506
            ],
            [
              -156.6660487056463,
              71.29622242469608,
              16.53622418100506
            ],
            [
              -156.6795485582739,
              71.29603911287647,
              -16.50377581899494
            ]
          ]
        ]
      },
      "bbox": [
        -156.6800685,
        71.29603911,
        -16.50377582,
        -156.6660487,
        71.30056476,
        16.53622418
      ],
      "properties": {
        "datetime": "2018-09-08T05:16:43Z",
        "pc:count": 2867154,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98069.70372,
            "count": 2867154,
            "maximum": -97827.93892,
            "minimum": -98323.83892,
            "name": "X",
            "position": 0,
            "stddev": 133.1509296,
            "variance": 17729.17005
          },
          {
            "average": 2368682.425,
            "count": 2867154,
            "maximum": 2368927.662,
            "minimum": 2368454.642,
            "name": "Y",
            "position": 1,
            "stddev": 128.0178149,
            "variance": 16388.56094
          },
          {
            "average": 4.153103487,
            "count": 2867154,
            "maximum": 16.53622418,
            "minimum": -16.50377582,
            "name": "Z",
            "position": 2,
            "stddev": 1.122786015,
            "variance": 1.260648436
          },
          {
            "average": 41879.6657,
            "count": 2867154,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10146.94792,
            "variance": 102960552
          },
          {
            "average": 1.002617578,
            "count": 2867154,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05155059378,
            "variance": 0.002657463719
          },
          {
            "average": 1.0052369,
            "count": 2867154,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07314154693,
            "variance": 0.005349685887
          },
          {
            "average": 0.498815899,
            "count": 2867154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999986851,
            "variance": 0.2499986851
          },
          {
            "average": 0.0004868939722,
            "count": 2867154,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02206030544,
            "variance": 0.0004866570762
          },
          {
            "average": 1.422859044,
            "count": 2867154,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.06095176,
            "variance": 1.125618636
          },
          {
            "average": -0.5935204321,
            "count": 2867154,
            "maximum": 16.26000023,
            "minimum": -15.97799969,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.27659193,
            "variance": 105.6083416
          },
          {
            "average": 0.4529334664,
            "count": 2867154,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.497779899,
            "variance": 0.2477848278
          },
          {
            "average": 411.5254479,
            "count": 2867154,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9645230128,
            "variance": 0.9303046423
          },
          {
            "average": 220418158,
            "count": 2867154,
            "maximum": 220419003.4,
            "minimum": 220417271.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.6699137,
            "variance": 292323.9556
          },
          {
            "average": 0.4529334664,
            "count": 2867154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.497779899,
            "variance": 0.2477848278
          },
          {
            "average": 0,
            "count": 2867154,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2867154,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2867154,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2222388473,
            "count": 2867154,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4157508898,
            "variance": 0.1728488023
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98323.83892,
          2368454.642,
          -16.50377582,
          -97827.93892,
          2368927.662,
          16.53622418
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98323.83892237564,
                2368454.6416751062,
                -16.50377581899494
              ],
              [
                -98323.83892237564,
                2368927.661675106,
                -16.50377581899494
              ],
              [
                -97827.93892237564,
                2368927.661675106,
                16.53622418100506
              ],
              [
                -97827.93892237564,
                2368454.6416751062,
                16.53622418100506
              ],
              [
                -98323.83892237564,
                2368454.6416751062,
                -16.50377581899494
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:16:43+00:00",
        "end_time": "2018-09-08T04:47:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2178.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2178.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2178.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2178.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6800685,
            71.29603911,
            -16.50377582,
            -156.6660487,
            71.30056476,
            16.53622418
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6795485582739,
                  71.29603911287647,
                  -16.50377581899494
                ],
                [
                  -156.68006849691773,
                  71.30038141141262,
                  -16.50377581899494
                ],
                [
                  -156.6665660304307,
                  71.30056476416362,
                  16.53622418100506
                ],
                [
                  -156.6660487056463,
                  71.29622242469608,
                  16.53622418100506
                ],
                [
                  -156.6795485582739,
                  71.29603911287647,
                  -16.50377581899494
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2178.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2178.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:16:43Z",
            "pc:count": 2867154,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98069.70372,
                "count": 2867154,
                "maximum": -97827.93892,
                "minimum": -98323.83892,
                "name": "X",
                "position": 0,
                "stddev": 133.1509296,
                "variance": 17729.17005
              },
              {
                "average": 2368682.425,
                "count": 2867154,
                "maximum": 2368927.662,
                "minimum": 2368454.642,
                "name": "Y",
                "position": 1,
                "stddev": 128.0178149,
                "variance": 16388.56094
              },
              {
                "average": 4.153103487,
                "count": 2867154,
                "maximum": 16.53622418,
                "minimum": -16.50377582,
                "name": "Z",
                "position": 2,
                "stddev": 1.122786015,
                "variance": 1.260648436
              },
              {
                "average": 41879.6657,
                "count": 2867154,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10146.94792,
                "variance": 102960552
              },
              {
                "average": 1.002617578,
                "count": 2867154,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05155059378,
                "variance": 0.002657463719
              },
              {
                "average": 1.0052369,
                "count": 2867154,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07314154693,
                "variance": 0.005349685887
              },
              {
                "average": 0.498815899,
                "count": 2867154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999986851,
                "variance": 0.2499986851
              },
              {
                "average": 0.0004868939722,
                "count": 2867154,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02206030544,
                "variance": 0.0004866570762
              },
              {
                "average": 1.422859044,
                "count": 2867154,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.06095176,
                "variance": 1.125618636
              },
              {
                "average": -0.5935204321,
                "count": 2867154,
                "maximum": 16.26000023,
                "minimum": -15.97799969,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.27659193,
                "variance": 105.6083416
              },
              {
                "average": 0.4529334664,
                "count": 2867154,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.497779899,
                "variance": 0.2477848278
              },
              {
                "average": 411.5254479,
                "count": 2867154,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9645230128,
                "variance": 0.9303046423
              },
              {
                "average": 220418158,
                "count": 2867154,
                "maximum": 220419003.4,
                "minimum": 220417271.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.6699137,
                "variance": 292323.9556
              },
              {
                "average": 0.4529334664,
                "count": 2867154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.497779899,
                "variance": 0.2477848278
              },
              {
                "average": 0,
                "count": 2867154,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2867154,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2867154,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2222388473,
                "count": 2867154,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4157508898,
                "variance": 0.1728488023
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98323.83892,
              2368454.642,
              -16.50377582,
              -97827.93892,
              2368927.662,
              16.53622418
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98323.83892237564,
                    2368454.6416751062,
                    -16.50377581899494
                  ],
                  [
                    -98323.83892237564,
                    2368927.661675106,
                    -16.50377581899494
                  ],
                  [
                    -97827.93892237564,
                    2368927.661675106,
                    16.53622418100506
                  ],
                  [
                    -97827.93892237564,
                    2368454.6416751062,
                    16.53622418100506
                  ],
                  [
                    -98323.83892237564,
                    2368454.6416751062,
                    -16.50377581899494
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:16:43+00:00",
            "end_time": "2018-09-08T04:47:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2170.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78168555533853,
              71.29672709337152,
              -11.073991352539732
            ],
            [
              -156.78222586564246,
              71.30107354348509,
              -11.073991352539732
            ],
            [
              -156.76872982225882,
              71.30126381548632,
              52.38600864746027
            ],
            [
              -156.76819212680655,
              71.2969173228544,
              52.38600864746027
            ],
            [
              -156.78168555533853,
              71.29672709337152,
              -11.073991352539732
            ]
          ]
        ]
      },
      "bbox": [
        -156.7822259,
        71.29672709,
        -11.07399135,
        -156.7681921,
        71.30126382,
        52.38600865
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:40Z",
        "pc:count": 2586405,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101794.397,
            "count": 2586405,
            "maximum": -101570.7049,
            "minimum": -102066.3849,
            "name": "X",
            "position": 0,
            "stddev": 130.3875777,
            "variance": 17000.92043
          },
          {
            "average": 2368896.361,
            "count": 2586405,
            "maximum": 2369157.057,
            "minimum": 2368683.557,
            "name": "Y",
            "position": 1,
            "stddev": 124.6589024,
            "variance": 15539.84195
          },
          {
            "average": 3.297762046,
            "count": 2586405,
            "maximum": 52.38600865,
            "minimum": -11.07399135,
            "name": "Z",
            "position": 2,
            "stddev": 2.81914195,
            "variance": 7.947561335
          },
          {
            "average": 21653.96284,
            "count": 2586405,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11792.38546,
            "variance": 139060354.8
          },
          {
            "average": 1.012182933,
            "count": 2586405,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1138493313,
            "variance": 0.01296167024
          },
          {
            "average": 1.024365094,
            "count": 2586405,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1629482733,
            "variance": 0.02655213978
          },
          {
            "average": 0.5063232556,
            "count": 2586405,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999601115,
            "variance": 0.2499601131
          },
          {
            "average": 0.0003862504132,
            "count": 2586405,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01964946241,
            "variance": 0.0003861013731
          },
          {
            "average": 4.222900126,
            "count": 2586405,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.51177092,
            "variance": 12.332535
          },
          {
            "average": -1.847573709,
            "count": 2586405,
            "maximum": 16.38599968,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.329744621,
            "variance": 87.04413469
          },
          {
            "average": 0.4835101231,
            "count": 2586405,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997281066,
            "variance": 0.2497281805
          },
          {
            "average": 404.7310499,
            "count": 2586405,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8073873815,
            "variance": 0.6518743838
          },
          {
            "average": 220414305.9,
            "count": 2586405,
            "maximum": 220414980.2,
            "minimum": 220413435,
            "name": "GpsTime",
            "position": 12,
            "stddev": 470.0630371,
            "variance": 220959.2588
          },
          {
            "average": 0.4835101231,
            "count": 2586405,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997281066,
            "variance": 0.2497281805
          },
          {
            "average": 0,
            "count": 2586405,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2586405,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2586405,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1445570203,
            "count": 2586405,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.351653716,
            "variance": 0.123660336
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102066.3849,
          2368683.557,
          -11.07399135,
          -101570.7049,
          2369157.057,
          52.38600865
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102066.38494249962,
                2368683.557444361,
                -11.073991352539732
              ],
              [
                -102066.38494249962,
                2369157.057444361,
                -11.073991352539732
              ],
              [
                -101570.70494249962,
                2369157.057444361,
                52.38600864746027
              ],
              [
                -101570.70494249962,
                2368683.557444361,
                52.38600864746027
              ],
              [
                -102066.38494249962,
                2368683.557444361,
                -11.073991352539732
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:40+00:00",
        "end_time": "2018-09-08T03:43:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2170.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2170.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2170.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2170.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7822259,
            71.29672709,
            -11.07399135,
            -156.7681921,
            71.30126382,
            52.38600865
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78168555533853,
                  71.29672709337152,
                  -11.073991352539732
                ],
                [
                  -156.78222586564246,
                  71.30107354348509,
                  -11.073991352539732
                ],
                [
                  -156.76872982225882,
                  71.30126381548632,
                  52.38600864746027
                ],
                [
                  -156.76819212680655,
                  71.2969173228544,
                  52.38600864746027
                ],
                [
                  -156.78168555533853,
                  71.29672709337152,
                  -11.073991352539732
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2170.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2170.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:40Z",
            "pc:count": 2586405,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101794.397,
                "count": 2586405,
                "maximum": -101570.7049,
                "minimum": -102066.3849,
                "name": "X",
                "position": 0,
                "stddev": 130.3875777,
                "variance": 17000.92043
              },
              {
                "average": 2368896.361,
                "count": 2586405,
                "maximum": 2369157.057,
                "minimum": 2368683.557,
                "name": "Y",
                "position": 1,
                "stddev": 124.6589024,
                "variance": 15539.84195
              },
              {
                "average": 3.297762046,
                "count": 2586405,
                "maximum": 52.38600865,
                "minimum": -11.07399135,
                "name": "Z",
                "position": 2,
                "stddev": 2.81914195,
                "variance": 7.947561335
              },
              {
                "average": 21653.96284,
                "count": 2586405,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11792.38546,
                "variance": 139060354.8
              },
              {
                "average": 1.012182933,
                "count": 2586405,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1138493313,
                "variance": 0.01296167024
              },
              {
                "average": 1.024365094,
                "count": 2586405,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1629482733,
                "variance": 0.02655213978
              },
              {
                "average": 0.5063232556,
                "count": 2586405,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999601115,
                "variance": 0.2499601131
              },
              {
                "average": 0.0003862504132,
                "count": 2586405,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01964946241,
                "variance": 0.0003861013731
              },
              {
                "average": 4.222900126,
                "count": 2586405,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.51177092,
                "variance": 12.332535
              },
              {
                "average": -1.847573709,
                "count": 2586405,
                "maximum": 16.38599968,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.329744621,
                "variance": 87.04413469
              },
              {
                "average": 0.4835101231,
                "count": 2586405,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997281066,
                "variance": 0.2497281805
              },
              {
                "average": 404.7310499,
                "count": 2586405,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8073873815,
                "variance": 0.6518743838
              },
              {
                "average": 220414305.9,
                "count": 2586405,
                "maximum": 220414980.2,
                "minimum": 220413435,
                "name": "GpsTime",
                "position": 12,
                "stddev": 470.0630371,
                "variance": 220959.2588
              },
              {
                "average": 0.4835101231,
                "count": 2586405,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997281066,
                "variance": 0.2497281805
              },
              {
                "average": 0,
                "count": 2586405,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2586405,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2586405,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1445570203,
                "count": 2586405,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.351653716,
                "variance": 0.123660336
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102066.3849,
              2368683.557,
              -11.07399135,
              -101570.7049,
              2369157.057,
              52.38600865
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102066.38494249962,
                    2368683.557444361,
                    -11.073991352539732
                  ],
                  [
                    -102066.38494249962,
                    2369157.057444361,
                    -11.073991352539732
                  ],
                  [
                    -101570.70494249962,
                    2369157.057444361,
                    52.38600864746027
                  ],
                  [
                    -101570.70494249962,
                    2368683.557444361,
                    52.38600864746027
                  ],
                  [
                    -102066.38494249962,
                    2368683.557444361,
                    -11.073991352539732
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:40+00:00",
            "end_time": "2018-09-08T03:43:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2297.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71379601401927,
              71.32501207362498,
              0.84482226422156
            ],
            [
              -156.71414002342667,
              71.32784585506224,
              0.84482226422156
            ],
            [
              -156.70301097858024,
              71.32799881475849,
              1.44482226422156
            ],
            [
              -156.70266837662425,
              71.32516501100008,
              1.44482226422156
            ],
            [
              -156.71379601401927,
              71.32501207362498,
              0.84482226422156
            ]
          ]
        ]
      },
      "bbox": [
        -156.71414,
        71.32501207,
        0.8448222642,
        -156.7026684,
        71.32799881,
        1.444822264
      ],
      "properties": {
        "datetime": "2018-09-08T03:51:53Z",
        "pc:count": 519710,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99191.68187,
            "count": 519710,
            "maximum": -99042.76745,
            "minimum": -99451.00745,
            "name": "X",
            "position": 0,
            "stddev": 96.72122844,
            "variance": 9354.996031
          },
          {
            "average": 2371766.256,
            "count": 519710,
            "maximum": 2371964.96,
            "minimum": 2371656.32,
            "name": "Y",
            "position": 1,
            "stddev": 70.32624628,
            "variance": 4945.780916
          },
          {
            "average": 1.150130282,
            "count": 519710,
            "maximum": 1.444822264,
            "minimum": 0.8448222642,
            "name": "Z",
            "position": 2,
            "stddev": 0.06463551012,
            "variance": 0.004177749168
          },
          {
            "average": 12790.98456,
            "count": 519710,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9583.723438,
            "variance": 91847754.94
          },
          {
            "average": 1,
            "count": 519710,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 519710,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4958938639,
            "count": 519710,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999836204,
            "variance": 0.2499836207
          },
          {
            "average": 0.0005137480518,
            "count": 519710,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02266020968,
            "variance": 0.0005134851028
          },
          {
            "average": 7.355613708,
            "count": 519710,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.755354983,
            "variance": 7.591981084
          },
          {
            "average": 1.64516966,
            "count": 519710,
            "maximum": 15.02999973,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.196659221,
            "variance": 67.18522238
          },
          {
            "average": 0.4922803102,
            "count": 519710,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999408838,
            "variance": 0.2499408873
          },
          {
            "average": 403.1283677,
            "count": 519710,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6919167778,
            "variance": 0.4787488274
          },
          {
            "average": 220413438.5,
            "count": 519710,
            "maximum": 220413913.6,
            "minimum": 220412813,
            "name": "GpsTime",
            "position": 12,
            "stddev": 377.0194695,
            "variance": 142143.6804
          },
          {
            "average": 0.4922803102,
            "count": 519710,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999408838,
            "variance": 0.2499408873
          },
          {
            "average": 0,
            "count": 519710,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 519710,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 519710,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03196013161,
            "count": 519710,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1758941191,
            "variance": 0.03093874113
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99451.00745,
          2371656.32,
          0.8448222642,
          -99042.76745,
          2371964.96,
          1.444822264
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99451.00744650204,
                2371656.3198027867,
                0.84482226422156
              ],
              [
                -99451.00744650204,
                2371964.9598027864,
                0.84482226422156
              ],
              [
                -99042.76744650205,
                2371964.9598027864,
                1.44482226422156
              ],
              [
                -99042.76744650205,
                2371656.3198027867,
                1.44482226422156
              ],
              [
                -99451.00744650204,
                2371656.3198027867,
                0.84482226422156
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:51:53+00:00",
        "end_time": "2018-09-08T03:33:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2297.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2297.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2297.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2297.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.71414,
            71.32501207,
            0.8448222642,
            -156.7026684,
            71.32799881,
            1.444822264
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71379601401927,
                  71.32501207362498,
                  0.84482226422156
                ],
                [
                  -156.71414002342667,
                  71.32784585506224,
                  0.84482226422156
                ],
                [
                  -156.70301097858024,
                  71.32799881475849,
                  1.44482226422156
                ],
                [
                  -156.70266837662425,
                  71.32516501100008,
                  1.44482226422156
                ],
                [
                  -156.71379601401927,
                  71.32501207362498,
                  0.84482226422156
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2297.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2297.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:51:53Z",
            "pc:count": 519710,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99191.68187,
                "count": 519710,
                "maximum": -99042.76745,
                "minimum": -99451.00745,
                "name": "X",
                "position": 0,
                "stddev": 96.72122844,
                "variance": 9354.996031
              },
              {
                "average": 2371766.256,
                "count": 519710,
                "maximum": 2371964.96,
                "minimum": 2371656.32,
                "name": "Y",
                "position": 1,
                "stddev": 70.32624628,
                "variance": 4945.780916
              },
              {
                "average": 1.150130282,
                "count": 519710,
                "maximum": 1.444822264,
                "minimum": 0.8448222642,
                "name": "Z",
                "position": 2,
                "stddev": 0.06463551012,
                "variance": 0.004177749168
              },
              {
                "average": 12790.98456,
                "count": 519710,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9583.723438,
                "variance": 91847754.94
              },
              {
                "average": 1,
                "count": 519710,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 519710,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4958938639,
                "count": 519710,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999836204,
                "variance": 0.2499836207
              },
              {
                "average": 0.0005137480518,
                "count": 519710,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02266020968,
                "variance": 0.0005134851028
              },
              {
                "average": 7.355613708,
                "count": 519710,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.755354983,
                "variance": 7.591981084
              },
              {
                "average": 1.64516966,
                "count": 519710,
                "maximum": 15.02999973,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.196659221,
                "variance": 67.18522238
              },
              {
                "average": 0.4922803102,
                "count": 519710,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999408838,
                "variance": 0.2499408873
              },
              {
                "average": 403.1283677,
                "count": 519710,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6919167778,
                "variance": 0.4787488274
              },
              {
                "average": 220413438.5,
                "count": 519710,
                "maximum": 220413913.6,
                "minimum": 220412813,
                "name": "GpsTime",
                "position": 12,
                "stddev": 377.0194695,
                "variance": 142143.6804
              },
              {
                "average": 0.4922803102,
                "count": 519710,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999408838,
                "variance": 0.2499408873
              },
              {
                "average": 0,
                "count": 519710,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 519710,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 519710,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03196013161,
                "count": 519710,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1758941191,
                "variance": 0.03093874113
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99451.00745,
              2371656.32,
              0.8448222642,
              -99042.76745,
              2371964.96,
              1.444822264
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99451.00744650204,
                    2371656.3198027867,
                    0.84482226422156
                  ],
                  [
                    -99451.00744650204,
                    2371964.9598027864,
                    0.84482226422156
                  ],
                  [
                    -99042.76744650205,
                    2371964.9598027864,
                    1.44482226422156
                  ],
                  [
                    -99042.76744650205,
                    2371656.3198027867,
                    1.44482226422156
                  ],
                  [
                    -99451.00744650204,
                    2371656.3198027867,
                    0.84482226422156
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:51:53+00:00",
            "end_time": "2018-09-08T03:33:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2009.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.8212357163698,
              71.2764853142843,
              -5.737667348790161
            ],
            [
              -156.8217833480179,
              71.28083216301737,
              -5.737667348790161
            ],
            [
              -156.808299832736,
              71.28102511932597,
              22.04233265120984
            ],
            [
              -156.80775481161749,
              71.27667822752116,
              22.04233265120984
            ],
            [
              -156.8212357163698,
              71.2764853142843,
              -5.737667348790161
            ]
          ]
        ]
      },
      "bbox": [
        -156.8217833,
        71.27648531,
        -5.737667349,
        -156.8077548,
        71.28102512,
        22.04233265
      ],
      "properties": {
        "datetime": "2018-09-08T04:27:41Z",
        "pc:count": 2566428,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -103371.4247,
            "count": 2566428,
            "maximum": -103114.598,
            "minimum": -103610.278,
            "name": "X",
            "position": 0,
            "stddev": 132.5009709,
            "variance": 17556.50729
          },
          {
            "average": 2366779.185,
            "count": 2566428,
            "maximum": 2367017.004,
            "minimum": 2366543.384,
            "name": "Y",
            "position": 1,
            "stddev": 137.4155804,
            "variance": 18883.04173
          },
          {
            "average": 5.046983879,
            "count": 2566428,
            "maximum": 22.04233265,
            "minimum": -5.737667349,
            "name": "Z",
            "position": 2,
            "stddev": 3.512048572,
            "variance": 12.33448517
          },
          {
            "average": 24971.10753,
            "count": 2566428,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9773.146902,
            "variance": 95514400.37
          },
          {
            "average": 1.000293014,
            "count": 2566428,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01727378277,
            "variance": 0.0002983835711
          },
          {
            "average": 1.000586808,
            "count": 2566428,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02455257343,
            "variance": 0.0006028288619
          },
          {
            "average": 0.503757752,
            "count": 2566428,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999859765,
            "variance": 0.2499859767
          },
          {
            "average": 0.0004523797278,
            "count": 2566428,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02126441291,
            "variance": 0.0004521752565
          },
          {
            "average": 1.882790789,
            "count": 2566428,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.220234178,
            "variance": 4.929439807
          },
          {
            "average": 0.335182926,
            "count": 2566428,
            "maximum": 16.47599983,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.30437055,
            "variance": 106.1800525
          },
          {
            "average": 0.5447848138,
            "count": 2566428,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979903785,
            "variance": 0.2479944171
          },
          {
            "average": 406.53783,
            "count": 2566428,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9410583445,
            "variance": 0.8855908077
          },
          {
            "average": 220415339.7,
            "count": 2566428,
            "maximum": 220416061.1,
            "minimum": 220414586,
            "name": "GpsTime",
            "position": 12,
            "stddev": 526.0842789,
            "variance": 276764.6685
          },
          {
            "average": 0.5447848138,
            "count": 2566428,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979903785,
            "variance": 0.2479944171
          },
          {
            "average": 0,
            "count": 2566428,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2566428,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2566428,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2409718878,
            "count": 2566428,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4276733664,
            "variance": 0.1829045083
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -103610.278,
          2366543.384,
          -5.737667349,
          -103114.598,
          2367017.004,
          22.04233265
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -103610.27800377735,
                2366543.3841956486,
                -5.737667348790161
              ],
              [
                -103610.27800377735,
                2367017.0041956487,
                -5.737667348790161
              ],
              [
                -103114.59800377736,
                2367017.0041956487,
                22.04233265120984
              ],
              [
                -103114.59800377736,
                2366543.3841956486,
                22.04233265120984
              ],
              [
                -103610.27800377735,
                2366543.3841956486,
                -5.737667348790161
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:27:41+00:00",
        "end_time": "2018-09-08T04:03:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2009.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2009.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2009.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2009.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.8217833,
            71.27648531,
            -5.737667349,
            -156.8077548,
            71.28102512,
            22.04233265
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.8212357163698,
                  71.2764853142843,
                  -5.737667348790161
                ],
                [
                  -156.8217833480179,
                  71.28083216301737,
                  -5.737667348790161
                ],
                [
                  -156.808299832736,
                  71.28102511932597,
                  22.04233265120984
                ],
                [
                  -156.80775481161749,
                  71.27667822752116,
                  22.04233265120984
                ],
                [
                  -156.8212357163698,
                  71.2764853142843,
                  -5.737667348790161
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2009.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2009.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:27:41Z",
            "pc:count": 2566428,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -103371.4247,
                "count": 2566428,
                "maximum": -103114.598,
                "minimum": -103610.278,
                "name": "X",
                "position": 0,
                "stddev": 132.5009709,
                "variance": 17556.50729
              },
              {
                "average": 2366779.185,
                "count": 2566428,
                "maximum": 2367017.004,
                "minimum": 2366543.384,
                "name": "Y",
                "position": 1,
                "stddev": 137.4155804,
                "variance": 18883.04173
              },
              {
                "average": 5.046983879,
                "count": 2566428,
                "maximum": 22.04233265,
                "minimum": -5.737667349,
                "name": "Z",
                "position": 2,
                "stddev": 3.512048572,
                "variance": 12.33448517
              },
              {
                "average": 24971.10753,
                "count": 2566428,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9773.146902,
                "variance": 95514400.37
              },
              {
                "average": 1.000293014,
                "count": 2566428,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01727378277,
                "variance": 0.0002983835711
              },
              {
                "average": 1.000586808,
                "count": 2566428,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02455257343,
                "variance": 0.0006028288619
              },
              {
                "average": 0.503757752,
                "count": 2566428,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999859765,
                "variance": 0.2499859767
              },
              {
                "average": 0.0004523797278,
                "count": 2566428,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02126441291,
                "variance": 0.0004521752565
              },
              {
                "average": 1.882790789,
                "count": 2566428,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.220234178,
                "variance": 4.929439807
              },
              {
                "average": 0.335182926,
                "count": 2566428,
                "maximum": 16.47599983,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.30437055,
                "variance": 106.1800525
              },
              {
                "average": 0.5447848138,
                "count": 2566428,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979903785,
                "variance": 0.2479944171
              },
              {
                "average": 406.53783,
                "count": 2566428,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9410583445,
                "variance": 0.8855908077
              },
              {
                "average": 220415339.7,
                "count": 2566428,
                "maximum": 220416061.1,
                "minimum": 220414586,
                "name": "GpsTime",
                "position": 12,
                "stddev": 526.0842789,
                "variance": 276764.6685
              },
              {
                "average": 0.5447848138,
                "count": 2566428,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979903785,
                "variance": 0.2479944171
              },
              {
                "average": 0,
                "count": 2566428,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2566428,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2566428,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2409718878,
                "count": 2566428,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4276733664,
                "variance": 0.1829045083
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -103610.278,
              2366543.384,
              -5.737667349,
              -103114.598,
              2367017.004,
              22.04233265
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -103610.27800377735,
                    2366543.3841956486,
                    -5.737667348790161
                  ],
                  [
                    -103610.27800377735,
                    2367017.0041956487,
                    -5.737667348790161
                  ],
                  [
                    -103114.59800377736,
                    2367017.0041956487,
                    22.04233265120984
                  ],
                  [
                    -103114.59800377736,
                    2366543.3841956486,
                    22.04233265120984
                  ],
                  [
                    -103610.27800377735,
                    2366543.3841956486,
                    -5.737667348790161
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:27:41+00:00",
            "end_time": "2018-09-08T04:03:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2047.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7827152897615,
              71.28033917823014,
              1.403120842238316
            ],
            [
              -156.7832554958805,
              71.28468587912838,
              1.403120842238316
            ],
            [
              -156.76976606758495,
              71.28487624691812,
              34.42312084223832
            ],
            [
              -156.7692284735607,
              71.28052950351791,
              34.42312084223832
            ],
            [
              -156.7827152897615,
              71.28033917823014,
              1.403120842238316
            ]
          ]
        ]
      },
      "bbox": [
        -156.7832555,
        71.28033918,
        1.403120842,
        -156.7692285,
        71.28487625,
        34.42312084
      ],
      "properties": {
        "datetime": "2018-09-08T04:46:54Z",
        "pc:count": 2933327,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101919.3625,
            "count": 2933327,
            "maximum": -101683.07,
            "minimum": -102178.87,
            "name": "X",
            "position": 0,
            "stddev": 134.483446,
            "variance": 18085.79726
          },
          {
            "average": 2367143.417,
            "count": 2933327,
            "maximum": 2367376.436,
            "minimum": 2366902.856,
            "name": "Y",
            "position": 1,
            "stddev": 128.6232849,
            "variance": 16543.94943
          },
          {
            "average": 12.36781486,
            "count": 2933327,
            "maximum": 34.42312084,
            "minimum": 1.403120842,
            "name": "Z",
            "position": 2,
            "stddev": 0.8495175349,
            "variance": 0.721680042
          },
          {
            "average": 30117.15379,
            "count": 2933327,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12134.05836,
            "variance": 147235372.2
          },
          {
            "average": 1.000980116,
            "count": 2933327,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03279164624,
            "variance": 0.001075292063
          },
          {
            "average": 1.001963982,
            "count": 2933327,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04741871751,
            "variance": 0.00224853477
          },
          {
            "average": 0.5018168789,
            "count": 2933327,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999967842,
            "variance": 0.2499967842
          },
          {
            "average": 0.0004455691438,
            "count": 2933327,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02110380923,
            "variance": 0.0004453707638
          },
          {
            "average": 1.321632399,
            "count": 2933327,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5235629548,
            "variance": 0.2741181677
          },
          {
            "average": 1.404486059,
            "count": 2933327,
            "maximum": 16.36800003,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63676979,
            "variance": 113.1408715
          },
          {
            "average": 0.5254835209,
            "count": 2933327,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499350253,
            "variance": 0.2493506752
          },
          {
            "average": 408.2306978,
            "count": 2933327,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9747826713,
            "variance": 0.9502012562
          },
          {
            "average": 220416325.7,
            "count": 2933327,
            "maximum": 220417214.6,
            "minimum": 220414951.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 544.984993,
            "variance": 297008.6426
          },
          {
            "average": 0.5254835209,
            "count": 2933327,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499350253,
            "variance": 0.2493506752
          },
          {
            "average": 0,
            "count": 2933327,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2933327,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2933327,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2673401227,
            "count": 2933327,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4425714047,
            "variance": 0.1958694483
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102178.87,
          2366902.856,
          1.403120842,
          -101683.07,
          2367376.436,
          34.42312084
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102178.87003674536,
                2366902.8564833654,
                1.403120842238316
              ],
              [
                -102178.87003674536,
                2367376.4364833655,
                1.403120842238316
              ],
              [
                -101683.07003674537,
                2367376.4364833655,
                34.42312084223832
              ],
              [
                -101683.07003674537,
                2366902.8564833654,
                34.42312084223832
              ],
              [
                -102178.87003674536,
                2366902.8564833654,
                1.403120842238316
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:46:54+00:00",
        "end_time": "2018-09-08T04:09:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2047.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2047.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2047.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2047.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7832555,
            71.28033918,
            1.403120842,
            -156.7692285,
            71.28487625,
            34.42312084
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7827152897615,
                  71.28033917823014,
                  1.403120842238316
                ],
                [
                  -156.7832554958805,
                  71.28468587912838,
                  1.403120842238316
                ],
                [
                  -156.76976606758495,
                  71.28487624691812,
                  34.42312084223832
                ],
                [
                  -156.7692284735607,
                  71.28052950351791,
                  34.42312084223832
                ],
                [
                  -156.7827152897615,
                  71.28033917823014,
                  1.403120842238316
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2047.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2047.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:46:54Z",
            "pc:count": 2933327,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101919.3625,
                "count": 2933327,
                "maximum": -101683.07,
                "minimum": -102178.87,
                "name": "X",
                "position": 0,
                "stddev": 134.483446,
                "variance": 18085.79726
              },
              {
                "average": 2367143.417,
                "count": 2933327,
                "maximum": 2367376.436,
                "minimum": 2366902.856,
                "name": "Y",
                "position": 1,
                "stddev": 128.6232849,
                "variance": 16543.94943
              },
              {
                "average": 12.36781486,
                "count": 2933327,
                "maximum": 34.42312084,
                "minimum": 1.403120842,
                "name": "Z",
                "position": 2,
                "stddev": 0.8495175349,
                "variance": 0.721680042
              },
              {
                "average": 30117.15379,
                "count": 2933327,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12134.05836,
                "variance": 147235372.2
              },
              {
                "average": 1.000980116,
                "count": 2933327,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03279164624,
                "variance": 0.001075292063
              },
              {
                "average": 1.001963982,
                "count": 2933327,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04741871751,
                "variance": 0.00224853477
              },
              {
                "average": 0.5018168789,
                "count": 2933327,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999967842,
                "variance": 0.2499967842
              },
              {
                "average": 0.0004455691438,
                "count": 2933327,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02110380923,
                "variance": 0.0004453707638
              },
              {
                "average": 1.321632399,
                "count": 2933327,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5235629548,
                "variance": 0.2741181677
              },
              {
                "average": 1.404486059,
                "count": 2933327,
                "maximum": 16.36800003,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63676979,
                "variance": 113.1408715
              },
              {
                "average": 0.5254835209,
                "count": 2933327,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499350253,
                "variance": 0.2493506752
              },
              {
                "average": 408.2306978,
                "count": 2933327,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9747826713,
                "variance": 0.9502012562
              },
              {
                "average": 220416325.7,
                "count": 2933327,
                "maximum": 220417214.6,
                "minimum": 220414951.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 544.984993,
                "variance": 297008.6426
              },
              {
                "average": 0.5254835209,
                "count": 2933327,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499350253,
                "variance": 0.2493506752
              },
              {
                "average": 0,
                "count": 2933327,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2933327,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2933327,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2673401227,
                "count": 2933327,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4425714047,
                "variance": 0.1958694483
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102178.87,
              2366902.856,
              1.403120842,
              -101683.07,
              2367376.436,
              34.42312084
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102178.87003674536,
                    2366902.8564833654,
                    1.403120842238316
                  ],
                  [
                    -102178.87003674536,
                    2367376.4364833655,
                    1.403120842238316
                  ],
                  [
                    -101683.07003674537,
                    2367376.4364833655,
                    34.42312084223832
                  ],
                  [
                    -101683.07003674537,
                    2366902.8564833654,
                    34.42312084223832
                  ],
                  [
                    -102178.87003674536,
                    2366902.8564833654,
                    1.403120842238316
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:46:54+00:00",
            "end_time": "2018-09-08T04:09:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2199.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69203929742258,
              71.30022575117333,
              -8.418581295154553
            ],
            [
              -156.692562308496,
              71.30457272970125,
              -8.418581295154553
            ],
            [
              -156.67905741635295,
              71.30475694402911,
              21.32141870484545
            ],
            [
              -156.6785370228016,
              71.30040992432313,
              21.32141870484545
            ],
            [
              -156.69203929742258,
              71.30022575117333,
              -8.418581295154553
            ]
          ]
        ]
      },
      "bbox": [
        -156.6925623,
        71.30022575,
        -8.418581295,
        -156.678537,
        71.30475694,
        21.3214187
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:34Z",
        "pc:count": 2332011,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98522.1693,
            "count": 2332011,
            "maximum": -98267.55898,
            "minimum": -98763.45898,
            "name": "X",
            "position": 0,
            "stddev": 137.1299671,
            "variance": 18804.62789
          },
          {
            "average": 2369156.931,
            "count": 2332011,
            "maximum": 2369402.016,
            "minimum": 2368928.496,
            "name": "Y",
            "position": 1,
            "stddev": 130.870808,
            "variance": 17127.16839
          },
          {
            "average": 3.795353155,
            "count": 2332011,
            "maximum": 21.3214187,
            "minimum": -8.418581295,
            "name": "Z",
            "position": 2,
            "stddev": 1.545123611,
            "variance": 2.387406974
          },
          {
            "average": 42904.11562,
            "count": 2332011,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12808.85815,
            "variance": 164066847.2
          },
          {
            "average": 1.005655205,
            "count": 2332011,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0777121364,
            "variance": 0.006039176143
          },
          {
            "average": 1.01130312,
            "count": 2332011,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1114594759,
            "variance": 0.01242321476
          },
          {
            "average": 0.498799534,
            "count": 2332011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999986661,
            "variance": 0.2499986661
          },
          {
            "average": 0.0005235824359,
            "count": 2332011,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02287593762,
            "variance": 0.0005233085218
          },
          {
            "average": 2.365464828,
            "count": 2332011,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.661664124,
            "variance": 7.084455908
          },
          {
            "average": -0.2761792452,
            "count": 2332011,
            "maximum": 16.3560009,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.944112582,
            "variance": 98.88537505
          },
          {
            "average": 0.4703609889,
            "count": 2332011,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499120863,
            "variance": 0.2491216358
          },
          {
            "average": 409.7914281,
            "count": 2332011,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8919139167,
            "variance": 0.7955104348
          },
          {
            "average": 220417198.1,
            "count": 2332011,
            "maximum": 220418394.1,
            "minimum": 220416138.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 504.2499731,
            "variance": 254268.0353
          },
          {
            "average": 0.4703609889,
            "count": 2332011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499120863,
            "variance": 0.2491216358
          },
          {
            "average": 0,
            "count": 2332011,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2332011,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2332011,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2073806684,
            "count": 2332011,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4054306319,
            "variance": 0.1643739973
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98763.45898,
          2368928.496,
          -8.418581295,
          -98267.55898,
          2369402.016,
          21.3214187
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98763.45897910665,
                2368928.4958241396,
                -8.418581295154553
              ],
              [
                -98763.45897910665,
                2369402.015824139,
                -8.418581295154553
              ],
              [
                -98267.55897910666,
                2369402.015824139,
                21.32141870484545
              ],
              [
                -98267.55897910666,
                2368928.4958241396,
                21.32141870484545
              ],
              [
                -98763.45897910665,
                2368928.4958241396,
                -8.418581295154553
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:34+00:00",
        "end_time": "2018-09-08T04:28:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2199.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2199.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2199.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2199.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6925623,
            71.30022575,
            -8.418581295,
            -156.678537,
            71.30475694,
            21.3214187
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69203929742258,
                  71.30022575117333,
                  -8.418581295154553
                ],
                [
                  -156.692562308496,
                  71.30457272970125,
                  -8.418581295154553
                ],
                [
                  -156.67905741635295,
                  71.30475694402911,
                  21.32141870484545
                ],
                [
                  -156.6785370228016,
                  71.30040992432313,
                  21.32141870484545
                ],
                [
                  -156.69203929742258,
                  71.30022575117333,
                  -8.418581295154553
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2199.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2199.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:34Z",
            "pc:count": 2332011,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98522.1693,
                "count": 2332011,
                "maximum": -98267.55898,
                "minimum": -98763.45898,
                "name": "X",
                "position": 0,
                "stddev": 137.1299671,
                "variance": 18804.62789
              },
              {
                "average": 2369156.931,
                "count": 2332011,
                "maximum": 2369402.016,
                "minimum": 2368928.496,
                "name": "Y",
                "position": 1,
                "stddev": 130.870808,
                "variance": 17127.16839
              },
              {
                "average": 3.795353155,
                "count": 2332011,
                "maximum": 21.3214187,
                "minimum": -8.418581295,
                "name": "Z",
                "position": 2,
                "stddev": 1.545123611,
                "variance": 2.387406974
              },
              {
                "average": 42904.11562,
                "count": 2332011,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12808.85815,
                "variance": 164066847.2
              },
              {
                "average": 1.005655205,
                "count": 2332011,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0777121364,
                "variance": 0.006039176143
              },
              {
                "average": 1.01130312,
                "count": 2332011,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1114594759,
                "variance": 0.01242321476
              },
              {
                "average": 0.498799534,
                "count": 2332011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999986661,
                "variance": 0.2499986661
              },
              {
                "average": 0.0005235824359,
                "count": 2332011,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02287593762,
                "variance": 0.0005233085218
              },
              {
                "average": 2.365464828,
                "count": 2332011,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.661664124,
                "variance": 7.084455908
              },
              {
                "average": -0.2761792452,
                "count": 2332011,
                "maximum": 16.3560009,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.944112582,
                "variance": 98.88537505
              },
              {
                "average": 0.4703609889,
                "count": 2332011,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499120863,
                "variance": 0.2491216358
              },
              {
                "average": 409.7914281,
                "count": 2332011,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8919139167,
                "variance": 0.7955104348
              },
              {
                "average": 220417198.1,
                "count": 2332011,
                "maximum": 220418394.1,
                "minimum": 220416138.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 504.2499731,
                "variance": 254268.0353
              },
              {
                "average": 0.4703609889,
                "count": 2332011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499120863,
                "variance": 0.2491216358
              },
              {
                "average": 0,
                "count": 2332011,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2332011,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2332011,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2073806684,
                "count": 2332011,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4054306319,
                "variance": 0.1643739973
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98763.45898,
              2368928.496,
              -8.418581295,
              -98267.55898,
              2369402.016,
              21.3214187
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98763.45897910665,
                    2368928.4958241396,
                    -8.418581295154553
                  ],
                  [
                    -98763.45897910665,
                    2369402.015824139,
                    -8.418581295154553
                  ],
                  [
                    -98267.55897910666,
                    2369402.015824139,
                    21.32141870484545
                  ],
                  [
                    -98267.55897910666,
                    2368928.4958241396,
                    21.32141870484545
                  ],
                  [
                    -98763.45897910665,
                    2368928.4958241396,
                    -8.418581295154553
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:34+00:00",
            "end_time": "2018-09-08T04:28:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2298.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70316619747402,
              71.32489433516027,
              0.865433777249874
            ],
            [
              -156.70368024356623,
              71.32914523555786,
              0.865433777249874
            ],
            [
              -156.69015951420238,
              71.32933025723409,
              12.065433777249876
            ],
            [
              -156.689648033144,
              71.32507931633445,
              12.065433777249876
            ],
            [
              -156.70316619747402,
              71.32489433516027,
              0.865433777249874
            ]
          ]
        ]
      },
      "bbox": [
        -156.7036802,
        71.32489434,
        0.8654337772,
        -156.689648,
        71.32933026,
        12.06543378
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:19Z",
        "pc:count": 1691107,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98804.34323,
            "count": 1691107,
            "maximum": -98566.2593,
            "minimum": -99062.1993,
            "name": "X",
            "position": 0,
            "stddev": 132.1292699,
            "variance": 17458.14398
          },
          {
            "average": 2371852.441,
            "count": 1691107,
            "maximum": 2372090.61,
            "minimum": 2371627.63,
            "name": "Y",
            "position": 1,
            "stddev": 122.659414,
            "variance": 15045.33183
          },
          {
            "average": 1.17820521,
            "count": 1691107,
            "maximum": 12.06543378,
            "minimum": 0.8654337772,
            "name": "Z",
            "position": 2,
            "stddev": 0.2167888688,
            "variance": 0.04699741363
          },
          {
            "average": 14143.89328,
            "count": 1691107,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10134.8799,
            "variance": 102715790.5
          },
          {
            "average": 1.000002365,
            "count": 1691107,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001537956553,
            "variance": 2.365310358e-06
          },
          {
            "average": 1.000004731,
            "count": 1691107,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002174996443,
            "variance": 4.730609527e-06
          },
          {
            "average": 0.4916454133,
            "count": 1691107,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999303438,
            "variance": 0.2499303487
          },
          {
            "average": 0.0005032206714,
            "count": 1691107,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02242694223,
            "variance": 0.0005029677378
          },
          {
            "average": 7.5678523,
            "count": 1691107,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.569908996,
            "variance": 6.60443225
          },
          {
            "average": 3.708790818,
            "count": 1691107,
            "maximum": 16.25399971,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.730377208,
            "variance": 45.29797736
          },
          {
            "average": 0.4893835813,
            "count": 1691107,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998874267,
            "variance": 0.2498874394
          },
          {
            "average": 403.5359466,
            "count": 1691107,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6671671463,
            "variance": 0.4451120012
          },
          {
            "average": 220413661.5,
            "count": 1691107,
            "maximum": 220414479.1,
            "minimum": 220412818.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 366.7131672,
            "variance": 134478.547
          },
          {
            "average": 0.4893835813,
            "count": 1691107,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998874267,
            "variance": 0.2498874394
          },
          {
            "average": 0,
            "count": 1691107,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1691107,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1691107,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04692961474,
            "count": 1691107,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2114881851,
            "variance": 0.04472725245
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99062.1993,
          2371627.63,
          0.8654337772,
          -98566.2593,
          2372090.61,
          12.06543378
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99062.19929933868,
                2371627.6304979827,
                0.865433777249874
              ],
              [
                -99062.19929933868,
                2372090.610497983,
                0.865433777249874
              ],
              [
                -98566.25929933868,
                2372090.610497983,
                12.065433777249876
              ],
              [
                -98566.25929933868,
                2371627.6304979827,
                12.065433777249876
              ],
              [
                -99062.19929933868,
                2371627.6304979827,
                0.865433777249874
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:19+00:00",
        "end_time": "2018-09-08T03:33:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2298.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2298.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2298.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2298.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7036802,
            71.32489434,
            0.8654337772,
            -156.689648,
            71.32933026,
            12.06543378
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70316619747402,
                  71.32489433516027,
                  0.865433777249874
                ],
                [
                  -156.70368024356623,
                  71.32914523555786,
                  0.865433777249874
                ],
                [
                  -156.69015951420238,
                  71.32933025723409,
                  12.065433777249876
                ],
                [
                  -156.689648033144,
                  71.32507931633445,
                  12.065433777249876
                ],
                [
                  -156.70316619747402,
                  71.32489433516027,
                  0.865433777249874
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2298.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2298.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:19Z",
            "pc:count": 1691107,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98804.34323,
                "count": 1691107,
                "maximum": -98566.2593,
                "minimum": -99062.1993,
                "name": "X",
                "position": 0,
                "stddev": 132.1292699,
                "variance": 17458.14398
              },
              {
                "average": 2371852.441,
                "count": 1691107,
                "maximum": 2372090.61,
                "minimum": 2371627.63,
                "name": "Y",
                "position": 1,
                "stddev": 122.659414,
                "variance": 15045.33183
              },
              {
                "average": 1.17820521,
                "count": 1691107,
                "maximum": 12.06543378,
                "minimum": 0.8654337772,
                "name": "Z",
                "position": 2,
                "stddev": 0.2167888688,
                "variance": 0.04699741363
              },
              {
                "average": 14143.89328,
                "count": 1691107,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10134.8799,
                "variance": 102715790.5
              },
              {
                "average": 1.000002365,
                "count": 1691107,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001537956553,
                "variance": 2.365310358e-06
              },
              {
                "average": 1.000004731,
                "count": 1691107,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002174996443,
                "variance": 4.730609527e-06
              },
              {
                "average": 0.4916454133,
                "count": 1691107,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999303438,
                "variance": 0.2499303487
              },
              {
                "average": 0.0005032206714,
                "count": 1691107,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02242694223,
                "variance": 0.0005029677378
              },
              {
                "average": 7.5678523,
                "count": 1691107,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.569908996,
                "variance": 6.60443225
              },
              {
                "average": 3.708790818,
                "count": 1691107,
                "maximum": 16.25399971,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.730377208,
                "variance": 45.29797736
              },
              {
                "average": 0.4893835813,
                "count": 1691107,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998874267,
                "variance": 0.2498874394
              },
              {
                "average": 403.5359466,
                "count": 1691107,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6671671463,
                "variance": 0.4451120012
              },
              {
                "average": 220413661.5,
                "count": 1691107,
                "maximum": 220414479.1,
                "minimum": 220412818.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 366.7131672,
                "variance": 134478.547
              },
              {
                "average": 0.4893835813,
                "count": 1691107,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998874267,
                "variance": 0.2498874394
              },
              {
                "average": 0,
                "count": 1691107,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1691107,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1691107,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04692961474,
                "count": 1691107,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2114881851,
                "variance": 0.04472725245
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99062.1993,
              2371627.63,
              0.8654337772,
              -98566.2593,
              2372090.61,
              12.06543378
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99062.19929933868,
                    2371627.6304979827,
                    0.865433777249874
                  ],
                  [
                    -99062.19929933868,
                    2372090.610497983,
                    0.865433777249874
                  ],
                  [
                    -98566.25929933868,
                    2372090.610497983,
                    12.065433777249876
                  ],
                  [
                    -98566.25929933868,
                    2371627.6304979827,
                    12.065433777249876
                  ],
                  [
                    -99062.19929933868,
                    2371627.6304979827,
                    0.865433777249874
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:19+00:00",
            "end_time": "2018-09-08T03:33:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2259.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64009946145993,
              71.3121534245149,
              2.641099334642834
            ],
            [
              -156.64061281218488,
              71.31650217611744,
              2.641099334642834
            ],
            [
              -156.62710029765356,
              71.31668284355561,
              6.801099334642834
            ],
            [
              -156.6265895683454,
              71.3123340515236,
              6.801099334642834
            ],
            [
              -156.64009946145993,
              71.3121534245149,
              2.641099334642834
            ]
          ]
        ]
      },
      "bbox": [
        -156.6406128,
        71.31215342,
        2.641099335,
        -156.6265896,
        71.31668284,
        6.801099335
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:16Z",
        "pc:count": 3233687,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96561.70975,
            "count": 3233687,
            "maximum": -96311.44962,
            "minimum": -96807.34962,
            "name": "X",
            "position": 0,
            "stddev": 134.7118559,
            "variance": 18147.28411
          },
          {
            "average": 2370387.821,
            "count": 3233687,
            "maximum": 2370622.823,
            "minimum": 2370149.163,
            "name": "Y",
            "position": 1,
            "stddev": 129.0211223,
            "variance": 16646.45001
          },
          {
            "average": 3.009642808,
            "count": 3233687,
            "maximum": 6.801099335,
            "minimum": 2.641099335,
            "name": "Z",
            "position": 2,
            "stddev": 0.3681305485,
            "variance": 0.1355201008
          },
          {
            "average": 29554.0245,
            "count": 3233687,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9425.643815,
            "variance": 88842761.33
          },
          {
            "average": 1,
            "count": 3233687,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3233687,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5027561418,
            "count": 3233687,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999924809,
            "variance": 0.249992481
          },
          {
            "average": 0.0004468583385,
            "count": 3233687,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02113430373,
            "variance": 0.0004466587942
          },
          {
            "average": 1.28843175,
            "count": 3233687,
            "maximum": 3,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4530856019,
            "variance": 0.2052865627
          },
          {
            "average": 1.197636151,
            "count": 3233687,
            "maximum": 16.37400055,
            "minimum": -15.74400043,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.55298507,
            "variance": 111.3654938
          },
          {
            "average": 0.5445149762,
            "count": 3233687,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980145516,
            "variance": 0.2480184936
          },
          {
            "average": 410.4505319,
            "count": 3233687,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.986542755,
            "variance": 0.9732666075
          },
          {
            "average": 220417559,
            "count": 3233687,
            "maximum": 220418436.4,
            "minimum": 220416733.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 553.0927581,
            "variance": 305911.599
          },
          {
            "average": 0.5445149762,
            "count": 3233687,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980145516,
            "variance": 0.2480184936
          },
          {
            "average": 0,
            "count": 3233687,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3233687,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3233687,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2600514521,
            "count": 3233687,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4386624601,
            "variance": 0.1924247539
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96807.34962,
          2370149.163,
          2.641099335,
          -96311.44962,
          2370622.823,
          6.801099335
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96807.34962265517,
                2370149.162944735,
                2.641099334642834
              ],
              [
                -96807.34962265517,
                2370622.822944735,
                2.641099334642834
              ],
              [
                -96311.44962265517,
                2370622.822944735,
                6.801099334642834
              ],
              [
                -96311.44962265517,
                2370149.162944735,
                6.801099334642834
              ],
              [
                -96807.34962265517,
                2370149.162944735,
                2.641099334642834
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:16+00:00",
        "end_time": "2018-09-08T04:38:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2259.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2259.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2259.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2259.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6406128,
            71.31215342,
            2.641099335,
            -156.6265896,
            71.31668284,
            6.801099335
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64009946145993,
                  71.3121534245149,
                  2.641099334642834
                ],
                [
                  -156.64061281218488,
                  71.31650217611744,
                  2.641099334642834
                ],
                [
                  -156.62710029765356,
                  71.31668284355561,
                  6.801099334642834
                ],
                [
                  -156.6265895683454,
                  71.3123340515236,
                  6.801099334642834
                ],
                [
                  -156.64009946145993,
                  71.3121534245149,
                  2.641099334642834
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2259.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2259.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:16Z",
            "pc:count": 3233687,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96561.70975,
                "count": 3233687,
                "maximum": -96311.44962,
                "minimum": -96807.34962,
                "name": "X",
                "position": 0,
                "stddev": 134.7118559,
                "variance": 18147.28411
              },
              {
                "average": 2370387.821,
                "count": 3233687,
                "maximum": 2370622.823,
                "minimum": 2370149.163,
                "name": "Y",
                "position": 1,
                "stddev": 129.0211223,
                "variance": 16646.45001
              },
              {
                "average": 3.009642808,
                "count": 3233687,
                "maximum": 6.801099335,
                "minimum": 2.641099335,
                "name": "Z",
                "position": 2,
                "stddev": 0.3681305485,
                "variance": 0.1355201008
              },
              {
                "average": 29554.0245,
                "count": 3233687,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9425.643815,
                "variance": 88842761.33
              },
              {
                "average": 1,
                "count": 3233687,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3233687,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5027561418,
                "count": 3233687,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999924809,
                "variance": 0.249992481
              },
              {
                "average": 0.0004468583385,
                "count": 3233687,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02113430373,
                "variance": 0.0004466587942
              },
              {
                "average": 1.28843175,
                "count": 3233687,
                "maximum": 3,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4530856019,
                "variance": 0.2052865627
              },
              {
                "average": 1.197636151,
                "count": 3233687,
                "maximum": 16.37400055,
                "minimum": -15.74400043,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.55298507,
                "variance": 111.3654938
              },
              {
                "average": 0.5445149762,
                "count": 3233687,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980145516,
                "variance": 0.2480184936
              },
              {
                "average": 410.4505319,
                "count": 3233687,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.986542755,
                "variance": 0.9732666075
              },
              {
                "average": 220417559,
                "count": 3233687,
                "maximum": 220418436.4,
                "minimum": 220416733.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 553.0927581,
                "variance": 305911.599
              },
              {
                "average": 0.5445149762,
                "count": 3233687,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980145516,
                "variance": 0.2480184936
              },
              {
                "average": 0,
                "count": 3233687,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3233687,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3233687,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2600514521,
                "count": 3233687,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4386624601,
                "variance": 0.1924247539
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96807.34962,
              2370149.163,
              2.641099335,
              -96311.44962,
              2370622.823,
              6.801099335
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96807.34962265517,
                    2370149.162944735,
                    2.641099334642834
                  ],
                  [
                    -96807.34962265517,
                    2370622.822944735,
                    2.641099334642834
                  ],
                  [
                    -96311.44962265517,
                    2370622.822944735,
                    6.801099334642834
                  ],
                  [
                    -96311.44962265517,
                    2370149.162944735,
                    6.801099334642834
                  ],
                  [
                    -96807.34962265517,
                    2370149.162944735,
                    2.641099334642834
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:16+00:00",
            "end_time": "2018-09-08T04:38:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2361.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.54806897413195,
              71.34676370234101,
              0.825356116127969
            ],
            [
              -156.5482800530475,
              71.3486142276341,
              0.825356116127969
            ],
            [
              -156.53996836508867,
              71.34872143774183,
              1.385356116127969
            ],
            [
              -156.53975797330082,
              71.34687090221937,
              1.385356116127969
            ],
            [
              -156.54806897413195,
              71.34676370234101,
              0.825356116127969
            ]
          ]
        ]
      },
      "bbox": [
        -156.5482801,
        71.3467637,
        0.8253561161,
        -156.539758,
        71.34872144,
        1.385356116
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:05Z",
        "pc:count": 255178,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93183.23414,
            "count": 255178,
            "maximum": -92985.40343,
            "minimum": -93289.98343,
            "name": "X",
            "position": 0,
            "stddev": 69.95732611,
            "variance": 4894.027476
          },
          {
            "average": 2373908.913,
            "count": 255178,
            "maximum": 2373982.413,
            "minimum": 2373780.913,
            "name": "Y",
            "position": 1,
            "stddev": 45.25607763,
            "variance": 2048.112563
          },
          {
            "average": 1.112690134,
            "count": 255178,
            "maximum": 1.385356116,
            "minimum": 0.8253561161,
            "name": "Z",
            "position": 2,
            "stddev": 0.05797464709,
            "variance": 0.003361059705
          },
          {
            "average": 16650.59451,
            "count": 255178,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12417.55898,
            "variance": 154195771.1
          },
          {
            "average": 1,
            "count": 255178,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 255178,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.508852644,
            "count": 255178,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999226041,
            "variance": 0.2499226101
          },
          {
            "average": 0.0008190361238,
            "count": 255178,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0286071409,
            "variance": 0.0008183685107
          },
          {
            "average": 7.586100683,
            "count": 255178,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.509211551,
            "variance": 6.296142607
          },
          {
            "average": -2.658787873,
            "count": 255178,
            "maximum": 16.33799934,
            "minimum": -12.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.82610007,
            "variance": 46.59564216
          },
          {
            "average": 0.4692606729,
            "count": 255178,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990551771,
            "variance": 0.2490560698
          },
          {
            "average": 408.8236917,
            "count": 255178,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6091723938,
            "variance": 0.3710910054
          },
          {
            "average": 220416626.1,
            "count": 255178,
            "maximum": 220417405,
            "minimum": 220415507.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 326.5547812,
            "variance": 106638.0252
          },
          {
            "average": 0.4692606729,
            "count": 255178,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990551771,
            "variance": 0.2490560698
          },
          {
            "average": 0,
            "count": 255178,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 255178,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 255178,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06354387917,
            "count": 255178,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2439391067,
            "variance": 0.05950628779
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93289.98343,
          2373780.913,
          0.8253561161,
          -92985.40343,
          2373982.413,
          1.385356116
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93289.98343376529,
                2373780.9127262095,
                0.825356116127969
              ],
              [
                -93289.98343376529,
                2373982.4127262095,
                0.825356116127969
              ],
              [
                -92985.4034337653,
                2373982.4127262095,
                1.385356116127969
              ],
              [
                -92985.4034337653,
                2373780.9127262095,
                1.385356116127969
              ],
              [
                -93289.98343376529,
                2373780.9127262095,
                0.825356116127969
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:05+00:00",
        "end_time": "2018-09-08T04:18:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2361.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2361.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2361.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2361.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5482801,
            71.3467637,
            0.8253561161,
            -156.539758,
            71.34872144,
            1.385356116
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.54806897413195,
                  71.34676370234101,
                  0.825356116127969
                ],
                [
                  -156.5482800530475,
                  71.3486142276341,
                  0.825356116127969
                ],
                [
                  -156.53996836508867,
                  71.34872143774183,
                  1.385356116127969
                ],
                [
                  -156.53975797330082,
                  71.34687090221937,
                  1.385356116127969
                ],
                [
                  -156.54806897413195,
                  71.34676370234101,
                  0.825356116127969
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2361.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2361.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:05Z",
            "pc:count": 255178,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93183.23414,
                "count": 255178,
                "maximum": -92985.40343,
                "minimum": -93289.98343,
                "name": "X",
                "position": 0,
                "stddev": 69.95732611,
                "variance": 4894.027476
              },
              {
                "average": 2373908.913,
                "count": 255178,
                "maximum": 2373982.413,
                "minimum": 2373780.913,
                "name": "Y",
                "position": 1,
                "stddev": 45.25607763,
                "variance": 2048.112563
              },
              {
                "average": 1.112690134,
                "count": 255178,
                "maximum": 1.385356116,
                "minimum": 0.8253561161,
                "name": "Z",
                "position": 2,
                "stddev": 0.05797464709,
                "variance": 0.003361059705
              },
              {
                "average": 16650.59451,
                "count": 255178,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12417.55898,
                "variance": 154195771.1
              },
              {
                "average": 1,
                "count": 255178,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 255178,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.508852644,
                "count": 255178,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999226041,
                "variance": 0.2499226101
              },
              {
                "average": 0.0008190361238,
                "count": 255178,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0286071409,
                "variance": 0.0008183685107
              },
              {
                "average": 7.586100683,
                "count": 255178,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.509211551,
                "variance": 6.296142607
              },
              {
                "average": -2.658787873,
                "count": 255178,
                "maximum": 16.33799934,
                "minimum": -12.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.82610007,
                "variance": 46.59564216
              },
              {
                "average": 0.4692606729,
                "count": 255178,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990551771,
                "variance": 0.2490560698
              },
              {
                "average": 408.8236917,
                "count": 255178,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6091723938,
                "variance": 0.3710910054
              },
              {
                "average": 220416626.1,
                "count": 255178,
                "maximum": 220417405,
                "minimum": 220415507.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 326.5547812,
                "variance": 106638.0252
              },
              {
                "average": 0.4692606729,
                "count": 255178,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990551771,
                "variance": 0.2490560698
              },
              {
                "average": 0,
                "count": 255178,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 255178,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 255178,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06354387917,
                "count": 255178,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2439391067,
                "variance": 0.05950628779
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93289.98343,
              2373780.913,
              0.8253561161,
              -92985.40343,
              2373982.413,
              1.385356116
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93289.98343376529,
                    2373780.9127262095,
                    0.825356116127969
                  ],
                  [
                    -93289.98343376529,
                    2373982.4127262095,
                    0.825356116127969
                  ],
                  [
                    -92985.4034337653,
                    2373982.4127262095,
                    1.385356116127969
                  ],
                  [
                    -92985.4034337653,
                    2373780.9127262095,
                    1.385356116127969
                  ],
                  [
                    -93289.98343376529,
                    2373780.9127262095,
                    0.825356116127969
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:05+00:00",
            "end_time": "2018-09-08T04:18:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2179.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66678082360008,
              71.29594912206763,
              3.894387173385899
            ],
            [
              -156.66729891866765,
              71.30029677607592,
              3.894387173385899
            ],
            [
              -156.65379748830676,
              71.30047923869108,
              8.9743871733859
            ],
            [
              -156.65328201015302,
              71.2961315439001,
              8.9743871733859
            ],
            [
              -156.66678082360008,
              71.29594912206763,
              3.894387173385899
            ]
          ]
        ]
      },
      "bbox": [
        -156.6672989,
        71.29594912,
        3.894387173,
        -156.653282,
        71.30047924,
        8.974387173
      ],
      "properties": {
        "datetime": "2018-09-08T05:24:41Z",
        "pc:count": 3168410,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97607.05237,
            "count": 3168410,
            "maximum": -97360.12303,
            "minimum": -97855.98303,
            "name": "X",
            "position": 0,
            "stddev": 134.3901328,
            "variance": 18060.7078
          },
          {
            "average": 2368659.748,
            "count": 3168410,
            "maximum": 2368899.596,
            "minimum": 2368425.996,
            "name": "Y",
            "position": 1,
            "stddev": 129.1224153,
            "variance": 16672.59813
          },
          {
            "average": 5.562501297,
            "count": 3168410,
            "maximum": 8.974387173,
            "minimum": 3.894387173,
            "name": "Z",
            "position": 2,
            "stddev": 1.229758733,
            "variance": 1.512306542
          },
          {
            "average": 42380.37609,
            "count": 3168410,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11590.78532,
            "variance": 134346304.2
          },
          {
            "average": 1,
            "count": 3168410,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3168410,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5025940456,
            "count": 3168410,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999933498,
            "variance": 0.2499933498
          },
          {
            "average": 0.0004443869322,
            "count": 3168410,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02107580586,
            "variance": 0.0004441895927
          },
          {
            "average": 1.290504385,
            "count": 3168410,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4542426345,
            "variance": 0.206336371
          },
          {
            "average": 1.317152316,
            "count": 3168410,
            "maximum": 16.50600052,
            "minimum": -15.94200039,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.64190428,
            "variance": 113.2501267
          },
          {
            "average": 0.5389902191,
            "count": 3168410,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984775233,
            "variance": 0.2484798412
          },
          {
            "average": 412.4172957,
            "count": 3168410,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9940527767,
            "variance": 0.9881409229
          },
          {
            "average": 220418648.2,
            "count": 3168410,
            "maximum": 220419481.9,
            "minimum": 220417886.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 536.7183437,
            "variance": 288066.5805
          },
          {
            "average": 0.5389902191,
            "count": 3168410,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984775233,
            "variance": 0.2484798412
          },
          {
            "average": 0,
            "count": 3168410,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3168410,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3168410,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2721731089,
            "count": 3168410,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4450786113,
            "variance": 0.1980949702
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97855.98303,
          2368425.996,
          3.894387173,
          -97360.12303,
          2368899.596,
          8.974387173
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97855.98303099559,
                2368425.9963705363,
                3.894387173385899
              ],
              [
                -97855.98303099559,
                2368899.596370536,
                3.894387173385899
              ],
              [
                -97360.1230309956,
                2368899.596370536,
                8.9743871733859
              ],
              [
                -97360.1230309956,
                2368425.9963705363,
                8.9743871733859
              ],
              [
                -97855.98303099559,
                2368425.9963705363,
                3.894387173385899
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:24:41+00:00",
        "end_time": "2018-09-08T04:58:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2179.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2179.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2179.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2179.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6672989,
            71.29594912,
            3.894387173,
            -156.653282,
            71.30047924,
            8.974387173
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66678082360008,
                  71.29594912206763,
                  3.894387173385899
                ],
                [
                  -156.66729891866765,
                  71.30029677607592,
                  3.894387173385899
                ],
                [
                  -156.65379748830676,
                  71.30047923869108,
                  8.9743871733859
                ],
                [
                  -156.65328201015302,
                  71.2961315439001,
                  8.9743871733859
                ],
                [
                  -156.66678082360008,
                  71.29594912206763,
                  3.894387173385899
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2179.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2179.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:24:41Z",
            "pc:count": 3168410,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97607.05237,
                "count": 3168410,
                "maximum": -97360.12303,
                "minimum": -97855.98303,
                "name": "X",
                "position": 0,
                "stddev": 134.3901328,
                "variance": 18060.7078
              },
              {
                "average": 2368659.748,
                "count": 3168410,
                "maximum": 2368899.596,
                "minimum": 2368425.996,
                "name": "Y",
                "position": 1,
                "stddev": 129.1224153,
                "variance": 16672.59813
              },
              {
                "average": 5.562501297,
                "count": 3168410,
                "maximum": 8.974387173,
                "minimum": 3.894387173,
                "name": "Z",
                "position": 2,
                "stddev": 1.229758733,
                "variance": 1.512306542
              },
              {
                "average": 42380.37609,
                "count": 3168410,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11590.78532,
                "variance": 134346304.2
              },
              {
                "average": 1,
                "count": 3168410,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3168410,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5025940456,
                "count": 3168410,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999933498,
                "variance": 0.2499933498
              },
              {
                "average": 0.0004443869322,
                "count": 3168410,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02107580586,
                "variance": 0.0004441895927
              },
              {
                "average": 1.290504385,
                "count": 3168410,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4542426345,
                "variance": 0.206336371
              },
              {
                "average": 1.317152316,
                "count": 3168410,
                "maximum": 16.50600052,
                "minimum": -15.94200039,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.64190428,
                "variance": 113.2501267
              },
              {
                "average": 0.5389902191,
                "count": 3168410,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984775233,
                "variance": 0.2484798412
              },
              {
                "average": 412.4172957,
                "count": 3168410,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9940527767,
                "variance": 0.9881409229
              },
              {
                "average": 220418648.2,
                "count": 3168410,
                "maximum": 220419481.9,
                "minimum": 220417886.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 536.7183437,
                "variance": 288066.5805
              },
              {
                "average": 0.5389902191,
                "count": 3168410,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984775233,
                "variance": 0.2484798412
              },
              {
                "average": 0,
                "count": 3168410,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3168410,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3168410,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2721731089,
                "count": 3168410,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4450786113,
                "variance": 0.1980949702
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97855.98303,
              2368425.996,
              3.894387173,
              -97360.12303,
              2368899.596,
              8.974387173
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97855.98303099559,
                    2368425.9963705363,
                    3.894387173385899
                  ],
                  [
                    -97855.98303099559,
                    2368899.596370536,
                    3.894387173385899
                  ],
                  [
                    -97360.1230309956,
                    2368899.596370536,
                    8.9743871733859
                  ],
                  [
                    -97360.1230309956,
                    2368425.9963705363,
                    8.9743871733859
                  ],
                  [
                    -97855.98303099559,
                    2368425.9963705363,
                    3.894387173385899
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:24:41+00:00",
            "end_time": "2018-09-08T04:58:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2354.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63579053776178,
              71.34495461347927,
              0.836684107935315
            ],
            [
              -156.63608220104854,
              71.34742654203035,
              0.836684107935315
            ],
            [
              -156.62485665537665,
              71.34757626305716,
              1.476684107935315
            ],
            [
              -156.62456623152147,
              71.34510431542544,
              1.476684107935315
            ],
            [
              -156.63579053776178,
              71.34495461347927,
              0.836684107935315
            ]
          ]
        ]
      },
      "bbox": [
        -156.6360822,
        71.34495461,
        0.8366841079,
        -156.6245662,
        71.34757626,
        1.476684108
      ],
      "properties": {
        "datetime": "2018-09-08T04:00:23Z",
        "pc:count": 460791,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96245.22945,
            "count": 460791,
            "maximum": -96096.40026,
            "minimum": -96507.80026,
            "name": "X",
            "position": 0,
            "stddev": 97.92933135,
            "variance": 9590.15394
          },
          {
            "average": 2373810.531,
            "count": 460791,
            "maximum": 2373978.748,
            "minimum": 2373709.568,
            "name": "Y",
            "position": 1,
            "stddev": 62.29483114,
            "variance": 3880.645986
          },
          {
            "average": 1.135431957,
            "count": 460791,
            "maximum": 1.476684108,
            "minimum": 0.8366841079,
            "name": "Z",
            "position": 2,
            "stddev": 0.07066259548,
            "variance": 0.0049932024
          },
          {
            "average": 14054.58236,
            "count": 460791,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10482.0919,
            "variance": 109874250.5
          },
          {
            "average": 1,
            "count": 460791,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 460791,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4941394255,
            "count": 460791,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499966195,
            "variance": 0.2499661961
          },
          {
            "average": 0.000670586014,
            "count": 460791,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02588701958,
            "variance": 0.0006701377828
          },
          {
            "average": 7.470295644,
            "count": 460791,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.658784682,
            "variance": 7.069135987
          },
          {
            "average": 2.489330769,
            "count": 460791,
            "maximum": 16.09199905,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.69705538,
            "variance": 59.24466153
          },
          {
            "average": 0.4839091909,
            "count": 460791,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997415611,
            "variance": 0.2497416278
          },
          {
            "average": 403.819276,
            "count": 460791,
            "maximum": 405,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6699666299,
            "variance": 0.4488552852
          },
          {
            "average": 220413819,
            "count": 460791,
            "maximum": 220414423.6,
            "minimum": 220413306.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 389.8908998,
            "variance": 152014.9138
          },
          {
            "average": 0.4839091909,
            "count": 460791,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997415611,
            "variance": 0.2497416278
          },
          {
            "average": 0,
            "count": 460791,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 460791,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 460791,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06995796359,
            "count": 460791,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2550764358,
            "variance": 0.06506398812
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96507.80026,
          2373709.568,
          0.8366841079,
          -96096.40026,
          2373978.748,
          1.476684108
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96507.80025652831,
                2373709.5678709135,
                0.836684107935315
              ],
              [
                -96507.80025652831,
                2373978.7478709132,
                0.836684107935315
              ],
              [
                -96096.40025652832,
                2373978.7478709132,
                1.476684107935315
              ],
              [
                -96096.40025652832,
                2373709.5678709135,
                1.476684107935315
              ],
              [
                -96507.80025652831,
                2373709.5678709135,
                0.836684107935315
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:00:23+00:00",
        "end_time": "2018-09-08T03:41:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2354.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2354.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2354.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2354.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6360822,
            71.34495461,
            0.8366841079,
            -156.6245662,
            71.34757626,
            1.476684108
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63579053776178,
                  71.34495461347927,
                  0.836684107935315
                ],
                [
                  -156.63608220104854,
                  71.34742654203035,
                  0.836684107935315
                ],
                [
                  -156.62485665537665,
                  71.34757626305716,
                  1.476684107935315
                ],
                [
                  -156.62456623152147,
                  71.34510431542544,
                  1.476684107935315
                ],
                [
                  -156.63579053776178,
                  71.34495461347927,
                  0.836684107935315
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2354.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2354.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:00:23Z",
            "pc:count": 460791,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96245.22945,
                "count": 460791,
                "maximum": -96096.40026,
                "minimum": -96507.80026,
                "name": "X",
                "position": 0,
                "stddev": 97.92933135,
                "variance": 9590.15394
              },
              {
                "average": 2373810.531,
                "count": 460791,
                "maximum": 2373978.748,
                "minimum": 2373709.568,
                "name": "Y",
                "position": 1,
                "stddev": 62.29483114,
                "variance": 3880.645986
              },
              {
                "average": 1.135431957,
                "count": 460791,
                "maximum": 1.476684108,
                "minimum": 0.8366841079,
                "name": "Z",
                "position": 2,
                "stddev": 0.07066259548,
                "variance": 0.0049932024
              },
              {
                "average": 14054.58236,
                "count": 460791,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10482.0919,
                "variance": 109874250.5
              },
              {
                "average": 1,
                "count": 460791,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 460791,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4941394255,
                "count": 460791,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499966195,
                "variance": 0.2499661961
              },
              {
                "average": 0.000670586014,
                "count": 460791,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02588701958,
                "variance": 0.0006701377828
              },
              {
                "average": 7.470295644,
                "count": 460791,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.658784682,
                "variance": 7.069135987
              },
              {
                "average": 2.489330769,
                "count": 460791,
                "maximum": 16.09199905,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.69705538,
                "variance": 59.24466153
              },
              {
                "average": 0.4839091909,
                "count": 460791,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997415611,
                "variance": 0.2497416278
              },
              {
                "average": 403.819276,
                "count": 460791,
                "maximum": 405,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6699666299,
                "variance": 0.4488552852
              },
              {
                "average": 220413819,
                "count": 460791,
                "maximum": 220414423.6,
                "minimum": 220413306.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 389.8908998,
                "variance": 152014.9138
              },
              {
                "average": 0.4839091909,
                "count": 460791,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997415611,
                "variance": 0.2497416278
              },
              {
                "average": 0,
                "count": 460791,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 460791,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 460791,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06995796359,
                "count": 460791,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2550764358,
                "variance": 0.06506398812
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96507.80026,
              2373709.568,
              0.8366841079,
              -96096.40026,
              2373978.748,
              1.476684108
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96507.80025652831,
                    2373709.5678709135,
                    0.836684107935315
                  ],
                  [
                    -96507.80025652831,
                    2373978.7478709132,
                    0.836684107935315
                  ],
                  [
                    -96096.40025652832,
                    2373978.7478709132,
                    1.476684107935315
                  ],
                  [
                    -96096.40025652832,
                    2373709.5678709135,
                    1.476684107935315
                  ],
                  [
                    -96507.80025652831,
                    2373709.5678709135,
                    0.836684107935315
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:00:23+00:00",
            "end_time": "2018-09-08T03:41:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2313.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67731470302627,
              71.32881402877497,
              -14.286456883061547
            ],
            [
              -156.677835365968,
              71.33316060368081,
              -14.286456883061547
            ],
            [
              -156.66430872437684,
              71.33334390237616,
              125.55354311693846
            ],
            [
              -156.66379068581847,
              71.32899728643302,
              125.55354311693846
            ],
            [
              -156.67731470302627,
              71.32881402877497,
              -14.286456883061547
            ]
          ]
        ]
      },
      "bbox": [
        -156.6778354,
        71.32881403,
        -14.28645688,
        -156.6637907,
        71.3333439,
        125.5535431
      ],
      "properties": {
        "datetime": "2018-09-08T04:11:07Z",
        "pc:count": 2532441,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97832.79593,
            "count": 2532441,
            "maximum": -97602.09079,
            "minimum": -98098.15079,
            "name": "X",
            "position": 0,
            "stddev": 133.8264582,
            "variance": 17909.52092
          },
          {
            "average": 2372228.463,
            "count": 2532441,
            "maximum": 2372488.841,
            "minimum": 2372015.461,
            "name": "Y",
            "position": 1,
            "stddev": 128.0530034,
            "variance": 16397.57169
          },
          {
            "average": 2.778406369,
            "count": 2532441,
            "maximum": 125.5535431,
            "minimum": -14.28645688,
            "name": "Z",
            "position": 2,
            "stddev": 1.630883542,
            "variance": 2.659781127
          },
          {
            "average": 19501.06797,
            "count": 2532441,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9930.861942,
            "variance": 98622018.91
          },
          {
            "average": 1.008064551,
            "count": 2532441,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09088094298,
            "variance": 0.008259345798
          },
          {
            "average": 1.016114097,
            "count": 2532441,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1289603255,
            "variance": 0.01663076556
          },
          {
            "average": 0.5037013695,
            "count": 2532441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999863984,
            "variance": 0.2499863986
          },
          {
            "average": 0.0004398917882,
            "count": 2532441,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02096898798,
            "variance": 0.000439698457
          },
          {
            "average": 3.425162126,
            "count": 2532441,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.315880393,
            "variance": 10.99506278
          },
          {
            "average": 0.5384363798,
            "count": 2532441,
            "maximum": 16.33799934,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.558080114,
            "variance": 91.35689546
          },
          {
            "average": 0.5564192808,
            "count": 2532441,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4968067655,
            "variance": 0.2468169622
          },
          {
            "average": 404.4469498,
            "count": 2532441,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9094074012,
            "variance": 0.8270218214
          },
          {
            "average": 220414170.2,
            "count": 2532441,
            "maximum": 220415067.6,
            "minimum": 220413344,
            "name": "GpsTime",
            "position": 12,
            "stddev": 511.4136405,
            "variance": 261543.9116
          },
          {
            "average": 0.5564192808,
            "count": 2532441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4968067655,
            "variance": 0.2468169622
          },
          {
            "average": 0,
            "count": 2532441,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2532441,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2532441,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2052592736,
            "count": 2532441,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4038910355,
            "variance": 0.1631279686
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98098.15079,
          2372015.461,
          -14.28645688,
          -97602.09079,
          2372488.841,
          125.5535431
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98098.15079464143,
                2372015.460727245,
                -14.286456883061547
              ],
              [
                -98098.15079464143,
                2372488.840727245,
                -14.286456883061547
              ],
              [
                -97602.09079464144,
                2372488.840727245,
                125.55354311693846
              ],
              [
                -97602.09079464144,
                2372015.460727245,
                125.55354311693846
              ],
              [
                -98098.15079464143,
                2372015.460727245,
                -14.286456883061547
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:11:07+00:00",
        "end_time": "2018-09-08T03:42:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2313.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2313.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2313.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2313.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6778354,
            71.32881403,
            -14.28645688,
            -156.6637907,
            71.3333439,
            125.5535431
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67731470302627,
                  71.32881402877497,
                  -14.286456883061547
                ],
                [
                  -156.677835365968,
                  71.33316060368081,
                  -14.286456883061547
                ],
                [
                  -156.66430872437684,
                  71.33334390237616,
                  125.55354311693846
                ],
                [
                  -156.66379068581847,
                  71.32899728643302,
                  125.55354311693846
                ],
                [
                  -156.67731470302627,
                  71.32881402877497,
                  -14.286456883061547
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2313.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2313.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:11:07Z",
            "pc:count": 2532441,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97832.79593,
                "count": 2532441,
                "maximum": -97602.09079,
                "minimum": -98098.15079,
                "name": "X",
                "position": 0,
                "stddev": 133.8264582,
                "variance": 17909.52092
              },
              {
                "average": 2372228.463,
                "count": 2532441,
                "maximum": 2372488.841,
                "minimum": 2372015.461,
                "name": "Y",
                "position": 1,
                "stddev": 128.0530034,
                "variance": 16397.57169
              },
              {
                "average": 2.778406369,
                "count": 2532441,
                "maximum": 125.5535431,
                "minimum": -14.28645688,
                "name": "Z",
                "position": 2,
                "stddev": 1.630883542,
                "variance": 2.659781127
              },
              {
                "average": 19501.06797,
                "count": 2532441,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9930.861942,
                "variance": 98622018.91
              },
              {
                "average": 1.008064551,
                "count": 2532441,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09088094298,
                "variance": 0.008259345798
              },
              {
                "average": 1.016114097,
                "count": 2532441,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1289603255,
                "variance": 0.01663076556
              },
              {
                "average": 0.5037013695,
                "count": 2532441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999863984,
                "variance": 0.2499863986
              },
              {
                "average": 0.0004398917882,
                "count": 2532441,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02096898798,
                "variance": 0.000439698457
              },
              {
                "average": 3.425162126,
                "count": 2532441,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.315880393,
                "variance": 10.99506278
              },
              {
                "average": 0.5384363798,
                "count": 2532441,
                "maximum": 16.33799934,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.558080114,
                "variance": 91.35689546
              },
              {
                "average": 0.5564192808,
                "count": 2532441,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4968067655,
                "variance": 0.2468169622
              },
              {
                "average": 404.4469498,
                "count": 2532441,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9094074012,
                "variance": 0.8270218214
              },
              {
                "average": 220414170.2,
                "count": 2532441,
                "maximum": 220415067.6,
                "minimum": 220413344,
                "name": "GpsTime",
                "position": 12,
                "stddev": 511.4136405,
                "variance": 261543.9116
              },
              {
                "average": 0.5564192808,
                "count": 2532441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4968067655,
                "variance": 0.2468169622
              },
              {
                "average": 0,
                "count": 2532441,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2532441,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2532441,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2052592736,
                "count": 2532441,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4038910355,
                "variance": 0.1631279686
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98098.15079,
              2372015.461,
              -14.28645688,
              -97602.09079,
              2372488.841,
              125.5535431
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98098.15079464143,
                    2372015.460727245,
                    -14.286456883061547
                  ],
                  [
                    -98098.15079464143,
                    2372488.840727245,
                    -14.286456883061547
                  ],
                  [
                    -97602.09079464144,
                    2372488.840727245,
                    125.55354311693846
                  ],
                  [
                    -97602.09079464144,
                    2372015.460727245,
                    125.55354311693846
                  ],
                  [
                    -98098.15079464143,
                    2372015.460727245,
                    -14.286456883061547
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:11:07+00:00",
            "end_time": "2018-09-08T03:42:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2362.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.615512248534,
              71.34905403305646,
              0.897648954359644
            ],
            [
              -156.6155856916517,
              71.34968126550119,
              0.897648954359644
            ],
            [
              -156.61189455850428,
              71.34973017858103,
              1.457648954359644
            ],
            [
              -156.61182121881606,
              71.34910294455423,
              1.457648954359644
            ],
            [
              -156.615512248534,
              71.34905403305646,
              0.897648954359644
            ]
          ]
        ]
      },
      "bbox": [
        -156.6155857,
        71.34905403,
        0.8976489544,
        -156.6118212,
        71.34973018,
        1.457648954
      ],
      "properties": {
        "datetime": "2018-09-08T04:00:09Z",
        "pc:count": 43575,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95658.78936,
            "count": 43575,
            "maximum": -95612.88636,
            "minimum": -95748.14636,
            "name": "X",
            "position": 0,
            "stddev": 31.26429857,
            "variance": 977.4563648
          },
          {
            "average": 2374151.743,
            "count": 43575,
            "maximum": 2374194.218,
            "minimum": 2374125.918,
            "name": "Y",
            "position": 1,
            "stddev": 15.3876853,
            "variance": 236.780859
          },
          {
            "average": 1.163328128,
            "count": 43575,
            "maximum": 1.457648954,
            "minimum": 0.8976489544,
            "name": "Z",
            "position": 2,
            "stddev": 0.07298758562,
            "variance": 0.005327187654
          },
          {
            "average": 12782.6436,
            "count": 43575,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10574.96035,
            "variance": 111829786.5
          },
          {
            "average": 1,
            "count": 43575,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 43575,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4994606999,
            "count": 43575,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000054465,
            "variance": 0.2500054465
          },
          {
            "average": 0,
            "count": 43575,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 7.274698795,
            "count": 43575,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.920387057,
            "variance": 8.528660564
          },
          {
            "average": 1.397720068,
            "count": 43575,
            "maximum": 15.44999981,
            "minimum": -13.83600044,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.012541062,
            "variance": 81.22589639
          },
          {
            "average": 0.4741480207,
            "count": 43575,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993369576,
            "variance": 0.2493373972
          },
          {
            "average": 403.8888812,
            "count": 43575,
            "maximum": 405,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7204015254,
            "variance": 0.5189783577
          },
          {
            "average": 220413851.5,
            "count": 43575,
            "maximum": 220414409.3,
            "minimum": 220413298.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 412.8721109,
            "variance": 170463.38
          },
          {
            "average": 0.4741480207,
            "count": 43575,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993369576,
            "variance": 0.2493373972
          },
          {
            "average": 0,
            "count": 43575,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 43575,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 43575,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.009110728629,
            "count": 43575,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.09501542209,
            "variance": 0.009027930434
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95748.14636,
          2374125.918,
          0.8976489544,
          -95612.88636,
          2374194.218,
          1.457648954
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95748.14635681041,
                2374125.9182397905,
                0.897648954359644
              ],
              [
                -95748.14635681041,
                2374194.2182397903,
                0.897648954359644
              ],
              [
                -95612.8863568104,
                2374194.2182397903,
                1.457648954359644
              ],
              [
                -95612.8863568104,
                2374125.9182397905,
                1.457648954359644
              ],
              [
                -95748.14635681041,
                2374125.9182397905,
                0.897648954359644
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:00:09+00:00",
        "end_time": "2018-09-08T03:41:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2362.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2362.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2362.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2362.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6155857,
            71.34905403,
            0.8976489544,
            -156.6118212,
            71.34973018,
            1.457648954
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.615512248534,
                  71.34905403305646,
                  0.897648954359644
                ],
                [
                  -156.6155856916517,
                  71.34968126550119,
                  0.897648954359644
                ],
                [
                  -156.61189455850428,
                  71.34973017858103,
                  1.457648954359644
                ],
                [
                  -156.61182121881606,
                  71.34910294455423,
                  1.457648954359644
                ],
                [
                  -156.615512248534,
                  71.34905403305646,
                  0.897648954359644
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2362.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2362.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:00:09Z",
            "pc:count": 43575,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95658.78936,
                "count": 43575,
                "maximum": -95612.88636,
                "minimum": -95748.14636,
                "name": "X",
                "position": 0,
                "stddev": 31.26429857,
                "variance": 977.4563648
              },
              {
                "average": 2374151.743,
                "count": 43575,
                "maximum": 2374194.218,
                "minimum": 2374125.918,
                "name": "Y",
                "position": 1,
                "stddev": 15.3876853,
                "variance": 236.780859
              },
              {
                "average": 1.163328128,
                "count": 43575,
                "maximum": 1.457648954,
                "minimum": 0.8976489544,
                "name": "Z",
                "position": 2,
                "stddev": 0.07298758562,
                "variance": 0.005327187654
              },
              {
                "average": 12782.6436,
                "count": 43575,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10574.96035,
                "variance": 111829786.5
              },
              {
                "average": 1,
                "count": 43575,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 43575,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4994606999,
                "count": 43575,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000054465,
                "variance": 0.2500054465
              },
              {
                "average": 0,
                "count": 43575,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 7.274698795,
                "count": 43575,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.920387057,
                "variance": 8.528660564
              },
              {
                "average": 1.397720068,
                "count": 43575,
                "maximum": 15.44999981,
                "minimum": -13.83600044,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.012541062,
                "variance": 81.22589639
              },
              {
                "average": 0.4741480207,
                "count": 43575,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993369576,
                "variance": 0.2493373972
              },
              {
                "average": 403.8888812,
                "count": 43575,
                "maximum": 405,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7204015254,
                "variance": 0.5189783577
              },
              {
                "average": 220413851.5,
                "count": 43575,
                "maximum": 220414409.3,
                "minimum": 220413298.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 412.8721109,
                "variance": 170463.38
              },
              {
                "average": 0.4741480207,
                "count": 43575,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993369576,
                "variance": 0.2493373972
              },
              {
                "average": 0,
                "count": 43575,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 43575,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 43575,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.009110728629,
                "count": 43575,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.09501542209,
                "variance": 0.009027930434
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95748.14636,
              2374125.918,
              0.8976489544,
              -95612.88636,
              2374194.218,
              1.457648954
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95748.14635681041,
                    2374125.9182397905,
                    0.897648954359644
                  ],
                  [
                    -95748.14635681041,
                    2374194.2182397903,
                    0.897648954359644
                  ],
                  [
                    -95612.8863568104,
                    2374194.2182397903,
                    1.457648954359644
                  ],
                  [
                    -95612.8863568104,
                    2374125.9182397905,
                    1.457648954359644
                  ],
                  [
                    -95748.14635681041,
                    2374125.9182397905,
                    0.897648954359644
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:00:09+00:00",
            "end_time": "2018-09-08T03:41:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2350.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.59969722204457,
              71.3405504371797,
              0.887358091291916
            ],
            [
              -156.60020314935602,
              71.3448982960439,
              0.887358091291916
            ],
            [
              -156.5866682330778,
              71.34507629119945,
              2.807358091291916
            ],
            [
              -156.58616493394365,
              71.34072839244654,
              2.807358091291916
            ],
            [
              -156.59969722204457,
              71.3405504371797,
              0.887358091291916
            ]
          ]
        ]
      },
      "bbox": [
        -156.6002031,
        71.34055044,
        0.8873580913,
        -156.5861649,
        71.34507629,
        2.807358091
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:04Z",
        "pc:count": 1790177,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94965.6358,
            "count": 1790177,
            "maximum": -94709.6209,
            "minimum": -95205.7009,
            "name": "X",
            "position": 0,
            "stddev": 131.5249752,
            "variance": 17298.8191
          },
          {
            "average": 2373425.438,
            "count": 1790177,
            "maximum": 2373652.078,
            "minimum": 2373178.618,
            "name": "Y",
            "position": 1,
            "stddev": 132.0679718,
            "variance": 17441.94918
          },
          {
            "average": 1.277828782,
            "count": 1790177,
            "maximum": 2.807358091,
            "minimum": 0.8873580913,
            "name": "Z",
            "position": 2,
            "stddev": 0.2260387186,
            "variance": 0.05109350231
          },
          {
            "average": 18920.35341,
            "count": 1790177,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12338.35701,
            "variance": 152235053.8
          },
          {
            "average": 1,
            "count": 1790177,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1790177,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022302264,
            "count": 1790177,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951657,
            "variance": 0.2499951657
          },
          {
            "average": 0.0005859755767,
            "count": 1790177,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02419984579,
            "variance": 0.0005856325365
          },
          {
            "average": 5.94965023,
            "count": 1790177,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.693516267,
            "variance": 13.64206241
          },
          {
            "average": 0.4234798172,
            "count": 1790177,
            "maximum": 16.37400055,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.674958077,
            "variance": 75.25489764
          },
          {
            "average": 0.5146988259,
            "count": 1790177,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997840374,
            "variance": 0.249784084
          },
          {
            "average": 406.7127658,
            "count": 1790177,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8526109256,
            "variance": 0.7269453904
          },
          {
            "average": 220415438.2,
            "count": 1790177,
            "maximum": 220416684.7,
            "minimum": 220414402.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 487.9793442,
            "variance": 238123.8404
          },
          {
            "average": 0.5146988259,
            "count": 1790177,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997840374,
            "variance": 0.249784084
          },
          {
            "average": 0,
            "count": 1790177,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1790177,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1790177,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1492824453,
            "count": 1790177,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3563667601,
            "variance": 0.1269972677
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95205.7009,
          2373178.618,
          0.8873580913,
          -94709.6209,
          2373652.078,
          2.807358091
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95205.70090009534,
                2373178.6184163843,
                0.887358091291916
              ],
              [
                -95205.70090009534,
                2373652.0784163843,
                0.887358091291916
              ],
              [
                -94709.62090009535,
                2373652.0784163843,
                2.807358091291916
              ],
              [
                -94709.62090009535,
                2373178.6184163843,
                2.807358091291916
              ],
              [
                -95205.70090009534,
                2373178.6184163843,
                0.887358091291916
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:04+00:00",
        "end_time": "2018-09-08T04:00:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2350.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2350.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2350.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2350.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6002031,
            71.34055044,
            0.8873580913,
            -156.5861649,
            71.34507629,
            2.807358091
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.59969722204457,
                  71.3405504371797,
                  0.887358091291916
                ],
                [
                  -156.60020314935602,
                  71.3448982960439,
                  0.887358091291916
                ],
                [
                  -156.5866682330778,
                  71.34507629119945,
                  2.807358091291916
                ],
                [
                  -156.58616493394365,
                  71.34072839244654,
                  2.807358091291916
                ],
                [
                  -156.59969722204457,
                  71.3405504371797,
                  0.887358091291916
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2350.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2350.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:04Z",
            "pc:count": 1790177,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94965.6358,
                "count": 1790177,
                "maximum": -94709.6209,
                "minimum": -95205.7009,
                "name": "X",
                "position": 0,
                "stddev": 131.5249752,
                "variance": 17298.8191
              },
              {
                "average": 2373425.438,
                "count": 1790177,
                "maximum": 2373652.078,
                "minimum": 2373178.618,
                "name": "Y",
                "position": 1,
                "stddev": 132.0679718,
                "variance": 17441.94918
              },
              {
                "average": 1.277828782,
                "count": 1790177,
                "maximum": 2.807358091,
                "minimum": 0.8873580913,
                "name": "Z",
                "position": 2,
                "stddev": 0.2260387186,
                "variance": 0.05109350231
              },
              {
                "average": 18920.35341,
                "count": 1790177,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12338.35701,
                "variance": 152235053.8
              },
              {
                "average": 1,
                "count": 1790177,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1790177,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022302264,
                "count": 1790177,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951657,
                "variance": 0.2499951657
              },
              {
                "average": 0.0005859755767,
                "count": 1790177,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02419984579,
                "variance": 0.0005856325365
              },
              {
                "average": 5.94965023,
                "count": 1790177,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.693516267,
                "variance": 13.64206241
              },
              {
                "average": 0.4234798172,
                "count": 1790177,
                "maximum": 16.37400055,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.674958077,
                "variance": 75.25489764
              },
              {
                "average": 0.5146988259,
                "count": 1790177,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997840374,
                "variance": 0.249784084
              },
              {
                "average": 406.7127658,
                "count": 1790177,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8526109256,
                "variance": 0.7269453904
              },
              {
                "average": 220415438.2,
                "count": 1790177,
                "maximum": 220416684.7,
                "minimum": 220414402.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 487.9793442,
                "variance": 238123.8404
              },
              {
                "average": 0.5146988259,
                "count": 1790177,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997840374,
                "variance": 0.249784084
              },
              {
                "average": 0,
                "count": 1790177,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1790177,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1790177,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1492824453,
                "count": 1790177,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3563667601,
                "variance": 0.1269972677
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95205.7009,
              2373178.618,
              0.8873580913,
              -94709.6209,
              2373652.078,
              2.807358091
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95205.70090009534,
                    2373178.6184163843,
                    0.887358091291916
                  ],
                  [
                    -95205.70090009534,
                    2373652.0784163843,
                    0.887358091291916
                  ],
                  [
                    -94709.62090009535,
                    2373652.0784163843,
                    2.807358091291916
                  ],
                  [
                    -94709.62090009535,
                    2373178.6184163843,
                    2.807358091291916
                  ],
                  [
                    -95205.70090009534,
                    2373178.6184163843,
                    0.887358091291916
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:04+00:00",
            "end_time": "2018-09-08T04:00:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2227.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5895877904943,
              71.30358735441112,
              0.942190028536642
            ],
            [
              -156.59009070673258,
              71.3079323116084,
              0.942190028536642
            ],
            [
              -156.57657914907355,
              71.30810955505054,
              5.042190028536641
            ],
            [
              -156.57607885108584,
              71.30376455824427,
              5.042190028536641
            ],
            [
              -156.5895877904943,
              71.30358735441112,
              0.942190028536642
            ]
          ]
        ]
      },
      "bbox": [
        -156.5900907,
        71.30358735,
        0.9421900285,
        -156.5760789,
        71.30810956,
        5.042190029
      ],
      "properties": {
        "datetime": "2018-09-11T17:40:47Z",
        "pc:count": 3253946,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94782.96595,
            "count": 3253946,
            "maximum": -94496.43674,
            "minimum": -94992.47674,
            "name": "X",
            "position": 0,
            "stddev": 120.7916258,
            "variance": 14590.61686
          },
          {
            "average": 2369377.528,
            "count": 3253946,
            "maximum": 2369617.897,
            "minimum": 2369144.637,
            "name": "Y",
            "position": 1,
            "stddev": 130.405815,
            "variance": 17005.67659
          },
          {
            "average": 3.566294006,
            "count": 3253946,
            "maximum": 5.042190029,
            "minimum": 0.9421900285,
            "name": "Z",
            "position": 2,
            "stddev": 0.8329685747,
            "variance": 0.6938366464
          },
          {
            "average": 43379.7219,
            "count": 3253946,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12733.42289,
            "variance": 162140058.4
          },
          {
            "average": 1,
            "count": 3253946,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3253946,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5028417804,
            "count": 3253946,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499992001,
            "variance": 0.2499920011
          },
          {
            "average": 0.0005304328959,
            "count": 3253946,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02302502334,
            "variance": 0.0005301516998
          },
          {
            "average": 1.53775877,
            "count": 3253946,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.472300118,
            "variance": 2.167667637
          },
          {
            "average": -2.645326372,
            "count": 3253946,
            "maximum": 16.31399918,
            "minimum": -19.73399925,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.19552617,
            "variance": 103.9487539
          },
          {
            "average": 0.4632437047,
            "count": 3253946,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986472212,
            "variance": 0.2486490512
          },
          {
            "average": 425.0647451,
            "count": 3253946,
            "maximum": 455,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.57730423,
            "variance": 274.8070157
          },
          {
            "average": 220493618.6,
            "count": 3253946,
            "maximum": 220722847.2,
            "minimum": 220419517,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129474.2051,
            "variance": 16763569800.0
          },
          {
            "average": 0.4632437047,
            "count": 3253946,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986472212,
            "variance": 0.2486490512
          },
          {
            "average": 0,
            "count": 3253946,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3253946,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3253946,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1914404849,
            "count": 3253946,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3934349669,
            "variance": 0.1547910732
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94992.47674,
          2369144.637,
          0.9421900285,
          -94496.43674,
          2369617.897,
          5.042190029
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94992.47673856276,
                2369144.636834084,
                0.942190028536642
              ],
              [
                -94992.47673856276,
                2369617.896834084,
                0.942190028536642
              ],
              [
                -94496.43673856276,
                2369617.896834084,
                5.042190028536641
              ],
              [
                -94496.43673856276,
                2369144.636834084,
                5.042190028536641
              ],
              [
                -94992.47673856276,
                2369144.636834084,
                0.942190028536642
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:40:47+00:00",
        "end_time": "2018-09-08T05:25:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2227.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2227.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2227.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2227.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5900907,
            71.30358735,
            0.9421900285,
            -156.5760789,
            71.30810956,
            5.042190029
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5895877904943,
                  71.30358735441112,
                  0.942190028536642
                ],
                [
                  -156.59009070673258,
                  71.3079323116084,
                  0.942190028536642
                ],
                [
                  -156.57657914907355,
                  71.30810955505054,
                  5.042190028536641
                ],
                [
                  -156.57607885108584,
                  71.30376455824427,
                  5.042190028536641
                ],
                [
                  -156.5895877904943,
                  71.30358735441112,
                  0.942190028536642
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2227.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2227.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:40:47Z",
            "pc:count": 3253946,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94782.96595,
                "count": 3253946,
                "maximum": -94496.43674,
                "minimum": -94992.47674,
                "name": "X",
                "position": 0,
                "stddev": 120.7916258,
                "variance": 14590.61686
              },
              {
                "average": 2369377.528,
                "count": 3253946,
                "maximum": 2369617.897,
                "minimum": 2369144.637,
                "name": "Y",
                "position": 1,
                "stddev": 130.405815,
                "variance": 17005.67659
              },
              {
                "average": 3.566294006,
                "count": 3253946,
                "maximum": 5.042190029,
                "minimum": 0.9421900285,
                "name": "Z",
                "position": 2,
                "stddev": 0.8329685747,
                "variance": 0.6938366464
              },
              {
                "average": 43379.7219,
                "count": 3253946,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12733.42289,
                "variance": 162140058.4
              },
              {
                "average": 1,
                "count": 3253946,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3253946,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5028417804,
                "count": 3253946,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499992001,
                "variance": 0.2499920011
              },
              {
                "average": 0.0005304328959,
                "count": 3253946,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02302502334,
                "variance": 0.0005301516998
              },
              {
                "average": 1.53775877,
                "count": 3253946,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.472300118,
                "variance": 2.167667637
              },
              {
                "average": -2.645326372,
                "count": 3253946,
                "maximum": 16.31399918,
                "minimum": -19.73399925,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.19552617,
                "variance": 103.9487539
              },
              {
                "average": 0.4632437047,
                "count": 3253946,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986472212,
                "variance": 0.2486490512
              },
              {
                "average": 425.0647451,
                "count": 3253946,
                "maximum": 455,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.57730423,
                "variance": 274.8070157
              },
              {
                "average": 220493618.6,
                "count": 3253946,
                "maximum": 220722847.2,
                "minimum": 220419517,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129474.2051,
                "variance": 16763569800.0
              },
              {
                "average": 0.4632437047,
                "count": 3253946,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986472212,
                "variance": 0.2486490512
              },
              {
                "average": 0,
                "count": 3253946,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3253946,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3253946,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1914404849,
                "count": 3253946,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3934349669,
                "variance": 0.1547910732
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94992.47674,
              2369144.637,
              0.9421900285,
              -94496.43674,
              2369617.897,
              5.042190029
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94992.47673856276,
                    2369144.636834084,
                    0.942190028536642
                  ],
                  [
                    -94992.47673856276,
                    2369617.896834084,
                    0.942190028536642
                  ],
                  [
                    -94496.43673856276,
                    2369617.896834084,
                    5.042190028536641
                  ],
                  [
                    -94496.43673856276,
                    2369144.636834084,
                    5.042190028536641
                  ],
                  [
                    -94992.47673856276,
                    2369144.636834084,
                    0.942190028536642
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:40:47+00:00",
            "end_time": "2018-09-08T05:25:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2363.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6119045479685,
              71.34883827995178,
              0.839322665045233
            ],
            [
              -156.6122399751243,
              71.35170667519998,
              0.839322665045233
            ],
            [
              -156.59893028439714,
              71.35188248388509,
              1.499322665045234
            ],
            [
              -156.5985965627853,
              71.34901406263216,
              1.499322665045234
            ],
            [
              -156.6119045479685,
              71.34883827995178,
              0.839322665045233
            ]
          ]
        ]
      },
      "bbox": [
        -156.61224,
        71.34883828,
        0.839322665,
        -156.5985966,
        71.35188248,
        1.499322665
      ],
      "properties": {
        "datetime": "2018-09-08T04:12:01Z",
        "pc:count": 781180,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95338.6659,
            "count": 781180,
            "maximum": -95129.38757,
            "minimum": -95617.06757,
            "name": "X",
            "position": 0,
            "stddev": 132.4448386,
            "variance": 17541.63527
          },
          {
            "average": 2374214.971,
            "count": 781180,
            "maximum": 2374409.603,
            "minimum": 2374097.263,
            "name": "Y",
            "position": 1,
            "stddev": 69.00244875,
            "variance": 4761.337934
          },
          {
            "average": 1.16133562,
            "count": 781180,
            "maximum": 1.499322665,
            "minimum": 0.839322665,
            "name": "Z",
            "position": 2,
            "stddev": 0.07065720952,
            "variance": 0.004992441257
          },
          {
            "average": 13430.03208,
            "count": 781180,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10150.37029,
            "variance": 103030017.1
          },
          {
            "average": 1,
            "count": 781180,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 781180,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5101013851,
            "count": 781180,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998982716,
            "variance": 0.2498982819
          },
          {
            "average": 0.0008243938657,
            "count": 781180,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02870044067,
            "variance": 0.0008237152949
          },
          {
            "average": 7.205791239,
            "count": 781180,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.865491452,
            "variance": 8.21104126
          },
          {
            "average": -2.865621721,
            "count": 781180,
            "maximum": 16.3560009,
            "minimum": -13.69799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.451004291,
            "variance": 55.51746494
          },
          {
            "average": 0.4974602524,
            "count": 781180,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999938697,
            "variance": 0.2499938697
          },
          {
            "average": 404.3824868,
            "count": 781180,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7108784704,
            "variance": 0.5053481996
          },
          {
            "average": 220414130.6,
            "count": 781180,
            "maximum": 220415121.4,
            "minimum": 220413289.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 379.5418109,
            "variance": 144051.9863
          },
          {
            "average": 0.4974602524,
            "count": 781180,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999938697,
            "variance": 0.2499938697
          },
          {
            "average": 0,
            "count": 781180,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 781180,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 781180,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1104303746,
            "count": 781180,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3134256414,
            "variance": 0.09823563269
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95617.06757,
          2374097.263,
          0.839322665,
          -95129.38757,
          2374409.603,
          1.499322665
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95617.06756521066,
                2374097.2631445127,
                0.839322665045233
              ],
              [
                -95617.06756521066,
                2374409.6031445125,
                0.839322665045233
              ],
              [
                -95129.38756521067,
                2374409.6031445125,
                1.499322665045234
              ],
              [
                -95129.38756521067,
                2374097.2631445127,
                1.499322665045234
              ],
              [
                -95617.06756521066,
                2374097.2631445127,
                0.839322665045233
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:12:01+00:00",
        "end_time": "2018-09-08T03:41:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2363.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2363.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2363.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2363.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.61224,
            71.34883828,
            0.839322665,
            -156.5985966,
            71.35188248,
            1.499322665
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6119045479685,
                  71.34883827995178,
                  0.839322665045233
                ],
                [
                  -156.6122399751243,
                  71.35170667519998,
                  0.839322665045233
                ],
                [
                  -156.59893028439714,
                  71.35188248388509,
                  1.499322665045234
                ],
                [
                  -156.5985965627853,
                  71.34901406263216,
                  1.499322665045234
                ],
                [
                  -156.6119045479685,
                  71.34883827995178,
                  0.839322665045233
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2363.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2363.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:12:01Z",
            "pc:count": 781180,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95338.6659,
                "count": 781180,
                "maximum": -95129.38757,
                "minimum": -95617.06757,
                "name": "X",
                "position": 0,
                "stddev": 132.4448386,
                "variance": 17541.63527
              },
              {
                "average": 2374214.971,
                "count": 781180,
                "maximum": 2374409.603,
                "minimum": 2374097.263,
                "name": "Y",
                "position": 1,
                "stddev": 69.00244875,
                "variance": 4761.337934
              },
              {
                "average": 1.16133562,
                "count": 781180,
                "maximum": 1.499322665,
                "minimum": 0.839322665,
                "name": "Z",
                "position": 2,
                "stddev": 0.07065720952,
                "variance": 0.004992441257
              },
              {
                "average": 13430.03208,
                "count": 781180,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10150.37029,
                "variance": 103030017.1
              },
              {
                "average": 1,
                "count": 781180,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 781180,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5101013851,
                "count": 781180,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998982716,
                "variance": 0.2498982819
              },
              {
                "average": 0.0008243938657,
                "count": 781180,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02870044067,
                "variance": 0.0008237152949
              },
              {
                "average": 7.205791239,
                "count": 781180,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.865491452,
                "variance": 8.21104126
              },
              {
                "average": -2.865621721,
                "count": 781180,
                "maximum": 16.3560009,
                "minimum": -13.69799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.451004291,
                "variance": 55.51746494
              },
              {
                "average": 0.4974602524,
                "count": 781180,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999938697,
                "variance": 0.2499938697
              },
              {
                "average": 404.3824868,
                "count": 781180,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7108784704,
                "variance": 0.5053481996
              },
              {
                "average": 220414130.6,
                "count": 781180,
                "maximum": 220415121.4,
                "minimum": 220413289.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 379.5418109,
                "variance": 144051.9863
              },
              {
                "average": 0.4974602524,
                "count": 781180,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999938697,
                "variance": 0.2499938697
              },
              {
                "average": 0,
                "count": 781180,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 781180,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 781180,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1104303746,
                "count": 781180,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3134256414,
                "variance": 0.09823563269
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95617.06757,
              2374097.263,
              0.839322665,
              -95129.38757,
              2374409.603,
              1.499322665
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95617.06756521066,
                    2374097.2631445127,
                    0.839322665045233
                  ],
                  [
                    -95617.06756521066,
                    2374409.6031445125,
                    0.839322665045233
                  ],
                  [
                    -95129.38756521067,
                    2374409.6031445125,
                    1.499322665045234
                  ],
                  [
                    -95129.38756521067,
                    2374097.2631445127,
                    1.499322665045234
                  ],
                  [
                    -95617.06756521066,
                    2374097.2631445127,
                    0.839322665045233
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:12:01+00:00",
            "end_time": "2018-09-08T03:41:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2299.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69038006386972,
              71.32480684852706,
              -3.025793262743536
            ],
            [
              -156.6909032167439,
              71.3291536377272,
              -3.025793262743536
            ],
            [
              -156.67737965079203,
              71.32933782035975,
              20.374206737256465
            ],
            [
              -156.67685912139362,
              71.32499098993193,
              20.374206737256465
            ],
            [
              -156.69038006386972,
              71.32480684852706,
              -3.025793262743536
            ]
          ]
        ]
      },
      "bbox": [
        -156.6909032,
        71.32480685,
        -3.025793263,
        -156.6768591,
        71.32933782,
        20.37420674
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:56Z",
        "pc:count": 2485457,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98320.28249,
            "count": 2485457,
            "maximum": -98098.23188,
            "minimum": -98594.27188,
            "name": "X",
            "position": 0,
            "stddev": 134.806176,
            "variance": 18172.70508
          },
          {
            "average": 2371817.104,
            "count": 2485457,
            "maximum": 2372072.51,
            "minimum": 2371599.09,
            "name": "Y",
            "position": 1,
            "stddev": 128.2086908,
            "variance": 16437.46839
          },
          {
            "average": 3.182531914,
            "count": 2485457,
            "maximum": 20.37420674,
            "minimum": -3.025793263,
            "name": "Z",
            "position": 2,
            "stddev": 1.956534073,
            "variance": 3.828025577
          },
          {
            "average": 20213.82759,
            "count": 2485457,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10488.89347,
            "variance": 110016886.1
          },
          {
            "average": 1.011650171,
            "count": 2485457,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1099719058,
            "variance": 0.01209382006
          },
          {
            "average": 1.023298733,
            "count": 2485457,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1565082359,
            "variance": 0.02449482789
          },
          {
            "average": 0.5029437242,
            "count": 2485457,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499991435,
            "variance": 0.2499914351
          },
          {
            "average": 0.000451828376,
            "count": 2485457,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02125145663,
            "variance": 0.0004516244089
          },
          {
            "average": 3.344581701,
            "count": 2485457,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.228318358,
            "variance": 10.42203942
          },
          {
            "average": 0.9307858043,
            "count": 2485457,
            "maximum": 16.33200073,
            "minimum": -15.72599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.97868558,
            "variance": 99.57416591
          },
          {
            "average": 0.5598620294,
            "count": 2485457,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4964037032,
            "variance": 0.2464166366
          },
          {
            "average": 404.5320543,
            "count": 2485457,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9460804139,
            "variance": 0.8950681495
          },
          {
            "average": 220414217.2,
            "count": 2485457,
            "maximum": 220415056.7,
            "minimum": 220413355.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 531.5163591,
            "variance": 282509.64
          },
          {
            "average": 0.5598620294,
            "count": 2485457,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4964037032,
            "variance": 0.2464166366
          },
          {
            "average": 0,
            "count": 2485457,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2485457,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2485457,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2328702528,
            "count": 2485457,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4226603483,
            "variance": 0.1786417701
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98594.27188,
          2371599.09,
          -3.025793263,
          -98098.23188,
          2372072.51,
          20.37420674
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98594.27188139096,
                2371599.0902134646,
                -3.025793262743536
              ],
              [
                -98594.27188139096,
                2372072.5102134645,
                -3.025793262743536
              ],
              [
                -98098.23188139095,
                2372072.5102134645,
                20.374206737256465
              ],
              [
                -98098.23188139095,
                2371599.0902134646,
                20.374206737256465
              ],
              [
                -98594.27188139096,
                2371599.0902134646,
                -3.025793262743536
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:56+00:00",
        "end_time": "2018-09-08T03:42:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2299.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2299.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2299.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2299.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6909032,
            71.32480685,
            -3.025793263,
            -156.6768591,
            71.32933782,
            20.37420674
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69038006386972,
                  71.32480684852706,
                  -3.025793262743536
                ],
                [
                  -156.6909032167439,
                  71.3291536377272,
                  -3.025793262743536
                ],
                [
                  -156.67737965079203,
                  71.32933782035975,
                  20.374206737256465
                ],
                [
                  -156.67685912139362,
                  71.32499098993193,
                  20.374206737256465
                ],
                [
                  -156.69038006386972,
                  71.32480684852706,
                  -3.025793262743536
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2299.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2299.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:56Z",
            "pc:count": 2485457,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98320.28249,
                "count": 2485457,
                "maximum": -98098.23188,
                "minimum": -98594.27188,
                "name": "X",
                "position": 0,
                "stddev": 134.806176,
                "variance": 18172.70508
              },
              {
                "average": 2371817.104,
                "count": 2485457,
                "maximum": 2372072.51,
                "minimum": 2371599.09,
                "name": "Y",
                "position": 1,
                "stddev": 128.2086908,
                "variance": 16437.46839
              },
              {
                "average": 3.182531914,
                "count": 2485457,
                "maximum": 20.37420674,
                "minimum": -3.025793263,
                "name": "Z",
                "position": 2,
                "stddev": 1.956534073,
                "variance": 3.828025577
              },
              {
                "average": 20213.82759,
                "count": 2485457,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10488.89347,
                "variance": 110016886.1
              },
              {
                "average": 1.011650171,
                "count": 2485457,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1099719058,
                "variance": 0.01209382006
              },
              {
                "average": 1.023298733,
                "count": 2485457,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1565082359,
                "variance": 0.02449482789
              },
              {
                "average": 0.5029437242,
                "count": 2485457,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499991435,
                "variance": 0.2499914351
              },
              {
                "average": 0.000451828376,
                "count": 2485457,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02125145663,
                "variance": 0.0004516244089
              },
              {
                "average": 3.344581701,
                "count": 2485457,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.228318358,
                "variance": 10.42203942
              },
              {
                "average": 0.9307858043,
                "count": 2485457,
                "maximum": 16.33200073,
                "minimum": -15.72599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.97868558,
                "variance": 99.57416591
              },
              {
                "average": 0.5598620294,
                "count": 2485457,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4964037032,
                "variance": 0.2464166366
              },
              {
                "average": 404.5320543,
                "count": 2485457,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9460804139,
                "variance": 0.8950681495
              },
              {
                "average": 220414217.2,
                "count": 2485457,
                "maximum": 220415056.7,
                "minimum": 220413355.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 531.5163591,
                "variance": 282509.64
              },
              {
                "average": 0.5598620294,
                "count": 2485457,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4964037032,
                "variance": 0.2464166366
              },
              {
                "average": 0,
                "count": 2485457,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2485457,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2485457,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2328702528,
                "count": 2485457,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4226603483,
                "variance": 0.1786417701
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98594.27188,
              2371599.09,
              -3.025793263,
              -98098.23188,
              2372072.51,
              20.37420674
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98594.27188139096,
                    2371599.0902134646,
                    -3.025793262743536
                  ],
                  [
                    -98594.27188139096,
                    2372072.5102134645,
                    -3.025793262743536
                  ],
                  [
                    -98098.23188139095,
                    2372072.5102134645,
                    20.374206737256465
                  ],
                  [
                    -98098.23188139095,
                    2371599.0902134646,
                    20.374206737256465
                  ],
                  [
                    -98594.27188139096,
                    2371599.0902134646,
                    -3.025793262743536
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:56+00:00",
            "end_time": "2018-09-08T03:42:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2215.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74285168035274,
              71.30466963792489,
              1.4267179417942
            ],
            [
              -156.74338466352137,
              71.30901661096418,
              1.4267179417942
            ],
            [
              -156.72988077987418,
              71.30920426940247,
              20.0067179417942
            ],
            [
              -156.729350414306,
              71.30485725440457,
              20.0067179417942
            ],
            [
              -156.74285168035274,
              71.30466963792489,
              1.4267179417942
            ]
          ]
        ]
      },
      "bbox": [
        -156.7433847,
        71.30466964,
        1.426717942,
        -156.7293504,
        71.30920427,
        20.00671794
      ],
      "properties": {
        "datetime": "2018-09-08T04:20:53Z",
        "pc:count": 2282238,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100368.5789,
            "count": 2282238,
            "maximum": -100110.8234,
            "minimum": -100606.6034,
            "name": "X",
            "position": 0,
            "stddev": 127.6663572,
            "variance": 16298.69877
          },
          {
            "average": 2369723.131,
            "count": 2282238,
            "maximum": 2369961.56,
            "minimum": 2369488.04,
            "name": "Y",
            "position": 1,
            "stddev": 135.4630247,
            "variance": 18350.23105
          },
          {
            "average": 3.653467111,
            "count": 2282238,
            "maximum": 20.00671794,
            "minimum": 1.426717942,
            "name": "Z",
            "position": 2,
            "stddev": 1.233620421,
            "variance": 1.521819343
          },
          {
            "average": 36977.88133,
            "count": 2282238,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15228.55601,
            "variance": 231908918.1
          },
          {
            "average": 1.003078119,
            "count": 2282238,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05621975139,
            "variance": 0.003160660446
          },
          {
            "average": 1.006161496,
            "count": 2282238,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0800028487,
            "variance": 0.006400455801
          },
          {
            "average": 0.4969635069,
            "count": 2282238,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999908892,
            "variance": 0.2499908892
          },
          {
            "average": 0.0004968806934,
            "count": 2282238,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02228528709,
            "variance": 0.0004966340206
          },
          {
            "average": 3.29849779,
            "count": 2282238,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.328708645,
            "variance": 11.08030124
          },
          {
            "average": 0.9264079835,
            "count": 2282238,
            "maximum": 16.30800056,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.517152909,
            "variance": 90.5761995
          },
          {
            "average": 0.4570894885,
            "count": 2282238,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981553942,
            "variance": 0.2481587967
          },
          {
            "average": 405.4378636,
            "count": 2282238,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8778093301,
            "variance": 0.7705492201
          },
          {
            "average": 220414722.3,
            "count": 2282238,
            "maximum": 220415653.5,
            "minimum": 220413864.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 499.3594579,
            "variance": 249359.8682
          },
          {
            "average": 0.4570894885,
            "count": 2282238,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981553942,
            "variance": 0.2481587967
          },
          {
            "average": 0,
            "count": 2282238,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2282238,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2282238,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1731147234,
            "count": 2282238,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.378346506,
            "variance": 0.1431460786
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100606.6034,
          2369488.04,
          1.426717942,
          -100110.8234,
          2369961.56,
          20.00671794
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100606.60341287784,
                2369488.0403505545,
                1.4267179417942
              ],
              [
                -100606.60341287784,
                2369961.560350554,
                1.4267179417942
              ],
              [
                -100110.82341287784,
                2369961.560350554,
                20.0067179417942
              ],
              [
                -100110.82341287784,
                2369488.0403505545,
                20.0067179417942
              ],
              [
                -100606.60341287784,
                2369488.0403505545,
                1.4267179417942
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:20:53+00:00",
        "end_time": "2018-09-08T03:51:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2215.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2215.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2215.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2215.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7433847,
            71.30466964,
            1.426717942,
            -156.7293504,
            71.30920427,
            20.00671794
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74285168035274,
                  71.30466963792489,
                  1.4267179417942
                ],
                [
                  -156.74338466352137,
                  71.30901661096418,
                  1.4267179417942
                ],
                [
                  -156.72988077987418,
                  71.30920426940247,
                  20.0067179417942
                ],
                [
                  -156.729350414306,
                  71.30485725440457,
                  20.0067179417942
                ],
                [
                  -156.74285168035274,
                  71.30466963792489,
                  1.4267179417942
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2215.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2215.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:20:53Z",
            "pc:count": 2282238,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100368.5789,
                "count": 2282238,
                "maximum": -100110.8234,
                "minimum": -100606.6034,
                "name": "X",
                "position": 0,
                "stddev": 127.6663572,
                "variance": 16298.69877
              },
              {
                "average": 2369723.131,
                "count": 2282238,
                "maximum": 2369961.56,
                "minimum": 2369488.04,
                "name": "Y",
                "position": 1,
                "stddev": 135.4630247,
                "variance": 18350.23105
              },
              {
                "average": 3.653467111,
                "count": 2282238,
                "maximum": 20.00671794,
                "minimum": 1.426717942,
                "name": "Z",
                "position": 2,
                "stddev": 1.233620421,
                "variance": 1.521819343
              },
              {
                "average": 36977.88133,
                "count": 2282238,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15228.55601,
                "variance": 231908918.1
              },
              {
                "average": 1.003078119,
                "count": 2282238,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05621975139,
                "variance": 0.003160660446
              },
              {
                "average": 1.006161496,
                "count": 2282238,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0800028487,
                "variance": 0.006400455801
              },
              {
                "average": 0.4969635069,
                "count": 2282238,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999908892,
                "variance": 0.2499908892
              },
              {
                "average": 0.0004968806934,
                "count": 2282238,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02228528709,
                "variance": 0.0004966340206
              },
              {
                "average": 3.29849779,
                "count": 2282238,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.328708645,
                "variance": 11.08030124
              },
              {
                "average": 0.9264079835,
                "count": 2282238,
                "maximum": 16.30800056,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.517152909,
                "variance": 90.5761995
              },
              {
                "average": 0.4570894885,
                "count": 2282238,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981553942,
                "variance": 0.2481587967
              },
              {
                "average": 405.4378636,
                "count": 2282238,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8778093301,
                "variance": 0.7705492201
              },
              {
                "average": 220414722.3,
                "count": 2282238,
                "maximum": 220415653.5,
                "minimum": 220413864.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 499.3594579,
                "variance": 249359.8682
              },
              {
                "average": 0.4570894885,
                "count": 2282238,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981553942,
                "variance": 0.2481587967
              },
              {
                "average": 0,
                "count": 2282238,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2282238,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2282238,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1731147234,
                "count": 2282238,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.378346506,
                "variance": 0.1431460786
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100606.6034,
              2369488.04,
              1.426717942,
              -100110.8234,
              2369961.56,
              20.00671794
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100606.60341287784,
                    2369488.0403505545,
                    1.4267179417942
                  ],
                  [
                    -100606.60341287784,
                    2369961.560350554,
                    1.4267179417942
                  ],
                  [
                    -100110.82341287784,
                    2369961.560350554,
                    20.0067179417942
                  ],
                  [
                    -100110.82341287784,
                    2369488.0403505545,
                    20.0067179417942
                  ],
                  [
                    -100606.60341287784,
                    2369488.0403505545,
                    1.4267179417942
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:20:53+00:00",
            "end_time": "2018-09-08T03:51:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2268.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7164920961663,
              71.31678823153447,
              -0.978653931110173
            ],
            [
              -156.7170202906513,
              71.32113599981918,
              -0.978653931110173
            ],
            [
              -156.703507236993,
              71.32132188883843,
              43.32134606888983
            ],
            [
              -156.70298166365419,
              71.316974078954,
              43.32134606888983
            ],
            [
              -156.7164920961663,
              71.31678823153447,
              -0.978653931110173
            ]
          ]
        ]
      },
      "bbox": [
        -156.7170203,
        71.31678823,
        -0.9786539311,
        -156.7029817,
        71.32132189,
        43.32134607
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:34Z",
        "pc:count": 2295186,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99323.31482,
            "count": 2295186,
            "maximum": -99090.51254,
            "minimum": -99586.35254,
            "name": "X",
            "position": 0,
            "stddev": 134.1736287,
            "variance": 18002.56265
          },
          {
            "average": 2370995.39,
            "count": 2295186,
            "maximum": 2371239.686,
            "minimum": 2370766.126,
            "name": "Y",
            "position": 1,
            "stddev": 126.6056355,
            "variance": 16028.98694
          },
          {
            "average": 2.002197765,
            "count": 2295186,
            "maximum": 43.32134607,
            "minimum": -0.9786539311,
            "name": "Z",
            "position": 2,
            "stddev": 1.138873584,
            "variance": 1.297033041
          },
          {
            "average": 21463.89077,
            "count": 2295186,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11389.11379,
            "variance": 129711912.9
          },
          {
            "average": 1.005035757,
            "count": 2295186,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07187146933,
            "variance": 0.005165508103
          },
          {
            "average": 1.010050602,
            "count": 2295186,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1020278635,
            "variance": 0.01040968494
          },
          {
            "average": 0.5035888159,
            "count": 2295186,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999872292,
            "variance": 0.2499872293
          },
          {
            "average": 0.0005363399742,
            "count": 2295186,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02315280862,
            "variance": 0.0005360525472
          },
          {
            "average": 3.934914643,
            "count": 2295186,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.650022214,
            "variance": 13.32266216
          },
          {
            "average": 0.2562707108,
            "count": 2295186,
            "maximum": 16.33200073,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.560451419,
            "variance": 91.40223134
          },
          {
            "average": 0.5484091485,
            "count": 2295186,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4976511451,
            "variance": 0.2476566622
          },
          {
            "average": 404.5534432,
            "count": 2295186,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8985468026,
            "variance": 0.8073863565
          },
          {
            "average": 220414225.1,
            "count": 2295186,
            "maximum": 220415034.9,
            "minimum": 220413377.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 503.5457841,
            "variance": 253558.3566
          },
          {
            "average": 0.5484091485,
            "count": 2295186,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4976511451,
            "variance": 0.2476566622
          },
          {
            "average": 0,
            "count": 2295186,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2295186,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2295186,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2055737531,
            "count": 2295186,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4041203487,
            "variance": 0.1633132563
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99586.35254,
          2370766.126,
          -0.9786539311,
          -99090.51254,
          2371239.686,
          43.32134607
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99586.3525397904,
                2370766.126077371,
                -0.978653931110173
              ],
              [
                -99586.3525397904,
                2371239.686077371,
                -0.978653931110173
              ],
              [
                -99090.5125397904,
                2371239.686077371,
                43.32134606888983
              ],
              [
                -99090.5125397904,
                2370766.126077371,
                43.32134606888983
              ],
              [
                -99586.3525397904,
                2370766.126077371,
                -0.978653931110173
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:34+00:00",
        "end_time": "2018-09-08T03:42:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2268.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2268.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2268.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2268.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7170203,
            71.31678823,
            -0.9786539311,
            -156.7029817,
            71.32132189,
            43.32134607
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7164920961663,
                  71.31678823153447,
                  -0.978653931110173
                ],
                [
                  -156.7170202906513,
                  71.32113599981918,
                  -0.978653931110173
                ],
                [
                  -156.703507236993,
                  71.32132188883843,
                  43.32134606888983
                ],
                [
                  -156.70298166365419,
                  71.316974078954,
                  43.32134606888983
                ],
                [
                  -156.7164920961663,
                  71.31678823153447,
                  -0.978653931110173
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2268.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2268.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:34Z",
            "pc:count": 2295186,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99323.31482,
                "count": 2295186,
                "maximum": -99090.51254,
                "minimum": -99586.35254,
                "name": "X",
                "position": 0,
                "stddev": 134.1736287,
                "variance": 18002.56265
              },
              {
                "average": 2370995.39,
                "count": 2295186,
                "maximum": 2371239.686,
                "minimum": 2370766.126,
                "name": "Y",
                "position": 1,
                "stddev": 126.6056355,
                "variance": 16028.98694
              },
              {
                "average": 2.002197765,
                "count": 2295186,
                "maximum": 43.32134607,
                "minimum": -0.9786539311,
                "name": "Z",
                "position": 2,
                "stddev": 1.138873584,
                "variance": 1.297033041
              },
              {
                "average": 21463.89077,
                "count": 2295186,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11389.11379,
                "variance": 129711912.9
              },
              {
                "average": 1.005035757,
                "count": 2295186,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07187146933,
                "variance": 0.005165508103
              },
              {
                "average": 1.010050602,
                "count": 2295186,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1020278635,
                "variance": 0.01040968494
              },
              {
                "average": 0.5035888159,
                "count": 2295186,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999872292,
                "variance": 0.2499872293
              },
              {
                "average": 0.0005363399742,
                "count": 2295186,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02315280862,
                "variance": 0.0005360525472
              },
              {
                "average": 3.934914643,
                "count": 2295186,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.650022214,
                "variance": 13.32266216
              },
              {
                "average": 0.2562707108,
                "count": 2295186,
                "maximum": 16.33200073,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.560451419,
                "variance": 91.40223134
              },
              {
                "average": 0.5484091485,
                "count": 2295186,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4976511451,
                "variance": 0.2476566622
              },
              {
                "average": 404.5534432,
                "count": 2295186,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8985468026,
                "variance": 0.8073863565
              },
              {
                "average": 220414225.1,
                "count": 2295186,
                "maximum": 220415034.9,
                "minimum": 220413377.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 503.5457841,
                "variance": 253558.3566
              },
              {
                "average": 0.5484091485,
                "count": 2295186,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4976511451,
                "variance": 0.2476566622
              },
              {
                "average": 0,
                "count": 2295186,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2295186,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2295186,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2055737531,
                "count": 2295186,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4041203487,
                "variance": 0.1633132563
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99586.35254,
              2370766.126,
              -0.9786539311,
              -99090.51254,
              2371239.686,
              43.32134607
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99586.3525397904,
                    2370766.126077371,
                    -0.978653931110173
                  ],
                  [
                    -99586.3525397904,
                    2371239.686077371,
                    -0.978653931110173
                  ],
                  [
                    -99090.5125397904,
                    2371239.686077371,
                    43.32134606888983
                  ],
                  [
                    -99090.5125397904,
                    2370766.126077371,
                    43.32134606888983
                  ],
                  [
                    -99586.3525397904,
                    2370766.126077371,
                    -0.978653931110173
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:34+00:00",
            "end_time": "2018-09-08T03:42:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2355.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6249993461928,
              71.34483521420789,
              0.849400402794416
            ],
            [
              -156.62548807936335,
              71.34899414011186,
              0.849400402794416
            ],
            [
              -156.61194815557505,
              71.34917391083306,
              93.44940040279442
            ],
            [
              -156.61146193764134,
              71.3450149463836,
              93.44940040279442
            ],
            [
              -156.6249993461928,
              71.34483521420789,
              0.849400402794416
            ]
          ]
        ]
      },
      "bbox": [
        -156.6254881,
        71.34483521,
        0.8494004028,
        -156.6114619,
        71.34917391,
        93.4494004
      ],
      "properties": {
        "datetime": "2018-09-08T04:11:50Z",
        "pc:count": 1555416,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95845.06034,
            "count": 1555416,
            "maximum": -95617.22722,
            "minimum": -96113.40722,
            "name": "X",
            "position": 0,
            "stddev": 133.5046989,
            "variance": 17823.50462
          },
          {
            "average": 2373889.046,
            "count": 1555416,
            "maximum": 2374133.817,
            "minimum": 2373680.937,
            "name": "Y",
            "position": 1,
            "stddev": 117.0942824,
            "variance": 13711.07097
          },
          {
            "average": 1.166988694,
            "count": 1555416,
            "maximum": 93.4494004,
            "minimum": 0.8494004028,
            "name": "Z",
            "position": 2,
            "stddev": 0.2241872997,
            "variance": 0.05025994534
          },
          {
            "average": 14196.65744,
            "count": 1555416,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10720.71144,
            "variance": 114933653.8
          },
          {
            "average": 1.000003857,
            "count": 1555416,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001964045959,
            "variance": 3.857476529e-06
          },
          {
            "average": 1.000007715,
            "count": 1555416,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002777575075,
            "variance": 7.714923297e-06
          },
          {
            "average": 0.5076416856,
            "count": 1555416,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999417619,
            "variance": 0.2499417653
          },
          {
            "average": 0.0005297618129,
            "count": 1555416,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02301046514,
            "variance": 0.0005294815057
          },
          {
            "average": 7.385661456,
            "count": 1555416,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.766847901,
            "variance": 7.655447309
          },
          {
            "average": -2.376404558,
            "count": 1555416,
            "maximum": 16.3920002,
            "minimum": -15.91800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.703284115,
            "variance": 59.34058615
          },
          {
            "average": 0.4926964876,
            "count": 1555416,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999468166,
            "variance": 0.2499468194
          },
          {
            "average": 404.3211797,
            "count": 1555416,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7214672884,
            "variance": 0.5205150483
          },
          {
            "average": 220414091.1,
            "count": 1555416,
            "maximum": 220415110.7,
            "minimum": 220413299.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 388.3720775,
            "variance": 150832.8706
          },
          {
            "average": 0.4926964876,
            "count": 1555416,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999468166,
            "variance": 0.2499468194
          },
          {
            "average": 0,
            "count": 1555416,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1555416,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1555416,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06947851893,
            "count": 1555416,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.254266191,
            "variance": 0.0646512959
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96113.40722,
          2373680.937,
          0.8494004028,
          -95617.22722,
          2374133.817,
          93.4494004
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96113.4072162954,
                2373680.936637784,
                0.849400402794416
              ],
              [
                -96113.4072162954,
                2374133.816637784,
                0.849400402794416
              ],
              [
                -95617.2272162954,
                2374133.816637784,
                93.44940040279442
              ],
              [
                -95617.2272162954,
                2373680.936637784,
                93.44940040279442
              ],
              [
                -96113.4072162954,
                2373680.936637784,
                0.849400402794416
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:11:50+00:00",
        "end_time": "2018-09-08T03:41:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2355.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2355.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2355.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2355.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6254881,
            71.34483521,
            0.8494004028,
            -156.6114619,
            71.34917391,
            93.4494004
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6249993461928,
                  71.34483521420789,
                  0.849400402794416
                ],
                [
                  -156.62548807936335,
                  71.34899414011186,
                  0.849400402794416
                ],
                [
                  -156.61194815557505,
                  71.34917391083306,
                  93.44940040279442
                ],
                [
                  -156.61146193764134,
                  71.3450149463836,
                  93.44940040279442
                ],
                [
                  -156.6249993461928,
                  71.34483521420789,
                  0.849400402794416
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2355.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2355.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:11:50Z",
            "pc:count": 1555416,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95845.06034,
                "count": 1555416,
                "maximum": -95617.22722,
                "minimum": -96113.40722,
                "name": "X",
                "position": 0,
                "stddev": 133.5046989,
                "variance": 17823.50462
              },
              {
                "average": 2373889.046,
                "count": 1555416,
                "maximum": 2374133.817,
                "minimum": 2373680.937,
                "name": "Y",
                "position": 1,
                "stddev": 117.0942824,
                "variance": 13711.07097
              },
              {
                "average": 1.166988694,
                "count": 1555416,
                "maximum": 93.4494004,
                "minimum": 0.8494004028,
                "name": "Z",
                "position": 2,
                "stddev": 0.2241872997,
                "variance": 0.05025994534
              },
              {
                "average": 14196.65744,
                "count": 1555416,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10720.71144,
                "variance": 114933653.8
              },
              {
                "average": 1.000003857,
                "count": 1555416,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001964045959,
                "variance": 3.857476529e-06
              },
              {
                "average": 1.000007715,
                "count": 1555416,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002777575075,
                "variance": 7.714923297e-06
              },
              {
                "average": 0.5076416856,
                "count": 1555416,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999417619,
                "variance": 0.2499417653
              },
              {
                "average": 0.0005297618129,
                "count": 1555416,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02301046514,
                "variance": 0.0005294815057
              },
              {
                "average": 7.385661456,
                "count": 1555416,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.766847901,
                "variance": 7.655447309
              },
              {
                "average": -2.376404558,
                "count": 1555416,
                "maximum": 16.3920002,
                "minimum": -15.91800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.703284115,
                "variance": 59.34058615
              },
              {
                "average": 0.4926964876,
                "count": 1555416,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999468166,
                "variance": 0.2499468194
              },
              {
                "average": 404.3211797,
                "count": 1555416,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7214672884,
                "variance": 0.5205150483
              },
              {
                "average": 220414091.1,
                "count": 1555416,
                "maximum": 220415110.7,
                "minimum": 220413299.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 388.3720775,
                "variance": 150832.8706
              },
              {
                "average": 0.4926964876,
                "count": 1555416,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999468166,
                "variance": 0.2499468194
              },
              {
                "average": 0,
                "count": 1555416,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1555416,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1555416,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06947851893,
                "count": 1555416,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.254266191,
                "variance": 0.0646512959
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96113.40722,
              2373680.937,
              0.8494004028,
              -95617.22722,
              2374133.817,
              93.4494004
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96113.4072162954,
                    2373680.936637784,
                    0.849400402794416
                  ],
                  [
                    -96113.4072162954,
                    2374133.816637784,
                    0.849400402794416
                  ],
                  [
                    -95617.2272162954,
                    2374133.816637784,
                    93.44940040279442
                  ],
                  [
                    -95617.2272162954,
                    2373680.936637784,
                    93.44940040279442
                  ],
                  [
                    -96113.4072162954,
                    2373680.936637784,
                    0.849400402794416
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:11:50+00:00",
            "end_time": "2018-09-08T03:41:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2307.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58809922800782,
              71.324083851277,
              3.084947058003354
            ],
            [
              -156.58860080615045,
              71.32841637729788,
              3.084947058003354
            ],
            [
              -156.575072499469,
              71.32859359975714,
              4.324947058003354
            ],
            [
              -156.57457353735862,
              71.32426103419839,
              4.324947058003354
            ],
            [
              -156.58809922800782,
              71.324083851277,
              3.084947058003354
            ]
          ]
        ]
      },
      "bbox": [
        -156.5886008,
        71.32408385,
        3.084947058,
        -156.5745735,
        71.3285936,
        4.324947058
      ],
      "properties": {
        "datetime": "2018-09-08T05:15:24Z",
        "pc:count": 2849624,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94621.6412,
            "count": 2849624,
            "maximum": -94354.7901,
            "minimum": -94850.9901,
            "name": "X",
            "position": 0,
            "stddev": 131.6081327,
            "variance": 17320.70059
          },
          {
            "average": 2371619.066,
            "count": 2849624,
            "maximum": 2371843.348,
            "minimum": 2371371.508,
            "name": "Y",
            "position": 1,
            "stddev": 130.1802559,
            "variance": 16946.89903
          },
          {
            "average": 3.447407891,
            "count": 2849624,
            "maximum": 4.324947058,
            "minimum": 3.084947058,
            "name": "Z",
            "position": 2,
            "stddev": 0.223647285,
            "variance": 0.05001810809
          },
          {
            "average": 28984.07028,
            "count": 2849624,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14864.03487,
            "variance": 220939532.6
          },
          {
            "average": 1,
            "count": 2849624,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2849624,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4979944723,
            "count": 2849624,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960656,
            "variance": 0.2499960656
          },
          {
            "average": 0.0004232137292,
            "count": 2849624,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02056780902,
            "variance": 0.0004230347678
          },
          {
            "average": 2.281286584,
            "count": 2849624,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.65639387,
            "variance": 7.056428392
          },
          {
            "average": 0.6566851187,
            "count": 2849624,
            "maximum": 16.49399948,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.786692216,
            "variance": 95.77934453
          },
          {
            "average": 0.4882040578,
            "count": 2849624,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998609241,
            "variance": 0.2498609434
          },
          {
            "average": 411.1447826,
            "count": 2849624,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8455600686,
            "variance": 0.7149718296
          },
          {
            "average": 220417953.4,
            "count": 2849624,
            "maximum": 220418924.3,
            "minimum": 220416698.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 473.4184973,
            "variance": 224125.0736
          },
          {
            "average": 0.4882040578,
            "count": 2849624,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998609241,
            "variance": 0.2498609434
          },
          {
            "average": 0,
            "count": 2849624,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2849624,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2849624,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1815664102,
            "count": 2849624,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3854868364,
            "variance": 0.148600101
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94850.9901,
          2371371.508,
          3.084947058,
          -94354.7901,
          2371843.348,
          4.324947058
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94850.99009927758,
                2371371.5078269807,
                3.084947058003354
              ],
              [
                -94850.99009927758,
                2371843.3478269805,
                3.084947058003354
              ],
              [
                -94354.79009927757,
                2371843.3478269805,
                4.324947058003354
              ],
              [
                -94354.79009927757,
                2371371.5078269807,
                4.324947058003354
              ],
              [
                -94850.99009927758,
                2371371.5078269807,
                3.084947058003354
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:15:24+00:00",
        "end_time": "2018-09-08T04:38:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2307.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2307.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2307.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2307.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5886008,
            71.32408385,
            3.084947058,
            -156.5745735,
            71.3285936,
            4.324947058
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58809922800782,
                  71.324083851277,
                  3.084947058003354
                ],
                [
                  -156.58860080615045,
                  71.32841637729788,
                  3.084947058003354
                ],
                [
                  -156.575072499469,
                  71.32859359975714,
                  4.324947058003354
                ],
                [
                  -156.57457353735862,
                  71.32426103419839,
                  4.324947058003354
                ],
                [
                  -156.58809922800782,
                  71.324083851277,
                  3.084947058003354
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2307.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2307.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:15:24Z",
            "pc:count": 2849624,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94621.6412,
                "count": 2849624,
                "maximum": -94354.7901,
                "minimum": -94850.9901,
                "name": "X",
                "position": 0,
                "stddev": 131.6081327,
                "variance": 17320.70059
              },
              {
                "average": 2371619.066,
                "count": 2849624,
                "maximum": 2371843.348,
                "minimum": 2371371.508,
                "name": "Y",
                "position": 1,
                "stddev": 130.1802559,
                "variance": 16946.89903
              },
              {
                "average": 3.447407891,
                "count": 2849624,
                "maximum": 4.324947058,
                "minimum": 3.084947058,
                "name": "Z",
                "position": 2,
                "stddev": 0.223647285,
                "variance": 0.05001810809
              },
              {
                "average": 28984.07028,
                "count": 2849624,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14864.03487,
                "variance": 220939532.6
              },
              {
                "average": 1,
                "count": 2849624,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2849624,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4979944723,
                "count": 2849624,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960656,
                "variance": 0.2499960656
              },
              {
                "average": 0.0004232137292,
                "count": 2849624,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02056780902,
                "variance": 0.0004230347678
              },
              {
                "average": 2.281286584,
                "count": 2849624,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.65639387,
                "variance": 7.056428392
              },
              {
                "average": 0.6566851187,
                "count": 2849624,
                "maximum": 16.49399948,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.786692216,
                "variance": 95.77934453
              },
              {
                "average": 0.4882040578,
                "count": 2849624,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998609241,
                "variance": 0.2498609434
              },
              {
                "average": 411.1447826,
                "count": 2849624,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8455600686,
                "variance": 0.7149718296
              },
              {
                "average": 220417953.4,
                "count": 2849624,
                "maximum": 220418924.3,
                "minimum": 220416698.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 473.4184973,
                "variance": 224125.0736
              },
              {
                "average": 0.4882040578,
                "count": 2849624,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998609241,
                "variance": 0.2498609434
              },
              {
                "average": 0,
                "count": 2849624,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2849624,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2849624,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1815664102,
                "count": 2849624,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3854868364,
                "variance": 0.148600101
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94850.9901,
              2371371.508,
              3.084947058,
              -94354.7901,
              2371843.348,
              4.324947058
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94850.99009927758,
                    2371371.5078269807,
                    3.084947058003354
                  ],
                  [
                    -94850.99009927758,
                    2371843.3478269805,
                    3.084947058003354
                  ],
                  [
                    -94354.79009927757,
                    2371843.3478269805,
                    4.324947058003354
                  ],
                  [
                    -94354.79009927757,
                    2371371.5078269807,
                    4.324947058003354
                  ],
                  [
                    -94850.99009927758,
                    2371371.5078269807,
                    3.084947058003354
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:15:24+00:00",
            "end_time": "2018-09-08T04:38:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2356.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61219904450016,
              71.34474192536004,
              -4.354082883064052
            ],
            [
              -156.61270745591787,
              71.34908950899569,
              -4.354082883064052
            ],
            [
              -156.5991722840627,
              71.34926833818062,
              9.145917116935948
            ],
            [
              -156.5986665010844,
              71.34492071446213,
              9.145917116935948
            ],
            [
              -156.61219904450016,
              71.34474192536004,
              -4.354082883064052
            ]
          ]
        ]
      },
      "bbox": [
        -156.6127075,
        71.34474193,
        -4.354082883,
        -156.5986665,
        71.34926834,
        9.145917117
      ],
      "properties": {
        "datetime": "2018-09-08T04:18:59Z",
        "pc:count": 2121553,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95393.00939,
            "count": 2121553,
            "maximum": -95149.37026,
            "minimum": -95645.37026,
            "name": "X",
            "position": 0,
            "stddev": 135.3612864,
            "variance": 18322.67786
          },
          {
            "average": 2373867.085,
            "count": 2121553,
            "maximum": 2374125.734,
            "minimum": 2373652.314,
            "name": "Y",
            "position": 1,
            "stddev": 131.0185029,
            "variance": 17165.8481
          },
          {
            "average": 2.049983713,
            "count": 2121553,
            "maximum": 9.145917117,
            "minimum": -4.354082883,
            "name": "Z",
            "position": 2,
            "stddev": 1.124431382,
            "variance": 1.264345932
          },
          {
            "average": 21110.63637,
            "count": 2121553,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15134.41591,
            "variance": 229050545
          },
          {
            "average": 1.00096863,
            "count": 2121553,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03127398335,
            "variance": 0.0009780620344
          },
          {
            "average": 1.001938674,
            "count": 2121553,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0443398909,
            "variance": 0.001966025925
          },
          {
            "average": 0.5010329697,
            "count": 2121553,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999990508,
            "variance": 0.2499990508
          },
          {
            "average": 0.000522730283,
            "count": 2121553,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02285732448,
            "variance": 0.0005224572823
          },
          {
            "average": 4.74733886,
            "count": 2121553,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.679280939,
            "variance": 13.53710823
          },
          {
            "average": -0.7939532335,
            "count": 2121553,
            "maximum": 16.30200005,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.82819221,
            "variance": 77.9369777
          },
          {
            "average": 0.4612498486,
            "count": 2121553,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984962817,
            "variance": 0.2484985429
          },
          {
            "average": 405.0544177,
            "count": 2121553,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8211528301,
            "variance": 0.6742919704
          },
          {
            "average": 220414506.4,
            "count": 2121553,
            "maximum": 220415539.1,
            "minimum": 220413297.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 463.0530763,
            "variance": 214418.1515
          },
          {
            "average": 0.4612498486,
            "count": 2121553,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984962817,
            "variance": 0.2484985429
          },
          {
            "average": 0,
            "count": 2121553,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2121553,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2121553,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1477413008,
            "count": 2121553,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3548434418,
            "variance": 0.1259138682
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95645.37026,
          2373652.314,
          -4.354082883,
          -95149.37026,
          2374125.734,
          9.145917117
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95645.37025986594,
                2373652.313634478,
                -4.354082883064052
              ],
              [
                -95645.37025986594,
                2374125.733634478,
                -4.354082883064052
              ],
              [
                -95149.37025986594,
                2374125.733634478,
                9.145917116935948
              ],
              [
                -95149.37025986594,
                2373652.313634478,
                9.145917116935948
              ],
              [
                -95645.37025986594,
                2373652.313634478,
                -4.354082883064052
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:18:59+00:00",
        "end_time": "2018-09-08T03:41:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2356.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2356.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2356.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2356.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6127075,
            71.34474193,
            -4.354082883,
            -156.5986665,
            71.34926834,
            9.145917117
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61219904450016,
                  71.34474192536004,
                  -4.354082883064052
                ],
                [
                  -156.61270745591787,
                  71.34908950899569,
                  -4.354082883064052
                ],
                [
                  -156.5991722840627,
                  71.34926833818062,
                  9.145917116935948
                ],
                [
                  -156.5986665010844,
                  71.34492071446213,
                  9.145917116935948
                ],
                [
                  -156.61219904450016,
                  71.34474192536004,
                  -4.354082883064052
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2356.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2356.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:18:59Z",
            "pc:count": 2121553,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95393.00939,
                "count": 2121553,
                "maximum": -95149.37026,
                "minimum": -95645.37026,
                "name": "X",
                "position": 0,
                "stddev": 135.3612864,
                "variance": 18322.67786
              },
              {
                "average": 2373867.085,
                "count": 2121553,
                "maximum": 2374125.734,
                "minimum": 2373652.314,
                "name": "Y",
                "position": 1,
                "stddev": 131.0185029,
                "variance": 17165.8481
              },
              {
                "average": 2.049983713,
                "count": 2121553,
                "maximum": 9.145917117,
                "minimum": -4.354082883,
                "name": "Z",
                "position": 2,
                "stddev": 1.124431382,
                "variance": 1.264345932
              },
              {
                "average": 21110.63637,
                "count": 2121553,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15134.41591,
                "variance": 229050545
              },
              {
                "average": 1.00096863,
                "count": 2121553,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03127398335,
                "variance": 0.0009780620344
              },
              {
                "average": 1.001938674,
                "count": 2121553,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0443398909,
                "variance": 0.001966025925
              },
              {
                "average": 0.5010329697,
                "count": 2121553,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999990508,
                "variance": 0.2499990508
              },
              {
                "average": 0.000522730283,
                "count": 2121553,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02285732448,
                "variance": 0.0005224572823
              },
              {
                "average": 4.74733886,
                "count": 2121553,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.679280939,
                "variance": 13.53710823
              },
              {
                "average": -0.7939532335,
                "count": 2121553,
                "maximum": 16.30200005,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.82819221,
                "variance": 77.9369777
              },
              {
                "average": 0.4612498486,
                "count": 2121553,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984962817,
                "variance": 0.2484985429
              },
              {
                "average": 405.0544177,
                "count": 2121553,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8211528301,
                "variance": 0.6742919704
              },
              {
                "average": 220414506.4,
                "count": 2121553,
                "maximum": 220415539.1,
                "minimum": 220413297.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 463.0530763,
                "variance": 214418.1515
              },
              {
                "average": 0.4612498486,
                "count": 2121553,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984962817,
                "variance": 0.2484985429
              },
              {
                "average": 0,
                "count": 2121553,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2121553,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2121553,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1477413008,
                "count": 2121553,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3548434418,
                "variance": 0.1259138682
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95645.37026,
              2373652.314,
              -4.354082883,
              -95149.37026,
              2374125.734,
              9.145917117
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95645.37025986594,
                    2373652.313634478,
                    -4.354082883064052
                  ],
                  [
                    -95645.37025986594,
                    2374125.733634478,
                    -4.354082883064052
                  ],
                  [
                    -95149.37025986594,
                    2374125.733634478,
                    9.145917116935948
                  ],
                  [
                    -95149.37025986594,
                    2373652.313634478,
                    9.145917116935948
                  ],
                  [
                    -95645.37025986594,
                    2373652.313634478,
                    -4.354082883064052
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:18:59+00:00",
            "end_time": "2018-09-08T03:41:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2180.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65401174481948,
              71.29585795009756,
              3.516069425360087
            ],
            [
              -156.65452744548347,
              71.30020636935632,
              3.516069425360087
            ],
            [
              -156.64102596607606,
              71.30038795644522,
              268.4360694253601
            ],
            [
              -156.64051288282724,
              71.29603949659254,
              268.4360694253601
            ],
            [
              -156.65401174481948,
              71.29585795009756,
              3.516069425360087
            ]
          ]
        ]
      },
      "bbox": [
        -156.6545274,
        71.29585795,
        3.516069425,
        -156.6405129,
        71.30038796,
        268.4360694
      ],
      "properties": {
        "datetime": "2018-09-08T05:34:20Z",
        "pc:count": 2975080,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97144.62245,
            "count": 2975080,
            "maximum": -96892.2156,
            "minimum": -97388.0756,
            "name": "X",
            "position": 0,
            "stddev": 136.809477,
            "variance": 18716.833
          },
          {
            "average": 2368628.679,
            "count": 2975080,
            "maximum": 2368870.99,
            "minimum": 2368397.31,
            "name": "Y",
            "position": 1,
            "stddev": 130.2961964,
            "variance": 16977.0988
          },
          {
            "average": 3.983622362,
            "count": 2975080,
            "maximum": 268.4360694,
            "minimum": 3.516069425,
            "name": "Z",
            "position": 2,
            "stddev": 0.3845689701,
            "variance": 0.1478932928
          },
          {
            "average": 32511.12698,
            "count": 2975080,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12113.32993,
            "variance": 146732762
          },
          {
            "average": 1,
            "count": 2975080,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2975080,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5002615056,
            "count": 2975080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000156,
            "variance": 0.2500000156
          },
          {
            "average": 0.0005065410006,
            "count": 2975080,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02250076859,
            "variance": 0.000506284587
          },
          {
            "average": 1.304677857,
            "count": 2975080,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4603037944,
            "variance": 0.2118795831
          },
          {
            "average": -0.7019757603,
            "count": 2975080,
            "maximum": 16.41600037,
            "minimum": -15.97200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44187815,
            "variance": 109.0328193
          },
          {
            "average": 0.4720316765,
            "count": 2975080,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992172439,
            "variance": 0.2492178566
          },
          {
            "average": 413.2694022,
            "count": 2975080,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9688515064,
            "variance": 0.9386732415
          },
          {
            "average": 220419105.5,
            "count": 2975080,
            "maximum": 220420060.5,
            "minimum": 220417885.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 525.2938845,
            "variance": 275933.665
          },
          {
            "average": 0.4720316765,
            "count": 2975080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992172439,
            "variance": 0.2492178566
          },
          {
            "average": 0,
            "count": 2975080,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2975080,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2975080,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2411148608,
            "count": 2975080,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4277599165,
            "variance": 0.1829785462
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97388.0756,
          2368397.31,
          3.516069425,
          -96892.2156,
          2368870.99,
          268.4360694
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97388.07560094772,
                2368397.310498642,
                3.516069425360087
              ],
              [
                -97388.07560094772,
                2368870.9904986415,
                3.516069425360087
              ],
              [
                -96892.21560094773,
                2368870.9904986415,
                268.4360694253601
              ],
              [
                -96892.21560094773,
                2368397.310498642,
                268.4360694253601
              ],
              [
                -97388.07560094772,
                2368397.310498642,
                3.516069425360087
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:34:20+00:00",
        "end_time": "2018-09-08T04:58:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2180.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2180.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2180.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2180.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6545274,
            71.29585795,
            3.516069425,
            -156.6405129,
            71.30038796,
            268.4360694
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65401174481948,
                  71.29585795009756,
                  3.516069425360087
                ],
                [
                  -156.65452744548347,
                  71.30020636935632,
                  3.516069425360087
                ],
                [
                  -156.64102596607606,
                  71.30038795644522,
                  268.4360694253601
                ],
                [
                  -156.64051288282724,
                  71.29603949659254,
                  268.4360694253601
                ],
                [
                  -156.65401174481948,
                  71.29585795009756,
                  3.516069425360087
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2180.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2180.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:34:20Z",
            "pc:count": 2975080,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97144.62245,
                "count": 2975080,
                "maximum": -96892.2156,
                "minimum": -97388.0756,
                "name": "X",
                "position": 0,
                "stddev": 136.809477,
                "variance": 18716.833
              },
              {
                "average": 2368628.679,
                "count": 2975080,
                "maximum": 2368870.99,
                "minimum": 2368397.31,
                "name": "Y",
                "position": 1,
                "stddev": 130.2961964,
                "variance": 16977.0988
              },
              {
                "average": 3.983622362,
                "count": 2975080,
                "maximum": 268.4360694,
                "minimum": 3.516069425,
                "name": "Z",
                "position": 2,
                "stddev": 0.3845689701,
                "variance": 0.1478932928
              },
              {
                "average": 32511.12698,
                "count": 2975080,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12113.32993,
                "variance": 146732762
              },
              {
                "average": 1,
                "count": 2975080,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2975080,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5002615056,
                "count": 2975080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000156,
                "variance": 0.2500000156
              },
              {
                "average": 0.0005065410006,
                "count": 2975080,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02250076859,
                "variance": 0.000506284587
              },
              {
                "average": 1.304677857,
                "count": 2975080,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4603037944,
                "variance": 0.2118795831
              },
              {
                "average": -0.7019757603,
                "count": 2975080,
                "maximum": 16.41600037,
                "minimum": -15.97200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44187815,
                "variance": 109.0328193
              },
              {
                "average": 0.4720316765,
                "count": 2975080,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992172439,
                "variance": 0.2492178566
              },
              {
                "average": 413.2694022,
                "count": 2975080,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9688515064,
                "variance": 0.9386732415
              },
              {
                "average": 220419105.5,
                "count": 2975080,
                "maximum": 220420060.5,
                "minimum": 220417885.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 525.2938845,
                "variance": 275933.665
              },
              {
                "average": 0.4720316765,
                "count": 2975080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992172439,
                "variance": 0.2492178566
              },
              {
                "average": 0,
                "count": 2975080,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2975080,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2975080,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2411148608,
                "count": 2975080,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4277599165,
                "variance": 0.1829785462
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97388.0756,
              2368397.31,
              3.516069425,
              -96892.2156,
              2368870.99,
              268.4360694
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97388.07560094772,
                    2368397.310498642,
                    3.516069425360087
                  ],
                  [
                    -97388.07560094772,
                    2368870.9904986415,
                    3.516069425360087
                  ],
                  [
                    -96892.21560094773,
                    2368870.9904986415,
                    268.4360694253601
                  ],
                  [
                    -96892.21560094773,
                    2368397.310498642,
                    268.4360694253601
                  ],
                  [
                    -97388.07560094772,
                    2368397.310498642,
                    3.516069425360087
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:34:20+00:00",
            "end_time": "2018-09-08T04:58:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2202.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6537314065016,
              71.29995476985938,
              3.444711398316826
            ],
            [
              -156.65424705996648,
              71.30430257585401,
              3.444711398316826
            ],
            [
              -156.64077252020496,
              71.30448375420332,
              381.74471139831684
            ],
            [
              -156.64025947897062,
              71.30013590770228,
              381.74471139831684
            ],
            [
              -156.6537314065016,
              71.29995476985938,
              3.444711398316826
            ]
          ]
        ]
      },
      "bbox": [
        -156.6542471,
        71.29995477,
        3.444711398,
        -156.6402595,
        71.30448375,
        381.7447114
      ],
      "properties": {
        "datetime": "2018-09-08T05:24:51Z",
        "pc:count": 1881013,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97086.16452,
            "count": 1881013,
            "maximum": -96865.20042,
            "minimum": -97359.98042,
            "name": "X",
            "position": 0,
            "stddev": 147.0459766,
            "variance": 21622.51925
          },
          {
            "average": 2369089.672,
            "count": 1881013,
            "maximum": 2369316.06,
            "minimum": 2368842.46,
            "name": "Y",
            "position": 1,
            "stddev": 147.1407814,
            "variance": 21650.40955
          },
          {
            "average": 3.781616874,
            "count": 1881013,
            "maximum": 381.7447114,
            "minimum": 3.444711398,
            "name": "Z",
            "position": 2,
            "stddev": 0.3008425834,
            "variance": 0.09050625997
          },
          {
            "average": 29471.44869,
            "count": 1881013,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13095.6726,
            "variance": 171496640.9
          },
          {
            "average": 1.000002658,
            "count": 1881013,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001630379259,
            "variance": 2.658136529e-06
          },
          {
            "average": 1.000005316,
            "count": 1881013,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002305701396,
            "variance": 5.316258927e-06
          },
          {
            "average": 0.5016541619,
            "count": 1881013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973966,
            "variance": 0.2499973967
          },
          {
            "average": 0.0005215274961,
            "count": 1881013,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02283102675,
            "variance": 0.0005212557823
          },
          {
            "average": 2.514110216,
            "count": 1881013,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.904746111,
            "variance": 8.43754997
          },
          {
            "average": 1.120181526,
            "count": 1881013,
            "maximum": 16.41600037,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.775821194,
            "variance": 95.56668001
          },
          {
            "average": 0.5194796634,
            "count": 1881013,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996205314,
            "variance": 0.2496206754
          },
          {
            "average": 412.3084641,
            "count": 1881013,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9337923081,
            "variance": 0.8719680747
          },
          {
            "average": 220418586.4,
            "count": 1881013,
            "maximum": 220419491.3,
            "minimum": 220417875.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 507.0593865,
            "variance": 257109.2215
          },
          {
            "average": 0.5194796634,
            "count": 1881013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996205314,
            "variance": 0.2496206754
          },
          {
            "average": 0,
            "count": 1881013,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1881013,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1881013,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2064276004,
            "count": 1881013,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4047410695,
            "variance": 0.1638153333
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97359.98042,
          2368842.46,
          3.444711398,
          -96865.20042,
          2369316.06,
          381.7447114
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97359.98042407291,
                2368842.460333254,
                3.444711398316826
              ],
              [
                -97359.98042407291,
                2369316.060333254,
                3.444711398316826
              ],
              [
                -96865.20042407291,
                2369316.060333254,
                381.74471139831684
              ],
              [
                -96865.20042407291,
                2368842.460333254,
                381.74471139831684
              ],
              [
                -97359.98042407291,
                2368842.460333254,
                3.444711398316826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:24:51+00:00",
        "end_time": "2018-09-08T04:57:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2202.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2202.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2202.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2202.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6542471,
            71.29995477,
            3.444711398,
            -156.6402595,
            71.30448375,
            381.7447114
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6537314065016,
                  71.29995476985938,
                  3.444711398316826
                ],
                [
                  -156.65424705996648,
                  71.30430257585401,
                  3.444711398316826
                ],
                [
                  -156.64077252020496,
                  71.30448375420332,
                  381.74471139831684
                ],
                [
                  -156.64025947897062,
                  71.30013590770228,
                  381.74471139831684
                ],
                [
                  -156.6537314065016,
                  71.29995476985938,
                  3.444711398316826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2202.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2202.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:24:51Z",
            "pc:count": 1881013,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97086.16452,
                "count": 1881013,
                "maximum": -96865.20042,
                "minimum": -97359.98042,
                "name": "X",
                "position": 0,
                "stddev": 147.0459766,
                "variance": 21622.51925
              },
              {
                "average": 2369089.672,
                "count": 1881013,
                "maximum": 2369316.06,
                "minimum": 2368842.46,
                "name": "Y",
                "position": 1,
                "stddev": 147.1407814,
                "variance": 21650.40955
              },
              {
                "average": 3.781616874,
                "count": 1881013,
                "maximum": 381.7447114,
                "minimum": 3.444711398,
                "name": "Z",
                "position": 2,
                "stddev": 0.3008425834,
                "variance": 0.09050625997
              },
              {
                "average": 29471.44869,
                "count": 1881013,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13095.6726,
                "variance": 171496640.9
              },
              {
                "average": 1.000002658,
                "count": 1881013,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001630379259,
                "variance": 2.658136529e-06
              },
              {
                "average": 1.000005316,
                "count": 1881013,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002305701396,
                "variance": 5.316258927e-06
              },
              {
                "average": 0.5016541619,
                "count": 1881013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973966,
                "variance": 0.2499973967
              },
              {
                "average": 0.0005215274961,
                "count": 1881013,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02283102675,
                "variance": 0.0005212557823
              },
              {
                "average": 2.514110216,
                "count": 1881013,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.904746111,
                "variance": 8.43754997
              },
              {
                "average": 1.120181526,
                "count": 1881013,
                "maximum": 16.41600037,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.775821194,
                "variance": 95.56668001
              },
              {
                "average": 0.5194796634,
                "count": 1881013,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996205314,
                "variance": 0.2496206754
              },
              {
                "average": 412.3084641,
                "count": 1881013,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9337923081,
                "variance": 0.8719680747
              },
              {
                "average": 220418586.4,
                "count": 1881013,
                "maximum": 220419491.3,
                "minimum": 220417875.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 507.0593865,
                "variance": 257109.2215
              },
              {
                "average": 0.5194796634,
                "count": 1881013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996205314,
                "variance": 0.2496206754
              },
              {
                "average": 0,
                "count": 1881013,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1881013,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1881013,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2064276004,
                "count": 1881013,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4047410695,
                "variance": 0.1638153333
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97359.98042,
              2368842.46,
              3.444711398,
              -96865.20042,
              2369316.06,
              381.7447114
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97359.98042407291,
                    2368842.460333254,
                    3.444711398316826
                  ],
                  [
                    -97359.98042407291,
                    2369316.060333254,
                    3.444711398316826
                  ],
                  [
                    -96865.20042407291,
                    2369316.060333254,
                    381.74471139831684
                  ],
                  [
                    -96865.20042407291,
                    2368842.460333254,
                    381.74471139831684
                  ],
                  [
                    -97359.98042407291,
                    2368842.460333254,
                    3.444711398316826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:24:51+00:00",
            "end_time": "2018-09-08T04:57:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2308.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57530644972005,
              71.32397167026508,
              0.988037988549399
            ],
            [
              -156.57580738821883,
              71.32832020280829,
              0.988037988549399
            ],
            [
              -156.56228558224487,
              71.32849646235417,
              18.408037988549403
            ],
            [
              -156.5617872682094,
              71.32414789034296,
              18.408037988549403
            ],
            [
              -156.57530644972005,
              71.32397167026508,
              0.988037988549399
            ]
          ]
        ]
      },
      "bbox": [
        -156.5758074,
        71.32397167,
        0.9880379885,
        -156.5617873,
        71.32849646,
        18.40803799
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:56Z",
        "pc:count": 2194022,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94143.34828,
            "count": 2194022,
            "maximum": -93886.89775,
            "minimum": -94382.85775,
            "name": "X",
            "position": 0,
            "stddev": 113.8183641,
            "variance": 12954.62002
          },
          {
            "average": 2371576.873,
            "count": 2194022,
            "maximum": 2371814.663,
            "minimum": 2371341.083,
            "name": "Y",
            "position": 1,
            "stddev": 131.816246,
            "variance": 17375.5227
          },
          {
            "average": 2.951080948,
            "count": 2194022,
            "maximum": 18.40803799,
            "minimum": 0.9880379885,
            "name": "Z",
            "position": 2,
            "stddev": 0.7247878025,
            "variance": 0.5253173587
          },
          {
            "average": 28106.40765,
            "count": 2194022,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13151.56519,
            "variance": 172963666.9
          },
          {
            "average": 1.000001367,
            "count": 2194022,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001169337669,
            "variance": 1.367350585e-06
          },
          {
            "average": 1.000002735,
            "count": 2194022,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00165369206,
            "variance": 2.734697431e-06
          },
          {
            "average": 0.5015236857,
            "count": 2194022,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999977923,
            "variance": 0.2499977923
          },
          {
            "average": 0.0005533217078,
            "count": 2194022,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02351628786,
            "variance": 0.0005530157949
          },
          {
            "average": 3.015227742,
            "count": 2194022,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.234960115,
            "variance": 10.46496694
          },
          {
            "average": 0.4084718195,
            "count": 2194022,
            "maximum": 16.38599968,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.740573773,
            "variance": 94.87877743
          },
          {
            "average": 0.5003327223,
            "count": 2194022,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.5000000032,
            "variance": 0.2500000032
          },
          {
            "average": 412.0636156,
            "count": 2194022,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8881731663,
            "variance": 0.7888515734
          },
          {
            "average": 220418444.3,
            "count": 2194022,
            "maximum": 220419556.8,
            "minimum": 220417360.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 492.3518115,
            "variance": 242410.3063
          },
          {
            "average": 0.5003327223,
            "count": 2194022,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.5000000032,
            "variance": 0.2500000032
          },
          {
            "average": 0,
            "count": 2194022,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2194022,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2194022,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2149550005,
            "count": 2194022,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4107912184,
            "variance": 0.1687494251
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94382.85775,
          2371341.083,
          0.9880379885,
          -93886.89775,
          2371814.663,
          18.40803799
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94382.85775286051,
                2371341.0828269664,
                0.988037988549399
              ],
              [
                -94382.85775286051,
                2371814.6628269665,
                0.988037988549399
              ],
              [
                -93886.89775286052,
                2371814.6628269665,
                18.408037988549403
              ],
              [
                -93886.89775286052,
                2371341.0828269664,
                18.408037988549403
              ],
              [
                -94382.85775286051,
                2371341.0828269664,
                0.988037988549399
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:56+00:00",
        "end_time": "2018-09-08T04:49:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2308.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2308.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2308.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2308.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5758074,
            71.32397167,
            0.9880379885,
            -156.5617873,
            71.32849646,
            18.40803799
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57530644972005,
                  71.32397167026508,
                  0.988037988549399
                ],
                [
                  -156.57580738821883,
                  71.32832020280829,
                  0.988037988549399
                ],
                [
                  -156.56228558224487,
                  71.32849646235417,
                  18.408037988549403
                ],
                [
                  -156.5617872682094,
                  71.32414789034296,
                  18.408037988549403
                ],
                [
                  -156.57530644972005,
                  71.32397167026508,
                  0.988037988549399
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2308.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2308.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:56Z",
            "pc:count": 2194022,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94143.34828,
                "count": 2194022,
                "maximum": -93886.89775,
                "minimum": -94382.85775,
                "name": "X",
                "position": 0,
                "stddev": 113.8183641,
                "variance": 12954.62002
              },
              {
                "average": 2371576.873,
                "count": 2194022,
                "maximum": 2371814.663,
                "minimum": 2371341.083,
                "name": "Y",
                "position": 1,
                "stddev": 131.816246,
                "variance": 17375.5227
              },
              {
                "average": 2.951080948,
                "count": 2194022,
                "maximum": 18.40803799,
                "minimum": 0.9880379885,
                "name": "Z",
                "position": 2,
                "stddev": 0.7247878025,
                "variance": 0.5253173587
              },
              {
                "average": 28106.40765,
                "count": 2194022,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13151.56519,
                "variance": 172963666.9
              },
              {
                "average": 1.000001367,
                "count": 2194022,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001169337669,
                "variance": 1.367350585e-06
              },
              {
                "average": 1.000002735,
                "count": 2194022,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00165369206,
                "variance": 2.734697431e-06
              },
              {
                "average": 0.5015236857,
                "count": 2194022,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999977923,
                "variance": 0.2499977923
              },
              {
                "average": 0.0005533217078,
                "count": 2194022,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02351628786,
                "variance": 0.0005530157949
              },
              {
                "average": 3.015227742,
                "count": 2194022,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.234960115,
                "variance": 10.46496694
              },
              {
                "average": 0.4084718195,
                "count": 2194022,
                "maximum": 16.38599968,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.740573773,
                "variance": 94.87877743
              },
              {
                "average": 0.5003327223,
                "count": 2194022,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.5000000032,
                "variance": 0.2500000032
              },
              {
                "average": 412.0636156,
                "count": 2194022,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8881731663,
                "variance": 0.7888515734
              },
              {
                "average": 220418444.3,
                "count": 2194022,
                "maximum": 220419556.8,
                "minimum": 220417360.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 492.3518115,
                "variance": 242410.3063
              },
              {
                "average": 0.5003327223,
                "count": 2194022,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.5000000032,
                "variance": 0.2500000032
              },
              {
                "average": 0,
                "count": 2194022,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2194022,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2194022,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2149550005,
                "count": 2194022,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4107912184,
                "variance": 0.1687494251
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94382.85775,
              2371341.083,
              0.9880379885,
              -93886.89775,
              2371814.663,
              18.40803799
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94382.85775286051,
                    2371341.0828269664,
                    0.988037988549399
                  ],
                  [
                    -94382.85775286051,
                    2371814.6628269665,
                    0.988037988549399
                  ],
                  [
                    -93886.89775286052,
                    2371814.6628269665,
                    18.408037988549403
                  ],
                  [
                    -93886.89775286052,
                    2371341.0828269664,
                    18.408037988549403
                  ],
                  [
                    -94382.85775286051,
                    2371341.0828269664,
                    0.988037988549399
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:56+00:00",
            "end_time": "2018-09-08T04:49:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2336.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66395822603278,
              71.33691782526897,
              0.825243303430879
            ],
            [
              -156.66444645589894,
              71.34101288525123,
              0.825243303430879
            ],
            [
              -156.65091604505875,
              71.34119526055566,
              1.485243303430879
            ],
            [
              -156.65043028920687,
              71.33710016208751,
              1.485243303430879
            ],
            [
              -156.66395822603278,
              71.33691782526897,
              0.825243303430879
            ]
          ]
        ]
      },
      "bbox": [
        -156.6644465,
        71.33691783,
        0.8252433034,
        -156.6504303,
        71.34119526,
        1.485243303
      ],
      "properties": {
        "datetime": "2018-09-08T04:00:46Z",
        "pc:count": 1119469,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97283.42063,
            "count": 1119469,
            "maximum": -97077.64182,
            "minimum": -97573.66182,
            "name": "X",
            "position": 0,
            "stddev": 132.073576,
            "variance": 17443.42948
          },
          {
            "average": 2373041.571,
            "count": 1119469,
            "maximum": 2373322.877,
            "minimum": 2372876.917,
            "name": "Y",
            "position": 1,
            "stddev": 103.2262295,
            "variance": 10655.65446
          },
          {
            "average": 1.134766917,
            "count": 1119469,
            "maximum": 1.485243303,
            "minimum": 0.8252433034,
            "name": "Z",
            "position": 2,
            "stddev": 0.06908077653,
            "variance": 0.004772153686
          },
          {
            "average": 14043.57334,
            "count": 1119469,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9984.190028,
            "variance": 99684050.52
          },
          {
            "average": 1,
            "count": 1119469,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1119469,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4905379247,
            "count": 1119469,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999106844,
            "variance": 0.2499106924
          },
          {
            "average": 0.0004850513949,
            "count": 1119469,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0220185502,
            "variance": 0.0004848165531
          },
          {
            "average": 7.639294165,
            "count": 1119469,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.451950893,
            "variance": 6.012063181
          },
          {
            "average": 4.100876403,
            "count": 1119469,
            "maximum": 16.32600021,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.246029057,
            "variance": 39.01287898
          },
          {
            "average": 0.4821884304,
            "count": 1119469,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996828705,
            "variance": 0.249682971
          },
          {
            "average": 403.6128924,
            "count": 1119469,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6384193664,
            "variance": 0.4075792874
          },
          {
            "average": 220413702.4,
            "count": 1119469,
            "maximum": 220414446,
            "minimum": 220412850.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 369.9842238,
            "variance": 136888.3258
          },
          {
            "average": 0.4821884304,
            "count": 1119469,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996828705,
            "variance": 0.249682971
          },
          {
            "average": 0,
            "count": 1119469,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1119469,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1119469,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04338842791,
            "count": 1119469,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2037299912,
            "variance": 0.04150590931
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97573.66182,
          2372876.917,
          0.8252433034,
          -97077.64182,
          2373322.877,
          1.485243303
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97573.66181765858,
                2372876.916964633,
                0.825243303430879
              ],
              [
                -97573.66181765858,
                2373322.876964633,
                0.825243303430879
              ],
              [
                -97077.64181765859,
                2373322.876964633,
                1.485243303430879
              ],
              [
                -97077.64181765859,
                2372876.916964633,
                1.485243303430879
              ],
              [
                -97573.66181765858,
                2372876.916964633,
                0.825243303430879
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:00:46+00:00",
        "end_time": "2018-09-08T03:34:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2336.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2336.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2336.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2336.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6644465,
            71.33691783,
            0.8252433034,
            -156.6504303,
            71.34119526,
            1.485243303
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66395822603278,
                  71.33691782526897,
                  0.825243303430879
                ],
                [
                  -156.66444645589894,
                  71.34101288525123,
                  0.825243303430879
                ],
                [
                  -156.65091604505875,
                  71.34119526055566,
                  1.485243303430879
                ],
                [
                  -156.65043028920687,
                  71.33710016208751,
                  1.485243303430879
                ],
                [
                  -156.66395822603278,
                  71.33691782526897,
                  0.825243303430879
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2336.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2336.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:00:46Z",
            "pc:count": 1119469,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97283.42063,
                "count": 1119469,
                "maximum": -97077.64182,
                "minimum": -97573.66182,
                "name": "X",
                "position": 0,
                "stddev": 132.073576,
                "variance": 17443.42948
              },
              {
                "average": 2373041.571,
                "count": 1119469,
                "maximum": 2373322.877,
                "minimum": 2372876.917,
                "name": "Y",
                "position": 1,
                "stddev": 103.2262295,
                "variance": 10655.65446
              },
              {
                "average": 1.134766917,
                "count": 1119469,
                "maximum": 1.485243303,
                "minimum": 0.8252433034,
                "name": "Z",
                "position": 2,
                "stddev": 0.06908077653,
                "variance": 0.004772153686
              },
              {
                "average": 14043.57334,
                "count": 1119469,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9984.190028,
                "variance": 99684050.52
              },
              {
                "average": 1,
                "count": 1119469,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1119469,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4905379247,
                "count": 1119469,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999106844,
                "variance": 0.2499106924
              },
              {
                "average": 0.0004850513949,
                "count": 1119469,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0220185502,
                "variance": 0.0004848165531
              },
              {
                "average": 7.639294165,
                "count": 1119469,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.451950893,
                "variance": 6.012063181
              },
              {
                "average": 4.100876403,
                "count": 1119469,
                "maximum": 16.32600021,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.246029057,
                "variance": 39.01287898
              },
              {
                "average": 0.4821884304,
                "count": 1119469,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996828705,
                "variance": 0.249682971
              },
              {
                "average": 403.6128924,
                "count": 1119469,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6384193664,
                "variance": 0.4075792874
              },
              {
                "average": 220413702.4,
                "count": 1119469,
                "maximum": 220414446,
                "minimum": 220412850.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 369.9842238,
                "variance": 136888.3258
              },
              {
                "average": 0.4821884304,
                "count": 1119469,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996828705,
                "variance": 0.249682971
              },
              {
                "average": 0,
                "count": 1119469,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1119469,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1119469,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04338842791,
                "count": 1119469,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2037299912,
                "variance": 0.04150590931
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97573.66182,
              2372876.917,
              0.8252433034,
              -97077.64182,
              2373322.877,
              1.485243303
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97573.66181765858,
                    2372876.916964633,
                    0.825243303430879
                  ],
                  [
                    -97573.66181765858,
                    2373322.876964633,
                    0.825243303430879
                  ],
                  [
                    -97077.64181765859,
                    2373322.876964633,
                    1.485243303430879
                  ],
                  [
                    -97077.64181765859,
                    2372876.916964633,
                    1.485243303430879
                  ],
                  [
                    -97573.66181765858,
                    2372876.916964633,
                    0.825243303430879
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:00:46+00:00",
            "end_time": "2018-09-08T03:34:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2247.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57651505122632,
              71.30758532656354,
              0.942014671921562
            ],
            [
              -156.5770159212361,
              71.31193392357959,
              0.942014671921562
            ],
            [
              -156.56350347936922,
              71.31211025382328,
              53.44201467192156
            ],
            [
              -156.563005230412,
              71.30776161736017,
              53.44201467192156
            ],
            [
              -156.57651505122632,
              71.30758532656354,
              0.942014671921562
            ]
          ]
        ]
      },
      "bbox": [
        -156.5770159,
        71.30758533,
        0.9420146719,
        -156.5630052,
        71.31211025,
        53.44201467
      ],
      "properties": {
        "datetime": "2018-09-11T17:35:49Z",
        "pc:count": 2547251,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94262.11477,
            "count": 2547251,
            "maximum": -94000.32012,
            "minimum": -94496.30012,
            "name": "X",
            "position": 0,
            "stddev": 137.4263128,
            "variance": 18885.99144
          },
          {
            "average": 2369849.638,
            "count": 2547251,
            "maximum": 2370034.433,
            "minimum": 2369560.793,
            "name": "Y",
            "position": 1,
            "stddev": 114.2031955,
            "variance": 13042.36987
          },
          {
            "average": 2.658798742,
            "count": 2547251,
            "maximum": 53.44201467,
            "minimum": 0.9420146719,
            "name": "Z",
            "position": 2,
            "stddev": 0.8126820906,
            "variance": 0.6604521804
          },
          {
            "average": 38138.12696,
            "count": 2547251,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 17172.42192,
            "variance": 294892074.5
          },
          {
            "average": 1.000001963,
            "count": 2547251,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001401034373,
            "variance": 1.962897315e-06
          },
          {
            "average": 1.000003926,
            "count": 2547251,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001981359867,
            "variance": 3.925786924e-06
          },
          {
            "average": 0.4902587142,
            "count": 2547251,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999051965,
            "variance": 0.2499052055
          },
          {
            "average": 0.0007474724713,
            "count": 2547251,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02732972831,
            "variance": 0.0007469140494
          },
          {
            "average": 2.246450782,
            "count": 2547251,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.590574663,
            "variance": 6.711077083
          },
          {
            "average": 5.040895434,
            "count": 2547251,
            "maximum": 20.53800011,
            "minimum": -16.00200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51706324,
            "variance": 110.6086193
          },
          {
            "average": 0.4801866797,
            "count": 2547251,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996073762,
            "variance": 0.2496075303
          },
          {
            "average": 430.4169091,
            "count": 2547251,
            "maximum": 454,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.71853313,
            "variance": 350.3834827
          },
          {
            "average": 220539220.7,
            "count": 2547251,
            "maximum": 220722549.2,
            "minimum": 220419527.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 147670.5222,
            "variance": 21806583120.0
          },
          {
            "average": 0.4801866797,
            "count": 2547251,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996073762,
            "variance": 0.2496075303
          },
          {
            "average": 0,
            "count": 2547251,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2547251,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2547251,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2258422904,
            "count": 2547251,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4181358857,
            "variance": 0.1748376189
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94496.30012,
          2369560.793,
          0.9420146719,
          -94000.32012,
          2370034.433,
          53.44201467
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94496.30012178258,
                2369560.792939695,
                0.942014671921562
              ],
              [
                -94496.30012178258,
                2370034.4329396947,
                0.942014671921562
              ],
              [
                -94000.32012178257,
                2370034.4329396947,
                53.44201467192156
              ],
              [
                -94000.32012178257,
                2369560.792939695,
                53.44201467192156
              ],
              [
                -94496.30012178258,
                2369560.792939695,
                0.942014671921562
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:35:49+00:00",
        "end_time": "2018-09-08T05:25:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2247.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2247.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2247.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2247.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5770159,
            71.30758533,
            0.9420146719,
            -156.5630052,
            71.31211025,
            53.44201467
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57651505122632,
                  71.30758532656354,
                  0.942014671921562
                ],
                [
                  -156.5770159212361,
                  71.31193392357959,
                  0.942014671921562
                ],
                [
                  -156.56350347936922,
                  71.31211025382328,
                  53.44201467192156
                ],
                [
                  -156.563005230412,
                  71.30776161736017,
                  53.44201467192156
                ],
                [
                  -156.57651505122632,
                  71.30758532656354,
                  0.942014671921562
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2247.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2247.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:35:49Z",
            "pc:count": 2547251,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94262.11477,
                "count": 2547251,
                "maximum": -94000.32012,
                "minimum": -94496.30012,
                "name": "X",
                "position": 0,
                "stddev": 137.4263128,
                "variance": 18885.99144
              },
              {
                "average": 2369849.638,
                "count": 2547251,
                "maximum": 2370034.433,
                "minimum": 2369560.793,
                "name": "Y",
                "position": 1,
                "stddev": 114.2031955,
                "variance": 13042.36987
              },
              {
                "average": 2.658798742,
                "count": 2547251,
                "maximum": 53.44201467,
                "minimum": 0.9420146719,
                "name": "Z",
                "position": 2,
                "stddev": 0.8126820906,
                "variance": 0.6604521804
              },
              {
                "average": 38138.12696,
                "count": 2547251,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 17172.42192,
                "variance": 294892074.5
              },
              {
                "average": 1.000001963,
                "count": 2547251,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001401034373,
                "variance": 1.962897315e-06
              },
              {
                "average": 1.000003926,
                "count": 2547251,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001981359867,
                "variance": 3.925786924e-06
              },
              {
                "average": 0.4902587142,
                "count": 2547251,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999051965,
                "variance": 0.2499052055
              },
              {
                "average": 0.0007474724713,
                "count": 2547251,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02732972831,
                "variance": 0.0007469140494
              },
              {
                "average": 2.246450782,
                "count": 2547251,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.590574663,
                "variance": 6.711077083
              },
              {
                "average": 5.040895434,
                "count": 2547251,
                "maximum": 20.53800011,
                "minimum": -16.00200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51706324,
                "variance": 110.6086193
              },
              {
                "average": 0.4801866797,
                "count": 2547251,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996073762,
                "variance": 0.2496075303
              },
              {
                "average": 430.4169091,
                "count": 2547251,
                "maximum": 454,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.71853313,
                "variance": 350.3834827
              },
              {
                "average": 220539220.7,
                "count": 2547251,
                "maximum": 220722549.2,
                "minimum": 220419527.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 147670.5222,
                "variance": 21806583120.0
              },
              {
                "average": 0.4801866797,
                "count": 2547251,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996073762,
                "variance": 0.2496075303
              },
              {
                "average": 0,
                "count": 2547251,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2547251,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2547251,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2258422904,
                "count": 2547251,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4181358857,
                "variance": 0.1748376189
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94496.30012,
              2369560.793,
              0.9420146719,
              -94000.32012,
              2370034.433,
              53.44201467
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94496.30012178258,
                    2369560.792939695,
                    0.942014671921562
                  ],
                  [
                    -94496.30012178258,
                    2370034.4329396947,
                    0.942014671921562
                  ],
                  [
                    -94000.32012178257,
                    2370034.4329396947,
                    53.44201467192156
                  ],
                  [
                    -94000.32012178257,
                    2369560.792939695,
                    53.44201467192156
                  ],
                  [
                    -94496.30012178258,
                    2369560.792939695,
                    0.942014671921562
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:35:49+00:00",
            "end_time": "2018-09-08T05:25:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2269.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70371183722992,
              71.31670041445844,
              -17.095826819218967
            ],
            [
              -156.70423763486303,
              71.32104894882106,
              -17.095826819218967
            ],
            [
              -156.69072561821906,
              71.32123394659936,
              15.784173180781035
            ],
            [
              -156.6902024420252,
              71.31688537082941,
              15.784173180781035
            ],
            [
              -156.70371183722992,
              71.31670041445844,
              -17.095826819218967
            ]
          ]
        ]
      },
      "bbox": [
        -156.7042376,
        71.31670041,
        -17.09582682,
        -156.6902024,
        71.32123395,
        15.78417318
      ],
      "properties": {
        "datetime": "2018-09-08T04:20:19Z",
        "pc:count": 1769444,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98873.12785,
            "count": 1769444,
            "maximum": -98622.67789,
            "minimum": -99118.47789,
            "name": "X",
            "position": 0,
            "stddev": 133.8512865,
            "variance": 17916.16689
          },
          {
            "average": 2370982.806,
            "count": 1769444,
            "maximum": 2371211.097,
            "minimum": 2370737.457,
            "name": "Y",
            "position": 1,
            "stddev": 129.5220874,
            "variance": 16775.97112
          },
          {
            "average": 1.640871522,
            "count": 1769444,
            "maximum": 15.78417318,
            "minimum": -17.09582682,
            "name": "Z",
            "position": 2,
            "stddev": 0.4996473984,
            "variance": 0.2496475227
          },
          {
            "average": 18151.80481,
            "count": 1769444,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12949.00361,
            "variance": 167676694.5
          },
          {
            "average": 1.001160817,
            "count": 1769444,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03533784677,
            "variance": 0.001248763415
          },
          {
            "average": 1.002359498,
            "count": 1769444,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05129186718,
            "variance": 0.002630855639
          },
          {
            "average": 0.4939664663,
            "count": 1769444,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999637364,
            "variance": 0.2499637377
          },
          {
            "average": 0.0005267191276,
            "count": 1769444,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02294432374,
            "variance": 0.0005264419921
          },
          {
            "average": 8.050108396,
            "count": 1769444,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.148946845,
            "variance": 4.617972542
          },
          {
            "average": 2.789006637,
            "count": 1769444,
            "maximum": 16.26600075,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.565673243,
            "variance": 43.10806514
          },
          {
            "average": 0.4943383345,
            "count": 1769444,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999680858,
            "variance": 0.2499680868
          },
          {
            "average": 405.2604694,
            "count": 1769444,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6377227454,
            "variance": 0.4066903
          },
          {
            "average": 220414625.6,
            "count": 1769444,
            "maximum": 220415619.3,
            "minimum": 220413898.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 357.6502286,
            "variance": 127913.686
          },
          {
            "average": 0.4943383345,
            "count": 1769444,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999680858,
            "variance": 0.2499680868
          },
          {
            "average": 0,
            "count": 1769444,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1769444,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1769444,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03905803179,
            "count": 1769444,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1937331235,
            "variance": 0.03753252315
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99118.47789,
          2370737.457,
          -17.09582682,
          -98622.67789,
          2371211.097,
          15.78417318
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99118.4778875449,
                2370737.4572830615,
                -17.095826819218967
              ],
              [
                -99118.4778875449,
                2371211.097283061,
                -17.095826819218967
              ],
              [
                -98622.67788754491,
                2371211.097283061,
                15.784173180781035
              ],
              [
                -98622.67788754491,
                2370737.4572830615,
                15.784173180781035
              ],
              [
                -99118.4778875449,
                2370737.4572830615,
                -17.095826819218967
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:20:19+00:00",
        "end_time": "2018-09-08T03:51:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2269.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2269.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2269.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2269.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7042376,
            71.31670041,
            -17.09582682,
            -156.6902024,
            71.32123395,
            15.78417318
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70371183722992,
                  71.31670041445844,
                  -17.095826819218967
                ],
                [
                  -156.70423763486303,
                  71.32104894882106,
                  -17.095826819218967
                ],
                [
                  -156.69072561821906,
                  71.32123394659936,
                  15.784173180781035
                ],
                [
                  -156.6902024420252,
                  71.31688537082941,
                  15.784173180781035
                ],
                [
                  -156.70371183722992,
                  71.31670041445844,
                  -17.095826819218967
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2269.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2269.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:20:19Z",
            "pc:count": 1769444,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98873.12785,
                "count": 1769444,
                "maximum": -98622.67789,
                "minimum": -99118.47789,
                "name": "X",
                "position": 0,
                "stddev": 133.8512865,
                "variance": 17916.16689
              },
              {
                "average": 2370982.806,
                "count": 1769444,
                "maximum": 2371211.097,
                "minimum": 2370737.457,
                "name": "Y",
                "position": 1,
                "stddev": 129.5220874,
                "variance": 16775.97112
              },
              {
                "average": 1.640871522,
                "count": 1769444,
                "maximum": 15.78417318,
                "minimum": -17.09582682,
                "name": "Z",
                "position": 2,
                "stddev": 0.4996473984,
                "variance": 0.2496475227
              },
              {
                "average": 18151.80481,
                "count": 1769444,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12949.00361,
                "variance": 167676694.5
              },
              {
                "average": 1.001160817,
                "count": 1769444,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03533784677,
                "variance": 0.001248763415
              },
              {
                "average": 1.002359498,
                "count": 1769444,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05129186718,
                "variance": 0.002630855639
              },
              {
                "average": 0.4939664663,
                "count": 1769444,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999637364,
                "variance": 0.2499637377
              },
              {
                "average": 0.0005267191276,
                "count": 1769444,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02294432374,
                "variance": 0.0005264419921
              },
              {
                "average": 8.050108396,
                "count": 1769444,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.148946845,
                "variance": 4.617972542
              },
              {
                "average": 2.789006637,
                "count": 1769444,
                "maximum": 16.26600075,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.565673243,
                "variance": 43.10806514
              },
              {
                "average": 0.4943383345,
                "count": 1769444,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999680858,
                "variance": 0.2499680868
              },
              {
                "average": 405.2604694,
                "count": 1769444,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6377227454,
                "variance": 0.4066903
              },
              {
                "average": 220414625.6,
                "count": 1769444,
                "maximum": 220415619.3,
                "minimum": 220413898.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 357.6502286,
                "variance": 127913.686
              },
              {
                "average": 0.4943383345,
                "count": 1769444,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999680858,
                "variance": 0.2499680868
              },
              {
                "average": 0,
                "count": 1769444,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1769444,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1769444,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03905803179,
                "count": 1769444,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1937331235,
                "variance": 0.03753252315
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99118.47789,
              2370737.457,
              -17.09582682,
              -98622.67789,
              2371211.097,
              15.78417318
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99118.4778875449,
                    2370737.4572830615,
                    -17.095826819218967
                  ],
                  [
                    -99118.4778875449,
                    2371211.097283061,
                    -17.095826819218967
                  ],
                  [
                    -98622.67788754491,
                    2371211.097283061,
                    15.784173180781035
                  ],
                  [
                    -98622.67788754491,
                    2370737.4572830615,
                    15.784173180781035
                  ],
                  [
                    -99118.4778875449,
                    2370737.4572830615,
                    -17.095826819218967
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:20:19+00:00",
            "end_time": "2018-09-08T03:51:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2351.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58689997614485,
              71.34045676201103,
              0.851072026083826
            ],
            [
              -156.58740328451458,
              71.34480354883641,
              0.851072026083826
            ],
            [
              -156.57386668715714,
              71.34498068719208,
              1.351072026083826
            ],
            [
              -156.57336600667318,
              71.34063386068,
              1.351072026083826
            ],
            [
              -156.58689997614485,
              71.34045676201103,
              0.851072026083826
            ]
          ]
        ]
      },
      "bbox": [
        -156.5874033,
        71.34045676,
        0.8510720261,
        -156.573366,
        71.34498069,
        1.351072026
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:04Z",
        "pc:count": 1635258,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94492.74517,
            "count": 1635258,
            "maximum": -94241.53678,
            "minimum": -94737.67678,
            "name": "X",
            "position": 0,
            "stddev": 134.6543111,
            "variance": 18131.7835
          },
          {
            "average": 2373391.714,
            "count": 1635258,
            "maximum": 2373623.472,
            "minimum": 2373150.132,
            "name": "Y",
            "position": 1,
            "stddev": 128.5352597,
            "variance": 16521.31298
          },
          {
            "average": 1.077567717,
            "count": 1635258,
            "maximum": 1.351072026,
            "minimum": 0.8510720261,
            "name": "Z",
            "position": 2,
            "stddev": 0.04395673753,
            "variance": 0.001932194774
          },
          {
            "average": 16883.08684,
            "count": 1635258,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12427.3593,
            "variance": 154439259.2
          },
          {
            "average": 1,
            "count": 1635258,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1635258,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4923541117,
            "count": 1635258,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999416898,
            "variance": 0.2499416932
          },
          {
            "average": 0.0006280354537,
            "count": 1635258,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02505277248,
            "variance": 0.000627641409
          },
          {
            "average": 8.141302473,
            "count": 1635258,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.927453205,
            "variance": 3.715075858
          },
          {
            "average": 3.224597282,
            "count": 1635258,
            "maximum": 16.25399971,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.648590664,
            "variance": 44.20375782
          },
          {
            "average": 0.478518986,
            "count": 1635258,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995385057,
            "variance": 0.2495387186
          },
          {
            "average": 407.533969,
            "count": 1635258,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6730446475,
            "variance": 0.4529890975
          },
          {
            "average": 220415904.9,
            "count": 1635258,
            "maximum": 220416684.2,
            "minimum": 220415113.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 418.8564357,
            "variance": 175440.7137
          },
          {
            "average": 0.478518986,
            "count": 1635258,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995385057,
            "variance": 0.2495387186
          },
          {
            "average": 0,
            "count": 1635258,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1635258,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1635258,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04275594432,
            "count": 1635258,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2023064472,
            "variance": 0.04092789858
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94737.67678,
          2373150.132,
          0.8510720261,
          -94241.53678,
          2373623.472,
          1.351072026
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94737.67677902142,
                2373150.132283666,
                0.851072026083826
              ],
              [
                -94737.67677902142,
                2373623.472283666,
                0.851072026083826
              ],
              [
                -94241.53677902141,
                2373623.472283666,
                1.351072026083826
              ],
              [
                -94241.53677902141,
                2373150.132283666,
                1.351072026083826
              ],
              [
                -94737.67677902142,
                2373150.132283666,
                0.851072026083826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:04+00:00",
        "end_time": "2018-09-08T04:11:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2351.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2351.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2351.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2351.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5874033,
            71.34045676,
            0.8510720261,
            -156.573366,
            71.34498069,
            1.351072026
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58689997614485,
                  71.34045676201103,
                  0.851072026083826
                ],
                [
                  -156.58740328451458,
                  71.34480354883641,
                  0.851072026083826
                ],
                [
                  -156.57386668715714,
                  71.34498068719208,
                  1.351072026083826
                ],
                [
                  -156.57336600667318,
                  71.34063386068,
                  1.351072026083826
                ],
                [
                  -156.58689997614485,
                  71.34045676201103,
                  0.851072026083826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2351.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2351.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:04Z",
            "pc:count": 1635258,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94492.74517,
                "count": 1635258,
                "maximum": -94241.53678,
                "minimum": -94737.67678,
                "name": "X",
                "position": 0,
                "stddev": 134.6543111,
                "variance": 18131.7835
              },
              {
                "average": 2373391.714,
                "count": 1635258,
                "maximum": 2373623.472,
                "minimum": 2373150.132,
                "name": "Y",
                "position": 1,
                "stddev": 128.5352597,
                "variance": 16521.31298
              },
              {
                "average": 1.077567717,
                "count": 1635258,
                "maximum": 1.351072026,
                "minimum": 0.8510720261,
                "name": "Z",
                "position": 2,
                "stddev": 0.04395673753,
                "variance": 0.001932194774
              },
              {
                "average": 16883.08684,
                "count": 1635258,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12427.3593,
                "variance": 154439259.2
              },
              {
                "average": 1,
                "count": 1635258,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1635258,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4923541117,
                "count": 1635258,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999416898,
                "variance": 0.2499416932
              },
              {
                "average": 0.0006280354537,
                "count": 1635258,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02505277248,
                "variance": 0.000627641409
              },
              {
                "average": 8.141302473,
                "count": 1635258,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.927453205,
                "variance": 3.715075858
              },
              {
                "average": 3.224597282,
                "count": 1635258,
                "maximum": 16.25399971,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.648590664,
                "variance": 44.20375782
              },
              {
                "average": 0.478518986,
                "count": 1635258,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995385057,
                "variance": 0.2495387186
              },
              {
                "average": 407.533969,
                "count": 1635258,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6730446475,
                "variance": 0.4529890975
              },
              {
                "average": 220415904.9,
                "count": 1635258,
                "maximum": 220416684.2,
                "minimum": 220415113.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 418.8564357,
                "variance": 175440.7137
              },
              {
                "average": 0.478518986,
                "count": 1635258,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995385057,
                "variance": 0.2495387186
              },
              {
                "average": 0,
                "count": 1635258,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1635258,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1635258,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04275594432,
                "count": 1635258,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2023064472,
                "variance": 0.04092789858
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94737.67678,
              2373150.132,
              0.8510720261,
              -94241.53678,
              2373623.472,
              1.351072026
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94737.67677902142,
                    2373150.132283666,
                    0.851072026083826
                  ],
                  [
                    -94737.67677902142,
                    2373623.472283666,
                    0.851072026083826
                  ],
                  [
                    -94241.53677902141,
                    2373623.472283666,
                    1.351072026083826
                  ],
                  [
                    -94241.53677902141,
                    2373150.132283666,
                    1.351072026083826
                  ],
                  [
                    -94737.67677902142,
                    2373150.132283666,
                    0.851072026083826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:04+00:00",
            "end_time": "2018-09-08T04:11:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2314.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6645235375437,
              71.32872471868657,
              -15.189570137438615
            ],
            [
              -156.6650417998176,
              71.3330720592235,
              -15.189570137438615
            ],
            [
              -156.65151783428593,
              71.33325444365508,
              25.350429862561384
            ],
            [
              -156.6510021963701,
              71.32890706227856,
              25.350429862561384
            ],
            [
              -156.6645235375437,
              71.32872471868657,
              -15.189570137438615
            ]
          ]
        ]
      },
      "bbox": [
        -156.6650418,
        71.32872472,
        -15.18957014,
        -156.6510022,
        71.33325444,
        25.35042986
      ],
      "properties": {
        "datetime": "2018-09-08T04:19:45Z",
        "pc:count": 1826137,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97399.05822,
            "count": 1826137,
            "maximum": -97134.15804,
            "minimum": -97630.11804,
            "name": "X",
            "position": 0,
            "stddev": 136.2306776,
            "variance": 18558.79752
          },
          {
            "average": 2372238.568,
            "count": 1826137,
            "maximum": 2372460.36,
            "minimum": 2371986.9,
            "name": "Y",
            "position": 1,
            "stddev": 130.3914673,
            "variance": 17001.93475
          },
          {
            "average": 1.972952516,
            "count": 1826137,
            "maximum": 25.35042986,
            "minimum": -15.18957014,
            "name": "Z",
            "position": 2,
            "stddev": 1.167092886,
            "variance": 1.362105804
          },
          {
            "average": 18563.45464,
            "count": 1826137,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11690.17058,
            "variance": 136660088.1
          },
          {
            "average": 1.003763683,
            "count": 1826137,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06163443606,
            "variance": 0.003798803709
          },
          {
            "average": 1.007543246,
            "count": 1826137,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08737392275,
            "variance": 0.007634202377
          },
          {
            "average": 0.4953549487,
            "count": 1826137,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999785599,
            "variance": 0.2499785604
          },
          {
            "average": 0.0006291970427,
            "count": 1826137,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0250759147,
            "variance": 0.0006288014981
          },
          {
            "average": 6.785609732,
            "count": 1826137,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.292119515,
            "variance": 10.8380509
          },
          {
            "average": 2.695327596,
            "count": 1826137,
            "maximum": 16.27799988,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.673571224,
            "variance": 58.88369532
          },
          {
            "average": 0.508101528,
            "count": 1826137,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999344978,
            "variance": 0.2499345021
          },
          {
            "average": 405.1980706,
            "count": 1826137,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7095686978,
            "variance": 0.5034877369
          },
          {
            "average": 220414589.3,
            "count": 1826137,
            "maximum": 220415585.1,
            "minimum": 220413343.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 409.1638923,
            "variance": 167415.0908
          },
          {
            "average": 0.508101528,
            "count": 1826137,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999344978,
            "variance": 0.2499345021
          },
          {
            "average": 0,
            "count": 1826137,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1826137,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1826137,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1032950978,
            "count": 1826137,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3043440016,
            "variance": 0.09262527129
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97630.11804,
          2371986.9,
          -15.18957014,
          -97134.15804,
          2372460.36,
          25.35042986
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97630.11803684483,
                2371986.900478484,
                -15.189570137438615
              ],
              [
                -97630.11803684483,
                2372460.360478484,
                -15.189570137438615
              ],
              [
                -97134.15803684483,
                2372460.360478484,
                25.350429862561384
              ],
              [
                -97134.15803684483,
                2371986.900478484,
                25.350429862561384
              ],
              [
                -97630.11803684483,
                2371986.900478484,
                -15.189570137438615
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:19:45+00:00",
        "end_time": "2018-09-08T03:42:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2314.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2314.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2314.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2314.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6650418,
            71.32872472,
            -15.18957014,
            -156.6510022,
            71.33325444,
            25.35042986
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6645235375437,
                  71.32872471868657,
                  -15.189570137438615
                ],
                [
                  -156.6650417998176,
                  71.3330720592235,
                  -15.189570137438615
                ],
                [
                  -156.65151783428593,
                  71.33325444365508,
                  25.350429862561384
                ],
                [
                  -156.6510021963701,
                  71.32890706227856,
                  25.350429862561384
                ],
                [
                  -156.6645235375437,
                  71.32872471868657,
                  -15.189570137438615
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2314.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2314.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:19:45Z",
            "pc:count": 1826137,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97399.05822,
                "count": 1826137,
                "maximum": -97134.15804,
                "minimum": -97630.11804,
                "name": "X",
                "position": 0,
                "stddev": 136.2306776,
                "variance": 18558.79752
              },
              {
                "average": 2372238.568,
                "count": 1826137,
                "maximum": 2372460.36,
                "minimum": 2371986.9,
                "name": "Y",
                "position": 1,
                "stddev": 130.3914673,
                "variance": 17001.93475
              },
              {
                "average": 1.972952516,
                "count": 1826137,
                "maximum": 25.35042986,
                "minimum": -15.18957014,
                "name": "Z",
                "position": 2,
                "stddev": 1.167092886,
                "variance": 1.362105804
              },
              {
                "average": 18563.45464,
                "count": 1826137,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11690.17058,
                "variance": 136660088.1
              },
              {
                "average": 1.003763683,
                "count": 1826137,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06163443606,
                "variance": 0.003798803709
              },
              {
                "average": 1.007543246,
                "count": 1826137,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08737392275,
                "variance": 0.007634202377
              },
              {
                "average": 0.4953549487,
                "count": 1826137,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999785599,
                "variance": 0.2499785604
              },
              {
                "average": 0.0006291970427,
                "count": 1826137,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0250759147,
                "variance": 0.0006288014981
              },
              {
                "average": 6.785609732,
                "count": 1826137,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.292119515,
                "variance": 10.8380509
              },
              {
                "average": 2.695327596,
                "count": 1826137,
                "maximum": 16.27799988,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.673571224,
                "variance": 58.88369532
              },
              {
                "average": 0.508101528,
                "count": 1826137,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999344978,
                "variance": 0.2499345021
              },
              {
                "average": 405.1980706,
                "count": 1826137,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7095686978,
                "variance": 0.5034877369
              },
              {
                "average": 220414589.3,
                "count": 1826137,
                "maximum": 220415585.1,
                "minimum": 220413343.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 409.1638923,
                "variance": 167415.0908
              },
              {
                "average": 0.508101528,
                "count": 1826137,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999344978,
                "variance": 0.2499345021
              },
              {
                "average": 0,
                "count": 1826137,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1826137,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1826137,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1032950978,
                "count": 1826137,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3043440016,
                "variance": 0.09262527129
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97630.11804,
              2371986.9,
              -15.18957014,
              -97134.15804,
              2372460.36,
              25.35042986
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97630.11803684483,
                    2371986.900478484,
                    -15.189570137438615
                  ],
                  [
                    -97630.11803684483,
                    2372460.360478484,
                    -15.189570137438615
                  ],
                  [
                    -97134.15803684483,
                    2372460.360478484,
                    25.350429862561384
                  ],
                  [
                    -97134.15803684483,
                    2371986.900478484,
                    25.350429862561384
                  ],
                  [
                    -97630.11803684483,
                    2371986.900478484,
                    -15.189570137438615
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:19:45+00:00",
            "end_time": "2018-09-08T03:42:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2203.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64096140727148,
              71.29986328728577,
              3.023997798158836
            ],
            [
              -156.64147416674905,
              71.30420763533964,
              3.023997798158836
            ],
            [
              -156.62796744549766,
              71.30438836884385,
              3.863997798158836
            ],
            [
              -156.62745730243802,
              71.3000439804154,
              3.863997798158836
            ],
            [
              -156.64096140727148,
              71.29986328728577,
              3.023997798158836
            ]
          ]
        ]
      },
      "bbox": [
        -156.6414742,
        71.29986329,
        3.023997798,
        -156.6274573,
        71.30438837,
        3.863997798
      ],
      "properties": {
        "datetime": "2018-09-11T17:42:56Z",
        "pc:count": 2844738,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96655.69919,
            "count": 2844738,
            "maximum": -96396.15871,
            "minimum": -96892.11871,
            "name": "X",
            "position": 0,
            "stddev": 131.1640502,
            "variance": 17204.00806
          },
          {
            "average": 2369052.591,
            "count": 2844738,
            "maximum": 2369287.055,
            "minimum": 2368813.835,
            "name": "Y",
            "position": 1,
            "stddev": 128.7127152,
            "variance": 16566.96305
          },
          {
            "average": 3.398634963,
            "count": 2844738,
            "maximum": 3.863997798,
            "minimum": 3.023997798,
            "name": "Z",
            "position": 2,
            "stddev": 0.1195654154,
            "variance": 0.01429588856
          },
          {
            "average": 26801.85187,
            "count": 2844738,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11226.12119,
            "variance": 126025796.9
          },
          {
            "average": 1,
            "count": 2844738,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2844738,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.498880389,
            "count": 2844738,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999988344,
            "variance": 0.2499988344
          },
          {
            "average": 0.000473154294,
            "count": 2844738,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02174696727,
            "variance": 0.0004729305853
          },
          {
            "average": 1.613538048,
            "count": 2844738,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.863921166,
            "variance": 3.474202114
          },
          {
            "average": 0.3704940346,
            "count": 2844738,
            "maximum": 20.33399963,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51890076,
            "variance": 110.6472731
          },
          {
            "average": 0.4870807083,
            "count": 2844738,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998331519,
            "variance": 0.2498331797
          },
          {
            "average": 413.5485468,
            "count": 2844738,
            "maximum": 456,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 3.855229528,
            "variance": 14.86279471
          },
          {
            "average": 220421422.8,
            "count": 2844738,
            "maximum": 220722976.5,
            "minimum": 220417873.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 26591.79541,
            "variance": 707123583.3
          },
          {
            "average": 0.4870807083,
            "count": 2844738,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998331519,
            "variance": 0.2498331797
          },
          {
            "average": 0,
            "count": 2844738,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2844738,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2844738,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.231523606,
            "count": 2844738,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4218062214,
            "variance": 0.1779204884
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96892.11871,
          2368813.835,
          3.023997798,
          -96396.15871,
          2369287.055,
          3.863997798
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96892.11871126074,
                2368813.8348891935,
                3.023997798158836
              ],
              [
                -96892.11871126074,
                2369287.0548891933,
                3.023997798158836
              ],
              [
                -96396.15871126075,
                2369287.0548891933,
                3.863997798158836
              ],
              [
                -96396.15871126075,
                2368813.8348891935,
                3.863997798158836
              ],
              [
                -96892.11871126074,
                2368813.8348891935,
                3.023997798158836
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:42:56+00:00",
        "end_time": "2018-09-08T04:57:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2203.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2203.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2203.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2203.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6414742,
            71.29986329,
            3.023997798,
            -156.6274573,
            71.30438837,
            3.863997798
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64096140727148,
                  71.29986328728577,
                  3.023997798158836
                ],
                [
                  -156.64147416674905,
                  71.30420763533964,
                  3.023997798158836
                ],
                [
                  -156.62796744549766,
                  71.30438836884385,
                  3.863997798158836
                ],
                [
                  -156.62745730243802,
                  71.3000439804154,
                  3.863997798158836
                ],
                [
                  -156.64096140727148,
                  71.29986328728577,
                  3.023997798158836
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2203.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2203.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:42:56Z",
            "pc:count": 2844738,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96655.69919,
                "count": 2844738,
                "maximum": -96396.15871,
                "minimum": -96892.11871,
                "name": "X",
                "position": 0,
                "stddev": 131.1640502,
                "variance": 17204.00806
              },
              {
                "average": 2369052.591,
                "count": 2844738,
                "maximum": 2369287.055,
                "minimum": 2368813.835,
                "name": "Y",
                "position": 1,
                "stddev": 128.7127152,
                "variance": 16566.96305
              },
              {
                "average": 3.398634963,
                "count": 2844738,
                "maximum": 3.863997798,
                "minimum": 3.023997798,
                "name": "Z",
                "position": 2,
                "stddev": 0.1195654154,
                "variance": 0.01429588856
              },
              {
                "average": 26801.85187,
                "count": 2844738,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11226.12119,
                "variance": 126025796.9
              },
              {
                "average": 1,
                "count": 2844738,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2844738,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.498880389,
                "count": 2844738,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999988344,
                "variance": 0.2499988344
              },
              {
                "average": 0.000473154294,
                "count": 2844738,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02174696727,
                "variance": 0.0004729305853
              },
              {
                "average": 1.613538048,
                "count": 2844738,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.863921166,
                "variance": 3.474202114
              },
              {
                "average": 0.3704940346,
                "count": 2844738,
                "maximum": 20.33399963,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51890076,
                "variance": 110.6472731
              },
              {
                "average": 0.4870807083,
                "count": 2844738,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998331519,
                "variance": 0.2498331797
              },
              {
                "average": 413.5485468,
                "count": 2844738,
                "maximum": 456,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 3.855229528,
                "variance": 14.86279471
              },
              {
                "average": 220421422.8,
                "count": 2844738,
                "maximum": 220722976.5,
                "minimum": 220417873.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 26591.79541,
                "variance": 707123583.3
              },
              {
                "average": 0.4870807083,
                "count": 2844738,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998331519,
                "variance": 0.2498331797
              },
              {
                "average": 0,
                "count": 2844738,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2844738,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2844738,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.231523606,
                "count": 2844738,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4218062214,
                "variance": 0.1779204884
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96892.11871,
              2368813.835,
              3.023997798,
              -96396.15871,
              2369287.055,
              3.863997798
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96892.11871126074,
                    2368813.8348891935,
                    3.023997798158836
                  ],
                  [
                    -96892.11871126074,
                    2369287.0548891933,
                    3.023997798158836
                  ],
                  [
                    -96396.15871126075,
                    2369287.0548891933,
                    3.863997798158836
                  ],
                  [
                    -96396.15871126075,
                    2368813.8348891935,
                    3.863997798158836
                  ],
                  [
                    -96892.11871126074,
                    2368813.8348891935,
                    3.023997798158836
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:42:56+00:00",
            "end_time": "2018-09-08T04:57:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2309.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.562522562172,
              71.32387515768598,
              0.820323519521224
            ],
            [
              -156.56302105519526,
              71.32822408707884,
              0.820323519521224
            ],
            [
              -156.5494997523667,
              71.32839946263209,
              1.840323519521224
            ],
            [
              -156.54900388397806,
              71.32405049396581,
              1.840323519521224
            ],
            [
              -156.562522562172,
              71.32387515768598,
              0.820323519521224
            ]
          ]
        ]
      },
      "bbox": [
        -156.5630211,
        71.32387516,
        0.8203235195,
        -156.5490039,
        71.32839946,
        1.84032352
      ],
      "properties": {
        "datetime": "2018-09-11T17:27:33Z",
        "pc:count": 1986388,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93631.16403,
            "count": 1986388,
            "maximum": -93419.03711,
            "minimum": -93914.97711,
            "name": "X",
            "position": 0,
            "stddev": 122.9770076,
            "variance": 15123.34439
          },
          {
            "average": 2371552.846,
            "count": 1986388,
            "maximum": 2371786.084,
            "minimum": 2371312.464,
            "name": "Y",
            "position": 1,
            "stddev": 129.4620577,
            "variance": 16760.42438
          },
          {
            "average": 1.175443637,
            "count": 1986388,
            "maximum": 1.84032352,
            "minimum": 0.8203235195,
            "name": "Z",
            "position": 2,
            "stddev": 0.07750740268,
            "variance": 0.006007397471
          },
          {
            "average": 16131.64062,
            "count": 1986388,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13927.67232,
            "variance": 193980056.1
          },
          {
            "average": 1,
            "count": 1986388,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1986388,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.506169993,
            "count": 1986388,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999620556,
            "variance": 0.249962057
          },
          {
            "average": 0.0007148653737,
            "count": 1986388,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02672741478,
            "variance": 0.0007143547009
          },
          {
            "average": 7.293063591,
            "count": 1986388,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.945531963,
            "variance": 8.676158547
          },
          {
            "average": -3.239003747,
            "count": 1986388,
            "maximum": 16.30800056,
            "minimum": -19.53000069,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.212963426,
            "variance": 67.45276823
          },
          {
            "average": 0.4900301452,
            "count": 1986388,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999007179,
            "variance": 0.2499007278
          },
          {
            "average": 426.1219238,
            "count": 1986388,
            "maximum": 451,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.93929371,
            "variance": 321.8182587
          },
          {
            "average": 220524454.3,
            "count": 1986388,
            "maximum": 220722053.5,
            "minimum": 220417803.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 144346.9999,
            "variance": 20836056370.0
          },
          {
            "average": 0.4900301452,
            "count": 1986388,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999007179,
            "variance": 0.2499007278
          },
          {
            "average": 0,
            "count": 1986388,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1986388,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1986388,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03495288937,
            "count": 1986388,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1836605616,
            "variance": 0.03373120187
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93914.97711,
          2371312.464,
          0.8203235195,
          -93419.03711,
          2371786.084,
          1.84032352
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93914.97710655251,
                2371312.464332363,
                0.820323519521224
              ],
              [
                -93914.97710655251,
                2371786.084332363,
                0.820323519521224
              ],
              [
                -93419.03710655251,
                2371786.084332363,
                1.840323519521224
              ],
              [
                -93419.03710655251,
                2371312.464332363,
                1.840323519521224
              ],
              [
                -93914.97710655251,
                2371312.464332363,
                0.820323519521224
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:27:33+00:00",
        "end_time": "2018-09-08T04:56:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2309.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2309.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2309.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2309.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5630211,
            71.32387516,
            0.8203235195,
            -156.5490039,
            71.32839946,
            1.84032352
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.562522562172,
                  71.32387515768598,
                  0.820323519521224
                ],
                [
                  -156.56302105519526,
                  71.32822408707884,
                  0.820323519521224
                ],
                [
                  -156.5494997523667,
                  71.32839946263209,
                  1.840323519521224
                ],
                [
                  -156.54900388397806,
                  71.32405049396581,
                  1.840323519521224
                ],
                [
                  -156.562522562172,
                  71.32387515768598,
                  0.820323519521224
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2309.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2309.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:27:33Z",
            "pc:count": 1986388,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93631.16403,
                "count": 1986388,
                "maximum": -93419.03711,
                "minimum": -93914.97711,
                "name": "X",
                "position": 0,
                "stddev": 122.9770076,
                "variance": 15123.34439
              },
              {
                "average": 2371552.846,
                "count": 1986388,
                "maximum": 2371786.084,
                "minimum": 2371312.464,
                "name": "Y",
                "position": 1,
                "stddev": 129.4620577,
                "variance": 16760.42438
              },
              {
                "average": 1.175443637,
                "count": 1986388,
                "maximum": 1.84032352,
                "minimum": 0.8203235195,
                "name": "Z",
                "position": 2,
                "stddev": 0.07750740268,
                "variance": 0.006007397471
              },
              {
                "average": 16131.64062,
                "count": 1986388,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13927.67232,
                "variance": 193980056.1
              },
              {
                "average": 1,
                "count": 1986388,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1986388,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.506169993,
                "count": 1986388,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999620556,
                "variance": 0.249962057
              },
              {
                "average": 0.0007148653737,
                "count": 1986388,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02672741478,
                "variance": 0.0007143547009
              },
              {
                "average": 7.293063591,
                "count": 1986388,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.945531963,
                "variance": 8.676158547
              },
              {
                "average": -3.239003747,
                "count": 1986388,
                "maximum": 16.30800056,
                "minimum": -19.53000069,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.212963426,
                "variance": 67.45276823
              },
              {
                "average": 0.4900301452,
                "count": 1986388,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999007179,
                "variance": 0.2499007278
              },
              {
                "average": 426.1219238,
                "count": 1986388,
                "maximum": 451,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.93929371,
                "variance": 321.8182587
              },
              {
                "average": 220524454.3,
                "count": 1986388,
                "maximum": 220722053.5,
                "minimum": 220417803.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 144346.9999,
                "variance": 20836056370.0
              },
              {
                "average": 0.4900301452,
                "count": 1986388,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999007179,
                "variance": 0.2499007278
              },
              {
                "average": 0,
                "count": 1986388,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1986388,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1986388,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03495288937,
                "count": 1986388,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1836605616,
                "variance": 0.03373120187
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93914.97711,
              2371312.464,
              0.8203235195,
              -93419.03711,
              2371786.084,
              1.84032352
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93914.97710655251,
                    2371312.464332363,
                    0.820323519521224
                  ],
                  [
                    -93914.97710655251,
                    2371786.084332363,
                    0.820323519521224
                  ],
                  [
                    -93419.03710655251,
                    2371786.084332363,
                    1.840323519521224
                  ],
                  [
                    -93419.03710655251,
                    2371312.464332363,
                    1.840323519521224
                  ],
                  [
                    -93914.97710655251,
                    2371312.464332363,
                    0.820323519521224
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:27:33+00:00",
            "end_time": "2018-09-08T04:56:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2337.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65116174491246,
              71.33682613054087,
              -3.508655791907369
            ],
            [
              -156.65167766190103,
              71.34117429676286,
              -3.508655791907369
            ],
            [
              -156.6381503231513,
              71.34135575270693,
              18.111344208092632
            ],
            [
              -156.63763703252272,
              71.33700754582647,
              18.111344208092632
            ],
            [
              -156.65116174491246,
              71.33682613054087,
              -3.508655791907369
            ]
          ]
        ]
      },
      "bbox": [
        -156.6516777,
        71.33682613,
        -3.508655792,
        -156.637637,
        71.34135575,
        18.11134421
      ],
      "properties": {
        "datetime": "2018-09-08T04:11:28Z",
        "pc:count": 2417071,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96841.70696,
            "count": 2417071,
            "maximum": -96609.70878,
            "minimum": -97105.60878,
            "name": "X",
            "position": 0,
            "stddev": 133.0651583,
            "variance": 17706.33635
          },
          {
            "average": 2373067.682,
            "count": 2417071,
            "maximum": 2373321.711,
            "minimum": 2372848.191,
            "name": "Y",
            "position": 1,
            "stddev": 129.2674401,
            "variance": 16710.07106
          },
          {
            "average": 2.192186012,
            "count": 2417071,
            "maximum": 18.11134421,
            "minimum": -3.508655792,
            "name": "Z",
            "position": 2,
            "stddev": 1.296015849,
            "variance": 1.67965708
          },
          {
            "average": 15977.24945,
            "count": 2417071,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8744.12448,
            "variance": 76459712.92
          },
          {
            "average": 1.000001241,
            "count": 2417071,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001114078374,
            "variance": 1.241170622e-06
          },
          {
            "average": 1.000002482,
            "count": 2417071,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001575543768,
            "variance": 2.482338164e-06
          },
          {
            "average": 0.5033310978,
            "count": 2417071,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999890071,
            "variance": 0.2499890072
          },
          {
            "average": 0.0004770236373,
            "count": 2417071,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02183566539,
            "variance": 0.000476796283
          },
          {
            "average": 4.521272234,
            "count": 2417071,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.696029457,
            "variance": 13.66063375
          },
          {
            "average": 0.1300251873,
            "count": 2417071,
            "maximum": 16.33200073,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.286078079,
            "variance": 86.23124608
          },
          {
            "average": 0.5279646316,
            "count": 2417071,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992174701,
            "variance": 0.2492180825
          },
          {
            "average": 404.3660604,
            "count": 2417071,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8876318351,
            "variance": 0.7878902746
          },
          {
            "average": 220414123,
            "count": 2417071,
            "maximum": 220415088.6,
            "minimum": 220413320.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 500.3862394,
            "variance": 250386.3885
          },
          {
            "average": 0.5279646316,
            "count": 2417071,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992174701,
            "variance": 0.2492180825
          },
          {
            "average": 0,
            "count": 2417071,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2417071,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2417071,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1641557075,
            "count": 2417071,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.370416884,
            "variance": 0.1372086679
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97105.60878,
          2372848.191,
          -3.508655792,
          -96609.70878,
          2373321.711,
          18.11134421
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97105.60877739749,
                2372848.191124223,
                -3.508655791907369
              ],
              [
                -97105.60877739749,
                2373321.7111242227,
                -3.508655791907369
              ],
              [
                -96609.70877739749,
                2373321.7111242227,
                18.111344208092632
              ],
              [
                -96609.70877739749,
                2372848.191124223,
                18.111344208092632
              ],
              [
                -97105.60877739749,
                2372848.191124223,
                -3.508655791907369
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:11:28+00:00",
        "end_time": "2018-09-08T03:42:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2337.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2337.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2337.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2337.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6516777,
            71.33682613,
            -3.508655792,
            -156.637637,
            71.34135575,
            18.11134421
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65116174491246,
                  71.33682613054087,
                  -3.508655791907369
                ],
                [
                  -156.65167766190103,
                  71.34117429676286,
                  -3.508655791907369
                ],
                [
                  -156.6381503231513,
                  71.34135575270693,
                  18.111344208092632
                ],
                [
                  -156.63763703252272,
                  71.33700754582647,
                  18.111344208092632
                ],
                [
                  -156.65116174491246,
                  71.33682613054087,
                  -3.508655791907369
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2337.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2337.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:11:28Z",
            "pc:count": 2417071,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96841.70696,
                "count": 2417071,
                "maximum": -96609.70878,
                "minimum": -97105.60878,
                "name": "X",
                "position": 0,
                "stddev": 133.0651583,
                "variance": 17706.33635
              },
              {
                "average": 2373067.682,
                "count": 2417071,
                "maximum": 2373321.711,
                "minimum": 2372848.191,
                "name": "Y",
                "position": 1,
                "stddev": 129.2674401,
                "variance": 16710.07106
              },
              {
                "average": 2.192186012,
                "count": 2417071,
                "maximum": 18.11134421,
                "minimum": -3.508655792,
                "name": "Z",
                "position": 2,
                "stddev": 1.296015849,
                "variance": 1.67965708
              },
              {
                "average": 15977.24945,
                "count": 2417071,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8744.12448,
                "variance": 76459712.92
              },
              {
                "average": 1.000001241,
                "count": 2417071,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001114078374,
                "variance": 1.241170622e-06
              },
              {
                "average": 1.000002482,
                "count": 2417071,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001575543768,
                "variance": 2.482338164e-06
              },
              {
                "average": 0.5033310978,
                "count": 2417071,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999890071,
                "variance": 0.2499890072
              },
              {
                "average": 0.0004770236373,
                "count": 2417071,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02183566539,
                "variance": 0.000476796283
              },
              {
                "average": 4.521272234,
                "count": 2417071,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.696029457,
                "variance": 13.66063375
              },
              {
                "average": 0.1300251873,
                "count": 2417071,
                "maximum": 16.33200073,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.286078079,
                "variance": 86.23124608
              },
              {
                "average": 0.5279646316,
                "count": 2417071,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992174701,
                "variance": 0.2492180825
              },
              {
                "average": 404.3660604,
                "count": 2417071,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8876318351,
                "variance": 0.7878902746
              },
              {
                "average": 220414123,
                "count": 2417071,
                "maximum": 220415088.6,
                "minimum": 220413320.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 500.3862394,
                "variance": 250386.3885
              },
              {
                "average": 0.5279646316,
                "count": 2417071,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992174701,
                "variance": 0.2492180825
              },
              {
                "average": 0,
                "count": 2417071,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2417071,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2417071,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1641557075,
                "count": 2417071,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.370416884,
                "variance": 0.1372086679
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97105.60878,
              2372848.191,
              -3.508655792,
              -96609.70878,
              2373321.711,
              18.11134421
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97105.60877739749,
                    2372848.191124223,
                    -3.508655791907369
                  ],
                  [
                    -97105.60877739749,
                    2373321.7111242227,
                    -3.508655791907369
                  ],
                  [
                    -96609.70877739749,
                    2373321.7111242227,
                    18.111344208092632
                  ],
                  [
                    -96609.70877739749,
                    2372848.191124223,
                    18.111344208092632
                  ],
                  [
                    -97105.60877739749,
                    2372848.191124223,
                    -3.508655791907369
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:11:28+00:00",
            "end_time": "2018-09-08T03:42:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2181.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64124809229634,
              71.29576598044609,
              2.711983061518045
            ],
            [
              -156.64176131206034,
              71.30011443034526,
              2.711983061518045
            ],
            [
              -156.62825597305155,
              71.30029519315767,
              4.011983061518045
            ],
            [
              -156.62774537150034,
              71.29594670284878,
              4.011983061518045
            ],
            [
              -156.64124809229634,
              71.29576598044609,
              2.711983061518045
            ]
          ]
        ]
      },
      "bbox": [
        -156.6417613,
        71.29576598,
        2.711983062,
        -156.6277454,
        71.30029519,
        4.011983062
      ],
      "properties": {
        "datetime": "2018-09-11T17:42:57Z",
        "pc:count": 2926348,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96663.82111,
            "count": 2926348,
            "maximum": -96424.36322,
            "minimum": -96920.36322,
            "name": "X",
            "position": 0,
            "stddev": 138.7160093,
            "variance": 19242.13124
          },
          {
            "average": 2368601.817,
            "count": 2926348,
            "maximum": 2368842.316,
            "minimum": 2368368.636,
            "name": "Y",
            "position": 1,
            "stddev": 129.142183,
            "variance": 16677.70343
          },
          {
            "average": 3.315491441,
            "count": 2926348,
            "maximum": 4.011983062,
            "minimum": 2.711983062,
            "name": "Z",
            "position": 2,
            "stddev": 0.1899220819,
            "variance": 0.03607039718
          },
          {
            "average": 27135.54821,
            "count": 2926348,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 10284.8154,
            "variance": 105777427.8
          },
          {
            "average": 1,
            "count": 2926348,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2926348,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4999138858,
            "count": 2926348,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.500000078,
            "variance": 0.250000078
          },
          {
            "average": 0.0003690606859,
            "count": 2926348,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01920741019,
            "variance": 0.0003689246062
          },
          {
            "average": 1.663769996,
            "count": 2926348,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.593140396,
            "variance": 2.538096322
          },
          {
            "average": 1.762125556,
            "count": 2926348,
            "maximum": 20.33399963,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.66229464,
            "variance": 113.684527
          },
          {
            "average": 0.4983870681,
            "count": 2926348,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999974839,
            "variance": 0.2499974839
          },
          {
            "average": 417.4695029,
            "count": 2926348,
            "maximum": 456,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 11.47709692,
            "variance": 131.7237536
          },
          {
            "average": 220444124.4,
            "count": 2926348,
            "maximum": 220722977,
            "minimum": 220418407.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 82788.44755,
            "variance": 6853927048
          },
          {
            "average": 0.4983870681,
            "count": 2926348,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999974839,
            "variance": 0.2499974839
          },
          {
            "average": 0,
            "count": 2926348,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2926348,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2926348,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2344526352,
            "count": 2926348,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4236562974,
            "variance": 0.1794846584
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96920.36322,
          2368368.636,
          2.711983062,
          -96424.36322,
          2368842.316,
          4.011983062
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96920.36322095306,
                2368368.6356744096,
                2.711983061518045
              ],
              [
                -96920.36322095306,
                2368842.3156744093,
                2.711983061518045
              ],
              [
                -96424.36322095306,
                2368842.3156744093,
                4.011983061518045
              ],
              [
                -96424.36322095306,
                2368368.6356744096,
                4.011983061518045
              ],
              [
                -96920.36322095306,
                2368368.6356744096,
                2.711983061518045
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:42:57+00:00",
        "end_time": "2018-09-08T05:06:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2181.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2181.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2181.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2181.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6417613,
            71.29576598,
            2.711983062,
            -156.6277454,
            71.30029519,
            4.011983062
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64124809229634,
                  71.29576598044609,
                  2.711983061518045
                ],
                [
                  -156.64176131206034,
                  71.30011443034526,
                  2.711983061518045
                ],
                [
                  -156.62825597305155,
                  71.30029519315767,
                  4.011983061518045
                ],
                [
                  -156.62774537150034,
                  71.29594670284878,
                  4.011983061518045
                ],
                [
                  -156.64124809229634,
                  71.29576598044609,
                  2.711983061518045
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2181.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2181.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:42:57Z",
            "pc:count": 2926348,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96663.82111,
                "count": 2926348,
                "maximum": -96424.36322,
                "minimum": -96920.36322,
                "name": "X",
                "position": 0,
                "stddev": 138.7160093,
                "variance": 19242.13124
              },
              {
                "average": 2368601.817,
                "count": 2926348,
                "maximum": 2368842.316,
                "minimum": 2368368.636,
                "name": "Y",
                "position": 1,
                "stddev": 129.142183,
                "variance": 16677.70343
              },
              {
                "average": 3.315491441,
                "count": 2926348,
                "maximum": 4.011983062,
                "minimum": 2.711983062,
                "name": "Z",
                "position": 2,
                "stddev": 0.1899220819,
                "variance": 0.03607039718
              },
              {
                "average": 27135.54821,
                "count": 2926348,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 10284.8154,
                "variance": 105777427.8
              },
              {
                "average": 1,
                "count": 2926348,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2926348,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4999138858,
                "count": 2926348,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.500000078,
                "variance": 0.250000078
              },
              {
                "average": 0.0003690606859,
                "count": 2926348,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01920741019,
                "variance": 0.0003689246062
              },
              {
                "average": 1.663769996,
                "count": 2926348,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.593140396,
                "variance": 2.538096322
              },
              {
                "average": 1.762125556,
                "count": 2926348,
                "maximum": 20.33399963,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.66229464,
                "variance": 113.684527
              },
              {
                "average": 0.4983870681,
                "count": 2926348,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999974839,
                "variance": 0.2499974839
              },
              {
                "average": 417.4695029,
                "count": 2926348,
                "maximum": 456,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 11.47709692,
                "variance": 131.7237536
              },
              {
                "average": 220444124.4,
                "count": 2926348,
                "maximum": 220722977,
                "minimum": 220418407.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 82788.44755,
                "variance": 6853927048
              },
              {
                "average": 0.4983870681,
                "count": 2926348,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999974839,
                "variance": 0.2499974839
              },
              {
                "average": 0,
                "count": 2926348,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2926348,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2926348,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2344526352,
                "count": 2926348,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4236562974,
                "variance": 0.1794846584
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96920.36322,
              2368368.636,
              2.711983062,
              -96424.36322,
              2368842.316,
              4.011983062
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96920.36322095306,
                    2368368.6356744096,
                    2.711983061518045
                  ],
                  [
                    -96920.36322095306,
                    2368842.3156744093,
                    2.711983061518045
                  ],
                  [
                    -96424.36322095306,
                    2368842.3156744093,
                    4.011983061518045
                  ],
                  [
                    -96424.36322095306,
                    2368368.6356744096,
                    4.011983061518045
                  ],
                  [
                    -96920.36322095306,
                    2368368.6356744096,
                    2.711983061518045
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:42:57+00:00",
            "end_time": "2018-09-08T05:06:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2248.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56373927281507,
              71.30748847792923,
              0.933165196152061
            ],
            [
              -156.56423765831687,
              71.31183710449092,
              0.933165196152061
            ],
            [
              -156.55074751500652,
              71.31201226909923,
              38.67316519615206
            ],
            [
              -156.55025174627895,
              71.30766360335119,
              38.67316519615206
            ],
            [
              -156.56373927281507,
              71.30748847792923,
              0.933165196152061
            ]
          ]
        ]
      },
      "bbox": [
        -156.5642377,
        71.30748848,
        0.9331651962,
        -156.5502517,
        71.31201227,
        38.6731652
      ],
      "properties": {
        "datetime": "2018-09-11T17:35:56Z",
        "pc:count": 2365819,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93775.36168,
            "count": 2365819,
            "maximum": -93533.21569,
            "minimum": -94028.37569,
            "name": "X",
            "position": 0,
            "stddev": 138.8891884,
            "variance": 19290.20665
          },
          {
            "average": 2369739.255,
            "count": 2365819,
            "maximum": 2370005.766,
            "minimum": 2369532.126,
            "name": "Y",
            "position": 1,
            "stddev": 139.4732442,
            "variance": 19452.78585
          },
          {
            "average": 2.536360758,
            "count": 2365819,
            "maximum": 38.6731652,
            "minimum": 0.9331651962,
            "name": "Z",
            "position": 2,
            "stddev": 1.110694137,
            "variance": 1.233641467
          },
          {
            "average": 32524.89886,
            "count": 2365819,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 20159.84928,
            "variance": 406419523.1
          },
          {
            "average": 1,
            "count": 2365819,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2365819,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4918989999,
            "count": 2365819,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999344751,
            "variance": 0.2499344794
          },
          {
            "average": 0.000671226328,
            "count": 2365819,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02589934491,
            "variance": 0.0006707760667
          },
          {
            "average": 3.031586947,
            "count": 2365819,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.296192375,
            "variance": 10.86488417
          },
          {
            "average": 6.02360247,
            "count": 2365819,
            "maximum": 20.59199905,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.54345228,
            "variance": 111.164386
          },
          {
            "average": 0.5165204946,
            "count": 2365819,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997271043,
            "variance": 0.2497271788
          },
          {
            "average": 433.8464659,
            "count": 2365819,
            "maximum": 454,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.3087118,
            "variance": 335.2089278
          },
          {
            "average": 220560951.5,
            "count": 2365819,
            "maximum": 220722556.3,
            "minimum": 220419995.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 150329.6313,
            "variance": 22598998060.0
          },
          {
            "average": 0.5165204946,
            "count": 2365819,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997271043,
            "variance": 0.2497271788
          },
          {
            "average": 0,
            "count": 2365819,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2365819,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2365819,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1969034825,
            "count": 2365819,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3976588587,
            "variance": 0.1581325679
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94028.37569,
          2369532.126,
          0.9331651962,
          -93533.21569,
          2370005.766,
          38.6731652
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94028.37568674107,
                2369532.1264151945,
                0.933165196152061
              ],
              [
                -94028.37568674107,
                2370005.766415194,
                0.933165196152061
              ],
              [
                -93533.21568674107,
                2370005.766415194,
                38.67316519615206
              ],
              [
                -93533.21568674107,
                2369532.1264151945,
                38.67316519615206
              ],
              [
                -94028.37568674107,
                2369532.1264151945,
                0.933165196152061
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:35:56+00:00",
        "end_time": "2018-09-08T05:33:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2248.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2248.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2248.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2248.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5642377,
            71.30748848,
            0.9331651962,
            -156.5502517,
            71.31201227,
            38.6731652
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56373927281507,
                  71.30748847792923,
                  0.933165196152061
                ],
                [
                  -156.56423765831687,
                  71.31183710449092,
                  0.933165196152061
                ],
                [
                  -156.55074751500652,
                  71.31201226909923,
                  38.67316519615206
                ],
                [
                  -156.55025174627895,
                  71.30766360335119,
                  38.67316519615206
                ],
                [
                  -156.56373927281507,
                  71.30748847792923,
                  0.933165196152061
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2248.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2248.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:35:56Z",
            "pc:count": 2365819,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93775.36168,
                "count": 2365819,
                "maximum": -93533.21569,
                "minimum": -94028.37569,
                "name": "X",
                "position": 0,
                "stddev": 138.8891884,
                "variance": 19290.20665
              },
              {
                "average": 2369739.255,
                "count": 2365819,
                "maximum": 2370005.766,
                "minimum": 2369532.126,
                "name": "Y",
                "position": 1,
                "stddev": 139.4732442,
                "variance": 19452.78585
              },
              {
                "average": 2.536360758,
                "count": 2365819,
                "maximum": 38.6731652,
                "minimum": 0.9331651962,
                "name": "Z",
                "position": 2,
                "stddev": 1.110694137,
                "variance": 1.233641467
              },
              {
                "average": 32524.89886,
                "count": 2365819,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 20159.84928,
                "variance": 406419523.1
              },
              {
                "average": 1,
                "count": 2365819,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2365819,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4918989999,
                "count": 2365819,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999344751,
                "variance": 0.2499344794
              },
              {
                "average": 0.000671226328,
                "count": 2365819,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02589934491,
                "variance": 0.0006707760667
              },
              {
                "average": 3.031586947,
                "count": 2365819,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.296192375,
                "variance": 10.86488417
              },
              {
                "average": 6.02360247,
                "count": 2365819,
                "maximum": 20.59199905,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.54345228,
                "variance": 111.164386
              },
              {
                "average": 0.5165204946,
                "count": 2365819,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997271043,
                "variance": 0.2497271788
              },
              {
                "average": 433.8464659,
                "count": 2365819,
                "maximum": 454,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.3087118,
                "variance": 335.2089278
              },
              {
                "average": 220560951.5,
                "count": 2365819,
                "maximum": 220722556.3,
                "minimum": 220419995.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 150329.6313,
                "variance": 22598998060.0
              },
              {
                "average": 0.5165204946,
                "count": 2365819,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997271043,
                "variance": 0.2497271788
              },
              {
                "average": 0,
                "count": 2365819,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2365819,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2365819,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1969034825,
                "count": 2365819,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3976588587,
                "variance": 0.1581325679
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94028.37569,
              2369532.126,
              0.9331651962,
              -93533.21569,
              2370005.766,
              38.6731652
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94028.37568674107,
                    2369532.1264151945,
                    0.933165196152061
                  ],
                  [
                    -94028.37568674107,
                    2370005.766415194,
                    0.933165196152061
                  ],
                  [
                    -93533.21568674107,
                    2370005.766415194,
                    38.67316519615206
                  ],
                  [
                    -93533.21568674107,
                    2369532.1264151945,
                    38.67316519615206
                  ],
                  [
                    -94028.37568674107,
                    2369532.1264151945,
                    0.933165196152061
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:35:56+00:00",
            "end_time": "2018-09-08T05:33:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2260.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62732091186547,
              71.31206150023358,
              2.372606754336144
            ],
            [
              -156.6278316476326,
              71.31640918057126,
              2.372606754336144
            ],
            [
              -156.61431854160432,
              71.31658897886823,
              11.252606754336146
            ],
            [
              -156.61381042675382,
              71.31224125830568,
              11.252606754336146
            ],
            [
              -156.62732091186547,
              71.31206150023358,
              2.372606754336144
            ]
          ]
        ]
      },
      "bbox": [
        -156.6278316,
        71.3120615,
        2.372606754,
        -156.6138104,
        71.31658898,
        11.25260675
      ],
      "properties": {
        "datetime": "2018-09-08T05:15:57Z",
        "pc:count": 2952154,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96086.10346,
            "count": 2952154,
            "maximum": -95843.50565,
            "minimum": -96339.42565,
            "name": "X",
            "position": 0,
            "stddev": 132.402458,
            "variance": 17530.41089
          },
          {
            "average": 2370370.049,
            "count": 2952154,
            "maximum": 2370594.124,
            "minimum": 2370120.584,
            "name": "Y",
            "position": 1,
            "stddev": 127.7294906,
            "variance": 16314.82278
          },
          {
            "average": 2.635778398,
            "count": 2952154,
            "maximum": 11.25260675,
            "minimum": 2.372606754,
            "name": "Z",
            "position": 2,
            "stddev": 0.08846733868,
            "variance": 0.007826470014
          },
          {
            "average": 25814.99265,
            "count": 2952154,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7519.043716,
            "variance": 56536018.4
          },
          {
            "average": 1.000010162,
            "count": 2952154,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003187784758,
            "variance": 1.016197167e-05
          },
          {
            "average": 1.000020324,
            "count": 2952154,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004508185532,
            "variance": 2.03237368e-05
          },
          {
            "average": 0.4993665642,
            "count": 2952154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996834,
            "variance": 0.2499996834
          },
          {
            "average": 0.0004498410313,
            "count": 2952154,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02120468879,
            "variance": 0.0004496388267
          },
          {
            "average": 1.386118407,
            "count": 2952154,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9539872679,
            "variance": 0.9100917073
          },
          {
            "average": -0.5210951002,
            "count": 2952154,
            "maximum": 16.32600021,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.33494879,
            "variance": 106.8111665
          },
          {
            "average": 0.4639930708,
            "count": 2952154,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987019002,
            "variance": 0.2487035853
          },
          {
            "average": 411.3275652,
            "count": 2952154,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9546996218,
            "variance": 0.9114513678
          },
          {
            "average": 220418049.2,
            "count": 2952154,
            "maximum": 220418957.9,
            "minimum": 220417315.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 527.4583054,
            "variance": 278212.2639
          },
          {
            "average": 0.4639930708,
            "count": 2952154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987019002,
            "variance": 0.2487035853
          },
          {
            "average": 0,
            "count": 2952154,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2952154,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2952154,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2212144082,
            "count": 2952154,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4150646361,
            "variance": 0.1722786522
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96339.42565,
          2370120.584,
          2.372606754,
          -95843.50565,
          2370594.124,
          11.25260675
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96339.42564501827,
                2370120.584041798,
                2.372606754336144
              ],
              [
                -96339.42564501827,
                2370594.124041798,
                2.372606754336144
              ],
              [
                -95843.50564501826,
                2370594.124041798,
                11.252606754336146
              ],
              [
                -95843.50564501826,
                2370120.584041798,
                11.252606754336146
              ],
              [
                -96339.42564501827,
                2370120.584041798,
                2.372606754336144
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:15:57+00:00",
        "end_time": "2018-09-08T04:48:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2260.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2260.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2260.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2260.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6278316,
            71.3120615,
            2.372606754,
            -156.6138104,
            71.31658898,
            11.25260675
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62732091186547,
                  71.31206150023358,
                  2.372606754336144
                ],
                [
                  -156.6278316476326,
                  71.31640918057126,
                  2.372606754336144
                ],
                [
                  -156.61431854160432,
                  71.31658897886823,
                  11.252606754336146
                ],
                [
                  -156.61381042675382,
                  71.31224125830568,
                  11.252606754336146
                ],
                [
                  -156.62732091186547,
                  71.31206150023358,
                  2.372606754336144
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2260.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2260.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:15:57Z",
            "pc:count": 2952154,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96086.10346,
                "count": 2952154,
                "maximum": -95843.50565,
                "minimum": -96339.42565,
                "name": "X",
                "position": 0,
                "stddev": 132.402458,
                "variance": 17530.41089
              },
              {
                "average": 2370370.049,
                "count": 2952154,
                "maximum": 2370594.124,
                "minimum": 2370120.584,
                "name": "Y",
                "position": 1,
                "stddev": 127.7294906,
                "variance": 16314.82278
              },
              {
                "average": 2.635778398,
                "count": 2952154,
                "maximum": 11.25260675,
                "minimum": 2.372606754,
                "name": "Z",
                "position": 2,
                "stddev": 0.08846733868,
                "variance": 0.007826470014
              },
              {
                "average": 25814.99265,
                "count": 2952154,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7519.043716,
                "variance": 56536018.4
              },
              {
                "average": 1.000010162,
                "count": 2952154,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003187784758,
                "variance": 1.016197167e-05
              },
              {
                "average": 1.000020324,
                "count": 2952154,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004508185532,
                "variance": 2.03237368e-05
              },
              {
                "average": 0.4993665642,
                "count": 2952154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996834,
                "variance": 0.2499996834
              },
              {
                "average": 0.0004498410313,
                "count": 2952154,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02120468879,
                "variance": 0.0004496388267
              },
              {
                "average": 1.386118407,
                "count": 2952154,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9539872679,
                "variance": 0.9100917073
              },
              {
                "average": -0.5210951002,
                "count": 2952154,
                "maximum": 16.32600021,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.33494879,
                "variance": 106.8111665
              },
              {
                "average": 0.4639930708,
                "count": 2952154,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987019002,
                "variance": 0.2487035853
              },
              {
                "average": 411.3275652,
                "count": 2952154,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9546996218,
                "variance": 0.9114513678
              },
              {
                "average": 220418049.2,
                "count": 2952154,
                "maximum": 220418957.9,
                "minimum": 220417315.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 527.4583054,
                "variance": 278212.2639
              },
              {
                "average": 0.4639930708,
                "count": 2952154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987019002,
                "variance": 0.2487035853
              },
              {
                "average": 0,
                "count": 2952154,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2952154,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2952154,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2212144082,
                "count": 2952154,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4150646361,
                "variance": 0.1722786522
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96339.42565,
              2370120.584,
              2.372606754,
              -95843.50565,
              2370594.124,
              11.25260675
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96339.42564501827,
                    2370120.584041798,
                    2.372606754336144
                  ],
                  [
                    -96339.42564501827,
                    2370594.124041798,
                    2.372606754336144
                  ],
                  [
                    -95843.50564501826,
                    2370594.124041798,
                    11.252606754336146
                  ],
                  [
                    -95843.50564501826,
                    2370120.584041798,
                    11.252606754336146
                  ],
                  [
                    -96339.42564501827,
                    2370120.584041798,
                    2.372606754336144
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:15:57+00:00",
            "end_time": "2018-09-08T04:48:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2310.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.54975976228002,
              71.32393383136538,
              0.814924112892099
            ],
            [
              -156.5502378632083,
              71.32812577360815,
              0.814924112892099
            ],
            [
              -156.54508225237228,
              71.32819241868893,
              1.794924112892099
            ],
            [
              -156.54460511608738,
              71.32400046206051,
              1.794924112892099
            ],
            [
              -156.54975976228002,
              71.32393383136538,
              0.814924112892099
            ]
          ]
        ]
      },
      "bbox": [
        -156.5502379,
        71.32393383,
        0.8149241129,
        -156.5446051,
        71.32819242,
        1.794924113
      ],
      "properties": {
        "datetime": "2018-09-11T17:27:28Z",
        "pc:count": 465722,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93376.48898,
            "count": 465722,
            "maximum": -93258.11318,
            "minimum": -93447.21318,
            "name": "X",
            "position": 0,
            "stddev": 40.15772454,
            "variance": 1612.64284
          },
          {
            "average": 2371472.922,
            "count": 465722,
            "maximum": 2371757.361,
            "minimum": 2371300.841,
            "name": "Y",
            "position": 1,
            "stddev": 109.250404,
            "variance": 11935.65078
          },
          {
            "average": 1.156711767,
            "count": 465722,
            "maximum": 1.794924113,
            "minimum": 0.8149241129,
            "name": "Z",
            "position": 2,
            "stddev": 0.08345562388,
            "variance": 0.006964841157
          },
          {
            "average": 17801.74273,
            "count": 465722,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13866.08878,
            "variance": 192268418.2
          },
          {
            "average": 1,
            "count": 465722,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 465722,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4974770357,
            "count": 465722,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999941714,
            "variance": 0.2499941714
          },
          {
            "average": 0.000742932479,
            "count": 465722,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02724669016,
            "variance": 0.0007423821244
          },
          {
            "average": 7.19301214,
            "count": 465722,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.040502485,
            "variance": 9.24465536
          },
          {
            "average": 0.1982219266,
            "count": 465722,
            "maximum": 14.97599983,
            "minimum": -19.2840004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.053244718,
            "variance": 64.85475049
          },
          {
            "average": 0.4858413388,
            "count": 465722,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998000287,
            "variance": 0.2498000687
          },
          {
            "average": 425.1421578,
            "count": 465722,
            "maximum": 451,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.1940081,
            "variance": 295.6339145
          },
          {
            "average": 220513493.8,
            "count": 465722,
            "maximum": 220722048,
            "minimum": 220418482,
            "name": "GpsTime",
            "position": 12,
            "stddev": 140145.3259,
            "variance": 19640712370.0
          },
          {
            "average": 0.4858413388,
            "count": 465722,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998000287,
            "variance": 0.2498000687
          },
          {
            "average": 0,
            "count": 465722,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 465722,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 465722,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03244854226,
            "count": 465722,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1771883229,
            "variance": 0.03139570178
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93447.21318,
          2371300.841,
          0.8149241129,
          -93258.11318,
          2371757.361,
          1.794924113
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93447.21317535828,
                2371300.841269226,
                0.814924112892099
              ],
              [
                -93447.21317535828,
                2371757.3612692254,
                0.814924112892099
              ],
              [
                -93258.11317535827,
                2371757.3612692254,
                1.794924112892099
              ],
              [
                -93258.11317535827,
                2371300.841269226,
                1.794924112892099
              ],
              [
                -93447.21317535828,
                2371300.841269226,
                0.814924112892099
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:27:28+00:00",
        "end_time": "2018-09-08T05:08:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2310.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2310.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2310.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2310.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5502379,
            71.32393383,
            0.8149241129,
            -156.5446051,
            71.32819242,
            1.794924113
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.54975976228002,
                  71.32393383136538,
                  0.814924112892099
                ],
                [
                  -156.5502378632083,
                  71.32812577360815,
                  0.814924112892099
                ],
                [
                  -156.54508225237228,
                  71.32819241868893,
                  1.794924112892099
                ],
                [
                  -156.54460511608738,
                  71.32400046206051,
                  1.794924112892099
                ],
                [
                  -156.54975976228002,
                  71.32393383136538,
                  0.814924112892099
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2310.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2310.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:27:28Z",
            "pc:count": 465722,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93376.48898,
                "count": 465722,
                "maximum": -93258.11318,
                "minimum": -93447.21318,
                "name": "X",
                "position": 0,
                "stddev": 40.15772454,
                "variance": 1612.64284
              },
              {
                "average": 2371472.922,
                "count": 465722,
                "maximum": 2371757.361,
                "minimum": 2371300.841,
                "name": "Y",
                "position": 1,
                "stddev": 109.250404,
                "variance": 11935.65078
              },
              {
                "average": 1.156711767,
                "count": 465722,
                "maximum": 1.794924113,
                "minimum": 0.8149241129,
                "name": "Z",
                "position": 2,
                "stddev": 0.08345562388,
                "variance": 0.006964841157
              },
              {
                "average": 17801.74273,
                "count": 465722,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13866.08878,
                "variance": 192268418.2
              },
              {
                "average": 1,
                "count": 465722,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 465722,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4974770357,
                "count": 465722,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999941714,
                "variance": 0.2499941714
              },
              {
                "average": 0.000742932479,
                "count": 465722,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02724669016,
                "variance": 0.0007423821244
              },
              {
                "average": 7.19301214,
                "count": 465722,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.040502485,
                "variance": 9.24465536
              },
              {
                "average": 0.1982219266,
                "count": 465722,
                "maximum": 14.97599983,
                "minimum": -19.2840004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.053244718,
                "variance": 64.85475049
              },
              {
                "average": 0.4858413388,
                "count": 465722,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998000287,
                "variance": 0.2498000687
              },
              {
                "average": 425.1421578,
                "count": 465722,
                "maximum": 451,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.1940081,
                "variance": 295.6339145
              },
              {
                "average": 220513493.8,
                "count": 465722,
                "maximum": 220722048,
                "minimum": 220418482,
                "name": "GpsTime",
                "position": 12,
                "stddev": 140145.3259,
                "variance": 19640712370.0
              },
              {
                "average": 0.4858413388,
                "count": 465722,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998000287,
                "variance": 0.2498000687
              },
              {
                "average": 0,
                "count": 465722,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 465722,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 465722,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03244854226,
                "count": 465722,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1771883229,
                "variance": 0.03139570178
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93447.21318,
              2371300.841,
              0.8149241129,
              -93258.11318,
              2371757.361,
              1.794924113
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93447.21317535828,
                    2371300.841269226,
                    0.814924112892099
                  ],
                  [
                    -93447.21317535828,
                    2371757.3612692254,
                    0.814924112892099
                  ],
                  [
                    -93258.11317535827,
                    2371757.3612692254,
                    1.794924112892099
                  ],
                  [
                    -93258.11317535827,
                    2371300.841269226,
                    1.794924112892099
                  ],
                  [
                    -93447.21317535828,
                    2371300.841269226,
                    0.814924112892099
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:27:28+00:00",
            "end_time": "2018-09-08T05:08:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2357.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.59940007894178,
              71.3446480253644,
              -14.71519743738446
            ],
            [
              -156.5999058274347,
              71.3489941697474,
              -14.71519743738446
            ],
            [
              -156.58636679094937,
              71.34917217086435,
              20.764802562615543
            ],
            [
              -156.58586367080642,
              71.34482598659757,
              20.764802562615543
            ],
            [
              -156.59940007894178,
              71.3446480253644,
              -14.71519743738446
            ]
          ]
        ]
      },
      "bbox": [
        -156.5999058,
        71.34464803,
        -14.71519744,
        -156.5858637,
        71.34917217,
        20.76480256
      ],
      "properties": {
        "datetime": "2018-09-08T04:30:42Z",
        "pc:count": 2385666,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94930.09056,
            "count": 2385666,
            "maximum": -94681.23734,
            "minimum": -95177.37734,
            "name": "X",
            "position": 0,
            "stddev": 130.9316741,
            "variance": 17143.10328
          },
          {
            "average": 2373862.875,
            "count": 2385666,
            "maximum": 2374096.976,
            "minimum": 2373623.716,
            "name": "Y",
            "position": 1,
            "stddev": 125.9766732,
            "variance": 15870.12219
          },
          {
            "average": 1.71521275,
            "count": 2385666,
            "maximum": 20.76480256,
            "minimum": -14.71519744,
            "name": "Z",
            "position": 2,
            "stddev": 0.7317450198,
            "variance": 0.5354507741
          },
          {
            "average": 21234.84369,
            "count": 2385666,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12506.35203,
            "variance": 156408841
          },
          {
            "average": 1.000821993,
            "count": 2385666,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02865863495,
            "variance": 0.0008213173569
          },
          {
            "average": 1.001642728,
            "count": 2385666,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04049728375,
            "variance": 0.001640029991
          },
          {
            "average": 0.500342462,
            "count": 2385666,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999875,
            "variance": 0.2499999875
          },
          {
            "average": 0.0004082717363,
            "count": 2385666,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02020161433,
            "variance": 0.0004081052215
          },
          {
            "average": 3.578192421,
            "count": 2385666,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.459586456,
            "variance": 11.96873845
          },
          {
            "average": -0.2334078713,
            "count": 2385666,
            "maximum": 16.27199936,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.436761505,
            "variance": 89.05246771
          },
          {
            "average": 0.4762473037,
            "count": 2385666,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994355954,
            "variance": 0.249435914
          },
          {
            "average": 405.9890475,
            "count": 2385666,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7885201885,
            "variance": 0.6217640877
          },
          {
            "average": 220415020.7,
            "count": 2385666,
            "maximum": 220416242.4,
            "minimum": 220413983.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 451.2587341,
            "variance": 203634.4451
          },
          {
            "average": 0.4762473037,
            "count": 2385666,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994355954,
            "variance": 0.249435914
          },
          {
            "average": 0,
            "count": 2385666,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2385666,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2385666,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1506979602,
            "count": 2385666,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3577542993,
            "variance": 0.1279881387
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95177.37734,
          2373623.716,
          -14.71519744,
          -94681.23734,
          2374096.976,
          20.76480256
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95177.37734042184,
                2373623.7162263663,
                -14.71519743738446
              ],
              [
                -95177.37734042184,
                2374096.976226366,
                -14.71519743738446
              ],
              [
                -94681.23734042182,
                2374096.976226366,
                20.764802562615543
              ],
              [
                -94681.23734042182,
                2373623.7162263663,
                20.764802562615543
              ],
              [
                -95177.37734042184,
                2373623.7162263663,
                -14.71519743738446
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:30:42+00:00",
        "end_time": "2018-09-08T03:53:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2357.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2357.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2357.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2357.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5999058,
            71.34464803,
            -14.71519744,
            -156.5858637,
            71.34917217,
            20.76480256
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.59940007894178,
                  71.3446480253644,
                  -14.71519743738446
                ],
                [
                  -156.5999058274347,
                  71.3489941697474,
                  -14.71519743738446
                ],
                [
                  -156.58636679094937,
                  71.34917217086435,
                  20.764802562615543
                ],
                [
                  -156.58586367080642,
                  71.34482598659757,
                  20.764802562615543
                ],
                [
                  -156.59940007894178,
                  71.3446480253644,
                  -14.71519743738446
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2357.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2357.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:30:42Z",
            "pc:count": 2385666,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94930.09056,
                "count": 2385666,
                "maximum": -94681.23734,
                "minimum": -95177.37734,
                "name": "X",
                "position": 0,
                "stddev": 130.9316741,
                "variance": 17143.10328
              },
              {
                "average": 2373862.875,
                "count": 2385666,
                "maximum": 2374096.976,
                "minimum": 2373623.716,
                "name": "Y",
                "position": 1,
                "stddev": 125.9766732,
                "variance": 15870.12219
              },
              {
                "average": 1.71521275,
                "count": 2385666,
                "maximum": 20.76480256,
                "minimum": -14.71519744,
                "name": "Z",
                "position": 2,
                "stddev": 0.7317450198,
                "variance": 0.5354507741
              },
              {
                "average": 21234.84369,
                "count": 2385666,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12506.35203,
                "variance": 156408841
              },
              {
                "average": 1.000821993,
                "count": 2385666,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02865863495,
                "variance": 0.0008213173569
              },
              {
                "average": 1.001642728,
                "count": 2385666,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04049728375,
                "variance": 0.001640029991
              },
              {
                "average": 0.500342462,
                "count": 2385666,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999875,
                "variance": 0.2499999875
              },
              {
                "average": 0.0004082717363,
                "count": 2385666,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02020161433,
                "variance": 0.0004081052215
              },
              {
                "average": 3.578192421,
                "count": 2385666,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.459586456,
                "variance": 11.96873845
              },
              {
                "average": -0.2334078713,
                "count": 2385666,
                "maximum": 16.27199936,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.436761505,
                "variance": 89.05246771
              },
              {
                "average": 0.4762473037,
                "count": 2385666,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994355954,
                "variance": 0.249435914
              },
              {
                "average": 405.9890475,
                "count": 2385666,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7885201885,
                "variance": 0.6217640877
              },
              {
                "average": 220415020.7,
                "count": 2385666,
                "maximum": 220416242.4,
                "minimum": 220413983.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 451.2587341,
                "variance": 203634.4451
              },
              {
                "average": 0.4762473037,
                "count": 2385666,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994355954,
                "variance": 0.249435914
              },
              {
                "average": 0,
                "count": 2385666,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2385666,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2385666,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1506979602,
                "count": 2385666,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3577542993,
                "variance": 0.1279881387
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95177.37734,
              2373623.716,
              -14.71519744,
              -94681.23734,
              2374096.976,
              20.76480256
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95177.37734042184,
                    2373623.7162263663,
                    -14.71519743738446
                  ],
                  [
                    -95177.37734042184,
                    2374096.976226366,
                    -14.71519743738446
                  ],
                  [
                    -94681.23734042182,
                    2374096.976226366,
                    20.764802562615543
                  ],
                  [
                    -94681.23734042182,
                    2373623.7162263663,
                    20.764802562615543
                  ],
                  [
                    -95177.37734042184,
                    2373623.7162263663,
                    -14.71519743738446
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:30:42+00:00",
            "end_time": "2018-09-08T03:53:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2316.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63894919572482,
              71.32854078889295,
              0.927722638930086
            ],
            [
              -156.63946259051355,
              71.33288910912191,
              0.927722638930086
            ],
            [
              -156.62593743779334,
              71.33306975379077,
              2.787722638930086
            ],
            [
              -156.62542666824683,
              71.32872139310315,
              2.787722638930086
            ],
            [
              -156.63894919572482,
              71.32854078889295,
              0.927722638930086
            ]
          ]
        ]
      },
      "bbox": [
        -156.6394626,
        71.32854079,
        0.9277226389,
        -156.6254267,
        71.33306975,
        2.787722639
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:38Z",
        "pc:count": 1822015,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96456.55705,
            "count": 1822015,
            "maximum": -96198.34598,
            "minimum": -96694.34598,
            "name": "X",
            "position": 0,
            "stddev": 137.9973041,
            "variance": 19043.25593
          },
          {
            "average": 2372156.113,
            "count": 1822015,
            "maximum": 2372403.044,
            "minimum": 2371929.484,
            "name": "Y",
            "position": 1,
            "stddev": 131.1873203,
            "variance": 17210.11302
          },
          {
            "average": 1.183049401,
            "count": 1822015,
            "maximum": 2.787722639,
            "minimum": 0.9277226389,
            "name": "Z",
            "position": 2,
            "stddev": 0.2045516197,
            "variance": 0.04184136512
          },
          {
            "average": 18885.10437,
            "count": 1822015,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13234.69444,
            "variance": 175157136.8
          },
          {
            "average": 1,
            "count": 1822015,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1822015,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5021144173,
            "count": 1822015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999956664,
            "variance": 0.2499956664
          },
          {
            "average": 0.0005784804187,
            "count": 1822015,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02404466877,
            "variance": 0.0005781460964
          },
          {
            "average": 7.637231856,
            "count": 1822015,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.701125142,
            "variance": 7.296077035
          },
          {
            "average": -0.3240313759,
            "count": 1822015,
            "maximum": 16.33799934,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.270652005,
            "variance": 52.86238058
          },
          {
            "average": 0.4910206557,
            "count": 1822015,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999195021,
            "variance": 0.2499195085
          },
          {
            "average": 406.8968055,
            "count": 1822015,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.710004599,
            "variance": 0.5041065306
          },
          {
            "average": 220415544.4,
            "count": 1822015,
            "maximum": 220416718.8,
            "minimum": 220414437.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 397.3417701,
            "variance": 157880.4823
          },
          {
            "average": 0.4910206557,
            "count": 1822015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999195021,
            "variance": 0.2499195085
          },
          {
            "average": 0,
            "count": 1822015,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1822015,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1822015,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04113851972,
            "count": 1822015,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1986105827,
            "variance": 0.03944616356
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96694.34598,
          2371929.484,
          0.9277226389,
          -96198.34598,
          2372403.044,
          2.787722639
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96694.3459833448,
                2371929.4844645616,
                0.927722638930086
              ],
              [
                -96694.3459833448,
                2372403.044464561,
                0.927722638930086
              ],
              [
                -96198.3459833448,
                2372403.044464561,
                2.787722638930086
              ],
              [
                -96198.3459833448,
                2371929.4844645616,
                2.787722638930086
              ],
              [
                -96694.3459833448,
                2371929.4844645616,
                0.927722638930086
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:38+00:00",
        "end_time": "2018-09-08T04:00:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2316.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2316.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2316.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2316.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6394626,
            71.32854079,
            0.9277226389,
            -156.6254267,
            71.33306975,
            2.787722639
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63894919572482,
                  71.32854078889295,
                  0.927722638930086
                ],
                [
                  -156.63946259051355,
                  71.33288910912191,
                  0.927722638930086
                ],
                [
                  -156.62593743779334,
                  71.33306975379077,
                  2.787722638930086
                ],
                [
                  -156.62542666824683,
                  71.32872139310315,
                  2.787722638930086
                ],
                [
                  -156.63894919572482,
                  71.32854078889295,
                  0.927722638930086
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2316.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2316.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:38Z",
            "pc:count": 1822015,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96456.55705,
                "count": 1822015,
                "maximum": -96198.34598,
                "minimum": -96694.34598,
                "name": "X",
                "position": 0,
                "stddev": 137.9973041,
                "variance": 19043.25593
              },
              {
                "average": 2372156.113,
                "count": 1822015,
                "maximum": 2372403.044,
                "minimum": 2371929.484,
                "name": "Y",
                "position": 1,
                "stddev": 131.1873203,
                "variance": 17210.11302
              },
              {
                "average": 1.183049401,
                "count": 1822015,
                "maximum": 2.787722639,
                "minimum": 0.9277226389,
                "name": "Z",
                "position": 2,
                "stddev": 0.2045516197,
                "variance": 0.04184136512
              },
              {
                "average": 18885.10437,
                "count": 1822015,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13234.69444,
                "variance": 175157136.8
              },
              {
                "average": 1,
                "count": 1822015,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1822015,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5021144173,
                "count": 1822015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999956664,
                "variance": 0.2499956664
              },
              {
                "average": 0.0005784804187,
                "count": 1822015,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02404466877,
                "variance": 0.0005781460964
              },
              {
                "average": 7.637231856,
                "count": 1822015,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.701125142,
                "variance": 7.296077035
              },
              {
                "average": -0.3240313759,
                "count": 1822015,
                "maximum": 16.33799934,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.270652005,
                "variance": 52.86238058
              },
              {
                "average": 0.4910206557,
                "count": 1822015,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999195021,
                "variance": 0.2499195085
              },
              {
                "average": 406.8968055,
                "count": 1822015,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.710004599,
                "variance": 0.5041065306
              },
              {
                "average": 220415544.4,
                "count": 1822015,
                "maximum": 220416718.8,
                "minimum": 220414437.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 397.3417701,
                "variance": 157880.4823
              },
              {
                "average": 0.4910206557,
                "count": 1822015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999195021,
                "variance": 0.2499195085
              },
              {
                "average": 0,
                "count": 1822015,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1822015,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1822015,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04113851972,
                "count": 1822015,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1986105827,
                "variance": 0.03944616356
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96694.34598,
              2371929.484,
              0.9277226389,
              -96198.34598,
              2372403.044,
              2.787722639
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96694.3459833448,
                    2371929.4844645616,
                    0.927722638930086
                  ],
                  [
                    -96694.3459833448,
                    2372403.044464561,
                    0.927722638930086
                  ],
                  [
                    -96198.3459833448,
                    2372403.044464561,
                    2.787722638930086
                  ],
                  [
                    -96198.3459833448,
                    2371929.4844645616,
                    2.787722638930086
                  ],
                  [
                    -96694.3459833448,
                    2371929.4844645616,
                    0.927722638930086
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:38+00:00",
            "end_time": "2018-09-08T04:00:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2311.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69821749886088,
              71.32905622320044,
              0.869488988299233
            ],
            [
              -156.69847823177605,
              71.33121615689214,
              0.869488988299233
            ],
            [
              -156.6899905251707,
              71.33133218044831,
              1.429488988299233
            ],
            [
              -156.68973061055908,
              71.32917223384857,
              1.429488988299233
            ],
            [
              -156.69821749886088,
              71.32905622320044,
              0.869488988299233
            ]
          ]
        ]
      },
      "bbox": [
        -156.6984782,
        71.32905622,
        0.8694889883,
        -156.6897306,
        71.33133218,
        1.429488988
      ],
      "properties": {
        "datetime": "2018-09-08T03:52:03Z",
        "pc:count": 273956,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98661.59872,
            "count": 273956,
            "maximum": -98551.24934,
            "minimum": -98862.54934,
            "name": "X",
            "position": 0,
            "stddev": 73.03269217,
            "variance": 5333.774126
          },
          {
            "average": 2372157.577,
            "count": 273956,
            "maximum": 2372308.032,
            "minimum": 2372072.792,
            "name": "Y",
            "position": 1,
            "stddev": 54.11164096,
            "variance": 2928.069688
          },
          {
            "average": 1.146595129,
            "count": 273956,
            "maximum": 1.429488988,
            "minimum": 0.8694889883,
            "name": "Z",
            "position": 2,
            "stddev": 0.06410188016,
            "variance": 0.00410905104
          },
          {
            "average": 13598.2132,
            "count": 273956,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9770.205714,
            "variance": 95456919.7
          },
          {
            "average": 1,
            "count": 273956,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 273956,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.493185037,
            "count": 273956,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999544666,
            "variance": 0.2499544687
          },
          {
            "average": 0.0006132371622,
            "count": 273956,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02475607682,
            "variance": 0.0006128633394
          },
          {
            "average": 7.593248551,
            "count": 273956,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.496560663,
            "variance": 6.232815143
          },
          {
            "average": 3.030928682,
            "count": 273956,
            "maximum": 13.41600037,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.355940578,
            "variance": 54.10986179
          },
          {
            "average": 0.49207902,
            "count": 273956,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999381666,
            "variance": 0.2499381704
          },
          {
            "average": 403.2360598,
            "count": 273956,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6499270611,
            "variance": 0.4224051848
          },
          {
            "average": 220413496.7,
            "count": 273956,
            "maximum": 220413923.4,
            "minimum": 220412825.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 357.1535479,
            "variance": 127558.6568
          },
          {
            "average": 0.49207902,
            "count": 273956,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999381666,
            "variance": 0.2499381704
          },
          {
            "average": 0,
            "count": 273956,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 273956,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 273956,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04200309539,
            "count": 273956,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2005965659,
            "variance": 0.04023898225
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98862.54934,
          2372072.792,
          0.8694889883,
          -98551.24934,
          2372308.032,
          1.429488988
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98862.54933610625,
                2372072.79173385,
                0.869488988299233
              ],
              [
                -98862.54933610625,
                2372308.03173385,
                0.869488988299233
              ],
              [
                -98551.24933610627,
                2372308.03173385,
                1.429488988299233
              ],
              [
                -98551.24933610627,
                2372072.79173385,
                1.429488988299233
              ],
              [
                -98862.54933610625,
                2372072.79173385,
                0.869488988299233
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:52:03+00:00",
        "end_time": "2018-09-08T03:33:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2311.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2311.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2311.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2311.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6984782,
            71.32905622,
            0.8694889883,
            -156.6897306,
            71.33133218,
            1.429488988
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69821749886088,
                  71.32905622320044,
                  0.869488988299233
                ],
                [
                  -156.69847823177605,
                  71.33121615689214,
                  0.869488988299233
                ],
                [
                  -156.6899905251707,
                  71.33133218044831,
                  1.429488988299233
                ],
                [
                  -156.68973061055908,
                  71.32917223384857,
                  1.429488988299233
                ],
                [
                  -156.69821749886088,
                  71.32905622320044,
                  0.869488988299233
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2311.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2311.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:52:03Z",
            "pc:count": 273956,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98661.59872,
                "count": 273956,
                "maximum": -98551.24934,
                "minimum": -98862.54934,
                "name": "X",
                "position": 0,
                "stddev": 73.03269217,
                "variance": 5333.774126
              },
              {
                "average": 2372157.577,
                "count": 273956,
                "maximum": 2372308.032,
                "minimum": 2372072.792,
                "name": "Y",
                "position": 1,
                "stddev": 54.11164096,
                "variance": 2928.069688
              },
              {
                "average": 1.146595129,
                "count": 273956,
                "maximum": 1.429488988,
                "minimum": 0.8694889883,
                "name": "Z",
                "position": 2,
                "stddev": 0.06410188016,
                "variance": 0.00410905104
              },
              {
                "average": 13598.2132,
                "count": 273956,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9770.205714,
                "variance": 95456919.7
              },
              {
                "average": 1,
                "count": 273956,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 273956,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.493185037,
                "count": 273956,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999544666,
                "variance": 0.2499544687
              },
              {
                "average": 0.0006132371622,
                "count": 273956,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02475607682,
                "variance": 0.0006128633394
              },
              {
                "average": 7.593248551,
                "count": 273956,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.496560663,
                "variance": 6.232815143
              },
              {
                "average": 3.030928682,
                "count": 273956,
                "maximum": 13.41600037,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.355940578,
                "variance": 54.10986179
              },
              {
                "average": 0.49207902,
                "count": 273956,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999381666,
                "variance": 0.2499381704
              },
              {
                "average": 403.2360598,
                "count": 273956,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6499270611,
                "variance": 0.4224051848
              },
              {
                "average": 220413496.7,
                "count": 273956,
                "maximum": 220413923.4,
                "minimum": 220412825.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 357.1535479,
                "variance": 127558.6568
              },
              {
                "average": 0.49207902,
                "count": 273956,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999381666,
                "variance": 0.2499381704
              },
              {
                "average": 0,
                "count": 273956,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 273956,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 273956,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04200309539,
                "count": 273956,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2005965659,
                "variance": 0.04023898225
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98862.54934,
              2372072.792,
              0.8694889883,
              -98551.24934,
              2372308.032,
              1.429488988
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98862.54933610625,
                    2372072.79173385,
                    0.869488988299233
                  ],
                  [
                    -98862.54933610625,
                    2372308.03173385,
                    0.869488988299233
                  ],
                  [
                    -98551.24933610627,
                    2372308.03173385,
                    1.429488988299233
                  ],
                  [
                    -98551.24933610627,
                    2372072.79173385,
                    1.429488988299233
                  ],
                  [
                    -98862.54933610625,
                    2372072.79173385,
                    0.869488988299233
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:52:03+00:00",
            "end_time": "2018-09-08T03:33:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2250.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75337959300623,
              71.31297221710369,
              0.858253555966932
            ],
            [
              -156.75383269977416,
              71.31665252043555,
              0.858253555966932
            ],
            [
              -156.74211878095718,
              71.31681593265894,
              1.518253555966932
            ],
            [
              -156.7416675971682,
              71.31313559837848,
              1.518253555966932
            ],
            [
              -156.75337959300623,
              71.31297221710369,
              0.858253555966932
            ]
          ]
        ]
      },
      "bbox": [
        -156.7538327,
        71.31297222,
        0.858253556,
        -156.7416676,
        71.31681593,
        1.518253556
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:54Z",
        "pc:count": 707971,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100684.8382,
            "count": 707971,
            "maximum": -100525.1686,
            "minimum": -100955.0886,
            "name": "X",
            "position": 0,
            "stddev": 99.88481514,
            "variance": 9976.976296
          },
          {
            "average": 2370543.736,
            "count": 707971,
            "maximum": 2370807.748,
            "minimum": 2370406.868,
            "name": "Y",
            "position": 1,
            "stddev": 90.17820763,
            "variance": 8132.109131
          },
          {
            "average": 1.152907108,
            "count": 707971,
            "maximum": 1.518253556,
            "minimum": 0.858253556,
            "name": "Z",
            "position": 2,
            "stddev": 0.06491117033,
            "variance": 0.004213460034
          },
          {
            "average": 13125.21629,
            "count": 707971,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10148.31999,
            "variance": 102988398.5
          },
          {
            "average": 1,
            "count": 707971,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 707971,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4945428556,
            "count": 707971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999705718,
            "variance": 0.2499705727
          },
          {
            "average": 0.0005113203789,
            "count": 707971,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0226066285,
            "variance": 0.0005110596523
          },
          {
            "average": 7.398618022,
            "count": 707971,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.731210539,
            "variance": 7.459511007
          },
          {
            "average": 2.119403337,
            "count": 707971,
            "maximum": 14.77200031,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.902981899,
            "variance": 62.4571229
          },
          {
            "average": 0.4877106548,
            "count": 707971,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998493022,
            "variance": 0.2498493249
          },
          {
            "average": 403.167699,
            "count": 707971,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6837167838,
            "variance": 0.4674686404
          },
          {
            "average": 220413460.7,
            "count": 707971,
            "maximum": 220414514.9,
            "minimum": 220412780.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 366.155616,
            "variance": 134069.9351
          },
          {
            "average": 0.4877106548,
            "count": 707971,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998493022,
            "variance": 0.2498493249
          },
          {
            "average": 0,
            "count": 707971,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 707971,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 707971,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04077003154,
            "count": 707971,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1977571524,
            "variance": 0.03910789131
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100955.0886,
          2370406.868,
          0.858253556,
          -100525.1686,
          2370807.748,
          1.518253556
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100955.08856738308,
                2370406.8677630206,
                0.858253555966932
              ],
              [
                -100955.08856738308,
                2370807.7477630205,
                0.858253555966932
              ],
              [
                -100525.16856738307,
                2370807.7477630205,
                1.518253555966932
              ],
              [
                -100525.16856738307,
                2370406.8677630206,
                1.518253555966932
              ],
              [
                -100955.08856738308,
                2370406.8677630206,
                0.858253555966932
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:54+00:00",
        "end_time": "2018-09-08T03:33:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2250.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2250.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2250.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2250.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7538327,
            71.31297222,
            0.858253556,
            -156.7416676,
            71.31681593,
            1.518253556
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75337959300623,
                  71.31297221710369,
                  0.858253555966932
                ],
                [
                  -156.75383269977416,
                  71.31665252043555,
                  0.858253555966932
                ],
                [
                  -156.74211878095718,
                  71.31681593265894,
                  1.518253555966932
                ],
                [
                  -156.7416675971682,
                  71.31313559837848,
                  1.518253555966932
                ],
                [
                  -156.75337959300623,
                  71.31297221710369,
                  0.858253555966932
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2250.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2250.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:54Z",
            "pc:count": 707971,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100684.8382,
                "count": 707971,
                "maximum": -100525.1686,
                "minimum": -100955.0886,
                "name": "X",
                "position": 0,
                "stddev": 99.88481514,
                "variance": 9976.976296
              },
              {
                "average": 2370543.736,
                "count": 707971,
                "maximum": 2370807.748,
                "minimum": 2370406.868,
                "name": "Y",
                "position": 1,
                "stddev": 90.17820763,
                "variance": 8132.109131
              },
              {
                "average": 1.152907108,
                "count": 707971,
                "maximum": 1.518253556,
                "minimum": 0.858253556,
                "name": "Z",
                "position": 2,
                "stddev": 0.06491117033,
                "variance": 0.004213460034
              },
              {
                "average": 13125.21629,
                "count": 707971,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10148.31999,
                "variance": 102988398.5
              },
              {
                "average": 1,
                "count": 707971,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 707971,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4945428556,
                "count": 707971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999705718,
                "variance": 0.2499705727
              },
              {
                "average": 0.0005113203789,
                "count": 707971,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0226066285,
                "variance": 0.0005110596523
              },
              {
                "average": 7.398618022,
                "count": 707971,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.731210539,
                "variance": 7.459511007
              },
              {
                "average": 2.119403337,
                "count": 707971,
                "maximum": 14.77200031,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.902981899,
                "variance": 62.4571229
              },
              {
                "average": 0.4877106548,
                "count": 707971,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998493022,
                "variance": 0.2498493249
              },
              {
                "average": 403.167699,
                "count": 707971,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6837167838,
                "variance": 0.4674686404
              },
              {
                "average": 220413460.7,
                "count": 707971,
                "maximum": 220414514.9,
                "minimum": 220412780.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 366.155616,
                "variance": 134069.9351
              },
              {
                "average": 0.4877106548,
                "count": 707971,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998493022,
                "variance": 0.2498493249
              },
              {
                "average": 0,
                "count": 707971,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 707971,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 707971,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04077003154,
                "count": 707971,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1977571524,
                "variance": 0.03910789131
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100955.0886,
              2370406.868,
              0.858253556,
              -100525.1686,
              2370807.748,
              1.518253556
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100955.08856738308,
                    2370406.8677630206,
                    0.858253555966932
                  ],
                  [
                    -100955.08856738308,
                    2370807.7477630205,
                    0.858253555966932
                  ],
                  [
                    -100525.16856738307,
                    2370807.7477630205,
                    1.518253555966932
                  ],
                  [
                    -100525.16856738307,
                    2370406.8677630206,
                    1.518253555966932
                  ],
                  [
                    -100955.08856738308,
                    2370406.8677630206,
                    0.858253555966932
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:54+00:00",
            "end_time": "2018-09-08T03:33:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2216.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73007989688324,
              71.30458310043448,
              2.056534412086631
            ],
            [
              -156.7306104872705,
              71.30893083982708,
              2.056534412086631
            ],
            [
              -156.71710709354647,
              71.3091176151702,
              39.77653441208663
            ],
            [
              -156.71657912115901,
              71.30476983400929,
              39.77653441208663
            ],
            [
              -156.73007989688324,
              71.30458310043448,
              2.056534412086631
            ]
          ]
        ]
      },
      "bbox": [
        -156.7306105,
        71.3045831,
        2.056534412,
        -156.7165791,
        71.30911762,
        39.77653441
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:55Z",
        "pc:count": 1543944,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99877.07383,
            "count": 1543944,
            "maximum": -99643.03159,
            "minimum": -100138.7916,
            "name": "X",
            "position": 0,
            "stddev": 138.4597151,
            "variance": 19171.09271
          },
          {
            "average": 2369688.222,
            "count": 1543944,
            "maximum": 2369932.927,
            "minimum": 2369459.327,
            "name": "Y",
            "position": 1,
            "stddev": 141.6906622,
            "variance": 20076.24375
          },
          {
            "average": 2.883759175,
            "count": 1543944,
            "maximum": 39.77653441,
            "minimum": 2.056534412,
            "name": "Z",
            "position": 2,
            "stddev": 1.278116715,
            "variance": 1.633582338
          },
          {
            "average": 24773.76574,
            "count": 1543944,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16794.97087,
            "variance": 282071046.6
          },
          {
            "average": 1.002145156,
            "count": 1543944,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04756386624,
            "variance": 0.002262321371
          },
          {
            "average": 1.004276062,
            "count": 1543944,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06792650916,
            "variance": 0.004614010647
          },
          {
            "average": 0.5022280601,
            "count": 1543944,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951976,
            "variance": 0.2499951977
          },
          {
            "average": 0.0007577995057,
            "count": 1543944,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02751773494,
            "variance": 0.000757225736
          },
          {
            "average": 6.320589348,
            "count": 1543944,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.526659402,
            "variance": 12.43732654
          },
          {
            "average": 0.1668965701,
            "count": 1543944,
            "maximum": 16.3560009,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.967372438,
            "variance": 63.47902357
          },
          {
            "average": 0.4995828864,
            "count": 1543944,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999879,
            "variance": 0.2499999879
          },
          {
            "average": 406.2411376,
            "count": 1543944,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8118744332,
            "variance": 0.6591400953
          },
          {
            "average": 220415169.8,
            "count": 1543944,
            "maximum": 220416135.7,
            "minimum": 220414506.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 457.5686642,
            "variance": 209369.0825
          },
          {
            "average": 0.4995828864,
            "count": 1543944,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999879,
            "variance": 0.2499999879
          },
          {
            "average": 0,
            "count": 1543944,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1543944,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1543944,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09098905142,
            "count": 1543944,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2875936326,
            "variance": 0.08271009751
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100138.7916,
          2369459.327,
          2.056534412,
          -99643.03159,
          2369932.927,
          39.77653441
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100138.79158689783,
                2369459.3265441842,
                2.056534412086631
              ],
              [
                -100138.79158689783,
                2369932.926544184,
                2.056534412086631
              ],
              [
                -99643.03158689782,
                2369932.926544184,
                39.77653441208663
              ],
              [
                -99643.03158689782,
                2369459.3265441842,
                39.77653441208663
              ],
              [
                -100138.79158689783,
                2369459.3265441842,
                2.056534412086631
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:55+00:00",
        "end_time": "2018-09-08T04:01:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2216.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2216.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2216.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2216.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7306105,
            71.3045831,
            2.056534412,
            -156.7165791,
            71.30911762,
            39.77653441
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73007989688324,
                  71.30458310043448,
                  2.056534412086631
                ],
                [
                  -156.7306104872705,
                  71.30893083982708,
                  2.056534412086631
                ],
                [
                  -156.71710709354647,
                  71.3091176151702,
                  39.77653441208663
                ],
                [
                  -156.71657912115901,
                  71.30476983400929,
                  39.77653441208663
                ],
                [
                  -156.73007989688324,
                  71.30458310043448,
                  2.056534412086631
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2216.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2216.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:55Z",
            "pc:count": 1543944,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99877.07383,
                "count": 1543944,
                "maximum": -99643.03159,
                "minimum": -100138.7916,
                "name": "X",
                "position": 0,
                "stddev": 138.4597151,
                "variance": 19171.09271
              },
              {
                "average": 2369688.222,
                "count": 1543944,
                "maximum": 2369932.927,
                "minimum": 2369459.327,
                "name": "Y",
                "position": 1,
                "stddev": 141.6906622,
                "variance": 20076.24375
              },
              {
                "average": 2.883759175,
                "count": 1543944,
                "maximum": 39.77653441,
                "minimum": 2.056534412,
                "name": "Z",
                "position": 2,
                "stddev": 1.278116715,
                "variance": 1.633582338
              },
              {
                "average": 24773.76574,
                "count": 1543944,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16794.97087,
                "variance": 282071046.6
              },
              {
                "average": 1.002145156,
                "count": 1543944,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04756386624,
                "variance": 0.002262321371
              },
              {
                "average": 1.004276062,
                "count": 1543944,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06792650916,
                "variance": 0.004614010647
              },
              {
                "average": 0.5022280601,
                "count": 1543944,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951976,
                "variance": 0.2499951977
              },
              {
                "average": 0.0007577995057,
                "count": 1543944,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02751773494,
                "variance": 0.000757225736
              },
              {
                "average": 6.320589348,
                "count": 1543944,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.526659402,
                "variance": 12.43732654
              },
              {
                "average": 0.1668965701,
                "count": 1543944,
                "maximum": 16.3560009,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.967372438,
                "variance": 63.47902357
              },
              {
                "average": 0.4995828864,
                "count": 1543944,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999879,
                "variance": 0.2499999879
              },
              {
                "average": 406.2411376,
                "count": 1543944,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8118744332,
                "variance": 0.6591400953
              },
              {
                "average": 220415169.8,
                "count": 1543944,
                "maximum": 220416135.7,
                "minimum": 220414506.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 457.5686642,
                "variance": 209369.0825
              },
              {
                "average": 0.4995828864,
                "count": 1543944,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999879,
                "variance": 0.2499999879
              },
              {
                "average": 0,
                "count": 1543944,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1543944,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1543944,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09098905142,
                "count": 1543944,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2875936326,
                "variance": 0.08271009751
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100138.7916,
              2369459.327,
              2.056534412,
              -99643.03159,
              2369932.927,
              39.77653441
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100138.79158689783,
                    2369459.3265441842,
                    2.056534412086631
                  ],
                  [
                    -100138.79158689783,
                    2369932.926544184,
                    2.056534412086631
                  ],
                  [
                    -99643.03158689782,
                    2369932.926544184,
                    39.77653441208663
                  ],
                  [
                    -99643.03158689782,
                    2369459.3265441842,
                    39.77653441208663
                  ],
                  [
                    -100138.79158689783,
                    2369459.3265441842,
                    2.056534412086631
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:55+00:00",
            "end_time": "2018-09-08T04:01:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2338.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63837228776987,
              71.33673470182706,
              -14.647490262812141
            ],
            [
              -156.63888571513934,
              71.34108289871396,
              -14.647490262812141
            ],
            [
              -156.62535287264708,
              71.3412635500463,
              54.652509737187856
            ],
            [
              -156.62484207275583,
              71.3369153126812,
              54.652509737187856
            ],
            [
              -156.63837228776987,
              71.33673470182706,
              -14.647490262812141
            ]
          ]
        ]
      },
      "bbox": [
        -156.6388857,
        71.3367347,
        -14.64749026,
        -156.6248421,
        71.34126355,
        54.65250974
      ],
      "properties": {
        "datetime": "2018-09-08T04:19:22Z",
        "pc:count": 2579521,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96399.67563,
            "count": 2579521,
            "maximum": -96141.70428,
            "minimum": -96637.80428,
            "name": "X",
            "position": 0,
            "stddev": 134.5661523,
            "variance": 18108.04936
          },
          {
            "average": 2373081.069,
            "count": 2579521,
            "maximum": 2373293.115,
            "minimum": 2372819.595,
            "name": "Y",
            "position": 1,
            "stddev": 122.9330297,
            "variance": 15112.52978
          },
          {
            "average": 2.368406154,
            "count": 2579521,
            "maximum": 54.65250974,
            "minimum": -14.64749026,
            "name": "Z",
            "position": 2,
            "stddev": 1.204387414,
            "variance": 1.450549042
          },
          {
            "average": 18095.55183,
            "count": 2579521,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7500.377487,
            "variance": 56255662.45
          },
          {
            "average": 1.000005427,
            "count": 2579521,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002329664541,
            "variance": 5.427336875e-06
          },
          {
            "average": 1.000010855,
            "count": 2579521,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00329463425,
            "variance": 1.085461484e-05
          },
          {
            "average": 0.498852694,
            "count": 2579521,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987806,
            "variance": 0.2499987806
          },
          {
            "average": 0.0004295371117,
            "count": 2579521,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02072082952,
            "variance": 0.0004293527761
          },
          {
            "average": 3.623774724,
            "count": 2579521,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.494274514,
            "variance": 12.20995438
          },
          {
            "average": 1.196592707,
            "count": 2579521,
            "maximum": 16.33200073,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.668149262,
            "variance": 93.47311016
          },
          {
            "average": 0.5097353346,
            "count": 2579521,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999053112,
            "variance": 0.2499053201
          },
          {
            "average": 405.0965028,
            "count": 2579521,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8107097908,
            "variance": 0.657250365
          },
          {
            "average": 220414545.7,
            "count": 2579521,
            "maximum": 220415562.1,
            "minimum": 220413319.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 464.1777755,
            "variance": 215461.0073
          },
          {
            "average": 0.5097353346,
            "count": 2579521,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999053112,
            "variance": 0.2499053201
          },
          {
            "average": 0,
            "count": 2579521,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2579521,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2579521,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1415355797,
            "count": 2579521,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.348573244,
            "variance": 0.1215033065
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96637.80428,
          2372819.595,
          -14.64749026,
          -96141.70428,
          2373293.115,
          54.65250974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96637.80427782798,
                2372819.594533519,
                -14.647490262812141
              ],
              [
                -96637.80427782798,
                2373293.1145335184,
                -14.647490262812141
              ],
              [
                -96141.70427782797,
                2373293.1145335184,
                54.652509737187856
              ],
              [
                -96141.70427782797,
                2372819.594533519,
                54.652509737187856
              ],
              [
                -96637.80427782798,
                2372819.594533519,
                -14.647490262812141
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:19:22+00:00",
        "end_time": "2018-09-08T03:41:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2338.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2338.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2338.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2338.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6388857,
            71.3367347,
            -14.64749026,
            -156.6248421,
            71.34126355,
            54.65250974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63837228776987,
                  71.33673470182706,
                  -14.647490262812141
                ],
                [
                  -156.63888571513934,
                  71.34108289871396,
                  -14.647490262812141
                ],
                [
                  -156.62535287264708,
                  71.3412635500463,
                  54.652509737187856
                ],
                [
                  -156.62484207275583,
                  71.3369153126812,
                  54.652509737187856
                ],
                [
                  -156.63837228776987,
                  71.33673470182706,
                  -14.647490262812141
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2338.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2338.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:19:22Z",
            "pc:count": 2579521,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96399.67563,
                "count": 2579521,
                "maximum": -96141.70428,
                "minimum": -96637.80428,
                "name": "X",
                "position": 0,
                "stddev": 134.5661523,
                "variance": 18108.04936
              },
              {
                "average": 2373081.069,
                "count": 2579521,
                "maximum": 2373293.115,
                "minimum": 2372819.595,
                "name": "Y",
                "position": 1,
                "stddev": 122.9330297,
                "variance": 15112.52978
              },
              {
                "average": 2.368406154,
                "count": 2579521,
                "maximum": 54.65250974,
                "minimum": -14.64749026,
                "name": "Z",
                "position": 2,
                "stddev": 1.204387414,
                "variance": 1.450549042
              },
              {
                "average": 18095.55183,
                "count": 2579521,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7500.377487,
                "variance": 56255662.45
              },
              {
                "average": 1.000005427,
                "count": 2579521,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002329664541,
                "variance": 5.427336875e-06
              },
              {
                "average": 1.000010855,
                "count": 2579521,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00329463425,
                "variance": 1.085461484e-05
              },
              {
                "average": 0.498852694,
                "count": 2579521,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987806,
                "variance": 0.2499987806
              },
              {
                "average": 0.0004295371117,
                "count": 2579521,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02072082952,
                "variance": 0.0004293527761
              },
              {
                "average": 3.623774724,
                "count": 2579521,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.494274514,
                "variance": 12.20995438
              },
              {
                "average": 1.196592707,
                "count": 2579521,
                "maximum": 16.33200073,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.668149262,
                "variance": 93.47311016
              },
              {
                "average": 0.5097353346,
                "count": 2579521,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999053112,
                "variance": 0.2499053201
              },
              {
                "average": 405.0965028,
                "count": 2579521,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8107097908,
                "variance": 0.657250365
              },
              {
                "average": 220414545.7,
                "count": 2579521,
                "maximum": 220415562.1,
                "minimum": 220413319.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 464.1777755,
                "variance": 215461.0073
              },
              {
                "average": 0.5097353346,
                "count": 2579521,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999053112,
                "variance": 0.2499053201
              },
              {
                "average": 0,
                "count": 2579521,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2579521,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2579521,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1415355797,
                "count": 2579521,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.348573244,
                "variance": 0.1215033065
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96637.80428,
              2372819.595,
              -14.64749026,
              -96141.70428,
              2373293.115,
              54.65250974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96637.80427782798,
                    2372819.594533519,
                    -14.647490262812141
                  ],
                  [
                    -96637.80427782798,
                    2373293.1145335184,
                    -14.647490262812141
                  ],
                  [
                    -96141.70427782797,
                    2373293.1145335184,
                    54.652509737187856
                  ],
                  [
                    -96141.70427782797,
                    2372819.594533519,
                    54.652509737187856
                  ],
                  [
                    -96637.80427782798,
                    2372819.594533519,
                    -14.647490262812141
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:19:22+00:00",
            "end_time": "2018-09-08T03:41:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2192.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.78142983853618,
              71.3008241132564,
              0.870606155394328
            ],
            [
              -156.78196332671868,
              71.3051154221075,
              0.870606155394328
            ],
            [
              -156.76846321043885,
              71.3053057042133,
              1.490606155394328
            ],
            [
              -156.76793230511606,
              71.3010143533711,
              1.490606155394328
            ],
            [
              -156.78142983853618,
              71.3008241132564,
              0.870606155394328
            ]
          ]
        ]
      },
      "bbox": [
        -156.7819633,
        71.30082411,
        0.8706061554,
        -156.7679323,
        71.3053057,
        1.490606155
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:40Z",
        "pc:count": 1675967,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101783.0513,
            "count": 1675967,
            "maximum": -101542.5963,
            "minimum": -102038.3363,
            "name": "X",
            "position": 0,
            "stddev": 135.9504043,
            "variance": 18482.51242
          },
          {
            "average": 2369367.307,
            "count": 1675967,
            "maximum": 2369596.189,
            "minimum": 2369128.709,
            "name": "Y",
            "position": 1,
            "stddev": 129.0255145,
            "variance": 16647.5834
          },
          {
            "average": 1.155450618,
            "count": 1675967,
            "maximum": 1.490606155,
            "minimum": 0.8706061554,
            "name": "Z",
            "position": 2,
            "stddev": 0.06291032843,
            "variance": 0.003957709423
          },
          {
            "average": 13923.15383,
            "count": 1675967,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10187.00507,
            "variance": 103775072.3
          },
          {
            "average": 1,
            "count": 1675967,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1675967,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4952275313,
            "count": 1675967,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999773722,
            "variance": 0.2499773727
          },
          {
            "average": 0.000641420744,
            "count": 1675967,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02531816948,
            "variance": 0.0006410097059
          },
          {
            "average": 7.651490155,
            "count": 1675967,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.476868418,
            "variance": 6.134877161
          },
          {
            "average": 2.455978657,
            "count": 1675967,
            "maximum": 16.40399933,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.460554407,
            "variance": 55.65987206
          },
          {
            "average": 0.4856229269,
            "count": 1675967,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997934061,
            "variance": 0.2497934488
          },
          {
            "average": 403.735095,
            "count": 1675967,
            "maximum": 406,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7177202711,
            "variance": 0.5151223876
          },
          {
            "average": 220413777.6,
            "count": 1675967,
            "maximum": 220414980.8,
            "minimum": 220412754.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 383.5259596,
            "variance": 147092.1617
          },
          {
            "average": 0.4856229269,
            "count": 1675967,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997934061,
            "variance": 0.2497934488
          },
          {
            "average": 0,
            "count": 1675967,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1675967,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1675967,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05385308899,
            "count": 1675967,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2257276328,
            "variance": 0.0509529642
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102038.3363,
          2369128.709,
          0.8706061554,
          -101542.5963,
          2369596.189,
          1.490606155
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102038.3363499603,
                2369128.7094365247,
                0.870606155394328
              ],
              [
                -102038.3363499603,
                2369596.189436525,
                0.870606155394328
              ],
              [
                -101542.59634996031,
                2369596.189436525,
                1.490606155394328
              ],
              [
                -101542.59634996031,
                2369128.7094365247,
                1.490606155394328
              ],
              [
                -102038.3363499603,
                2369128.7094365247,
                0.870606155394328
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:40+00:00",
        "end_time": "2018-09-08T03:32:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2192.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2192.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2192.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2192.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7819633,
            71.30082411,
            0.8706061554,
            -156.7679323,
            71.3053057,
            1.490606155
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.78142983853618,
                  71.3008241132564,
                  0.870606155394328
                ],
                [
                  -156.78196332671868,
                  71.3051154221075,
                  0.870606155394328
                ],
                [
                  -156.76846321043885,
                  71.3053057042133,
                  1.490606155394328
                ],
                [
                  -156.76793230511606,
                  71.3010143533711,
                  1.490606155394328
                ],
                [
                  -156.78142983853618,
                  71.3008241132564,
                  0.870606155394328
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2192.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2192.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:40Z",
            "pc:count": 1675967,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101783.0513,
                "count": 1675967,
                "maximum": -101542.5963,
                "minimum": -102038.3363,
                "name": "X",
                "position": 0,
                "stddev": 135.9504043,
                "variance": 18482.51242
              },
              {
                "average": 2369367.307,
                "count": 1675967,
                "maximum": 2369596.189,
                "minimum": 2369128.709,
                "name": "Y",
                "position": 1,
                "stddev": 129.0255145,
                "variance": 16647.5834
              },
              {
                "average": 1.155450618,
                "count": 1675967,
                "maximum": 1.490606155,
                "minimum": 0.8706061554,
                "name": "Z",
                "position": 2,
                "stddev": 0.06291032843,
                "variance": 0.003957709423
              },
              {
                "average": 13923.15383,
                "count": 1675967,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10187.00507,
                "variance": 103775072.3
              },
              {
                "average": 1,
                "count": 1675967,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1675967,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4952275313,
                "count": 1675967,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999773722,
                "variance": 0.2499773727
              },
              {
                "average": 0.000641420744,
                "count": 1675967,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02531816948,
                "variance": 0.0006410097059
              },
              {
                "average": 7.651490155,
                "count": 1675967,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.476868418,
                "variance": 6.134877161
              },
              {
                "average": 2.455978657,
                "count": 1675967,
                "maximum": 16.40399933,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.460554407,
                "variance": 55.65987206
              },
              {
                "average": 0.4856229269,
                "count": 1675967,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997934061,
                "variance": 0.2497934488
              },
              {
                "average": 403.735095,
                "count": 1675967,
                "maximum": 406,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7177202711,
                "variance": 0.5151223876
              },
              {
                "average": 220413777.6,
                "count": 1675967,
                "maximum": 220414980.8,
                "minimum": 220412754.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 383.5259596,
                "variance": 147092.1617
              },
              {
                "average": 0.4856229269,
                "count": 1675967,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997934061,
                "variance": 0.2497934488
              },
              {
                "average": 0,
                "count": 1675967,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1675967,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1675967,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05385308899,
                "count": 1675967,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2257276328,
                "variance": 0.0509529642
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102038.3363,
              2369128.709,
              0.8706061554,
              -101542.5963,
              2369596.189,
              1.490606155
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102038.3363499603,
                    2369128.7094365247,
                    0.870606155394328
                  ],
                  [
                    -102038.3363499603,
                    2369596.189436525,
                    0.870606155394328
                  ],
                  [
                    -101542.59634996031,
                    2369596.189436525,
                    1.490606155394328
                  ],
                  [
                    -101542.59634996031,
                    2369128.7094365247,
                    1.490606155394328
                  ],
                  [
                    -102038.3363499603,
                    2369128.7094365247,
                    0.870606155394328
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:40+00:00",
            "end_time": "2018-09-08T03:32:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2270.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69093275604854,
              71.31661192866851,
              1.395919639397286
            ],
            [
              -156.69145602359265,
              71.32096012718023,
              1.395919639397286
            ],
            [
              -156.67794177515594,
              71.32114427837404,
              2.495919639397286
            ],
            [
              -156.67742112931373,
              71.3167960386479,
              2.495919639397286
            ],
            [
              -156.69093275604854,
              71.31661192866851,
              1.395919639397286
            ]
          ]
        ]
      },
      "bbox": [
        -156.691456,
        71.31661193,
        1.395919639,
        -156.6774211,
        71.32114428,
        2.495919639
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:27Z",
        "pc:count": 1554703,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98402.42257,
            "count": 1554703,
            "maximum": -98154.76199,
            "minimum": -98650.64199,
            "name": "X",
            "position": 0,
            "stddev": 135.2713942,
            "variance": 18298.35009
          },
          {
            "average": 2370944.598,
            "count": 1554703,
            "maximum": 2371182.407,
            "minimum": 2370708.807,
            "name": "Y",
            "position": 1,
            "stddev": 128.3121107,
            "variance": 16463.99774
          },
          {
            "average": 1.590141713,
            "count": 1554703,
            "maximum": 2.495919639,
            "minimum": 1.395919639,
            "name": "Z",
            "position": 2,
            "stddev": 0.03604220846,
            "variance": 0.001299040791
          },
          {
            "average": 16728.38243,
            "count": 1554703,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12813.62617,
            "variance": 164189015.6
          },
          {
            "average": 1,
            "count": 1554703,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1554703,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5035051711,
            "count": 1554703,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999878744,
            "variance": 0.2499878746
          },
          {
            "average": 0.0007416207469,
            "count": 1554703,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02722262335,
            "variance": 0.0007410712222
          },
          {
            "average": 8.275462259,
            "count": 1554703,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.769681289,
            "variance": 3.131771865
          },
          {
            "average": -0.6871868516,
            "count": 1554703,
            "maximum": 16.36800003,
            "minimum": -15.72000027,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.982603324,
            "variance": 48.75674918
          },
          {
            "average": 0.4872615541,
            "count": 1554703,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998378664,
            "variance": 0.2498378927
          },
          {
            "average": 406.108357,
            "count": 1554703,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6765075974,
            "variance": 0.4576625293
          },
          {
            "average": 220415103.1,
            "count": 1554703,
            "maximum": 220416167.6,
            "minimum": 220413908.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 382.5826092,
            "variance": 146369.4528
          },
          {
            "average": 0.4872615541,
            "count": 1554703,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998378664,
            "variance": 0.2498378927
          },
          {
            "average": 0,
            "count": 1554703,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1554703,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1554703,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04343015997,
            "count": 1554703,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2038234724,
            "variance": 0.0415440079
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98650.64199,
          2370708.807,
          1.395919639,
          -98154.76199,
          2371182.407,
          2.495919639
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98650.64199081295,
                2370708.8074800596,
                1.395919639397286
              ],
              [
                -98650.64199081295,
                2371182.407480059,
                1.395919639397286
              ],
              [
                -98154.76199081294,
                2371182.407480059,
                2.495919639397286
              ],
              [
                -98154.76199081294,
                2370708.8074800596,
                2.495919639397286
              ],
              [
                -98650.64199081295,
                2370708.8074800596,
                1.395919639397286
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:27+00:00",
        "end_time": "2018-09-08T03:51:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2270.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2270.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2270.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2270.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.691456,
            71.31661193,
            1.395919639,
            -156.6774211,
            71.32114428,
            2.495919639
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69093275604854,
                  71.31661192866851,
                  1.395919639397286
                ],
                [
                  -156.69145602359265,
                  71.32096012718023,
                  1.395919639397286
                ],
                [
                  -156.67794177515594,
                  71.32114427837404,
                  2.495919639397286
                ],
                [
                  -156.67742112931373,
                  71.3167960386479,
                  2.495919639397286
                ],
                [
                  -156.69093275604854,
                  71.31661192866851,
                  1.395919639397286
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2270.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2270.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:27Z",
            "pc:count": 1554703,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98402.42257,
                "count": 1554703,
                "maximum": -98154.76199,
                "minimum": -98650.64199,
                "name": "X",
                "position": 0,
                "stddev": 135.2713942,
                "variance": 18298.35009
              },
              {
                "average": 2370944.598,
                "count": 1554703,
                "maximum": 2371182.407,
                "minimum": 2370708.807,
                "name": "Y",
                "position": 1,
                "stddev": 128.3121107,
                "variance": 16463.99774
              },
              {
                "average": 1.590141713,
                "count": 1554703,
                "maximum": 2.495919639,
                "minimum": 1.395919639,
                "name": "Z",
                "position": 2,
                "stddev": 0.03604220846,
                "variance": 0.001299040791
              },
              {
                "average": 16728.38243,
                "count": 1554703,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12813.62617,
                "variance": 164189015.6
              },
              {
                "average": 1,
                "count": 1554703,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1554703,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5035051711,
                "count": 1554703,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999878744,
                "variance": 0.2499878746
              },
              {
                "average": 0.0007416207469,
                "count": 1554703,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02722262335,
                "variance": 0.0007410712222
              },
              {
                "average": 8.275462259,
                "count": 1554703,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.769681289,
                "variance": 3.131771865
              },
              {
                "average": -0.6871868516,
                "count": 1554703,
                "maximum": 16.36800003,
                "minimum": -15.72000027,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.982603324,
                "variance": 48.75674918
              },
              {
                "average": 0.4872615541,
                "count": 1554703,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998378664,
                "variance": 0.2498378927
              },
              {
                "average": 406.108357,
                "count": 1554703,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6765075974,
                "variance": 0.4576625293
              },
              {
                "average": 220415103.1,
                "count": 1554703,
                "maximum": 220416167.6,
                "minimum": 220413908.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 382.5826092,
                "variance": 146369.4528
              },
              {
                "average": 0.4872615541,
                "count": 1554703,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998378664,
                "variance": 0.2498378927
              },
              {
                "average": 0,
                "count": 1554703,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1554703,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1554703,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04343015997,
                "count": 1554703,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2038234724,
                "variance": 0.0415440079
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98650.64199,
              2370708.807,
              1.395919639,
              -98154.76199,
              2371182.407,
              2.495919639
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98650.64199081295,
                    2370708.8074800596,
                    1.395919639397286
                  ],
                  [
                    -98650.64199081295,
                    2371182.407480059,
                    1.395919639397286
                  ],
                  [
                    -98154.76199081294,
                    2371182.407480059,
                    2.495919639397286
                  ],
                  [
                    -98154.76199081294,
                    2370708.8074800596,
                    2.495919639397286
                  ],
                  [
                    -98650.64199081295,
                    2370708.8074800596,
                    1.395919639397286
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:27+00:00",
            "end_time": "2018-09-08T03:51:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2360.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56102783423523,
              71.3445573383866,
              0.803549216359039
            ],
            [
              -156.5615035828555,
              71.34870704552547,
              0.803549216359039
            ],
            [
              -156.54796496330206,
              71.34888240450047,
              1.403549216359039
            ],
            [
              -156.54749172426372,
              71.34473265984593,
              1.403549216359039
            ],
            [
              -156.56102783423523,
              71.3445573383866,
              0.803549216359039
            ]
          ]
        ]
      },
      "bbox": [
        -156.5615036,
        71.34455734,
        0.8035492164,
        -156.5474917,
        71.3488824,
        1.403549216
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:00Z",
        "pc:count": 1277006,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93555.61684,
            "count": 1277006,
            "maximum": -93277.33473,
            "minimum": -93773.45473,
            "name": "X",
            "position": 0,
            "stddev": 133.3407996,
            "variance": 17779.76884
          },
          {
            "average": 2373815.835,
            "count": 1277006,
            "maximum": 2374011.128,
            "minimum": 2373559.268,
            "name": "Y",
            "position": 1,
            "stddev": 114.4490259,
            "variance": 13098.57953
          },
          {
            "average": 1.098437565,
            "count": 1277006,
            "maximum": 1.403549216,
            "minimum": 0.8035492164,
            "name": "Z",
            "position": 2,
            "stddev": 0.05947490896,
            "variance": 0.003537264796
          },
          {
            "average": 16182.60122,
            "count": 1277006,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12199.60934,
            "variance": 148830468
          },
          {
            "average": 1,
            "count": 1277006,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1277006,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5083633123,
            "count": 1277006,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999302459,
            "variance": 0.2499302507
          },
          {
            "average": 0.0006773656506,
            "count": 1277006,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02601744331,
            "variance": 0.0006769073564
          },
          {
            "average": 7.721879145,
            "count": 1277006,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.428103301,
            "variance": 5.89568564
          },
          {
            "average": -2.297516074,
            "count": 1277006,
            "maximum": 16.36800003,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.961675532,
            "variance": 48.46492621
          },
          {
            "average": 0.4818364205,
            "count": 1277006,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996701711,
            "variance": 0.2496702799
          },
          {
            "average": 408.2242754,
            "count": 1277006,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6629435976,
            "variance": 0.4394942136
          },
          {
            "average": 220416311,
            "count": 1277006,
            "maximum": 220417400.5,
            "minimum": 220415507.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 363.2963353,
            "variance": 131984.2272
          },
          {
            "average": 0.4818364205,
            "count": 1277006,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996701711,
            "variance": 0.2496702799
          },
          {
            "average": 0,
            "count": 1277006,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1277006,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1277006,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06497698523,
            "count": 1277006,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2464853428,
            "variance": 0.0607550242
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93773.45473,
          2373559.268,
          0.8035492164,
          -93277.33473,
          2374011.128,
          1.403549216
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93773.45472973058,
                2373559.26820139,
                0.803549216359039
              ],
              [
                -93773.45472973058,
                2374011.12820139,
                0.803549216359039
              ],
              [
                -93277.33472973059,
                2374011.12820139,
                1.403549216359039
              ],
              [
                -93277.33472973059,
                2373559.26820139,
                1.403549216359039
              ],
              [
                -93773.45472973058,
                2373559.26820139,
                0.803549216359039
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:00+00:00",
        "end_time": "2018-09-08T04:18:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2360.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2360.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2360.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2360.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5615036,
            71.34455734,
            0.8035492164,
            -156.5474917,
            71.3488824,
            1.403549216
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56102783423523,
                  71.3445573383866,
                  0.803549216359039
                ],
                [
                  -156.5615035828555,
                  71.34870704552547,
                  0.803549216359039
                ],
                [
                  -156.54796496330206,
                  71.34888240450047,
                  1.403549216359039
                ],
                [
                  -156.54749172426372,
                  71.34473265984593,
                  1.403549216359039
                ],
                [
                  -156.56102783423523,
                  71.3445573383866,
                  0.803549216359039
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2360.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2360.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:00Z",
            "pc:count": 1277006,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93555.61684,
                "count": 1277006,
                "maximum": -93277.33473,
                "minimum": -93773.45473,
                "name": "X",
                "position": 0,
                "stddev": 133.3407996,
                "variance": 17779.76884
              },
              {
                "average": 2373815.835,
                "count": 1277006,
                "maximum": 2374011.128,
                "minimum": 2373559.268,
                "name": "Y",
                "position": 1,
                "stddev": 114.4490259,
                "variance": 13098.57953
              },
              {
                "average": 1.098437565,
                "count": 1277006,
                "maximum": 1.403549216,
                "minimum": 0.8035492164,
                "name": "Z",
                "position": 2,
                "stddev": 0.05947490896,
                "variance": 0.003537264796
              },
              {
                "average": 16182.60122,
                "count": 1277006,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12199.60934,
                "variance": 148830468
              },
              {
                "average": 1,
                "count": 1277006,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1277006,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5083633123,
                "count": 1277006,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999302459,
                "variance": 0.2499302507
              },
              {
                "average": 0.0006773656506,
                "count": 1277006,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02601744331,
                "variance": 0.0006769073564
              },
              {
                "average": 7.721879145,
                "count": 1277006,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.428103301,
                "variance": 5.89568564
              },
              {
                "average": -2.297516074,
                "count": 1277006,
                "maximum": 16.36800003,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.961675532,
                "variance": 48.46492621
              },
              {
                "average": 0.4818364205,
                "count": 1277006,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996701711,
                "variance": 0.2496702799
              },
              {
                "average": 408.2242754,
                "count": 1277006,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6629435976,
                "variance": 0.4394942136
              },
              {
                "average": 220416311,
                "count": 1277006,
                "maximum": 220417400.5,
                "minimum": 220415507.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 363.2963353,
                "variance": 131984.2272
              },
              {
                "average": 0.4818364205,
                "count": 1277006,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996701711,
                "variance": 0.2496702799
              },
              {
                "average": 0,
                "count": 1277006,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1277006,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1277006,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06497698523,
                "count": 1277006,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2464853428,
                "variance": 0.0607550242
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93773.45473,
              2373559.268,
              0.8035492164,
              -93277.33473,
              2374011.128,
              1.403549216
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93773.45472973058,
                    2373559.26820139,
                    0.803549216359039
                  ],
                  [
                    -93773.45472973058,
                    2374011.12820139,
                    0.803549216359039
                  ],
                  [
                    -93277.33472973059,
                    2374011.12820139,
                    1.403549216359039
                  ],
                  [
                    -93277.33472973059,
                    2373559.26820139,
                    1.403549216359039
                  ],
                  [
                    -93773.45472973058,
                    2373559.26820139,
                    0.803549216359039
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:00+00:00",
            "end_time": "2018-09-08T04:18:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2251.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74232212333845,
              71.31286357763223,
              0.863788557966418
            ],
            [
              -156.74285222619483,
              71.31718655617314,
              0.863788557966418
            ],
            [
              -156.729340682722,
              71.31737422609362,
              1.763788557966418
            ],
            [
              -156.72881318530494,
              71.3130512058034,
              1.763788557966418
            ],
            [
              -156.74232212333845,
              71.31286357763223,
              0.863788557966418
            ]
          ]
        ]
      },
      "bbox": [
        -156.7428522,
        71.31286358,
        0.863788558,
        -156.7288132,
        71.31737423,
        1.763788558
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:54Z",
        "pc:count": 1666797,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100301.5459,
            "count": 1666797,
            "maximum": -100054.4957,
            "minimum": -100550.3757,
            "name": "X",
            "position": 0,
            "stddev": 133.8881469,
            "variance": 17926.03587
          },
          {
            "average": 2370609.253,
            "count": 1666797,
            "maximum": 2370849.159,
            "minimum": 2370378.279,
            "name": "Y",
            "position": 1,
            "stddev": 128.5728619,
            "variance": 16530.98083
          },
          {
            "average": 1.156888672,
            "count": 1666797,
            "maximum": 1.763788558,
            "minimum": 0.863788558,
            "name": "Z",
            "position": 2,
            "stddev": 0.06464728202,
            "variance": 0.004179271073
          },
          {
            "average": 14462.55936,
            "count": 1666797,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10838.90317,
            "variance": 117481821.8
          },
          {
            "average": 1,
            "count": 1666797,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1666797,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4944405348,
            "count": 1666797,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999692414,
            "variance": 0.2499692423
          },
          {
            "average": 0.0006425497526,
            "count": 1666797,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02534042754,
            "variance": 0.0006421372677
          },
          {
            "average": 7.667752582,
            "count": 1666797,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.456993928,
            "variance": 6.036819164
          },
          {
            "average": 2.670479457,
            "count": 1666797,
            "maximum": 16.21800041,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.25111195,
            "variance": 52.57862452
          },
          {
            "average": 0.4859224009,
            "count": 1666797,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998019318,
            "variance": 0.2498019711
          },
          {
            "average": 403.6704608,
            "count": 1666797,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.70978596,
            "variance": 0.5037961091
          },
          {
            "average": 220413737.1,
            "count": 1666797,
            "maximum": 220414514.3,
            "minimum": 220412787.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 382.6605262,
            "variance": 146429.0783
          },
          {
            "average": 0.4859224009,
            "count": 1666797,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998019318,
            "variance": 0.2498019711
          },
          {
            "average": 0,
            "count": 1666797,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1666797,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1666797,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04847980888,
            "count": 1666797,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2147778962,
            "variance": 0.04612954469
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100550.3757,
          2370378.279,
          0.863788558,
          -100054.4957,
          2370849.159,
          1.763788558
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100550.37572463787,
                2370378.278885556,
                0.863788557966418
              ],
              [
                -100550.37572463787,
                2370849.158885556,
                0.863788557966418
              ],
              [
                -100054.49572463786,
                2370849.158885556,
                1.763788557966418
              ],
              [
                -100054.49572463786,
                2370378.278885556,
                1.763788557966418
              ],
              [
                -100550.37572463787,
                2370378.278885556,
                0.863788557966418
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:54+00:00",
        "end_time": "2018-09-08T03:33:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2251.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2251.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2251.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2251.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7428522,
            71.31286358,
            0.863788558,
            -156.7288132,
            71.31737423,
            1.763788558
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74232212333845,
                  71.31286357763223,
                  0.863788557966418
                ],
                [
                  -156.74285222619483,
                  71.31718655617314,
                  0.863788557966418
                ],
                [
                  -156.729340682722,
                  71.31737422609362,
                  1.763788557966418
                ],
                [
                  -156.72881318530494,
                  71.3130512058034,
                  1.763788557966418
                ],
                [
                  -156.74232212333845,
                  71.31286357763223,
                  0.863788557966418
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2251.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2251.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:54Z",
            "pc:count": 1666797,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100301.5459,
                "count": 1666797,
                "maximum": -100054.4957,
                "minimum": -100550.3757,
                "name": "X",
                "position": 0,
                "stddev": 133.8881469,
                "variance": 17926.03587
              },
              {
                "average": 2370609.253,
                "count": 1666797,
                "maximum": 2370849.159,
                "minimum": 2370378.279,
                "name": "Y",
                "position": 1,
                "stddev": 128.5728619,
                "variance": 16530.98083
              },
              {
                "average": 1.156888672,
                "count": 1666797,
                "maximum": 1.763788558,
                "minimum": 0.863788558,
                "name": "Z",
                "position": 2,
                "stddev": 0.06464728202,
                "variance": 0.004179271073
              },
              {
                "average": 14462.55936,
                "count": 1666797,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10838.90317,
                "variance": 117481821.8
              },
              {
                "average": 1,
                "count": 1666797,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1666797,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4944405348,
                "count": 1666797,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999692414,
                "variance": 0.2499692423
              },
              {
                "average": 0.0006425497526,
                "count": 1666797,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02534042754,
                "variance": 0.0006421372677
              },
              {
                "average": 7.667752582,
                "count": 1666797,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.456993928,
                "variance": 6.036819164
              },
              {
                "average": 2.670479457,
                "count": 1666797,
                "maximum": 16.21800041,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.25111195,
                "variance": 52.57862452
              },
              {
                "average": 0.4859224009,
                "count": 1666797,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998019318,
                "variance": 0.2498019711
              },
              {
                "average": 403.6704608,
                "count": 1666797,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.70978596,
                "variance": 0.5037961091
              },
              {
                "average": 220413737.1,
                "count": 1666797,
                "maximum": 220414514.3,
                "minimum": 220412787.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 382.6605262,
                "variance": 146429.0783
              },
              {
                "average": 0.4859224009,
                "count": 1666797,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998019318,
                "variance": 0.2498019711
              },
              {
                "average": 0,
                "count": 1666797,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1666797,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1666797,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04847980888,
                "count": 1666797,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2147778962,
                "variance": 0.04612954469
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100550.3757,
              2370378.279,
              0.863788558,
              -100054.4957,
              2370849.159,
              1.763788558
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100550.37572463787,
                    2370378.278885556,
                    0.863788557966418
                  ],
                  [
                    -100550.37572463787,
                    2370849.158885556,
                    0.863788557966418
                  ],
                  [
                    -100054.49572463786,
                    2370849.158885556,
                    1.763788557966418
                  ],
                  [
                    -100054.49572463786,
                    2370378.278885556,
                    1.763788557966418
                  ],
                  [
                    -100550.37572463787,
                    2370378.278885556,
                    0.863788557966418
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:54+00:00",
            "end_time": "2018-09-08T03:33:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2288.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65230674712137,
              71.3204386370937,
              1.344549800702162
            ],
            [
              -156.6528225522929,
              71.32478668308502,
              1.344549800702162
            ],
            [
              -156.63930295130174,
              71.32496822684469,
              15.564549800702164
            ],
            [
              -156.63878976928157,
              71.32062014021491,
              15.564549800702164
            ],
            [
              -156.65230674712137,
              71.3204386370937,
              1.344549800702162
            ]
          ]
        ]
      },
      "bbox": [
        -156.6528226,
        71.32043864,
        1.344549801,
        -156.6387898,
        71.32496823,
        15.5645498
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:43Z",
        "pc:count": 2983579,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96966.79161,
            "count": 2983579,
            "maximum": -96722.74793,
            "minimum": -97218.72793,
            "name": "X",
            "position": 0,
            "stddev": 134.7482066,
            "variance": 18157.07917
          },
          {
            "average": 2371297.457,
            "count": 2983579,
            "maximum": 2371541.528,
            "minimum": 2371067.968,
            "name": "Y",
            "position": 1,
            "stddev": 126.8839449,
            "variance": 16099.53547
          },
          {
            "average": 3.702655422,
            "count": 2983579,
            "maximum": 15.5645498,
            "minimum": 1.344549801,
            "name": "Z",
            "position": 2,
            "stddev": 0.4882302339,
            "variance": 0.2383687613
          },
          {
            "average": 40241.34848,
            "count": 2983579,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10751.1032,
            "variance": 115586219.9
          },
          {
            "average": 1.002030447,
            "count": 2983579,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04514112317,
            "variance": 0.002037721001
          },
          {
            "average": 1.004062906,
            "count": 2983579,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06386897745,
            "variance": 0.00407924628
          },
          {
            "average": 0.5002756756,
            "count": 2983579,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000078,
            "variance": 0.2500000078
          },
          {
            "average": 0.0004484546915,
            "count": 2983579,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02117200345,
            "variance": 0.0004482537301
          },
          {
            "average": 1.396940386,
            "count": 2983579,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8371091235,
            "variance": 0.7007516847
          },
          {
            "average": -0.1678643513,
            "count": 2983579,
            "maximum": 16.29599953,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.47815353,
            "variance": 109.7917013
          },
          {
            "average": 0.4826833813,
            "count": 2983579,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997001285,
            "variance": 0.2497002184
          },
          {
            "average": 407.8811974,
            "count": 2983579,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9236664566,
            "variance": 0.853159723
          },
          {
            "average": 220416102.4,
            "count": 2983579,
            "maximum": 220417323.9,
            "minimum": 220415060.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 527.2989483,
            "variance": 278044.1808
          },
          {
            "average": 0.4826833813,
            "count": 2983579,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997001285,
            "variance": 0.2497002184
          },
          {
            "average": 0,
            "count": 2983579,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2983579,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2983579,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.235686067,
            "count": 2983579,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4244269138,
            "variance": 0.1801382052
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97218.72793,
          2371067.968,
          1.344549801,
          -96722.74793,
          2371541.528,
          15.5645498
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97218.72792556112,
                2371067.9683238934,
                1.344549800702162
              ],
              [
                -97218.72792556112,
                2371541.528323893,
                1.344549800702162
              ],
              [
                -96722.74792556111,
                2371541.528323893,
                15.564549800702164
              ],
              [
                -96722.74792556111,
                2371067.9683238934,
                15.564549800702164
              ],
              [
                -97218.72792556112,
                2371067.9683238934,
                1.344549800702162
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:43+00:00",
        "end_time": "2018-09-08T04:11:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2288.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2288.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2288.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2288.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6528226,
            71.32043864,
            1.344549801,
            -156.6387898,
            71.32496823,
            15.5645498
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65230674712137,
                  71.3204386370937,
                  1.344549800702162
                ],
                [
                  -156.6528225522929,
                  71.32478668308502,
                  1.344549800702162
                ],
                [
                  -156.63930295130174,
                  71.32496822684469,
                  15.564549800702164
                ],
                [
                  -156.63878976928157,
                  71.32062014021491,
                  15.564549800702164
                ],
                [
                  -156.65230674712137,
                  71.3204386370937,
                  1.344549800702162
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2288.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2288.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:43Z",
            "pc:count": 2983579,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96966.79161,
                "count": 2983579,
                "maximum": -96722.74793,
                "minimum": -97218.72793,
                "name": "X",
                "position": 0,
                "stddev": 134.7482066,
                "variance": 18157.07917
              },
              {
                "average": 2371297.457,
                "count": 2983579,
                "maximum": 2371541.528,
                "minimum": 2371067.968,
                "name": "Y",
                "position": 1,
                "stddev": 126.8839449,
                "variance": 16099.53547
              },
              {
                "average": 3.702655422,
                "count": 2983579,
                "maximum": 15.5645498,
                "minimum": 1.344549801,
                "name": "Z",
                "position": 2,
                "stddev": 0.4882302339,
                "variance": 0.2383687613
              },
              {
                "average": 40241.34848,
                "count": 2983579,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10751.1032,
                "variance": 115586219.9
              },
              {
                "average": 1.002030447,
                "count": 2983579,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04514112317,
                "variance": 0.002037721001
              },
              {
                "average": 1.004062906,
                "count": 2983579,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06386897745,
                "variance": 0.00407924628
              },
              {
                "average": 0.5002756756,
                "count": 2983579,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000078,
                "variance": 0.2500000078
              },
              {
                "average": 0.0004484546915,
                "count": 2983579,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02117200345,
                "variance": 0.0004482537301
              },
              {
                "average": 1.396940386,
                "count": 2983579,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8371091235,
                "variance": 0.7007516847
              },
              {
                "average": -0.1678643513,
                "count": 2983579,
                "maximum": 16.29599953,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.47815353,
                "variance": 109.7917013
              },
              {
                "average": 0.4826833813,
                "count": 2983579,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997001285,
                "variance": 0.2497002184
              },
              {
                "average": 407.8811974,
                "count": 2983579,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9236664566,
                "variance": 0.853159723
              },
              {
                "average": 220416102.4,
                "count": 2983579,
                "maximum": 220417323.9,
                "minimum": 220415060.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 527.2989483,
                "variance": 278044.1808
              },
              {
                "average": 0.4826833813,
                "count": 2983579,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997001285,
                "variance": 0.2497002184
              },
              {
                "average": 0,
                "count": 2983579,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2983579,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2983579,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.235686067,
                "count": 2983579,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4244269138,
                "variance": 0.1801382052
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97218.72793,
              2371067.968,
              1.344549801,
              -96722.74793,
              2371541.528,
              15.5645498
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97218.72792556112,
                    2371067.9683238934,
                    1.344549800702162
                  ],
                  [
                    -97218.72792556112,
                    2371541.528323893,
                    1.344549800702162
                  ],
                  [
                    -96722.74792556111,
                    2371541.528323893,
                    15.564549800702164
                  ],
                  [
                    -96722.74792556111,
                    2371067.9683238934,
                    15.564549800702164
                  ],
                  [
                    -97218.72792556112,
                    2371067.9683238934,
                    1.344549800702162
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:43+00:00",
            "end_time": "2018-09-08T04:11:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2358.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.586601894369,
              71.34455203792109,
              -11.638912020374903
            ],
            [
              -156.5871053858936,
              71.34890023257987,
              -11.638912020374903
            ],
            [
              -156.57356466754084,
              71.34907737672548,
              17.541087979625097
            ],
            [
              -156.57306380596268,
              71.34472914235644,
              17.541087979625097
            ],
            [
              -156.586601894369,
              71.34455203792109,
              -11.638912020374903
            ]
          ]
        ]
      },
      "bbox": [
        -156.5871054,
        71.34455204,
        -11.63891202,
        -156.5730638,
        71.34907738,
        17.54108798
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:53Z",
        "pc:count": 1889470,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94461.99242,
            "count": 1889470,
            "maximum": -94213.21438,
            "minimum": -94709.41438,
            "name": "X",
            "position": 0,
            "stddev": 135.4130037,
            "variance": 18336.68158
          },
          {
            "average": 2373840.363,
            "count": 1889470,
            "maximum": 2374068.463,
            "minimum": 2373594.983,
            "name": "Y",
            "position": 1,
            "stddev": 130.3521334,
            "variance": 16991.67868
          },
          {
            "average": 1.117580012,
            "count": 1889470,
            "maximum": 17.54108798,
            "minimum": -11.63891202,
            "name": "Z",
            "position": 2,
            "stddev": 0.1398834314,
            "variance": 0.01956737437
          },
          {
            "average": 15732.62839,
            "count": 1889470,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11380.8234,
            "variance": 129523141.2
          },
          {
            "average": 1.000001058,
            "count": 1889470,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001028832992,
            "variance": 1.058497325e-06
          },
          {
            "average": 1.000002117,
            "count": 1889470,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001454988801,
            "variance": 2.11699241e-06
          },
          {
            "average": 0.5059450534,
            "count": 1889470,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999647874,
            "variance": 0.2499647886
          },
          {
            "average": 0.0005938173138,
            "count": 1889470,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02436113727,
            "variance": 0.0005934650089
          },
          {
            "average": 7.473565603,
            "count": 1889470,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.764635296,
            "variance": 7.64320832
          },
          {
            "average": -1.708824038,
            "count": 1889470,
            "maximum": 16.34399986,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.560312892,
            "variance": 57.15833103
          },
          {
            "average": 0.4863353215,
            "count": 1889470,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998133739,
            "variance": 0.2498134088
          },
          {
            "average": 406.6873091,
            "count": 1889470,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7304848472,
            "variance": 0.533608112
          },
          {
            "average": 220415420.7,
            "count": 1889470,
            "maximum": 220416673.3,
            "minimum": 220414391.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 400.7617087,
            "variance": 160609.9472
          },
          {
            "average": 0.4863353215,
            "count": 1889470,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998133739,
            "variance": 0.2498134088
          },
          {
            "average": 0,
            "count": 1889470,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1889470,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1889470,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06950520516,
            "count": 1889470,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2543113561,
            "variance": 0.06467426585
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94709.41438,
          2373594.983,
          -11.63891202,
          -94213.21438,
          2374068.463,
          17.54108798
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94709.41437687063,
                2373594.983079043,
                -11.638912020374903
              ],
              [
                -94709.41437687063,
                2374068.4630790437,
                -11.638912020374903
              ],
              [
                -94213.21437687062,
                2374068.4630790437,
                17.541087979625097
              ],
              [
                -94213.21437687062,
                2373594.983079043,
                17.541087979625097
              ],
              [
                -94709.41437687063,
                2373594.983079043,
                -11.638912020374903
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:53+00:00",
        "end_time": "2018-09-08T03:59:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2358.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2358.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2358.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2358.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5871054,
            71.34455204,
            -11.63891202,
            -156.5730638,
            71.34907738,
            17.54108798
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.586601894369,
                  71.34455203792109,
                  -11.638912020374903
                ],
                [
                  -156.5871053858936,
                  71.34890023257987,
                  -11.638912020374903
                ],
                [
                  -156.57356466754084,
                  71.34907737672548,
                  17.541087979625097
                ],
                [
                  -156.57306380596268,
                  71.34472914235644,
                  17.541087979625097
                ],
                [
                  -156.586601894369,
                  71.34455203792109,
                  -11.638912020374903
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2358.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2358.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:53Z",
            "pc:count": 1889470,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94461.99242,
                "count": 1889470,
                "maximum": -94213.21438,
                "minimum": -94709.41438,
                "name": "X",
                "position": 0,
                "stddev": 135.4130037,
                "variance": 18336.68158
              },
              {
                "average": 2373840.363,
                "count": 1889470,
                "maximum": 2374068.463,
                "minimum": 2373594.983,
                "name": "Y",
                "position": 1,
                "stddev": 130.3521334,
                "variance": 16991.67868
              },
              {
                "average": 1.117580012,
                "count": 1889470,
                "maximum": 17.54108798,
                "minimum": -11.63891202,
                "name": "Z",
                "position": 2,
                "stddev": 0.1398834314,
                "variance": 0.01956737437
              },
              {
                "average": 15732.62839,
                "count": 1889470,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11380.8234,
                "variance": 129523141.2
              },
              {
                "average": 1.000001058,
                "count": 1889470,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001028832992,
                "variance": 1.058497325e-06
              },
              {
                "average": 1.000002117,
                "count": 1889470,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001454988801,
                "variance": 2.11699241e-06
              },
              {
                "average": 0.5059450534,
                "count": 1889470,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999647874,
                "variance": 0.2499647886
              },
              {
                "average": 0.0005938173138,
                "count": 1889470,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02436113727,
                "variance": 0.0005934650089
              },
              {
                "average": 7.473565603,
                "count": 1889470,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.764635296,
                "variance": 7.64320832
              },
              {
                "average": -1.708824038,
                "count": 1889470,
                "maximum": 16.34399986,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.560312892,
                "variance": 57.15833103
              },
              {
                "average": 0.4863353215,
                "count": 1889470,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998133739,
                "variance": 0.2498134088
              },
              {
                "average": 406.6873091,
                "count": 1889470,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7304848472,
                "variance": 0.533608112
              },
              {
                "average": 220415420.7,
                "count": 1889470,
                "maximum": 220416673.3,
                "minimum": 220414391.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 400.7617087,
                "variance": 160609.9472
              },
              {
                "average": 0.4863353215,
                "count": 1889470,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998133739,
                "variance": 0.2498134088
              },
              {
                "average": 0,
                "count": 1889470,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1889470,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1889470,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06950520516,
                "count": 1889470,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2543113561,
                "variance": 0.06467426585
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94709.41438,
              2373594.983,
              -11.63891202,
              -94213.21438,
              2374068.463,
              17.54108798
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94709.41437687063,
                    2373594.983079043,
                    -11.638912020374903
                  ],
                  [
                    -94709.41437687063,
                    2374068.4630790437,
                    -11.638912020374903
                  ],
                  [
                    -94213.21437687062,
                    2374068.4630790437,
                    17.541087979625097
                  ],
                  [
                    -94213.21437687062,
                    2373594.983079043,
                    17.541087979625097
                  ],
                  [
                    -94709.41437687063,
                    2373594.983079043,
                    -11.638912020374903
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:53+00:00",
            "end_time": "2018-09-08T03:59:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2217.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71730768007598,
              71.30449747408343,
              2.103933684565753
            ],
            [
              -156.71783576524888,
              71.3088450616678,
              2.103933684565753
            ],
            [
              -156.7043274143323,
              71.30903102875227,
              68.42393368456575
            ],
            [
              -156.70380194806162,
              71.304683399582,
              68.42393368456575
            ],
            [
              -156.71730768007598,
              71.30449747408343,
              2.103933684565753
            ]
          ]
        ]
      },
      "bbox": [
        -156.7178358,
        71.30449747,
        2.103933685,
        -156.7038019,
        71.30903103,
        68.42393368
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:49Z",
        "pc:count": 2956513,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99403.86144,
            "count": 2956513,
            "maximum": -99175.0125,
            "minimum": -99670.9525,
            "name": "X",
            "position": 0,
            "stddev": 132.7649311,
            "variance": 17626.52694
          },
          {
            "average": 2369668.823,
            "count": 2956513,
            "maximum": 2369904.381,
            "minimum": 2369430.801,
            "name": "Y",
            "position": 1,
            "stddev": 127.7965736,
            "variance": 16331.96424
          },
          {
            "average": 5.205353594,
            "count": 2956513,
            "maximum": 68.42393368,
            "minimum": 2.103933685,
            "name": "Z",
            "position": 2,
            "stddev": 1.595267138,
            "variance": 2.54487724
          },
          {
            "average": 37823.76798,
            "count": 2956513,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11008.44911,
            "variance": 121185951.9
          },
          {
            "average": 1.004602719,
            "count": 2956513,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07017965661,
            "variance": 0.004925184201
          },
          {
            "average": 1.009205101,
            "count": 2956513,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.100753732,
            "variance": 0.01015131452
          },
          {
            "average": 0.5003982732,
            "count": 2956513,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999259,
            "variance": 0.2499999259
          },
          {
            "average": 0.0004437660176,
            "count": 2956513,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02106108353,
            "variance": 0.0004435692394
          },
          {
            "average": 1.611228836,
            "count": 2956513,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.487162743,
            "variance": 2.211653023
          },
          {
            "average": -0.4569322863,
            "count": 2956513,
            "maximum": 16.30800056,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.12618916,
            "variance": 102.5397068
          },
          {
            "average": 0.4746486824,
            "count": 2956513,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993569816,
            "variance": 0.249357395
          },
          {
            "average": 407.1648307,
            "count": 2956513,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8994352201,
            "variance": 0.8089837152
          },
          {
            "average": 220415694.9,
            "count": 2956513,
            "maximum": 220416789.3,
            "minimum": 220414505.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 513.70007,
            "variance": 263887.7619
          },
          {
            "average": 0.4746486824,
            "count": 2956513,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993569816,
            "variance": 0.249357395
          },
          {
            "average": 0,
            "count": 2956513,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2956513,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2956513,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2075840695,
            "count": 2956513,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4055773406,
            "variance": 0.1644929792
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99670.9525,
          2369430.801,
          2.103933685,
          -99175.0125,
          2369904.381,
          68.42393368
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99670.9524954359,
                2369430.8010602333,
                2.103933684565753
              ],
              [
                -99670.9524954359,
                2369904.3810602333,
                2.103933684565753
              ],
              [
                -99175.01249543589,
                2369904.3810602333,
                68.42393368456575
              ],
              [
                -99175.01249543589,
                2369430.8010602333,
                68.42393368456575
              ],
              [
                -99670.9524954359,
                2369430.8010602333,
                2.103933684565753
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:49+00:00",
        "end_time": "2018-09-08T04:01:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2217.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2217.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2217.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2217.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7178358,
            71.30449747,
            2.103933685,
            -156.7038019,
            71.30903103,
            68.42393368
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71730768007598,
                  71.30449747408343,
                  2.103933684565753
                ],
                [
                  -156.71783576524888,
                  71.3088450616678,
                  2.103933684565753
                ],
                [
                  -156.7043274143323,
                  71.30903102875227,
                  68.42393368456575
                ],
                [
                  -156.70380194806162,
                  71.304683399582,
                  68.42393368456575
                ],
                [
                  -156.71730768007598,
                  71.30449747408343,
                  2.103933684565753
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2217.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2217.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:49Z",
            "pc:count": 2956513,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99403.86144,
                "count": 2956513,
                "maximum": -99175.0125,
                "minimum": -99670.9525,
                "name": "X",
                "position": 0,
                "stddev": 132.7649311,
                "variance": 17626.52694
              },
              {
                "average": 2369668.823,
                "count": 2956513,
                "maximum": 2369904.381,
                "minimum": 2369430.801,
                "name": "Y",
                "position": 1,
                "stddev": 127.7965736,
                "variance": 16331.96424
              },
              {
                "average": 5.205353594,
                "count": 2956513,
                "maximum": 68.42393368,
                "minimum": 2.103933685,
                "name": "Z",
                "position": 2,
                "stddev": 1.595267138,
                "variance": 2.54487724
              },
              {
                "average": 37823.76798,
                "count": 2956513,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11008.44911,
                "variance": 121185951.9
              },
              {
                "average": 1.004602719,
                "count": 2956513,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07017965661,
                "variance": 0.004925184201
              },
              {
                "average": 1.009205101,
                "count": 2956513,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.100753732,
                "variance": 0.01015131452
              },
              {
                "average": 0.5003982732,
                "count": 2956513,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999259,
                "variance": 0.2499999259
              },
              {
                "average": 0.0004437660176,
                "count": 2956513,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02106108353,
                "variance": 0.0004435692394
              },
              {
                "average": 1.611228836,
                "count": 2956513,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.487162743,
                "variance": 2.211653023
              },
              {
                "average": -0.4569322863,
                "count": 2956513,
                "maximum": 16.30800056,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.12618916,
                "variance": 102.5397068
              },
              {
                "average": 0.4746486824,
                "count": 2956513,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993569816,
                "variance": 0.249357395
              },
              {
                "average": 407.1648307,
                "count": 2956513,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8994352201,
                "variance": 0.8089837152
              },
              {
                "average": 220415694.9,
                "count": 2956513,
                "maximum": 220416789.3,
                "minimum": 220414505.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 513.70007,
                "variance": 263887.7619
              },
              {
                "average": 0.4746486824,
                "count": 2956513,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993569816,
                "variance": 0.249357395
              },
              {
                "average": 0,
                "count": 2956513,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2956513,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2956513,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2075840695,
                "count": 2956513,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4055773406,
                "variance": 0.1644929792
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99670.9525,
              2369430.801,
              2.103933685,
              -99175.0125,
              2369904.381,
              68.42393368
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99670.9524954359,
                    2369430.8010602333,
                    2.103933684565753
                  ],
                  [
                    -99670.9524954359,
                    2369904.3810602333,
                    2.103933684565753
                  ],
                  [
                    -99175.01249543589,
                    2369904.3810602333,
                    68.42393368456575
                  ],
                  [
                    -99175.01249543589,
                    2369430.8010602333,
                    68.42393368456575
                  ],
                  [
                    -99670.9524954359,
                    2369430.8010602333,
                    2.103933684565753
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:49+00:00",
            "end_time": "2018-09-08T04:01:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2339.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6255780219327,
              71.33664147050382,
              -7.01449948319662
            ],
            [
              -156.62608902346165,
              71.34099024882798,
              -7.01449948319662
            ],
            [
              -156.61255940761777,
              71.34116997884804,
              2.945500516803381
            ],
            [
              -156.61205103332262,
              71.33682116024698,
              2.945500516803381
            ],
            [
              -156.6255780219327,
              71.33664147050382,
              -7.01449948319662
            ]
          ]
        ]
      },
      "bbox": [
        -156.626089,
        71.33664147,
        -7.014499483,
        -156.612051,
        71.34116998,
        2.945500517
      ],
      "properties": {
        "datetime": "2018-09-08T04:30:20Z",
        "pc:count": 1888774,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95925.16342,
            "count": 1888774,
            "maximum": -95673.84408,
            "minimum": -96169.82408,
            "name": "X",
            "position": 0,
            "stddev": 135.9492593,
            "variance": 18482.20111
          },
          {
            "average": 2373033.687,
            "count": 1888774,
            "maximum": 2373264.465,
            "minimum": 2372790.885,
            "name": "Y",
            "position": 1,
            "stddev": 130.9405781,
            "variance": 17145.43498
          },
          {
            "average": 1.179894854,
            "count": 1888774,
            "maximum": 2.945500517,
            "minimum": -7.014499483,
            "name": "Z",
            "position": 2,
            "stddev": 0.1957526249,
            "variance": 0.03831909017
          },
          {
            "average": 17820.36739,
            "count": 1888774,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12562.47674,
            "variance": 157815821.8
          },
          {
            "average": 1.000000529,
            "count": 1888774,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007276290039,
            "variance": 5.294439674e-07
          },
          {
            "average": 1.000001059,
            "count": 1888774,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001029022533,
            "variance": 1.058887374e-06
          },
          {
            "average": 0.5000630038,
            "count": 1888774,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000001284,
            "variance": 0.2500001284
          },
          {
            "average": 0.0005421506226,
            "count": 1888774,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02327782168,
            "variance": 0.0005418569822
          },
          {
            "average": 7.716869779,
            "count": 1888774,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.585295691,
            "variance": 6.68375381
          },
          {
            "average": 0.3378168958,
            "count": 1888774,
            "maximum": 16.35000038,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.683258909,
            "variance": 59.03246747
          },
          {
            "average": 0.4796338789,
            "count": 1888774,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995851812,
            "variance": 0.2495853533
          },
          {
            "average": 405.9001447,
            "count": 1888774,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7316241559,
            "variance": 0.5352739056
          },
          {
            "average": 220414996.1,
            "count": 1888774,
            "maximum": 220416220.7,
            "minimum": 220413962.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 416.9255759,
            "variance": 173826.9359
          },
          {
            "average": 0.4796338789,
            "count": 1888774,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995851812,
            "variance": 0.2495853533
          },
          {
            "average": 0,
            "count": 1888774,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1888774,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1888774,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07094337385,
            "count": 1888774,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2567302991,
            "variance": 0.06591044645
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96169.82408,
          2372790.885,
          -7.014499483,
          -95673.84408,
          2373264.465,
          2.945500517
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96169.82407716222,
                2372790.88498812,
                -7.01449948319662
              ],
              [
                -96169.82407716222,
                2373264.46498812,
                -7.01449948319662
              ],
              [
                -95673.84407716221,
                2373264.46498812,
                2.945500516803381
              ],
              [
                -95673.84407716221,
                2372790.88498812,
                2.945500516803381
              ],
              [
                -96169.82407716222,
                2372790.88498812,
                -7.01449948319662
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:30:20+00:00",
        "end_time": "2018-09-08T03:52:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2339.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2339.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2339.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2339.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.626089,
            71.33664147,
            -7.014499483,
            -156.612051,
            71.34116998,
            2.945500517
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6255780219327,
                  71.33664147050382,
                  -7.01449948319662
                ],
                [
                  -156.62608902346165,
                  71.34099024882798,
                  -7.01449948319662
                ],
                [
                  -156.61255940761777,
                  71.34116997884804,
                  2.945500516803381
                ],
                [
                  -156.61205103332262,
                  71.33682116024698,
                  2.945500516803381
                ],
                [
                  -156.6255780219327,
                  71.33664147050382,
                  -7.01449948319662
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2339.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2339.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:30:20Z",
            "pc:count": 1888774,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95925.16342,
                "count": 1888774,
                "maximum": -95673.84408,
                "minimum": -96169.82408,
                "name": "X",
                "position": 0,
                "stddev": 135.9492593,
                "variance": 18482.20111
              },
              {
                "average": 2373033.687,
                "count": 1888774,
                "maximum": 2373264.465,
                "minimum": 2372790.885,
                "name": "Y",
                "position": 1,
                "stddev": 130.9405781,
                "variance": 17145.43498
              },
              {
                "average": 1.179894854,
                "count": 1888774,
                "maximum": 2.945500517,
                "minimum": -7.014499483,
                "name": "Z",
                "position": 2,
                "stddev": 0.1957526249,
                "variance": 0.03831909017
              },
              {
                "average": 17820.36739,
                "count": 1888774,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12562.47674,
                "variance": 157815821.8
              },
              {
                "average": 1.000000529,
                "count": 1888774,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007276290039,
                "variance": 5.294439674e-07
              },
              {
                "average": 1.000001059,
                "count": 1888774,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001029022533,
                "variance": 1.058887374e-06
              },
              {
                "average": 0.5000630038,
                "count": 1888774,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000001284,
                "variance": 0.2500001284
              },
              {
                "average": 0.0005421506226,
                "count": 1888774,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02327782168,
                "variance": 0.0005418569822
              },
              {
                "average": 7.716869779,
                "count": 1888774,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.585295691,
                "variance": 6.68375381
              },
              {
                "average": 0.3378168958,
                "count": 1888774,
                "maximum": 16.35000038,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.683258909,
                "variance": 59.03246747
              },
              {
                "average": 0.4796338789,
                "count": 1888774,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995851812,
                "variance": 0.2495853533
              },
              {
                "average": 405.9001447,
                "count": 1888774,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7316241559,
                "variance": 0.5352739056
              },
              {
                "average": 220414996.1,
                "count": 1888774,
                "maximum": 220416220.7,
                "minimum": 220413962.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 416.9255759,
                "variance": 173826.9359
              },
              {
                "average": 0.4796338789,
                "count": 1888774,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995851812,
                "variance": 0.2495853533
              },
              {
                "average": 0,
                "count": 1888774,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1888774,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1888774,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07094337385,
                "count": 1888774,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2567302991,
                "variance": 0.06591044645
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96169.82408,
              2372790.885,
              -7.014499483,
              -95673.84408,
              2373264.465,
              2.945500517
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96169.82407716222,
                    2372790.88498812,
                    -7.01449948319662
                  ],
                  [
                    -96169.82407716222,
                    2373264.46498812,
                    -7.01449948319662
                  ],
                  [
                    -95673.84407716221,
                    2373264.46498812,
                    2.945500516803381
                  ],
                  [
                    -95673.84407716221,
                    2372790.88498812,
                    2.945500516803381
                  ],
                  [
                    -96169.82407716222,
                    2372790.88498812,
                    -7.01449948319662
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:30:20+00:00",
            "end_time": "2018-09-08T03:52:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2315.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6517331701417,
              71.3286324826558,
              -17.34125501907416
            ],
            [
              -156.6522490527866,
              71.33298077222966,
              -17.34125501907416
            ],
            [
              -156.63872722013016,
              71.33316225009915,
              16.97874498092584
            ],
            [
              -156.6382139620335,
              71.32881391988006,
              16.97874498092584
            ],
            [
              -156.6517331701417,
              71.3286324826558,
              -17.34125501907416
            ]
          ]
        ]
      },
      "bbox": [
        -156.6522491,
        71.32863248,
        -17.34125502,
        -156.638214,
        71.33316225,
        16.97874498
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:59Z",
        "pc:count": 2170818,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96883.98249,
            "count": 2170818,
            "maximum": -96666.23985,
            "minimum": -97162.11985,
            "name": "X",
            "position": 0,
            "stddev": 129.7650969,
            "variance": 16838.98037
          },
          {
            "average": 2372200.045,
            "count": 2170818,
            "maximum": 2372431.673,
            "minimum": 2371958.113,
            "name": "Y",
            "position": 1,
            "stddev": 132.5762218,
            "variance": 17576.45457
          },
          {
            "average": 1.711241303,
            "count": 2170818,
            "maximum": 16.97874498,
            "minimum": -17.34125502,
            "name": "Z",
            "position": 2,
            "stddev": 0.4605632713,
            "variance": 0.2121185268
          },
          {
            "average": 29511.27173,
            "count": 2170818,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15504.84179,
            "variance": 240400119.1
          },
          {
            "average": 1.000025336,
            "count": 2170818,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00503343235,
            "variance": 2.533544123e-05
          },
          {
            "average": 1.000050672,
            "count": 2170818,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007118258117,
            "variance": 5.066959862e-05
          },
          {
            "average": 0.5004707903,
            "count": 2170818,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998935,
            "variance": 0.2499998935
          },
          {
            "average": 0.0004652624034,
            "count": 2170818,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02156492867,
            "variance": 0.0004650461485
          },
          {
            "average": 4.298263143,
            "count": 2170818,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.756815754,
            "variance": 14.11366461
          },
          {
            "average": 1.06263112,
            "count": 2170818,
            "maximum": 16.26600075,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.074412279,
            "variance": 82.34495822
          },
          {
            "average": 0.5071341771,
            "count": 2170818,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999492161,
            "variance": 0.2499492187
          },
          {
            "average": 406.0839089,
            "count": 2170818,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8430010862,
            "variance": 0.7106508314
          },
          {
            "average": 220415088.8,
            "count": 2170818,
            "maximum": 220416199.1,
            "minimum": 220413941.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 480.3498961,
            "variance": 230736.0227
          },
          {
            "average": 0.5071341771,
            "count": 2170818,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999492161,
            "variance": 0.2499492187
          },
          {
            "average": 0,
            "count": 2170818,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2170818,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2170818,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1598093438,
            "count": 2170818,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3664292282,
            "variance": 0.1342703793
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97162.11985,
          2371958.113,
          -17.34125502,
          -96666.23985,
          2372431.673,
          16.97874498
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97162.11985390539,
                2371958.1133099413,
                -17.34125501907416
              ],
              [
                -97162.11985390539,
                2372431.673309941,
                -17.34125501907416
              ],
              [
                -96666.23985390538,
                2372431.673309941,
                16.97874498092584
              ],
              [
                -96666.23985390538,
                2371958.1133099413,
                16.97874498092584
              ],
              [
                -97162.11985390539,
                2371958.1133099413,
                -17.34125501907416
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:59+00:00",
        "end_time": "2018-09-08T03:52:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2315.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2315.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2315.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2315.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6522491,
            71.32863248,
            -17.34125502,
            -156.638214,
            71.33316225,
            16.97874498
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6517331701417,
                  71.3286324826558,
                  -17.34125501907416
                ],
                [
                  -156.6522490527866,
                  71.33298077222966,
                  -17.34125501907416
                ],
                [
                  -156.63872722013016,
                  71.33316225009915,
                  16.97874498092584
                ],
                [
                  -156.6382139620335,
                  71.32881391988006,
                  16.97874498092584
                ],
                [
                  -156.6517331701417,
                  71.3286324826558,
                  -17.34125501907416
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2315.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2315.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:59Z",
            "pc:count": 2170818,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96883.98249,
                "count": 2170818,
                "maximum": -96666.23985,
                "minimum": -97162.11985,
                "name": "X",
                "position": 0,
                "stddev": 129.7650969,
                "variance": 16838.98037
              },
              {
                "average": 2372200.045,
                "count": 2170818,
                "maximum": 2372431.673,
                "minimum": 2371958.113,
                "name": "Y",
                "position": 1,
                "stddev": 132.5762218,
                "variance": 17576.45457
              },
              {
                "average": 1.711241303,
                "count": 2170818,
                "maximum": 16.97874498,
                "minimum": -17.34125502,
                "name": "Z",
                "position": 2,
                "stddev": 0.4605632713,
                "variance": 0.2121185268
              },
              {
                "average": 29511.27173,
                "count": 2170818,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15504.84179,
                "variance": 240400119.1
              },
              {
                "average": 1.000025336,
                "count": 2170818,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00503343235,
                "variance": 2.533544123e-05
              },
              {
                "average": 1.000050672,
                "count": 2170818,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007118258117,
                "variance": 5.066959862e-05
              },
              {
                "average": 0.5004707903,
                "count": 2170818,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998935,
                "variance": 0.2499998935
              },
              {
                "average": 0.0004652624034,
                "count": 2170818,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02156492867,
                "variance": 0.0004650461485
              },
              {
                "average": 4.298263143,
                "count": 2170818,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.756815754,
                "variance": 14.11366461
              },
              {
                "average": 1.06263112,
                "count": 2170818,
                "maximum": 16.26600075,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.074412279,
                "variance": 82.34495822
              },
              {
                "average": 0.5071341771,
                "count": 2170818,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999492161,
                "variance": 0.2499492187
              },
              {
                "average": 406.0839089,
                "count": 2170818,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8430010862,
                "variance": 0.7106508314
              },
              {
                "average": 220415088.8,
                "count": 2170818,
                "maximum": 220416199.1,
                "minimum": 220413941.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 480.3498961,
                "variance": 230736.0227
              },
              {
                "average": 0.5071341771,
                "count": 2170818,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999492161,
                "variance": 0.2499492187
              },
              {
                "average": 0,
                "count": 2170818,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2170818,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2170818,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1598093438,
                "count": 2170818,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3664292282,
                "variance": 0.1342703793
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97162.11985,
              2371958.113,
              -17.34125502,
              -96666.23985,
              2372431.673,
              16.97874498
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97162.11985390539,
                    2371958.1133099413,
                    -17.34125501907416
                  ],
                  [
                    -97162.11985390539,
                    2372431.673309941,
                    -17.34125501907416
                  ],
                  [
                    -96666.23985390538,
                    2372431.673309941,
                    16.97874498092584
                  ],
                  [
                    -96666.23985390538,
                    2371958.1133099413,
                    16.97874498092584
                  ],
                  [
                    -97162.11985390539,
                    2371958.1133099413,
                    -17.34125501907416
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:59+00:00",
            "end_time": "2018-09-08T03:52:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2193.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76866081365057,
              71.3007406642431,
              -10.999080289017213
            ],
            [
              -156.76919882827974,
              71.30508836954826,
              -10.999080289017213
            ],
            [
              -156.7556937184515,
              71.30527784553028,
              27.000919710982785
            ],
            [
              -156.75515832162725,
              71.30093009786259,
              27.000919710982785
            ],
            [
              -156.76866081365057,
              71.3007406642431,
              -10.999080289017213
            ]
          ]
        ]
      },
      "bbox": [
        -156.7691988,
        71.30074066,
        -10.99908029,
        -156.7551583,
        71.30527785,
        27.00091971
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:50Z",
        "pc:count": 2615302,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101293.6399,
            "count": 2615302,
            "maximum": -101074.628,
            "minimum": -101570.548,
            "name": "X",
            "position": 0,
            "stddev": 131.3706736,
            "variance": 17258.25387
          },
          {
            "average": 2369317.263,
            "count": 2615302,
            "maximum": 2369573.68,
            "minimum": 2369100.06,
            "name": "Y",
            "position": 1,
            "stddev": 126.5784954,
            "variance": 16022.1155
          },
          {
            "average": 3.757865054,
            "count": 2615302,
            "maximum": 27.00091971,
            "minimum": -10.99908029,
            "name": "Z",
            "position": 2,
            "stddev": 2.9076508,
            "variance": 8.454433177
          },
          {
            "average": 23123.3772,
            "count": 2615302,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12379.8643,
            "variance": 153261040.2
          },
          {
            "average": 1.015943092,
            "count": 2615302,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1289466548,
            "variance": 0.01662723979
          },
          {
            "average": 1.031912567,
            "count": 2615302,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.183608818,
            "variance": 0.03371219804
          },
          {
            "average": 0.5058004773,
            "count": 2615302,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999664489,
            "variance": 0.24996645
          },
          {
            "average": 0.0003911594149,
            "count": 2615302,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01977388578,
            "variance": 0.0003910065587
          },
          {
            "average": 3.997045848,
            "count": 2615302,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.408511345,
            "variance": 11.61794959
          },
          {
            "average": -1.436979451,
            "count": 2615302,
            "maximum": 16.3560009,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.546502911,
            "variance": 91.13571783
          },
          {
            "average": 0.4931243122,
            "count": 2615302,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999528183,
            "variance": 0.2499528205
          },
          {
            "average": 404.742484,
            "count": 2615302,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8243185047,
            "variance": 0.6795009972
          },
          {
            "average": 220414315.3,
            "count": 2615302,
            "maximum": 220414990.9,
            "minimum": 220413423.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 474.2261171,
            "variance": 224890.4101
          },
          {
            "average": 0.4931243122,
            "count": 2615302,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999528183,
            "variance": 0.2499528205
          },
          {
            "average": 0,
            "count": 2615302,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2615302,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2615302,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1708770154,
            "count": 2615302,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3764015345,
            "variance": 0.1416781151
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101570.548,
          2369100.06,
          -10.99908029,
          -101074.628,
          2369573.68,
          27.00091971
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101570.54800191497,
                2369100.0603607018,
                -10.999080289017213
              ],
              [
                -101570.54800191497,
                2369573.680360702,
                -10.999080289017213
              ],
              [
                -101074.62800191496,
                2369573.680360702,
                27.000919710982785
              ],
              [
                -101074.62800191496,
                2369100.0603607018,
                27.000919710982785
              ],
              [
                -101570.54800191497,
                2369100.0603607018,
                -10.999080289017213
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:50+00:00",
        "end_time": "2018-09-08T03:43:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2193.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2193.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2193.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2193.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7691988,
            71.30074066,
            -10.99908029,
            -156.7551583,
            71.30527785,
            27.00091971
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76866081365057,
                  71.3007406642431,
                  -10.999080289017213
                ],
                [
                  -156.76919882827974,
                  71.30508836954826,
                  -10.999080289017213
                ],
                [
                  -156.7556937184515,
                  71.30527784553028,
                  27.000919710982785
                ],
                [
                  -156.75515832162725,
                  71.30093009786259,
                  27.000919710982785
                ],
                [
                  -156.76866081365057,
                  71.3007406642431,
                  -10.999080289017213
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2193.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2193.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:50Z",
            "pc:count": 2615302,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101293.6399,
                "count": 2615302,
                "maximum": -101074.628,
                "minimum": -101570.548,
                "name": "X",
                "position": 0,
                "stddev": 131.3706736,
                "variance": 17258.25387
              },
              {
                "average": 2369317.263,
                "count": 2615302,
                "maximum": 2369573.68,
                "minimum": 2369100.06,
                "name": "Y",
                "position": 1,
                "stddev": 126.5784954,
                "variance": 16022.1155
              },
              {
                "average": 3.757865054,
                "count": 2615302,
                "maximum": 27.00091971,
                "minimum": -10.99908029,
                "name": "Z",
                "position": 2,
                "stddev": 2.9076508,
                "variance": 8.454433177
              },
              {
                "average": 23123.3772,
                "count": 2615302,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12379.8643,
                "variance": 153261040.2
              },
              {
                "average": 1.015943092,
                "count": 2615302,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1289466548,
                "variance": 0.01662723979
              },
              {
                "average": 1.031912567,
                "count": 2615302,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.183608818,
                "variance": 0.03371219804
              },
              {
                "average": 0.5058004773,
                "count": 2615302,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999664489,
                "variance": 0.24996645
              },
              {
                "average": 0.0003911594149,
                "count": 2615302,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01977388578,
                "variance": 0.0003910065587
              },
              {
                "average": 3.997045848,
                "count": 2615302,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.408511345,
                "variance": 11.61794959
              },
              {
                "average": -1.436979451,
                "count": 2615302,
                "maximum": 16.3560009,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.546502911,
                "variance": 91.13571783
              },
              {
                "average": 0.4931243122,
                "count": 2615302,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999528183,
                "variance": 0.2499528205
              },
              {
                "average": 404.742484,
                "count": 2615302,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8243185047,
                "variance": 0.6795009972
              },
              {
                "average": 220414315.3,
                "count": 2615302,
                "maximum": 220414990.9,
                "minimum": 220413423.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 474.2261171,
                "variance": 224890.4101
              },
              {
                "average": 0.4931243122,
                "count": 2615302,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999528183,
                "variance": 0.2499528205
              },
              {
                "average": 0,
                "count": 2615302,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2615302,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2615302,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1708770154,
                "count": 2615302,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3764015345,
                "variance": 0.1416781151
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101570.548,
              2369100.06,
              -10.99908029,
              -101074.628,
              2369573.68,
              27.00091971
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101570.54800191497,
                    2369100.0603607018,
                    -10.999080289017213
                  ],
                  [
                    -101570.54800191497,
                    2369573.680360702,
                    -10.999080289017213
                  ],
                  [
                    -101074.62800191496,
                    2369573.680360702,
                    27.000919710982785
                  ],
                  [
                    -101074.62800191496,
                    2369100.0603607018,
                    27.000919710982785
                  ],
                  [
                    -101570.54800191497,
                    2369100.0603607018,
                    -10.999080289017213
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:50+00:00",
            "end_time": "2018-09-08T03:43:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2261.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6145444286986,
              71.31196741576741,
              2.249991105932089
            ],
            [
              -156.61505278729362,
              71.31631604450928,
              2.249991105932089
            ],
            [
              -156.60153909036885,
              71.3164949737466,
              5.929991105932088
            ],
            [
              -156.60103335340722,
              71.31214630496578,
              5.929991105932088
            ],
            [
              -156.6145444286986,
              71.31196741576741,
              2.249991105932089
            ]
          ]
        ]
      },
      "bbox": [
        -156.6150528,
        71.31196742,
        2.249991106,
        -156.6010334,
        71.31649497,
        5.929991106
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:24Z",
        "pc:count": 3294094,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95620.9946,
            "count": 3294094,
            "maximum": -95375.63924,
            "minimum": -95871.57924,
            "name": "X",
            "position": 0,
            "stddev": 134.7401977,
            "variance": 18154.92089
          },
          {
            "average": 2370330.204,
            "count": 3294094,
            "maximum": 2370565.503,
            "minimum": 2370091.863,
            "name": "Y",
            "position": 1,
            "stddev": 127.3372274,
            "variance": 16214.76948
          },
          {
            "average": 2.701704263,
            "count": 3294094,
            "maximum": 5.929991106,
            "minimum": 2.249991106,
            "name": "Z",
            "position": 2,
            "stddev": 0.3472039717,
            "variance": 0.120550598
          },
          {
            "average": 32953.68122,
            "count": 3294094,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8755.545631,
            "variance": 76659579.29
          },
          {
            "average": 1.000000911,
            "count": 3294094,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000954316651,
            "variance": 9.107202704e-07
          },
          {
            "average": 1.000001821,
            "count": 3294094,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001349606936,
            "variance": 1.821438882e-06
          },
          {
            "average": 0.5020542826,
            "count": 3294094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958558,
            "variance": 0.2499958558
          },
          {
            "average": 0.0003864492027,
            "count": 3294094,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01965451544,
            "variance": 0.000386299977
          },
          {
            "average": 1.272085435,
            "count": 3294094,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4450746456,
            "variance": 0.1980914402
          },
          {
            "average": 1.132069727,
            "count": 3294094,
            "maximum": 16.33200073,
            "minimum": -15.95400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.50141306,
            "variance": 110.2796763
          },
          {
            "average": 0.5256613806,
            "count": 3294094,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993411351,
            "variance": 0.2493415692
          },
          {
            "average": 412.1676661,
            "count": 3294094,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9469288971,
            "variance": 0.8966743361
          },
          {
            "average": 220418505.1,
            "count": 3294094,
            "maximum": 220419524.3,
            "minimum": 220417326.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 522.4229841,
            "variance": 272925.7743
          },
          {
            "average": 0.5256613806,
            "count": 3294094,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993411351,
            "variance": 0.2493415692
          },
          {
            "average": 0,
            "count": 3294094,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3294094,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3294094,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2495132197,
            "count": 3294094,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4327313598,
            "variance": 0.1872564298
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95871.57924,
          2370091.863,
          2.249991106,
          -95375.63924,
          2370565.503,
          5.929991106
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95871.57924086106,
                2370091.8631563853,
                2.249991105932089
              ],
              [
                -95871.57924086106,
                2370565.503156385,
                2.249991105932089
              ],
              [
                -95375.63924086106,
                2370565.503156385,
                5.929991105932088
              ],
              [
                -95375.63924086106,
                2370091.8631563853,
                5.929991105932088
              ],
              [
                -95871.57924086106,
                2370091.8631563853,
                2.249991105932089
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:24+00:00",
        "end_time": "2018-09-08T04:48:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2261.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2261.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2261.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2261.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6150528,
            71.31196742,
            2.249991106,
            -156.6010334,
            71.31649497,
            5.929991106
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6145444286986,
                  71.31196741576741,
                  2.249991105932089
                ],
                [
                  -156.61505278729362,
                  71.31631604450928,
                  2.249991105932089
                ],
                [
                  -156.60153909036885,
                  71.3164949737466,
                  5.929991105932088
                ],
                [
                  -156.60103335340722,
                  71.31214630496578,
                  5.929991105932088
                ],
                [
                  -156.6145444286986,
                  71.31196741576741,
                  2.249991105932089
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2261.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2261.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:24Z",
            "pc:count": 3294094,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95620.9946,
                "count": 3294094,
                "maximum": -95375.63924,
                "minimum": -95871.57924,
                "name": "X",
                "position": 0,
                "stddev": 134.7401977,
                "variance": 18154.92089
              },
              {
                "average": 2370330.204,
                "count": 3294094,
                "maximum": 2370565.503,
                "minimum": 2370091.863,
                "name": "Y",
                "position": 1,
                "stddev": 127.3372274,
                "variance": 16214.76948
              },
              {
                "average": 2.701704263,
                "count": 3294094,
                "maximum": 5.929991106,
                "minimum": 2.249991106,
                "name": "Z",
                "position": 2,
                "stddev": 0.3472039717,
                "variance": 0.120550598
              },
              {
                "average": 32953.68122,
                "count": 3294094,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8755.545631,
                "variance": 76659579.29
              },
              {
                "average": 1.000000911,
                "count": 3294094,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000954316651,
                "variance": 9.107202704e-07
              },
              {
                "average": 1.000001821,
                "count": 3294094,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001349606936,
                "variance": 1.821438882e-06
              },
              {
                "average": 0.5020542826,
                "count": 3294094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958558,
                "variance": 0.2499958558
              },
              {
                "average": 0.0003864492027,
                "count": 3294094,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01965451544,
                "variance": 0.000386299977
              },
              {
                "average": 1.272085435,
                "count": 3294094,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4450746456,
                "variance": 0.1980914402
              },
              {
                "average": 1.132069727,
                "count": 3294094,
                "maximum": 16.33200073,
                "minimum": -15.95400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.50141306,
                "variance": 110.2796763
              },
              {
                "average": 0.5256613806,
                "count": 3294094,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993411351,
                "variance": 0.2493415692
              },
              {
                "average": 412.1676661,
                "count": 3294094,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9469288971,
                "variance": 0.8966743361
              },
              {
                "average": 220418505.1,
                "count": 3294094,
                "maximum": 220419524.3,
                "minimum": 220417326.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 522.4229841,
                "variance": 272925.7743
              },
              {
                "average": 0.5256613806,
                "count": 3294094,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993411351,
                "variance": 0.2493415692
              },
              {
                "average": 0,
                "count": 3294094,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3294094,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3294094,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2495132197,
                "count": 3294094,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4327313598,
                "variance": 0.1872564298
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95871.57924,
              2370091.863,
              2.249991106,
              -95375.63924,
              2370565.503,
              5.929991106
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95871.57924086106,
                    2370091.8631563853,
                    2.249991105932089
                  ],
                  [
                    -95871.57924086106,
                    2370565.503156385,
                    2.249991105932089
                  ],
                  [
                    -95375.63924086106,
                    2370565.503156385,
                    5.929991105932088
                  ],
                  [
                    -95375.63924086106,
                    2370091.8631563853,
                    5.929991105932088
                  ],
                  [
                    -95871.57924086106,
                    2370091.8631563853,
                    2.249991105932089
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:24+00:00",
            "end_time": "2018-09-08T04:48:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2239.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67870950110043,
              71.30833039586831,
              1.376953054668109
            ],
            [
              -156.67923009033998,
              71.31267746456165,
              1.376953054668109
            ],
            [
              -156.66572074310764,
              71.31286076746791,
              15.776953054668109
            ],
            [
              -156.6652027731549,
              71.30851365778028,
              15.776953054668109
            ],
            [
              -156.67870950110043,
              71.30833039586831,
              1.376953054668109
            ]
          ]
        ]
      },
      "bbox": [
        -156.6792301,
        71.3083304,
        1.376953055,
        -156.6652028,
        71.31286077,
        15.77695305
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:03Z",
        "pc:count": 2665649,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97975.53225,
            "count": 2665649,
            "maximum": -97743.24112,
            "minimum": -98239.12112,
            "name": "X",
            "position": 0,
            "stddev": 134.4865862,
            "variance": 18086.64187
          },
          {
            "average": 2369999.133,
            "count": 2665649,
            "maximum": 2370263.613,
            "minimum": 2369790.113,
            "name": "Y",
            "position": 1,
            "stddev": 123.6777388,
            "variance": 15296.18307
          },
          {
            "average": 4.423412123,
            "count": 2665649,
            "maximum": 15.77695305,
            "minimum": 1.376953055,
            "name": "Z",
            "position": 2,
            "stddev": 1.349548232,
            "variance": 1.821280431
          },
          {
            "average": 42148.84916,
            "count": 2665649,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12542.33312,
            "variance": 157310120.1
          },
          {
            "average": 1.003587869,
            "count": 2665649,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06062620029,
            "variance": 0.003675536162
          },
          {
            "average": 1.007174613,
            "count": 2665649,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08617572977,
            "variance": 0.007426256402
          },
          {
            "average": 0.5015255197,
            "count": 2665649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999977666,
            "variance": 0.2499977666
          },
          {
            "average": 0.0004006528992,
            "count": 2665649,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02001230938,
            "variance": 0.0004004925267
          },
          {
            "average": 1.93759531,
            "count": 2665649,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.156433431,
            "variance": 4.650205144
          },
          {
            "average": 0.4661587459,
            "count": 2665649,
            "maximum": 16.31399918,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.28340995,
            "variance": 105.7485203
          },
          {
            "average": 0.4937806891,
            "count": 2665649,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999614125,
            "variance": 0.2499614139
          },
          {
            "average": 408.9714051,
            "count": 2665649,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8626709557,
            "variance": 0.7442011779
          },
          {
            "average": 220416720.5,
            "count": 2665649,
            "maximum": 220417883.4,
            "minimum": 220415610.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 490.5920611,
            "variance": 240680.5704
          },
          {
            "average": 0.4937806891,
            "count": 2665649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999614125,
            "variance": 0.2499614139
          },
          {
            "average": 0,
            "count": 2665649,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2665649,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2665649,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2124195646,
            "count": 2665649,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.409020239,
            "variance": 0.1672975559
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98239.12112,
          2369790.113,
          1.376953055,
          -97743.24112,
          2370263.613,
          15.77695305
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98239.12111744177,
                2369790.1130724833,
                1.376953054668109
              ],
              [
                -98239.12111744177,
                2370263.6130724833,
                1.376953054668109
              ],
              [
                -97743.24111744176,
                2370263.6130724833,
                15.776953054668109
              ],
              [
                -97743.24111744176,
                2369790.1130724833,
                15.776953054668109
              ],
              [
                -98239.12111744177,
                2369790.1130724833,
                1.376953054668109
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:03+00:00",
        "end_time": "2018-09-08T04:20:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2239.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2239.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2239.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2239.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6792301,
            71.3083304,
            1.376953055,
            -156.6652028,
            71.31286077,
            15.77695305
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67870950110043,
                  71.30833039586831,
                  1.376953054668109
                ],
                [
                  -156.67923009033998,
                  71.31267746456165,
                  1.376953054668109
                ],
                [
                  -156.66572074310764,
                  71.31286076746791,
                  15.776953054668109
                ],
                [
                  -156.6652027731549,
                  71.30851365778028,
                  15.776953054668109
                ],
                [
                  -156.67870950110043,
                  71.30833039586831,
                  1.376953054668109
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2239.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2239.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:03Z",
            "pc:count": 2665649,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97975.53225,
                "count": 2665649,
                "maximum": -97743.24112,
                "minimum": -98239.12112,
                "name": "X",
                "position": 0,
                "stddev": 134.4865862,
                "variance": 18086.64187
              },
              {
                "average": 2369999.133,
                "count": 2665649,
                "maximum": 2370263.613,
                "minimum": 2369790.113,
                "name": "Y",
                "position": 1,
                "stddev": 123.6777388,
                "variance": 15296.18307
              },
              {
                "average": 4.423412123,
                "count": 2665649,
                "maximum": 15.77695305,
                "minimum": 1.376953055,
                "name": "Z",
                "position": 2,
                "stddev": 1.349548232,
                "variance": 1.821280431
              },
              {
                "average": 42148.84916,
                "count": 2665649,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12542.33312,
                "variance": 157310120.1
              },
              {
                "average": 1.003587869,
                "count": 2665649,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06062620029,
                "variance": 0.003675536162
              },
              {
                "average": 1.007174613,
                "count": 2665649,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08617572977,
                "variance": 0.007426256402
              },
              {
                "average": 0.5015255197,
                "count": 2665649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999977666,
                "variance": 0.2499977666
              },
              {
                "average": 0.0004006528992,
                "count": 2665649,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02001230938,
                "variance": 0.0004004925267
              },
              {
                "average": 1.93759531,
                "count": 2665649,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.156433431,
                "variance": 4.650205144
              },
              {
                "average": 0.4661587459,
                "count": 2665649,
                "maximum": 16.31399918,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.28340995,
                "variance": 105.7485203
              },
              {
                "average": 0.4937806891,
                "count": 2665649,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999614125,
                "variance": 0.2499614139
              },
              {
                "average": 408.9714051,
                "count": 2665649,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8626709557,
                "variance": 0.7442011779
              },
              {
                "average": 220416720.5,
                "count": 2665649,
                "maximum": 220417883.4,
                "minimum": 220415610.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 490.5920611,
                "variance": 240680.5704
              },
              {
                "average": 0.4937806891,
                "count": 2665649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999614125,
                "variance": 0.2499614139
              },
              {
                "average": 0,
                "count": 2665649,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2665649,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2665649,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2124195646,
                "count": 2665649,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.409020239,
                "variance": 0.1672975559
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98239.12112,
              2369790.113,
              1.376953055,
              -97743.24112,
              2370263.613,
              15.77695305
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98239.12111744177,
                    2369790.1130724833,
                    1.376953054668109
                  ],
                  [
                    -98239.12111744177,
                    2370263.6130724833,
                    1.376953054668109
                  ],
                  [
                    -97743.24111744176,
                    2370263.6130724833,
                    15.776953054668109
                  ],
                  [
                    -97743.24111744176,
                    2369790.1130724833,
                    15.776953054668109
                  ],
                  [
                    -98239.12111744177,
                    2369790.1130724833,
                    1.376953054668109
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:03+00:00",
            "end_time": "2018-09-08T04:20:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2359.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57380127369768,
              71.3444557099579,
              0.81138916039955
            ],
            [
              -156.5743022937932,
              71.34880411801895,
              0.81138916039955
            ],
            [
              -156.56076480740825,
              71.34898034101779,
              2.63138916039955
            ],
            [
              -156.56026641679014,
              71.34463189345122,
              2.63138916039955
            ],
            [
              -156.57380127369768,
              71.3444557099579,
              0.81138916039955
            ]
          ]
        ]
      },
      "bbox": [
        -156.5743023,
        71.34445571,
        0.8113891604,
        -156.5602664,
        71.34898034,
        2.63138916
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:53Z",
        "pc:count": 1739083,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93998.68875,
            "count": 1739083,
            "maximum": -93745.27615,
            "minimum": -94241.35615,
            "name": "X",
            "position": 0,
            "stddev": 136.0184353,
            "variance": 18501.01475
          },
          {
            "average": 2373803.303,
            "count": 1739083,
            "maximum": 2374039.8,
            "minimum": 2373566.3,
            "name": "Y",
            "position": 1,
            "stddev": 128.0495364,
            "variance": 16396.68377
          },
          {
            "average": 1.079276421,
            "count": 1739083,
            "maximum": 2.63138916,
            "minimum": 0.8113891604,
            "name": "Z",
            "position": 2,
            "stddev": 0.05535578655,
            "variance": 0.003064263104
          },
          {
            "average": 15824.93873,
            "count": 1739083,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11932.59627,
            "variance": 142386853.8
          },
          {
            "average": 1,
            "count": 1739083,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1739083,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4928189166,
            "count": 1739083,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999485731,
            "variance": 0.2499485758
          },
          {
            "average": 0.0006037664677,
            "count": 1739083,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02456424802,
            "variance": 0.0006034022807
          },
          {
            "average": 7.87699207,
            "count": 1739083,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.283049222,
            "variance": 5.21231375
          },
          {
            "average": 2.803513139,
            "count": 1739083,
            "maximum": 16.23600006,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.871052965,
            "variance": 47.21136884
          },
          {
            "average": 0.4786856061,
            "count": 1739083,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995456337,
            "variance": 0.2495458401
          },
          {
            "average": 407.5636706,
            "count": 1739083,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.690363938,
            "variance": 0.4766023668
          },
          {
            "average": 220415931.1,
            "count": 1739083,
            "maximum": 220416673,
            "minimum": 220415124.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 430.1502572,
            "variance": 185029.2438
          },
          {
            "average": 0.4786856061,
            "count": 1739083,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995456337,
            "variance": 0.2495458401
          },
          {
            "average": 0,
            "count": 1739083,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1739083,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1739083,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04878605564,
            "count": 1739083,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2154205262,
            "variance": 0.0464060031
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94241.35615,
          2373566.3,
          0.8113891604,
          -93745.27615,
          2374039.8,
          2.63138916
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94241.35615481669,
                2373566.2995479554,
                0.81138916039955
              ],
              [
                -94241.35615481669,
                2374039.7995479554,
                0.81138916039955
              ],
              [
                -93745.2761548167,
                2374039.7995479554,
                2.63138916039955
              ],
              [
                -93745.2761548167,
                2373566.2995479554,
                2.63138916039955
              ],
              [
                -94241.35615481669,
                2373566.2995479554,
                0.81138916039955
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:53+00:00",
        "end_time": "2018-09-08T04:12:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2359.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2359.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2359.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2359.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5743023,
            71.34445571,
            0.8113891604,
            -156.5602664,
            71.34898034,
            2.63138916
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57380127369768,
                  71.3444557099579,
                  0.81138916039955
                ],
                [
                  -156.5743022937932,
                  71.34880411801895,
                  0.81138916039955
                ],
                [
                  -156.56076480740825,
                  71.34898034101779,
                  2.63138916039955
                ],
                [
                  -156.56026641679014,
                  71.34463189345122,
                  2.63138916039955
                ],
                [
                  -156.57380127369768,
                  71.3444557099579,
                  0.81138916039955
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2359.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2359.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:53Z",
            "pc:count": 1739083,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93998.68875,
                "count": 1739083,
                "maximum": -93745.27615,
                "minimum": -94241.35615,
                "name": "X",
                "position": 0,
                "stddev": 136.0184353,
                "variance": 18501.01475
              },
              {
                "average": 2373803.303,
                "count": 1739083,
                "maximum": 2374039.8,
                "minimum": 2373566.3,
                "name": "Y",
                "position": 1,
                "stddev": 128.0495364,
                "variance": 16396.68377
              },
              {
                "average": 1.079276421,
                "count": 1739083,
                "maximum": 2.63138916,
                "minimum": 0.8113891604,
                "name": "Z",
                "position": 2,
                "stddev": 0.05535578655,
                "variance": 0.003064263104
              },
              {
                "average": 15824.93873,
                "count": 1739083,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11932.59627,
                "variance": 142386853.8
              },
              {
                "average": 1,
                "count": 1739083,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1739083,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4928189166,
                "count": 1739083,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999485731,
                "variance": 0.2499485758
              },
              {
                "average": 0.0006037664677,
                "count": 1739083,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02456424802,
                "variance": 0.0006034022807
              },
              {
                "average": 7.87699207,
                "count": 1739083,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.283049222,
                "variance": 5.21231375
              },
              {
                "average": 2.803513139,
                "count": 1739083,
                "maximum": 16.23600006,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.871052965,
                "variance": 47.21136884
              },
              {
                "average": 0.4786856061,
                "count": 1739083,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995456337,
                "variance": 0.2495458401
              },
              {
                "average": 407.5636706,
                "count": 1739083,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.690363938,
                "variance": 0.4766023668
              },
              {
                "average": 220415931.1,
                "count": 1739083,
                "maximum": 220416673,
                "minimum": 220415124.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 430.1502572,
                "variance": 185029.2438
              },
              {
                "average": 0.4786856061,
                "count": 1739083,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995456337,
                "variance": 0.2495458401
              },
              {
                "average": 0,
                "count": 1739083,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1739083,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1739083,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04878605564,
                "count": 1739083,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2154205262,
                "variance": 0.0464060031
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94241.35615,
              2373566.3,
              0.8113891604,
              -93745.27615,
              2374039.8,
              2.63138916
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94241.35615481669,
                    2373566.2995479554,
                    0.81138916039955
                  ],
                  [
                    -94241.35615481669,
                    2374039.7995479554,
                    0.81138916039955
                  ],
                  [
                    -93745.2761548167,
                    2374039.7995479554,
                    2.63138916039955
                  ],
                  [
                    -93745.2761548167,
                    2373566.2995479554,
                    2.63138916039955
                  ],
                  [
                    -94241.35615481669,
                    2373566.2995479554,
                    0.81138916039955
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:53+00:00",
            "end_time": "2018-09-08T04:12:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2289.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63952322387289,
              71.32034760282093,
              2.733553213635324
            ],
            [
              -156.64003645547004,
              71.32469494495012,
              2.733553213635324
            ],
            [
              -156.6265173518458,
              71.3248756045479,
              13.813553213635323
            ],
            [
              -156.62600674290996,
              71.32052822198492,
              13.813553213635323
            ],
            [
              -156.63952322387289,
              71.32034760282093,
              2.733553213635324
            ]
          ]
        ]
      },
      "bbox": [
        -156.6400365,
        71.3203476,
        2.733553214,
        -156.6260067,
        71.3248756,
        13.81355321
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:53Z",
        "pc:count": 3058130,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96503.61968,
            "count": 3058130,
            "maximum": -96254.83649,
            "minimum": -96750.79649,
            "name": "X",
            "position": 0,
            "stddev": 134.9274462,
            "variance": 18205.41575
          },
          {
            "average": 2371278.559,
            "count": 3058130,
            "maximum": 2371512.88,
            "minimum": 2371039.4,
            "name": "Y",
            "position": 1,
            "stddev": 128.8947388,
            "variance": 16613.85369
          },
          {
            "average": 4.182279988,
            "count": 3058130,
            "maximum": 13.81355321,
            "minimum": 2.733553214,
            "name": "Z",
            "position": 2,
            "stddev": 0.3884143761,
            "variance": 0.1508657276
          },
          {
            "average": 38710.46514,
            "count": 3058130,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11620.32668,
            "variance": 135031992.1
          },
          {
            "average": 1.000439157,
            "count": 3058130,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02106044894,
            "variance": 0.0004435425097
          },
          {
            "average": 1.000879623,
            "count": 3058130,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02987612682,
            "variance": 0.0008925829536
          },
          {
            "average": 0.5027748984,
            "count": 3058130,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999923816,
            "variance": 0.2499923817
          },
          {
            "average": 0.0004270583657,
            "count": 3058130,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02066098077,
            "variance": 0.0004268761265
          },
          {
            "average": 1.307392426,
            "count": 3058130,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4663009082,
            "variance": 0.217436537
          },
          {
            "average": 0.9716078714,
            "count": 3058130,
            "maximum": 16.30200005,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61846331,
            "variance": 112.751763
          },
          {
            "average": 0.5323890744,
            "count": 3058130,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989499266,
            "variance": 0.2489510293
          },
          {
            "average": 408.6771449,
            "count": 3058130,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9678576367,
            "variance": 0.9367484049
          },
          {
            "average": 220416561.6,
            "count": 3058130,
            "maximum": 220417333.5,
            "minimum": 220415576.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 555.9595924,
            "variance": 309091.0684
          },
          {
            "average": 0.5323890744,
            "count": 3058130,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989499266,
            "variance": 0.2489510293
          },
          {
            "average": 0,
            "count": 3058130,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3058130,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3058130,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2635192095,
            "count": 3058130,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4405415975,
            "variance": 0.1940768992
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96750.79649,
          2371039.4,
          2.733553214,
          -96254.83649,
          2371512.88,
          13.81355321
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96750.79648818365,
                2371039.4004182904,
                2.733553213635324
              ],
              [
                -96750.79648818365,
                2371512.880418291,
                2.733553213635324
              ],
              [
                -96254.83648818366,
                2371512.880418291,
                13.813553213635323
              ],
              [
                -96254.83648818366,
                2371039.4004182904,
                13.813553213635323
              ],
              [
                -96750.79648818365,
                2371039.4004182904,
                2.733553213635324
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:53+00:00",
        "end_time": "2018-09-08T04:19:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2289.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2289.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2289.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2289.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6400365,
            71.3203476,
            2.733553214,
            -156.6260067,
            71.3248756,
            13.81355321
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63952322387289,
                  71.32034760282093,
                  2.733553213635324
                ],
                [
                  -156.64003645547004,
                  71.32469494495012,
                  2.733553213635324
                ],
                [
                  -156.6265173518458,
                  71.3248756045479,
                  13.813553213635323
                ],
                [
                  -156.62600674290996,
                  71.32052822198492,
                  13.813553213635323
                ],
                [
                  -156.63952322387289,
                  71.32034760282093,
                  2.733553213635324
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2289.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2289.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:53Z",
            "pc:count": 3058130,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96503.61968,
                "count": 3058130,
                "maximum": -96254.83649,
                "minimum": -96750.79649,
                "name": "X",
                "position": 0,
                "stddev": 134.9274462,
                "variance": 18205.41575
              },
              {
                "average": 2371278.559,
                "count": 3058130,
                "maximum": 2371512.88,
                "minimum": 2371039.4,
                "name": "Y",
                "position": 1,
                "stddev": 128.8947388,
                "variance": 16613.85369
              },
              {
                "average": 4.182279988,
                "count": 3058130,
                "maximum": 13.81355321,
                "minimum": 2.733553214,
                "name": "Z",
                "position": 2,
                "stddev": 0.3884143761,
                "variance": 0.1508657276
              },
              {
                "average": 38710.46514,
                "count": 3058130,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11620.32668,
                "variance": 135031992.1
              },
              {
                "average": 1.000439157,
                "count": 3058130,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02106044894,
                "variance": 0.0004435425097
              },
              {
                "average": 1.000879623,
                "count": 3058130,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02987612682,
                "variance": 0.0008925829536
              },
              {
                "average": 0.5027748984,
                "count": 3058130,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999923816,
                "variance": 0.2499923817
              },
              {
                "average": 0.0004270583657,
                "count": 3058130,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02066098077,
                "variance": 0.0004268761265
              },
              {
                "average": 1.307392426,
                "count": 3058130,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4663009082,
                "variance": 0.217436537
              },
              {
                "average": 0.9716078714,
                "count": 3058130,
                "maximum": 16.30200005,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61846331,
                "variance": 112.751763
              },
              {
                "average": 0.5323890744,
                "count": 3058130,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989499266,
                "variance": 0.2489510293
              },
              {
                "average": 408.6771449,
                "count": 3058130,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9678576367,
                "variance": 0.9367484049
              },
              {
                "average": 220416561.6,
                "count": 3058130,
                "maximum": 220417333.5,
                "minimum": 220415576.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 555.9595924,
                "variance": 309091.0684
              },
              {
                "average": 0.5323890744,
                "count": 3058130,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989499266,
                "variance": 0.2489510293
              },
              {
                "average": 0,
                "count": 3058130,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3058130,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3058130,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2635192095,
                "count": 3058130,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4405415975,
                "variance": 0.1940768992
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96750.79649,
              2371039.4,
              2.733553214,
              -96254.83649,
              2371512.88,
              13.81355321
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96750.79648818365,
                    2371039.4004182904,
                    2.733553213635324
                  ],
                  [
                    -96750.79648818365,
                    2371512.880418291,
                    2.733553213635324
                  ],
                  [
                    -96254.83648818366,
                    2371512.880418291,
                    13.813553213635323
                  ],
                  [
                    -96254.83648818366,
                    2371039.4004182904,
                    13.813553213635323
                  ],
                  [
                    -96750.79648818365,
                    2371039.4004182904,
                    2.733553213635324
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:53+00:00",
            "end_time": "2018-09-08T04:19:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2388.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.3950716632766,
              71.3592532023654,
              0.942621524764025
            ],
            [
              -156.39511741388,
              71.35967976655222,
              0.942621524764025
            ],
            [
              -156.39331912162072,
              71.35970158512563,
              1.342621524764025
            ],
            [
              -156.3932734053081,
              71.3592750204586,
              1.342621524764025
            ],
            [
              -156.3950716632766,
              71.3592532023654,
              0.942621524764025
            ]
          ]
        ]
      },
      "bbox": [
        -156.3951174,
        71.3592532,
        0.9426215248,
        -156.3932734,
        71.35970159,
        1.342621525
      ],
      "properties": {
        "datetime": "2018-09-08T05:49:06Z",
        "pc:count": 11131,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87599.13169,
            "count": 11131,
            "maximum": -87576.08986,
            "minimum": -87641.94986,
            "name": "X",
            "position": 0,
            "stddev": 15.36805026,
            "variance": 236.1769688
          },
          {
            "average": 2374959.945,
            "count": 11131,
            "maximum": 2374976.904,
            "minimum": 2374930.464,
            "name": "Y",
            "position": 1,
            "stddev": 10.70256044,
            "variance": 114.5448
          },
          {
            "average": 1.13930556,
            "count": 11131,
            "maximum": 1.342621525,
            "minimum": 0.9426215248,
            "name": "Z",
            "position": 2,
            "stddev": 0.04942191219,
            "variance": 0.002442525405
          },
          {
            "average": 21482.16791,
            "count": 11131,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 15405.34846,
            "variance": 237324761
          },
          {
            "average": 1,
            "count": 11131,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 11131,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5024705777,
            "count": 11131,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000163572,
            "variance": 0.2500163575
          },
          {
            "average": 0,
            "count": 11131,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 8.394124517,
            "count": 11131,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.456465455,
            "variance": 2.121291621
          },
          {
            "average": -0.8229055762,
            "count": 11131,
            "maximum": 14.76000023,
            "minimum": -13.85400009,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.031871626,
            "variance": 49.44721856
          },
          {
            "average": 0.4834246698,
            "count": 11131,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997476319,
            "variance": 0.2497476956
          },
          {
            "average": 416.0612703,
            "count": 11131,
            "maximum": 417,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.579076133,
            "variance": 0.3353291678
          },
          {
            "average": 220420679.2,
            "count": 11131,
            "maximum": 220420946.9,
            "minimum": 220419859.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 336.2232923,
            "variance": 113046.1023
          },
          {
            "average": 0.4834246698,
            "count": 11131,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997476319,
            "variance": 0.2497476956
          },
          {
            "average": 0,
            "count": 11131,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 11131,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 11131,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 11131,
            "maximum": 0,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0,
            "variance": 0
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87641.94986,
          2374930.464,
          0.9426215248,
          -87576.08986,
          2374976.904,
          1.342621525
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87641.94986060378,
                2374930.464100765,
                0.942621524764025
              ],
              [
                -87641.94986060378,
                2374976.9041007655,
                0.942621524764025
              ],
              [
                -87576.0898606038,
                2374976.9041007655,
                1.342621524764025
              ],
              [
                -87576.0898606038,
                2374930.464100765,
                1.342621524764025
              ],
              [
                -87641.94986060378,
                2374930.464100765,
                0.942621524764025
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:49:06+00:00",
        "end_time": "2018-09-08T05:30:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2388.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2388.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2388.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2388.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3951174,
            71.3592532,
            0.9426215248,
            -156.3932734,
            71.35970159,
            1.342621525
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.3950716632766,
                  71.3592532023654,
                  0.942621524764025
                ],
                [
                  -156.39511741388,
                  71.35967976655222,
                  0.942621524764025
                ],
                [
                  -156.39331912162072,
                  71.35970158512563,
                  1.342621524764025
                ],
                [
                  -156.3932734053081,
                  71.3592750204586,
                  1.342621524764025
                ],
                [
                  -156.3950716632766,
                  71.3592532023654,
                  0.942621524764025
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2388.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2388.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:49:06Z",
            "pc:count": 11131,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87599.13169,
                "count": 11131,
                "maximum": -87576.08986,
                "minimum": -87641.94986,
                "name": "X",
                "position": 0,
                "stddev": 15.36805026,
                "variance": 236.1769688
              },
              {
                "average": 2374959.945,
                "count": 11131,
                "maximum": 2374976.904,
                "minimum": 2374930.464,
                "name": "Y",
                "position": 1,
                "stddev": 10.70256044,
                "variance": 114.5448
              },
              {
                "average": 1.13930556,
                "count": 11131,
                "maximum": 1.342621525,
                "minimum": 0.9426215248,
                "name": "Z",
                "position": 2,
                "stddev": 0.04942191219,
                "variance": 0.002442525405
              },
              {
                "average": 21482.16791,
                "count": 11131,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 15405.34846,
                "variance": 237324761
              },
              {
                "average": 1,
                "count": 11131,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 11131,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5024705777,
                "count": 11131,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000163572,
                "variance": 0.2500163575
              },
              {
                "average": 0,
                "count": 11131,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 8.394124517,
                "count": 11131,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.456465455,
                "variance": 2.121291621
              },
              {
                "average": -0.8229055762,
                "count": 11131,
                "maximum": 14.76000023,
                "minimum": -13.85400009,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.031871626,
                "variance": 49.44721856
              },
              {
                "average": 0.4834246698,
                "count": 11131,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997476319,
                "variance": 0.2497476956
              },
              {
                "average": 416.0612703,
                "count": 11131,
                "maximum": 417,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.579076133,
                "variance": 0.3353291678
              },
              {
                "average": 220420679.2,
                "count": 11131,
                "maximum": 220420946.9,
                "minimum": 220419859.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 336.2232923,
                "variance": 113046.1023
              },
              {
                "average": 0.4834246698,
                "count": 11131,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997476319,
                "variance": 0.2497476956
              },
              {
                "average": 0,
                "count": 11131,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 11131,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 11131,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 11131,
                "maximum": 0,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0,
                "variance": 0
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87641.94986,
              2374930.464,
              0.9426215248,
              -87576.08986,
              2374976.904,
              1.342621525
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87641.94986060378,
                    2374930.464100765,
                    0.942621524764025
                  ],
                  [
                    -87641.94986060378,
                    2374976.9041007655,
                    0.942621524764025
                  ],
                  [
                    -87576.0898606038,
                    2374976.9041007655,
                    1.342621524764025
                  ],
                  [
                    -87576.0898606038,
                    2374930.464100765,
                    1.342621524764025
                  ],
                  [
                    -87641.94986060378,
                    2374930.464100765,
                    0.942621524764025
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:49:06+00:00",
            "end_time": "2018-09-08T05:30:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2368.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.54791036131064,
              71.34845584785616,
              0.813790280568767
            ],
            [
              -156.54839519956536,
              71.35270598684248,
              0.813790280568767
            ],
            [
              -156.53485569253098,
              71.35288043011968,
              26.87379028056877
            ],
            [
              -156.53437342518205,
              71.34863025290173,
              26.87379028056877
            ],
            [
              -156.54791036131064,
              71.34845584785616,
              0.813790280568767
            ]
          ]
        ]
      },
      "bbox": [
        -156.5483952,
        71.34845585,
        0.8137902806,
        -156.5343734,
        71.35288043,
        26.87379028
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:11Z",
        "pc:count": 1634219,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93039.74742,
            "count": 1634219,
            "maximum": -92781.05702,
            "minimum": -93277.11702,
            "name": "X",
            "position": 0,
            "stddev": 130.8376546,
            "variance": 17118.49186
          },
          {
            "average": 2374199.045,
            "count": 1634219,
            "maximum": 2374427.453,
            "minimum": 2373964.673,
            "name": "Y",
            "position": 1,
            "stddev": 124.4383342,
            "variance": 15484.89901
          },
          {
            "average": 1.101397817,
            "count": 1634219,
            "maximum": 26.87379028,
            "minimum": 0.8137902806,
            "name": "Z",
            "position": 2,
            "stddev": 0.08594091331,
            "variance": 0.00738584058
          },
          {
            "average": 15034.8311,
            "count": 1634219,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11628.28335,
            "variance": 135216973.7
          },
          {
            "average": 1.000005507,
            "count": 1634219,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002346740476,
            "variance": 5.507190861e-06
          },
          {
            "average": 1.000011014,
            "count": 1634219,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00331878307,
            "variance": 1.101432106e-05
          },
          {
            "average": 0.5071829418,
            "count": 1634219,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999485556,
            "variance": 0.2499485583
          },
          {
            "average": 0.0006675971825,
            "count": 1634219,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02582928386,
            "variance": 0.0006671519047
          },
          {
            "average": 7.523166112,
            "count": 1634219,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.616625258,
            "variance": 6.846727741
          },
          {
            "average": -1.907900727,
            "count": 1634219,
            "maximum": 16.32600021,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.510423405,
            "variance": 56.40645973
          },
          {
            "average": 0.4788544253,
            "count": 1634219,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995528174,
            "variance": 0.2495530174
          },
          {
            "average": 408.3664307,
            "count": 1634219,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7443365365,
            "variance": 0.5540368796
          },
          {
            "average": 220416374.7,
            "count": 1634219,
            "maximum": 220417411.4,
            "minimum": 220415496.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 412.308571,
            "variance": 169998.3577
          },
          {
            "average": 0.4788544253,
            "count": 1634219,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995528174,
            "variance": 0.2495530174
          },
          {
            "average": 0,
            "count": 1634219,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1634219,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1634219,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07095315866,
            "count": 1634219,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2567466617,
            "variance": 0.06591884828
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93277.11702,
          2373964.673,
          0.8137902806,
          -92781.05702,
          2374427.453,
          26.87379028
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93277.11702035909,
                2373964.673261228,
                0.813790280568767
              ],
              [
                -93277.11702035909,
                2374427.4532612283,
                0.813790280568767
              ],
              [
                -92781.05702035909,
                2374427.4532612283,
                26.87379028056877
              ],
              [
                -92781.05702035909,
                2373964.673261228,
                26.87379028056877
              ],
              [
                -93277.11702035909,
                2373964.673261228,
                0.813790280568767
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:11+00:00",
        "end_time": "2018-09-08T04:18:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2368.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2368.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2368.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2368.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5483952,
            71.34845585,
            0.8137902806,
            -156.5343734,
            71.35288043,
            26.87379028
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.54791036131064,
                  71.34845584785616,
                  0.813790280568767
                ],
                [
                  -156.54839519956536,
                  71.35270598684248,
                  0.813790280568767
                ],
                [
                  -156.53485569253098,
                  71.35288043011968,
                  26.87379028056877
                ],
                [
                  -156.53437342518205,
                  71.34863025290173,
                  26.87379028056877
                ],
                [
                  -156.54791036131064,
                  71.34845584785616,
                  0.813790280568767
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2368.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2368.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:11Z",
            "pc:count": 1634219,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93039.74742,
                "count": 1634219,
                "maximum": -92781.05702,
                "minimum": -93277.11702,
                "name": "X",
                "position": 0,
                "stddev": 130.8376546,
                "variance": 17118.49186
              },
              {
                "average": 2374199.045,
                "count": 1634219,
                "maximum": 2374427.453,
                "minimum": 2373964.673,
                "name": "Y",
                "position": 1,
                "stddev": 124.4383342,
                "variance": 15484.89901
              },
              {
                "average": 1.101397817,
                "count": 1634219,
                "maximum": 26.87379028,
                "minimum": 0.8137902806,
                "name": "Z",
                "position": 2,
                "stddev": 0.08594091331,
                "variance": 0.00738584058
              },
              {
                "average": 15034.8311,
                "count": 1634219,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11628.28335,
                "variance": 135216973.7
              },
              {
                "average": 1.000005507,
                "count": 1634219,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002346740476,
                "variance": 5.507190861e-06
              },
              {
                "average": 1.000011014,
                "count": 1634219,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00331878307,
                "variance": 1.101432106e-05
              },
              {
                "average": 0.5071829418,
                "count": 1634219,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999485556,
                "variance": 0.2499485583
              },
              {
                "average": 0.0006675971825,
                "count": 1634219,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02582928386,
                "variance": 0.0006671519047
              },
              {
                "average": 7.523166112,
                "count": 1634219,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.616625258,
                "variance": 6.846727741
              },
              {
                "average": -1.907900727,
                "count": 1634219,
                "maximum": 16.32600021,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.510423405,
                "variance": 56.40645973
              },
              {
                "average": 0.4788544253,
                "count": 1634219,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995528174,
                "variance": 0.2495530174
              },
              {
                "average": 408.3664307,
                "count": 1634219,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7443365365,
                "variance": 0.5540368796
              },
              {
                "average": 220416374.7,
                "count": 1634219,
                "maximum": 220417411.4,
                "minimum": 220415496.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 412.308571,
                "variance": 169998.3577
              },
              {
                "average": 0.4788544253,
                "count": 1634219,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995528174,
                "variance": 0.2495530174
              },
              {
                "average": 0,
                "count": 1634219,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1634219,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1634219,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07095315866,
                "count": 1634219,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2567466617,
                "variance": 0.06591884828
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93277.11702,
              2373964.673,
              0.8137902806,
              -92781.05702,
              2374427.453,
              26.87379028
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93277.11702035909,
                    2373964.673261228,
                    0.813790280568767
                  ],
                  [
                    -93277.11702035909,
                    2374427.4532612283,
                    0.813790280568767
                  ],
                  [
                    -92781.05702035909,
                    2374427.4532612283,
                    26.87379028056877
                  ],
                  [
                    -92781.05702035909,
                    2373964.673261228,
                    26.87379028056877
                  ],
                  [
                    -93277.11702035909,
                    2373964.673261228,
                    0.813790280568767
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:11+00:00",
            "end_time": "2018-09-08T04:18:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2317.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6261617067115,
              71.328448340127,
              0.935966165119146
            ],
            [
              -156.62667252661905,
              71.33279595624512,
              0.935966165119146
            ],
            [
              -156.61314460056175,
              71.33297575980458,
              12.815966165119146
            ],
            [
              -156.6126364060404,
              71.32862810342286,
              12.815966165119146
            ],
            [
              -156.6261617067115,
              71.328448340127,
              0.935966165119146
            ]
          ]
        ]
      },
      "bbox": [
        -156.6266725,
        71.32844834,
        0.9359661651,
        -156.6126364,
        71.33297576,
        12.81596617
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:05Z",
        "pc:count": 1555199,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95991.67906,
            "count": 1555199,
            "maximum": -95730.33923,
            "minimum": -96226.43923,
            "name": "X",
            "position": 0,
            "stddev": 133.9466628,
            "variance": 17941.70848
          },
          {
            "average": 2372150.685,
            "count": 1555199,
            "maximum": 2372374.338,
            "minimum": 2371900.858,
            "name": "Y",
            "position": 1,
            "stddev": 123.9712374,
            "variance": 15368.86771
          },
          {
            "average": 1.109959455,
            "count": 1555199,
            "maximum": 12.81596617,
            "minimum": 0.9359661651,
            "name": "Z",
            "position": 2,
            "stddev": 0.03186846505,
            "variance": 0.001015599065
          },
          {
            "average": 19493.18166,
            "count": 1555199,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13277.82793,
            "variance": 176300714.6
          },
          {
            "average": 1,
            "count": 1555199,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1555199,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4905352948,
            "count": 1555199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999105721,
            "variance": 0.24991058
          },
          {
            "average": 0.0006140693249,
            "count": 1555199,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02477282056,
            "variance": 0.0006136926384
          },
          {
            "average": 8.52087675,
            "count": 1555199,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.182566025,
            "variance": 1.398462404
          },
          {
            "average": 4.024406912,
            "count": 1555199,
            "maximum": 16.29000092,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.130169719,
            "variance": 26.31864134
          },
          {
            "average": 0.4889490027,
            "count": 1555199,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998780213,
            "variance": 0.2498780361
          },
          {
            "average": 407.6147458,
            "count": 1555199,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5449258991,
            "variance": 0.2969442356
          },
          {
            "average": 220415958.2,
            "count": 1555199,
            "maximum": 220417345.2,
            "minimum": 220415081.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 339.7404897,
            "variance": 115423.6004
          },
          {
            "average": 0.4889490027,
            "count": 1555199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998780213,
            "variance": 0.2498780361
          },
          {
            "average": 0,
            "count": 1555199,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1555199,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1555199,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0135873287,
            "count": 1555199,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1157701249,
            "variance": 0.01340272181
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96226.43923,
          2371900.858,
          0.9359661651,
          -95730.33923,
          2372374.338,
          12.81596617
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96226.43922669221,
                2371900.858393479,
                0.935966165119146
              ],
              [
                -96226.43922669221,
                2372374.3383934796,
                0.935966165119146
              ],
              [
                -95730.3392266922,
                2372374.3383934796,
                12.815966165119146
              ],
              [
                -95730.3392266922,
                2371900.858393479,
                12.815966165119146
              ],
              [
                -96226.43922669221,
                2371900.858393479,
                0.935966165119146
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:05+00:00",
        "end_time": "2018-09-08T04:11:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2317.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2317.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2317.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2317.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6266725,
            71.32844834,
            0.9359661651,
            -156.6126364,
            71.33297576,
            12.81596617
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6261617067115,
                  71.328448340127,
                  0.935966165119146
                ],
                [
                  -156.62667252661905,
                  71.33279595624512,
                  0.935966165119146
                ],
                [
                  -156.61314460056175,
                  71.33297575980458,
                  12.815966165119146
                ],
                [
                  -156.6126364060404,
                  71.32862810342286,
                  12.815966165119146
                ],
                [
                  -156.6261617067115,
                  71.328448340127,
                  0.935966165119146
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2317.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2317.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:05Z",
            "pc:count": 1555199,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95991.67906,
                "count": 1555199,
                "maximum": -95730.33923,
                "minimum": -96226.43923,
                "name": "X",
                "position": 0,
                "stddev": 133.9466628,
                "variance": 17941.70848
              },
              {
                "average": 2372150.685,
                "count": 1555199,
                "maximum": 2372374.338,
                "minimum": 2371900.858,
                "name": "Y",
                "position": 1,
                "stddev": 123.9712374,
                "variance": 15368.86771
              },
              {
                "average": 1.109959455,
                "count": 1555199,
                "maximum": 12.81596617,
                "minimum": 0.9359661651,
                "name": "Z",
                "position": 2,
                "stddev": 0.03186846505,
                "variance": 0.001015599065
              },
              {
                "average": 19493.18166,
                "count": 1555199,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13277.82793,
                "variance": 176300714.6
              },
              {
                "average": 1,
                "count": 1555199,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1555199,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4905352948,
                "count": 1555199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999105721,
                "variance": 0.24991058
              },
              {
                "average": 0.0006140693249,
                "count": 1555199,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02477282056,
                "variance": 0.0006136926384
              },
              {
                "average": 8.52087675,
                "count": 1555199,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.182566025,
                "variance": 1.398462404
              },
              {
                "average": 4.024406912,
                "count": 1555199,
                "maximum": 16.29000092,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.130169719,
                "variance": 26.31864134
              },
              {
                "average": 0.4889490027,
                "count": 1555199,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998780213,
                "variance": 0.2498780361
              },
              {
                "average": 407.6147458,
                "count": 1555199,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5449258991,
                "variance": 0.2969442356
              },
              {
                "average": 220415958.2,
                "count": 1555199,
                "maximum": 220417345.2,
                "minimum": 220415081.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 339.7404897,
                "variance": 115423.6004
              },
              {
                "average": 0.4889490027,
                "count": 1555199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998780213,
                "variance": 0.2498780361
              },
              {
                "average": 0,
                "count": 1555199,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1555199,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1555199,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0135873287,
                "count": 1555199,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1157701249,
                "variance": 0.01340272181
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96226.43923,
              2371900.858,
              0.9359661651,
              -95730.33923,
              2372374.338,
              12.81596617
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96226.43922669221,
                    2371900.858393479,
                    0.935966165119146
                  ],
                  [
                    -96226.43922669221,
                    2372374.3383934796,
                    0.935966165119146
                  ],
                  [
                    -95730.3392266922,
                    2372374.3383934796,
                    12.815966165119146
                  ],
                  [
                    -95730.3392266922,
                    2371900.858393479,
                    12.815966165119146
                  ],
                  [
                    -96226.43922669221,
                    2371900.858393479,
                    0.935966165119146
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:05+00:00",
            "end_time": "2018-09-08T04:11:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2389.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.39313470897295,
              71.35735412107677,
              0.923588499017736
            ],
            [
              -156.39338227502284,
              71.35966420501092,
              0.923588499017736
            ],
            [
              -156.38053966874264,
              71.35981955056964,
              1.383588499017736
            ],
            [
              -156.38029342882047,
              71.35750944812101,
              1.383588499017736
            ],
            [
              -156.39313470897295,
              71.35735412107677,
              0.923588499017736
            ]
          ]
        ]
      },
      "bbox": [
        -156.3933823,
        71.35735412,
        0.923588499,
        -156.3802934,
        71.35981955,
        1.383588499
      ],
      "properties": {
        "datetime": "2018-09-08T06:04:32Z",
        "pc:count": 549633,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87307.50517,
            "count": 549633,
            "maximum": -87108.2063,
            "minimum": -87578.5463,
            "name": "X",
            "position": 0,
            "stddev": 123.1291385,
            "variance": 15160.78475
          },
          {
            "average": 2374875.393,
            "count": 549633,
            "maximum": 2374972.923,
            "minimum": 2374721.423,
            "name": "Y",
            "position": 1,
            "stddev": 57.12384883,
            "variance": 3263.134106
          },
          {
            "average": 1.142261595,
            "count": 549633,
            "maximum": 1.383588499,
            "minimum": 0.923588499,
            "name": "Z",
            "position": 2,
            "stddev": 0.04535203475,
            "variance": 0.002056807056
          },
          {
            "average": 21970.45136,
            "count": 549633,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16267.27925,
            "variance": 264624374.1
          },
          {
            "average": 1,
            "count": 549633,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 549633,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5077497166,
            "count": 549633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999403931,
            "variance": 0.2499403966
          },
          {
            "average": 0.0007368553198,
            "count": 549633,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02713510095,
            "variance": 0.0007363137037
          },
          {
            "average": 8.262991851,
            "count": 549633,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.730731905,
            "variance": 2.995432928
          },
          {
            "average": -2.120660386,
            "count": 549633,
            "maximum": 16.4640007,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.272735538,
            "variance": 39.34721114
          },
          {
            "average": 0.4854857696,
            "count": 549633,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997897474,
            "variance": 0.2497897916
          },
          {
            "average": 416.7887063,
            "count": 549633,
            "maximum": 418,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6284453467,
            "variance": 0.3949435538
          },
          {
            "average": 220420972.7,
            "count": 549633,
            "maximum": 220421872.9,
            "minimum": 220419857.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 331.4000787,
            "variance": 109826.0121
          },
          {
            "average": 0.4854857696,
            "count": 549633,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997897474,
            "variance": 0.2497897916
          },
          {
            "average": 0,
            "count": 549633,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 549633,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 549633,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02920312281,
            "count": 549633,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1683756277,
            "variance": 0.02835035201
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87578.5463,
          2374721.423,
          0.923588499,
          -87108.2063,
          2374972.923,
          1.383588499
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87578.54629847633,
                2374721.42310585,
                0.923588499017736
              ],
              [
                -87578.54629847633,
                2374972.92310585,
                0.923588499017736
              ],
              [
                -87108.20629847633,
                2374972.92310585,
                1.383588499017736
              ],
              [
                -87108.20629847633,
                2374721.42310585,
                1.383588499017736
              ],
              [
                -87578.54629847633,
                2374721.42310585,
                0.923588499017736
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:04:32+00:00",
        "end_time": "2018-09-08T05:30:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2389.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2389.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2389.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2389.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3933823,
            71.35735412,
            0.923588499,
            -156.3802934,
            71.35981955,
            1.383588499
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.39313470897295,
                  71.35735412107677,
                  0.923588499017736
                ],
                [
                  -156.39338227502284,
                  71.35966420501092,
                  0.923588499017736
                ],
                [
                  -156.38053966874264,
                  71.35981955056964,
                  1.383588499017736
                ],
                [
                  -156.38029342882047,
                  71.35750944812101,
                  1.383588499017736
                ],
                [
                  -156.39313470897295,
                  71.35735412107677,
                  0.923588499017736
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2389.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2389.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:04:32Z",
            "pc:count": 549633,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87307.50517,
                "count": 549633,
                "maximum": -87108.2063,
                "minimum": -87578.5463,
                "name": "X",
                "position": 0,
                "stddev": 123.1291385,
                "variance": 15160.78475
              },
              {
                "average": 2374875.393,
                "count": 549633,
                "maximum": 2374972.923,
                "minimum": 2374721.423,
                "name": "Y",
                "position": 1,
                "stddev": 57.12384883,
                "variance": 3263.134106
              },
              {
                "average": 1.142261595,
                "count": 549633,
                "maximum": 1.383588499,
                "minimum": 0.923588499,
                "name": "Z",
                "position": 2,
                "stddev": 0.04535203475,
                "variance": 0.002056807056
              },
              {
                "average": 21970.45136,
                "count": 549633,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16267.27925,
                "variance": 264624374.1
              },
              {
                "average": 1,
                "count": 549633,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 549633,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5077497166,
                "count": 549633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999403931,
                "variance": 0.2499403966
              },
              {
                "average": 0.0007368553198,
                "count": 549633,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02713510095,
                "variance": 0.0007363137037
              },
              {
                "average": 8.262991851,
                "count": 549633,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.730731905,
                "variance": 2.995432928
              },
              {
                "average": -2.120660386,
                "count": 549633,
                "maximum": 16.4640007,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.272735538,
                "variance": 39.34721114
              },
              {
                "average": 0.4854857696,
                "count": 549633,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997897474,
                "variance": 0.2497897916
              },
              {
                "average": 416.7887063,
                "count": 549633,
                "maximum": 418,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6284453467,
                "variance": 0.3949435538
              },
              {
                "average": 220420972.7,
                "count": 549633,
                "maximum": 220421872.9,
                "minimum": 220419857.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 331.4000787,
                "variance": 109826.0121
              },
              {
                "average": 0.4854857696,
                "count": 549633,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997897474,
                "variance": 0.2497897916
              },
              {
                "average": 0,
                "count": 549633,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 549633,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 549633,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02920312281,
                "count": 549633,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1683756277,
                "variance": 0.02835035201
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87578.5463,
              2374721.423,
              0.923588499,
              -87108.2063,
              2374972.923,
              1.383588499
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87578.54629847633,
                    2374721.42310585,
                    0.923588499017736
                  ],
                  [
                    -87578.54629847633,
                    2374972.92310585,
                    0.923588499017736
                  ],
                  [
                    -87108.20629847633,
                    2374972.92310585,
                    1.383588499017736
                  ],
                  [
                    -87108.20629847633,
                    2374721.42310585,
                    1.383588499017736
                  ],
                  [
                    -87578.54629847633,
                    2374721.42310585,
                    0.923588499017736
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:04:32+00:00",
            "end_time": "2018-09-08T05:30:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2218.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70453632626933,
              71.30441071497626,
              -2.768561294044757
            ],
            [
              -156.70506188437682,
              71.30875796694411,
              -2.768561294044757
            ],
            [
              -156.69156056234118,
              71.30894296138116,
              23.391438705955245
            ],
            [
              -156.69103762160356,
              71.30459566804832,
              23.391438705955245
            ],
            [
              -156.70453632626933,
              71.30441071497626,
              -2.768561294044757
            ]
          ]
        ]
      },
      "bbox": [
        -156.7050619,
        71.30441071,
        -2.768561294,
        -156.6910376,
        71.30894296,
        23.39143871
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:59Z",
        "pc:count": 2511944,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99002.81471,
            "count": 2511944,
            "maximum": -98707.46279,
            "minimum": -99203.14279,
            "name": "X",
            "position": 0,
            "stddev": 122.4691877,
            "variance": 14998.70193
          },
          {
            "average": 2369629.989,
            "count": 2511944,
            "maximum": 2369875.784,
            "minimum": 2369402.244,
            "name": "Y",
            "position": 1,
            "stddev": 129.1503289,
            "variance": 16679.80746
          },
          {
            "average": 4.102687655,
            "count": 2511944,
            "maximum": 23.39143871,
            "minimum": -2.768561294,
            "name": "Z",
            "position": 2,
            "stddev": 1.861841875,
            "variance": 3.466455168
          },
          {
            "average": 35945.61842,
            "count": 2511944,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13677.89291,
            "variance": 187084754.5
          },
          {
            "average": 1.005126309,
            "count": 2511944,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07209138299,
            "variance": 0.005197167501
          },
          {
            "average": 1.010255404,
            "count": 2511944,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1021882508,
            "variance": 0.0104424386
          },
          {
            "average": 0.4994179807,
            "count": 2511944,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997608,
            "variance": 0.2499997608
          },
          {
            "average": 0.000493641578,
            "count": 2511944,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02221256609,
            "variance": 0.0004933980924
          },
          {
            "average": 2.711844691,
            "count": 2511944,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.957973898,
            "variance": 8.749609582
          },
          {
            "average": 0.2990597607,
            "count": 2511944,
            "maximum": 16.35000038,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.770797519,
            "variance": 95.46848416
          },
          {
            "average": 0.4763589475,
            "count": 2511944,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994408873,
            "variance": 0.2494411999
          },
          {
            "average": 407.9023505,
            "count": 2511944,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8651635984,
            "variance": 0.7485080519
          },
          {
            "average": 220416124.1,
            "count": 2511944,
            "maximum": 220417279.5,
            "minimum": 220415015.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 495.7283603,
            "variance": 245746.6072
          },
          {
            "average": 0.4763589475,
            "count": 2511944,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994408873,
            "variance": 0.2494411999
          },
          {
            "average": 0,
            "count": 2511944,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2511944,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2511944,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1911348342,
            "count": 2511944,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.39319508,
            "variance": 0.1546023709
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99203.14279,
          2369402.244,
          -2.768561294,
          -98707.46279,
          2369875.784,
          23.39143871
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99203.14279301337,
                2369402.2435757294,
                -2.768561294044757
              ],
              [
                -99203.14279301337,
                2369875.7835757295,
                -2.768561294044757
              ],
              [
                -98707.46279301337,
                2369875.7835757295,
                23.391438705955245
              ],
              [
                -98707.46279301337,
                2369402.2435757294,
                23.391438705955245
              ],
              [
                -99203.14279301337,
                2369402.2435757294,
                -2.768561294044757
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:59+00:00",
        "end_time": "2018-09-08T04:10:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2218.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2218.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2218.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2218.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7050619,
            71.30441071,
            -2.768561294,
            -156.6910376,
            71.30894296,
            23.39143871
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70453632626933,
                  71.30441071497626,
                  -2.768561294044757
                ],
                [
                  -156.70506188437682,
                  71.30875796694411,
                  -2.768561294044757
                ],
                [
                  -156.69156056234118,
                  71.30894296138116,
                  23.391438705955245
                ],
                [
                  -156.69103762160356,
                  71.30459566804832,
                  23.391438705955245
                ],
                [
                  -156.70453632626933,
                  71.30441071497626,
                  -2.768561294044757
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2218.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2218.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:59Z",
            "pc:count": 2511944,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99002.81471,
                "count": 2511944,
                "maximum": -98707.46279,
                "minimum": -99203.14279,
                "name": "X",
                "position": 0,
                "stddev": 122.4691877,
                "variance": 14998.70193
              },
              {
                "average": 2369629.989,
                "count": 2511944,
                "maximum": 2369875.784,
                "minimum": 2369402.244,
                "name": "Y",
                "position": 1,
                "stddev": 129.1503289,
                "variance": 16679.80746
              },
              {
                "average": 4.102687655,
                "count": 2511944,
                "maximum": 23.39143871,
                "minimum": -2.768561294,
                "name": "Z",
                "position": 2,
                "stddev": 1.861841875,
                "variance": 3.466455168
              },
              {
                "average": 35945.61842,
                "count": 2511944,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13677.89291,
                "variance": 187084754.5
              },
              {
                "average": 1.005126309,
                "count": 2511944,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07209138299,
                "variance": 0.005197167501
              },
              {
                "average": 1.010255404,
                "count": 2511944,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1021882508,
                "variance": 0.0104424386
              },
              {
                "average": 0.4994179807,
                "count": 2511944,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997608,
                "variance": 0.2499997608
              },
              {
                "average": 0.000493641578,
                "count": 2511944,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02221256609,
                "variance": 0.0004933980924
              },
              {
                "average": 2.711844691,
                "count": 2511944,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.957973898,
                "variance": 8.749609582
              },
              {
                "average": 0.2990597607,
                "count": 2511944,
                "maximum": 16.35000038,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.770797519,
                "variance": 95.46848416
              },
              {
                "average": 0.4763589475,
                "count": 2511944,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994408873,
                "variance": 0.2494411999
              },
              {
                "average": 407.9023505,
                "count": 2511944,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8651635984,
                "variance": 0.7485080519
              },
              {
                "average": 220416124.1,
                "count": 2511944,
                "maximum": 220417279.5,
                "minimum": 220415015.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 495.7283603,
                "variance": 245746.6072
              },
              {
                "average": 0.4763589475,
                "count": 2511944,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994408873,
                "variance": 0.2494411999
              },
              {
                "average": 0,
                "count": 2511944,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2511944,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2511944,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1911348342,
                "count": 2511944,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.39319508,
                "variance": 0.1546023709
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99203.14279,
              2369402.244,
              -2.768561294,
              -98707.46279,
              2369875.784,
              23.39143871
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99203.14279301337,
                    2369402.2435757294,
                    -2.768561294044757
                  ],
                  [
                    -99203.14279301337,
                    2369875.7835757295,
                    -2.768561294044757
                  ],
                  [
                    -98707.46279301337,
                    2369875.7835757295,
                    23.391438705955245
                  ],
                  [
                    -98707.46279301337,
                    2369402.2435757294,
                    23.391438705955245
                  ],
                  [
                    -99203.14279301337,
                    2369402.2435757294,
                    -2.768561294044757
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:59+00:00",
            "end_time": "2018-09-08T04:10:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2390.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.3804932420293,
              71.35583343950923,
              0.905143891049082
            ],
            [
              -156.38088950627971,
              71.35955070435519,
              0.905143891049082
            ],
            [
              -156.36772959264604,
              71.35970904434025,
              1.825143891049082
            ],
            [
              -156.3673355149481,
              71.35599174912998,
              1.825143891049082
            ],
            [
              -156.3804932420293,
              71.35583343950923,
              0.905143891049082
            ]
          ]
        ]
      },
      "bbox": [
        -156.3808895,
        71.35583344,
        0.905143891,
        -156.3673355,
        71.35970904,
        1.825143891
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:07Z",
        "pc:count": 1091377,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86865.20435,
            "count": 1091377,
            "maximum": -86640.09041,
            "minimum": -87122.05041,
            "name": "X",
            "position": 0,
            "stddev": 131.8057148,
            "variance": 17372.74645
          },
          {
            "average": 2374774.533,
            "count": 1091377,
            "maximum": 2374944.151,
            "minimum": 2374539.451,
            "name": "Y",
            "position": 1,
            "stddev": 93.14234324,
            "variance": 8675.496104
          },
          {
            "average": 1.151772563,
            "count": 1091377,
            "maximum": 1.825143891,
            "minimum": 0.905143891,
            "name": "Z",
            "position": 2,
            "stddev": 0.05197609,
            "variance": 0.002701513932
          },
          {
            "average": 21023.84229,
            "count": 1091377,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14813.62613,
            "variance": 219443519.1
          },
          {
            "average": 1,
            "count": 1091377,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1091377,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4920811049,
            "count": 1091377,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999375162,
            "variance": 0.2499375201
          },
          {
            "average": 0.0006029080693,
            "count": 1091377,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02454679456,
            "variance": 0.0006025451233
          },
          {
            "average": 8.299302624,
            "count": 1091377,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.618647372,
            "variance": 2.620019314
          },
          {
            "average": 3.240856247,
            "count": 1091377,
            "maximum": 16.25399971,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.718328913,
            "variance": 32.69928556
          },
          {
            "average": 0.4881420444,
            "count": 1091377,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998595981,
            "variance": 0.2498596178
          },
          {
            "average": 417.6754357,
            "count": 1091377,
            "maximum": 420,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6153831522,
            "variance": 0.378696424
          },
          {
            "average": 220421511.1,
            "count": 1091377,
            "maximum": 220422987,
            "minimum": 220420773.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 471.4020114,
            "variance": 222219.8564
          },
          {
            "average": 0.4881420444,
            "count": 1091377,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998595981,
            "variance": 0.2498596178
          },
          {
            "average": 0,
            "count": 1091377,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1091377,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1091377,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01192988307,
            "count": 1091377,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1085705843,
            "variance": 0.01178757176
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87122.05041,
          2374539.451,
          0.905143891,
          -86640.09041,
          2374944.151,
          1.825143891
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87122.05041344084,
                2374539.450616173,
                0.905143891049082
              ],
              [
                -87122.05041344084,
                2374944.150616173,
                0.905143891049082
              ],
              [
                -86640.09041344085,
                2374944.150616173,
                1.825143891049082
              ],
              [
                -86640.09041344085,
                2374539.450616173,
                1.825143891049082
              ],
              [
                -87122.05041344084,
                2374539.450616173,
                0.905143891049082
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:07+00:00",
        "end_time": "2018-09-08T05:46:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2390.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2390.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2390.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2390.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3808895,
            71.35583344,
            0.905143891,
            -156.3673355,
            71.35970904,
            1.825143891
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.3804932420293,
                  71.35583343950923,
                  0.905143891049082
                ],
                [
                  -156.38088950627971,
                  71.35955070435519,
                  0.905143891049082
                ],
                [
                  -156.36772959264604,
                  71.35970904434025,
                  1.825143891049082
                ],
                [
                  -156.3673355149481,
                  71.35599174912998,
                  1.825143891049082
                ],
                [
                  -156.3804932420293,
                  71.35583343950923,
                  0.905143891049082
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2390.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2390.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:07Z",
            "pc:count": 1091377,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86865.20435,
                "count": 1091377,
                "maximum": -86640.09041,
                "minimum": -87122.05041,
                "name": "X",
                "position": 0,
                "stddev": 131.8057148,
                "variance": 17372.74645
              },
              {
                "average": 2374774.533,
                "count": 1091377,
                "maximum": 2374944.151,
                "minimum": 2374539.451,
                "name": "Y",
                "position": 1,
                "stddev": 93.14234324,
                "variance": 8675.496104
              },
              {
                "average": 1.151772563,
                "count": 1091377,
                "maximum": 1.825143891,
                "minimum": 0.905143891,
                "name": "Z",
                "position": 2,
                "stddev": 0.05197609,
                "variance": 0.002701513932
              },
              {
                "average": 21023.84229,
                "count": 1091377,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14813.62613,
                "variance": 219443519.1
              },
              {
                "average": 1,
                "count": 1091377,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1091377,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4920811049,
                "count": 1091377,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999375162,
                "variance": 0.2499375201
              },
              {
                "average": 0.0006029080693,
                "count": 1091377,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02454679456,
                "variance": 0.0006025451233
              },
              {
                "average": 8.299302624,
                "count": 1091377,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.618647372,
                "variance": 2.620019314
              },
              {
                "average": 3.240856247,
                "count": 1091377,
                "maximum": 16.25399971,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.718328913,
                "variance": 32.69928556
              },
              {
                "average": 0.4881420444,
                "count": 1091377,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998595981,
                "variance": 0.2498596178
              },
              {
                "average": 417.6754357,
                "count": 1091377,
                "maximum": 420,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6153831522,
                "variance": 0.378696424
              },
              {
                "average": 220421511.1,
                "count": 1091377,
                "maximum": 220422987,
                "minimum": 220420773.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 471.4020114,
                "variance": 222219.8564
              },
              {
                "average": 0.4881420444,
                "count": 1091377,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998595981,
                "variance": 0.2498596178
              },
              {
                "average": 0,
                "count": 1091377,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1091377,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1091377,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01192988307,
                "count": 1091377,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1085705843,
                "variance": 0.01178757176
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87122.05041,
              2374539.451,
              0.905143891,
              -86640.09041,
              2374944.151,
              1.825143891
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87122.05041344084,
                    2374539.450616173,
                    0.905143891049082
                  ],
                  [
                    -87122.05041344084,
                    2374944.150616173,
                    0.905143891049082
                  ],
                  [
                    -86640.09041344085,
                    2374944.150616173,
                    1.825143891049082
                  ],
                  [
                    -86640.09041344085,
                    2374539.450616173,
                    1.825143891049082
                  ],
                  [
                    -87122.05041344084,
                    2374539.450616173,
                    0.905143891049082
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:07+00:00",
            "end_time": "2018-09-08T05:46:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2369.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.53504463338095,
              71.34963785631888,
              0.844309332201912
            ],
            [
              -156.53538198683924,
              71.35261017651864,
              0.844309332201912
            ],
            [
              -156.5220504200277,
              71.35278106806396,
              1.424309332201912
            ],
            [
              -156.5217148370235,
              71.34980872166982,
              1.424309332201912
            ],
            [
              -156.53504463338095,
              71.34963785631888,
              0.844309332201912
            ]
          ]
        ]
      },
      "bbox": [
        -156.535382,
        71.34963786,
        0.8443093322,
        -156.5217148,
        71.35278107,
        1.424309332
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:17Z",
        "pc:count": 564319,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92625.57394,
            "count": 564319,
            "maximum": -92312.99346,
            "minimum": -92801.43346,
            "name": "X",
            "position": 0,
            "stddev": 117.6858307,
            "variance": 13849.95474
          },
          {
            "average": 2374282.379,
            "count": 564319,
            "maximum": 2374398.805,
            "minimum": 2374075.165,
            "name": "Y",
            "position": 1,
            "stddev": 74.00779146,
            "variance": 5477.153197
          },
          {
            "average": 1.110391495,
            "count": 564319,
            "maximum": 1.424309332,
            "minimum": 0.8443093322,
            "name": "Z",
            "position": 2,
            "stddev": 0.05914290284,
            "variance": 0.003497882957
          },
          {
            "average": 15460.92092,
            "count": 564319,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11982.20738,
            "variance": 143573293.8
          },
          {
            "average": 1,
            "count": 564319,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 564319,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5038302804,
            "count": 564319,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999857717,
            "variance": 0.2499857719
          },
          {
            "average": 0.0005103496427,
            "count": 564319,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02258517412,
            "variance": 0.0005100900898
          },
          {
            "average": 7.728414248,
            "count": 564319,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.389225306,
            "variance": 5.708397563
          },
          {
            "average": -1.151765515,
            "count": 564319,
            "maximum": 16.40999985,
            "minimum": -15.71399975,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.778450678,
            "variance": 60.50429496
          },
          {
            "average": 0.479576268,
            "count": 564319,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995831397,
            "variance": 0.2495833134
          },
          {
            "average": 408.8992059,
            "count": 564319,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6635852604,
            "variance": 0.4403453978
          },
          {
            "average": 220416674.9,
            "count": 564319,
            "maximum": 220417417.4,
            "minimum": 220415496.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 374.9570695,
            "variance": 140592.804
          },
          {
            "average": 0.479576268,
            "count": 564319,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995831397,
            "variance": 0.2495833134
          },
          {
            "average": 0,
            "count": 564319,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 564319,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 564319,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04261065107,
            "count": 564319,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2019778596,
            "variance": 0.04079505577
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92801.43346,
          2374075.165,
          0.8443093322,
          -92312.99346,
          2374398.805,
          1.424309332
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92801.43345548733,
                2374075.1653344766,
                0.844309332201912
              ],
              [
                -92801.43345548733,
                2374398.8053344763,
                0.844309332201912
              ],
              [
                -92312.99345548733,
                2374398.8053344763,
                1.424309332201912
              ],
              [
                -92312.99345548733,
                2374075.1653344766,
                1.424309332201912
              ],
              [
                -92801.43345548733,
                2374075.1653344766,
                0.844309332201912
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:17+00:00",
        "end_time": "2018-09-08T04:18:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2369.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2369.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2369.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2369.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.535382,
            71.34963786,
            0.8443093322,
            -156.5217148,
            71.35278107,
            1.424309332
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.53504463338095,
                  71.34963785631888,
                  0.844309332201912
                ],
                [
                  -156.53538198683924,
                  71.35261017651864,
                  0.844309332201912
                ],
                [
                  -156.5220504200277,
                  71.35278106806396,
                  1.424309332201912
                ],
                [
                  -156.5217148370235,
                  71.34980872166982,
                  1.424309332201912
                ],
                [
                  -156.53504463338095,
                  71.34963785631888,
                  0.844309332201912
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2369.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2369.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:17Z",
            "pc:count": 564319,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92625.57394,
                "count": 564319,
                "maximum": -92312.99346,
                "minimum": -92801.43346,
                "name": "X",
                "position": 0,
                "stddev": 117.6858307,
                "variance": 13849.95474
              },
              {
                "average": 2374282.379,
                "count": 564319,
                "maximum": 2374398.805,
                "minimum": 2374075.165,
                "name": "Y",
                "position": 1,
                "stddev": 74.00779146,
                "variance": 5477.153197
              },
              {
                "average": 1.110391495,
                "count": 564319,
                "maximum": 1.424309332,
                "minimum": 0.8443093322,
                "name": "Z",
                "position": 2,
                "stddev": 0.05914290284,
                "variance": 0.003497882957
              },
              {
                "average": 15460.92092,
                "count": 564319,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11982.20738,
                "variance": 143573293.8
              },
              {
                "average": 1,
                "count": 564319,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 564319,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5038302804,
                "count": 564319,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999857717,
                "variance": 0.2499857719
              },
              {
                "average": 0.0005103496427,
                "count": 564319,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02258517412,
                "variance": 0.0005100900898
              },
              {
                "average": 7.728414248,
                "count": 564319,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.389225306,
                "variance": 5.708397563
              },
              {
                "average": -1.151765515,
                "count": 564319,
                "maximum": 16.40999985,
                "minimum": -15.71399975,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.778450678,
                "variance": 60.50429496
              },
              {
                "average": 0.479576268,
                "count": 564319,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995831397,
                "variance": 0.2495833134
              },
              {
                "average": 408.8992059,
                "count": 564319,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6635852604,
                "variance": 0.4403453978
              },
              {
                "average": 220416674.9,
                "count": 564319,
                "maximum": 220417417.4,
                "minimum": 220415496.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 374.9570695,
                "variance": 140592.804
              },
              {
                "average": 0.479576268,
                "count": 564319,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995831397,
                "variance": 0.2495833134
              },
              {
                "average": 0,
                "count": 564319,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 564319,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 564319,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04261065107,
                "count": 564319,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2019778596,
                "variance": 0.04079505577
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92801.43346,
              2374075.165,
              0.8443093322,
              -92312.99346,
              2374398.805,
              1.424309332
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92801.43345548733,
                    2374075.1653344766,
                    0.844309332201912
                  ],
                  [
                    -92801.43345548733,
                    2374398.8053344763,
                    0.844309332201912
                  ],
                  [
                    -92312.99345548733,
                    2374398.8053344763,
                    1.424309332201912
                  ],
                  [
                    -92312.99345548733,
                    2374075.1653344766,
                    1.424309332201912
                  ],
                  [
                    -92801.43345548733,
                    2374075.1653344766,
                    0.844309332201912
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:17+00:00",
            "end_time": "2018-09-08T04:18:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2194.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75588897220788,
              71.30065677151346,
              -13.288952111056474
            ],
            [
              -156.75642454963344,
              71.30500487635396,
              -13.288952111056474
            ],
            [
              -156.74292101653626,
              71.30519345377976,
              114.11104788894353
            ],
            [
              -156.742388056884,
              71.30084530677401,
              114.11104788894353
            ],
            [
              -156.75588897220788,
              71.30065677151346,
              -13.288952111056474
            ]
          ]
        ]
      },
      "bbox": [
        -156.7564245,
        71.30065677,
        -13.28895211,
        -156.7423881,
        71.30519345,
        114.1110479
      ],
      "properties": {
        "datetime": "2018-09-08T04:21:04Z",
        "pc:count": 3173409,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100858.6952,
            "count": 3173409,
            "maximum": -100606.7911,
            "minimum": -101102.6511,
            "name": "X",
            "position": 0,
            "stddev": 133.5433759,
            "variance": 17833.83325
          },
          {
            "average": 2369301.245,
            "count": 3173409,
            "maximum": 2369545.109,
            "minimum": 2369071.449,
            "name": "Y",
            "position": 1,
            "stddev": 129.7646012,
            "variance": 16838.85174
          },
          {
            "average": 5.647655282,
            "count": 3173409,
            "maximum": 114.1110479,
            "minimum": -13.28895211,
            "name": "Z",
            "position": 2,
            "stddev": 2.185686813,
            "variance": 4.777226843
          },
          {
            "average": 33298.32383,
            "count": 3173409,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12892.12696,
            "variance": 166206937.5
          },
          {
            "average": 1.027708058,
            "count": 3173409,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1679722286,
            "variance": 0.02821466959
          },
          {
            "average": 1.05544164,
            "count": 3173409,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2370475285,
            "variance": 0.05619153077
          },
          {
            "average": 0.4972056864,
            "count": 3173409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999922705,
            "variance": 0.2499922706
          },
          {
            "average": 0.0004228890761,
            "count": 3173409,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02055992155,
            "variance": 0.0004227103741
          },
          {
            "average": 1.829823386,
            "count": 3173409,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.442126465,
            "variance": 2.07972874
          },
          {
            "average": 0.465943125,
            "count": 3173409,
            "maximum": 16.29000092,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.03706632,
            "variance": 100.7427003
          },
          {
            "average": 0.4572272279,
            "count": 3173409,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498167209,
            "variance": 0.2481705682
          },
          {
            "average": 405.4999519,
            "count": 3173409,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.912879831,
            "variance": 0.8333495859
          },
          {
            "average": 220414761.7,
            "count": 3173409,
            "maximum": 220415664.3,
            "minimum": 220413855,
            "name": "GpsTime",
            "position": 12,
            "stddev": 523.3287609,
            "variance": 273872.992
          },
          {
            "average": 0.4572272279,
            "count": 3173409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498167209,
            "variance": 0.2481705682
          },
          {
            "average": 0,
            "count": 3173409,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3173409,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3173409,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1978203881,
            "count": 3173409,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3983560369,
            "variance": 0.1586875322
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101102.6511,
          2369071.449,
          -13.28895211,
          -100606.7911,
          2369545.109,
          114.1110479
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101102.65114398595,
                2369071.448609014,
                -13.288952111056474
              ],
              [
                -101102.65114398595,
                2369545.108609014,
                -13.288952111056474
              ],
              [
                -100606.79114398596,
                2369545.108609014,
                114.11104788894353
              ],
              [
                -100606.79114398596,
                2369071.448609014,
                114.11104788894353
              ],
              [
                -101102.65114398595,
                2369071.448609014,
                -13.288952111056474
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:21:04+00:00",
        "end_time": "2018-09-08T03:50:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2194.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2194.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2194.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2194.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7564245,
            71.30065677,
            -13.28895211,
            -156.7423881,
            71.30519345,
            114.1110479
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75588897220788,
                  71.30065677151346,
                  -13.288952111056474
                ],
                [
                  -156.75642454963344,
                  71.30500487635396,
                  -13.288952111056474
                ],
                [
                  -156.74292101653626,
                  71.30519345377976,
                  114.11104788894353
                ],
                [
                  -156.742388056884,
                  71.30084530677401,
                  114.11104788894353
                ],
                [
                  -156.75588897220788,
                  71.30065677151346,
                  -13.288952111056474
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2194.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2194.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:21:04Z",
            "pc:count": 3173409,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100858.6952,
                "count": 3173409,
                "maximum": -100606.7911,
                "minimum": -101102.6511,
                "name": "X",
                "position": 0,
                "stddev": 133.5433759,
                "variance": 17833.83325
              },
              {
                "average": 2369301.245,
                "count": 3173409,
                "maximum": 2369545.109,
                "minimum": 2369071.449,
                "name": "Y",
                "position": 1,
                "stddev": 129.7646012,
                "variance": 16838.85174
              },
              {
                "average": 5.647655282,
                "count": 3173409,
                "maximum": 114.1110479,
                "minimum": -13.28895211,
                "name": "Z",
                "position": 2,
                "stddev": 2.185686813,
                "variance": 4.777226843
              },
              {
                "average": 33298.32383,
                "count": 3173409,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12892.12696,
                "variance": 166206937.5
              },
              {
                "average": 1.027708058,
                "count": 3173409,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1679722286,
                "variance": 0.02821466959
              },
              {
                "average": 1.05544164,
                "count": 3173409,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2370475285,
                "variance": 0.05619153077
              },
              {
                "average": 0.4972056864,
                "count": 3173409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999922705,
                "variance": 0.2499922706
              },
              {
                "average": 0.0004228890761,
                "count": 3173409,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02055992155,
                "variance": 0.0004227103741
              },
              {
                "average": 1.829823386,
                "count": 3173409,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.442126465,
                "variance": 2.07972874
              },
              {
                "average": 0.465943125,
                "count": 3173409,
                "maximum": 16.29000092,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.03706632,
                "variance": 100.7427003
              },
              {
                "average": 0.4572272279,
                "count": 3173409,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498167209,
                "variance": 0.2481705682
              },
              {
                "average": 405.4999519,
                "count": 3173409,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.912879831,
                "variance": 0.8333495859
              },
              {
                "average": 220414761.7,
                "count": 3173409,
                "maximum": 220415664.3,
                "minimum": 220413855,
                "name": "GpsTime",
                "position": 12,
                "stddev": 523.3287609,
                "variance": 273872.992
              },
              {
                "average": 0.4572272279,
                "count": 3173409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498167209,
                "variance": 0.2481705682
              },
              {
                "average": 0,
                "count": 3173409,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3173409,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3173409,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1978203881,
                "count": 3173409,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3983560369,
                "variance": 0.1586875322
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101102.6511,
              2369071.449,
              -13.28895211,
              -100606.7911,
              2369545.109,
              114.1110479
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101102.65114398595,
                    2369071.448609014,
                    -13.288952111056474
                  ],
                  [
                    -101102.65114398595,
                    2369545.108609014,
                    -13.288952111056474
                  ],
                  [
                    -100606.79114398596,
                    2369545.108609014,
                    114.11104788894353
                  ],
                  [
                    -100606.79114398596,
                    2369071.448609014,
                    114.11104788894353
                  ],
                  [
                    -101102.65114398595,
                    2369071.448609014,
                    -13.288952111056474
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:21:04+00:00",
            "end_time": "2018-09-08T03:50:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2370.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5220156058389,
              71.35251024672493,
              1.083584359062684
            ],
            [
              -156.52201631100806,
              71.35251649197335,
              1.083584359062684
            ],
            [
              -156.5219808287282,
              71.35251694559886,
              1.203584359062684
            ],
            [
              -156.52198012356897,
              71.35251070035025,
              1.203584359062684
            ],
            [
              -156.5220156058389,
              71.35251024672493,
              1.083584359062684
            ]
          ]
        ]
      },
      "bbox": [
        -156.5220163,
        71.35251025,
        1.083584359,
        -156.5219801,
        71.35251695,
        1.203584359
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:17Z",
        "pc:count": 11,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92312.19035,
            "count": 11,
            "maximum": -92311.53853,
            "minimum": -92312.83853,
            "name": "X",
            "position": 0,
            "stddev": 0.4827176852,
            "variance": 0.2330163636
          },
          {
            "average": 2374369.672,
            "count": 11,
            "maximum": 2374369.992,
            "minimum": 2374369.312,
            "name": "Y",
            "position": 1,
            "stddev": 0.2350744562,
            "variance": 0.05525999995
          },
          {
            "average": 1.145402541,
            "count": 11,
            "maximum": 1.203584359,
            "minimum": 1.083584359,
            "name": "Z",
            "position": 2,
            "stddev": 0.03842347767,
            "variance": 0.001476363636
          },
          {
            "average": 10329.81818,
            "count": 11,
            "maximum": 20961,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 6254.600976,
            "variance": 39120033.36
          },
          {
            "average": 1,
            "count": 11,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 11,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4545454545,
            "count": 11,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5222329679,
            "variance": 0.2727272727
          },
          {
            "average": 0,
            "count": 11,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 7.545454545,
            "count": 11,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.381748785,
            "variance": 5.672727273
          },
          {
            "average": 3.924545396,
            "count": 11,
            "maximum": 10.10400009,
            "minimum": -13.89000034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.573352883,
            "variance": 43.20896813
          },
          {
            "average": 0.3636363636,
            "count": 11,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.5045249791,
            "variance": 0.2545454545
          },
          {
            "average": 409.2727273,
            "count": 11,
            "maximum": 410,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6466697907,
            "variance": 0.4181818182
          },
          {
            "average": 220416888.7,
            "count": 11,
            "maximum": 220417417.4,
            "minimum": 220416278.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 432.1317875,
            "variance": 186737.8818
          },
          {
            "average": 0.3636363636,
            "count": 11,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.5045249791,
            "variance": 0.2545454545
          },
          {
            "average": 0,
            "count": 11,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 11,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 11,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09090909091,
            "count": 11,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3015113446,
            "variance": 0.09090909091
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92312.83853,
          2374369.312,
          1.083584359,
          -92311.53853,
          2374369.992,
          1.203584359
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92312.83853257797,
                2374369.311694879,
                1.083584359062684
              ],
              [
                -92312.83853257797,
                2374369.991694879,
                1.083584359062684
              ],
              [
                -92311.53853257798,
                2374369.991694879,
                1.203584359062684
              ],
              [
                -92311.53853257798,
                2374369.311694879,
                1.203584359062684
              ],
              [
                -92312.83853257797,
                2374369.311694879,
                1.083584359062684
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:17+00:00",
        "end_time": "2018-09-08T04:31:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2370.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2370.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2370.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2370.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5220163,
            71.35251025,
            1.083584359,
            -156.5219801,
            71.35251695,
            1.203584359
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5220156058389,
                  71.35251024672493,
                  1.083584359062684
                ],
                [
                  -156.52201631100806,
                  71.35251649197335,
                  1.083584359062684
                ],
                [
                  -156.5219808287282,
                  71.35251694559886,
                  1.203584359062684
                ],
                [
                  -156.52198012356897,
                  71.35251070035025,
                  1.203584359062684
                ],
                [
                  -156.5220156058389,
                  71.35251024672493,
                  1.083584359062684
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2370.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2370.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:17Z",
            "pc:count": 11,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92312.19035,
                "count": 11,
                "maximum": -92311.53853,
                "minimum": -92312.83853,
                "name": "X",
                "position": 0,
                "stddev": 0.4827176852,
                "variance": 0.2330163636
              },
              {
                "average": 2374369.672,
                "count": 11,
                "maximum": 2374369.992,
                "minimum": 2374369.312,
                "name": "Y",
                "position": 1,
                "stddev": 0.2350744562,
                "variance": 0.05525999995
              },
              {
                "average": 1.145402541,
                "count": 11,
                "maximum": 1.203584359,
                "minimum": 1.083584359,
                "name": "Z",
                "position": 2,
                "stddev": 0.03842347767,
                "variance": 0.001476363636
              },
              {
                "average": 10329.81818,
                "count": 11,
                "maximum": 20961,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 6254.600976,
                "variance": 39120033.36
              },
              {
                "average": 1,
                "count": 11,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 11,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4545454545,
                "count": 11,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5222329679,
                "variance": 0.2727272727
              },
              {
                "average": 0,
                "count": 11,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 7.545454545,
                "count": 11,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.381748785,
                "variance": 5.672727273
              },
              {
                "average": 3.924545396,
                "count": 11,
                "maximum": 10.10400009,
                "minimum": -13.89000034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.573352883,
                "variance": 43.20896813
              },
              {
                "average": 0.3636363636,
                "count": 11,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.5045249791,
                "variance": 0.2545454545
              },
              {
                "average": 409.2727273,
                "count": 11,
                "maximum": 410,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6466697907,
                "variance": 0.4181818182
              },
              {
                "average": 220416888.7,
                "count": 11,
                "maximum": 220417417.4,
                "minimum": 220416278.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 432.1317875,
                "variance": 186737.8818
              },
              {
                "average": 0.3636363636,
                "count": 11,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.5045249791,
                "variance": 0.2545454545
              },
              {
                "average": 0,
                "count": 11,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 11,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 11,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09090909091,
                "count": 11,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3015113446,
                "variance": 0.09090909091
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92312.83853,
              2374369.312,
              1.083584359,
              -92311.53853,
              2374369.992,
              1.203584359
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92312.83853257797,
                    2374369.311694879,
                    1.083584359062684
                  ],
                  [
                    -92312.83853257797,
                    2374369.991694879,
                    1.083584359062684
                  ],
                  [
                    -92311.53853257798,
                    2374369.991694879,
                    1.203584359062684
                  ],
                  [
                    -92311.53853257798,
                    2374369.311694879,
                    1.203584359062684
                  ],
                  [
                    -92312.83853257797,
                    2374369.311694879,
                    1.083584359062684
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:17+00:00",
            "end_time": "2018-09-08T04:31:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2240.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66593434971546,
              71.3082395908969,
              3.359469578940982
            ],
            [
              -156.66645256486717,
              71.31258760868202,
              3.359469578940982
            ],
            [
              -156.65294316773625,
              71.31277003554464,
              13.239469578940984
            ],
            [
              -156.65242757248436,
              71.30842197695245,
              13.239469578940984
            ],
            [
              -156.66593434971546,
              71.3082395908969,
              3.359469578940982
            ]
          ]
        ]
      },
      "bbox": [
        -156.6664526,
        71.30823959,
        3.359469579,
        -156.6524276,
        71.31277004,
        13.23946958
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:02Z",
        "pc:count": 2912369,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97526.88852,
            "count": 2912369,
            "maximum": -97275.37352,
            "minimum": -97771.25352,
            "name": "X",
            "position": 0,
            "stddev": 134.3240415,
            "variance": 18042.94813
          },
          {
            "average": 2370002.368,
            "count": 2912369,
            "maximum": 2370234.985,
            "minimum": 2369761.385,
            "name": "Y",
            "position": 1,
            "stddev": 126.3096808,
            "variance": 15954.13547
          },
          {
            "average": 5.519624158,
            "count": 2912369,
            "maximum": 13.23946958,
            "minimum": 3.359469579,
            "name": "Z",
            "position": 2,
            "stddev": 1.031016756,
            "variance": 1.062995551
          },
          {
            "average": 44327.46868,
            "count": 2912369,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9682.276012,
            "variance": 93746468.76
          },
          {
            "average": 1.000174428,
            "count": 2912369,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01447138997,
            "variance": 0.0002094211275
          },
          {
            "average": 1.00034714,
            "count": 2912369,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02126238063,
            "variance": 0.0004520888299
          },
          {
            "average": 0.5001910816,
            "count": 2912369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000493,
            "variance": 0.2500000493
          },
          {
            "average": 0.0005009667388,
            "count": 2912369,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02237668302,
            "variance": 0.000500715943
          },
          {
            "average": 1.497712343,
            "count": 2912369,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.246112303,
            "variance": 1.552795872
          },
          {
            "average": -1.221573881,
            "count": 2912369,
            "maximum": 16.30800056,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.32886214,
            "variance": 106.6853931
          },
          {
            "average": 0.4557640189,
            "count": 2912369,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980394193,
            "variance": 0.2480432631
          },
          {
            "average": 409.6885865,
            "count": 2912369,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9737984379,
            "variance": 0.9482833976
          },
          {
            "average": 220417133.1,
            "count": 2912369,
            "maximum": 220417882.7,
            "minimum": 220416159.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 550.4321934,
            "variance": 302975.5995
          },
          {
            "average": 0.4557640189,
            "count": 2912369,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980394193,
            "variance": 0.2480432631
          },
          {
            "average": 0,
            "count": 2912369,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2912369,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2912369,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2166682862,
            "count": 2912369,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4119747544,
            "variance": 0.1697231982
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97771.25352,
          2369761.385,
          3.359469579,
          -97275.37352,
          2370234.985,
          13.23946958
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97771.25351954006,
                2369761.3853804357,
                3.359469578940982
              ],
              [
                -97771.25351954006,
                2370234.9853804354,
                3.359469578940982
              ],
              [
                -97275.37351954005,
                2370234.9853804354,
                13.239469578940984
              ],
              [
                -97275.37351954005,
                2369761.3853804357,
                13.239469578940984
              ],
              [
                -97771.25351954006,
                2369761.3853804357,
                3.359469578940982
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:02+00:00",
        "end_time": "2018-09-08T04:29:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2240.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2240.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2240.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2240.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6664526,
            71.30823959,
            3.359469579,
            -156.6524276,
            71.31277004,
            13.23946958
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66593434971546,
                  71.3082395908969,
                  3.359469578940982
                ],
                [
                  -156.66645256486717,
                  71.31258760868202,
                  3.359469578940982
                ],
                [
                  -156.65294316773625,
                  71.31277003554464,
                  13.239469578940984
                ],
                [
                  -156.65242757248436,
                  71.30842197695245,
                  13.239469578940984
                ],
                [
                  -156.66593434971546,
                  71.3082395908969,
                  3.359469578940982
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2240.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2240.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:02Z",
            "pc:count": 2912369,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97526.88852,
                "count": 2912369,
                "maximum": -97275.37352,
                "minimum": -97771.25352,
                "name": "X",
                "position": 0,
                "stddev": 134.3240415,
                "variance": 18042.94813
              },
              {
                "average": 2370002.368,
                "count": 2912369,
                "maximum": 2370234.985,
                "minimum": 2369761.385,
                "name": "Y",
                "position": 1,
                "stddev": 126.3096808,
                "variance": 15954.13547
              },
              {
                "average": 5.519624158,
                "count": 2912369,
                "maximum": 13.23946958,
                "minimum": 3.359469579,
                "name": "Z",
                "position": 2,
                "stddev": 1.031016756,
                "variance": 1.062995551
              },
              {
                "average": 44327.46868,
                "count": 2912369,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9682.276012,
                "variance": 93746468.76
              },
              {
                "average": 1.000174428,
                "count": 2912369,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01447138997,
                "variance": 0.0002094211275
              },
              {
                "average": 1.00034714,
                "count": 2912369,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02126238063,
                "variance": 0.0004520888299
              },
              {
                "average": 0.5001910816,
                "count": 2912369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000493,
                "variance": 0.2500000493
              },
              {
                "average": 0.0005009667388,
                "count": 2912369,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02237668302,
                "variance": 0.000500715943
              },
              {
                "average": 1.497712343,
                "count": 2912369,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.246112303,
                "variance": 1.552795872
              },
              {
                "average": -1.221573881,
                "count": 2912369,
                "maximum": 16.30800056,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.32886214,
                "variance": 106.6853931
              },
              {
                "average": 0.4557640189,
                "count": 2912369,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980394193,
                "variance": 0.2480432631
              },
              {
                "average": 409.6885865,
                "count": 2912369,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9737984379,
                "variance": 0.9482833976
              },
              {
                "average": 220417133.1,
                "count": 2912369,
                "maximum": 220417882.7,
                "minimum": 220416159.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 550.4321934,
                "variance": 302975.5995
              },
              {
                "average": 0.4557640189,
                "count": 2912369,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980394193,
                "variance": 0.2480432631
              },
              {
                "average": 0,
                "count": 2912369,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2912369,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2912369,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2166682862,
                "count": 2912369,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4119747544,
                "variance": 0.1697231982
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97771.25352,
              2369761.385,
              3.359469579,
              -97275.37352,
              2370234.985,
              13.23946958
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97771.25351954006,
                    2369761.3853804357,
                    3.359469578940982
                  ],
                  [
                    -97771.25351954006,
                    2370234.9853804354,
                    3.359469578940982
                  ],
                  [
                    -97275.37351954005,
                    2370234.9853804354,
                    13.239469578940984
                  ],
                  [
                    -97275.37351954005,
                    2369761.3853804357,
                    13.239469578940984
                  ],
                  [
                    -97771.25351954006,
                    2369761.3853804357,
                    3.359469578940982
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:02+00:00",
            "end_time": "2018-09-08T04:29:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2271.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6781528670387,
              71.31652371844116,
              1.421509799170262
            ],
            [
              -156.67867360476347,
              71.32087158094585,
              1.421509799170262
            ],
            [
              -156.6651571248457,
              71.32105488521161,
              4.261509799170263
            ],
            [
              -156.66463900908508,
              71.31670698168539,
              4.261509799170263
            ],
            [
              -156.6781528670387,
              71.31652371844116,
              1.421509799170262
            ]
          ]
        ]
      },
      "bbox": [
        -156.6786736,
        71.31652372,
        1.421509799,
        -156.664639,
        71.32105489,
        4.261509799
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:14Z",
        "pc:count": 2488192,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97904.94415,
            "count": 2488192,
            "maximum": -97686.80793,
            "minimum": -98182.76793,
            "name": "X",
            "position": 0,
            "stddev": 129.3799033,
            "variance": 16739.15937
          },
          {
            "average": 2370934.74,
            "count": 2488192,
            "maximum": 2371153.836,
            "minimum": 2370680.276,
            "name": "Y",
            "position": 1,
            "stddev": 129.3279018,
            "variance": 16725.70618
          },
          {
            "average": 2.749492559,
            "count": 2488192,
            "maximum": 4.261509799,
            "minimum": 1.421509799,
            "name": "Z",
            "position": 2,
            "stddev": 0.7659710529,
            "variance": 0.5867116539
          },
          {
            "average": 37544.49346,
            "count": 2488192,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16428.61256,
            "variance": 269899310.6
          },
          {
            "average": 1,
            "count": 2488192,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2488192,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5012233783,
            "count": 2488192,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999986038,
            "variance": 0.2499986038
          },
          {
            "average": 0.0005027747055,
            "count": 2488192,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02241700526,
            "variance": 0.000502522125
          },
          {
            "average": 3.032125736,
            "count": 2488192,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.182977353,
            "variance": 10.13134483
          },
          {
            "average": -0.1388668801,
            "count": 2488192,
            "maximum": 16.3920002,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.631938331,
            "variance": 92.77423601
          },
          {
            "average": 0.4862132826,
            "count": 2488192,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998099907,
            "variance": 0.2498100268
          },
          {
            "average": 407.0402115,
            "count": 2488192,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8779752918,
            "variance": 0.7708406131
          },
          {
            "average": 220415629.7,
            "count": 2488192,
            "maximum": 220416754.7,
            "minimum": 220414471.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 495.7571798,
            "variance": 245775.1813
          },
          {
            "average": 0.4862132826,
            "count": 2488192,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998099907,
            "variance": 0.2498100268
          },
          {
            "average": 0,
            "count": 2488192,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2488192,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2488192,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1908574579,
            "count": 2488192,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3929770359,
            "variance": 0.1544309508
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98182.76793,
          2370680.276,
          1.421509799,
          -97686.80793,
          2371153.836,
          4.261509799
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98182.76793003122,
                2370680.2763908277,
                1.421509799170262
              ],
              [
                -98182.76793003122,
                2371153.8363908273,
                1.421509799170262
              ],
              [
                -97686.80793003122,
                2371153.8363908273,
                4.261509799170263
              ],
              [
                -97686.80793003122,
                2370680.2763908277,
                4.261509799170263
              ],
              [
                -98182.76793003122,
                2370680.2763908277,
                1.421509799170262
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:14+00:00",
        "end_time": "2018-09-08T04:01:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2271.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2271.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2271.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2271.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6786736,
            71.31652372,
            1.421509799,
            -156.664639,
            71.32105489,
            4.261509799
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6781528670387,
                  71.31652371844116,
                  1.421509799170262
                ],
                [
                  -156.67867360476347,
                  71.32087158094585,
                  1.421509799170262
                ],
                [
                  -156.6651571248457,
                  71.32105488521161,
                  4.261509799170263
                ],
                [
                  -156.66463900908508,
                  71.31670698168539,
                  4.261509799170263
                ],
                [
                  -156.6781528670387,
                  71.31652371844116,
                  1.421509799170262
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2271.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2271.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:14Z",
            "pc:count": 2488192,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97904.94415,
                "count": 2488192,
                "maximum": -97686.80793,
                "minimum": -98182.76793,
                "name": "X",
                "position": 0,
                "stddev": 129.3799033,
                "variance": 16739.15937
              },
              {
                "average": 2370934.74,
                "count": 2488192,
                "maximum": 2371153.836,
                "minimum": 2370680.276,
                "name": "Y",
                "position": 1,
                "stddev": 129.3279018,
                "variance": 16725.70618
              },
              {
                "average": 2.749492559,
                "count": 2488192,
                "maximum": 4.261509799,
                "minimum": 1.421509799,
                "name": "Z",
                "position": 2,
                "stddev": 0.7659710529,
                "variance": 0.5867116539
              },
              {
                "average": 37544.49346,
                "count": 2488192,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16428.61256,
                "variance": 269899310.6
              },
              {
                "average": 1,
                "count": 2488192,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2488192,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5012233783,
                "count": 2488192,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999986038,
                "variance": 0.2499986038
              },
              {
                "average": 0.0005027747055,
                "count": 2488192,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02241700526,
                "variance": 0.000502522125
              },
              {
                "average": 3.032125736,
                "count": 2488192,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.182977353,
                "variance": 10.13134483
              },
              {
                "average": -0.1388668801,
                "count": 2488192,
                "maximum": 16.3920002,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.631938331,
                "variance": 92.77423601
              },
              {
                "average": 0.4862132826,
                "count": 2488192,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998099907,
                "variance": 0.2498100268
              },
              {
                "average": 407.0402115,
                "count": 2488192,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8779752918,
                "variance": 0.7708406131
              },
              {
                "average": 220415629.7,
                "count": 2488192,
                "maximum": 220416754.7,
                "minimum": 220414471.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 495.7571798,
                "variance": 245775.1813
              },
              {
                "average": 0.4862132826,
                "count": 2488192,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998099907,
                "variance": 0.2498100268
              },
              {
                "average": 0,
                "count": 2488192,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2488192,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2488192,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1908574579,
                "count": 2488192,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3929770359,
                "variance": 0.1544309508
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98182.76793,
              2370680.276,
              1.421509799,
              -97686.80793,
              2371153.836,
              4.261509799
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98182.76793003122,
                    2370680.2763908277,
                    1.421509799170262
                  ],
                  [
                    -98182.76793003122,
                    2371153.8363908273,
                    1.421509799170262
                  ],
                  [
                    -97686.80793003122,
                    2371153.8363908273,
                    4.261509799170263
                  ],
                  [
                    -97686.80793003122,
                    2370680.2763908277,
                    4.261509799170263
                  ],
                  [
                    -98182.76793003122,
                    2370680.2763908277,
                    1.421509799170262
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:14+00:00",
            "end_time": "2018-09-08T04:01:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2371.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5918660534421,
              71.35293172624048,
              0.866250367019554
            ],
            [
              -156.5919848889301,
              71.35395572828246,
              0.866250367019554
            ],
            [
              -156.58596583796057,
              71.35403472043626,
              1.526250367019554
            ],
            [
              -156.58584727787098,
              71.3530107142222,
              1.526250367019554
            ],
            [
              -156.5918660534421,
              71.35293172624048,
              0.866250367019554
            ]
          ]
        ]
      },
      "bbox": [
        -156.5919849,
        71.35293173,
        0.866250367,
        -156.5858473,
        71.35403472,
        1.526250367
      ],
      "properties": {
        "datetime": "2018-09-08T04:12:11Z",
        "pc:count": 114436,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94720.26806,
            "count": 114436,
            "maximum": -94645.97063,
            "minimum": -94866.49063,
            "name": "X",
            "position": 0,
            "stddev": 50.531597,
            "variance": 2553.442296
          },
          {
            "average": 2374555.815,
            "count": 114436,
            "maximum": 2374625.073,
            "minimum": 2374513.573,
            "name": "Y",
            "position": 1,
            "stddev": 25.2126386,
            "variance": 635.6771451
          },
          {
            "average": 1.157293221,
            "count": 114436,
            "maximum": 1.526250367,
            "minimum": 0.866250367,
            "name": "Z",
            "position": 2,
            "stddev": 0.08086075939,
            "variance": 0.00653846241
          },
          {
            "average": 14543.16832,
            "count": 114436,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11026.45323,
            "variance": 121582670.9
          },
          {
            "average": 1,
            "count": 114436,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 114436,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5079869971,
            "count": 114436,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999383882,
            "variance": 0.249938392
          },
          {
            "average": 0.0008738508861,
            "count": 114436,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02954817931,
            "variance": 0.0008730949003
          },
          {
            "average": 7.173686602,
            "count": 114436,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.961136549,
            "variance": 8.768329664
          },
          {
            "average": -2.0358677,
            "count": 114436,
            "maximum": 16.21800041,
            "minimum": -13.22399998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.807625827,
            "variance": 60.95902106
          },
          {
            "average": 0.4754710056,
            "count": 114436,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499400148,
            "variance": 0.2494005078
          },
          {
            "average": 404.8540844,
            "count": 114436,
            "maximum": 406,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6504617271,
            "variance": 0.4231004584
          },
          {
            "average": 220414384.9,
            "count": 114436,
            "maximum": 220415131.1,
            "minimum": 220413994.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 356.6576301,
            "variance": 127204.6651
          },
          {
            "average": 0.4754710056,
            "count": 114436,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499400148,
            "variance": 0.2494005078
          },
          {
            "average": 0,
            "count": 114436,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 114436,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 114436,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1123510084,
            "count": 114436,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3157991938,
            "variance": 0.09972913081
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94866.49063,
          2374513.573,
          0.866250367,
          -94645.97063,
          2374625.073,
          1.526250367
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94866.49063038206,
                2374513.5730554657,
                0.866250367019554
              ],
              [
                -94866.49063038206,
                2374625.0730554657,
                0.866250367019554
              ],
              [
                -94645.97063038207,
                2374625.0730554657,
                1.526250367019554
              ],
              [
                -94645.97063038207,
                2374513.5730554657,
                1.526250367019554
              ],
              [
                -94866.49063038206,
                2374513.5730554657,
                0.866250367019554
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:12:11+00:00",
        "end_time": "2018-09-08T03:53:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2371.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2371.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2371.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2371.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5919849,
            71.35293173,
            0.866250367,
            -156.5858473,
            71.35403472,
            1.526250367
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5918660534421,
                  71.35293172624048,
                  0.866250367019554
                ],
                [
                  -156.5919848889301,
                  71.35395572828246,
                  0.866250367019554
                ],
                [
                  -156.58596583796057,
                  71.35403472043626,
                  1.526250367019554
                ],
                [
                  -156.58584727787098,
                  71.3530107142222,
                  1.526250367019554
                ],
                [
                  -156.5918660534421,
                  71.35293172624048,
                  0.866250367019554
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2371.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2371.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:12:11Z",
            "pc:count": 114436,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94720.26806,
                "count": 114436,
                "maximum": -94645.97063,
                "minimum": -94866.49063,
                "name": "X",
                "position": 0,
                "stddev": 50.531597,
                "variance": 2553.442296
              },
              {
                "average": 2374555.815,
                "count": 114436,
                "maximum": 2374625.073,
                "minimum": 2374513.573,
                "name": "Y",
                "position": 1,
                "stddev": 25.2126386,
                "variance": 635.6771451
              },
              {
                "average": 1.157293221,
                "count": 114436,
                "maximum": 1.526250367,
                "minimum": 0.866250367,
                "name": "Z",
                "position": 2,
                "stddev": 0.08086075939,
                "variance": 0.00653846241
              },
              {
                "average": 14543.16832,
                "count": 114436,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11026.45323,
                "variance": 121582670.9
              },
              {
                "average": 1,
                "count": 114436,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 114436,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5079869971,
                "count": 114436,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999383882,
                "variance": 0.249938392
              },
              {
                "average": 0.0008738508861,
                "count": 114436,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02954817931,
                "variance": 0.0008730949003
              },
              {
                "average": 7.173686602,
                "count": 114436,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.961136549,
                "variance": 8.768329664
              },
              {
                "average": -2.0358677,
                "count": 114436,
                "maximum": 16.21800041,
                "minimum": -13.22399998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.807625827,
                "variance": 60.95902106
              },
              {
                "average": 0.4754710056,
                "count": 114436,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499400148,
                "variance": 0.2494005078
              },
              {
                "average": 404.8540844,
                "count": 114436,
                "maximum": 406,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6504617271,
                "variance": 0.4231004584
              },
              {
                "average": 220414384.9,
                "count": 114436,
                "maximum": 220415131.1,
                "minimum": 220413994.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 356.6576301,
                "variance": 127204.6651
              },
              {
                "average": 0.4754710056,
                "count": 114436,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499400148,
                "variance": 0.2494005078
              },
              {
                "average": 0,
                "count": 114436,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 114436,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 114436,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1123510084,
                "count": 114436,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3157991938,
                "variance": 0.09972913081
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94866.49063,
              2374513.573,
              0.866250367,
              -94645.97063,
              2374625.073,
              1.526250367
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94866.49063038206,
                    2374513.5730554657,
                    0.866250367019554
                  ],
                  [
                    -94866.49063038206,
                    2374625.0730554657,
                    0.866250367019554
                  ],
                  [
                    -94645.97063038207,
                    2374625.0730554657,
                    1.526250367019554
                  ],
                  [
                    -94645.97063038207,
                    2374513.5730554657,
                    1.526250367019554
                  ],
                  [
                    -94866.49063038206,
                    2374513.5730554657,
                    0.866250367019554
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:12:11+00:00",
            "end_time": "2018-09-08T03:53:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2318.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6133710288103,
              71.32835469365918,
              0.951355177993991
            ],
            [
              -156.61387938141362,
              71.33270252371362,
              0.951355177993991
            ],
            [
              -156.6003552271733,
              71.33288139925735,
              4.79135517799399
            ],
            [
              -156.59984949938382,
              71.32853352914543,
              4.79135517799399
            ],
            [
              -156.6133710288103,
              71.32835469365918,
              0.951355177993991
            ]
          ]
        ]
      },
      "bbox": [
        -156.6138794,
        71.32835469,
        0.951355178,
        -156.5998495,
        71.3328814,
        4.791355178
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:15Z",
        "pc:count": 1958945,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95462.16991,
            "count": 1958945,
            "maximum": -95262.45337,
            "minimum": -95758.41337,
            "name": "X",
            "position": 0,
            "stddev": 131.5164983,
            "variance": 17296.58934
          },
          {
            "average": 2372091.014,
            "count": 1958945,
            "maximum": 2372345.688,
            "minimum": 2371872.188,
            "name": "Y",
            "position": 1,
            "stddev": 131.0183051,
            "variance": 17165.79628
          },
          {
            "average": 1.999536306,
            "count": 1958945,
            "maximum": 4.791355178,
            "minimum": 0.951355178,
            "name": "Z",
            "position": 2,
            "stddev": 0.8707313113,
            "variance": 0.7581730164
          },
          {
            "average": 31271.35591,
            "count": 1958945,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17023.23928,
            "variance": 289790675.4
          },
          {
            "average": 1,
            "count": 1958945,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1958945,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.504328095,
            "count": 1958945,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999813949,
            "variance": 0.2499813952
          },
          {
            "average": 0.0005263036992,
            "count": 1958945,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0229352779,
            "variance": 0.0005260269721
          },
          {
            "average": 3.576914615,
            "count": 1958945,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.450182025,
            "variance": 11.90375601
          },
          {
            "average": -0.9880027955,
            "count": 1958945,
            "maximum": 16.37400055,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.067407077,
            "variance": 82.21787109
          },
          {
            "average": 0.4934089523,
            "count": 1958945,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999566838,
            "variance": 0.2499566857
          },
          {
            "average": 408.7246681,
            "count": 1958945,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8303291256,
            "variance": 0.6894464568
          },
          {
            "average": 220416597.5,
            "count": 1958945,
            "maximum": 220417355.7,
            "minimum": 220415553.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 471.3047516,
            "variance": 222128.1688
          },
          {
            "average": 0.4934089523,
            "count": 1958945,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999566838,
            "variance": 0.2499566857
          },
          {
            "average": 0,
            "count": 1958945,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1958945,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1958945,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1238370654,
            "count": 1958945,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3293956618,
            "variance": 0.108501502
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95758.41337,
          2371872.188,
          0.951355178,
          -95262.45337,
          2372345.688,
          4.791355178
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95758.41337294348,
                2371872.1875022426,
                0.951355177993991
              ],
              [
                -95758.41337294348,
                2372345.6875022426,
                0.951355177993991
              ],
              [
                -95262.45337294349,
                2372345.6875022426,
                4.79135517799399
              ],
              [
                -95262.45337294349,
                2371872.1875022426,
                4.79135517799399
              ],
              [
                -95758.41337294348,
                2371872.1875022426,
                0.951355177993991
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:15+00:00",
        "end_time": "2018-09-08T04:19:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2318.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2318.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2318.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2318.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6138794,
            71.32835469,
            0.951355178,
            -156.5998495,
            71.3328814,
            4.791355178
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6133710288103,
                  71.32835469365918,
                  0.951355177993991
                ],
                [
                  -156.61387938141362,
                  71.33270252371362,
                  0.951355177993991
                ],
                [
                  -156.6003552271733,
                  71.33288139925735,
                  4.79135517799399
                ],
                [
                  -156.59984949938382,
                  71.32853352914543,
                  4.79135517799399
                ],
                [
                  -156.6133710288103,
                  71.32835469365918,
                  0.951355177993991
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2318.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2318.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:15Z",
            "pc:count": 1958945,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95462.16991,
                "count": 1958945,
                "maximum": -95262.45337,
                "minimum": -95758.41337,
                "name": "X",
                "position": 0,
                "stddev": 131.5164983,
                "variance": 17296.58934
              },
              {
                "average": 2372091.014,
                "count": 1958945,
                "maximum": 2372345.688,
                "minimum": 2371872.188,
                "name": "Y",
                "position": 1,
                "stddev": 131.0183051,
                "variance": 17165.79628
              },
              {
                "average": 1.999536306,
                "count": 1958945,
                "maximum": 4.791355178,
                "minimum": 0.951355178,
                "name": "Z",
                "position": 2,
                "stddev": 0.8707313113,
                "variance": 0.7581730164
              },
              {
                "average": 31271.35591,
                "count": 1958945,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17023.23928,
                "variance": 289790675.4
              },
              {
                "average": 1,
                "count": 1958945,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1958945,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.504328095,
                "count": 1958945,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999813949,
                "variance": 0.2499813952
              },
              {
                "average": 0.0005263036992,
                "count": 1958945,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0229352779,
                "variance": 0.0005260269721
              },
              {
                "average": 3.576914615,
                "count": 1958945,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.450182025,
                "variance": 11.90375601
              },
              {
                "average": -0.9880027955,
                "count": 1958945,
                "maximum": 16.37400055,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.067407077,
                "variance": 82.21787109
              },
              {
                "average": 0.4934089523,
                "count": 1958945,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999566838,
                "variance": 0.2499566857
              },
              {
                "average": 408.7246681,
                "count": 1958945,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8303291256,
                "variance": 0.6894464568
              },
              {
                "average": 220416597.5,
                "count": 1958945,
                "maximum": 220417355.7,
                "minimum": 220415553.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 471.3047516,
                "variance": 222128.1688
              },
              {
                "average": 0.4934089523,
                "count": 1958945,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999566838,
                "variance": 0.2499566857
              },
              {
                "average": 0,
                "count": 1958945,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1958945,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1958945,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1238370654,
                "count": 1958945,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3293956618,
                "variance": 0.108501502
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95758.41337,
              2371872.188,
              0.951355178,
              -95262.45337,
              2372345.688,
              4.791355178
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95758.41337294348,
                    2371872.1875022426,
                    0.951355177993991
                  ],
                  [
                    -95758.41337294348,
                    2372345.6875022426,
                    0.951355177993991
                  ],
                  [
                    -95262.45337294349,
                    2372345.6875022426,
                    4.79135517799399
                  ],
                  [
                    -95262.45337294349,
                    2371872.1875022426,
                    4.79135517799399
                  ],
                  [
                    -95758.41337294348,
                    2371872.1875022426,
                    0.951355177993991
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:15+00:00",
            "end_time": "2018-09-08T04:19:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2372.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58600297923618,
              71.35274525901806,
              0.864480495447681
            ],
            [
              -156.58638115174338,
              71.3560110767432,
              0.864480495447681
            ],
            [
              -156.57299280725783,
              71.3561861362454,
              1.564480495447681
            ],
            [
              -156.57261658842333,
              71.35292028903203,
              1.564480495447681
            ],
            [
              -156.58600297923618,
              71.35274525901806,
              0.864480495447681
            ]
          ]
        ]
      },
      "bbox": [
        -156.5863812,
        71.35274526,
        0.8644804954,
        -156.5726166,
        71.35618614,
        1.564480495
      ],
      "properties": {
        "datetime": "2018-09-08T04:18:36Z",
        "pc:count": 938075,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94378.83348,
            "count": 938075,
            "maximum": -94162.33104,
            "minimum": -94652.79104,
            "name": "X",
            "position": 0,
            "stddev": 131.9060096,
            "variance": 17399.19537
          },
          {
            "average": 2374620.833,
            "count": 938075,
            "maximum": 2374840.534,
            "minimum": 2374484.934,
            "name": "Y",
            "position": 1,
            "stddev": 79.70955808,
            "variance": 6353.613649
          },
          {
            "average": 1.158293474,
            "count": 938075,
            "maximum": 1.564480495,
            "minimum": 0.8644804954,
            "name": "Z",
            "position": 2,
            "stddev": 0.07779672296,
            "variance": 0.006052330103
          },
          {
            "average": 14396.95574,
            "count": 938075,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10628.84432,
            "variance": 112972331.7
          },
          {
            "average": 1,
            "count": 938075,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 938075,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4929840365,
            "count": 938075,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999510403,
            "variance": 0.2499510427
          },
          {
            "average": 0.0005394024998,
            "count": 938075,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02321878807,
            "variance": 0.0005391121194
          },
          {
            "average": 7.44367881,
            "count": 938075,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.676050532,
            "variance": 7.161246452
          },
          {
            "average": 2.772718791,
            "count": 938075,
            "maximum": 16.01399994,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.320324011,
            "variance": 53.58714363
          },
          {
            "average": 0.4856669243,
            "count": 938075,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997947871,
            "variance": 0.2497948292
          },
          {
            "average": 405.2417547,
            "count": 938075,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6651010931,
            "variance": 0.442359464
          },
          {
            "average": 220414611.1,
            "count": 938075,
            "maximum": 220415516,
            "minimum": 220413997.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 417.5236999,
            "variance": 174326.04
          },
          {
            "average": 0.4856669243,
            "count": 938075,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997947871,
            "variance": 0.2497948292
          },
          {
            "average": 0,
            "count": 938075,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 938075,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 938075,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04347093782,
            "count": 938075,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2039148345,
            "variance": 0.04158125972
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94652.79104,
          2374484.934,
          0.8644804954,
          -94162.33104,
          2374840.534,
          1.564480495
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94652.79104313912,
                2374484.9342658613,
                0.864480495447681
              ],
              [
                -94652.79104313912,
                2374840.534265861,
                0.864480495447681
              ],
              [
                -94162.33104313913,
                2374840.534265861,
                1.564480495447681
              ],
              [
                -94162.33104313913,
                2374484.9342658613,
                1.564480495447681
              ],
              [
                -94652.79104313912,
                2374484.9342658613,
                0.864480495447681
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:18:36+00:00",
        "end_time": "2018-09-08T03:53:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2372.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2372.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2372.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2372.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5863812,
            71.35274526,
            0.8644804954,
            -156.5726166,
            71.35618614,
            1.564480495
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58600297923618,
                  71.35274525901806,
                  0.864480495447681
                ],
                [
                  -156.58638115174338,
                  71.3560110767432,
                  0.864480495447681
                ],
                [
                  -156.57299280725783,
                  71.3561861362454,
                  1.564480495447681
                ],
                [
                  -156.57261658842333,
                  71.35292028903203,
                  1.564480495447681
                ],
                [
                  -156.58600297923618,
                  71.35274525901806,
                  0.864480495447681
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2372.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2372.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:18:36Z",
            "pc:count": 938075,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94378.83348,
                "count": 938075,
                "maximum": -94162.33104,
                "minimum": -94652.79104,
                "name": "X",
                "position": 0,
                "stddev": 131.9060096,
                "variance": 17399.19537
              },
              {
                "average": 2374620.833,
                "count": 938075,
                "maximum": 2374840.534,
                "minimum": 2374484.934,
                "name": "Y",
                "position": 1,
                "stddev": 79.70955808,
                "variance": 6353.613649
              },
              {
                "average": 1.158293474,
                "count": 938075,
                "maximum": 1.564480495,
                "minimum": 0.8644804954,
                "name": "Z",
                "position": 2,
                "stddev": 0.07779672296,
                "variance": 0.006052330103
              },
              {
                "average": 14396.95574,
                "count": 938075,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10628.84432,
                "variance": 112972331.7
              },
              {
                "average": 1,
                "count": 938075,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 938075,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4929840365,
                "count": 938075,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999510403,
                "variance": 0.2499510427
              },
              {
                "average": 0.0005394024998,
                "count": 938075,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02321878807,
                "variance": 0.0005391121194
              },
              {
                "average": 7.44367881,
                "count": 938075,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.676050532,
                "variance": 7.161246452
              },
              {
                "average": 2.772718791,
                "count": 938075,
                "maximum": 16.01399994,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.320324011,
                "variance": 53.58714363
              },
              {
                "average": 0.4856669243,
                "count": 938075,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997947871,
                "variance": 0.2497948292
              },
              {
                "average": 405.2417547,
                "count": 938075,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6651010931,
                "variance": 0.442359464
              },
              {
                "average": 220414611.1,
                "count": 938075,
                "maximum": 220415516,
                "minimum": 220413997.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 417.5236999,
                "variance": 174326.04
              },
              {
                "average": 0.4856669243,
                "count": 938075,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997947871,
                "variance": 0.2497948292
              },
              {
                "average": 0,
                "count": 938075,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 938075,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 938075,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04347093782,
                "count": 938075,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2039148345,
                "variance": 0.04158125972
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94652.79104,
              2374484.934,
              0.8644804954,
              -94162.33104,
              2374840.534,
              1.564480495
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94652.79104313912,
                    2374484.9342658613,
                    0.864480495447681
                  ],
                  [
                    -94652.79104313912,
                    2374840.534265861,
                    0.864480495447681
                  ],
                  [
                    -94162.33104313913,
                    2374840.534265861,
                    1.564480495447681
                  ],
                  [
                    -94162.33104313913,
                    2374484.9342658613,
                    1.564480495447681
                  ],
                  [
                    -94652.79104313912,
                    2374484.9342658613,
                    0.864480495447681
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:18:36+00:00",
            "end_time": "2018-09-08T03:53:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2292.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60117735443694,
              71.3200666728004,
              3.739947076520067
            ],
            [
              -156.60168329846158,
              71.32441557487464,
              3.739947076520067
            ],
            [
              -156.58815915037357,
              71.32459366865048,
              6.419947076520066
            ],
            [
              -156.58765583102178,
              71.32024472670315,
              6.419947076520066
            ],
            [
              -156.60117735443694,
              71.3200666728004,
              3.739947076520067
            ]
          ]
        ]
      },
      "bbox": [
        -156.6016833,
        71.32006667,
        3.739947077,
        -156.5876558,
        71.32459367,
        6.419947077
      ],
      "properties": {
        "datetime": "2018-09-08T05:15:34Z",
        "pc:count": 3151139,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95103.60746,
            "count": 3151139,
            "maximum": -94851.02343,
            "minimum": -95347.16343,
            "name": "X",
            "position": 0,
            "stddev": 134.026636,
            "variance": 17963.13916
          },
          {
            "average": 2371197.46,
            "count": 3151139,
            "maximum": 2371427.032,
            "minimum": 2370953.392,
            "name": "Y",
            "position": 1,
            "stddev": 128.5946717,
            "variance": 16536.58958
          },
          {
            "average": 4.415418219,
            "count": 3151139,
            "maximum": 6.419947077,
            "minimum": 3.739947077,
            "name": "Z",
            "position": 2,
            "stddev": 0.4271739626,
            "variance": 0.1824775943
          },
          {
            "average": 38972.80756,
            "count": 3151139,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12052.62388,
            "variance": 145265742.3
          },
          {
            "average": 1,
            "count": 3151139,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3151139,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4998557664,
            "count": 3151139,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000585,
            "variance": 0.2500000585
          },
          {
            "average": 0.0004614204578,
            "count": 3151139,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02147574668,
            "variance": 0.0004612076953
          },
          {
            "average": 1.280316102,
            "count": 3151139,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4492702671,
            "variance": 0.2018437729
          },
          {
            "average": -0.5237507367,
            "count": 3151139,
            "maximum": 16.33799934,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.43574444,
            "variance": 108.904762
          },
          {
            "average": 0.471523154,
            "count": 3151139,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991884898,
            "variance": 0.2491891483
          },
          {
            "average": 411.2272153,
            "count": 3151139,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9470571136,
            "variance": 0.8969171764
          },
          {
            "average": 220417998.6,
            "count": 3151139,
            "maximum": 220418934.9,
            "minimum": 220416710.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 521.7349687,
            "variance": 272207.3775
          },
          {
            "average": 0.471523154,
            "count": 3151139,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991884898,
            "variance": 0.2491891483
          },
          {
            "average": 0,
            "count": 3151139,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3151139,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3151139,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2309082525,
            "count": 3151139,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4214139151,
            "variance": 0.1775896878
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95347.16343,
          2370953.392,
          3.739947077,
          -94851.02343,
          2371427.032,
          6.419947077
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95347.1634301756,
                2370953.392237263,
                3.739947076520067
              ],
              [
                -95347.1634301756,
                2371427.0322372625,
                3.739947076520067
              ],
              [
                -94851.02343017558,
                2371427.0322372625,
                6.419947076520066
              ],
              [
                -94851.02343017558,
                2370953.392237263,
                6.419947076520066
              ],
              [
                -95347.1634301756,
                2370953.392237263,
                3.739947076520067
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:15:34+00:00",
        "end_time": "2018-09-08T04:38:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2292.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2292.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2292.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2292.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6016833,
            71.32006667,
            3.739947077,
            -156.5876558,
            71.32459367,
            6.419947077
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60117735443694,
                  71.3200666728004,
                  3.739947076520067
                ],
                [
                  -156.60168329846158,
                  71.32441557487464,
                  3.739947076520067
                ],
                [
                  -156.58815915037357,
                  71.32459366865048,
                  6.419947076520066
                ],
                [
                  -156.58765583102178,
                  71.32024472670315,
                  6.419947076520066
                ],
                [
                  -156.60117735443694,
                  71.3200666728004,
                  3.739947076520067
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2292.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2292.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:15:34Z",
            "pc:count": 3151139,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95103.60746,
                "count": 3151139,
                "maximum": -94851.02343,
                "minimum": -95347.16343,
                "name": "X",
                "position": 0,
                "stddev": 134.026636,
                "variance": 17963.13916
              },
              {
                "average": 2371197.46,
                "count": 3151139,
                "maximum": 2371427.032,
                "minimum": 2370953.392,
                "name": "Y",
                "position": 1,
                "stddev": 128.5946717,
                "variance": 16536.58958
              },
              {
                "average": 4.415418219,
                "count": 3151139,
                "maximum": 6.419947077,
                "minimum": 3.739947077,
                "name": "Z",
                "position": 2,
                "stddev": 0.4271739626,
                "variance": 0.1824775943
              },
              {
                "average": 38972.80756,
                "count": 3151139,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12052.62388,
                "variance": 145265742.3
              },
              {
                "average": 1,
                "count": 3151139,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3151139,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4998557664,
                "count": 3151139,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000585,
                "variance": 0.2500000585
              },
              {
                "average": 0.0004614204578,
                "count": 3151139,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02147574668,
                "variance": 0.0004612076953
              },
              {
                "average": 1.280316102,
                "count": 3151139,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4492702671,
                "variance": 0.2018437729
              },
              {
                "average": -0.5237507367,
                "count": 3151139,
                "maximum": 16.33799934,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.43574444,
                "variance": 108.904762
              },
              {
                "average": 0.471523154,
                "count": 3151139,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991884898,
                "variance": 0.2491891483
              },
              {
                "average": 411.2272153,
                "count": 3151139,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9470571136,
                "variance": 0.8969171764
              },
              {
                "average": 220417998.6,
                "count": 3151139,
                "maximum": 220418934.9,
                "minimum": 220416710.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 521.7349687,
                "variance": 272207.3775
              },
              {
                "average": 0.471523154,
                "count": 3151139,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991884898,
                "variance": 0.2491891483
              },
              {
                "average": 0,
                "count": 3151139,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3151139,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3151139,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2309082525,
                "count": 3151139,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4214139151,
                "variance": 0.1775896878
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95347.16343,
              2370953.392,
              3.739947077,
              -94851.02343,
              2371427.032,
              6.419947077
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95347.1634301756,
                    2370953.392237263,
                    3.739947076520067
                  ],
                  [
                    -95347.1634301756,
                    2371427.0322372625,
                    3.739947076520067
                  ],
                  [
                    -94851.02343017558,
                    2371427.0322372625,
                    6.419947076520066
                  ],
                  [
                    -94851.02343017558,
                    2370953.392237263,
                    6.419947076520066
                  ],
                  [
                    -95347.1634301756,
                    2370953.392237263,
                    3.739947076520067
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:15:34+00:00",
            "end_time": "2018-09-08T04:38:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2219.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69175947786084,
              71.3043219733686,
              1.411345028257818
            ],
            [
              -156.69228259659434,
              71.30866962395218,
              1.411345028257818
            ],
            [
              -156.67877686461296,
              71.3088538018981,
              21.45134502825782
            ],
            [
              -156.67825636437638,
              71.30450611012854,
              21.45134502825782
            ],
            [
              -156.69175947786084,
              71.3043219733686,
              1.411345028257818
            ]
          ]
        ]
      },
      "bbox": [
        -156.6922826,
        71.30432197,
        1.411345028,
        -156.6782564,
        71.3088538,
        21.45134503
      ],
      "properties": {
        "datetime": "2018-09-08T04:58:14Z",
        "pc:count": 2410161,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98460.02247,
            "count": 2410161,
            "maximum": -98239.2931,
            "minimum": -98735.1331,
            "name": "X",
            "position": 0,
            "stddev": 127.502534,
            "variance": 16256.89617
          },
          {
            "average": 2369596.5,
            "count": 2410161,
            "maximum": 2369847.132,
            "minimum": 2369373.552,
            "name": "Y",
            "position": 1,
            "stddev": 120.2636574,
            "variance": 14463.3473
          },
          {
            "average": 4.482073428,
            "count": 2410161,
            "maximum": 21.45134503,
            "minimum": 1.411345028,
            "name": "Z",
            "position": 2,
            "stddev": 1.445560617,
            "variance": 2.089645499
          },
          {
            "average": 40703.49071,
            "count": 2410161,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12684.07868,
            "variance": 160885852
          },
          {
            "average": 1.004904652,
            "count": 2410161,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07072893056,
            "variance": 0.005002581618
          },
          {
            "average": 1.009809718,
            "count": 2410161,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1003964261,
            "variance": 0.01007944238
          },
          {
            "average": 0.501916262,
            "count": 2410161,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999964317,
            "variance": 0.2499964317
          },
          {
            "average": 0.000452666855,
            "count": 2410161,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02127115736,
            "variance": 0.0004524621355
          },
          {
            "average": 1.942031673,
            "count": 2410161,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.126081939,
            "variance": 4.520224413
          },
          {
            "average": -0.007662294222,
            "count": 2410161,
            "maximum": 16.37999916,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.03212191,
            "variance": 100.64347
          },
          {
            "average": 0.4983704408,
            "count": 2410161,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999974483,
            "variance": 0.2499974483
          },
          {
            "average": 408.9667354,
            "count": 2410161,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8485122159,
            "variance": 0.7199729805
          },
          {
            "average": 220416716.7,
            "count": 2410161,
            "maximum": 220417894.8,
            "minimum": 220415621.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 483.4652114,
            "variance": 233738.6106
          },
          {
            "average": 0.4983704408,
            "count": 2410161,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999974483,
            "variance": 0.2499974483
          },
          {
            "average": 0,
            "count": 2410161,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2410161,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2410161,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2054339938,
            "count": 2410161,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4040184844,
            "variance": 0.1632309357
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98735.1331,
          2369373.552,
          1.411345028,
          -98239.2931,
          2369847.132,
          21.45134503
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98735.13310212597,
                2369373.552208885,
                1.411345028257818
              ],
              [
                -98735.13310212597,
                2369847.132208885,
                1.411345028257818
              ],
              [
                -98239.29310212597,
                2369847.132208885,
                21.45134502825782
              ],
              [
                -98239.29310212597,
                2369373.552208885,
                21.45134502825782
              ],
              [
                -98735.13310212597,
                2369373.552208885,
                1.411345028257818
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:58:14+00:00",
        "end_time": "2018-09-08T04:20:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2219.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2219.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2219.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2219.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6922826,
            71.30432197,
            1.411345028,
            -156.6782564,
            71.3088538,
            21.45134503
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69175947786084,
                  71.3043219733686,
                  1.411345028257818
                ],
                [
                  -156.69228259659434,
                  71.30866962395218,
                  1.411345028257818
                ],
                [
                  -156.67877686461296,
                  71.3088538018981,
                  21.45134502825782
                ],
                [
                  -156.67825636437638,
                  71.30450611012854,
                  21.45134502825782
                ],
                [
                  -156.69175947786084,
                  71.3043219733686,
                  1.411345028257818
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2219.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2219.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:58:14Z",
            "pc:count": 2410161,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98460.02247,
                "count": 2410161,
                "maximum": -98239.2931,
                "minimum": -98735.1331,
                "name": "X",
                "position": 0,
                "stddev": 127.502534,
                "variance": 16256.89617
              },
              {
                "average": 2369596.5,
                "count": 2410161,
                "maximum": 2369847.132,
                "minimum": 2369373.552,
                "name": "Y",
                "position": 1,
                "stddev": 120.2636574,
                "variance": 14463.3473
              },
              {
                "average": 4.482073428,
                "count": 2410161,
                "maximum": 21.45134503,
                "minimum": 1.411345028,
                "name": "Z",
                "position": 2,
                "stddev": 1.445560617,
                "variance": 2.089645499
              },
              {
                "average": 40703.49071,
                "count": 2410161,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12684.07868,
                "variance": 160885852
              },
              {
                "average": 1.004904652,
                "count": 2410161,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07072893056,
                "variance": 0.005002581618
              },
              {
                "average": 1.009809718,
                "count": 2410161,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1003964261,
                "variance": 0.01007944238
              },
              {
                "average": 0.501916262,
                "count": 2410161,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999964317,
                "variance": 0.2499964317
              },
              {
                "average": 0.000452666855,
                "count": 2410161,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02127115736,
                "variance": 0.0004524621355
              },
              {
                "average": 1.942031673,
                "count": 2410161,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.126081939,
                "variance": 4.520224413
              },
              {
                "average": -0.007662294222,
                "count": 2410161,
                "maximum": 16.37999916,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.03212191,
                "variance": 100.64347
              },
              {
                "average": 0.4983704408,
                "count": 2410161,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999974483,
                "variance": 0.2499974483
              },
              {
                "average": 408.9667354,
                "count": 2410161,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8485122159,
                "variance": 0.7199729805
              },
              {
                "average": 220416716.7,
                "count": 2410161,
                "maximum": 220417894.8,
                "minimum": 220415621.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 483.4652114,
                "variance": 233738.6106
              },
              {
                "average": 0.4983704408,
                "count": 2410161,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999974483,
                "variance": 0.2499974483
              },
              {
                "average": 0,
                "count": 2410161,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2410161,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2410161,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2054339938,
                "count": 2410161,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4040184844,
                "variance": 0.1632309357
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98735.1331,
              2369373.552,
              1.411345028,
              -98239.2931,
              2369847.132,
              21.45134503
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98735.13310212597,
                    2369373.552208885,
                    1.411345028257818
                  ],
                  [
                    -98735.13310212597,
                    2369847.132208885,
                    1.411345028257818
                  ],
                  [
                    -98239.29310212597,
                    2369847.132208885,
                    21.45134502825782
                  ],
                  [
                    -98239.29310212597,
                    2369373.552208885,
                    21.45134502825782
                  ],
                  [
                    -98735.13310212597,
                    2369373.552208885,
                    1.411345028257818
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:58:14+00:00",
            "end_time": "2018-09-08T04:20:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2340.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6127844154537,
              71.33654794555207,
              -13.223364511200353
            ],
            [
              -156.61329286175803,
              71.34089620319254,
              -13.223364511200353
            ],
            [
              -156.59976101816406,
              71.34107508428798,
              3.716635488799648
            ],
            [
              -156.59925519924207,
              71.33672678656578,
              3.716635488799648
            ],
            [
              -156.6127844154537,
              71.33654794555207,
              -13.223364511200353
            ]
          ]
        ]
      },
      "bbox": [
        -156.6132929,
        71.33654795,
        -13.22336451,
        -156.5992552,
        71.34107508,
        3.716635489
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:16Z",
        "pc:count": 2384242,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95428.00538,
            "count": 2384242,
            "maximum": -95205.8018,
            "minimum": -95701.8618,
            "name": "X",
            "position": 0,
            "stddev": 132.4266954,
            "variance": 17536.82964
          },
          {
            "average": 2373012.152,
            "count": 2384242,
            "maximum": 2373235.755,
            "minimum": 2372762.235,
            "name": "Y",
            "position": 1,
            "stddev": 125.4852801,
            "variance": 15746.55553
          },
          {
            "average": 1.363802635,
            "count": 2384242,
            "maximum": 3.716635489,
            "minimum": -13.22336451,
            "name": "Z",
            "position": 2,
            "stddev": 0.2987714518,
            "variance": 0.08926438041
          },
          {
            "average": 27731.51026,
            "count": 2384242,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16062.28238,
            "variance": 257996915.4
          },
          {
            "average": 1.000000419,
            "count": 2384242,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006476268307,
            "variance": 4.194205118e-07
          },
          {
            "average": 1.000000839,
            "count": 2384242,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009158824553,
            "variance": 8.388406719e-07
          },
          {
            "average": 0.5022589989,
            "count": 2384242,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999950018,
            "variance": 0.2499950018
          },
          {
            "average": 0.0004693315528,
            "count": 2384242,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02165898145,
            "variance": 0.0004691114774
          },
          {
            "average": 4.663632299,
            "count": 2384242,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.782257987,
            "variance": 14.30547548
          },
          {
            "average": 0.1092107554,
            "count": 2384242,
            "maximum": 16.34399986,
            "minimum": -16.36199951,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.156661037,
            "variance": 83.84444134
          },
          {
            "average": 0.5072496835,
            "count": 2384242,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999475442,
            "variance": 0.2499475469
          },
          {
            "average": 406.8993953,
            "count": 2384242,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8231602041,
            "variance": 0.6775927216
          },
          {
            "average": 220415554.9,
            "count": 2384242,
            "maximum": 220416696.1,
            "minimum": 220414415,
            "name": "GpsTime",
            "position": 12,
            "stddev": 467.1721274,
            "variance": 218249.7966
          },
          {
            "average": 0.5072496835,
            "count": 2384242,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999475442,
            "variance": 0.2499475469
          },
          {
            "average": 0,
            "count": 2384242,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2384242,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2384242,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.140304969,
            "count": 2384242,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3473032325,
            "variance": 0.1206195353
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95701.8618,
          2372762.235,
          -13.22336451,
          -95205.8018,
          2373235.755,
          3.716635489
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95701.86179695018,
                2372762.2345407642,
                -13.223364511200353
              ],
              [
                -95701.86179695018,
                2373235.754540764,
                -13.223364511200353
              ],
              [
                -95205.80179695018,
                2373235.754540764,
                3.716635488799648
              ],
              [
                -95205.80179695018,
                2372762.2345407642,
                3.716635488799648
              ],
              [
                -95701.86179695018,
                2372762.2345407642,
                -13.223364511200353
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:16+00:00",
        "end_time": "2018-09-08T04:00:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2340.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2340.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2340.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2340.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6132929,
            71.33654795,
            -13.22336451,
            -156.5992552,
            71.34107508,
            3.716635489
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6127844154537,
                  71.33654794555207,
                  -13.223364511200353
                ],
                [
                  -156.61329286175803,
                  71.34089620319254,
                  -13.223364511200353
                ],
                [
                  -156.59976101816406,
                  71.34107508428798,
                  3.716635488799648
                ],
                [
                  -156.59925519924207,
                  71.33672678656578,
                  3.716635488799648
                ],
                [
                  -156.6127844154537,
                  71.33654794555207,
                  -13.223364511200353
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2340.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2340.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:16Z",
            "pc:count": 2384242,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95428.00538,
                "count": 2384242,
                "maximum": -95205.8018,
                "minimum": -95701.8618,
                "name": "X",
                "position": 0,
                "stddev": 132.4266954,
                "variance": 17536.82964
              },
              {
                "average": 2373012.152,
                "count": 2384242,
                "maximum": 2373235.755,
                "minimum": 2372762.235,
                "name": "Y",
                "position": 1,
                "stddev": 125.4852801,
                "variance": 15746.55553
              },
              {
                "average": 1.363802635,
                "count": 2384242,
                "maximum": 3.716635489,
                "minimum": -13.22336451,
                "name": "Z",
                "position": 2,
                "stddev": 0.2987714518,
                "variance": 0.08926438041
              },
              {
                "average": 27731.51026,
                "count": 2384242,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16062.28238,
                "variance": 257996915.4
              },
              {
                "average": 1.000000419,
                "count": 2384242,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006476268307,
                "variance": 4.194205118e-07
              },
              {
                "average": 1.000000839,
                "count": 2384242,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009158824553,
                "variance": 8.388406719e-07
              },
              {
                "average": 0.5022589989,
                "count": 2384242,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999950018,
                "variance": 0.2499950018
              },
              {
                "average": 0.0004693315528,
                "count": 2384242,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02165898145,
                "variance": 0.0004691114774
              },
              {
                "average": 4.663632299,
                "count": 2384242,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.782257987,
                "variance": 14.30547548
              },
              {
                "average": 0.1092107554,
                "count": 2384242,
                "maximum": 16.34399986,
                "minimum": -16.36199951,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.156661037,
                "variance": 83.84444134
              },
              {
                "average": 0.5072496835,
                "count": 2384242,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999475442,
                "variance": 0.2499475469
              },
              {
                "average": 406.8993953,
                "count": 2384242,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8231602041,
                "variance": 0.6775927216
              },
              {
                "average": 220415554.9,
                "count": 2384242,
                "maximum": 220416696.1,
                "minimum": 220414415,
                "name": "GpsTime",
                "position": 12,
                "stddev": 467.1721274,
                "variance": 218249.7966
              },
              {
                "average": 0.5072496835,
                "count": 2384242,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999475442,
                "variance": 0.2499475469
              },
              {
                "average": 0,
                "count": 2384242,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2384242,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2384242,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.140304969,
                "count": 2384242,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3473032325,
                "variance": 0.1206195353
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95701.8618,
              2372762.235,
              -13.22336451,
              -95205.8018,
              2373235.755,
              3.716635489
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95701.86179695018,
                    2372762.2345407642,
                    -13.223364511200353
                  ],
                  [
                    -95701.86179695018,
                    2373235.754540764,
                    -13.223364511200353
                  ],
                  [
                    -95205.80179695018,
                    2373235.754540764,
                    3.716635488799648
                  ],
                  [
                    -95205.80179695018,
                    2372762.2345407642,
                    3.716635488799648
                  ],
                  [
                    -95701.86179695018,
                    2372762.2345407642,
                    -13.223364511200353
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:16+00:00",
            "end_time": "2018-09-08T04:00:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2391.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.3678880845556,
              71.35508804094042,
              0.922728298437285
            ],
            [
              -156.36834927788394,
              71.35943745039191,
              0.922728298437285
            ],
            [
              -156.35492011297157,
              71.35959816739421,
              2.162728298437285
            ],
            [
              -156.35446153033402,
              71.35524872188286,
              2.162728298437285
            ],
            [
              -156.3678880845556,
              71.35508804094042,
              0.922728298437285
            ]
          ]
        ]
      },
      "bbox": [
        -156.3683493,
        71.35508804,
        0.9227282984,
        -156.3544615,
        71.35959817,
        2.162728298
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:17Z",
        "pc:count": 1585327,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86412.26225,
            "count": 1585327,
            "maximum": -86171.98992,
            "minimum": -86663.80992,
            "name": "X",
            "position": 0,
            "stddev": 136.9470809,
            "variance": 18754.50298
          },
          {
            "average": 2374688.475,
            "count": 1585327,
            "maximum": 2374915.429,
            "minimum": 2374441.909,
            "name": "Y",
            "position": 1,
            "stddev": 128.5115091,
            "variance": 16515.20798
          },
          {
            "average": 1.189303466,
            "count": 1585327,
            "maximum": 2.162728298,
            "minimum": 0.9227282984,
            "name": "Z",
            "position": 2,
            "stddev": 0.1101712188,
            "variance": 0.01213769744
          },
          {
            "average": 17174.43412,
            "count": 1585327,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13051.07849,
            "variance": 170330649.9
          },
          {
            "average": 1,
            "count": 1585327,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1585327,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5065156905,
            "count": 1585327,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999577017,
            "variance": 0.2499577034
          },
          {
            "average": 0.0006818782497,
            "count": 1585327,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02610390242,
            "variance": 0.0006814137216
          },
          {
            "average": 7.700360872,
            "count": 1585327,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.498460931,
            "variance": 6.242307023
          },
          {
            "average": -1.625245647,
            "count": 1585327,
            "maximum": 16.51199913,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.251598689,
            "variance": 52.58568354
          },
          {
            "average": 0.4827981861,
            "count": 1585327,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997041676,
            "variance": 0.2497042551
          },
          {
            "average": 418.7195847,
            "count": 1585327,
            "maximum": 420,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7272769885,
            "variance": 0.528931818
          },
          {
            "average": 220422056.4,
            "count": 1585327,
            "maximum": 220422997.4,
            "minimum": 220420927.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 411.6421841,
            "variance": 169449.2877
          },
          {
            "average": 0.4827981861,
            "count": 1585327,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997041676,
            "variance": 0.2497042551
          },
          {
            "average": 0,
            "count": 1585327,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1585327,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1585327,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04564547251,
            "count": 1585327,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2087150949,
            "variance": 0.04356199083
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86663.80992,
          2374441.909,
          0.9227282984,
          -86171.98992,
          2374915.429,
          2.162728298
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86663.80991507936,
                2374441.90879636,
                0.922728298437285
              ],
              [
                -86663.80991507936,
                2374915.4287963593,
                0.922728298437285
              ],
              [
                -86171.98991507935,
                2374915.4287963593,
                2.162728298437285
              ],
              [
                -86171.98991507935,
                2374441.90879636,
                2.162728298437285
              ],
              [
                -86663.80991507936,
                2374441.90879636,
                0.922728298437285
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:17+00:00",
        "end_time": "2018-09-08T05:48:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2391.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2391.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2391.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2391.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3683493,
            71.35508804,
            0.9227282984,
            -156.3544615,
            71.35959817,
            2.162728298
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.3678880845556,
                  71.35508804094042,
                  0.922728298437285
                ],
                [
                  -156.36834927788394,
                  71.35943745039191,
                  0.922728298437285
                ],
                [
                  -156.35492011297157,
                  71.35959816739421,
                  2.162728298437285
                ],
                [
                  -156.35446153033402,
                  71.35524872188286,
                  2.162728298437285
                ],
                [
                  -156.3678880845556,
                  71.35508804094042,
                  0.922728298437285
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2391.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2391.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:17Z",
            "pc:count": 1585327,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86412.26225,
                "count": 1585327,
                "maximum": -86171.98992,
                "minimum": -86663.80992,
                "name": "X",
                "position": 0,
                "stddev": 136.9470809,
                "variance": 18754.50298
              },
              {
                "average": 2374688.475,
                "count": 1585327,
                "maximum": 2374915.429,
                "minimum": 2374441.909,
                "name": "Y",
                "position": 1,
                "stddev": 128.5115091,
                "variance": 16515.20798
              },
              {
                "average": 1.189303466,
                "count": 1585327,
                "maximum": 2.162728298,
                "minimum": 0.9227282984,
                "name": "Z",
                "position": 2,
                "stddev": 0.1101712188,
                "variance": 0.01213769744
              },
              {
                "average": 17174.43412,
                "count": 1585327,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13051.07849,
                "variance": 170330649.9
              },
              {
                "average": 1,
                "count": 1585327,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1585327,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5065156905,
                "count": 1585327,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999577017,
                "variance": 0.2499577034
              },
              {
                "average": 0.0006818782497,
                "count": 1585327,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02610390242,
                "variance": 0.0006814137216
              },
              {
                "average": 7.700360872,
                "count": 1585327,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.498460931,
                "variance": 6.242307023
              },
              {
                "average": -1.625245647,
                "count": 1585327,
                "maximum": 16.51199913,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.251598689,
                "variance": 52.58568354
              },
              {
                "average": 0.4827981861,
                "count": 1585327,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997041676,
                "variance": 0.2497042551
              },
              {
                "average": 418.7195847,
                "count": 1585327,
                "maximum": 420,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7272769885,
                "variance": 0.528931818
              },
              {
                "average": 220422056.4,
                "count": 1585327,
                "maximum": 220422997.4,
                "minimum": 220420927.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 411.6421841,
                "variance": 169449.2877
              },
              {
                "average": 0.4827981861,
                "count": 1585327,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997041676,
                "variance": 0.2497042551
              },
              {
                "average": 0,
                "count": 1585327,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1585327,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1585327,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04564547251,
                "count": 1585327,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2087150949,
                "variance": 0.04356199083
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86663.80992,
              2374441.909,
              0.9227282984,
              -86171.98992,
              2374915.429,
              2.162728298
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86663.80991507936,
                    2374441.90879636,
                    0.922728298437285
                  ],
                  [
                    -86663.80991507936,
                    2374915.4287963593,
                    0.922728298437285
                  ],
                  [
                    -86171.98991507935,
                    2374915.4287963593,
                    2.162728298437285
                  ],
                  [
                    -86171.98991507935,
                    2374441.90879636,
                    2.162728298437285
                  ],
                  [
                    -86663.80991507936,
                    2374441.90879636,
                    0.922728298437285
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:17+00:00",
            "end_time": "2018-09-08T05:48:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2195.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74311913592467,
              71.30057208826385,
              -3.026465001991367
            ],
            [
              -156.74365214101277,
              71.30491949085526,
              -3.026465001991367
            ],
            [
              -156.73014909700163,
              71.30510718516076,
              29.133534998008635
            ],
            [
              -156.72961870920253,
              71.3007597406085,
              29.133534998008635
            ],
            [
              -156.74311913592467,
              71.30057208826385,
              -3.026465001991367
            ]
          ]
        ]
      },
      "bbox": [
        -156.7436521,
        71.30057209,
        -3.026465002,
        -156.7296187,
        71.30510719,
        29.133535
      ],
      "properties": {
        "datetime": "2018-09-08T04:28:45Z",
        "pc:count": 2894316,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100384.6487,
            "count": 2894316,
            "maximum": -100138.9841,
            "minimum": -100634.8241,
            "name": "X",
            "position": 0,
            "stddev": 135.9386677,
            "variance": 18479.32137
          },
          {
            "average": 2369273.613,
            "count": 2894316,
            "maximum": 2369516.424,
            "minimum": 2369042.844,
            "name": "Y",
            "position": 1,
            "stddev": 129.450449,
            "variance": 16757.41874
          },
          {
            "average": 7.014475334,
            "count": 2894316,
            "maximum": 29.133535,
            "minimum": -3.026465002,
            "name": "Z",
            "position": 2,
            "stddev": 1.930657235,
            "variance": 3.727437359
          },
          {
            "average": 36346.10529,
            "count": 2894316,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12047.99992,
            "variance": 145154302.1
          },
          {
            "average": 1.022133727,
            "count": 2894316,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1511815588,
            "variance": 0.02285586371
          },
          {
            "average": 1.044245687,
            "count": 2894316,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2142878375,
            "variance": 0.0459192773
          },
          {
            "average": 0.5025183843,
            "count": 2894316,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999937441,
            "variance": 0.2499937441
          },
          {
            "average": 0.0004457011605,
            "count": 2894316,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02110693405,
            "variance": 0.0004455026649
          },
          {
            "average": 1.675924122,
            "count": 2894316,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.266930723,
            "variance": 1.605113457
          },
          {
            "average": 1.160392464,
            "count": 2894316,
            "maximum": 16.31399918,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.49001631,
            "variance": 110.0404421
          },
          {
            "average": 0.5377902758,
            "count": 2894316,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985699359,
            "variance": 0.2485719809
          },
          {
            "average": 406.3361637,
            "count": 2894316,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9678004923,
            "variance": 0.9366377929
          },
          {
            "average": 220415232.6,
            "count": 2894316,
            "maximum": 220416125.2,
            "minimum": 220414518.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 537.7076279,
            "variance": 289129.4931
          },
          {
            "average": 0.5377902758,
            "count": 2894316,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985699359,
            "variance": 0.2485719809
          },
          {
            "average": 0,
            "count": 2894316,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2894316,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2894316,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.26143068,
            "count": 2894316,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4394140943,
            "variance": 0.1930847463
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100634.8241,
          2369042.844,
          -3.026465002,
          -100138.9841,
          2369516.424,
          29.133535
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100634.82411088272,
                2369042.8438331336,
                -3.026465001991367
              ],
              [
                -100634.82411088272,
                2369516.4238331337,
                -3.026465001991367
              ],
              [
                -100138.98411088272,
                2369516.4238331337,
                29.133534998008635
              ],
              [
                -100138.98411088272,
                2369042.8438331336,
                29.133534998008635
              ],
              [
                -100634.82411088272,
                2369042.8438331336,
                -3.026465001991367
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:28:45+00:00",
        "end_time": "2018-09-08T04:01:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2195.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2195.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2195.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2195.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7436521,
            71.30057209,
            -3.026465002,
            -156.7296187,
            71.30510719,
            29.133535
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74311913592467,
                  71.30057208826385,
                  -3.026465001991367
                ],
                [
                  -156.74365214101277,
                  71.30491949085526,
                  -3.026465001991367
                ],
                [
                  -156.73014909700163,
                  71.30510718516076,
                  29.133534998008635
                ],
                [
                  -156.72961870920253,
                  71.3007597406085,
                  29.133534998008635
                ],
                [
                  -156.74311913592467,
                  71.30057208826385,
                  -3.026465001991367
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2195.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2195.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:28:45Z",
            "pc:count": 2894316,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100384.6487,
                "count": 2894316,
                "maximum": -100138.9841,
                "minimum": -100634.8241,
                "name": "X",
                "position": 0,
                "stddev": 135.9386677,
                "variance": 18479.32137
              },
              {
                "average": 2369273.613,
                "count": 2894316,
                "maximum": 2369516.424,
                "minimum": 2369042.844,
                "name": "Y",
                "position": 1,
                "stddev": 129.450449,
                "variance": 16757.41874
              },
              {
                "average": 7.014475334,
                "count": 2894316,
                "maximum": 29.133535,
                "minimum": -3.026465002,
                "name": "Z",
                "position": 2,
                "stddev": 1.930657235,
                "variance": 3.727437359
              },
              {
                "average": 36346.10529,
                "count": 2894316,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12047.99992,
                "variance": 145154302.1
              },
              {
                "average": 1.022133727,
                "count": 2894316,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1511815588,
                "variance": 0.02285586371
              },
              {
                "average": 1.044245687,
                "count": 2894316,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2142878375,
                "variance": 0.0459192773
              },
              {
                "average": 0.5025183843,
                "count": 2894316,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999937441,
                "variance": 0.2499937441
              },
              {
                "average": 0.0004457011605,
                "count": 2894316,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02110693405,
                "variance": 0.0004455026649
              },
              {
                "average": 1.675924122,
                "count": 2894316,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.266930723,
                "variance": 1.605113457
              },
              {
                "average": 1.160392464,
                "count": 2894316,
                "maximum": 16.31399918,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.49001631,
                "variance": 110.0404421
              },
              {
                "average": 0.5377902758,
                "count": 2894316,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985699359,
                "variance": 0.2485719809
              },
              {
                "average": 406.3361637,
                "count": 2894316,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9678004923,
                "variance": 0.9366377929
              },
              {
                "average": 220415232.6,
                "count": 2894316,
                "maximum": 220416125.2,
                "minimum": 220414518.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 537.7076279,
                "variance": 289129.4931
              },
              {
                "average": 0.5377902758,
                "count": 2894316,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985699359,
                "variance": 0.2485719809
              },
              {
                "average": 0,
                "count": 2894316,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2894316,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2894316,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.26143068,
                "count": 2894316,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4394140943,
                "variance": 0.1930847463
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100634.8241,
              2369042.844,
              -3.026465002,
              -100138.9841,
              2369516.424,
              29.133535
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100634.82411088272,
                    2369042.8438331336,
                    -3.026465001991367
                  ],
                  [
                    -100634.82411088272,
                    2369516.4238331337,
                    -3.026465001991367
                  ],
                  [
                    -100138.98411088272,
                    2369516.4238331337,
                    29.133534998008635
                  ],
                  [
                    -100138.98411088272,
                    2369042.8438331336,
                    29.133534998008635
                  ],
                  [
                    -100634.82411088272,
                    2369042.8438331336,
                    -3.026465001991367
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:28:45+00:00",
            "end_time": "2018-09-08T04:01:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2262.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.601769280262,
              71.3118728947406,
              2.715057113757057
            ],
            [
              -156.60227519679123,
              71.31622192083255,
              2.715057113757057
            ],
            [
              -156.58875764019842,
              71.31640002399043,
              8.055057113757057
            ],
            [
              -156.58825434632118,
              71.31205095804093,
              8.055057113757057
            ],
            [
              -156.601769280262,
              71.3118728947406,
              2.715057113757057
            ]
          ]
        ]
      },
      "bbox": [
        -156.6022752,
        71.31187289,
        2.715057114,
        -156.5882543,
        71.31640002,
        8.055057114
      ],
      "properties": {
        "datetime": "2018-09-08T05:33:33Z",
        "pc:count": 3134321,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95160.65391,
            "count": 3134321,
            "maximum": -94907.69613,
            "minimum": -95403.77613,
            "name": "X",
            "position": 0,
            "stddev": 135.1033092,
            "variance": 18252.90414
          },
          {
            "average": 2370304.726,
            "count": 3134321,
            "maximum": 2370536.867,
            "minimum": 2370063.187,
            "name": "Y",
            "position": 1,
            "stddev": 127.6415869,
            "variance": 16292.3747
          },
          {
            "average": 4.430669072,
            "count": 3134321,
            "maximum": 8.055057114,
            "minimum": 2.715057114,
            "name": "Z",
            "position": 2,
            "stddev": 0.7045646661,
            "variance": 0.4964113687
          },
          {
            "average": 44175.37214,
            "count": 3134321,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11019.42805,
            "variance": 121427794.5
          },
          {
            "average": 1.000014357,
            "count": 3134321,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003789059912,
            "variance": 1.435697501e-05
          },
          {
            "average": 1.000028714,
            "count": 3134321,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005358501448,
            "variance": 2.871353777e-05
          },
          {
            "average": 0.5004525701,
            "count": 3134321,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998749,
            "variance": 0.2499998749
          },
          {
            "average": 0.000423058136,
            "count": 3134321,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0205640291,
            "variance": 0.0004228792928
          },
          {
            "average": 1.296764435,
            "count": 3134321,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4571320961,
            "variance": 0.2089697533
          },
          {
            "average": 0.1266726859,
            "count": 3134321,
            "maximum": 16.3560009,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.4029233,
            "variance": 108.2208132
          },
          {
            "average": 0.4961071313,
            "count": 3134321,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999849251,
            "variance": 0.2499849253
          },
          {
            "average": 413.0502211,
            "count": 3134321,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9207656234,
            "variance": 0.8478093332
          },
          {
            "average": 220418995.7,
            "count": 3134321,
            "maximum": 220420013.4,
            "minimum": 220417838.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 497.5923708,
            "variance": 247598.1675
          },
          {
            "average": 0.4961071313,
            "count": 3134321,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999849251,
            "variance": 0.2499849253
          },
          {
            "average": 0,
            "count": 3134321,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3134321,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3134321,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2314274766,
            "count": 3134321,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4217450135,
            "variance": 0.1778688564
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95403.77613,
          2370063.187,
          2.715057114,
          -94907.69613,
          2370536.867,
          8.055057114
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95403.77613057023,
                2370063.186635297,
                2.715057113757057
              ],
              [
                -95403.77613057023,
                2370536.8666352965,
                2.715057113757057
              ],
              [
                -94907.69613057024,
                2370536.8666352965,
                8.055057113757057
              ],
              [
                -94907.69613057024,
                2370063.186635297,
                8.055057113757057
              ],
              [
                -95403.77613057023,
                2370063.186635297,
                2.715057113757057
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:33:33+00:00",
        "end_time": "2018-09-08T04:57:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2262.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2262.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2262.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2262.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6022752,
            71.31187289,
            2.715057114,
            -156.5882543,
            71.31640002,
            8.055057114
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.601769280262,
                  71.3118728947406,
                  2.715057113757057
                ],
                [
                  -156.60227519679123,
                  71.31622192083255,
                  2.715057113757057
                ],
                [
                  -156.58875764019842,
                  71.31640002399043,
                  8.055057113757057
                ],
                [
                  -156.58825434632118,
                  71.31205095804093,
                  8.055057113757057
                ],
                [
                  -156.601769280262,
                  71.3118728947406,
                  2.715057113757057
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2262.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2262.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:33:33Z",
            "pc:count": 3134321,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95160.65391,
                "count": 3134321,
                "maximum": -94907.69613,
                "minimum": -95403.77613,
                "name": "X",
                "position": 0,
                "stddev": 135.1033092,
                "variance": 18252.90414
              },
              {
                "average": 2370304.726,
                "count": 3134321,
                "maximum": 2370536.867,
                "minimum": 2370063.187,
                "name": "Y",
                "position": 1,
                "stddev": 127.6415869,
                "variance": 16292.3747
              },
              {
                "average": 4.430669072,
                "count": 3134321,
                "maximum": 8.055057114,
                "minimum": 2.715057114,
                "name": "Z",
                "position": 2,
                "stddev": 0.7045646661,
                "variance": 0.4964113687
              },
              {
                "average": 44175.37214,
                "count": 3134321,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11019.42805,
                "variance": 121427794.5
              },
              {
                "average": 1.000014357,
                "count": 3134321,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003789059912,
                "variance": 1.435697501e-05
              },
              {
                "average": 1.000028714,
                "count": 3134321,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005358501448,
                "variance": 2.871353777e-05
              },
              {
                "average": 0.5004525701,
                "count": 3134321,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998749,
                "variance": 0.2499998749
              },
              {
                "average": 0.000423058136,
                "count": 3134321,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0205640291,
                "variance": 0.0004228792928
              },
              {
                "average": 1.296764435,
                "count": 3134321,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4571320961,
                "variance": 0.2089697533
              },
              {
                "average": 0.1266726859,
                "count": 3134321,
                "maximum": 16.3560009,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.4029233,
                "variance": 108.2208132
              },
              {
                "average": 0.4961071313,
                "count": 3134321,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999849251,
                "variance": 0.2499849253
              },
              {
                "average": 413.0502211,
                "count": 3134321,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9207656234,
                "variance": 0.8478093332
              },
              {
                "average": 220418995.7,
                "count": 3134321,
                "maximum": 220420013.4,
                "minimum": 220417838.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 497.5923708,
                "variance": 247598.1675
              },
              {
                "average": 0.4961071313,
                "count": 3134321,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999849251,
                "variance": 0.2499849253
              },
              {
                "average": 0,
                "count": 3134321,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3134321,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3134321,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2314274766,
                "count": 3134321,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4217450135,
                "variance": 0.1778688564
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95403.77613,
              2370063.187,
              2.715057114,
              -94907.69613,
              2370536.867,
              8.055057114
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95403.77613057023,
                    2370063.186635297,
                    2.715057113757057
                  ],
                  [
                    -95403.77613057023,
                    2370536.8666352965,
                    2.715057113757057
                  ],
                  [
                    -94907.69613057024,
                    2370536.8666352965,
                    8.055057113757057
                  ],
                  [
                    -94907.69613057024,
                    2370063.186635297,
                    8.055057113757057
                  ],
                  [
                    -95403.77613057023,
                    2370063.186635297,
                    2.715057113757057
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:33:33+00:00",
            "end_time": "2018-09-08T04:57:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2319.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60058530574943,
              71.32826060948456,
              1.377347175873421
            ],
            [
              -156.6010911063089,
              71.33260791868918,
              1.377347175873421
            ],
            [
              -156.5875827234968,
              71.33278570953563,
              4.41734717587342
            ],
            [
              -156.58707954440627,
              71.32843836052136,
              4.41734717587342
            ],
            [
              -156.60058530574943,
              71.32826060948456,
              1.377347175873421
            ]
          ]
        ]
      },
      "bbox": [
        -156.6010911,
        71.32826061,
        1.377347176,
        -156.5870795,
        71.33278571,
        4.417347176
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:05Z",
        "pc:count": 3089309,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95044.46447,
            "count": 3089309,
            "maximum": -94795.18337,
            "minimum": -95290.56337,
            "name": "X",
            "position": 0,
            "stddev": 135.368851,
            "variance": 18324.72583
          },
          {
            "average": 2372069.844,
            "count": 3089309,
            "maximum": 2372317.006,
            "minimum": 2371843.566,
            "name": "Y",
            "position": 1,
            "stddev": 127.9196632,
            "variance": 16363.44023
          },
          {
            "average": 2.645074661,
            "count": 3089309,
            "maximum": 4.417347176,
            "minimum": 1.377347176,
            "name": "Z",
            "position": 2,
            "stddev": 0.4887713324,
            "variance": 0.2388974153
          },
          {
            "average": 35563.46327,
            "count": 3089309,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12768.02834,
            "variance": 163022547.7
          },
          {
            "average": 1,
            "count": 3089309,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3089309,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.499411357,
            "count": 3089309,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997344,
            "variance": 0.2499997344
          },
          {
            "average": 0.0004486440172,
            "count": 3089309,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02117646998,
            "variance": 0.0004484428809
          },
          {
            "average": 1.297340603,
            "count": 3089309,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4572364696,
            "variance": 0.2090651891
          },
          {
            "average": -0.7710255274,
            "count": 3089309,
            "maximum": 16.37999916,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.17017458,
            "variance": 103.432451
          },
          {
            "average": 0.4575851752,
            "count": 3089309,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981978151,
            "variance": 0.248201063
          },
          {
            "average": 409.5585926,
            "count": 3089309,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9672542804,
            "variance": 0.935580843
          },
          {
            "average": 220417054.3,
            "count": 3089309,
            "maximum": 220417825,
            "minimum": 220416213.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 538.3558686,
            "variance": 289827.0413
          },
          {
            "average": 0.4575851752,
            "count": 3089309,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981978151,
            "variance": 0.248201063
          },
          {
            "average": 0,
            "count": 3089309,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3089309,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3089309,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2075894642,
            "count": 3089309,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4055812271,
            "variance": 0.1644961318
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95290.56337,
          2371843.566,
          1.377347176,
          -94795.18337,
          2372317.006,
          4.417347176
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95290.56337197033,
                2371843.566182936,
                1.377347175873421
              ],
              [
                -95290.56337197033,
                2372317.0061829365,
                1.377347175873421
              ],
              [
                -94795.18337197033,
                2372317.0061829365,
                4.41734717587342
              ],
              [
                -94795.18337197033,
                2371843.566182936,
                4.41734717587342
              ],
              [
                -95290.56337197033,
                2371843.566182936,
                1.377347175873421
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:05+00:00",
        "end_time": "2018-09-08T04:30:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2319.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2319.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2319.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2319.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6010911,
            71.32826061,
            1.377347176,
            -156.5870795,
            71.33278571,
            4.417347176
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60058530574943,
                  71.32826060948456,
                  1.377347175873421
                ],
                [
                  -156.6010911063089,
                  71.33260791868918,
                  1.377347175873421
                ],
                [
                  -156.5875827234968,
                  71.33278570953563,
                  4.41734717587342
                ],
                [
                  -156.58707954440627,
                  71.32843836052136,
                  4.41734717587342
                ],
                [
                  -156.60058530574943,
                  71.32826060948456,
                  1.377347175873421
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2319.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2319.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:05Z",
            "pc:count": 3089309,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95044.46447,
                "count": 3089309,
                "maximum": -94795.18337,
                "minimum": -95290.56337,
                "name": "X",
                "position": 0,
                "stddev": 135.368851,
                "variance": 18324.72583
              },
              {
                "average": 2372069.844,
                "count": 3089309,
                "maximum": 2372317.006,
                "minimum": 2371843.566,
                "name": "Y",
                "position": 1,
                "stddev": 127.9196632,
                "variance": 16363.44023
              },
              {
                "average": 2.645074661,
                "count": 3089309,
                "maximum": 4.417347176,
                "minimum": 1.377347176,
                "name": "Z",
                "position": 2,
                "stddev": 0.4887713324,
                "variance": 0.2388974153
              },
              {
                "average": 35563.46327,
                "count": 3089309,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12768.02834,
                "variance": 163022547.7
              },
              {
                "average": 1,
                "count": 3089309,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3089309,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.499411357,
                "count": 3089309,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997344,
                "variance": 0.2499997344
              },
              {
                "average": 0.0004486440172,
                "count": 3089309,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02117646998,
                "variance": 0.0004484428809
              },
              {
                "average": 1.297340603,
                "count": 3089309,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4572364696,
                "variance": 0.2090651891
              },
              {
                "average": -0.7710255274,
                "count": 3089309,
                "maximum": 16.37999916,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.17017458,
                "variance": 103.432451
              },
              {
                "average": 0.4575851752,
                "count": 3089309,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981978151,
                "variance": 0.248201063
              },
              {
                "average": 409.5585926,
                "count": 3089309,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9672542804,
                "variance": 0.935580843
              },
              {
                "average": 220417054.3,
                "count": 3089309,
                "maximum": 220417825,
                "minimum": 220416213.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 538.3558686,
                "variance": 289827.0413
              },
              {
                "average": 0.4575851752,
                "count": 3089309,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981978151,
                "variance": 0.248201063
              },
              {
                "average": 0,
                "count": 3089309,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3089309,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3089309,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2075894642,
                "count": 3089309,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4055812271,
                "variance": 0.1644961318
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95290.56337,
              2371843.566,
              1.377347176,
              -94795.18337,
              2372317.006,
              4.417347176
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95290.56337197033,
                    2371843.566182936,
                    1.377347175873421
                  ],
                  [
                    -95290.56337197033,
                    2372317.0061829365,
                    1.377347175873421
                  ],
                  [
                    -94795.18337197033,
                    2372317.0061829365,
                    4.41734717587342
                  ],
                  [
                    -94795.18337197033,
                    2371843.566182936,
                    4.41734717587342
                  ],
                  [
                    -95290.56337197033,
                    2371843.566182936,
                    1.377347175873421
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:05+00:00",
            "end_time": "2018-09-08T04:30:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2241.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6531610696468,
              71.30814858217819,
              3.355693389766525
            ],
            [
              -156.65367686645456,
              71.31249718165715,
              3.355693389766525
            ],
            [
              -156.64016469592528,
              71.31267876911353,
              9.075693389766524
            ],
            [
              -156.63965151993705,
              71.30833012901005,
              9.075693389766524
            ],
            [
              -156.6531610696468,
              71.30814858217819,
              3.355693389766525
            ]
          ]
        ]
      },
      "bbox": [
        -156.6536769,
        71.30814858,
        3.35569339,
        -156.6396515,
        71.31267877,
        9.07569339
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:06Z",
        "pc:count": 2965343,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97047.99721,
            "count": 2965343,
            "maximum": -96807.46798,
            "minimum": -97303.44798,
            "name": "X",
            "position": 0,
            "stddev": 132.4683043,
            "variance": 17547.85165
          },
          {
            "average": 2369983.058,
            "count": 2965343,
            "maximum": 2370206.388,
            "minimum": 2369732.728,
            "name": "Y",
            "position": 1,
            "stddev": 126.0436029,
            "variance": 15886.98983
          },
          {
            "average": 5.039850794,
            "count": 2965343,
            "maximum": 9.07569339,
            "minimum": 3.35569339,
            "name": "Z",
            "position": 2,
            "stddev": 1.712739314,
            "variance": 2.933475959
          },
          {
            "average": 36853.07916,
            "count": 2965343,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13400.48968,
            "variance": 179573123.7
          },
          {
            "average": 1,
            "count": 2965343,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2965343,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5031856348,
            "count": 2965343,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999899359,
            "variance": 0.249989936
          },
          {
            "average": 0.000402314336,
            "count": 2965343,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02005374316,
            "variance": 0.0004021526148
          },
          {
            "average": 1.564099667,
            "count": 2965343,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.476819419,
            "variance": 2.180995597
          },
          {
            "average": 0.8677298233,
            "count": 2965343,
            "maximum": 16.45800018,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.3822484,
            "variance": 107.7910818
          },
          {
            "average": 0.5397736451,
            "count": 2965343,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984156307,
            "variance": 0.2484181409
          },
          {
            "average": 410.4685519,
            "count": 2965343,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9686158132,
            "variance": 0.9382165936
          },
          {
            "average": 220417569.5,
            "count": 2965343,
            "maximum": 220418426.2,
            "minimum": 220416745.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.9854375,
            "variance": 292665.2436
          },
          {
            "average": 0.5397736451,
            "count": 2965343,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984156307,
            "variance": 0.2484181409
          },
          {
            "average": 0,
            "count": 2965343,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2965343,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2965343,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2386260207,
            "count": 2965343,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4262437146,
            "variance": 0.1816837042
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97303.44798,
          2369732.728,
          3.35569339,
          -96807.46798,
          2370206.388,
          9.07569339
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97303.4479835538,
                2369732.7281922298,
                3.355693389766525
              ],
              [
                -97303.4479835538,
                2370206.38819223,
                3.355693389766525
              ],
              [
                -96807.46798355378,
                2370206.38819223,
                9.075693389766524
              ],
              [
                -96807.46798355378,
                2369732.7281922298,
                9.075693389766524
              ],
              [
                -97303.4479835538,
                2369732.7281922298,
                3.355693389766525
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:06+00:00",
        "end_time": "2018-09-08T04:39:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2241.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2241.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2241.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2241.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6536769,
            71.30814858,
            3.35569339,
            -156.6396515,
            71.31267877,
            9.07569339
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6531610696468,
                  71.30814858217819,
                  3.355693389766525
                ],
                [
                  -156.65367686645456,
                  71.31249718165715,
                  3.355693389766525
                ],
                [
                  -156.64016469592528,
                  71.31267876911353,
                  9.075693389766524
                ],
                [
                  -156.63965151993705,
                  71.30833012901005,
                  9.075693389766524
                ],
                [
                  -156.6531610696468,
                  71.30814858217819,
                  3.355693389766525
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2241.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2241.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:06Z",
            "pc:count": 2965343,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97047.99721,
                "count": 2965343,
                "maximum": -96807.46798,
                "minimum": -97303.44798,
                "name": "X",
                "position": 0,
                "stddev": 132.4683043,
                "variance": 17547.85165
              },
              {
                "average": 2369983.058,
                "count": 2965343,
                "maximum": 2370206.388,
                "minimum": 2369732.728,
                "name": "Y",
                "position": 1,
                "stddev": 126.0436029,
                "variance": 15886.98983
              },
              {
                "average": 5.039850794,
                "count": 2965343,
                "maximum": 9.07569339,
                "minimum": 3.35569339,
                "name": "Z",
                "position": 2,
                "stddev": 1.712739314,
                "variance": 2.933475959
              },
              {
                "average": 36853.07916,
                "count": 2965343,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13400.48968,
                "variance": 179573123.7
              },
              {
                "average": 1,
                "count": 2965343,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2965343,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5031856348,
                "count": 2965343,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999899359,
                "variance": 0.249989936
              },
              {
                "average": 0.000402314336,
                "count": 2965343,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02005374316,
                "variance": 0.0004021526148
              },
              {
                "average": 1.564099667,
                "count": 2965343,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.476819419,
                "variance": 2.180995597
              },
              {
                "average": 0.8677298233,
                "count": 2965343,
                "maximum": 16.45800018,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.3822484,
                "variance": 107.7910818
              },
              {
                "average": 0.5397736451,
                "count": 2965343,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984156307,
                "variance": 0.2484181409
              },
              {
                "average": 410.4685519,
                "count": 2965343,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9686158132,
                "variance": 0.9382165936
              },
              {
                "average": 220417569.5,
                "count": 2965343,
                "maximum": 220418426.2,
                "minimum": 220416745.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.9854375,
                "variance": 292665.2436
              },
              {
                "average": 0.5397736451,
                "count": 2965343,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984156307,
                "variance": 0.2484181409
              },
              {
                "average": 0,
                "count": 2965343,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2965343,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2965343,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2386260207,
                "count": 2965343,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4262437146,
                "variance": 0.1816837042
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97303.44798,
              2369732.728,
              3.35569339,
              -96807.46798,
              2370206.388,
              9.07569339
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97303.4479835538,
                    2369732.7281922298,
                    3.355693389766525
                  ],
                  [
                    -97303.4479835538,
                    2370206.38819223,
                    3.355693389766525
                  ],
                  [
                    -96807.46798355378,
                    2370206.38819223,
                    9.075693389766524
                  ],
                  [
                    -96807.46798355378,
                    2369732.7281922298,
                    9.075693389766524
                  ],
                  [
                    -97303.4479835538,
                    2369732.7281922298,
                    3.355693389766525
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:06+00:00",
            "end_time": "2018-09-08T04:39:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2341.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.59999154622497,
              71.33645477037591,
              0.850108744594676
            ],
            [
              -156.60049745946336,
              71.3408026908329,
              0.850108744594676
            ],
            [
              -156.58696557060705,
              71.3409806941358,
              24.850108744594678
            ],
            [
              -156.5864622845864,
              71.33663273379713,
              24.850108744594678
            ],
            [
              -156.59999154622497,
              71.33645477037591,
              0.850108744594676
            ]
          ]
        ]
      },
      "bbox": [
        -156.6004975,
        71.33645477,
        0.8501087446,
        -156.5864623,
        71.34098069,
        24.85010874
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:15Z",
        "pc:count": 2025986,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95007.08078,
            "count": 2025986,
            "maximum": -94737.85755,
            "minimum": -95233.91755,
            "name": "X",
            "position": 0,
            "stddev": 137.2241885,
            "variance": 18830.4779
          },
          {
            "average": 2372982.398,
            "count": 2025986,
            "maximum": 2373207.193,
            "minimum": 2372733.713,
            "name": "Y",
            "position": 1,
            "stddev": 127.2170614,
            "variance": 16184.18072
          },
          {
            "average": 1.249484234,
            "count": 2025986,
            "maximum": 24.85010874,
            "minimum": 0.8501087446,
            "name": "Z",
            "position": 2,
            "stddev": 0.3105064528,
            "variance": 0.09641425723
          },
          {
            "average": 22994.95675,
            "count": 2025986,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15466.01078,
            "variance": 239197489.4
          },
          {
            "average": 1.000002468,
            "count": 2025986,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001570964436,
            "variance": 2.467929259e-06
          },
          {
            "average": 1.000004936,
            "count": 2025986,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00222167647,
            "variance": 4.935846337e-06
          },
          {
            "average": 0.4936050891,
            "count": 2025986,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999592268,
            "variance": 0.2499592285
          },
          {
            "average": 0.0004812471557,
            "count": 2025986,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02193207228,
            "variance": 0.0004810157943
          },
          {
            "average": 6.699164752,
            "count": 2025986,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.397205143,
            "variance": 11.54100278
          },
          {
            "average": 2.488422993,
            "count": 2025986,
            "maximum": 16.30800056,
            "minimum": -16.3560009,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.388285254,
            "variance": 54.586759
          },
          {
            "average": 0.4843152914,
            "count": 2025986,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997540527,
            "variance": 0.2497541132
          },
          {
            "average": 407.5405062,
            "count": 2025986,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7236500567,
            "variance": 0.5236694045
          },
          {
            "average": 220415924.4,
            "count": 2025986,
            "maximum": 220416695.2,
            "minimum": 220415103.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 431.495303,
            "variance": 186188.1965
          },
          {
            "average": 0.4843152914,
            "count": 2025986,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997540527,
            "variance": 0.2497541132
          },
          {
            "average": 0,
            "count": 2025986,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2025986,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2025986,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06054336012,
            "count": 2025986,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2384908588,
            "variance": 0.05687788974
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95233.91755,
          2372733.713,
          0.8501087446,
          -94737.85755,
          2373207.193,
          24.85010874
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95233.91754824988,
                2372733.713249374,
                0.850108744594676
              ],
              [
                -95233.91754824988,
                2373207.1932493746,
                0.850108744594676
              ],
              [
                -94737.85754824989,
                2373207.1932493746,
                24.850108744594678
              ],
              [
                -94737.85754824989,
                2372733.713249374,
                24.850108744594678
              ],
              [
                -95233.91754824988,
                2372733.713249374,
                0.850108744594676
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:15+00:00",
        "end_time": "2018-09-08T04:11:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2341.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2341.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2341.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2341.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6004975,
            71.33645477,
            0.8501087446,
            -156.5864623,
            71.34098069,
            24.85010874
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.59999154622497,
                  71.33645477037591,
                  0.850108744594676
                ],
                [
                  -156.60049745946336,
                  71.3408026908329,
                  0.850108744594676
                ],
                [
                  -156.58696557060705,
                  71.3409806941358,
                  24.850108744594678
                ],
                [
                  -156.5864622845864,
                  71.33663273379713,
                  24.850108744594678
                ],
                [
                  -156.59999154622497,
                  71.33645477037591,
                  0.850108744594676
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2341.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2341.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:15Z",
            "pc:count": 2025986,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95007.08078,
                "count": 2025986,
                "maximum": -94737.85755,
                "minimum": -95233.91755,
                "name": "X",
                "position": 0,
                "stddev": 137.2241885,
                "variance": 18830.4779
              },
              {
                "average": 2372982.398,
                "count": 2025986,
                "maximum": 2373207.193,
                "minimum": 2372733.713,
                "name": "Y",
                "position": 1,
                "stddev": 127.2170614,
                "variance": 16184.18072
              },
              {
                "average": 1.249484234,
                "count": 2025986,
                "maximum": 24.85010874,
                "minimum": 0.8501087446,
                "name": "Z",
                "position": 2,
                "stddev": 0.3105064528,
                "variance": 0.09641425723
              },
              {
                "average": 22994.95675,
                "count": 2025986,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15466.01078,
                "variance": 239197489.4
              },
              {
                "average": 1.000002468,
                "count": 2025986,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001570964436,
                "variance": 2.467929259e-06
              },
              {
                "average": 1.000004936,
                "count": 2025986,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00222167647,
                "variance": 4.935846337e-06
              },
              {
                "average": 0.4936050891,
                "count": 2025986,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999592268,
                "variance": 0.2499592285
              },
              {
                "average": 0.0004812471557,
                "count": 2025986,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02193207228,
                "variance": 0.0004810157943
              },
              {
                "average": 6.699164752,
                "count": 2025986,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.397205143,
                "variance": 11.54100278
              },
              {
                "average": 2.488422993,
                "count": 2025986,
                "maximum": 16.30800056,
                "minimum": -16.3560009,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.388285254,
                "variance": 54.586759
              },
              {
                "average": 0.4843152914,
                "count": 2025986,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997540527,
                "variance": 0.2497541132
              },
              {
                "average": 407.5405062,
                "count": 2025986,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7236500567,
                "variance": 0.5236694045
              },
              {
                "average": 220415924.4,
                "count": 2025986,
                "maximum": 220416695.2,
                "minimum": 220415103.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 431.495303,
                "variance": 186188.1965
              },
              {
                "average": 0.4843152914,
                "count": 2025986,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997540527,
                "variance": 0.2497541132
              },
              {
                "average": 0,
                "count": 2025986,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2025986,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2025986,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06054336012,
                "count": 2025986,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2384908588,
                "variance": 0.05687788974
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95233.91755,
              2372733.713,
              0.8501087446,
              -94737.85755,
              2373207.193,
              24.85010874
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95233.91754824988,
                    2372733.713249374,
                    0.850108744594676
                  ],
                  [
                    -95233.91754824988,
                    2373207.1932493746,
                    0.850108744594676
                  ],
                  [
                    -94737.85754824989,
                    2373207.1932493746,
                    24.850108744594678
                  ],
                  [
                    -94737.85754824989,
                    2372733.713249374,
                    24.850108744594678
                  ],
                  [
                    -95233.91754824988,
                    2372733.713249374,
                    0.850108744594676
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:15+00:00",
            "end_time": "2018-09-08T04:11:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2373.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57319922544787,
              71.3526493109882,
              0.850526706806572
            ],
            [
              -156.57368921942074,
              71.35690171343184,
              0.850526706806572
            ],
            [
              -156.5601435458642,
              71.35707794645403,
              3.370526706806572
            ],
            [
              -156.55965612567155,
              71.3528255053566,
              3.370526706806572
            ],
            [
              -156.57319922544787,
              71.3526493109882,
              0.850526706806572
            ]
          ]
        ]
      },
      "bbox": [
        -156.5736892,
        71.35264931,
        0.8505267068,
        -156.5596561,
        71.35707795,
        3.370526707
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:04Z",
        "pc:count": 1650441,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93926.76904,
            "count": 1650441,
            "maximum": -93688.58802,
            "minimum": -94184.78802,
            "name": "X",
            "position": 0,
            "stddev": 133.6778874,
            "variance": 17869.77758
          },
          {
            "average": 2374689.273,
            "count": 1650441,
            "maximum": 2374919.319,
            "minimum": 2374456.299,
            "name": "Y",
            "position": 1,
            "stddev": 125.3165292,
            "variance": 15704.23249
          },
          {
            "average": 1.181977628,
            "count": 1650441,
            "maximum": 3.370526707,
            "minimum": 0.8505267068,
            "name": "Z",
            "position": 2,
            "stddev": 0.1023114395,
            "variance": 0.01046763065
          },
          {
            "average": 15957.54787,
            "count": 1650441,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11458.78911,
            "variance": 131303847.8
          },
          {
            "average": 1,
            "count": 1650441,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1650441,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4957329586,
            "count": 1650441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999819435,
            "variance": 0.2499819438
          },
          {
            "average": 0.0005719683406,
            "count": 1650441,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02390902631,
            "variance": 0.0005716415392
          },
          {
            "average": 7.439571605,
            "count": 1650441,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.603895706,
            "variance": 6.780272845
          },
          {
            "average": 2.028467755,
            "count": 1650441,
            "maximum": 16.31399918,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.251638745,
            "variance": 52.58626449
          },
          {
            "average": 0.4863742479,
            "count": 1650441,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998144558,
            "variance": 0.2498144902
          },
          {
            "average": 405.818191,
            "count": 1650441,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6738602898,
            "variance": 0.4540876902
          },
          {
            "average": 220414952,
            "count": 1650441,
            "maximum": 220416264.4,
            "minimum": 220414006.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 416.0400124,
            "variance": 173089.2919
          },
          {
            "average": 0.4863742479,
            "count": 1650441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998144558,
            "variance": 0.2498144902
          },
          {
            "average": 0,
            "count": 1650441,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1650441,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1650441,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05135233553,
            "count": 1650441,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2207154337,
            "variance": 0.04871530268
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94184.78802,
          2374456.299,
          0.8505267068,
          -93688.58802,
          2374919.319,
          3.370526707
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94184.78801866066,
                2374456.29907798,
                0.850526706806572
              ],
              [
                -94184.78801866066,
                2374919.31907798,
                0.850526706806572
              ],
              [
                -93688.58801866065,
                2374919.31907798,
                3.370526706806572
              ],
              [
                -93688.58801866065,
                2374456.29907798,
                3.370526706806572
              ],
              [
                -94184.78801866066,
                2374456.29907798,
                0.850526706806572
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:04+00:00",
        "end_time": "2018-09-08T03:53:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2373.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2373.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2373.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2373.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5736892,
            71.35264931,
            0.8505267068,
            -156.5596561,
            71.35707795,
            3.370526707
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57319922544787,
                  71.3526493109882,
                  0.850526706806572
                ],
                [
                  -156.57368921942074,
                  71.35690171343184,
                  0.850526706806572
                ],
                [
                  -156.5601435458642,
                  71.35707794645403,
                  3.370526706806572
                ],
                [
                  -156.55965612567155,
                  71.3528255053566,
                  3.370526706806572
                ],
                [
                  -156.57319922544787,
                  71.3526493109882,
                  0.850526706806572
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2373.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2373.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:04Z",
            "pc:count": 1650441,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93926.76904,
                "count": 1650441,
                "maximum": -93688.58802,
                "minimum": -94184.78802,
                "name": "X",
                "position": 0,
                "stddev": 133.6778874,
                "variance": 17869.77758
              },
              {
                "average": 2374689.273,
                "count": 1650441,
                "maximum": 2374919.319,
                "minimum": 2374456.299,
                "name": "Y",
                "position": 1,
                "stddev": 125.3165292,
                "variance": 15704.23249
              },
              {
                "average": 1.181977628,
                "count": 1650441,
                "maximum": 3.370526707,
                "minimum": 0.8505267068,
                "name": "Z",
                "position": 2,
                "stddev": 0.1023114395,
                "variance": 0.01046763065
              },
              {
                "average": 15957.54787,
                "count": 1650441,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11458.78911,
                "variance": 131303847.8
              },
              {
                "average": 1,
                "count": 1650441,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1650441,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4957329586,
                "count": 1650441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999819435,
                "variance": 0.2499819438
              },
              {
                "average": 0.0005719683406,
                "count": 1650441,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02390902631,
                "variance": 0.0005716415392
              },
              {
                "average": 7.439571605,
                "count": 1650441,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.603895706,
                "variance": 6.780272845
              },
              {
                "average": 2.028467755,
                "count": 1650441,
                "maximum": 16.31399918,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.251638745,
                "variance": 52.58626449
              },
              {
                "average": 0.4863742479,
                "count": 1650441,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998144558,
                "variance": 0.2498144902
              },
              {
                "average": 405.818191,
                "count": 1650441,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6738602898,
                "variance": 0.4540876902
              },
              {
                "average": 220414952,
                "count": 1650441,
                "maximum": 220416264.4,
                "minimum": 220414006.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 416.0400124,
                "variance": 173089.2919
              },
              {
                "average": 0.4863742479,
                "count": 1650441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998144558,
                "variance": 0.2498144902
              },
              {
                "average": 0,
                "count": 1650441,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1650441,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1650441,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05135233553,
                "count": 1650441,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2207154337,
                "variance": 0.04871530268
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94184.78802,
              2374456.299,
              0.8505267068,
              -93688.58802,
              2374919.319,
              3.370526707
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94184.78801866066,
                    2374456.29907798,
                    0.850526706806572
                  ],
                  [
                    -94184.78801866066,
                    2374919.31907798,
                    0.850526706806572
                  ],
                  [
                    -93688.58801866065,
                    2374919.31907798,
                    3.370526706806572
                  ],
                  [
                    -93688.58801866065,
                    2374456.29907798,
                    3.370526706806572
                  ],
                  [
                    -94184.78801866066,
                    2374456.29907798,
                    0.850526706806572
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:04+00:00",
            "end_time": "2018-09-08T03:53:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2204.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62819131196142,
              71.29977036499947,
              0.988159475999587
            ],
            [
              -156.6287020657739,
              71.30411878294962,
              0.988159475999587
            ],
            [
              -156.61519584021005,
              71.30429863343993,
              3.768159475999588
            ],
            [
              -156.61468770520116,
              71.29995017527499,
              3.768159475999588
            ],
            [
              -156.62819131196142,
              71.29977036499947,
              0.988159475999587
            ]
          ]
        ]
      },
      "bbox": [
        -156.6287021,
        71.29977036,
        0.988159476,
        -156.6146877,
        71.30429863,
        3.768159476
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:02Z",
        "pc:count": 3273446,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96178.85737,
            "count": 3273446,
            "maximum": -95928.31227,
            "minimum": -96424.25227,
            "name": "X",
            "position": 0,
            "stddev": 133.821747,
            "variance": 17908.25998
          },
          {
            "average": 2369012.389,
            "count": 3273446,
            "maximum": 2369258.803,
            "minimum": 2368785.143,
            "name": "Y",
            "position": 1,
            "stddev": 129.1594181,
            "variance": 16682.15529
          },
          {
            "average": 3.124343702,
            "count": 3273446,
            "maximum": 3.768159476,
            "minimum": 0.988159476,
            "name": "Z",
            "position": 2,
            "stddev": 0.2876399923,
            "variance": 0.08273676518
          },
          {
            "average": 33790.71486,
            "count": 3273446,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13126.62778,
            "variance": 172308356.8
          },
          {
            "average": 1,
            "count": 3273446,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3273446,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5019053316,
            "count": 3273446,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999964461,
            "variance": 0.2499964461
          },
          {
            "average": 0.0003870538876,
            "count": 3273446,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0196698804,
            "variance": 0.000386904195
          },
          {
            "average": 1.320920828,
            "count": 3273446,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6409913881,
            "variance": 0.4108699596
          },
          {
            "average": 0.3254657386,
            "count": 3273446,
            "maximum": 20.44799995,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41319773,
            "variance": 108.4346869
          },
          {
            "average": 0.4984667534,
            "count": 3273446,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999977255,
            "variance": 0.2499977255
          },
          {
            "average": 414.9363976,
            "count": 3273446,
            "maximum": 456,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 6.008375514,
            "variance": 36.10057632
          },
          {
            "average": 220425767.1,
            "count": 3273446,
            "maximum": 220722982.6,
            "minimum": 220418418.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 43010.58921,
            "variance": 1849910785
          },
          {
            "average": 0.4984667534,
            "count": 3273446,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999977255,
            "variance": 0.2499977255
          },
          {
            "average": 0,
            "count": 3273446,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3273446,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3273446,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.225016084,
            "count": 3273446,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4175929827,
            "variance": 0.1743838992
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96424.25227,
          2368785.143,
          0.988159476,
          -95928.31227,
          2369258.803,
          3.768159476
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96424.25226654687,
                2368785.1426075683,
                0.988159475999587
              ],
              [
                -96424.25226654687,
                2369258.8026075684,
                0.988159475999587
              ],
              [
                -95928.31226654687,
                2369258.8026075684,
                3.768159475999588
              ],
              [
                -95928.31226654687,
                2368785.1426075683,
                3.768159475999588
              ],
              [
                -96424.25226654687,
                2368785.1426075683,
                0.988159475999587
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:02+00:00",
        "end_time": "2018-09-08T05:06:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2204.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2204.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2204.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2204.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6287021,
            71.29977036,
            0.988159476,
            -156.6146877,
            71.30429863,
            3.768159476
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62819131196142,
                  71.29977036499947,
                  0.988159475999587
                ],
                [
                  -156.6287020657739,
                  71.30411878294962,
                  0.988159475999587
                ],
                [
                  -156.61519584021005,
                  71.30429863343993,
                  3.768159475999588
                ],
                [
                  -156.61468770520116,
                  71.29995017527499,
                  3.768159475999588
                ],
                [
                  -156.62819131196142,
                  71.29977036499947,
                  0.988159475999587
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2204.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2204.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:02Z",
            "pc:count": 3273446,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96178.85737,
                "count": 3273446,
                "maximum": -95928.31227,
                "minimum": -96424.25227,
                "name": "X",
                "position": 0,
                "stddev": 133.821747,
                "variance": 17908.25998
              },
              {
                "average": 2369012.389,
                "count": 3273446,
                "maximum": 2369258.803,
                "minimum": 2368785.143,
                "name": "Y",
                "position": 1,
                "stddev": 129.1594181,
                "variance": 16682.15529
              },
              {
                "average": 3.124343702,
                "count": 3273446,
                "maximum": 3.768159476,
                "minimum": 0.988159476,
                "name": "Z",
                "position": 2,
                "stddev": 0.2876399923,
                "variance": 0.08273676518
              },
              {
                "average": 33790.71486,
                "count": 3273446,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13126.62778,
                "variance": 172308356.8
              },
              {
                "average": 1,
                "count": 3273446,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3273446,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5019053316,
                "count": 3273446,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999964461,
                "variance": 0.2499964461
              },
              {
                "average": 0.0003870538876,
                "count": 3273446,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0196698804,
                "variance": 0.000386904195
              },
              {
                "average": 1.320920828,
                "count": 3273446,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6409913881,
                "variance": 0.4108699596
              },
              {
                "average": 0.3254657386,
                "count": 3273446,
                "maximum": 20.44799995,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41319773,
                "variance": 108.4346869
              },
              {
                "average": 0.4984667534,
                "count": 3273446,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999977255,
                "variance": 0.2499977255
              },
              {
                "average": 414.9363976,
                "count": 3273446,
                "maximum": 456,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 6.008375514,
                "variance": 36.10057632
              },
              {
                "average": 220425767.1,
                "count": 3273446,
                "maximum": 220722982.6,
                "minimum": 220418418.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 43010.58921,
                "variance": 1849910785
              },
              {
                "average": 0.4984667534,
                "count": 3273446,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999977255,
                "variance": 0.2499977255
              },
              {
                "average": 0,
                "count": 3273446,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3273446,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3273446,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.225016084,
                "count": 3273446,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4175929827,
                "variance": 0.1743838992
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96424.25227,
              2368785.143,
              0.988159476,
              -95928.31227,
              2369258.803,
              3.768159476
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96424.25226654687,
                    2368785.1426075683,
                    0.988159475999587
                  ],
                  [
                    -96424.25226654687,
                    2369258.8026075684,
                    0.988159475999587
                  ],
                  [
                    -95928.31226654687,
                    2369258.8026075684,
                    3.768159475999588
                  ],
                  [
                    -95928.31226654687,
                    2368785.1426075683,
                    3.768159475999588
                  ],
                  [
                    -96424.25226654687,
                    2368785.1426075683,
                    0.988159475999587
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:02+00:00",
            "end_time": "2018-09-08T05:06:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2290.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.626741741008,
              71.32025513888159,
              -41.24353995910419
            ],
            [
              -156.62725246497115,
              71.32460232784251,
              -41.24353995910419
            ],
            [
              -156.61373385976714,
              71.32478210348687,
              147.39646004089582
            ],
            [
              -156.61322575830704,
              71.32043487429168,
              147.39646004089582
            ],
            [
              -156.626741741008,
              71.32025513888159,
              -41.24353995910419
            ]
          ]
        ]
      },
      "bbox": [
        -156.6272525,
        71.32025514,
        -41.24353996,
        -156.6132258,
        71.3247821,
        147.39646
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:28Z",
        "pc:count": 3095789,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96033.16854,
            "count": 3095789,
            "maximum": -95786.99856,
            "minimum": -96282.93856,
            "name": "X",
            "position": 0,
            "stddev": 134.77849,
            "variance": 18165.24136
          },
          {
            "average": 2371245.273,
            "count": 3095789,
            "maximum": 2371484.23,
            "minimum": 2371010.77,
            "name": "Y",
            "position": 1,
            "stddev": 130.106574,
            "variance": 16927.72061
          },
          {
            "average": 5.287135523,
            "count": 3095789,
            "maximum": 147.39646,
            "minimum": -41.24353996,
            "name": "Z",
            "position": 2,
            "stddev": 1.566562809,
            "variance": 2.454119033
          },
          {
            "average": 43363.25469,
            "count": 3095789,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9973.276761,
            "variance": 99466249.35
          },
          {
            "average": 1.002670079,
            "count": 3095789,
            "maximum": 7,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05430603522,
            "variance": 0.002949145462
          },
          {
            "average": 1.005341772,
            "count": 3095789,
            "maximum": 7,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07856096634,
            "variance": 0.006171825432
          },
          {
            "average": 0.4995356596,
            "count": 3095789,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998651,
            "variance": 0.2499998651
          },
          {
            "average": 0.0004670860966,
            "count": 3095789,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02160713026,
            "variance": 0.000466868078
          },
          {
            "average": 1.371279826,
            "count": 3095789,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6242913575,
            "variance": 0.389739699
          },
          {
            "average": -0.7946015226,
            "count": 3095789,
            "maximum": 16.2840004,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.34820717,
            "variance": 107.0853917
          },
          {
            "average": 0.4539453432,
            "count": 3095789,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.497874531,
            "variance": 0.2478790487
          },
          {
            "average": 409.5878598,
            "count": 3095789,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9732654662,
            "variance": 0.9472456677
          },
          {
            "average": 220417073.2,
            "count": 3095789,
            "maximum": 220417848.4,
            "minimum": 220416191,
            "name": "GpsTime",
            "position": 12,
            "stddev": 544.2420384,
            "variance": 296199.3964
          },
          {
            "average": 0.4539453432,
            "count": 3095789,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.497874531,
            "variance": 0.2478790487
          },
          {
            "average": 0,
            "count": 3095789,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3095789,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3095789,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2230965999,
            "count": 3095789,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.416322667,
            "variance": 0.173324563
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96282.93856,
          2371010.77,
          -41.24353996,
          -95786.99856,
          2371484.23,
          147.39646
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96282.93855849723,
                2371010.7699959,
                -41.24353995910419
              ],
              [
                -96282.93855849723,
                2371484.2299959,
                -41.24353995910419
              ],
              [
                -95786.99855849723,
                2371484.2299959,
                147.39646004089582
              ],
              [
                -95786.99855849723,
                2371010.7699959,
                147.39646004089582
              ],
              [
                -96282.93855849723,
                2371010.7699959,
                -41.24353995910419
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:28+00:00",
        "end_time": "2018-09-08T04:29:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2290.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2290.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2290.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2290.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6272525,
            71.32025514,
            -41.24353996,
            -156.6132258,
            71.3247821,
            147.39646
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.626741741008,
                  71.32025513888159,
                  -41.24353995910419
                ],
                [
                  -156.62725246497115,
                  71.32460232784251,
                  -41.24353995910419
                ],
                [
                  -156.61373385976714,
                  71.32478210348687,
                  147.39646004089582
                ],
                [
                  -156.61322575830704,
                  71.32043487429168,
                  147.39646004089582
                ],
                [
                  -156.626741741008,
                  71.32025513888159,
                  -41.24353995910419
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2290.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2290.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:28Z",
            "pc:count": 3095789,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96033.16854,
                "count": 3095789,
                "maximum": -95786.99856,
                "minimum": -96282.93856,
                "name": "X",
                "position": 0,
                "stddev": 134.77849,
                "variance": 18165.24136
              },
              {
                "average": 2371245.273,
                "count": 3095789,
                "maximum": 2371484.23,
                "minimum": 2371010.77,
                "name": "Y",
                "position": 1,
                "stddev": 130.106574,
                "variance": 16927.72061
              },
              {
                "average": 5.287135523,
                "count": 3095789,
                "maximum": 147.39646,
                "minimum": -41.24353996,
                "name": "Z",
                "position": 2,
                "stddev": 1.566562809,
                "variance": 2.454119033
              },
              {
                "average": 43363.25469,
                "count": 3095789,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9973.276761,
                "variance": 99466249.35
              },
              {
                "average": 1.002670079,
                "count": 3095789,
                "maximum": 7,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05430603522,
                "variance": 0.002949145462
              },
              {
                "average": 1.005341772,
                "count": 3095789,
                "maximum": 7,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07856096634,
                "variance": 0.006171825432
              },
              {
                "average": 0.4995356596,
                "count": 3095789,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998651,
                "variance": 0.2499998651
              },
              {
                "average": 0.0004670860966,
                "count": 3095789,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02160713026,
                "variance": 0.000466868078
              },
              {
                "average": 1.371279826,
                "count": 3095789,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6242913575,
                "variance": 0.389739699
              },
              {
                "average": -0.7946015226,
                "count": 3095789,
                "maximum": 16.2840004,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.34820717,
                "variance": 107.0853917
              },
              {
                "average": 0.4539453432,
                "count": 3095789,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.497874531,
                "variance": 0.2478790487
              },
              {
                "average": 409.5878598,
                "count": 3095789,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9732654662,
                "variance": 0.9472456677
              },
              {
                "average": 220417073.2,
                "count": 3095789,
                "maximum": 220417848.4,
                "minimum": 220416191,
                "name": "GpsTime",
                "position": 12,
                "stddev": 544.2420384,
                "variance": 296199.3964
              },
              {
                "average": 0.4539453432,
                "count": 3095789,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.497874531,
                "variance": 0.2478790487
              },
              {
                "average": 0,
                "count": 3095789,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3095789,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3095789,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2230965999,
                "count": 3095789,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.416322667,
                "variance": 0.173324563
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96282.93856,
              2371010.77,
              -41.24353996,
              -95786.99856,
              2371484.23,
              147.39646
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96282.93855849723,
                    2371010.7699959,
                    -41.24353995910419
                  ],
                  [
                    -96282.93855849723,
                    2371484.2299959,
                    -41.24353995910419
                  ],
                  [
                    -95786.99855849723,
                    2371484.2299959,
                    147.39646004089582
                  ],
                  [
                    -95786.99855849723,
                    2371010.7699959,
                    147.39646004089582
                  ],
                  [
                    -96282.93855849723,
                    2371010.7699959,
                    -41.24353995910419
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:28+00:00",
            "end_time": "2018-09-08T04:29:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2332.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58748987707287,
              71.3322621997299,
              0.918571124953365
            ],
            [
              -156.58799334960267,
              71.33661076271505,
              0.918571124953365
            ],
            [
              -156.5744715352843,
              71.33678780361689,
              3.178571124953365
            ],
            [
              -156.57397068802544,
              71.33243920096945,
              3.178571124953365
            ],
            [
              -156.58748987707287,
              71.3322621997299,
              0.918571124953365
            ]
          ]
        ]
      },
      "bbox": [
        -156.5879933,
        71.3322622,
        0.918571125,
        -156.5739707,
        71.3367878,
        3.178571125
      ],
      "properties": {
        "datetime": "2018-09-08T04:56:51Z",
        "pc:count": 2121766,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94541.47135,
            "count": 2121766,
            "maximum": -94298.2227,
            "minimum": -94794.0027,
            "name": "X",
            "position": 0,
            "stddev": 135.0351636,
            "variance": 18234.49541
          },
          {
            "average": 2372475.613,
            "count": 2121766,
            "maximum": 2372733.509,
            "minimum": 2372259.949,
            "name": "Y",
            "position": 1,
            "stddev": 128.1726886,
            "variance": 16428.2381
          },
          {
            "average": 1.649670893,
            "count": 2121766,
            "maximum": 3.178571125,
            "minimum": 0.918571125,
            "name": "Z",
            "position": 2,
            "stddev": 0.5625779368,
            "variance": 0.3164939349
          },
          {
            "average": 29768.64814,
            "count": 2121766,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15238.22867,
            "variance": 232203613.1
          },
          {
            "average": 1,
            "count": 2121766,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2121766,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4956437232,
            "count": 2121766,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999811403,
            "variance": 0.2499811407
          },
          {
            "average": 0.0005537839705,
            "count": 2121766,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02352610369,
            "variance": 0.0005534775547
          },
          {
            "average": 4.571611573,
            "count": 2121766,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.749161881,
            "variance": 14.05621481
          },
          {
            "average": 1.171614625,
            "count": 2121766,
            "maximum": 16.32600021,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.603483838,
            "variance": 74.01993416
          },
          {
            "average": 0.4685403574,
            "count": 2121766,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499009427,
            "variance": 0.2490104082
          },
          {
            "average": 409.4290393,
            "count": 2121766,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8138073189,
            "variance": 0.6622823523
          },
          {
            "average": 220416976.5,
            "count": 2121766,
            "maximum": 220417811.6,
            "minimum": 220416223.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 467.7417595,
            "variance": 218782.3536
          },
          {
            "average": 0.4685403574,
            "count": 2121766,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499009427,
            "variance": 0.2490104082
          },
          {
            "average": 0,
            "count": 2121766,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2121766,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2121766,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.117448861,
            "count": 2121766,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3219544609,
            "variance": 0.1036546749
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94794.0027,
          2372259.949,
          0.918571125,
          -94298.2227,
          2372733.509,
          3.178571125
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94794.00270249373,
                2372259.949025581,
                0.918571124953365
              ],
              [
                -94794.00270249373,
                2372733.5090255807,
                0.918571124953365
              ],
              [
                -94298.22270249373,
                2372733.5090255807,
                3.178571124953365
              ],
              [
                -94298.22270249373,
                2372259.949025581,
                3.178571124953365
              ],
              [
                -94794.00270249373,
                2372259.949025581,
                0.918571124953365
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:56:51+00:00",
        "end_time": "2018-09-08T04:30:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2332.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2332.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2332.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2332.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5879933,
            71.3322622,
            0.918571125,
            -156.5739707,
            71.3367878,
            3.178571125
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58748987707287,
                  71.3322621997299,
                  0.918571124953365
                ],
                [
                  -156.58799334960267,
                  71.33661076271505,
                  0.918571124953365
                ],
                [
                  -156.5744715352843,
                  71.33678780361689,
                  3.178571124953365
                ],
                [
                  -156.57397068802544,
                  71.33243920096945,
                  3.178571124953365
                ],
                [
                  -156.58748987707287,
                  71.3322621997299,
                  0.918571124953365
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2332.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2332.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:56:51Z",
            "pc:count": 2121766,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94541.47135,
                "count": 2121766,
                "maximum": -94298.2227,
                "minimum": -94794.0027,
                "name": "X",
                "position": 0,
                "stddev": 135.0351636,
                "variance": 18234.49541
              },
              {
                "average": 2372475.613,
                "count": 2121766,
                "maximum": 2372733.509,
                "minimum": 2372259.949,
                "name": "Y",
                "position": 1,
                "stddev": 128.1726886,
                "variance": 16428.2381
              },
              {
                "average": 1.649670893,
                "count": 2121766,
                "maximum": 3.178571125,
                "minimum": 0.918571125,
                "name": "Z",
                "position": 2,
                "stddev": 0.5625779368,
                "variance": 0.3164939349
              },
              {
                "average": 29768.64814,
                "count": 2121766,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15238.22867,
                "variance": 232203613.1
              },
              {
                "average": 1,
                "count": 2121766,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2121766,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4956437232,
                "count": 2121766,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999811403,
                "variance": 0.2499811407
              },
              {
                "average": 0.0005537839705,
                "count": 2121766,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02352610369,
                "variance": 0.0005534775547
              },
              {
                "average": 4.571611573,
                "count": 2121766,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.749161881,
                "variance": 14.05621481
              },
              {
                "average": 1.171614625,
                "count": 2121766,
                "maximum": 16.32600021,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.603483838,
                "variance": 74.01993416
              },
              {
                "average": 0.4685403574,
                "count": 2121766,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499009427,
                "variance": 0.2490104082
              },
              {
                "average": 409.4290393,
                "count": 2121766,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8138073189,
                "variance": 0.6622823523
              },
              {
                "average": 220416976.5,
                "count": 2121766,
                "maximum": 220417811.6,
                "minimum": 220416223.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 467.7417595,
                "variance": 218782.3536
              },
              {
                "average": 0.4685403574,
                "count": 2121766,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499009427,
                "variance": 0.2490104082
              },
              {
                "average": 0,
                "count": 2121766,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2121766,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2121766,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.117448861,
                "count": 2121766,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3219544609,
                "variance": 0.1036546749
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94794.0027,
              2372259.949,
              0.918571125,
              -94298.2227,
              2372733.509,
              3.178571125
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94794.00270249373,
                    2372259.949025581,
                    0.918571124953365
                  ],
                  [
                    -94794.00270249373,
                    2372733.5090255807,
                    0.918571124953365
                  ],
                  [
                    -94298.22270249373,
                    2372733.5090255807,
                    3.178571124953365
                  ],
                  [
                    -94298.22270249373,
                    2372259.949025581,
                    3.178571124953365
                  ],
                  [
                    -94794.00270249373,
                    2372259.949025581,
                    0.918571124953365
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:56:51+00:00",
            "end_time": "2018-09-08T04:30:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2263.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58899248150962,
              71.31177789750271,
              3.021893694464019
            ],
            [
              -156.5894959127034,
              71.31612695351684,
              3.021893694464019
            ],
            [
              -156.5759783122816,
              71.31630418009311,
              4.62189369446402
            ],
            [
              -156.57547750379624,
              71.31195508441759,
              4.62189369446402
            ],
            [
              -156.58899248150962,
              71.31177789750271,
              3.021893694464019
            ]
          ]
        ]
      },
      "bbox": [
        -156.5894959,
        71.3117779,
        3.021893694,
        -156.5754775,
        71.31630418,
        4.621893694
      ],
      "properties": {
        "datetime": "2018-09-08T05:43:49Z",
        "pc:count": 2934646,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94692.69542,
            "count": 2934646,
            "maximum": -94439.82707,
            "minimum": -94935.90707,
            "name": "X",
            "position": 0,
            "stddev": 134.7378511,
            "variance": 18154.28852
          },
          {
            "average": 2370269.002,
            "count": 2934646,
            "maximum": 2370508.226,
            "minimum": 2370034.546,
            "name": "Y",
            "position": 1,
            "stddev": 128.4270119,
            "variance": 16493.49738
          },
          {
            "average": 3.675144598,
            "count": 2934646,
            "maximum": 4.621893694,
            "minimum": 3.021893694,
            "name": "Z",
            "position": 2,
            "stddev": 0.1260013982,
            "variance": 0.01587635236
          },
          {
            "average": 29607.24426,
            "count": 2934646,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9217.364812,
            "variance": 84959814.08
          },
          {
            "average": 1,
            "count": 2934646,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2934646,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5005510034,
            "count": 2934646,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997816,
            "variance": 0.2499997816
          },
          {
            "average": 0.0003874402568,
            "count": 2934646,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01967969204,
            "variance": 0.0003872902789
          },
          {
            "average": 1.318961129,
            "count": 2934646,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4661186258,
            "variance": 0.2172665734
          },
          {
            "average": 0.03295293932,
            "count": 2934646,
            "maximum": 16.37400055,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.20355917,
            "variance": 104.1126197
          },
          {
            "average": 0.4861318878,
            "count": 2934646,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998077236,
            "variance": 0.2498077606
          },
          {
            "average": 413.9355609,
            "count": 2934646,
            "maximum": 416,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9120468538,
            "variance": 0.8318294636
          },
          {
            "average": 220419460.9,
            "count": 2934646,
            "maximum": 220420629.6,
            "minimum": 220418450.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 490.3744815,
            "variance": 240467.1321
          },
          {
            "average": 0.4861318878,
            "count": 2934646,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998077236,
            "variance": 0.2498077606
          },
          {
            "average": 0,
            "count": 2934646,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2934646,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2934646,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2127363914,
            "count": 2934646,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4092428084,
            "variance": 0.1674796762
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94935.90707,
          2370034.546,
          3.021893694,
          -94439.82707,
          2370508.226,
          4.621893694
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94935.90707058444,
                2370034.5458717537,
                3.021893694464019
              ],
              [
                -94935.90707058444,
                2370508.2258717534,
                3.021893694464019
              ],
              [
                -94439.82707058445,
                2370508.2258717534,
                4.62189369446402
              ],
              [
                -94439.82707058445,
                2370034.5458717537,
                4.62189369446402
              ],
              [
                -94935.90707058444,
                2370034.5458717537,
                3.021893694464019
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:43:49+00:00",
        "end_time": "2018-09-08T05:07:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2263.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2263.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2263.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2263.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5894959,
            71.3117779,
            3.021893694,
            -156.5754775,
            71.31630418,
            4.621893694
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58899248150962,
                  71.31177789750271,
                  3.021893694464019
                ],
                [
                  -156.5894959127034,
                  71.31612695351684,
                  3.021893694464019
                ],
                [
                  -156.5759783122816,
                  71.31630418009311,
                  4.62189369446402
                ],
                [
                  -156.57547750379624,
                  71.31195508441759,
                  4.62189369446402
                ],
                [
                  -156.58899248150962,
                  71.31177789750271,
                  3.021893694464019
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2263.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2263.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:43:49Z",
            "pc:count": 2934646,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94692.69542,
                "count": 2934646,
                "maximum": -94439.82707,
                "minimum": -94935.90707,
                "name": "X",
                "position": 0,
                "stddev": 134.7378511,
                "variance": 18154.28852
              },
              {
                "average": 2370269.002,
                "count": 2934646,
                "maximum": 2370508.226,
                "minimum": 2370034.546,
                "name": "Y",
                "position": 1,
                "stddev": 128.4270119,
                "variance": 16493.49738
              },
              {
                "average": 3.675144598,
                "count": 2934646,
                "maximum": 4.621893694,
                "minimum": 3.021893694,
                "name": "Z",
                "position": 2,
                "stddev": 0.1260013982,
                "variance": 0.01587635236
              },
              {
                "average": 29607.24426,
                "count": 2934646,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9217.364812,
                "variance": 84959814.08
              },
              {
                "average": 1,
                "count": 2934646,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2934646,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5005510034,
                "count": 2934646,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997816,
                "variance": 0.2499997816
              },
              {
                "average": 0.0003874402568,
                "count": 2934646,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01967969204,
                "variance": 0.0003872902789
              },
              {
                "average": 1.318961129,
                "count": 2934646,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4661186258,
                "variance": 0.2172665734
              },
              {
                "average": 0.03295293932,
                "count": 2934646,
                "maximum": 16.37400055,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.20355917,
                "variance": 104.1126197
              },
              {
                "average": 0.4861318878,
                "count": 2934646,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998077236,
                "variance": 0.2498077606
              },
              {
                "average": 413.9355609,
                "count": 2934646,
                "maximum": 416,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9120468538,
                "variance": 0.8318294636
              },
              {
                "average": 220419460.9,
                "count": 2934646,
                "maximum": 220420629.6,
                "minimum": 220418450.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 490.3744815,
                "variance": 240467.1321
              },
              {
                "average": 0.4861318878,
                "count": 2934646,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998077236,
                "variance": 0.2498077606
              },
              {
                "average": 0,
                "count": 2934646,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2934646,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2934646,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2127363914,
                "count": 2934646,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4092428084,
                "variance": 0.1674796762
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94935.90707,
              2370034.546,
              3.021893694,
              -94439.82707,
              2370508.226,
              4.621893694
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94935.90707058444,
                    2370034.5458717537,
                    3.021893694464019
                  ],
                  [
                    -94935.90707058444,
                    2370508.2258717534,
                    3.021893694464019
                  ],
                  [
                    -94439.82707058445,
                    2370508.2258717534,
                    4.62189369446402
                  ],
                  [
                    -94439.82707058445,
                    2370034.5458717537,
                    4.62189369446402
                  ],
                  [
                    -94935.90707058444,
                    2370034.5458717537,
                    3.021893694464019
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:43:49+00:00",
            "end_time": "2018-09-08T05:07:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2342.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58719872987672,
              71.33635878752969,
              0.914192769034758
            ],
            [
              -156.5877021954948,
              71.34070710520146,
              0.914192769034758
            ],
            [
              -156.5741686263926,
              71.34088425208115,
              1.314192769034758
            ],
            [
              -156.57366778858844,
              71.33653589471618,
              1.314192769034758
            ],
            [
              -156.58719872987672,
              71.33635878752969,
              0.914192769034758
            ]
          ]
        ]
      },
      "bbox": [
        -156.5877022,
        71.33635879,
        0.914192769,
        -156.5736678,
        71.34088425,
        1.314192769
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:38Z",
        "pc:count": 1580794,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94525.77749,
            "count": 1580794,
            "maximum": -94269.8597,
            "minimum": -94765.9797,
            "name": "X",
            "position": 0,
            "stddev": 136.8182613,
            "variance": 18719.23664
          },
          {
            "average": 2372937.17,
            "count": 1580794,
            "maximum": 2373178.497,
            "minimum": 2372704.977,
            "name": "Y",
            "position": 1,
            "stddev": 129.2798465,
            "variance": 16713.2787
          },
          {
            "average": 1.091134546,
            "count": 1580794,
            "maximum": 1.314192769,
            "minimum": 0.914192769,
            "name": "Z",
            "position": 2,
            "stddev": 0.03708245351,
            "variance": 0.001375108358
          },
          {
            "average": 16334.74644,
            "count": 1580794,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12559.518,
            "variance": 157741492.5
          },
          {
            "average": 1,
            "count": 1580794,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1580794,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5076638702,
            "count": 1580794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999414198,
            "variance": 0.2499414232
          },
          {
            "average": 0.0006737120713,
            "count": 1580794,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02594722739,
            "variance": 0.0006732586092
          },
          {
            "average": 8.238700299,
            "count": 1580794,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.806199019,
            "variance": 3.262354897
          },
          {
            "average": -2.203331046,
            "count": 1580794,
            "maximum": 16.35000038,
            "minimum": -15.72599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.655667888,
            "variance": 44.29791504
          },
          {
            "average": 0.4790719094,
            "count": 1580794,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499561981,
            "variance": 0.2495621729
          },
          {
            "average": 408.4744306,
            "count": 1580794,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7032361059,
            "variance": 0.4945410207
          },
          {
            "average": 220416443.4,
            "count": 1580794,
            "maximum": 220417378.5,
            "minimum": 220415530.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 384.0972541,
            "variance": 147530.7006
          },
          {
            "average": 0.4790719094,
            "count": 1580794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499561981,
            "variance": 0.2495621729
          },
          {
            "average": 0,
            "count": 1580794,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1580794,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1580794,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04378369351,
            "count": 1580794,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2046135581,
            "variance": 0.04186670818
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94765.9797,
          2372704.977,
          0.914192769,
          -94269.8597,
          2373178.497,
          1.314192769
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94765.9796979976,
                2372704.976803813,
                0.914192769034758
              ],
              [
                -94765.9796979976,
                2373178.4968038127,
                0.914192769034758
              ],
              [
                -94269.8596979976,
                2373178.4968038127,
                1.314192769034758
              ],
              [
                -94269.8596979976,
                2372704.976803813,
                1.314192769034758
              ],
              [
                -94765.9796979976,
                2372704.976803813,
                0.914192769034758
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:38+00:00",
        "end_time": "2018-09-08T04:18:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2342.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2342.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2342.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2342.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5877022,
            71.33635879,
            0.914192769,
            -156.5736678,
            71.34088425,
            1.314192769
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58719872987672,
                  71.33635878752969,
                  0.914192769034758
                ],
                [
                  -156.5877021954948,
                  71.34070710520146,
                  0.914192769034758
                ],
                [
                  -156.5741686263926,
                  71.34088425208115,
                  1.314192769034758
                ],
                [
                  -156.57366778858844,
                  71.33653589471618,
                  1.314192769034758
                ],
                [
                  -156.58719872987672,
                  71.33635878752969,
                  0.914192769034758
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2342.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2342.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:38Z",
            "pc:count": 1580794,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94525.77749,
                "count": 1580794,
                "maximum": -94269.8597,
                "minimum": -94765.9797,
                "name": "X",
                "position": 0,
                "stddev": 136.8182613,
                "variance": 18719.23664
              },
              {
                "average": 2372937.17,
                "count": 1580794,
                "maximum": 2373178.497,
                "minimum": 2372704.977,
                "name": "Y",
                "position": 1,
                "stddev": 129.2798465,
                "variance": 16713.2787
              },
              {
                "average": 1.091134546,
                "count": 1580794,
                "maximum": 1.314192769,
                "minimum": 0.914192769,
                "name": "Z",
                "position": 2,
                "stddev": 0.03708245351,
                "variance": 0.001375108358
              },
              {
                "average": 16334.74644,
                "count": 1580794,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12559.518,
                "variance": 157741492.5
              },
              {
                "average": 1,
                "count": 1580794,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1580794,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5076638702,
                "count": 1580794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999414198,
                "variance": 0.2499414232
              },
              {
                "average": 0.0006737120713,
                "count": 1580794,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02594722739,
                "variance": 0.0006732586092
              },
              {
                "average": 8.238700299,
                "count": 1580794,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.806199019,
                "variance": 3.262354897
              },
              {
                "average": -2.203331046,
                "count": 1580794,
                "maximum": 16.35000038,
                "minimum": -15.72599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.655667888,
                "variance": 44.29791504
              },
              {
                "average": 0.4790719094,
                "count": 1580794,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499561981,
                "variance": 0.2495621729
              },
              {
                "average": 408.4744306,
                "count": 1580794,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7032361059,
                "variance": 0.4945410207
              },
              {
                "average": 220416443.4,
                "count": 1580794,
                "maximum": 220417378.5,
                "minimum": 220415530.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 384.0972541,
                "variance": 147530.7006
              },
              {
                "average": 0.4790719094,
                "count": 1580794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499561981,
                "variance": 0.2495621729
              },
              {
                "average": 0,
                "count": 1580794,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1580794,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1580794,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04378369351,
                "count": 1580794,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2046135581,
                "variance": 0.04186670818
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94765.9797,
              2372704.977,
              0.914192769,
              -94269.8597,
              2373178.497,
              1.314192769
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94765.9796979976,
                    2372704.976803813,
                    0.914192769034758
                  ],
                  [
                    -94765.9796979976,
                    2373178.4968038127,
                    0.914192769034758
                  ],
                  [
                    -94269.8596979976,
                    2373178.4968038127,
                    1.314192769034758
                  ],
                  [
                    -94269.8596979976,
                    2372704.976803813,
                    1.314192769034758
                  ],
                  [
                    -94765.9796979976,
                    2372704.976803813,
                    0.914192769034758
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:38+00:00",
            "end_time": "2018-09-08T04:18:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2242.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.64038798856387,
              71.30805656903183,
              2.648236600871747
            ],
            [
              -156.6409013447364,
              71.31240556640057,
              2.648236600871747
            ],
            [
              -156.6273864020087,
              71.3125863141024,
              3.888236600871747
            ],
            [
              -156.62687566746425,
              71.30823727629358,
              3.888236600871747
            ],
            [
              -156.64038798856387,
              71.30805656903183,
              2.648236600871747
            ]
          ]
        ]
      },
      "bbox": [
        -156.6409013,
        71.30805657,
        2.648236601,
        -156.6268757,
        71.31258631,
        3.888236601
      ],
      "properties": {
        "datetime": "2018-09-08T05:16:09Z",
        "pc:count": 3086381,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96589.79853,
            "count": 3086381,
            "maximum": -96339.56668,
            "minimum": -96835.64668,
            "name": "X",
            "position": 0,
            "stddev": 135.1024046,
            "variance": 18252.65974
          },
          {
            "average": 2369941.134,
            "count": 3086381,
            "maximum": 2370177.752,
            "minimum": 2369704.052,
            "name": "Y",
            "position": 1,
            "stddev": 129.4461537,
            "variance": 16756.30671
          },
          {
            "average": 3.014718801,
            "count": 3086381,
            "maximum": 3.888236601,
            "minimum": 2.648236601,
            "name": "Z",
            "position": 2,
            "stddev": 0.275682166,
            "variance": 0.07600065663
          },
          {
            "average": 26803.57331,
            "count": 3086381,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10016.05893,
            "variance": 100321436.6
          },
          {
            "average": 1,
            "count": 3086381,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3086381,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.499359282,
            "count": 3086381,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996705,
            "variance": 0.2499996705
          },
          {
            "average": 0.0004335174432,
            "count": 3086381,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02081657143,
            "variance": 0.0004333296463
          },
          {
            "average": 1.307284486,
            "count": 3086381,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4613796353,
            "variance": 0.2128711679
          },
          {
            "average": -0.6948293067,
            "count": 3086381,
            "maximum": 16.29599953,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.33861722,
            "variance": 106.8870059
          },
          {
            "average": 0.4574088552,
            "count": 3086381,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4981827725,
            "variance": 0.2481860748
          },
          {
            "average": 411.3421616,
            "count": 3086381,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9609942007,
            "variance": 0.9235098538
          },
          {
            "average": 220418054.9,
            "count": 3086381,
            "maximum": 220418969.3,
            "minimum": 220417303.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 532.4019298,
            "variance": 283451.8149
          },
          {
            "average": 0.4574088552,
            "count": 3086381,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4981827725,
            "variance": 0.2481860748
          },
          {
            "average": 0,
            "count": 3086381,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3086381,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3086381,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2244651584,
            "count": 3086381,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4172296819,
            "variance": 0.1740806075
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96835.64668,
          2369704.052,
          2.648236601,
          -96339.56668,
          2370177.752,
          3.888236601
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96835.64668012995,
                2369704.051956179,
                2.648236600871747
              ],
              [
                -96835.64668012995,
                2370177.7519561793,
                2.648236600871747
              ],
              [
                -96339.56668012997,
                2370177.7519561793,
                3.888236600871747
              ],
              [
                -96339.56668012997,
                2369704.051956179,
                3.888236600871747
              ],
              [
                -96835.64668012995,
                2369704.051956179,
                2.648236600871747
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:16:09+00:00",
        "end_time": "2018-09-08T04:48:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2242.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2242.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2242.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2242.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6409013,
            71.30805657,
            2.648236601,
            -156.6268757,
            71.31258631,
            3.888236601
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.64038798856387,
                  71.30805656903183,
                  2.648236600871747
                ],
                [
                  -156.6409013447364,
                  71.31240556640057,
                  2.648236600871747
                ],
                [
                  -156.6273864020087,
                  71.3125863141024,
                  3.888236600871747
                ],
                [
                  -156.62687566746425,
                  71.30823727629358,
                  3.888236600871747
                ],
                [
                  -156.64038798856387,
                  71.30805656903183,
                  2.648236600871747
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2242.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2242.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:16:09Z",
            "pc:count": 3086381,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96589.79853,
                "count": 3086381,
                "maximum": -96339.56668,
                "minimum": -96835.64668,
                "name": "X",
                "position": 0,
                "stddev": 135.1024046,
                "variance": 18252.65974
              },
              {
                "average": 2369941.134,
                "count": 3086381,
                "maximum": 2370177.752,
                "minimum": 2369704.052,
                "name": "Y",
                "position": 1,
                "stddev": 129.4461537,
                "variance": 16756.30671
              },
              {
                "average": 3.014718801,
                "count": 3086381,
                "maximum": 3.888236601,
                "minimum": 2.648236601,
                "name": "Z",
                "position": 2,
                "stddev": 0.275682166,
                "variance": 0.07600065663
              },
              {
                "average": 26803.57331,
                "count": 3086381,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10016.05893,
                "variance": 100321436.6
              },
              {
                "average": 1,
                "count": 3086381,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3086381,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.499359282,
                "count": 3086381,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996705,
                "variance": 0.2499996705
              },
              {
                "average": 0.0004335174432,
                "count": 3086381,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02081657143,
                "variance": 0.0004333296463
              },
              {
                "average": 1.307284486,
                "count": 3086381,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4613796353,
                "variance": 0.2128711679
              },
              {
                "average": -0.6948293067,
                "count": 3086381,
                "maximum": 16.29599953,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.33861722,
                "variance": 106.8870059
              },
              {
                "average": 0.4574088552,
                "count": 3086381,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4981827725,
                "variance": 0.2481860748
              },
              {
                "average": 411.3421616,
                "count": 3086381,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9609942007,
                "variance": 0.9235098538
              },
              {
                "average": 220418054.9,
                "count": 3086381,
                "maximum": 220418969.3,
                "minimum": 220417303.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 532.4019298,
                "variance": 283451.8149
              },
              {
                "average": 0.4574088552,
                "count": 3086381,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4981827725,
                "variance": 0.2481860748
              },
              {
                "average": 0,
                "count": 3086381,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3086381,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3086381,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2244651584,
                "count": 3086381,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4172296819,
                "variance": 0.1740806075
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96835.64668,
              2369704.052,
              2.648236601,
              -96339.56668,
              2370177.752,
              3.888236601
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96835.64668012995,
                    2369704.051956179,
                    2.648236600871747
                  ],
                  [
                    -96835.64668012995,
                    2370177.7519561793,
                    2.648236600871747
                  ],
                  [
                    -96339.56668012997,
                    2370177.7519561793,
                    3.888236600871747
                  ],
                  [
                    -96339.56668012997,
                    2369704.051956179,
                    3.888236600871747
                  ],
                  [
                    -96835.64668012995,
                    2369704.051956179,
                    2.648236600871747
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:16:09+00:00",
            "end_time": "2018-09-08T04:48:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2374.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56039532326966,
              71.3525522838514,
              0.851307824842328
            ],
            [
              -156.5608938524709,
              71.35690041512649,
              0.851307824842328
            ],
            [
              -156.54734698732392,
              71.35707578420298,
              18.871307824842326
            ],
            [
              -156.5468510901032,
              71.35272761359788,
              18.871307824842326
            ],
            [
              -156.56039532326966,
              71.3525522838514,
              0.851307824842328
            ]
          ]
        ]
      },
      "bbox": [
        -156.5608939,
        71.35255228,
        0.8513078248,
        -156.5468511,
        71.35707578,
        18.87130782
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:14Z",
        "pc:count": 2098504,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93463.29458,
            "count": 2098504,
            "maximum": -93220.53657,
            "minimum": -93716.77657,
            "name": "X",
            "position": 0,
            "stddev": 134.5119221,
            "variance": 18093.45719
          },
          {
            "average": 2374660.302,
            "count": 2098504,
            "maximum": 2374901.077,
            "minimum": 2374427.637,
            "name": "Y",
            "position": 1,
            "stddev": 126.80826,
            "variance": 16080.33481
          },
          {
            "average": 1.70732321,
            "count": 2098504,
            "maximum": 18.87130782,
            "minimum": 0.8513078248,
            "name": "Z",
            "position": 2,
            "stddev": 0.9748252812,
            "variance": 0.9502843289
          },
          {
            "average": 15536.98795,
            "count": 2098504,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9692.047552,
            "variance": 93935785.75
          },
          {
            "average": 1.000009054,
            "count": 2098504,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0030089851,
            "variance": 9.053991332e-06
          },
          {
            "average": 1.000018108,
            "count": 2098504,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004255328273,
            "variance": 1.810781871e-05
          },
          {
            "average": 0.5064007502,
            "count": 2098504,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999591478,
            "variance": 0.2499591495
          },
          {
            "average": 0.0005422910797,
            "count": 2098504,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02328083457,
            "variance": 0.0005419972584
          },
          {
            "average": 5.816736113,
            "count": 2098504,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.626546743,
            "variance": 13.15184128
          },
          {
            "average": -1.417240684,
            "count": 2098504,
            "maximum": 16.3560009,
            "minimum": -15.70800018,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.446362092,
            "variance": 71.34103259
          },
          {
            "average": 0.4875063378,
            "count": 2098504,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998440031,
            "variance": 0.2498440275
          },
          {
            "average": 406.688367,
            "count": 2098504,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7890550777,
            "variance": 0.6226079156
          },
          {
            "average": 220415436.9,
            "count": 2098504,
            "maximum": 220416274.2,
            "minimum": 220414368.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 441.7169938,
            "variance": 195113.9027
          },
          {
            "average": 0.4875063378,
            "count": 2098504,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998440031,
            "variance": 0.2498440275
          },
          {
            "average": 0,
            "count": 2098504,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2098504,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2098504,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08863552321,
            "count": 2098504,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2842170046,
            "variance": 0.08077930573
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93716.77657,
          2374427.637,
          0.8513078248,
          -93220.53657,
          2374901.077,
          18.87130782
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93716.7765679996,
                2374427.636501337,
                0.851307824842328
              ],
              [
                -93716.7765679996,
                2374901.0765013373,
                0.851307824842328
              ],
              [
                -93220.5365679996,
                2374901.0765013373,
                18.871307824842326
              ],
              [
                -93220.5365679996,
                2374427.636501337,
                18.871307824842326
              ],
              [
                -93716.7765679996,
                2374427.636501337,
                0.851307824842328
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:14+00:00",
        "end_time": "2018-09-08T03:59:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2374.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2374.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2374.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2374.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5608939,
            71.35255228,
            0.8513078248,
            -156.5468511,
            71.35707578,
            18.87130782
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56039532326966,
                  71.3525522838514,
                  0.851307824842328
                ],
                [
                  -156.5608938524709,
                  71.35690041512649,
                  0.851307824842328
                ],
                [
                  -156.54734698732392,
                  71.35707578420298,
                  18.871307824842326
                ],
                [
                  -156.5468510901032,
                  71.35272761359788,
                  18.871307824842326
                ],
                [
                  -156.56039532326966,
                  71.3525522838514,
                  0.851307824842328
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2374.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2374.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:14Z",
            "pc:count": 2098504,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93463.29458,
                "count": 2098504,
                "maximum": -93220.53657,
                "minimum": -93716.77657,
                "name": "X",
                "position": 0,
                "stddev": 134.5119221,
                "variance": 18093.45719
              },
              {
                "average": 2374660.302,
                "count": 2098504,
                "maximum": 2374901.077,
                "minimum": 2374427.637,
                "name": "Y",
                "position": 1,
                "stddev": 126.80826,
                "variance": 16080.33481
              },
              {
                "average": 1.70732321,
                "count": 2098504,
                "maximum": 18.87130782,
                "minimum": 0.8513078248,
                "name": "Z",
                "position": 2,
                "stddev": 0.9748252812,
                "variance": 0.9502843289
              },
              {
                "average": 15536.98795,
                "count": 2098504,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9692.047552,
                "variance": 93935785.75
              },
              {
                "average": 1.000009054,
                "count": 2098504,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0030089851,
                "variance": 9.053991332e-06
              },
              {
                "average": 1.000018108,
                "count": 2098504,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004255328273,
                "variance": 1.810781871e-05
              },
              {
                "average": 0.5064007502,
                "count": 2098504,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999591478,
                "variance": 0.2499591495
              },
              {
                "average": 0.0005422910797,
                "count": 2098504,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02328083457,
                "variance": 0.0005419972584
              },
              {
                "average": 5.816736113,
                "count": 2098504,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.626546743,
                "variance": 13.15184128
              },
              {
                "average": -1.417240684,
                "count": 2098504,
                "maximum": 16.3560009,
                "minimum": -15.70800018,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.446362092,
                "variance": 71.34103259
              },
              {
                "average": 0.4875063378,
                "count": 2098504,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998440031,
                "variance": 0.2498440275
              },
              {
                "average": 406.688367,
                "count": 2098504,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7890550777,
                "variance": 0.6226079156
              },
              {
                "average": 220415436.9,
                "count": 2098504,
                "maximum": 220416274.2,
                "minimum": 220414368.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 441.7169938,
                "variance": 195113.9027
              },
              {
                "average": 0.4875063378,
                "count": 2098504,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998440031,
                "variance": 0.2498440275
              },
              {
                "average": 0,
                "count": 2098504,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2098504,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2098504,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08863552321,
                "count": 2098504,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2842170046,
                "variance": 0.08077930573
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93716.77657,
              2374427.637,
              0.8513078248,
              -93220.53657,
              2374901.077,
              18.87130782
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93716.7765679996,
                    2374427.636501337,
                    0.851307824842328
                  ],
                  [
                    -93716.7765679996,
                    2374901.0765013373,
                    0.851307824842328
                  ],
                  [
                    -93220.5365679996,
                    2374901.0765013373,
                    18.871307824842326
                  ],
                  [
                    -93220.5365679996,
                    2374427.636501337,
                    18.871307824842326
                  ],
                  [
                    -93716.7765679996,
                    2374427.636501337,
                    0.851307824842328
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:14+00:00",
            "end_time": "2018-09-08T03:59:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2182.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62848116520482,
              71.29567353968466,
              -42.019165818505776
            ],
            [
              -156.62899192499245,
              71.30002220366501,
              -42.019165818505776
            ],
            [
              -156.6154876281902,
              71.30020207636393,
              3.340834181494223
            ],
            [
              -156.61497948657293,
              71.29585337217107,
              3.340834181494223
            ],
            [
              -156.62848116520482,
              71.29567353968466,
              -42.019165818505776
            ]
          ]
        ]
      },
      "bbox": [
        -156.6289919,
        71.29567354,
        -42.01916582,
        -156.6149795,
        71.30020208,
        3.340834181
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:03Z",
        "pc:count": 3712269,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96198.45577,
            "count": 3712269,
            "maximum": -95956.56535,
            "minimum": -96452.52535,
            "name": "X",
            "position": 0,
            "stddev": 133.5897037,
            "variance": 17846.20894
          },
          {
            "average": 2368585.861,
            "count": 3712269,
            "maximum": 2368813.695,
            "minimum": 2368339.995,
            "name": "Y",
            "position": 1,
            "stddev": 127.0161949,
            "variance": 16133.11376
          },
          {
            "average": 2.632136932,
            "count": 3712269,
            "maximum": 3.340834181,
            "minimum": -42.01916582,
            "name": "Z",
            "position": 2,
            "stddev": 0.2071421559,
            "variance": 0.04290787273
          },
          {
            "average": 29728.27516,
            "count": 3712269,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11630.02131,
            "variance": 135257395.6
          },
          {
            "average": 1.000000269,
            "count": 3712269,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005190154435,
            "variance": 2.693770306e-07
          },
          {
            "average": 1.000000539,
            "count": 3712269,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007339985804,
            "variance": 5.387539161e-07
          },
          {
            "average": 0.4998891514,
            "count": 3712269,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000551,
            "variance": 0.2500000551
          },
          {
            "average": 0.0003356437801,
            "count": 3712269,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01831751112,
            "variance": 0.0003355312138
          },
          {
            "average": 1.626473459,
            "count": 3712269,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.41603446,
            "variance": 2.005153593
          },
          {
            "average": 1.405768705,
            "count": 3712269,
            "maximum": 20.44799995,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.6274109,
            "variance": 112.9418624
          },
          {
            "average": 0.4857592486,
            "count": 3712269,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997972272,
            "variance": 0.2497972683
          },
          {
            "average": 420.9857804,
            "count": 3712269,
            "maximum": 456,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.61636963,
            "variance": 213.6382611
          },
          {
            "average": 220464825.5,
            "count": 3712269,
            "maximum": 220722983.2,
            "minimum": 220418971.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 107585.1243,
            "variance": 11574558960.0
          },
          {
            "average": 0.4857592486,
            "count": 3712269,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997972272,
            "variance": 0.2497972683
          },
          {
            "average": 0,
            "count": 3712269,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3712269,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3712269,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2098627551,
            "count": 3712269,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4072105399,
            "variance": 0.1658204238
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96452.52535,
          2368339.995,
          -42.01916582,
          -95956.56535,
          2368813.695,
          3.340834181
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96452.52534732959,
                2368339.994664351,
                -42.019165818505776
              ],
              [
                -96452.52534732959,
                2368813.694664351,
                -42.019165818505776
              ],
              [
                -95956.5653473296,
                2368813.694664351,
                3.340834181494223
              ],
              [
                -95956.5653473296,
                2368339.994664351,
                3.340834181494223
              ],
              [
                -96452.52534732959,
                2368339.994664351,
                -42.019165818505776
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:03+00:00",
        "end_time": "2018-09-08T05:16:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2182.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2182.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2182.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2182.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6289919,
            71.29567354,
            -42.01916582,
            -156.6149795,
            71.30020208,
            3.340834181
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62848116520482,
                  71.29567353968466,
                  -42.019165818505776
                ],
                [
                  -156.62899192499245,
                  71.30002220366501,
                  -42.019165818505776
                ],
                [
                  -156.6154876281902,
                  71.30020207636393,
                  3.340834181494223
                ],
                [
                  -156.61497948657293,
                  71.29585337217107,
                  3.340834181494223
                ],
                [
                  -156.62848116520482,
                  71.29567353968466,
                  -42.019165818505776
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2182.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2182.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:03Z",
            "pc:count": 3712269,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96198.45577,
                "count": 3712269,
                "maximum": -95956.56535,
                "minimum": -96452.52535,
                "name": "X",
                "position": 0,
                "stddev": 133.5897037,
                "variance": 17846.20894
              },
              {
                "average": 2368585.861,
                "count": 3712269,
                "maximum": 2368813.695,
                "minimum": 2368339.995,
                "name": "Y",
                "position": 1,
                "stddev": 127.0161949,
                "variance": 16133.11376
              },
              {
                "average": 2.632136932,
                "count": 3712269,
                "maximum": 3.340834181,
                "minimum": -42.01916582,
                "name": "Z",
                "position": 2,
                "stddev": 0.2071421559,
                "variance": 0.04290787273
              },
              {
                "average": 29728.27516,
                "count": 3712269,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11630.02131,
                "variance": 135257395.6
              },
              {
                "average": 1.000000269,
                "count": 3712269,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005190154435,
                "variance": 2.693770306e-07
              },
              {
                "average": 1.000000539,
                "count": 3712269,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007339985804,
                "variance": 5.387539161e-07
              },
              {
                "average": 0.4998891514,
                "count": 3712269,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000551,
                "variance": 0.2500000551
              },
              {
                "average": 0.0003356437801,
                "count": 3712269,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01831751112,
                "variance": 0.0003355312138
              },
              {
                "average": 1.626473459,
                "count": 3712269,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.41603446,
                "variance": 2.005153593
              },
              {
                "average": 1.405768705,
                "count": 3712269,
                "maximum": 20.44799995,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.6274109,
                "variance": 112.9418624
              },
              {
                "average": 0.4857592486,
                "count": 3712269,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997972272,
                "variance": 0.2497972683
              },
              {
                "average": 420.9857804,
                "count": 3712269,
                "maximum": 456,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.61636963,
                "variance": 213.6382611
              },
              {
                "average": 220464825.5,
                "count": 3712269,
                "maximum": 220722983.2,
                "minimum": 220418971.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 107585.1243,
                "variance": 11574558960.0
              },
              {
                "average": 0.4857592486,
                "count": 3712269,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997972272,
                "variance": 0.2497972683
              },
              {
                "average": 0,
                "count": 3712269,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3712269,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3712269,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2098627551,
                "count": 3712269,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4072105399,
                "variance": 0.1658204238
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96452.52535,
              2368339.995,
              -42.01916582,
              -95956.56535,
              2368813.695,
              3.340834181
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96452.52534732959,
                    2368339.994664351,
                    -42.019165818505776
                  ],
                  [
                    -96452.52534732959,
                    2368813.694664351,
                    -42.019165818505776
                  ],
                  [
                    -95956.5653473296,
                    2368813.694664351,
                    3.340834181494223
                  ],
                  [
                    -95956.5653473296,
                    2368339.994664351,
                    3.340834181494223
                  ],
                  [
                    -96452.52534732959,
                    2368339.994664351,
                    -42.019165818505776
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:03+00:00",
            "end_time": "2018-09-08T05:16:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2293.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5883931845646,
              71.31997164369214,
              3.197858184167385
            ],
            [
              -156.58889647101336,
              71.32431910656254,
              3.197858184167385
            ],
            [
              -156.57543770164781,
              71.32449546805753,
              19.197858184167387
            ],
            [
              -156.57493702634892,
              71.3201479657151,
              19.197858184167387
            ],
            [
              -156.5883931845646,
              71.31997164369214,
              3.197858184167385
            ]
          ]
        ]
      },
      "bbox": [
        -156.5888965,
        71.31997164,
        3.197858184,
        -156.574937,
        71.32449547,
        19.19785818
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:45Z",
        "pc:count": 2873754,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94630.46018,
            "count": 2873754,
            "maximum": -94385.4556,
            "minimum": -94879.1956,
            "name": "X",
            "position": 0,
            "stddev": 137.2478196,
            "variance": 18836.96398
          },
          {
            "average": 2371164.166,
            "count": 2873754,
            "maximum": 2371398.229,
            "minimum": 2370924.749,
            "name": "Y",
            "position": 1,
            "stddev": 129.7364379,
            "variance": 16831.54332
          },
          {
            "average": 3.735957305,
            "count": 2873754,
            "maximum": 19.19785818,
            "minimum": 3.197858184,
            "name": "Z",
            "position": 2,
            "stddev": 0.1668608687,
            "variance": 0.0278425495
          },
          {
            "average": 25858.39483,
            "count": 2873754,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9564.666041,
            "variance": 91482836.48
          },
          {
            "average": 1.000000696,
            "count": 2873754,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008342383065,
            "variance": 6.959535521e-07
          },
          {
            "average": 1.000001392,
            "count": 2873754,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001179790717,
            "variance": 1.391906135e-06
          },
          {
            "average": 0.5010829041,
            "count": 2873754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989143,
            "variance": 0.2499989143
          },
          {
            "average": 0.0004481942435,
            "count": 2873754,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02116585744,
            "variance": 0.0004479935213
          },
          {
            "average": 1.326231821,
            "count": 2873754,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8546725375,
            "variance": 0.7304651463
          },
          {
            "average": 1.045832261,
            "count": 2873754,
            "maximum": 16.36199951,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53913204,
            "variance": 111.0733042
          },
          {
            "average": 0.5136657487,
            "count": 2873754,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998132994,
            "variance": 0.2498133342
          },
          {
            "average": 412.0797573,
            "count": 2873754,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9371471134,
            "variance": 0.8782447122
          },
          {
            "average": 220418451,
            "count": 2873754,
            "maximum": 220419545.8,
            "minimum": 220417348.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 521.730901,
            "variance": 272203.1331
          },
          {
            "average": 0.5136657487,
            "count": 2873754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998132994,
            "variance": 0.2498133342
          },
          {
            "average": 0,
            "count": 2873754,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2873754,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2873754,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2566322657,
            "count": 2873754,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4367747844,
            "variance": 0.1907722123
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94879.1956,
          2370924.749,
          3.197858184,
          -94385.4556,
          2371398.229,
          19.19785818
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94879.19560200145,
                2370924.748922676,
                3.197858184167385
              ],
              [
                -94879.19560200145,
                2371398.2289226763,
                3.197858184167385
              ],
              [
                -94385.45560200146,
                2371398.2289226763,
                19.197858184167387
              ],
              [
                -94385.45560200146,
                2370924.748922676,
                19.197858184167387
              ],
              [
                -94879.19560200145,
                2370924.748922676,
                3.197858184167385
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:45+00:00",
        "end_time": "2018-09-08T04:49:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2293.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2293.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2293.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2293.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5888965,
            71.31997164,
            3.197858184,
            -156.574937,
            71.32449547,
            19.19785818
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5883931845646,
                  71.31997164369214,
                  3.197858184167385
                ],
                [
                  -156.58889647101336,
                  71.32431910656254,
                  3.197858184167385
                ],
                [
                  -156.57543770164781,
                  71.32449546805753,
                  19.197858184167387
                ],
                [
                  -156.57493702634892,
                  71.3201479657151,
                  19.197858184167387
                ],
                [
                  -156.5883931845646,
                  71.31997164369214,
                  3.197858184167385
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2293.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2293.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:45Z",
            "pc:count": 2873754,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94630.46018,
                "count": 2873754,
                "maximum": -94385.4556,
                "minimum": -94879.1956,
                "name": "X",
                "position": 0,
                "stddev": 137.2478196,
                "variance": 18836.96398
              },
              {
                "average": 2371164.166,
                "count": 2873754,
                "maximum": 2371398.229,
                "minimum": 2370924.749,
                "name": "Y",
                "position": 1,
                "stddev": 129.7364379,
                "variance": 16831.54332
              },
              {
                "average": 3.735957305,
                "count": 2873754,
                "maximum": 19.19785818,
                "minimum": 3.197858184,
                "name": "Z",
                "position": 2,
                "stddev": 0.1668608687,
                "variance": 0.0278425495
              },
              {
                "average": 25858.39483,
                "count": 2873754,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9564.666041,
                "variance": 91482836.48
              },
              {
                "average": 1.000000696,
                "count": 2873754,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008342383065,
                "variance": 6.959535521e-07
              },
              {
                "average": 1.000001392,
                "count": 2873754,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001179790717,
                "variance": 1.391906135e-06
              },
              {
                "average": 0.5010829041,
                "count": 2873754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989143,
                "variance": 0.2499989143
              },
              {
                "average": 0.0004481942435,
                "count": 2873754,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02116585744,
                "variance": 0.0004479935213
              },
              {
                "average": 1.326231821,
                "count": 2873754,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8546725375,
                "variance": 0.7304651463
              },
              {
                "average": 1.045832261,
                "count": 2873754,
                "maximum": 16.36199951,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53913204,
                "variance": 111.0733042
              },
              {
                "average": 0.5136657487,
                "count": 2873754,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998132994,
                "variance": 0.2498133342
              },
              {
                "average": 412.0797573,
                "count": 2873754,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9371471134,
                "variance": 0.8782447122
              },
              {
                "average": 220418451,
                "count": 2873754,
                "maximum": 220419545.8,
                "minimum": 220417348.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 521.730901,
                "variance": 272203.1331
              },
              {
                "average": 0.5136657487,
                "count": 2873754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998132994,
                "variance": 0.2498133342
              },
              {
                "average": 0,
                "count": 2873754,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2873754,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2873754,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2566322657,
                "count": 2873754,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4367747844,
                "variance": 0.1907722123
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94879.1956,
              2370924.749,
              3.197858184,
              -94385.4556,
              2371398.229,
              19.19785818
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94879.19560200145,
                    2370924.748922676,
                    3.197858184167385
                  ],
                  [
                    -94879.19560200145,
                    2371398.2289226763,
                    3.197858184167385
                  ],
                  [
                    -94385.45560200146,
                    2371398.2289226763,
                    19.197858184167387
                  ],
                  [
                    -94385.45560200146,
                    2370924.748922676,
                    19.197858184167387
                  ],
                  [
                    -94879.19560200145,
                    2370924.748922676,
                    3.197858184167385
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:45+00:00",
            "end_time": "2018-09-08T04:49:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2333.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57470743202228,
              71.33216528506988,
              0.884954214595679
            ],
            [
              -156.5752084587534,
              71.3365142450568,
              0.884954214595679
            ],
            [
              -156.56167951081946,
              71.3366905015345,
              3.104954214595679
            ],
            [
              -156.56118111101364,
              71.33234150205769,
              3.104954214595679
            ],
            [
              -156.57470743202228,
              71.33216528506988,
              0.884954214595679
            ]
          ]
        ]
      },
      "bbox": [
        -156.5752085,
        71.33216529,
        0.8849542146,
        -156.5611811,
        71.3366905,
        3.104954215
      ],
      "properties": {
        "datetime": "2018-09-08T05:08:10Z",
        "pc:count": 1636338,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94097.67787,
            "count": 1636338,
            "maximum": -93830.31535,
            "minimum": -94326.35535,
            "name": "X",
            "position": 0,
            "stddev": 139.7545831,
            "variance": 19531.3435
          },
          {
            "average": 2372449.084,
            "count": 1636338,
            "maximum": 2372704.81,
            "minimum": 2372231.21,
            "name": "Y",
            "position": 1,
            "stddev": 134.0350341,
            "variance": 17965.39037
          },
          {
            "average": 1.436518164,
            "count": 1636338,
            "maximum": 3.104954215,
            "minimum": 0.8849542146,
            "name": "Z",
            "position": 2,
            "stddev": 0.5887715912,
            "variance": 0.3466519866
          },
          {
            "average": 25244.32157,
            "count": 1636338,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17358.66014,
            "variance": 301323081.9
          },
          {
            "average": 1,
            "count": 1636338,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1636338,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5019170856,
            "count": 1636338,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999964775,
            "variance": 0.2499964776
          },
          {
            "average": 0.0007907901668,
            "count": 1636338,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02810987906,
            "variance": 0.0007901653006
          },
          {
            "average": 6.607777855,
            "count": 1636338,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.337717914,
            "variance": 11.14036087
          },
          {
            "average": 0.4974194266,
            "count": 1636338,
            "maximum": 16.40399933,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.188241251,
            "variance": 67.04729478
          },
          {
            "average": 0.5031319935,
            "count": 1636338,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999903433,
            "variance": 0.2499903434
          },
          {
            "average": 410.1616188,
            "count": 1636338,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7924024941,
            "variance": 0.6279017126
          },
          {
            "average": 220417397.9,
            "count": 1636338,
            "maximum": 220418490.9,
            "minimum": 220416677.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 446.1575019,
            "variance": 199056.5165
          },
          {
            "average": 0.5031319935,
            "count": 1636338,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999903433,
            "variance": 0.2499903434
          },
          {
            "average": 0,
            "count": 1636338,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1636338,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1636338,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1368818667,
            "count": 1636338,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3437226985,
            "variance": 0.1181452935
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94326.35535,
          2372231.21,
          0.8849542146,
          -93830.31535,
          2372704.81,
          3.104954215
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94326.35534583285,
                2372231.2103634067,
                0.884954214595679
              ],
              [
                -94326.35534583285,
                2372704.8103634063,
                0.884954214595679
              ],
              [
                -93830.31534583285,
                2372704.8103634063,
                3.104954214595679
              ],
              [
                -93830.31534583285,
                2372231.2103634067,
                3.104954214595679
              ],
              [
                -94326.35534583285,
                2372231.2103634067,
                0.884954214595679
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:08:10+00:00",
        "end_time": "2018-09-08T04:37:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2333.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2333.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2333.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2333.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5752085,
            71.33216529,
            0.8849542146,
            -156.5611811,
            71.3366905,
            3.104954215
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57470743202228,
                  71.33216528506988,
                  0.884954214595679
                ],
                [
                  -156.5752084587534,
                  71.3365142450568,
                  0.884954214595679
                ],
                [
                  -156.56167951081946,
                  71.3366905015345,
                  3.104954214595679
                ],
                [
                  -156.56118111101364,
                  71.33234150205769,
                  3.104954214595679
                ],
                [
                  -156.57470743202228,
                  71.33216528506988,
                  0.884954214595679
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2333.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2333.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:08:10Z",
            "pc:count": 1636338,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94097.67787,
                "count": 1636338,
                "maximum": -93830.31535,
                "minimum": -94326.35535,
                "name": "X",
                "position": 0,
                "stddev": 139.7545831,
                "variance": 19531.3435
              },
              {
                "average": 2372449.084,
                "count": 1636338,
                "maximum": 2372704.81,
                "minimum": 2372231.21,
                "name": "Y",
                "position": 1,
                "stddev": 134.0350341,
                "variance": 17965.39037
              },
              {
                "average": 1.436518164,
                "count": 1636338,
                "maximum": 3.104954215,
                "minimum": 0.8849542146,
                "name": "Z",
                "position": 2,
                "stddev": 0.5887715912,
                "variance": 0.3466519866
              },
              {
                "average": 25244.32157,
                "count": 1636338,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17358.66014,
                "variance": 301323081.9
              },
              {
                "average": 1,
                "count": 1636338,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1636338,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5019170856,
                "count": 1636338,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999964775,
                "variance": 0.2499964776
              },
              {
                "average": 0.0007907901668,
                "count": 1636338,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02810987906,
                "variance": 0.0007901653006
              },
              {
                "average": 6.607777855,
                "count": 1636338,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.337717914,
                "variance": 11.14036087
              },
              {
                "average": 0.4974194266,
                "count": 1636338,
                "maximum": 16.40399933,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.188241251,
                "variance": 67.04729478
              },
              {
                "average": 0.5031319935,
                "count": 1636338,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999903433,
                "variance": 0.2499903434
              },
              {
                "average": 410.1616188,
                "count": 1636338,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7924024941,
                "variance": 0.6279017126
              },
              {
                "average": 220417397.9,
                "count": 1636338,
                "maximum": 220418490.9,
                "minimum": 220416677.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 446.1575019,
                "variance": 199056.5165
              },
              {
                "average": 0.5031319935,
                "count": 1636338,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999903433,
                "variance": 0.2499903434
              },
              {
                "average": 0,
                "count": 1636338,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1636338,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1636338,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1368818667,
                "count": 1636338,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3437226985,
                "variance": 0.1181452935
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94326.35535,
              2372231.21,
              0.8849542146,
              -93830.31535,
              2372704.81,
              3.104954215
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94326.35534583285,
                    2372231.2103634067,
                    0.884954214595679
                  ],
                  [
                    -94326.35534583285,
                    2372704.8103634063,
                    0.884954214595679
                  ],
                  [
                    -93830.31534583285,
                    2372704.8103634063,
                    3.104954214595679
                  ],
                  [
                    -93830.31534583285,
                    2372231.2103634067,
                    3.104954214595679
                  ],
                  [
                    -94326.35534583285,
                    2372231.2103634067,
                    0.884954214595679
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:08:10+00:00",
            "end_time": "2018-09-08T04:37:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2343.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57440661679593,
              71.33626289838216,
              0.856304039784572
            ],
            [
              -156.57490744404078,
              71.34060996014409,
              0.856304039784572
            ],
            [
              -156.56171700416093,
              71.34078177101215,
              44.73630403978457
            ],
            [
              -156.56121873739278,
              71.336434670764,
              44.73630403978457
            ],
            [
              -156.57440661679593,
              71.33626289838216,
              0.856304039784572
            ]
          ]
        ]
      },
      "bbox": [
        -156.5749074,
        71.3362629,
        0.8563040398,
        -156.5612187,
        71.34078177,
        44.73630404
      ],
      "properties": {
        "datetime": "2018-09-08T04:56:41Z",
        "pc:count": 1507014,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94059.66845,
            "count": 1507014,
            "maximum": -93814.51966,
            "minimum": -94298.05966,
            "name": "X",
            "position": 0,
            "stddev": 130.0474763,
            "variance": 16912.34609
          },
          {
            "average": 2372905.576,
            "count": 1507014,
            "maximum": 2373149.722,
            "minimum": 2372676.342,
            "name": "Y",
            "position": 1,
            "stddev": 126.6454816,
            "variance": 16039.07801
          },
          {
            "average": 1.107108564,
            "count": 1507014,
            "maximum": 44.73630404,
            "minimum": 0.8563040398,
            "name": "Z",
            "position": 2,
            "stddev": 0.07644404775,
            "variance": 0.005843692437
          },
          {
            "average": 18722.32687,
            "count": 1507014,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13512.58232,
            "variance": 182589880.9
          },
          {
            "average": 1.000001327,
            "count": 1507014,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001152009897,
            "variance": 1.327126804e-06
          },
          {
            "average": 1.000002654,
            "count": 1507014,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00162918694,
            "variance": 2.654250085e-06
          },
          {
            "average": 0.4924333815,
            "count": 1507014,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999429089,
            "variance": 0.2499429121
          },
          {
            "average": 0.0006755079913,
            "count": 1507014,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0259817653,
            "variance": 0.0006750521282
          },
          {
            "average": 8.172906157,
            "count": 1507014,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.816277615,
            "variance": 3.298864374
          },
          {
            "average": 3.07666769,
            "count": 1507014,
            "maximum": 16.24200058,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.217675746,
            "variance": 38.65949168
          },
          {
            "average": 0.478396352,
            "count": 1507014,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995332301,
            "variance": 0.249533448
          },
          {
            "average": 409.3917926,
            "count": 1507014,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6460808806,
            "variance": 0.4174205043
          },
          {
            "average": 220416961.6,
            "count": 1507014,
            "maximum": 220417801.3,
            "minimum": 220416235.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 402.4741,
            "variance": 161985.4011
          },
          {
            "average": 0.478396352,
            "count": 1507014,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995332301,
            "variance": 0.249533448
          },
          {
            "average": 0,
            "count": 1507014,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1507014,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1507014,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0290382173,
            "count": 1507014,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1679137217,
            "variance": 0.02819501794
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94298.05966,
          2372676.342,
          0.8563040398,
          -93814.51966,
          2373149.722,
          44.73630404
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94298.05966272212,
                2372676.3415999236,
                0.856304039784572
              ],
              [
                -94298.05966272212,
                2373149.7215999234,
                0.856304039784572
              ],
              [
                -93814.51966272212,
                2373149.7215999234,
                44.73630403978457
              ],
              [
                -93814.51966272212,
                2372676.3415999236,
                44.73630403978457
              ],
              [
                -94298.05966272212,
                2372676.3415999236,
                0.856304039784572
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:56:41+00:00",
        "end_time": "2018-09-08T04:30:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2343.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2343.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2343.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2343.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5749074,
            71.3362629,
            0.8563040398,
            -156.5612187,
            71.34078177,
            44.73630404
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57440661679593,
                  71.33626289838216,
                  0.856304039784572
                ],
                [
                  -156.57490744404078,
                  71.34060996014409,
                  0.856304039784572
                ],
                [
                  -156.56171700416093,
                  71.34078177101215,
                  44.73630403978457
                ],
                [
                  -156.56121873739278,
                  71.336434670764,
                  44.73630403978457
                ],
                [
                  -156.57440661679593,
                  71.33626289838216,
                  0.856304039784572
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2343.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2343.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:56:41Z",
            "pc:count": 1507014,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94059.66845,
                "count": 1507014,
                "maximum": -93814.51966,
                "minimum": -94298.05966,
                "name": "X",
                "position": 0,
                "stddev": 130.0474763,
                "variance": 16912.34609
              },
              {
                "average": 2372905.576,
                "count": 1507014,
                "maximum": 2373149.722,
                "minimum": 2372676.342,
                "name": "Y",
                "position": 1,
                "stddev": 126.6454816,
                "variance": 16039.07801
              },
              {
                "average": 1.107108564,
                "count": 1507014,
                "maximum": 44.73630404,
                "minimum": 0.8563040398,
                "name": "Z",
                "position": 2,
                "stddev": 0.07644404775,
                "variance": 0.005843692437
              },
              {
                "average": 18722.32687,
                "count": 1507014,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13512.58232,
                "variance": 182589880.9
              },
              {
                "average": 1.000001327,
                "count": 1507014,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001152009897,
                "variance": 1.327126804e-06
              },
              {
                "average": 1.000002654,
                "count": 1507014,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00162918694,
                "variance": 2.654250085e-06
              },
              {
                "average": 0.4924333815,
                "count": 1507014,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999429089,
                "variance": 0.2499429121
              },
              {
                "average": 0.0006755079913,
                "count": 1507014,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0259817653,
                "variance": 0.0006750521282
              },
              {
                "average": 8.172906157,
                "count": 1507014,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.816277615,
                "variance": 3.298864374
              },
              {
                "average": 3.07666769,
                "count": 1507014,
                "maximum": 16.24200058,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.217675746,
                "variance": 38.65949168
              },
              {
                "average": 0.478396352,
                "count": 1507014,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995332301,
                "variance": 0.249533448
              },
              {
                "average": 409.3917926,
                "count": 1507014,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6460808806,
                "variance": 0.4174205043
              },
              {
                "average": 220416961.6,
                "count": 1507014,
                "maximum": 220417801.3,
                "minimum": 220416235.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 402.4741,
                "variance": 161985.4011
              },
              {
                "average": 0.478396352,
                "count": 1507014,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995332301,
                "variance": 0.249533448
              },
              {
                "average": 0,
                "count": 1507014,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1507014,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1507014,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0290382173,
                "count": 1507014,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1679137217,
                "variance": 0.02819501794
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94298.05966,
              2372676.342,
              0.8563040398,
              -93814.51966,
              2373149.722,
              44.73630404
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94298.05966272212,
                    2372676.3415999236,
                    0.856304039784572
                  ],
                  [
                    -94298.05966272212,
                    2373149.7215999234,
                    0.856304039784572
                  ],
                  [
                    -93814.51966272212,
                    2373149.7215999234,
                    44.73630403978457
                  ],
                  [
                    -93814.51966272212,
                    2372676.3415999236,
                    44.73630403978457
                  ],
                  [
                    -94298.05966272212,
                    2372676.3415999236,
                    0.856304039784572
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:56:41+00:00",
            "end_time": "2018-09-08T04:30:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2205.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61542326167114,
              71.29967715607563,
              0.944737467144268
            ],
            [
              -156.61593153335454,
              71.30402560431358,
              0.944737467144268
            ],
            [
              -156.60242362789262,
              71.30420460075317,
              3.604737467144268
            ],
            [
              -156.6019179753873,
              71.29985611249133,
              3.604737467144268
            ],
            [
              -156.61542326167114,
              71.29967715607563,
              0.944737467144268
            ]
          ]
        ]
      },
      "bbox": [
        -156.6159315,
        71.29967716,
        0.9447374671,
        -156.601918,
        71.3042046,
        3.604737467
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:09Z",
        "pc:count": 3516388,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95713.15725,
            "count": 3516388,
            "maximum": -95460.45459,
            "minimum": -95956.45459,
            "name": "X",
            "position": 0,
            "stddev": 134.7415622,
            "variance": 18155.2886
          },
          {
            "average": 2368983.072,
            "count": 3516388,
            "maximum": 2369230.172,
            "minimum": 2368756.512,
            "name": "Y",
            "position": 1,
            "stddev": 131.4990151,
            "variance": 17291.99096
          },
          {
            "average": 2.631749429,
            "count": 3516388,
            "maximum": 3.604737467,
            "minimum": 0.9447374671,
            "name": "Z",
            "position": 2,
            "stddev": 0.4213056488,
            "variance": 0.1774984497
          },
          {
            "average": 40641.52812,
            "count": 3516388,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11163.84469,
            "variance": 124631428.3
          },
          {
            "average": 1,
            "count": 3516388,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3516388,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5009825423,
            "count": 3516388,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999991057,
            "variance": 0.2499991057
          },
          {
            "average": 0.000435674334,
            "count": 3516388,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02086826887,
            "variance": 0.0004354846457
          },
          {
            "average": 1.316502616,
            "count": 3516388,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6711555408,
            "variance": 0.4504497599
          },
          {
            "average": 0.6714550281,
            "count": 3516388,
            "maximum": 20.50200081,
            "minimum": -19.42200089,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.58507453,
            "variance": 112.0438029
          },
          {
            "average": 0.5086128152,
            "count": 3516388,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499925885,
            "variance": 0.2499258905
          },
          {
            "average": 422.4303988,
            "count": 3516388,
            "maximum": 456,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.5622461,
            "variance": 242.1835038
          },
          {
            "average": 220476325.1,
            "count": 3516388,
            "maximum": 220722989.7,
            "minimum": 220418960,
            "name": "GpsTime",
            "position": 12,
            "stddev": 117778.3754,
            "variance": 13871745700.0
          },
          {
            "average": 0.5086128152,
            "count": 3516388,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499925885,
            "variance": 0.2499258905
          },
          {
            "average": 0,
            "count": 3516388,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3516388,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3516388,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2232637582,
            "count": 3516388,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4164337904,
            "variance": 0.1734171018
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95956.45459,
          2368756.512,
          0.9447374671,
          -95460.45459,
          2369230.172,
          3.604737467
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95956.45458890594,
                2368756.5119892275,
                0.944737467144268
              ],
              [
                -95956.45458890594,
                2369230.1719892276,
                0.944737467144268
              ],
              [
                -95460.45458890594,
                2369230.1719892276,
                3.604737467144268
              ],
              [
                -95460.45458890594,
                2368756.5119892275,
                3.604737467144268
              ],
              [
                -95956.45458890594,
                2368756.5119892275,
                0.944737467144268
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:09+00:00",
        "end_time": "2018-09-08T05:16:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2205.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2205.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2205.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2205.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6159315,
            71.29967716,
            0.9447374671,
            -156.601918,
            71.3042046,
            3.604737467
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61542326167114,
                  71.29967715607563,
                  0.944737467144268
                ],
                [
                  -156.61593153335454,
                  71.30402560431358,
                  0.944737467144268
                ],
                [
                  -156.60242362789262,
                  71.30420460075317,
                  3.604737467144268
                ],
                [
                  -156.6019179753873,
                  71.29985611249133,
                  3.604737467144268
                ],
                [
                  -156.61542326167114,
                  71.29967715607563,
                  0.944737467144268
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2205.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2205.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:09Z",
            "pc:count": 3516388,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95713.15725,
                "count": 3516388,
                "maximum": -95460.45459,
                "minimum": -95956.45459,
                "name": "X",
                "position": 0,
                "stddev": 134.7415622,
                "variance": 18155.2886
              },
              {
                "average": 2368983.072,
                "count": 3516388,
                "maximum": 2369230.172,
                "minimum": 2368756.512,
                "name": "Y",
                "position": 1,
                "stddev": 131.4990151,
                "variance": 17291.99096
              },
              {
                "average": 2.631749429,
                "count": 3516388,
                "maximum": 3.604737467,
                "minimum": 0.9447374671,
                "name": "Z",
                "position": 2,
                "stddev": 0.4213056488,
                "variance": 0.1774984497
              },
              {
                "average": 40641.52812,
                "count": 3516388,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11163.84469,
                "variance": 124631428.3
              },
              {
                "average": 1,
                "count": 3516388,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3516388,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5009825423,
                "count": 3516388,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999991057,
                "variance": 0.2499991057
              },
              {
                "average": 0.000435674334,
                "count": 3516388,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02086826887,
                "variance": 0.0004354846457
              },
              {
                "average": 1.316502616,
                "count": 3516388,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6711555408,
                "variance": 0.4504497599
              },
              {
                "average": 0.6714550281,
                "count": 3516388,
                "maximum": 20.50200081,
                "minimum": -19.42200089,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.58507453,
                "variance": 112.0438029
              },
              {
                "average": 0.5086128152,
                "count": 3516388,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499925885,
                "variance": 0.2499258905
              },
              {
                "average": 422.4303988,
                "count": 3516388,
                "maximum": 456,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.5622461,
                "variance": 242.1835038
              },
              {
                "average": 220476325.1,
                "count": 3516388,
                "maximum": 220722989.7,
                "minimum": 220418960,
                "name": "GpsTime",
                "position": 12,
                "stddev": 117778.3754,
                "variance": 13871745700.0
              },
              {
                "average": 0.5086128152,
                "count": 3516388,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499925885,
                "variance": 0.2499258905
              },
              {
                "average": 0,
                "count": 3516388,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3516388,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3516388,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2232637582,
                "count": 3516388,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4164337904,
                "variance": 0.1734171018
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95956.45459,
              2368756.512,
              0.9447374671,
              -95460.45459,
              2369230.172,
              3.604737467
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95956.45458890594,
                    2368756.5119892275,
                    0.944737467144268
                  ],
                  [
                    -95956.45458890594,
                    2369230.1719892276,
                    0.944737467144268
                  ],
                  [
                    -95460.45458890594,
                    2369230.1719892276,
                    3.604737467144268
                  ],
                  [
                    -95460.45458890594,
                    2368756.5119892275,
                    3.604737467144268
                  ],
                  [
                    -95956.45458890594,
                    2368756.5119892275,
                    0.944737467144268
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:09+00:00",
            "end_time": "2018-09-08T05:16:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2280.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56313514834176,
              71.31569385745043,
              -2.167282099427724
            ],
            [
              -156.56363220978832,
              71.32003060724436,
              -2.167282099427724
            ],
            [
              -156.55011368282712,
              71.32020604333536,
              3.572717900572277
            ],
            [
              -156.54961923731418,
              71.31586925438296,
              3.572717900572277
            ],
            [
              -156.56313514834176,
              71.31569385745043,
              -2.167282099427724
            ]
          ]
        ]
      },
      "bbox": [
        -156.5636322,
        71.31569386,
        -2.167282099,
        -156.5496192,
        71.32020604,
        3.572717901
      ],
      "properties": {
        "datetime": "2018-09-11T17:33:21Z",
        "pc:count": 1534576,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93702.11892,
            "count": 1534576,
            "maximum": -93475.75176,
            "minimum": -93971.77176,
            "name": "X",
            "position": 0,
            "stddev": 137.7787594,
            "variance": 18982.98653
          },
          {
            "average": 2370633.368,
            "count": 1534576,
            "maximum": 2370895.955,
            "minimum": 2370423.635,
            "name": "Y",
            "position": 1,
            "stddev": 137.3150277,
            "variance": 18855.41684
          },
          {
            "average": 1.218957324,
            "count": 1534576,
            "maximum": 3.572717901,
            "minimum": -2.167282099,
            "name": "Z",
            "position": 2,
            "stddev": 0.2742740896,
            "variance": 0.07522627622
          },
          {
            "average": 16213.04795,
            "count": 1534576,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14750.13328,
            "variance": 217566431.7
          },
          {
            "average": 1.000000652,
            "count": 1534576,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008072458093,
            "variance": 6.516457966e-07
          },
          {
            "average": 1.000001303,
            "count": 1534576,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0011416176,
            "variance": 1.303290744e-06
          },
          {
            "average": 0.50431976,
            "count": 1534576,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999815022,
            "variance": 0.2499815026
          },
          {
            "average": 0.00112865052,
            "count": 1534576,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03357644118,
            "variance": 0.001127377402
          },
          {
            "average": 7.306750529,
            "count": 1534576,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.866068118,
            "variance": 8.214346454
          },
          {
            "average": -2.683347586,
            "count": 1534576,
            "maximum": 20.43000031,
            "minimum": -19.6439991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.037913127,
            "variance": 64.60804744
          },
          {
            "average": 0.4878696135,
            "count": 1534576,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998529949,
            "variance": 0.2498530165
          },
          {
            "average": 431.739341,
            "count": 1534576,
            "maximum": 453,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.56945472,
            "variance": 344.8246486
          },
          {
            "average": 220556093.1,
            "count": 1534576,
            "maximum": 220722401,
            "minimum": 220418915.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 150370.8018,
            "variance": 22611378040.0
          },
          {
            "average": 0.4878696135,
            "count": 1534576,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998529949,
            "variance": 0.2498530165
          },
          {
            "average": 0,
            "count": 1534576,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1534576,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1534576,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07283575398,
            "count": 1534576,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2598667946,
            "variance": 0.06753075093
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93971.77176,
          2370423.635,
          -2.167282099,
          -93475.75176,
          2370895.955,
          3.572717901
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93971.7717623324,
                2370423.635010562,
                -2.167282099427724
              ],
              [
                -93971.7717623324,
                2370895.955010562,
                -2.167282099427724
              ],
              [
                -93475.75176233241,
                2370895.955010562,
                3.572717900572277
              ],
              [
                -93475.75176233241,
                2370423.635010562,
                3.572717900572277
              ],
              [
                -93971.7717623324,
                2370423.635010562,
                -2.167282099427724
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:33:21+00:00",
        "end_time": "2018-09-08T05:15:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2280.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2280.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2280.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2280.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5636322,
            71.31569386,
            -2.167282099,
            -156.5496192,
            71.32020604,
            3.572717901
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56313514834176,
                  71.31569385745043,
                  -2.167282099427724
                ],
                [
                  -156.56363220978832,
                  71.32003060724436,
                  -2.167282099427724
                ],
                [
                  -156.55011368282712,
                  71.32020604333536,
                  3.572717900572277
                ],
                [
                  -156.54961923731418,
                  71.31586925438296,
                  3.572717900572277
                ],
                [
                  -156.56313514834176,
                  71.31569385745043,
                  -2.167282099427724
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2280.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2280.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:33:21Z",
            "pc:count": 1534576,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93702.11892,
                "count": 1534576,
                "maximum": -93475.75176,
                "minimum": -93971.77176,
                "name": "X",
                "position": 0,
                "stddev": 137.7787594,
                "variance": 18982.98653
              },
              {
                "average": 2370633.368,
                "count": 1534576,
                "maximum": 2370895.955,
                "minimum": 2370423.635,
                "name": "Y",
                "position": 1,
                "stddev": 137.3150277,
                "variance": 18855.41684
              },
              {
                "average": 1.218957324,
                "count": 1534576,
                "maximum": 3.572717901,
                "minimum": -2.167282099,
                "name": "Z",
                "position": 2,
                "stddev": 0.2742740896,
                "variance": 0.07522627622
              },
              {
                "average": 16213.04795,
                "count": 1534576,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14750.13328,
                "variance": 217566431.7
              },
              {
                "average": 1.000000652,
                "count": 1534576,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008072458093,
                "variance": 6.516457966e-07
              },
              {
                "average": 1.000001303,
                "count": 1534576,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0011416176,
                "variance": 1.303290744e-06
              },
              {
                "average": 0.50431976,
                "count": 1534576,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999815022,
                "variance": 0.2499815026
              },
              {
                "average": 0.00112865052,
                "count": 1534576,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03357644118,
                "variance": 0.001127377402
              },
              {
                "average": 7.306750529,
                "count": 1534576,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.866068118,
                "variance": 8.214346454
              },
              {
                "average": -2.683347586,
                "count": 1534576,
                "maximum": 20.43000031,
                "minimum": -19.6439991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.037913127,
                "variance": 64.60804744
              },
              {
                "average": 0.4878696135,
                "count": 1534576,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998529949,
                "variance": 0.2498530165
              },
              {
                "average": 431.739341,
                "count": 1534576,
                "maximum": 453,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.56945472,
                "variance": 344.8246486
              },
              {
                "average": 220556093.1,
                "count": 1534576,
                "maximum": 220722401,
                "minimum": 220418915.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 150370.8018,
                "variance": 22611378040.0
              },
              {
                "average": 0.4878696135,
                "count": 1534576,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998529949,
                "variance": 0.2498530165
              },
              {
                "average": 0,
                "count": 1534576,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1534576,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1534576,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07283575398,
                "count": 1534576,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2598667946,
                "variance": 0.06753075093
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93971.77176,
              2370423.635,
              -2.167282099,
              -93475.75176,
              2370895.955,
              3.572717901
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93971.7717623324,
                    2370423.635010562,
                    -2.167282099427724
                  ],
                  [
                    -93971.7717623324,
                    2370895.955010562,
                    -2.167282099427724
                  ],
                  [
                    -93475.75176233241,
                    2370895.955010562,
                    3.572717900572277
                  ],
                  [
                    -93475.75176233241,
                    2370423.635010562,
                    3.572717900572277
                  ],
                  [
                    -93971.7717623324,
                    2370423.635010562,
                    -2.167282099427724
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:33:21+00:00",
            "end_time": "2018-09-08T05:15:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2364.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5991056898978,
              71.34874371149898,
              -8.932629351843197
            ],
            [
              -156.59959518342427,
              71.35295001687903,
              -8.932629351843197
            ],
            [
              -156.58604992654585,
              71.35312805149913,
              32.667370648156805
            ],
            [
              -156.58556297836716,
              71.34892170750214,
              32.667370648156805
            ],
            [
              -156.5991056898978,
              71.34874371149898,
              -8.932629351843197
            ]
          ]
        ]
      },
      "bbox": [
        -156.5995952,
        71.34874371,
        -8.932629352,
        -156.585563,
        71.35312805,
        32.66737065
      ],
      "properties": {
        "datetime": "2018-09-08T04:18:48Z",
        "pc:count": 1712036,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94880.4678,
            "count": 1712036,
            "maximum": -94652.88712,
            "minimum": -95149.16712,
            "name": "X",
            "position": 0,
            "stddev": 133.7093169,
            "variance": 17878.18142
          },
          {
            "average": 2374286.199,
            "count": 1712036,
            "maximum": 2374526.619,
            "minimum": 2374068.599,
            "name": "Y",
            "position": 1,
            "stddev": 122.4052108,
            "variance": 14983.03564
          },
          {
            "average": 1.194412334,
            "count": 1712036,
            "maximum": 32.66737065,
            "minimum": -8.932629352,
            "name": "Z",
            "position": 2,
            "stddev": 0.2690220048,
            "variance": 0.07237283905
          },
          {
            "average": 15561.00911,
            "count": 1712036,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10929.91145,
            "variance": 119462964.3
          },
          {
            "average": 1.000004089,
            "count": 1712036,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002022049638,
            "variance": 4.08868474e-06
          },
          {
            "average": 1.000008177,
            "count": 1712036,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002859604176,
            "variance": 8.177336045e-06
          },
          {
            "average": 0.4975975972,
            "count": 1712036,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999943745,
            "variance": 0.2499943745
          },
          {
            "average": 0.0005414605768,
            "count": 1712036,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0232630117,
            "variance": 0.0005411677133
          },
          {
            "average": 7.420930401,
            "count": 1712036,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.723887459,
            "variance": 7.419562888
          },
          {
            "average": 1.197688741,
            "count": 1712036,
            "maximum": 16.33200073,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.736014566,
            "variance": 59.84592136
          },
          {
            "average": 0.4887023404,
            "count": 1712036,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998724926,
            "variance": 0.2498725088
          },
          {
            "average": 405.1424771,
            "count": 1712036,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7078682384,
            "variance": 0.501077443
          },
          {
            "average": 220414553.1,
            "count": 1712036,
            "maximum": 220415528.1,
            "minimum": 220413288.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 419.9682841,
            "variance": 176373.3597
          },
          {
            "average": 0.4887023404,
            "count": 1712036,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998724926,
            "variance": 0.2498725088
          },
          {
            "average": 0,
            "count": 1712036,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1712036,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1712036,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05564719433,
            "count": 1712036,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2292392087,
            "variance": 0.05255061479
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95149.16712,
          2374068.599,
          -8.932629352,
          -94652.88712,
          2374526.619,
          32.66737065
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95149.16712077976,
                2374068.598943016,
                -8.932629351843197
              ],
              [
                -95149.16712077976,
                2374526.6189430156,
                -8.932629351843197
              ],
              [
                -94652.88712077976,
                2374526.6189430156,
                32.667370648156805
              ],
              [
                -94652.88712077976,
                2374068.598943016,
                32.667370648156805
              ],
              [
                -95149.16712077976,
                2374068.598943016,
                -8.932629351843197
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:18:48+00:00",
        "end_time": "2018-09-08T03:41:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2364.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2364.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2364.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2364.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5995952,
            71.34874371,
            -8.932629352,
            -156.585563,
            71.35312805,
            32.66737065
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5991056898978,
                  71.34874371149898,
                  -8.932629351843197
                ],
                [
                  -156.59959518342427,
                  71.35295001687903,
                  -8.932629351843197
                ],
                [
                  -156.58604992654585,
                  71.35312805149913,
                  32.667370648156805
                ],
                [
                  -156.58556297836716,
                  71.34892170750214,
                  32.667370648156805
                ],
                [
                  -156.5991056898978,
                  71.34874371149898,
                  -8.932629351843197
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2364.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2364.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:18:48Z",
            "pc:count": 1712036,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94880.4678,
                "count": 1712036,
                "maximum": -94652.88712,
                "minimum": -95149.16712,
                "name": "X",
                "position": 0,
                "stddev": 133.7093169,
                "variance": 17878.18142
              },
              {
                "average": 2374286.199,
                "count": 1712036,
                "maximum": 2374526.619,
                "minimum": 2374068.599,
                "name": "Y",
                "position": 1,
                "stddev": 122.4052108,
                "variance": 14983.03564
              },
              {
                "average": 1.194412334,
                "count": 1712036,
                "maximum": 32.66737065,
                "minimum": -8.932629352,
                "name": "Z",
                "position": 2,
                "stddev": 0.2690220048,
                "variance": 0.07237283905
              },
              {
                "average": 15561.00911,
                "count": 1712036,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10929.91145,
                "variance": 119462964.3
              },
              {
                "average": 1.000004089,
                "count": 1712036,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002022049638,
                "variance": 4.08868474e-06
              },
              {
                "average": 1.000008177,
                "count": 1712036,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002859604176,
                "variance": 8.177336045e-06
              },
              {
                "average": 0.4975975972,
                "count": 1712036,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999943745,
                "variance": 0.2499943745
              },
              {
                "average": 0.0005414605768,
                "count": 1712036,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0232630117,
                "variance": 0.0005411677133
              },
              {
                "average": 7.420930401,
                "count": 1712036,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.723887459,
                "variance": 7.419562888
              },
              {
                "average": 1.197688741,
                "count": 1712036,
                "maximum": 16.33200073,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.736014566,
                "variance": 59.84592136
              },
              {
                "average": 0.4887023404,
                "count": 1712036,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998724926,
                "variance": 0.2498725088
              },
              {
                "average": 405.1424771,
                "count": 1712036,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7078682384,
                "variance": 0.501077443
              },
              {
                "average": 220414553.1,
                "count": 1712036,
                "maximum": 220415528.1,
                "minimum": 220413288.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 419.9682841,
                "variance": 176373.3597
              },
              {
                "average": 0.4887023404,
                "count": 1712036,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998724926,
                "variance": 0.2498725088
              },
              {
                "average": 0,
                "count": 1712036,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1712036,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1712036,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05564719433,
                "count": 1712036,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2292392087,
                "variance": 0.05255061479
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95149.16712,
              2374068.599,
              -8.932629352,
              -94652.88712,
              2374526.619,
              32.66737065
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95149.16712077976,
                    2374068.598943016,
                    -8.932629351843197
                  ],
                  [
                    -95149.16712077976,
                    2374526.6189430156,
                    -8.932629351843197
                  ],
                  [
                    -94652.88712077976,
                    2374526.6189430156,
                    32.667370648156805
                  ],
                  [
                    -94652.88712077976,
                    2374068.598943016,
                    32.667370648156805
                  ],
                  [
                    -95149.16712077976,
                    2374068.598943016,
                    -8.932629351843197
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:18:48+00:00",
            "end_time": "2018-09-08T03:41:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2334.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56193073253291,
              71.3321704001731,
              0.937076195711205
            ],
            [
              -156.56241750330452,
              71.3364167270836,
              0.937076195711205
            ],
            [
              -156.55458389419798,
              71.33651838915259,
              1.817076195711205
            ],
            [
              -156.55409860860073,
              71.33227204000252,
              1.817076195711205
            ],
            [
              -156.56193073253291,
              71.3321704001731,
              0.937076195711205
            ]
          ]
        ]
      },
      "bbox": [
        -156.5624175,
        71.3321704,
        0.9370761957,
        -156.5540986,
        71.33651839,
        1.817076196
      ],
      "properties": {
        "datetime": "2018-09-11T17:23:46Z",
        "pc:count": 703522,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93734.86569,
            "count": 703522,
            "maximum": -93571.26262,
            "minimum": -93858.48262,
            "name": "X",
            "position": 0,
            "stddev": 67.6734877,
            "variance": 4579.700938
          },
          {
            "average": 2372402.41,
            "count": 703522,
            "maximum": 2372676.084,
            "minimum": 2372213.664,
            "name": "Y",
            "position": 1,
            "stddev": 124.2523825,
            "variance": 15438.65455
          },
          {
            "average": 1.158967579,
            "count": 703522,
            "maximum": 1.817076196,
            "minimum": 0.9370761957,
            "name": "Z",
            "position": 2,
            "stddev": 0.05373779196,
            "variance": 0.002887750285
          },
          {
            "average": 17824.9608,
            "count": 703522,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13546.54066,
            "variance": 183508763.9
          },
          {
            "average": 1,
            "count": 703522,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 703522,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4976276506,
            "count": 703522,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999947273,
            "variance": 0.2499947273
          },
          {
            "average": 0.0006893885337,
            "count": 703522,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02624717616,
            "variance": 0.0006889142564
          },
          {
            "average": 8.088611301,
            "count": 703522,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.002265164,
            "variance": 4.009065787
          },
          {
            "average": 1.55031122,
            "count": 703522,
            "maximum": 19.19400024,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.121909896,
            "variance": 50.72160056
          },
          {
            "average": 0.483396397,
            "count": 703522,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997245995,
            "variance": 0.2497246753
          },
          {
            "average": 412.1981914,
            "count": 703522,
            "maximum": 450,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 6.506131257,
            "variance": 42.32974393
          },
          {
            "average": 220426564.2,
            "count": 703522,
            "maximum": 220721826.6,
            "minimum": 220416675.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 50563.59639,
            "variance": 2556677280
          },
          {
            "average": 0.483396397,
            "count": 703522,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997245995,
            "variance": 0.2497246753
          },
          {
            "average": 0,
            "count": 703522,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 703522,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 703522,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03302384289,
            "count": 703522,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1786989482,
            "variance": 0.03193331408
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93858.48262,
          2372213.664,
          0.9370761957,
          -93571.26262,
          2372676.084,
          1.817076196
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93858.48262254264,
                2372213.664303612,
                0.937076195711205
              ],
              [
                -93858.48262254264,
                2372676.084303612,
                0.937076195711205
              ],
              [
                -93571.26262254264,
                2372676.084303612,
                1.817076195711205
              ],
              [
                -93571.26262254264,
                2372213.664303612,
                1.817076195711205
              ],
              [
                -93858.48262254264,
                2372213.664303612,
                0.937076195711205
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:23:46+00:00",
        "end_time": "2018-09-08T04:37:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2334.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2334.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2334.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2334.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5624175,
            71.3321704,
            0.9370761957,
            -156.5540986,
            71.33651839,
            1.817076196
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56193073253291,
                  71.3321704001731,
                  0.937076195711205
                ],
                [
                  -156.56241750330452,
                  71.3364167270836,
                  0.937076195711205
                ],
                [
                  -156.55458389419798,
                  71.33651838915259,
                  1.817076195711205
                ],
                [
                  -156.55409860860073,
                  71.33227204000252,
                  1.817076195711205
                ],
                [
                  -156.56193073253291,
                  71.3321704001731,
                  0.937076195711205
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2334.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2334.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:23:46Z",
            "pc:count": 703522,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93734.86569,
                "count": 703522,
                "maximum": -93571.26262,
                "minimum": -93858.48262,
                "name": "X",
                "position": 0,
                "stddev": 67.6734877,
                "variance": 4579.700938
              },
              {
                "average": 2372402.41,
                "count": 703522,
                "maximum": 2372676.084,
                "minimum": 2372213.664,
                "name": "Y",
                "position": 1,
                "stddev": 124.2523825,
                "variance": 15438.65455
              },
              {
                "average": 1.158967579,
                "count": 703522,
                "maximum": 1.817076196,
                "minimum": 0.9370761957,
                "name": "Z",
                "position": 2,
                "stddev": 0.05373779196,
                "variance": 0.002887750285
              },
              {
                "average": 17824.9608,
                "count": 703522,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13546.54066,
                "variance": 183508763.9
              },
              {
                "average": 1,
                "count": 703522,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 703522,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4976276506,
                "count": 703522,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999947273,
                "variance": 0.2499947273
              },
              {
                "average": 0.0006893885337,
                "count": 703522,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02624717616,
                "variance": 0.0006889142564
              },
              {
                "average": 8.088611301,
                "count": 703522,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.002265164,
                "variance": 4.009065787
              },
              {
                "average": 1.55031122,
                "count": 703522,
                "maximum": 19.19400024,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.121909896,
                "variance": 50.72160056
              },
              {
                "average": 0.483396397,
                "count": 703522,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997245995,
                "variance": 0.2497246753
              },
              {
                "average": 412.1981914,
                "count": 703522,
                "maximum": 450,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 6.506131257,
                "variance": 42.32974393
              },
              {
                "average": 220426564.2,
                "count": 703522,
                "maximum": 220721826.6,
                "minimum": 220416675.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 50563.59639,
                "variance": 2556677280
              },
              {
                "average": 0.483396397,
                "count": 703522,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997245995,
                "variance": 0.2497246753
              },
              {
                "average": 0,
                "count": 703522,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 703522,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 703522,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03302384289,
                "count": 703522,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1786989482,
                "variance": 0.03193331408
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93858.48262,
              2372213.664,
              0.9370761957,
              -93571.26262,
              2372676.084,
              1.817076196
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93858.48262254264,
                    2372213.664303612,
                    0.937076195711205
                  ],
                  [
                    -93858.48262254264,
                    2372676.084303612,
                    0.937076195711205
                  ],
                  [
                    -93571.26262254264,
                    2372676.084303612,
                    1.817076195711205
                  ],
                  [
                    -93571.26262254264,
                    2372213.664303612,
                    1.817076195711205
                  ],
                  [
                    -93858.48262254264,
                    2372213.664303612,
                    0.937076195711205
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:23:46+00:00",
            "end_time": "2018-09-08T04:37:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2243.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62761044047994,
              71.30796480483237,
              2.33566419144606
            ],
            [
              -156.6281211174272,
              71.31231218011004,
              2.33566419144606
            ],
            [
              -156.61461103227487,
              71.31249198611134,
              6.43566419144606
            ],
            [
              -156.61410297506674,
              71.30814457061943,
              6.43566419144606
            ],
            [
              -156.62761044047994,
              71.30796480483237,
              2.33566419144606
            ]
          ]
        ]
      },
      "bbox": [
        -156.6281211,
        71.3079648,
        2.335664191,
        -156.614103,
        71.31249199,
        6.435664191
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:13Z",
        "pc:count": 2962364,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96120.01896,
            "count": 2962364,
            "maximum": -95871.77313,
            "minimum": -96367.67313,
            "name": "X",
            "position": 0,
            "stddev": 136.1298764,
            "variance": 18531.34324
          },
          {
            "average": 2369914.218,
            "count": 2962364,
            "maximum": 2370149.006,
            "minimum": 2369675.486,
            "name": "Y",
            "position": 1,
            "stddev": 127.3353807,
            "variance": 16214.29919
          },
          {
            "average": 2.669055237,
            "count": 2962364,
            "maximum": 6.435664191,
            "minimum": 2.335664191,
            "name": "Z",
            "position": 2,
            "stddev": 0.1169276659,
            "variance": 0.01367207905
          },
          {
            "average": 27030.4129,
            "count": 2962364,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9685.160234,
            "variance": 93802328.75
          },
          {
            "average": 1.000000675,
            "count": 2962364,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008216667518,
            "variance": 6.751362509e-07
          },
          {
            "average": 1.00000135,
            "count": 2962364,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001162011872,
            "variance": 1.35027159e-06
          },
          {
            "average": 0.5020186581,
            "count": 2962364,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960094,
            "variance": 0.2499960094
          },
          {
            "average": 0.0004533541455,
            "count": 2962364,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02128729124,
            "variance": 0.0004531487685
          },
          {
            "average": 1.295276678,
            "count": 2962364,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4889227699,
            "variance": 0.239045475
          },
          {
            "average": 1.282924047,
            "count": 2962364,
            "maximum": 16.52400017,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59924811,
            "variance": 112.3440606
          },
          {
            "average": 0.5279850822,
            "count": 2962364,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992163051,
            "variance": 0.2492169193
          },
          {
            "average": 412.2189667,
            "count": 2962364,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9634126146,
            "variance": 0.928163866
          },
          {
            "average": 220418535.8,
            "count": 2962364,
            "maximum": 220419513.2,
            "minimum": 220417315.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 528.8241752,
            "variance": 279655.0083
          },
          {
            "average": 0.5279850822,
            "count": 2962364,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992163051,
            "variance": 0.2492169193
          },
          {
            "average": 0,
            "count": 2962364,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2962364,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2962364,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2701302068,
            "count": 2962364,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.444026964,
            "variance": 0.1971599447
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96367.67313,
          2369675.486,
          2.335664191,
          -95871.77313,
          2370149.006,
          6.435664191
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96367.67313198732,
                2369675.4862034945,
                2.33566419144606
              ],
              [
                -96367.67313198732,
                2370149.006203494,
                2.33566419144606
              ],
              [
                -95871.77313198733,
                2370149.006203494,
                6.43566419144606
              ],
              [
                -95871.77313198733,
                2369675.4862034945,
                6.43566419144606
              ],
              [
                -96367.67313198732,
                2369675.4862034945,
                2.33566419144606
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:13+00:00",
        "end_time": "2018-09-08T04:48:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2243.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2243.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2243.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2243.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6281211,
            71.3079648,
            2.335664191,
            -156.614103,
            71.31249199,
            6.435664191
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62761044047994,
                  71.30796480483237,
                  2.33566419144606
                ],
                [
                  -156.6281211174272,
                  71.31231218011004,
                  2.33566419144606
                ],
                [
                  -156.61461103227487,
                  71.31249198611134,
                  6.43566419144606
                ],
                [
                  -156.61410297506674,
                  71.30814457061943,
                  6.43566419144606
                ],
                [
                  -156.62761044047994,
                  71.30796480483237,
                  2.33566419144606
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2243.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2243.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:13Z",
            "pc:count": 2962364,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96120.01896,
                "count": 2962364,
                "maximum": -95871.77313,
                "minimum": -96367.67313,
                "name": "X",
                "position": 0,
                "stddev": 136.1298764,
                "variance": 18531.34324
              },
              {
                "average": 2369914.218,
                "count": 2962364,
                "maximum": 2370149.006,
                "minimum": 2369675.486,
                "name": "Y",
                "position": 1,
                "stddev": 127.3353807,
                "variance": 16214.29919
              },
              {
                "average": 2.669055237,
                "count": 2962364,
                "maximum": 6.435664191,
                "minimum": 2.335664191,
                "name": "Z",
                "position": 2,
                "stddev": 0.1169276659,
                "variance": 0.01367207905
              },
              {
                "average": 27030.4129,
                "count": 2962364,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9685.160234,
                "variance": 93802328.75
              },
              {
                "average": 1.000000675,
                "count": 2962364,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008216667518,
                "variance": 6.751362509e-07
              },
              {
                "average": 1.00000135,
                "count": 2962364,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001162011872,
                "variance": 1.35027159e-06
              },
              {
                "average": 0.5020186581,
                "count": 2962364,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960094,
                "variance": 0.2499960094
              },
              {
                "average": 0.0004533541455,
                "count": 2962364,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02128729124,
                "variance": 0.0004531487685
              },
              {
                "average": 1.295276678,
                "count": 2962364,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4889227699,
                "variance": 0.239045475
              },
              {
                "average": 1.282924047,
                "count": 2962364,
                "maximum": 16.52400017,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59924811,
                "variance": 112.3440606
              },
              {
                "average": 0.5279850822,
                "count": 2962364,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992163051,
                "variance": 0.2492169193
              },
              {
                "average": 412.2189667,
                "count": 2962364,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9634126146,
                "variance": 0.928163866
              },
              {
                "average": 220418535.8,
                "count": 2962364,
                "maximum": 220419513.2,
                "minimum": 220417315.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 528.8241752,
                "variance": 279655.0083
              },
              {
                "average": 0.5279850822,
                "count": 2962364,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992163051,
                "variance": 0.2492169193
              },
              {
                "average": 0,
                "count": 2962364,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2962364,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2962364,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2701302068,
                "count": 2962364,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.444026964,
                "variance": 0.1971599447
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96367.67313,
              2369675.486,
              2.335664191,
              -95871.77313,
              2370149.006,
              6.435664191
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96367.67313198732,
                    2369675.4862034945,
                    2.33566419144606
                  ],
                  [
                    -96367.67313198732,
                    2370149.006203494,
                    2.33566419144606
                  ],
                  [
                    -95871.77313198733,
                    2370149.006203494,
                    6.43566419144606
                  ],
                  [
                    -95871.77313198733,
                    2369675.4862034945,
                    6.43566419144606
                  ],
                  [
                    -96367.67313198732,
                    2369675.4862034945,
                    2.33566419144606
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:13+00:00",
            "end_time": "2018-09-08T04:48:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2335.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66702823199014,
              71.33714000889424,
              0.841924947968996
            ],
            [
              -156.66712488991283,
              71.33794990253713,
              0.841924947968996
            ],
            [
              -156.66394146827597,
              71.33799294363754,
              1.441924947968996
            ],
            [
              -156.6638449254743,
              71.33718304819837,
              1.441924947968996
            ],
            [
              -156.66702823199014,
              71.33714000889424,
              0.841924947968996
            ]
          ]
        ]
      },
      "bbox": [
        -156.6671249,
        71.33714001,
        0.841924948,
        -156.6638449,
        71.33799294,
        1.441924948
      ],
      "properties": {
        "datetime": "2018-09-08T03:52:23Z",
        "pc:count": 44924,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97607.68052,
            "count": 44924,
            "maximum": -97568.35682,
            "minimum": -97685.07682,
            "name": "X",
            "position": 0,
            "stddev": 26.25435782,
            "variance": 689.2913047
          },
          {
            "average": 2372937.95,
            "count": 44924,
            "maximum": 2372993.788,
            "minimum": 2372905.588,
            "name": "Y",
            "position": 1,
            "stddev": 20.34250225,
            "variance": 413.817398
          },
          {
            "average": 1.133760047,
            "count": 44924,
            "maximum": 1.441924948,
            "minimum": 0.841924948,
            "name": "Z",
            "position": 2,
            "stddev": 0.06640445934,
            "variance": 0.004409552221
          },
          {
            "average": 14801.95372,
            "count": 44924,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9694.092362,
            "variance": 93975426.72
          },
          {
            "average": 1,
            "count": 44924,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 44924,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4891594693,
            "count": 44924,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998880328,
            "variance": 0.2498880454
          },
          {
            "average": 0.0004451963316,
            "count": 44924,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02109521362,
            "variance": 0.0004450080376
          },
          {
            "average": 7.656041314,
            "count": 44924,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.389834588,
            "variance": 5.71130936
          },
          {
            "average": 4.738810524,
            "count": 44924,
            "maximum": 10.42199993,
            "minimum": -15.61200047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.227578056,
            "variance": 27.32757233
          },
          {
            "average": 0.4628483661,
            "count": 44924,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986233954,
            "variance": 0.2486252905
          },
          {
            "average": 403.340041,
            "count": 44924,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5747457397,
            "variance": 0.3303326653
          },
          {
            "average": 220413550.8,
            "count": 44924,
            "maximum": 220413943.9,
            "minimum": 220412848.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 333.3061994,
            "variance": 111093.0226
          },
          {
            "average": 0.4628483661,
            "count": 44924,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986233954,
            "variance": 0.2486252905
          },
          {
            "average": 0,
            "count": 44924,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 44924,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 44924,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05295610364,
            "count": 44924,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2239483671,
            "variance": 0.05015287112
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97685.07682,
          2372905.588,
          0.841924948,
          -97568.35682,
          2372993.788,
          1.441924948
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97685.0768234205,
                2372905.5877192416,
                0.841924947968996
              ],
              [
                -97685.0768234205,
                2372993.787719242,
                0.841924947968996
              ],
              [
                -97568.3568234205,
                2372993.787719242,
                1.441924947968996
              ],
              [
                -97568.3568234205,
                2372905.5877192416,
                1.441924947968996
              ],
              [
                -97685.0768234205,
                2372905.5877192416,
                0.841924947968996
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:52:23+00:00",
        "end_time": "2018-09-08T03:34:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2335.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2335.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2335.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2335.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6671249,
            71.33714001,
            0.841924948,
            -156.6638449,
            71.33799294,
            1.441924948
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66702823199014,
                  71.33714000889424,
                  0.841924947968996
                ],
                [
                  -156.66712488991283,
                  71.33794990253713,
                  0.841924947968996
                ],
                [
                  -156.66394146827597,
                  71.33799294363754,
                  1.441924947968996
                ],
                [
                  -156.6638449254743,
                  71.33718304819837,
                  1.441924947968996
                ],
                [
                  -156.66702823199014,
                  71.33714000889424,
                  0.841924947968996
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2335.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2335.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:52:23Z",
            "pc:count": 44924,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97607.68052,
                "count": 44924,
                "maximum": -97568.35682,
                "minimum": -97685.07682,
                "name": "X",
                "position": 0,
                "stddev": 26.25435782,
                "variance": 689.2913047
              },
              {
                "average": 2372937.95,
                "count": 44924,
                "maximum": 2372993.788,
                "minimum": 2372905.588,
                "name": "Y",
                "position": 1,
                "stddev": 20.34250225,
                "variance": 413.817398
              },
              {
                "average": 1.133760047,
                "count": 44924,
                "maximum": 1.441924948,
                "minimum": 0.841924948,
                "name": "Z",
                "position": 2,
                "stddev": 0.06640445934,
                "variance": 0.004409552221
              },
              {
                "average": 14801.95372,
                "count": 44924,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9694.092362,
                "variance": 93975426.72
              },
              {
                "average": 1,
                "count": 44924,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 44924,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4891594693,
                "count": 44924,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998880328,
                "variance": 0.2498880454
              },
              {
                "average": 0.0004451963316,
                "count": 44924,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02109521362,
                "variance": 0.0004450080376
              },
              {
                "average": 7.656041314,
                "count": 44924,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.389834588,
                "variance": 5.71130936
              },
              {
                "average": 4.738810524,
                "count": 44924,
                "maximum": 10.42199993,
                "minimum": -15.61200047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.227578056,
                "variance": 27.32757233
              },
              {
                "average": 0.4628483661,
                "count": 44924,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986233954,
                "variance": 0.2486252905
              },
              {
                "average": 403.340041,
                "count": 44924,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5747457397,
                "variance": 0.3303326653
              },
              {
                "average": 220413550.8,
                "count": 44924,
                "maximum": 220413943.9,
                "minimum": 220412848.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 333.3061994,
                "variance": 111093.0226
              },
              {
                "average": 0.4628483661,
                "count": 44924,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986233954,
                "variance": 0.2486252905
              },
              {
                "average": 0,
                "count": 44924,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 44924,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 44924,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05295610364,
                "count": 44924,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2239483671,
                "variance": 0.05015287112
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97685.07682,
              2372905.588,
              0.841924948,
              -97568.35682,
              2372993.788,
              1.441924948
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97685.0768234205,
                    2372905.5877192416,
                    0.841924947968996
                  ],
                  [
                    -97685.0768234205,
                    2372993.787719242,
                    0.841924947968996
                  ],
                  [
                    -97568.3568234205,
                    2372993.787719242,
                    1.441924947968996
                  ],
                  [
                    -97568.3568234205,
                    2372905.5877192416,
                    1.441924947968996
                  ],
                  [
                    -97685.0768234205,
                    2372905.5877192416,
                    0.841924947968996
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:52:23+00:00",
            "end_time": "2018-09-08T03:34:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2324.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6826225658663,
              71.33309750053795,
              0.875361206677812
            ],
            [
              -156.68280089101322,
              71.33458317224043,
              0.875361206677812
            ],
            [
              -156.67697008769173,
              71.33466244197412,
              1.475361206677812
            ],
            [
              -156.67679214927608,
              71.33317676420421,
              1.475361206677812
            ],
            [
              -156.6826225658663,
              71.33309750053795,
              0.875361206677812
            ]
          ]
        ]
      },
      "bbox": [
        -156.6828009,
        71.3330975,
        0.8753612067,
        -156.6767921,
        71.33466244,
        1.475361207
      ],
      "properties": {
        "datetime": "2018-09-08T03:52:14Z",
        "pc:count": 154820,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98137.00259,
            "count": 154820,
            "maximum": -98059.88408,
            "minimum": -98273.70408,
            "name": "X",
            "position": 0,
            "stddev": 50.116289,
            "variance": 2511.642423
          },
          {
            "average": 2372547.383,
            "count": 154820,
            "maximum": 2372650.857,
            "minimum": 2372489.057,
            "name": "Y",
            "position": 1,
            "stddev": 36.64380011,
            "variance": 1342.768086
          },
          {
            "average": 1.145179447,
            "count": 154820,
            "maximum": 1.475361207,
            "minimum": 0.8753612067,
            "name": "Z",
            "position": 2,
            "stddev": 0.06726922016,
            "variance": 0.004525147981
          },
          {
            "average": 12951.56864,
            "count": 154820,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9808.423157,
            "variance": 96205164.83
          },
          {
            "average": 1,
            "count": 154820,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 154820,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4914481333,
            "count": 154820,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999284748,
            "variance": 0.2499284799
          },
          {
            "average": 0.001201395169,
            "count": 154820,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03464043257,
            "variance": 0.001199959569
          },
          {
            "average": 7.190363002,
            "count": 154820,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.891945866,
            "variance": 8.363350891
          },
          {
            "average": 3.383785376,
            "count": 154820,
            "maximum": 11.8920002,
            "minimum": -15.67800045,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.538877575,
            "variance": 56.83467509
          },
          {
            "average": 0.4908151402,
            "count": 154820,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999172457,
            "variance": 0.2499172526
          },
          {
            "average": 403.2786397,
            "count": 154820,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6747767856,
            "variance": 0.4553237104
          },
          {
            "average": 220413521.3,
            "count": 154820,
            "maximum": 220413934.2,
            "minimum": 220412837.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 375.6645425,
            "variance": 141123.8485
          },
          {
            "average": 0.4908151402,
            "count": 154820,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999172457,
            "variance": 0.2499172526
          },
          {
            "average": 0,
            "count": 154820,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 154820,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 154820,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09926366103,
            "count": 154820,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.299016662,
            "variance": 0.08941096414
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98273.70408,
          2372489.057,
          0.8753612067,
          -98059.88408,
          2372650.857,
          1.475361207
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98273.7040845436,
                2372489.057192,
                0.875361206677812
              ],
              [
                -98273.7040845436,
                2372650.857192,
                0.875361206677812
              ],
              [
                -98059.88408454359,
                2372650.857192,
                1.475361206677812
              ],
              [
                -98059.88408454359,
                2372489.057192,
                1.475361206677812
              ],
              [
                -98273.7040845436,
                2372489.057192,
                0.875361206677812
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:52:14+00:00",
        "end_time": "2018-09-08T03:33:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2324.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2324.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2324.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2324.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6828009,
            71.3330975,
            0.8753612067,
            -156.6767921,
            71.33466244,
            1.475361207
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6826225658663,
                  71.33309750053795,
                  0.875361206677812
                ],
                [
                  -156.68280089101322,
                  71.33458317224043,
                  0.875361206677812
                ],
                [
                  -156.67697008769173,
                  71.33466244197412,
                  1.475361206677812
                ],
                [
                  -156.67679214927608,
                  71.33317676420421,
                  1.475361206677812
                ],
                [
                  -156.6826225658663,
                  71.33309750053795,
                  0.875361206677812
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2324.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2324.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:52:14Z",
            "pc:count": 154820,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98137.00259,
                "count": 154820,
                "maximum": -98059.88408,
                "minimum": -98273.70408,
                "name": "X",
                "position": 0,
                "stddev": 50.116289,
                "variance": 2511.642423
              },
              {
                "average": 2372547.383,
                "count": 154820,
                "maximum": 2372650.857,
                "minimum": 2372489.057,
                "name": "Y",
                "position": 1,
                "stddev": 36.64380011,
                "variance": 1342.768086
              },
              {
                "average": 1.145179447,
                "count": 154820,
                "maximum": 1.475361207,
                "minimum": 0.8753612067,
                "name": "Z",
                "position": 2,
                "stddev": 0.06726922016,
                "variance": 0.004525147981
              },
              {
                "average": 12951.56864,
                "count": 154820,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9808.423157,
                "variance": 96205164.83
              },
              {
                "average": 1,
                "count": 154820,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 154820,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4914481333,
                "count": 154820,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999284748,
                "variance": 0.2499284799
              },
              {
                "average": 0.001201395169,
                "count": 154820,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03464043257,
                "variance": 0.001199959569
              },
              {
                "average": 7.190363002,
                "count": 154820,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.891945866,
                "variance": 8.363350891
              },
              {
                "average": 3.383785376,
                "count": 154820,
                "maximum": 11.8920002,
                "minimum": -15.67800045,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.538877575,
                "variance": 56.83467509
              },
              {
                "average": 0.4908151402,
                "count": 154820,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999172457,
                "variance": 0.2499172526
              },
              {
                "average": 403.2786397,
                "count": 154820,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6747767856,
                "variance": 0.4553237104
              },
              {
                "average": 220413521.3,
                "count": 154820,
                "maximum": 220413934.2,
                "minimum": 220412837.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 375.6645425,
                "variance": 141123.8485
              },
              {
                "average": 0.4908151402,
                "count": 154820,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999172457,
                "variance": 0.2499172526
              },
              {
                "average": 0,
                "count": 154820,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 154820,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 154820,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09926366103,
                "count": 154820,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.299016662,
                "variance": 0.08941096414
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98273.70408,
              2372489.057,
              0.8753612067,
              -98059.88408,
              2372650.857,
              1.475361207
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98273.7040845436,
                    2372489.057192,
                    0.875361206677812
                  ],
                  [
                    -98273.7040845436,
                    2372650.857192,
                    0.875361206677812
                  ],
                  [
                    -98059.88408454359,
                    2372650.857192,
                    1.475361206677812
                  ],
                  [
                    -98059.88408454359,
                    2372489.057192,
                    1.475361206677812
                  ],
                  [
                    -98273.7040845436,
                    2372489.057192,
                    0.875361206677812
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:52:14+00:00",
            "end_time": "2018-09-08T03:33:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2281.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.55036934892075,
              71.31605049285618,
              0.7991234600905
            ],
            [
              -156.5508121632303,
              71.31993332647399,
              0.7991234600905
            ],
            [
              -156.54015910649957,
              71.32007096034235,
              1.8191234600905
            ],
            [
              -156.5397181379173,
              71.31618809921878,
              1.8191234600905
            ],
            [
              -156.55036934892075,
              71.31605049285618,
              0.7991234600905
            ]
          ]
        ]
      },
      "bbox": [
        -156.5508122,
        71.31605049,
        0.7991234601,
        -156.5397181,
        71.32007096,
        1.81912346
      ],
      "properties": {
        "datetime": "2018-09-11T17:33:13Z",
        "pc:count": 897833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93348.54359,
            "count": 897833,
            "maximum": -93111.60202,
            "minimum": -93502.48202,
            "name": "X",
            "position": 0,
            "stddev": 95.83420337,
            "variance": 9184.194536
          },
          {
            "average": 2370714.468,
            "count": 897833,
            "maximum": 2370867.281,
            "minimum": 2370444.401,
            "name": "Y",
            "position": 1,
            "stddev": 100.8458188,
            "variance": 10169.87917
          },
          {
            "average": 1.150614806,
            "count": 897833,
            "maximum": 1.81912346,
            "minimum": 0.7991234601,
            "name": "Z",
            "position": 2,
            "stddev": 0.07540789323,
            "variance": 0.005686350361
          },
          {
            "average": 19335.16602,
            "count": 897833,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14488.43947,
            "variance": 209914878.3
          },
          {
            "average": 1,
            "count": 897833,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 897833,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4915880793,
            "count": 897833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499929513,
            "variance": 0.249929518
          },
          {
            "average": 0.0006359757327,
            "count": 897833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02521055286,
            "variance": 0.0006355719754
          },
          {
            "average": 7.612590537,
            "count": 897833,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.699042271,
            "variance": 7.284829182
          },
          {
            "average": 3.421148999,
            "count": 897833,
            "maximum": 20.51399994,
            "minimum": -19.54800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.992989608,
            "variance": 35.91592444
          },
          {
            "average": 0.4994726191,
            "count": 897833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.5000000003,
            "variance": 0.2500000003
          },
          {
            "average": 425.7590487,
            "count": 897833,
            "maximum": 453,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.55412573,
            "variance": 274.0390786
          },
          {
            "average": 220506167.3,
            "count": 897833,
            "maximum": 220722393.3,
            "minimum": 220419548.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 136271.1573,
            "variance": 18569828310.0
          },
          {
            "average": 0.4994726191,
            "count": 897833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.5000000003,
            "variance": 0.2500000003
          },
          {
            "average": 0,
            "count": 897833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 897833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 897833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04391017038,
            "count": 897833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2048953735,
            "variance": 0.04198211407
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93502.48202,
          2370444.401,
          0.7991234601,
          -93111.60202,
          2370867.281,
          1.81912346
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93502.48202279714,
                2370444.400855633,
                0.7991234600905
              ],
              [
                -93502.48202279714,
                2370867.280855633,
                0.7991234600905
              ],
              [
                -93111.60202279713,
                2370867.280855633,
                1.8191234600905
              ],
              [
                -93111.60202279713,
                2370444.400855633,
                1.8191234600905
              ],
              [
                -93502.48202279714,
                2370444.400855633,
                0.7991234600905
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:33:13+00:00",
        "end_time": "2018-09-08T05:25:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2281.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2281.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2281.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2281.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5508122,
            71.31605049,
            0.7991234601,
            -156.5397181,
            71.32007096,
            1.81912346
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.55036934892075,
                  71.31605049285618,
                  0.7991234600905
                ],
                [
                  -156.5508121632303,
                  71.31993332647399,
                  0.7991234600905
                ],
                [
                  -156.54015910649957,
                  71.32007096034235,
                  1.8191234600905
                ],
                [
                  -156.5397181379173,
                  71.31618809921878,
                  1.8191234600905
                ],
                [
                  -156.55036934892075,
                  71.31605049285618,
                  0.7991234600905
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2281.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2281.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:33:13Z",
            "pc:count": 897833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93348.54359,
                "count": 897833,
                "maximum": -93111.60202,
                "minimum": -93502.48202,
                "name": "X",
                "position": 0,
                "stddev": 95.83420337,
                "variance": 9184.194536
              },
              {
                "average": 2370714.468,
                "count": 897833,
                "maximum": 2370867.281,
                "minimum": 2370444.401,
                "name": "Y",
                "position": 1,
                "stddev": 100.8458188,
                "variance": 10169.87917
              },
              {
                "average": 1.150614806,
                "count": 897833,
                "maximum": 1.81912346,
                "minimum": 0.7991234601,
                "name": "Z",
                "position": 2,
                "stddev": 0.07540789323,
                "variance": 0.005686350361
              },
              {
                "average": 19335.16602,
                "count": 897833,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14488.43947,
                "variance": 209914878.3
              },
              {
                "average": 1,
                "count": 897833,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 897833,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4915880793,
                "count": 897833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499929513,
                "variance": 0.249929518
              },
              {
                "average": 0.0006359757327,
                "count": 897833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02521055286,
                "variance": 0.0006355719754
              },
              {
                "average": 7.612590537,
                "count": 897833,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.699042271,
                "variance": 7.284829182
              },
              {
                "average": 3.421148999,
                "count": 897833,
                "maximum": 20.51399994,
                "minimum": -19.54800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.992989608,
                "variance": 35.91592444
              },
              {
                "average": 0.4994726191,
                "count": 897833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.5000000003,
                "variance": 0.2500000003
              },
              {
                "average": 425.7590487,
                "count": 897833,
                "maximum": 453,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.55412573,
                "variance": 274.0390786
              },
              {
                "average": 220506167.3,
                "count": 897833,
                "maximum": 220722393.3,
                "minimum": 220419548.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 136271.1573,
                "variance": 18569828310.0
              },
              {
                "average": 0.4994726191,
                "count": 897833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.5000000003,
                "variance": 0.2500000003
              },
              {
                "average": 0,
                "count": 897833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 897833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 897833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04391017038,
                "count": 897833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2048953735,
                "variance": 0.04198211407
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93502.48202,
              2370444.401,
              0.7991234601,
              -93111.60202,
              2370867.281,
              1.81912346
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93502.48202279714,
                    2370444.400855633,
                    0.7991234600905
                  ],
                  [
                    -93502.48202279714,
                    2370867.280855633,
                    0.7991234600905
                  ],
                  [
                    -93111.60202279713,
                    2370867.280855633,
                    1.8191234600905
                  ],
                  [
                    -93111.60202279713,
                    2370444.400855633,
                    1.8191234600905
                  ],
                  [
                    -93502.48202279714,
                    2370444.400855633,
                    0.7991234600905
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:33:13+00:00",
            "end_time": "2018-09-08T05:25:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2376.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5347875803978,
              71.3523549182007,
              0.814189724828241
            ],
            [
              -156.5352811842041,
              71.35670365903893,
              0.814189724828241
            ],
            [
              -156.521734238861,
              71.35687727013479,
              6.874189724828241
            ],
            [
              -156.52124326747776,
              71.35252849035581,
              6.874189724828241
            ],
            [
              -156.5347875803978,
              71.3523549182007,
              0.814189724828241
            ]
          ]
        ]
      },
      "bbox": [
        -156.5352812,
        71.35235492,
        0.8141897248,
        -156.5212433,
        71.35687727,
        6.874189725
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:21Z",
        "pc:count": 1979309,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92534.63749,
            "count": 1979309,
            "maximum": -92284.50703,
            "minimum": -92780.74703,
            "name": "X",
            "position": 0,
            "stddev": 133.3842576,
            "variance": 17791.36017
          },
          {
            "average": 2374624.041,
            "count": 1979309,
            "maximum": 2374843.722,
            "minimum": 2374370.222,
            "name": "Y",
            "position": 1,
            "stddev": 128.9430107,
            "variance": 16626.30002
          },
          {
            "average": 1.233437533,
            "count": 1979309,
            "maximum": 6.874189725,
            "minimum": 0.8141897248,
            "name": "Z",
            "position": 2,
            "stddev": 0.2134217595,
            "variance": 0.04554884744
          },
          {
            "average": 16571.19876,
            "count": 1979309,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10505.99888,
            "variance": 110376012.5
          },
          {
            "average": 1.00000101,
            "count": 1979309,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001005212981,
            "variance": 1.010453138e-06
          },
          {
            "average": 1.000002021,
            "count": 1979309,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001421585113,
            "variance": 2.020904233e-06
          },
          {
            "average": 0.505767922,
            "count": 1979309,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999668563,
            "variance": 0.2499668574
          },
          {
            "average": 0.000491080473,
            "count": 1979309,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02215489925,
            "variance": 0.000490839561
          },
          {
            "average": 5.877693175,
            "count": 1979309,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.68759281,
            "variance": 13.59834073
          },
          {
            "average": -1.311968864,
            "count": 1979309,
            "maximum": 16.44000053,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.514147127,
            "variance": 72.4907013
          },
          {
            "average": 0.484970765,
            "count": 1979309,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997741973,
            "variance": 0.2497742483
          },
          {
            "average": 408.2882274,
            "count": 1979309,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7902838241,
            "variance": 0.6245485227
          },
          {
            "average": 220416324.6,
            "count": 1979309,
            "maximum": 220417421.8,
            "minimum": 220415485.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 450.9951475,
            "variance": 203396.6231
          },
          {
            "average": 0.484970765,
            "count": 1979309,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997741973,
            "variance": 0.2497742483
          },
          {
            "average": 0,
            "count": 1979309,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1979309,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1979309,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1215277655,
            "count": 1979309,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3267396848,
            "variance": 0.1067588216
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92780.74703,
          2374370.222,
          0.8141897248,
          -92284.50703,
          2374843.722,
          6.874189725
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92780.7470289174,
                2374370.221846381,
                0.814189724828241
              ],
              [
                -92780.7470289174,
                2374843.721846381,
                0.814189724828241
              ],
              [
                -92284.5070289174,
                2374843.721846381,
                6.874189724828241
              ],
              [
                -92284.5070289174,
                2374370.221846381,
                6.874189724828241
              ],
              [
                -92780.7470289174,
                2374370.221846381,
                0.814189724828241
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:21+00:00",
        "end_time": "2018-09-08T04:18:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2376.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2376.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2376.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2376.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5352812,
            71.35235492,
            0.8141897248,
            -156.5212433,
            71.35687727,
            6.874189725
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5347875803978,
                  71.3523549182007,
                  0.814189724828241
                ],
                [
                  -156.5352811842041,
                  71.35670365903893,
                  0.814189724828241
                ],
                [
                  -156.521734238861,
                  71.35687727013479,
                  6.874189724828241
                ],
                [
                  -156.52124326747776,
                  71.35252849035581,
                  6.874189724828241
                ],
                [
                  -156.5347875803978,
                  71.3523549182007,
                  0.814189724828241
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2376.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2376.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:21Z",
            "pc:count": 1979309,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92534.63749,
                "count": 1979309,
                "maximum": -92284.50703,
                "minimum": -92780.74703,
                "name": "X",
                "position": 0,
                "stddev": 133.3842576,
                "variance": 17791.36017
              },
              {
                "average": 2374624.041,
                "count": 1979309,
                "maximum": 2374843.722,
                "minimum": 2374370.222,
                "name": "Y",
                "position": 1,
                "stddev": 128.9430107,
                "variance": 16626.30002
              },
              {
                "average": 1.233437533,
                "count": 1979309,
                "maximum": 6.874189725,
                "minimum": 0.8141897248,
                "name": "Z",
                "position": 2,
                "stddev": 0.2134217595,
                "variance": 0.04554884744
              },
              {
                "average": 16571.19876,
                "count": 1979309,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10505.99888,
                "variance": 110376012.5
              },
              {
                "average": 1.00000101,
                "count": 1979309,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001005212981,
                "variance": 1.010453138e-06
              },
              {
                "average": 1.000002021,
                "count": 1979309,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001421585113,
                "variance": 2.020904233e-06
              },
              {
                "average": 0.505767922,
                "count": 1979309,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999668563,
                "variance": 0.2499668574
              },
              {
                "average": 0.000491080473,
                "count": 1979309,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02215489925,
                "variance": 0.000490839561
              },
              {
                "average": 5.877693175,
                "count": 1979309,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.68759281,
                "variance": 13.59834073
              },
              {
                "average": -1.311968864,
                "count": 1979309,
                "maximum": 16.44000053,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.514147127,
                "variance": 72.4907013
              },
              {
                "average": 0.484970765,
                "count": 1979309,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997741973,
                "variance": 0.2497742483
              },
              {
                "average": 408.2882274,
                "count": 1979309,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7902838241,
                "variance": 0.6245485227
              },
              {
                "average": 220416324.6,
                "count": 1979309,
                "maximum": 220417421.8,
                "minimum": 220415485.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 450.9951475,
                "variance": 203396.6231
              },
              {
                "average": 0.484970765,
                "count": 1979309,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997741973,
                "variance": 0.2497742483
              },
              {
                "average": 0,
                "count": 1979309,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1979309,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1979309,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1215277655,
                "count": 1979309,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3267396848,
                "variance": 0.1067588216
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92780.74703,
              2374370.222,
              0.8141897248,
              -92284.50703,
              2374843.722,
              6.874189725
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92780.7470289174,
                    2374370.221846381,
                    0.814189724828241
                  ],
                  [
                    -92780.7470289174,
                    2374843.721846381,
                    0.814189724828241
                  ],
                  [
                    -92284.5070289174,
                    2374843.721846381,
                    6.874189724828241
                  ],
                  [
                    -92284.5070289174,
                    2374370.221846381,
                    6.874189724828241
                  ],
                  [
                    -92780.7470289174,
                    2374370.221846381,
                    0.814189724828241
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:21+00:00",
            "end_time": "2018-09-08T04:18:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2325.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67703114063423,
              71.33291033475446,
              0.853727673435765
            ],
            [
              -156.67752805810463,
              71.3370585083666,
              0.853727673435765
            ],
            [
              -156.6640039650618,
              71.3372417244282,
              21.673727673435764
            ],
            [
              -156.6635095521032,
              71.3330935116603,
              21.673727673435764
            ],
            [
              -156.67703114063423,
              71.33291033475446,
              0.853727673435765
            ]
          ]
        ]
      },
      "bbox": [
        -156.6775281,
        71.33291033,
        0.8537276734,
        -156.6635096,
        71.33724172,
        21.67372767
      ],
      "properties": {
        "datetime": "2018-09-08T04:00:57Z",
        "pc:count": 1343095,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97788.73692,
            "count": 1343095,
            "maximum": -97573.92277,
            "minimum": -98069.80277,
            "name": "X",
            "position": 0,
            "stddev": 129.9638529,
            "variance": 16890.60305
          },
          {
            "average": 2372650.344,
            "count": 1343095,
            "maximum": 2372912.201,
            "minimum": 2372460.441,
            "name": "Y",
            "position": 1,
            "stddev": 111.9425107,
            "variance": 12531.12571
          },
          {
            "average": 1.137729609,
            "count": 1343095,
            "maximum": 21.67372767,
            "minimum": 0.8537276734,
            "name": "Z",
            "position": 2,
            "stddev": 0.08182245072,
            "variance": 0.006694913442
          },
          {
            "average": 14724.82598,
            "count": 1343095,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10322.60431,
            "variance": 106556159.7
          },
          {
            "average": 1.000002234,
            "count": 1343095,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001494537917,
            "variance": 2.233643586e-06
          },
          {
            "average": 1.000004467,
            "count": 1343095,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002113593432,
            "variance": 4.467277194e-06
          },
          {
            "average": 0.4905483231,
            "count": 1343095,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999108439,
            "variance": 0.2499108519
          },
          {
            "average": 0.0005196951817,
            "count": 1343095,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02279090795,
            "variance": 0.0005194254853
          },
          {
            "average": 7.682303932,
            "count": 1343095,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.427855578,
            "variance": 5.894482708
          },
          {
            "average": 4.283025875,
            "count": 1343095,
            "maximum": 16.21800041,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.025347233,
            "variance": 36.30480928
          },
          {
            "average": 0.4830685841,
            "count": 1343095,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499713431,
            "variance": 0.2497135131
          },
          {
            "average": 403.6132835,
            "count": 1343095,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.62053073,
            "variance": 0.3850583869
          },
          {
            "average": 220413704.8,
            "count": 1343095,
            "maximum": 220414457.4,
            "minimum": 220412840.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 354.3953753,
            "variance": 125596.082
          },
          {
            "average": 0.4830685841,
            "count": 1343095,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499713431,
            "variance": 0.2497135131
          },
          {
            "average": 0,
            "count": 1343095,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1343095,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1343095,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04067471028,
            "count": 1343095,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1975355848,
            "variance": 0.03902030727
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98069.80277,
          2372460.441,
          0.8537276734,
          -97573.92277,
          2372912.201,
          21.67372767
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98069.80277036746,
                2372460.4411348384,
                0.853727673435765
              ],
              [
                -98069.80277036746,
                2372912.201134838,
                0.853727673435765
              ],
              [
                -97573.92277036746,
                2372912.201134838,
                21.673727673435764
              ],
              [
                -97573.92277036746,
                2372460.4411348384,
                21.673727673435764
              ],
              [
                -98069.80277036746,
                2372460.4411348384,
                0.853727673435765
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:00:57+00:00",
        "end_time": "2018-09-08T03:34:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2325.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2325.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2325.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2325.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6775281,
            71.33291033,
            0.8537276734,
            -156.6635096,
            71.33724172,
            21.67372767
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67703114063423,
                  71.33291033475446,
                  0.853727673435765
                ],
                [
                  -156.67752805810463,
                  71.3370585083666,
                  0.853727673435765
                ],
                [
                  -156.6640039650618,
                  71.3372417244282,
                  21.673727673435764
                ],
                [
                  -156.6635095521032,
                  71.3330935116603,
                  21.673727673435764
                ],
                [
                  -156.67703114063423,
                  71.33291033475446,
                  0.853727673435765
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2325.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2325.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:00:57Z",
            "pc:count": 1343095,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97788.73692,
                "count": 1343095,
                "maximum": -97573.92277,
                "minimum": -98069.80277,
                "name": "X",
                "position": 0,
                "stddev": 129.9638529,
                "variance": 16890.60305
              },
              {
                "average": 2372650.344,
                "count": 1343095,
                "maximum": 2372912.201,
                "minimum": 2372460.441,
                "name": "Y",
                "position": 1,
                "stddev": 111.9425107,
                "variance": 12531.12571
              },
              {
                "average": 1.137729609,
                "count": 1343095,
                "maximum": 21.67372767,
                "minimum": 0.8537276734,
                "name": "Z",
                "position": 2,
                "stddev": 0.08182245072,
                "variance": 0.006694913442
              },
              {
                "average": 14724.82598,
                "count": 1343095,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10322.60431,
                "variance": 106556159.7
              },
              {
                "average": 1.000002234,
                "count": 1343095,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001494537917,
                "variance": 2.233643586e-06
              },
              {
                "average": 1.000004467,
                "count": 1343095,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002113593432,
                "variance": 4.467277194e-06
              },
              {
                "average": 0.4905483231,
                "count": 1343095,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999108439,
                "variance": 0.2499108519
              },
              {
                "average": 0.0005196951817,
                "count": 1343095,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02279090795,
                "variance": 0.0005194254853
              },
              {
                "average": 7.682303932,
                "count": 1343095,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.427855578,
                "variance": 5.894482708
              },
              {
                "average": 4.283025875,
                "count": 1343095,
                "maximum": 16.21800041,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.025347233,
                "variance": 36.30480928
              },
              {
                "average": 0.4830685841,
                "count": 1343095,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499713431,
                "variance": 0.2497135131
              },
              {
                "average": 403.6132835,
                "count": 1343095,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.62053073,
                "variance": 0.3850583869
              },
              {
                "average": 220413704.8,
                "count": 1343095,
                "maximum": 220414457.4,
                "minimum": 220412840.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 354.3953753,
                "variance": 125596.082
              },
              {
                "average": 0.4830685841,
                "count": 1343095,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499713431,
                "variance": 0.2497135131
              },
              {
                "average": 0,
                "count": 1343095,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1343095,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1343095,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04067471028,
                "count": 1343095,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1975355848,
                "variance": 0.03902030727
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98069.80277,
              2372460.441,
              0.8537276734,
              -97573.92277,
              2372912.201,
              21.67372767
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98069.80277036746,
                    2372460.4411348384,
                    0.853727673435765
                  ],
                  [
                    -98069.80277036746,
                    2372912.201134838,
                    0.853727673435765
                  ],
                  [
                    -97573.92277036746,
                    2372912.201134838,
                    21.673727673435764
                  ],
                  [
                    -97573.92277036746,
                    2372460.4411348384,
                    21.673727673435764
                  ],
                  [
                    -98069.80277036746,
                    2372460.4411348384,
                    0.853727673435765
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:00:57+00:00",
            "end_time": "2018-09-08T03:34:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2282.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7283275680967,
              71.32098146739911,
              0.874369588596103
            ],
            [
              -156.72875546912465,
              71.32448795040506,
              0.874369588596103
            ],
            [
              -156.7160276689148,
              71.3246637993138,
              1.494369588596103
            ],
            [
              -156.71560175929355,
              71.32115728456206,
              1.494369588596103
            ],
            [
              -156.7283275680967,
              71.32098146739911,
              0.874369588596103
            ]
          ]
        ]
      },
      "bbox": [
        -156.7287555,
        71.32098147,
        0.8743695886,
        -156.7156018,
        71.3246638,
        1.494369589
      ],
      "properties": {
        "datetime": "2018-09-08T03:51:44Z",
        "pc:count": 755780,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99703.11661,
            "count": 755780,
            "maximum": -99534.29372,
            "minimum": -100001.2537,
            "name": "X",
            "position": 0,
            "stddev": 109.1329985,
            "variance": 11910.01137
          },
          {
            "average": 2371376.738,
            "count": 755780,
            "maximum": 2371621.794,
            "minimum": 2371239.874,
            "name": "Y",
            "position": 1,
            "stddev": 87.92670903,
            "variance": 7731.10616
          },
          {
            "average": 1.159940866,
            "count": 755780,
            "maximum": 1.494369589,
            "minimum": 0.8743695886,
            "name": "Z",
            "position": 2,
            "stddev": 0.06353864442,
            "variance": 0.004037159335
          },
          {
            "average": 14878.80653,
            "count": 755780,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10949.48253,
            "variance": 119891167.6
          },
          {
            "average": 1,
            "count": 755780,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 755780,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4947140702,
            "count": 755780,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999723889,
            "variance": 0.2499723897
          },
          {
            "average": 0.0002513959089,
            "count": 755780,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01585348673,
            "variance": 0.0002513330415
          },
          {
            "average": 7.388875069,
            "count": 755780,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.693617663,
            "variance": 7.255576116
          },
          {
            "average": 2.324457954,
            "count": 755780,
            "maximum": 15.91800022,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.642687698,
            "variance": 58.41067525
          },
          {
            "average": 0.4829619731,
            "count": 755780,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997099519,
            "variance": 0.249710036
          },
          {
            "average": 403.1861825,
            "count": 755780,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6477202822,
            "variance": 0.419541564
          },
          {
            "average": 220413471.7,
            "count": 755780,
            "maximum": 220413904,
            "minimum": 220412802.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 349.2242926,
            "variance": 121957.6066
          },
          {
            "average": 0.4829619731,
            "count": 755780,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997099519,
            "variance": 0.249710036
          },
          {
            "average": 0,
            "count": 755780,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 755780,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 755780,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04455397073,
            "count": 755780,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2063224921,
            "variance": 0.04256897075
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100001.2537,
          2371239.874,
          0.8743695886,
          -99534.29372,
          2371621.794,
          1.494369589
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100001.25371674985,
                2371239.8739102837,
                0.874369588596103
              ],
              [
                -100001.25371674985,
                2371621.7939102836,
                0.874369588596103
              ],
              [
                -99534.29371674986,
                2371621.7939102836,
                1.494369588596103
              ],
              [
                -99534.29371674986,
                2371239.8739102837,
                1.494369588596103
              ],
              [
                -100001.25371674985,
                2371239.8739102837,
                0.874369588596103
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:51:44+00:00",
        "end_time": "2018-09-08T03:33:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2282.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2282.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2282.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2282.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7287555,
            71.32098147,
            0.8743695886,
            -156.7156018,
            71.3246638,
            1.494369589
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7283275680967,
                  71.32098146739911,
                  0.874369588596103
                ],
                [
                  -156.72875546912465,
                  71.32448795040506,
                  0.874369588596103
                ],
                [
                  -156.7160276689148,
                  71.3246637993138,
                  1.494369588596103
                ],
                [
                  -156.71560175929355,
                  71.32115728456206,
                  1.494369588596103
                ],
                [
                  -156.7283275680967,
                  71.32098146739911,
                  0.874369588596103
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2282.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2282.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:51:44Z",
            "pc:count": 755780,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99703.11661,
                "count": 755780,
                "maximum": -99534.29372,
                "minimum": -100001.2537,
                "name": "X",
                "position": 0,
                "stddev": 109.1329985,
                "variance": 11910.01137
              },
              {
                "average": 2371376.738,
                "count": 755780,
                "maximum": 2371621.794,
                "minimum": 2371239.874,
                "name": "Y",
                "position": 1,
                "stddev": 87.92670903,
                "variance": 7731.10616
              },
              {
                "average": 1.159940866,
                "count": 755780,
                "maximum": 1.494369589,
                "minimum": 0.8743695886,
                "name": "Z",
                "position": 2,
                "stddev": 0.06353864442,
                "variance": 0.004037159335
              },
              {
                "average": 14878.80653,
                "count": 755780,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10949.48253,
                "variance": 119891167.6
              },
              {
                "average": 1,
                "count": 755780,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 755780,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4947140702,
                "count": 755780,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999723889,
                "variance": 0.2499723897
              },
              {
                "average": 0.0002513959089,
                "count": 755780,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01585348673,
                "variance": 0.0002513330415
              },
              {
                "average": 7.388875069,
                "count": 755780,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.693617663,
                "variance": 7.255576116
              },
              {
                "average": 2.324457954,
                "count": 755780,
                "maximum": 15.91800022,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.642687698,
                "variance": 58.41067525
              },
              {
                "average": 0.4829619731,
                "count": 755780,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997099519,
                "variance": 0.249710036
              },
              {
                "average": 403.1861825,
                "count": 755780,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6477202822,
                "variance": 0.419541564
              },
              {
                "average": 220413471.7,
                "count": 755780,
                "maximum": 220413904,
                "minimum": 220412802.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 349.2242926,
                "variance": 121957.6066
              },
              {
                "average": 0.4829619731,
                "count": 755780,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997099519,
                "variance": 0.249710036
              },
              {
                "average": 0,
                "count": 755780,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 755780,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 755780,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04455397073,
                "count": 755780,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2063224921,
                "variance": 0.04256897075
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100001.2537,
              2371239.874,
              0.8743695886,
              -99534.29372,
              2371621.794,
              1.494369589
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100001.25371674985,
                    2371239.8739102837,
                    0.874369588596103
                  ],
                  [
                    -100001.25371674985,
                    2371621.7939102836,
                    0.874369588596103
                  ],
                  [
                    -99534.29371674986,
                    2371621.7939102836,
                    1.494369588596103
                  ],
                  [
                    -99534.29371674986,
                    2371239.8739102837,
                    1.494369588596103
                  ],
                  [
                    -100001.25371674985,
                    2371239.8739102837,
                    0.874369588596103
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:51:44+00:00",
            "end_time": "2018-09-08T03:33:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2375.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5475917417513,
              71.35245482883848,
              0.808013417826324
            ],
            [
              -156.54808779801579,
              71.35680317316663,
              0.808013417826324
            ],
            [
              -156.53454362176345,
              71.35697762820715,
              20.028013417826322
            ],
            [
              -156.53405019711525,
              71.3526292447523,
              20.028013417826322
            ],
            [
              -156.5475917417513,
              71.35245482883848,
              0.808013417826324
            ]
          ]
        ]
      },
      "bbox": [
        -156.5480878,
        71.35245483,
        0.8080134178,
        -156.5340502,
        71.35697763,
        20.02801342
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:29Z",
        "pc:count": 2054875,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93012.05737,
            "count": 2054875,
            "maximum": -92752.63108,
            "minimum": -93248.77108,
            "name": "X",
            "position": 0,
            "stddev": 133.7379319,
            "variance": 17885.83442
          },
          {
            "average": 2374658.408,
            "count": 2054875,
            "maximum": 2374872.478,
            "minimum": 2374399.018,
            "name": "Y",
            "position": 1,
            "stddev": 128.3840126,
            "variance": 16482.4547
          },
          {
            "average": 1.674812289,
            "count": 2054875,
            "maximum": 20.02801342,
            "minimum": 0.8080134178,
            "name": "Z",
            "position": 2,
            "stddev": 0.933600714,
            "variance": 0.8716102931
          },
          {
            "average": 16919.88774,
            "count": 2054875,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10086.89508,
            "variance": 101745452.3
          },
          {
            "average": 1.000004866,
            "count": 2054875,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002206004249,
            "variance": 4.866454749e-06
          },
          {
            "average": 1.000009733,
            "count": 2054875,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003119753537,
            "variance": 9.732862132e-06
          },
          {
            "average": 0.4951809721,
            "count": 2054875,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999768981,
            "variance": 0.2499768986
          },
          {
            "average": 0.0005070868058,
            "count": 2054875,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02251288332,
            "variance": 0.0005068299154
          },
          {
            "average": 5.263669566,
            "count": 2054875,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.717325835,
            "variance": 13.81851136
          },
          {
            "average": 1.436842436,
            "count": 2054875,
            "maximum": 16.32600021,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.497703704,
            "variance": 72.21096824
          },
          {
            "average": 0.4769652655,
            "count": 2054875,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994692407,
            "variance": 0.2494695224
          },
          {
            "average": 407.3493181,
            "count": 2054875,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7962144653,
            "variance": 0.6339574747
          },
          {
            "average": 220415816.6,
            "count": 2054875,
            "maximum": 220416649.7,
            "minimum": 220415146.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 476.1646226,
            "variance": 226732.7478
          },
          {
            "average": 0.4769652655,
            "count": 2054875,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994692407,
            "variance": 0.2494695224
          },
          {
            "average": 0,
            "count": 2054875,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2054875,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2054875,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1037780887,
            "count": 2054875,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3049725271,
            "variance": 0.09300824226
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93248.77108,
          2374399.018,
          0.8080134178,
          -92752.63108,
          2374872.478,
          20.02801342
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93248.77108308121,
                2374399.018001268,
                0.808013417826324
              ],
              [
                -93248.77108308121,
                2374872.478001268,
                0.808013417826324
              ],
              [
                -92752.6310830812,
                2374872.478001268,
                20.028013417826322
              ],
              [
                -92752.6310830812,
                2374399.018001268,
                20.028013417826322
              ],
              [
                -93248.77108308121,
                2374399.018001268,
                0.808013417826324
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:29+00:00",
        "end_time": "2018-09-08T04:12:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2375.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2375.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2375.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2375.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5480878,
            71.35245483,
            0.8080134178,
            -156.5340502,
            71.35697763,
            20.02801342
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5475917417513,
                  71.35245482883848,
                  0.808013417826324
                ],
                [
                  -156.54808779801579,
                  71.35680317316663,
                  0.808013417826324
                ],
                [
                  -156.53454362176345,
                  71.35697762820715,
                  20.028013417826322
                ],
                [
                  -156.53405019711525,
                  71.3526292447523,
                  20.028013417826322
                ],
                [
                  -156.5475917417513,
                  71.35245482883848,
                  0.808013417826324
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2375.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2375.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:29Z",
            "pc:count": 2054875,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93012.05737,
                "count": 2054875,
                "maximum": -92752.63108,
                "minimum": -93248.77108,
                "name": "X",
                "position": 0,
                "stddev": 133.7379319,
                "variance": 17885.83442
              },
              {
                "average": 2374658.408,
                "count": 2054875,
                "maximum": 2374872.478,
                "minimum": 2374399.018,
                "name": "Y",
                "position": 1,
                "stddev": 128.3840126,
                "variance": 16482.4547
              },
              {
                "average": 1.674812289,
                "count": 2054875,
                "maximum": 20.02801342,
                "minimum": 0.8080134178,
                "name": "Z",
                "position": 2,
                "stddev": 0.933600714,
                "variance": 0.8716102931
              },
              {
                "average": 16919.88774,
                "count": 2054875,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10086.89508,
                "variance": 101745452.3
              },
              {
                "average": 1.000004866,
                "count": 2054875,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002206004249,
                "variance": 4.866454749e-06
              },
              {
                "average": 1.000009733,
                "count": 2054875,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003119753537,
                "variance": 9.732862132e-06
              },
              {
                "average": 0.4951809721,
                "count": 2054875,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999768981,
                "variance": 0.2499768986
              },
              {
                "average": 0.0005070868058,
                "count": 2054875,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02251288332,
                "variance": 0.0005068299154
              },
              {
                "average": 5.263669566,
                "count": 2054875,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.717325835,
                "variance": 13.81851136
              },
              {
                "average": 1.436842436,
                "count": 2054875,
                "maximum": 16.32600021,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.497703704,
                "variance": 72.21096824
              },
              {
                "average": 0.4769652655,
                "count": 2054875,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994692407,
                "variance": 0.2494695224
              },
              {
                "average": 407.3493181,
                "count": 2054875,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7962144653,
                "variance": 0.6339574747
              },
              {
                "average": 220415816.6,
                "count": 2054875,
                "maximum": 220416649.7,
                "minimum": 220415146.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 476.1646226,
                "variance": 226732.7478
              },
              {
                "average": 0.4769652655,
                "count": 2054875,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994692407,
                "variance": 0.2494695224
              },
              {
                "average": 0,
                "count": 2054875,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2054875,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2054875,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1037780887,
                "count": 2054875,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3049725271,
                "variance": 0.09300824226
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93248.77108,
              2374399.018,
              0.8080134178,
              -92752.63108,
              2374872.478,
              20.02801342
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93248.77108308121,
                    2374399.018001268,
                    0.808013417826324
                  ],
                  [
                    -93248.77108308121,
                    2374872.478001268,
                    0.808013417826324
                  ],
                  [
                    -92752.6310830812,
                    2374872.478001268,
                    20.028013417826322
                  ],
                  [
                    -92752.6310830812,
                    2374399.018001268,
                    20.028013417826322
                  ],
                  [
                    -93248.77108308121,
                    2374399.018001268,
                    0.808013417826324
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:29+00:00",
            "end_time": "2018-09-08T04:12:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2291.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6139599552897,
              71.32016121834458,
              3.07631095806741
            ],
            [
              -156.61446836499795,
              71.32450990668116,
              3.07631095806741
            ],
            [
              -156.60094644235946,
              71.32468884880095,
              354.0163109580674
            ],
            [
              -156.60044065673299,
              71.32034012040303,
              354.0163109580674
            ],
            [
              -156.6139599552897,
              71.32016121834458,
              3.07631095806741
            ]
          ]
        ]
      },
      "bbox": [
        -156.6144684,
        71.32016122,
        3.076310958,
        -156.6004407,
        71.32468885,
        354.016311
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:37Z",
        "pc:count": 3260737,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95569.38926,
            "count": 3260737,
            "maximum": -95319.00833,
            "minimum": -95815.06833,
            "name": "X",
            "position": 0,
            "stddev": 135.1180455,
            "variance": 18256.88623
          },
          {
            "average": 2371221.648,
            "count": 3260737,
            "maximum": 2371455.691,
            "minimum": 2370982.071,
            "name": "Y",
            "position": 1,
            "stddev": 129.15747,
            "variance": 16681.65206
          },
          {
            "average": 6.669246767,
            "count": 3260737,
            "maximum": 354.016311,
            "minimum": 3.076310958,
            "name": "Z",
            "position": 2,
            "stddev": 1.075255654,
            "variance": 1.156174721
          },
          {
            "average": 46938.22699,
            "count": 3260737,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8023.017686,
            "variance": 64368812.79
          },
          {
            "average": 1.001081351,
            "count": 3260737,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03494644595,
            "variance": 0.001221254084
          },
          {
            "average": 1.002162395,
            "count": 3260737,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05080291942,
            "variance": 0.002580936622
          },
          {
            "average": 0.5025458968,
            "count": 3260737,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499993595,
            "variance": 0.2499935951
          },
          {
            "average": 0.0003950027248,
            "count": 3260737,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01987075285,
            "variance": 0.0003948468188
          },
          {
            "average": 1.310940441,
            "count": 3260737,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5099460602,
            "variance": 0.2600449843
          },
          {
            "average": 1.254731855,
            "count": 3260737,
            "maximum": 16.45800018,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.60017492,
            "variance": 112.3637082
          },
          {
            "average": 0.5416609803,
            "count": 3260737,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4982614162,
            "variance": 0.2482644389
          },
          {
            "average": 410.377817,
            "count": 3260737,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9867252611,
            "variance": 0.9736267408
          },
          {
            "average": 220417514.9,
            "count": 3260737,
            "maximum": 220418457.9,
            "minimum": 220416711.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 558.8964116,
            "variance": 312365.1989
          },
          {
            "average": 0.5416609803,
            "count": 3260737,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4982614162,
            "variance": 0.2482644389
          },
          {
            "average": 0,
            "count": 3260737,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3260737,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3260737,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2630850019,
            "count": 3260737,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4403082365,
            "variance": 0.1938713432
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95815.06833,
          2370982.071,
          3.076310958,
          -95319.00833,
          2371455.691,
          354.016311
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95815.06833469441,
                2370982.0707022245,
                3.07631095806741
              ],
              [
                -95815.06833469441,
                2371455.6907022246,
                3.07631095806741
              ],
              [
                -95319.00833469442,
                2371455.6907022246,
                354.0163109580674
              ],
              [
                -95319.00833469442,
                2370982.0707022245,
                354.0163109580674
              ],
              [
                -95815.06833469441,
                2370982.0707022245,
                3.07631095806741
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:37+00:00",
        "end_time": "2018-09-08T04:38:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2291.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2291.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2291.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2291.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6144684,
            71.32016122,
            3.076310958,
            -156.6004407,
            71.32468885,
            354.016311
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6139599552897,
                  71.32016121834458,
                  3.07631095806741
                ],
                [
                  -156.61446836499795,
                  71.32450990668116,
                  3.07631095806741
                ],
                [
                  -156.60094644235946,
                  71.32468884880095,
                  354.0163109580674
                ],
                [
                  -156.60044065673299,
                  71.32034012040303,
                  354.0163109580674
                ],
                [
                  -156.6139599552897,
                  71.32016121834458,
                  3.07631095806741
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2291.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2291.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:37Z",
            "pc:count": 3260737,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95569.38926,
                "count": 3260737,
                "maximum": -95319.00833,
                "minimum": -95815.06833,
                "name": "X",
                "position": 0,
                "stddev": 135.1180455,
                "variance": 18256.88623
              },
              {
                "average": 2371221.648,
                "count": 3260737,
                "maximum": 2371455.691,
                "minimum": 2370982.071,
                "name": "Y",
                "position": 1,
                "stddev": 129.15747,
                "variance": 16681.65206
              },
              {
                "average": 6.669246767,
                "count": 3260737,
                "maximum": 354.016311,
                "minimum": 3.076310958,
                "name": "Z",
                "position": 2,
                "stddev": 1.075255654,
                "variance": 1.156174721
              },
              {
                "average": 46938.22699,
                "count": 3260737,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8023.017686,
                "variance": 64368812.79
              },
              {
                "average": 1.001081351,
                "count": 3260737,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03494644595,
                "variance": 0.001221254084
              },
              {
                "average": 1.002162395,
                "count": 3260737,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05080291942,
                "variance": 0.002580936622
              },
              {
                "average": 0.5025458968,
                "count": 3260737,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499993595,
                "variance": 0.2499935951
              },
              {
                "average": 0.0003950027248,
                "count": 3260737,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01987075285,
                "variance": 0.0003948468188
              },
              {
                "average": 1.310940441,
                "count": 3260737,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5099460602,
                "variance": 0.2600449843
              },
              {
                "average": 1.254731855,
                "count": 3260737,
                "maximum": 16.45800018,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.60017492,
                "variance": 112.3637082
              },
              {
                "average": 0.5416609803,
                "count": 3260737,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4982614162,
                "variance": 0.2482644389
              },
              {
                "average": 410.377817,
                "count": 3260737,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9867252611,
                "variance": 0.9736267408
              },
              {
                "average": 220417514.9,
                "count": 3260737,
                "maximum": 220418457.9,
                "minimum": 220416711.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 558.8964116,
                "variance": 312365.1989
              },
              {
                "average": 0.5416609803,
                "count": 3260737,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4982614162,
                "variance": 0.2482644389
              },
              {
                "average": 0,
                "count": 3260737,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3260737,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3260737,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2630850019,
                "count": 3260737,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4403082365,
                "variance": 0.1938713432
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95815.06833,
              2370982.071,
              3.076310958,
              -95319.00833,
              2371455.691,
              354.016311
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95815.06833469441,
                    2370982.0707022245,
                    3.07631095806741
                  ],
                  [
                    -95815.06833469441,
                    2371455.6907022246,
                    3.07631095806741
                  ],
                  [
                    -95319.00833469442,
                    2371455.6907022246,
                    354.0163109580674
                  ],
                  [
                    -95319.00833469442,
                    2370982.0707022245,
                    354.0163109580674
                  ],
                  [
                    -95815.06833469441,
                    2370982.0707022245,
                    3.07631095806741
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:37+00:00",
            "end_time": "2018-09-08T04:38:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2183.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61571627051666,
              71.29558130405232,
              2.107219732597553
            ],
            [
              -156.61622439880654,
              71.29992871309182,
              2.107219732597553
            ],
            [
              -156.60272060091683,
              71.30010770313858,
              39.827219732597555
            ],
            [
              -156.6022150899756,
              71.29576025409564,
              39.827219732597555
            ],
            [
              -156.61571627051666,
              71.29558130405232,
              2.107219732597553
            ]
          ]
        ]
      },
      "bbox": [
        -156.6162244,
        71.2955813,
        2.107219733,
        -156.6022151,
        71.3001077,
        39.82721973
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:10Z",
        "pc:count": 4298507,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95732.07663,
            "count": 4298507,
            "maximum": -95488.81371,
            "minimum": -95984.75371,
            "name": "X",
            "position": 0,
            "stddev": 134.3003657,
            "variance": 18036.58822
          },
          {
            "average": 2368556.727,
            "count": 4298507,
            "maximum": 2368785.029,
            "minimum": 2368311.469,
            "name": "Y",
            "position": 1,
            "stddev": 128.3913037,
            "variance": 16484.32686
          },
          {
            "average": 2.899962524,
            "count": 4298507,
            "maximum": 39.82721973,
            "minimum": 2.107219733,
            "name": "Z",
            "position": 2,
            "stddev": 0.1771119109,
            "variance": 0.03136862897
          },
          {
            "average": 36316.59438,
            "count": 4298507,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11750.44754,
            "variance": 138073017.5
          },
          {
            "average": 1.000000233,
            "count": 4298507,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004823265636,
            "variance": 2.326389139e-07
          },
          {
            "average": 1.000000465,
            "count": 4298507,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006821126884,
            "variance": 4.652777196e-07
          },
          {
            "average": 0.4747078462,
            "count": 4298507,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4993599553,
            "variance": 0.249360365
          },
          {
            "average": 0.0004385243528,
            "count": 4298507,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02093638343,
            "variance": 0.0004383321511
          },
          {
            "average": 1.747185709,
            "count": 4298507,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.644662104,
            "variance": 2.704913438
          },
          {
            "average": 3.20863829,
            "count": 4298507,
            "maximum": 20.50200081,
            "minimum": -16.01399994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.61295491,
            "variance": 112.6348119
          },
          {
            "average": 0.4804747323,
            "count": 4298507,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996186766,
            "variance": 0.249618822
          },
          {
            "average": 424.9673519,
            "count": 4298507,
            "maximum": 456,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.83411453,
            "variance": 283.3874119
          },
          {
            "average": 220490341.2,
            "count": 4298507,
            "maximum": 220722990.2,
            "minimum": 220419494.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 127499.7924,
            "variance": 16256197050.0
          },
          {
            "average": 0.4804747323,
            "count": 4298507,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996186766,
            "variance": 0.249618822
          },
          {
            "average": 0,
            "count": 4298507,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4298507,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4298507,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2184537562,
            "count": 4298507,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4131969897,
            "variance": 0.1707317523
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95984.75371,
          2368311.469,
          2.107219733,
          -95488.81371,
          2368785.029,
          39.82721973
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95984.75370593581,
                2368311.468757509,
                2.107219732597553
              ],
              [
                -95984.75370593581,
                2368785.0287575084,
                2.107219732597553
              ],
              [
                -95488.81370593581,
                2368785.0287575084,
                39.827219732597555
              ],
              [
                -95488.81370593581,
                2368311.468757509,
                39.827219732597555
              ],
              [
                -95984.75370593581,
                2368311.468757509,
                2.107219732597553
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:10+00:00",
        "end_time": "2018-09-08T05:24:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2183.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2183.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2183.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2183.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6162244,
            71.2955813,
            2.107219733,
            -156.6022151,
            71.3001077,
            39.82721973
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61571627051666,
                  71.29558130405232,
                  2.107219732597553
                ],
                [
                  -156.61622439880654,
                  71.29992871309182,
                  2.107219732597553
                ],
                [
                  -156.60272060091683,
                  71.30010770313858,
                  39.827219732597555
                ],
                [
                  -156.6022150899756,
                  71.29576025409564,
                  39.827219732597555
                ],
                [
                  -156.61571627051666,
                  71.29558130405232,
                  2.107219732597553
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2183.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2183.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:10Z",
            "pc:count": 4298507,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95732.07663,
                "count": 4298507,
                "maximum": -95488.81371,
                "minimum": -95984.75371,
                "name": "X",
                "position": 0,
                "stddev": 134.3003657,
                "variance": 18036.58822
              },
              {
                "average": 2368556.727,
                "count": 4298507,
                "maximum": 2368785.029,
                "minimum": 2368311.469,
                "name": "Y",
                "position": 1,
                "stddev": 128.3913037,
                "variance": 16484.32686
              },
              {
                "average": 2.899962524,
                "count": 4298507,
                "maximum": 39.82721973,
                "minimum": 2.107219733,
                "name": "Z",
                "position": 2,
                "stddev": 0.1771119109,
                "variance": 0.03136862897
              },
              {
                "average": 36316.59438,
                "count": 4298507,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11750.44754,
                "variance": 138073017.5
              },
              {
                "average": 1.000000233,
                "count": 4298507,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004823265636,
                "variance": 2.326389139e-07
              },
              {
                "average": 1.000000465,
                "count": 4298507,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006821126884,
                "variance": 4.652777196e-07
              },
              {
                "average": 0.4747078462,
                "count": 4298507,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4993599553,
                "variance": 0.249360365
              },
              {
                "average": 0.0004385243528,
                "count": 4298507,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02093638343,
                "variance": 0.0004383321511
              },
              {
                "average": 1.747185709,
                "count": 4298507,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.644662104,
                "variance": 2.704913438
              },
              {
                "average": 3.20863829,
                "count": 4298507,
                "maximum": 20.50200081,
                "minimum": -16.01399994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.61295491,
                "variance": 112.6348119
              },
              {
                "average": 0.4804747323,
                "count": 4298507,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996186766,
                "variance": 0.249618822
              },
              {
                "average": 424.9673519,
                "count": 4298507,
                "maximum": 456,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.83411453,
                "variance": 283.3874119
              },
              {
                "average": 220490341.2,
                "count": 4298507,
                "maximum": 220722990.2,
                "minimum": 220419494.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 127499.7924,
                "variance": 16256197050.0
              },
              {
                "average": 0.4804747323,
                "count": 4298507,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996186766,
                "variance": 0.249618822
              },
              {
                "average": 0,
                "count": 4298507,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4298507,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4298507,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2184537562,
                "count": 4298507,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4131969897,
                "variance": 0.1707317523
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95984.75371,
              2368311.469,
              2.107219733,
              -95488.81371,
              2368785.029,
              39.82721973
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95984.75370593581,
                    2368311.468757509,
                    2.107219732597553
                  ],
                  [
                    -95984.75370593581,
                    2368785.0287575084,
                    2.107219732597553
                  ],
                  [
                    -95488.81370593581,
                    2368785.0287575084,
                    39.827219732597555
                  ],
                  [
                    -95488.81370593581,
                    2368311.468757509,
                    39.827219732597555
                  ],
                  [
                    -95984.75370593581,
                    2368311.468757509,
                    2.107219732597553
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:10+00:00",
            "end_time": "2018-09-08T05:24:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2377.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.52201449360632,
              71.35251804627455,
              0.807948595286065
            ],
            [
              -156.52247590360406,
              71.35660378114062,
              0.807948595286065
            ],
            [
              -156.50893110379408,
              71.35677648553718,
              23.38794859528607
            ],
            [
              -156.50847216667606,
              71.35269071427622,
              23.38794859528607
            ],
            [
              -156.52201449360632,
              71.35251804627455,
              0.807948595286065
            ]
          ]
        ]
      },
      "bbox": [
        -156.5224759,
        71.35251805,
        0.8079485953,
        -156.5084722,
        71.35677649,
        23.3879486
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:28Z",
        "pc:count": 1079709,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92105.83357,
            "count": 1079709,
            "maximum": -91816.60562,
            "minimum": -92312.76562,
            "name": "X",
            "position": 0,
            "stddev": 132.3331215,
            "variance": 17512.05504
          },
          {
            "average": 2374646.798,
            "count": 1079709,
            "maximum": 2374815.018,
            "minimum": 2374370.158,
            "name": "Y",
            "position": 1,
            "stddev": 102.7890143,
            "variance": 10565.58146
          },
          {
            "average": 1.117590101,
            "count": 1079709,
            "maximum": 23.3879486,
            "minimum": 0.8079485953,
            "name": "Z",
            "position": 2,
            "stddev": 0.09423517752,
            "variance": 0.008880268681
          },
          {
            "average": 16138.5879,
            "count": 1079709,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12220.03101,
            "variance": 149329157.8
          },
          {
            "average": 1.000002779,
            "count": 1079709,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001666889705,
            "variance": 2.778521289e-06
          },
          {
            "average": 1.000005557,
            "count": 1079709,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002357334753,
            "variance": 5.557027139e-06
          },
          {
            "average": 0.4994947713,
            "count": 1079709,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999763,
            "variance": 0.2499999763
          },
          {
            "average": 0.0007066718903,
            "count": 1079709,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02657391878,
            "variance": 0.0007061731592
          },
          {
            "average": 7.521463654,
            "count": 1079709,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.648707304,
            "variance": 7.01565038
          },
          {
            "average": 0.5132244189,
            "count": 1079709,
            "maximum": 16.37999916,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.958292424,
            "variance": 63.3344183
          },
          {
            "average": 0.4822095583,
            "count": 1079709,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996836313,
            "variance": 0.2496837314
          },
          {
            "average": 409.0041178,
            "count": 1079709,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7003682384,
            "variance": 0.4905156694
          },
          {
            "average": 220416735.5,
            "count": 1079709,
            "maximum": 220417428.7,
            "minimum": 220415484.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 420.0573806,
            "variance": 176448.203
          },
          {
            "average": 0.4822095583,
            "count": 1079709,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996836313,
            "variance": 0.2496837314
          },
          {
            "average": 0,
            "count": 1079709,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1079709,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1079709,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06558341183,
            "count": 1079709,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2475525897,
            "variance": 0.06128228468
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92312.76562,
          2374370.158,
          0.8079485953,
          -91816.60562,
          2374815.018,
          23.3879486
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92312.76562185855,
                2374370.1581613286,
                0.807948595286065
              ],
              [
                -92312.76562185855,
                2374815.018161329,
                0.807948595286065
              ],
              [
                -91816.60562185854,
                2374815.018161329,
                23.38794859528607
              ],
              [
                -91816.60562185854,
                2374370.1581613286,
                23.38794859528607
              ],
              [
                -92312.76562185855,
                2374370.1581613286,
                0.807948595286065
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:28+00:00",
        "end_time": "2018-09-08T04:18:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2377.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2377.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2377.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2377.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5224759,
            71.35251805,
            0.8079485953,
            -156.5084722,
            71.35677649,
            23.3879486
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.52201449360632,
                  71.35251804627455,
                  0.807948595286065
                ],
                [
                  -156.52247590360406,
                  71.35660378114062,
                  0.807948595286065
                ],
                [
                  -156.50893110379408,
                  71.35677648553718,
                  23.38794859528607
                ],
                [
                  -156.50847216667606,
                  71.35269071427622,
                  23.38794859528607
                ],
                [
                  -156.52201449360632,
                  71.35251804627455,
                  0.807948595286065
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2377.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2377.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:28Z",
            "pc:count": 1079709,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92105.83357,
                "count": 1079709,
                "maximum": -91816.60562,
                "minimum": -92312.76562,
                "name": "X",
                "position": 0,
                "stddev": 132.3331215,
                "variance": 17512.05504
              },
              {
                "average": 2374646.798,
                "count": 1079709,
                "maximum": 2374815.018,
                "minimum": 2374370.158,
                "name": "Y",
                "position": 1,
                "stddev": 102.7890143,
                "variance": 10565.58146
              },
              {
                "average": 1.117590101,
                "count": 1079709,
                "maximum": 23.3879486,
                "minimum": 0.8079485953,
                "name": "Z",
                "position": 2,
                "stddev": 0.09423517752,
                "variance": 0.008880268681
              },
              {
                "average": 16138.5879,
                "count": 1079709,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12220.03101,
                "variance": 149329157.8
              },
              {
                "average": 1.000002779,
                "count": 1079709,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001666889705,
                "variance": 2.778521289e-06
              },
              {
                "average": 1.000005557,
                "count": 1079709,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002357334753,
                "variance": 5.557027139e-06
              },
              {
                "average": 0.4994947713,
                "count": 1079709,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999763,
                "variance": 0.2499999763
              },
              {
                "average": 0.0007066718903,
                "count": 1079709,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02657391878,
                "variance": 0.0007061731592
              },
              {
                "average": 7.521463654,
                "count": 1079709,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.648707304,
                "variance": 7.01565038
              },
              {
                "average": 0.5132244189,
                "count": 1079709,
                "maximum": 16.37999916,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.958292424,
                "variance": 63.3344183
              },
              {
                "average": 0.4822095583,
                "count": 1079709,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996836313,
                "variance": 0.2496837314
              },
              {
                "average": 409.0041178,
                "count": 1079709,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7003682384,
                "variance": 0.4905156694
              },
              {
                "average": 220416735.5,
                "count": 1079709,
                "maximum": 220417428.7,
                "minimum": 220415484.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 420.0573806,
                "variance": 176448.203
              },
              {
                "average": 0.4822095583,
                "count": 1079709,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996836313,
                "variance": 0.2496837314
              },
              {
                "average": 0,
                "count": 1079709,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1079709,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1079709,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06558341183,
                "count": 1079709,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2475525897,
                "variance": 0.06128228468
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92312.76562,
              2374370.158,
              0.8079485953,
              -91816.60562,
              2374815.018,
              23.3879486
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92312.76562185855,
                    2374370.1581613286,
                    0.807948595286065
                  ],
                  [
                    -92312.76562185855,
                    2374815.018161329,
                    0.807948595286065
                  ],
                  [
                    -91816.60562185854,
                    2374815.018161329,
                    23.38794859528607
                  ],
                  [
                    -91816.60562185854,
                    2374370.1581613286,
                    23.38794859528607
                  ],
                  [
                    -92312.76562185855,
                    2374370.1581613286,
                    0.807948595286065
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:28+00:00",
            "end_time": "2018-09-08T04:18:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2206.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60265198152092,
              71.29958319128379,
              -18.858989107084824
            ],
            [
              -156.60315772771108,
              71.30393130240587,
              -18.858989107084824
            ],
            [
              -156.58965250092993,
              71.30410938704269,
              474.6010108929152
            ],
            [
              -156.58914937322558,
              71.2997612361039,
              474.6010108929152
            ],
            [
              -156.60265198152092,
              71.29958319128379,
              -18.858989107084824
            ]
          ]
        ]
      },
      "bbox": [
        -156.6031577,
        71.29958319,
        -18.85898911,
        -156.5891494,
        71.30410939,
        474.6010109
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:15Z",
        "pc:count": 3367013,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95237.27753,
            "count": 3367013,
            "maximum": -94992.63425,
            "minimum": -95488.53425,
            "name": "X",
            "position": 0,
            "stddev": 136.5204214,
            "variance": 18637.82547
          },
          {
            "average": 2368965.894,
            "count": 3367013,
            "maximum": 2369201.504,
            "minimum": 2368727.884,
            "name": "Y",
            "position": 1,
            "stddev": 134.1687439,
            "variance": 18001.25185
          },
          {
            "average": 2.807242167,
            "count": 3367013,
            "maximum": 474.6010109,
            "minimum": -18.85898911,
            "name": "Z",
            "position": 2,
            "stddev": 1.045683916,
            "variance": 1.093454852
          },
          {
            "average": 39566.32921,
            "count": 3367013,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12542.1827,
            "variance": 157306347
          },
          {
            "average": 1.000057618,
            "count": 3367013,
            "maximum": 15,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0224434264,
            "variance": 0.0005037073887
          },
          {
            "average": 1.000115236,
            "count": 3367013,
            "maximum": 15,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03812480812,
            "variance": 0.001453500994
          },
          {
            "average": 0.5024705874,
            "count": 3367013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999939704,
            "variance": 0.2499939704
          },
          {
            "average": 0.0005714263651,
            "count": 3367013,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02389769877,
            "variance": 0.0005711000067
          },
          {
            "average": 1.340086896,
            "count": 3367013,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8839841399,
            "variance": 0.7814279597
          },
          {
            "average": -1.820152645,
            "count": 3367013,
            "maximum": 20.49600029,
            "minimum": -19.61400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78719569,
            "variance": 116.3635909
          },
          {
            "average": 0.4821457476,
            "count": 3367013,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996811982,
            "variance": 0.2496812998
          },
          {
            "average": 425.1145475,
            "count": 3367013,
            "maximum": 456,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.61844505,
            "variance": 276.1727157
          },
          {
            "average": 220492314.1,
            "count": 3367013,
            "maximum": 220722995.9,
            "minimum": 220419506,
            "name": "GpsTime",
            "position": 12,
            "stddev": 128650.1609,
            "variance": 16550863910.0
          },
          {
            "average": 0.4821457476,
            "count": 3367013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996811982,
            "variance": 0.2496812998
          },
          {
            "average": 0,
            "count": 3367013,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3367013,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3367013,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2379661142,
            "count": 3367013,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4258383455,
            "variance": 0.1813382965
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95488.53425,
          2368727.884,
          -18.85898911,
          -94992.63425,
          2369201.504,
          474.6010109
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95488.53425065165,
                2368727.8843741147,
                -18.858989107084824
              ],
              [
                -95488.53425065165,
                2369201.504374115,
                -18.858989107084824
              ],
              [
                -94992.63425065165,
                2369201.504374115,
                474.6010108929152
              ],
              [
                -94992.63425065165,
                2368727.8843741147,
                474.6010108929152
              ],
              [
                -95488.53425065165,
                2368727.8843741147,
                -18.858989107084824
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:15+00:00",
        "end_time": "2018-09-08T05:25:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2206.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2206.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2206.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2206.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6031577,
            71.29958319,
            -18.85898911,
            -156.5891494,
            71.30410939,
            474.6010109
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60265198152092,
                  71.29958319128379,
                  -18.858989107084824
                ],
                [
                  -156.60315772771108,
                  71.30393130240587,
                  -18.858989107084824
                ],
                [
                  -156.58965250092993,
                  71.30410938704269,
                  474.6010108929152
                ],
                [
                  -156.58914937322558,
                  71.2997612361039,
                  474.6010108929152
                ],
                [
                  -156.60265198152092,
                  71.29958319128379,
                  -18.858989107084824
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2206.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2206.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:15Z",
            "pc:count": 3367013,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95237.27753,
                "count": 3367013,
                "maximum": -94992.63425,
                "minimum": -95488.53425,
                "name": "X",
                "position": 0,
                "stddev": 136.5204214,
                "variance": 18637.82547
              },
              {
                "average": 2368965.894,
                "count": 3367013,
                "maximum": 2369201.504,
                "minimum": 2368727.884,
                "name": "Y",
                "position": 1,
                "stddev": 134.1687439,
                "variance": 18001.25185
              },
              {
                "average": 2.807242167,
                "count": 3367013,
                "maximum": 474.6010109,
                "minimum": -18.85898911,
                "name": "Z",
                "position": 2,
                "stddev": 1.045683916,
                "variance": 1.093454852
              },
              {
                "average": 39566.32921,
                "count": 3367013,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12542.1827,
                "variance": 157306347
              },
              {
                "average": 1.000057618,
                "count": 3367013,
                "maximum": 15,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0224434264,
                "variance": 0.0005037073887
              },
              {
                "average": 1.000115236,
                "count": 3367013,
                "maximum": 15,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03812480812,
                "variance": 0.001453500994
              },
              {
                "average": 0.5024705874,
                "count": 3367013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999939704,
                "variance": 0.2499939704
              },
              {
                "average": 0.0005714263651,
                "count": 3367013,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02389769877,
                "variance": 0.0005711000067
              },
              {
                "average": 1.340086896,
                "count": 3367013,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8839841399,
                "variance": 0.7814279597
              },
              {
                "average": -1.820152645,
                "count": 3367013,
                "maximum": 20.49600029,
                "minimum": -19.61400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78719569,
                "variance": 116.3635909
              },
              {
                "average": 0.4821457476,
                "count": 3367013,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996811982,
                "variance": 0.2496812998
              },
              {
                "average": 425.1145475,
                "count": 3367013,
                "maximum": 456,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.61844505,
                "variance": 276.1727157
              },
              {
                "average": 220492314.1,
                "count": 3367013,
                "maximum": 220722995.9,
                "minimum": 220419506,
                "name": "GpsTime",
                "position": 12,
                "stddev": 128650.1609,
                "variance": 16550863910.0
              },
              {
                "average": 0.4821457476,
                "count": 3367013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996811982,
                "variance": 0.2496812998
              },
              {
                "average": 0,
                "count": 3367013,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3367013,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3367013,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2379661142,
                "count": 3367013,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4258383455,
                "variance": 0.1813382965
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95488.53425,
              2368727.884,
              -18.85898911,
              -94992.63425,
              2369201.504,
              474.6010109
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95488.53425065165,
                    2368727.8843741147,
                    -18.858989107084824
                  ],
                  [
                    -95488.53425065165,
                    2369201.504374115,
                    -18.858989107084824
                  ],
                  [
                    -94992.63425065165,
                    2369201.504374115,
                    474.6010108929152
                  ],
                  [
                    -94992.63425065165,
                    2368727.8843741147,
                    474.6010108929152
                  ],
                  [
                    -95488.53425065165,
                    2368727.8843741147,
                    -18.858989107084824
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:15+00:00",
            "end_time": "2018-09-08T05:25:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2252.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72954473524376,
              71.31277739511125,
              -12.509164849733395
            ],
            [
              -156.73007532629575,
              71.31712464283197,
              -12.509164849733395
            ],
            [
              -156.71656098876625,
              71.31731147436679,
              26.250835150266603
            ],
            [
              -156.71603301835503,
              71.31296418485017,
              26.250835150266603
            ],
            [
              -156.72954473524376,
              71.31277739511125,
              -12.509164849733395
            ]
          ]
        ]
      },
      "bbox": [
        -156.7300753,
        71.3127774,
        -12.50916485,
        -156.716033,
        71.31731147,
        26.25083515
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:24Z",
        "pc:count": 2503816,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99807.63379,
            "count": 2503816,
            "maximum": -99586.54804,
            "minimum": -100082.528,
            "name": "X",
            "position": 0,
            "stddev": 132.4596504,
            "variance": 17545.55898
          },
          {
            "average": 2370560.059,
            "count": 2503816,
            "maximum": 2370823.127,
            "minimum": 2370349.607,
            "name": "Y",
            "position": 1,
            "stddev": 125.6109224,
            "variance": 15778.10382
          },
          {
            "average": 3.891315194,
            "count": 2503816,
            "maximum": 26.25083515,
            "minimum": -12.50916485,
            "name": "Z",
            "position": 2,
            "stddev": 2.489610817,
            "variance": 6.198162022
          },
          {
            "average": 23424.23189,
            "count": 2503816,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10397.25878,
            "variance": 108102990.1
          },
          {
            "average": 1.006688191,
            "count": 2503816,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08314235452,
            "variance": 0.006912651115
          },
          {
            "average": 1.013365199,
            "count": 2503816,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1182867168,
            "variance": 0.01399174738
          },
          {
            "average": 0.5037778335,
            "count": 2503816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999858276,
            "variance": 0.2499858278
          },
          {
            "average": 0.0004920489365,
            "count": 2503816,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0221767225,
            "variance": 0.0004918070208
          },
          {
            "average": 3.245988923,
            "count": 2503816,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.229541608,
            "variance": 10.429939
          },
          {
            "average": 0.07234697938,
            "count": 2503816,
            "maximum": 16.45199966,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.699392643,
            "variance": 94.07821765
          },
          {
            "average": 0.5280192314,
            "count": 2503816,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499214405,
            "variance": 0.2492150222
          },
          {
            "average": 404.7853572,
            "count": 2503816,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8622211381,
            "variance": 0.743425291
          },
          {
            "average": 220414350.4,
            "count": 2503816,
            "maximum": 220415024.1,
            "minimum": 220413389.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 486.3100652,
            "variance": 236497.4795
          },
          {
            "average": 0.5280192314,
            "count": 2503816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499214405,
            "variance": 0.2492150222
          },
          {
            "average": 0,
            "count": 2503816,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2503816,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2503816,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1946808392,
            "count": 2503816,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3959548871,
            "variance": 0.1567802726
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100082.528,
          2370349.607,
          -12.50916485,
          -99586.54804,
          2370823.127,
          26.25083515
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100082.52803564105,
                2370349.6065488956,
                -12.509164849733395
              ],
              [
                -100082.52803564105,
                2370823.126548895,
                -12.509164849733395
              ],
              [
                -99586.54803564104,
                2370823.126548895,
                26.250835150266603
              ],
              [
                -99586.54803564104,
                2370349.6065488956,
                26.250835150266603
              ],
              [
                -100082.52803564105,
                2370349.6065488956,
                -12.509164849733395
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:24+00:00",
        "end_time": "2018-09-08T03:43:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2252.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2252.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2252.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2252.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7300753,
            71.3127774,
            -12.50916485,
            -156.716033,
            71.31731147,
            26.25083515
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72954473524376,
                  71.31277739511125,
                  -12.509164849733395
                ],
                [
                  -156.73007532629575,
                  71.31712464283197,
                  -12.509164849733395
                ],
                [
                  -156.71656098876625,
                  71.31731147436679,
                  26.250835150266603
                ],
                [
                  -156.71603301835503,
                  71.31296418485017,
                  26.250835150266603
                ],
                [
                  -156.72954473524376,
                  71.31277739511125,
                  -12.509164849733395
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2252.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2252.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:24Z",
            "pc:count": 2503816,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99807.63379,
                "count": 2503816,
                "maximum": -99586.54804,
                "minimum": -100082.528,
                "name": "X",
                "position": 0,
                "stddev": 132.4596504,
                "variance": 17545.55898
              },
              {
                "average": 2370560.059,
                "count": 2503816,
                "maximum": 2370823.127,
                "minimum": 2370349.607,
                "name": "Y",
                "position": 1,
                "stddev": 125.6109224,
                "variance": 15778.10382
              },
              {
                "average": 3.891315194,
                "count": 2503816,
                "maximum": 26.25083515,
                "minimum": -12.50916485,
                "name": "Z",
                "position": 2,
                "stddev": 2.489610817,
                "variance": 6.198162022
              },
              {
                "average": 23424.23189,
                "count": 2503816,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10397.25878,
                "variance": 108102990.1
              },
              {
                "average": 1.006688191,
                "count": 2503816,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08314235452,
                "variance": 0.006912651115
              },
              {
                "average": 1.013365199,
                "count": 2503816,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1182867168,
                "variance": 0.01399174738
              },
              {
                "average": 0.5037778335,
                "count": 2503816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999858276,
                "variance": 0.2499858278
              },
              {
                "average": 0.0004920489365,
                "count": 2503816,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0221767225,
                "variance": 0.0004918070208
              },
              {
                "average": 3.245988923,
                "count": 2503816,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.229541608,
                "variance": 10.429939
              },
              {
                "average": 0.07234697938,
                "count": 2503816,
                "maximum": 16.45199966,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.699392643,
                "variance": 94.07821765
              },
              {
                "average": 0.5280192314,
                "count": 2503816,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499214405,
                "variance": 0.2492150222
              },
              {
                "average": 404.7853572,
                "count": 2503816,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8622211381,
                "variance": 0.743425291
              },
              {
                "average": 220414350.4,
                "count": 2503816,
                "maximum": 220415024.1,
                "minimum": 220413389.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 486.3100652,
                "variance": 236497.4795
              },
              {
                "average": 0.5280192314,
                "count": 2503816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499214405,
                "variance": 0.2492150222
              },
              {
                "average": 0,
                "count": 2503816,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2503816,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2503816,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1946808392,
                "count": 2503816,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3959548871,
                "variance": 0.1567802726
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100082.528,
              2370349.607,
              -12.50916485,
              -99586.54804,
              2370823.127,
              26.25083515
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100082.52803564105,
                    2370349.6065488956,
                    -12.509164849733395
                  ],
                  [
                    -100082.52803564105,
                    2370823.126548895,
                    -12.509164849733395
                  ],
                  [
                    -99586.54803564104,
                    2370823.126548895,
                    26.250835150266603
                  ],
                  [
                    -99586.54803564104,
                    2370349.6065488956,
                    26.250835150266603
                  ],
                  [
                    -100082.52803564105,
                    2370349.6065488956,
                    -12.509164849733395
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:24+00:00",
            "end_time": "2018-09-08T03:43:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2283.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71621921052144,
              71.32088581694912,
              0.85566702665433
            ],
            [
              -156.7167419595938,
              71.3251885343047,
              0.85566702665433
            ],
            [
              -156.70322863618344,
              71.32537437936058,
              3.77566702665433
            ],
            [
              -156.70270848155334,
              71.32107162083632,
              3.77566702665433
            ],
            [
              -156.71621921052144,
              71.32088581694912,
              0.85566702665433
            ]
          ]
        ]
      },
      "bbox": [
        -156.716742,
        71.32088582,
        0.8556670267,
        -156.7027085,
        71.32537438,
        3.775667027
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:31Z",
        "pc:count": 1978777,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99306.17932,
            "count": 1978777,
            "maximum": -99062.36037,
            "minimum": -99558.12037,
            "name": "X",
            "position": 0,
            "stddev": 132.7258327,
            "variance": 17616.14667
          },
          {
            "average": 2371446.553,
            "count": 1978777,
            "maximum": 2371679.921,
            "minimum": 2371211.281,
            "name": "Y",
            "position": 1,
            "stddev": 127.0516159,
            "variance": 16142.1131
          },
          {
            "average": 1.163230749,
            "count": 1978777,
            "maximum": 3.775667027,
            "minimum": 0.8556670267,
            "name": "Z",
            "position": 2,
            "stddev": 0.1097925338,
            "variance": 0.01205440048
          },
          {
            "average": 14488.03299,
            "count": 1978777,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10479.14804,
            "variance": 109812543.7
          },
          {
            "average": 1,
            "count": 1978777,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1978777,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4924738866,
            "count": 1978777,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999434807,
            "variance": 0.2499434839
          },
          {
            "average": 0.0005306307886,
            "count": 1978777,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.023029318,
            "variance": 0.0005303494876
          },
          {
            "average": 7.486936123,
            "count": 1978777,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.654109141,
            "variance": 7.044295333
          },
          {
            "average": 3.33265484,
            "count": 1978777,
            "maximum": 16.22999954,
            "minimum": -15.96000004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.021007857,
            "variance": 49.29455133
          },
          {
            "average": 0.4879640303,
            "count": 1978777,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998552407,
            "variance": 0.2498552617
          },
          {
            "average": 403.5522623,
            "count": 1978777,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6925244893,
            "variance": 0.4795901683
          },
          {
            "average": 220413671.7,
            "count": 1978777,
            "maximum": 220414491.9,
            "minimum": 220412807,
            "name": "GpsTime",
            "position": 12,
            "stddev": 377.0424581,
            "variance": 142161.0152
          },
          {
            "average": 0.4879640303,
            "count": 1978777,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998552407,
            "variance": 0.2498552617
          },
          {
            "average": 0,
            "count": 1978777,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1978777,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1978777,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04435820711,
            "count": 1978777,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2058897229,
            "variance": 0.042390578
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99558.12037,
          2371211.281,
          0.8556670267,
          -99062.36037,
          2371679.921,
          3.775667027
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99558.12036969405,
                2371211.280964603,
                0.85566702665433
              ],
              [
                -99558.12036969405,
                2371679.920964603,
                0.85566702665433
              ],
              [
                -99062.36036969404,
                2371679.920964603,
                3.77566702665433
              ],
              [
                -99062.36036969404,
                2371211.280964603,
                3.77566702665433
              ],
              [
                -99558.12036969405,
                2371211.280964603,
                0.85566702665433
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:31+00:00",
        "end_time": "2018-09-08T03:33:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2283.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2283.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2283.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2283.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.716742,
            71.32088582,
            0.8556670267,
            -156.7027085,
            71.32537438,
            3.775667027
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71621921052144,
                  71.32088581694912,
                  0.85566702665433
                ],
                [
                  -156.7167419595938,
                  71.3251885343047,
                  0.85566702665433
                ],
                [
                  -156.70322863618344,
                  71.32537437936058,
                  3.77566702665433
                ],
                [
                  -156.70270848155334,
                  71.32107162083632,
                  3.77566702665433
                ],
                [
                  -156.71621921052144,
                  71.32088581694912,
                  0.85566702665433
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2283.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2283.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:31Z",
            "pc:count": 1978777,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99306.17932,
                "count": 1978777,
                "maximum": -99062.36037,
                "minimum": -99558.12037,
                "name": "X",
                "position": 0,
                "stddev": 132.7258327,
                "variance": 17616.14667
              },
              {
                "average": 2371446.553,
                "count": 1978777,
                "maximum": 2371679.921,
                "minimum": 2371211.281,
                "name": "Y",
                "position": 1,
                "stddev": 127.0516159,
                "variance": 16142.1131
              },
              {
                "average": 1.163230749,
                "count": 1978777,
                "maximum": 3.775667027,
                "minimum": 0.8556670267,
                "name": "Z",
                "position": 2,
                "stddev": 0.1097925338,
                "variance": 0.01205440048
              },
              {
                "average": 14488.03299,
                "count": 1978777,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10479.14804,
                "variance": 109812543.7
              },
              {
                "average": 1,
                "count": 1978777,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1978777,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4924738866,
                "count": 1978777,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999434807,
                "variance": 0.2499434839
              },
              {
                "average": 0.0005306307886,
                "count": 1978777,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.023029318,
                "variance": 0.0005303494876
              },
              {
                "average": 7.486936123,
                "count": 1978777,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.654109141,
                "variance": 7.044295333
              },
              {
                "average": 3.33265484,
                "count": 1978777,
                "maximum": 16.22999954,
                "minimum": -15.96000004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.021007857,
                "variance": 49.29455133
              },
              {
                "average": 0.4879640303,
                "count": 1978777,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998552407,
                "variance": 0.2498552617
              },
              {
                "average": 403.5522623,
                "count": 1978777,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6925244893,
                "variance": 0.4795901683
              },
              {
                "average": 220413671.7,
                "count": 1978777,
                "maximum": 220414491.9,
                "minimum": 220412807,
                "name": "GpsTime",
                "position": 12,
                "stddev": 377.0424581,
                "variance": 142161.0152
              },
              {
                "average": 0.4879640303,
                "count": 1978777,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998552407,
                "variance": 0.2498552617
              },
              {
                "average": 0,
                "count": 1978777,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1978777,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1978777,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04435820711,
                "count": 1978777,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2058897229,
                "variance": 0.042390578
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99558.12037,
              2371211.281,
              0.8556670267,
              -99062.36037,
              2371679.921,
              3.775667027
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99558.12036969405,
                    2371211.280964603,
                    0.85566702665433
                  ],
                  [
                    -99558.12036969405,
                    2371679.920964603,
                    0.85566702665433
                  ],
                  [
                    -99062.36036969404,
                    2371679.920964603,
                    3.77566702665433
                  ],
                  [
                    -99062.36036969404,
                    2371211.280964603,
                    3.77566702665433
                  ],
                  [
                    -99558.12036969405,
                    2371211.280964603,
                    0.85566702665433
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:31+00:00",
            "end_time": "2018-09-08T03:33:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2378.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.508984812562,
              71.35537608279495,
              0.87571372015674
            ],
            [
              -156.50911220381903,
              71.35650999770658,
              0.87571372015674
            ],
            [
              -156.50401762348747,
              71.35657472085637,
              1.39571372015674
            ],
            [
              -156.50389049039873,
              71.35544080215878,
              1.39571372015674
            ],
            [
              -156.508984812562,
              71.35537608279495,
              0.87571372015674
            ]
          ]
        ]
      },
      "bbox": [
        -156.5091122,
        71.35537608,
        0.8757137202,
        -156.5038905,
        71.35657472,
        1.39571372
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:30Z",
        "pc:count": 85450,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91760.05504,
            "count": 85450,
            "maximum": -91637.70517,
            "minimum": -91824.32517,
            "name": "X",
            "position": 0,
            "stddev": 42.96501986,
            "variance": 1845.992931
          },
          {
            "average": 2374741.2,
            "count": 85450,
            "maximum": 2374786.295,
            "minimum": 2374662.835,
            "name": "Y",
            "position": 1,
            "stddev": 28.17955959,
            "variance": 794.0875786
          },
          {
            "average": 1.11300547,
            "count": 85450,
            "maximum": 1.39571372,
            "minimum": 0.8757137202,
            "name": "Z",
            "position": 2,
            "stddev": 0.06037463514,
            "variance": 0.003645096569
          },
          {
            "average": 16784.02121,
            "count": 85450,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12050.02289,
            "variance": 145203051.7
          },
          {
            "average": 1,
            "count": 85450,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 85450,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4877823288,
            "count": 85450,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998536311,
            "variance": 0.2498536525
          },
          {
            "average": 0.0004447045056,
            "count": 85450,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02108345193,
            "variance": 0.0004445119455
          },
          {
            "average": 7.879391457,
            "count": 85450,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.183366492,
            "variance": 4.767089239
          },
          {
            "average": 4.991062188,
            "count": 85450,
            "maximum": 10.80000019,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 4.761366301,
            "variance": 22.67060906
          },
          {
            "average": 0.4601053248,
            "count": 85450,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49840879,
            "variance": 0.248411322
          },
          {
            "average": 409.3532241,
            "count": 85450,
            "maximum": 410,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5653745726,
            "variance": 0.3196484073
          },
          {
            "average": 220416931.1,
            "count": 85450,
            "maximum": 220417430.5,
            "minimum": 220416288.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 411.1973685,
            "variance": 169083.2759
          },
          {
            "average": 0.4601053248,
            "count": 85450,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49840879,
            "variance": 0.248411322
          },
          {
            "average": 0,
            "count": 85450,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 85450,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 85450,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04559391457,
            "count": 85450,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2086039759,
            "variance": 0.04351561878
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91824.32517,
          2374662.835,
          0.8757137202,
          -91637.70517,
          2374786.295,
          1.39571372
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91824.32517254748,
                2374662.8350445214,
                0.87571372015674
              ],
              [
                -91824.32517254748,
                2374786.2950445213,
                0.87571372015674
              ],
              [
                -91637.70517254749,
                2374786.2950445213,
                1.39571372015674
              ],
              [
                -91637.70517254749,
                2374662.8350445214,
                1.39571372015674
              ],
              [
                -91824.32517254748,
                2374662.8350445214,
                0.87571372015674
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:30+00:00",
        "end_time": "2018-09-08T04:31:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2378.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2378.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2378.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2378.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5091122,
            71.35537608,
            0.8757137202,
            -156.5038905,
            71.35657472,
            1.39571372
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.508984812562,
                  71.35537608279495,
                  0.87571372015674
                ],
                [
                  -156.50911220381903,
                  71.35650999770658,
                  0.87571372015674
                ],
                [
                  -156.50401762348747,
                  71.35657472085637,
                  1.39571372015674
                ],
                [
                  -156.50389049039873,
                  71.35544080215878,
                  1.39571372015674
                ],
                [
                  -156.508984812562,
                  71.35537608279495,
                  0.87571372015674
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2378.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2378.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:30Z",
            "pc:count": 85450,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91760.05504,
                "count": 85450,
                "maximum": -91637.70517,
                "minimum": -91824.32517,
                "name": "X",
                "position": 0,
                "stddev": 42.96501986,
                "variance": 1845.992931
              },
              {
                "average": 2374741.2,
                "count": 85450,
                "maximum": 2374786.295,
                "minimum": 2374662.835,
                "name": "Y",
                "position": 1,
                "stddev": 28.17955959,
                "variance": 794.0875786
              },
              {
                "average": 1.11300547,
                "count": 85450,
                "maximum": 1.39571372,
                "minimum": 0.8757137202,
                "name": "Z",
                "position": 2,
                "stddev": 0.06037463514,
                "variance": 0.003645096569
              },
              {
                "average": 16784.02121,
                "count": 85450,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12050.02289,
                "variance": 145203051.7
              },
              {
                "average": 1,
                "count": 85450,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 85450,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4877823288,
                "count": 85450,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998536311,
                "variance": 0.2498536525
              },
              {
                "average": 0.0004447045056,
                "count": 85450,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02108345193,
                "variance": 0.0004445119455
              },
              {
                "average": 7.879391457,
                "count": 85450,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.183366492,
                "variance": 4.767089239
              },
              {
                "average": 4.991062188,
                "count": 85450,
                "maximum": 10.80000019,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 4.761366301,
                "variance": 22.67060906
              },
              {
                "average": 0.4601053248,
                "count": 85450,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49840879,
                "variance": 0.248411322
              },
              {
                "average": 409.3532241,
                "count": 85450,
                "maximum": 410,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5653745726,
                "variance": 0.3196484073
              },
              {
                "average": 220416931.1,
                "count": 85450,
                "maximum": 220417430.5,
                "minimum": 220416288.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 411.1973685,
                "variance": 169083.2759
              },
              {
                "average": 0.4601053248,
                "count": 85450,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49840879,
                "variance": 0.248411322
              },
              {
                "average": 0,
                "count": 85450,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 85450,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 85450,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04559391457,
                "count": 85450,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2086039759,
                "variance": 0.04351561878
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91824.32517,
              2374662.835,
              0.8757137202,
              -91637.70517,
              2374786.295,
              1.39571372
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91824.32517254748,
                    2374662.8350445214,
                    0.87571372015674
                  ],
                  [
                    -91824.32517254748,
                    2374786.2950445213,
                    0.87571372015674
                  ],
                  [
                    -91637.70517254749,
                    2374786.2950445213,
                    1.39571372015674
                  ],
                  [
                    -91637.70517254749,
                    2374662.8350445214,
                    1.39571372015674
                  ],
                  [
                    -91824.32517254748,
                    2374662.8350445214,
                    0.87571372015674
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:30+00:00",
            "end_time": "2018-09-08T04:31:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2379.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.36220660736055,
              71.35438112590064,
              0.97294562005703
            ],
            [
              -156.36230383029348,
              71.35530037548617,
              0.97294562005703
            ],
            [
              -156.35525606751764,
              71.35538463270588,
              1.41294562005703
            ],
            [
              -156.35515913415503,
              71.35446537912503,
              1.41294562005703
            ],
            [
              -156.36220660736055,
              71.35438112590064,
              0.97294562005703
            ]
          ]
        ]
      },
      "bbox": [
        -156.3623038,
        71.35438113,
        0.9729456201,
        -156.3551591,
        71.35538463,
        1.41294562
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:11Z",
        "pc:count": 87528,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86286.88752,
            "count": 87528,
            "maximum": -86200.53302,
            "minimum": -86458.69302,
            "name": "X",
            "position": 0,
            "stddev": 59.40869034,
            "variance": 3529.392488
          },
          {
            "average": 2374418.825,
            "count": 87528,
            "maximum": 2374457.718,
            "minimum": 2374357.638,
            "name": "Y",
            "position": 1,
            "stddev": 21.96978327,
            "variance": 482.6713767
          },
          {
            "average": 1.183584844,
            "count": 87528,
            "maximum": 1.41294562,
            "minimum": 0.9729456201,
            "name": "Z",
            "position": 2,
            "stddev": 0.05359089388,
            "variance": 0.002871983907
          },
          {
            "average": 17892.12261,
            "count": 87528,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12779.09807,
            "variance": 163305347.6
          },
          {
            "average": 1,
            "count": 87528,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 87528,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.484599214,
            "count": 87528,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4997656144,
            "variance": 0.2497656693
          },
          {
            "average": 0.0003427474637,
            "count": 87528,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01851037283,
            "variance": 0.0003426339024
          },
          {
            "average": 8.009939676,
            "count": 87528,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.996350231,
            "variance": 3.985414243
          },
          {
            "average": 5.51299911,
            "count": 87528,
            "maximum": 12.27000046,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 3.614909943,
            "variance": 13.06757389
          },
          {
            "average": 0.4809203912,
            "count": 87528,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996386901,
            "variance": 0.2496388206
          },
          {
            "average": 419.4703066,
            "count": 87528,
            "maximum": 420,
            "minimum": 418,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5399995109,
            "variance": 0.2915994718
          },
          {
            "average": 220422500.8,
            "count": 87528,
            "maximum": 220422991.5,
            "minimum": 220421874.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 481.7856556,
            "variance": 232117.4179
          },
          {
            "average": 0.4809203912,
            "count": 87528,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996386901,
            "variance": 0.2496388206
          },
          {
            "average": 0,
            "count": 87528,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 87528,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 87528,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01708024861,
            "count": 87528,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1295712373,
            "variance": 0.01678870552
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86458.69302,
          2374357.638,
          0.9729456201,
          -86200.53302,
          2374457.718,
          1.41294562
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86458.69302358585,
                2374357.6380227036,
                0.97294562005703
              ],
              [
                -86458.69302358585,
                2374457.7180227037,
                0.97294562005703
              ],
              [
                -86200.53302358584,
                2374457.7180227037,
                1.41294562005703
              ],
              [
                -86200.53302358584,
                2374357.6380227036,
                1.41294562005703
              ],
              [
                -86458.69302358585,
                2374357.6380227036,
                0.97294562005703
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:11+00:00",
        "end_time": "2018-09-08T06:04:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2379.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2379.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2379.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2379.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3623038,
            71.35438113,
            0.9729456201,
            -156.3551591,
            71.35538463,
            1.41294562
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.36220660736055,
                  71.35438112590064,
                  0.97294562005703
                ],
                [
                  -156.36230383029348,
                  71.35530037548617,
                  0.97294562005703
                ],
                [
                  -156.35525606751764,
                  71.35538463270588,
                  1.41294562005703
                ],
                [
                  -156.35515913415503,
                  71.35446537912503,
                  1.41294562005703
                ],
                [
                  -156.36220660736055,
                  71.35438112590064,
                  0.97294562005703
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2379.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2379.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:11Z",
            "pc:count": 87528,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86286.88752,
                "count": 87528,
                "maximum": -86200.53302,
                "minimum": -86458.69302,
                "name": "X",
                "position": 0,
                "stddev": 59.40869034,
                "variance": 3529.392488
              },
              {
                "average": 2374418.825,
                "count": 87528,
                "maximum": 2374457.718,
                "minimum": 2374357.638,
                "name": "Y",
                "position": 1,
                "stddev": 21.96978327,
                "variance": 482.6713767
              },
              {
                "average": 1.183584844,
                "count": 87528,
                "maximum": 1.41294562,
                "minimum": 0.9729456201,
                "name": "Z",
                "position": 2,
                "stddev": 0.05359089388,
                "variance": 0.002871983907
              },
              {
                "average": 17892.12261,
                "count": 87528,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12779.09807,
                "variance": 163305347.6
              },
              {
                "average": 1,
                "count": 87528,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 87528,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.484599214,
                "count": 87528,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4997656144,
                "variance": 0.2497656693
              },
              {
                "average": 0.0003427474637,
                "count": 87528,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01851037283,
                "variance": 0.0003426339024
              },
              {
                "average": 8.009939676,
                "count": 87528,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.996350231,
                "variance": 3.985414243
              },
              {
                "average": 5.51299911,
                "count": 87528,
                "maximum": 12.27000046,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 3.614909943,
                "variance": 13.06757389
              },
              {
                "average": 0.4809203912,
                "count": 87528,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996386901,
                "variance": 0.2496388206
              },
              {
                "average": 419.4703066,
                "count": 87528,
                "maximum": 420,
                "minimum": 418,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5399995109,
                "variance": 0.2915994718
              },
              {
                "average": 220422500.8,
                "count": 87528,
                "maximum": 220422991.5,
                "minimum": 220421874.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 481.7856556,
                "variance": 232117.4179
              },
              {
                "average": 0.4809203912,
                "count": 87528,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996386901,
                "variance": 0.2496388206
              },
              {
                "average": 0,
                "count": 87528,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 87528,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 87528,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01708024861,
                "count": 87528,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1295712373,
                "variance": 0.01678870552
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86458.69302,
              2374357.638,
              0.9729456201,
              -86200.53302,
              2374457.718,
              1.41294562
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86458.69302358585,
                    2374357.6380227036,
                    0.97294562005703
                  ],
                  [
                    -86458.69302358585,
                    2374457.7180227037,
                    0.97294562005703
                  ],
                  [
                    -86200.53302358584,
                    2374457.7180227037,
                    1.41294562005703
                  ],
                  [
                    -86200.53302358584,
                    2374357.6380227036,
                    1.41294562005703
                  ],
                  [
                    -86458.69302358585,
                    2374357.6380227036,
                    0.97294562005703
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:11+00:00",
            "end_time": "2018-09-08T06:04:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2326.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66424309766862,
              71.33282061545135,
              -15.026414484345153
            ],
            [
              -156.66476142225403,
              71.33716826150636,
              -15.026414484345153
            ],
            [
              -156.65123334044338,
              71.33735065371687,
              22.17358551565485
            ],
            [
              -156.65071764160788,
              71.33300296680802,
              22.17358551565485
            ],
            [
              -156.66424309766862,
              71.33282061545135,
              -15.026414484345153
            ]
          ]
        ]
      },
      "bbox": [
        -156.6647614,
        71.33282062,
        -15.02641448,
        -156.6507176,
        71.33735065,
        22.17358552
      ],
      "properties": {
        "datetime": "2018-09-08T04:11:18Z",
        "pc:count": 2289614,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97338.90678,
            "count": 2289614,
            "maximum": -97105.95178,
            "minimum": -97601.97178,
            "name": "X",
            "position": 0,
            "stddev": 134.6335933,
            "variance": 18126.20443
          },
          {
            "average": 2372653.739,
            "count": 2289614,
            "maximum": 2372905.327,
            "minimum": 2372431.847,
            "name": "Y",
            "position": 1,
            "stddev": 126.8139431,
            "variance": 16081.77616
          },
          {
            "average": 2.536501653,
            "count": 2289614,
            "maximum": 22.17358552,
            "minimum": -15.02641448,
            "name": "Z",
            "position": 2,
            "stddev": 1.421773608,
            "variance": 2.021440191
          },
          {
            "average": 17430.36977,
            "count": 2289614,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8610.790705,
            "variance": 74145716.56
          },
          {
            "average": 1.002899179,
            "count": 2289614,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05387953049,
            "variance": 0.002903003806
          },
          {
            "average": 1.005798794,
            "count": 2289614,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07616992819,
            "variance": 0.005801857961
          },
          {
            "average": 0.5010923239,
            "count": 2289614,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998916,
            "variance": 0.249998916
          },
          {
            "average": 0.0004668909257,
            "count": 2289614,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02160261888,
            "variance": 0.0004666731424
          },
          {
            "average": 3.835087486,
            "count": 2289614,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.530555038,
            "variance": 12.46481888
          },
          {
            "average": 1.630650675,
            "count": 2289614,
            "maximum": 16.32600021,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.718022611,
            "variance": 94.43996346
          },
          {
            "average": 0.5579909976,
            "count": 2289614,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4966257665,
            "variance": 0.2466371519
          },
          {
            "average": 404.3378644,
            "count": 2289614,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9549560764,
            "variance": 0.9119411078
          },
          {
            "average": 220414110.1,
            "count": 2289614,
            "maximum": 220415078.4,
            "minimum": 220413332.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.8670624,
            "variance": 292537.1792
          },
          {
            "average": 0.5579909976,
            "count": 2289614,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4966257665,
            "variance": 0.2466371519
          },
          {
            "average": 0,
            "count": 2289614,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2289614,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2289614,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2290914538,
            "count": 2289614,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4202483037,
            "variance": 0.1766086368
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97601.97178,
          2372431.847,
          -15.02641448,
          -97105.95178,
          2372905.327,
          22.17358552
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97601.97178163585,
                2372431.8467012458,
                -15.026414484345153
              ],
              [
                -97601.97178163585,
                2372905.326701246,
                -15.026414484345153
              ],
              [
                -97105.95178163586,
                2372905.326701246,
                22.17358551565485
              ],
              [
                -97105.95178163586,
                2372431.8467012458,
                22.17358551565485
              ],
              [
                -97601.97178163585,
                2372431.8467012458,
                -15.026414484345153
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:11:18+00:00",
        "end_time": "2018-09-08T03:42:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2326.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2326.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2326.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2326.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6647614,
            71.33282062,
            -15.02641448,
            -156.6507176,
            71.33735065,
            22.17358552
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66424309766862,
                  71.33282061545135,
                  -15.026414484345153
                ],
                [
                  -156.66476142225403,
                  71.33716826150636,
                  -15.026414484345153
                ],
                [
                  -156.65123334044338,
                  71.33735065371687,
                  22.17358551565485
                ],
                [
                  -156.65071764160788,
                  71.33300296680802,
                  22.17358551565485
                ],
                [
                  -156.66424309766862,
                  71.33282061545135,
                  -15.026414484345153
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2326.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2326.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:11:18Z",
            "pc:count": 2289614,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97338.90678,
                "count": 2289614,
                "maximum": -97105.95178,
                "minimum": -97601.97178,
                "name": "X",
                "position": 0,
                "stddev": 134.6335933,
                "variance": 18126.20443
              },
              {
                "average": 2372653.739,
                "count": 2289614,
                "maximum": 2372905.327,
                "minimum": 2372431.847,
                "name": "Y",
                "position": 1,
                "stddev": 126.8139431,
                "variance": 16081.77616
              },
              {
                "average": 2.536501653,
                "count": 2289614,
                "maximum": 22.17358552,
                "minimum": -15.02641448,
                "name": "Z",
                "position": 2,
                "stddev": 1.421773608,
                "variance": 2.021440191
              },
              {
                "average": 17430.36977,
                "count": 2289614,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8610.790705,
                "variance": 74145716.56
              },
              {
                "average": 1.002899179,
                "count": 2289614,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05387953049,
                "variance": 0.002903003806
              },
              {
                "average": 1.005798794,
                "count": 2289614,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07616992819,
                "variance": 0.005801857961
              },
              {
                "average": 0.5010923239,
                "count": 2289614,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998916,
                "variance": 0.249998916
              },
              {
                "average": 0.0004668909257,
                "count": 2289614,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02160261888,
                "variance": 0.0004666731424
              },
              {
                "average": 3.835087486,
                "count": 2289614,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.530555038,
                "variance": 12.46481888
              },
              {
                "average": 1.630650675,
                "count": 2289614,
                "maximum": 16.32600021,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.718022611,
                "variance": 94.43996346
              },
              {
                "average": 0.5579909976,
                "count": 2289614,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4966257665,
                "variance": 0.2466371519
              },
              {
                "average": 404.3378644,
                "count": 2289614,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9549560764,
                "variance": 0.9119411078
              },
              {
                "average": 220414110.1,
                "count": 2289614,
                "maximum": 220415078.4,
                "minimum": 220413332.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.8670624,
                "variance": 292537.1792
              },
              {
                "average": 0.5579909976,
                "count": 2289614,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4966257665,
                "variance": 0.2466371519
              },
              {
                "average": 0,
                "count": 2289614,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2289614,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2289614,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2290914538,
                "count": 2289614,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4202483037,
                "variance": 0.1766086368
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97601.97178,
              2372431.847,
              -15.02641448,
              -97105.95178,
              2372905.327,
              22.17358552
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97601.97178163585,
                    2372431.8467012458,
                    -15.026414484345153
                  ],
                  [
                    -97601.97178163585,
                    2372905.326701246,
                    -15.026414484345153
                  ],
                  [
                    -97105.95178163586,
                    2372905.326701246,
                    22.17358551565485
                  ],
                  [
                    -97105.95178163586,
                    2372431.8467012458,
                    22.17358551565485
                  ],
                  [
                    -97601.97178163585,
                    2372431.8467012458,
                    -15.026414484345153
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:11:18+00:00",
            "end_time": "2018-09-08T03:42:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2380.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.35527022935625,
              71.35417934863293,
              0.97332662565195
            ],
            [
              -156.35538165687083,
              71.35523601098572,
              0.97332662565195
            ],
            [
              -156.34955529425304,
              71.35530547980976,
              1.39332662565195
            ],
            [
              -156.34944414190915,
              71.35424881367057,
              1.39332662565195
            ],
            [
              -156.35527022935625,
              71.35417934863293,
              0.97332662565195
            ]
          ]
        ]
      },
      "bbox": [
        -156.3553817,
        71.35417935,
        0.9733266257,
        -156.3494441,
        71.35530548,
        1.393326626
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:14Z",
        "pc:count": 143304,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86113.34656,
            "count": 143304,
            "maximum": -85992.28096,
            "minimum": -86205.70096,
            "name": "X",
            "position": 0,
            "stddev": 51.71895941,
            "variance": 2674.850763
          },
          {
            "average": 2374390.47,
            "count": 143304,
            "maximum": 2374441.721,
            "minimum": 2374326.681,
            "name": "Y",
            "position": 1,
            "stddev": 28.37800752,
            "variance": 805.3113111
          },
          {
            "average": 1.186178814,
            "count": 143304,
            "maximum": 1.393326626,
            "minimum": 0.9733266257,
            "name": "Z",
            "position": 2,
            "stddev": 0.04685973618,
            "variance": 0.002195834875
          },
          {
            "average": 19977.59804,
            "count": 143304,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13398.38591,
            "variance": 179516744.9
          },
          {
            "average": 1,
            "count": 143304,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 143304,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4859389829,
            "count": 143304,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998039926,
            "variance": 0.249804031
          },
          {
            "average": 0,
            "count": 143304,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 8.223161949,
            "count": 143304,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.518585402,
            "variance": 2.306101623
          },
          {
            "average": 5.298864471,
            "count": 143304,
            "maximum": 13.03199959,
            "minimum": -0.8759999871,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 3.903179613,
            "variance": 15.23481109
          },
          {
            "average": 0.4835036007,
            "count": 143304,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997295383,
            "variance": 0.2497296115
          },
          {
            "average": 419.605182,
            "count": 143304,
            "maximum": 420,
            "minimum": 419,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.4888132733,
            "variance": 0.2389384162
          },
          {
            "average": 220422612.9,
            "count": 143304,
            "maximum": 220422994,
            "minimum": 220422029.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 469.2394083,
            "variance": 220185.6223
          },
          {
            "average": 0.4835036007,
            "count": 143304,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997295383,
            "variance": 0.2497296115
          },
          {
            "average": 0,
            "count": 143304,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 143304,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 143304,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 143304,
            "maximum": 0,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0,
            "variance": 0
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86205.70096,
          2374326.681,
          0.9733266257,
          -85992.28096,
          2374441.721,
          1.393326626
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86205.70095804438,
                2374326.680839822,
                0.97332662565195
              ],
              [
                -86205.70095804438,
                2374441.720839822,
                0.97332662565195
              ],
              [
                -85992.28095804437,
                2374441.720839822,
                1.39332662565195
              ],
              [
                -85992.28095804437,
                2374326.680839822,
                1.39332662565195
              ],
              [
                -86205.70095804438,
                2374326.680839822,
                0.97332662565195
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:14+00:00",
        "end_time": "2018-09-08T06:07:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2380.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2380.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2380.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2380.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3553817,
            71.35417935,
            0.9733266257,
            -156.3494441,
            71.35530548,
            1.393326626
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.35527022935625,
                  71.35417934863293,
                  0.97332662565195
                ],
                [
                  -156.35538165687083,
                  71.35523601098572,
                  0.97332662565195
                ],
                [
                  -156.34955529425304,
                  71.35530547980976,
                  1.39332662565195
                ],
                [
                  -156.34944414190915,
                  71.35424881367057,
                  1.39332662565195
                ],
                [
                  -156.35527022935625,
                  71.35417934863293,
                  0.97332662565195
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2380.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2380.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:14Z",
            "pc:count": 143304,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86113.34656,
                "count": 143304,
                "maximum": -85992.28096,
                "minimum": -86205.70096,
                "name": "X",
                "position": 0,
                "stddev": 51.71895941,
                "variance": 2674.850763
              },
              {
                "average": 2374390.47,
                "count": 143304,
                "maximum": 2374441.721,
                "minimum": 2374326.681,
                "name": "Y",
                "position": 1,
                "stddev": 28.37800752,
                "variance": 805.3113111
              },
              {
                "average": 1.186178814,
                "count": 143304,
                "maximum": 1.393326626,
                "minimum": 0.9733266257,
                "name": "Z",
                "position": 2,
                "stddev": 0.04685973618,
                "variance": 0.002195834875
              },
              {
                "average": 19977.59804,
                "count": 143304,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13398.38591,
                "variance": 179516744.9
              },
              {
                "average": 1,
                "count": 143304,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 143304,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4859389829,
                "count": 143304,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998039926,
                "variance": 0.249804031
              },
              {
                "average": 0,
                "count": 143304,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 8.223161949,
                "count": 143304,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.518585402,
                "variance": 2.306101623
              },
              {
                "average": 5.298864471,
                "count": 143304,
                "maximum": 13.03199959,
                "minimum": -0.8759999871,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 3.903179613,
                "variance": 15.23481109
              },
              {
                "average": 0.4835036007,
                "count": 143304,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997295383,
                "variance": 0.2497296115
              },
              {
                "average": 419.605182,
                "count": 143304,
                "maximum": 420,
                "minimum": 419,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.4888132733,
                "variance": 0.2389384162
              },
              {
                "average": 220422612.9,
                "count": 143304,
                "maximum": 220422994,
                "minimum": 220422029.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 469.2394083,
                "variance": 220185.6223
              },
              {
                "average": 0.4835036007,
                "count": 143304,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997295383,
                "variance": 0.2497296115
              },
              {
                "average": 0,
                "count": 143304,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 143304,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 143304,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 143304,
                "maximum": 0,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0,
                "variance": 0
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86205.70096,
              2374326.681,
              0.9733266257,
              -85992.28096,
              2374441.721,
              1.393326626
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86205.70095804438,
                    2374326.680839822,
                    0.97332662565195
                  ],
                  [
                    -86205.70095804438,
                    2374441.720839822,
                    0.97332662565195
                  ],
                  [
                    -85992.28095804437,
                    2374441.720839822,
                    1.39332662565195
                  ],
                  [
                    -85992.28095804437,
                    2374326.680839822,
                    1.39332662565195
                  ],
                  [
                    -86205.70095804438,
                    2374326.680839822,
                    0.97332662565195
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:14+00:00",
            "end_time": "2018-09-08T06:07:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2381.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5682240408199,
              71.35680658393798,
              0.849631825127621
            ],
            [
              -156.56838742531139,
              71.35822720486328,
              0.849631825127621
            ],
            [
              -156.5600187485633,
              71.35833596317072,
              1.529631825127621
            ],
            [
              -156.55985589537704,
              71.35691533427445,
              1.529631825127621
            ],
            [
              -156.5682240408199,
              71.35680658393798,
              0.849631825127621
            ]
          ]
        ]
      },
      "bbox": [
        -156.5683874,
        71.35680658,
        0.8496318251,
        -156.5598559,
        71.35833596,
        1.529631825
      ],
      "properties": {
        "datetime": "2018-09-08T04:18:25Z",
        "pc:count": 210035,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93781.29737,
            "count": 210035,
            "maximum": -93678.74844,
            "minimum": -93985.28844,
            "name": "X",
            "position": 0,
            "stddev": 70.48226786,
            "variance": 4967.750083
          },
          {
            "average": 2374959.31,
            "count": 210035,
            "maximum": 2375055.914,
            "minimum": 2374901.234,
            "name": "Y",
            "position": 1,
            "stddev": 34.73479058,
            "variance": 1206.505677
          },
          {
            "average": 1.157179329,
            "count": 210035,
            "maximum": 1.529631825,
            "minimum": 0.8496318251,
            "name": "Z",
            "position": 2,
            "stddev": 0.08240128107,
            "variance": 0.006789971123
          },
          {
            "average": 15542.91796,
            "count": 210035,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10280.698,
            "variance": 105692751.3
          },
          {
            "average": 1,
            "count": 210035,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 210035,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4871330969,
            "count": 210035,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998356053,
            "variance": 0.2498356323
          },
          {
            "average": 0.0003618444545,
            "count": 210035,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01901881293,
            "variance": 0.0003617152453
          },
          {
            "average": 7.607870117,
            "count": 210035,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.42904859,
            "variance": 5.900277054
          },
          {
            "average": 5.495607809,
            "count": 210035,
            "maximum": 10.78800011,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 3.945879511,
            "variance": 15.56996512
          },
          {
            "average": 0.4748827576,
            "count": 210035,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993699144,
            "variance": 0.2493703114
          },
          {
            "average": 405.4791916,
            "count": 210035,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5537464657,
            "variance": 0.3066351482
          },
          {
            "average": 220414742.4,
            "count": 210035,
            "maximum": 220415505.5,
            "minimum": 220414011.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 399.7031688,
            "variance": 159762.6231
          },
          {
            "average": 0.4748827576,
            "count": 210035,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993699144,
            "variance": 0.2493703114
          },
          {
            "average": 0,
            "count": 210035,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 210035,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 210035,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02853333968,
            "count": 210035,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1664912015,
            "variance": 0.02771932018
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93985.28844,
          2374901.234,
          0.8496318251,
          -93678.74844,
          2375055.914,
          1.529631825
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93985.2884423023,
                2374901.2340847314,
                0.849631825127621
              ],
              [
                -93985.2884423023,
                2375055.914084731,
                0.849631825127621
              ],
              [
                -93678.7484423023,
                2375055.914084731,
                1.529631825127621
              ],
              [
                -93678.7484423023,
                2374901.2340847314,
                1.529631825127621
              ],
              [
                -93985.2884423023,
                2374901.2340847314,
                0.849631825127621
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:18:25+00:00",
        "end_time": "2018-09-08T03:53:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2381.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2381.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2381.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2381.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5683874,
            71.35680658,
            0.8496318251,
            -156.5598559,
            71.35833596,
            1.529631825
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5682240408199,
                  71.35680658393798,
                  0.849631825127621
                ],
                [
                  -156.56838742531139,
                  71.35822720486328,
                  0.849631825127621
                ],
                [
                  -156.5600187485633,
                  71.35833596317072,
                  1.529631825127621
                ],
                [
                  -156.55985589537704,
                  71.35691533427445,
                  1.529631825127621
                ],
                [
                  -156.5682240408199,
                  71.35680658393798,
                  0.849631825127621
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2381.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2381.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:18:25Z",
            "pc:count": 210035,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93781.29737,
                "count": 210035,
                "maximum": -93678.74844,
                "minimum": -93985.28844,
                "name": "X",
                "position": 0,
                "stddev": 70.48226786,
                "variance": 4967.750083
              },
              {
                "average": 2374959.31,
                "count": 210035,
                "maximum": 2375055.914,
                "minimum": 2374901.234,
                "name": "Y",
                "position": 1,
                "stddev": 34.73479058,
                "variance": 1206.505677
              },
              {
                "average": 1.157179329,
                "count": 210035,
                "maximum": 1.529631825,
                "minimum": 0.8496318251,
                "name": "Z",
                "position": 2,
                "stddev": 0.08240128107,
                "variance": 0.006789971123
              },
              {
                "average": 15542.91796,
                "count": 210035,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10280.698,
                "variance": 105692751.3
              },
              {
                "average": 1,
                "count": 210035,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 210035,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4871330969,
                "count": 210035,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998356053,
                "variance": 0.2498356323
              },
              {
                "average": 0.0003618444545,
                "count": 210035,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01901881293,
                "variance": 0.0003617152453
              },
              {
                "average": 7.607870117,
                "count": 210035,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.42904859,
                "variance": 5.900277054
              },
              {
                "average": 5.495607809,
                "count": 210035,
                "maximum": 10.78800011,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 3.945879511,
                "variance": 15.56996512
              },
              {
                "average": 0.4748827576,
                "count": 210035,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993699144,
                "variance": 0.2493703114
              },
              {
                "average": 405.4791916,
                "count": 210035,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5537464657,
                "variance": 0.3066351482
              },
              {
                "average": 220414742.4,
                "count": 210035,
                "maximum": 220415505.5,
                "minimum": 220414011.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 399.7031688,
                "variance": 159762.6231
              },
              {
                "average": 0.4748827576,
                "count": 210035,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993699144,
                "variance": 0.2493703114
              },
              {
                "average": 0,
                "count": 210035,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 210035,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 210035,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02853333968,
                "count": 210035,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1664912015,
                "variance": 0.02771932018
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93985.28844,
              2374901.234,
              0.8496318251,
              -93678.74844,
              2375055.914,
              1.529631825
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93985.2884423023,
                    2374901.2340847314,
                    0.849631825127621
                  ],
                  [
                    -93985.2884423023,
                    2375055.914084731,
                    0.849631825127621
                  ],
                  [
                    -93678.7484423023,
                    2375055.914084731,
                    1.529631825127621
                  ],
                  [
                    -93678.7484423023,
                    2374901.2340847314,
                    1.529631825127621
                  ],
                  [
                    -93985.2884423023,
                    2374901.2340847314,
                    0.849631825127621
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:18:25+00:00",
            "end_time": "2018-09-08T03:53:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2365.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58630091302376,
              71.3486483344659,
              -17.516078569639628
            ],
            [
              -156.58680441700594,
              71.35299646774538,
              -17.516078569639628
            ],
            [
              -156.57326503527452,
              71.3531735462619,
              15.263921430360373
            ],
            [
              -156.57276416135142,
              71.34882537327803,
              15.263921430360373
            ],
            [
              -156.58630091302376,
              71.3486483344659,
              -17.516078569639628
            ]
          ]
        ]
      },
      "bbox": [
        -156.5868044,
        71.34864833,
        -17.51607857,
        -156.5727642,
        71.35317355,
        15.26392143
      ],
      "properties": {
        "datetime": "2018-09-08T04:30:53Z",
        "pc:count": 2349240,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94435.49854,
            "count": 2349240,
            "maximum": -94184.98603,
            "minimum": -94681.04603,
            "name": "X",
            "position": 0,
            "stddev": 133.2928638,
            "variance": 17766.98754
          },
          {
            "average": 2374254.163,
            "count": 2349240,
            "maximum": 2374513.388,
            "minimum": 2374039.928,
            "name": "Y",
            "position": 1,
            "stddev": 128.8066477,
            "variance": 16591.15249
          },
          {
            "average": 1.577217777,
            "count": 2349240,
            "maximum": 15.26392143,
            "minimum": -17.51607857,
            "name": "Z",
            "position": 2,
            "stddev": 0.7462794608,
            "variance": 0.5569330337
          },
          {
            "average": 16143.7341,
            "count": 2349240,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9144.746233,
            "variance": 83626383.67
          },
          {
            "average": 1.000011493,
            "count": 2349240,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003390125575,
            "variance": 1.149295141e-05
          },
          {
            "average": 1.000022986,
            "count": 2349240,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004794334015,
            "variance": 2.298563865e-05
          },
          {
            "average": 0.4952576152,
            "count": 2349240,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999776157,
            "variance": 0.2499776162
          },
          {
            "average": 0.0004631285011,
            "count": 2349240,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0215154412,
            "variance": 0.0004629142102
          },
          {
            "average": 5.206808585,
            "count": 2349240,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.721069142,
            "variance": 13.84635556
          },
          {
            "average": 3.035558613,
            "count": 2349240,
            "maximum": 16.27799988,
            "minimum": -15.91800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.411183428,
            "variance": 70.74800666
          },
          {
            "average": 0.4985058998,
            "count": 2349240,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999978741,
            "variance": 0.2499978741
          },
          {
            "average": 405.7421541,
            "count": 2349240,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7476554201,
            "variance": 0.5589886272
          },
          {
            "average": 220414880.8,
            "count": 2349240,
            "maximum": 220416253.7,
            "minimum": 220413994.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 451.9710127,
            "variance": 204277.7963
          },
          {
            "average": 0.4985058998,
            "count": 2349240,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999978741,
            "variance": 0.2499978741
          },
          {
            "average": 0,
            "count": 2349240,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2349240,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2349240,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1189414449,
            "count": 2349240,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.323719666,
            "variance": 0.1047944222
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94681.04603,
          2374039.928,
          -17.51607857,
          -94184.98603,
          2374513.388,
          15.26392143
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94681.04603494395,
                2374039.928481692,
                -17.516078569639628
              ],
              [
                -94681.04603494395,
                2374513.388481692,
                -17.516078569639628
              ],
              [
                -94184.98603494396,
                2374513.388481692,
                15.263921430360373
              ],
              [
                -94184.98603494396,
                2374039.928481692,
                15.263921430360373
              ],
              [
                -94681.04603494395,
                2374039.928481692,
                -17.516078569639628
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:30:53+00:00",
        "end_time": "2018-09-08T03:53:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2365.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2365.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2365.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2365.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5868044,
            71.34864833,
            -17.51607857,
            -156.5727642,
            71.35317355,
            15.26392143
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58630091302376,
                  71.3486483344659,
                  -17.516078569639628
                ],
                [
                  -156.58680441700594,
                  71.35299646774538,
                  -17.516078569639628
                ],
                [
                  -156.57326503527452,
                  71.3531735462619,
                  15.263921430360373
                ],
                [
                  -156.57276416135142,
                  71.34882537327803,
                  15.263921430360373
                ],
                [
                  -156.58630091302376,
                  71.3486483344659,
                  -17.516078569639628
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2365.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2365.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:30:53Z",
            "pc:count": 2349240,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94435.49854,
                "count": 2349240,
                "maximum": -94184.98603,
                "minimum": -94681.04603,
                "name": "X",
                "position": 0,
                "stddev": 133.2928638,
                "variance": 17766.98754
              },
              {
                "average": 2374254.163,
                "count": 2349240,
                "maximum": 2374513.388,
                "minimum": 2374039.928,
                "name": "Y",
                "position": 1,
                "stddev": 128.8066477,
                "variance": 16591.15249
              },
              {
                "average": 1.577217777,
                "count": 2349240,
                "maximum": 15.26392143,
                "minimum": -17.51607857,
                "name": "Z",
                "position": 2,
                "stddev": 0.7462794608,
                "variance": 0.5569330337
              },
              {
                "average": 16143.7341,
                "count": 2349240,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9144.746233,
                "variance": 83626383.67
              },
              {
                "average": 1.000011493,
                "count": 2349240,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003390125575,
                "variance": 1.149295141e-05
              },
              {
                "average": 1.000022986,
                "count": 2349240,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004794334015,
                "variance": 2.298563865e-05
              },
              {
                "average": 0.4952576152,
                "count": 2349240,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999776157,
                "variance": 0.2499776162
              },
              {
                "average": 0.0004631285011,
                "count": 2349240,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0215154412,
                "variance": 0.0004629142102
              },
              {
                "average": 5.206808585,
                "count": 2349240,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.721069142,
                "variance": 13.84635556
              },
              {
                "average": 3.035558613,
                "count": 2349240,
                "maximum": 16.27799988,
                "minimum": -15.91800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.411183428,
                "variance": 70.74800666
              },
              {
                "average": 0.4985058998,
                "count": 2349240,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999978741,
                "variance": 0.2499978741
              },
              {
                "average": 405.7421541,
                "count": 2349240,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7476554201,
                "variance": 0.5589886272
              },
              {
                "average": 220414880.8,
                "count": 2349240,
                "maximum": 220416253.7,
                "minimum": 220413994.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 451.9710127,
                "variance": 204277.7963
              },
              {
                "average": 0.4985058998,
                "count": 2349240,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999978741,
                "variance": 0.2499978741
              },
              {
                "average": 0,
                "count": 2349240,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2349240,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2349240,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1189414449,
                "count": 2349240,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.323719666,
                "variance": 0.1047944222
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94681.04603,
              2374039.928,
              -17.51607857,
              -94184.98603,
              2374513.388,
              15.26392143
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94681.04603494395,
                    2374039.928481692,
                    -17.516078569639628
                  ],
                  [
                    -94681.04603494395,
                    2374513.388481692,
                    -17.516078569639628
                  ],
                  [
                    -94184.98603494396,
                    2374513.388481692,
                    15.263921430360373
                  ],
                  [
                    -94184.98603494396,
                    2374039.928481692,
                    15.263921430360373
                  ],
                  [
                    -94681.04603494395,
                    2374039.928481692,
                    -17.516078569639628
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:30:53+00:00",
            "end_time": "2018-09-08T03:53:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2294.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5756125334921,
              71.31987563293987,
              0.963687454654023
            ],
            [
              -156.57611168364122,
              71.32420880140245,
              0.963687454654023
            ],
            [
              -156.56258963924193,
              71.3243851124254,
              8.263687454654022
            ],
            [
              -156.5620931039228,
              71.3200519046321,
              8.263687454654022
            ],
            [
              -156.5756125334921,
              71.31987563293987,
              0.963687454654023
            ]
          ]
        ]
      },
      "bbox": [
        -156.5761117,
        71.31987563,
        0.9636874547,
        -156.5620931,
        71.32438511,
        8.263687455
      ],
      "properties": {
        "datetime": "2018-09-11T17:29:26Z",
        "pc:count": 2982334,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94164.15299,
            "count": 2982334,
            "maximum": -93915.29334,
            "minimum": -94411.35334,
            "name": "X",
            "position": 0,
            "stddev": 127.6341559,
            "variance": 16290.47775
          },
          {
            "average": 2371133.799,
            "count": 2982334,
            "maximum": 2371368.014,
            "minimum": 2370896.094,
            "name": "Y",
            "position": 1,
            "stddev": 126.2316024,
            "variance": 15934.41744
          },
          {
            "average": 3.409839874,
            "count": 2982334,
            "maximum": 8.263687455,
            "minimum": 0.9636874547,
            "name": "Z",
            "position": 2,
            "stddev": 0.7711231411,
            "variance": 0.5946308987
          },
          {
            "average": 38183.43539,
            "count": 2982334,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14210.1635,
            "variance": 201928746.8
          },
          {
            "average": 1,
            "count": 2982334,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2982334,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995382811,
            "count": 2982334,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998706,
            "variance": 0.2499998706
          },
          {
            "average": 0.0004861963818,
            "count": 2982334,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02204450403,
            "variance": 0.0004859601578
          },
          {
            "average": 1.82768999,
            "count": 2982334,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.000296248,
            "variance": 4.001185078
          },
          {
            "average": 1.507998556,
            "count": 2982334,
            "maximum": 20.44799995,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.48135484,
            "variance": 109.8587993
          },
          {
            "average": 0.5101933586,
            "count": 2982334,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998961685,
            "variance": 0.2498961792
          },
          {
            "average": 415.5734693,
            "count": 2982334,
            "maximum": 452,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 9.784159504,
            "variance": 95.7297772
          },
          {
            "average": 220439205.5,
            "count": 2982334,
            "maximum": 220722166,
            "minimum": 220417814.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 75702.99351,
            "variance": 5730943227
          },
          {
            "average": 0.5101933586,
            "count": 2982334,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998961685,
            "variance": 0.2498961792
          },
          {
            "average": 0,
            "count": 2982334,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2982334,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2982334,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2322164452,
            "count": 2982334,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4222464062,
            "variance": 0.1782920276
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94411.35334,
          2370896.094,
          0.9636874547,
          -93915.29334,
          2371368.014,
          8.263687455
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94411.35334179556,
                2370896.0938606123,
                0.963687454654023
              ],
              [
                -94411.35334179556,
                2371368.013860612,
                0.963687454654023
              ],
              [
                -93915.29334179556,
                2371368.013860612,
                8.263687454654022
              ],
              [
                -93915.29334179556,
                2370896.0938606123,
                8.263687454654022
              ],
              [
                -94411.35334179556,
                2370896.0938606123,
                0.963687454654023
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:29:26+00:00",
        "end_time": "2018-09-08T04:56:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2294.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2294.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2294.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2294.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5761117,
            71.31987563,
            0.9636874547,
            -156.5620931,
            71.32438511,
            8.263687455
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5756125334921,
                  71.31987563293987,
                  0.963687454654023
                ],
                [
                  -156.57611168364122,
                  71.32420880140245,
                  0.963687454654023
                ],
                [
                  -156.56258963924193,
                  71.3243851124254,
                  8.263687454654022
                ],
                [
                  -156.5620931039228,
                  71.3200519046321,
                  8.263687454654022
                ],
                [
                  -156.5756125334921,
                  71.31987563293987,
                  0.963687454654023
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2294.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2294.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:29:26Z",
            "pc:count": 2982334,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94164.15299,
                "count": 2982334,
                "maximum": -93915.29334,
                "minimum": -94411.35334,
                "name": "X",
                "position": 0,
                "stddev": 127.6341559,
                "variance": 16290.47775
              },
              {
                "average": 2371133.799,
                "count": 2982334,
                "maximum": 2371368.014,
                "minimum": 2370896.094,
                "name": "Y",
                "position": 1,
                "stddev": 126.2316024,
                "variance": 15934.41744
              },
              {
                "average": 3.409839874,
                "count": 2982334,
                "maximum": 8.263687455,
                "minimum": 0.9636874547,
                "name": "Z",
                "position": 2,
                "stddev": 0.7711231411,
                "variance": 0.5946308987
              },
              {
                "average": 38183.43539,
                "count": 2982334,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14210.1635,
                "variance": 201928746.8
              },
              {
                "average": 1,
                "count": 2982334,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2982334,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995382811,
                "count": 2982334,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998706,
                "variance": 0.2499998706
              },
              {
                "average": 0.0004861963818,
                "count": 2982334,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02204450403,
                "variance": 0.0004859601578
              },
              {
                "average": 1.82768999,
                "count": 2982334,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.000296248,
                "variance": 4.001185078
              },
              {
                "average": 1.507998556,
                "count": 2982334,
                "maximum": 20.44799995,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.48135484,
                "variance": 109.8587993
              },
              {
                "average": 0.5101933586,
                "count": 2982334,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998961685,
                "variance": 0.2498961792
              },
              {
                "average": 415.5734693,
                "count": 2982334,
                "maximum": 452,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 9.784159504,
                "variance": 95.7297772
              },
              {
                "average": 220439205.5,
                "count": 2982334,
                "maximum": 220722166,
                "minimum": 220417814.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 75702.99351,
                "variance": 5730943227
              },
              {
                "average": 0.5101933586,
                "count": 2982334,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998961685,
                "variance": 0.2498961792
              },
              {
                "average": 0,
                "count": 2982334,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2982334,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2982334,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2322164452,
                "count": 2982334,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4222464062,
                "variance": 0.1782920276
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94411.35334,
              2370896.094,
              0.9636874547,
              -93915.29334,
              2371368.014,
              8.263687455
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94411.35334179556,
                    2370896.0938606123,
                    0.963687454654023
                  ],
                  [
                    -94411.35334179556,
                    2371368.013860612,
                    0.963687454654023
                  ],
                  [
                    -93915.29334179556,
                    2371368.013860612,
                    8.263687454654022
                  ],
                  [
                    -93915.29334179556,
                    2370896.0938606123,
                    8.263687454654022
                  ],
                  [
                    -94411.35334179556,
                    2370896.0938606123,
                    0.963687454654023
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:29:26+00:00",
            "end_time": "2018-09-08T04:56:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2382.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56008992773985,
              71.35664919659264,
              0.812494886266036
            ],
            [
              -156.56050989663365,
              71.36031210329307,
              0.812494886266036
            ],
            [
              -156.54704068556478,
              71.36048642097293,
              1.572494886266036
            ],
            [
              -156.5466229215149,
              71.3568234813314,
              1.572494886266036
            ],
            [
              -156.56008992773985,
              71.35664919659264,
              0.812494886266036
            ]
          ]
        ]
      },
      "bbox": [
        -156.5605099,
        71.3566492,
        0.8124948863,
        -156.5466229,
        71.36048642,
        1.572494886
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:15Z",
        "pc:count": 1190783,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93418.64509,
            "count": 1190783,
            "maximum": -93195.10464,
            "minimum": -93688.42464,
            "name": "X",
            "position": 0,
            "stddev": 134.3565797,
            "variance": 18051.6905
          },
          {
            "average": 2375029.314,
            "count": 1190783,
            "maximum": 2375271.45,
            "minimum": 2374872.63,
            "name": "Y",
            "position": 1,
            "stddev": 90.51353376,
            "variance": 8192.699794
          },
          {
            "average": 1.181994123,
            "count": 1190783,
            "maximum": 1.572494886,
            "minimum": 0.8124948863,
            "name": "Z",
            "position": 2,
            "stddev": 0.07535761796,
            "variance": 0.005678770585
          },
          {
            "average": 14894.0188,
            "count": 1190783,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11325.38092,
            "variance": 128264252.9
          },
          {
            "average": 1,
            "count": 1190783,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1190783,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4989087012,
            "count": 1190783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999019,
            "variance": 0.249999019
          },
          {
            "average": 0.0005987656861,
            "count": 1190783,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0244623725,
            "variance": 0.0005984076683
          },
          {
            "average": 7.186418516,
            "count": 1190783,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.904155035,
            "variance": 8.434116465
          },
          {
            "average": 0.7446239173,
            "count": 1190783,
            "maximum": 16.24799919,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.144985874,
            "variance": 66.34079488
          },
          {
            "average": 0.4887960275,
            "count": 1190783,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998746651,
            "variance": 0.2498746808
          },
          {
            "average": 405.9381491,
            "count": 1190783,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7096547844,
            "variance": 0.503609913
          },
          {
            "average": 220415006.1,
            "count": 1190783,
            "maximum": 220416275,
            "minimum": 220414362.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 424.4732877,
            "variance": 180177.572
          },
          {
            "average": 0.4887960275,
            "count": 1190783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998746651,
            "variance": 0.2498746808
          },
          {
            "average": 0,
            "count": 1190783,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1190783,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1190783,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0624429472,
            "count": 1190783,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2419584153,
            "variance": 0.05854387471
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93688.42464,
          2374872.63,
          0.8124948863,
          -93195.10464,
          2375271.45,
          1.572494886
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93688.42464481299,
                2374872.629662767,
                0.812494886266036
              ],
              [
                -93688.42464481299,
                2375271.4496627674,
                0.812494886266036
              ],
              [
                -93195.10464481298,
                2375271.4496627674,
                1.572494886266036
              ],
              [
                -93195.10464481298,
                2374872.629662767,
                1.572494886266036
              ],
              [
                -93688.42464481299,
                2374872.629662767,
                0.812494886266036
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:15+00:00",
        "end_time": "2018-09-08T03:59:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2382.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2382.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2382.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2382.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5605099,
            71.3566492,
            0.8124948863,
            -156.5466229,
            71.36048642,
            1.572494886
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56008992773985,
                  71.35664919659264,
                  0.812494886266036
                ],
                [
                  -156.56050989663365,
                  71.36031210329307,
                  0.812494886266036
                ],
                [
                  -156.54704068556478,
                  71.36048642097293,
                  1.572494886266036
                ],
                [
                  -156.5466229215149,
                  71.3568234813314,
                  1.572494886266036
                ],
                [
                  -156.56008992773985,
                  71.35664919659264,
                  0.812494886266036
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2382.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2382.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:15Z",
            "pc:count": 1190783,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93418.64509,
                "count": 1190783,
                "maximum": -93195.10464,
                "minimum": -93688.42464,
                "name": "X",
                "position": 0,
                "stddev": 134.3565797,
                "variance": 18051.6905
              },
              {
                "average": 2375029.314,
                "count": 1190783,
                "maximum": 2375271.45,
                "minimum": 2374872.63,
                "name": "Y",
                "position": 1,
                "stddev": 90.51353376,
                "variance": 8192.699794
              },
              {
                "average": 1.181994123,
                "count": 1190783,
                "maximum": 1.572494886,
                "minimum": 0.8124948863,
                "name": "Z",
                "position": 2,
                "stddev": 0.07535761796,
                "variance": 0.005678770585
              },
              {
                "average": 14894.0188,
                "count": 1190783,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11325.38092,
                "variance": 128264252.9
              },
              {
                "average": 1,
                "count": 1190783,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1190783,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4989087012,
                "count": 1190783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999019,
                "variance": 0.249999019
              },
              {
                "average": 0.0005987656861,
                "count": 1190783,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0244623725,
                "variance": 0.0005984076683
              },
              {
                "average": 7.186418516,
                "count": 1190783,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.904155035,
                "variance": 8.434116465
              },
              {
                "average": 0.7446239173,
                "count": 1190783,
                "maximum": 16.24799919,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.144985874,
                "variance": 66.34079488
              },
              {
                "average": 0.4887960275,
                "count": 1190783,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998746651,
                "variance": 0.2498746808
              },
              {
                "average": 405.9381491,
                "count": 1190783,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7096547844,
                "variance": 0.503609913
              },
              {
                "average": 220415006.1,
                "count": 1190783,
                "maximum": 220416275,
                "minimum": 220414362.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 424.4732877,
                "variance": 180177.572
              },
              {
                "average": 0.4887960275,
                "count": 1190783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998746651,
                "variance": 0.2498746808
              },
              {
                "average": 0,
                "count": 1190783,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1190783,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1190783,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0624429472,
                "count": 1190783,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2419584153,
                "variance": 0.05854387471
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93688.42464,
              2374872.63,
              0.8124948863,
              -93195.10464,
              2375271.45,
              1.572494886
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93688.42464481299,
                    2374872.629662767,
                    0.812494886266036
                  ],
                  [
                    -93688.42464481299,
                    2375271.4496627674,
                    0.812494886266036
                  ],
                  [
                    -93195.10464481298,
                    2375271.4496627674,
                    1.572494886266036
                  ],
                  [
                    -93195.10464481298,
                    2374872.629662767,
                    1.572494886266036
                  ],
                  [
                    -93688.42464481299,
                    2374872.629662767,
                    0.812494886266036
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:15+00:00",
            "end_time": "2018-09-08T03:59:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2272.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6653701730335,
              71.31643345311706,
              2.127054272712007
            ],
            [
              -156.66588842455002,
              71.32078134665235,
              2.127054272712007
            ],
            [
              -156.65237243998237,
              71.32096376682078,
              13.787054272712007
            ],
            [
              -156.65185681038423,
              71.31661583246179,
              13.787054272712007
            ],
            [
              -156.6653701730335,
              71.31643345311706,
              2.127054272712007
            ]
          ]
        ]
      },
      "bbox": [
        -156.6658884,
        71.31643345,
        2.127054273,
        -156.6518568,
        71.32096377,
        13.78705427
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:32Z",
        "pc:count": 3064414,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97466.83158,
            "count": 3064414,
            "maximum": -97218.85274,
            "minimum": -97714.79274,
            "name": "X",
            "position": 0,
            "stddev": 135.476404,
            "variance": 18353.85605
          },
          {
            "average": 2370885.285,
            "count": 3064414,
            "maximum": 2371125.168,
            "minimum": 2370651.608,
            "name": "Y",
            "position": 1,
            "stddev": 128.7722814,
            "variance": 16582.30046
          },
          {
            "average": 3.703966113,
            "count": 3064414,
            "maximum": 13.78705427,
            "minimum": 2.127054273,
            "name": "Z",
            "position": 2,
            "stddev": 0.6392252018,
            "variance": 0.4086088586
          },
          {
            "average": 43314.22209,
            "count": 3064414,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10771.57216,
            "variance": 116026766.7
          },
          {
            "average": 1.003475053,
            "count": 3064414,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05964025404,
            "variance": 0.003556959902
          },
          {
            "average": 1.006957937,
            "count": 3064414,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0848102479,
            "variance": 0.007192778148
          },
          {
            "average": 0.5004219404,
            "count": 3064414,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999035,
            "variance": 0.2499999035
          },
          {
            "average": 0.0004274879308,
            "count": 3064414,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02067136484,
            "variance": 0.0004273053243
          },
          {
            "average": 1.346551412,
            "count": 3064414,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5081916148,
            "variance": 0.2582587173
          },
          {
            "average": -0.07337271747,
            "count": 3064414,
            "maximum": 16.35000038,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5131977,
            "variance": 110.5273259
          },
          {
            "average": 0.4873284093,
            "count": 3064414,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998394866,
            "variance": 0.2498395123
          },
          {
            "average": 407.8778775,
            "count": 3064414,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.93355347,
            "variance": 0.8715220814
          },
          {
            "average": 220416104,
            "count": 3064414,
            "maximum": 220417312.3,
            "minimum": 220415048.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.4220416,
            "variance": 284539.0744
          },
          {
            "average": 0.4873284093,
            "count": 3064414,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998394866,
            "variance": 0.2498395123
          },
          {
            "average": 0,
            "count": 3064414,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3064414,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3064414,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2335441621,
            "count": 3064414,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4230855054,
            "variance": 0.1790013449
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97714.79274,
          2370651.608,
          2.127054273,
          -97218.85274,
          2371125.168,
          13.78705427
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97714.79273747877,
                2370651.6076527056,
                2.127054272712007
              ],
              [
                -97714.79273747877,
                2371125.167652705,
                2.127054272712007
              ],
              [
                -97218.85273747877,
                2371125.167652705,
                13.787054272712007
              ],
              [
                -97218.85273747877,
                2370651.6076527056,
                13.787054272712007
              ],
              [
                -97714.79273747877,
                2370651.6076527056,
                2.127054272712007
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:32+00:00",
        "end_time": "2018-09-08T04:10:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2272.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2272.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2272.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2272.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6658884,
            71.31643345,
            2.127054273,
            -156.6518568,
            71.32096377,
            13.78705427
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6653701730335,
                  71.31643345311706,
                  2.127054272712007
                ],
                [
                  -156.66588842455002,
                  71.32078134665235,
                  2.127054272712007
                ],
                [
                  -156.65237243998237,
                  71.32096376682078,
                  13.787054272712007
                ],
                [
                  -156.65185681038423,
                  71.31661583246179,
                  13.787054272712007
                ],
                [
                  -156.6653701730335,
                  71.31643345311706,
                  2.127054272712007
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2272.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2272.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:32Z",
            "pc:count": 3064414,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97466.83158,
                "count": 3064414,
                "maximum": -97218.85274,
                "minimum": -97714.79274,
                "name": "X",
                "position": 0,
                "stddev": 135.476404,
                "variance": 18353.85605
              },
              {
                "average": 2370885.285,
                "count": 3064414,
                "maximum": 2371125.168,
                "minimum": 2370651.608,
                "name": "Y",
                "position": 1,
                "stddev": 128.7722814,
                "variance": 16582.30046
              },
              {
                "average": 3.703966113,
                "count": 3064414,
                "maximum": 13.78705427,
                "minimum": 2.127054273,
                "name": "Z",
                "position": 2,
                "stddev": 0.6392252018,
                "variance": 0.4086088586
              },
              {
                "average": 43314.22209,
                "count": 3064414,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10771.57216,
                "variance": 116026766.7
              },
              {
                "average": 1.003475053,
                "count": 3064414,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05964025404,
                "variance": 0.003556959902
              },
              {
                "average": 1.006957937,
                "count": 3064414,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0848102479,
                "variance": 0.007192778148
              },
              {
                "average": 0.5004219404,
                "count": 3064414,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999035,
                "variance": 0.2499999035
              },
              {
                "average": 0.0004274879308,
                "count": 3064414,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02067136484,
                "variance": 0.0004273053243
              },
              {
                "average": 1.346551412,
                "count": 3064414,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5081916148,
                "variance": 0.2582587173
              },
              {
                "average": -0.07337271747,
                "count": 3064414,
                "maximum": 16.35000038,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5131977,
                "variance": 110.5273259
              },
              {
                "average": 0.4873284093,
                "count": 3064414,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998394866,
                "variance": 0.2498395123
              },
              {
                "average": 407.8778775,
                "count": 3064414,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.93355347,
                "variance": 0.8715220814
              },
              {
                "average": 220416104,
                "count": 3064414,
                "maximum": 220417312.3,
                "minimum": 220415048.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.4220416,
                "variance": 284539.0744
              },
              {
                "average": 0.4873284093,
                "count": 3064414,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998394866,
                "variance": 0.2498395123
              },
              {
                "average": 0,
                "count": 3064414,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3064414,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3064414,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2335441621,
                "count": 3064414,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4230855054,
                "variance": 0.1790013449
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97714.79274,
              2370651.608,
              2.127054273,
              -97218.85274,
              2371125.168,
              13.78705427
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97714.79273747877,
                    2370651.6076527056,
                    2.127054272712007
                  ],
                  [
                    -97714.79273747877,
                    2371125.167652705,
                    2.127054272712007
                  ],
                  [
                    -97218.85273747877,
                    2371125.167652705,
                    13.787054272712007
                  ],
                  [
                    -97218.85273747877,
                    2370651.6076527056,
                    13.787054272712007
                  ],
                  [
                    -97714.79273747877,
                    2370651.6076527056,
                    2.127054272712007
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:32+00:00",
            "end_time": "2018-09-08T04:10:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2207.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58988628419095,
              71.29948755859044,
              0.947976121587882
            ],
            [
              -156.59038963389196,
              71.30383643406194,
              0.947976121587882
            ],
            [
              -156.57688272924415,
              71.30401366466103,
              4.447976121587882
            ],
            [
              -156.57638199884445,
              71.29966474955705,
              4.447976121587882
            ],
            [
              -156.58988628419095,
              71.29948755859044,
              0.947976121587882
            ]
          ]
        ]
      },
      "bbox": [
        -156.5903896,
        71.29948756,
        0.9479761216,
        -156.576382,
        71.30401366,
        4.447976122
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:21Z",
        "pc:count": 3011693,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94776.57145,
            "count": 3011693,
            "maximum": -94524.85825,
            "minimum": -95020.81825,
            "name": "X",
            "position": 0,
            "stddev": 138.0795179,
            "variance": 19065.95325
          },
          {
            "average": 2368926.752,
            "count": 3011693,
            "maximum": 2369172.873,
            "minimum": 2368699.173,
            "name": "Y",
            "position": 1,
            "stddev": 134.3586062,
            "variance": 18052.23507
          },
          {
            "average": 2.864097831,
            "count": 3011693,
            "maximum": 4.447976122,
            "minimum": 0.9479761216,
            "name": "Z",
            "position": 2,
            "stddev": 0.8657789576,
            "variance": 0.7495732033
          },
          {
            "average": 43647.72572,
            "count": 3011693,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12743.18214,
            "variance": 162388691.1
          },
          {
            "average": 1,
            "count": 3011693,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3011693,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5014435402,
            "count": 3011693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999979992,
            "variance": 0.2499979992
          },
          {
            "average": 0.0004900897933,
            "count": 3011693,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02213254997,
            "variance": 0.000489849768
          },
          {
            "average": 1.675808922,
            "count": 3011693,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.863716542,
            "variance": 3.47343935
          },
          {
            "average": 0.7588002441,
            "count": 3011693,
            "maximum": 20.44199944,
            "minimum": -19.48800087,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51031653,
            "variance": 110.4667536
          },
          {
            "average": 0.5052570099,
            "count": 3011693,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999724461,
            "variance": 0.2499724468
          },
          {
            "average": 426.0905653,
            "count": 3011693,
            "maximum": 456,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.41791589,
            "variance": 269.547962
          },
          {
            "average": 220494695.5,
            "count": 3011693,
            "maximum": 220723001.9,
            "minimum": 220420016.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 129646.9548,
            "variance": 16808332880.0
          },
          {
            "average": 0.5052570099,
            "count": 3011693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999724461,
            "variance": 0.2499724468
          },
          {
            "average": 0,
            "count": 3011693,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3011693,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3011693,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2018668569,
            "count": 3011693,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4013934261,
            "variance": 0.1611166825
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95020.81825,
          2368699.173,
          0.9479761216,
          -94524.85825,
          2369172.873,
          4.447976122
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95020.81825386749,
                2368699.1732460237,
                0.947976121587882
              ],
              [
                -95020.81825386749,
                2369172.873246024,
                0.947976121587882
              ],
              [
                -94524.8582538675,
                2369172.873246024,
                4.447976121587882
              ],
              [
                -94524.8582538675,
                2368699.1732460237,
                4.447976121587882
              ],
              [
                -95020.81825386749,
                2368699.1732460237,
                0.947976121587882
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:21+00:00",
        "end_time": "2018-09-08T05:33:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2207.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2207.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2207.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2207.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5903896,
            71.29948756,
            0.9479761216,
            -156.576382,
            71.30401366,
            4.447976122
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58988628419095,
                  71.29948755859044,
                  0.947976121587882
                ],
                [
                  -156.59038963389196,
                  71.30383643406194,
                  0.947976121587882
                ],
                [
                  -156.57688272924415,
                  71.30401366466103,
                  4.447976121587882
                ],
                [
                  -156.57638199884445,
                  71.29966474955705,
                  4.447976121587882
                ],
                [
                  -156.58988628419095,
                  71.29948755859044,
                  0.947976121587882
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2207.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2207.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:21Z",
            "pc:count": 3011693,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94776.57145,
                "count": 3011693,
                "maximum": -94524.85825,
                "minimum": -95020.81825,
                "name": "X",
                "position": 0,
                "stddev": 138.0795179,
                "variance": 19065.95325
              },
              {
                "average": 2368926.752,
                "count": 3011693,
                "maximum": 2369172.873,
                "minimum": 2368699.173,
                "name": "Y",
                "position": 1,
                "stddev": 134.3586062,
                "variance": 18052.23507
              },
              {
                "average": 2.864097831,
                "count": 3011693,
                "maximum": 4.447976122,
                "minimum": 0.9479761216,
                "name": "Z",
                "position": 2,
                "stddev": 0.8657789576,
                "variance": 0.7495732033
              },
              {
                "average": 43647.72572,
                "count": 3011693,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12743.18214,
                "variance": 162388691.1
              },
              {
                "average": 1,
                "count": 3011693,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3011693,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5014435402,
                "count": 3011693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999979992,
                "variance": 0.2499979992
              },
              {
                "average": 0.0004900897933,
                "count": 3011693,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02213254997,
                "variance": 0.000489849768
              },
              {
                "average": 1.675808922,
                "count": 3011693,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.863716542,
                "variance": 3.47343935
              },
              {
                "average": 0.7588002441,
                "count": 3011693,
                "maximum": 20.44199944,
                "minimum": -19.48800087,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51031653,
                "variance": 110.4667536
              },
              {
                "average": 0.5052570099,
                "count": 3011693,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999724461,
                "variance": 0.2499724468
              },
              {
                "average": 426.0905653,
                "count": 3011693,
                "maximum": 456,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.41791589,
                "variance": 269.547962
              },
              {
                "average": 220494695.5,
                "count": 3011693,
                "maximum": 220723001.9,
                "minimum": 220420016.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 129646.9548,
                "variance": 16808332880.0
              },
              {
                "average": 0.5052570099,
                "count": 3011693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999724461,
                "variance": 0.2499724468
              },
              {
                "average": 0,
                "count": 3011693,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3011693,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3011693,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2018668569,
                "count": 3011693,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4013934261,
                "variance": 0.1611166825
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95020.81825,
              2368699.173,
              0.9479761216,
              -94524.85825,
              2369172.873,
              4.447976122
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95020.81825386749,
                    2368699.1732460237,
                    0.947976121587882
                  ],
                  [
                    -95020.81825386749,
                    2369172.873246024,
                    0.947976121587882
                  ],
                  [
                    -94524.8582538675,
                    2369172.873246024,
                    4.447976121587882
                  ],
                  [
                    -94524.8582538675,
                    2368699.1732460237,
                    4.447976121587882
                  ],
                  [
                    -95020.81825386749,
                    2368699.1732460237,
                    0.947976121587882
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:21+00:00",
            "end_time": "2018-09-08T05:33:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2244.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61483650821293,
              71.3078704962136,
              1.710072516429495
            ],
            [
              -156.61534485196842,
              71.31221918710723,
              1.710072516429495
            ],
            [
              -156.60183254131115,
              71.31239814588056,
              2.990072516429496
            ],
            [
              -156.60132681854967,
              71.30804941495032,
              2.990072516429496
            ],
            [
              -156.61483650821293,
              71.3078704962136,
              1.710072516429495
            ]
          ]
        ]
      },
      "bbox": [
        -156.6153449,
        71.3078705,
        1.710072516,
        -156.6013268,
        71.31239815,
        2.990072516
      ],
      "properties": {
        "datetime": "2018-09-11T17:35:29Z",
        "pc:count": 3543729,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95642.72242,
            "count": 3543729,
            "maximum": -95403.85562,
            "minimum": -95899.83562,
            "name": "X",
            "position": 0,
            "stddev": 135.2460494,
            "variance": 18291.49388
          },
          {
            "average": 2369885.228,
            "count": 3543729,
            "maximum": 2370120.399,
            "minimum": 2369646.739,
            "name": "Y",
            "position": 1,
            "stddev": 126.6833032,
            "variance": 16048.65932
          },
          {
            "average": 2.464186863,
            "count": 3543729,
            "maximum": 2.990072516,
            "minimum": 1.710072516,
            "name": "Z",
            "position": 2,
            "stddev": 0.219000481,
            "variance": 0.04796121068
          },
          {
            "average": 35111.13347,
            "count": 3543729,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10569.38122,
            "variance": 111711819.3
          },
          {
            "average": 1,
            "count": 3543729,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3543729,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4982971328,
            "count": 3543729,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999971708,
            "variance": 0.2499971708
          },
          {
            "average": 0.0004500908506,
            "count": 3543729,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02121057274,
            "variance": 0.0004498883958
          },
          {
            "average": 1.294338252,
            "count": 3543729,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5712330654,
            "variance": 0.326307215
          },
          {
            "average": 1.239217693,
            "count": 3543729,
            "maximum": 20.38199997,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.74137306,
            "variance": 115.3770952
          },
          {
            "average": 0.4918338846,
            "count": 3543729,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999333806,
            "variance": 0.2499333851
          },
          {
            "average": 415.9091358,
            "count": 3543729,
            "maximum": 454,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 10.25193619,
            "variance": 105.1021957
          },
          {
            "average": 220439408.8,
            "count": 3543729,
            "maximum": 220722529.1,
            "minimum": 220417851,
            "name": "GpsTime",
            "position": 12,
            "stddev": 75904.94918,
            "variance": 5761561310
          },
          {
            "average": 0.4918338846,
            "count": 3543729,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999333806,
            "variance": 0.2499333851
          },
          {
            "average": 0,
            "count": 3543729,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3543729,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3543729,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.240702661,
            "count": 3543729,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4275101654,
            "variance": 0.1827649415
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95899.83562,
          2369646.739,
          1.710072516,
          -95403.85562,
          2370120.399,
          2.990072516
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95899.8356199067,
                2369646.7389161075,
                1.710072516429495
              ],
              [
                -95899.8356199067,
                2370120.3989161076,
                1.710072516429495
              ],
              [
                -95403.8556199067,
                2370120.3989161076,
                2.990072516429496
              ],
              [
                -95403.8556199067,
                2369646.7389161075,
                2.990072516429496
              ],
              [
                -95899.8356199067,
                2369646.7389161075,
                1.710072516429495
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:35:29+00:00",
        "end_time": "2018-09-08T04:57:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2244.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2244.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2244.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2244.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6153449,
            71.3078705,
            1.710072516,
            -156.6013268,
            71.31239815,
            2.990072516
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61483650821293,
                  71.3078704962136,
                  1.710072516429495
                ],
                [
                  -156.61534485196842,
                  71.31221918710723,
                  1.710072516429495
                ],
                [
                  -156.60183254131115,
                  71.31239814588056,
                  2.990072516429496
                ],
                [
                  -156.60132681854967,
                  71.30804941495032,
                  2.990072516429496
                ],
                [
                  -156.61483650821293,
                  71.3078704962136,
                  1.710072516429495
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2244.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2244.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:35:29Z",
            "pc:count": 3543729,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95642.72242,
                "count": 3543729,
                "maximum": -95403.85562,
                "minimum": -95899.83562,
                "name": "X",
                "position": 0,
                "stddev": 135.2460494,
                "variance": 18291.49388
              },
              {
                "average": 2369885.228,
                "count": 3543729,
                "maximum": 2370120.399,
                "minimum": 2369646.739,
                "name": "Y",
                "position": 1,
                "stddev": 126.6833032,
                "variance": 16048.65932
              },
              {
                "average": 2.464186863,
                "count": 3543729,
                "maximum": 2.990072516,
                "minimum": 1.710072516,
                "name": "Z",
                "position": 2,
                "stddev": 0.219000481,
                "variance": 0.04796121068
              },
              {
                "average": 35111.13347,
                "count": 3543729,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10569.38122,
                "variance": 111711819.3
              },
              {
                "average": 1,
                "count": 3543729,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3543729,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4982971328,
                "count": 3543729,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999971708,
                "variance": 0.2499971708
              },
              {
                "average": 0.0004500908506,
                "count": 3543729,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02121057274,
                "variance": 0.0004498883958
              },
              {
                "average": 1.294338252,
                "count": 3543729,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5712330654,
                "variance": 0.326307215
              },
              {
                "average": 1.239217693,
                "count": 3543729,
                "maximum": 20.38199997,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.74137306,
                "variance": 115.3770952
              },
              {
                "average": 0.4918338846,
                "count": 3543729,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999333806,
                "variance": 0.2499333851
              },
              {
                "average": 415.9091358,
                "count": 3543729,
                "maximum": 454,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 10.25193619,
                "variance": 105.1021957
              },
              {
                "average": 220439408.8,
                "count": 3543729,
                "maximum": 220722529.1,
                "minimum": 220417851,
                "name": "GpsTime",
                "position": 12,
                "stddev": 75904.94918,
                "variance": 5761561310
              },
              {
                "average": 0.4918338846,
                "count": 3543729,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999333806,
                "variance": 0.2499333851
              },
              {
                "average": 0,
                "count": 3543729,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3543729,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3543729,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.240702661,
                "count": 3543729,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4275101654,
                "variance": 0.1827649415
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95899.83562,
              2369646.739,
              1.710072516,
              -95403.85562,
              2370120.399,
              2.990072516
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95899.8356199067,
                    2369646.7389161075,
                    1.710072516429495
                  ],
                  [
                    -95899.8356199067,
                    2370120.3989161076,
                    1.710072516429495
                  ],
                  [
                    -95403.8556199067,
                    2370120.3989161076,
                    2.990072516429496
                  ],
                  [
                    -95403.8556199067,
                    2369646.7389161075,
                    2.990072516429496
                  ],
                  [
                    -95899.8356199067,
                    2369646.7389161075,
                    1.710072516429495
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:35:29+00:00",
            "end_time": "2018-09-08T04:57:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2327.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65145316585952,
              71.33273002848057,
              -16.0640211390445
            ],
            [
              -156.65196889245198,
              71.33707678713799,
              -16.0640211390445
            ],
            [
              -156.63844021667893,
              71.33725830917334,
              20.735978860955505
            ],
            [
              -156.6379271154471,
              71.33291150986548,
              20.735978860955505
            ],
            [
              -156.65145316585952,
              71.33273002848057,
              -16.0640211390445
            ]
          ]
        ]
      },
      "bbox": [
        -156.6519689,
        71.33273003,
        -16.06402114,
        -156.6379271,
        71.33725831,
        20.73597886
      ],
      "properties": {
        "datetime": "2018-09-08T04:19:33Z",
        "pc:count": 2860456,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96894.16799,
            "count": 2860456,
            "maximum": -96638.02803,
            "minimum": -97134.06803,
            "name": "X",
            "position": 0,
            "stddev": 131.7968561,
            "variance": 17370.41128
          },
          {
            "average": 2372646.14,
            "count": 2860456,
            "maximum": 2372876.625,
            "minimum": 2372403.245,
            "name": "Y",
            "position": 1,
            "stddev": 128.1359159,
            "variance": 16418.81293
          },
          {
            "average": 3.041026577,
            "count": 2860456,
            "maximum": 20.73597886,
            "minimum": -16.06402114,
            "name": "Z",
            "position": 2,
            "stddev": 1.858797004,
            "variance": 3.455126301
          },
          {
            "average": 24011.63177,
            "count": 2860456,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9283.458565,
            "variance": 86182602.93
          },
          {
            "average": 1.001788526,
            "count": 2860456,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04321842409,
            "variance": 0.001867832181
          },
          {
            "average": 1.0035788,
            "count": 2860456,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06175359529,
            "variance": 0.003813506531
          },
          {
            "average": 0.4982709051,
            "count": 2860456,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999970976,
            "variance": 0.2499970976
          },
          {
            "average": 0.0004212615052,
            "count": 2860456,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02052033604,
            "variance": 0.0004210841911
          },
          {
            "average": 2.035269901,
            "count": 2860456,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.231262653,
            "variance": 4.978533027
          },
          {
            "average": 0.8963942795,
            "count": 2860456,
            "maximum": 16.32600021,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.20258636,
            "variance": 104.0927685
          },
          {
            "average": 0.4881260191,
            "count": 2860456,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998590761,
            "variance": 0.2498590959
          },
          {
            "average": 405.2021143,
            "count": 2860456,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8859824649,
            "variance": 0.7849649281
          },
          {
            "average": 220414600.7,
            "count": 2860456,
            "maximum": 220415573.7,
            "minimum": 220413331.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 502.238733,
            "variance": 252243.745
          },
          {
            "average": 0.4881260191,
            "count": 2860456,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998590761,
            "variance": 0.2498590959
          },
          {
            "average": 0,
            "count": 2860456,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2860456,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2860456,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2090173735,
            "count": 2860456,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4066068972,
            "variance": 0.1653291688
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97134.06803,
          2372403.245,
          -16.06402114,
          -96638.02803,
          2372876.625,
          20.73597886
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97134.06802623624,
                2372403.245165952,
                -16.0640211390445
              ],
              [
                -97134.06802623624,
                2372876.625165952,
                -16.0640211390445
              ],
              [
                -96638.02802623624,
                2372876.625165952,
                20.735978860955505
              ],
              [
                -96638.02802623624,
                2372403.245165952,
                20.735978860955505
              ],
              [
                -97134.06802623624,
                2372403.245165952,
                -16.0640211390445
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:19:33+00:00",
        "end_time": "2018-09-08T03:42:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2327.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2327.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2327.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2327.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6519689,
            71.33273003,
            -16.06402114,
            -156.6379271,
            71.33725831,
            20.73597886
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65145316585952,
                  71.33273002848057,
                  -16.0640211390445
                ],
                [
                  -156.65196889245198,
                  71.33707678713799,
                  -16.0640211390445
                ],
                [
                  -156.63844021667893,
                  71.33725830917334,
                  20.735978860955505
                ],
                [
                  -156.6379271154471,
                  71.33291150986548,
                  20.735978860955505
                ],
                [
                  -156.65145316585952,
                  71.33273002848057,
                  -16.0640211390445
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2327.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2327.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:19:33Z",
            "pc:count": 2860456,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96894.16799,
                "count": 2860456,
                "maximum": -96638.02803,
                "minimum": -97134.06803,
                "name": "X",
                "position": 0,
                "stddev": 131.7968561,
                "variance": 17370.41128
              },
              {
                "average": 2372646.14,
                "count": 2860456,
                "maximum": 2372876.625,
                "minimum": 2372403.245,
                "name": "Y",
                "position": 1,
                "stddev": 128.1359159,
                "variance": 16418.81293
              },
              {
                "average": 3.041026577,
                "count": 2860456,
                "maximum": 20.73597886,
                "minimum": -16.06402114,
                "name": "Z",
                "position": 2,
                "stddev": 1.858797004,
                "variance": 3.455126301
              },
              {
                "average": 24011.63177,
                "count": 2860456,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9283.458565,
                "variance": 86182602.93
              },
              {
                "average": 1.001788526,
                "count": 2860456,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04321842409,
                "variance": 0.001867832181
              },
              {
                "average": 1.0035788,
                "count": 2860456,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06175359529,
                "variance": 0.003813506531
              },
              {
                "average": 0.4982709051,
                "count": 2860456,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999970976,
                "variance": 0.2499970976
              },
              {
                "average": 0.0004212615052,
                "count": 2860456,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02052033604,
                "variance": 0.0004210841911
              },
              {
                "average": 2.035269901,
                "count": 2860456,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.231262653,
                "variance": 4.978533027
              },
              {
                "average": 0.8963942795,
                "count": 2860456,
                "maximum": 16.32600021,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.20258636,
                "variance": 104.0927685
              },
              {
                "average": 0.4881260191,
                "count": 2860456,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998590761,
                "variance": 0.2498590959
              },
              {
                "average": 405.2021143,
                "count": 2860456,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8859824649,
                "variance": 0.7849649281
              },
              {
                "average": 220414600.7,
                "count": 2860456,
                "maximum": 220415573.7,
                "minimum": 220413331.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 502.238733,
                "variance": 252243.745
              },
              {
                "average": 0.4881260191,
                "count": 2860456,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998590761,
                "variance": 0.2498590959
              },
              {
                "average": 0,
                "count": 2860456,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2860456,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2860456,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2090173735,
                "count": 2860456,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4066068972,
                "variance": 0.1653291688
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97134.06803,
              2372403.245,
              -16.06402114,
              -96638.02803,
              2372876.625,
              20.73597886
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97134.06802623624,
                    2372403.245165952,
                    -16.0640211390445
                  ],
                  [
                    -97134.06802623624,
                    2372876.625165952,
                    -16.0640211390445
                  ],
                  [
                    -96638.02802623624,
                    2372876.625165952,
                    20.735978860955505
                  ],
                  [
                    -96638.02802623624,
                    2372403.245165952,
                    20.735978860955505
                  ],
                  [
                    -97134.06802623624,
                    2372403.245165952,
                    -16.0640211390445
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:19:33+00:00",
            "end_time": "2018-09-08T03:42:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2366.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57349903714146,
              71.34855190324107,
              -15.487681212834506
            ],
            [
              -156.57400004792936,
              71.35290006624298,
              -15.487681212834506
            ],
            [
              -156.56046062365868,
              71.35307626626329,
              12.972318787165495
            ],
            [
              -156.5599622429858,
              71.3487280637539,
              12.972318787165495
            ],
            [
              -156.57349903714146,
              71.34855190324107,
              -15.487681212834506
            ]
          ]
        ]
      },
      "bbox": [
        -156.574,
        71.3485519,
        -15.48768121,
        -156.5599622,
        71.35307627,
        12.97231879
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:41Z",
        "pc:count": 2036048,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93960.00022,
            "count": 2036048,
            "maximum": -93716.96802,
            "minimum": -94213.02802,
            "name": "X",
            "position": 0,
            "stddev": 135.2644712,
            "variance": 18296.47717
          },
          {
            "average": 2374260.135,
            "count": 2036048,
            "maximum": 2374484.698,
            "minimum": 2374011.238,
            "name": "Y",
            "position": 1,
            "stddev": 122.6785954,
            "variance": 15050.03776
          },
          {
            "average": 1.636861524,
            "count": 2036048,
            "maximum": 12.97231879,
            "minimum": -15.48768121,
            "name": "Z",
            "position": 2,
            "stddev": 0.8720311843,
            "variance": 0.7604383864
          },
          {
            "average": 15740.49526,
            "count": 2036048,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9316.332777,
            "variance": 86794056.4
          },
          {
            "average": 1.00002554,
            "count": 2036048,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005053615854,
            "variance": 2.55390332e-05
          },
          {
            "average": 1.000051079,
            "count": 2036048,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007146800813,
            "variance": 5.107676186e-05
          },
          {
            "average": 0.5039458795,
            "count": 2036048,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999845526,
            "variance": 0.2499845528
          },
          {
            "average": 0.0005510675583,
            "count": 2036048,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02346836495,
            "variance": 0.0005507641534
          },
          {
            "average": 5.096627879,
            "count": 2036048,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.740856227,
            "variance": 13.99400531
          },
          {
            "average": 0.122210095,
            "count": 2036048,
            "maximum": 16.33799934,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.090420835,
            "variance": 82.63575096
          },
          {
            "average": 0.5348768791,
            "count": 2036048,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987822426,
            "variance": 0.2487837255
          },
          {
            "average": 406.7326605,
            "count": 2036048,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8439026003,
            "variance": 0.7121715988
          },
          {
            "average": 220415460.1,
            "count": 2036048,
            "maximum": 220416661.6,
            "minimum": 220414380.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 484.0636941,
            "variance": 234317.6599
          },
          {
            "average": 0.5348768791,
            "count": 2036048,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987822426,
            "variance": 0.2487837255
          },
          {
            "average": 0,
            "count": 2036048,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2036048,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2036048,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1805659788,
            "count": 2036048,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3846582623,
            "variance": 0.1479619788
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94213.02802,
          2374011.238,
          -15.48768121,
          -93716.96802,
          2374484.698,
          12.97231879
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94213.02802345774,
                2374011.2376931845,
                -15.487681212834506
              ],
              [
                -94213.02802345774,
                2374484.6976931845,
                -15.487681212834506
              ],
              [
                -93716.96802345774,
                2374484.6976931845,
                12.972318787165495
              ],
              [
                -93716.96802345774,
                2374011.2376931845,
                12.972318787165495
              ],
              [
                -94213.02802345774,
                2374011.2376931845,
                -15.487681212834506
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:41+00:00",
        "end_time": "2018-09-08T03:59:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2366.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2366.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2366.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2366.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.574,
            71.3485519,
            -15.48768121,
            -156.5599622,
            71.35307627,
            12.97231879
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57349903714146,
                  71.34855190324107,
                  -15.487681212834506
                ],
                [
                  -156.57400004792936,
                  71.35290006624298,
                  -15.487681212834506
                ],
                [
                  -156.56046062365868,
                  71.35307626626329,
                  12.972318787165495
                ],
                [
                  -156.5599622429858,
                  71.3487280637539,
                  12.972318787165495
                ],
                [
                  -156.57349903714146,
                  71.34855190324107,
                  -15.487681212834506
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2366.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2366.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:41Z",
            "pc:count": 2036048,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93960.00022,
                "count": 2036048,
                "maximum": -93716.96802,
                "minimum": -94213.02802,
                "name": "X",
                "position": 0,
                "stddev": 135.2644712,
                "variance": 18296.47717
              },
              {
                "average": 2374260.135,
                "count": 2036048,
                "maximum": 2374484.698,
                "minimum": 2374011.238,
                "name": "Y",
                "position": 1,
                "stddev": 122.6785954,
                "variance": 15050.03776
              },
              {
                "average": 1.636861524,
                "count": 2036048,
                "maximum": 12.97231879,
                "minimum": -15.48768121,
                "name": "Z",
                "position": 2,
                "stddev": 0.8720311843,
                "variance": 0.7604383864
              },
              {
                "average": 15740.49526,
                "count": 2036048,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9316.332777,
                "variance": 86794056.4
              },
              {
                "average": 1.00002554,
                "count": 2036048,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005053615854,
                "variance": 2.55390332e-05
              },
              {
                "average": 1.000051079,
                "count": 2036048,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007146800813,
                "variance": 5.107676186e-05
              },
              {
                "average": 0.5039458795,
                "count": 2036048,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999845526,
                "variance": 0.2499845528
              },
              {
                "average": 0.0005510675583,
                "count": 2036048,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02346836495,
                "variance": 0.0005507641534
              },
              {
                "average": 5.096627879,
                "count": 2036048,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.740856227,
                "variance": 13.99400531
              },
              {
                "average": 0.122210095,
                "count": 2036048,
                "maximum": 16.33799934,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.090420835,
                "variance": 82.63575096
              },
              {
                "average": 0.5348768791,
                "count": 2036048,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987822426,
                "variance": 0.2487837255
              },
              {
                "average": 406.7326605,
                "count": 2036048,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8439026003,
                "variance": 0.7121715988
              },
              {
                "average": 220415460.1,
                "count": 2036048,
                "maximum": 220416661.6,
                "minimum": 220414380.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 484.0636941,
                "variance": 234317.6599
              },
              {
                "average": 0.5348768791,
                "count": 2036048,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987822426,
                "variance": 0.2487837255
              },
              {
                "average": 0,
                "count": 2036048,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2036048,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2036048,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1805659788,
                "count": 2036048,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3846582623,
                "variance": 0.1479619788
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94213.02802,
              2374011.238,
              -15.48768121,
              -93716.96802,
              2374484.698,
              12.97231879
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94213.02802345774,
                    2374011.2376931845,
                    -15.487681212834506
                  ],
                  [
                    -94213.02802345774,
                    2374484.6976931845,
                    -15.487681212834506
                  ],
                  [
                    -93716.96802345774,
                    2374484.6976931845,
                    12.972318787165495
                  ],
                  [
                    -93716.96802345774,
                    2374011.2376931845,
                    12.972318787165495
                  ],
                  [
                    -94213.02802345774,
                    2374011.2376931845,
                    -15.487681212834506
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:41+00:00",
            "end_time": "2018-09-08T03:59:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2184.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60294688195142,
              71.29548666463214,
              -9.339894640455803
            ],
            [
              -156.60345257151909,
              71.29983447097747,
              -9.339894640455803
            ],
            [
              -156.58995090720416,
              71.30001255664874,
              45.920105359544195
            ],
            [
              -156.58944783484085,
              71.29566471049868,
              45.920105359544195
            ],
            [
              -156.60294688195142,
              71.29548666463214,
              -9.339894640455803
            ]
          ]
        ]
      },
      "bbox": [
        -156.6034526,
        71.29548666,
        -9.33989464,
        -156.5894478,
        71.30001256,
        45.92010536
      ],
      "properties": {
        "datetime": "2018-09-11T17:43:16Z",
        "pc:count": 4292326,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95267.87169,
            "count": 4292326,
            "maximum": -95020.96009,
            "minimum": -95516.82009,
            "name": "X",
            "position": 0,
            "stddev": 135.1136394,
            "variance": 18255.69556
          },
          {
            "average": 2368521.905,
            "count": 4292326,
            "maximum": 2368756.365,
            "minimum": 2368282.765,
            "name": "Y",
            "position": 1,
            "stddev": 126.9558805,
            "variance": 16117.79559
          },
          {
            "average": 3.036892339,
            "count": 4292326,
            "maximum": 45.92010536,
            "minimum": -9.33989464,
            "name": "Z",
            "position": 2,
            "stddev": 0.2403605129,
            "variance": 0.05777317614
          },
          {
            "average": 30400.73745,
            "count": 4292326,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12391.67443,
            "variance": 153553595.2
          },
          {
            "average": 1.000020502,
            "count": 4292326,
            "maximum": 12,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01109097995,
            "variance": 0.0001230098364
          },
          {
            "average": 1.000041003,
            "count": 4292326,
            "maximum": 12,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.018668888,
            "variance": 0.0003485273793
          },
          {
            "average": 0.04627048365,
            "count": 4292326,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.2100703127,
            "variance": 0.04412953627
          },
          {
            "average": 7.874518385e-05,
            "count": 4292326,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.008873499951,
            "variance": 7.873900139e-05
          },
          {
            "average": 1.201921522,
            "count": 4292326,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4054962422,
            "variance": 0.1644272024
          },
          {
            "average": 3.363917834,
            "count": 4292326,
            "maximum": 20.49600029,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83680913,
            "variance": 117.4364322
          },
          {
            "average": 0.5191259937,
            "count": 4292326,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996341207,
            "variance": 0.2496342545
          },
          {
            "average": 425.6643377,
            "count": 4292326,
            "maximum": 456,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.40760592,
            "variance": 269.2095322
          },
          {
            "average": 220490746.7,
            "count": 4292326,
            "maximum": 220722996.3,
            "minimum": 220420027.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 127288.6364,
            "variance": 16202396960.0
          },
          {
            "average": 0.5191259937,
            "count": 4292326,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996341207,
            "variance": 0.2496342545
          },
          {
            "average": 0,
            "count": 4292326,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4292326,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4292326,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2365027726,
            "count": 4292326,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4249344105,
            "variance": 0.1805692532
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95516.82009,
          2368282.765,
          -9.33989464,
          -95020.96009,
          2368756.365,
          45.92010536
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95516.8200933497,
                2368282.7647735616,
                -9.339894640455803
              ],
              [
                -95516.8200933497,
                2368756.3647735612,
                -9.339894640455803
              ],
              [
                -95020.96009334971,
                2368756.3647735612,
                45.920105359544195
              ],
              [
                -95020.96009334971,
                2368282.7647735616,
                45.920105359544195
              ],
              [
                -95516.8200933497,
                2368282.7647735616,
                -9.339894640455803
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:43:16+00:00",
        "end_time": "2018-09-08T05:33:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2184.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2184.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2184.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2184.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6034526,
            71.29548666,
            -9.33989464,
            -156.5894478,
            71.30001256,
            45.92010536
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60294688195142,
                  71.29548666463214,
                  -9.339894640455803
                ],
                [
                  -156.60345257151909,
                  71.29983447097747,
                  -9.339894640455803
                ],
                [
                  -156.58995090720416,
                  71.30001255664874,
                  45.920105359544195
                ],
                [
                  -156.58944783484085,
                  71.29566471049868,
                  45.920105359544195
                ],
                [
                  -156.60294688195142,
                  71.29548666463214,
                  -9.339894640455803
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2184.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2184.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:43:16Z",
            "pc:count": 4292326,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95267.87169,
                "count": 4292326,
                "maximum": -95020.96009,
                "minimum": -95516.82009,
                "name": "X",
                "position": 0,
                "stddev": 135.1136394,
                "variance": 18255.69556
              },
              {
                "average": 2368521.905,
                "count": 4292326,
                "maximum": 2368756.365,
                "minimum": 2368282.765,
                "name": "Y",
                "position": 1,
                "stddev": 126.9558805,
                "variance": 16117.79559
              },
              {
                "average": 3.036892339,
                "count": 4292326,
                "maximum": 45.92010536,
                "minimum": -9.33989464,
                "name": "Z",
                "position": 2,
                "stddev": 0.2403605129,
                "variance": 0.05777317614
              },
              {
                "average": 30400.73745,
                "count": 4292326,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12391.67443,
                "variance": 153553595.2
              },
              {
                "average": 1.000020502,
                "count": 4292326,
                "maximum": 12,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01109097995,
                "variance": 0.0001230098364
              },
              {
                "average": 1.000041003,
                "count": 4292326,
                "maximum": 12,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.018668888,
                "variance": 0.0003485273793
              },
              {
                "average": 0.04627048365,
                "count": 4292326,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.2100703127,
                "variance": 0.04412953627
              },
              {
                "average": 7.874518385e-05,
                "count": 4292326,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.008873499951,
                "variance": 7.873900139e-05
              },
              {
                "average": 1.201921522,
                "count": 4292326,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4054962422,
                "variance": 0.1644272024
              },
              {
                "average": 3.363917834,
                "count": 4292326,
                "maximum": 20.49600029,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83680913,
                "variance": 117.4364322
              },
              {
                "average": 0.5191259937,
                "count": 4292326,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996341207,
                "variance": 0.2496342545
              },
              {
                "average": 425.6643377,
                "count": 4292326,
                "maximum": 456,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.40760592,
                "variance": 269.2095322
              },
              {
                "average": 220490746.7,
                "count": 4292326,
                "maximum": 220722996.3,
                "minimum": 220420027.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 127288.6364,
                "variance": 16202396960.0
              },
              {
                "average": 0.5191259937,
                "count": 4292326,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996341207,
                "variance": 0.2496342545
              },
              {
                "average": 0,
                "count": 4292326,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4292326,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4292326,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2365027726,
                "count": 4292326,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4249344105,
                "variance": 0.1805692532
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95516.82009,
              2368282.765,
              -9.33989464,
              -95020.96009,
              2368756.365,
              45.92010536
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95516.8200933497,
                    2368282.7647735616,
                    -9.339894640455803
                  ],
                  [
                    -95516.8200933497,
                    2368756.3647735612,
                    -9.339894640455803
                  ],
                  [
                    -95020.96009334971,
                    2368756.3647735612,
                    45.920105359544195
                  ],
                  [
                    -95020.96009334971,
                    2368282.7647735616,
                    45.920105359544195
                  ],
                  [
                    -95516.8200933497,
                    2368282.7647735616,
                    -9.339894640455803
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:43:16+00:00",
            "end_time": "2018-09-08T05:33:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2348.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6252900844693,
              71.34073892934525,
              0.895930267515373
            ],
            [
              -156.6258009509625,
              71.3450863605081,
              0.895930267515373
            ],
            [
              -156.61226721646872,
              71.34526609738839,
              21.375930267515372
            ],
            [
              -156.61175897760398,
              71.34091862594995,
              21.375930267515372
            ],
            [
              -156.6252900844693,
              71.34073892934525,
              0.895930267515373
            ]
          ]
        ]
      },
      "bbox": [
        -156.625801,
        71.34073893,
        0.8959302675,
        -156.611759,
        71.3452661,
        21.37593027
      ],
      "properties": {
        "datetime": "2018-09-08T04:19:11Z",
        "pc:count": 2617998,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95888.48621,
            "count": 2617998,
            "maximum": -95645.62219,
            "minimum": -96141.66219,
            "name": "X",
            "position": 0,
            "stddev": 137.0788911,
            "variance": 18790.62239
          },
          {
            "average": 2373468.414,
            "count": 2617998,
            "maximum": 2373709.403,
            "minimum": 2373235.983,
            "name": "Y",
            "position": 1,
            "stddev": 122.3697322,
            "variance": 14974.35136
          },
          {
            "average": 2.678448921,
            "count": 2617998,
            "maximum": 21.37593027,
            "minimum": 0.8959302675,
            "name": "Z",
            "position": 2,
            "stddev": 1.091707192,
            "variance": 1.191824594
          },
          {
            "average": 21379.00796,
            "count": 2617998,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10279.239,
            "variance": 105662754.3
          },
          {
            "average": 1.000503438,
            "count": 2617998,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02243178249,
            "variance": 0.0005031848656
          },
          {
            "average": 1.001006876,
            "count": 2617998,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03171534063,
            "variance": 0.001005862831
          },
          {
            "average": 0.5006210853,
            "count": 2617998,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999997097,
            "variance": 0.2499997097
          },
          {
            "average": 0.0004255159859,
            "count": 2617998,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02062365352,
            "variance": 0.0004253350845
          },
          {
            "average": 2.608772428,
            "count": 2617998,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.828090892,
            "variance": 7.998098092
          },
          {
            "average": -0.510130889,
            "count": 2617998,
            "maximum": 16.37400055,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.781942069,
            "variance": 95.68639063
          },
          {
            "average": 0.470533209,
            "count": 2617998,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991310483,
            "variance": 0.2491318034
          },
          {
            "average": 405.0571284,
            "count": 2617998,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8401643865,
            "variance": 0.7058761963
          },
          {
            "average": 220414522.2,
            "count": 2617998,
            "maximum": 220415551.1,
            "minimum": 220413307.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 475.4959711,
            "variance": 226096.4185
          },
          {
            "average": 0.470533209,
            "count": 2617998,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991310483,
            "variance": 0.2491318034
          },
          {
            "average": 0,
            "count": 2617998,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2617998,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2617998,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1600872117,
            "count": 2617998,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3666869887,
            "variance": 0.1344593477
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96141.66219,
          2373235.983,
          0.8959302675,
          -95645.62219,
          2373709.403,
          21.37593027
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96141.66219487313,
                2373235.9827788947,
                0.895930267515373
              ],
              [
                -96141.66219487313,
                2373709.4027788946,
                0.895930267515373
              ],
              [
                -95645.62219487313,
                2373709.4027788946,
                21.375930267515372
              ],
              [
                -95645.62219487313,
                2373235.9827788947,
                21.375930267515372
              ],
              [
                -96141.66219487313,
                2373235.9827788947,
                0.895930267515373
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:19:11+00:00",
        "end_time": "2018-09-08T03:41:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2348.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2348.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2348.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2348.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.625801,
            71.34073893,
            0.8959302675,
            -156.611759,
            71.3452661,
            21.37593027
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6252900844693,
                  71.34073892934525,
                  0.895930267515373
                ],
                [
                  -156.6258009509625,
                  71.3450863605081,
                  0.895930267515373
                ],
                [
                  -156.61226721646872,
                  71.34526609738839,
                  21.375930267515372
                ],
                [
                  -156.61175897760398,
                  71.34091862594995,
                  21.375930267515372
                ],
                [
                  -156.6252900844693,
                  71.34073892934525,
                  0.895930267515373
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2348.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2348.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:19:11Z",
            "pc:count": 2617998,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95888.48621,
                "count": 2617998,
                "maximum": -95645.62219,
                "minimum": -96141.66219,
                "name": "X",
                "position": 0,
                "stddev": 137.0788911,
                "variance": 18790.62239
              },
              {
                "average": 2373468.414,
                "count": 2617998,
                "maximum": 2373709.403,
                "minimum": 2373235.983,
                "name": "Y",
                "position": 1,
                "stddev": 122.3697322,
                "variance": 14974.35136
              },
              {
                "average": 2.678448921,
                "count": 2617998,
                "maximum": 21.37593027,
                "minimum": 0.8959302675,
                "name": "Z",
                "position": 2,
                "stddev": 1.091707192,
                "variance": 1.191824594
              },
              {
                "average": 21379.00796,
                "count": 2617998,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10279.239,
                "variance": 105662754.3
              },
              {
                "average": 1.000503438,
                "count": 2617998,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02243178249,
                "variance": 0.0005031848656
              },
              {
                "average": 1.001006876,
                "count": 2617998,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03171534063,
                "variance": 0.001005862831
              },
              {
                "average": 0.5006210853,
                "count": 2617998,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999997097,
                "variance": 0.2499997097
              },
              {
                "average": 0.0004255159859,
                "count": 2617998,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02062365352,
                "variance": 0.0004253350845
              },
              {
                "average": 2.608772428,
                "count": 2617998,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.828090892,
                "variance": 7.998098092
              },
              {
                "average": -0.510130889,
                "count": 2617998,
                "maximum": 16.37400055,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.781942069,
                "variance": 95.68639063
              },
              {
                "average": 0.470533209,
                "count": 2617998,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991310483,
                "variance": 0.2491318034
              },
              {
                "average": 405.0571284,
                "count": 2617998,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8401643865,
                "variance": 0.7058761963
              },
              {
                "average": 220414522.2,
                "count": 2617998,
                "maximum": 220415551.1,
                "minimum": 220413307.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 475.4959711,
                "variance": 226096.4185
              },
              {
                "average": 0.470533209,
                "count": 2617998,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991310483,
                "variance": 0.2491318034
              },
              {
                "average": 0,
                "count": 2617998,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2617998,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2617998,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1600872117,
                "count": 2617998,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3666869887,
                "variance": 0.1344593477
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96141.66219,
              2373235.983,
              0.8959302675,
              -95645.62219,
              2373709.403,
              21.37593027
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96141.66219487313,
                    2373235.9827788947,
                    0.895930267515373
                  ],
                  [
                    -96141.66219487313,
                    2373709.4027788946,
                    0.895930267515373
                  ],
                  [
                    -95645.62219487313,
                    2373709.4027788946,
                    21.375930267515372
                  ],
                  [
                    -95645.62219487313,
                    2373235.9827788947,
                    21.375930267515372
                  ],
                  [
                    -96141.66219487313,
                    2373235.9827788947,
                    0.895930267515373
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:19:11+00:00",
            "end_time": "2018-09-08T03:41:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2344.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5616354087304,
              71.33637058317636,
              0.905069115326684
            ],
            [
              -156.5619015806162,
              71.33869260674682,
              0.905069115326684
            ],
            [
              -156.5591068198656,
              71.33872890159917,
              1.345069115326684
            ],
            [
              -156.55884093776956,
              71.33640687368593,
              1.345069115326684
            ],
            [
              -156.5616354087304,
              71.33637058317636,
              0.905069115326684
            ]
          ]
        ]
      },
      "bbox": [
        -156.5619016,
        71.33637058,
        0.9050691153,
        -156.5588409,
        71.3387289,
        1.345069115
      ],
      "properties": {
        "datetime": "2018-09-08T04:56:36Z",
        "pc:count": 92947,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93790.68004,
            "count": 92947,
            "maximum": -93727.58322,
            "minimum": -93830.04322,
            "name": "X",
            "position": 0,
            "stddev": 22.67696614,
            "variance": 514.2447933
          },
          {
            "average": 2372755.338,
            "count": 92947,
            "maximum": 2372922.822,
            "minimum": 2372669.962,
            "name": "Y",
            "position": 1,
            "stddev": 58.75892896,
            "variance": 3452.611733
          },
          {
            "average": 1.136980097,
            "count": 92947,
            "maximum": 1.345069115,
            "minimum": 0.9050691153,
            "name": "Z",
            "position": 2,
            "stddev": 0.04729611197,
            "variance": 0.002236922207
          },
          {
            "average": 18196.75085,
            "count": 92947,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13719.35343,
            "variance": 188220658.4
          },
          {
            "average": 1,
            "count": 92947,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 92947,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5049867129,
            "count": 92947,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999778217,
            "variance": 0.2499778222
          },
          {
            "average": 0.0006993232703,
            "count": 92947,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02643561491,
            "variance": 0.0006988417359
          },
          {
            "average": 7.927195068,
            "count": 92947,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.241403216,
            "variance": 5.023888376
          },
          {
            "average": -1.723164018,
            "count": 92947,
            "maximum": 16.23600006,
            "minimum": -15.52799988,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.204251946,
            "variance": 51.90124611
          },
          {
            "average": 0.4749588475,
            "count": 92947,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993752333,
            "variance": 0.2493756237
          },
          {
            "average": 410.1263623,
            "count": 92947,
            "maximum": 411,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6256524524,
            "variance": 0.3914409912
          },
          {
            "average": 220417391.6,
            "count": 92947,
            "maximum": 220417796.4,
            "minimum": 220416674.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 339.9398803,
            "variance": 115559.1222
          },
          {
            "average": 0.4749588475,
            "count": 92947,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993752333,
            "variance": 0.2493756237
          },
          {
            "average": 0,
            "count": 92947,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 92947,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 92947,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06317578835,
            "count": 92947,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2432801777,
            "variance": 0.05918524488
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93830.04322,
          2372669.962,
          0.9050691153,
          -93727.58322,
          2372922.822,
          1.345069115
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93830.04321750945,
                2372669.961669814,
                0.905069115326684
              ],
              [
                -93830.04321750945,
                2372922.821669814,
                0.905069115326684
              ],
              [
                -93727.58321750945,
                2372922.821669814,
                1.345069115326684
              ],
              [
                -93727.58321750945,
                2372669.961669814,
                1.345069115326684
              ],
              [
                -93830.04321750945,
                2372669.961669814,
                0.905069115326684
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:56:36+00:00",
        "end_time": "2018-09-08T04:37:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2344.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2344.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2344.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2344.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5619016,
            71.33637058,
            0.9050691153,
            -156.5588409,
            71.3387289,
            1.345069115
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5616354087304,
                  71.33637058317636,
                  0.905069115326684
                ],
                [
                  -156.5619015806162,
                  71.33869260674682,
                  0.905069115326684
                ],
                [
                  -156.5591068198656,
                  71.33872890159917,
                  1.345069115326684
                ],
                [
                  -156.55884093776956,
                  71.33640687368593,
                  1.345069115326684
                ],
                [
                  -156.5616354087304,
                  71.33637058317636,
                  0.905069115326684
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2344.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2344.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:56:36Z",
            "pc:count": 92947,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93790.68004,
                "count": 92947,
                "maximum": -93727.58322,
                "minimum": -93830.04322,
                "name": "X",
                "position": 0,
                "stddev": 22.67696614,
                "variance": 514.2447933
              },
              {
                "average": 2372755.338,
                "count": 92947,
                "maximum": 2372922.822,
                "minimum": 2372669.962,
                "name": "Y",
                "position": 1,
                "stddev": 58.75892896,
                "variance": 3452.611733
              },
              {
                "average": 1.136980097,
                "count": 92947,
                "maximum": 1.345069115,
                "minimum": 0.9050691153,
                "name": "Z",
                "position": 2,
                "stddev": 0.04729611197,
                "variance": 0.002236922207
              },
              {
                "average": 18196.75085,
                "count": 92947,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13719.35343,
                "variance": 188220658.4
              },
              {
                "average": 1,
                "count": 92947,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 92947,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5049867129,
                "count": 92947,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999778217,
                "variance": 0.2499778222
              },
              {
                "average": 0.0006993232703,
                "count": 92947,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02643561491,
                "variance": 0.0006988417359
              },
              {
                "average": 7.927195068,
                "count": 92947,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.241403216,
                "variance": 5.023888376
              },
              {
                "average": -1.723164018,
                "count": 92947,
                "maximum": 16.23600006,
                "minimum": -15.52799988,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.204251946,
                "variance": 51.90124611
              },
              {
                "average": 0.4749588475,
                "count": 92947,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993752333,
                "variance": 0.2493756237
              },
              {
                "average": 410.1263623,
                "count": 92947,
                "maximum": 411,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6256524524,
                "variance": 0.3914409912
              },
              {
                "average": 220417391.6,
                "count": 92947,
                "maximum": 220417796.4,
                "minimum": 220416674.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 339.9398803,
                "variance": 115559.1222
              },
              {
                "average": 0.4749588475,
                "count": 92947,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993752333,
                "variance": 0.2493756237
              },
              {
                "average": 0,
                "count": 92947,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 92947,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 92947,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06317578835,
                "count": 92947,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2432801777,
                "variance": 0.05918524488
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93830.04322,
              2372669.962,
              0.9050691153,
              -93727.58322,
              2372922.822,
              1.345069115
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93830.04321750945,
                    2372669.961669814,
                    0.905069115326684
                  ],
                  [
                    -93830.04321750945,
                    2372922.821669814,
                    0.905069115326684
                  ],
                  [
                    -93727.58321750945,
                    2372922.821669814,
                    1.345069115326684
                  ],
                  [
                    -93727.58321750945,
                    2372669.961669814,
                    1.345069115326684
                  ],
                  [
                    -93830.04321750945,
                    2372669.961669814,
                    0.905069115326684
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:56:36+00:00",
            "end_time": "2018-09-08T04:37:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2345.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65142915007604,
              71.34117911819033,
              0.927858321174227
            ],
            [
              -156.6514452551397,
              71.34131483976407,
              0.927858321174227
            ],
            [
              -156.65090732661838,
              71.34132207263416,
              1.347858321174227
            ],
            [
              -156.65089122481524,
              71.34118635100984,
              1.347858321174227
            ],
            [
              -156.65142915007604,
              71.34117911819033,
              0.927858321174227
            ]
          ]
        ]
      },
      "bbox": [
        -156.6514453,
        71.34117912,
        0.9278583212,
        -156.6508912,
        71.34132207,
        1.347858321
      ],
      "properties": {
        "datetime": "2018-09-08T03:52:33Z",
        "pc:count": 1218,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97083.73344,
            "count": 1218,
            "maximum": -97076.77206,
            "minimum": -97096.49206,
            "name": "X",
            "position": 0,
            "stddev": 4.586720022,
            "variance": 21.03800056
          },
          {
            "average": 2373327.23,
            "count": 1218,
            "maximum": 2373336.652,
            "minimum": 2373321.872,
            "name": "Y",
            "position": 1,
            "stddev": 3.439263952,
            "variance": 11.82853653
          },
          {
            "average": 1.134319733,
            "count": 1218,
            "maximum": 1.347858321,
            "minimum": 0.9278583212,
            "name": "Z",
            "position": 2,
            "stddev": 0.07321947672,
            "variance": 0.005361091772
          },
          {
            "average": 13097.42939,
            "count": 1218,
            "maximum": 52585,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9295.245361,
            "variance": 86401586.32
          },
          {
            "average": 1,
            "count": 1218,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1218,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4835796388,
            "count": 1218,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999355692,
            "variance": 0.2499355734
          },
          {
            "average": 0.0008210180624,
            "count": 1218,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02865341275,
            "variance": 0.0008210180624
          },
          {
            "average": 7.771756979,
            "count": 1218,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.383617815,
            "variance": 5.681633887
          },
          {
            "average": 4.524556648,
            "count": 1218,
            "maximum": 8.741999626,
            "minimum": -15.66600037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.934297422,
            "variance": 35.21588589
          },
          {
            "average": 0.4466338259,
            "count": 1218,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4973481019,
            "variance": 0.2473551345
          },
          {
            "average": 403.363711,
            "count": 1218,
            "maximum": 404,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6173844333,
            "variance": 0.3811635384
          },
          {
            "average": 220413567.2,
            "count": 1218,
            "maximum": 220413953.5,
            "minimum": 220412861.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 361.2697631,
            "variance": 130515.8417
          },
          {
            "average": 0.4466338259,
            "count": 1218,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4973481019,
            "variance": 0.2473551345
          },
          {
            "average": 0,
            "count": 1218,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1218,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1218,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07471264368,
            "count": 1218,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2630351093,
            "variance": 0.06918746871
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97096.49206,
          2373321.872,
          0.9278583212,
          -97076.77206,
          2373336.652,
          1.347858321
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97096.4920604203,
                2373321.871984039,
                0.927858321174227
              ],
              [
                -97096.4920604203,
                2373336.651984039,
                0.927858321174227
              ],
              [
                -97076.7720604203,
                2373336.651984039,
                1.347858321174227
              ],
              [
                -97076.7720604203,
                2373321.871984039,
                1.347858321174227
              ],
              [
                -97096.4920604203,
                2373321.871984039,
                0.927858321174227
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:52:33+00:00",
        "end_time": "2018-09-08T03:34:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2345.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2345.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2345.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2345.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6514453,
            71.34117912,
            0.9278583212,
            -156.6508912,
            71.34132207,
            1.347858321
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65142915007604,
                  71.34117911819033,
                  0.927858321174227
                ],
                [
                  -156.6514452551397,
                  71.34131483976407,
                  0.927858321174227
                ],
                [
                  -156.65090732661838,
                  71.34132207263416,
                  1.347858321174227
                ],
                [
                  -156.65089122481524,
                  71.34118635100984,
                  1.347858321174227
                ],
                [
                  -156.65142915007604,
                  71.34117911819033,
                  0.927858321174227
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2345.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2345.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:52:33Z",
            "pc:count": 1218,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97083.73344,
                "count": 1218,
                "maximum": -97076.77206,
                "minimum": -97096.49206,
                "name": "X",
                "position": 0,
                "stddev": 4.586720022,
                "variance": 21.03800056
              },
              {
                "average": 2373327.23,
                "count": 1218,
                "maximum": 2373336.652,
                "minimum": 2373321.872,
                "name": "Y",
                "position": 1,
                "stddev": 3.439263952,
                "variance": 11.82853653
              },
              {
                "average": 1.134319733,
                "count": 1218,
                "maximum": 1.347858321,
                "minimum": 0.9278583212,
                "name": "Z",
                "position": 2,
                "stddev": 0.07321947672,
                "variance": 0.005361091772
              },
              {
                "average": 13097.42939,
                "count": 1218,
                "maximum": 52585,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9295.245361,
                "variance": 86401586.32
              },
              {
                "average": 1,
                "count": 1218,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1218,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4835796388,
                "count": 1218,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999355692,
                "variance": 0.2499355734
              },
              {
                "average": 0.0008210180624,
                "count": 1218,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02865341275,
                "variance": 0.0008210180624
              },
              {
                "average": 7.771756979,
                "count": 1218,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.383617815,
                "variance": 5.681633887
              },
              {
                "average": 4.524556648,
                "count": 1218,
                "maximum": 8.741999626,
                "minimum": -15.66600037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.934297422,
                "variance": 35.21588589
              },
              {
                "average": 0.4466338259,
                "count": 1218,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4973481019,
                "variance": 0.2473551345
              },
              {
                "average": 403.363711,
                "count": 1218,
                "maximum": 404,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6173844333,
                "variance": 0.3811635384
              },
              {
                "average": 220413567.2,
                "count": 1218,
                "maximum": 220413953.5,
                "minimum": 220412861.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 361.2697631,
                "variance": 130515.8417
              },
              {
                "average": 0.4466338259,
                "count": 1218,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4973481019,
                "variance": 0.2473551345
              },
              {
                "average": 0,
                "count": 1218,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1218,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1218,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07471264368,
                "count": 1218,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2630351093,
                "variance": 0.06918746871
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97096.49206,
              2373321.872,
              0.9278583212,
              -97076.77206,
              2373336.652,
              1.347858321
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97096.4920604203,
                    2373321.871984039,
                    0.927858321174227
                  ],
                  [
                    -97096.4920604203,
                    2373336.651984039,
                    0.927858321174227
                  ],
                  [
                    -97076.7720604203,
                    2373336.651984039,
                    1.347858321174227
                  ],
                  [
                    -97076.7720604203,
                    2373321.871984039,
                    1.347858321174227
                  ],
                  [
                    -97096.4920604203,
                    2373321.871984039,
                    0.927858321174227
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:52:33+00:00",
            "end_time": "2018-09-08T03:34:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2300.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6775954455106,
              71.32471668647793,
              -13.166426456910607
            ],
            [
              -156.67811633163006,
              71.32906534323457,
              -13.166426456910607
            ],
            [
              -156.6645943500858,
              71.32924862669199,
              25.573573543089395
            ],
            [
              -156.66407608829357,
              71.32489992889155,
              25.573573543089395
            ],
            [
              -156.6775954455106,
              71.32471668647793,
              -13.166426456910607
            ]
          ]
        ]
      },
      "bbox": [
        -156.6781163,
        71.32471669,
        -13.16642646,
        -156.6640761,
        71.32924863,
        25.57357354
      ],
      "properties": {
        "datetime": "2018-09-08T04:19:56Z",
        "pc:count": 3208080,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97881.46079,
            "count": 3208080,
            "maximum": -97630.42438,
            "minimum": -98126.40438,
            "name": "X",
            "position": 0,
            "stddev": 135.3001618,
            "variance": 18306.13378
          },
          {
            "average": 2371817.557,
            "count": 3208080,
            "maximum": 2372043.971,
            "minimum": 2371570.351,
            "name": "Y",
            "position": 1,
            "stddev": 128.4103186,
            "variance": 16489.20991
          },
          {
            "average": 3.490570538,
            "count": 3208080,
            "maximum": 25.57357354,
            "minimum": -13.16642646,
            "name": "Z",
            "position": 2,
            "stddev": 1.969439267,
            "variance": 3.878691026
          },
          {
            "average": 30381.26744,
            "count": 3208080,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13482.92126,
            "variance": 181789165.7
          },
          {
            "average": 1.01645439,
            "count": 3208080,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1298367121,
            "variance": 0.01685757181
          },
          {
            "average": 1.032918443,
            "count": 3208080,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1840151828,
            "variance": 0.03386158751
          },
          {
            "average": 0.4994775691,
            "count": 3208080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499999805,
            "variance": 0.249999805
          },
          {
            "average": 0.0004572828608,
            "count": 3208080,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0213792866,
            "variance": 0.0004570738956
          },
          {
            "average": 1.746802761,
            "count": 3208080,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.467816471,
            "variance": 2.154485194
          },
          {
            "average": -0.127114435,
            "count": 3208080,
            "maximum": 16.30200005,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.36031719,
            "variance": 107.3361722
          },
          {
            "average": 0.4747967632,
            "count": 3208080,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993644707,
            "variance": 0.2493648746
          },
          {
            "average": 405.2066738,
            "count": 3208080,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9160922129,
            "variance": 0.8392249426
          },
          {
            "average": 220414597.2,
            "count": 3208080,
            "maximum": 220415596.2,
            "minimum": 220413354.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 516.9136515,
            "variance": 267199.7232
          },
          {
            "average": 0.4747967632,
            "count": 3208080,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993644707,
            "variance": 0.2493648746
          },
          {
            "average": 0,
            "count": 3208080,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3208080,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3208080,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2207840827,
            "count": 3208080,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4147752707,
            "variance": 0.1720385251
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98126.40438,
          2371570.351,
          -13.16642646,
          -97630.42438,
          2372043.971,
          25.57357354
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98126.40438098792,
                2371570.351263614,
                -13.166426456910607
              ],
              [
                -98126.40438098792,
                2372043.971263614,
                -13.166426456910607
              ],
              [
                -97630.42438098791,
                2372043.971263614,
                25.573573543089395
              ],
              [
                -97630.42438098791,
                2371570.351263614,
                25.573573543089395
              ],
              [
                -98126.40438098792,
                2371570.351263614,
                -13.166426456910607
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:19:56+00:00",
        "end_time": "2018-09-08T03:42:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2300.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2300.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2300.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2300.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6781163,
            71.32471669,
            -13.16642646,
            -156.6640761,
            71.32924863,
            25.57357354
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6775954455106,
                  71.32471668647793,
                  -13.166426456910607
                ],
                [
                  -156.67811633163006,
                  71.32906534323457,
                  -13.166426456910607
                ],
                [
                  -156.6645943500858,
                  71.32924862669199,
                  25.573573543089395
                ],
                [
                  -156.66407608829357,
                  71.32489992889155,
                  25.573573543089395
                ],
                [
                  -156.6775954455106,
                  71.32471668647793,
                  -13.166426456910607
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2300.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2300.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:19:56Z",
            "pc:count": 3208080,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97881.46079,
                "count": 3208080,
                "maximum": -97630.42438,
                "minimum": -98126.40438,
                "name": "X",
                "position": 0,
                "stddev": 135.3001618,
                "variance": 18306.13378
              },
              {
                "average": 2371817.557,
                "count": 3208080,
                "maximum": 2372043.971,
                "minimum": 2371570.351,
                "name": "Y",
                "position": 1,
                "stddev": 128.4103186,
                "variance": 16489.20991
              },
              {
                "average": 3.490570538,
                "count": 3208080,
                "maximum": 25.57357354,
                "minimum": -13.16642646,
                "name": "Z",
                "position": 2,
                "stddev": 1.969439267,
                "variance": 3.878691026
              },
              {
                "average": 30381.26744,
                "count": 3208080,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13482.92126,
                "variance": 181789165.7
              },
              {
                "average": 1.01645439,
                "count": 3208080,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1298367121,
                "variance": 0.01685757181
              },
              {
                "average": 1.032918443,
                "count": 3208080,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1840151828,
                "variance": 0.03386158751
              },
              {
                "average": 0.4994775691,
                "count": 3208080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499999805,
                "variance": 0.249999805
              },
              {
                "average": 0.0004572828608,
                "count": 3208080,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0213792866,
                "variance": 0.0004570738956
              },
              {
                "average": 1.746802761,
                "count": 3208080,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.467816471,
                "variance": 2.154485194
              },
              {
                "average": -0.127114435,
                "count": 3208080,
                "maximum": 16.30200005,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.36031719,
                "variance": 107.3361722
              },
              {
                "average": 0.4747967632,
                "count": 3208080,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993644707,
                "variance": 0.2493648746
              },
              {
                "average": 405.2066738,
                "count": 3208080,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9160922129,
                "variance": 0.8392249426
              },
              {
                "average": 220414597.2,
                "count": 3208080,
                "maximum": 220415596.2,
                "minimum": 220413354.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 516.9136515,
                "variance": 267199.7232
              },
              {
                "average": 0.4747967632,
                "count": 3208080,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993644707,
                "variance": 0.2493648746
              },
              {
                "average": 0,
                "count": 3208080,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3208080,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3208080,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2207840827,
                "count": 3208080,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4147752707,
                "variance": 0.1720385251
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98126.40438,
              2371570.351,
              -13.16642646,
              -97630.42438,
              2372043.971,
              25.57357354
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98126.40438098792,
                    2371570.351263614,
                    -13.166426456910607
                  ],
                  [
                    -98126.40438098792,
                    2372043.971263614,
                    -13.166426456910607
                  ],
                  [
                    -97630.42438098791,
                    2372043.971263614,
                    25.573573543089395
                  ],
                  [
                    -97630.42438098791,
                    2371570.351263614,
                    25.573573543089395
                  ],
                  [
                    -98126.40438098792,
                    2371570.351263614,
                    -13.166426456910607
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:19:56+00:00",
            "end_time": "2018-09-08T03:42:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2346.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65087918493506,
              71.34092401246984,
              0.86404731325012
            ],
            [
              -156.65129991549054,
              71.34446988914627,
              0.86404731325012
            ],
            [
              -156.63786934233835,
              71.34465000211273,
              1.50404731325012
            ],
            [
              -156.63745073856347,
              71.34110409251754,
              1.50404731325012
            ],
            [
              -156.65087918493506,
              71.34092401246984,
              0.86404731325012
            ]
          ]
        ]
      },
      "bbox": [
        -156.6512999,
        71.34092401,
        0.8640473133,
        -156.6374507,
        71.34465,
        1.504047313
      ],
      "properties": {
        "datetime": "2018-09-08T04:00:34Z",
        "pc:count": 907686,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96770.46021,
            "count": 907686,
            "maximum": -96585.19053,
            "minimum": -97077.47053,
            "name": "X",
            "position": 0,
            "stddev": 115.9847137,
            "variance": 13452.45382
          },
          {
            "average": 2373426.812,
            "count": 907686,
            "maximum": 2373679.471,
            "minimum": 2373293.331,
            "name": "Y",
            "position": 1,
            "stddev": 86.13635464,
            "variance": 7419.471591
          },
          {
            "average": 1.143622695,
            "count": 907686,
            "maximum": 1.504047313,
            "minimum": 0.8640473133,
            "name": "Z",
            "position": 2,
            "stddev": 0.06905629851,
            "variance": 0.004768772364
          },
          {
            "average": 14186.89266,
            "count": 907686,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10029.8474,
            "variance": 100597839
          },
          {
            "average": 1,
            "count": 907686,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 907686,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4904614591,
            "count": 907686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999092833,
            "variance": 0.2499092916
          },
          {
            "average": 0.0004781389159,
            "count": 907686,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02186117164,
            "variance": 0.0004779108256
          },
          {
            "average": 7.692893798,
            "count": 907686,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.464019225,
            "variance": 6.07139074
          },
          {
            "average": 4.007633444,
            "count": 907686,
            "maximum": 16.25399971,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.169484491,
            "variance": 38.06253889
          },
          {
            "average": 0.4872268604,
            "count": 907686,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998370956,
            "variance": 0.2498371222
          },
          {
            "average": 403.6753018,
            "count": 907686,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.617633517,
            "variance": 0.3814711613
          },
          {
            "average": 220413738.9,
            "count": 907686,
            "maximum": 220414434.7,
            "minimum": 220412861.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 365.9964768,
            "variance": 133953.421
          },
          {
            "average": 0.4872268604,
            "count": 907686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998370956,
            "variance": 0.2498371222
          },
          {
            "average": 0,
            "count": 907686,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 907686,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 907686,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03690923954,
            "count": 907686,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1885390854,
            "variance": 0.03554698674
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97077.47053,
          2373293.331,
          0.8640473133,
          -96585.19053,
          2373679.471,
          1.504047313
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97077.47052672454,
                2373293.33133764,
                0.86404731325012
              ],
              [
                -97077.47052672454,
                2373679.4713376397,
                0.86404731325012
              ],
              [
                -96585.19052672455,
                2373679.4713376397,
                1.50404731325012
              ],
              [
                -96585.19052672455,
                2373293.33133764,
                1.50404731325012
              ],
              [
                -97077.47052672454,
                2373293.33133764,
                0.86404731325012
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:00:34+00:00",
        "end_time": "2018-09-08T03:34:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2346.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2346.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2346.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2346.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6512999,
            71.34092401,
            0.8640473133,
            -156.6374507,
            71.34465,
            1.504047313
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65087918493506,
                  71.34092401246984,
                  0.86404731325012
                ],
                [
                  -156.65129991549054,
                  71.34446988914627,
                  0.86404731325012
                ],
                [
                  -156.63786934233835,
                  71.34465000211273,
                  1.50404731325012
                ],
                [
                  -156.63745073856347,
                  71.34110409251754,
                  1.50404731325012
                ],
                [
                  -156.65087918493506,
                  71.34092401246984,
                  0.86404731325012
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2346.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2346.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:00:34Z",
            "pc:count": 907686,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96770.46021,
                "count": 907686,
                "maximum": -96585.19053,
                "minimum": -97077.47053,
                "name": "X",
                "position": 0,
                "stddev": 115.9847137,
                "variance": 13452.45382
              },
              {
                "average": 2373426.812,
                "count": 907686,
                "maximum": 2373679.471,
                "minimum": 2373293.331,
                "name": "Y",
                "position": 1,
                "stddev": 86.13635464,
                "variance": 7419.471591
              },
              {
                "average": 1.143622695,
                "count": 907686,
                "maximum": 1.504047313,
                "minimum": 0.8640473133,
                "name": "Z",
                "position": 2,
                "stddev": 0.06905629851,
                "variance": 0.004768772364
              },
              {
                "average": 14186.89266,
                "count": 907686,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10029.8474,
                "variance": 100597839
              },
              {
                "average": 1,
                "count": 907686,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 907686,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4904614591,
                "count": 907686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999092833,
                "variance": 0.2499092916
              },
              {
                "average": 0.0004781389159,
                "count": 907686,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02186117164,
                "variance": 0.0004779108256
              },
              {
                "average": 7.692893798,
                "count": 907686,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.464019225,
                "variance": 6.07139074
              },
              {
                "average": 4.007633444,
                "count": 907686,
                "maximum": 16.25399971,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.169484491,
                "variance": 38.06253889
              },
              {
                "average": 0.4872268604,
                "count": 907686,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998370956,
                "variance": 0.2498371222
              },
              {
                "average": 403.6753018,
                "count": 907686,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.617633517,
                "variance": 0.3814711613
              },
              {
                "average": 220413738.9,
                "count": 907686,
                "maximum": 220414434.7,
                "minimum": 220412861.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 365.9964768,
                "variance": 133953.421
              },
              {
                "average": 0.4872268604,
                "count": 907686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998370956,
                "variance": 0.2498371222
              },
              {
                "average": 0,
                "count": 907686,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 907686,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 907686,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03690923954,
                "count": 907686,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1885390854,
                "variance": 0.03554698674
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97077.47053,
              2373293.331,
              0.8640473133,
              -96585.19053,
              2373679.471,
              1.504047313
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97077.47052672454,
                    2373293.33133764,
                    0.86404731325012
                  ],
                  [
                    -97077.47052672454,
                    2373679.4713376397,
                    0.86404731325012
                  ],
                  [
                    -96585.19052672455,
                    2373679.4713376397,
                    1.50404731325012
                  ],
                  [
                    -96585.19052672455,
                    2373293.33133764,
                    1.50404731325012
                  ],
                  [
                    -97077.47052672454,
                    2373293.33133764,
                    0.86404731325012
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:00:34+00:00",
            "end_time": "2018-09-08T03:34:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2367.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5607023153243,
              71.3484551304751,
              0.792993968517887
            ],
            [
              -156.56120081285346,
              71.35280313933472,
              0.792993968517887
            ],
            [
              -156.54765534217677,
              71.35297853875335,
              14.192993968517888
            ],
            [
              -156.5471594758734,
              71.3486304905674,
              14.192993968517888
            ],
            [
              -156.5607023153243,
              71.3484551304751,
              0.792993968517887
            ]
          ]
        ]
      },
      "bbox": [
        -156.5612008,
        71.34845513,
        0.7929939685,
        -156.5471595,
        71.35297854,
        14.19299397
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:41Z",
        "pc:count": 1621862,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93502.7682,
            "count": 1621862,
            "maximum": -93248.91249,
            "minimum": -93745.19249,
            "name": "X",
            "position": 0,
            "stddev": 138.2624137,
            "variance": 19116.49503
          },
          {
            "average": 2374217.632,
            "count": 1621862,
            "maximum": 2374456.047,
            "minimum": 2373982.607,
            "name": "Y",
            "position": 1,
            "stddev": 131.3296458,
            "variance": 17247.47587
          },
          {
            "average": 1.147251988,
            "count": 1621862,
            "maximum": 14.19299397,
            "minimum": 0.7929939685,
            "name": "Z",
            "position": 2,
            "stddev": 0.3677130373,
            "variance": 0.1352128778
          },
          {
            "average": 16055.54056,
            "count": 1621862,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11726.52375,
            "variance": 137511359.2
          },
          {
            "average": 1,
            "count": 1621862,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1621862,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4940395669,
            "count": 1621862,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999646261,
            "variance": 0.2499646274
          },
          {
            "average": 0.000626440474,
            "count": 1621862,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02502095986,
            "variance": 0.0006260484323
          },
          {
            "average": 7.442356378,
            "count": 1621862,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.724738063,
            "variance": 7.42419751
          },
          {
            "average": 2.51891834,
            "count": 1621862,
            "maximum": 16.31399918,
            "minimum": -15.97200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.531739136,
            "variance": 56.72709441
          },
          {
            "average": 0.4762476709,
            "count": 1621862,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994356622,
            "variance": 0.2494359807
          },
          {
            "average": 407.5642823,
            "count": 1621862,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7376643825,
            "variance": 0.5441487412
          },
          {
            "average": 220415928.4,
            "count": 1621862,
            "maximum": 220416661.6,
            "minimum": 220415135.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 453.3257581,
            "variance": 205504.2429
          },
          {
            "average": 0.4762476709,
            "count": 1621862,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994356622,
            "variance": 0.2494359807
          },
          {
            "average": 0,
            "count": 1621862,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1621862,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1621862,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07215780381,
            "count": 1621862,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2587490994,
            "variance": 0.06695109644
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93745.19249,
          2373982.607,
          0.7929939685,
          -93248.91249,
          2374456.047,
          14.19299397
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93745.19249430421,
                2373982.607179571,
                0.792993968517887
              ],
              [
                -93745.19249430421,
                2374456.0471795714,
                0.792993968517887
              ],
              [
                -93248.91249430421,
                2374456.0471795714,
                14.192993968517888
              ],
              [
                -93248.91249430421,
                2373982.607179571,
                14.192993968517888
              ],
              [
                -93745.19249430421,
                2373982.607179571,
                0.792993968517887
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:41+00:00",
        "end_time": "2018-09-08T04:12:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2367.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2367.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2367.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2367.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5612008,
            71.34845513,
            0.7929939685,
            -156.5471595,
            71.35297854,
            14.19299397
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5607023153243,
                  71.3484551304751,
                  0.792993968517887
                ],
                [
                  -156.56120081285346,
                  71.35280313933472,
                  0.792993968517887
                ],
                [
                  -156.54765534217677,
                  71.35297853875335,
                  14.192993968517888
                ],
                [
                  -156.5471594758734,
                  71.3486304905674,
                  14.192993968517888
                ],
                [
                  -156.5607023153243,
                  71.3484551304751,
                  0.792993968517887
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2367.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2367.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:41Z",
            "pc:count": 1621862,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93502.7682,
                "count": 1621862,
                "maximum": -93248.91249,
                "minimum": -93745.19249,
                "name": "X",
                "position": 0,
                "stddev": 138.2624137,
                "variance": 19116.49503
              },
              {
                "average": 2374217.632,
                "count": 1621862,
                "maximum": 2374456.047,
                "minimum": 2373982.607,
                "name": "Y",
                "position": 1,
                "stddev": 131.3296458,
                "variance": 17247.47587
              },
              {
                "average": 1.147251988,
                "count": 1621862,
                "maximum": 14.19299397,
                "minimum": 0.7929939685,
                "name": "Z",
                "position": 2,
                "stddev": 0.3677130373,
                "variance": 0.1352128778
              },
              {
                "average": 16055.54056,
                "count": 1621862,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11726.52375,
                "variance": 137511359.2
              },
              {
                "average": 1,
                "count": 1621862,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1621862,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4940395669,
                "count": 1621862,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999646261,
                "variance": 0.2499646274
              },
              {
                "average": 0.000626440474,
                "count": 1621862,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02502095986,
                "variance": 0.0006260484323
              },
              {
                "average": 7.442356378,
                "count": 1621862,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.724738063,
                "variance": 7.42419751
              },
              {
                "average": 2.51891834,
                "count": 1621862,
                "maximum": 16.31399918,
                "minimum": -15.97200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.531739136,
                "variance": 56.72709441
              },
              {
                "average": 0.4762476709,
                "count": 1621862,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994356622,
                "variance": 0.2494359807
              },
              {
                "average": 407.5642823,
                "count": 1621862,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7376643825,
                "variance": 0.5441487412
              },
              {
                "average": 220415928.4,
                "count": 1621862,
                "maximum": 220416661.6,
                "minimum": 220415135.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 453.3257581,
                "variance": 205504.2429
              },
              {
                "average": 0.4762476709,
                "count": 1621862,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994356622,
                "variance": 0.2494359807
              },
              {
                "average": 0,
                "count": 1621862,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1621862,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1621862,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07215780381,
                "count": 1621862,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2587490994,
                "variance": 0.06695109644
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93745.19249,
              2373982.607,
              0.7929939685,
              -93248.91249,
              2374456.047,
              14.19299397
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93745.19249430421,
                    2373982.607179571,
                    0.792993968517887
                  ],
                  [
                    -93745.19249430421,
                    2374456.0471795714,
                    0.792993968517887
                  ],
                  [
                    -93248.91249430421,
                    2374456.0471795714,
                    14.192993968517888
                  ],
                  [
                    -93248.91249430421,
                    2373982.607179571,
                    14.192993968517888
                  ],
                  [
                    -93745.19249430421,
                    2373982.607179571,
                    0.792993968517887
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:41+00:00",
            "end_time": "2018-09-08T04:12:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2273.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65259305901523,
              71.3163423455858,
              2.878086493186211
            ],
            [
              -156.6531088253893,
              71.3206902699511,
              2.878086493186211
            ],
            [
              -156.63959115694442,
              71.32087183567904,
              7.198086493186211
            ],
            [
              -156.63907801286524,
              71.31652387068112,
              7.198086493186211
            ],
            [
              -156.65259305901523,
              71.3163423455858,
              2.878086493186211
            ]
          ]
        ]
      },
      "bbox": [
        -156.6531088,
        71.31634235,
        2.878086493,
        -156.639078,
        71.32087184,
        7.198086493
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:39Z",
        "pc:count": 3191291,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96996.37425,
            "count": 3191291,
            "maximum": -96751.01827,
            "minimum": -97247.01827,
            "name": "X",
            "position": 0,
            "stddev": 134.2355532,
            "variance": 18019.18376
          },
          {
            "average": 2370860.071,
            "count": 3191291,
            "maximum": 2371096.505,
            "minimum": 2370622.945,
            "name": "Y",
            "position": 1,
            "stddev": 127.5004048,
            "variance": 16256.35323
          },
          {
            "average": 4.205456454,
            "count": 3191291,
            "maximum": 7.198086493,
            "minimum": 2.878086493,
            "name": "Z",
            "position": 2,
            "stddev": 0.663983506,
            "variance": 0.4408740963
          },
          {
            "average": 43083.52816,
            "count": 3191291,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10343.54847,
            "variance": 106988995
          },
          {
            "average": 1,
            "count": 3191291,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3191291,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5015891688,
            "count": 3191291,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999975529,
            "variance": 0.2499975529
          },
          {
            "average": 0.0004365004633,
            "count": 3191291,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02088803646,
            "variance": 0.0004363100674
          },
          {
            "average": 1.300199512,
            "count": 3191291,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4584779584,
            "variance": 0.2102020384
          },
          {
            "average": 1.393487711,
            "count": 3191291,
            "maximum": 16.39800072,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5151954,
            "variance": 110.5693344
          },
          {
            "average": 0.5276742234,
            "count": 3191291,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992336281,
            "variance": 0.2492342155
          },
          {
            "average": 408.794235,
            "count": 3191291,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9550122903,
            "variance": 0.9120484746
          },
          {
            "average": 220416626.9,
            "count": 3191291,
            "maximum": 220417859.4,
            "minimum": 220415587.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 545.8520223,
            "variance": 297954.4302
          },
          {
            "average": 0.5276742234,
            "count": 3191291,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992336281,
            "variance": 0.2492342155
          },
          {
            "average": 0,
            "count": 3191291,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191291,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3191291,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2606891694,
            "count": 3191291,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4390106909,
            "variance": 0.1927303867
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97247.01827,
          2370622.945,
          2.878086493,
          -96751.01827,
          2371096.505,
          7.198086493
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97247.01826617574,
                2370622.945494223,
                2.878086493186211
              ],
              [
                -97247.01826617574,
                2371096.5054942225,
                2.878086493186211
              ],
              [
                -96751.01826617574,
                2371096.5054942225,
                7.198086493186211
              ],
              [
                -96751.01826617574,
                2370622.945494223,
                7.198086493186211
              ],
              [
                -97247.01826617574,
                2370622.945494223,
                2.878086493186211
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:39+00:00",
        "end_time": "2018-09-08T04:19:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2273.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2273.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2273.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2273.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6531088,
            71.31634235,
            2.878086493,
            -156.639078,
            71.32087184,
            7.198086493
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65259305901523,
                  71.3163423455858,
                  2.878086493186211
                ],
                [
                  -156.6531088253893,
                  71.3206902699511,
                  2.878086493186211
                ],
                [
                  -156.63959115694442,
                  71.32087183567904,
                  7.198086493186211
                ],
                [
                  -156.63907801286524,
                  71.31652387068112,
                  7.198086493186211
                ],
                [
                  -156.65259305901523,
                  71.3163423455858,
                  2.878086493186211
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2273.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2273.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:39Z",
            "pc:count": 3191291,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96996.37425,
                "count": 3191291,
                "maximum": -96751.01827,
                "minimum": -97247.01827,
                "name": "X",
                "position": 0,
                "stddev": 134.2355532,
                "variance": 18019.18376
              },
              {
                "average": 2370860.071,
                "count": 3191291,
                "maximum": 2371096.505,
                "minimum": 2370622.945,
                "name": "Y",
                "position": 1,
                "stddev": 127.5004048,
                "variance": 16256.35323
              },
              {
                "average": 4.205456454,
                "count": 3191291,
                "maximum": 7.198086493,
                "minimum": 2.878086493,
                "name": "Z",
                "position": 2,
                "stddev": 0.663983506,
                "variance": 0.4408740963
              },
              {
                "average": 43083.52816,
                "count": 3191291,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10343.54847,
                "variance": 106988995
              },
              {
                "average": 1,
                "count": 3191291,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3191291,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5015891688,
                "count": 3191291,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999975529,
                "variance": 0.2499975529
              },
              {
                "average": 0.0004365004633,
                "count": 3191291,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02088803646,
                "variance": 0.0004363100674
              },
              {
                "average": 1.300199512,
                "count": 3191291,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4584779584,
                "variance": 0.2102020384
              },
              {
                "average": 1.393487711,
                "count": 3191291,
                "maximum": 16.39800072,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5151954,
                "variance": 110.5693344
              },
              {
                "average": 0.5276742234,
                "count": 3191291,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992336281,
                "variance": 0.2492342155
              },
              {
                "average": 408.794235,
                "count": 3191291,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9550122903,
                "variance": 0.9120484746
              },
              {
                "average": 220416626.9,
                "count": 3191291,
                "maximum": 220417859.4,
                "minimum": 220415587.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 545.8520223,
                "variance": 297954.4302
              },
              {
                "average": 0.5276742234,
                "count": 3191291,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992336281,
                "variance": 0.2492342155
              },
              {
                "average": 0,
                "count": 3191291,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191291,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3191291,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2606891694,
                "count": 3191291,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4390106909,
                "variance": 0.1927303867
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97247.01827,
              2370622.945,
              2.878086493,
              -96751.01827,
              2371096.505,
              7.198086493
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97247.01826617574,
                    2370622.945494223,
                    2.878086493186211
                  ],
                  [
                    -97247.01826617574,
                    2371096.5054942225,
                    2.878086493186211
                  ],
                  [
                    -96751.01826617574,
                    2371096.5054942225,
                    7.198086493186211
                  ],
                  [
                    -96751.01826617574,
                    2370622.945494223,
                    7.198086493186211
                  ],
                  [
                    -97247.01826617574,
                    2370622.945494223,
                    2.878086493186211
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:39+00:00",
            "end_time": "2018-09-08T04:19:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2253.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71676464021766,
              71.31269088018463,
              -17.327550256214984
            ],
            [
              -156.71729283555877,
              71.31703889415826,
              -17.327550256214984
            ],
            [
              -156.70378280329913,
              71.31722478929734,
              17.932449743785014
            ],
            [
              -156.70325722825842,
              71.3128767337302,
              17.932449743785014
            ],
            [
              -156.71676464021766,
              71.31269088018463,
              -17.327550256214984
            ]
          ]
        ]
      },
      "bbox": [
        -156.7172928,
        71.31269088,
        -17.32755026,
        -156.7032572,
        71.31722479,
        17.93244974
      ],
      "properties": {
        "datetime": "2018-09-08T04:20:29Z",
        "pc:count": 2638678,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99378.56127,
            "count": 2638678,
            "maximum": -99118.75532,
            "minimum": -99614.57532,
            "name": "X",
            "position": 0,
            "stddev": 133.0806371,
            "variance": 17710.45597
          },
          {
            "average": 2370564.86,
            "count": 2638678,
            "maximum": 2370794.584,
            "minimum": 2370320.984,
            "name": "Y",
            "position": 1,
            "stddev": 129.4864795,
            "variance": 16766.74836
          },
          {
            "average": 3.035293891,
            "count": 2638678,
            "maximum": 17.93244974,
            "minimum": -17.32755026,
            "name": "Z",
            "position": 2,
            "stddev": 1.146837747,
            "variance": 1.315236819
          },
          {
            "average": 35061.89686,
            "count": 2638678,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14244.0716,
            "variance": 202893575.7
          },
          {
            "average": 1.005724457,
            "count": 2638678,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07582410463,
            "variance": 0.005749294844
          },
          {
            "average": 1.011454221,
            "count": 2638678,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1072186534,
            "variance": 0.01149583963
          },
          {
            "average": 0.4975840175,
            "count": 2638678,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999942577,
            "variance": 0.2499942578
          },
          {
            "average": 0.0004180123532,
            "count": 2638678,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02044108063,
            "variance": 0.0004178377772
          },
          {
            "average": 2.470393508,
            "count": 2638678,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.751352258,
            "variance": 7.569939247
          },
          {
            "average": 0.6124593595,
            "count": 2638678,
            "maximum": 16.27799988,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.05093284,
            "variance": 101.021251
          },
          {
            "average": 0.468606628,
            "count": 2638678,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990135775,
            "variance": 0.2490145506
          },
          {
            "average": 405.3609349,
            "count": 2638678,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9070219042,
            "variance": 0.8226887347
          },
          {
            "average": 220414676.9,
            "count": 2638678,
            "maximum": 220415629.4,
            "minimum": 220413886.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.527847,
            "variance": 264738.9053
          },
          {
            "average": 0.468606628,
            "count": 2638678,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990135775,
            "variance": 0.2490145506
          },
          {
            "average": 0,
            "count": 2638678,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2638678,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2638678,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1933695585,
            "count": 2638678,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3949402885,
            "variance": 0.1559778315
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99614.57532,
          2370320.984,
          -17.32755026,
          -99118.75532,
          2370794.584,
          17.93244974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99614.57531679314,
                2370320.98393951,
                -17.327550256214984
              ],
              [
                -99614.57531679314,
                2370794.5839395095,
                -17.327550256214984
              ],
              [
                -99118.75531679313,
                2370794.5839395095,
                17.932449743785014
              ],
              [
                -99118.75531679313,
                2370320.98393951,
                17.932449743785014
              ],
              [
                -99614.57531679314,
                2370320.98393951,
                -17.327550256214984
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:20:29+00:00",
        "end_time": "2018-09-08T03:51:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2253.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2253.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2253.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2253.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7172928,
            71.31269088,
            -17.32755026,
            -156.7032572,
            71.31722479,
            17.93244974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71676464021766,
                  71.31269088018463,
                  -17.327550256214984
                ],
                [
                  -156.71729283555877,
                  71.31703889415826,
                  -17.327550256214984
                ],
                [
                  -156.70378280329913,
                  71.31722478929734,
                  17.932449743785014
                ],
                [
                  -156.70325722825842,
                  71.3128767337302,
                  17.932449743785014
                ],
                [
                  -156.71676464021766,
                  71.31269088018463,
                  -17.327550256214984
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2253.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2253.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:20:29Z",
            "pc:count": 2638678,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99378.56127,
                "count": 2638678,
                "maximum": -99118.75532,
                "minimum": -99614.57532,
                "name": "X",
                "position": 0,
                "stddev": 133.0806371,
                "variance": 17710.45597
              },
              {
                "average": 2370564.86,
                "count": 2638678,
                "maximum": 2370794.584,
                "minimum": 2370320.984,
                "name": "Y",
                "position": 1,
                "stddev": 129.4864795,
                "variance": 16766.74836
              },
              {
                "average": 3.035293891,
                "count": 2638678,
                "maximum": 17.93244974,
                "minimum": -17.32755026,
                "name": "Z",
                "position": 2,
                "stddev": 1.146837747,
                "variance": 1.315236819
              },
              {
                "average": 35061.89686,
                "count": 2638678,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14244.0716,
                "variance": 202893575.7
              },
              {
                "average": 1.005724457,
                "count": 2638678,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07582410463,
                "variance": 0.005749294844
              },
              {
                "average": 1.011454221,
                "count": 2638678,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1072186534,
                "variance": 0.01149583963
              },
              {
                "average": 0.4975840175,
                "count": 2638678,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999942577,
                "variance": 0.2499942578
              },
              {
                "average": 0.0004180123532,
                "count": 2638678,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02044108063,
                "variance": 0.0004178377772
              },
              {
                "average": 2.470393508,
                "count": 2638678,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.751352258,
                "variance": 7.569939247
              },
              {
                "average": 0.6124593595,
                "count": 2638678,
                "maximum": 16.27799988,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.05093284,
                "variance": 101.021251
              },
              {
                "average": 0.468606628,
                "count": 2638678,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990135775,
                "variance": 0.2490145506
              },
              {
                "average": 405.3609349,
                "count": 2638678,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9070219042,
                "variance": 0.8226887347
              },
              {
                "average": 220414676.9,
                "count": 2638678,
                "maximum": 220415629.4,
                "minimum": 220413886.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.527847,
                "variance": 264738.9053
              },
              {
                "average": 0.468606628,
                "count": 2638678,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990135775,
                "variance": 0.2490145506
              },
              {
                "average": 0,
                "count": 2638678,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2638678,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2638678,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1933695585,
                "count": 2638678,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3949402885,
                "variance": 0.1559778315
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99614.57532,
              2370320.984,
              -17.32755026,
              -99118.75532,
              2370794.584,
              17.93244974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99614.57531679314,
                    2370320.98393951,
                    -17.327550256214984
                  ],
                  [
                    -99614.57531679314,
                    2370794.5839395095,
                    -17.327550256214984
                  ],
                  [
                    -99118.75531679313,
                    2370794.5839395095,
                    17.932449743785014
                  ],
                  [
                    -99118.75531679313,
                    2370320.98393951,
                    17.932449743785014
                  ],
                  [
                    -99614.57531679314,
                    2370320.98393951,
                    -17.327550256214984
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:20:29+00:00",
            "end_time": "2018-09-08T03:51:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2383.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.54728544387137,
              71.35655097382006,
              0.819132920722838
            ],
            [
              -156.5477757884682,
              71.36084910914447,
              0.819132920722838
            ],
            [
              -156.534225880231,
              71.36102358959562,
              10.199132920722839
            ],
            [
              -156.53373813837047,
              71.35672541558147,
              10.199132920722839
            ],
            [
              -156.54728544387137,
              71.35655097382006,
              0.819132920722838
            ]
          ]
        ]
      },
      "bbox": [
        -156.5477758,
        71.35655097,
        0.8191329207,
        -156.5337381,
        71.36102359,
        10.19913292
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:25Z",
        "pc:count": 1897706,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92959.86089,
            "count": 1897706,
            "maximum": -92724.21509,
            "minimum": -93220.47509,
            "name": "X",
            "position": 0,
            "stddev": 135.5036722,
            "variance": 18361.24517
          },
          {
            "average": 2375065.069,
            "count": 1897706,
            "maximum": 2375311.912,
            "minimum": 2374843.932,
            "name": "Y",
            "position": 1,
            "stddev": 130.6921192,
            "variance": 17080.43003
          },
          {
            "average": 1.498469135,
            "count": 1897706,
            "maximum": 10.19913292,
            "minimum": 0.8191329207,
            "name": "Z",
            "position": 2,
            "stddev": 0.7409261572,
            "variance": 0.5489715704
          },
          {
            "average": 14946.31475,
            "count": 1897706,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9942.24015,
            "variance": 98848139.2
          },
          {
            "average": 1.00001212,
            "count": 1897706,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003481343969,
            "variance": 1.211975583e-05
          },
          {
            "average": 1.00002424,
            "count": 1897706,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004923334021,
            "variance": 2.423921788e-05
          },
          {
            "average": 0.5080133593,
            "count": 1897706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999359137,
            "variance": 0.2499359178
          },
          {
            "average": 0.0005838628323,
            "count": 1897706,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02415620508,
            "variance": 0.000583522244
          },
          {
            "average": 6.418289767,
            "count": 1897706,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.385444687,
            "variance": 11.46123573
          },
          {
            "average": -2.913502431,
            "count": 1897706,
            "maximum": 16.33200073,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.704424972,
            "variance": 59.35816415
          },
          {
            "average": 0.4900216366,
            "count": 1897706,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999005541,
            "variance": 0.249900564
          },
          {
            "average": 406.6009292,
            "count": 1897706,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7258469648,
            "variance": 0.5268538163
          },
          {
            "average": 220415389.9,
            "count": 1897706,
            "maximum": 220416285.5,
            "minimum": 220414357.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 388.9576709,
            "variance": 151288.0697
          },
          {
            "average": 0.4900216366,
            "count": 1897706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999005541,
            "variance": 0.249900564
          },
          {
            "average": 0,
            "count": 1897706,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1897706,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1897706,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09738758269,
            "count": 1897706,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2964848862,
            "variance": 0.08790328775
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93220.47509,
          2374843.932,
          0.8191329207,
          -92724.21509,
          2375311.912,
          10.19913292
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93220.47508888034,
                2374843.932176703,
                0.819132920722838
              ],
              [
                -93220.47508888034,
                2375311.9121767036,
                0.819132920722838
              ],
              [
                -92724.21508888033,
                2375311.9121767036,
                10.199132920722839
              ],
              [
                -92724.21508888033,
                2374843.932176703,
                10.199132920722839
              ],
              [
                -93220.47508888034,
                2374843.932176703,
                0.819132920722838
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:25+00:00",
        "end_time": "2018-09-08T03:59:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2383.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2383.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2383.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2383.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5477758,
            71.35655097,
            0.8191329207,
            -156.5337381,
            71.36102359,
            10.19913292
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.54728544387137,
                  71.35655097382006,
                  0.819132920722838
                ],
                [
                  -156.5477757884682,
                  71.36084910914447,
                  0.819132920722838
                ],
                [
                  -156.534225880231,
                  71.36102358959562,
                  10.199132920722839
                ],
                [
                  -156.53373813837047,
                  71.35672541558147,
                  10.199132920722839
                ],
                [
                  -156.54728544387137,
                  71.35655097382006,
                  0.819132920722838
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2383.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2383.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:25Z",
            "pc:count": 1897706,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92959.86089,
                "count": 1897706,
                "maximum": -92724.21509,
                "minimum": -93220.47509,
                "name": "X",
                "position": 0,
                "stddev": 135.5036722,
                "variance": 18361.24517
              },
              {
                "average": 2375065.069,
                "count": 1897706,
                "maximum": 2375311.912,
                "minimum": 2374843.932,
                "name": "Y",
                "position": 1,
                "stddev": 130.6921192,
                "variance": 17080.43003
              },
              {
                "average": 1.498469135,
                "count": 1897706,
                "maximum": 10.19913292,
                "minimum": 0.8191329207,
                "name": "Z",
                "position": 2,
                "stddev": 0.7409261572,
                "variance": 0.5489715704
              },
              {
                "average": 14946.31475,
                "count": 1897706,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9942.24015,
                "variance": 98848139.2
              },
              {
                "average": 1.00001212,
                "count": 1897706,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003481343969,
                "variance": 1.211975583e-05
              },
              {
                "average": 1.00002424,
                "count": 1897706,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004923334021,
                "variance": 2.423921788e-05
              },
              {
                "average": 0.5080133593,
                "count": 1897706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999359137,
                "variance": 0.2499359178
              },
              {
                "average": 0.0005838628323,
                "count": 1897706,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02415620508,
                "variance": 0.000583522244
              },
              {
                "average": 6.418289767,
                "count": 1897706,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.385444687,
                "variance": 11.46123573
              },
              {
                "average": -2.913502431,
                "count": 1897706,
                "maximum": 16.33200073,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.704424972,
                "variance": 59.35816415
              },
              {
                "average": 0.4900216366,
                "count": 1897706,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999005541,
                "variance": 0.249900564
              },
              {
                "average": 406.6009292,
                "count": 1897706,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7258469648,
                "variance": 0.5268538163
              },
              {
                "average": 220415389.9,
                "count": 1897706,
                "maximum": 220416285.5,
                "minimum": 220414357.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 388.9576709,
                "variance": 151288.0697
              },
              {
                "average": 0.4900216366,
                "count": 1897706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999005541,
                "variance": 0.249900564
              },
              {
                "average": 0,
                "count": 1897706,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1897706,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1897706,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09738758269,
                "count": 1897706,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2964848862,
                "variance": 0.08790328775
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93220.47509,
              2374843.932,
              0.8191329207,
              -92724.21509,
              2375311.912,
              10.19913292
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93220.47508888034,
                    2374843.932176703,
                    0.819132920722838
                  ],
                  [
                    -93220.47508888034,
                    2375311.9121767036,
                    0.819132920722838
                  ],
                  [
                    -92724.21508888033,
                    2375311.9121767036,
                    10.199132920722839
                  ],
                  [
                    -92724.21508888033,
                    2374843.932176703,
                    10.199132920722839
                  ],
                  [
                    -93220.47508888034,
                    2374843.932176703,
                    0.819132920722838
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:25+00:00",
            "end_time": "2018-09-08T03:59:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2191.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.79095699295394,
              71.30095182414219,
              0.873588490514575
            ],
            [
              -156.79135249524379,
              71.30412245149962,
              0.873588490514575
            ],
            [
              -156.78126892115466,
              71.30426515245394,
              49.47358849051457
            ],
            [
              -156.7808748442423,
              71.30109450182944,
              49.47358849051457
            ],
            [
              -156.79095699295394,
              71.30095182414219,
              0.873588490514575
            ]
          ]
        ]
      },
      "bbox": [
        -156.7913525,
        71.30095182,
        0.8735884905,
        -156.7808748,
        71.30426515,
        49.47358849
      ],
      "properties": {
        "datetime": "2018-09-08T04:02:28Z",
        "pc:count": 523321,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -102152.9524,
            "count": 523321,
            "maximum": -102016.756,
            "minimum": -102387.056,
            "name": "X",
            "position": 0,
            "stddev": 87.80234998,
            "variance": 7709.252662
          },
          {
            "average": 2369275.619,
            "count": 523321,
            "maximum": 2369502.661,
            "minimum": 2369157.261,
            "name": "Y",
            "position": 1,
            "stddev": 78.32402496,
            "variance": 6134.652885
          },
          {
            "average": 1.150297566,
            "count": 523321,
            "maximum": 49.47358849,
            "minimum": 0.8735884905,
            "name": "Z",
            "position": 2,
            "stddev": 0.1680091876,
            "variance": 0.02822708713
          },
          {
            "average": 13536.64444,
            "count": 523321,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9630.666167,
            "variance": 92749730.82
          },
          {
            "average": 1.000026752,
            "count": 523321,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005172190857,
            "variance": 2.675155826e-05
          },
          {
            "average": 1.000053504,
            "count": 523321,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007314484613,
            "variance": 5.350168516e-05
          },
          {
            "average": 0.4897166366,
            "count": 523321,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998947189,
            "variance": 0.24989473
          },
          {
            "average": 0.000682181682,
            "count": 523321,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02610972257,
            "variance": 0.0006817176128
          },
          {
            "average": 7.661051248,
            "count": 523321,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.471668793,
            "variance": 6.10914662
          },
          {
            "average": 4.387792911,
            "count": 523321,
            "maximum": 12.04199982,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.288089378,
            "variance": 39.54006802
          },
          {
            "average": 0.4842649158,
            "count": 523321,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997528233,
            "variance": 0.2497528844
          },
          {
            "average": 403.4336554,
            "count": 523321,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.640595272,
            "variance": 0.4103623025
          },
          {
            "average": 220413594.8,
            "count": 523321,
            "maximum": 220414548.4,
            "minimum": 220412749.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 317.2862906,
            "variance": 100670.5902
          },
          {
            "average": 0.4842649158,
            "count": 523321,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997528233,
            "variance": 0.2497528844
          },
          {
            "average": 0,
            "count": 523321,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 523321,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 523321,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06619264276,
            "count": 523321,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2486187743,
            "variance": 0.06181129491
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -102387.056,
          2369157.261,
          0.8735884905,
          -102016.756,
          2369502.661,
          49.47358849
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -102387.05599977524,
                2369157.2607338093,
                0.873588490514575
              ],
              [
                -102387.05599977524,
                2369502.6607338097,
                0.873588490514575
              ],
              [
                -102016.75599977525,
                2369502.6607338097,
                49.47358849051457
              ],
              [
                -102016.75599977525,
                2369157.2607338093,
                49.47358849051457
              ],
              [
                -102387.05599977524,
                2369157.2607338093,
                0.873588490514575
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:02:28+00:00",
        "end_time": "2018-09-08T03:32:29+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2191.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2191.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2191.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2191.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7913525,
            71.30095182,
            0.8735884905,
            -156.7808748,
            71.30426515,
            49.47358849
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.79095699295394,
                  71.30095182414219,
                  0.873588490514575
                ],
                [
                  -156.79135249524379,
                  71.30412245149962,
                  0.873588490514575
                ],
                [
                  -156.78126892115466,
                  71.30426515245394,
                  49.47358849051457
                ],
                [
                  -156.7808748442423,
                  71.30109450182944,
                  49.47358849051457
                ],
                [
                  -156.79095699295394,
                  71.30095182414219,
                  0.873588490514575
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2191.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2191.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:02:28Z",
            "pc:count": 523321,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -102152.9524,
                "count": 523321,
                "maximum": -102016.756,
                "minimum": -102387.056,
                "name": "X",
                "position": 0,
                "stddev": 87.80234998,
                "variance": 7709.252662
              },
              {
                "average": 2369275.619,
                "count": 523321,
                "maximum": 2369502.661,
                "minimum": 2369157.261,
                "name": "Y",
                "position": 1,
                "stddev": 78.32402496,
                "variance": 6134.652885
              },
              {
                "average": 1.150297566,
                "count": 523321,
                "maximum": 49.47358849,
                "minimum": 0.8735884905,
                "name": "Z",
                "position": 2,
                "stddev": 0.1680091876,
                "variance": 0.02822708713
              },
              {
                "average": 13536.64444,
                "count": 523321,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9630.666167,
                "variance": 92749730.82
              },
              {
                "average": 1.000026752,
                "count": 523321,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005172190857,
                "variance": 2.675155826e-05
              },
              {
                "average": 1.000053504,
                "count": 523321,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007314484613,
                "variance": 5.350168516e-05
              },
              {
                "average": 0.4897166366,
                "count": 523321,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998947189,
                "variance": 0.24989473
              },
              {
                "average": 0.000682181682,
                "count": 523321,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02610972257,
                "variance": 0.0006817176128
              },
              {
                "average": 7.661051248,
                "count": 523321,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.471668793,
                "variance": 6.10914662
              },
              {
                "average": 4.387792911,
                "count": 523321,
                "maximum": 12.04199982,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.288089378,
                "variance": 39.54006802
              },
              {
                "average": 0.4842649158,
                "count": 523321,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997528233,
                "variance": 0.2497528844
              },
              {
                "average": 403.4336554,
                "count": 523321,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.640595272,
                "variance": 0.4103623025
              },
              {
                "average": 220413594.8,
                "count": 523321,
                "maximum": 220414548.4,
                "minimum": 220412749.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 317.2862906,
                "variance": 100670.5902
              },
              {
                "average": 0.4842649158,
                "count": 523321,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997528233,
                "variance": 0.2497528844
              },
              {
                "average": 0,
                "count": 523321,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 523321,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 523321,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06619264276,
                "count": 523321,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2486187743,
                "variance": 0.06181129491
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -102387.056,
              2369157.261,
              0.8735884905,
              -102016.756,
              2369502.661,
              49.47358849
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -102387.05599977524,
                    2369157.2607338093,
                    0.873588490514575
                  ],
                  [
                    -102387.05599977524,
                    2369502.6607338097,
                    0.873588490514575
                  ],
                  [
                    -102016.75599977525,
                    2369502.6607338097,
                    49.47358849051457
                  ],
                  [
                    -102016.75599977525,
                    2369157.2607338093,
                    49.47358849051457
                  ],
                  [
                    -102387.05599977524,
                    2369157.2607338093,
                    0.873588490514575
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:02:28+00:00",
            "end_time": "2018-09-08T03:32:29+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2228.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57681561211143,
              71.3034880415258,
              0.94443184870875
            ],
            [
              -156.57731649113376,
              71.30783688439377,
              0.94443184870875
            ],
            [
              -156.56380652479092,
              71.30801323043877,
              5.22443184870875
            ],
            [
              -156.5633082660813,
              71.30366434812727,
              5.22443184870875
            ],
            [
              -156.57681561211143,
              71.3034880415258,
              0.94443184870875
            ]
          ]
        ]
      },
      "bbox": [
        -156.5773165,
        71.30348804,
        0.9444318487,
        -156.5633083,
        71.30801323,
        5.224431849
      ],
      "properties": {
        "datetime": "2018-09-11T17:40:40Z",
        "pc:count": 3431276,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94242.47043,
            "count": 3431276,
            "maximum": -94028.63672,
            "minimum": -94524.61672,
            "name": "X",
            "position": 0,
            "stddev": 122.3523475,
            "variance": 14970.09694
          },
          {
            "average": 2369328.863,
            "count": 3431276,
            "maximum": 2369589.292,
            "minimum": 2369115.612,
            "name": "Y",
            "position": 1,
            "stddev": 125.0218128,
            "variance": 15630.45369
          },
          {
            "average": 3.253676168,
            "count": 3431276,
            "maximum": 5.224431849,
            "minimum": 0.9444318487,
            "name": "Z",
            "position": 2,
            "stddev": 0.7814888984,
            "variance": 0.6107248983
          },
          {
            "average": 40166.22326,
            "count": 3431276,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 14040.56563,
            "variance": 197137483.1
          },
          {
            "average": 1,
            "count": 3431276,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3431276,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5074281404,
            "count": 3431276,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999448925,
            "variance": 0.2499448956
          },
          {
            "average": 0.0004712532597,
            "count": 3431276,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02170325592,
            "variance": 0.0004710313174
          },
          {
            "average": 1.510647642,
            "count": 3431276,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.545756681,
            "variance": 2.389363717
          },
          {
            "average": -1.592635599,
            "count": 3431276,
            "maximum": 16.40999985,
            "minimum": -19.46999931,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.69724905,
            "variance": 114.4311373
          },
          {
            "average": 0.5301549628,
            "count": 3431276,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990899226,
            "variance": 0.2490907508
          },
          {
            "average": 426.2581754,
            "count": 3431276,
            "maximum": 455,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.37442436,
            "variance": 268.1217731
          },
          {
            "average": 220497548.2,
            "count": 3431276,
            "maximum": 220722840.5,
            "minimum": 220420005.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 131269.958,
            "variance": 17231801880.0
          },
          {
            "average": 0.5301549628,
            "count": 3431276,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990899226,
            "variance": 0.2490907508
          },
          {
            "average": 0,
            "count": 3431276,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3431276,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3431276,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2296207009,
            "count": 3431276,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4205889753,
            "variance": 0.1768950862
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94524.61672,
          2369115.612,
          0.9444318487,
          -94028.63672,
          2369589.292,
          5.224431849
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94524.616717804,
                2369115.6117764665,
                0.94443184870875
              ],
              [
                -94524.616717804,
                2369589.291776466,
                0.94443184870875
              ],
              [
                -94028.636717804,
                2369589.291776466,
                5.22443184870875
              ],
              [
                -94028.636717804,
                2369115.6117764665,
                5.22443184870875
              ],
              [
                -94524.616717804,
                2369115.6117764665,
                0.94443184870875
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:40:40+00:00",
        "end_time": "2018-09-08T05:33:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2228.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2228.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2228.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2228.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5773165,
            71.30348804,
            0.9444318487,
            -156.5633083,
            71.30801323,
            5.224431849
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57681561211143,
                  71.3034880415258,
                  0.94443184870875
                ],
                [
                  -156.57731649113376,
                  71.30783688439377,
                  0.94443184870875
                ],
                [
                  -156.56380652479092,
                  71.30801323043877,
                  5.22443184870875
                ],
                [
                  -156.5633082660813,
                  71.30366434812727,
                  5.22443184870875
                ],
                [
                  -156.57681561211143,
                  71.3034880415258,
                  0.94443184870875
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2228.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2228.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:40:40Z",
            "pc:count": 3431276,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94242.47043,
                "count": 3431276,
                "maximum": -94028.63672,
                "minimum": -94524.61672,
                "name": "X",
                "position": 0,
                "stddev": 122.3523475,
                "variance": 14970.09694
              },
              {
                "average": 2369328.863,
                "count": 3431276,
                "maximum": 2369589.292,
                "minimum": 2369115.612,
                "name": "Y",
                "position": 1,
                "stddev": 125.0218128,
                "variance": 15630.45369
              },
              {
                "average": 3.253676168,
                "count": 3431276,
                "maximum": 5.224431849,
                "minimum": 0.9444318487,
                "name": "Z",
                "position": 2,
                "stddev": 0.7814888984,
                "variance": 0.6107248983
              },
              {
                "average": 40166.22326,
                "count": 3431276,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 14040.56563,
                "variance": 197137483.1
              },
              {
                "average": 1,
                "count": 3431276,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3431276,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5074281404,
                "count": 3431276,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999448925,
                "variance": 0.2499448956
              },
              {
                "average": 0.0004712532597,
                "count": 3431276,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02170325592,
                "variance": 0.0004710313174
              },
              {
                "average": 1.510647642,
                "count": 3431276,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.545756681,
                "variance": 2.389363717
              },
              {
                "average": -1.592635599,
                "count": 3431276,
                "maximum": 16.40999985,
                "minimum": -19.46999931,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.69724905,
                "variance": 114.4311373
              },
              {
                "average": 0.5301549628,
                "count": 3431276,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990899226,
                "variance": 0.2490907508
              },
              {
                "average": 426.2581754,
                "count": 3431276,
                "maximum": 455,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.37442436,
                "variance": 268.1217731
              },
              {
                "average": 220497548.2,
                "count": 3431276,
                "maximum": 220722840.5,
                "minimum": 220420005.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 131269.958,
                "variance": 17231801880.0
              },
              {
                "average": 0.5301549628,
                "count": 3431276,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990899226,
                "variance": 0.2490907508
              },
              {
                "average": 0,
                "count": 3431276,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3431276,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3431276,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2296207009,
                "count": 3431276,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4205889753,
                "variance": 0.1768950862
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94524.61672,
              2369115.612,
              0.9444318487,
              -94028.63672,
              2369589.292,
              5.224431849
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94524.616717804,
                    2369115.6117764665,
                    0.94443184870875
                  ],
                  [
                    -94524.616717804,
                    2369589.291776466,
                    0.94443184870875
                  ],
                  [
                    -94028.636717804,
                    2369589.291776466,
                    5.22443184870875
                  ],
                  [
                    -94028.636717804,
                    2369115.6117764665,
                    5.22443184870875
                  ],
                  [
                    -94524.616717804,
                    2369115.6117764665,
                    0.94443184870875
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:40:40+00:00",
            "end_time": "2018-09-08T05:33:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2347.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63808663983747,
              71.34083120428171,
              0.797674928936481
            ],
            [
              -156.63859526856103,
              71.34513856663712,
              0.797674928936481
            ],
            [
              -156.62505778561365,
              71.34531923200858,
              7.257674928936481
            ],
            [
              -156.6245517609915,
              71.34101182954254,
              7.257674928936481
            ],
            [
              -156.63808663983747,
              71.34083120428171,
              0.797674928936481
            ]
          ]
        ]
      },
      "bbox": [
        -156.6385953,
        71.3408312,
        0.7976749289,
        -156.6245518,
        71.34531923,
        7.257674929
      ],
      "properties": {
        "datetime": "2018-09-08T04:11:40Z",
        "pc:count": 2125734,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96352.06235,
            "count": 2125734,
            "maximum": -96113.46464,
            "minimum": -96609.64464,
            "name": "X",
            "position": 0,
            "stddev": 134.1296575,
            "variance": 17990.76503
          },
          {
            "average": 2373482.826,
            "count": 2125734,
            "maximum": 2373733.646,
            "minimum": 2373264.586,
            "name": "Y",
            "position": 1,
            "stddev": 131.6350936,
            "variance": 17327.79788
          },
          {
            "average": 1.754139402,
            "count": 2125734,
            "maximum": 7.257674929,
            "minimum": 0.7976749289,
            "name": "Z",
            "position": 2,
            "stddev": 1.154420805,
            "variance": 1.332687396
          },
          {
            "average": 15791.07131,
            "count": 2125734,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9664.241542,
            "variance": 93397564.58
          },
          {
            "average": 1.000006586,
            "count": 2125734,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002566304765,
            "variance": 6.585920149e-06
          },
          {
            "average": 1.000013172,
            "count": 2125734,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003629291053,
            "variance": 1.317175355e-05
          },
          {
            "average": 0.5020759888,
            "count": 2125734,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958079,
            "variance": 0.2499958079
          },
          {
            "average": 0.0004779525566,
            "count": 2125734,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02185690606,
            "variance": 0.0004777243427
          },
          {
            "average": 5.935016799,
            "count": 2125734,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.579742439,
            "variance": 12.81455593
          },
          {
            "average": 0.4217257582,
            "count": 2125734,
            "maximum": 16.33200073,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.904735995,
            "variance": 79.29432313
          },
          {
            "average": 0.4990455062,
            "count": 2125734,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999992065,
            "variance": 0.2499992065
          },
          {
            "average": 404.3028676,
            "count": 2125734,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8815663391,
            "variance": 0.7771592103
          },
          {
            "average": 220414096.5,
            "count": 2125734,
            "maximum": 220415100.1,
            "minimum": 220413308.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 501.7825303,
            "variance": 251785.7077
          },
          {
            "average": 0.4990455062,
            "count": 2125734,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999992065,
            "variance": 0.2499992065
          },
          {
            "average": 0,
            "count": 2125734,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2125734,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2125734,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1384740518,
            "count": 2125734,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3453969382,
            "variance": 0.1192990449
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96609.64464,
          2373264.586,
          0.7976749289,
          -96113.46464,
          2373733.646,
          7.257674929
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96609.64463586827,
                2373264.585954932,
                0.797674928936481
              ],
              [
                -96609.64463586827,
                2373733.6459549316,
                0.797674928936481
              ],
              [
                -96113.46463586828,
                2373733.6459549316,
                7.257674928936481
              ],
              [
                -96113.46463586828,
                2373264.585954932,
                7.257674928936481
              ],
              [
                -96609.64463586827,
                2373264.585954932,
                0.797674928936481
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:11:40+00:00",
        "end_time": "2018-09-08T03:41:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2347.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2347.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2347.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2347.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6385953,
            71.3408312,
            0.7976749289,
            -156.6245518,
            71.34531923,
            7.257674929
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63808663983747,
                  71.34083120428171,
                  0.797674928936481
                ],
                [
                  -156.63859526856103,
                  71.34513856663712,
                  0.797674928936481
                ],
                [
                  -156.62505778561365,
                  71.34531923200858,
                  7.257674928936481
                ],
                [
                  -156.6245517609915,
                  71.34101182954254,
                  7.257674928936481
                ],
                [
                  -156.63808663983747,
                  71.34083120428171,
                  0.797674928936481
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2347.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2347.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:11:40Z",
            "pc:count": 2125734,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96352.06235,
                "count": 2125734,
                "maximum": -96113.46464,
                "minimum": -96609.64464,
                "name": "X",
                "position": 0,
                "stddev": 134.1296575,
                "variance": 17990.76503
              },
              {
                "average": 2373482.826,
                "count": 2125734,
                "maximum": 2373733.646,
                "minimum": 2373264.586,
                "name": "Y",
                "position": 1,
                "stddev": 131.6350936,
                "variance": 17327.79788
              },
              {
                "average": 1.754139402,
                "count": 2125734,
                "maximum": 7.257674929,
                "minimum": 0.7976749289,
                "name": "Z",
                "position": 2,
                "stddev": 1.154420805,
                "variance": 1.332687396
              },
              {
                "average": 15791.07131,
                "count": 2125734,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9664.241542,
                "variance": 93397564.58
              },
              {
                "average": 1.000006586,
                "count": 2125734,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002566304765,
                "variance": 6.585920149e-06
              },
              {
                "average": 1.000013172,
                "count": 2125734,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003629291053,
                "variance": 1.317175355e-05
              },
              {
                "average": 0.5020759888,
                "count": 2125734,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958079,
                "variance": 0.2499958079
              },
              {
                "average": 0.0004779525566,
                "count": 2125734,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02185690606,
                "variance": 0.0004777243427
              },
              {
                "average": 5.935016799,
                "count": 2125734,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.579742439,
                "variance": 12.81455593
              },
              {
                "average": 0.4217257582,
                "count": 2125734,
                "maximum": 16.33200073,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.904735995,
                "variance": 79.29432313
              },
              {
                "average": 0.4990455062,
                "count": 2125734,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999992065,
                "variance": 0.2499992065
              },
              {
                "average": 404.3028676,
                "count": 2125734,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8815663391,
                "variance": 0.7771592103
              },
              {
                "average": 220414096.5,
                "count": 2125734,
                "maximum": 220415100.1,
                "minimum": 220413308.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 501.7825303,
                "variance": 251785.7077
              },
              {
                "average": 0.4990455062,
                "count": 2125734,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999992065,
                "variance": 0.2499992065
              },
              {
                "average": 0,
                "count": 2125734,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2125734,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2125734,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1384740518,
                "count": 2125734,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3453969382,
                "variance": 0.1192990449
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96609.64464,
              2373264.586,
              0.7976749289,
              -96113.46464,
              2373733.646,
              7.257674929
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96609.64463586827,
                    2373264.585954932,
                    0.797674928936481
                  ],
                  [
                    -96609.64463586827,
                    2373733.6459549316,
                    0.797674928936481
                  ],
                  [
                    -96113.46463586828,
                    2373733.6459549316,
                    7.257674928936481
                  ],
                  [
                    -96113.46463586828,
                    2373264.585954932,
                    7.257674928936481
                  ],
                  [
                    -96609.64463586827,
                    2373264.585954932,
                    0.797674928936481
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:11:40+00:00",
            "end_time": "2018-09-08T03:41:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2212.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.7784293391007,
              71.30495980260388,
              0.877462458700865
            ],
            [
              -156.77884434711228,
              71.30830128914667,
              0.877462458700865
            ],
            [
              -156.76822879261593,
              71.30845080534434,
              1.437462458700865
            ],
            [
              -156.76781536630935,
              71.3051092931036,
              1.437462458700865
            ],
            [
              -156.7784293391007,
              71.30495980260388,
              0.877462458700865
            ]
          ]
        ]
      },
      "bbox": [
        -156.7788443,
        71.3049598,
        0.8774624587,
        -156.7678154,
        71.30845081,
        1.437462459
      ],
      "properties": {
        "datetime": "2018-09-08T04:02:17Z",
        "pc:count": 681989,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101667.0946,
            "count": 681989,
            "maximum": -101519.739,
            "minimum": -101909.499,
            "name": "X",
            "position": 0,
            "stddev": 90.05964146,
            "variance": 8110.73902
          },
          {
            "average": 2369694.451,
            "count": 681989,
            "maximum": 2369937.84,
            "minimum": 2369573.84,
            "name": "Y",
            "position": 1,
            "stddev": 79.93817709,
            "variance": 6390.112156
          },
          {
            "average": 1.150681836,
            "count": 681989,
            "maximum": 1.437462459,
            "minimum": 0.8774624587,
            "name": "Z",
            "position": 2,
            "stddev": 0.05622043346,
            "variance": 0.003160737138
          },
          {
            "average": 13270.0339,
            "count": 681989,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9284.98107,
            "variance": 86210873.46
          },
          {
            "average": 1,
            "count": 681989,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 681989,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4914492756,
            "count": 681989,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999272463,
            "variance": 0.2499272516
          },
          {
            "average": 0.0006788965804,
            "count": 681989,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02604681698,
            "variance": 0.0006784366747
          },
          {
            "average": 7.639948738,
            "count": 681989,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.572959287,
            "variance": 6.620119493
          },
          {
            "average": 3.601011483,
            "count": 681989,
            "maximum": 12.88799953,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.964725115,
            "variance": 48.50739593
          },
          {
            "average": 0.4907615812,
            "count": 681989,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999150108,
            "variance": 0.2499150181
          },
          {
            "average": 403.3278323,
            "count": 681989,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6627866932,
            "variance": 0.4392862006
          },
          {
            "average": 220413543.7,
            "count": 681989,
            "maximum": 220414537.1,
            "minimum": 220412758.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 339.872305,
            "variance": 115513.1837
          },
          {
            "average": 0.4907615812,
            "count": 681989,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999150108,
            "variance": 0.2499150181
          },
          {
            "average": 0,
            "count": 681989,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 681989,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 681989,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05548036699,
            "count": 681989,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2289156454,
            "variance": 0.0524023727
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101909.499,
          2369573.84,
          0.8774624587,
          -101519.739,
          2369937.84,
          1.437462459
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101909.49895481211,
                2369573.8403199,
                0.877462458700865
              ],
              [
                -101909.49895481211,
                2369937.8403199,
                0.877462458700865
              ],
              [
                -101519.7389548121,
                2369937.8403199,
                1.437462458700865
              ],
              [
                -101519.7389548121,
                2369573.8403199,
                1.437462458700865
              ],
              [
                -101909.49895481211,
                2369573.8403199,
                0.877462458700865
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:02:17+00:00",
        "end_time": "2018-09-08T03:32:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2212.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2212.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2212.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2212.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7788443,
            71.3049598,
            0.8774624587,
            -156.7678154,
            71.30845081,
            1.437462459
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.7784293391007,
                  71.30495980260388,
                  0.877462458700865
                ],
                [
                  -156.77884434711228,
                  71.30830128914667,
                  0.877462458700865
                ],
                [
                  -156.76822879261593,
                  71.30845080534434,
                  1.437462458700865
                ],
                [
                  -156.76781536630935,
                  71.3051092931036,
                  1.437462458700865
                ],
                [
                  -156.7784293391007,
                  71.30495980260388,
                  0.877462458700865
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2212.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2212.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:02:17Z",
            "pc:count": 681989,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101667.0946,
                "count": 681989,
                "maximum": -101519.739,
                "minimum": -101909.499,
                "name": "X",
                "position": 0,
                "stddev": 90.05964146,
                "variance": 8110.73902
              },
              {
                "average": 2369694.451,
                "count": 681989,
                "maximum": 2369937.84,
                "minimum": 2369573.84,
                "name": "Y",
                "position": 1,
                "stddev": 79.93817709,
                "variance": 6390.112156
              },
              {
                "average": 1.150681836,
                "count": 681989,
                "maximum": 1.437462459,
                "minimum": 0.8774624587,
                "name": "Z",
                "position": 2,
                "stddev": 0.05622043346,
                "variance": 0.003160737138
              },
              {
                "average": 13270.0339,
                "count": 681989,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9284.98107,
                "variance": 86210873.46
              },
              {
                "average": 1,
                "count": 681989,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 681989,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4914492756,
                "count": 681989,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999272463,
                "variance": 0.2499272516
              },
              {
                "average": 0.0006788965804,
                "count": 681989,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02604681698,
                "variance": 0.0006784366747
              },
              {
                "average": 7.639948738,
                "count": 681989,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.572959287,
                "variance": 6.620119493
              },
              {
                "average": 3.601011483,
                "count": 681989,
                "maximum": 12.88799953,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.964725115,
                "variance": 48.50739593
              },
              {
                "average": 0.4907615812,
                "count": 681989,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999150108,
                "variance": 0.2499150181
              },
              {
                "average": 403.3278323,
                "count": 681989,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6627866932,
                "variance": 0.4392862006
              },
              {
                "average": 220413543.7,
                "count": 681989,
                "maximum": 220414537.1,
                "minimum": 220412758.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 339.872305,
                "variance": 115513.1837
              },
              {
                "average": 0.4907615812,
                "count": 681989,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999150108,
                "variance": 0.2499150181
              },
              {
                "average": 0,
                "count": 681989,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 681989,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 681989,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05548036699,
                "count": 681989,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2289156454,
                "variance": 0.0524023727
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101909.499,
              2369573.84,
              0.8774624587,
              -101519.739,
              2369937.84,
              1.437462459
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101909.49895481211,
                    2369573.8403199,
                    0.877462458700865
                  ],
                  [
                    -101909.49895481211,
                    2369937.8403199,
                    0.877462458700865
                  ],
                  [
                    -101519.7389548121,
                    2369937.8403199,
                    1.437462458700865
                  ],
                  [
                    -101519.7389548121,
                    2369573.8403199,
                    1.437462458700865
                  ],
                  [
                    -101909.49895481211,
                    2369573.8403199,
                    0.877462458700865
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:02:17+00:00",
            "end_time": "2018-09-08T03:32:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2295.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56283151489356,
              71.31977857538303,
              0.859629231994678
            ],
            [
              -156.5633297661595,
              71.32412554656719,
              0.859629231994678
            ],
            [
              -156.5498049459402,
              71.32430101608917,
              1.779629231994678
            ],
            [
              -156.54930931840113,
              71.31995400563747,
              1.779629231994678
            ],
            [
              -156.56283151489356,
              71.31977857538303,
              0.859629231994678
            ]
          ]
        ]
      },
      "bbox": [
        -156.5633298,
        71.31977858,
        0.859629232,
        -156.5493093,
        71.32430102,
        1.779629232
      ],
      "properties": {
        "datetime": "2018-09-11T17:29:31Z",
        "pc:count": 2198700,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93680.39391,
            "count": 2198700,
            "maximum": -93447.3345,
            "minimum": -93943.4945,
            "name": "X",
            "position": 0,
            "stddev": 134.0221824,
            "variance": 17961.94537
          },
          {
            "average": 2371103.84,
            "count": 2198700,
            "maximum": 2371340.834,
            "minimum": 2370867.414,
            "name": "Y",
            "position": 1,
            "stddev": 124.2014932,
            "variance": 15426.01092
          },
          {
            "average": 1.183989941,
            "count": 2198700,
            "maximum": 1.779629232,
            "minimum": 0.859629232,
            "name": "Z",
            "position": 2,
            "stddev": 0.08158238266,
            "variance": 0.00665568516
          },
          {
            "average": 15600.63603,
            "count": 2198700,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 13773.43047,
            "variance": 189707386.8
          },
          {
            "average": 1,
            "count": 2198700,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2198700,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4905694274,
            "count": 2198700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999111701,
            "variance": 0.249911178
          },
          {
            "average": 0.0007226997771,
            "count": 2198700,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02687336619,
            "variance": 0.0007221778106
          },
          {
            "average": 7.438168918,
            "count": 2198700,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.824439595,
            "variance": 7.977459028
          },
          {
            "average": 5.37394426,
            "count": 2198700,
            "maximum": 20.44799995,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.084609809,
            "variance": 50.19169614
          },
          {
            "average": 0.4826183654,
            "count": 2198700,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996979011,
            "variance": 0.2496979923
          },
          {
            "average": 425.5134529,
            "count": 2198700,
            "maximum": 452,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.46383285,
            "variance": 304.9854578
          },
          {
            "average": 220513849,
            "count": 2198700,
            "maximum": 220722171.9,
            "minimum": 220418471.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 140262.5994,
            "variance": 19673596790.0
          },
          {
            "average": 0.4826183654,
            "count": 2198700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996979011,
            "variance": 0.2496979923
          },
          {
            "average": 0,
            "count": 2198700,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2198700,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2198700,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05564606358,
            "count": 2198700,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.229237002,
            "variance": 0.05254960309
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93943.4945,
          2370867.414,
          0.859629232,
          -93447.3345,
          2371340.834,
          1.779629232
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93943.49449641422,
                2370867.4143923763,
                0.859629231994678
              ],
              [
                -93943.49449641422,
                2371340.8343923762,
                0.859629231994678
              ],
              [
                -93447.33449641422,
                2371340.8343923762,
                1.779629231994678
              ],
              [
                -93447.33449641422,
                2370867.4143923763,
                1.779629231994678
              ],
              [
                -93943.49449641422,
                2370867.4143923763,
                0.859629231994678
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:29:31+00:00",
        "end_time": "2018-09-08T05:07:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2295.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2295.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2295.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2295.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5633298,
            71.31977858,
            0.859629232,
            -156.5493093,
            71.32430102,
            1.779629232
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56283151489356,
                  71.31977857538303,
                  0.859629231994678
                ],
                [
                  -156.5633297661595,
                  71.32412554656719,
                  0.859629231994678
                ],
                [
                  -156.5498049459402,
                  71.32430101608917,
                  1.779629231994678
                ],
                [
                  -156.54930931840113,
                  71.31995400563747,
                  1.779629231994678
                ],
                [
                  -156.56283151489356,
                  71.31977857538303,
                  0.859629231994678
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2295.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2295.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:29:31Z",
            "pc:count": 2198700,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93680.39391,
                "count": 2198700,
                "maximum": -93447.3345,
                "minimum": -93943.4945,
                "name": "X",
                "position": 0,
                "stddev": 134.0221824,
                "variance": 17961.94537
              },
              {
                "average": 2371103.84,
                "count": 2198700,
                "maximum": 2371340.834,
                "minimum": 2370867.414,
                "name": "Y",
                "position": 1,
                "stddev": 124.2014932,
                "variance": 15426.01092
              },
              {
                "average": 1.183989941,
                "count": 2198700,
                "maximum": 1.779629232,
                "minimum": 0.859629232,
                "name": "Z",
                "position": 2,
                "stddev": 0.08158238266,
                "variance": 0.00665568516
              },
              {
                "average": 15600.63603,
                "count": 2198700,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 13773.43047,
                "variance": 189707386.8
              },
              {
                "average": 1,
                "count": 2198700,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2198700,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4905694274,
                "count": 2198700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999111701,
                "variance": 0.249911178
              },
              {
                "average": 0.0007226997771,
                "count": 2198700,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02687336619,
                "variance": 0.0007221778106
              },
              {
                "average": 7.438168918,
                "count": 2198700,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.824439595,
                "variance": 7.977459028
              },
              {
                "average": 5.37394426,
                "count": 2198700,
                "maximum": 20.44799995,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.084609809,
                "variance": 50.19169614
              },
              {
                "average": 0.4826183654,
                "count": 2198700,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996979011,
                "variance": 0.2496979923
              },
              {
                "average": 425.5134529,
                "count": 2198700,
                "maximum": 452,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.46383285,
                "variance": 304.9854578
              },
              {
                "average": 220513849,
                "count": 2198700,
                "maximum": 220722171.9,
                "minimum": 220418471.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 140262.5994,
                "variance": 19673596790.0
              },
              {
                "average": 0.4826183654,
                "count": 2198700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996979011,
                "variance": 0.2496979923
              },
              {
                "average": 0,
                "count": 2198700,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2198700,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2198700,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05564606358,
                "count": 2198700,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.229237002,
                "variance": 0.05254960309
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93943.4945,
              2370867.414,
              0.859629232,
              -93447.3345,
              2371340.834,
              1.779629232
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93943.49449641422,
                    2370867.4143923763,
                    0.859629231994678
                  ],
                  [
                    -93943.49449641422,
                    2371340.8343923762,
                    0.859629231994678
                  ],
                  [
                    -93447.33449641422,
                    2371340.8343923762,
                    1.779629231994678
                  ],
                  [
                    -93447.33449641422,
                    2370867.4143923763,
                    1.779629231994678
                  ],
                  [
                    -93943.49449641422,
                    2370867.4143923763,
                    0.859629231994678
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:29:31+00:00",
            "end_time": "2018-09-08T05:07:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2384.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.53447837294976,
              71.35645118318367,
              0.901644821500558
            ],
            [
              -156.53497209049237,
              71.36080078129018,
              0.901644821500558
            ],
            [
              -156.52142265817264,
              71.36097437595,
              7.381644821500559
            ],
            [
              -156.52093157446546,
              71.35662473888955,
              7.381644821500559
            ],
            [
              -156.53447837294976,
              71.35645118318367,
              0.901644821500558
            ]
          ]
        ]
      },
      "bbox": [
        -156.5349721,
        71.35645118,
        0.9016448215,
        -156.5209316,
        71.36097438,
        7.381644822
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:18Z",
        "pc:count": 2548187,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92495.90638,
            "count": 2548187,
            "maximum": -92256.18983,
            "minimum": -92752.42983,
            "name": "X",
            "position": 0,
            "stddev": 136.3143673,
            "variance": 18581.60675
          },
          {
            "average": 2375043.497,
            "count": 2548187,
            "maximum": 2375288.731,
            "minimum": 2374815.151,
            "name": "Y",
            "position": 1,
            "stddev": 122.8199134,
            "variance": 15084.73113
          },
          {
            "average": 1.970699114,
            "count": 2548187,
            "maximum": 7.381644822,
            "minimum": 0.9016448215,
            "name": "Z",
            "position": 2,
            "stddev": 0.8915482094,
            "variance": 0.7948582096
          },
          {
            "average": 18132.02868,
            "count": 2548187,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7587.932312,
            "variance": 57576716.78
          },
          {
            "average": 1.00000157,
            "count": 2548187,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001252893315,
            "variance": 1.56974166e-06
          },
          {
            "average": 1.000003139,
            "count": 2548187,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001771857328,
            "variance": 3.139478391e-06
          },
          {
            "average": 0.4979191088,
            "count": 2548187,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499995768,
            "variance": 0.249995768
          },
          {
            "average": 0.00051683805,
            "count": 2548187,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02272820123,
            "variance": 0.0005165711311
          },
          {
            "average": 2.862432781,
            "count": 2548187,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.14993619,
            "variance": 9.922098004
          },
          {
            "average": -0.1448745164,
            "count": 2548187,
            "maximum": 16.26000023,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.699710613,
            "variance": 94.08438598
          },
          {
            "average": 0.4380267225,
            "count": 2548187,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4961445449,
            "variance": 0.2461594095
          },
          {
            "average": 407.4978595,
            "count": 2548187,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9117518232,
            "variance": 0.8312913871
          },
          {
            "average": 220415882.9,
            "count": 2548187,
            "maximum": 220416638.4,
            "minimum": 220415157,
            "name": "GpsTime",
            "position": 12,
            "stddev": 520.2450046,
            "variance": 270654.8648
          },
          {
            "average": 0.4380267225,
            "count": 2548187,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4961445449,
            "variance": 0.2461594095
          },
          {
            "average": 0,
            "count": 2548187,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2548187,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2548187,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2202640544,
            "count": 2548187,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4144247436,
            "variance": 0.1717478681
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92752.42983,
          2374815.151,
          0.9016448215,
          -92256.18983,
          2375288.731,
          7.381644822
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92752.42982796184,
                2374815.1507542394,
                0.901644821500558
              ],
              [
                -92752.42982796184,
                2375288.7307542395,
                0.901644821500558
              ],
              [
                -92256.18982796185,
                2375288.7307542395,
                7.381644821500559
              ],
              [
                -92256.18982796185,
                2374815.1507542394,
                7.381644821500559
              ],
              [
                -92752.42982796184,
                2374815.1507542394,
                0.901644821500558
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:18+00:00",
        "end_time": "2018-09-08T04:12:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2384.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2384.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2384.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2384.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5349721,
            71.35645118,
            0.9016448215,
            -156.5209316,
            71.36097438,
            7.381644822
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.53447837294976,
                  71.35645118318367,
                  0.901644821500558
                ],
                [
                  -156.53497209049237,
                  71.36080078129018,
                  0.901644821500558
                ],
                [
                  -156.52142265817264,
                  71.36097437595,
                  7.381644821500559
                ],
                [
                  -156.52093157446546,
                  71.35662473888955,
                  7.381644821500559
                ],
                [
                  -156.53447837294976,
                  71.35645118318367,
                  0.901644821500558
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2384.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2384.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:18Z",
            "pc:count": 2548187,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92495.90638,
                "count": 2548187,
                "maximum": -92256.18983,
                "minimum": -92752.42983,
                "name": "X",
                "position": 0,
                "stddev": 136.3143673,
                "variance": 18581.60675
              },
              {
                "average": 2375043.497,
                "count": 2548187,
                "maximum": 2375288.731,
                "minimum": 2374815.151,
                "name": "Y",
                "position": 1,
                "stddev": 122.8199134,
                "variance": 15084.73113
              },
              {
                "average": 1.970699114,
                "count": 2548187,
                "maximum": 7.381644822,
                "minimum": 0.9016448215,
                "name": "Z",
                "position": 2,
                "stddev": 0.8915482094,
                "variance": 0.7948582096
              },
              {
                "average": 18132.02868,
                "count": 2548187,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7587.932312,
                "variance": 57576716.78
              },
              {
                "average": 1.00000157,
                "count": 2548187,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001252893315,
                "variance": 1.56974166e-06
              },
              {
                "average": 1.000003139,
                "count": 2548187,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001771857328,
                "variance": 3.139478391e-06
              },
              {
                "average": 0.4979191088,
                "count": 2548187,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499995768,
                "variance": 0.249995768
              },
              {
                "average": 0.00051683805,
                "count": 2548187,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02272820123,
                "variance": 0.0005165711311
              },
              {
                "average": 2.862432781,
                "count": 2548187,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.14993619,
                "variance": 9.922098004
              },
              {
                "average": -0.1448745164,
                "count": 2548187,
                "maximum": 16.26000023,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.699710613,
                "variance": 94.08438598
              },
              {
                "average": 0.4380267225,
                "count": 2548187,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4961445449,
                "variance": 0.2461594095
              },
              {
                "average": 407.4978595,
                "count": 2548187,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9117518232,
                "variance": 0.8312913871
              },
              {
                "average": 220415882.9,
                "count": 2548187,
                "maximum": 220416638.4,
                "minimum": 220415157,
                "name": "GpsTime",
                "position": 12,
                "stddev": 520.2450046,
                "variance": 270654.8648
              },
              {
                "average": 0.4380267225,
                "count": 2548187,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4961445449,
                "variance": 0.2461594095
              },
              {
                "average": 0,
                "count": 2548187,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2548187,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2548187,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2202640544,
                "count": 2548187,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4144247436,
                "variance": 0.1717478681
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92752.42983,
              2374815.151,
              0.9016448215,
              -92256.18983,
              2375288.731,
              7.381644822
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92752.42982796184,
                    2374815.1507542394,
                    0.901644821500558
                  ],
                  [
                    -92752.42982796184,
                    2375288.7307542395,
                    0.901644821500558
                  ],
                  [
                    -92256.18982796185,
                    2375288.7307542395,
                    7.381644821500559
                  ],
                  [
                    -92256.18982796185,
                    2374815.1507542394,
                    7.381644821500559
                  ],
                  [
                    -92752.42982796184,
                    2374815.1507542394,
                    0.901644821500558
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:18+00:00",
            "end_time": "2018-09-08T04:12:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2232.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76591098109353,
              71.30896613902114,
              0.858643804083389
            ],
            [
              -156.76634542590065,
              71.31247941483795,
              0.858643804083389
            ],
            [
              -156.75517643606133,
              71.31263597569867,
              1.438643804083389
            ],
            [
              -156.75474374127035,
              71.30912267158311,
              1.438643804083389
            ],
            [
              -156.76591098109353,
              71.30896613902114,
              0.858643804083389
            ]
          ]
        ]
      },
      "bbox": [
        -156.7663454,
        71.30896614,
        0.8586438041,
        -156.7547437,
        71.31263598,
        1.438643804
      ],
      "properties": {
        "datetime": "2018-09-08T04:02:04Z",
        "pc:count": 652975,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101158.9123,
            "count": 652975,
            "maximum": -101022.4514,
            "minimum": -101432.4514,
            "name": "X",
            "position": 0,
            "stddev": 91.53018179,
            "variance": 8377.774179
          },
          {
            "average": 2370131.189,
            "count": 652975,
            "maximum": 2370373.037,
            "minimum": 2369990.337,
            "name": "Y",
            "position": 1,
            "stddev": 87.90597867,
            "variance": 7727.461086
          },
          {
            "average": 1.145380739,
            "count": 652975,
            "maximum": 1.438643804,
            "minimum": 0.8586438041,
            "name": "Z",
            "position": 2,
            "stddev": 0.05846357559,
            "variance": 0.00341798967
          },
          {
            "average": 14441.74195,
            "count": 652975,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10539.28746,
            "variance": 111076580.1
          },
          {
            "average": 1,
            "count": 652975,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 652975,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4919943336,
            "count": 652975,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499936288,
            "variance": 0.2499362921
          },
          {
            "average": 0.0005314139132,
            "count": 652975,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02304630829,
            "variance": 0.0005311323259
          },
          {
            "average": 7.704526207,
            "count": 652975,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.457313418,
            "variance": 6.038389236
          },
          {
            "average": 3.294633865,
            "count": 652975,
            "maximum": 13.68000031,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.957197761,
            "variance": 48.40260069
          },
          {
            "average": 0.4896512118,
            "count": 652975,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998932739,
            "variance": 0.2498932853
          },
          {
            "average": 403.2730748,
            "count": 652975,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6456612207,
            "variance": 0.4168784119
          },
          {
            "average": 220413519,
            "count": 652975,
            "maximum": 220414524.9,
            "minimum": 220412770.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 334.5393042,
            "variance": 111916.546
          },
          {
            "average": 0.4896512118,
            "count": 652975,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998932739,
            "variance": 0.2498932853
          },
          {
            "average": 0,
            "count": 652975,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 652975,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 652975,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03517745702,
            "count": 652975,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1842282701,
            "variance": 0.03394005552
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101432.4514,
          2369990.337,
          0.8586438041,
          -101022.4514,
          2370373.037,
          1.438643804
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101432.45135636715,
                2369990.3372359867,
                0.858643804083389
              ],
              [
                -101432.45135636715,
                2370373.037235987,
                0.858643804083389
              ],
              [
                -101022.45135636715,
                2370373.037235987,
                1.438643804083389
              ],
              [
                -101022.45135636715,
                2369990.3372359867,
                1.438643804083389
              ],
              [
                -101432.45135636715,
                2369990.3372359867,
                0.858643804083389
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:02:04+00:00",
        "end_time": "2018-09-08T03:32:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2232.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2232.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2232.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2232.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7663454,
            71.30896614,
            0.8586438041,
            -156.7547437,
            71.31263598,
            1.438643804
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76591098109353,
                  71.30896613902114,
                  0.858643804083389
                ],
                [
                  -156.76634542590065,
                  71.31247941483795,
                  0.858643804083389
                ],
                [
                  -156.75517643606133,
                  71.31263597569867,
                  1.438643804083389
                ],
                [
                  -156.75474374127035,
                  71.30912267158311,
                  1.438643804083389
                ],
                [
                  -156.76591098109353,
                  71.30896613902114,
                  0.858643804083389
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2232.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2232.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:02:04Z",
            "pc:count": 652975,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101158.9123,
                "count": 652975,
                "maximum": -101022.4514,
                "minimum": -101432.4514,
                "name": "X",
                "position": 0,
                "stddev": 91.53018179,
                "variance": 8377.774179
              },
              {
                "average": 2370131.189,
                "count": 652975,
                "maximum": 2370373.037,
                "minimum": 2369990.337,
                "name": "Y",
                "position": 1,
                "stddev": 87.90597867,
                "variance": 7727.461086
              },
              {
                "average": 1.145380739,
                "count": 652975,
                "maximum": 1.438643804,
                "minimum": 0.8586438041,
                "name": "Z",
                "position": 2,
                "stddev": 0.05846357559,
                "variance": 0.00341798967
              },
              {
                "average": 14441.74195,
                "count": 652975,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10539.28746,
                "variance": 111076580.1
              },
              {
                "average": 1,
                "count": 652975,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 652975,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4919943336,
                "count": 652975,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499936288,
                "variance": 0.2499362921
              },
              {
                "average": 0.0005314139132,
                "count": 652975,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02304630829,
                "variance": 0.0005311323259
              },
              {
                "average": 7.704526207,
                "count": 652975,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.457313418,
                "variance": 6.038389236
              },
              {
                "average": 3.294633865,
                "count": 652975,
                "maximum": 13.68000031,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.957197761,
                "variance": 48.40260069
              },
              {
                "average": 0.4896512118,
                "count": 652975,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998932739,
                "variance": 0.2498932853
              },
              {
                "average": 403.2730748,
                "count": 652975,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6456612207,
                "variance": 0.4168784119
              },
              {
                "average": 220413519,
                "count": 652975,
                "maximum": 220414524.9,
                "minimum": 220412770.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 334.5393042,
                "variance": 111916.546
              },
              {
                "average": 0.4896512118,
                "count": 652975,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998932739,
                "variance": 0.2498932853
              },
              {
                "average": 0,
                "count": 652975,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 652975,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 652975,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03517745702,
                "count": 652975,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1842282701,
                "variance": 0.03394005552
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101432.4514,
              2369990.337,
              0.8586438041,
              -101022.4514,
              2370373.037,
              1.438643804
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101432.45135636715,
                    2369990.3372359867,
                    0.858643804083389
                  ],
                  [
                    -101432.45135636715,
                    2370373.037235987,
                    0.858643804083389
                  ],
                  [
                    -101022.45135636715,
                    2370373.037235987,
                    1.438643804083389
                  ],
                  [
                    -101022.45135636715,
                    2369990.3372359867,
                    1.438643804083389
                  ],
                  [
                    -101432.45135636715,
                    2369990.3372359867,
                    0.858643804083389
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:02:04+00:00",
            "end_time": "2018-09-08T03:32:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2349.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61249226293813,
              71.34064516194758,
              1.020057219676171
            ],
            [
              -156.61300078857047,
              71.34499390904605,
              1.020057219676171
            ],
            [
              -156.59946537061285,
              71.34517278940295,
              8.380057219676171
            ],
            [
              -156.59895947376188,
              71.34082400220899,
              8.380057219676171
            ],
            [
              -156.61249226293813,
              71.34064516194758,
              1.020057219676171
            ]
          ]
        ]
      },
      "bbox": [
        -156.6130008,
        71.34064516,
        1.02005722,
        -156.5989595,
        71.34517279,
        8.38005722
      ],
      "properties": {
        "datetime": "2018-09-08T04:30:32Z",
        "pc:count": 2521777,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95438.86445,
            "count": 2521777,
            "maximum": -95177.53236,
            "minimum": -95673.63236,
            "name": "X",
            "position": 0,
            "stddev": 137.2190708,
            "variance": 18829.07339
          },
          {
            "average": 2373447.644,
            "count": 2521777,
            "maximum": 2373680.866,
            "minimum": 2373207.306,
            "name": "Y",
            "position": 1,
            "stddev": 131.0506621,
            "variance": 17174.27604
          },
          {
            "average": 2.013799942,
            "count": 2521777,
            "maximum": 8.38005722,
            "minimum": 1.02005722,
            "name": "Z",
            "position": 2,
            "stddev": 0.6279765387,
            "variance": 0.3943545332
          },
          {
            "average": 33076.29832,
            "count": 2521777,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15462.94586,
            "variance": 239102694.7
          },
          {
            "average": 1.000531371,
            "count": 2521777,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02306257309,
            "variance": 0.0005318822776
          },
          {
            "average": 1.001062346,
            "count": 2521777,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03261283846,
            "variance": 0.001063597233
          },
          {
            "average": 0.4983184477,
            "count": 2521777,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999972715,
            "variance": 0.2499972715
          },
          {
            "average": 0.0004794238349,
            "count": 2521777,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02189050428,
            "variance": 0.0004791941777
          },
          {
            "average": 2.54557679,
            "count": 2521777,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.871484326,
            "variance": 8.245422236
          },
          {
            "average": 0.721018884,
            "count": 2521777,
            "maximum": 16.30800056,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.884225544,
            "variance": 97.6979146
          },
          {
            "average": 0.486954239,
            "count": 2521777,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998298782,
            "variance": 0.2498299072
          },
          {
            "average": 405.9004079,
            "count": 2521777,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8904641008,
            "variance": 0.7929263148
          },
          {
            "average": 220414975.6,
            "count": 2521777,
            "maximum": 220416232.3,
            "minimum": 220413973.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 511.5327138,
            "variance": 261665.7173
          },
          {
            "average": 0.486954239,
            "count": 2521777,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998298782,
            "variance": 0.2498299072
          },
          {
            "average": 0,
            "count": 2521777,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2521777,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2521777,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2020702068,
            "count": 2521777,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4015443964,
            "variance": 0.1612379023
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95673.63236,
          2373207.306,
          1.02005722,
          -95177.53236,
          2373680.866,
          8.38005722
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95673.63236000547,
                2373207.3055972704,
                1.020057219676171
              ],
              [
                -95673.63236000547,
                2373680.86559727,
                1.020057219676171
              ],
              [
                -95177.53236000547,
                2373680.86559727,
                8.380057219676171
              ],
              [
                -95177.53236000547,
                2373207.3055972704,
                8.380057219676171
              ],
              [
                -95673.63236000547,
                2373207.3055972704,
                1.020057219676171
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:30:32+00:00",
        "end_time": "2018-09-08T03:52:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2349.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2349.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2349.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2349.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6130008,
            71.34064516,
            1.02005722,
            -156.5989595,
            71.34517279,
            8.38005722
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61249226293813,
                  71.34064516194758,
                  1.020057219676171
                ],
                [
                  -156.61300078857047,
                  71.34499390904605,
                  1.020057219676171
                ],
                [
                  -156.59946537061285,
                  71.34517278940295,
                  8.380057219676171
                ],
                [
                  -156.59895947376188,
                  71.34082400220899,
                  8.380057219676171
                ],
                [
                  -156.61249226293813,
                  71.34064516194758,
                  1.020057219676171
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2349.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2349.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:30:32Z",
            "pc:count": 2521777,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95438.86445,
                "count": 2521777,
                "maximum": -95177.53236,
                "minimum": -95673.63236,
                "name": "X",
                "position": 0,
                "stddev": 137.2190708,
                "variance": 18829.07339
              },
              {
                "average": 2373447.644,
                "count": 2521777,
                "maximum": 2373680.866,
                "minimum": 2373207.306,
                "name": "Y",
                "position": 1,
                "stddev": 131.0506621,
                "variance": 17174.27604
              },
              {
                "average": 2.013799942,
                "count": 2521777,
                "maximum": 8.38005722,
                "minimum": 1.02005722,
                "name": "Z",
                "position": 2,
                "stddev": 0.6279765387,
                "variance": 0.3943545332
              },
              {
                "average": 33076.29832,
                "count": 2521777,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15462.94586,
                "variance": 239102694.7
              },
              {
                "average": 1.000531371,
                "count": 2521777,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02306257309,
                "variance": 0.0005318822776
              },
              {
                "average": 1.001062346,
                "count": 2521777,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03261283846,
                "variance": 0.001063597233
              },
              {
                "average": 0.4983184477,
                "count": 2521777,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999972715,
                "variance": 0.2499972715
              },
              {
                "average": 0.0004794238349,
                "count": 2521777,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02189050428,
                "variance": 0.0004791941777
              },
              {
                "average": 2.54557679,
                "count": 2521777,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.871484326,
                "variance": 8.245422236
              },
              {
                "average": 0.721018884,
                "count": 2521777,
                "maximum": 16.30800056,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.884225544,
                "variance": 97.6979146
              },
              {
                "average": 0.486954239,
                "count": 2521777,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998298782,
                "variance": 0.2498299072
              },
              {
                "average": 405.9004079,
                "count": 2521777,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8904641008,
                "variance": 0.7929263148
              },
              {
                "average": 220414975.6,
                "count": 2521777,
                "maximum": 220416232.3,
                "minimum": 220413973.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 511.5327138,
                "variance": 261665.7173
              },
              {
                "average": 0.486954239,
                "count": 2521777,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998298782,
                "variance": 0.2498299072
              },
              {
                "average": 0,
                "count": 2521777,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2521777,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2521777,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2020702068,
                "count": 2521777,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4015443964,
                "variance": 0.1612379023
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95673.63236,
              2373207.306,
              1.02005722,
              -95177.53236,
              2373680.866,
              8.38005722
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95673.63236000547,
                    2373207.3055972704,
                    1.020057219676171
                  ],
                  [
                    -95673.63236000547,
                    2373680.86559727,
                    1.020057219676171
                  ],
                  [
                    -95177.53236000547,
                    2373680.86559727,
                    8.380057219676171
                  ],
                  [
                    -95177.53236000547,
                    2373207.3055972704,
                    8.380057219676171
                  ],
                  [
                    -95673.63236000547,
                    2373207.3055972704,
                    1.020057219676171
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:30:32+00:00",
            "end_time": "2018-09-08T03:52:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2328.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6386583050893,
              71.3326379713192,
              0.94771876110754
            ],
            [
              -156.63917165063125,
              71.33698567889152,
              0.94771876110754
            ],
            [
              -156.62564674492262,
              71.33716627223451,
              1.30771876110754
            ],
            [
              -156.62513602461374,
              71.33281852421112,
              1.30771876110754
            ],
            [
              -156.6386583050893,
              71.3326379713192,
              0.94771876110754
            ]
          ]
        ]
      },
      "bbox": [
        -156.6391717,
        71.33263797,
        0.9477187611,
        -156.625136,
        71.33716627,
        1.307718761
      ],
      "properties": {
        "datetime": "2018-09-08T04:30:10Z",
        "pc:count": 1662693,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96425.27911,
            "count": 1662693,
            "maximum": -96170.08275,
            "minimum": -96665.98275,
            "name": "X",
            "position": 0,
            "stddev": 135.5338695,
            "variance": 18369.42978
          },
          {
            "average": 2372615.868,
            "count": 1662693,
            "maximum": 2372848.047,
            "minimum": 2372374.567,
            "name": "Y",
            "position": 1,
            "stddev": 128.911754,
            "variance": 16618.24033
          },
          {
            "average": 1.123620055,
            "count": 1662693,
            "maximum": 1.307718761,
            "minimum": 0.9477187611,
            "name": "Z",
            "position": 2,
            "stddev": 0.03365760515,
            "variance": 0.001132834385
          },
          {
            "average": 17648.12836,
            "count": 1662693,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13141.51372,
            "variance": 172699382.8
          },
          {
            "average": 1,
            "count": 1662693,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1662693,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.49703884,
            "count": 1662693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999913818,
            "variance": 0.2499913819
          },
          {
            "average": 0.0006501500878,
            "count": 1662693,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0254897584,
            "variance": 0.0006497277835
          },
          {
            "average": 8.205551476,
            "count": 1662693,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.892956456,
            "variance": 3.583284143
          },
          {
            "average": 1.878053176,
            "count": 1662693,
            "maximum": 16.29599953,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.363639438,
            "variance": 54.22318577
          },
          {
            "average": 0.485931558,
            "count": 1662693,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998021901,
            "variance": 0.2498022292
          },
          {
            "average": 405.8348589,
            "count": 1662693,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6993302118,
            "variance": 0.4890627451
          },
          {
            "average": 220414949.3,
            "count": 1662693,
            "maximum": 220416210.2,
            "minimum": 220413951.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 407.5432541,
            "variance": 166091.5039
          },
          {
            "average": 0.485931558,
            "count": 1662693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998021901,
            "variance": 0.2498022292
          },
          {
            "average": 0,
            "count": 1662693,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1662693,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1662693,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05252262444,
            "count": 1662693,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2230785249,
            "variance": 0.04976402829
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96665.98275,
          2372374.567,
          0.9477187611,
          -96170.08275,
          2372848.047,
          1.307718761
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96665.98275430674,
                2372374.5666290075,
                0.94771876110754
              ],
              [
                -96665.98275430674,
                2372848.046629008,
                0.94771876110754
              ],
              [
                -96170.08275430674,
                2372848.046629008,
                1.30771876110754
              ],
              [
                -96170.08275430674,
                2372374.5666290075,
                1.30771876110754
              ],
              [
                -96665.98275430674,
                2372374.5666290075,
                0.94771876110754
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:30:10+00:00",
        "end_time": "2018-09-08T03:52:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2328.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2328.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2328.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2328.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6391717,
            71.33263797,
            0.9477187611,
            -156.625136,
            71.33716627,
            1.307718761
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6386583050893,
                  71.3326379713192,
                  0.94771876110754
                ],
                [
                  -156.63917165063125,
                  71.33698567889152,
                  0.94771876110754
                ],
                [
                  -156.62564674492262,
                  71.33716627223451,
                  1.30771876110754
                ],
                [
                  -156.62513602461374,
                  71.33281852421112,
                  1.30771876110754
                ],
                [
                  -156.6386583050893,
                  71.3326379713192,
                  0.94771876110754
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2328.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2328.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:30:10Z",
            "pc:count": 1662693,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96425.27911,
                "count": 1662693,
                "maximum": -96170.08275,
                "minimum": -96665.98275,
                "name": "X",
                "position": 0,
                "stddev": 135.5338695,
                "variance": 18369.42978
              },
              {
                "average": 2372615.868,
                "count": 1662693,
                "maximum": 2372848.047,
                "minimum": 2372374.567,
                "name": "Y",
                "position": 1,
                "stddev": 128.911754,
                "variance": 16618.24033
              },
              {
                "average": 1.123620055,
                "count": 1662693,
                "maximum": 1.307718761,
                "minimum": 0.9477187611,
                "name": "Z",
                "position": 2,
                "stddev": 0.03365760515,
                "variance": 0.001132834385
              },
              {
                "average": 17648.12836,
                "count": 1662693,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13141.51372,
                "variance": 172699382.8
              },
              {
                "average": 1,
                "count": 1662693,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1662693,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.49703884,
                "count": 1662693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999913818,
                "variance": 0.2499913819
              },
              {
                "average": 0.0006501500878,
                "count": 1662693,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0254897584,
                "variance": 0.0006497277835
              },
              {
                "average": 8.205551476,
                "count": 1662693,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.892956456,
                "variance": 3.583284143
              },
              {
                "average": 1.878053176,
                "count": 1662693,
                "maximum": 16.29599953,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.363639438,
                "variance": 54.22318577
              },
              {
                "average": 0.485931558,
                "count": 1662693,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998021901,
                "variance": 0.2498022292
              },
              {
                "average": 405.8348589,
                "count": 1662693,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6993302118,
                "variance": 0.4890627451
              },
              {
                "average": 220414949.3,
                "count": 1662693,
                "maximum": 220416210.2,
                "minimum": 220413951.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 407.5432541,
                "variance": 166091.5039
              },
              {
                "average": 0.485931558,
                "count": 1662693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998021901,
                "variance": 0.2498022292
              },
              {
                "average": 0,
                "count": 1662693,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1662693,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1662693,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05252262444,
                "count": 1662693,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2230785249,
                "variance": 0.04976402829
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96665.98275,
              2372374.567,
              0.9477187611,
              -96170.08275,
              2372848.047,
              1.307718761
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96665.98275430674,
                    2372374.5666290075,
                    0.94771876110754
                  ],
                  [
                    -96665.98275430674,
                    2372848.046629008,
                    0.94771876110754
                  ],
                  [
                    -96170.08275430674,
                    2372848.046629008,
                    1.30771876110754
                  ],
                  [
                    -96170.08275430674,
                    2372374.5666290075,
                    1.30771876110754
                  ],
                  [
                    -96665.98275430674,
                    2372374.5666290075,
                    0.94771876110754
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:30:10+00:00",
            "end_time": "2018-09-08T03:52:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2196.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.73035033696985,
              71.30048635949147,
              -9.561986718057751
            ],
            [
              -156.7308809051898,
              71.30483416123708,
              -9.561986718057751
            ],
            [
              -156.71737508278486,
              71.30502101766818,
              26.158013281942246
            ],
            [
              -156.71684713266572,
              71.3006731741454,
              26.158013281942246
            ],
            [
              -156.73035033696985,
              71.30048635949147,
              -9.561986718057751
            ]
          ]
        ]
      },
      "bbox": [
        -156.7308809,
        71.30048636,
        -9.561986718,
        -156.7168471,
        71.30502102,
        26.15801328
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:59Z",
        "pc:count": 3059282,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99923.08614,
            "count": 3059282,
            "maximum": -99671.09253,
            "minimum": -100167.0325,
            "name": "X",
            "position": 0,
            "stddev": 134.236541,
            "variance": 18019.44893
          },
          {
            "average": 2369254.14,
            "count": 3059282,
            "maximum": 2369487.837,
            "minimum": 2369014.217,
            "name": "Y",
            "position": 1,
            "stddev": 128.9266754,
            "variance": 16622.08763
          },
          {
            "average": 6.88934028,
            "count": 3059282,
            "maximum": 26.15801328,
            "minimum": -9.561986718,
            "name": "Z",
            "position": 2,
            "stddev": 1.64161227,
            "variance": 2.694890845
          },
          {
            "average": 36762.47789,
            "count": 3059282,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11060.41559,
            "variance": 122332793.1
          },
          {
            "average": 1.01555888,
            "count": 3059282,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1259756997,
            "variance": 0.01586987691
          },
          {
            "average": 1.031136391,
            "count": 3059282,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1784079818,
            "variance": 0.03182940799
          },
          {
            "average": 0.4998600979,
            "count": 3059282,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000621,
            "variance": 0.2500000621
          },
          {
            "average": 0.0004252631827,
            "count": 3059282,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02061752829,
            "variance": 0.0004250824728
          },
          {
            "average": 1.555611088,
            "count": 3059282,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.078150977,
            "variance": 1.162409529
          },
          {
            "average": -0.08047651822,
            "count": 3059282,
            "maximum": 16.31999969,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.24908631,
            "variance": 105.0437703
          },
          {
            "average": 0.4802744566,
            "count": 3059282,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996108331,
            "variance": 0.2496109845
          },
          {
            "average": 407.1541087,
            "count": 3059282,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9002534715,
            "variance": 0.810456313
          },
          {
            "average": 220415686.4,
            "count": 3059282,
            "maximum": 220416799.9,
            "minimum": 220414517.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.388933,
            "variance": 264595.9744
          },
          {
            "average": 0.4802744566,
            "count": 3059282,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996108331,
            "variance": 0.2496109845
          },
          {
            "average": 0,
            "count": 3059282,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3059282,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3059282,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2179325083,
            "count": 3059282,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4128413568,
            "variance": 0.1704379859
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100167.0325,
          2369014.217,
          -9.561986718,
          -99671.09253,
          2369487.837,
          26.15801328
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100167.03252731275,
                2369014.216798709,
                -9.561986718057751
              ],
              [
                -100167.03252731275,
                2369487.836798709,
                -9.561986718057751
              ],
              [
                -99671.09252731275,
                2369487.836798709,
                26.158013281942246
              ],
              [
                -99671.09252731275,
                2369014.216798709,
                26.158013281942246
              ],
              [
                -100167.03252731275,
                2369014.216798709,
                -9.561986718057751
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:59+00:00",
        "end_time": "2018-09-08T04:01:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2196.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2196.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2196.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2196.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7308809,
            71.30048636,
            -9.561986718,
            -156.7168471,
            71.30502102,
            26.15801328
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.73035033696985,
                  71.30048635949147,
                  -9.561986718057751
                ],
                [
                  -156.7308809051898,
                  71.30483416123708,
                  -9.561986718057751
                ],
                [
                  -156.71737508278486,
                  71.30502101766818,
                  26.158013281942246
                ],
                [
                  -156.71684713266572,
                  71.3006731741454,
                  26.158013281942246
                ],
                [
                  -156.73035033696985,
                  71.30048635949147,
                  -9.561986718057751
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2196.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2196.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:59Z",
            "pc:count": 3059282,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99923.08614,
                "count": 3059282,
                "maximum": -99671.09253,
                "minimum": -100167.0325,
                "name": "X",
                "position": 0,
                "stddev": 134.236541,
                "variance": 18019.44893
              },
              {
                "average": 2369254.14,
                "count": 3059282,
                "maximum": 2369487.837,
                "minimum": 2369014.217,
                "name": "Y",
                "position": 1,
                "stddev": 128.9266754,
                "variance": 16622.08763
              },
              {
                "average": 6.88934028,
                "count": 3059282,
                "maximum": 26.15801328,
                "minimum": -9.561986718,
                "name": "Z",
                "position": 2,
                "stddev": 1.64161227,
                "variance": 2.694890845
              },
              {
                "average": 36762.47789,
                "count": 3059282,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11060.41559,
                "variance": 122332793.1
              },
              {
                "average": 1.01555888,
                "count": 3059282,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1259756997,
                "variance": 0.01586987691
              },
              {
                "average": 1.031136391,
                "count": 3059282,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1784079818,
                "variance": 0.03182940799
              },
              {
                "average": 0.4998600979,
                "count": 3059282,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000621,
                "variance": 0.2500000621
              },
              {
                "average": 0.0004252631827,
                "count": 3059282,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02061752829,
                "variance": 0.0004250824728
              },
              {
                "average": 1.555611088,
                "count": 3059282,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.078150977,
                "variance": 1.162409529
              },
              {
                "average": -0.08047651822,
                "count": 3059282,
                "maximum": 16.31999969,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.24908631,
                "variance": 105.0437703
              },
              {
                "average": 0.4802744566,
                "count": 3059282,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996108331,
                "variance": 0.2496109845
              },
              {
                "average": 407.1541087,
                "count": 3059282,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9002534715,
                "variance": 0.810456313
              },
              {
                "average": 220415686.4,
                "count": 3059282,
                "maximum": 220416799.9,
                "minimum": 220414517.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.388933,
                "variance": 264595.9744
              },
              {
                "average": 0.4802744566,
                "count": 3059282,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996108331,
                "variance": 0.2496109845
              },
              {
                "average": 0,
                "count": 3059282,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3059282,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3059282,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2179325083,
                "count": 3059282,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4128413568,
                "variance": 0.1704379859
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100167.0325,
              2369014.217,
              -9.561986718,
              -99671.09253,
              2369487.837,
              26.15801328
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100167.03252731275,
                    2369014.216798709,
                    -9.561986718057751
                  ],
                  [
                    -100167.03252731275,
                    2369487.836798709,
                    -9.561986718057751
                  ],
                  [
                    -99671.09252731275,
                    2369487.836798709,
                    26.158013281942246
                  ],
                  [
                    -99671.09252731275,
                    2369014.216798709,
                    26.158013281942246
                  ],
                  [
                    -100167.03252731275,
                    2369014.216798709,
                    -9.561986718057751
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:59+00:00",
            "end_time": "2018-09-08T04:01:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2274.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63981213534143,
              71.31625096926477,
              2.684554424565913
            ],
            [
              -156.64032543750946,
              71.3205991079323,
              2.684554424565913
            ],
            [
              -156.6268082659922,
              71.32077978967341,
              53.844554424565914
            ],
            [
              -156.62629758618303,
              71.31643161056932,
              53.844554424565914
            ],
            [
              -156.63981213534143,
              71.31625096926477,
              2.684554424565913
            ]
          ]
        ]
      },
      "bbox": [
        -156.6403254,
        71.31625097,
        2.684554425,
        -156.6262976,
        71.32077979,
        53.84455442
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:39Z",
        "pc:count": 2978868,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96530.77117,
            "count": 2978868,
            "maximum": -96283.11795,
            "minimum": -96779.09795,
            "name": "X",
            "position": 0,
            "stddev": 136.8613433,
            "variance": 18731.02728
          },
          {
            "average": 2370825.527,
            "count": 2978868,
            "maximum": 2371067.918,
            "minimum": 2370594.338,
            "name": "Y",
            "position": 1,
            "stddev": 129.370363,
            "variance": 16736.69082
          },
          {
            "average": 3.584398758,
            "count": 2978868,
            "maximum": 53.84455442,
            "minimum": 2.684554425,
            "name": "Z",
            "position": 2,
            "stddev": 0.9736970745,
            "variance": 0.9480859928
          },
          {
            "average": 35981.77603,
            "count": 2978868,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12308.448,
            "variance": 151497892.2
          },
          {
            "average": 1.000002686,
            "count": 2978868,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001638773202,
            "variance": 2.685577609e-06
          },
          {
            "average": 1.000005371,
            "count": 2978868,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002317572176,
            "variance": 5.371140793e-06
          },
          {
            "average": 0.4983423233,
            "count": 2978868,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499997336,
            "variance": 0.249997336
          },
          {
            "average": 0.0004397643669,
            "count": 2978868,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02096595149,
            "variance": 0.0004395711217
          },
          {
            "average": 1.38866979,
            "count": 2978868,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7156697655,
            "variance": 0.5121832132
          },
          {
            "average": -0.1175021015,
            "count": 2978868,
            "maximum": 16.27799988,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.15249435,
            "variance": 103.0731416
          },
          {
            "average": 0.4578752734,
            "count": 2978868,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498222431,
            "variance": 0.2482255907
          },
          {
            "average": 409.6295539,
            "count": 2978868,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.932594786,
            "variance": 0.8697330349
          },
          {
            "average": 220417097.6,
            "count": 2978868,
            "maximum": 220417859.1,
            "minimum": 220416180.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 523.9627397,
            "variance": 274536.9526
          },
          {
            "average": 0.4578752734,
            "count": 2978868,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498222431,
            "variance": 0.2482255907
          },
          {
            "average": 0,
            "count": 2978868,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2978868,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2978868,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2098360854,
            "count": 2978868,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4071915499,
            "variance": 0.1658049583
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96779.09795,
          2370594.338,
          2.684554425,
          -96283.11795,
          2371067.918,
          53.84455442
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96779.0979520975,
                2370594.33847004,
                2.684554424565913
              ],
              [
                -96779.0979520975,
                2371067.91847004,
                2.684554424565913
              ],
              [
                -96283.11795209748,
                2371067.91847004,
                53.844554424565914
              ],
              [
                -96283.11795209748,
                2370594.33847004,
                53.844554424565914
              ],
              [
                -96779.0979520975,
                2370594.33847004,
                2.684554424565913
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:39+00:00",
        "end_time": "2018-09-08T04:29:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2274.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2274.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2274.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2274.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6403254,
            71.31625097,
            2.684554425,
            -156.6262976,
            71.32077979,
            53.84455442
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63981213534143,
                  71.31625096926477,
                  2.684554424565913
                ],
                [
                  -156.64032543750946,
                  71.3205991079323,
                  2.684554424565913
                ],
                [
                  -156.6268082659922,
                  71.32077978967341,
                  53.844554424565914
                ],
                [
                  -156.62629758618303,
                  71.31643161056932,
                  53.844554424565914
                ],
                [
                  -156.63981213534143,
                  71.31625096926477,
                  2.684554424565913
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2274.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2274.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:39Z",
            "pc:count": 2978868,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96530.77117,
                "count": 2978868,
                "maximum": -96283.11795,
                "minimum": -96779.09795,
                "name": "X",
                "position": 0,
                "stddev": 136.8613433,
                "variance": 18731.02728
              },
              {
                "average": 2370825.527,
                "count": 2978868,
                "maximum": 2371067.918,
                "minimum": 2370594.338,
                "name": "Y",
                "position": 1,
                "stddev": 129.370363,
                "variance": 16736.69082
              },
              {
                "average": 3.584398758,
                "count": 2978868,
                "maximum": 53.84455442,
                "minimum": 2.684554425,
                "name": "Z",
                "position": 2,
                "stddev": 0.9736970745,
                "variance": 0.9480859928
              },
              {
                "average": 35981.77603,
                "count": 2978868,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12308.448,
                "variance": 151497892.2
              },
              {
                "average": 1.000002686,
                "count": 2978868,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001638773202,
                "variance": 2.685577609e-06
              },
              {
                "average": 1.000005371,
                "count": 2978868,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002317572176,
                "variance": 5.371140793e-06
              },
              {
                "average": 0.4983423233,
                "count": 2978868,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499997336,
                "variance": 0.249997336
              },
              {
                "average": 0.0004397643669,
                "count": 2978868,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02096595149,
                "variance": 0.0004395711217
              },
              {
                "average": 1.38866979,
                "count": 2978868,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7156697655,
                "variance": 0.5121832132
              },
              {
                "average": -0.1175021015,
                "count": 2978868,
                "maximum": 16.27799988,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.15249435,
                "variance": 103.0731416
              },
              {
                "average": 0.4578752734,
                "count": 2978868,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498222431,
                "variance": 0.2482255907
              },
              {
                "average": 409.6295539,
                "count": 2978868,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.932594786,
                "variance": 0.8697330349
              },
              {
                "average": 220417097.6,
                "count": 2978868,
                "maximum": 220417859.1,
                "minimum": 220416180.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 523.9627397,
                "variance": 274536.9526
              },
              {
                "average": 0.4578752734,
                "count": 2978868,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498222431,
                "variance": 0.2482255907
              },
              {
                "average": 0,
                "count": 2978868,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2978868,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2978868,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2098360854,
                "count": 2978868,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4071915499,
                "variance": 0.1658049583
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96779.09795,
              2370594.338,
              2.684554425,
              -96283.11795,
              2371067.918,
              53.84455442
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96779.0979520975,
                    2370594.33847004,
                    2.684554424565913
                  ],
                  [
                    -96779.0979520975,
                    2371067.91847004,
                    2.684554424565913
                  ],
                  [
                    -96283.11795209748,
                    2371067.91847004,
                    53.844554424565914
                  ],
                  [
                    -96283.11795209748,
                    2370594.33847004,
                    53.844554424565914
                  ],
                  [
                    -96779.0979520975,
                    2370594.33847004,
                    2.684554424565913
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:39+00:00",
            "end_time": "2018-09-08T04:29:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2245.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60206334727425,
              71.30777585723503,
              2.723005069599409
            ],
            [
              -156.6025692069674,
              71.31212457821671,
              2.723005069599409
            ],
            [
              -156.58905630690984,
              71.3123026680275,
              62.78300506959941
            ],
            [
              -156.5885530683733,
              71.30795390720351,
              62.78300506959941
            ],
            [
              -156.60206334727425,
              71.30777585723503,
              2.723005069599409
            ]
          ]
        ]
      },
      "bbox": [
        -156.6025692,
        71.30777586,
        2.72300507,
        -156.5885531,
        71.31230267,
        62.78300507
      ],
      "properties": {
        "datetime": "2018-09-11T17:35:35Z",
        "pc:count": 3681675,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95191.79792,
            "count": 3681675,
            "maximum": -94936.0203,
            "minimum": -95432.0203,
            "name": "X",
            "position": 0,
            "stddev": 135.5502689,
            "variance": 18373.87539
          },
          {
            "average": 2369848.872,
            "count": 3681675,
            "maximum": 2370091.707,
            "minimum": 2369618.047,
            "name": "Y",
            "position": 1,
            "stddev": 127.5166825,
            "variance": 16260.50431
          },
          {
            "average": 4.253489393,
            "count": 3681675,
            "maximum": 62.78300507,
            "minimum": 2.72300507,
            "name": "Z",
            "position": 2,
            "stddev": 1.159627473,
            "variance": 1.344735875
          },
          {
            "average": 43466.3422,
            "count": 3681675,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9930.70825,
            "variance": 98618966.35
          },
          {
            "average": 1.00000163,
            "count": 3681675,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001276593433,
            "variance": 1.629690793e-06
          },
          {
            "average": 1.000003259,
            "count": 3681675,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001805374276,
            "variance": 3.259376275e-06
          },
          {
            "average": 0.4977584931,
            "count": 3681675,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999950435,
            "variance": 0.2499950435
          },
          {
            "average": 0.0004408319583,
            "count": 3681675,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02099137311,
            "variance": 0.0004406377451
          },
          {
            "average": 1.297991539,
            "count": 3681675,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6112810817,
            "variance": 0.3736645609
          },
          {
            "average": 2.222016309,
            "count": 3681675,
            "maximum": 20.52599907,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.97199435,
            "variance": 120.3846599
          },
          {
            "average": 0.4941786008,
            "count": 3681675,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999661781,
            "variance": 0.2499661792
          },
          {
            "average": 420.1737236,
            "count": 3681675,
            "maximum": 454,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.48411243,
            "variance": 209.789513
          },
          {
            "average": 220466301.4,
            "count": 3681675,
            "maximum": 220722535.5,
            "minimum": 220418439.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 109516.6915,
            "variance": 11993905720.0
          },
          {
            "average": 0.4941786008,
            "count": 3681675,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999661781,
            "variance": 0.2499661792
          },
          {
            "average": 0,
            "count": 3681675,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3681675,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3681675,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2331427951,
            "count": 3681675,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.42283245,
            "variance": 0.1787872807
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95432.0203,
          2369618.047,
          2.72300507,
          -94936.0203,
          2370091.707,
          62.78300507
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95432.02029732631,
                2369618.046712566,
                2.723005069599409
              ],
              [
                -95432.02029732631,
                2370091.7067125663,
                2.723005069599409
              ],
              [
                -94936.02029732631,
                2370091.7067125663,
                62.78300506959941
              ],
              [
                -94936.02029732631,
                2369618.046712566,
                62.78300506959941
              ],
              [
                -95432.02029732631,
                2369618.046712566,
                2.723005069599409
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:35:35+00:00",
        "end_time": "2018-09-08T05:07:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2245.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2245.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2245.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2245.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6025692,
            71.30777586,
            2.72300507,
            -156.5885531,
            71.31230267,
            62.78300507
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60206334727425,
                  71.30777585723503,
                  2.723005069599409
                ],
                [
                  -156.6025692069674,
                  71.31212457821671,
                  2.723005069599409
                ],
                [
                  -156.58905630690984,
                  71.3123026680275,
                  62.78300506959941
                ],
                [
                  -156.5885530683733,
                  71.30795390720351,
                  62.78300506959941
                ],
                [
                  -156.60206334727425,
                  71.30777585723503,
                  2.723005069599409
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2245.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2245.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:35:35Z",
            "pc:count": 3681675,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95191.79792,
                "count": 3681675,
                "maximum": -94936.0203,
                "minimum": -95432.0203,
                "name": "X",
                "position": 0,
                "stddev": 135.5502689,
                "variance": 18373.87539
              },
              {
                "average": 2369848.872,
                "count": 3681675,
                "maximum": 2370091.707,
                "minimum": 2369618.047,
                "name": "Y",
                "position": 1,
                "stddev": 127.5166825,
                "variance": 16260.50431
              },
              {
                "average": 4.253489393,
                "count": 3681675,
                "maximum": 62.78300507,
                "minimum": 2.72300507,
                "name": "Z",
                "position": 2,
                "stddev": 1.159627473,
                "variance": 1.344735875
              },
              {
                "average": 43466.3422,
                "count": 3681675,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9930.70825,
                "variance": 98618966.35
              },
              {
                "average": 1.00000163,
                "count": 3681675,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001276593433,
                "variance": 1.629690793e-06
              },
              {
                "average": 1.000003259,
                "count": 3681675,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001805374276,
                "variance": 3.259376275e-06
              },
              {
                "average": 0.4977584931,
                "count": 3681675,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999950435,
                "variance": 0.2499950435
              },
              {
                "average": 0.0004408319583,
                "count": 3681675,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02099137311,
                "variance": 0.0004406377451
              },
              {
                "average": 1.297991539,
                "count": 3681675,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6112810817,
                "variance": 0.3736645609
              },
              {
                "average": 2.222016309,
                "count": 3681675,
                "maximum": 20.52599907,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.97199435,
                "variance": 120.3846599
              },
              {
                "average": 0.4941786008,
                "count": 3681675,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999661781,
                "variance": 0.2499661792
              },
              {
                "average": 420.1737236,
                "count": 3681675,
                "maximum": 454,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.48411243,
                "variance": 209.789513
              },
              {
                "average": 220466301.4,
                "count": 3681675,
                "maximum": 220722535.5,
                "minimum": 220418439.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 109516.6915,
                "variance": 11993905720.0
              },
              {
                "average": 0.4941786008,
                "count": 3681675,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999661781,
                "variance": 0.2499661792
              },
              {
                "average": 0,
                "count": 3681675,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3681675,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3681675,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2331427951,
                "count": 3681675,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.42283245,
                "variance": 0.1787872807
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95432.0203,
              2369618.047,
              2.72300507,
              -94936.0203,
              2370091.707,
              62.78300507
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95432.02029732631,
                    2369618.046712566,
                    2.723005069599409
                  ],
                  [
                    -95432.02029732631,
                    2370091.7067125663,
                    2.723005069599409
                  ],
                  [
                    -94936.02029732631,
                    2370091.7067125663,
                    62.78300506959941
                  ],
                  [
                    -94936.02029732631,
                    2369618.046712566,
                    62.78300506959941
                  ],
                  [
                    -95432.02029732631,
                    2369618.046712566,
                    2.723005069599409
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:35:35+00:00",
            "end_time": "2018-09-08T05:07:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2233.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.75536201216462,
              71.30885117407644,
              0.864273679808111
            ],
            [
              -156.7558932492572,
              71.31316353419801,
              0.864273679808111
            ],
            [
              -156.74238424394264,
              71.31335209304197,
              1.464273679808111
            ],
            [
              -156.7418556049642,
              71.30903969108608,
              1.464273679808111
            ],
            [
              -156.75536201216462,
              71.30885117407644,
              0.864273679808111
            ]
          ]
        ]
      },
      "bbox": [
        -156.7558932,
        71.30885117,
        0.8642736798,
        -156.7418556,
        71.31335209,
        1.46427368
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:02Z",
        "pc:count": 1941946,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100798.3561,
            "count": 1941946,
            "maximum": -100550.4573,
            "minimum": -101046.3373,
            "name": "X",
            "position": 0,
            "stddev": 135.02565,
            "variance": 18231.92617
          },
          {
            "average": 2370202.066,
            "count": 1941946,
            "maximum": 2370431.494,
            "minimum": 2369961.754,
            "name": "Y",
            "position": 1,
            "stddev": 126.5867978,
            "variance": 16024.21738
          },
          {
            "average": 1.154432294,
            "count": 1941946,
            "maximum": 1.46427368,
            "minimum": 0.8642736798,
            "name": "Z",
            "position": 2,
            "stddev": 0.05921604653,
            "variance": 0.003506540167
          },
          {
            "average": 14959.94813,
            "count": 1941946,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10960.32629,
            "variance": 120128752.3
          },
          {
            "average": 1,
            "count": 1941946,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1941946,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4934508993,
            "count": 1941946,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999572362,
            "variance": 0.249957238
          },
          {
            "average": 0.0005231865356,
            "count": 1941946,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02286729282,
            "variance": 0.0005229130807
          },
          {
            "average": 7.767734015,
            "count": 1941946,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.423798927,
            "variance": 5.874801239
          },
          {
            "average": 2.980177572,
            "count": 1941946,
            "maximum": 16.21800041,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.818335663,
            "variance": 46.48970121
          },
          {
            "average": 0.4860799425,
            "count": 1941946,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998063231,
            "variance": 0.2498063606
          },
          {
            "average": 403.655321,
            "count": 1941946,
            "maximum": 406,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6714221641,
            "variance": 0.4508077224
          },
          {
            "average": 220413725.6,
            "count": 1941946,
            "maximum": 220415002.4,
            "minimum": 220412775.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 354.7085947,
            "variance": 125818.1871
          },
          {
            "average": 0.4860799425,
            "count": 1941946,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998063231,
            "variance": 0.2498063606
          },
          {
            "average": 0,
            "count": 1941946,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1941946,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1941946,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04276792455,
            "count": 1941946,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2023335124,
            "variance": 0.04093885026
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101046.3373,
          2369961.754,
          0.8642736798,
          -100550.4573,
          2370431.494,
          1.46427368
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101046.33730136522,
                2369961.7544314614,
                0.864273679808111
              ],
              [
                -101046.33730136522,
                2370431.4944314617,
                0.864273679808111
              ],
              [
                -100550.45730136521,
                2370431.4944314617,
                1.464273679808111
              ],
              [
                -100550.45730136521,
                2369961.7544314614,
                1.464273679808111
              ],
              [
                -101046.33730136522,
                2369961.7544314614,
                0.864273679808111
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:02+00:00",
        "end_time": "2018-09-08T03:32:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2233.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2233.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2233.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2233.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7558932,
            71.30885117,
            0.8642736798,
            -156.7418556,
            71.31335209,
            1.46427368
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.75536201216462,
                  71.30885117407644,
                  0.864273679808111
                ],
                [
                  -156.7558932492572,
                  71.31316353419801,
                  0.864273679808111
                ],
                [
                  -156.74238424394264,
                  71.31335209304197,
                  1.464273679808111
                ],
                [
                  -156.7418556049642,
                  71.30903969108608,
                  1.464273679808111
                ],
                [
                  -156.75536201216462,
                  71.30885117407644,
                  0.864273679808111
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2233.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2233.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:02Z",
            "pc:count": 1941946,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100798.3561,
                "count": 1941946,
                "maximum": -100550.4573,
                "minimum": -101046.3373,
                "name": "X",
                "position": 0,
                "stddev": 135.02565,
                "variance": 18231.92617
              },
              {
                "average": 2370202.066,
                "count": 1941946,
                "maximum": 2370431.494,
                "minimum": 2369961.754,
                "name": "Y",
                "position": 1,
                "stddev": 126.5867978,
                "variance": 16024.21738
              },
              {
                "average": 1.154432294,
                "count": 1941946,
                "maximum": 1.46427368,
                "minimum": 0.8642736798,
                "name": "Z",
                "position": 2,
                "stddev": 0.05921604653,
                "variance": 0.003506540167
              },
              {
                "average": 14959.94813,
                "count": 1941946,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10960.32629,
                "variance": 120128752.3
              },
              {
                "average": 1,
                "count": 1941946,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1941946,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4934508993,
                "count": 1941946,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999572362,
                "variance": 0.249957238
              },
              {
                "average": 0.0005231865356,
                "count": 1941946,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02286729282,
                "variance": 0.0005229130807
              },
              {
                "average": 7.767734015,
                "count": 1941946,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.423798927,
                "variance": 5.874801239
              },
              {
                "average": 2.980177572,
                "count": 1941946,
                "maximum": 16.21800041,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.818335663,
                "variance": 46.48970121
              },
              {
                "average": 0.4860799425,
                "count": 1941946,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998063231,
                "variance": 0.2498063606
              },
              {
                "average": 403.655321,
                "count": 1941946,
                "maximum": 406,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6714221641,
                "variance": 0.4508077224
              },
              {
                "average": 220413725.6,
                "count": 1941946,
                "maximum": 220415002.4,
                "minimum": 220412775.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 354.7085947,
                "variance": 125818.1871
              },
              {
                "average": 0.4860799425,
                "count": 1941946,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998063231,
                "variance": 0.2498063606
              },
              {
                "average": 0,
                "count": 1941946,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1941946,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1941946,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04276792455,
                "count": 1941946,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2023335124,
                "variance": 0.04093885026
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101046.3373,
              2369961.754,
              0.8642736798,
              -100550.4573,
              2370431.494,
              1.46427368
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101046.33730136522,
                    2369961.7544314614,
                    0.864273679808111
                  ],
                  [
                    -101046.33730136522,
                    2370431.4944314617,
                    0.864273679808111
                  ],
                  [
                    -100550.45730136521,
                    2370431.4944314617,
                    1.464273679808111
                  ],
                  [
                    -100550.45730136521,
                    2369961.7544314614,
                    1.464273679808111
                  ],
                  [
                    -101046.33730136522,
                    2369961.7544314614,
                    0.864273679808111
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:02+00:00",
            "end_time": "2018-09-08T03:32:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2301.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66480729152536,
              71.3246274348075,
              -8.653077480975663
            ],
            [
              -156.6653253388495,
              71.3289731844121,
              -8.653077480975663
            ],
            [
              -156.6518049445294,
              71.32915556861444,
              21.106922519024337
            ],
            [
              -156.65128951950197,
              71.32480977819493,
              21.106922519024337
            ],
            [
              -156.66480729152536,
              71.3246274348075,
              -8.653077480975663
            ]
          ]
        ]
      },
      "bbox": [
        -156.6653253,
        71.32462743,
        -8.653077481,
        -156.6512895,
        71.32915557,
        21.10692252
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:48Z",
        "pc:count": 1641305,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97424.0896,
            "count": 1641305,
            "maximum": -97162.47599,
            "minimum": -97658.39599,
            "name": "X",
            "position": 0,
            "stddev": 138.60003,
            "variance": 19209.96832
          },
          {
            "average": 2371776.521,
            "count": 1641305,
            "maximum": 2372015.096,
            "minimum": 2371541.796,
            "name": "Y",
            "position": 1,
            "stddev": 129.599435,
            "variance": 16796.01355
          },
          {
            "average": 1.520613289,
            "count": 1641305,
            "maximum": 21.10692252,
            "minimum": -8.653077481,
            "name": "Z",
            "position": 2,
            "stddev": 0.1554267257,
            "variance": 0.02415746705
          },
          {
            "average": 20304.73404,
            "count": 1641305,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15095.87928,
            "variance": 227885571.3
          },
          {
            "average": 1.000035338,
            "count": 1641305,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005944451789,
            "variance": 3.533650708e-05
          },
          {
            "average": 1.000070675,
            "count": 1641305,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.008406575798,
            "variance": 7.067051664e-05
          },
          {
            "average": 0.5002988476,
            "count": 1641305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.500000063,
            "variance": 0.250000063
          },
          {
            "average": 0.0006543573559,
            "count": 1641305,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02557204667,
            "variance": 0.0006539295708
          },
          {
            "average": 7.990734812,
            "count": 1641305,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.279969455,
            "variance": 5.198260715
          },
          {
            "average": 0.6961496798,
            "count": 1641305,
            "maximum": 16.37400055,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.204184971,
            "variance": 51.9002811
          },
          {
            "average": 0.4873311176,
            "count": 1641305,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998396259,
            "variance": 0.2498396516
          },
          {
            "average": 405.9482065,
            "count": 1641305,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6870343539,
            "variance": 0.4720162034
          },
          {
            "average": 220415015.4,
            "count": 1641305,
            "maximum": 220416188.3,
            "minimum": 220413930.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 390.3919399,
            "variance": 152405.8668
          },
          {
            "average": 0.4873311176,
            "count": 1641305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998396259,
            "variance": 0.2498396516
          },
          {
            "average": 0,
            "count": 1641305,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1641305,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1641305,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03993103049,
            "count": 1641305,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1957972591,
            "variance": 0.03833656665
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97658.39599,
          2371541.796,
          -8.653077481,
          -97162.47599,
          2372015.096,
          21.10692252
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97658.39599327267,
                2371541.7960932506,
                -8.653077480975663
              ],
              [
                -97658.39599327267,
                2372015.0960932504,
                -8.653077480975663
              ],
              [
                -97162.47599327266,
                2372015.0960932504,
                21.106922519024337
              ],
              [
                -97162.47599327266,
                2371541.7960932506,
                21.106922519024337
              ],
              [
                -97658.39599327267,
                2371541.7960932506,
                -8.653077480975663
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:48+00:00",
        "end_time": "2018-09-08T03:52:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2301.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2301.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2301.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2301.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6653253,
            71.32462743,
            -8.653077481,
            -156.6512895,
            71.32915557,
            21.10692252
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66480729152536,
                  71.3246274348075,
                  -8.653077480975663
                ],
                [
                  -156.6653253388495,
                  71.3289731844121,
                  -8.653077480975663
                ],
                [
                  -156.6518049445294,
                  71.32915556861444,
                  21.106922519024337
                ],
                [
                  -156.65128951950197,
                  71.32480977819493,
                  21.106922519024337
                ],
                [
                  -156.66480729152536,
                  71.3246274348075,
                  -8.653077480975663
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2301.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2301.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:48Z",
            "pc:count": 1641305,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97424.0896,
                "count": 1641305,
                "maximum": -97162.47599,
                "minimum": -97658.39599,
                "name": "X",
                "position": 0,
                "stddev": 138.60003,
                "variance": 19209.96832
              },
              {
                "average": 2371776.521,
                "count": 1641305,
                "maximum": 2372015.096,
                "minimum": 2371541.796,
                "name": "Y",
                "position": 1,
                "stddev": 129.599435,
                "variance": 16796.01355
              },
              {
                "average": 1.520613289,
                "count": 1641305,
                "maximum": 21.10692252,
                "minimum": -8.653077481,
                "name": "Z",
                "position": 2,
                "stddev": 0.1554267257,
                "variance": 0.02415746705
              },
              {
                "average": 20304.73404,
                "count": 1641305,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15095.87928,
                "variance": 227885571.3
              },
              {
                "average": 1.000035338,
                "count": 1641305,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005944451789,
                "variance": 3.533650708e-05
              },
              {
                "average": 1.000070675,
                "count": 1641305,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.008406575798,
                "variance": 7.067051664e-05
              },
              {
                "average": 0.5002988476,
                "count": 1641305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.500000063,
                "variance": 0.250000063
              },
              {
                "average": 0.0006543573559,
                "count": 1641305,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02557204667,
                "variance": 0.0006539295708
              },
              {
                "average": 7.990734812,
                "count": 1641305,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.279969455,
                "variance": 5.198260715
              },
              {
                "average": 0.6961496798,
                "count": 1641305,
                "maximum": 16.37400055,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.204184971,
                "variance": 51.9002811
              },
              {
                "average": 0.4873311176,
                "count": 1641305,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998396259,
                "variance": 0.2498396516
              },
              {
                "average": 405.9482065,
                "count": 1641305,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6870343539,
                "variance": 0.4720162034
              },
              {
                "average": 220415015.4,
                "count": 1641305,
                "maximum": 220416188.3,
                "minimum": 220413930.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 390.3919399,
                "variance": 152405.8668
              },
              {
                "average": 0.4873311176,
                "count": 1641305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998396259,
                "variance": 0.2498396516
              },
              {
                "average": 0,
                "count": 1641305,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1641305,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1641305,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03993103049,
                "count": 1641305,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1957972591,
                "variance": 0.03833656665
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97658.39599,
              2371541.796,
              -8.653077481,
              -97162.47599,
              2372015.096,
              21.10692252
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97658.39599327267,
                    2371541.7960932506,
                    -8.653077480975663
                  ],
                  [
                    -97658.39599327267,
                    2372015.0960932504,
                    -8.653077480975663
                  ],
                  [
                    -97162.47599327266,
                    2372015.0960932504,
                    21.106922519024337
                  ],
                  [
                    -97162.47599327266,
                    2371541.7960932506,
                    21.106922519024337
                  ],
                  [
                    -97658.39599327267,
                    2371541.7960932506,
                    -8.653077480975663
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:48+00:00",
            "end_time": "2018-09-08T03:52:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2397.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.49576653214922,
              71.36046846345224,
              0.822416486191754
            ],
            [
              -156.49622767969717,
              71.36459360986242,
              0.822416486191754
            ],
            [
              -156.4835686732774,
              71.36475331424079,
              19.38241648619175
            ],
            [
              -156.48310985995377,
              71.360628133835,
              19.38241648619175
            ],
            [
              -156.49576653214922,
              71.36046846345224,
              0.822416486191754
            ]
          ]
        ]
      },
      "bbox": [
        -156.4962277,
        71.36046846,
        0.8224164862,
        -156.4831099,
        71.36475331,
        19.38241649
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:49Z",
        "pc:count": 803315,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91159.29795,
            "count": 803315,
            "maximum": -90856.43157,
            "minimum": -91319.97157,
            "name": "X",
            "position": 0,
            "stddev": 108.1799895,
            "variance": 11702.91013
          },
          {
            "average": 2375457.961,
            "count": 803315,
            "maximum": 2375647.388,
            "minimum": 2375198.268,
            "name": "Y",
            "position": 1,
            "stddev": 118.7056386,
            "variance": 14091.02863
          },
          {
            "average": 1.125330636,
            "count": 803315,
            "maximum": 19.38241649,
            "minimum": 0.8224164862,
            "name": "Z",
            "position": 2,
            "stddev": 0.07198593413,
            "variance": 0.005181974713
          },
          {
            "average": 13865.55564,
            "count": 803315,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10979.1912,
            "variance": 120542639.4
          },
          {
            "average": 1.000001245,
            "count": 803315,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001115724736,
            "variance": 1.244841687e-06
          },
          {
            "average": 1.00000249,
            "count": 803315,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001577872072,
            "variance": 2.489680275e-06
          },
          {
            "average": 0.5033031874,
            "count": 803315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999894,
            "variance": 0.2499894002
          },
          {
            "average": 0.0006149517935,
            "count": 803315,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02479061098,
            "variance": 0.0006145743928
          },
          {
            "average": 7.434624027,
            "count": 803315,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.681254976,
            "variance": 7.189128245
          },
          {
            "average": -0.7010629106,
            "count": 803315,
            "maximum": 16.3560009,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.416510045,
            "variance": 70.83764134
          },
          {
            "average": 0.4841027492,
            "count": 803315,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997475246,
            "variance": 0.2497475883
          },
          {
            "average": 408.8952516,
            "count": 803315,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7307344346,
            "variance": 0.5339728139
          },
          {
            "average": 220416689.8,
            "count": 803315,
            "maximum": 220417449.1,
            "minimum": 220415461.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 421.7870517,
            "variance": 177904.317
          },
          {
            "average": 0.4841027492,
            "count": 803315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997475246,
            "variance": 0.2497475883
          },
          {
            "average": 0,
            "count": 803315,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 803315,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 803315,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06333256568,
            "count": 803315,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2435603121,
            "variance": 0.05932162565
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91319.97157,
          2375198.268,
          0.8224164862,
          -90856.43157,
          2375647.388,
          19.38241649
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91319.97157149976,
                2375198.26780399,
                0.822416486191754
              ],
              [
                -91319.97157149976,
                2375647.38780399,
                0.822416486191754
              ],
              [
                -90856.43157149975,
                2375647.38780399,
                19.38241648619175
              ],
              [
                -90856.43157149975,
                2375198.26780399,
                19.38241648619175
              ],
              [
                -91319.97157149976,
                2375198.26780399,
                0.822416486191754
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:49+00:00",
        "end_time": "2018-09-08T04:17:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2397.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2397.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2397.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2397.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4962277,
            71.36046846,
            0.8224164862,
            -156.4831099,
            71.36475331,
            19.38241649
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.49576653214922,
                  71.36046846345224,
                  0.822416486191754
                ],
                [
                  -156.49622767969717,
                  71.36459360986242,
                  0.822416486191754
                ],
                [
                  -156.4835686732774,
                  71.36475331424079,
                  19.38241648619175
                ],
                [
                  -156.48310985995377,
                  71.360628133835,
                  19.38241648619175
                ],
                [
                  -156.49576653214922,
                  71.36046846345224,
                  0.822416486191754
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2397.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2397.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:49Z",
            "pc:count": 803315,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91159.29795,
                "count": 803315,
                "maximum": -90856.43157,
                "minimum": -91319.97157,
                "name": "X",
                "position": 0,
                "stddev": 108.1799895,
                "variance": 11702.91013
              },
              {
                "average": 2375457.961,
                "count": 803315,
                "maximum": 2375647.388,
                "minimum": 2375198.268,
                "name": "Y",
                "position": 1,
                "stddev": 118.7056386,
                "variance": 14091.02863
              },
              {
                "average": 1.125330636,
                "count": 803315,
                "maximum": 19.38241649,
                "minimum": 0.8224164862,
                "name": "Z",
                "position": 2,
                "stddev": 0.07198593413,
                "variance": 0.005181974713
              },
              {
                "average": 13865.55564,
                "count": 803315,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10979.1912,
                "variance": 120542639.4
              },
              {
                "average": 1.000001245,
                "count": 803315,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001115724736,
                "variance": 1.244841687e-06
              },
              {
                "average": 1.00000249,
                "count": 803315,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001577872072,
                "variance": 2.489680275e-06
              },
              {
                "average": 0.5033031874,
                "count": 803315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999894,
                "variance": 0.2499894002
              },
              {
                "average": 0.0006149517935,
                "count": 803315,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02479061098,
                "variance": 0.0006145743928
              },
              {
                "average": 7.434624027,
                "count": 803315,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.681254976,
                "variance": 7.189128245
              },
              {
                "average": -0.7010629106,
                "count": 803315,
                "maximum": 16.3560009,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.416510045,
                "variance": 70.83764134
              },
              {
                "average": 0.4841027492,
                "count": 803315,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997475246,
                "variance": 0.2497475883
              },
              {
                "average": 408.8952516,
                "count": 803315,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7307344346,
                "variance": 0.5339728139
              },
              {
                "average": 220416689.8,
                "count": 803315,
                "maximum": 220417449.1,
                "minimum": 220415461.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 421.7870517,
                "variance": 177904.317
              },
              {
                "average": 0.4841027492,
                "count": 803315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997475246,
                "variance": 0.2497475883
              },
              {
                "average": 0,
                "count": 803315,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 803315,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 803315,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06333256568,
                "count": 803315,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2435603121,
                "variance": 0.05932162565
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91319.97157,
              2375198.268,
              0.8224164862,
              -90856.43157,
              2375647.388,
              19.38241649
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91319.97157149976,
                    2375198.26780399,
                    0.822416486191754
                  ],
                  [
                    -91319.97157149976,
                    2375647.38780399,
                    0.822416486191754
                  ],
                  [
                    -90856.43157149975,
                    2375647.38780399,
                    19.38241648619175
                  ],
                  [
                    -90856.43157149975,
                    2375198.26780399,
                    19.38241648619175
                  ],
                  [
                    -91319.97157149976,
                    2375198.26780399,
                    0.822416486191754
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:49+00:00",
            "end_time": "2018-09-08T04:17:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2385.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.52167327531265,
              71.35635366591472,
              0.828462233083229
            ],
            [
              -156.52216420698744,
              71.36070072135323,
              0.828462233083229
            ],
            [
              -156.50861746679635,
              71.36087340217053,
              473.02846223308325
            ],
            [
              -156.5081291669232,
              71.35652630800598,
              473.02846223308325
            ],
            [
              -156.52167327531265,
              71.35635366591472,
              0.828462233083229
            ]
          ]
        ]
      },
      "bbox": [
        -156.5221642,
        71.35635367,
        0.8284622331,
        -156.5081292,
        71.3608734,
        473.0284622
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:32Z",
        "pc:count": 2412848,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92056.10055,
            "count": 2412848,
            "maximum": -91788.29972,
            "minimum": -92284.43972,
            "name": "X",
            "position": 0,
            "stddev": 133.2007538,
            "variance": 17742.44081
          },
          {
            "average": 2375044.039,
            "count": 2412848,
            "maximum": 2375260.009,
            "minimum": 2374786.709,
            "name": "Y",
            "position": 1,
            "stddev": 128.5717457,
            "variance": 16530.6938
          },
          {
            "average": 1.396722463,
            "count": 2412848,
            "maximum": 473.0284622,
            "minimum": 0.8284622331,
            "name": "Z",
            "position": 2,
            "stddev": 0.4437632115,
            "variance": 0.1969257879
          },
          {
            "average": 19153.86441,
            "count": 2412848,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9766.056838,
            "variance": 95375866.16
          },
          {
            "average": 1.000000414,
            "count": 2412848,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006437763497,
            "variance": 4.144479884e-07
          },
          {
            "average": 1.000000829,
            "count": 2412848,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009104370562,
            "variance": 8.288956333e-07
          },
          {
            "average": 0.5045004907,
            "count": 2412848,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999798488,
            "variance": 0.2499798492
          },
          {
            "average": 0.0004455315876,
            "count": 2412848,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02110292098,
            "variance": 0.0004453332737
          },
          {
            "average": 3.842618764,
            "count": 2412848,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.700857141,
            "variance": 13.69634358
          },
          {
            "average": -0.4185525556,
            "count": 2412848,
            "maximum": 16.48200035,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.708502468,
            "variance": 94.25502018
          },
          {
            "average": 0.5019288409,
            "count": 2412848,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999963832,
            "variance": 0.2499963832
          },
          {
            "average": 408.1699593,
            "count": 2412848,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8383008251,
            "variance": 0.7027482734
          },
          {
            "average": 220416237.3,
            "count": 2412848,
            "maximum": 220417432.7,
            "minimum": 220415474.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 489.6921312,
            "variance": 239798.3834
          },
          {
            "average": 0.5019288409,
            "count": 2412848,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999963832,
            "variance": 0.2499963832
          },
          {
            "average": 0,
            "count": 2412848,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2412848,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2412848,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.185137232,
            "count": 2412848,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3884089338,
            "variance": 0.1508614999
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92284.43972,
          2374786.709,
          0.8284622331,
          -91788.29972,
          2375260.009,
          473.0284622
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92284.43972438383,
                2374786.709415021,
                0.828462233083229
              ],
              [
                -92284.43972438383,
                2375260.0094150207,
                0.828462233083229
              ],
              [
                -91788.29972438382,
                2375260.0094150207,
                473.02846223308325
              ],
              [
                -91788.29972438382,
                2374786.709415021,
                473.02846223308325
              ],
              [
                -92284.43972438383,
                2374786.709415021,
                0.828462233083229
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:32+00:00",
        "end_time": "2018-09-08T04:17:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2385.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2385.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2385.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2385.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5221642,
            71.35635367,
            0.8284622331,
            -156.5081292,
            71.3608734,
            473.0284622
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.52167327531265,
                  71.35635366591472,
                  0.828462233083229
                ],
                [
                  -156.52216420698744,
                  71.36070072135323,
                  0.828462233083229
                ],
                [
                  -156.50861746679635,
                  71.36087340217053,
                  473.02846223308325
                ],
                [
                  -156.5081291669232,
                  71.35652630800598,
                  473.02846223308325
                ],
                [
                  -156.52167327531265,
                  71.35635366591472,
                  0.828462233083229
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2385.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2385.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:32Z",
            "pc:count": 2412848,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92056.10055,
                "count": 2412848,
                "maximum": -91788.29972,
                "minimum": -92284.43972,
                "name": "X",
                "position": 0,
                "stddev": 133.2007538,
                "variance": 17742.44081
              },
              {
                "average": 2375044.039,
                "count": 2412848,
                "maximum": 2375260.009,
                "minimum": 2374786.709,
                "name": "Y",
                "position": 1,
                "stddev": 128.5717457,
                "variance": 16530.6938
              },
              {
                "average": 1.396722463,
                "count": 2412848,
                "maximum": 473.0284622,
                "minimum": 0.8284622331,
                "name": "Z",
                "position": 2,
                "stddev": 0.4437632115,
                "variance": 0.1969257879
              },
              {
                "average": 19153.86441,
                "count": 2412848,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9766.056838,
                "variance": 95375866.16
              },
              {
                "average": 1.000000414,
                "count": 2412848,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006437763497,
                "variance": 4.144479884e-07
              },
              {
                "average": 1.000000829,
                "count": 2412848,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009104370562,
                "variance": 8.288956333e-07
              },
              {
                "average": 0.5045004907,
                "count": 2412848,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999798488,
                "variance": 0.2499798492
              },
              {
                "average": 0.0004455315876,
                "count": 2412848,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02110292098,
                "variance": 0.0004453332737
              },
              {
                "average": 3.842618764,
                "count": 2412848,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.700857141,
                "variance": 13.69634358
              },
              {
                "average": -0.4185525556,
                "count": 2412848,
                "maximum": 16.48200035,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.708502468,
                "variance": 94.25502018
              },
              {
                "average": 0.5019288409,
                "count": 2412848,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999963832,
                "variance": 0.2499963832
              },
              {
                "average": 408.1699593,
                "count": 2412848,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8383008251,
                "variance": 0.7027482734
              },
              {
                "average": 220416237.3,
                "count": 2412848,
                "maximum": 220417432.7,
                "minimum": 220415474.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 489.6921312,
                "variance": 239798.3834
              },
              {
                "average": 0.5019288409,
                "count": 2412848,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999963832,
                "variance": 0.2499963832
              },
              {
                "average": 0,
                "count": 2412848,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2412848,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2412848,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.185137232,
                "count": 2412848,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3884089338,
                "variance": 0.1508614999
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92284.43972,
              2374786.709,
              0.8284622331,
              -91788.29972,
              2375260.009,
              473.0284622
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92284.43972438383,
                    2374786.709415021,
                    0.828462233083229
                  ],
                  [
                    -92284.43972438383,
                    2375260.0094150207,
                    0.828462233083229
                  ],
                  [
                    -91788.29972438382,
                    2375260.0094150207,
                    473.02846223308325
                  ],
                  [
                    -91788.29972438382,
                    2374786.709415021,
                    473.02846223308325
                  ],
                  [
                    -92284.43972438383,
                    2374786.709415021,
                    0.828462233083229
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:32+00:00",
            "end_time": "2018-09-08T04:17:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2398.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.41338093158924,
              71.36208020495847,
              0.855315703509888
            ],
            [
              -156.41358143216107,
              71.36393510578282,
              0.855315703509888
            ],
            [
              -156.40580087357375,
              71.3640301019859,
              1.415315703509888
            ],
            [
              -156.40560101821396,
              71.3621751920681,
              1.415315703509888
            ],
            [
              -156.41338093158924,
              71.36208020495847,
              0.855315703509888
            ]
          ]
        ]
      },
      "bbox": [
        -156.4135814,
        71.3620802,
        0.8553157035,
        -156.405601,
        71.3640301,
        1.415315704
      ],
      "properties": {
        "datetime": "2018-09-08T05:46:09Z",
        "pc:count": 188884,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88114.38758,
            "count": 188884,
            "maximum": -88015.56539,
            "minimum": -88300.46539,
            "name": "X",
            "position": 0,
            "stddev": 64.93809731,
            "variance": 4216.956482
          },
          {
            "average": 2375392.666,
            "count": 188884,
            "maximum": 2375464.029,
            "minimum": 2375262.089,
            "name": "Y",
            "position": 1,
            "stddev": 44.82008981,
            "variance": 2008.84045
          },
          {
            "average": 1.1565292,
            "count": 188884,
            "maximum": 1.415315704,
            "minimum": 0.8553157035,
            "name": "Z",
            "position": 2,
            "stddev": 0.05487092214,
            "variance": 0.003010818097
          },
          {
            "average": 14923.20934,
            "count": 188884,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12009.9469,
            "variance": 144238824.6
          },
          {
            "average": 1,
            "count": 188884,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 188884,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5077878486,
            "count": 188884,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999406691,
            "variance": 0.2499406727
          },
          {
            "average": 0.0007306071451,
            "count": 188884,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02701994122,
            "variance": 0.0007300772235
          },
          {
            "average": 7.699042799,
            "count": 188884,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.445403253,
            "variance": 5.979997072
          },
          {
            "average": -1.5904005,
            "count": 188884,
            "maximum": 16.22999954,
            "minimum": -15.45600033,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.452177736,
            "variance": 55.534953
          },
          {
            "average": 0.4794371148,
            "count": 188884,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995783113,
            "variance": 0.2495784891
          },
          {
            "average": 414.1133606,
            "count": 188884,
            "maximum": 416,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6538965429,
            "variance": 0.4275806888
          },
          {
            "average": 220419584.3,
            "count": 188884,
            "maximum": 220420769.6,
            "minimum": 220418789.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 360.2333825,
            "variance": 129768.0899
          },
          {
            "average": 0.4794371148,
            "count": 188884,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995783113,
            "variance": 0.2495784891
          },
          {
            "average": 0,
            "count": 188884,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 188884,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 188884,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07685669511,
            "count": 188884,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2663646357,
            "variance": 0.07095011916
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88300.46539,
          2375262.089,
          0.8553157035,
          -88015.56539,
          2375464.029,
          1.415315704
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88300.4653936469,
                2375262.088720472,
                0.855315703509888
              ],
              [
                -88300.4653936469,
                2375464.0287204725,
                0.855315703509888
              ],
              [
                -88015.5653936469,
                2375464.0287204725,
                1.415315703509888
              ],
              [
                -88015.5653936469,
                2375262.088720472,
                1.415315703509888
              ],
              [
                -88300.4653936469,
                2375262.088720472,
                0.855315703509888
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:46:09+00:00",
        "end_time": "2018-09-08T05:13:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2398.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2398.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2398.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2398.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4135814,
            71.3620802,
            0.8553157035,
            -156.405601,
            71.3640301,
            1.415315704
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.41338093158924,
                  71.36208020495847,
                  0.855315703509888
                ],
                [
                  -156.41358143216107,
                  71.36393510578282,
                  0.855315703509888
                ],
                [
                  -156.40580087357375,
                  71.3640301019859,
                  1.415315703509888
                ],
                [
                  -156.40560101821396,
                  71.3621751920681,
                  1.415315703509888
                ],
                [
                  -156.41338093158924,
                  71.36208020495847,
                  0.855315703509888
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2398.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2398.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:46:09Z",
            "pc:count": 188884,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88114.38758,
                "count": 188884,
                "maximum": -88015.56539,
                "minimum": -88300.46539,
                "name": "X",
                "position": 0,
                "stddev": 64.93809731,
                "variance": 4216.956482
              },
              {
                "average": 2375392.666,
                "count": 188884,
                "maximum": 2375464.029,
                "minimum": 2375262.089,
                "name": "Y",
                "position": 1,
                "stddev": 44.82008981,
                "variance": 2008.84045
              },
              {
                "average": 1.1565292,
                "count": 188884,
                "maximum": 1.415315704,
                "minimum": 0.8553157035,
                "name": "Z",
                "position": 2,
                "stddev": 0.05487092214,
                "variance": 0.003010818097
              },
              {
                "average": 14923.20934,
                "count": 188884,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12009.9469,
                "variance": 144238824.6
              },
              {
                "average": 1,
                "count": 188884,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 188884,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5077878486,
                "count": 188884,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999406691,
                "variance": 0.2499406727
              },
              {
                "average": 0.0007306071451,
                "count": 188884,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02701994122,
                "variance": 0.0007300772235
              },
              {
                "average": 7.699042799,
                "count": 188884,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.445403253,
                "variance": 5.979997072
              },
              {
                "average": -1.5904005,
                "count": 188884,
                "maximum": 16.22999954,
                "minimum": -15.45600033,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.452177736,
                "variance": 55.534953
              },
              {
                "average": 0.4794371148,
                "count": 188884,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995783113,
                "variance": 0.2495784891
              },
              {
                "average": 414.1133606,
                "count": 188884,
                "maximum": 416,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6538965429,
                "variance": 0.4275806888
              },
              {
                "average": 220419584.3,
                "count": 188884,
                "maximum": 220420769.6,
                "minimum": 220418789.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 360.2333825,
                "variance": 129768.0899
              },
              {
                "average": 0.4794371148,
                "count": 188884,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995783113,
                "variance": 0.2495784891
              },
              {
                "average": 0,
                "count": 188884,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 188884,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 188884,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07685669511,
                "count": 188884,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2663646357,
                "variance": 0.07095011916
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88300.46539,
              2375262.089,
              0.8553157035,
              -88015.56539,
              2375464.029,
              1.415315704
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88300.4653936469,
                    2375262.088720472,
                    0.855315703509888
                  ],
                  [
                    -88300.4653936469,
                    2375464.0287204725,
                    0.855315703509888
                  ],
                  [
                    -88015.5653936469,
                    2375464.0287204725,
                    1.415315703509888
                  ],
                  [
                    -88015.5653936469,
                    2375262.088720472,
                    1.415315703509888
                  ],
                  [
                    -88300.4653936469,
                    2375262.088720472,
                    0.855315703509888
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:46:09+00:00",
            "end_time": "2018-09-08T05:13:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2329.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62586912867866,
              71.33254565183736,
              0.914564104674994
            ],
            [
              -156.62637994213804,
              71.33689302258244,
              0.914564104674994
            ],
            [
              -156.61285117134898,
              71.33707278931172,
              217.454564104675
            ],
            [
              -156.6123429837003,
              71.33272537830406,
              217.454564104675
            ],
            [
              -156.62586912867866,
              71.33254565183736,
              0.914564104674994
            ]
          ]
        ]
      },
      "bbox": [
        -156.6263799,
        71.33254565,
        0.9145641047,
        -156.612343,
        71.33707279,
        217.4545641
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:28Z",
        "pc:count": 1654480,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95946.10592,
            "count": 1654480,
            "maximum": -95702.0593,
            "minimum": -96198.0993,
            "name": "X",
            "position": 0,
            "stddev": 135.2886879,
            "variance": 18303.02907
          },
          {
            "average": 2372586.989,
            "count": 1654480,
            "maximum": 2372819.398,
            "minimum": 2372345.958,
            "name": "Y",
            "position": 1,
            "stddev": 130.1453128,
            "variance": 16937.80244
          },
          {
            "average": 1.127322965,
            "count": 1654480,
            "maximum": 217.4545641,
            "minimum": 0.9145641047,
            "name": "Z",
            "position": 2,
            "stddev": 0.2567216006,
            "variance": 0.06590598021
          },
          {
            "average": 15922.70614,
            "count": 1654480,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11820.43408,
            "variance": 139722661.8
          },
          {
            "average": 1.000002418,
            "count": 1654480,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001554887031,
            "variance": 2.417673678e-06
          },
          {
            "average": 1.000004835,
            "count": 1654480,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002198939669,
            "variance": 4.835335666e-06
          },
          {
            "average": 0.5032499637,
            "count": 1654480,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999895887,
            "variance": 0.2499895888
          },
          {
            "average": 0.0006787631159,
            "count": 1654480,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02604424709,
            "variance": 0.0006783028065
          },
          {
            "average": 8.300481118,
            "count": 1654480,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.747818736,
            "variance": 3.054870335
          },
          {
            "average": -0.6799813147,
            "count": 1654480,
            "maximum": 16.27799988,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.224939165,
            "variance": 52.19974594
          },
          {
            "average": 0.4863256129,
            "count": 1654480,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998131272,
            "variance": 0.2498131621
          },
          {
            "average": 406.8674967,
            "count": 1654480,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7141376862,
            "variance": 0.5099926348
          },
          {
            "average": 220415527.2,
            "count": 1654480,
            "maximum": 220416708.6,
            "minimum": 220414425.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 398.9927953,
            "variance": 159195.2507
          },
          {
            "average": 0.4863256129,
            "count": 1654480,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998131272,
            "variance": 0.2498131621
          },
          {
            "average": 0,
            "count": 1654480,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1654480,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1654480,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04322989701,
            "count": 1654480,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2033742806,
            "variance": 0.04136109801
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96198.0993,
          2372345.958,
          0.9145641047,
          -95702.0593,
          2372819.398,
          217.4545641
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96198.0993026017,
                2372345.9579026815,
                0.914564104674994
              ],
              [
                -96198.0993026017,
                2372819.397902682,
                0.914564104674994
              ],
              [
                -95702.05930260169,
                2372819.397902682,
                217.454564104675
              ],
              [
                -95702.05930260169,
                2372345.9579026815,
                217.454564104675
              ],
              [
                -96198.0993026017,
                2372345.9579026815,
                0.914564104674994
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:28+00:00",
        "end_time": "2018-09-08T04:00:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2329.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2329.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2329.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2329.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6263799,
            71.33254565,
            0.9145641047,
            -156.612343,
            71.33707279,
            217.4545641
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62586912867866,
                  71.33254565183736,
                  0.914564104674994
                ],
                [
                  -156.62637994213804,
                  71.33689302258244,
                  0.914564104674994
                ],
                [
                  -156.61285117134898,
                  71.33707278931172,
                  217.454564104675
                ],
                [
                  -156.6123429837003,
                  71.33272537830406,
                  217.454564104675
                ],
                [
                  -156.62586912867866,
                  71.33254565183736,
                  0.914564104674994
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2329.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2329.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:28Z",
            "pc:count": 1654480,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95946.10592,
                "count": 1654480,
                "maximum": -95702.0593,
                "minimum": -96198.0993,
                "name": "X",
                "position": 0,
                "stddev": 135.2886879,
                "variance": 18303.02907
              },
              {
                "average": 2372586.989,
                "count": 1654480,
                "maximum": 2372819.398,
                "minimum": 2372345.958,
                "name": "Y",
                "position": 1,
                "stddev": 130.1453128,
                "variance": 16937.80244
              },
              {
                "average": 1.127322965,
                "count": 1654480,
                "maximum": 217.4545641,
                "minimum": 0.9145641047,
                "name": "Z",
                "position": 2,
                "stddev": 0.2567216006,
                "variance": 0.06590598021
              },
              {
                "average": 15922.70614,
                "count": 1654480,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11820.43408,
                "variance": 139722661.8
              },
              {
                "average": 1.000002418,
                "count": 1654480,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001554887031,
                "variance": 2.417673678e-06
              },
              {
                "average": 1.000004835,
                "count": 1654480,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002198939669,
                "variance": 4.835335666e-06
              },
              {
                "average": 0.5032499637,
                "count": 1654480,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999895887,
                "variance": 0.2499895888
              },
              {
                "average": 0.0006787631159,
                "count": 1654480,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02604424709,
                "variance": 0.0006783028065
              },
              {
                "average": 8.300481118,
                "count": 1654480,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.747818736,
                "variance": 3.054870335
              },
              {
                "average": -0.6799813147,
                "count": 1654480,
                "maximum": 16.27799988,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.224939165,
                "variance": 52.19974594
              },
              {
                "average": 0.4863256129,
                "count": 1654480,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998131272,
                "variance": 0.2498131621
              },
              {
                "average": 406.8674967,
                "count": 1654480,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7141376862,
                "variance": 0.5099926348
              },
              {
                "average": 220415527.2,
                "count": 1654480,
                "maximum": 220416708.6,
                "minimum": 220414425.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 398.9927953,
                "variance": 159195.2507
              },
              {
                "average": 0.4863256129,
                "count": 1654480,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998131272,
                "variance": 0.2498131621
              },
              {
                "average": 0,
                "count": 1654480,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1654480,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1654480,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04322989701,
                "count": 1654480,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2033742806,
                "variance": 0.04136109801
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96198.0993,
              2372345.958,
              0.9145641047,
              -95702.0593,
              2372819.398,
              217.4545641
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96198.0993026017,
                    2372345.9579026815,
                    0.914564104674994
                  ],
                  [
                    -96198.0993026017,
                    2372819.397902682,
                    0.914564104674994
                  ],
                  [
                    -95702.05930260169,
                    2372819.397902682,
                    217.454564104675
                  ],
                  [
                    -95702.05930260169,
                    2372345.9579026815,
                    217.454564104675
                  ],
                  [
                    -96198.0993026017,
                    2372345.9579026815,
                    0.914564104674994
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:28+00:00",
            "end_time": "2018-09-08T04:00:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2213.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.76839810772702,
              71.304838456683,
              0.895033418369626
            ],
            [
              -156.76893035206706,
              71.30913928104263,
              0.895033418369626
            ],
            [
              -156.75542824331137,
              71.30932866751024,
              2.315033418369626
            ],
            [
              -156.75489858837653,
              71.30502780125474,
              2.315033418369626
            ],
            [
              -156.76839810772702,
              71.304838456683,
              0.895033418369626
            ]
          ]
        ]
      },
      "bbox": [
        -156.7689304,
        71.30483846,
        0.8950334184,
        -156.7548986,
        71.30932867,
        2.315033418
      ],
      "properties": {
        "datetime": "2018-09-08T04:09:51Z",
        "pc:count": 1663505,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -101297.3976,
            "count": 1663505,
            "maximum": -101046.6092,
            "minimum": -101542.3292,
            "name": "X",
            "position": 0,
            "stddev": 134.4977481,
            "variance": 18089.64425
          },
          {
            "average": 2369772.594,
            "count": 1663505,
            "maximum": 2370013.779,
            "minimum": 2369545.279,
            "name": "Y",
            "position": 1,
            "stddev": 128.1440227,
            "variance": 16420.89056
          },
          {
            "average": 1.15408227,
            "count": 1663505,
            "maximum": 2.315033418,
            "minimum": 0.8950334184,
            "name": "Z",
            "position": 2,
            "stddev": 0.06764685147,
            "variance": 0.004576096514
          },
          {
            "average": 14277.98057,
            "count": 1663505,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10373.03861,
            "variance": 107599930
          },
          {
            "average": 1,
            "count": 1663505,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1663505,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4960712472,
            "count": 1663505,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999847149,
            "variance": 0.2499847152
          },
          {
            "average": 0.0006672658032,
            "count": 1663505,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02582287669,
            "variance": 0.0006668209604
          },
          {
            "average": 7.745166381,
            "count": 1663505,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.39856255,
            "variance": 5.753102305
          },
          {
            "average": 2.045835899,
            "count": 1663505,
            "maximum": 16.29599953,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.403784389,
            "variance": 54.81602327
          },
          {
            "average": 0.4880736758,
            "count": 1663505,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998578928,
            "variance": 0.249857913
          },
          {
            "average": 403.7594717,
            "count": 1663505,
            "maximum": 406,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7266831199,
            "variance": 0.5280683568
          },
          {
            "average": 220413784.2,
            "count": 1663505,
            "maximum": 220414991.3,
            "minimum": 220412765.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 392.5808511,
            "variance": 154119.7247
          },
          {
            "average": 0.4880736758,
            "count": 1663505,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998578928,
            "variance": 0.249857913
          },
          {
            "average": 0,
            "count": 1663505,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1663505,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1663505,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05165539028,
            "count": 1663505,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2213303874,
            "variance": 0.04898714038
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -101542.3292,
          2369545.279,
          0.8950334184,
          -101046.6092,
          2370013.779,
          2.315033418
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -101542.32918922023,
                2369545.2791497055,
                0.895033418369626
              ],
              [
                -101542.32918922023,
                2370013.7791497055,
                0.895033418369626
              ],
              [
                -101046.60918922022,
                2370013.7791497055,
                2.315033418369626
              ],
              [
                -101046.60918922022,
                2369545.2791497055,
                2.315033418369626
              ],
              [
                -101542.32918922023,
                2369545.2791497055,
                0.895033418369626
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:09:51+00:00",
        "end_time": "2018-09-08T03:32:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2213.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2213.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2213.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2213.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7689304,
            71.30483846,
            0.8950334184,
            -156.7548986,
            71.30932867,
            2.315033418
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.76839810772702,
                  71.304838456683,
                  0.895033418369626
                ],
                [
                  -156.76893035206706,
                  71.30913928104263,
                  0.895033418369626
                ],
                [
                  -156.75542824331137,
                  71.30932866751024,
                  2.315033418369626
                ],
                [
                  -156.75489858837653,
                  71.30502780125474,
                  2.315033418369626
                ],
                [
                  -156.76839810772702,
                  71.304838456683,
                  0.895033418369626
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2213.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2213.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:09:51Z",
            "pc:count": 1663505,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -101297.3976,
                "count": 1663505,
                "maximum": -101046.6092,
                "minimum": -101542.3292,
                "name": "X",
                "position": 0,
                "stddev": 134.4977481,
                "variance": 18089.64425
              },
              {
                "average": 2369772.594,
                "count": 1663505,
                "maximum": 2370013.779,
                "minimum": 2369545.279,
                "name": "Y",
                "position": 1,
                "stddev": 128.1440227,
                "variance": 16420.89056
              },
              {
                "average": 1.15408227,
                "count": 1663505,
                "maximum": 2.315033418,
                "minimum": 0.8950334184,
                "name": "Z",
                "position": 2,
                "stddev": 0.06764685147,
                "variance": 0.004576096514
              },
              {
                "average": 14277.98057,
                "count": 1663505,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10373.03861,
                "variance": 107599930
              },
              {
                "average": 1,
                "count": 1663505,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1663505,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4960712472,
                "count": 1663505,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999847149,
                "variance": 0.2499847152
              },
              {
                "average": 0.0006672658032,
                "count": 1663505,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02582287669,
                "variance": 0.0006668209604
              },
              {
                "average": 7.745166381,
                "count": 1663505,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.39856255,
                "variance": 5.753102305
              },
              {
                "average": 2.045835899,
                "count": 1663505,
                "maximum": 16.29599953,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.403784389,
                "variance": 54.81602327
              },
              {
                "average": 0.4880736758,
                "count": 1663505,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998578928,
                "variance": 0.249857913
              },
              {
                "average": 403.7594717,
                "count": 1663505,
                "maximum": 406,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7266831199,
                "variance": 0.5280683568
              },
              {
                "average": 220413784.2,
                "count": 1663505,
                "maximum": 220414991.3,
                "minimum": 220412765.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 392.5808511,
                "variance": 154119.7247
              },
              {
                "average": 0.4880736758,
                "count": 1663505,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998578928,
                "variance": 0.249857913
              },
              {
                "average": 0,
                "count": 1663505,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1663505,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1663505,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05165539028,
                "count": 1663505,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2213303874,
                "variance": 0.04898714038
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -101542.3292,
              2369545.279,
              0.8950334184,
              -101046.6092,
              2370013.779,
              2.315033418
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -101542.32918922023,
                    2369545.2791497055,
                    0.895033418369626
                  ],
                  [
                    -101542.32918922023,
                    2370013.7791497055,
                    0.895033418369626
                  ],
                  [
                    -101046.60918922022,
                    2370013.7791497055,
                    2.315033418369626
                  ],
                  [
                    -101046.60918922022,
                    2369545.2791497055,
                    2.315033418369626
                  ],
                  [
                    -101542.32918922023,
                    2369545.2791497055,
                    0.895033418369626
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:09:51+00:00",
            "end_time": "2018-09-08T03:32:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2399.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.40563416671208,
              71.35951653560548,
              0.904078901239839
            ],
            [
              -156.4061028609375,
              71.36386653897222,
              0.904078901239839
            ],
            [
              -156.39300175835842,
              71.36402582260615,
              1.424078901239839
            ],
            [
              -156.39253561171788,
              71.35967578348708,
              1.424078901239839
            ],
            [
              -156.40563416671208,
              71.35951653560548,
              0.904078901239839
            ]
          ]
        ]
      },
      "bbox": [
        -156.4061029,
        71.35951654,
        0.9040789012,
        -156.3925356,
        71.36402582,
        1.424078901
      ],
      "properties": {
        "datetime": "2018-09-08T05:49:07Z",
        "pc:count": 1078864,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87753.82985,
            "count": 1078864,
            "maximum": -87547.53326,
            "minimum": -88027.25326,
            "name": "X",
            "position": 0,
            "stddev": 127.7993186,
            "variance": 16332.66584
          },
          {
            "average": 2375248.507,
            "count": 1078864,
            "maximum": 2375446.646,
            "minimum": 2374973.066,
            "name": "Y",
            "position": 1,
            "stddev": 116.6432593,
            "variance": 13605.64994
          },
          {
            "average": 1.14481499,
            "count": 1078864,
            "maximum": 1.424078901,
            "minimum": 0.9040789012,
            "name": "Z",
            "position": 2,
            "stddev": 0.05018731838,
            "variance": 0.002518766926
          },
          {
            "average": 17261.64264,
            "count": 1078864,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13395.19278,
            "variance": 179431189.5
          },
          {
            "average": 1,
            "count": 1078864,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1078864,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4966631568,
            "count": 1078864,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999890971,
            "variance": 0.2499890972
          },
          {
            "average": 0.0008740675377,
            "count": 1078864,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02955172335,
            "variance": 0.0008733043531
          },
          {
            "average": 8.053825135,
            "count": 1078864,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.978910794,
            "variance": 3.916087932
          },
          {
            "average": 1.46259222,
            "count": 1078864,
            "maximum": 16.79400063,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.140313319,
            "variance": 50.9840743
          },
          {
            "average": 0.4822665322,
            "count": 1078864,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996856567,
            "variance": 0.2496857556
          },
          {
            "average": 415.2068314,
            "count": 1078864,
            "maximum": 417,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7221976718,
            "variance": 0.5215694772
          },
          {
            "average": 220420151,
            "count": 1078864,
            "maximum": 220420947.5,
            "minimum": 220418788.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 470.638,
            "variance": 221500.127
          },
          {
            "average": 0.4822665322,
            "count": 1078864,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996856567,
            "variance": 0.2496857556
          },
          {
            "average": 0,
            "count": 1078864,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1078864,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1078864,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04315650536,
            "count": 1078864,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2032093986,
            "variance": 0.04129405968
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88027.25326,
          2374973.066,
          0.9040789012,
          -87547.53326,
          2375446.646,
          1.424078901
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88027.25326298874,
                2374973.065687869,
                0.904078901239839
              ],
              [
                -88027.25326298874,
                2375446.6456878693,
                0.904078901239839
              ],
              [
                -87547.53326298874,
                2375446.6456878693,
                1.424078901239839
              ],
              [
                -87547.53326298874,
                2374973.065687869,
                1.424078901239839
              ],
              [
                -88027.25326298874,
                2374973.065687869,
                0.904078901239839
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:49:07+00:00",
        "end_time": "2018-09-08T05:13:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2399.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2399.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2399.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2399.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4061029,
            71.35951654,
            0.9040789012,
            -156.3925356,
            71.36402582,
            1.424078901
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.40563416671208,
                  71.35951653560548,
                  0.904078901239839
                ],
                [
                  -156.4061028609375,
                  71.36386653897222,
                  0.904078901239839
                ],
                [
                  -156.39300175835842,
                  71.36402582260615,
                  1.424078901239839
                ],
                [
                  -156.39253561171788,
                  71.35967578348708,
                  1.424078901239839
                ],
                [
                  -156.40563416671208,
                  71.35951653560548,
                  0.904078901239839
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2399.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2399.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:49:07Z",
            "pc:count": 1078864,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87753.82985,
                "count": 1078864,
                "maximum": -87547.53326,
                "minimum": -88027.25326,
                "name": "X",
                "position": 0,
                "stddev": 127.7993186,
                "variance": 16332.66584
              },
              {
                "average": 2375248.507,
                "count": 1078864,
                "maximum": 2375446.646,
                "minimum": 2374973.066,
                "name": "Y",
                "position": 1,
                "stddev": 116.6432593,
                "variance": 13605.64994
              },
              {
                "average": 1.14481499,
                "count": 1078864,
                "maximum": 1.424078901,
                "minimum": 0.9040789012,
                "name": "Z",
                "position": 2,
                "stddev": 0.05018731838,
                "variance": 0.002518766926
              },
              {
                "average": 17261.64264,
                "count": 1078864,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13395.19278,
                "variance": 179431189.5
              },
              {
                "average": 1,
                "count": 1078864,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1078864,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4966631568,
                "count": 1078864,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999890971,
                "variance": 0.2499890972
              },
              {
                "average": 0.0008740675377,
                "count": 1078864,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02955172335,
                "variance": 0.0008733043531
              },
              {
                "average": 8.053825135,
                "count": 1078864,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.978910794,
                "variance": 3.916087932
              },
              {
                "average": 1.46259222,
                "count": 1078864,
                "maximum": 16.79400063,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.140313319,
                "variance": 50.9840743
              },
              {
                "average": 0.4822665322,
                "count": 1078864,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996856567,
                "variance": 0.2496857556
              },
              {
                "average": 415.2068314,
                "count": 1078864,
                "maximum": 417,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7221976718,
                "variance": 0.5215694772
              },
              {
                "average": 220420151,
                "count": 1078864,
                "maximum": 220420947.5,
                "minimum": 220418788.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 470.638,
                "variance": 221500.127
              },
              {
                "average": 0.4822665322,
                "count": 1078864,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996856567,
                "variance": 0.2496857556
              },
              {
                "average": 0,
                "count": 1078864,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1078864,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1078864,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04315650536,
                "count": 1078864,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2032093986,
                "variance": 0.04129405968
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88027.25326,
              2374973.066,
              0.9040789012,
              -87547.53326,
              2375446.646,
              1.424078901
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88027.25326298874,
                    2374973.065687869,
                    0.904078901239839
                  ],
                  [
                    -88027.25326298874,
                    2375446.6456878693,
                    0.904078901239839
                  ],
                  [
                    -87547.53326298874,
                    2375446.6456878693,
                    1.424078901239839
                  ],
                  [
                    -87547.53326298874,
                    2374973.065687869,
                    1.424078901239839
                  ],
                  [
                    -88027.25326298874,
                    2374973.065687869,
                    0.904078901239839
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:49:07+00:00",
            "end_time": "2018-09-08T05:13:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2302.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.65202208140687,
              71.32453625877986,
              -11.020143044936598
            ],
            [
              -156.65253794752815,
              71.32888461016918,
              -11.020143044936598
            ],
            [
              -156.63901368609248,
              71.3290661685876,
              18.039856955063406
            ],
            [
              -156.63850044461967,
              71.32471777654408,
              18.039856955063406
            ],
            [
              -156.65202208140687,
              71.32453625877986,
              -11.020143044936598
            ]
          ]
        ]
      },
      "bbox": [
        -156.6525379,
        71.32453626,
        -11.02014304,
        -156.6385004,
        71.32906617,
        18.03985696
      ],
      "properties": {
        "datetime": "2018-09-08T04:38:51Z",
        "pc:count": 2244479,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96906.18599,
            "count": 2244479,
            "maximum": -96694.43644,
            "minimum": -97190.49644,
            "name": "X",
            "position": 0,
            "stddev": 128.7856889,
            "variance": 16585.75367
          },
          {
            "average": 2371748.417,
            "count": 2244479,
            "maximum": 2371986.706,
            "minimum": 2371513.126,
            "name": "Y",
            "position": 1,
            "stddev": 129.7708394,
            "variance": 16840.47075
          },
          {
            "average": 2.751155934,
            "count": 2244479,
            "maximum": 18.03985696,
            "minimum": -11.02014304,
            "name": "Z",
            "position": 2,
            "stddev": 1.08615557,
            "variance": 1.179733922
          },
          {
            "average": 33457.4443,
            "count": 2244479,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16407.84635,
            "variance": 269217421.9
          },
          {
            "average": 1.004352458,
            "count": 2244479,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06658315307,
            "variance": 0.004433316272
          },
          {
            "average": 1.008713381,
            "count": 2244479,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09454440841,
            "variance": 0.008938645161
          },
          {
            "average": 0.5021089527,
            "count": 2244479,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999956637,
            "variance": 0.2499956637
          },
          {
            "average": 0.000499447756,
            "count": 2244479,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02234275118,
            "variance": 0.0004991985304
          },
          {
            "average": 3.408639154,
            "count": 2244479,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.361140615,
            "variance": 11.29726623
          },
          {
            "average": -1.078693402,
            "count": 2244479,
            "maximum": 16.34399986,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.208780899,
            "variance": 84.80164564
          },
          {
            "average": 0.4771851285,
            "count": 2244479,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994793217,
            "variance": 0.2494795928
          },
          {
            "average": 406.9697547,
            "count": 2244479,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8177471532,
            "variance": 0.6687104066
          },
          {
            "average": 220415592.5,
            "count": 2244479,
            "maximum": 220416731.5,
            "minimum": 220414448.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 458.7833518,
            "variance": 210482.1639
          },
          {
            "average": 0.4771851285,
            "count": 2244479,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994793217,
            "variance": 0.2494795928
          },
          {
            "average": 0,
            "count": 2244479,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2244479,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2244479,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1566702117,
            "count": 2244479,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3634896358,
            "variance": 0.1321247153
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97190.49644,
          2371513.126,
          -11.02014304,
          -96694.43644,
          2371986.706,
          18.03985696
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97190.49643619763,
                2371513.1260197004,
                -11.020143044936598
              ],
              [
                -97190.49643619763,
                2371986.7060197005,
                -11.020143044936598
              ],
              [
                -96694.43643619763,
                2371986.7060197005,
                18.039856955063406
              ],
              [
                -96694.43643619763,
                2371513.1260197004,
                18.039856955063406
              ],
              [
                -97190.49643619763,
                2371513.1260197004,
                -11.020143044936598
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:38:51+00:00",
        "end_time": "2018-09-08T04:00:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2302.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2302.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2302.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2302.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6525379,
            71.32453626,
            -11.02014304,
            -156.6385004,
            71.32906617,
            18.03985696
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.65202208140687,
                  71.32453625877986,
                  -11.020143044936598
                ],
                [
                  -156.65253794752815,
                  71.32888461016918,
                  -11.020143044936598
                ],
                [
                  -156.63901368609248,
                  71.3290661685876,
                  18.039856955063406
                ],
                [
                  -156.63850044461967,
                  71.32471777654408,
                  18.039856955063406
                ],
                [
                  -156.65202208140687,
                  71.32453625877986,
                  -11.020143044936598
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2302.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2302.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:38:51Z",
            "pc:count": 2244479,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96906.18599,
                "count": 2244479,
                "maximum": -96694.43644,
                "minimum": -97190.49644,
                "name": "X",
                "position": 0,
                "stddev": 128.7856889,
                "variance": 16585.75367
              },
              {
                "average": 2371748.417,
                "count": 2244479,
                "maximum": 2371986.706,
                "minimum": 2371513.126,
                "name": "Y",
                "position": 1,
                "stddev": 129.7708394,
                "variance": 16840.47075
              },
              {
                "average": 2.751155934,
                "count": 2244479,
                "maximum": 18.03985696,
                "minimum": -11.02014304,
                "name": "Z",
                "position": 2,
                "stddev": 1.08615557,
                "variance": 1.179733922
              },
              {
                "average": 33457.4443,
                "count": 2244479,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16407.84635,
                "variance": 269217421.9
              },
              {
                "average": 1.004352458,
                "count": 2244479,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06658315307,
                "variance": 0.004433316272
              },
              {
                "average": 1.008713381,
                "count": 2244479,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09454440841,
                "variance": 0.008938645161
              },
              {
                "average": 0.5021089527,
                "count": 2244479,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999956637,
                "variance": 0.2499956637
              },
              {
                "average": 0.000499447756,
                "count": 2244479,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02234275118,
                "variance": 0.0004991985304
              },
              {
                "average": 3.408639154,
                "count": 2244479,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.361140615,
                "variance": 11.29726623
              },
              {
                "average": -1.078693402,
                "count": 2244479,
                "maximum": 16.34399986,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.208780899,
                "variance": 84.80164564
              },
              {
                "average": 0.4771851285,
                "count": 2244479,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994793217,
                "variance": 0.2494795928
              },
              {
                "average": 406.9697547,
                "count": 2244479,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8177471532,
                "variance": 0.6687104066
              },
              {
                "average": 220415592.5,
                "count": 2244479,
                "maximum": 220416731.5,
                "minimum": 220414448.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 458.7833518,
                "variance": 210482.1639
              },
              {
                "average": 0.4771851285,
                "count": 2244479,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994793217,
                "variance": 0.2494795928
              },
              {
                "average": 0,
                "count": 2244479,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2244479,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2244479,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1566702117,
                "count": 2244479,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3634896358,
                "variance": 0.1321247153
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97190.49644,
              2371513.126,
              -11.02014304,
              -96694.43644,
              2371986.706,
              18.03985696
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97190.49643619763,
                    2371513.1260197004,
                    -11.020143044936598
                  ],
                  [
                    -97190.49643619763,
                    2371986.7060197005,
                    -11.020143044936598
                  ],
                  [
                    -96694.43643619763,
                    2371986.7060197005,
                    18.039856955063406
                  ],
                  [
                    -96694.43643619763,
                    2371513.1260197004,
                    18.039856955063406
                  ],
                  [
                    -97190.49643619763,
                    2371513.1260197004,
                    -11.020143044936598
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:38:51+00:00",
            "end_time": "2018-09-08T04:00:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2234.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74258752905658,
              71.30876659327639,
              -5.494639861438278
            ],
            [
              -156.74312064856082,
              71.31311442207522,
              -5.494639861438278
            ],
            [
              -156.72961102093433,
              71.31330211285012,
              18.565360138561722
            ],
            [
              -156.72908052106706,
              71.30895424206727,
              18.565360138561722
            ],
            [
              -156.74258752905658,
              71.30876659327639,
              -5.494639861438278
            ]
          ]
        ]
      },
      "bbox": [
        -156.7431206,
        71.30876659,
        -5.494639861,
        -156.7290805,
        71.31330211,
        18.56536014
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:12Z",
        "pc:count": 2206406,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100330.89,
            "count": 2206406,
            "maximum": -100082.6106,
            "minimum": -100578.5106,
            "name": "X",
            "position": 0,
            "stddev": 134.0738893,
            "variance": 17975.80779
          },
          {
            "average": 2370162.038,
            "count": 2206406,
            "maximum": 2370406.765,
            "minimum": 2369933.165,
            "name": "Y",
            "position": 1,
            "stddev": 125.3433085,
            "variance": 15710.94498
          },
          {
            "average": 2.150460718,
            "count": 2206406,
            "maximum": 18.56536014,
            "minimum": -5.494639861,
            "name": "Z",
            "position": 2,
            "stddev": 1.175954539,
            "variance": 1.382869079
          },
          {
            "average": 20523.971,
            "count": 2206406,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11125.37929,
            "variance": 123774064.3
          },
          {
            "average": 1.003950769,
            "count": 2206406,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06336347357,
            "variance": 0.004014929783
          },
          {
            "average": 1.007895192,
            "count": 2206406,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08984522937,
            "variance": 0.00807216524
          },
          {
            "average": 0.5058293895,
            "count": 2206406,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999661304,
            "variance": 0.2499661315
          },
          {
            "average": 0.0005135047675,
            "count": 2206406,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02265482979,
            "variance": 0.0005132413129
          },
          {
            "average": 5.044369894,
            "count": 2206406,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.760562329,
            "variance": 14.14182903
          },
          {
            "average": -0.4769562207,
            "count": 2206406,
            "maximum": 16.37999916,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.970360938,
            "variance": 80.46737535
          },
          {
            "average": 0.526812835,
            "count": 2206406,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992806674,
            "variance": 0.2492811849
          },
          {
            "average": 404.7312666,
            "count": 2206406,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8148810394,
            "variance": 0.6640311084
          },
          {
            "average": 220414322.1,
            "count": 2206406,
            "maximum": 220415012.7,
            "minimum": 220413400,
            "name": "GpsTime",
            "position": 12,
            "stddev": 462.8683627,
            "variance": 214247.1212
          },
          {
            "average": 0.526812835,
            "count": 2206406,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992806674,
            "variance": 0.2492811849
          },
          {
            "average": 0,
            "count": 2206406,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2206406,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2206406,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.176165674,
            "count": 2206406,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3809611464,
            "variance": 0.145131395
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100578.5106,
          2369933.165,
          -5.494639861,
          -100082.6106,
          2370406.765,
          18.56536014
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100578.51059162388,
                2369933.1650782186,
                -5.494639861438278
              ],
              [
                -100578.51059162388,
                2370406.765078218,
                -5.494639861438278
              ],
              [
                -100082.61059162389,
                2370406.765078218,
                18.565360138561722
              ],
              [
                -100082.61059162389,
                2369933.1650782186,
                18.565360138561722
              ],
              [
                -100578.51059162388,
                2369933.1650782186,
                -5.494639861438278
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:12+00:00",
        "end_time": "2018-09-08T03:43:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2234.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2234.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2234.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2234.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7431206,
            71.30876659,
            -5.494639861,
            -156.7290805,
            71.31330211,
            18.56536014
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74258752905658,
                  71.30876659327639,
                  -5.494639861438278
                ],
                [
                  -156.74312064856082,
                  71.31311442207522,
                  -5.494639861438278
                ],
                [
                  -156.72961102093433,
                  71.31330211285012,
                  18.565360138561722
                ],
                [
                  -156.72908052106706,
                  71.30895424206727,
                  18.565360138561722
                ],
                [
                  -156.74258752905658,
                  71.30876659327639,
                  -5.494639861438278
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2234.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2234.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:12Z",
            "pc:count": 2206406,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100330.89,
                "count": 2206406,
                "maximum": -100082.6106,
                "minimum": -100578.5106,
                "name": "X",
                "position": 0,
                "stddev": 134.0738893,
                "variance": 17975.80779
              },
              {
                "average": 2370162.038,
                "count": 2206406,
                "maximum": 2370406.765,
                "minimum": 2369933.165,
                "name": "Y",
                "position": 1,
                "stddev": 125.3433085,
                "variance": 15710.94498
              },
              {
                "average": 2.150460718,
                "count": 2206406,
                "maximum": 18.56536014,
                "minimum": -5.494639861,
                "name": "Z",
                "position": 2,
                "stddev": 1.175954539,
                "variance": 1.382869079
              },
              {
                "average": 20523.971,
                "count": 2206406,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11125.37929,
                "variance": 123774064.3
              },
              {
                "average": 1.003950769,
                "count": 2206406,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06336347357,
                "variance": 0.004014929783
              },
              {
                "average": 1.007895192,
                "count": 2206406,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08984522937,
                "variance": 0.00807216524
              },
              {
                "average": 0.5058293895,
                "count": 2206406,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999661304,
                "variance": 0.2499661315
              },
              {
                "average": 0.0005135047675,
                "count": 2206406,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02265482979,
                "variance": 0.0005132413129
              },
              {
                "average": 5.044369894,
                "count": 2206406,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.760562329,
                "variance": 14.14182903
              },
              {
                "average": -0.4769562207,
                "count": 2206406,
                "maximum": 16.37999916,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.970360938,
                "variance": 80.46737535
              },
              {
                "average": 0.526812835,
                "count": 2206406,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992806674,
                "variance": 0.2492811849
              },
              {
                "average": 404.7312666,
                "count": 2206406,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8148810394,
                "variance": 0.6640311084
              },
              {
                "average": 220414322.1,
                "count": 2206406,
                "maximum": 220415012.7,
                "minimum": 220413400,
                "name": "GpsTime",
                "position": 12,
                "stddev": 462.8683627,
                "variance": 214247.1212
              },
              {
                "average": 0.526812835,
                "count": 2206406,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992806674,
                "variance": 0.2492811849
              },
              {
                "average": 0,
                "count": 2206406,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2206406,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2206406,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.176165674,
                "count": 2206406,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3809611464,
                "variance": 0.145131395
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100578.5106,
              2369933.165,
              -5.494639861,
              -100082.6106,
              2370406.765,
              18.56536014
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100578.51059162388,
                    2369933.1650782186,
                    -5.494639861438278
                  ],
                  [
                    -100578.51059162388,
                    2370406.765078218,
                    -5.494639861438278
                  ],
                  [
                    -100082.61059162389,
                    2370406.765078218,
                    18.565360138561722
                  ],
                  [
                    -100082.61059162389,
                    2369933.1650782186,
                    18.565360138561722
                  ],
                  [
                    -100578.51059162388,
                    2369933.1650782186,
                    -5.494639861438278
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:12+00:00",
            "end_time": "2018-09-08T03:43:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2254.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70398785976334,
              71.31260462125455,
              1.39975664020864
            ],
            [
              -156.7045133483346,
              71.31695083065689,
              1.39975664020864
            ],
            [
              -156.69100326359225,
              71.31713584971881,
              22.43975664020864
            ],
            [
              -156.69048039427662,
              71.31278959893629,
              22.43975664020864
            ],
            [
              -156.70398785976334,
              71.31260462125455,
              1.39975664020864
            ]
          ]
        ]
      },
      "bbox": [
        -156.7045133,
        71.31260462,
        1.39975664,
        -156.6904804,
        71.31713585,
        22.43975664
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:16Z",
        "pc:count": 1475082,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98896.49445,
            "count": 1475082,
            "maximum": -98650.91562,
            "minimum": -99146.73562,
            "name": "X",
            "position": 0,
            "stddev": 136.1774753,
            "variance": 18544.30477
          },
          {
            "average": 2370535.613,
            "count": 1475082,
            "maximum": 2370765.884,
            "minimum": 2370292.484,
            "name": "Y",
            "position": 1,
            "stddev": 127.9247362,
            "variance": 16364.73813
          },
          {
            "average": 1.581075252,
            "count": 1475082,
            "maximum": 22.43975664,
            "minimum": 1.39975664,
            "name": "Z",
            "position": 2,
            "stddev": 0.05244445803,
            "variance": 0.002750421178
          },
          {
            "average": 19463.26175,
            "count": 1475082,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14631.2942,
            "variance": 214074769.8
          },
          {
            "average": 1.000001356,
            "count": 1475082,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001164412259,
            "variance": 1.355855908e-06
          },
          {
            "average": 1.000002712,
            "count": 1475082,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001646726492,
            "variance": 2.711708139e-06
          },
          {
            "average": 0.5026764614,
            "count": 1475082,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499993006,
            "variance": 0.249993006
          },
          {
            "average": 0.0007341964718,
            "count": 1475082,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02708612052,
            "variance": 0.0007336579247
          },
          {
            "average": 8.326974365,
            "count": 1475082,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.684316468,
            "variance": 2.836921963
          },
          {
            "average": -0.5693596546,
            "count": 1475082,
            "maximum": 16.33799934,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.724262314,
            "variance": 45.21570366
          },
          {
            "average": 0.4872285066,
            "count": 1475082,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998370318,
            "variance": 0.2498370583
          },
          {
            "average": 406.0824097,
            "count": 1475082,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6517141916,
            "variance": 0.4247313875
          },
          {
            "average": 220415086.3,
            "count": 1475082,
            "maximum": 220416156.6,
            "minimum": 220413897.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 369.5395148,
            "variance": 136559.453
          },
          {
            "average": 0.4872285066,
            "count": 1475082,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998370318,
            "variance": 0.2498370583
          },
          {
            "average": 0,
            "count": 1475082,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1475082,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1475082,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03822160395,
            "count": 1475082,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1917308996,
            "variance": 0.03676073786
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99146.73562,
          2370292.484,
          1.39975664,
          -98650.91562,
          2370765.884,
          22.43975664
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99146.73562195814,
                2370292.484090084,
                1.39975664020864
              ],
              [
                -99146.73562195814,
                2370765.8840900846,
                1.39975664020864
              ],
              [
                -98650.91562195813,
                2370765.8840900846,
                22.43975664020864
              ],
              [
                -98650.91562195813,
                2370292.484090084,
                22.43975664020864
              ],
              [
                -99146.73562195814,
                2370292.484090084,
                1.39975664020864
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:16+00:00",
        "end_time": "2018-09-08T03:51:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2254.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2254.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2254.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2254.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7045133,
            71.31260462,
            1.39975664,
            -156.6904804,
            71.31713585,
            22.43975664
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70398785976334,
                  71.31260462125455,
                  1.39975664020864
                ],
                [
                  -156.7045133483346,
                  71.31695083065689,
                  1.39975664020864
                ],
                [
                  -156.69100326359225,
                  71.31713584971881,
                  22.43975664020864
                ],
                [
                  -156.69048039427662,
                  71.31278959893629,
                  22.43975664020864
                ],
                [
                  -156.70398785976334,
                  71.31260462125455,
                  1.39975664020864
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2254.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2254.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:16Z",
            "pc:count": 1475082,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98896.49445,
                "count": 1475082,
                "maximum": -98650.91562,
                "minimum": -99146.73562,
                "name": "X",
                "position": 0,
                "stddev": 136.1774753,
                "variance": 18544.30477
              },
              {
                "average": 2370535.613,
                "count": 1475082,
                "maximum": 2370765.884,
                "minimum": 2370292.484,
                "name": "Y",
                "position": 1,
                "stddev": 127.9247362,
                "variance": 16364.73813
              },
              {
                "average": 1.581075252,
                "count": 1475082,
                "maximum": 22.43975664,
                "minimum": 1.39975664,
                "name": "Z",
                "position": 2,
                "stddev": 0.05244445803,
                "variance": 0.002750421178
              },
              {
                "average": 19463.26175,
                "count": 1475082,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14631.2942,
                "variance": 214074769.8
              },
              {
                "average": 1.000001356,
                "count": 1475082,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001164412259,
                "variance": 1.355855908e-06
              },
              {
                "average": 1.000002712,
                "count": 1475082,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001646726492,
                "variance": 2.711708139e-06
              },
              {
                "average": 0.5026764614,
                "count": 1475082,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499993006,
                "variance": 0.249993006
              },
              {
                "average": 0.0007341964718,
                "count": 1475082,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02708612052,
                "variance": 0.0007336579247
              },
              {
                "average": 8.326974365,
                "count": 1475082,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.684316468,
                "variance": 2.836921963
              },
              {
                "average": -0.5693596546,
                "count": 1475082,
                "maximum": 16.33799934,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.724262314,
                "variance": 45.21570366
              },
              {
                "average": 0.4872285066,
                "count": 1475082,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998370318,
                "variance": 0.2498370583
              },
              {
                "average": 406.0824097,
                "count": 1475082,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6517141916,
                "variance": 0.4247313875
              },
              {
                "average": 220415086.3,
                "count": 1475082,
                "maximum": 220416156.6,
                "minimum": 220413897.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 369.5395148,
                "variance": 136559.453
              },
              {
                "average": 0.4872285066,
                "count": 1475082,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998370318,
                "variance": 0.2498370583
              },
              {
                "average": 0,
                "count": 1475082,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1475082,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1475082,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03822160395,
                "count": 1475082,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1917308996,
                "variance": 0.03676073786
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99146.73562,
              2370292.484,
              1.39975664,
              -98650.91562,
              2370765.884,
              22.43975664
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99146.73562195814,
                    2370292.484090084,
                    1.39975664020864
                  ],
                  [
                    -99146.73562195814,
                    2370765.8840900846,
                    1.39975664020864
                  ],
                  [
                    -98650.91562195813,
                    2370765.8840900846,
                    22.43975664020864
                  ],
                  [
                    -98650.91562195813,
                    2370292.484090084,
                    22.43975664020864
                  ],
                  [
                    -99146.73562195814,
                    2370292.484090084,
                    1.39975664020864
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:16+00:00",
            "end_time": "2018-09-08T03:51:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2386.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.50888105765222,
              71.35641442248675,
              0.81530313288189
            ],
            [
              -156.50935141743335,
              71.36060059433429,
              0.81530313288189
            ],
            [
              -156.49580409334672,
              71.36077240276228,
              3.515303132881891
            ],
            [
              -156.4953362681182,
              71.35658619381024,
              3.515303132881891
            ],
            [
              -156.50888105765222,
              71.35641442248675,
              0.81530313288189
            ]
          ]
        ]
      },
      "bbox": [
        -156.5093514,
        71.35641442,
        0.8153031329,
        -156.4953363,
        71.3607724,
        3.515303133
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:38Z",
        "pc:count": 1305698,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91607.68396,
            "count": 1305698,
            "maximum": -91320.10284,
            "minimum": -91816.26284,
            "name": "X",
            "position": 0,
            "stddev": 125.7261343,
            "variance": 15807.06084
          },
          {
            "average": 2375034.559,
            "count": 1305698,
            "maximum": 2375231.364,
            "minimum": 2374775.584,
            "name": "Y",
            "position": 1,
            "stddev": 118.9529495,
            "variance": 14149.8042
          },
          {
            "average": 1.115214621,
            "count": 1305698,
            "maximum": 3.515303133,
            "minimum": 0.8153031329,
            "name": "Z",
            "position": 2,
            "stddev": 0.06911497548,
            "variance": 0.004776879836
          },
          {
            "average": 16735.21045,
            "count": 1305698,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12327.54197,
            "variance": 151968291
          },
          {
            "average": 1.000000766,
            "count": 1305698,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008751422085,
            "variance": 7.658738851e-07
          },
          {
            "average": 1.000001532,
            "count": 1305698,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001237637506,
            "variance": 1.531746597e-06
          },
          {
            "average": 0.4994822693,
            "count": 1305698,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999234,
            "variance": 0.2499999234
          },
          {
            "average": 0.0006035086214,
            "count": 1305698,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02455900773,
            "variance": 0.0006031448607
          },
          {
            "average": 7.615448595,
            "count": 1305698,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.538131197,
            "variance": 6.442109971
          },
          {
            "average": 0.55034052,
            "count": 1305698,
            "maximum": 16.29599953,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.511907312,
            "variance": 56.42875146
          },
          {
            "average": 0.4808363036,
            "count": 1305698,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996328091,
            "variance": 0.2496329439
          },
          {
            "average": 409.0222594,
            "count": 1305698,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6523570185,
            "variance": 0.4255696796
          },
          {
            "average": 220416735.5,
            "count": 1305698,
            "maximum": 220417438.6,
            "minimum": 220415473.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 396.1117292,
            "variance": 156904.502
          },
          {
            "average": 0.4808363036,
            "count": 1305698,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996328091,
            "variance": 0.2496329439
          },
          {
            "average": 0,
            "count": 1305698,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1305698,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1305698,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05703462822,
            "count": 1305698,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2319088627,
            "variance": 0.0537817206
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91816.26284,
          2374775.584,
          0.8153031329,
          -91320.10284,
          2375231.364,
          3.515303133
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91816.26284322802,
                2374775.5841688407,
                0.81530313288189
              ],
              [
                -91816.26284322802,
                2375231.364168841,
                0.81530313288189
              ],
              [
                -91320.10284322801,
                2375231.364168841,
                3.515303132881891
              ],
              [
                -91320.10284322801,
                2374775.5841688407,
                3.515303132881891
              ],
              [
                -91816.26284322802,
                2374775.5841688407,
                0.81530313288189
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:38+00:00",
        "end_time": "2018-09-08T04:17:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2386.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2386.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2386.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2386.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5093514,
            71.35641442,
            0.8153031329,
            -156.4953363,
            71.3607724,
            3.515303133
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.50888105765222,
                  71.35641442248675,
                  0.81530313288189
                ],
                [
                  -156.50935141743335,
                  71.36060059433429,
                  0.81530313288189
                ],
                [
                  -156.49580409334672,
                  71.36077240276228,
                  3.515303132881891
                ],
                [
                  -156.4953362681182,
                  71.35658619381024,
                  3.515303132881891
                ],
                [
                  -156.50888105765222,
                  71.35641442248675,
                  0.81530313288189
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2386.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2386.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:38Z",
            "pc:count": 1305698,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91607.68396,
                "count": 1305698,
                "maximum": -91320.10284,
                "minimum": -91816.26284,
                "name": "X",
                "position": 0,
                "stddev": 125.7261343,
                "variance": 15807.06084
              },
              {
                "average": 2375034.559,
                "count": 1305698,
                "maximum": 2375231.364,
                "minimum": 2374775.584,
                "name": "Y",
                "position": 1,
                "stddev": 118.9529495,
                "variance": 14149.8042
              },
              {
                "average": 1.115214621,
                "count": 1305698,
                "maximum": 3.515303133,
                "minimum": 0.8153031329,
                "name": "Z",
                "position": 2,
                "stddev": 0.06911497548,
                "variance": 0.004776879836
              },
              {
                "average": 16735.21045,
                "count": 1305698,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12327.54197,
                "variance": 151968291
              },
              {
                "average": 1.000000766,
                "count": 1305698,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008751422085,
                "variance": 7.658738851e-07
              },
              {
                "average": 1.000001532,
                "count": 1305698,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001237637506,
                "variance": 1.531746597e-06
              },
              {
                "average": 0.4994822693,
                "count": 1305698,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999234,
                "variance": 0.2499999234
              },
              {
                "average": 0.0006035086214,
                "count": 1305698,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02455900773,
                "variance": 0.0006031448607
              },
              {
                "average": 7.615448595,
                "count": 1305698,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.538131197,
                "variance": 6.442109971
              },
              {
                "average": 0.55034052,
                "count": 1305698,
                "maximum": 16.29599953,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.511907312,
                "variance": 56.42875146
              },
              {
                "average": 0.4808363036,
                "count": 1305698,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996328091,
                "variance": 0.2496329439
              },
              {
                "average": 409.0222594,
                "count": 1305698,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6523570185,
                "variance": 0.4255696796
              },
              {
                "average": 220416735.5,
                "count": 1305698,
                "maximum": 220417438.6,
                "minimum": 220415473.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 396.1117292,
                "variance": 156904.502
              },
              {
                "average": 0.4808363036,
                "count": 1305698,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996328091,
                "variance": 0.2496329439
              },
              {
                "average": 0,
                "count": 1305698,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1305698,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1305698,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05703462822,
                "count": 1305698,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2319088627,
                "variance": 0.0537817206
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91816.26284,
              2374775.584,
              0.8153031329,
              -91320.10284,
              2375231.364,
              3.515303133
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91816.26284322802,
                    2374775.5841688407,
                    0.81530313288189
                  ],
                  [
                    -91816.26284322802,
                    2375231.364168841,
                    0.81530313288189
                  ],
                  [
                    -91320.10284322801,
                    2375231.364168841,
                    3.515303132881891
                  ],
                  [
                    -91320.10284322801,
                    2374775.5841688407,
                    3.515303132881891
                  ],
                  [
                    -91816.26284322802,
                    2374775.5841688407,
                    0.81530313288189
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:38+00:00",
            "end_time": "2018-09-08T04:17:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2275.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62703222583647,
              71.31615849614585,
              2.557612355233119
            ],
            [
              -156.62754306376175,
              71.3205068489221,
              2.557612355233119
            ],
            [
              -156.61402693542357,
              71.32068663957793,
              3.657612355233119
            ],
            [
              -156.6135187198147,
              71.31633824656278,
              3.657612355233119
            ],
            [
              -156.62703222583647,
              71.31615849614585,
              2.557612355233119
            ]
          ]
        ]
      },
      "bbox": [
        -156.6275431,
        71.3161585,
        2.557612355,
        -156.6135187,
        71.32068664,
        3.657612355
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:27Z",
        "pc:count": 3100041,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96065.55985,
            "count": 3100041,
            "maximum": -95815.27211,
            "minimum": -96311.21211,
            "name": "X",
            "position": 0,
            "stddev": 133.5670074,
            "variance": 17840.14546
          },
          {
            "average": 2370807.295,
            "count": 3100041,
            "maximum": 2371039.304,
            "minimum": 2370565.704,
            "name": "Y",
            "position": 1,
            "stddev": 127.7581012,
            "variance": 16322.13242
          },
          {
            "average": 2.7598329,
            "count": 3100041,
            "maximum": 3.657612355,
            "minimum": 2.557612355,
            "name": "Z",
            "position": 2,
            "stddev": 0.03258499945,
            "variance": 0.001061782189
          },
          {
            "average": 27967.79347,
            "count": 3100041,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7724.6764,
            "variance": 59670625.49
          },
          {
            "average": 1,
            "count": 3100041,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3100041,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5030194762,
            "count": 3100041,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999909633,
            "variance": 0.2499909634
          },
          {
            "average": 0.0004409619099,
            "count": 3100041,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02099446605,
            "variance": 0.0004407676046
          },
          {
            "average": 1.338619392,
            "count": 3100041,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6695197558,
            "variance": 0.4482567034
          },
          {
            "average": 1.273659433,
            "count": 3100041,
            "maximum": 16.37999916,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.56248273,
            "variance": 111.5660415
          },
          {
            "average": 0.5446611835,
            "count": 3100041,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980014645,
            "variance": 0.2480054587
          },
          {
            "average": 410.4810123,
            "count": 3100041,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9897812405,
            "variance": 0.9796669041
          },
          {
            "average": 220417574.6,
            "count": 3100041,
            "maximum": 220418447.5,
            "minimum": 220416722.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 557.7009206,
            "variance": 311030.3168
          },
          {
            "average": 0.5446611835,
            "count": 3100041,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980014645,
            "variance": 0.2480054587
          },
          {
            "average": 0,
            "count": 3100041,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3100041,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3100041,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.263770705,
            "count": 3100041,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4406765059,
            "variance": 0.1941957828
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96311.21211,
          2370565.704,
          2.557612355,
          -95815.27211,
          2371039.304,
          3.657612355
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96311.21211130632,
                2370565.7036147723,
                2.557612355233119
              ],
              [
                -96311.21211130632,
                2371039.303614772,
                2.557612355233119
              ],
              [
                -95815.27211130632,
                2371039.303614772,
                3.657612355233119
              ],
              [
                -95815.27211130632,
                2370565.7036147723,
                3.657612355233119
              ],
              [
                -96311.21211130632,
                2370565.7036147723,
                2.557612355233119
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:27+00:00",
        "end_time": "2018-09-08T04:38:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2275.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2275.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2275.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2275.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6275431,
            71.3161585,
            2.557612355,
            -156.6135187,
            71.32068664,
            3.657612355
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62703222583647,
                  71.31615849614585,
                  2.557612355233119
                ],
                [
                  -156.62754306376175,
                  71.3205068489221,
                  2.557612355233119
                ],
                [
                  -156.61402693542357,
                  71.32068663957793,
                  3.657612355233119
                ],
                [
                  -156.6135187198147,
                  71.31633824656278,
                  3.657612355233119
                ],
                [
                  -156.62703222583647,
                  71.31615849614585,
                  2.557612355233119
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2275.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2275.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:27Z",
            "pc:count": 3100041,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96065.55985,
                "count": 3100041,
                "maximum": -95815.27211,
                "minimum": -96311.21211,
                "name": "X",
                "position": 0,
                "stddev": 133.5670074,
                "variance": 17840.14546
              },
              {
                "average": 2370807.295,
                "count": 3100041,
                "maximum": 2371039.304,
                "minimum": 2370565.704,
                "name": "Y",
                "position": 1,
                "stddev": 127.7581012,
                "variance": 16322.13242
              },
              {
                "average": 2.7598329,
                "count": 3100041,
                "maximum": 3.657612355,
                "minimum": 2.557612355,
                "name": "Z",
                "position": 2,
                "stddev": 0.03258499945,
                "variance": 0.001061782189
              },
              {
                "average": 27967.79347,
                "count": 3100041,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7724.6764,
                "variance": 59670625.49
              },
              {
                "average": 1,
                "count": 3100041,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3100041,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5030194762,
                "count": 3100041,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999909633,
                "variance": 0.2499909634
              },
              {
                "average": 0.0004409619099,
                "count": 3100041,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02099446605,
                "variance": 0.0004407676046
              },
              {
                "average": 1.338619392,
                "count": 3100041,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6695197558,
                "variance": 0.4482567034
              },
              {
                "average": 1.273659433,
                "count": 3100041,
                "maximum": 16.37999916,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.56248273,
                "variance": 111.5660415
              },
              {
                "average": 0.5446611835,
                "count": 3100041,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980014645,
                "variance": 0.2480054587
              },
              {
                "average": 410.4810123,
                "count": 3100041,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9897812405,
                "variance": 0.9796669041
              },
              {
                "average": 220417574.6,
                "count": 3100041,
                "maximum": 220418447.5,
                "minimum": 220416722.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 557.7009206,
                "variance": 311030.3168
              },
              {
                "average": 0.5446611835,
                "count": 3100041,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980014645,
                "variance": 0.2480054587
              },
              {
                "average": 0,
                "count": 3100041,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3100041,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3100041,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.263770705,
                "count": 3100041,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4406765059,
                "variance": 0.1941957828
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96311.21211,
              2370565.704,
              2.557612355,
              -95815.27211,
              2371039.304,
              3.657612355
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96311.21211130632,
                    2370565.7036147723,
                    2.557612355233119
                  ],
                  [
                    -96311.21211130632,
                    2371039.303614772,
                    2.557612355233119
                  ],
                  [
                    -95815.27211130632,
                    2371039.303614772,
                    3.657612355233119
                  ],
                  [
                    -95815.27211130632,
                    2370565.7036147723,
                    3.657612355233119
                  ],
                  [
                    -96311.21211130632,
                    2370565.7036147723,
                    2.557612355233119
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:27+00:00",
            "end_time": "2018-09-08T04:38:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2404.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.34206716068672,
              71.35939680580304,
              0.956008802759418
            ],
            [
              -156.342332998356,
              71.36193129975612,
              0.956008802759418
            ],
            [
              -156.33968627695938,
              71.36196269532296,
              1.416008802759418
            ],
            [
              -156.33942073917618,
              71.35942819726411,
              1.416008802759418
            ],
            [
              -156.34206716068672,
              71.35939680580304,
              0.956008802759418
            ]
          ]
        ]
      },
      "bbox": [
        -156.342333,
        71.35939681,
        0.9560088028,
        -156.3394207,
        71.3619627,
        1.416008803
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:26Z",
        "pc:count": 108910,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -85658.94794,
            "count": 108910,
            "maximum": -85605.71856,
            "minimum": -85702.63856,
            "name": "X",
            "position": 0,
            "stddev": 23.25963248,
            "variance": 541.0105031
          },
          {
            "average": 2375028.629,
            "count": 108910,
            "maximum": 2375152.823,
            "minimum": 2374876.903,
            "name": "Y",
            "position": 1,
            "stddev": 58.43791889,
            "variance": 3414.990364
          },
          {
            "average": 1.186325854,
            "count": 108910,
            "maximum": 1.416008803,
            "minimum": 0.9560088028,
            "name": "Z",
            "position": 2,
            "stddev": 0.05926116461,
            "variance": 0.003511885631
          },
          {
            "average": 21073.30245,
            "count": 108910,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14855.93032,
            "variance": 220698665.5
          },
          {
            "average": 1,
            "count": 108910,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 108910,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4871361675,
            "count": 108910,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998367892,
            "variance": 0.2498368158
          },
          {
            "average": 0.00100082637,
            "count": 108910,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03162015018,
            "variance": 0.0009998338973
          },
          {
            "average": 8.02390965,
            "count": 108910,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.935597659,
            "variance": 3.746538296
          },
          {
            "average": 4.697337637,
            "count": 108910,
            "maximum": 14.3579998,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.04607492,
            "variance": 25.46287209
          },
          {
            "average": 0.4872096226,
            "count": 108910,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998386742,
            "variance": 0.2498387002
          },
          {
            "average": 419.3704159,
            "count": 108910,
            "maximum": 420,
            "minimum": 418,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5441737069,
            "variance": 0.2961250233
          },
          {
            "average": 220422411.6,
            "count": 108910,
            "maximum": 220423006.7,
            "minimum": 220421888.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 486.9519257,
            "variance": 237122.1779
          },
          {
            "average": 0.4872096226,
            "count": 108910,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998386742,
            "variance": 0.2498387002
          },
          {
            "average": 0,
            "count": 108910,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 108910,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 108910,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.009650169865,
            "count": 108910,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.09776058428,
            "variance": 0.009557131839
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -85702.63856,
          2374876.903,
          0.9560088028,
          -85605.71856,
          2375152.823,
          1.416008803
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -85702.63855654902,
                2374876.902543771,
                0.956008802759418
              ],
              [
                -85702.63855654902,
                2375152.822543771,
                0.956008802759418
              ],
              [
                -85605.718556549,
                2375152.822543771,
                1.416008802759418
              ],
              [
                -85605.718556549,
                2374876.902543771,
                1.416008802759418
              ],
              [
                -85702.63855654902,
                2374876.902543771,
                0.956008802759418
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:26+00:00",
        "end_time": "2018-09-08T06:04:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2404.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2404.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2404.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2404.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.342333,
            71.35939681,
            0.9560088028,
            -156.3394207,
            71.3619627,
            1.416008803
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.34206716068672,
                  71.35939680580304,
                  0.956008802759418
                ],
                [
                  -156.342332998356,
                  71.36193129975612,
                  0.956008802759418
                ],
                [
                  -156.33968627695938,
                  71.36196269532296,
                  1.416008802759418
                ],
                [
                  -156.33942073917618,
                  71.35942819726411,
                  1.416008802759418
                ],
                [
                  -156.34206716068672,
                  71.35939680580304,
                  0.956008802759418
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2404.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2404.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:26Z",
            "pc:count": 108910,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -85658.94794,
                "count": 108910,
                "maximum": -85605.71856,
                "minimum": -85702.63856,
                "name": "X",
                "position": 0,
                "stddev": 23.25963248,
                "variance": 541.0105031
              },
              {
                "average": 2375028.629,
                "count": 108910,
                "maximum": 2375152.823,
                "minimum": 2374876.903,
                "name": "Y",
                "position": 1,
                "stddev": 58.43791889,
                "variance": 3414.990364
              },
              {
                "average": 1.186325854,
                "count": 108910,
                "maximum": 1.416008803,
                "minimum": 0.9560088028,
                "name": "Z",
                "position": 2,
                "stddev": 0.05926116461,
                "variance": 0.003511885631
              },
              {
                "average": 21073.30245,
                "count": 108910,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14855.93032,
                "variance": 220698665.5
              },
              {
                "average": 1,
                "count": 108910,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 108910,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4871361675,
                "count": 108910,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998367892,
                "variance": 0.2498368158
              },
              {
                "average": 0.00100082637,
                "count": 108910,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03162015018,
                "variance": 0.0009998338973
              },
              {
                "average": 8.02390965,
                "count": 108910,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.935597659,
                "variance": 3.746538296
              },
              {
                "average": 4.697337637,
                "count": 108910,
                "maximum": 14.3579998,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.04607492,
                "variance": 25.46287209
              },
              {
                "average": 0.4872096226,
                "count": 108910,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998386742,
                "variance": 0.2498387002
              },
              {
                "average": 419.3704159,
                "count": 108910,
                "maximum": 420,
                "minimum": 418,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5441737069,
                "variance": 0.2961250233
              },
              {
                "average": 220422411.6,
                "count": 108910,
                "maximum": 220423006.7,
                "minimum": 220421888.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 486.9519257,
                "variance": 237122.1779
              },
              {
                "average": 0.4872096226,
                "count": 108910,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998386742,
                "variance": 0.2498387002
              },
              {
                "average": 0,
                "count": 108910,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 108910,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 108910,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.009650169865,
                "count": 108910,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.09776058428,
                "variance": 0.009557131839
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -85702.63856,
              2374876.903,
              0.9560088028,
              -85605.71856,
              2375152.823,
              1.416008803
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -85702.63855654902,
                    2374876.902543771,
                    0.956008802759418
                  ],
                  [
                    -85702.63855654902,
                    2375152.822543771,
                    0.956008802759418
                  ],
                  [
                    -85605.718556549,
                    2375152.822543771,
                    1.416008802759418
                  ],
                  [
                    -85605.718556549,
                    2374876.902543771,
                    1.416008802759418
                  ],
                  [
                    -85702.63855654902,
                    2374876.902543771,
                    0.956008802759418
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:26+00:00",
            "end_time": "2018-09-08T06:04:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2387.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4958347493722,
              71.35968253092624,
              0.833059775935918
            ],
            [
              -156.495926898826,
              71.360506958688,
              0.833059775935918
            ],
            [
              -156.49378406033384,
              71.36053405060032,
              1.373059775935918
            ],
            [
              -156.49369198984462,
              71.35970962168606,
              1.373059775935918
            ],
            [
              -156.4958347493722,
              71.35968253092624,
              0.833059775935918
            ]
          ]
        ]
      },
      "bbox": [
        -156.4959269,
        71.35968253,
        0.8330597759,
        -156.493692,
        71.36053405,
        1.373059776
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:39Z",
        "pc:count": 32128,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91298.17625,
            "count": 32128,
            "maximum": -91247.19925,
            "minimum": -91325.67925,
            "name": "X",
            "position": 0,
            "stddev": 17.51780602,
            "variance": 306.8735277
          },
          {
            "average": 2375171.682,
            "count": 32128,
            "maximum": 2375202.674,
            "minimum": 2375112.914,
            "name": "Y",
            "position": 1,
            "stddev": 20.63473872,
            "variance": 425.7924421
          },
          {
            "average": 1.111574467,
            "count": 32128,
            "maximum": 1.373059776,
            "minimum": 0.8330597759,
            "name": "Z",
            "position": 2,
            "stddev": 0.07101571802,
            "variance": 0.005043232205
          },
          {
            "average": 15678.49763,
            "count": 32128,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11593.55163,
            "variance": 134410439.4
          },
          {
            "average": 1,
            "count": 32128,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 32128,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4912537351,
            "count": 32128,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999312774,
            "variance": 0.2499312821
          },
          {
            "average": 0.0006536354582,
            "count": 32128,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02555833623,
            "variance": 0.0006532285509
          },
          {
            "average": 7.537350598,
            "count": 32128,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.604453611,
            "variance": 6.783178612
          },
          {
            "average": 3.56787811,
            "count": 32128,
            "maximum": 11.04599953,
            "minimum": -15.71399975,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.684194725,
            "variance": 32.31006967
          },
          {
            "average": 0.4728896912,
            "count": 32128,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992722603,
            "variance": 0.2492727899
          },
          {
            "average": 409.1899589,
            "count": 32128,
            "maximum": 410,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5461740756,
            "variance": 0.2983061209
          },
          {
            "average": 220416807.6,
            "count": 32128,
            "maximum": 220417439.4,
            "minimum": 220416300.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 384.4801011,
            "variance": 147824.9482
          },
          {
            "average": 0.4728896912,
            "count": 32128,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992722603,
            "variance": 0.2492727899
          },
          {
            "average": 0,
            "count": 32128,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 32128,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 32128,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07174427291,
            "count": 32128,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2580680243,
            "variance": 0.06659910514
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91325.67925,
          2375112.914,
          0.8330597759,
          -91247.19925,
          2375202.674,
          1.373059776
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91325.67924846297,
                2375112.9135871967,
                0.833059775935918
              ],
              [
                -91325.67924846297,
                2375202.6735871965,
                0.833059775935918
              ],
              [
                -91247.19924846296,
                2375202.6735871965,
                1.373059775935918
              ],
              [
                -91247.19924846296,
                2375112.9135871967,
                1.373059775935918
              ],
              [
                -91325.67924846297,
                2375112.9135871967,
                0.833059775935918
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:39+00:00",
        "end_time": "2018-09-08T04:31:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2387.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2387.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2387.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2387.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4959269,
            71.35968253,
            0.8330597759,
            -156.493692,
            71.36053405,
            1.373059776
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4958347493722,
                  71.35968253092624,
                  0.833059775935918
                ],
                [
                  -156.495926898826,
                  71.360506958688,
                  0.833059775935918
                ],
                [
                  -156.49378406033384,
                  71.36053405060032,
                  1.373059775935918
                ],
                [
                  -156.49369198984462,
                  71.35970962168606,
                  1.373059775935918
                ],
                [
                  -156.4958347493722,
                  71.35968253092624,
                  0.833059775935918
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2387.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2387.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:39Z",
            "pc:count": 32128,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91298.17625,
                "count": 32128,
                "maximum": -91247.19925,
                "minimum": -91325.67925,
                "name": "X",
                "position": 0,
                "stddev": 17.51780602,
                "variance": 306.8735277
              },
              {
                "average": 2375171.682,
                "count": 32128,
                "maximum": 2375202.674,
                "minimum": 2375112.914,
                "name": "Y",
                "position": 1,
                "stddev": 20.63473872,
                "variance": 425.7924421
              },
              {
                "average": 1.111574467,
                "count": 32128,
                "maximum": 1.373059776,
                "minimum": 0.8330597759,
                "name": "Z",
                "position": 2,
                "stddev": 0.07101571802,
                "variance": 0.005043232205
              },
              {
                "average": 15678.49763,
                "count": 32128,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11593.55163,
                "variance": 134410439.4
              },
              {
                "average": 1,
                "count": 32128,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 32128,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4912537351,
                "count": 32128,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999312774,
                "variance": 0.2499312821
              },
              {
                "average": 0.0006536354582,
                "count": 32128,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02555833623,
                "variance": 0.0006532285509
              },
              {
                "average": 7.537350598,
                "count": 32128,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.604453611,
                "variance": 6.783178612
              },
              {
                "average": 3.56787811,
                "count": 32128,
                "maximum": 11.04599953,
                "minimum": -15.71399975,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.684194725,
                "variance": 32.31006967
              },
              {
                "average": 0.4728896912,
                "count": 32128,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992722603,
                "variance": 0.2492727899
              },
              {
                "average": 409.1899589,
                "count": 32128,
                "maximum": 410,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5461740756,
                "variance": 0.2983061209
              },
              {
                "average": 220416807.6,
                "count": 32128,
                "maximum": 220417439.4,
                "minimum": 220416300.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 384.4801011,
                "variance": 147824.9482
              },
              {
                "average": 0.4728896912,
                "count": 32128,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992722603,
                "variance": 0.2492727899
              },
              {
                "average": 0,
                "count": 32128,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 32128,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 32128,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07174427291,
                "count": 32128,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2580680243,
                "variance": 0.06659910514
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91325.67925,
              2375112.914,
              0.8330597759,
              -91247.19925,
              2375202.674,
              1.373059776
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91325.67924846297,
                    2375112.9135871967,
                    0.833059775935918
                  ],
                  [
                    -91325.67924846297,
                    2375202.6735871965,
                    0.833059775935918
                  ],
                  [
                    -91247.19924846296,
                    2375202.6735871965,
                    1.373059775935918
                  ],
                  [
                    -91247.19924846296,
                    2375112.9135871967,
                    1.373059775935918
                  ],
                  [
                    -91325.67924846297,
                    2375112.9135871967,
                    0.833059775935918
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:39+00:00",
            "end_time": "2018-09-08T04:31:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2405.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.52090139290763,
              71.36454684746127,
              0.887188649718957
            ],
            [
              -156.52137390751398,
              71.3687308353341,
              0.887188649718957
            ],
            [
              -156.50796705597688,
              71.36890163197826,
              4.787188649718956
            ],
            [
              -156.50749704907227,
              71.36471760722131,
              4.787188649718956
            ],
            [
              -156.52090139290763,
              71.36454684746127,
              0.887188649718957
            ]
          ]
        ]
      },
      "bbox": [
        -156.5213739,
        71.36454685,
        0.8871886497,
        -156.507497,
        71.36890163,
        4.78718865
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:47Z",
        "pc:count": 1157246,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91894.99569,
            "count": 1157246,
            "maximum": -91731.53633,
            "minimum": -92222.37633,
            "name": "X",
            "position": 0,
            "stddev": 99.25792264,
            "variance": 9852.135208
          },
          {
            "average": 2375872.916,
            "count": 1157246,
            "maximum": 2376131.92,
            "minimum": 2375676.4,
            "name": "Y",
            "position": 1,
            "stddev": 125.2585299,
            "variance": 15689.69932
          },
          {
            "average": 1.319081445,
            "count": 1157246,
            "maximum": 4.78718865,
            "minimum": 0.8871886497,
            "name": "Z",
            "position": 2,
            "stddev": 0.5029517598,
            "variance": 0.2529604727
          },
          {
            "average": 14624.46292,
            "count": 1157246,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10473.44041,
            "variance": 109692953.9
          },
          {
            "average": 1,
            "count": 1157246,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1157246,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5083145675,
            "count": 1157246,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999310792,
            "variance": 0.2499310839
          },
          {
            "average": 0.0005037822555,
            "count": 1157246,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0224394495,
            "variance": 0.000503528894
          },
          {
            "average": 7.095545804,
            "count": 1157246,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.97319743,
            "variance": 8.83990296
          },
          {
            "average": -2.628785667,
            "count": 1157246,
            "maximum": 16.39800072,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.297216061,
            "variance": 53.24936224
          },
          {
            "average": 0.4833483978,
            "count": 1157246,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997228631,
            "variance": 0.2497229399
          },
          {
            "average": 406.7549942,
            "count": 1157246,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6759819887,
            "variance": 0.4569516491
          },
          {
            "average": 220415465.6,
            "count": 1157246,
            "maximum": 220416307.6,
            "minimum": 220414334.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 358.0506617,
            "variance": 128200.2763
          },
          {
            "average": 0.4833483978,
            "count": 1157246,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997228631,
            "variance": 0.2497229399
          },
          {
            "average": 0,
            "count": 1157246,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1157246,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1157246,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06992549553,
            "count": 1157246,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2550215222,
            "variance": 0.0650359768
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92222.37633,
          2375676.4,
          0.8871886497,
          -91731.53633,
          2376131.92,
          4.78718865
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92222.37632717601,
                2375676.3996673394,
                0.887188649718957
              ],
              [
                -92222.37632717601,
                2376131.919667339,
                0.887188649718957
              ],
              [
                -91731.53632717601,
                2376131.919667339,
                4.787188649718956
              ],
              [
                -91731.53632717601,
                2375676.3996673394,
                4.787188649718956
              ],
              [
                -92222.37632717601,
                2375676.3996673394,
                0.887188649718957
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:47+00:00",
        "end_time": "2018-09-08T03:58:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2405.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2405.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2405.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2405.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5213739,
            71.36454685,
            0.8871886497,
            -156.507497,
            71.36890163,
            4.78718865
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.52090139290763,
                  71.36454684746127,
                  0.887188649718957
                ],
                [
                  -156.52137390751398,
                  71.3687308353341,
                  0.887188649718957
                ],
                [
                  -156.50796705597688,
                  71.36890163197826,
                  4.787188649718956
                ],
                [
                  -156.50749704907227,
                  71.36471760722131,
                  4.787188649718956
                ],
                [
                  -156.52090139290763,
                  71.36454684746127,
                  0.887188649718957
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2405.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2405.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:47Z",
            "pc:count": 1157246,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91894.99569,
                "count": 1157246,
                "maximum": -91731.53633,
                "minimum": -92222.37633,
                "name": "X",
                "position": 0,
                "stddev": 99.25792264,
                "variance": 9852.135208
              },
              {
                "average": 2375872.916,
                "count": 1157246,
                "maximum": 2376131.92,
                "minimum": 2375676.4,
                "name": "Y",
                "position": 1,
                "stddev": 125.2585299,
                "variance": 15689.69932
              },
              {
                "average": 1.319081445,
                "count": 1157246,
                "maximum": 4.78718865,
                "minimum": 0.8871886497,
                "name": "Z",
                "position": 2,
                "stddev": 0.5029517598,
                "variance": 0.2529604727
              },
              {
                "average": 14624.46292,
                "count": 1157246,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10473.44041,
                "variance": 109692953.9
              },
              {
                "average": 1,
                "count": 1157246,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1157246,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5083145675,
                "count": 1157246,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999310792,
                "variance": 0.2499310839
              },
              {
                "average": 0.0005037822555,
                "count": 1157246,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0224394495,
                "variance": 0.000503528894
              },
              {
                "average": 7.095545804,
                "count": 1157246,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.97319743,
                "variance": 8.83990296
              },
              {
                "average": -2.628785667,
                "count": 1157246,
                "maximum": 16.39800072,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.297216061,
                "variance": 53.24936224
              },
              {
                "average": 0.4833483978,
                "count": 1157246,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997228631,
                "variance": 0.2497229399
              },
              {
                "average": 406.7549942,
                "count": 1157246,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6759819887,
                "variance": 0.4569516491
              },
              {
                "average": 220415465.6,
                "count": 1157246,
                "maximum": 220416307.6,
                "minimum": 220414334.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 358.0506617,
                "variance": 128200.2763
              },
              {
                "average": 0.4833483978,
                "count": 1157246,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997228631,
                "variance": 0.2497229399
              },
              {
                "average": 0,
                "count": 1157246,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1157246,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1157246,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06992549553,
                "count": 1157246,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2550215222,
                "variance": 0.0650359768
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92222.37633,
              2375676.4,
              0.8871886497,
              -91731.53633,
              2376131.92,
              4.78718865
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92222.37632717601,
                    2375676.3996673394,
                    0.887188649718957
                  ],
                  [
                    -92222.37632717601,
                    2376131.919667339,
                    0.887188649718957
                  ],
                  [
                    -91731.53632717601,
                    2376131.919667339,
                    4.787188649718956
                  ],
                  [
                    -91731.53632717601,
                    2375676.3996673394,
                    4.787188649718956
                  ],
                  [
                    -92222.37632717601,
                    2375676.3996673394,
                    0.887188649718957
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:47+00:00",
            "end_time": "2018-09-08T03:58:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2330.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6130787588464,
              71.33245130698441,
              0.929360283471194
            ],
            [
              -156.61358710480084,
              71.33679889164195,
              0.929360283471194
            ],
            [
              -156.60005774315414,
              71.33697778801346,
              39.8493602834712
            ],
            [
              -156.5995520232847,
              71.33263016328655,
              39.8493602834712
            ],
            [
              -156.6130787588464,
              71.33245130698441,
              0.929360283471194
            ]
          ]
        ]
      },
      "bbox": [
        -156.6135871,
        71.33245131,
        0.9293602835,
        -156.599552,
        71.33697779,
        39.84936028
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:16Z",
        "pc:count": 2070663,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95454.62371,
            "count": 2070663,
            "maximum": -95234.11339,
            "minimum": -95730.17339,
            "name": "X",
            "position": 0,
            "stddev": 138.1361306,
            "variance": 19081.59058
          },
          {
            "average": 2372552.709,
            "count": 2070663,
            "maximum": 2372790.677,
            "minimum": 2372317.217,
            "name": "Y",
            "position": 1,
            "stddev": 126.7932469,
            "variance": 16076.52745
          },
          {
            "average": 1.255166202,
            "count": 2070663,
            "maximum": 39.84936028,
            "minimum": 0.9293602835,
            "name": "Z",
            "position": 2,
            "stddev": 0.1956574976,
            "variance": 0.03828185637
          },
          {
            "average": 24713.30069,
            "count": 2070663,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13482.18806,
            "variance": 181769394.8
          },
          {
            "average": 1.000001932,
            "count": 2070663,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001389872524,
            "variance": 1.931745632e-06
          },
          {
            "average": 1.000003863,
            "count": 2070663,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001965574674,
            "variance": 3.8634838e-06
          },
          {
            "average": 0.4948579271,
            "count": 2070663,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999736791,
            "variance": 0.2499736798
          },
          {
            "average": 0.0005375090007,
            "count": 2070663,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02317801424,
            "variance": 0.0005372203443
          },
          {
            "average": 5.354210704,
            "count": 2070663,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.731849817,
            "variance": 13.92670306
          },
          {
            "average": 2.512090603,
            "count": 2070663,
            "maximum": 16.26600075,
            "minimum": -16.36199951,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.215094096,
            "variance": 67.48777101
          },
          {
            "average": 0.4939905721,
            "count": 2070663,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999640062,
            "variance": 0.2499640075
          },
          {
            "average": 407.7301067,
            "count": 2070663,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7524880275,
            "variance": 0.5662382316
          },
          {
            "average": 220416010.1,
            "count": 2070663,
            "maximum": 220417356,
            "minimum": 220415091.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 443.6346157,
            "variance": 196811.6723
          },
          {
            "average": 0.4939905721,
            "count": 2070663,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999640062,
            "variance": 0.2499640075
          },
          {
            "average": 0,
            "count": 2070663,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2070663,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2070663,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09990568238,
            "count": 2070663,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2998742744,
            "variance": 0.08992458044
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95730.17339,
          2372317.217,
          0.9293602835,
          -95234.11339,
          2372790.677,
          39.84936028
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95730.17338870015,
                2372317.2172485576,
                0.929360283471194
              ],
              [
                -95730.17338870015,
                2372790.6772485576,
                0.929360283471194
              ],
              [
                -95234.11338870015,
                2372790.6772485576,
                39.8493602834712
              ],
              [
                -95234.11338870015,
                2372317.2172485576,
                39.8493602834712
              ],
              [
                -95730.17338870015,
                2372317.2172485576,
                0.929360283471194
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:16+00:00",
        "end_time": "2018-09-08T04:11:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2330.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2330.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2330.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2330.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6135871,
            71.33245131,
            0.9293602835,
            -156.599552,
            71.33697779,
            39.84936028
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6130787588464,
                  71.33245130698441,
                  0.929360283471194
                ],
                [
                  -156.61358710480084,
                  71.33679889164195,
                  0.929360283471194
                ],
                [
                  -156.60005774315414,
                  71.33697778801346,
                  39.8493602834712
                ],
                [
                  -156.5995520232847,
                  71.33263016328655,
                  39.8493602834712
                ],
                [
                  -156.6130787588464,
                  71.33245130698441,
                  0.929360283471194
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2330.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2330.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:16Z",
            "pc:count": 2070663,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95454.62371,
                "count": 2070663,
                "maximum": -95234.11339,
                "minimum": -95730.17339,
                "name": "X",
                "position": 0,
                "stddev": 138.1361306,
                "variance": 19081.59058
              },
              {
                "average": 2372552.709,
                "count": 2070663,
                "maximum": 2372790.677,
                "minimum": 2372317.217,
                "name": "Y",
                "position": 1,
                "stddev": 126.7932469,
                "variance": 16076.52745
              },
              {
                "average": 1.255166202,
                "count": 2070663,
                "maximum": 39.84936028,
                "minimum": 0.9293602835,
                "name": "Z",
                "position": 2,
                "stddev": 0.1956574976,
                "variance": 0.03828185637
              },
              {
                "average": 24713.30069,
                "count": 2070663,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13482.18806,
                "variance": 181769394.8
              },
              {
                "average": 1.000001932,
                "count": 2070663,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001389872524,
                "variance": 1.931745632e-06
              },
              {
                "average": 1.000003863,
                "count": 2070663,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001965574674,
                "variance": 3.8634838e-06
              },
              {
                "average": 0.4948579271,
                "count": 2070663,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999736791,
                "variance": 0.2499736798
              },
              {
                "average": 0.0005375090007,
                "count": 2070663,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02317801424,
                "variance": 0.0005372203443
              },
              {
                "average": 5.354210704,
                "count": 2070663,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.731849817,
                "variance": 13.92670306
              },
              {
                "average": 2.512090603,
                "count": 2070663,
                "maximum": 16.26600075,
                "minimum": -16.36199951,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.215094096,
                "variance": 67.48777101
              },
              {
                "average": 0.4939905721,
                "count": 2070663,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999640062,
                "variance": 0.2499640075
              },
              {
                "average": 407.7301067,
                "count": 2070663,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7524880275,
                "variance": 0.5662382316
              },
              {
                "average": 220416010.1,
                "count": 2070663,
                "maximum": 220417356,
                "minimum": 220415091.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 443.6346157,
                "variance": 196811.6723
              },
              {
                "average": 0.4939905721,
                "count": 2070663,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999640062,
                "variance": 0.2499640075
              },
              {
                "average": 0,
                "count": 2070663,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2070663,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2070663,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09990568238,
                "count": 2070663,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2998742744,
                "variance": 0.08992458044
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95730.17339,
              2372317.217,
              0.9293602835,
              -95234.11339,
              2372790.677,
              39.84936028
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95730.17338870015,
                    2372317.2172485576,
                    0.929360283471194
                  ],
                  [
                    -95730.17338870015,
                    2372790.6772485576,
                    0.929360283471194
                  ],
                  [
                    -95234.11338870015,
                    2372790.6772485576,
                    39.8493602834712
                  ],
                  [
                    -95234.11338870015,
                    2372317.2172485576,
                    39.8493602834712
                  ],
                  [
                    -95730.17338870015,
                    2372317.2172485576,
                    0.929360283471194
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:16+00:00",
            "end_time": "2018-09-08T04:11:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2255.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69120967118027,
              71.31251673758666,
              1.395854449284268
            ],
            [
              -156.69173271996854,
              71.31686334563555,
              1.395854449284268
            ],
            [
              -156.67821985805642,
              71.31704752558261,
              1.775854449284268
            ],
            [
              -156.6776994293346,
              71.31270087633762,
              1.775854449284268
            ],
            [
              -156.69120967118027,
              71.31251673758666,
              1.395854449284268
            ]
          ]
        ]
      },
      "bbox": [
        -156.6917327,
        71.31251674,
        1.395854449,
        -156.6776994,
        71.31704753,
        1.775854449
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:25Z",
        "pc:count": 1569758,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98426.04206,
            "count": 1569758,
            "maximum": -98182.92421,
            "minimum": -98678.84421,
            "name": "X",
            "position": 0,
            "stddev": 135.0432288,
            "variance": 18236.67364
          },
          {
            "average": 2370495.504,
            "count": 1569758,
            "maximum": 2370737.335,
            "minimum": 2370263.895,
            "name": "Y",
            "position": 1,
            "stddev": 129.3820611,
            "variance": 16739.71773
          },
          {
            "average": 1.580730048,
            "count": 1569758,
            "maximum": 1.775854449,
            "minimum": 1.395854449,
            "name": "Z",
            "position": 2,
            "stddev": 0.03199649099,
            "variance": 0.001023775436
          },
          {
            "average": 18461.2861,
            "count": 1569758,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13714.59601,
            "variance": 188090143.7
          },
          {
            "average": 1,
            "count": 1569758,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1569758,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4974582069,
            "count": 1569758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999936985,
            "variance": 0.2499936985
          },
          {
            "average": 0.0006759003617,
            "count": 1569758,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02598930454,
            "variance": 0.0006754439507
          },
          {
            "average": 8.521388647,
            "count": 1569758,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.252702227,
            "variance": 1.569262871
          },
          {
            "average": 1.346435279,
            "count": 1569758,
            "maximum": 16.2840004,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.309460272,
            "variance": 39.80928893
          },
          {
            "average": 0.4881924475,
            "count": 1569758,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998607215,
            "variance": 0.2498607409
          },
          {
            "average": 407.0940463,
            "count": 1569758,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6302584973,
            "variance": 0.3972257734
          },
          {
            "average": 220415660.5,
            "count": 1569758,
            "maximum": 220416765.7,
            "minimum": 220414482.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 352.5964477,
            "variance": 124324.255
          },
          {
            "average": 0.4881924475,
            "count": 1569758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998607215,
            "variance": 0.2498607409
          },
          {
            "average": 0,
            "count": 1569758,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1569758,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1569758,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01674079699,
            "count": 1569758,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1282986874,
            "variance": 0.01646055319
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98678.84421,
          2370263.895,
          1.395854449,
          -98182.92421,
          2370737.335,
          1.775854449
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98678.84420824402,
                2370263.8953960747,
                1.395854449284268
              ],
              [
                -98678.84420824402,
                2370737.335396075,
                1.395854449284268
              ],
              [
                -98182.924208244,
                2370737.335396075,
                1.775854449284268
              ],
              [
                -98182.924208244,
                2370263.8953960747,
                1.775854449284268
              ],
              [
                -98678.84420824402,
                2370263.8953960747,
                1.395854449284268
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:25+00:00",
        "end_time": "2018-09-08T04:01:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2255.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2255.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2255.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2255.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6917327,
            71.31251674,
            1.395854449,
            -156.6776994,
            71.31704753,
            1.775854449
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69120967118027,
                  71.31251673758666,
                  1.395854449284268
                ],
                [
                  -156.69173271996854,
                  71.31686334563555,
                  1.395854449284268
                ],
                [
                  -156.67821985805642,
                  71.31704752558261,
                  1.775854449284268
                ],
                [
                  -156.6776994293346,
                  71.31270087633762,
                  1.775854449284268
                ],
                [
                  -156.69120967118027,
                  71.31251673758666,
                  1.395854449284268
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2255.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2255.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:25Z",
            "pc:count": 1569758,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98426.04206,
                "count": 1569758,
                "maximum": -98182.92421,
                "minimum": -98678.84421,
                "name": "X",
                "position": 0,
                "stddev": 135.0432288,
                "variance": 18236.67364
              },
              {
                "average": 2370495.504,
                "count": 1569758,
                "maximum": 2370737.335,
                "minimum": 2370263.895,
                "name": "Y",
                "position": 1,
                "stddev": 129.3820611,
                "variance": 16739.71773
              },
              {
                "average": 1.580730048,
                "count": 1569758,
                "maximum": 1.775854449,
                "minimum": 1.395854449,
                "name": "Z",
                "position": 2,
                "stddev": 0.03199649099,
                "variance": 0.001023775436
              },
              {
                "average": 18461.2861,
                "count": 1569758,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13714.59601,
                "variance": 188090143.7
              },
              {
                "average": 1,
                "count": 1569758,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1569758,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4974582069,
                "count": 1569758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999936985,
                "variance": 0.2499936985
              },
              {
                "average": 0.0006759003617,
                "count": 1569758,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02598930454,
                "variance": 0.0006754439507
              },
              {
                "average": 8.521388647,
                "count": 1569758,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.252702227,
                "variance": 1.569262871
              },
              {
                "average": 1.346435279,
                "count": 1569758,
                "maximum": 16.2840004,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.309460272,
                "variance": 39.80928893
              },
              {
                "average": 0.4881924475,
                "count": 1569758,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998607215,
                "variance": 0.2498607409
              },
              {
                "average": 407.0940463,
                "count": 1569758,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6302584973,
                "variance": 0.3972257734
              },
              {
                "average": 220415660.5,
                "count": 1569758,
                "maximum": 220416765.7,
                "minimum": 220414482.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 352.5964477,
                "variance": 124324.255
              },
              {
                "average": 0.4881924475,
                "count": 1569758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998607215,
                "variance": 0.2498607409
              },
              {
                "average": 0,
                "count": 1569758,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1569758,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1569758,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01674079699,
                "count": 1569758,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1282986874,
                "variance": 0.01646055319
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98678.84421,
              2370263.895,
              1.395854449,
              -98182.92421,
              2370737.335,
              1.775854449
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98678.84420824402,
                    2370263.8953960747,
                    1.395854449284268
                  ],
                  [
                    -98678.84420824402,
                    2370737.335396075,
                    1.395854449284268
                  ],
                  [
                    -98182.924208244,
                    2370737.335396075,
                    1.775854449284268
                  ],
                  [
                    -98182.924208244,
                    2370263.8953960747,
                    1.775854449284268
                  ],
                  [
                    -98678.84420824402,
                    2370263.8953960747,
                    1.395854449284268
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:25+00:00",
            "end_time": "2018-09-08T04:01:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2392.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.35522420081463,
              71.35512276440573,
              0.908513179772539
            ],
            [
              -156.35566734871543,
              71.359324502105,
              0.908513179772539
            ],
            [
              -156.3424074537013,
              71.35948234682093,
              1.528513179772539
            ],
            [
              -156.341966796101,
              71.35528057490863,
              1.528513179772539
            ],
            [
              -156.35522420081463,
              71.35512276440573,
              0.908513179772539
            ]
          ]
        ]
      },
      "bbox": [
        -156.3556673,
        71.35512276,
        0.9085131798,
        -156.3419668,
        71.35948235,
        1.52851318
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:22Z",
        "pc:count": 1288521,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86016.01773,
            "count": 1288521,
            "maximum": -85714.75745,
            "minimum": -86200.37745,
            "name": "X",
            "position": 0,
            "stddev": 110.7703345,
            "variance": 12270.06702
          },
          {
            "average": 2374679.581,
            "count": 1288521,
            "maximum": 2374886.643,
            "minimum": 2374429.203,
            "name": "Y",
            "position": 1,
            "stddev": 123.6874243,
            "variance": 15298.57892
          },
          {
            "average": 1.172222712,
            "count": 1288521,
            "maximum": 1.52851318,
            "minimum": 0.9085131798,
            "name": "Z",
            "position": 2,
            "stddev": 0.05069132508,
            "variance": 0.002569610438
          },
          {
            "average": 16978.53614,
            "count": 1288521,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12049.21282,
            "variance": 145183529.7
          },
          {
            "average": 1,
            "count": 1288521,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1288521,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4888333213,
            "count": 1288521,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998754837,
            "variance": 0.2498754992
          },
          {
            "average": 0.0003841613757,
            "count": 1288521,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01959627755,
            "variance": 0.0003840140938
          },
          {
            "average": 7.991227927,
            "count": 1288521,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.084173407,
            "variance": 4.343778792
          },
          {
            "average": 4.119964275,
            "count": 1288521,
            "maximum": 16.34399986,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.743870788,
            "variance": 32.99205163
          },
          {
            "average": 0.4833176952,
            "count": 1288521,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997218171,
            "variance": 0.2497218945
          },
          {
            "average": 419.3345983,
            "count": 1288521,
            "maximum": 420,
            "minimum": 418,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6038615733,
            "variance": 0.3646487997
          },
          {
            "average": 220422410.2,
            "count": 1288521,
            "maximum": 220423002.4,
            "minimum": 220421878,
            "name": "GpsTime",
            "position": 12,
            "stddev": 485.758397,
            "variance": 235961.2203
          },
          {
            "average": 0.4833176952,
            "count": 1288521,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997218171,
            "variance": 0.2497218945
          },
          {
            "average": 0,
            "count": 1288521,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1288521,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1288521,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02524056651,
            "count": 1288521,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1568550267,
            "variance": 0.02460349941
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86200.37745,
          2374429.203,
          0.9085131798,
          -85714.75745,
          2374886.643,
          1.52851318
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86200.3774492428,
                2374429.2027189475,
                0.908513179772539
              ],
              [
                -86200.3774492428,
                2374886.642718948,
                0.908513179772539
              ],
              [
                -85714.75744924281,
                2374886.642718948,
                1.528513179772539
              ],
              [
                -85714.75744924281,
                2374429.2027189475,
                1.528513179772539
              ],
              [
                -86200.3774492428,
                2374429.2027189475,
                0.908513179772539
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:22+00:00",
        "end_time": "2018-09-08T06:04:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2392.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2392.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2392.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2392.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3556673,
            71.35512276,
            0.9085131798,
            -156.3419668,
            71.35948235,
            1.52851318
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.35522420081463,
                  71.35512276440573,
                  0.908513179772539
                ],
                [
                  -156.35566734871543,
                  71.359324502105,
                  0.908513179772539
                ],
                [
                  -156.3424074537013,
                  71.35948234682093,
                  1.528513179772539
                ],
                [
                  -156.341966796101,
                  71.35528057490863,
                  1.528513179772539
                ],
                [
                  -156.35522420081463,
                  71.35512276440573,
                  0.908513179772539
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2392.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2392.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:22Z",
            "pc:count": 1288521,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86016.01773,
                "count": 1288521,
                "maximum": -85714.75745,
                "minimum": -86200.37745,
                "name": "X",
                "position": 0,
                "stddev": 110.7703345,
                "variance": 12270.06702
              },
              {
                "average": 2374679.581,
                "count": 1288521,
                "maximum": 2374886.643,
                "minimum": 2374429.203,
                "name": "Y",
                "position": 1,
                "stddev": 123.6874243,
                "variance": 15298.57892
              },
              {
                "average": 1.172222712,
                "count": 1288521,
                "maximum": 1.52851318,
                "minimum": 0.9085131798,
                "name": "Z",
                "position": 2,
                "stddev": 0.05069132508,
                "variance": 0.002569610438
              },
              {
                "average": 16978.53614,
                "count": 1288521,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12049.21282,
                "variance": 145183529.7
              },
              {
                "average": 1,
                "count": 1288521,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1288521,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4888333213,
                "count": 1288521,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998754837,
                "variance": 0.2498754992
              },
              {
                "average": 0.0003841613757,
                "count": 1288521,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01959627755,
                "variance": 0.0003840140938
              },
              {
                "average": 7.991227927,
                "count": 1288521,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.084173407,
                "variance": 4.343778792
              },
              {
                "average": 4.119964275,
                "count": 1288521,
                "maximum": 16.34399986,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.743870788,
                "variance": 32.99205163
              },
              {
                "average": 0.4833176952,
                "count": 1288521,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997218171,
                "variance": 0.2497218945
              },
              {
                "average": 419.3345983,
                "count": 1288521,
                "maximum": 420,
                "minimum": 418,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6038615733,
                "variance": 0.3646487997
              },
              {
                "average": 220422410.2,
                "count": 1288521,
                "maximum": 220423002.4,
                "minimum": 220421878,
                "name": "GpsTime",
                "position": 12,
                "stddev": 485.758397,
                "variance": 235961.2203
              },
              {
                "average": 0.4833176952,
                "count": 1288521,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997218171,
                "variance": 0.2497218945
              },
              {
                "average": 0,
                "count": 1288521,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1288521,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1288521,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02524056651,
                "count": 1288521,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1568550267,
                "variance": 0.02460349941
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86200.37745,
              2374429.203,
              0.9085131798,
              -85714.75745,
              2374886.643,
              1.52851318
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86200.3774492428,
                    2374429.2027189475,
                    0.908513179772539
                  ],
                  [
                    -86200.3774492428,
                    2374886.642718948,
                    0.908513179772539
                  ],
                  [
                    -85714.75744924281,
                    2374886.642718948,
                    1.528513179772539
                  ],
                  [
                    -85714.75744924281,
                    2374429.2027189475,
                    1.528513179772539
                  ],
                  [
                    -86200.3774492428,
                    2374429.2027189475,
                    0.908513179772539
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:22+00:00",
            "end_time": "2018-09-08T06:04:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2197.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71757761242543,
              71.30040114098135,
              3.654841291036399
            ],
            [
              -156.7181055418682,
              71.30474768932658,
              3.654841291036399
            ],
            [
              -156.70460184416226,
              71.30493363990671,
              18.4148412910364
            ],
            [
              -156.7040765316866,
              71.3005870499991,
              18.4148412910364
            ],
            [
              -156.71757761242543,
              71.30040114098135,
              3.654841291036399
            ]
          ]
        ]
      },
      "bbox": [
        -156.7181055,
        71.30040114,
        3.654841291,
        -156.7040765,
        71.30493364,
        18.41484129
      ],
      "properties": {
        "datetime": "2018-09-08T04:47:48Z",
        "pc:count": 2652129,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99449.60412,
            "count": 2652129,
            "maximum": -99203.22745,
            "minimum": -99699.08745,
            "name": "X",
            "position": 0,
            "stddev": 137.0790867,
            "variance": 18790.67601
          },
          {
            "average": 2369214.656,
            "count": 2652129,
            "maximum": 2369459.209,
            "minimum": 2368985.729,
            "name": "Y",
            "position": 1,
            "stddev": 129.6162656,
            "variance": 16800.3763
          },
          {
            "average": 6.393289259,
            "count": 2652129,
            "maximum": 18.41484129,
            "minimum": 3.654841291,
            "name": "Z",
            "position": 2,
            "stddev": 0.2474680879,
            "variance": 0.06124045455
          },
          {
            "average": 33614.79523,
            "count": 2652129,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11462.36329,
            "variance": 131385772.1
          },
          {
            "average": 1.001475418,
            "count": 2652129,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03850053845,
            "variance": 0.001482291461
          },
          {
            "average": 1.002949329,
            "count": 2652129,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05447732752,
            "variance": 0.002967779214
          },
          {
            "average": 0.5015766578,
            "count": 2652129,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999976084,
            "variance": 0.2499976084
          },
          {
            "average": 0.0004219251778,
            "count": 2652129,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02053648743,
            "variance": 0.000421747316
          },
          {
            "average": 1.324015536,
            "count": 2652129,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4873884601,
            "variance": 0.237547511
          },
          {
            "average": 0.3519822621,
            "count": 2652129,
            "maximum": 16.44000053,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38054282,
            "variance": 107.7556692
          },
          {
            "average": 0.5005435256,
            "count": 2652129,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999997988,
            "variance": 0.2499997988
          },
          {
            "average": 408.0641194,
            "count": 2652129,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9236302284,
            "variance": 0.8530927989
          },
          {
            "average": 220416220.4,
            "count": 2652129,
            "maximum": 220417268.8,
            "minimum": 220415005.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 527.8714547,
            "variance": 278648.2727
          },
          {
            "average": 0.5005435256,
            "count": 2652129,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999997988,
            "variance": 0.2499997988
          },
          {
            "average": 0,
            "count": 2652129,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2652129,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2652129,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2328849766,
            "count": 2652129,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4226696483,
            "variance": 0.1786496316
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99699.08745,
          2368985.729,
          3.654841291,
          -99203.22745,
          2369459.209,
          18.41484129
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99699.0874472129,
                2368985.7292263657,
                3.654841291036399
              ],
              [
                -99699.0874472129,
                2369459.209226366,
                3.654841291036399
              ],
              [
                -99203.22744721292,
                2369459.209226366,
                18.4148412910364
              ],
              [
                -99203.22744721292,
                2368985.7292263657,
                18.4148412910364
              ],
              [
                -99699.0874472129,
                2368985.7292263657,
                3.654841291036399
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:47:48+00:00",
        "end_time": "2018-09-08T04:10:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2197.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2197.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2197.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2197.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7181055,
            71.30040114,
            3.654841291,
            -156.7040765,
            71.30493364,
            18.41484129
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71757761242543,
                  71.30040114098135,
                  3.654841291036399
                ],
                [
                  -156.7181055418682,
                  71.30474768932658,
                  3.654841291036399
                ],
                [
                  -156.70460184416226,
                  71.30493363990671,
                  18.4148412910364
                ],
                [
                  -156.7040765316866,
                  71.3005870499991,
                  18.4148412910364
                ],
                [
                  -156.71757761242543,
                  71.30040114098135,
                  3.654841291036399
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2197.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2197.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:47:48Z",
            "pc:count": 2652129,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99449.60412,
                "count": 2652129,
                "maximum": -99203.22745,
                "minimum": -99699.08745,
                "name": "X",
                "position": 0,
                "stddev": 137.0790867,
                "variance": 18790.67601
              },
              {
                "average": 2369214.656,
                "count": 2652129,
                "maximum": 2369459.209,
                "minimum": 2368985.729,
                "name": "Y",
                "position": 1,
                "stddev": 129.6162656,
                "variance": 16800.3763
              },
              {
                "average": 6.393289259,
                "count": 2652129,
                "maximum": 18.41484129,
                "minimum": 3.654841291,
                "name": "Z",
                "position": 2,
                "stddev": 0.2474680879,
                "variance": 0.06124045455
              },
              {
                "average": 33614.79523,
                "count": 2652129,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11462.36329,
                "variance": 131385772.1
              },
              {
                "average": 1.001475418,
                "count": 2652129,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03850053845,
                "variance": 0.001482291461
              },
              {
                "average": 1.002949329,
                "count": 2652129,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05447732752,
                "variance": 0.002967779214
              },
              {
                "average": 0.5015766578,
                "count": 2652129,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999976084,
                "variance": 0.2499976084
              },
              {
                "average": 0.0004219251778,
                "count": 2652129,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02053648743,
                "variance": 0.000421747316
              },
              {
                "average": 1.324015536,
                "count": 2652129,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4873884601,
                "variance": 0.237547511
              },
              {
                "average": 0.3519822621,
                "count": 2652129,
                "maximum": 16.44000053,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38054282,
                "variance": 107.7556692
              },
              {
                "average": 0.5005435256,
                "count": 2652129,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999997988,
                "variance": 0.2499997988
              },
              {
                "average": 408.0641194,
                "count": 2652129,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9236302284,
                "variance": 0.8530927989
              },
              {
                "average": 220416220.4,
                "count": 2652129,
                "maximum": 220417268.8,
                "minimum": 220415005.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 527.8714547,
                "variance": 278648.2727
              },
              {
                "average": 0.5005435256,
                "count": 2652129,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999997988,
                "variance": 0.2499997988
              },
              {
                "average": 0,
                "count": 2652129,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2652129,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2652129,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2328849766,
                "count": 2652129,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4226696483,
                "variance": 0.1786496316
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99699.08745,
              2368985.729,
              3.654841291,
              -99203.22745,
              2369459.209,
              18.41484129
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99699.0874472129,
                    2368985.7292263657,
                    3.654841291036399
                  ],
                  [
                    -99699.0874472129,
                    2369459.209226366,
                    3.654841291036399
                  ],
                  [
                    -99203.22744721292,
                    2369459.209226366,
                    18.4148412910364
                  ],
                  [
                    -99203.22744721292,
                    2368985.7292263657,
                    18.4148412910364
                  ],
                  [
                    -99699.0874472129,
                    2368985.7292263657,
                    3.654841291036399
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:47:48+00:00",
            "end_time": "2018-09-08T04:10:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2303.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.63923668595692,
              71.32444394331753,
              -14.905402235691117
            ],
            [
              -156.63975006428257,
              71.32879232535345,
              -14.905402235691117
            ],
            [
              -156.62622575535994,
              71.32897300658725,
              31.254597764308887
            ],
            [
              -156.62571500174147,
              71.32462458409348,
              31.254597764308887
            ],
            [
              -156.63923668595692,
              71.32444394331753,
              -14.905402235691117
            ]
          ]
        ]
      },
      "bbox": [
        -156.6397501,
        71.32444394,
        -14.90540224,
        -156.625715,
        71.32897301,
        31.25459776
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:54Z",
        "pc:count": 3060852,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96473.93967,
            "count": 3060852,
            "maximum": -96226.5276,
            "minimum": -96722.5876,
            "name": "X",
            "position": 0,
            "stddev": 135.8097706,
            "variance": 18444.29378
          },
          {
            "average": 2371716.511,
            "count": 3060852,
            "maximum": 2371958.002,
            "minimum": 2371484.422,
            "name": "Y",
            "position": 1,
            "stddev": 128.0237403,
            "variance": 16390.07808
          },
          {
            "average": 3.775603141,
            "count": 3060852,
            "maximum": 31.25459776,
            "minimum": -14.90540224,
            "name": "Z",
            "position": 2,
            "stddev": 1.25984198,
            "variance": 1.587201813
          },
          {
            "average": 40418.95612,
            "count": 3060852,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11936.87927,
            "variance": 142489086.8
          },
          {
            "average": 1.002370255,
            "count": 3060852,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04997933579,
            "variance": 0.002497934006
          },
          {
            "average": 1.004735283,
            "count": 3060852,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07150349838,
            "variance": 0.005112750281
          },
          {
            "average": 0.4992681776,
            "count": 3060852,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999995461,
            "variance": 0.2499995461
          },
          {
            "average": 0.0004413803738,
            "count": 3060852,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02100442099,
            "variance": 0.0004411857013
          },
          {
            "average": 1.460704078,
            "count": 3060852,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9761267451,
            "variance": 0.9528234226
          },
          {
            "average": 0.06989681719,
            "count": 3060852,
            "maximum": 16.3560009,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.34138882,
            "variance": 106.9443228
          },
          {
            "average": 0.4799013477,
            "count": 3060852,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995959625,
            "variance": 0.2495961257
          },
          {
            "average": 407.7931893,
            "count": 3060852,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9268298063,
            "variance": 0.8590134899
          },
          {
            "average": 220416051.2,
            "count": 3060852,
            "maximum": 220417334.5,
            "minimum": 220415070,
            "name": "GpsTime",
            "position": 12,
            "stddev": 527.6249283,
            "variance": 278388.065
          },
          {
            "average": 0.4799013477,
            "count": 3060852,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995959625,
            "variance": 0.2495961257
          },
          {
            "average": 0,
            "count": 3060852,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3060852,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3060852,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2229696176,
            "count": 3060852,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4162381816,
            "variance": 0.1732542238
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96722.5876,
          2371484.422,
          -14.90540224,
          -96226.5276,
          2371958.002,
          31.25459776
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96722.58759800575,
                2371484.4217716763,
                -14.905402235691117
              ],
              [
                -96722.58759800575,
                2371958.0017716764,
                -14.905402235691117
              ],
              [
                -96226.52759800575,
                2371958.0017716764,
                31.254597764308887
              ],
              [
                -96226.52759800575,
                2371484.4217716763,
                31.254597764308887
              ],
              [
                -96722.58759800575,
                2371484.4217716763,
                -14.905402235691117
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:54+00:00",
        "end_time": "2018-09-08T04:11:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2303.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2303.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2303.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2303.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6397501,
            71.32444394,
            -14.90540224,
            -156.625715,
            71.32897301,
            31.25459776
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.63923668595692,
                  71.32444394331753,
                  -14.905402235691117
                ],
                [
                  -156.63975006428257,
                  71.32879232535345,
                  -14.905402235691117
                ],
                [
                  -156.62622575535994,
                  71.32897300658725,
                  31.254597764308887
                ],
                [
                  -156.62571500174147,
                  71.32462458409348,
                  31.254597764308887
                ],
                [
                  -156.63923668595692,
                  71.32444394331753,
                  -14.905402235691117
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2303.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2303.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:54Z",
            "pc:count": 3060852,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96473.93967,
                "count": 3060852,
                "maximum": -96226.5276,
                "minimum": -96722.5876,
                "name": "X",
                "position": 0,
                "stddev": 135.8097706,
                "variance": 18444.29378
              },
              {
                "average": 2371716.511,
                "count": 3060852,
                "maximum": 2371958.002,
                "minimum": 2371484.422,
                "name": "Y",
                "position": 1,
                "stddev": 128.0237403,
                "variance": 16390.07808
              },
              {
                "average": 3.775603141,
                "count": 3060852,
                "maximum": 31.25459776,
                "minimum": -14.90540224,
                "name": "Z",
                "position": 2,
                "stddev": 1.25984198,
                "variance": 1.587201813
              },
              {
                "average": 40418.95612,
                "count": 3060852,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11936.87927,
                "variance": 142489086.8
              },
              {
                "average": 1.002370255,
                "count": 3060852,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04997933579,
                "variance": 0.002497934006
              },
              {
                "average": 1.004735283,
                "count": 3060852,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07150349838,
                "variance": 0.005112750281
              },
              {
                "average": 0.4992681776,
                "count": 3060852,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999995461,
                "variance": 0.2499995461
              },
              {
                "average": 0.0004413803738,
                "count": 3060852,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02100442099,
                "variance": 0.0004411857013
              },
              {
                "average": 1.460704078,
                "count": 3060852,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9761267451,
                "variance": 0.9528234226
              },
              {
                "average": 0.06989681719,
                "count": 3060852,
                "maximum": 16.3560009,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.34138882,
                "variance": 106.9443228
              },
              {
                "average": 0.4799013477,
                "count": 3060852,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995959625,
                "variance": 0.2495961257
              },
              {
                "average": 407.7931893,
                "count": 3060852,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9268298063,
                "variance": 0.8590134899
              },
              {
                "average": 220416051.2,
                "count": 3060852,
                "maximum": 220417334.5,
                "minimum": 220415070,
                "name": "GpsTime",
                "position": 12,
                "stddev": 527.6249283,
                "variance": 278388.065
              },
              {
                "average": 0.4799013477,
                "count": 3060852,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995959625,
                "variance": 0.2495961257
              },
              {
                "average": 0,
                "count": 3060852,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3060852,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3060852,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2229696176,
                "count": 3060852,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4162381816,
                "variance": 0.1732542238
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96722.5876,
              2371484.422,
              -14.90540224,
              -96226.5276,
              2371958.002,
              31.25459776
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96722.58759800575,
                    2371484.4217716763,
                    -14.905402235691117
                  ],
                  [
                    -96722.58759800575,
                    2371958.0017716764,
                    -14.905402235691117
                  ],
                  [
                    -96226.52759800575,
                    2371958.0017716764,
                    31.254597764308887
                  ],
                  [
                    -96226.52759800575,
                    2371484.4217716763,
                    31.254597764308887
                  ],
                  [
                    -96722.58759800575,
                    2371484.4217716763,
                    -14.905402235691117
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:54+00:00",
            "end_time": "2018-09-08T04:11:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2220.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67898923897752,
              71.30423228942888,
              4.53916414030722
            ],
            [
              -156.6795099411712,
              71.30858052203918,
              4.53916414030722
            ],
            [
              -156.6660036136013,
              71.30876383175202,
              15.99916414030722
            ],
            [
              -156.66548553040235,
              71.30441555814464,
              15.99916414030722
            ],
            [
              -156.67898923897752,
              71.30423228942888,
              4.53916414030722
            ]
          ]
        ]
      },
      "bbox": [
        -156.6795099,
        71.30423229,
        4.53916414,
        -156.6654855,
        71.30876383,
        15.99916414
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:44Z",
        "pc:count": 3204924,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98011.19578,
            "count": 3204924,
            "maximum": -97771.50249,
            "minimum": -98267.36249,
            "name": "X",
            "position": 0,
            "stddev": 134.1231427,
            "variance": 17989.01741
          },
          {
            "average": 2369583.408,
            "count": 3204924,
            "maximum": 2369818.498,
            "minimum": 2369344.858,
            "name": "Y",
            "position": 1,
            "stddev": 128.7106389,
            "variance": 16566.42856
          },
          {
            "average": 5.841565015,
            "count": 3204924,
            "maximum": 15.99916414,
            "minimum": 4.53916414,
            "name": "Z",
            "position": 2,
            "stddev": 0.6074436962,
            "variance": 0.368987844
          },
          {
            "average": 42781.34934,
            "count": 3204924,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10058.06728,
            "variance": 101164717.4
          },
          {
            "average": 1.000342286,
            "count": 3204924,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01906268904,
            "variance": 0.0003633861133
          },
          {
            "average": 1.0006905,
            "count": 3204924,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02743041038,
            "variance": 0.0007524274135
          },
          {
            "average": 0.4989375723,
            "count": 3204924,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999989493,
            "variance": 0.2499989493
          },
          {
            "average": 0.0004149864396,
            "count": 3204924,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02036699181,
            "variance": 0.0004148143553
          },
          {
            "average": 1.317298008,
            "count": 3204924,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4702187244,
            "variance": 0.2211056488
          },
          {
            "average": -0.1438070931,
            "count": 3204924,
            "maximum": 16.30800056,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.16560602,
            "variance": 103.3395458
          },
          {
            "average": 0.4701478101,
            "count": 3204924,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499108129,
            "variance": 0.2491089245
          },
          {
            "average": 409.7414737,
            "count": 3204924,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9187253352,
            "variance": 0.8440562415
          },
          {
            "average": 220417164.2,
            "count": 3204924,
            "maximum": 220418404.8,
            "minimum": 220416149,
            "name": "GpsTime",
            "position": 12,
            "stddev": 519.9138014,
            "variance": 270310.3609
          },
          {
            "average": 0.4701478101,
            "count": 3204924,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499108129,
            "variance": 0.2491089245
          },
          {
            "average": 0,
            "count": 3204924,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3204924,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3204924,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2115781841,
            "count": 3204924,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4084273597,
            "variance": 0.1668129081
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98267.36249,
          2369344.858,
          4.53916414,
          -97771.50249,
          2369818.498,
          15.99916414
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98267.36249059698,
                2369344.8581022494,
                4.53916414030722
              ],
              [
                -98267.36249059698,
                2369818.498102249,
                4.53916414030722
              ],
              [
                -97771.50249059699,
                2369818.498102249,
                15.99916414030722
              ],
              [
                -97771.50249059699,
                2369344.8581022494,
                15.99916414030722
              ],
              [
                -98267.36249059698,
                2369344.8581022494,
                4.53916414030722
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:44+00:00",
        "end_time": "2018-09-08T04:29:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2220.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2220.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2220.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2220.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6795099,
            71.30423229,
            4.53916414,
            -156.6654855,
            71.30876383,
            15.99916414
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67898923897752,
                  71.30423228942888,
                  4.53916414030722
                ],
                [
                  -156.6795099411712,
                  71.30858052203918,
                  4.53916414030722
                ],
                [
                  -156.6660036136013,
                  71.30876383175202,
                  15.99916414030722
                ],
                [
                  -156.66548553040235,
                  71.30441555814464,
                  15.99916414030722
                ],
                [
                  -156.67898923897752,
                  71.30423228942888,
                  4.53916414030722
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2220.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2220.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:44Z",
            "pc:count": 3204924,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98011.19578,
                "count": 3204924,
                "maximum": -97771.50249,
                "minimum": -98267.36249,
                "name": "X",
                "position": 0,
                "stddev": 134.1231427,
                "variance": 17989.01741
              },
              {
                "average": 2369583.408,
                "count": 3204924,
                "maximum": 2369818.498,
                "minimum": 2369344.858,
                "name": "Y",
                "position": 1,
                "stddev": 128.7106389,
                "variance": 16566.42856
              },
              {
                "average": 5.841565015,
                "count": 3204924,
                "maximum": 15.99916414,
                "minimum": 4.53916414,
                "name": "Z",
                "position": 2,
                "stddev": 0.6074436962,
                "variance": 0.368987844
              },
              {
                "average": 42781.34934,
                "count": 3204924,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10058.06728,
                "variance": 101164717.4
              },
              {
                "average": 1.000342286,
                "count": 3204924,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01906268904,
                "variance": 0.0003633861133
              },
              {
                "average": 1.0006905,
                "count": 3204924,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02743041038,
                "variance": 0.0007524274135
              },
              {
                "average": 0.4989375723,
                "count": 3204924,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999989493,
                "variance": 0.2499989493
              },
              {
                "average": 0.0004149864396,
                "count": 3204924,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02036699181,
                "variance": 0.0004148143553
              },
              {
                "average": 1.317298008,
                "count": 3204924,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4702187244,
                "variance": 0.2211056488
              },
              {
                "average": -0.1438070931,
                "count": 3204924,
                "maximum": 16.30800056,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.16560602,
                "variance": 103.3395458
              },
              {
                "average": 0.4701478101,
                "count": 3204924,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499108129,
                "variance": 0.2491089245
              },
              {
                "average": 409.7414737,
                "count": 3204924,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9187253352,
                "variance": 0.8440562415
              },
              {
                "average": 220417164.2,
                "count": 3204924,
                "maximum": 220418404.8,
                "minimum": 220416149,
                "name": "GpsTime",
                "position": 12,
                "stddev": 519.9138014,
                "variance": 270310.3609
              },
              {
                "average": 0.4701478101,
                "count": 3204924,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499108129,
                "variance": 0.2491089245
              },
              {
                "average": 0,
                "count": 3204924,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3204924,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3204924,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2115781841,
                "count": 3204924,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4084273597,
                "variance": 0.1668129081
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98267.36249,
              2369344.858,
              4.53916414,
              -97771.50249,
              2369818.498,
              15.99916414
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98267.36249059698,
                    2369344.8581022494,
                    4.53916414030722
                  ],
                  [
                    -98267.36249059698,
                    2369818.498102249,
                    4.53916414030722
                  ],
                  [
                    -97771.50249059699,
                    2369818.498102249,
                    15.99916414030722
                  ],
                  [
                    -97771.50249059699,
                    2369344.8581022494,
                    15.99916414030722
                  ],
                  [
                    -98267.36249059698,
                    2369344.8581022494,
                    4.53916414030722
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:44+00:00",
            "end_time": "2018-09-08T04:29:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2393.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.54456369536615,
              71.3606782554468,
              0.864228137447717
            ],
            [
              -156.54477093050232,
              71.36249663024574,
              0.864228137447717
            ],
            [
              -156.53406422162388,
              71.36263440467819,
              1.564228137447718
            ],
            [
              -156.53385785669906,
              71.36081601695153,
              1.564228137447718
            ],
            [
              -156.54456369536615,
              71.3606782554468,
              0.864228137447717
            ]
          ]
        ]
      },
      "bbox": [
        -156.5447709,
        71.36067826,
        0.8642281374,
        -156.5338579,
        71.3626344,
        1.564228137
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:26Z",
        "pc:count": 328824,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92846.66845,
            "count": 328824,
            "maximum": -92711.61754,
            "minimum": -93103.71754,
            "name": "X",
            "position": 0,
            "stddev": 90.7129577,
            "variance": 8228.840695
          },
          {
            "average": 2375362.888,
            "count": 328824,
            "maximum": 2375486.811,
            "minimum": 2375288.831,
            "name": "Y",
            "position": 1,
            "stddev": 44.61615575,
            "variance": 1990.601354
          },
          {
            "average": 1.20262865,
            "count": 328824,
            "maximum": 1.564228137,
            "minimum": 0.8642281374,
            "name": "Z",
            "position": 2,
            "stddev": 0.07414495583,
            "variance": 0.005497474475
          },
          {
            "average": 15469.85641,
            "count": 328824,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11423.77862,
            "variance": 130502718.1
          },
          {
            "average": 1,
            "count": 328824,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 328824,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5087371968,
            "count": 328824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999244157,
            "variance": 0.2499244214
          },
          {
            "average": 0.0005960635477,
            "count": 328824,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02440717246,
            "variance": 0.0005957100676
          },
          {
            "average": 7.33593655,
            "count": 328824,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.777040103,
            "variance": 7.711951734
          },
          {
            "average": -2.541822422,
            "count": 328824,
            "maximum": 16.34399986,
            "minimum": -14.10599995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.29704014,
            "variance": 53.2467948
          },
          {
            "average": 0.4874644187,
            "count": 328824,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998435945,
            "variance": 0.249843619
          },
          {
            "average": 406.1958069,
            "count": 328824,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.644656164,
            "variance": 0.4155815698
          },
          {
            "average": 220415165.4,
            "count": 328824,
            "maximum": 220416286,
            "minimum": 220414354.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 343.9334084,
            "variance": 118290.1894
          },
          {
            "average": 0.4874644187,
            "count": 328824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998435945,
            "variance": 0.249843619
          },
          {
            "average": 0,
            "count": 328824,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 328824,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 328824,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0825061431,
            "count": 328824,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2751347119,
            "variance": 0.07569910967
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93103.71754,
          2375288.831,
          0.8642281374,
          -92711.61754,
          2375486.811,
          1.564228137
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93103.71753981251,
                2375288.8313157447,
                0.864228137447717
              ],
              [
                -93103.71753981251,
                2375486.811315745,
                0.864228137447717
              ],
              [
                -92711.6175398125,
                2375486.811315745,
                1.564228137447718
              ],
              [
                -92711.6175398125,
                2375288.8313157447,
                1.564228137447718
              ],
              [
                -93103.71753981251,
                2375288.8313157447,
                0.864228137447717
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:26+00:00",
        "end_time": "2018-09-08T03:59:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2393.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2393.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2393.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2393.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5447709,
            71.36067826,
            0.8642281374,
            -156.5338579,
            71.3626344,
            1.564228137
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.54456369536615,
                  71.3606782554468,
                  0.864228137447717
                ],
                [
                  -156.54477093050232,
                  71.36249663024574,
                  0.864228137447717
                ],
                [
                  -156.53406422162388,
                  71.36263440467819,
                  1.564228137447718
                ],
                [
                  -156.53385785669906,
                  71.36081601695153,
                  1.564228137447718
                ],
                [
                  -156.54456369536615,
                  71.3606782554468,
                  0.864228137447717
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2393.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2393.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:26Z",
            "pc:count": 328824,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92846.66845,
                "count": 328824,
                "maximum": -92711.61754,
                "minimum": -93103.71754,
                "name": "X",
                "position": 0,
                "stddev": 90.7129577,
                "variance": 8228.840695
              },
              {
                "average": 2375362.888,
                "count": 328824,
                "maximum": 2375486.811,
                "minimum": 2375288.831,
                "name": "Y",
                "position": 1,
                "stddev": 44.61615575,
                "variance": 1990.601354
              },
              {
                "average": 1.20262865,
                "count": 328824,
                "maximum": 1.564228137,
                "minimum": 0.8642281374,
                "name": "Z",
                "position": 2,
                "stddev": 0.07414495583,
                "variance": 0.005497474475
              },
              {
                "average": 15469.85641,
                "count": 328824,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11423.77862,
                "variance": 130502718.1
              },
              {
                "average": 1,
                "count": 328824,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 328824,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5087371968,
                "count": 328824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999244157,
                "variance": 0.2499244214
              },
              {
                "average": 0.0005960635477,
                "count": 328824,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02440717246,
                "variance": 0.0005957100676
              },
              {
                "average": 7.33593655,
                "count": 328824,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.777040103,
                "variance": 7.711951734
              },
              {
                "average": -2.541822422,
                "count": 328824,
                "maximum": 16.34399986,
                "minimum": -14.10599995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.29704014,
                "variance": 53.2467948
              },
              {
                "average": 0.4874644187,
                "count": 328824,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998435945,
                "variance": 0.249843619
              },
              {
                "average": 406.1958069,
                "count": 328824,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.644656164,
                "variance": 0.4155815698
              },
              {
                "average": 220415165.4,
                "count": 328824,
                "maximum": 220416286,
                "minimum": 220414354.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 343.9334084,
                "variance": 118290.1894
              },
              {
                "average": 0.4874644187,
                "count": 328824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998435945,
                "variance": 0.249843619
              },
              {
                "average": 0,
                "count": 328824,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 328824,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 328824,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0825061431,
                "count": 328824,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2751347119,
                "variance": 0.07569910967
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93103.71754,
              2375288.831,
              0.8642281374,
              -92711.61754,
              2375486.811,
              1.564228137
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93103.71753981251,
                    2375288.8313157447,
                    0.864228137447717
                  ],
                  [
                    -93103.71753981251,
                    2375486.811315745,
                    0.864228137447717
                  ],
                  [
                    -92711.6175398125,
                    2375486.811315745,
                    1.564228137447718
                  ],
                  [
                    -92711.6175398125,
                    2375288.8313157447,
                    1.564228137447718
                  ],
                  [
                    -93103.71753981251,
                    2375288.8313157447,
                    0.864228137447717
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:26+00:00",
            "end_time": "2018-09-08T03:59:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2284.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70343974239012,
              71.3207975993716,
              -15.388057802993881
            ],
            [
              -156.7039655168095,
              71.32514570449919,
              -15.388057802993881
            ],
            [
              -156.69044611684217,
              71.32533075567649,
              16.45194219700612
            ],
            [
              -156.68992296544386,
              71.32098260912392,
              16.45194219700612
            ],
            [
              -156.70343974239012,
              71.3207975993716,
              -15.388057802993881
            ]
          ]
        ]
      },
      "bbox": [
        -156.7039655,
        71.3207976,
        -15.3880578,
        -156.689923,
        71.32533076,
        16.4519422
      ],
      "properties": {
        "datetime": "2018-09-08T04:10:45Z",
        "pc:count": 2146732,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98840.59377,
            "count": 2146732,
            "maximum": -98594.38208,
            "minimum": -99090.36208,
            "name": "X",
            "position": 0,
            "stddev": 136.4479845,
            "variance": 18618.05247
          },
          {
            "average": 2371414.192,
            "count": 2146732,
            "maximum": 2371656.155,
            "minimum": 2371182.575,
            "name": "Y",
            "position": 1,
            "stddev": 125.0957181,
            "variance": 15648.93868
          },
          {
            "average": 2.190132497,
            "count": 2146732,
            "maximum": 16.4519422,
            "minimum": -15.3880578,
            "name": "Z",
            "position": 2,
            "stddev": 1.277448104,
            "variance": 1.631873659
          },
          {
            "average": 17250.34809,
            "count": 2146732,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9119.688747,
            "variance": 83168722.83
          },
          {
            "average": 1.004813363,
            "count": 2146732,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07190486371,
            "variance": 0.005170309425
          },
          {
            "average": 1.00961508,
            "count": 2146732,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1032616735,
            "variance": 0.01066297321
          },
          {
            "average": 0.5044160147,
            "count": 2146732,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999806149,
            "variance": 0.2499806153
          },
          {
            "average": 0.0004877180757,
            "count": 2146732,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02207895907,
            "variance": 0.0004874804338
          },
          {
            "average": 4.573876478,
            "count": 2146732,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.7291365,
            "variance": 13.90645903
          },
          {
            "average": 0.1033788565,
            "count": 2146732,
            "maximum": 16.48200035,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.250010726,
            "variance": 85.56269844
          },
          {
            "average": 0.5673269882,
            "count": 2146732,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4954464562,
            "variance": 0.245467191
          },
          {
            "average": 404.435236,
            "count": 2146732,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8740971312,
            "variance": 0.7640457948
          },
          {
            "average": 220414161.4,
            "count": 2146732,
            "maximum": 220415045.3,
            "minimum": 220413366.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 488.8467999,
            "variance": 238971.1937
          },
          {
            "average": 0.5673269882,
            "count": 2146732,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4954464562,
            "variance": 0.245467191
          },
          {
            "average": 0,
            "count": 2146732,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2146732,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2146732,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.198352193,
            "count": 2146732,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3987589179,
            "variance": 0.1590086746
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99090.36208,
          2371182.575,
          -15.3880578,
          -98594.38208,
          2371656.155,
          16.4519422
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99090.36207779394,
                2371182.575489333,
                -15.388057802993881
              ],
              [
                -99090.36207779394,
                2371656.155489333,
                -15.388057802993881
              ],
              [
                -98594.38207779393,
                2371656.155489333,
                16.45194219700612
              ],
              [
                -98594.38207779393,
                2371182.575489333,
                16.45194219700612
              ],
              [
                -99090.36207779394,
                2371182.575489333,
                -15.388057802993881
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:10:45+00:00",
        "end_time": "2018-09-08T03:42:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2284.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2284.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2284.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2284.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7039655,
            71.3207976,
            -15.3880578,
            -156.689923,
            71.32533076,
            16.4519422
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70343974239012,
                  71.3207975993716,
                  -15.388057802993881
                ],
                [
                  -156.7039655168095,
                  71.32514570449919,
                  -15.388057802993881
                ],
                [
                  -156.69044611684217,
                  71.32533075567649,
                  16.45194219700612
                ],
                [
                  -156.68992296544386,
                  71.32098260912392,
                  16.45194219700612
                ],
                [
                  -156.70343974239012,
                  71.3207975993716,
                  -15.388057802993881
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2284.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2284.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:10:45Z",
            "pc:count": 2146732,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98840.59377,
                "count": 2146732,
                "maximum": -98594.38208,
                "minimum": -99090.36208,
                "name": "X",
                "position": 0,
                "stddev": 136.4479845,
                "variance": 18618.05247
              },
              {
                "average": 2371414.192,
                "count": 2146732,
                "maximum": 2371656.155,
                "minimum": 2371182.575,
                "name": "Y",
                "position": 1,
                "stddev": 125.0957181,
                "variance": 15648.93868
              },
              {
                "average": 2.190132497,
                "count": 2146732,
                "maximum": 16.4519422,
                "minimum": -15.3880578,
                "name": "Z",
                "position": 2,
                "stddev": 1.277448104,
                "variance": 1.631873659
              },
              {
                "average": 17250.34809,
                "count": 2146732,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9119.688747,
                "variance": 83168722.83
              },
              {
                "average": 1.004813363,
                "count": 2146732,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07190486371,
                "variance": 0.005170309425
              },
              {
                "average": 1.00961508,
                "count": 2146732,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1032616735,
                "variance": 0.01066297321
              },
              {
                "average": 0.5044160147,
                "count": 2146732,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999806149,
                "variance": 0.2499806153
              },
              {
                "average": 0.0004877180757,
                "count": 2146732,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02207895907,
                "variance": 0.0004874804338
              },
              {
                "average": 4.573876478,
                "count": 2146732,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.7291365,
                "variance": 13.90645903
              },
              {
                "average": 0.1033788565,
                "count": 2146732,
                "maximum": 16.48200035,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.250010726,
                "variance": 85.56269844
              },
              {
                "average": 0.5673269882,
                "count": 2146732,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4954464562,
                "variance": 0.245467191
              },
              {
                "average": 404.435236,
                "count": 2146732,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8740971312,
                "variance": 0.7640457948
              },
              {
                "average": 220414161.4,
                "count": 2146732,
                "maximum": 220415045.3,
                "minimum": 220413366.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 488.8467999,
                "variance": 238971.1937
              },
              {
                "average": 0.5673269882,
                "count": 2146732,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4954464562,
                "variance": 0.245467191
              },
              {
                "average": 0,
                "count": 2146732,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2146732,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2146732,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.198352193,
                "count": 2146732,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3987589179,
                "variance": 0.1590086746
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99090.36208,
              2371182.575,
              -15.3880578,
              -98594.38208,
              2371656.155,
              16.4519422
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99090.36207779394,
                    2371182.575489333,
                    -15.388057802993881
                  ],
                  [
                    -99090.36207779394,
                    2371656.155489333,
                    -15.388057802993881
                  ],
                  [
                    -98594.38207779393,
                    2371656.155489333,
                    16.45194219700612
                  ],
                  [
                    -98594.38207779393,
                    2371182.575489333,
                    16.45194219700612
                  ],
                  [
                    -99090.36207779394,
                    2371182.575489333,
                    -15.388057802993881
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:10:45+00:00",
            "end_time": "2018-09-08T03:42:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2406.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.50823397446916,
              71.36444415708306,
              0.85974279584405
            ],
            [
              -156.50872263304336,
              71.36879295610247,
              0.85974279584405
            ],
            [
              -156.49516760293997,
              71.36896476536992,
              5.75974279584405
            ],
            [
              -156.49468157968292,
              71.36461592778642,
              5.75974279584405
            ],
            [
              -156.50823397446916,
              71.36444415708306,
              0.85974279584405
            ]
          ]
        ]
      },
      "bbox": [
        -156.5087226,
        71.36444416,
        0.8597427958,
        -156.4946816,
        71.36896477,
        5.759742796
      ],
      "properties": {
        "datetime": "2018-09-08T04:36:54Z",
        "pc:count": 2450345,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91515.13033,
            "count": 2450345,
            "maximum": -91263.34573,
            "minimum": -91759.60573,
            "name": "X",
            "position": 0,
            "stddev": 129.2207258,
            "variance": 16697.99596
          },
          {
            "average": 2375881.868,
            "count": 2450345,
            "maximum": 2376121.149,
            "minimum": 2375647.689,
            "name": "Y",
            "position": 1,
            "stddev": 128.4773791,
            "variance": 16506.43693
          },
          {
            "average": 2.458259584,
            "count": 2450345,
            "maximum": 5.759742796,
            "minimum": 0.8597427958,
            "name": "Z",
            "position": 2,
            "stddev": 1.317665619,
            "variance": 1.736242682
          },
          {
            "average": 16958.9796,
            "count": 2450345,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 7514.473524,
            "variance": 56467312.34
          },
          {
            "average": 1,
            "count": 2450345,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2450345,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4981131228,
            "count": 2450345,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999965417,
            "variance": 0.2499965417
          },
          {
            "average": 0.0005505347206,
            "count": 2450345,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02345702148,
            "variance": 0.0005502318567
          },
          {
            "average": 3.16434951,
            "count": 2450345,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.230494832,
            "variance": 10.43609686
          },
          {
            "average": -0.3933305254,
            "count": 2450345,
            "maximum": 16.29000092,
            "minimum": -15.95400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.528397285,
            "variance": 90.79035482
          },
          {
            "average": 0.4400608894,
            "count": 2450345,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4963944033,
            "variance": 0.2464074036
          },
          {
            "average": 407.3155503,
            "count": 2450345,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8952103045,
            "variance": 0.8014014892
          },
          {
            "average": 220415792.1,
            "count": 2450345,
            "maximum": 220416614.4,
            "minimum": 220415178.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 513.83906,
            "variance": 264030.5796
          },
          {
            "average": 0.4400608894,
            "count": 2450345,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4963944033,
            "variance": 0.2464074036
          },
          {
            "average": 0,
            "count": 2450345,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2450345,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2450345,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2109637622,
            "count": 2450345,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4079927955,
            "variance": 0.1664581212
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91759.60573,
          2375647.689,
          0.8597427958,
          -91263.34573,
          2376121.149,
          5.759742796
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91759.60572790878,
                2375647.6888353936,
                0.85974279584405
              ],
              [
                -91759.60572790878,
                2376121.1488353936,
                0.85974279584405
              ],
              [
                -91263.34572790877,
                2376121.1488353936,
                5.75974279584405
              ],
              [
                -91263.34572790877,
                2375647.6888353936,
                5.75974279584405
              ],
              [
                -91759.60572790878,
                2375647.6888353936,
                0.85974279584405
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:36:54+00:00",
        "end_time": "2018-09-08T04:12:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2406.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2406.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2406.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2406.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5087226,
            71.36444416,
            0.8597427958,
            -156.4946816,
            71.36896477,
            5.759742796
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.50823397446916,
                  71.36444415708306,
                  0.85974279584405
                ],
                [
                  -156.50872263304336,
                  71.36879295610247,
                  0.85974279584405
                ],
                [
                  -156.49516760293997,
                  71.36896476536992,
                  5.75974279584405
                ],
                [
                  -156.49468157968292,
                  71.36461592778642,
                  5.75974279584405
                ],
                [
                  -156.50823397446916,
                  71.36444415708306,
                  0.85974279584405
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2406.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2406.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:36:54Z",
            "pc:count": 2450345,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91515.13033,
                "count": 2450345,
                "maximum": -91263.34573,
                "minimum": -91759.60573,
                "name": "X",
                "position": 0,
                "stddev": 129.2207258,
                "variance": 16697.99596
              },
              {
                "average": 2375881.868,
                "count": 2450345,
                "maximum": 2376121.149,
                "minimum": 2375647.689,
                "name": "Y",
                "position": 1,
                "stddev": 128.4773791,
                "variance": 16506.43693
              },
              {
                "average": 2.458259584,
                "count": 2450345,
                "maximum": 5.759742796,
                "minimum": 0.8597427958,
                "name": "Z",
                "position": 2,
                "stddev": 1.317665619,
                "variance": 1.736242682
              },
              {
                "average": 16958.9796,
                "count": 2450345,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 7514.473524,
                "variance": 56467312.34
              },
              {
                "average": 1,
                "count": 2450345,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2450345,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4981131228,
                "count": 2450345,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999965417,
                "variance": 0.2499965417
              },
              {
                "average": 0.0005505347206,
                "count": 2450345,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02345702148,
                "variance": 0.0005502318567
              },
              {
                "average": 3.16434951,
                "count": 2450345,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.230494832,
                "variance": 10.43609686
              },
              {
                "average": -0.3933305254,
                "count": 2450345,
                "maximum": 16.29000092,
                "minimum": -15.95400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.528397285,
                "variance": 90.79035482
              },
              {
                "average": 0.4400608894,
                "count": 2450345,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4963944033,
                "variance": 0.2464074036
              },
              {
                "average": 407.3155503,
                "count": 2450345,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8952103045,
                "variance": 0.8014014892
              },
              {
                "average": 220415792.1,
                "count": 2450345,
                "maximum": 220416614.4,
                "minimum": 220415178.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 513.83906,
                "variance": 264030.5796
              },
              {
                "average": 0.4400608894,
                "count": 2450345,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4963944033,
                "variance": 0.2464074036
              },
              {
                "average": 0,
                "count": 2450345,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2450345,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2450345,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2109637622,
                "count": 2450345,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4079927955,
                "variance": 0.1664581212
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91759.60573,
              2375647.689,
              0.8597427958,
              -91263.34573,
              2376121.149,
              5.759742796
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91759.60572790878,
                    2375647.6888353936,
                    0.85974279584405
                  ],
                  [
                    -91759.60572790878,
                    2376121.1488353936,
                    0.85974279584405
                  ],
                  [
                    -91263.34572790877,
                    2376121.1488353936,
                    5.75974279584405
                  ],
                  [
                    -91263.34572790877,
                    2375647.6888353936,
                    5.75974279584405
                  ],
                  [
                    -91759.60572790878,
                    2375647.6888353936,
                    0.85974279584405
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:36:54+00:00",
            "end_time": "2018-09-08T04:12:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2416.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.51271620099806,
              71.36874407691114,
              0.835137146024541
            ],
            [
              -156.51310603700955,
              71.3722067758044,
              0.835137146024541
            ],
            [
              -156.50768389022465,
              71.37227572475328,
              1.555137146024541
            ],
            [
              -156.50729489370212,
              71.36881301353422,
              1.555137146024541
            ],
            [
              -156.51271620099806,
              71.36874407691114,
              0.835137146024541
            ]
          ]
        ]
      },
      "bbox": [
        -156.513106,
        71.36874408,
        0.835137146,
        -156.5072949,
        71.37227572,
        1.555137146
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:46Z",
        "pc:count": 287312,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91781.54392,
            "count": 287312,
            "maximum": -91707.32687,
            "minimum": -91905.80687,
            "name": "X",
            "position": 0,
            "stddev": 44.52475475,
            "variance": 1982.453785
          },
          {
            "average": 2376251.6,
            "count": 287312,
            "maximum": 2376498.337,
            "minimum": 2376121.357,
            "name": "Y",
            "position": 1,
            "stddev": 88.28269116,
            "variance": 7793.833558
          },
          {
            "average": 1.199702705,
            "count": 287312,
            "maximum": 1.555137146,
            "minimum": 0.835137146,
            "name": "Z",
            "position": 2,
            "stddev": 0.0785125326,
            "variance": 0.006164217775
          },
          {
            "average": 15692.95064,
            "count": 287312,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11424.70432,
            "variance": 130523868.8
          },
          {
            "average": 1,
            "count": 287312,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 287312,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5065503703,
            "count": 287312,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999579609,
            "variance": 0.2499579626
          },
          {
            "average": 0.0003619758312,
            "count": 287312,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01902225181,
            "variance": 0.0003618460641
          },
          {
            "average": 7.298706633,
            "count": 287312,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.810522661,
            "variance": 7.899037626
          },
          {
            "average": -2.046332252,
            "count": 287312,
            "maximum": 16.40999985,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.469433109,
            "variance": 55.79243097
          },
          {
            "average": 0.4861439828,
            "count": 287312,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998088437,
            "variance": 0.2498088803
          },
          {
            "average": 406.1523118,
            "count": 287312,
            "maximum": 407,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6471686639,
            "variance": 0.4188272796
          },
          {
            "average": 220415145,
            "count": 287312,
            "maximum": 220415466.1,
            "minimum": 220414330.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 355.721555,
            "variance": 126537.8247
          },
          {
            "average": 0.4861439828,
            "count": 287312,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998088437,
            "variance": 0.2498088803
          },
          {
            "average": 0,
            "count": 287312,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 287312,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 287312,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05883499471,
            "count": 287312,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2353160233,
            "variance": 0.05537363084
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91905.80687,
          2376121.357,
          0.835137146,
          -91707.32687,
          2376498.337,
          1.555137146
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91905.80686888869,
                2376121.357237057,
                0.835137146024541
              ],
              [
                -91905.80686888869,
                2376498.3372370573,
                0.835137146024541
              ],
              [
                -91707.32686888867,
                2376498.3372370573,
                1.555137146024541
              ],
              [
                -91707.32686888867,
                2376121.357237057,
                1.555137146024541
              ],
              [
                -91905.80686888869,
                2376121.357237057,
                0.835137146024541
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:46+00:00",
        "end_time": "2018-09-08T03:58:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2416.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2416.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2416.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2416.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.513106,
            71.36874408,
            0.835137146,
            -156.5072949,
            71.37227572,
            1.555137146
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.51271620099806,
                  71.36874407691114,
                  0.835137146024541
                ],
                [
                  -156.51310603700955,
                  71.3722067758044,
                  0.835137146024541
                ],
                [
                  -156.50768389022465,
                  71.37227572475328,
                  1.555137146024541
                ],
                [
                  -156.50729489370212,
                  71.36881301353422,
                  1.555137146024541
                ],
                [
                  -156.51271620099806,
                  71.36874407691114,
                  0.835137146024541
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2416.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2416.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:46Z",
            "pc:count": 287312,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91781.54392,
                "count": 287312,
                "maximum": -91707.32687,
                "minimum": -91905.80687,
                "name": "X",
                "position": 0,
                "stddev": 44.52475475,
                "variance": 1982.453785
              },
              {
                "average": 2376251.6,
                "count": 287312,
                "maximum": 2376498.337,
                "minimum": 2376121.357,
                "name": "Y",
                "position": 1,
                "stddev": 88.28269116,
                "variance": 7793.833558
              },
              {
                "average": 1.199702705,
                "count": 287312,
                "maximum": 1.555137146,
                "minimum": 0.835137146,
                "name": "Z",
                "position": 2,
                "stddev": 0.0785125326,
                "variance": 0.006164217775
              },
              {
                "average": 15692.95064,
                "count": 287312,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11424.70432,
                "variance": 130523868.8
              },
              {
                "average": 1,
                "count": 287312,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 287312,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5065503703,
                "count": 287312,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999579609,
                "variance": 0.2499579626
              },
              {
                "average": 0.0003619758312,
                "count": 287312,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01902225181,
                "variance": 0.0003618460641
              },
              {
                "average": 7.298706633,
                "count": 287312,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.810522661,
                "variance": 7.899037626
              },
              {
                "average": -2.046332252,
                "count": 287312,
                "maximum": 16.40999985,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.469433109,
                "variance": 55.79243097
              },
              {
                "average": 0.4861439828,
                "count": 287312,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998088437,
                "variance": 0.2498088803
              },
              {
                "average": 406.1523118,
                "count": 287312,
                "maximum": 407,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6471686639,
                "variance": 0.4188272796
              },
              {
                "average": 220415145,
                "count": 287312,
                "maximum": 220415466.1,
                "minimum": 220414330.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 355.721555,
                "variance": 126537.8247
              },
              {
                "average": 0.4861439828,
                "count": 287312,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998088437,
                "variance": 0.2498088803
              },
              {
                "average": 0,
                "count": 287312,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 287312,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 287312,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05883499471,
                "count": 287312,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2353160233,
                "variance": 0.05537363084
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91905.80687,
              2376121.357,
              0.835137146,
              -91707.32687,
              2376498.337,
              1.555137146
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91905.80686888869,
                    2376121.357237057,
                    0.835137146024541
                  ],
                  [
                    -91905.80686888869,
                    2376498.3372370573,
                    0.835137146024541
                  ],
                  [
                    -91707.32686888867,
                    2376498.3372370573,
                    1.555137146024541
                  ],
                  [
                    -91707.32686888867,
                    2376121.357237057,
                    1.555137146024541
                  ],
                  [
                    -91905.80686888869,
                    2376121.357237057,
                    0.835137146024541
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:46+00:00",
            "end_time": "2018-09-08T03:58:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2331.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6002895018652,
              71.33236206763057,
              0.913157980188739
            ],
            [
              -156.6007948888668,
              71.33670564211168,
              0.913157980188739
            ],
            [
              -156.58726384537493,
              71.33688368241012,
              21.633157980188738
            ],
            [
              -156.586761082393,
              71.33254006808836,
              21.633157980188738
            ],
            [
              -156.6002895018652,
              71.33236206763057,
              0.913157980188739
            ]
          ]
        ]
      },
      "bbox": [
        -156.6007949,
        71.33236207,
        0.9131579802,
        -156.5867611,
        71.33688368,
        21.63315798
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:28Z",
        "pc:count": 2543842,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95027.20465,
            "count": 2543842,
            "maximum": -94766.13897,
            "minimum": -95262.25897,
            "name": "X",
            "position": 0,
            "stddev": 133.0664017,
            "variance": 17706.66726
          },
          {
            "average": 2372516.042,
            "count": 2543842,
            "maximum": 2372762.143,
            "minimum": 2372289.123,
            "name": "Y",
            "position": 1,
            "stddev": 128.5579873,
            "variance": 16527.15609
          },
          {
            "average": 1.849594705,
            "count": 2543842,
            "maximum": 21.63315798,
            "minimum": 0.9131579802,
            "name": "Z",
            "position": 2,
            "stddev": 0.2930428454,
            "variance": 0.08587410923
          },
          {
            "average": 34272.54917,
            "count": 2543842,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14402.0539,
            "variance": 207419156.7
          },
          {
            "average": 1.000002752,
            "count": 2543842,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001658835959,
            "variance": 2.751736739e-06
          },
          {
            "average": 1.000005503,
            "count": 2543842,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002345945083,
            "variance": 5.503458334e-06
          },
          {
            "average": 0.5013397058,
            "count": 2543842,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983035,
            "variance": 0.2499983035
          },
          {
            "average": 0.0004190511832,
            "count": 2543842,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02046645411,
            "variance": 0.000418875744
          },
          {
            "average": 1.827409092,
            "count": 2543842,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.114487305,
            "variance": 4.471056563
          },
          {
            "average": 1.643674868,
            "count": 2543842,
            "maximum": 16.4279995,
            "minimum": -16.27199936,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.55398156,
            "variance": 111.3865268
          },
          {
            "average": 0.5228264963,
            "count": 2543842,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994787775,
            "variance": 0.2494790491
          },
          {
            "average": 408.5130216,
            "count": 2543842,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.016536128,
            "variance": 1.0333457
          },
          {
            "average": 220416469,
            "count": 2543842,
            "maximum": 220417368.4,
            "minimum": 220415541.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 596.6008809,
            "variance": 355932.6111
          },
          {
            "average": 0.5228264963,
            "count": 2543842,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994787775,
            "variance": 0.2494790491
          },
          {
            "average": 0,
            "count": 2543842,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2543842,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2543842,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2612961025,
            "count": 2543842,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4393410124,
            "variance": 0.1930205252
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95262.25897,
          2372289.123,
          0.9131579802,
          -94766.13897,
          2372762.143,
          21.63315798
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95262.25897372015,
                2372289.123377433,
                0.913157980188739
              ],
              [
                -95262.25897372015,
                2372762.1433774326,
                0.913157980188739
              ],
              [
                -94766.13897372015,
                2372762.1433774326,
                21.633157980188738
              ],
              [
                -94766.13897372015,
                2372289.123377433,
                21.633157980188738
              ],
              [
                -95262.25897372015,
                2372289.123377433,
                0.913157980188739
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:28+00:00",
        "end_time": "2018-09-08T04:19:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2331.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2331.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2331.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2331.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6007949,
            71.33236207,
            0.9131579802,
            -156.5867611,
            71.33688368,
            21.63315798
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6002895018652,
                  71.33236206763057,
                  0.913157980188739
                ],
                [
                  -156.6007948888668,
                  71.33670564211168,
                  0.913157980188739
                ],
                [
                  -156.58726384537493,
                  71.33688368241012,
                  21.633157980188738
                ],
                [
                  -156.586761082393,
                  71.33254006808836,
                  21.633157980188738
                ],
                [
                  -156.6002895018652,
                  71.33236206763057,
                  0.913157980188739
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2331.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2331.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:28Z",
            "pc:count": 2543842,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95027.20465,
                "count": 2543842,
                "maximum": -94766.13897,
                "minimum": -95262.25897,
                "name": "X",
                "position": 0,
                "stddev": 133.0664017,
                "variance": 17706.66726
              },
              {
                "average": 2372516.042,
                "count": 2543842,
                "maximum": 2372762.143,
                "minimum": 2372289.123,
                "name": "Y",
                "position": 1,
                "stddev": 128.5579873,
                "variance": 16527.15609
              },
              {
                "average": 1.849594705,
                "count": 2543842,
                "maximum": 21.63315798,
                "minimum": 0.9131579802,
                "name": "Z",
                "position": 2,
                "stddev": 0.2930428454,
                "variance": 0.08587410923
              },
              {
                "average": 34272.54917,
                "count": 2543842,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14402.0539,
                "variance": 207419156.7
              },
              {
                "average": 1.000002752,
                "count": 2543842,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001658835959,
                "variance": 2.751736739e-06
              },
              {
                "average": 1.000005503,
                "count": 2543842,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002345945083,
                "variance": 5.503458334e-06
              },
              {
                "average": 0.5013397058,
                "count": 2543842,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983035,
                "variance": 0.2499983035
              },
              {
                "average": 0.0004190511832,
                "count": 2543842,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02046645411,
                "variance": 0.000418875744
              },
              {
                "average": 1.827409092,
                "count": 2543842,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.114487305,
                "variance": 4.471056563
              },
              {
                "average": 1.643674868,
                "count": 2543842,
                "maximum": 16.4279995,
                "minimum": -16.27199936,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.55398156,
                "variance": 111.3865268
              },
              {
                "average": 0.5228264963,
                "count": 2543842,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994787775,
                "variance": 0.2494790491
              },
              {
                "average": 408.5130216,
                "count": 2543842,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.016536128,
                "variance": 1.0333457
              },
              {
                "average": 220416469,
                "count": 2543842,
                "maximum": 220417368.4,
                "minimum": 220415541.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 596.6008809,
                "variance": 355932.6111
              },
              {
                "average": 0.5228264963,
                "count": 2543842,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994787775,
                "variance": 0.2494790491
              },
              {
                "average": 0,
                "count": 2543842,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2543842,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2543842,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2612961025,
                "count": 2543842,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4393410124,
                "variance": 0.1930205252
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95262.25897,
              2372289.123,
              0.9131579802,
              -94766.13897,
              2372762.143,
              21.63315798
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95262.25897372015,
                    2372289.123377433,
                    0.913157980188739
                  ],
                  [
                    -95262.25897372015,
                    2372762.1433774326,
                    0.913157980188739
                  ],
                  [
                    -94766.13897372015,
                    2372762.1433774326,
                    21.633157980188738
                  ],
                  [
                    -94766.13897372015,
                    2372289.123377433,
                    21.633157980188738
                  ],
                  [
                    -95262.25897372015,
                    2372289.123377433,
                    0.913157980188739
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:28+00:00",
            "end_time": "2018-09-08T04:19:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2394.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.53416572372822,
              71.36054891534263,
              -53.01387259108256
            ],
            [
              -156.5346261856191,
              71.36460545440406,
              -53.01387259108256
            ],
            [
              -156.52108318152966,
              71.36477891813244,
              112.58612740891743
            ],
            [
              -156.52062517523612,
              71.36072234276047,
              112.58612740891743
            ],
            [
              -156.53416572372822,
              71.36054891534263,
              -53.01387259108256
            ]
          ]
        ]
      },
      "bbox": [
        -156.5346262,
        71.36054892,
        -53.01387259,
        -156.5206252,
        71.36477892,
        112.5861274
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:36Z",
        "pc:count": 1309257,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -92447.23608,
            "count": 1309257,
            "maximum": -92228.06529,
            "minimum": -92723.98529,
            "name": "X",
            "position": 0,
            "stddev": 135.1251979,
            "variance": 18258.8191
          },
          {
            "average": 2375436.332,
            "count": 1309257,
            "maximum": 2375701.882,
            "minimum": 2375260.222,
            "name": "Y",
            "position": 1,
            "stddev": 103.3272975,
            "variance": 10676.53041
          },
          {
            "average": 1.317576124,
            "count": 1309257,
            "maximum": 112.5861274,
            "minimum": -53.01387259,
            "name": "Z",
            "position": 2,
            "stddev": 0.5511434383,
            "variance": 0.3037590896
          },
          {
            "average": 14903.54594,
            "count": 1309257,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10551.25802,
            "variance": 111329045.7
          },
          {
            "average": 1.000000764,
            "count": 1309257,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008739519339,
            "variance": 7.637919828e-07
          },
          {
            "average": 1.000001528,
            "count": 1309257,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001235954206,
            "variance": 1.527582799e-06
          },
          {
            "average": 0.5079674961,
            "count": 1309257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999367059,
            "variance": 0.2499367099
          },
          {
            "average": 0.0005797181149,
            "count": 1309257,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02407036527,
            "variance": 0.0005793824844
          },
          {
            "average": 7.186900662,
            "count": 1309257,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.907442335,
            "variance": 8.453220929
          },
          {
            "average": -2.518551497,
            "count": 1309257,
            "maximum": 16.33799934,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.364837815,
            "variance": 54.24083603
          },
          {
            "average": 0.4855227049,
            "count": 1309257,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997905548,
            "variance": 0.2497905987
          },
          {
            "average": 406.7520021,
            "count": 1309257,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6884091637,
            "variance": 0.4739071767
          },
          {
            "average": 220415462.8,
            "count": 1309257,
            "maximum": 220416296.5,
            "minimum": 220414348.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 369.1845207,
            "variance": 136297.2103
          },
          {
            "average": 0.4855227049,
            "count": 1309257,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997905548,
            "variance": 0.2497905987
          },
          {
            "average": 0,
            "count": 1309257,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1309257,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1309257,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07372349355,
            "count": 1309257,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.261320478,
            "variance": 0.06828839221
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92723.98529,
          2375260.222,
          -53.01387259,
          -92228.06529,
          2375701.882,
          112.5861274
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92723.9852865532,
                2375260.2221126244,
                -53.01387259108256
              ],
              [
                -92723.9852865532,
                2375701.8821126246,
                -53.01387259108256
              ],
              [
                -92228.06528655319,
                2375701.8821126246,
                112.58612740891743
              ],
              [
                -92228.06528655319,
                2375260.2221126244,
                112.58612740891743
              ],
              [
                -92723.9852865532,
                2375260.2221126244,
                -53.01387259108256
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:36+00:00",
        "end_time": "2018-09-08T03:59:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2394.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2394.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2394.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2394.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5346262,
            71.36054892,
            -53.01387259,
            -156.5206252,
            71.36477892,
            112.5861274
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.53416572372822,
                  71.36054891534263,
                  -53.01387259108256
                ],
                [
                  -156.5346261856191,
                  71.36460545440406,
                  -53.01387259108256
                ],
                [
                  -156.52108318152966,
                  71.36477891813244,
                  112.58612740891743
                ],
                [
                  -156.52062517523612,
                  71.36072234276047,
                  112.58612740891743
                ],
                [
                  -156.53416572372822,
                  71.36054891534263,
                  -53.01387259108256
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2394.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2394.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:36Z",
            "pc:count": 1309257,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -92447.23608,
                "count": 1309257,
                "maximum": -92228.06529,
                "minimum": -92723.98529,
                "name": "X",
                "position": 0,
                "stddev": 135.1251979,
                "variance": 18258.8191
              },
              {
                "average": 2375436.332,
                "count": 1309257,
                "maximum": 2375701.882,
                "minimum": 2375260.222,
                "name": "Y",
                "position": 1,
                "stddev": 103.3272975,
                "variance": 10676.53041
              },
              {
                "average": 1.317576124,
                "count": 1309257,
                "maximum": 112.5861274,
                "minimum": -53.01387259,
                "name": "Z",
                "position": 2,
                "stddev": 0.5511434383,
                "variance": 0.3037590896
              },
              {
                "average": 14903.54594,
                "count": 1309257,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10551.25802,
                "variance": 111329045.7
              },
              {
                "average": 1.000000764,
                "count": 1309257,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008739519339,
                "variance": 7.637919828e-07
              },
              {
                "average": 1.000001528,
                "count": 1309257,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001235954206,
                "variance": 1.527582799e-06
              },
              {
                "average": 0.5079674961,
                "count": 1309257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999367059,
                "variance": 0.2499367099
              },
              {
                "average": 0.0005797181149,
                "count": 1309257,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02407036527,
                "variance": 0.0005793824844
              },
              {
                "average": 7.186900662,
                "count": 1309257,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.907442335,
                "variance": 8.453220929
              },
              {
                "average": -2.518551497,
                "count": 1309257,
                "maximum": 16.33799934,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.364837815,
                "variance": 54.24083603
              },
              {
                "average": 0.4855227049,
                "count": 1309257,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997905548,
                "variance": 0.2497905987
              },
              {
                "average": 406.7520021,
                "count": 1309257,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6884091637,
                "variance": 0.4739071767
              },
              {
                "average": 220415462.8,
                "count": 1309257,
                "maximum": 220416296.5,
                "minimum": 220414348.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 369.1845207,
                "variance": 136297.2103
              },
              {
                "average": 0.4855227049,
                "count": 1309257,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997905548,
                "variance": 0.2497905987
              },
              {
                "average": 0,
                "count": 1309257,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1309257,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1309257,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07372349355,
                "count": 1309257,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.261320478,
                "variance": 0.06828839221
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92723.98529,
              2375260.222,
              -53.01387259,
              -92228.06529,
              2375701.882,
              112.5861274
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92723.9852865532,
                    2375260.2221126244,
                    -53.01387259108256
                  ],
                  [
                    -92723.9852865532,
                    2375701.8821126246,
                    -53.01387259108256
                  ],
                  [
                    -92228.06528655319,
                    2375701.8821126246,
                    112.58612740891743
                  ],
                  [
                    -92228.06528655319,
                    2375260.2221126244,
                    112.58612740891743
                  ],
                  [
                    -92723.9852865532,
                    2375260.2221126244,
                    -53.01387259108256
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:36+00:00",
            "end_time": "2018-09-08T03:59:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2246.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58928829926572,
              71.30768163715221,
              1.47893148424483
            ],
            [
              -156.58979146195315,
              71.31202855181837,
              1.47893148424483
            ],
            [
              -156.57628069823684,
              71.31220573680962,
              10.03893148424483
            ],
            [
              -156.57578015523302,
              71.30785878252031,
              10.03893148424483
            ],
            [
              -156.58928829926572,
              71.30768163715221,
              1.47893148424483
            ]
          ]
        ]
      },
      "bbox": [
        -156.5897915,
        71.30768164,
        1.478931484,
        -156.5757802,
        71.31220574,
        10.03893148
      ],
      "properties": {
        "datetime": "2018-09-11T17:35:41Z",
        "pc:count": 3629969,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94713.50411,
            "count": 3629969,
            "maximum": -94468.20653,
            "minimum": -94964.12653,
            "name": "X",
            "position": 0,
            "stddev": 134.9056167,
            "variance": 18199.52542
          },
          {
            "average": 2369828.446,
            "count": 3629969,
            "maximum": 2370062.947,
            "minimum": 2369589.487,
            "name": "Y",
            "position": 1,
            "stddev": 126.23123,
            "variance": 15934.32343
          },
          {
            "average": 3.807495059,
            "count": 3629969,
            "maximum": 10.03893148,
            "minimum": 1.478931484,
            "name": "Z",
            "position": 2,
            "stddev": 0.3549246153,
            "variance": 0.1259714826
          },
          {
            "average": 42516.50939,
            "count": 3629969,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11621.32649,
            "variance": 135055229.3
          },
          {
            "average": 1.000000826,
            "count": 3629969,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0009090945405,
            "variance": 8.264528835e-07
          },
          {
            "average": 1.000001653,
            "count": 3629969,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001285653297,
            "variance": 1.652904401e-06
          },
          {
            "average": 0.4974474989,
            "count": 3629969,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999935536,
            "variance": 0.2499935536
          },
          {
            "average": 0.0004297557362,
            "count": 3629969,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02072609863,
            "variance": 0.0004295711646
          },
          {
            "average": 1.272303978,
            "count": 3629969,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4452662297,
            "variance": 0.1982620153
          },
          {
            "average": 3.153684781,
            "count": 3629969,
            "maximum": 20.53199959,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.83093245,
            "variance": 117.3090977
          },
          {
            "average": 0.5103415484,
            "count": 3629969,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998931098,
            "variance": 0.2498931212
          },
          {
            "average": 420.6782237,
            "count": 3629969,
            "maximum": 454,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.88937321,
            "variance": 192.9146882
          },
          {
            "average": 220464636.9,
            "count": 3629969,
            "maximum": 220722541.7,
            "minimum": 220418937.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 107289.0105,
            "variance": 11510931780.0
          },
          {
            "average": 0.5103415484,
            "count": 3629969,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998931098,
            "variance": 0.2498931212
          },
          {
            "average": 0,
            "count": 3629969,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3629969,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3629969,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2526189618,
            "count": 3629969,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4345142966,
            "variance": 0.1888026739
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94964.12653,
          2369589.487,
          1.478931484,
          -94468.20653,
          2370062.947,
          10.03893148
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94964.12653379173,
                2369589.487261235,
                1.47893148424483
              ],
              [
                -94964.12653379173,
                2370062.9472612347,
                1.47893148424483
              ],
              [
                -94468.20653379172,
                2370062.9472612347,
                10.03893148424483
              ],
              [
                -94468.20653379172,
                2369589.487261235,
                10.03893148424483
              ],
              [
                -94964.12653379173,
                2369589.487261235,
                1.47893148424483
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:35:41+00:00",
        "end_time": "2018-09-08T05:15:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2246.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2246.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2246.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2246.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5897915,
            71.30768164,
            1.478931484,
            -156.5757802,
            71.31220574,
            10.03893148
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58928829926572,
                  71.30768163715221,
                  1.47893148424483
                ],
                [
                  -156.58979146195315,
                  71.31202855181837,
                  1.47893148424483
                ],
                [
                  -156.57628069823684,
                  71.31220573680962,
                  10.03893148424483
                ],
                [
                  -156.57578015523302,
                  71.30785878252031,
                  10.03893148424483
                ],
                [
                  -156.58928829926572,
                  71.30768163715221,
                  1.47893148424483
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2246.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2246.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:35:41Z",
            "pc:count": 3629969,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94713.50411,
                "count": 3629969,
                "maximum": -94468.20653,
                "minimum": -94964.12653,
                "name": "X",
                "position": 0,
                "stddev": 134.9056167,
                "variance": 18199.52542
              },
              {
                "average": 2369828.446,
                "count": 3629969,
                "maximum": 2370062.947,
                "minimum": 2369589.487,
                "name": "Y",
                "position": 1,
                "stddev": 126.23123,
                "variance": 15934.32343
              },
              {
                "average": 3.807495059,
                "count": 3629969,
                "maximum": 10.03893148,
                "minimum": 1.478931484,
                "name": "Z",
                "position": 2,
                "stddev": 0.3549246153,
                "variance": 0.1259714826
              },
              {
                "average": 42516.50939,
                "count": 3629969,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11621.32649,
                "variance": 135055229.3
              },
              {
                "average": 1.000000826,
                "count": 3629969,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0009090945405,
                "variance": 8.264528835e-07
              },
              {
                "average": 1.000001653,
                "count": 3629969,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001285653297,
                "variance": 1.652904401e-06
              },
              {
                "average": 0.4974474989,
                "count": 3629969,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999935536,
                "variance": 0.2499935536
              },
              {
                "average": 0.0004297557362,
                "count": 3629969,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02072609863,
                "variance": 0.0004295711646
              },
              {
                "average": 1.272303978,
                "count": 3629969,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4452662297,
                "variance": 0.1982620153
              },
              {
                "average": 3.153684781,
                "count": 3629969,
                "maximum": 20.53199959,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.83093245,
                "variance": 117.3090977
              },
              {
                "average": 0.5103415484,
                "count": 3629969,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998931098,
                "variance": 0.2498931212
              },
              {
                "average": 420.6782237,
                "count": 3629969,
                "maximum": 454,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.88937321,
                "variance": 192.9146882
              },
              {
                "average": 220464636.9,
                "count": 3629969,
                "maximum": 220722541.7,
                "minimum": 220418937.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 107289.0105,
                "variance": 11510931780.0
              },
              {
                "average": 0.5103415484,
                "count": 3629969,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998931098,
                "variance": 0.2498931212
              },
              {
                "average": 0,
                "count": 3629969,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3629969,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3629969,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2526189618,
                "count": 3629969,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4345142966,
                "variance": 0.1888026739
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94964.12653,
              2369589.487,
              1.478931484,
              -94468.20653,
              2370062.947,
              10.03893148
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94964.12653379173,
                    2369589.487261235,
                    1.47893148424483
                  ],
                  [
                    -94964.12653379173,
                    2370062.9472612347,
                    1.47893148424483
                  ],
                  [
                    -94468.20653379172,
                    2370062.9472612347,
                    10.03893148424483
                  ],
                  [
                    -94468.20653379172,
                    2369589.487261235,
                    10.03893148424483
                  ],
                  [
                    -94964.12653379173,
                    2369589.487261235,
                    1.47893148424483
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:35:41+00:00",
            "end_time": "2018-09-08T05:15:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2417.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.50791853199226,
              71.36854073274745,
              0.823632137465541
            ],
            [
              -156.5084052572973,
              71.37287220203427,
              0.823632137465541
            ],
            [
              -156.4948466556256,
              71.37304400804351,
              5.183632137465541
            ],
            [
              -156.4943625562367,
              71.36871250033789,
              5.183632137465541
            ],
            [
              -156.50791853199226,
              71.36854073274745,
              0.823632137465541
            ]
          ]
        ]
      },
      "bbox": [
        -156.5084053,
        71.36854073,
        0.8236321375,
        -156.4943626,
        71.37304401,
        5.183632137
      ],
      "properties": {
        "datetime": "2018-09-08T04:31:58Z",
        "pc:count": 1914305,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91469.55264,
            "count": 1914305,
            "maximum": -91234.94471,
            "minimum": -91731.24471,
            "name": "X",
            "position": 0,
            "stddev": 137.4866199,
            "variance": 18902.57065
          },
          {
            "average": 2376314.782,
            "count": 1914305,
            "maximum": 2376564.178,
            "minimum": 2376092.618,
            "name": "Y",
            "position": 1,
            "stddev": 130.1119094,
            "variance": 16929.10896
          },
          {
            "average": 1.689786752,
            "count": 1914305,
            "maximum": 5.183632137,
            "minimum": 0.8236321375,
            "name": "Z",
            "position": 2,
            "stddev": 1.101036086,
            "variance": 1.212280463
          },
          {
            "average": 14966.43776,
            "count": 1914305,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9897.482281,
            "variance": 97960155.51
          },
          {
            "average": 1,
            "count": 1914305,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1914305,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5078882414,
            "count": 1914305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999379024,
            "variance": 0.2499379062
          },
          {
            "average": 0.0005620838895,
            "count": 1914305,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02370165067,
            "variance": 0.0005617682446
          },
          {
            "average": 6.28270051,
            "count": 1914305,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.410285094,
            "variance": 11.63004442
          },
          {
            "average": -2.577574293,
            "count": 1914305,
            "maximum": 16.33200073,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.855990703,
            "variance": 61.71658992
          },
          {
            "average": 0.4962025383,
            "count": 1914305,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999857097,
            "variance": 0.2499857099
          },
          {
            "average": 406.5266047,
            "count": 1914305,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7529006815,
            "variance": 0.5668594362
          },
          {
            "average": 220415347.6,
            "count": 1914305,
            "maximum": 220416318.3,
            "minimum": 220414324.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 412.972011,
            "variance": 170545.8818
          },
          {
            "average": 0.4962025383,
            "count": 1914305,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999857097,
            "variance": 0.2499857099
          },
          {
            "average": 0,
            "count": 1914305,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1914305,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1914305,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07289642977,
            "count": 1914305,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2599664894,
            "variance": 0.0675825756
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91731.24471,
          2376092.618,
          0.8236321375,
          -91234.94471,
          2376564.178,
          5.183632137
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91731.24471479887,
                2376092.6176092993,
                0.823632137465541
              ],
              [
                -91731.24471479887,
                2376564.177609299,
                0.823632137465541
              ],
              [
                -91234.94471479888,
                2376564.177609299,
                5.183632137465541
              ],
              [
                -91234.94471479888,
                2376092.6176092993,
                5.183632137465541
              ],
              [
                -91731.24471479887,
                2376092.6176092993,
                0.823632137465541
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:31:58+00:00",
        "end_time": "2018-09-08T03:58:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2417.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2417.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2417.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2417.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5084053,
            71.36854073,
            0.8236321375,
            -156.4943626,
            71.37304401,
            5.183632137
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.50791853199226,
                  71.36854073274745,
                  0.823632137465541
                ],
                [
                  -156.5084052572973,
                  71.37287220203427,
                  0.823632137465541
                ],
                [
                  -156.4948466556256,
                  71.37304400804351,
                  5.183632137465541
                ],
                [
                  -156.4943625562367,
                  71.36871250033789,
                  5.183632137465541
                ],
                [
                  -156.50791853199226,
                  71.36854073274745,
                  0.823632137465541
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2417.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2417.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:31:58Z",
            "pc:count": 1914305,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91469.55264,
                "count": 1914305,
                "maximum": -91234.94471,
                "minimum": -91731.24471,
                "name": "X",
                "position": 0,
                "stddev": 137.4866199,
                "variance": 18902.57065
              },
              {
                "average": 2376314.782,
                "count": 1914305,
                "maximum": 2376564.178,
                "minimum": 2376092.618,
                "name": "Y",
                "position": 1,
                "stddev": 130.1119094,
                "variance": 16929.10896
              },
              {
                "average": 1.689786752,
                "count": 1914305,
                "maximum": 5.183632137,
                "minimum": 0.8236321375,
                "name": "Z",
                "position": 2,
                "stddev": 1.101036086,
                "variance": 1.212280463
              },
              {
                "average": 14966.43776,
                "count": 1914305,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9897.482281,
                "variance": 97960155.51
              },
              {
                "average": 1,
                "count": 1914305,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1914305,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5078882414,
                "count": 1914305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999379024,
                "variance": 0.2499379062
              },
              {
                "average": 0.0005620838895,
                "count": 1914305,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02370165067,
                "variance": 0.0005617682446
              },
              {
                "average": 6.28270051,
                "count": 1914305,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.410285094,
                "variance": 11.63004442
              },
              {
                "average": -2.577574293,
                "count": 1914305,
                "maximum": 16.33200073,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.855990703,
                "variance": 61.71658992
              },
              {
                "average": 0.4962025383,
                "count": 1914305,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999857097,
                "variance": 0.2499857099
              },
              {
                "average": 406.5266047,
                "count": 1914305,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7529006815,
                "variance": 0.5668594362
              },
              {
                "average": 220415347.6,
                "count": 1914305,
                "maximum": 220416318.3,
                "minimum": 220414324.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 412.972011,
                "variance": 170545.8818
              },
              {
                "average": 0.4962025383,
                "count": 1914305,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999857097,
                "variance": 0.2499857099
              },
              {
                "average": 0,
                "count": 1914305,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1914305,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1914305,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07289642977,
                "count": 1914305,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2599664894,
                "variance": 0.0675825756
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91731.24471,
              2376092.618,
              0.8236321375,
              -91234.94471,
              2376564.178,
              5.183632137
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91731.24471479887,
                    2376092.6176092993,
                    0.823632137465541
                  ],
                  [
                    -91731.24471479887,
                    2376564.177609299,
                    0.823632137465541
                  ],
                  [
                    -91234.94471479888,
                    2376564.177609299,
                    5.183632137465541
                  ],
                  [
                    -91234.94471479888,
                    2376092.6176092993,
                    5.183632137465541
                  ],
                  [
                    -91731.24471479887,
                    2376092.6176092993,
                    0.823632137465541
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:31:58+00:00",
            "end_time": "2018-09-08T03:58:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2407.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4954248627091,
              71.36436120188866,
              0.784135322338898
            ],
            [
              -156.49590905326784,
              71.36869239420163,
              0.784135322338898
            ],
            [
              -156.48235453243697,
              71.36886331698066,
              16.304135322338897
            ],
            [
              -156.48187296645722,
              71.36453208645807,
              16.304135322338897
            ],
            [
              -156.4954248627091,
              71.36436120188866,
              0.784135322338898
            ]
          ]
        ]
      },
      "bbox": [
        -156.4959091,
        71.3643612,
        0.7841353223,
        -156.481873,
        71.36886332,
        16.30413532
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:54Z",
        "pc:count": 1764383,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91039.2017,
            "count": 1764383,
            "maximum": -90795.32566,
            "minimum": -91291.56566,
            "name": "X",
            "position": 0,
            "stddev": 134.2709671,
            "variance": 18028.69261
          },
          {
            "average": 2375860.748,
            "count": 1764383,
            "maximum": 2376092.557,
            "minimum": 2375621.017,
            "name": "Y",
            "position": 1,
            "stddev": 127.6951359,
            "variance": 16306.04772
          },
          {
            "average": 1.127124424,
            "count": 1764383,
            "maximum": 16.30413532,
            "minimum": 0.7841353223,
            "name": "Z",
            "position": 2,
            "stddev": 0.09831323587,
            "variance": 0.009665492347
          },
          {
            "average": 14965.10835,
            "count": 1764383,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11113.8792,
            "variance": 123518310.9
          },
          {
            "average": 1,
            "count": 1764383,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1764383,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.504930052,
            "count": 1764383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999758357,
            "variance": 0.2499758363
          },
          {
            "average": 0.0006325157293,
            "count": 1764383,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02514191742,
            "variance": 0.0006321160114
          },
          {
            "average": 7.223327928,
            "count": 1764383,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.894614796,
            "variance": 8.378794817
          },
          {
            "average": -1.001949834,
            "count": 1764383,
            "maximum": 16.43400002,
            "minimum": -15.94799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.949564743,
            "variance": 63.19557961
          },
          {
            "average": 0.4830742532,
            "count": 1764383,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997135786,
            "variance": 0.2497136606
          },
          {
            "average": 408.2279533,
            "count": 1764383,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7604964359,
            "variance": 0.5783548291
          },
          {
            "average": 220416303.6,
            "count": 1764383,
            "maximum": 220417454.2,
            "minimum": 220415190.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 439.1374409,
            "variance": 192841.692
          },
          {
            "average": 0.4830742532,
            "count": 1764383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997135786,
            "variance": 0.2497136606
          },
          {
            "average": 0,
            "count": 1764383,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1764383,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1764383,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08781086646,
            "count": 1764383,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.283019723,
            "variance": 0.08010016359
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91291.56566,
          2375621.017,
          0.7841353223,
          -90795.32566,
          2376092.557,
          16.30413532
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91291.5656593166,
                2375621.0169853675,
                0.784135322338898
              ],
              [
                -91291.5656593166,
                2376092.5569853676,
                0.784135322338898
              ],
              [
                -90795.32565931662,
                2376092.5569853676,
                16.304135322338897
              ],
              [
                -90795.32565931662,
                2375621.0169853675,
                16.304135322338897
              ],
              [
                -91291.5656593166,
                2375621.0169853675,
                0.784135322338898
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:54+00:00",
        "end_time": "2018-09-08T04:13:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2407.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2407.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2407.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2407.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4959091,
            71.3643612,
            0.7841353223,
            -156.481873,
            71.36886332,
            16.30413532
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4954248627091,
                  71.36436120188866,
                  0.784135322338898
                ],
                [
                  -156.49590905326784,
                  71.36869239420163,
                  0.784135322338898
                ],
                [
                  -156.48235453243697,
                  71.36886331698066,
                  16.304135322338897
                ],
                [
                  -156.48187296645722,
                  71.36453208645807,
                  16.304135322338897
                ],
                [
                  -156.4954248627091,
                  71.36436120188866,
                  0.784135322338898
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2407.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2407.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:54Z",
            "pc:count": 1764383,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91039.2017,
                "count": 1764383,
                "maximum": -90795.32566,
                "minimum": -91291.56566,
                "name": "X",
                "position": 0,
                "stddev": 134.2709671,
                "variance": 18028.69261
              },
              {
                "average": 2375860.748,
                "count": 1764383,
                "maximum": 2376092.557,
                "minimum": 2375621.017,
                "name": "Y",
                "position": 1,
                "stddev": 127.6951359,
                "variance": 16306.04772
              },
              {
                "average": 1.127124424,
                "count": 1764383,
                "maximum": 16.30413532,
                "minimum": 0.7841353223,
                "name": "Z",
                "position": 2,
                "stddev": 0.09831323587,
                "variance": 0.009665492347
              },
              {
                "average": 14965.10835,
                "count": 1764383,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11113.8792,
                "variance": 123518310.9
              },
              {
                "average": 1,
                "count": 1764383,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1764383,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.504930052,
                "count": 1764383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999758357,
                "variance": 0.2499758363
              },
              {
                "average": 0.0006325157293,
                "count": 1764383,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02514191742,
                "variance": 0.0006321160114
              },
              {
                "average": 7.223327928,
                "count": 1764383,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.894614796,
                "variance": 8.378794817
              },
              {
                "average": -1.001949834,
                "count": 1764383,
                "maximum": 16.43400002,
                "minimum": -15.94799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.949564743,
                "variance": 63.19557961
              },
              {
                "average": 0.4830742532,
                "count": 1764383,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997135786,
                "variance": 0.2497136606
              },
              {
                "average": 408.2279533,
                "count": 1764383,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7604964359,
                "variance": 0.5783548291
              },
              {
                "average": 220416303.6,
                "count": 1764383,
                "maximum": 220417454.2,
                "minimum": 220415190.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 439.1374409,
                "variance": 192841.692
              },
              {
                "average": 0.4830742532,
                "count": 1764383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997135786,
                "variance": 0.2497136606
              },
              {
                "average": 0,
                "count": 1764383,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1764383,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1764383,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08781086646,
                "count": 1764383,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.283019723,
                "variance": 0.08010016359
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91291.56566,
              2375621.017,
              0.7841353223,
              -90795.32566,
              2376092.557,
              16.30413532
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91291.5656593166,
                    2375621.0169853675,
                    0.784135322338898
                  ],
                  [
                    -91291.5656593166,
                    2376092.5569853676,
                    0.784135322338898
                  ],
                  [
                    -90795.32565931662,
                    2376092.5569853676,
                    16.304135322338897
                  ],
                  [
                    -90795.32565931662,
                    2375621.0169853675,
                    16.304135322338897
                  ],
                  [
                    -91291.5656593166,
                    2375621.0169853675,
                    0.784135322338898
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:54+00:00",
            "end_time": "2018-09-08T04:13:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2352.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57410875829905,
              71.34040494247797,
              0.842987322427405
            ],
            [
              -156.5746044984511,
              71.34470767989761,
              0.842987322427405
            ],
            [
              -156.56107113233801,
              71.3448838975294,
              1.362987322427405
            ],
            [
              -156.56057799285446,
              71.34058112102952,
              1.362987322427405
            ],
            [
              -156.57410875829905,
              71.34040494247797,
              0.842987322427405
            ]
          ]
        ]
      },
      "bbox": [
        -156.5746045,
        71.34040494,
        0.8429873224,
        -156.560578,
        71.3448839,
        1.362987322
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:45Z",
        "pc:count": 1257681,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94061.71327,
            "count": 1257681,
            "maximum": -93773.66938,
            "minimum": -94269.68938,
            "name": "X",
            "position": 0,
            "stddev": 117.1910021,
            "variance": 13733.73096
          },
          {
            "average": 2373378.704,
            "count": 1257681,
            "maximum": 2373594.836,
            "minimum": 2373126.296,
            "name": "Y",
            "position": 1,
            "stddev": 133.335554,
            "variance": 17778.36995
          },
          {
            "average": 1.098628673,
            "count": 1257681,
            "maximum": 1.362987322,
            "minimum": 0.8429873224,
            "name": "Z",
            "position": 2,
            "stddev": 0.05022601184,
            "variance": 0.002522652266
          },
          {
            "average": 15355.25666,
            "count": 1257681,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11950.38046,
            "variance": 142811593.2
          },
          {
            "average": 1,
            "count": 1257681,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1257681,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5075444409,
            "count": 1257681,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999432769,
            "variance": 0.2499432801
          },
          {
            "average": 0.0007179881067,
            "count": 1257681,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02678568965,
            "variance": 0.0007174731702
          },
          {
            "average": 7.863886788,
            "count": 1257681,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.269072454,
            "variance": 5.1486898
          },
          {
            "average": -2.082103738,
            "count": 1257681,
            "maximum": 16.48200035,
            "minimum": -15.75,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.117089034,
            "variance": 50.65295631
          },
          {
            "average": 0.4798760576,
            "count": 1257681,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995950614,
            "variance": 0.2495952254
          },
          {
            "average": 408.345792,
            "count": 1257681,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7168308649,
            "variance": 0.5138464889
          },
          {
            "average": 220416368.5,
            "count": 1257681,
            "maximum": 220417385,
            "minimum": 220415518.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 394.8173869,
            "variance": 155880.769
          },
          {
            "average": 0.4798760576,
            "count": 1257681,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995950614,
            "variance": 0.2495952254
          },
          {
            "average": 0,
            "count": 1257681,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1257681,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1257681,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06135975657,
            "count": 1257681,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2399891302,
            "variance": 0.05759478264
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94269.68938,
          2373126.296,
          0.8429873224,
          -93773.66938,
          2373594.836,
          1.362987322
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94269.68937845466,
                2373126.2958405335,
                0.842987322427405
              ],
              [
                -94269.68937845466,
                2373594.8358405335,
                0.842987322427405
              ],
              [
                -93773.66937845467,
                2373594.8358405335,
                1.362987322427405
              ],
              [
                -93773.66937845467,
                2373126.2958405335,
                1.362987322427405
              ],
              [
                -94269.68937845466,
                2373126.2958405335,
                0.842987322427405
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:45+00:00",
        "end_time": "2018-09-08T04:18:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2352.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2352.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2352.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2352.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5746045,
            71.34040494,
            0.8429873224,
            -156.560578,
            71.3448839,
            1.362987322
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57410875829905,
                  71.34040494247797,
                  0.842987322427405
                ],
                [
                  -156.5746044984511,
                  71.34470767989761,
                  0.842987322427405
                ],
                [
                  -156.56107113233801,
                  71.3448838975294,
                  1.362987322427405
                ],
                [
                  -156.56057799285446,
                  71.34058112102952,
                  1.362987322427405
                ],
                [
                  -156.57410875829905,
                  71.34040494247797,
                  0.842987322427405
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2352.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2352.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:45Z",
            "pc:count": 1257681,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94061.71327,
                "count": 1257681,
                "maximum": -93773.66938,
                "minimum": -94269.68938,
                "name": "X",
                "position": 0,
                "stddev": 117.1910021,
                "variance": 13733.73096
              },
              {
                "average": 2373378.704,
                "count": 1257681,
                "maximum": 2373594.836,
                "minimum": 2373126.296,
                "name": "Y",
                "position": 1,
                "stddev": 133.335554,
                "variance": 17778.36995
              },
              {
                "average": 1.098628673,
                "count": 1257681,
                "maximum": 1.362987322,
                "minimum": 0.8429873224,
                "name": "Z",
                "position": 2,
                "stddev": 0.05022601184,
                "variance": 0.002522652266
              },
              {
                "average": 15355.25666,
                "count": 1257681,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11950.38046,
                "variance": 142811593.2
              },
              {
                "average": 1,
                "count": 1257681,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1257681,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5075444409,
                "count": 1257681,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999432769,
                "variance": 0.2499432801
              },
              {
                "average": 0.0007179881067,
                "count": 1257681,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02678568965,
                "variance": 0.0007174731702
              },
              {
                "average": 7.863886788,
                "count": 1257681,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.269072454,
                "variance": 5.1486898
              },
              {
                "average": -2.082103738,
                "count": 1257681,
                "maximum": 16.48200035,
                "minimum": -15.75,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.117089034,
                "variance": 50.65295631
              },
              {
                "average": 0.4798760576,
                "count": 1257681,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995950614,
                "variance": 0.2495952254
              },
              {
                "average": 408.345792,
                "count": 1257681,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7168308649,
                "variance": 0.5138464889
              },
              {
                "average": 220416368.5,
                "count": 1257681,
                "maximum": 220417385,
                "minimum": 220415518.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 394.8173869,
                "variance": 155880.769
              },
              {
                "average": 0.4798760576,
                "count": 1257681,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995950614,
                "variance": 0.2495952254
              },
              {
                "average": 0,
                "count": 1257681,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1257681,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1257681,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06135975657,
                "count": 1257681,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2399891302,
                "variance": 0.05759478264
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94269.68938,
              2373126.296,
              0.8429873224,
              -93773.66938,
              2373594.836,
              1.362987322
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94269.68937845466,
                    2373126.2958405335,
                    0.842987322427405
                  ],
                  [
                    -94269.68937845466,
                    2373594.8358405335,
                    0.842987322427405
                  ],
                  [
                    -93773.66937845467,
                    2373594.8358405335,
                    1.362987322427405
                  ],
                  [
                    -93773.66937845467,
                    2373126.2958405335,
                    1.362987322427405
                  ],
                  [
                    -94269.68937845466,
                    2373126.2958405335,
                    0.842987322427405
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:45+00:00",
            "end_time": "2018-09-08T04:18:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2320.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58779880856017,
              71.32816479994777,
              1.974734647625127
            ],
            [
              -156.5883008666196,
              71.33250130359079,
              1.974734647625127
            ],
            [
              -156.5747717225849,
              71.33267848893747,
              3.774734647625127
            ],
            [
              -156.57427228352753,
              71.32834194571929,
              3.774734647625127
            ],
            [
              -156.58779880856017,
              71.32816479994777,
              1.974734647625127
            ]
          ]
        ]
      },
      "bbox": [
        -156.5883009,
        71.3281648,
        1.974734648,
        -156.5742723,
        71.33267849,
        3.774734648
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:59Z",
        "pc:count": 2918383,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94577.05923,
            "count": 2918383,
            "maximum": -94326.54486,
            "minimum": -94822.68486,
            "name": "X",
            "position": 0,
            "stddev": 138.3226763,
            "variance": 19133.16279
          },
          {
            "average": 2372043.063,
            "count": 2918383,
            "maximum": 2372287.106,
            "minimum": 2371814.846,
            "name": "Y",
            "position": 1,
            "stddev": 129.3693657,
            "variance": 16736.43277
          },
          {
            "average": 2.947057547,
            "count": 2918383,
            "maximum": 3.774734648,
            "minimum": 1.974734648,
            "name": "Z",
            "position": 2,
            "stddev": 0.301526925,
            "variance": 0.09091848651
          },
          {
            "average": 33244.39664,
            "count": 2918383,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13945.24793,
            "variance": 194469939.9
          },
          {
            "average": 1,
            "count": 2918383,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2918383,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5037440254,
            "count": 2918383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999860677,
            "variance": 0.2499860679
          },
          {
            "average": 0.000361158902,
            "count": 2918383,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01900075235,
            "variance": 0.00036102859
          },
          {
            "average": 1.515214761,
            "count": 2918383,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.487012947,
            "variance": 2.211207504
          },
          {
            "average": 0.5270722077,
            "count": 2918383,
            "maximum": 16.78800011,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.19471882,
            "variance": 103.9322919
          },
          {
            "average": 0.5241762305,
            "count": 2918383,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994152534,
            "variance": 0.2494155953
          },
          {
            "average": 410.334966,
            "count": 2918383,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9317711707,
            "variance": 0.8681975145
          },
          {
            "average": 220417491.6,
            "count": 2918383,
            "maximum": 220418479.2,
            "minimum": 220416689.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 530.6416518,
            "variance": 281580.5627
          },
          {
            "average": 0.5241762305,
            "count": 2918383,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994152534,
            "variance": 0.2494155953
          },
          {
            "average": 0,
            "count": 2918383,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2918383,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2918383,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2291584072,
            "count": 2918383,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4202914372,
            "variance": 0.1766448922
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94822.68486,
          2371814.846,
          1.974734648,
          -94326.54486,
          2372287.106,
          3.774734648
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94822.68486296487,
                2371814.846132299,
                1.974734647625127
              ],
              [
                -94822.68486296487,
                2372287.1061322987,
                1.974734647625127
              ],
              [
                -94326.54486296486,
                2372287.1061322987,
                3.774734647625127
              ],
              [
                -94326.54486296486,
                2371814.846132299,
                3.774734647625127
              ],
              [
                -94822.68486296487,
                2371814.846132299,
                1.974734647625127
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:59+00:00",
        "end_time": "2018-09-08T04:38:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2320.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2320.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2320.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2320.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5883009,
            71.3281648,
            1.974734648,
            -156.5742723,
            71.33267849,
            3.774734648
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58779880856017,
                  71.32816479994777,
                  1.974734647625127
                ],
                [
                  -156.5883008666196,
                  71.33250130359079,
                  1.974734647625127
                ],
                [
                  -156.5747717225849,
                  71.33267848893747,
                  3.774734647625127
                ],
                [
                  -156.57427228352753,
                  71.32834194571929,
                  3.774734647625127
                ],
                [
                  -156.58779880856017,
                  71.32816479994777,
                  1.974734647625127
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2320.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2320.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:59Z",
            "pc:count": 2918383,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94577.05923,
                "count": 2918383,
                "maximum": -94326.54486,
                "minimum": -94822.68486,
                "name": "X",
                "position": 0,
                "stddev": 138.3226763,
                "variance": 19133.16279
              },
              {
                "average": 2372043.063,
                "count": 2918383,
                "maximum": 2372287.106,
                "minimum": 2371814.846,
                "name": "Y",
                "position": 1,
                "stddev": 129.3693657,
                "variance": 16736.43277
              },
              {
                "average": 2.947057547,
                "count": 2918383,
                "maximum": 3.774734648,
                "minimum": 1.974734648,
                "name": "Z",
                "position": 2,
                "stddev": 0.301526925,
                "variance": 0.09091848651
              },
              {
                "average": 33244.39664,
                "count": 2918383,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13945.24793,
                "variance": 194469939.9
              },
              {
                "average": 1,
                "count": 2918383,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2918383,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5037440254,
                "count": 2918383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999860677,
                "variance": 0.2499860679
              },
              {
                "average": 0.000361158902,
                "count": 2918383,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01900075235,
                "variance": 0.00036102859
              },
              {
                "average": 1.515214761,
                "count": 2918383,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.487012947,
                "variance": 2.211207504
              },
              {
                "average": 0.5270722077,
                "count": 2918383,
                "maximum": 16.78800011,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.19471882,
                "variance": 103.9322919
              },
              {
                "average": 0.5241762305,
                "count": 2918383,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994152534,
                "variance": 0.2494155953
              },
              {
                "average": 410.334966,
                "count": 2918383,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9317711707,
                "variance": 0.8681975145
              },
              {
                "average": 220417491.6,
                "count": 2918383,
                "maximum": 220418479.2,
                "minimum": 220416689.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 530.6416518,
                "variance": 281580.5627
              },
              {
                "average": 0.5241762305,
                "count": 2918383,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994152534,
                "variance": 0.2494155953
              },
              {
                "average": 0,
                "count": 2918383,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2918383,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2918383,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2291584072,
                "count": 2918383,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4202914372,
                "variance": 0.1766448922
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94822.68486,
              2371814.846,
              1.974734648,
              -94326.54486,
              2372287.106,
              3.774734648
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94822.68486296487,
                    2371814.846132299,
                    1.974734647625127
                  ],
                  [
                    -94822.68486296487,
                    2372287.1061322987,
                    1.974734647625127
                  ],
                  [
                    -94326.54486296486,
                    2372287.1061322987,
                    3.774734647625127
                  ],
                  [
                    -94326.54486296486,
                    2371814.846132299,
                    3.774734647625127
                  ],
                  [
                    -94822.68486296487,
                    2371814.846132299,
                    1.974734647625127
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:59+00:00",
            "end_time": "2018-09-08T04:38:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2221.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66621799791105,
              71.30414271520486,
              3.730715919115895
            ],
            [
              -156.66673617331097,
              71.30849061162898,
              3.730715919115895
            ],
            [
              -156.653228161587,
              71.30867306763444,
              35.95071591911589
            ],
            [
              -156.6527126053375,
              71.30432513040753,
              35.95071591911589
            ],
            [
              -156.66621799791105,
              71.30414271520486,
              3.730715919115895
            ]
          ]
        ]
      },
      "bbox": [
        -156.6667362,
        71.30414272,
        3.730715919,
        -156.6527126,
        71.30867307,
        35.95071592
      ],
      "properties": {
        "datetime": "2018-09-08T05:06:54Z",
        "pc:count": 2640914,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97578.07229,
            "count": 2640914,
            "maximum": -97303.62727,
            "minimum": -97799.54727,
            "name": "X",
            "position": 0,
            "stddev": 130.0789601,
            "variance": 16920.53586
          },
          {
            "average": 2369529.464,
            "count": 2640914,
            "maximum": 2369789.864,
            "minimum": 2369316.264,
            "name": "Y",
            "position": 1,
            "stddev": 130.651857,
            "variance": 17069.90775
          },
          {
            "average": 4.516143767,
            "count": 2640914,
            "maximum": 35.95071592,
            "minimum": 3.730715919,
            "name": "Z",
            "position": 2,
            "stddev": 0.50551975,
            "variance": 0.2555502176
          },
          {
            "average": 36656.97738,
            "count": 2640914,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14083.36723,
            "variance": 198341232.5
          },
          {
            "average": 1.000004544,
            "count": 2640914,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002131633757,
            "variance": 4.543862472e-06
          },
          {
            "average": 1.000009088,
            "count": 2640914,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00301457852,
            "variance": 9.087683651e-06
          },
          {
            "average": 0.5033931434,
            "count": 2640914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999885811,
            "variance": 0.2499885812
          },
          {
            "average": 0.000396453652,
            "count": 2640914,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01990720037,
            "variance": 0.0003962966266
          },
          {
            "average": 1.748150072,
            "count": 2640914,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.894607563,
            "variance": 3.589537818
          },
          {
            "average": 0.4828549152,
            "count": 2640914,
            "maximum": 16.3560009,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21692699,
            "variance": 104.3855971
          },
          {
            "average": 0.5232196126,
            "count": 2640914,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994606532,
            "variance": 0.2494609441
          },
          {
            "average": 410.555407,
            "count": 2640914,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9522853544,
            "variance": 0.9068473961
          },
          {
            "average": 220417616.6,
            "count": 2640914,
            "maximum": 220418414.8,
            "minimum": 220416756.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 529.8783423,
            "variance": 280771.0576
          },
          {
            "average": 0.5232196126,
            "count": 2640914,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994606532,
            "variance": 0.2494609441
          },
          {
            "average": 0,
            "count": 2640914,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2640914,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2640914,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2085872543,
            "count": 2640914,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4062987498,
            "variance": 0.1650786741
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97799.54727,
          2369316.264,
          3.730715919,
          -97303.62727,
          2369789.864,
          35.95071592
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97799.54727425387,
                2369316.264318711,
                3.730715919115895
              ],
              [
                -97799.54727425387,
                2369789.8643187108,
                3.730715919115895
              ],
              [
                -97303.62727425386,
                2369789.8643187108,
                35.95071591911589
              ],
              [
                -97303.62727425386,
                2369316.264318711,
                35.95071591911589
              ],
              [
                -97799.54727425387,
                2369316.264318711,
                3.730715919115895
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:06:54+00:00",
        "end_time": "2018-09-08T04:39:16+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2221.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2221.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2221.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2221.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6667362,
            71.30414272,
            3.730715919,
            -156.6527126,
            71.30867307,
            35.95071592
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66621799791105,
                  71.30414271520486,
                  3.730715919115895
                ],
                [
                  -156.66673617331097,
                  71.30849061162898,
                  3.730715919115895
                ],
                [
                  -156.653228161587,
                  71.30867306763444,
                  35.95071591911589
                ],
                [
                  -156.6527126053375,
                  71.30432513040753,
                  35.95071591911589
                ],
                [
                  -156.66621799791105,
                  71.30414271520486,
                  3.730715919115895
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2221.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2221.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:06:54Z",
            "pc:count": 2640914,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97578.07229,
                "count": 2640914,
                "maximum": -97303.62727,
                "minimum": -97799.54727,
                "name": "X",
                "position": 0,
                "stddev": 130.0789601,
                "variance": 16920.53586
              },
              {
                "average": 2369529.464,
                "count": 2640914,
                "maximum": 2369789.864,
                "minimum": 2369316.264,
                "name": "Y",
                "position": 1,
                "stddev": 130.651857,
                "variance": 17069.90775
              },
              {
                "average": 4.516143767,
                "count": 2640914,
                "maximum": 35.95071592,
                "minimum": 3.730715919,
                "name": "Z",
                "position": 2,
                "stddev": 0.50551975,
                "variance": 0.2555502176
              },
              {
                "average": 36656.97738,
                "count": 2640914,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14083.36723,
                "variance": 198341232.5
              },
              {
                "average": 1.000004544,
                "count": 2640914,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002131633757,
                "variance": 4.543862472e-06
              },
              {
                "average": 1.000009088,
                "count": 2640914,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00301457852,
                "variance": 9.087683651e-06
              },
              {
                "average": 0.5033931434,
                "count": 2640914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999885811,
                "variance": 0.2499885812
              },
              {
                "average": 0.000396453652,
                "count": 2640914,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01990720037,
                "variance": 0.0003962966266
              },
              {
                "average": 1.748150072,
                "count": 2640914,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.894607563,
                "variance": 3.589537818
              },
              {
                "average": 0.4828549152,
                "count": 2640914,
                "maximum": 16.3560009,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21692699,
                "variance": 104.3855971
              },
              {
                "average": 0.5232196126,
                "count": 2640914,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994606532,
                "variance": 0.2494609441
              },
              {
                "average": 410.555407,
                "count": 2640914,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9522853544,
                "variance": 0.9068473961
              },
              {
                "average": 220417616.6,
                "count": 2640914,
                "maximum": 220418414.8,
                "minimum": 220416756.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 529.8783423,
                "variance": 280771.0576
              },
              {
                "average": 0.5232196126,
                "count": 2640914,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994606532,
                "variance": 0.2494609441
              },
              {
                "average": 0,
                "count": 2640914,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2640914,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2640914,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2085872543,
                "count": 2640914,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4062987498,
                "variance": 0.1650786741
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97799.54727,
              2369316.264,
              3.730715919,
              -97303.62727,
              2369789.864,
              35.95071592
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97799.54727425387,
                    2369316.264318711,
                    3.730715919115895
                  ],
                  [
                    -97799.54727425387,
                    2369789.8643187108,
                    3.730715919115895
                  ],
                  [
                    -97303.62727425386,
                    2369789.8643187108,
                    35.95071591911589
                  ],
                  [
                    -97303.62727425386,
                    2369316.264318711,
                    35.95071591911589
                  ],
                  [
                    -97799.54727425387,
                    2369316.264318711,
                    3.730715919115895
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:06:54+00:00",
            "end_time": "2018-09-08T04:39:16+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2276.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6142501311312,
              71.31606430566927,
              2.59211538125885
            ],
            [
              -156.61475852561333,
              71.32041305598447,
              2.59211538125885
            ],
            [
              -156.60124126156293,
              71.32059198432648,
              68.87211538125885
            ],
            [
              -156.60073548988768,
              71.31624319396195,
              68.87211538125885
            ],
            [
              -156.6142501311312,
              71.31606430566927,
              2.59211538125885
            ]
          ]
        ]
      },
      "bbox": [
        -156.6147585,
        71.31606431,
        2.592115381,
        -156.6007355,
        71.32059198,
        68.87211538
      ],
      "properties": {
        "datetime": "2018-09-08T05:15:46Z",
        "pc:count": 3137409,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95596.38611,
            "count": 3137409,
            "maximum": -95347.26612,
            "minimum": -95843.24612,
            "name": "X",
            "position": 0,
            "stddev": 134.7414837,
            "variance": 18155.26743
          },
          {
            "average": 2370777.034,
            "count": 3137409,
            "maximum": 2371010.609,
            "minimum": 2370536.969,
            "name": "Y",
            "position": 1,
            "stddev": 129.8587373,
            "variance": 16863.29166
          },
          {
            "average": 4.309426828,
            "count": 3137409,
            "maximum": 68.87211538,
            "minimum": 2.592115381,
            "name": "Z",
            "position": 2,
            "stddev": 1.601310662,
            "variance": 2.564195835
          },
          {
            "average": 40001.50612,
            "count": 3137409,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 11556.89573,
            "variance": 133561838.8
          },
          {
            "average": 1.00000255,
            "count": 3137409,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001596830944,
            "variance": 2.549869064e-06
          },
          {
            "average": 1.0000051,
            "count": 3137409,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002258257099,
            "variance": 5.099725125e-06
          },
          {
            "average": 0.498602828,
            "count": 3137409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999981276,
            "variance": 0.2499981276
          },
          {
            "average": 0.000351882716,
            "count": 3137409,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01875523944,
            "variance": 0.0003517590066
          },
          {
            "average": 1.292870327,
            "count": 3137409,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4555261461,
            "variance": 0.2075040698
          },
          {
            "average": -0.1596114892,
            "count": 3137409,
            "maximum": 16.29000092,
            "minimum": -15.83399963,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.15981214,
            "variance": 103.2217828
          },
          {
            "average": 0.4728251879,
            "count": 3137409,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499261063,
            "variance": 0.249261609
          },
          {
            "average": 411.2884431,
            "count": 3137409,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9257774976,
            "variance": 0.8570639751
          },
          {
            "average": 220418028,
            "count": 3137409,
            "maximum": 220418946.6,
            "minimum": 220416722.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 511.0594688,
            "variance": 261181.7807
          },
          {
            "average": 0.4728251879,
            "count": 3137409,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499261063,
            "variance": 0.249261609
          },
          {
            "average": 0,
            "count": 3137409,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3137409,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3137409,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2052512121,
            "count": 3137409,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4038851371,
            "variance": 0.163123204
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95843.24612,
          2370536.969,
          2.592115381,
          -95347.26612,
          2371010.609,
          68.87211538
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95843.24611722193,
                2370536.968804578,
                2.59211538125885
              ],
              [
                -95843.24611722193,
                2371010.6088045775,
                2.59211538125885
              ],
              [
                -95347.26611722192,
                2371010.6088045775,
                68.87211538125885
              ],
              [
                -95347.26611722192,
                2370536.968804578,
                68.87211538125885
              ],
              [
                -95843.24611722193,
                2370536.968804578,
                2.59211538125885
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:15:46+00:00",
        "end_time": "2018-09-08T04:38:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2276.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2276.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2276.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2276.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6147585,
            71.31606431,
            2.592115381,
            -156.6007355,
            71.32059198,
            68.87211538
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6142501311312,
                  71.31606430566927,
                  2.59211538125885
                ],
                [
                  -156.61475852561333,
                  71.32041305598447,
                  2.59211538125885
                ],
                [
                  -156.60124126156293,
                  71.32059198432648,
                  68.87211538125885
                ],
                [
                  -156.60073548988768,
                  71.31624319396195,
                  68.87211538125885
                ],
                [
                  -156.6142501311312,
                  71.31606430566927,
                  2.59211538125885
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2276.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2276.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:15:46Z",
            "pc:count": 3137409,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95596.38611,
                "count": 3137409,
                "maximum": -95347.26612,
                "minimum": -95843.24612,
                "name": "X",
                "position": 0,
                "stddev": 134.7414837,
                "variance": 18155.26743
              },
              {
                "average": 2370777.034,
                "count": 3137409,
                "maximum": 2371010.609,
                "minimum": 2370536.969,
                "name": "Y",
                "position": 1,
                "stddev": 129.8587373,
                "variance": 16863.29166
              },
              {
                "average": 4.309426828,
                "count": 3137409,
                "maximum": 68.87211538,
                "minimum": 2.592115381,
                "name": "Z",
                "position": 2,
                "stddev": 1.601310662,
                "variance": 2.564195835
              },
              {
                "average": 40001.50612,
                "count": 3137409,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 11556.89573,
                "variance": 133561838.8
              },
              {
                "average": 1.00000255,
                "count": 3137409,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001596830944,
                "variance": 2.549869064e-06
              },
              {
                "average": 1.0000051,
                "count": 3137409,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002258257099,
                "variance": 5.099725125e-06
              },
              {
                "average": 0.498602828,
                "count": 3137409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999981276,
                "variance": 0.2499981276
              },
              {
                "average": 0.000351882716,
                "count": 3137409,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01875523944,
                "variance": 0.0003517590066
              },
              {
                "average": 1.292870327,
                "count": 3137409,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4555261461,
                "variance": 0.2075040698
              },
              {
                "average": -0.1596114892,
                "count": 3137409,
                "maximum": 16.29000092,
                "minimum": -15.83399963,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.15981214,
                "variance": 103.2217828
              },
              {
                "average": 0.4728251879,
                "count": 3137409,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499261063,
                "variance": 0.249261609
              },
              {
                "average": 411.2884431,
                "count": 3137409,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9257774976,
                "variance": 0.8570639751
              },
              {
                "average": 220418028,
                "count": 3137409,
                "maximum": 220418946.6,
                "minimum": 220416722.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 511.0594688,
                "variance": 261181.7807
              },
              {
                "average": 0.4728251879,
                "count": 3137409,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499261063,
                "variance": 0.249261609
              },
              {
                "average": 0,
                "count": 3137409,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3137409,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3137409,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2052512121,
                "count": 3137409,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4038851371,
                "variance": 0.163123204
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95843.24612,
              2370536.969,
              2.592115381,
              -95347.26612,
              2371010.609,
              68.87211538
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95843.24611722193,
                    2370536.968804578,
                    2.59211538125885
                  ],
                  [
                    -95843.24611722193,
                    2371010.6088045775,
                    2.59211538125885
                  ],
                  [
                    -95347.26611722192,
                    2371010.6088045775,
                    68.87211538125885
                  ],
                  [
                    -95347.26611722192,
                    2370536.968804578,
                    68.87211538125885
                  ],
                  [
                    -95843.24611722193,
                    2370536.968804578,
                    2.59211538125885
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:15:46+00:00",
            "end_time": "2018-09-08T04:38:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2395.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.52136067678737,
              71.36044918292741,
              0.834768452310087
            ],
            [
              -156.52185145088893,
              71.36479470759654,
              0.834768452310087
            ],
            [
              -156.5082973095607,
              71.36496743417801,
              72.05476845231009
            ],
            [
              -156.50780916818113,
              71.36062187077701,
              72.05476845231009
            ],
            [
              -156.52136067678737,
              71.36044918292741,
              0.834768452310087
            ]
          ]
        ]
      },
      "bbox": [
        -156.5218515,
        71.36044918,
        0.8347684523,
        -156.5078092,
        71.36496743,
        72.05476845
      ],
      "properties": {
        "datetime": "2018-09-08T04:37:06Z",
        "pc:count": 2481912,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91995.34606,
            "count": 2481912,
            "maximum": -91759.77194,
            "minimum": -92256.09194,
            "name": "X",
            "position": 0,
            "stddev": 132.6911401,
            "variance": 17606.93865
          },
          {
            "average": 2375455.571,
            "count": 2481912,
            "maximum": 2375704.666,
            "minimum": 2375231.546,
            "name": "Y",
            "position": 1,
            "stddev": 127.1236105,
            "variance": 16160.41235
          },
          {
            "average": 2.286628579,
            "count": 2481912,
            "maximum": 72.05476845,
            "minimum": 0.8347684523,
            "name": "Z",
            "position": 2,
            "stddev": 1.208278763,
            "variance": 1.459937568
          },
          {
            "average": 18044.65384,
            "count": 2481912,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8272.930235,
            "variance": 68441374.68
          },
          {
            "average": 1.000000806,
            "count": 2481912,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008976803546,
            "variance": 8.05830019e-07
          },
          {
            "average": 1.000001612,
            "count": 2481912,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001269511221,
            "variance": 1.611658739e-06
          },
          {
            "average": 0.4972158562,
            "count": 2481912,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999923492,
            "variance": 0.2499923493
          },
          {
            "average": 0.0004697990904,
            "count": 2481912,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02166976161,
            "variance": 0.0004695785684
          },
          {
            "average": 3.221789894,
            "count": 2481912,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.351926564,
            "variance": 11.23541169
          },
          {
            "average": 0.1506864924,
            "count": 2481912,
            "maximum": 16.29000092,
            "minimum": -15.96000004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.506214229,
            "variance": 90.36810897
          },
          {
            "average": 0.4335625115,
            "count": 2481912,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4955665032,
            "variance": 0.2455861591
          },
          {
            "average": 407.516275,
            "count": 2481912,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8933268658,
            "variance": 0.7980328891
          },
          {
            "average": 220415881.3,
            "count": 2481912,
            "maximum": 220416626.9,
            "minimum": 220415168,
            "name": "GpsTime",
            "position": 12,
            "stddev": 516.7331923,
            "variance": 267013.192
          },
          {
            "average": 0.4335625115,
            "count": 2481912,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4955665032,
            "variance": 0.2455861591
          },
          {
            "average": 0,
            "count": 2481912,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2481912,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2481912,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1969602468,
            "count": 2481912,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3977021143,
            "variance": 0.1581669717
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -92256.09194,
          2375231.546,
          0.8347684523,
          -91759.77194,
          2375704.666,
          72.05476845
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -92256.0919409213,
                2375231.545784542,
                0.834768452310087
              ],
              [
                -92256.0919409213,
                2375704.665784542,
                0.834768452310087
              ],
              [
                -91759.77194092129,
                2375704.665784542,
                72.05476845231009
              ],
              [
                -91759.77194092129,
                2375231.545784542,
                72.05476845231009
              ],
              [
                -92256.0919409213,
                2375231.545784542,
                0.834768452310087
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:37:06+00:00",
        "end_time": "2018-09-08T04:12:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2395.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2395.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2395.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2395.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5218515,
            71.36044918,
            0.8347684523,
            -156.5078092,
            71.36496743,
            72.05476845
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.52136067678737,
                  71.36044918292741,
                  0.834768452310087
                ],
                [
                  -156.52185145088893,
                  71.36479470759654,
                  0.834768452310087
                ],
                [
                  -156.5082973095607,
                  71.36496743417801,
                  72.05476845231009
                ],
                [
                  -156.50780916818113,
                  71.36062187077701,
                  72.05476845231009
                ],
                [
                  -156.52136067678737,
                  71.36044918292741,
                  0.834768452310087
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2395.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2395.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:37:06Z",
            "pc:count": 2481912,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91995.34606,
                "count": 2481912,
                "maximum": -91759.77194,
                "minimum": -92256.09194,
                "name": "X",
                "position": 0,
                "stddev": 132.6911401,
                "variance": 17606.93865
              },
              {
                "average": 2375455.571,
                "count": 2481912,
                "maximum": 2375704.666,
                "minimum": 2375231.546,
                "name": "Y",
                "position": 1,
                "stddev": 127.1236105,
                "variance": 16160.41235
              },
              {
                "average": 2.286628579,
                "count": 2481912,
                "maximum": 72.05476845,
                "minimum": 0.8347684523,
                "name": "Z",
                "position": 2,
                "stddev": 1.208278763,
                "variance": 1.459937568
              },
              {
                "average": 18044.65384,
                "count": 2481912,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8272.930235,
                "variance": 68441374.68
              },
              {
                "average": 1.000000806,
                "count": 2481912,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008976803546,
                "variance": 8.05830019e-07
              },
              {
                "average": 1.000001612,
                "count": 2481912,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001269511221,
                "variance": 1.611658739e-06
              },
              {
                "average": 0.4972158562,
                "count": 2481912,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999923492,
                "variance": 0.2499923493
              },
              {
                "average": 0.0004697990904,
                "count": 2481912,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02166976161,
                "variance": 0.0004695785684
              },
              {
                "average": 3.221789894,
                "count": 2481912,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.351926564,
                "variance": 11.23541169
              },
              {
                "average": 0.1506864924,
                "count": 2481912,
                "maximum": 16.29000092,
                "minimum": -15.96000004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.506214229,
                "variance": 90.36810897
              },
              {
                "average": 0.4335625115,
                "count": 2481912,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4955665032,
                "variance": 0.2455861591
              },
              {
                "average": 407.516275,
                "count": 2481912,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8933268658,
                "variance": 0.7980328891
              },
              {
                "average": 220415881.3,
                "count": 2481912,
                "maximum": 220416626.9,
                "minimum": 220415168,
                "name": "GpsTime",
                "position": 12,
                "stddev": 516.7331923,
                "variance": 267013.192
              },
              {
                "average": 0.4335625115,
                "count": 2481912,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4955665032,
                "variance": 0.2455861591
              },
              {
                "average": 0,
                "count": 2481912,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2481912,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2481912,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1969602468,
                "count": 2481912,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3977021143,
                "variance": 0.1581669717
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -92256.09194,
              2375231.546,
              0.8347684523,
              -91759.77194,
              2375704.666,
              72.05476845
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -92256.0919409213,
                    2375231.545784542,
                    0.834768452310087
                  ],
                  [
                    -92256.0919409213,
                    2375704.665784542,
                    0.834768452310087
                  ],
                  [
                    -91759.77194092129,
                    2375704.665784542,
                    72.05476845231009
                  ],
                  [
                    -91759.77194092129,
                    2375231.545784542,
                    72.05476845231009
                  ],
                  [
                    -92256.0919409213,
                    2375231.545784542,
                    0.834768452310087
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:37:06+00:00",
            "end_time": "2018-09-08T04:12:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2353.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56108950404365,
              71.34389050530937,
              0.879251451546428
            ],
            [
              -156.56117289894127,
              71.34461801935069,
              0.879251451546428
            ],
            [
              -156.55790374770743,
              71.34466044942249,
              1.339251451546428
            ],
            [
              -156.55782045904658,
              71.34393293378984,
              1.339251451546428
            ],
            [
              -156.56108950404365,
              71.34389050530937,
              0.879251451546428
            ]
          ]
        ]
      },
      "bbox": [
        -156.5611729,
        71.34389051,
        0.8792514515,
        -156.5578205,
        71.34466045,
        1.339251452
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:52Z",
        "pc:count": 35510,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93736.01504,
            "count": 35510,
            "maximum": -93658.68915,
            "minimum": -93778.50915,
            "name": "X",
            "position": 0,
            "stddev": 27.8683669,
            "variance": 776.6458736
          },
          {
            "average": 2373537.871,
            "count": 35510,
            "maximum": 2373566.071,
            "minimum": 2373486.851,
            "name": "Y",
            "position": 1,
            "stddev": 17.80555636,
            "variance": 317.0378374
          },
          {
            "average": 1.10874061,
            "count": 35510,
            "maximum": 1.339251452,
            "minimum": 0.8792514515,
            "name": "Z",
            "position": 2,
            "stddev": 0.0516591525,
            "variance": 0.002668668037
          },
          {
            "average": 13837.78896,
            "count": 35510,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10828.15723,
            "variance": 117248988.9
          },
          {
            "average": 1,
            "count": 35510,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 35510,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5194593072,
            "count": 35510,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499628227,
            "variance": 0.2496283652
          },
          {
            "average": 0,
            "count": 35510,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 8.159391721,
            "count": 35510,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.684045421,
            "variance": 2.83600898
          },
          {
            "average": -5.674616672,
            "count": 35510,
            "maximum": 14.84399986,
            "minimum": -9.456000328,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 2.415253613,
            "variance": 5.833450015
          },
          {
            "average": 0.4738101943,
            "count": 35510,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993206537,
            "variance": 0.2493211152
          },
          {
            "average": 408.55804,
            "count": 35510,
            "maximum": 410,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5095024706,
            "variance": 0.2595927676
          },
          {
            "average": 220416484.8,
            "count": 35510,
            "maximum": 220417392.3,
            "minimum": 220416250.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 218.3107782,
            "variance": 47659.59589
          },
          {
            "average": 0.4738101943,
            "count": 35510,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993206537,
            "variance": 0.2493211152
          },
          {
            "average": 0,
            "count": 35510,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 35510,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 35510,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.006477048719,
            "count": 35510,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.08022018314,
            "variance": 0.006435277783
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93778.50915,
          2373486.851,
          0.8792514515,
          -93658.68915,
          2373566.071,
          1.339251452
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93778.50914765056,
                2373486.8508366323,
                0.879251451546428
              ],
              [
                -93778.50914765056,
                2373566.070836632,
                0.879251451546428
              ],
              [
                -93658.68914765056,
                2373566.070836632,
                1.339251451546428
              ],
              [
                -93658.68914765056,
                2373486.8508366323,
                1.339251451546428
              ],
              [
                -93778.50914765056,
                2373486.8508366323,
                0.879251451546428
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:52+00:00",
        "end_time": "2018-09-08T04:30:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2353.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2353.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2353.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2353.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5611729,
            71.34389051,
            0.8792514515,
            -156.5578205,
            71.34466045,
            1.339251452
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56108950404365,
                  71.34389050530937,
                  0.879251451546428
                ],
                [
                  -156.56117289894127,
                  71.34461801935069,
                  0.879251451546428
                ],
                [
                  -156.55790374770743,
                  71.34466044942249,
                  1.339251451546428
                ],
                [
                  -156.55782045904658,
                  71.34393293378984,
                  1.339251451546428
                ],
                [
                  -156.56108950404365,
                  71.34389050530937,
                  0.879251451546428
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2353.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2353.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:52Z",
            "pc:count": 35510,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93736.01504,
                "count": 35510,
                "maximum": -93658.68915,
                "minimum": -93778.50915,
                "name": "X",
                "position": 0,
                "stddev": 27.8683669,
                "variance": 776.6458736
              },
              {
                "average": 2373537.871,
                "count": 35510,
                "maximum": 2373566.071,
                "minimum": 2373486.851,
                "name": "Y",
                "position": 1,
                "stddev": 17.80555636,
                "variance": 317.0378374
              },
              {
                "average": 1.10874061,
                "count": 35510,
                "maximum": 1.339251452,
                "minimum": 0.8792514515,
                "name": "Z",
                "position": 2,
                "stddev": 0.0516591525,
                "variance": 0.002668668037
              },
              {
                "average": 13837.78896,
                "count": 35510,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10828.15723,
                "variance": 117248988.9
              },
              {
                "average": 1,
                "count": 35510,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 35510,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5194593072,
                "count": 35510,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499628227,
                "variance": 0.2496283652
              },
              {
                "average": 0,
                "count": 35510,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 8.159391721,
                "count": 35510,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.684045421,
                "variance": 2.83600898
              },
              {
                "average": -5.674616672,
                "count": 35510,
                "maximum": 14.84399986,
                "minimum": -9.456000328,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 2.415253613,
                "variance": 5.833450015
              },
              {
                "average": 0.4738101943,
                "count": 35510,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993206537,
                "variance": 0.2493211152
              },
              {
                "average": 408.55804,
                "count": 35510,
                "maximum": 410,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5095024706,
                "variance": 0.2595927676
              },
              {
                "average": 220416484.8,
                "count": 35510,
                "maximum": 220417392.3,
                "minimum": 220416250.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 218.3107782,
                "variance": 47659.59589
              },
              {
                "average": 0.4738101943,
                "count": 35510,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993206537,
                "variance": 0.2493211152
              },
              {
                "average": 0,
                "count": 35510,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 35510,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 35510,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.006477048719,
                "count": 35510,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.08022018314,
                "variance": 0.006435277783
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93778.50915,
              2373486.851,
              0.8792514515,
              -93658.68915,
              2373566.071,
              1.339251452
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93778.50914765056,
                    2373486.8508366323,
                    0.879251451546428
                  ],
                  [
                    -93778.50914765056,
                    2373566.070836632,
                    0.879251451546428
                  ],
                  [
                    -93658.68914765056,
                    2373566.070836632,
                    1.339251451546428
                  ],
                  [
                    -93658.68914765056,
                    2373486.8508366323,
                    1.339251451546428
                  ],
                  [
                    -93778.50914765056,
                    2373486.8508366323,
                    0.879251451546428
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:52+00:00",
            "end_time": "2018-09-08T04:30:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2444.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.494886398054,
              71.38098437039417,
              0.914308445279602
            ],
            [
              -156.49494385938064,
              71.38149824290211,
              0.914308445279602
            ],
            [
              -156.49414090589508,
              71.38150838529465,
              1.494308445279602
            ],
            [
              -156.49408346302656,
              71.38099451251747,
              1.494308445279602
            ],
            [
              -156.494886398054,
              71.38098437039417,
              0.914308445279602
            ]
          ]
        ]
      },
      "bbox": [
        -156.4949439,
        71.38098437,
        0.9143084453,
        -156.4940835,
        71.38150839,
        1.494308445
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:28Z",
        "pc:count": 5891,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91185.68952,
            "count": 5891,
            "maximum": -91174.57433,
            "minimum": -91203.95433,
            "name": "X",
            "position": 0,
            "stddev": 6.582611702,
            "variance": 43.33077682
          },
          {
            "average": 2377446.467,
            "count": 5891,
            "maximum": 2377483.363,
            "minimum": 2377427.423,
            "name": "Y",
            "position": 1,
            "stddev": 13.13176673,
            "variance": 172.4432975
          },
          {
            "average": 1.164493473,
            "count": 5891,
            "maximum": 1.494308445,
            "minimum": 0.9143084453,
            "name": "Z",
            "position": 2,
            "stddev": 0.08777624192,
            "variance": 0.007704668645
          },
          {
            "average": 13076.88796,
            "count": 5891,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9218.025504,
            "variance": 84971994.2
          },
          {
            "average": 1,
            "count": 5891,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5891,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5146834154,
            "count": 5891,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998267755,
            "variance": 0.2498268055
          },
          {
            "average": 0,
            "count": 5891,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 7.289254795,
            "count": 5891,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.707817703,
            "variance": 7.332276711
          },
          {
            "average": -4.259022234,
            "count": 5891,
            "maximum": 15.65400028,
            "minimum": -9.918000221,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.139076882,
            "variance": 37.68826497
          },
          {
            "average": 0.5331862163,
            "count": 5891,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989398089,
            "variance": 0.2489409329
          },
          {
            "average": 404.652351,
            "count": 5891,
            "maximum": 406,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6232636237,
            "variance": 0.3884575447
          },
          {
            "average": 220414284.1,
            "count": 5891,
            "maximum": 220415208.8,
            "minimum": 220414076.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 296.331954,
            "variance": 87812.62694
          },
          {
            "average": 0.5331862163,
            "count": 5891,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989398089,
            "variance": 0.2489409329
          },
          {
            "average": 0,
            "count": 5891,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5891,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5891,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0808012222,
            "count": 5891,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2725527373,
            "variance": 0.07428499461
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91203.95433,
          2377427.423,
          0.9143084453,
          -91174.57433,
          2377483.363,
          1.494308445
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91203.95433464665,
                2377427.4232461085,
                0.914308445279602
              ],
              [
                -91203.95433464665,
                2377483.363246109,
                0.914308445279602
              ],
              [
                -91174.57433464665,
                2377483.363246109,
                1.494308445279602
              ],
              [
                -91174.57433464665,
                2377427.4232461085,
                1.494308445279602
              ],
              [
                -91203.95433464665,
                2377427.4232461085,
                0.914308445279602
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:28+00:00",
        "end_time": "2018-09-08T03:54:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2444.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2444.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2444.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2444.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4949439,
            71.38098437,
            0.9143084453,
            -156.4940835,
            71.38150839,
            1.494308445
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.494886398054,
                  71.38098437039417,
                  0.914308445279602
                ],
                [
                  -156.49494385938064,
                  71.38149824290211,
                  0.914308445279602
                ],
                [
                  -156.49414090589508,
                  71.38150838529465,
                  1.494308445279602
                ],
                [
                  -156.49408346302656,
                  71.38099451251747,
                  1.494308445279602
                ],
                [
                  -156.494886398054,
                  71.38098437039417,
                  0.914308445279602
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2444.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2444.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:28Z",
            "pc:count": 5891,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91185.68952,
                "count": 5891,
                "maximum": -91174.57433,
                "minimum": -91203.95433,
                "name": "X",
                "position": 0,
                "stddev": 6.582611702,
                "variance": 43.33077682
              },
              {
                "average": 2377446.467,
                "count": 5891,
                "maximum": 2377483.363,
                "minimum": 2377427.423,
                "name": "Y",
                "position": 1,
                "stddev": 13.13176673,
                "variance": 172.4432975
              },
              {
                "average": 1.164493473,
                "count": 5891,
                "maximum": 1.494308445,
                "minimum": 0.9143084453,
                "name": "Z",
                "position": 2,
                "stddev": 0.08777624192,
                "variance": 0.007704668645
              },
              {
                "average": 13076.88796,
                "count": 5891,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9218.025504,
                "variance": 84971994.2
              },
              {
                "average": 1,
                "count": 5891,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5891,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5146834154,
                "count": 5891,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998267755,
                "variance": 0.2498268055
              },
              {
                "average": 0,
                "count": 5891,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 7.289254795,
                "count": 5891,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.707817703,
                "variance": 7.332276711
              },
              {
                "average": -4.259022234,
                "count": 5891,
                "maximum": 15.65400028,
                "minimum": -9.918000221,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.139076882,
                "variance": 37.68826497
              },
              {
                "average": 0.5331862163,
                "count": 5891,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989398089,
                "variance": 0.2489409329
              },
              {
                "average": 404.652351,
                "count": 5891,
                "maximum": 406,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6232636237,
                "variance": 0.3884575447
              },
              {
                "average": 220414284.1,
                "count": 5891,
                "maximum": 220415208.8,
                "minimum": 220414076.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 296.331954,
                "variance": 87812.62694
              },
              {
                "average": 0.5331862163,
                "count": 5891,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989398089,
                "variance": 0.2489409329
              },
              {
                "average": 0,
                "count": 5891,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5891,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5891,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0808012222,
                "count": 5891,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2725527373,
                "variance": 0.07428499461
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91203.95433,
              2377427.423,
              0.9143084453,
              -91174.57433,
              2377483.363,
              1.494308445
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91203.95433464665,
                    2377427.4232461085,
                    0.914308445279602
                  ],
                  [
                    -91203.95433464665,
                    2377483.363246109,
                    0.914308445279602
                  ],
                  [
                    -91174.57433464665,
                    2377483.363246109,
                    1.494308445279602
                  ],
                  [
                    -91174.57433464665,
                    2377427.4232461085,
                    1.494308445279602
                  ],
                  [
                    -91203.95433464665,
                    2377427.4232461085,
                    0.914308445279602
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:28+00:00",
            "end_time": "2018-09-08T03:54:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2418.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.49510528099893,
              71.36844085429222,
              0.759697891487662
            ],
            [
              -156.49559122353475,
              71.37278760021199,
              0.759697891487662
            ],
            [
              -156.48203038958655,
              71.3729585539713,
              453.55969789148764
            ],
            [
              -156.48154708269016,
              71.36861176968871,
              453.55969789148764
            ],
            [
              -156.49510528099893,
              71.36844085429222,
              0.759697891487662
            ]
          ]
        ]
      },
      "bbox": [
        -156.4955912,
        71.36844085,
        0.7596978915,
        -156.4815471,
        71.37295855,
        453.5596979
      ],
      "properties": {
        "datetime": "2018-09-08T04:36:42Z",
        "pc:count": 2288598,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91039.97461,
            "count": 2288598,
            "maximum": -90766.82824,
            "minimum": -91263.20824,
            "name": "X",
            "position": 0,
            "stddev": 132.6529816,
            "variance": 17596.81353
          },
          {
            "average": 2376314.097,
            "count": 2288598,
            "maximum": 2376537.326,
            "minimum": 2376064.106,
            "name": "Y",
            "position": 1,
            "stddev": 127.3238976,
            "variance": 16211.3749
          },
          {
            "average": 2.076257143,
            "count": 2288598,
            "maximum": 453.5596979,
            "minimum": 0.7596978915,
            "name": "Z",
            "position": 2,
            "stddev": 1.290704824,
            "variance": 1.665918943
          },
          {
            "average": 16741.99675,
            "count": 2288598,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8505.627087,
            "variance": 72345692.15
          },
          {
            "average": 1.000000437,
            "count": 2288598,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006610209789,
            "variance": 4.369487346e-07
          },
          {
            "average": 1.000000874,
            "count": 2288598,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009348246291,
            "variance": 8.738970873e-07
          },
          {
            "average": 0.4962514168,
            "count": 2288598,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999860572,
            "variance": 0.2499860574
          },
          {
            "average": 0.0004190338364,
            "count": 2288598,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02046603113,
            "variance": 0.0004188584301
          },
          {
            "average": 4.181593272,
            "count": 2288598,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.604216382,
            "variance": 12.99037573
          },
          {
            "average": 1.226913542,
            "count": 2288598,
            "maximum": 16.24799919,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.290144075,
            "variance": 86.30677694
          },
          {
            "average": 0.4779056872,
            "count": 2288598,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995117119,
            "variance": 0.2495119504
          },
          {
            "average": 407.2537492,
            "count": 2288598,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8270634917,
            "variance": 0.6840340194
          },
          {
            "average": 220415781,
            "count": 2288598,
            "maximum": 220416602.9,
            "minimum": 220415190.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 499.2210368,
            "variance": 249221.6435
          },
          {
            "average": 0.4779056872,
            "count": 2288598,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995117119,
            "variance": 0.2495119504
          },
          {
            "average": 0,
            "count": 2288598,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2288598,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2288598,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1300184655,
            "count": 2288598,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3363238224,
            "variance": 0.1131137135
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91263.20824,
          2376064.106,
          0.7596978915,
          -90766.82824,
          2376537.326,
          453.5596979
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91263.20823747251,
                2376064.105961067,
                0.759697891487662
              ],
              [
                -91263.20823747251,
                2376537.325961067,
                0.759697891487662
              ],
              [
                -90766.82823747251,
                2376537.325961067,
                453.55969789148764
              ],
              [
                -90766.82823747251,
                2376064.105961067,
                453.55969789148764
              ],
              [
                -91263.20823747251,
                2376064.105961067,
                0.759697891487662
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:36:42+00:00",
        "end_time": "2018-09-08T04:13:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2418.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2418.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2418.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2418.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4955912,
            71.36844085,
            0.7596978915,
            -156.4815471,
            71.37295855,
            453.5596979
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.49510528099893,
                  71.36844085429222,
                  0.759697891487662
                ],
                [
                  -156.49559122353475,
                  71.37278760021199,
                  0.759697891487662
                ],
                [
                  -156.48203038958655,
                  71.3729585539713,
                  453.55969789148764
                ],
                [
                  -156.48154708269016,
                  71.36861176968871,
                  453.55969789148764
                ],
                [
                  -156.49510528099893,
                  71.36844085429222,
                  0.759697891487662
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2418.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2418.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:36:42Z",
            "pc:count": 2288598,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91039.97461,
                "count": 2288598,
                "maximum": -90766.82824,
                "minimum": -91263.20824,
                "name": "X",
                "position": 0,
                "stddev": 132.6529816,
                "variance": 17596.81353
              },
              {
                "average": 2376314.097,
                "count": 2288598,
                "maximum": 2376537.326,
                "minimum": 2376064.106,
                "name": "Y",
                "position": 1,
                "stddev": 127.3238976,
                "variance": 16211.3749
              },
              {
                "average": 2.076257143,
                "count": 2288598,
                "maximum": 453.5596979,
                "minimum": 0.7596978915,
                "name": "Z",
                "position": 2,
                "stddev": 1.290704824,
                "variance": 1.665918943
              },
              {
                "average": 16741.99675,
                "count": 2288598,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8505.627087,
                "variance": 72345692.15
              },
              {
                "average": 1.000000437,
                "count": 2288598,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006610209789,
                "variance": 4.369487346e-07
              },
              {
                "average": 1.000000874,
                "count": 2288598,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009348246291,
                "variance": 8.738970873e-07
              },
              {
                "average": 0.4962514168,
                "count": 2288598,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999860572,
                "variance": 0.2499860574
              },
              {
                "average": 0.0004190338364,
                "count": 2288598,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02046603113,
                "variance": 0.0004188584301
              },
              {
                "average": 4.181593272,
                "count": 2288598,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.604216382,
                "variance": 12.99037573
              },
              {
                "average": 1.226913542,
                "count": 2288598,
                "maximum": 16.24799919,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.290144075,
                "variance": 86.30677694
              },
              {
                "average": 0.4779056872,
                "count": 2288598,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995117119,
                "variance": 0.2495119504
              },
              {
                "average": 407.2537492,
                "count": 2288598,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8270634917,
                "variance": 0.6840340194
              },
              {
                "average": 220415781,
                "count": 2288598,
                "maximum": 220416602.9,
                "minimum": 220415190.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 499.2210368,
                "variance": 249221.6435
              },
              {
                "average": 0.4779056872,
                "count": 2288598,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995117119,
                "variance": 0.2495119504
              },
              {
                "average": 0,
                "count": 2288598,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2288598,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2288598,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1300184655,
                "count": 2288598,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3363238224,
                "variance": 0.1131137135
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91263.20824,
              2376064.106,
              0.7596978915,
              -90766.82824,
              2376537.326,
              453.5596979
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91263.20823747251,
                    2376064.105961067,
                    0.759697891487662
                  ],
                  [
                    -91263.20823747251,
                    2376537.325961067,
                    0.759697891487662
                  ],
                  [
                    -90766.82823747251,
                    2376537.325961067,
                    453.55969789148764
                  ],
                  [
                    -90766.82823747251,
                    2376064.105961067,
                    453.55969789148764
                  ],
                  [
                    -91263.20823747251,
                    2376064.105961067,
                    0.759697891487662
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:36:42+00:00",
            "end_time": "2018-09-08T04:13:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2445.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4941457357939,
              71.38072929933213,
              0.79235702927959
            ],
            [
              -156.49462056196938,
              71.38497628249632,
              0.79235702927959
            ],
            [
              -156.48105832817654,
              71.38514710811329,
              6.112357029279591
            ],
            [
              -156.4805860786197,
              71.38090008746816,
              6.112357029279591
            ],
            [
              -156.4941457357939,
              71.38072929933213,
              0.79235702927959
            ]
          ]
        ]
      },
      "bbox": [
        -156.4946206,
        71.3807293,
        0.7923570293,
        -156.4805861,
        71.38514711,
        6.112357029
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:38Z",
        "pc:count": 1655315,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90876.21895,
            "count": 1655315,
            "maximum": -90681.773,
            "minimum": -91177.933,
            "name": "X",
            "position": 0,
            "stddev": 123.7010225,
            "variance": 15301.94296
          },
          {
            "average": 2377612.719,
            "count": 1655315,
            "maximum": 2377860.998,
            "minimum": 2377398.678,
            "name": "Y",
            "position": 1,
            "stddev": 123.1494803,
            "variance": 15165.7945
          },
          {
            "average": 1.62142566,
            "count": 1655315,
            "maximum": 6.112357029,
            "minimum": 0.7923570293,
            "name": "Z",
            "position": 2,
            "stddev": 0.7379282801,
            "variance": 0.5445381466
          },
          {
            "average": 16476.23573,
            "count": 1655315,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9404.745153,
            "variance": 88449231.4
          },
          {
            "average": 1.000004229,
            "count": 1655315,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002056401479,
            "variance": 4.228787045e-06
          },
          {
            "average": 1.000008458,
            "count": 1655315,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002908184713,
            "variance": 8.457538324e-06
          },
          {
            "average": 0.5056240051,
            "count": 1655315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999685206,
            "variance": 0.2499685216
          },
          {
            "average": 0.0005461196207,
            "count": 1655315,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02336282739,
            "variance": 0.0005458217038
          },
          {
            "average": 5.295984148,
            "count": 1655315,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.669365025,
            "variance": 13.46423969
          },
          {
            "average": -1.688206213,
            "count": 1655315,
            "maximum": 16.31399918,
            "minimum": -15.73799992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.920820424,
            "variance": 79.58103703
          },
          {
            "average": 0.4932311977,
            "count": 1655315,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999543322,
            "variance": 0.2499543343
          },
          {
            "average": 404.802254,
            "count": 1655315,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7749721008,
            "variance": 0.600581757
          },
          {
            "average": 220414393.5,
            "count": 1655315,
            "maximum": 220415218.2,
            "minimum": 220413193.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 446.2708618,
            "variance": 199157.6821
          },
          {
            "average": 0.4932311977,
            "count": 1655315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999543322,
            "variance": 0.2499543343
          },
          {
            "average": 0,
            "count": 1655315,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1655315,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1655315,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1299583463,
            "count": 1655315,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.336257703,
            "variance": 0.1130692428
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91177.933,
          2377398.678,
          0.7923570293,
          -90681.773,
          2377860.998,
          6.112357029
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91177.9329975504,
                2377398.6783561623,
                0.79235702927959
              ],
              [
                -91177.9329975504,
                2377860.9983561626,
                0.79235702927959
              ],
              [
                -90681.77299755039,
                2377860.9983561626,
                6.112357029279591
              ],
              [
                -90681.77299755039,
                2377398.6783561623,
                6.112357029279591
              ],
              [
                -91177.9329975504,
                2377398.6783561623,
                0.79235702927959
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:38+00:00",
        "end_time": "2018-09-08T03:39:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2445.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2445.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2445.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2445.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4946206,
            71.3807293,
            0.7923570293,
            -156.4805861,
            71.38514711,
            6.112357029
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4941457357939,
                  71.38072929933213,
                  0.79235702927959
                ],
                [
                  -156.49462056196938,
                  71.38497628249632,
                  0.79235702927959
                ],
                [
                  -156.48105832817654,
                  71.38514710811329,
                  6.112357029279591
                ],
                [
                  -156.4805860786197,
                  71.38090008746816,
                  6.112357029279591
                ],
                [
                  -156.4941457357939,
                  71.38072929933213,
                  0.79235702927959
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2445.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2445.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:38Z",
            "pc:count": 1655315,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90876.21895,
                "count": 1655315,
                "maximum": -90681.773,
                "minimum": -91177.933,
                "name": "X",
                "position": 0,
                "stddev": 123.7010225,
                "variance": 15301.94296
              },
              {
                "average": 2377612.719,
                "count": 1655315,
                "maximum": 2377860.998,
                "minimum": 2377398.678,
                "name": "Y",
                "position": 1,
                "stddev": 123.1494803,
                "variance": 15165.7945
              },
              {
                "average": 1.62142566,
                "count": 1655315,
                "maximum": 6.112357029,
                "minimum": 0.7923570293,
                "name": "Z",
                "position": 2,
                "stddev": 0.7379282801,
                "variance": 0.5445381466
              },
              {
                "average": 16476.23573,
                "count": 1655315,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9404.745153,
                "variance": 88449231.4
              },
              {
                "average": 1.000004229,
                "count": 1655315,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002056401479,
                "variance": 4.228787045e-06
              },
              {
                "average": 1.000008458,
                "count": 1655315,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002908184713,
                "variance": 8.457538324e-06
              },
              {
                "average": 0.5056240051,
                "count": 1655315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999685206,
                "variance": 0.2499685216
              },
              {
                "average": 0.0005461196207,
                "count": 1655315,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02336282739,
                "variance": 0.0005458217038
              },
              {
                "average": 5.295984148,
                "count": 1655315,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.669365025,
                "variance": 13.46423969
              },
              {
                "average": -1.688206213,
                "count": 1655315,
                "maximum": 16.31399918,
                "minimum": -15.73799992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.920820424,
                "variance": 79.58103703
              },
              {
                "average": 0.4932311977,
                "count": 1655315,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999543322,
                "variance": 0.2499543343
              },
              {
                "average": 404.802254,
                "count": 1655315,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7749721008,
                "variance": 0.600581757
              },
              {
                "average": 220414393.5,
                "count": 1655315,
                "maximum": 220415218.2,
                "minimum": 220413193.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 446.2708618,
                "variance": 199157.6821
              },
              {
                "average": 0.4932311977,
                "count": 1655315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999543322,
                "variance": 0.2499543343
              },
              {
                "average": 0,
                "count": 1655315,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1655315,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1655315,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1299583463,
                "count": 1655315,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.336257703,
                "variance": 0.1130692428
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91177.933,
              2377398.678,
              0.7923570293,
              -90681.773,
              2377860.998,
              6.112357029
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91177.9329975504,
                    2377398.6783561623,
                    0.79235702927959
                  ],
                  [
                    -91177.9329975504,
                    2377860.9983561626,
                    0.79235702927959
                  ],
                  [
                    -90681.77299755039,
                    2377860.9983561626,
                    6.112357029279591
                  ],
                  [
                    -90681.77299755039,
                    2377398.6783561623,
                    6.112357029279591
                  ],
                  [
                    -91177.9329975504,
                    2377398.6783561623,
                    0.79235702927959
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:38+00:00",
            "end_time": "2018-09-08T03:39:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2412.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.39293953757883,
              71.36349957164012,
              0.925532288669556
            ],
            [
              -156.39340572453065,
              71.36784862132293,
              0.925532288669556
            ],
            [
              -156.37984931069346,
              71.36801252733636,
              4.425532288669556
            ],
            [
              -156.37938575972214,
              71.36366344086332,
              4.425532288669556
            ],
            [
              -156.39293953757883,
              71.36349957164012,
              0.925532288669556
            ]
          ]
        ]
      },
      "bbox": [
        -156.3934057,
        71.36349957,
        0.9255322887,
        -156.3793858,
        71.36801253,
        4.425532289
      ],
      "properties": {
        "datetime": "2018-09-08T05:48:57Z",
        "pc:count": 1870097,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87305.87253,
            "count": 1870097,
            "maximum": -87051.02045,
            "minimum": -87547.32045,
            "name": "X",
            "position": 0,
            "stddev": 134.3101391,
            "variance": 18039.21346
          },
          {
            "average": 2375603.253,
            "count": 1870097,
            "maximum": 2375862.807,
            "minimum": 2375389.347,
            "name": "Y",
            "position": 1,
            "stddev": 126.1242707,
            "variance": 15907.33166
          },
          {
            "average": 1.584242634,
            "count": 1870097,
            "maximum": 4.425532289,
            "minimum": 0.9255322887,
            "name": "Z",
            "position": 2,
            "stddev": 0.7233871973,
            "variance": 0.5232890373
          },
          {
            "average": 17508.14982,
            "count": 1870097,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11161.08305,
            "variance": 124569774.9
          },
          {
            "average": 1.000000535,
            "count": 1870097,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007312534587,
            "variance": 5.347316209e-07
          },
          {
            "average": 1.000001069,
            "count": 1870097,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001034148282,
            "variance": 1.06946267e-06
          },
          {
            "average": 0.497231427,
            "count": 1870097,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999924686,
            "variance": 0.2499924687
          },
          {
            "average": 0.000610663511,
            "count": 1870097,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02470406702,
            "variance": 0.0006102909275
          },
          {
            "average": 6.033684349,
            "count": 1870097,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.55779779,
            "variance": 12.65792511
          },
          {
            "average": 0.8806421871,
            "count": 1870097,
            "maximum": 16.35000038,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.92528234,
            "variance": 62.81010016
          },
          {
            "average": 0.4744497211,
            "count": 1870097,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49934689,
            "variance": 0.2493473166
          },
          {
            "average": 415.2006725,
            "count": 1870097,
            "maximum": 417,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7510146748,
            "variance": 0.5640230418
          },
          {
            "average": 220420126.4,
            "count": 1870097,
            "maximum": 220420937.2,
            "minimum": 220418778.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 468.8041135,
            "variance": 219777.2968
          },
          {
            "average": 0.4744497211,
            "count": 1870097,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49934689,
            "variance": 0.2493473166
          },
          {
            "average": 0,
            "count": 1870097,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1870097,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1870097,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08998838028,
            "count": 1870097,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2861651892,
            "variance": 0.08189051549
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87547.32045,
          2375389.347,
          0.9255322887,
          -87051.02045,
          2375862.807,
          4.425532289
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87547.32045451934,
                2375389.346876428,
                0.925532288669556
              ],
              [
                -87547.32045451934,
                2375862.806876428,
                0.925532288669556
              ],
              [
                -87051.02045451936,
                2375862.806876428,
                4.425532288669556
              ],
              [
                -87051.02045451936,
                2375389.346876428,
                4.425532288669556
              ],
              [
                -87547.32045451934,
                2375389.346876428,
                0.925532288669556
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:48:57+00:00",
        "end_time": "2018-09-08T05:12:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2412.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2412.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2412.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2412.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3934057,
            71.36349957,
            0.9255322887,
            -156.3793858,
            71.36801253,
            4.425532289
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.39293953757883,
                  71.36349957164012,
                  0.925532288669556
                ],
                [
                  -156.39340572453065,
                  71.36784862132293,
                  0.925532288669556
                ],
                [
                  -156.37984931069346,
                  71.36801252733636,
                  4.425532288669556
                ],
                [
                  -156.37938575972214,
                  71.36366344086332,
                  4.425532288669556
                ],
                [
                  -156.39293953757883,
                  71.36349957164012,
                  0.925532288669556
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2412.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2412.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:48:57Z",
            "pc:count": 1870097,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87305.87253,
                "count": 1870097,
                "maximum": -87051.02045,
                "minimum": -87547.32045,
                "name": "X",
                "position": 0,
                "stddev": 134.3101391,
                "variance": 18039.21346
              },
              {
                "average": 2375603.253,
                "count": 1870097,
                "maximum": 2375862.807,
                "minimum": 2375389.347,
                "name": "Y",
                "position": 1,
                "stddev": 126.1242707,
                "variance": 15907.33166
              },
              {
                "average": 1.584242634,
                "count": 1870097,
                "maximum": 4.425532289,
                "minimum": 0.9255322887,
                "name": "Z",
                "position": 2,
                "stddev": 0.7233871973,
                "variance": 0.5232890373
              },
              {
                "average": 17508.14982,
                "count": 1870097,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11161.08305,
                "variance": 124569774.9
              },
              {
                "average": 1.000000535,
                "count": 1870097,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007312534587,
                "variance": 5.347316209e-07
              },
              {
                "average": 1.000001069,
                "count": 1870097,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001034148282,
                "variance": 1.06946267e-06
              },
              {
                "average": 0.497231427,
                "count": 1870097,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999924686,
                "variance": 0.2499924687
              },
              {
                "average": 0.000610663511,
                "count": 1870097,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02470406702,
                "variance": 0.0006102909275
              },
              {
                "average": 6.033684349,
                "count": 1870097,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.55779779,
                "variance": 12.65792511
              },
              {
                "average": 0.8806421871,
                "count": 1870097,
                "maximum": 16.35000038,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.92528234,
                "variance": 62.81010016
              },
              {
                "average": 0.4744497211,
                "count": 1870097,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49934689,
                "variance": 0.2493473166
              },
              {
                "average": 415.2006725,
                "count": 1870097,
                "maximum": 417,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7510146748,
                "variance": 0.5640230418
              },
              {
                "average": 220420126.4,
                "count": 1870097,
                "maximum": 220420937.2,
                "minimum": 220418778.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 468.8041135,
                "variance": 219777.2968
              },
              {
                "average": 0.4744497211,
                "count": 1870097,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49934689,
                "variance": 0.2493473166
              },
              {
                "average": 0,
                "count": 1870097,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1870097,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1870097,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08998838028,
                "count": 1870097,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2861651892,
                "variance": 0.08189051549
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87547.32045,
              2375389.347,
              0.9255322887,
              -87051.02045,
              2375862.807,
              4.425532289
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87547.32045451934,
                    2375389.346876428,
                    0.925532288669556
                  ],
                  [
                    -87547.32045451934,
                    2375862.806876428,
                    0.925532288669556
                  ],
                  [
                    -87051.02045451936,
                    2375862.806876428,
                    4.425532288669556
                  ],
                  [
                    -87051.02045451936,
                    2375389.346876428,
                    4.425532288669556
                  ],
                  [
                    -87547.32045451934,
                    2375389.346876428,
                    0.925532288669556
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:48:57+00:00",
            "end_time": "2018-09-08T05:12:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2222.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6534476644476,
              71.30406098251608,
              3.406519162014341
            ],
            [
              -156.65396220295932,
              71.30839917847828,
              3.406519162014341
            ],
            [
              -156.640452508487,
              71.308580780543,
              8.006519162014342
            ],
            [
              -156.63994058363994,
              71.30424254405979,
              8.006519162014342
            ],
            [
              -156.6534476644476,
              71.30406098251608,
              3.406519162014341
            ]
          ]
        ]
      },
      "bbox": [
        -156.6539622,
        71.30406098,
        3.406519162,
        -156.6399406,
        71.30858078,
        8.006519162
      ],
      "properties": {
        "datetime": "2018-09-08T05:16:20Z",
        "pc:count": 2320359,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97069.56398,
            "count": 2320359,
            "maximum": -96835.74388,
            "minimum": -97331.72388,
            "name": "X",
            "position": 0,
            "stddev": 132.0509327,
            "variance": 17437.44883
          },
          {
            "average": 2369513.285,
            "count": 2320359,
            "maximum": 2369761.155,
            "minimum": 2369288.615,
            "name": "Y",
            "position": 1,
            "stddev": 123.9833527,
            "variance": 15371.87173
          },
          {
            "average": 3.797826783,
            "count": 2320359,
            "maximum": 8.006519162,
            "minimum": 3.406519162,
            "name": "Z",
            "position": 2,
            "stddev": 0.1945356301,
            "variance": 0.03784411138
          },
          {
            "average": 28031.44028,
            "count": 2320359,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12621.93572,
            "variance": 159313261.4
          },
          {
            "average": 1.000001293,
            "count": 2320359,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001137058604,
            "variance": 1.292902268e-06
          },
          {
            "average": 1.000002586,
            "count": 2320359,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001608042659,
            "variance": 2.585801193e-06
          },
          {
            "average": 0.4982978927,
            "count": 2320359,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999972106,
            "variance": 0.2499972106
          },
          {
            "average": 0.0006292129795,
            "count": 2320359,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02507623061,
            "variance": 0.0006288173416
          },
          {
            "average": 1.853251156,
            "count": 2320359,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.051112022,
            "variance": 4.207060527
          },
          {
            "average": -0.747555154,
            "count": 2320359,
            "maximum": 16.21199989,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.759687803,
            "variance": 95.25150601
          },
          {
            "average": 0.4520563413,
            "count": 2320359,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4976962049,
            "variance": 0.2477015123
          },
          {
            "average": 411.4615781,
            "count": 2320359,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9338408241,
            "variance": 0.8720586847
          },
          {
            "average": 220418122.2,
            "count": 2320359,
            "maximum": 220418980.7,
            "minimum": 220417293.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 518.475245,
            "variance": 268816.5796
          },
          {
            "average": 0.4520563413,
            "count": 2320359,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4976962049,
            "variance": 0.2477015123
          },
          {
            "average": 0,
            "count": 2320359,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2320359,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2320359,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2139841292,
            "count": 2320359,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4101158301,
            "variance": 0.1681949941
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97331.72388,
          2369288.615,
          3.406519162,
          -96835.74388,
          2369761.155,
          8.006519162
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97331.72387760658,
                2369288.614540989,
                3.406519162014341
              ],
              [
                -97331.72387760658,
                2369761.154540989,
                3.406519162014341
              ],
              [
                -96835.74387760657,
                2369761.154540989,
                8.006519162014342
              ],
              [
                -96835.74387760657,
                2369288.614540989,
                8.006519162014342
              ],
              [
                -97331.72387760658,
                2369288.614540989,
                3.406519162014341
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:16:20+00:00",
        "end_time": "2018-09-08T04:48:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2222.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2222.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2222.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2222.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6539622,
            71.30406098,
            3.406519162,
            -156.6399406,
            71.30858078,
            8.006519162
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6534476644476,
                  71.30406098251608,
                  3.406519162014341
                ],
                [
                  -156.65396220295932,
                  71.30839917847828,
                  3.406519162014341
                ],
                [
                  -156.640452508487,
                  71.308580780543,
                  8.006519162014342
                ],
                [
                  -156.63994058363994,
                  71.30424254405979,
                  8.006519162014342
                ],
                [
                  -156.6534476644476,
                  71.30406098251608,
                  3.406519162014341
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2222.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2222.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:16:20Z",
            "pc:count": 2320359,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97069.56398,
                "count": 2320359,
                "maximum": -96835.74388,
                "minimum": -97331.72388,
                "name": "X",
                "position": 0,
                "stddev": 132.0509327,
                "variance": 17437.44883
              },
              {
                "average": 2369513.285,
                "count": 2320359,
                "maximum": 2369761.155,
                "minimum": 2369288.615,
                "name": "Y",
                "position": 1,
                "stddev": 123.9833527,
                "variance": 15371.87173
              },
              {
                "average": 3.797826783,
                "count": 2320359,
                "maximum": 8.006519162,
                "minimum": 3.406519162,
                "name": "Z",
                "position": 2,
                "stddev": 0.1945356301,
                "variance": 0.03784411138
              },
              {
                "average": 28031.44028,
                "count": 2320359,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12621.93572,
                "variance": 159313261.4
              },
              {
                "average": 1.000001293,
                "count": 2320359,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001137058604,
                "variance": 1.292902268e-06
              },
              {
                "average": 1.000002586,
                "count": 2320359,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001608042659,
                "variance": 2.585801193e-06
              },
              {
                "average": 0.4982978927,
                "count": 2320359,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999972106,
                "variance": 0.2499972106
              },
              {
                "average": 0.0006292129795,
                "count": 2320359,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02507623061,
                "variance": 0.0006288173416
              },
              {
                "average": 1.853251156,
                "count": 2320359,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.051112022,
                "variance": 4.207060527
              },
              {
                "average": -0.747555154,
                "count": 2320359,
                "maximum": 16.21199989,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.759687803,
                "variance": 95.25150601
              },
              {
                "average": 0.4520563413,
                "count": 2320359,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4976962049,
                "variance": 0.2477015123
              },
              {
                "average": 411.4615781,
                "count": 2320359,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9338408241,
                "variance": 0.8720586847
              },
              {
                "average": 220418122.2,
                "count": 2320359,
                "maximum": 220418980.7,
                "minimum": 220417293.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 518.475245,
                "variance": 268816.5796
              },
              {
                "average": 0.4520563413,
                "count": 2320359,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4976962049,
                "variance": 0.2477015123
              },
              {
                "average": 0,
                "count": 2320359,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2320359,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2320359,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2139841292,
                "count": 2320359,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4101158301,
                "variance": 0.1681949941
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97331.72388,
              2369288.615,
              3.406519162,
              -96835.74388,
              2369761.155,
              8.006519162
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97331.72387760658,
                    2369288.614540989,
                    3.406519162014341
                  ],
                  [
                    -97331.72387760658,
                    2369761.154540989,
                    3.406519162014341
                  ],
                  [
                    -96835.74387760657,
                    2369761.154540989,
                    8.006519162014342
                  ],
                  [
                    -96835.74387760657,
                    2369288.614540989,
                    8.006519162014342
                  ],
                  [
                    -97331.72387760658,
                    2369288.614540989,
                    3.406519162014341
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:16:20+00:00",
            "end_time": "2018-09-08T04:48:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2396.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.508551873546,
              71.36034817454808,
              0.828044127700222
            ],
            [
              -156.5090404631129,
              71.36469648348252,
              0.828044127700222
            ],
            [
              -156.49548573664939,
              71.36486833745595,
              4.728044127700222
            ],
            [
              -156.49499978163334,
              71.36051998996092,
              4.728044127700222
            ],
            [
              -156.508551873546,
              71.36034817454808,
              0.828044127700222
            ]
          ]
        ]
      },
      "bbox": [
        -156.5090405,
        71.36034817,
        0.8280441277,
        -156.4949998,
        71.36486834,
        4.728044128
      ],
      "properties": {
        "datetime": "2018-09-08T04:50:42Z",
        "pc:count": 2199886,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91556.31006,
            "count": 2199886,
            "maximum": -91291.71885,
            "minimum": -91788.05885,
            "name": "X",
            "position": 0,
            "stddev": 132.2916157,
            "variance": 17501.07158
          },
          {
            "average": 2375456.643,
            "count": 2199886,
            "maximum": 2375676.236,
            "minimum": 2375202.816,
            "name": "Y",
            "position": 1,
            "stddev": 131.1878201,
            "variance": 17210.24414
          },
          {
            "average": 1.360552462,
            "count": 2199886,
            "maximum": 4.728044128,
            "minimum": 0.8280441277,
            "name": "Z",
            "position": 2,
            "stddev": 0.5021041371,
            "variance": 0.2521085645
          },
          {
            "average": 16604.82449,
            "count": 2199886,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10327.26987,
            "variance": 106652503
          },
          {
            "average": 1,
            "count": 2199886,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2199886,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5065235199,
            "count": 2199886,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999575555,
            "variance": 0.2499575573
          },
          {
            "average": 0.0005377551382,
            "count": 2199886,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02318331732,
            "variance": 0.0005374662019
          },
          {
            "average": 5.62601653,
            "count": 2199886,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.748454154,
            "variance": 14.05090855
          },
          {
            "average": -2.298366834,
            "count": 2199886,
            "maximum": 16.3560009,
            "minimum": -16.03199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.536590786,
            "variance": 72.87338224
          },
          {
            "average": 0.4830168472,
            "count": 2199886,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997116029,
            "variance": 0.249711686
          },
          {
            "average": 408.3260664,
            "count": 2199886,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7719441616,
            "variance": 0.5958977887
          },
          {
            "average": 220416332.1,
            "count": 2199886,
            "maximum": 220417442.8,
            "minimum": 220415462.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 433.2348859,
            "variance": 187692.4664
          },
          {
            "average": 0.4830168472,
            "count": 2199886,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997116029,
            "variance": 0.249711686
          },
          {
            "average": 0,
            "count": 2199886,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2199886,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2199886,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1281211845,
            "count": 2199886,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3342247707,
            "variance": 0.1117061973
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91788.05885,
          2375202.816,
          0.8280441277,
          -91291.71885,
          2375676.236,
          4.728044128
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91788.05884901226,
                2375202.815671688,
                0.828044127700222
              ],
              [
                -91788.05884901226,
                2375676.235671688,
                0.828044127700222
              ],
              [
                -91291.71884901226,
                2375676.235671688,
                4.728044127700222
              ],
              [
                -91291.71884901226,
                2375202.815671688,
                4.728044127700222
              ],
              [
                -91788.05884901226,
                2375202.815671688,
                0.828044127700222
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:50:42+00:00",
        "end_time": "2018-09-08T04:17:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2396.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2396.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2396.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2396.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5090405,
            71.36034817,
            0.8280441277,
            -156.4949998,
            71.36486834,
            4.728044128
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.508551873546,
                  71.36034817454808,
                  0.828044127700222
                ],
                [
                  -156.5090404631129,
                  71.36469648348252,
                  0.828044127700222
                ],
                [
                  -156.49548573664939,
                  71.36486833745595,
                  4.728044127700222
                ],
                [
                  -156.49499978163334,
                  71.36051998996092,
                  4.728044127700222
                ],
                [
                  -156.508551873546,
                  71.36034817454808,
                  0.828044127700222
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2396.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2396.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:50:42Z",
            "pc:count": 2199886,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91556.31006,
                "count": 2199886,
                "maximum": -91291.71885,
                "minimum": -91788.05885,
                "name": "X",
                "position": 0,
                "stddev": 132.2916157,
                "variance": 17501.07158
              },
              {
                "average": 2375456.643,
                "count": 2199886,
                "maximum": 2375676.236,
                "minimum": 2375202.816,
                "name": "Y",
                "position": 1,
                "stddev": 131.1878201,
                "variance": 17210.24414
              },
              {
                "average": 1.360552462,
                "count": 2199886,
                "maximum": 4.728044128,
                "minimum": 0.8280441277,
                "name": "Z",
                "position": 2,
                "stddev": 0.5021041371,
                "variance": 0.2521085645
              },
              {
                "average": 16604.82449,
                "count": 2199886,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10327.26987,
                "variance": 106652503
              },
              {
                "average": 1,
                "count": 2199886,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2199886,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5065235199,
                "count": 2199886,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999575555,
                "variance": 0.2499575573
              },
              {
                "average": 0.0005377551382,
                "count": 2199886,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02318331732,
                "variance": 0.0005374662019
              },
              {
                "average": 5.62601653,
                "count": 2199886,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.748454154,
                "variance": 14.05090855
              },
              {
                "average": -2.298366834,
                "count": 2199886,
                "maximum": 16.3560009,
                "minimum": -16.03199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.536590786,
                "variance": 72.87338224
              },
              {
                "average": 0.4830168472,
                "count": 2199886,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997116029,
                "variance": 0.249711686
              },
              {
                "average": 408.3260664,
                "count": 2199886,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7719441616,
                "variance": 0.5958977887
              },
              {
                "average": 220416332.1,
                "count": 2199886,
                "maximum": 220417442.8,
                "minimum": 220415462.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 433.2348859,
                "variance": 187692.4664
              },
              {
                "average": 0.4830168472,
                "count": 2199886,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997116029,
                "variance": 0.249711686
              },
              {
                "average": 0,
                "count": 2199886,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2199886,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2199886,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1281211845,
                "count": 2199886,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3342247707,
                "variance": 0.1117061973
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91788.05885,
              2375202.816,
              0.8280441277,
              -91291.71885,
              2375676.236,
              4.728044128
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91788.05884901226,
                    2375202.815671688,
                    0.828044127700222
                  ],
                  [
                    -91788.05884901226,
                    2375676.235671688,
                    0.828044127700222
                  ],
                  [
                    -91291.71884901226,
                    2375676.235671688,
                    4.728044127700222
                  ],
                  [
                    -91291.71884901226,
                    2375202.815671688,
                    4.728044127700222
                  ],
                  [
                    -91788.05884901226,
                    2375202.815671688,
                    0.828044127700222
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:50:42+00:00",
            "end_time": "2018-09-08T04:17:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2285.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6906571571537,
              71.32070934032012,
              -14.524673295428967
            ],
            [
              -156.6911804448709,
              71.32505747685605,
              -14.524673295428967
            ],
            [
              -156.6776609929775,
              71.3252416512353,
              21.395326704571033
            ],
            [
              -156.67714032834255,
              71.32089347347056,
              21.395326704571033
            ],
            [
              -156.6906571571537,
              71.32070934032012,
              -14.524673295428967
            ]
          ]
        ]
      },
      "bbox": [
        -156.6911804,
        71.32070934,
        -14.5246733,
        -156.6771403,
        71.32524165,
        21.3953267
      ],
      "properties": {
        "datetime": "2018-09-08T04:20:07Z",
        "pc:count": 2192719,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98363.62668,
            "count": 2192719,
            "maximum": -98126.50242,
            "minimum": -98622.48242,
            "name": "X",
            "position": 0,
            "stddev": 138.7945411,
            "variance": 19263.92463
          },
          {
            "average": 2371420.663,
            "count": 2192719,
            "maximum": 2371627.531,
            "minimum": 2371153.951,
            "name": "Y",
            "position": 1,
            "stddev": 130.2732346,
            "variance": 16971.11567
          },
          {
            "average": 2.599359168,
            "count": 2192719,
            "maximum": 21.3953267,
            "minimum": -14.5246733,
            "name": "Z",
            "position": 2,
            "stddev": 1.721747622,
            "variance": 2.964414874
          },
          {
            "average": 23147.18005,
            "count": 2192719,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14018.30226,
            "variance": 196512798.2
          },
          {
            "average": 1.00776114,
            "count": 2192719,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08961636247,
            "variance": 0.008031092422
          },
          {
            "average": 1.015535506,
            "count": 2192719,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1276008484,
            "variance": 0.01628197651
          },
          {
            "average": 0.4957808091,
            "count": 2192719,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999823121,
            "variance": 0.2499823124
          },
          {
            "average": 0.0004952755004,
            "count": 2192719,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02224927928,
            "variance": 0.0004950304284
          },
          {
            "average": 4.436466779,
            "count": 2192719,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.620509508,
            "variance": 13.1080891
          },
          {
            "average": 2.05116759,
            "count": 2192719,
            "maximum": 16.29000092,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.160194896,
            "variance": 83.90917053
          },
          {
            "average": 0.4862871166,
            "count": 2192719,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998120354,
            "variance": 0.2498120708
          },
          {
            "average": 405.3214958,
            "count": 2192719,
            "maximum": 407,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8140636837,
            "variance": 0.6626996811
          },
          {
            "average": 220414659.7,
            "count": 2192719,
            "maximum": 220415607.8,
            "minimum": 220413366.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 460.5157489,
            "variance": 212074.755
          },
          {
            "average": 0.4862871166,
            "count": 2192719,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998120354,
            "variance": 0.2498120708
          },
          {
            "average": 0,
            "count": 2192719,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2192719,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2192719,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1544306407,
            "count": 2192719,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3613611455,
            "variance": 0.1305818775
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98622.48242,
          2371153.951,
          -14.5246733,
          -98126.50242,
          2371627.531,
          21.3953267
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98622.48241706353,
                2371153.9508056724,
                -14.524673295428967
              ],
              [
                -98622.48241706353,
                2371627.5308056725,
                -14.524673295428967
              ],
              [
                -98126.50241706352,
                2371627.5308056725,
                21.395326704571033
              ],
              [
                -98126.50241706352,
                2371153.9508056724,
                21.395326704571033
              ],
              [
                -98622.48241706353,
                2371153.9508056724,
                -14.524673295428967
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:20:07+00:00",
        "end_time": "2018-09-08T03:42:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2285.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2285.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2285.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2285.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6911804,
            71.32070934,
            -14.5246733,
            -156.6771403,
            71.32524165,
            21.3953267
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6906571571537,
                  71.32070934032012,
                  -14.524673295428967
                ],
                [
                  -156.6911804448709,
                  71.32505747685605,
                  -14.524673295428967
                ],
                [
                  -156.6776609929775,
                  71.3252416512353,
                  21.395326704571033
                ],
                [
                  -156.67714032834255,
                  71.32089347347056,
                  21.395326704571033
                ],
                [
                  -156.6906571571537,
                  71.32070934032012,
                  -14.524673295428967
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2285.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2285.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:20:07Z",
            "pc:count": 2192719,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98363.62668,
                "count": 2192719,
                "maximum": -98126.50242,
                "minimum": -98622.48242,
                "name": "X",
                "position": 0,
                "stddev": 138.7945411,
                "variance": 19263.92463
              },
              {
                "average": 2371420.663,
                "count": 2192719,
                "maximum": 2371627.531,
                "minimum": 2371153.951,
                "name": "Y",
                "position": 1,
                "stddev": 130.2732346,
                "variance": 16971.11567
              },
              {
                "average": 2.599359168,
                "count": 2192719,
                "maximum": 21.3953267,
                "minimum": -14.5246733,
                "name": "Z",
                "position": 2,
                "stddev": 1.721747622,
                "variance": 2.964414874
              },
              {
                "average": 23147.18005,
                "count": 2192719,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14018.30226,
                "variance": 196512798.2
              },
              {
                "average": 1.00776114,
                "count": 2192719,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08961636247,
                "variance": 0.008031092422
              },
              {
                "average": 1.015535506,
                "count": 2192719,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1276008484,
                "variance": 0.01628197651
              },
              {
                "average": 0.4957808091,
                "count": 2192719,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999823121,
                "variance": 0.2499823124
              },
              {
                "average": 0.0004952755004,
                "count": 2192719,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02224927928,
                "variance": 0.0004950304284
              },
              {
                "average": 4.436466779,
                "count": 2192719,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.620509508,
                "variance": 13.1080891
              },
              {
                "average": 2.05116759,
                "count": 2192719,
                "maximum": 16.29000092,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.160194896,
                "variance": 83.90917053
              },
              {
                "average": 0.4862871166,
                "count": 2192719,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998120354,
                "variance": 0.2498120708
              },
              {
                "average": 405.3214958,
                "count": 2192719,
                "maximum": 407,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8140636837,
                "variance": 0.6626996811
              },
              {
                "average": 220414659.7,
                "count": 2192719,
                "maximum": 220415607.8,
                "minimum": 220413366.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 460.5157489,
                "variance": 212074.755
              },
              {
                "average": 0.4862871166,
                "count": 2192719,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998120354,
                "variance": 0.2498120708
              },
              {
                "average": 0,
                "count": 2192719,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2192719,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2192719,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1544306407,
                "count": 2192719,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3613611455,
                "variance": 0.1305818775
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98622.48242,
              2371153.951,
              -14.5246733,
              -98126.50242,
              2371627.531,
              21.3953267
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98622.48241706353,
                    2371153.9508056724,
                    -14.524673295428967
                  ],
                  [
                    -98622.48241706353,
                    2371627.5308056725,
                    -14.524673295428967
                  ],
                  [
                    -98126.50241706352,
                    2371627.5308056725,
                    21.395326704571033
                  ],
                  [
                    -98126.50241706352,
                    2371153.9508056724,
                    21.395326704571033
                  ],
                  [
                    -98622.48241706353,
                    2371153.9508056724,
                    -14.524673295428967
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:20:07+00:00",
            "end_time": "2018-09-08T03:42:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2304.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.62645024781335,
              71.3243517200175,
              0.965563547256854
            ],
            [
              -156.62696098708525,
              71.32869884704515,
              0.965563547256854
            ],
            [
              -156.61343717716497,
              71.32887864377481,
              16.785563547256857
            ],
            [
              -156.61292906177673,
              71.32453147649919,
              16.785563547256857
            ],
            [
              -156.62645024781335,
              71.3243517200175,
              0.965563547256854
            ]
          ]
        ]
      },
      "bbox": [
        -156.626961,
        71.32435172,
        0.9655635473,
        -156.6129291,
        71.32887864,
        16.78556355
      ],
      "properties": {
        "datetime": "2018-09-08T04:49:05Z",
        "pc:count": 3039908,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96004.37371,
            "count": 3039908,
            "maximum": -95758.59272,
            "minimum": -96254.63272,
            "name": "X",
            "position": 0,
            "stddev": 137.4295114,
            "variance": 18886.87059
          },
          {
            "average": 2371681.46,
            "count": 3039908,
            "maximum": 2371929.256,
            "minimum": 2371455.816,
            "name": "Y",
            "position": 1,
            "stddev": 119.9628852,
            "variance": 14391.09382
          },
          {
            "average": 3.966039368,
            "count": 3039908,
            "maximum": 16.78556355,
            "minimum": 0.9655635473,
            "name": "Z",
            "position": 2,
            "stddev": 0.8580803053,
            "variance": 0.7363018104
          },
          {
            "average": 42820.1458,
            "count": 3039908,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11059.80655,
            "variance": 122319320.9
          },
          {
            "average": 1.000291785,
            "count": 3039908,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01732780992,
            "variance": 0.0003002529967
          },
          {
            "average": 1.000584886,
            "count": 3039908,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02470228535,
            "variance": 0.0006102029018
          },
          {
            "average": 0.5020803261,
            "count": 3039908,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999957545,
            "variance": 0.2499957545
          },
          {
            "average": 0.0004618560825,
            "count": 3039908,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0214858773,
            "variance": 0.0004616429233
          },
          {
            "average": 1.438962955,
            "count": 3039908,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.094861088,
            "variance": 1.198720803
          },
          {
            "average": 1.364599008,
            "count": 3039908,
            "maximum": 16.37400055,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.47756116,
            "variance": 109.7792879
          },
          {
            "average": 0.5348204617,
            "count": 3039908,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987861438,
            "variance": 0.2487876173
          },
          {
            "average": 408.710581,
            "count": 3039908,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9681030248,
            "variance": 0.9372234665
          },
          {
            "average": 220416582.5,
            "count": 3039908,
            "maximum": 220417345.2,
            "minimum": 220415564.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 558.8340046,
            "variance": 312295.4447
          },
          {
            "average": 0.5348204617,
            "count": 3039908,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987861438,
            "variance": 0.2487876173
          },
          {
            "average": 0,
            "count": 3039908,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3039908,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3039908,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2663070725,
            "count": 3039908,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4420267864,
            "variance": 0.1953876799
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96254.63272,
          2371455.816,
          0.9655635473,
          -95758.59272,
          2371929.256,
          16.78556355
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96254.63272059476,
                2371455.816033087,
                0.965563547256854
              ],
              [
                -96254.63272059476,
                2371929.2560330876,
                0.965563547256854
              ],
              [
                -95758.59272059475,
                2371929.2560330876,
                16.785563547256857
              ],
              [
                -95758.59272059475,
                2371455.816033087,
                16.785563547256857
              ],
              [
                -96254.63272059476,
                2371455.816033087,
                0.965563547256854
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:49:05+00:00",
        "end_time": "2018-09-08T04:19:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2304.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2304.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2304.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2304.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.626961,
            71.32435172,
            0.9655635473,
            -156.6129291,
            71.32887864,
            16.78556355
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.62645024781335,
                  71.3243517200175,
                  0.965563547256854
                ],
                [
                  -156.62696098708525,
                  71.32869884704515,
                  0.965563547256854
                ],
                [
                  -156.61343717716497,
                  71.32887864377481,
                  16.785563547256857
                ],
                [
                  -156.61292906177673,
                  71.32453147649919,
                  16.785563547256857
                ],
                [
                  -156.62645024781335,
                  71.3243517200175,
                  0.965563547256854
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2304.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2304.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:49:05Z",
            "pc:count": 3039908,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96004.37371,
                "count": 3039908,
                "maximum": -95758.59272,
                "minimum": -96254.63272,
                "name": "X",
                "position": 0,
                "stddev": 137.4295114,
                "variance": 18886.87059
              },
              {
                "average": 2371681.46,
                "count": 3039908,
                "maximum": 2371929.256,
                "minimum": 2371455.816,
                "name": "Y",
                "position": 1,
                "stddev": 119.9628852,
                "variance": 14391.09382
              },
              {
                "average": 3.966039368,
                "count": 3039908,
                "maximum": 16.78556355,
                "minimum": 0.9655635473,
                "name": "Z",
                "position": 2,
                "stddev": 0.8580803053,
                "variance": 0.7363018104
              },
              {
                "average": 42820.1458,
                "count": 3039908,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11059.80655,
                "variance": 122319320.9
              },
              {
                "average": 1.000291785,
                "count": 3039908,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01732780992,
                "variance": 0.0003002529967
              },
              {
                "average": 1.000584886,
                "count": 3039908,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02470228535,
                "variance": 0.0006102029018
              },
              {
                "average": 0.5020803261,
                "count": 3039908,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999957545,
                "variance": 0.2499957545
              },
              {
                "average": 0.0004618560825,
                "count": 3039908,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0214858773,
                "variance": 0.0004616429233
              },
              {
                "average": 1.438962955,
                "count": 3039908,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.094861088,
                "variance": 1.198720803
              },
              {
                "average": 1.364599008,
                "count": 3039908,
                "maximum": 16.37400055,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.47756116,
                "variance": 109.7792879
              },
              {
                "average": 0.5348204617,
                "count": 3039908,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987861438,
                "variance": 0.2487876173
              },
              {
                "average": 408.710581,
                "count": 3039908,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9681030248,
                "variance": 0.9372234665
              },
              {
                "average": 220416582.5,
                "count": 3039908,
                "maximum": 220417345.2,
                "minimum": 220415564.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 558.8340046,
                "variance": 312295.4447
              },
              {
                "average": 0.5348204617,
                "count": 3039908,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987861438,
                "variance": 0.2487876173
              },
              {
                "average": 0,
                "count": 3039908,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3039908,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3039908,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2663070725,
                "count": 3039908,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4420267864,
                "variance": 0.1953876799
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96254.63272,
              2371455.816,
              0.9655635473,
              -95758.59272,
              2371929.256,
              16.78556355
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96254.63272059476,
                    2371455.816033087,
                    0.965563547256854
                  ],
                  [
                    -96254.63272059476,
                    2371929.2560330876,
                    0.965563547256854
                  ],
                  [
                    -95758.59272059475,
                    2371929.2560330876,
                    16.785563547256857
                  ],
                  [
                    -95758.59272059475,
                    2371455.816033087,
                    16.785563547256857
                  ],
                  [
                    -96254.63272059476,
                    2371455.816033087,
                    0.965563547256854
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:49:05+00:00",
            "end_time": "2018-09-08T04:19:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2408.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48261185220505,
              71.36487382589372,
              0.834425833231428
            ],
            [
              -156.48302511149313,
              71.36858964153618,
              0.834425833231428
            ],
            [
              -156.4733142749134,
              71.3687115561811,
              1.494425833231428
            ],
            [
              -156.47290262884152,
              71.36499571715643,
              1.494425833231428
            ],
            [
              -156.48261185220505,
              71.36487382589372,
              0.834425833231428
            ]
          ]
        ]
      },
      "bbox": [
        -156.4830251,
        71.36487383,
        0.8344258332,
        -156.4729026,
        71.36871156,
        1.494425833
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:00Z",
        "pc:count": 566065,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90690.50652,
            "count": 566065,
            "maximum": -90465.43447,
            "minimum": -90820.95447,
            "name": "X",
            "position": 0,
            "stddev": 82.27049079,
            "variance": 6768.433654
          },
          {
            "average": 2375921.322,
            "count": 566065,
            "maximum": 2376063.721,
            "minimum": 2375659.181,
            "name": "Y",
            "position": 1,
            "stddev": 94.15337226,
            "variance": 8864.857508
          },
          {
            "average": 1.129917146,
            "count": 566065,
            "maximum": 1.494425833,
            "minimum": 0.8344258332,
            "name": "Z",
            "position": 2,
            "stddev": 0.06906606782,
            "variance": 0.004770121724
          },
          {
            "average": 15240.7415,
            "count": 566065,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11554.21253,
            "variance": 133499827.2
          },
          {
            "average": 1,
            "count": 566065,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 566065,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5091712083,
            "count": 566065,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999163234,
            "variance": 0.2499163304
          },
          {
            "average": 0.0007419642621,
            "count": 566065,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02722893793,
            "variance": 0.0007414150609
          },
          {
            "average": 7.307084875,
            "count": 566065,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.807556362,
            "variance": 7.882372728
          },
          {
            "average": -2.182816683,
            "count": 566065,
            "maximum": 16.38599968,
            "minimum": -13.77600002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.728109644,
            "variance": 59.72367866
          },
          {
            "average": 0.4811302589,
            "count": 566065,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996442473,
            "variance": 0.2496443739
          },
          {
            "average": 408.78727,
            "count": 566065,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6887458618,
            "variance": 0.4743708622
          },
          {
            "average": 220416616.6,
            "count": 566065,
            "maximum": 220417460.4,
            "minimum": 220415450.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 379.8776227,
            "variance": 144307.0083
          },
          {
            "average": 0.4811302589,
            "count": 566065,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996442473,
            "variance": 0.2496443739
          },
          {
            "average": 0,
            "count": 566065,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 566065,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 566065,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09379311563,
            "count": 566065,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2915409358,
            "variance": 0.08499611724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90820.95447,
          2375659.181,
          0.8344258332,
          -90465.43447,
          2376063.721,
          1.494425833
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90820.95447017744,
                2375659.180957276,
                0.834425833231428
              ],
              [
                -90820.95447017744,
                2376063.720957276,
                0.834425833231428
              ],
              [
                -90465.43447017745,
                2376063.720957276,
                1.494425833231428
              ],
              [
                -90465.43447017745,
                2375659.180957276,
                1.494425833231428
              ],
              [
                -90820.95447017744,
                2375659.180957276,
                0.834425833231428
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:00+00:00",
        "end_time": "2018-09-08T04:17:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2408.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2408.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2408.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2408.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4830251,
            71.36487383,
            0.8344258332,
            -156.4729026,
            71.36871156,
            1.494425833
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48261185220505,
                  71.36487382589372,
                  0.834425833231428
                ],
                [
                  -156.48302511149313,
                  71.36858964153618,
                  0.834425833231428
                ],
                [
                  -156.4733142749134,
                  71.3687115561811,
                  1.494425833231428
                ],
                [
                  -156.47290262884152,
                  71.36499571715643,
                  1.494425833231428
                ],
                [
                  -156.48261185220505,
                  71.36487382589372,
                  0.834425833231428
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2408.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2408.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:00Z",
            "pc:count": 566065,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90690.50652,
                "count": 566065,
                "maximum": -90465.43447,
                "minimum": -90820.95447,
                "name": "X",
                "position": 0,
                "stddev": 82.27049079,
                "variance": 6768.433654
              },
              {
                "average": 2375921.322,
                "count": 566065,
                "maximum": 2376063.721,
                "minimum": 2375659.181,
                "name": "Y",
                "position": 1,
                "stddev": 94.15337226,
                "variance": 8864.857508
              },
              {
                "average": 1.129917146,
                "count": 566065,
                "maximum": 1.494425833,
                "minimum": 0.8344258332,
                "name": "Z",
                "position": 2,
                "stddev": 0.06906606782,
                "variance": 0.004770121724
              },
              {
                "average": 15240.7415,
                "count": 566065,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11554.21253,
                "variance": 133499827.2
              },
              {
                "average": 1,
                "count": 566065,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 566065,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5091712083,
                "count": 566065,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999163234,
                "variance": 0.2499163304
              },
              {
                "average": 0.0007419642621,
                "count": 566065,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02722893793,
                "variance": 0.0007414150609
              },
              {
                "average": 7.307084875,
                "count": 566065,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.807556362,
                "variance": 7.882372728
              },
              {
                "average": -2.182816683,
                "count": 566065,
                "maximum": 16.38599968,
                "minimum": -13.77600002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.728109644,
                "variance": 59.72367866
              },
              {
                "average": 0.4811302589,
                "count": 566065,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996442473,
                "variance": 0.2496443739
              },
              {
                "average": 408.78727,
                "count": 566065,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6887458618,
                "variance": 0.4743708622
              },
              {
                "average": 220416616.6,
                "count": 566065,
                "maximum": 220417460.4,
                "minimum": 220415450.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 379.8776227,
                "variance": 144307.0083
              },
              {
                "average": 0.4811302589,
                "count": 566065,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996442473,
                "variance": 0.2496443739
              },
              {
                "average": 0,
                "count": 566065,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 566065,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 566065,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09379311563,
                "count": 566065,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2915409358,
                "variance": 0.08499611724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90820.95447,
              2375659.181,
              0.8344258332,
              -90465.43447,
              2376063.721,
              1.494425833
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90820.95447017744,
                    2375659.180957276,
                    0.834425833231428
                  ],
                  [
                    -90820.95447017744,
                    2376063.720957276,
                    0.834425833231428
                  ],
                  [
                    -90465.43447017745,
                    2376063.720957276,
                    1.494425833231428
                  ],
                  [
                    -90465.43447017745,
                    2375659.180957276,
                    1.494425833231428
                  ],
                  [
                    -90820.95447017744,
                    2375659.180957276,
                    0.834425833231428
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:00+00:00",
            "end_time": "2018-09-08T04:17:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2264.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57621469153074,
              71.31168258777369,
              2.773509571289367
            ],
            [
              -156.5767155314152,
              71.31603075538035,
              2.773509571289367
            ],
            [
              -156.56319734341756,
              71.31620711238398,
              674.3735095712893
            ],
            [
              -156.5626991258494,
              71.31185890531876,
              674.3735095712893
            ],
            [
              -156.57621469153074,
              71.31168258777369,
              2.773509571289367
            ]
          ]
        ]
      },
      "bbox": [
        -156.5767155,
        71.31168259,
        2.773509571,
        -156.5626991,
        71.31620711,
        674.3735096
      ],
      "properties": {
        "datetime": "2018-09-11T17:33:27Z",
        "pc:count": 3543930,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94215.01353,
            "count": 3543930,
            "maximum": -93971.89551,
            "minimum": -94467.99551,
            "name": "X",
            "position": 0,
            "stddev": 133.2229977,
            "variance": 17748.36711
          },
          {
            "average": 2370247.03,
            "count": 3543930,
            "maximum": 2370479.54,
            "minimum": 2370005.96,
            "name": "Y",
            "position": 1,
            "stddev": 128.0234213,
            "variance": 16389.99641
          },
          {
            "average": 3.641295464,
            "count": 3543930,
            "maximum": 674.3735096,
            "minimum": 2.773509571,
            "name": "Z",
            "position": 2,
            "stddev": 0.389266609,
            "variance": 0.1515284929
          },
          {
            "average": 35971.7293,
            "count": 3543930,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11608.36401,
            "variance": 134754115.1
          },
          {
            "average": 1.000000282,
            "count": 3543930,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005311992247,
            "variance": 2.821726163e-07
          },
          {
            "average": 1.000000564,
            "count": 3543930,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007512290418,
            "variance": 5.643450733e-07
          },
          {
            "average": 0.5049772428,
            "count": 3543930,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499975297,
            "variance": 0.2499752976
          },
          {
            "average": 0.0003947594902,
            "count": 3543930,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01986463608,
            "variance": 0.0003946037665
          },
          {
            "average": 1.28068077,
            "count": 3543930,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4494448958,
            "variance": 0.2020007143
          },
          {
            "average": -0.8605041243,
            "count": 3543930,
            "maximum": 16.44000053,
            "minimum": -19.45199966,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.48967289,
            "variance": 110.0332373
          },
          {
            "average": 0.512822488,
            "count": 3543930,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998356273,
            "variance": 0.2498356543
          },
          {
            "average": 421.8434645,
            "count": 3543930,
            "maximum": 453,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.83457751,
            "variance": 220.06469
          },
          {
            "average": 220476313.5,
            "count": 3543930,
            "maximum": 220722407.6,
            "minimum": 220418926.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 117793.8384,
            "variance": 13875388370.0
          },
          {
            "average": 0.512822488,
            "count": 3543930,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998356273,
            "variance": 0.2498356543
          },
          {
            "average": 0,
            "count": 3543930,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3543930,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3543930,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2151729859,
            "count": 3543930,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4109423557,
            "variance": 0.1688736197
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94467.99551,
          2370005.96,
          2.773509571,
          -93971.89551,
          2370479.54,
          674.3735096
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94467.9955113498,
                2370005.9596436853,
                2.773509571289367
              ],
              [
                -94467.9955113498,
                2370479.5396436853,
                2.773509571289367
              ],
              [
                -93971.8955113498,
                2370479.5396436853,
                674.3735095712893
              ],
              [
                -93971.8955113498,
                2370005.9596436853,
                674.3735095712893
              ],
              [
                -94467.9955113498,
                2370005.9596436853,
                2.773509571289367
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:33:27+00:00",
        "end_time": "2018-09-08T05:15:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2264.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2264.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2264.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2264.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5767155,
            71.31168259,
            2.773509571,
            -156.5626991,
            71.31620711,
            674.3735096
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57621469153074,
                  71.31168258777369,
                  2.773509571289367
                ],
                [
                  -156.5767155314152,
                  71.31603075538035,
                  2.773509571289367
                ],
                [
                  -156.56319734341756,
                  71.31620711238398,
                  674.3735095712893
                ],
                [
                  -156.5626991258494,
                  71.31185890531876,
                  674.3735095712893
                ],
                [
                  -156.57621469153074,
                  71.31168258777369,
                  2.773509571289367
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2264.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2264.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:33:27Z",
            "pc:count": 3543930,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94215.01353,
                "count": 3543930,
                "maximum": -93971.89551,
                "minimum": -94467.99551,
                "name": "X",
                "position": 0,
                "stddev": 133.2229977,
                "variance": 17748.36711
              },
              {
                "average": 2370247.03,
                "count": 3543930,
                "maximum": 2370479.54,
                "minimum": 2370005.96,
                "name": "Y",
                "position": 1,
                "stddev": 128.0234213,
                "variance": 16389.99641
              },
              {
                "average": 3.641295464,
                "count": 3543930,
                "maximum": 674.3735096,
                "minimum": 2.773509571,
                "name": "Z",
                "position": 2,
                "stddev": 0.389266609,
                "variance": 0.1515284929
              },
              {
                "average": 35971.7293,
                "count": 3543930,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11608.36401,
                "variance": 134754115.1
              },
              {
                "average": 1.000000282,
                "count": 3543930,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005311992247,
                "variance": 2.821726163e-07
              },
              {
                "average": 1.000000564,
                "count": 3543930,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007512290418,
                "variance": 5.643450733e-07
              },
              {
                "average": 0.5049772428,
                "count": 3543930,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499975297,
                "variance": 0.2499752976
              },
              {
                "average": 0.0003947594902,
                "count": 3543930,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01986463608,
                "variance": 0.0003946037665
              },
              {
                "average": 1.28068077,
                "count": 3543930,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4494448958,
                "variance": 0.2020007143
              },
              {
                "average": -0.8605041243,
                "count": 3543930,
                "maximum": 16.44000053,
                "minimum": -19.45199966,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.48967289,
                "variance": 110.0332373
              },
              {
                "average": 0.512822488,
                "count": 3543930,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998356273,
                "variance": 0.2498356543
              },
              {
                "average": 421.8434645,
                "count": 3543930,
                "maximum": 453,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.83457751,
                "variance": 220.06469
              },
              {
                "average": 220476313.5,
                "count": 3543930,
                "maximum": 220722407.6,
                "minimum": 220418926.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 117793.8384,
                "variance": 13875388370.0
              },
              {
                "average": 0.512822488,
                "count": 3543930,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998356273,
                "variance": 0.2498356543
              },
              {
                "average": 0,
                "count": 3543930,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3543930,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3543930,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2151729859,
                "count": 3543930,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4109423557,
                "variance": 0.1688736197
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94467.99551,
              2370005.96,
              2.773509571,
              -93971.89551,
              2370479.54,
              674.3735096
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94467.9955113498,
                    2370005.9596436853,
                    2.773509571289367
                  ],
                  [
                    -94467.9955113498,
                    2370479.5396436853,
                    2.773509571289367
                  ],
                  [
                    -93971.8955113498,
                    2370479.5396436853,
                    674.3735095712893
                  ],
                  [
                    -93971.8955113498,
                    2370005.9596436853,
                    674.3735095712893
                  ],
                  [
                    -94467.9955113498,
                    2370005.9596436853,
                    2.773509571289367
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:33:27+00:00",
            "end_time": "2018-09-08T05:15:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2409.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.42777278150328,
              71.36495687655555,
              0.888489296188967
            ],
            [
              -156.42812072588825,
              71.36815620564673,
              0.888489296188967
            ],
            [
              -156.4182803092947,
              71.36827700631271,
              1.448489296188967
            ],
            [
              -156.41793377252142,
              71.36507765727326,
              1.448489296188967
            ],
            [
              -156.42777278150328,
              71.36495687655555,
              0.888489296188967
            ]
          ]
        ]
      },
      "bbox": [
        -156.4281207,
        71.36495688,
        0.8884892962,
        -156.4179338,
        71.36827701,
        1.448489296
      ],
      "properties": {
        "datetime": "2018-09-08T05:27:54Z",
        "pc:count": 500663,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88586.77471,
            "count": 500663,
            "maximum": -88455.09998,
            "minimum": -88815.35998,
            "name": "X",
            "position": 0,
            "stddev": 82.82109391,
            "variance": 6859.333596
          },
          {
            "average": 2375810.084,
            "count": 500663,
            "maximum": 2375942.343,
            "minimum": 2375594.043,
            "name": "Y",
            "position": 1,
            "stddev": 81.75461243,
            "variance": 6683.816654
          },
          {
            "average": 1.139998535,
            "count": 500663,
            "maximum": 1.448489296,
            "minimum": 0.8884892962,
            "name": "Z",
            "position": 2,
            "stddev": 0.0611515957,
            "variance": 0.003739517657
          },
          {
            "average": 17078.91369,
            "count": 500663,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12698.56724,
            "variance": 161253609.9
          },
          {
            "average": 1,
            "count": 500663,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 500663,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5115017487,
            "count": 500663,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998681915,
            "variance": 0.2498682089
          },
          {
            "average": 0.0006571286474,
            "count": 500663,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02562612224,
            "variance": 0.000656698141
          },
          {
            "average": 7.768644777,
            "count": 500663,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.360623591,
            "variance": 5.572543738
          },
          {
            "average": -3.320967816,
            "count": 500663,
            "maximum": 16.64999962,
            "minimum": -15.43200016,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.522995008,
            "variance": 42.54946387
          },
          {
            "average": 0.4863970375,
            "count": 500663,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998154243,
            "variance": 0.2498154584
          },
          {
            "average": 412.5909464,
            "count": 500663,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6581699956,
            "variance": 0.4331877432
          },
          {
            "average": 220418719.1,
            "count": 500663,
            "maximum": 220419674.7,
            "minimum": 220417689.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 319.5319218,
            "variance": 102100.649
          },
          {
            "average": 0.4863970375,
            "count": 500663,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998154243,
            "variance": 0.2498154584
          },
          {
            "average": 0,
            "count": 500663,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 500663,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 500663,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05789523092,
            "count": 500663,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2335454605,
            "variance": 0.0545434821
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88815.35998,
          2375594.043,
          0.8884892962,
          -88455.09998,
          2375942.343,
          1.448489296
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88815.35997763638,
                2375594.042744851,
                0.888489296188967
              ],
              [
                -88815.35997763638,
                2375942.342744851,
                0.888489296188967
              ],
              [
                -88455.09997763638,
                2375942.342744851,
                1.448489296188967
              ],
              [
                -88455.09997763638,
                2375594.042744851,
                1.448489296188967
              ],
              [
                -88815.35997763638,
                2375594.042744851,
                0.888489296188967
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:27:54+00:00",
        "end_time": "2018-09-08T04:54:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2409.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2409.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2409.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2409.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4281207,
            71.36495688,
            0.8884892962,
            -156.4179338,
            71.36827701,
            1.448489296
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.42777278150328,
                  71.36495687655555,
                  0.888489296188967
                ],
                [
                  -156.42812072588825,
                  71.36815620564673,
                  0.888489296188967
                ],
                [
                  -156.4182803092947,
                  71.36827700631271,
                  1.448489296188967
                ],
                [
                  -156.41793377252142,
                  71.36507765727326,
                  1.448489296188967
                ],
                [
                  -156.42777278150328,
                  71.36495687655555,
                  0.888489296188967
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2409.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2409.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:27:54Z",
            "pc:count": 500663,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88586.77471,
                "count": 500663,
                "maximum": -88455.09998,
                "minimum": -88815.35998,
                "name": "X",
                "position": 0,
                "stddev": 82.82109391,
                "variance": 6859.333596
              },
              {
                "average": 2375810.084,
                "count": 500663,
                "maximum": 2375942.343,
                "minimum": 2375594.043,
                "name": "Y",
                "position": 1,
                "stddev": 81.75461243,
                "variance": 6683.816654
              },
              {
                "average": 1.139998535,
                "count": 500663,
                "maximum": 1.448489296,
                "minimum": 0.8884892962,
                "name": "Z",
                "position": 2,
                "stddev": 0.0611515957,
                "variance": 0.003739517657
              },
              {
                "average": 17078.91369,
                "count": 500663,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12698.56724,
                "variance": 161253609.9
              },
              {
                "average": 1,
                "count": 500663,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 500663,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5115017487,
                "count": 500663,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998681915,
                "variance": 0.2498682089
              },
              {
                "average": 0.0006571286474,
                "count": 500663,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02562612224,
                "variance": 0.000656698141
              },
              {
                "average": 7.768644777,
                "count": 500663,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.360623591,
                "variance": 5.572543738
              },
              {
                "average": -3.320967816,
                "count": 500663,
                "maximum": 16.64999962,
                "minimum": -15.43200016,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.522995008,
                "variance": 42.54946387
              },
              {
                "average": 0.4863970375,
                "count": 500663,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998154243,
                "variance": 0.2498154584
              },
              {
                "average": 412.5909464,
                "count": 500663,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6581699956,
                "variance": 0.4331877432
              },
              {
                "average": 220418719.1,
                "count": 500663,
                "maximum": 220419674.7,
                "minimum": 220417689.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 319.5319218,
                "variance": 102100.649
              },
              {
                "average": 0.4863970375,
                "count": 500663,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998154243,
                "variance": 0.2498154584
              },
              {
                "average": 0,
                "count": 500663,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 500663,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 500663,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05789523092,
                "count": 500663,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2335454605,
                "variance": 0.0545434821
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88815.35998,
              2375594.043,
              0.8884892962,
              -88455.09998,
              2375942.343,
              1.448489296
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88815.35997763638,
                    2375594.042744851,
                    0.888489296188967
                  ],
                  [
                    -88815.35997763638,
                    2375942.342744851,
                    0.888489296188967
                  ],
                  [
                    -88455.09997763638,
                    2375942.342744851,
                    1.448489296188967
                  ],
                  [
                    -88455.09997763638,
                    2375594.042744851,
                    1.448489296188967
                  ],
                  [
                    -88815.35997763638,
                    2375594.042744851,
                    0.888489296188967
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:27:54+00:00",
            "end_time": "2018-09-08T04:54:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2419.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48229620439997,
              71.36841485804098,
              0.777151247525454
            ],
            [
              -156.48277121271343,
              71.37268576104645,
              0.777151247525454
            ],
            [
              -156.4692179925106,
              71.37285573882824,
              1.517151247525454
            ],
            [
              -156.46874557243086,
              71.36858479834456,
              1.517151247525454
            ],
            [
              -156.48229620439997,
              71.36841485804098,
              0.777151247525454
            ]
          ]
        ]
      },
      "bbox": [
        -156.4827712,
        71.36841486,
        0.7771512475,
        -156.4687456,
        71.37285574,
        1.517151248
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:04Z",
        "pc:count": 1732132,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90558.82171,
            "count": 1732132,
            "maximum": -90298.91642,
            "minimum": -90795.01642,
            "name": "X",
            "position": 0,
            "stddev": 131.5854081,
            "variance": 17314.71962
          },
          {
            "average": 2376281.003,
            "count": 1732132,
            "maximum": 2376508.682,
            "minimum": 2376043.722,
            "name": "Y",
            "position": 1,
            "stddev": 124.0576369,
            "variance": 15390.29727
          },
          {
            "average": 1.125641501,
            "count": 1732132,
            "maximum": 1.517151248,
            "minimum": 0.7771512475,
            "name": "Z",
            "position": 2,
            "stddev": 0.07369290516,
            "variance": 0.005430644271
          },
          {
            "average": 14672.59123,
            "count": 1732132,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11030.20871,
            "variance": 121665504.3
          },
          {
            "average": 1,
            "count": 1732132,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1732132,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5051364446,
            "count": 1732132,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999737606,
            "variance": 0.2499737613
          },
          {
            "average": 0.0006281276485,
            "count": 1732132,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02505460969,
            "variance": 0.0006277334665
          },
          {
            "average": 7.26050555,
            "count": 1732132,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.852868364,
            "variance": 8.138857904
          },
          {
            "average": -1.191557015,
            "count": 1732132,
            "maximum": 16.36199951,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.031008314,
            "variance": 64.49709454
          },
          {
            "average": 0.4820302379,
            "count": 1732132,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996771275,
            "variance": 0.2496772318
          },
          {
            "average": 408.1657472,
            "count": 1732132,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7375515737,
            "variance": 0.5439823239
          },
          {
            "average": 220416261.5,
            "count": 1732132,
            "maximum": 220417464.9,
            "minimum": 220415200.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 427.2079075,
            "variance": 182506.5962
          },
          {
            "average": 0.4820302379,
            "count": 1732132,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996771275,
            "variance": 0.2496772318
          },
          {
            "average": 0,
            "count": 1732132,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1732132,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1732132,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0856793824,
            "count": 1732132,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2798901053,
            "variance": 0.07833847106
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90795.01642,
          2376043.722,
          0.7771512475,
          -90298.91642,
          2376508.682,
          1.517151248
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90795.01642346256,
                2376043.722450174,
                0.777151247525454
              ],
              [
                -90795.01642346256,
                2376508.682450174,
                0.777151247525454
              ],
              [
                -90298.91642346255,
                2376508.682450174,
                1.517151247525454
              ],
              [
                -90298.91642346255,
                2376043.722450174,
                1.517151247525454
              ],
              [
                -90795.01642346256,
                2376043.722450174,
                0.777151247525454
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:04+00:00",
        "end_time": "2018-09-08T04:13:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2419.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2419.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2419.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2419.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4827712,
            71.36841486,
            0.7771512475,
            -156.4687456,
            71.37285574,
            1.517151248
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48229620439997,
                  71.36841485804098,
                  0.777151247525454
                ],
                [
                  -156.48277121271343,
                  71.37268576104645,
                  0.777151247525454
                ],
                [
                  -156.4692179925106,
                  71.37285573882824,
                  1.517151247525454
                ],
                [
                  -156.46874557243086,
                  71.36858479834456,
                  1.517151247525454
                ],
                [
                  -156.48229620439997,
                  71.36841485804098,
                  0.777151247525454
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2419.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2419.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:04Z",
            "pc:count": 1732132,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90558.82171,
                "count": 1732132,
                "maximum": -90298.91642,
                "minimum": -90795.01642,
                "name": "X",
                "position": 0,
                "stddev": 131.5854081,
                "variance": 17314.71962
              },
              {
                "average": 2376281.003,
                "count": 1732132,
                "maximum": 2376508.682,
                "minimum": 2376043.722,
                "name": "Y",
                "position": 1,
                "stddev": 124.0576369,
                "variance": 15390.29727
              },
              {
                "average": 1.125641501,
                "count": 1732132,
                "maximum": 1.517151248,
                "minimum": 0.7771512475,
                "name": "Z",
                "position": 2,
                "stddev": 0.07369290516,
                "variance": 0.005430644271
              },
              {
                "average": 14672.59123,
                "count": 1732132,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11030.20871,
                "variance": 121665504.3
              },
              {
                "average": 1,
                "count": 1732132,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1732132,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5051364446,
                "count": 1732132,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999737606,
                "variance": 0.2499737613
              },
              {
                "average": 0.0006281276485,
                "count": 1732132,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02505460969,
                "variance": 0.0006277334665
              },
              {
                "average": 7.26050555,
                "count": 1732132,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.852868364,
                "variance": 8.138857904
              },
              {
                "average": -1.191557015,
                "count": 1732132,
                "maximum": 16.36199951,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.031008314,
                "variance": 64.49709454
              },
              {
                "average": 0.4820302379,
                "count": 1732132,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996771275,
                "variance": 0.2496772318
              },
              {
                "average": 408.1657472,
                "count": 1732132,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7375515737,
                "variance": 0.5439823239
              },
              {
                "average": 220416261.5,
                "count": 1732132,
                "maximum": 220417464.9,
                "minimum": 220415200.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 427.2079075,
                "variance": 182506.5962
              },
              {
                "average": 0.4820302379,
                "count": 1732132,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996771275,
                "variance": 0.2496772318
              },
              {
                "average": 0,
                "count": 1732132,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1732132,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1732132,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0856793824,
                "count": 1732132,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2798901053,
                "variance": 0.07833847106
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90795.01642,
              2376043.722,
              0.7771512475,
              -90298.91642,
              2376508.682,
              1.517151248
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90795.01642346256,
                    2376043.722450174,
                    0.777151247525454
                  ],
                  [
                    -90795.01642346256,
                    2376508.682450174,
                    0.777151247525454
                  ],
                  [
                    -90298.91642346255,
                    2376508.682450174,
                    1.517151247525454
                  ],
                  [
                    -90298.91642346255,
                    2376043.722450174,
                    1.517151247525454
                  ],
                  [
                    -90795.01642346256,
                    2376043.722450174,
                    0.777151247525454
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:04+00:00",
            "end_time": "2018-09-08T04:13:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2446.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48132623439358,
              71.38062624792708,
              1.138645306174803
            ],
            [
              -156.48181000373185,
              71.38497559572903,
              1.138645306174803
            ],
            [
              -156.4682427525623,
              71.3851456036077,
              21.9586453061748
            ],
            [
              -156.46776162294972,
              71.38079621760538,
              21.9586453061748
            ],
            [
              -156.48132623439358,
              71.38062624792708,
              1.138645306174803
            ]
          ]
        ]
      },
      "bbox": [
        -156.48181,
        71.38062625,
        1.138645306,
        -156.4677616,
        71.3851456,
        21.95864531
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:15Z",
        "pc:count": 2849565,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90449.86864,
            "count": 2849565,
            "maximum": -90213.59074,
            "minimum": -90709.93074,
            "name": "X",
            "position": 0,
            "stddev": 135.3188054,
            "variance": 18311.1791
          },
          {
            "average": 2377602.903,
            "count": 2849565,
            "maximum": 2377843.381,
            "minimum": 2377369.921,
            "name": "Y",
            "position": 1,
            "stddev": 129.9499918,
            "variance": 16887.00036
          },
          {
            "average": 3.167474366,
            "count": 2849565,
            "maximum": 21.95864531,
            "minimum": 1.138645306,
            "name": "Z",
            "position": 2,
            "stddev": 0.995784038,
            "variance": 0.9915858503
          },
          {
            "average": 22351.95762,
            "count": 2849565,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8950.35369,
            "variance": 80108831.18
          },
          {
            "average": 1.000000351,
            "count": 2849565,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005923940885,
            "variance": 3.509307561e-07
          },
          {
            "average": 1.000000702,
            "count": 2849565,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0008377716072,
            "variance": 7.018612659e-07
          },
          {
            "average": 0.4995660741,
            "count": 2849565,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998994,
            "variance": 0.2499998994
          },
          {
            "average": 0.0004741074515,
            "count": 2849565,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02176885022,
            "variance": 0.0004738828399
          },
          {
            "average": 1.571112433,
            "count": 2849565,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.478799955,
            "variance": 2.186849308
          },
          {
            "average": -0.5193414724,
            "count": 2849565,
            "maximum": 16.36800003,
            "minimum": -16.05599976,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.3212045,
            "variance": 106.5272623
          },
          {
            "average": 0.4536309928,
            "count": 2849565,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4978453597,
            "variance": 0.2478500021
          },
          {
            "average": 405.6332889,
            "count": 2849565,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9592696876,
            "variance": 0.9201983336
          },
          {
            "average": 220414808.5,
            "count": 2849565,
            "maximum": 220415435.8,
            "minimum": 220414083.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 538.5392281,
            "variance": 290024.5002
          },
          {
            "average": 0.4536309928,
            "count": 2849565,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4978453597,
            "variance": 0.2478500021
          },
          {
            "average": 0,
            "count": 2849565,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2849565,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2849565,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2126907089,
            "count": 2849565,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4092107404,
            "variance": 0.16745343
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90709.93074,
          2377369.921,
          1.138645306,
          -90213.59074,
          2377843.381,
          21.95864531
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90709.93073758708,
                2377369.920801217,
                1.138645306174803
              ],
              [
                -90709.93073758708,
                2377843.380801217,
                1.138645306174803
              ],
              [
                -90213.59073758709,
                2377843.380801217,
                21.9586453061748
              ],
              [
                -90213.59073758709,
                2377369.920801217,
                21.9586453061748
              ],
              [
                -90709.93073758708,
                2377369.920801217,
                1.138645306174803
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:15+00:00",
        "end_time": "2018-09-08T03:54:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2446.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2446.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2446.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2446.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.48181,
            71.38062625,
            1.138645306,
            -156.4677616,
            71.3851456,
            21.95864531
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48132623439358,
                  71.38062624792708,
                  1.138645306174803
                ],
                [
                  -156.48181000373185,
                  71.38497559572903,
                  1.138645306174803
                ],
                [
                  -156.4682427525623,
                  71.3851456036077,
                  21.9586453061748
                ],
                [
                  -156.46776162294972,
                  71.38079621760538,
                  21.9586453061748
                ],
                [
                  -156.48132623439358,
                  71.38062624792708,
                  1.138645306174803
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2446.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2446.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:15Z",
            "pc:count": 2849565,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90449.86864,
                "count": 2849565,
                "maximum": -90213.59074,
                "minimum": -90709.93074,
                "name": "X",
                "position": 0,
                "stddev": 135.3188054,
                "variance": 18311.1791
              },
              {
                "average": 2377602.903,
                "count": 2849565,
                "maximum": 2377843.381,
                "minimum": 2377369.921,
                "name": "Y",
                "position": 1,
                "stddev": 129.9499918,
                "variance": 16887.00036
              },
              {
                "average": 3.167474366,
                "count": 2849565,
                "maximum": 21.95864531,
                "minimum": 1.138645306,
                "name": "Z",
                "position": 2,
                "stddev": 0.995784038,
                "variance": 0.9915858503
              },
              {
                "average": 22351.95762,
                "count": 2849565,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8950.35369,
                "variance": 80108831.18
              },
              {
                "average": 1.000000351,
                "count": 2849565,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005923940885,
                "variance": 3.509307561e-07
              },
              {
                "average": 1.000000702,
                "count": 2849565,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0008377716072,
                "variance": 7.018612659e-07
              },
              {
                "average": 0.4995660741,
                "count": 2849565,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998994,
                "variance": 0.2499998994
              },
              {
                "average": 0.0004741074515,
                "count": 2849565,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02176885022,
                "variance": 0.0004738828399
              },
              {
                "average": 1.571112433,
                "count": 2849565,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.478799955,
                "variance": 2.186849308
              },
              {
                "average": -0.5193414724,
                "count": 2849565,
                "maximum": 16.36800003,
                "minimum": -16.05599976,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.3212045,
                "variance": 106.5272623
              },
              {
                "average": 0.4536309928,
                "count": 2849565,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4978453597,
                "variance": 0.2478500021
              },
              {
                "average": 405.6332889,
                "count": 2849565,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9592696876,
                "variance": 0.9201983336
              },
              {
                "average": 220414808.5,
                "count": 2849565,
                "maximum": 220415435.8,
                "minimum": 220414083.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 538.5392281,
                "variance": 290024.5002
              },
              {
                "average": 0.4536309928,
                "count": 2849565,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4978453597,
                "variance": 0.2478500021
              },
              {
                "average": 0,
                "count": 2849565,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2849565,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2849565,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2126907089,
                "count": 2849565,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4092107404,
                "variance": 0.16745343
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90709.93074,
              2377369.921,
              1.138645306,
              -90213.59074,
              2377843.381,
              21.95864531
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90709.93073758708,
                    2377369.920801217,
                    1.138645306174803
                  ],
                  [
                    -90709.93073758708,
                    2377843.380801217,
                    1.138645306174803
                  ],
                  [
                    -90213.59073758709,
                    2377843.380801217,
                    21.9586453061748
                  ],
                  [
                    -90213.59073758709,
                    2377369.920801217,
                    21.9586453061748
                  ],
                  [
                    -90709.93073758708,
                    2377369.920801217,
                    1.138645306174803
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:15+00:00",
            "end_time": "2018-09-08T03:54:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2413.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.38013004570718,
              71.36338997030552,
              0.894061183408928
            ],
            [
              -156.38059381430435,
              71.36773978175935,
              0.894061183408928
            ],
            [
              -156.36733674771006,
              71.3678992180113,
              2.194061183408928
            ],
            [
              -156.3668755573624,
              71.36354937076449,
              2.194061183408928
            ],
            [
              -156.38013004570718,
              71.36338997030552,
              0.894061183408928
            ]
          ]
        ]
      },
      "bbox": [
        -156.3805938,
        71.36338997,
        0.8940611834,
        -156.3668756,
        71.36789922,
        2.194061183
      ],
      "properties": {
        "datetime": "2018-09-08T06:04:46Z",
        "pc:count": 1342027,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86854.70398,
            "count": 1342027,
            "maximum": -86593.96496,
            "minimum": -87079.30496,
            "name": "X",
            "position": 0,
            "stddev": 131.4486489,
            "variance": 17278.7473
          },
          {
            "average": 2375569.66,
            "count": 1342027,
            "maximum": 2375834.129,
            "minimum": 2375360.589,
            "name": "Y",
            "position": 1,
            "stddev": 116.2844225,
            "variance": 13522.06692
          },
          {
            "average": 1.177211388,
            "count": 1342027,
            "maximum": 2.194061183,
            "minimum": 0.8940611834,
            "name": "Z",
            "position": 2,
            "stddev": 0.06033838229,
            "variance": 0.003640720377
          },
          {
            "average": 18048.48071,
            "count": 1342027,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13543.73357,
            "variance": 183432719
          },
          {
            "average": 1,
            "count": 1342027,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1342027,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5005122848,
            "count": 1342027,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999238,
            "variance": 0.2499999238
          },
          {
            "average": 0.000678078757,
            "count": 1342027,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02603112504,
            "variance": 0.0006776194711
          },
          {
            "average": 7.979152431,
            "count": 1342027,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.012340364,
            "variance": 4.04951374
          },
          {
            "average": 0.399071299,
            "count": 1342027,
            "maximum": 16.41600037,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.824062959,
            "variance": 46.56783527
          },
          {
            "average": 0.4833725402,
            "count": 1342027,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997236373,
            "variance": 0.2497237137
          },
          {
            "average": 416.0266358,
            "count": 1342027,
            "maximum": 418,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6734711577,
            "variance": 0.4535634002
          },
          {
            "average": 220420629.9,
            "count": 1342027,
            "maximum": 220421886,
            "minimum": 220419688.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 411.733402,
            "variance": 169524.3944
          },
          {
            "average": 0.4833725402,
            "count": 1342027,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997236373,
            "variance": 0.2497237137
          },
          {
            "average": 0,
            "count": 1342027,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1342027,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1342027,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03040251798,
            "count": 1342027,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1716922446,
            "variance": 0.02947822685
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87079.30496,
          2375360.589,
          0.8940611834,
          -86593.96496,
          2375834.129,
          2.194061183
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87079.30495584341,
                2375360.589212526,
                0.894061183408928
              ],
              [
                -87079.30495584341,
                2375834.129212526,
                0.894061183408928
              ],
              [
                -86593.96495584342,
                2375834.129212526,
                2.194061183408928
              ],
              [
                -86593.96495584342,
                2375360.589212526,
                2.194061183408928
              ],
              [
                -87079.30495584341,
                2375360.589212526,
                0.894061183408928
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:04:46+00:00",
        "end_time": "2018-09-08T05:28:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2413.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2413.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2413.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2413.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3805938,
            71.36338997,
            0.8940611834,
            -156.3668756,
            71.36789922,
            2.194061183
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.38013004570718,
                  71.36338997030552,
                  0.894061183408928
                ],
                [
                  -156.38059381430435,
                  71.36773978175935,
                  0.894061183408928
                ],
                [
                  -156.36733674771006,
                  71.3678992180113,
                  2.194061183408928
                ],
                [
                  -156.3668755573624,
                  71.36354937076449,
                  2.194061183408928
                ],
                [
                  -156.38013004570718,
                  71.36338997030552,
                  0.894061183408928
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2413.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2413.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:04:46Z",
            "pc:count": 1342027,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86854.70398,
                "count": 1342027,
                "maximum": -86593.96496,
                "minimum": -87079.30496,
                "name": "X",
                "position": 0,
                "stddev": 131.4486489,
                "variance": 17278.7473
              },
              {
                "average": 2375569.66,
                "count": 1342027,
                "maximum": 2375834.129,
                "minimum": 2375360.589,
                "name": "Y",
                "position": 1,
                "stddev": 116.2844225,
                "variance": 13522.06692
              },
              {
                "average": 1.177211388,
                "count": 1342027,
                "maximum": 2.194061183,
                "minimum": 0.8940611834,
                "name": "Z",
                "position": 2,
                "stddev": 0.06033838229,
                "variance": 0.003640720377
              },
              {
                "average": 18048.48071,
                "count": 1342027,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13543.73357,
                "variance": 183432719
              },
              {
                "average": 1,
                "count": 1342027,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1342027,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5005122848,
                "count": 1342027,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999238,
                "variance": 0.2499999238
              },
              {
                "average": 0.000678078757,
                "count": 1342027,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02603112504,
                "variance": 0.0006776194711
              },
              {
                "average": 7.979152431,
                "count": 1342027,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.012340364,
                "variance": 4.04951374
              },
              {
                "average": 0.399071299,
                "count": 1342027,
                "maximum": 16.41600037,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.824062959,
                "variance": 46.56783527
              },
              {
                "average": 0.4833725402,
                "count": 1342027,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997236373,
                "variance": 0.2497237137
              },
              {
                "average": 416.0266358,
                "count": 1342027,
                "maximum": 418,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6734711577,
                "variance": 0.4535634002
              },
              {
                "average": 220420629.9,
                "count": 1342027,
                "maximum": 220421886,
                "minimum": 220419688.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 411.733402,
                "variance": 169524.3944
              },
              {
                "average": 0.4833725402,
                "count": 1342027,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997236373,
                "variance": 0.2497237137
              },
              {
                "average": 0,
                "count": 1342027,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1342027,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1342027,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03040251798,
                "count": 1342027,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1716922446,
                "variance": 0.02947822685
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87079.30496,
              2375360.589,
              0.8940611834,
              -86593.96496,
              2375834.129,
              2.194061183
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87079.30495584341,
                    2375360.589212526,
                    0.894061183408928
                  ],
                  [
                    -87079.30495584341,
                    2375834.129212526,
                    0.894061183408928
                  ],
                  [
                    -86593.96495584342,
                    2375834.129212526,
                    2.194061183408928
                  ],
                  [
                    -86593.96495584342,
                    2375360.589212526,
                    2.194061183408928
                  ],
                  [
                    -87079.30495584341,
                    2375360.589212526,
                    0.894061183408928
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:04:46+00:00",
            "end_time": "2018-09-08T05:28:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2456.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48564543291312,
              71.38902116144968,
              0.77370191957726
            ],
            [
              -156.48582165114578,
              71.39060238066787,
              0.77370191957726
            ],
            [
              -156.4805901678188,
              71.39066813803501,
              1.55370191957726
            ],
            [
              -156.4804143197517,
              71.3890869134426,
              1.55370191957726
            ],
            [
              -156.48564543291312,
              71.38902116144968,
              0.77370191957726
            ]
          ]
        ]
      },
      "bbox": [
        -156.4858217,
        71.38902116,
        0.7737019196,
        -156.4804143,
        71.39066814,
        1.55370192
      ],
      "properties": {
        "datetime": "2018-09-08T03:58:19Z",
        "pc:count": 188084,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90719.29166,
            "count": 188084,
            "maximum": -90642.2427,
            "minimum": -90833.5827,
            "name": "X",
            "position": 0,
            "stddev": 45.76534406,
            "variance": 2094.466717
          },
          {
            "average": 2378361.609,
            "count": 188084,
            "maximum": 2378460.506,
            "minimum": 2378288.386,
            "name": "Y",
            "position": 1,
            "stddev": 43.17107915,
            "variance": 1863.742075
          },
          {
            "average": 1.120506432,
            "count": 188084,
            "maximum": 1.55370192,
            "minimum": 0.7737019196,
            "name": "Z",
            "position": 2,
            "stddev": 0.08369904259,
            "variance": 0.007005529731
          },
          {
            "average": 14461.82743,
            "count": 188084,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9370.753854,
            "variance": 87811027.79
          },
          {
            "average": 1,
            "count": 188084,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 188084,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4868941537,
            "count": 188084,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499829536,
            "variance": 0.2498295651
          },
          {
            "average": 0.0005423108824,
            "count": 188084,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02328131575,
            "variance": 0.0005420196631
          },
          {
            "average": 7.71127794,
            "count": 188084,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.324253322,
            "variance": 5.402153503
          },
          {
            "average": 5.422262947,
            "count": 188084,
            "maximum": 10.75199986,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 4.069920711,
            "variance": 16.5642546
          },
          {
            "average": 0.4752344697,
            "count": 188084,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993876194,
            "variance": 0.2493879944
          },
          {
            "average": 403.4555624,
            "count": 188084,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.557710814,
            "variance": 0.311041352
          },
          {
            "average": 220413595,
            "count": 188084,
            "maximum": 220414299.4,
            "minimum": 220412998,
            "name": "GpsTime",
            "position": 12,
            "stddev": 458.2147936,
            "variance": 209960.7971
          },
          {
            "average": 0.4752344697,
            "count": 188084,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993876194,
            "variance": 0.2493879944
          },
          {
            "average": 0,
            "count": 188084,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 188084,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 188084,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03150719891,
            "count": 188084,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1746844514,
            "variance": 0.03051465757
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90833.5827,
          2378288.386,
          0.7737019196,
          -90642.2427,
          2378460.506,
          1.55370192
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90833.58270091645,
                2378288.3862750423,
                0.77370191957726
              ],
              [
                -90833.58270091645,
                2378460.5062750424,
                0.77370191957726
              ],
              [
                -90642.24270091645,
                2378460.5062750424,
                1.55370191957726
              ],
              [
                -90642.24270091645,
                2378288.3862750423,
                1.55370191957726
              ],
              [
                -90833.58270091645,
                2378288.3862750423,
                0.77370191957726
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T03:58:19+00:00",
        "end_time": "2018-09-08T03:36:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2456.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2456.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2456.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2456.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4858217,
            71.38902116,
            0.7737019196,
            -156.4804143,
            71.39066814,
            1.55370192
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48564543291312,
                  71.38902116144968,
                  0.77370191957726
                ],
                [
                  -156.48582165114578,
                  71.39060238066787,
                  0.77370191957726
                ],
                [
                  -156.4805901678188,
                  71.39066813803501,
                  1.55370191957726
                ],
                [
                  -156.4804143197517,
                  71.3890869134426,
                  1.55370191957726
                ],
                [
                  -156.48564543291312,
                  71.38902116144968,
                  0.77370191957726
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2456.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2456.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T03:58:19Z",
            "pc:count": 188084,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90719.29166,
                "count": 188084,
                "maximum": -90642.2427,
                "minimum": -90833.5827,
                "name": "X",
                "position": 0,
                "stddev": 45.76534406,
                "variance": 2094.466717
              },
              {
                "average": 2378361.609,
                "count": 188084,
                "maximum": 2378460.506,
                "minimum": 2378288.386,
                "name": "Y",
                "position": 1,
                "stddev": 43.17107915,
                "variance": 1863.742075
              },
              {
                "average": 1.120506432,
                "count": 188084,
                "maximum": 1.55370192,
                "minimum": 0.7737019196,
                "name": "Z",
                "position": 2,
                "stddev": 0.08369904259,
                "variance": 0.007005529731
              },
              {
                "average": 14461.82743,
                "count": 188084,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9370.753854,
                "variance": 87811027.79
              },
              {
                "average": 1,
                "count": 188084,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 188084,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4868941537,
                "count": 188084,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499829536,
                "variance": 0.2498295651
              },
              {
                "average": 0.0005423108824,
                "count": 188084,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02328131575,
                "variance": 0.0005420196631
              },
              {
                "average": 7.71127794,
                "count": 188084,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.324253322,
                "variance": 5.402153503
              },
              {
                "average": 5.422262947,
                "count": 188084,
                "maximum": 10.75199986,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 4.069920711,
                "variance": 16.5642546
              },
              {
                "average": 0.4752344697,
                "count": 188084,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993876194,
                "variance": 0.2493879944
              },
              {
                "average": 403.4555624,
                "count": 188084,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.557710814,
                "variance": 0.311041352
              },
              {
                "average": 220413595,
                "count": 188084,
                "maximum": 220414299.4,
                "minimum": 220412998,
                "name": "GpsTime",
                "position": 12,
                "stddev": 458.2147936,
                "variance": 209960.7971
              },
              {
                "average": 0.4752344697,
                "count": 188084,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993876194,
                "variance": 0.2493879944
              },
              {
                "average": 0,
                "count": 188084,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 188084,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 188084,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03150719891,
                "count": 188084,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1746844514,
                "variance": 0.03051465757
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90833.5827,
              2378288.386,
              0.7737019196,
              -90642.2427,
              2378460.506,
              1.55370192
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90833.58270091645,
                    2378288.3862750423,
                    0.77370191957726
                  ],
                  [
                    -90833.58270091645,
                    2378460.5062750424,
                    0.77370191957726
                  ],
                  [
                    -90642.24270091645,
                    2378460.5062750424,
                    1.55370191957726
                  ],
                  [
                    -90642.24270091645,
                    2378288.3862750423,
                    1.55370191957726
                  ],
                  [
                    -90833.58270091645,
                    2378288.3862750423,
                    0.77370191957726
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T03:58:19+00:00",
            "end_time": "2018-09-08T03:36:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2457.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48067799761296,
              71.38882059152303,
              0.725257974246542
            ],
            [
              -156.4808871130093,
              71.39070075137683,
              0.725257974246542
            ],
            [
              -156.46783750887778,
              71.39086419335219,
              1.565257974246542
            ],
            [
              -156.467629491409,
              71.38898401761524,
              1.565257974246542
            ],
            [
              -156.48067799761296,
              71.38882059152303,
              0.725257974246542
            ]
          ]
        ]
      },
      "bbox": [
        -156.4808871,
        71.38882059,
        0.7252579742,
        -156.4676295,
        71.39086419,
        1.565257974
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:50Z",
        "pc:count": 753037,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90420.9493,
            "count": 753037,
            "maximum": -90175.67571,
            "minimum": -90652.95571,
            "name": "X",
            "position": 0,
            "stddev": 131.2220275,
            "variance": 17219.2205
          },
          {
            "average": 2378362.492,
            "count": 753037,
            "maximum": 2378464.457,
            "minimum": 2378259.797,
            "name": "Y",
            "position": 1,
            "stddev": 51.8423787,
            "variance": 2687.632229
          },
          {
            "average": 1.144070835,
            "count": 753037,
            "maximum": 1.565257974,
            "minimum": 0.7252579742,
            "name": "Z",
            "position": 2,
            "stddev": 0.08809103543,
            "variance": 0.007760030523
          },
          {
            "average": 12866.50502,
            "count": 753037,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9734.560826,
            "variance": 94761674.48
          },
          {
            "average": 1,
            "count": 753037,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 753037,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4995982933,
            "count": 753037,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000001706,
            "variance": 0.2500001706
          },
          {
            "average": 0.0005882845066,
            "count": 753037,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02424745778,
            "variance": 0.0005879392087
          },
          {
            "average": 6.99070962,
            "count": 753037,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.037268926,
            "variance": 9.225002529
          },
          {
            "average": 0.4436490692,
            "count": 753037,
            "maximum": 16.37400055,
            "minimum": -15.97200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.445577352,
            "variance": 71.32777681
          },
          {
            "average": 0.4862855344,
            "count": 753037,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998122099,
            "variance": 0.2498122452
          },
          {
            "average": 403.9749627,
            "count": 753037,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7419547503,
            "variance": 0.5504968515
          },
          {
            "average": 220413889.8,
            "count": 753037,
            "maximum": 220415230,
            "minimum": 220413179.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 456.6235388,
            "variance": 208505.0562
          },
          {
            "average": 0.4862855344,
            "count": 753037,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998122099,
            "variance": 0.2498122452
          },
          {
            "average": 0,
            "count": 753037,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 753037,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 753037,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07615163664,
            "count": 753037,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2652407554,
            "variance": 0.0703526583
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90652.95571,
          2378259.797,
          0.7252579742,
          -90175.67571,
          2378464.457,
          1.565257974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90652.95571447424,
                2378259.7966578365,
                0.725257974246542
              ],
              [
                -90652.95571447424,
                2378464.4566578367,
                0.725257974246542
              ],
              [
                -90175.67571447424,
                2378464.4566578367,
                1.565257974246542
              ],
              [
                -90175.67571447424,
                2378259.7966578365,
                1.565257974246542
              ],
              [
                -90652.95571447424,
                2378259.7966578365,
                0.725257974246542
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:50+00:00",
        "end_time": "2018-09-08T03:39:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2457.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2457.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2457.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2457.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4808871,
            71.38882059,
            0.7252579742,
            -156.4676295,
            71.39086419,
            1.565257974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48067799761296,
                  71.38882059152303,
                  0.725257974246542
                ],
                [
                  -156.4808871130093,
                  71.39070075137683,
                  0.725257974246542
                ],
                [
                  -156.46783750887778,
                  71.39086419335219,
                  1.565257974246542
                ],
                [
                  -156.467629491409,
                  71.38898401761524,
                  1.565257974246542
                ],
                [
                  -156.48067799761296,
                  71.38882059152303,
                  0.725257974246542
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2457.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2457.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:50Z",
            "pc:count": 753037,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90420.9493,
                "count": 753037,
                "maximum": -90175.67571,
                "minimum": -90652.95571,
                "name": "X",
                "position": 0,
                "stddev": 131.2220275,
                "variance": 17219.2205
              },
              {
                "average": 2378362.492,
                "count": 753037,
                "maximum": 2378464.457,
                "minimum": 2378259.797,
                "name": "Y",
                "position": 1,
                "stddev": 51.8423787,
                "variance": 2687.632229
              },
              {
                "average": 1.144070835,
                "count": 753037,
                "maximum": 1.565257974,
                "minimum": 0.7252579742,
                "name": "Z",
                "position": 2,
                "stddev": 0.08809103543,
                "variance": 0.007760030523
              },
              {
                "average": 12866.50502,
                "count": 753037,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9734.560826,
                "variance": 94761674.48
              },
              {
                "average": 1,
                "count": 753037,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 753037,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4995982933,
                "count": 753037,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000001706,
                "variance": 0.2500001706
              },
              {
                "average": 0.0005882845066,
                "count": 753037,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02424745778,
                "variance": 0.0005879392087
              },
              {
                "average": 6.99070962,
                "count": 753037,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.037268926,
                "variance": 9.225002529
              },
              {
                "average": 0.4436490692,
                "count": 753037,
                "maximum": 16.37400055,
                "minimum": -15.97200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.445577352,
                "variance": 71.32777681
              },
              {
                "average": 0.4862855344,
                "count": 753037,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998122099,
                "variance": 0.2498122452
              },
              {
                "average": 403.9749627,
                "count": 753037,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7419547503,
                "variance": 0.5504968515
              },
              {
                "average": 220413889.8,
                "count": 753037,
                "maximum": 220415230,
                "minimum": 220413179.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 456.6235388,
                "variance": 208505.0562
              },
              {
                "average": 0.4862855344,
                "count": 753037,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998122099,
                "variance": 0.2498122452
              },
              {
                "average": 0,
                "count": 753037,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 753037,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 753037,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07615163664,
                "count": 753037,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2652407554,
                "variance": 0.0703526583
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90652.95571,
              2378259.797,
              0.7252579742,
              -90175.67571,
              2378464.457,
              1.565257974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90652.95571447424,
                    2378259.7966578365,
                    0.725257974246542
                  ],
                  [
                    -90652.95571447424,
                    2378464.4566578367,
                    0.725257974246542
                  ],
                  [
                    -90175.67571447424,
                    2378464.4566578367,
                    1.565257974246542
                  ],
                  [
                    -90175.67571447424,
                    2378259.7966578365,
                    1.565257974246542
                  ],
                  [
                    -90652.95571447424,
                    2378259.7966578365,
                    0.725257974246542
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:50+00:00",
            "end_time": "2018-09-08T03:39:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2223.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6406641833672,
              71.3039596349103,
              2.789513305352459
            ],
            [
              -156.64117745588686,
              71.30830814368815,
              2.789513305352459
            ],
            [
              -156.62767697430863,
              71.30848874547712,
              3.949513305352459
            ],
            [
              -156.6271663199102,
              71.30414019630591,
              3.949513305352459
            ],
            [
              -156.6406641833672,
              71.3039596349103,
              2.789513305352459
            ]
          ]
        ]
      },
      "bbox": [
        -156.6411775,
        71.30395963,
        2.789513305,
        -156.6271663,
        71.30848875,
        3.949513305
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:03Z",
        "pc:count": 3128987,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -96606.45046,
            "count": 3128987,
            "maximum": -96367.85631,
            "minimum": -96863.49631,
            "name": "X",
            "position": 0,
            "stddev": 131.3066426,
            "variance": 17241.4344
          },
          {
            "average": 2369497.694,
            "count": 3128987,
            "maximum": 2369732.562,
            "minimum": 2369258.902,
            "name": "Y",
            "position": 1,
            "stddev": 127.8096738,
            "variance": 16335.31272
          },
          {
            "average": 3.222676291,
            "count": 3128987,
            "maximum": 3.949513305,
            "minimum": 2.789513305,
            "name": "Z",
            "position": 2,
            "stddev": 0.2824720244,
            "variance": 0.07979044455
          },
          {
            "average": 28203.47922,
            "count": 3128987,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10812.57658,
            "variance": 116911812.3
          },
          {
            "average": 1,
            "count": 3128987,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3128987,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5020807054,
            "count": 3128987,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999957505,
            "variance": 0.2499957506
          },
          {
            "average": 0.0004704397941,
            "count": 3128987,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02168452515,
            "variance": 0.0004702186308
          },
          {
            "average": 1.312694172,
            "count": 3128987,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7600443012,
            "variance": 0.5776673398
          },
          {
            "average": 1.377788382,
            "count": 3128987,
            "maximum": 16.37999916,
            "minimum": -15.82199955,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.66909084,
            "variance": 113.8294993
          },
          {
            "average": 0.5320364067,
            "count": 3128987,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989726929,
            "variance": 0.2489737482
          },
          {
            "average": 412.3335904,
            "count": 3128987,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9897399614,
            "variance": 0.9795851911
          },
          {
            "average": 220418600.6,
            "count": 3128987,
            "maximum": 220419503.6,
            "minimum": 220417303.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 540.0682267,
            "variance": 291673.6894
          },
          {
            "average": 0.5320364067,
            "count": 3128987,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989726929,
            "variance": 0.2489737482
          },
          {
            "average": 0,
            "count": 3128987,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3128987,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3128987,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.271526216,
            "count": 3128987,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4447468867,
            "variance": 0.1977997932
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -96863.49631,
          2369258.902,
          2.789513305,
          -96367.85631,
          2369732.562,
          3.949513305
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -96863.49631023721,
                2369258.902269519,
                2.789513305352459
              ],
              [
                -96863.49631023721,
                2369732.562269519,
                2.789513305352459
              ],
              [
                -96367.8563102372,
                2369732.562269519,
                3.949513305352459
              ],
              [
                -96367.8563102372,
                2369258.902269519,
                3.949513305352459
              ],
              [
                -96863.49631023721,
                2369258.902269519,
                2.789513305352459
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:03+00:00",
        "end_time": "2018-09-08T04:48:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2223.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2223.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2223.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2223.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6411775,
            71.30395963,
            2.789513305,
            -156.6271663,
            71.30848875,
            3.949513305
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6406641833672,
                  71.3039596349103,
                  2.789513305352459
                ],
                [
                  -156.64117745588686,
                  71.30830814368815,
                  2.789513305352459
                ],
                [
                  -156.62767697430863,
                  71.30848874547712,
                  3.949513305352459
                ],
                [
                  -156.6271663199102,
                  71.30414019630591,
                  3.949513305352459
                ],
                [
                  -156.6406641833672,
                  71.3039596349103,
                  2.789513305352459
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2223.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2223.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:03Z",
            "pc:count": 3128987,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -96606.45046,
                "count": 3128987,
                "maximum": -96367.85631,
                "minimum": -96863.49631,
                "name": "X",
                "position": 0,
                "stddev": 131.3066426,
                "variance": 17241.4344
              },
              {
                "average": 2369497.694,
                "count": 3128987,
                "maximum": 2369732.562,
                "minimum": 2369258.902,
                "name": "Y",
                "position": 1,
                "stddev": 127.8096738,
                "variance": 16335.31272
              },
              {
                "average": 3.222676291,
                "count": 3128987,
                "maximum": 3.949513305,
                "minimum": 2.789513305,
                "name": "Z",
                "position": 2,
                "stddev": 0.2824720244,
                "variance": 0.07979044455
              },
              {
                "average": 28203.47922,
                "count": 3128987,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10812.57658,
                "variance": 116911812.3
              },
              {
                "average": 1,
                "count": 3128987,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3128987,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5020807054,
                "count": 3128987,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999957505,
                "variance": 0.2499957506
              },
              {
                "average": 0.0004704397941,
                "count": 3128987,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02168452515,
                "variance": 0.0004702186308
              },
              {
                "average": 1.312694172,
                "count": 3128987,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7600443012,
                "variance": 0.5776673398
              },
              {
                "average": 1.377788382,
                "count": 3128987,
                "maximum": 16.37999916,
                "minimum": -15.82199955,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.66909084,
                "variance": 113.8294993
              },
              {
                "average": 0.5320364067,
                "count": 3128987,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989726929,
                "variance": 0.2489737482
              },
              {
                "average": 412.3335904,
                "count": 3128987,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9897399614,
                "variance": 0.9795851911
              },
              {
                "average": 220418600.6,
                "count": 3128987,
                "maximum": 220419503.6,
                "minimum": 220417303.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 540.0682267,
                "variance": 291673.6894
              },
              {
                "average": 0.5320364067,
                "count": 3128987,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989726929,
                "variance": 0.2489737482
              },
              {
                "average": 0,
                "count": 3128987,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3128987,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3128987,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.271526216,
                "count": 3128987,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4447468867,
                "variance": 0.1977997932
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -96863.49631,
              2369258.902,
              2.789513305,
              -96367.85631,
              2369732.562,
              3.949513305
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -96863.49631023721,
                    2369258.902269519,
                    2.789513305352459
                  ],
                  [
                    -96863.49631023721,
                    2369732.562269519,
                    2.789513305352459
                  ],
                  [
                    -96367.8563102372,
                    2369732.562269519,
                    3.949513305352459
                  ],
                  [
                    -96367.8563102372,
                    2369258.902269519,
                    3.949513305352459
                  ],
                  [
                    -96863.49631023721,
                    2369258.902269519,
                    2.789513305352459
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:03+00:00",
            "end_time": "2018-09-08T04:48:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2265.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56344011245272,
              71.31159412126176,
              0.885861591096694
            ],
            [
              -156.56393745768946,
              71.31593350423498,
              0.885861591096694
            ],
            [
              -156.55099418648837,
              71.31610154007566,
              4.725861591096694
            ],
            [
              -156.55049934699784,
              71.31176211958187,
              4.725861591096694
            ],
            [
              -156.56344011245272,
              71.31159412126176,
              0.885861591096694
            ]
          ]
        ]
      },
      "bbox": [
        -156.5639375,
        71.31159412,
        0.8858615911,
        -156.5504993,
        71.31610154,
        4.725861591
      ],
      "properties": {
        "datetime": "2018-09-11T17:33:21Z",
        "pc:count": 1370325,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93839.28368,
            "count": 1370325,
            "maximum": -93525.16541,
            "minimum": -94000.16541,
            "name": "X",
            "position": 0,
            "stddev": 113.6053087,
            "variance": 12906.16616
          },
          {
            "average": 2370247.299,
            "count": 1370325,
            "maximum": 2370450.832,
            "minimum": 2369978.212,
            "name": "Y",
            "position": 1,
            "stddev": 134.2619515,
            "variance": 18026.27163
          },
          {
            "average": 2.17929034,
            "count": 1370325,
            "maximum": 4.725861591,
            "minimum": 0.8858615911,
            "name": "Z",
            "position": 2,
            "stddev": 1.259698289,
            "variance": 1.586839778
          },
          {
            "average": 27089.17456,
            "count": 1370325,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 19124.37574,
            "variance": 365741747.5
          },
          {
            "average": 1.000031379,
            "count": 1370325,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005601647572,
            "variance": 3.137845552e-05
          },
          {
            "average": 1.000062759,
            "count": 1370325,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007921801671,
            "variance": 6.275494171e-05
          },
          {
            "average": 0.502793133,
            "count": 1370325,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999923808,
            "variance": 0.2499923808
          },
          {
            "average": 0.0006815901337,
            "count": 1370325,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02609839201,
            "variance": 0.0006811260657
          },
          {
            "average": 4.784838633,
            "count": 1370325,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.704127619,
            "variance": 13.72056142
          },
          {
            "average": -2.387745744,
            "count": 1370325,
            "maximum": 16.08600044,
            "minimum": -19.37999916,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.129614438,
            "variance": 83.34985978
          },
          {
            "average": 0.4853264736,
            "count": 1370325,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997848236,
            "variance": 0.2497848699
          },
          {
            "average": 431.4012289,
            "count": 1370325,
            "maximum": 453,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.57317599,
            "variance": 344.9628662
          },
          {
            "average": 220550405.4,
            "count": 1370325,
            "maximum": 220722401.8,
            "minimum": 220419538.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 149643.1768,
            "variance": 22393080350.0
          },
          {
            "average": 0.4853264736,
            "count": 1370325,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997848236,
            "variance": 0.2497848699
          },
          {
            "average": 0,
            "count": 1370325,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1370325,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1370325,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08958531735,
            "count": 1370325,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2855868481,
            "variance": 0.08155984779
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94000.16541,
          2369978.212,
          0.8858615911,
          -93525.16541,
          2370450.832,
          4.725861591
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94000.16540939212,
                2369978.21212914,
                0.885861591096694
              ],
              [
                -94000.16540939212,
                2370450.83212914,
                0.885861591096694
              ],
              [
                -93525.16540939212,
                2370450.83212914,
                4.725861591096694
              ],
              [
                -93525.16540939212,
                2369978.21212914,
                4.725861591096694
              ],
              [
                -94000.16540939212,
                2369978.21212914,
                0.885861591096694
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:33:21+00:00",
        "end_time": "2018-09-08T05:25:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2265.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2265.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2265.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2265.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5639375,
            71.31159412,
            0.8858615911,
            -156.5504993,
            71.31610154,
            4.725861591
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56344011245272,
                  71.31159412126176,
                  0.885861591096694
                ],
                [
                  -156.56393745768946,
                  71.31593350423498,
                  0.885861591096694
                ],
                [
                  -156.55099418648837,
                  71.31610154007566,
                  4.725861591096694
                ],
                [
                  -156.55049934699784,
                  71.31176211958187,
                  4.725861591096694
                ],
                [
                  -156.56344011245272,
                  71.31159412126176,
                  0.885861591096694
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2265.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2265.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:33:21Z",
            "pc:count": 1370325,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93839.28368,
                "count": 1370325,
                "maximum": -93525.16541,
                "minimum": -94000.16541,
                "name": "X",
                "position": 0,
                "stddev": 113.6053087,
                "variance": 12906.16616
              },
              {
                "average": 2370247.299,
                "count": 1370325,
                "maximum": 2370450.832,
                "minimum": 2369978.212,
                "name": "Y",
                "position": 1,
                "stddev": 134.2619515,
                "variance": 18026.27163
              },
              {
                "average": 2.17929034,
                "count": 1370325,
                "maximum": 4.725861591,
                "minimum": 0.8858615911,
                "name": "Z",
                "position": 2,
                "stddev": 1.259698289,
                "variance": 1.586839778
              },
              {
                "average": 27089.17456,
                "count": 1370325,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 19124.37574,
                "variance": 365741747.5
              },
              {
                "average": 1.000031379,
                "count": 1370325,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005601647572,
                "variance": 3.137845552e-05
              },
              {
                "average": 1.000062759,
                "count": 1370325,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007921801671,
                "variance": 6.275494171e-05
              },
              {
                "average": 0.502793133,
                "count": 1370325,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999923808,
                "variance": 0.2499923808
              },
              {
                "average": 0.0006815901337,
                "count": 1370325,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02609839201,
                "variance": 0.0006811260657
              },
              {
                "average": 4.784838633,
                "count": 1370325,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.704127619,
                "variance": 13.72056142
              },
              {
                "average": -2.387745744,
                "count": 1370325,
                "maximum": 16.08600044,
                "minimum": -19.37999916,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.129614438,
                "variance": 83.34985978
              },
              {
                "average": 0.4853264736,
                "count": 1370325,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997848236,
                "variance": 0.2497848699
              },
              {
                "average": 431.4012289,
                "count": 1370325,
                "maximum": 453,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.57317599,
                "variance": 344.9628662
              },
              {
                "average": 220550405.4,
                "count": 1370325,
                "maximum": 220722401.8,
                "minimum": 220419538.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 149643.1768,
                "variance": 22393080350.0
              },
              {
                "average": 0.4853264736,
                "count": 1370325,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997848236,
                "variance": 0.2497848699
              },
              {
                "average": 0,
                "count": 1370325,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1370325,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1370325,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08958531735,
                "count": 1370325,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2855868481,
                "variance": 0.08155984779
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94000.16541,
              2369978.212,
              0.8858615911,
              -93525.16541,
              2370450.832,
              4.725861591
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94000.16540939212,
                    2369978.21212914,
                    0.885861591096694
                  ],
                  [
                    -94000.16540939212,
                    2370450.83212914,
                    0.885861591096694
                  ],
                  [
                    -93525.16540939212,
                    2370450.83212914,
                    4.725861591096694
                  ],
                  [
                    -93525.16540939212,
                    2369978.21212914,
                    4.725861591096694
                  ],
                  [
                    -94000.16540939212,
                    2369978.21212914,
                    0.885861591096694
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:33:21+00:00",
            "end_time": "2018-09-08T05:25:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2321.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57500849472115,
              71.32806859537183,
              0.961263824374324
            ],
            [
              -156.57550950937673,
              71.33241761706473,
              0.961263824374324
            ],
            [
              -156.5619835874348,
              71.33259388227417,
              3.821263824374324
            ],
            [
              -156.5614851987455,
              71.32824482109817,
              3.821263824374324
            ],
            [
              -156.57500849472115,
              71.32806859537183,
              0.961263824374324
            ]
          ]
        ]
      },
      "bbox": [
        -156.5755095,
        71.3280686,
        0.9612638244,
        -156.5614852,
        71.33259388,
        3.821263824
      ],
      "properties": {
        "datetime": "2018-09-08T05:15:12Z",
        "pc:count": 2373299,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94139.69586,
            "count": 2373299,
            "maximum": -93858.64071,
            "minimum": -94354.66071,
            "name": "X",
            "position": 0,
            "stddev": 128.9971277,
            "variance": 16640.25896
          },
          {
            "average": 2372022.019,
            "count": 2373299,
            "maximum": 2372259.788,
            "minimum": 2371786.168,
            "name": "Y",
            "position": 1,
            "stddev": 125.301134,
            "variance": 15700.37418
          },
          {
            "average": 2.505374057,
            "count": 2373299,
            "maximum": 3.821263824,
            "minimum": 0.9612638244,
            "name": "Z",
            "position": 2,
            "stddev": 0.8528047767,
            "variance": 0.7272759872
          },
          {
            "average": 30605.37478,
            "count": 2373299,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13924.69663,
            "variance": 193897176.3
          },
          {
            "average": 1,
            "count": 2373299,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2373299,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4980737783,
            "count": 2373299,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499996395,
            "variance": 0.249996395
          },
          {
            "average": 0.0004858216348,
            "count": 2373299,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02203601182,
            "variance": 0.0004855858167
          },
          {
            "average": 3.209249235,
            "count": 2373299,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.294770313,
            "variance": 10.85551141
          },
          {
            "average": 0.9564185506,
            "count": 2373299,
            "maximum": 16.33200073,
            "minimum": -15.8579998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.682194064,
            "variance": 93.7448819
          },
          {
            "average": 0.4900157966,
            "count": 2373299,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999004111,
            "variance": 0.249900421
          },
          {
            "average": 411.0937901,
            "count": 2373299,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8551342559,
            "variance": 0.7312545957
          },
          {
            "average": 220417929.3,
            "count": 2373299,
            "maximum": 220418912.1,
            "minimum": 220416687.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 483.7906637,
            "variance": 234053.4063
          },
          {
            "average": 0.4900157966,
            "count": 2373299,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999004111,
            "variance": 0.249900421
          },
          {
            "average": 0,
            "count": 2373299,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2373299,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2373299,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1885223901,
            "count": 2373299,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3911288317,
            "variance": 0.152981763
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94354.66071,
          2371786.168,
          0.9612638244,
          -93858.64071,
          2372259.788,
          3.821263824
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94354.6607124261,
                2371786.1677013338,
                0.961263824374324
              ],
              [
                -94354.6607124261,
                2372259.787701334,
                0.961263824374324
              ],
              [
                -93858.64071242612,
                2372259.787701334,
                3.821263824374324
              ],
              [
                -93858.64071242612,
                2371786.1677013338,
                3.821263824374324
              ],
              [
                -94354.6607124261,
                2371786.1677013338,
                0.961263824374324
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:15:12+00:00",
        "end_time": "2018-09-08T04:38:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2321.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2321.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2321.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2321.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5755095,
            71.3280686,
            0.9612638244,
            -156.5614852,
            71.33259388,
            3.821263824
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57500849472115,
                  71.32806859537183,
                  0.961263824374324
                ],
                [
                  -156.57550950937673,
                  71.33241761706473,
                  0.961263824374324
                ],
                [
                  -156.5619835874348,
                  71.33259388227417,
                  3.821263824374324
                ],
                [
                  -156.5614851987455,
                  71.32824482109817,
                  3.821263824374324
                ],
                [
                  -156.57500849472115,
                  71.32806859537183,
                  0.961263824374324
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2321.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2321.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:15:12Z",
            "pc:count": 2373299,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94139.69586,
                "count": 2373299,
                "maximum": -93858.64071,
                "minimum": -94354.66071,
                "name": "X",
                "position": 0,
                "stddev": 128.9971277,
                "variance": 16640.25896
              },
              {
                "average": 2372022.019,
                "count": 2373299,
                "maximum": 2372259.788,
                "minimum": 2371786.168,
                "name": "Y",
                "position": 1,
                "stddev": 125.301134,
                "variance": 15700.37418
              },
              {
                "average": 2.505374057,
                "count": 2373299,
                "maximum": 3.821263824,
                "minimum": 0.9612638244,
                "name": "Z",
                "position": 2,
                "stddev": 0.8528047767,
                "variance": 0.7272759872
              },
              {
                "average": 30605.37478,
                "count": 2373299,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13924.69663,
                "variance": 193897176.3
              },
              {
                "average": 1,
                "count": 2373299,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2373299,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4980737783,
                "count": 2373299,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499996395,
                "variance": 0.249996395
              },
              {
                "average": 0.0004858216348,
                "count": 2373299,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02203601182,
                "variance": 0.0004855858167
              },
              {
                "average": 3.209249235,
                "count": 2373299,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.294770313,
                "variance": 10.85551141
              },
              {
                "average": 0.9564185506,
                "count": 2373299,
                "maximum": 16.33200073,
                "minimum": -15.8579998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.682194064,
                "variance": 93.7448819
              },
              {
                "average": 0.4900157966,
                "count": 2373299,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999004111,
                "variance": 0.249900421
              },
              {
                "average": 411.0937901,
                "count": 2373299,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8551342559,
                "variance": 0.7312545957
              },
              {
                "average": 220417929.3,
                "count": 2373299,
                "maximum": 220418912.1,
                "minimum": 220416687.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 483.7906637,
                "variance": 234053.4063
              },
              {
                "average": 0.4900157966,
                "count": 2373299,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999004111,
                "variance": 0.249900421
              },
              {
                "average": 0,
                "count": 2373299,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2373299,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2373299,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1885223901,
                "count": 2373299,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3911288317,
                "variance": 0.152981763
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94354.66071,
              2371786.168,
              0.9612638244,
              -93858.64071,
              2372259.788,
              3.821263824
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94354.6607124261,
                    2371786.1677013338,
                    0.961263824374324
                  ],
                  [
                    -94354.6607124261,
                    2372259.787701334,
                    0.961263824374324
                  ],
                  [
                    -93858.64071242612,
                    2372259.787701334,
                    3.821263824374324
                  ],
                  [
                    -93858.64071242612,
                    2371786.1677013338,
                    3.821263824374324
                  ],
                  [
                    -94354.6607124261,
                    2371786.1677013338,
                    0.961263824374324
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:15:12+00:00",
            "end_time": "2018-09-08T04:38:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2277.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60147104025953,
              71.3159699027405,
              3.780509381905118
            ],
            [
              -156.60197694872613,
              71.32031868315467,
              3.780509381905118
            ],
            [
              -156.58845909491063,
              71.32049674207724,
              26.800509381905115
            ],
            [
              -156.58795580941367,
              71.31614792180828,
              26.800509381905115
            ],
            [
              -156.60147104025953,
              71.3159699027405,
              3.780509381905118
            ]
          ]
        ]
      },
      "bbox": [
        -156.6019769,
        71.3159699,
        3.780509382,
        -156.5879558,
        71.32049674,
        26.80050938
      ],
      "properties": {
        "datetime": "2018-09-08T05:25:35Z",
        "pc:count": 3088117,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95129.28704,
            "count": 3088117,
            "maximum": -94879.38361,
            "minimum": -95375.38361,
            "name": "X",
            "position": 0,
            "stddev": 135.651247,
            "variance": 18401.26082
          },
          {
            "average": 2370741.666,
            "count": 3088117,
            "maximum": 2370981.945,
            "minimum": 2370508.305,
            "name": "Y",
            "position": 1,
            "stddev": 128.7123103,
            "variance": 16566.85883
          },
          {
            "average": 4.446398518,
            "count": 3088117,
            "maximum": 26.80050938,
            "minimum": 3.780509382,
            "name": "Z",
            "position": 2,
            "stddev": 0.4992774547,
            "variance": 0.2492779767
          },
          {
            "average": 39410.67855,
            "count": 3088117,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13547.10827,
            "variance": 183524142.4
          },
          {
            "average": 1.000002267,
            "count": 3088117,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001505572678,
            "variance": 2.26674909e-06
          },
          {
            "average": 1.000004534,
            "count": 3088117,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002129198888,
            "variance": 4.533487904e-06
          },
          {
            "average": 0.5016027566,
            "count": 3088117,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999975121,
            "variance": 0.2499975121
          },
          {
            "average": 0.0004381310682,
            "count": 3088117,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02092699814,
            "variance": 0.0004379392512
          },
          {
            "average": 1.284361311,
            "count": 3088117,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4514549132,
            "variance": 0.2038115387
          },
          {
            "average": 1.139848961,
            "count": 3088117,
            "maximum": 16.49399948,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59792346,
            "variance": 112.3159816
          },
          {
            "average": 0.5176996208,
            "count": 3088117,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996867061,
            "variance": 0.2496868043
          },
          {
            "average": 412.1711966,
            "count": 3088117,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9618089928,
            "variance": 0.9250765385
          },
          {
            "average": 220418504.4,
            "count": 3088117,
            "maximum": 220419535.6,
            "minimum": 220417337.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.1405652,
            "variance": 284238.8623
          },
          {
            "average": 0.5176996208,
            "count": 3088117,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996867061,
            "variance": 0.2496868043
          },
          {
            "average": 0,
            "count": 3088117,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3088117,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3088117,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2622452452,
            "count": 3088117,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4398553617,
            "variance": 0.1934727392
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95375.38361,
          2370508.305,
          3.780509382,
          -94879.38361,
          2370981.945,
          26.80050938
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95375.3836060247,
                2370508.3051902405,
                3.780509381905118
              ],
              [
                -95375.3836060247,
                2370981.94519024,
                3.780509381905118
              ],
              [
                -94879.3836060247,
                2370981.94519024,
                26.800509381905115
              ],
              [
                -94879.3836060247,
                2370508.3051902405,
                26.800509381905115
              ],
              [
                -95375.3836060247,
                2370508.3051902405,
                3.780509381905118
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:25:35+00:00",
        "end_time": "2018-09-08T04:48:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2277.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2277.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2277.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2277.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6019769,
            71.3159699,
            3.780509382,
            -156.5879558,
            71.32049674,
            26.80050938
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60147104025953,
                  71.3159699027405,
                  3.780509381905118
                ],
                [
                  -156.60197694872613,
                  71.32031868315467,
                  3.780509381905118
                ],
                [
                  -156.58845909491063,
                  71.32049674207724,
                  26.800509381905115
                ],
                [
                  -156.58795580941367,
                  71.31614792180828,
                  26.800509381905115
                ],
                [
                  -156.60147104025953,
                  71.3159699027405,
                  3.780509381905118
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2277.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2277.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:25:35Z",
            "pc:count": 3088117,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95129.28704,
                "count": 3088117,
                "maximum": -94879.38361,
                "minimum": -95375.38361,
                "name": "X",
                "position": 0,
                "stddev": 135.651247,
                "variance": 18401.26082
              },
              {
                "average": 2370741.666,
                "count": 3088117,
                "maximum": 2370981.945,
                "minimum": 2370508.305,
                "name": "Y",
                "position": 1,
                "stddev": 128.7123103,
                "variance": 16566.85883
              },
              {
                "average": 4.446398518,
                "count": 3088117,
                "maximum": 26.80050938,
                "minimum": 3.780509382,
                "name": "Z",
                "position": 2,
                "stddev": 0.4992774547,
                "variance": 0.2492779767
              },
              {
                "average": 39410.67855,
                "count": 3088117,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13547.10827,
                "variance": 183524142.4
              },
              {
                "average": 1.000002267,
                "count": 3088117,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001505572678,
                "variance": 2.26674909e-06
              },
              {
                "average": 1.000004534,
                "count": 3088117,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002129198888,
                "variance": 4.533487904e-06
              },
              {
                "average": 0.5016027566,
                "count": 3088117,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999975121,
                "variance": 0.2499975121
              },
              {
                "average": 0.0004381310682,
                "count": 3088117,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02092699814,
                "variance": 0.0004379392512
              },
              {
                "average": 1.284361311,
                "count": 3088117,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4514549132,
                "variance": 0.2038115387
              },
              {
                "average": 1.139848961,
                "count": 3088117,
                "maximum": 16.49399948,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59792346,
                "variance": 112.3159816
              },
              {
                "average": 0.5176996208,
                "count": 3088117,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996867061,
                "variance": 0.2496868043
              },
              {
                "average": 412.1711966,
                "count": 3088117,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9618089928,
                "variance": 0.9250765385
              },
              {
                "average": 220418504.4,
                "count": 3088117,
                "maximum": 220419535.6,
                "minimum": 220417337.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.1405652,
                "variance": 284238.8623
              },
              {
                "average": 0.5176996208,
                "count": 3088117,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996867061,
                "variance": 0.2496868043
              },
              {
                "average": 0,
                "count": 3088117,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3088117,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3088117,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2622452452,
                "count": 3088117,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4398553617,
                "variance": 0.1934727392
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95375.38361,
              2370508.305,
              3.780509382,
              -94879.38361,
              2370981.945,
              26.80050938
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95375.3836060247,
                    2370508.3051902405,
                    3.780509381905118
                  ],
                  [
                    -95375.3836060247,
                    2370981.94519024,
                    3.780509381905118
                  ],
                  [
                    -94879.3836060247,
                    2370981.94519024,
                    26.800509381905115
                  ],
                  [
                    -94879.3836060247,
                    2370508.3051902405,
                    26.800509381905115
                  ],
                  [
                    -95375.3836060247,
                    2370508.3051902405,
                    3.780509381905118
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:25:35+00:00",
            "end_time": "2018-09-08T04:48:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2414.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.3673192622463,
              71.36327983267687,
              0.891734758748703
            ],
            [
              -156.36761199482035,
              71.36604051459902,
              0.891734758748703
            ],
            [
              -156.3547278519435,
              71.36619463995538,
              1.431734758748703
            ],
            [
              -156.35443670969246,
              71.36343393607353,
              1.431734758748703
            ],
            [
              -156.3673192622463,
              71.36327983267687,
              0.891734758748703
            ]
          ]
        ]
      },
      "bbox": [
        -156.367612,
        71.36327983,
        0.8917347587,
        -156.3544367,
        71.36619464,
        1.431734759
      ],
      "properties": {
        "datetime": "2018-09-08T06:07:03Z",
        "pc:count": 610282,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86413.41381,
            "count": 610282,
            "maximum": -86139.51647,
            "minimum": -86611.23647,
            "name": "X",
            "position": 0,
            "stddev": 124.9865686,
            "variance": 15621.64234
          },
          {
            "average": 2375440.084,
            "count": 610282,
            "maximum": 2375632.402,
            "minimum": 2375331.862,
            "name": "Y",
            "position": 1,
            "stddev": 66.78734615,
            "variance": 4460.549605
          },
          {
            "average": 1.154650313,
            "count": 610282,
            "maximum": 1.431734759,
            "minimum": 0.8917347587,
            "name": "Z",
            "position": 2,
            "stddev": 0.0524453366,
            "variance": 0.002750513331
          },
          {
            "average": 20981.2277,
            "count": 610282,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15001.21092,
            "variance": 225036329
          },
          {
            "average": 1,
            "count": 610282,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 610282,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4971177259,
            "count": 610282,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999921021,
            "variance": 0.2499921021
          },
          {
            "average": 0.0006816520887,
            "count": 610282,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02609958918,
            "variance": 0.0006811885553
          },
          {
            "average": 8.165998669,
            "count": 610282,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.875011447,
            "variance": 3.515667928
          },
          {
            "average": 1.379482292,
            "count": 610282,
            "maximum": 16.32600021,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.580126972,
            "variance": 43.29807097
          },
          {
            "average": 0.4827669831,
            "count": 610282,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997033443,
            "variance": 0.2497034323
          },
          {
            "average": 417.1405793,
            "count": 610282,
            "maximum": 419,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6110369667,
            "variance": 0.3733661746
          },
          {
            "average": 220421158,
            "count": 610282,
            "maximum": 220422023.7,
            "minimum": 220419840,
            "name": "GpsTime",
            "position": 12,
            "stddev": 438.1516193,
            "variance": 191976.8415
          },
          {
            "average": 0.4827669831,
            "count": 610282,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997033443,
            "variance": 0.2497034323
          },
          {
            "average": 0,
            "count": 610282,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 610282,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 610282,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.02956665935,
            "count": 610282,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1693886626,
            "variance": 0.02869251902
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86611.23647,
          2375331.862,
          0.8917347587,
          -86139.51647,
          2375632.402,
          1.431734759
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86611.23646594433,
                2375331.8617355847,
                0.891734758748703
              ],
              [
                -86611.23646594433,
                2375632.4017355847,
                0.891734758748703
              ],
              [
                -86139.51646594433,
                2375632.4017355847,
                1.431734758748703
              ],
              [
                -86139.51646594433,
                2375331.8617355847,
                1.431734758748703
              ],
              [
                -86611.23646594433,
                2375331.8617355847,
                0.891734758748703
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:07:03+00:00",
        "end_time": "2018-09-08T05:30:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2414.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2414.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2414.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2414.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.367612,
            71.36327983,
            0.8917347587,
            -156.3544367,
            71.36619464,
            1.431734759
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.3673192622463,
                  71.36327983267687,
                  0.891734758748703
                ],
                [
                  -156.36761199482035,
                  71.36604051459902,
                  0.891734758748703
                ],
                [
                  -156.3547278519435,
                  71.36619463995538,
                  1.431734758748703
                ],
                [
                  -156.35443670969246,
                  71.36343393607353,
                  1.431734758748703
                ],
                [
                  -156.3673192622463,
                  71.36327983267687,
                  0.891734758748703
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2414.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2414.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:07:03Z",
            "pc:count": 610282,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86413.41381,
                "count": 610282,
                "maximum": -86139.51647,
                "minimum": -86611.23647,
                "name": "X",
                "position": 0,
                "stddev": 124.9865686,
                "variance": 15621.64234
              },
              {
                "average": 2375440.084,
                "count": 610282,
                "maximum": 2375632.402,
                "minimum": 2375331.862,
                "name": "Y",
                "position": 1,
                "stddev": 66.78734615,
                "variance": 4460.549605
              },
              {
                "average": 1.154650313,
                "count": 610282,
                "maximum": 1.431734759,
                "minimum": 0.8917347587,
                "name": "Z",
                "position": 2,
                "stddev": 0.0524453366,
                "variance": 0.002750513331
              },
              {
                "average": 20981.2277,
                "count": 610282,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15001.21092,
                "variance": 225036329
              },
              {
                "average": 1,
                "count": 610282,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 610282,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4971177259,
                "count": 610282,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999921021,
                "variance": 0.2499921021
              },
              {
                "average": 0.0006816520887,
                "count": 610282,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02609958918,
                "variance": 0.0006811885553
              },
              {
                "average": 8.165998669,
                "count": 610282,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.875011447,
                "variance": 3.515667928
              },
              {
                "average": 1.379482292,
                "count": 610282,
                "maximum": 16.32600021,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.580126972,
                "variance": 43.29807097
              },
              {
                "average": 0.4827669831,
                "count": 610282,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997033443,
                "variance": 0.2497034323
              },
              {
                "average": 417.1405793,
                "count": 610282,
                "maximum": 419,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6110369667,
                "variance": 0.3733661746
              },
              {
                "average": 220421158,
                "count": 610282,
                "maximum": 220422023.7,
                "minimum": 220419840,
                "name": "GpsTime",
                "position": 12,
                "stddev": 438.1516193,
                "variance": 191976.8415
              },
              {
                "average": 0.4827669831,
                "count": 610282,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997033443,
                "variance": 0.2497034323
              },
              {
                "average": 0,
                "count": 610282,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 610282,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 610282,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.02956665935,
                "count": 610282,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1693886626,
                "variance": 0.02869251902
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86611.23647,
              2375331.862,
              0.8917347587,
              -86139.51647,
              2375632.402,
              1.431734759
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86611.23646594433,
                    2375331.8617355847,
                    0.891734758748703
                  ],
                  [
                    -86611.23646594433,
                    2375632.4017355847,
                    0.891734758748703
                  ],
                  [
                    -86139.51646594433,
                    2375632.4017355847,
                    1.431734758748703
                  ],
                  [
                    -86139.51646594433,
                    2375331.8617355847,
                    1.431734758748703
                  ],
                  [
                    -86611.23646594433,
                    2375331.8617355847,
                    0.891734758748703
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:07:03+00:00",
            "end_time": "2018-09-08T05:30:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2458.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.46785611870445,
              71.38875751072861,
              0.816891512651578
            ],
            [
              -156.4680321518305,
              71.39034848094676,
              0.816891512651578
            ],
            [
              -156.45720169950687,
              71.39048348616693,
              1.536891512651577
            ],
            [
              -156.45702643745253,
              71.38889250484715,
              1.536891512651577
            ],
            [
              -156.46785611870445,
              71.38875751072861,
              0.816891512651578
            ]
          ]
        ]
      },
      "bbox": [
        -156.4680322,
        71.38875751,
        0.8168915127,
        -156.4570264,
        71.39048349,
        1.536891513
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:54Z",
        "pc:count": 274936,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90043.91264,
            "count": 274936,
            "maximum": -89788.74902,
            "minimum": -90184.86902,
            "name": "X",
            "position": 0,
            "stddev": 92.76303698,
            "variance": 8604.98103
          },
          {
            "average": 2378300.45,
            "count": 274936,
            "maximum": 2378408.663,
            "minimum": 2378235.483,
            "name": "Y",
            "position": 1,
            "stddev": 37.68168261,
            "variance": 1419.909204
          },
          {
            "average": 1.162311283,
            "count": 274936,
            "maximum": 1.536891513,
            "minimum": 0.8168915127,
            "name": "Z",
            "position": 2,
            "stddev": 0.08205890218,
            "variance": 0.006733663427
          },
          {
            "average": 12888.70784,
            "count": 274936,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9579.423352,
            "variance": 91765351.76
          },
          {
            "average": 1,
            "count": 274936,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 274936,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5040445776,
            "count": 274936,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999845504,
            "variance": 0.2499845506
          },
          {
            "average": 0.0007274420229,
            "count": 274936,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02696137042,
            "variance": 0.0007269154949
          },
          {
            "average": 6.785855617,
            "count": 274936,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.160097317,
            "variance": 9.986215052
          },
          {
            "average": -0.5202483766,
            "count": 274936,
            "maximum": 16.33799934,
            "minimum": -15.76200008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.080758351,
            "variance": 82.46017223
          },
          {
            "average": 0.4935694125,
            "count": 274936,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999595551,
            "variance": 0.2499595567
          },
          {
            "average": 404.905127,
            "count": 274936,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7724768188,
            "variance": 0.5967204356
          },
          {
            "average": 220414453,
            "count": 274936,
            "maximum": 220415234.9,
            "minimum": 220413179,
            "name": "GpsTime",
            "position": 12,
            "stddev": 463.2711696,
            "variance": 214620.1766
          },
          {
            "average": 0.4935694125,
            "count": 274936,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999595551,
            "variance": 0.2499595567
          },
          {
            "average": 0,
            "count": 274936,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 274936,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 274936,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.129830215,
            "count": 274936,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.336117154,
            "variance": 0.1129747412
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90184.86902,
          2378235.483,
          0.8168915127,
          -89788.74902,
          2378408.663,
          1.536891513
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90184.86901796093,
                2378235.482626393,
                0.816891512651578
              ],
              [
                -90184.86901796093,
                2378408.6626263927,
                0.816891512651578
              ],
              [
                -89788.74901796093,
                2378408.6626263927,
                1.536891512651577
              ],
              [
                -89788.74901796093,
                2378235.482626393,
                1.536891512651577
              ],
              [
                -90184.86901796093,
                2378235.482626393,
                0.816891512651578
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:54+00:00",
        "end_time": "2018-09-08T03:39:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2458.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2458.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2458.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2458.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4680322,
            71.38875751,
            0.8168915127,
            -156.4570264,
            71.39048349,
            1.536891513
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.46785611870445,
                  71.38875751072861,
                  0.816891512651578
                ],
                [
                  -156.4680321518305,
                  71.39034848094676,
                  0.816891512651578
                ],
                [
                  -156.45720169950687,
                  71.39048348616693,
                  1.536891512651577
                ],
                [
                  -156.45702643745253,
                  71.38889250484715,
                  1.536891512651577
                ],
                [
                  -156.46785611870445,
                  71.38875751072861,
                  0.816891512651578
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2458.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2458.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:54Z",
            "pc:count": 274936,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90043.91264,
                "count": 274936,
                "maximum": -89788.74902,
                "minimum": -90184.86902,
                "name": "X",
                "position": 0,
                "stddev": 92.76303698,
                "variance": 8604.98103
              },
              {
                "average": 2378300.45,
                "count": 274936,
                "maximum": 2378408.663,
                "minimum": 2378235.483,
                "name": "Y",
                "position": 1,
                "stddev": 37.68168261,
                "variance": 1419.909204
              },
              {
                "average": 1.162311283,
                "count": 274936,
                "maximum": 1.536891513,
                "minimum": 0.8168915127,
                "name": "Z",
                "position": 2,
                "stddev": 0.08205890218,
                "variance": 0.006733663427
              },
              {
                "average": 12888.70784,
                "count": 274936,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9579.423352,
                "variance": 91765351.76
              },
              {
                "average": 1,
                "count": 274936,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 274936,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5040445776,
                "count": 274936,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999845504,
                "variance": 0.2499845506
              },
              {
                "average": 0.0007274420229,
                "count": 274936,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02696137042,
                "variance": 0.0007269154949
              },
              {
                "average": 6.785855617,
                "count": 274936,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.160097317,
                "variance": 9.986215052
              },
              {
                "average": -0.5202483766,
                "count": 274936,
                "maximum": 16.33799934,
                "minimum": -15.76200008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.080758351,
                "variance": 82.46017223
              },
              {
                "average": 0.4935694125,
                "count": 274936,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999595551,
                "variance": 0.2499595567
              },
              {
                "average": 404.905127,
                "count": 274936,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7724768188,
                "variance": 0.5967204356
              },
              {
                "average": 220414453,
                "count": 274936,
                "maximum": 220415234.9,
                "minimum": 220413179,
                "name": "GpsTime",
                "position": 12,
                "stddev": 463.2711696,
                "variance": 214620.1766
              },
              {
                "average": 0.4935694125,
                "count": 274936,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999595551,
                "variance": 0.2499595567
              },
              {
                "average": 0,
                "count": 274936,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 274936,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 274936,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.129830215,
                "count": 274936,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.336117154,
                "variance": 0.1129747412
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90184.86902,
              2378235.483,
              0.8168915127,
              -89788.74902,
              2378408.663,
              1.536891513
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90184.86901796093,
                    2378235.482626393,
                    0.816891512651578
                  ],
                  [
                    -90184.86901796093,
                    2378408.6626263927,
                    0.816891512651578
                  ],
                  [
                    -89788.74901796093,
                    2378408.6626263927,
                    1.536891512651577
                  ],
                  [
                    -89788.74901796093,
                    2378235.482626393,
                    1.536891512651577
                  ],
                  [
                    -90184.86901796093,
                    2378235.482626393,
                    0.816891512651578
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:54+00:00",
            "end_time": "2018-09-08T03:39:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2415.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.35453163784453,
              71.36335626731743,
              0.976488632174015
            ],
            [
              -156.3545983600984,
              71.36398898109768,
              0.976488632174015
            ],
            [
              -156.35091579037694,
              71.36403287991101,
              1.376488632174015
            ],
            [
              -156.3508491723015,
              71.36340016469732,
              1.376488632174015
            ],
            [
              -156.35453163784453,
              71.36335626731743,
              0.976488632174015
            ]
          ]
        ]
      },
      "bbox": [
        -156.3545984,
        71.36335627,
        0.9764886322,
        -156.3508492,
        71.36403288,
        1.376488632
      ],
      "properties": {
        "datetime": "2018-09-08T06:07:02Z",
        "pc:count": 36015,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86096.45981,
            "count": 36015,
            "maximum": -86008.44758,
            "minimum": -86143.28758,
            "name": "X",
            "position": 0,
            "stddev": 31.11670812,
            "variance": 968.249524
          },
          {
            "average": 2375349.094,
            "count": 36015,
            "maximum": 2375392.42,
            "minimum": 2375323.54,
            "name": "Y",
            "position": 1,
            "stddev": 15.32138582,
            "variance": 234.7448633
          },
          {
            "average": 1.159817801,
            "count": 36015,
            "maximum": 1.376488632,
            "minimum": 0.9764886322,
            "name": "Z",
            "position": 2,
            "stddev": 0.05072058989,
            "variance": 0.002572578239
          },
          {
            "average": 17484.56104,
            "count": 36015,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11721.6045,
            "variance": 137396012
          },
          {
            "average": 1,
            "count": 36015,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 36015,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4886575038,
            "count": 36015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998782711,
            "variance": 0.249878286
          },
          {
            "average": 0.0008885186728,
            "count": 36015,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02979519855,
            "variance": 0.0008877538569
          },
          {
            "average": 7.964153825,
            "count": 36015,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.19816259,
            "variance": 4.83191877
          },
          {
            "average": 3.456012828,
            "count": 36015,
            "maximum": 12.76200008,
            "minimum": -15.67199993,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.605203304,
            "variance": 43.62871068
          },
          {
            "average": 0.4903512425,
            "count": 36015,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999138332,
            "variance": 0.2499138406
          },
          {
            "average": 417.734444,
            "count": 36015,
            "maximum": 419,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6200546502,
            "variance": 0.3844677692
          },
          {
            "average": 220421553,
            "count": 36015,
            "maximum": 220422022.5,
            "minimum": 220420919.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 476.2005177,
            "variance": 226766.9331
          },
          {
            "average": 0.4903512425,
            "count": 36015,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999138332,
            "variance": 0.2499138406
          },
          {
            "average": 0,
            "count": 36015,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 36015,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 36015,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04084409274,
            "count": 36015,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1979316564,
            "variance": 0.03917694062
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86143.28758,
          2375323.54,
          0.9764886322,
          -86008.44758,
          2375392.42,
          1.376488632
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86143.28758093742,
                2375323.5401122337,
                0.976488632174015
              ],
              [
                -86143.28758093742,
                2375392.4201122336,
                0.976488632174015
              ],
              [
                -86008.44758093743,
                2375392.4201122336,
                1.376488632174015
              ],
              [
                -86008.44758093743,
                2375323.5401122337,
                1.376488632174015
              ],
              [
                -86143.28758093742,
                2375323.5401122337,
                0.976488632174015
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:07:02+00:00",
        "end_time": "2018-09-08T05:48:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2415.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2415.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2415.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2415.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3545984,
            71.36335627,
            0.9764886322,
            -156.3508492,
            71.36403288,
            1.376488632
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.35453163784453,
                  71.36335626731743,
                  0.976488632174015
                ],
                [
                  -156.3545983600984,
                  71.36398898109768,
                  0.976488632174015
                ],
                [
                  -156.35091579037694,
                  71.36403287991101,
                  1.376488632174015
                ],
                [
                  -156.3508491723015,
                  71.36340016469732,
                  1.376488632174015
                ],
                [
                  -156.35453163784453,
                  71.36335626731743,
                  0.976488632174015
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2415.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2415.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:07:02Z",
            "pc:count": 36015,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86096.45981,
                "count": 36015,
                "maximum": -86008.44758,
                "minimum": -86143.28758,
                "name": "X",
                "position": 0,
                "stddev": 31.11670812,
                "variance": 968.249524
              },
              {
                "average": 2375349.094,
                "count": 36015,
                "maximum": 2375392.42,
                "minimum": 2375323.54,
                "name": "Y",
                "position": 1,
                "stddev": 15.32138582,
                "variance": 234.7448633
              },
              {
                "average": 1.159817801,
                "count": 36015,
                "maximum": 1.376488632,
                "minimum": 0.9764886322,
                "name": "Z",
                "position": 2,
                "stddev": 0.05072058989,
                "variance": 0.002572578239
              },
              {
                "average": 17484.56104,
                "count": 36015,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11721.6045,
                "variance": 137396012
              },
              {
                "average": 1,
                "count": 36015,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 36015,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4886575038,
                "count": 36015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998782711,
                "variance": 0.249878286
              },
              {
                "average": 0.0008885186728,
                "count": 36015,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02979519855,
                "variance": 0.0008877538569
              },
              {
                "average": 7.964153825,
                "count": 36015,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.19816259,
                "variance": 4.83191877
              },
              {
                "average": 3.456012828,
                "count": 36015,
                "maximum": 12.76200008,
                "minimum": -15.67199993,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.605203304,
                "variance": 43.62871068
              },
              {
                "average": 0.4903512425,
                "count": 36015,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999138332,
                "variance": 0.2499138406
              },
              {
                "average": 417.734444,
                "count": 36015,
                "maximum": 419,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6200546502,
                "variance": 0.3844677692
              },
              {
                "average": 220421553,
                "count": 36015,
                "maximum": 220422022.5,
                "minimum": 220420919.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 476.2005177,
                "variance": 226766.9331
              },
              {
                "average": 0.4903512425,
                "count": 36015,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999138332,
                "variance": 0.2499138406
              },
              {
                "average": 0,
                "count": 36015,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 36015,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 36015,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04084409274,
                "count": 36015,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1979316564,
                "variance": 0.03917694062
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86143.28758,
              2375323.54,
              0.9764886322,
              -86008.44758,
              2375392.42,
              1.376488632
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86143.28758093742,
                    2375323.5401122337,
                    0.976488632174015
                  ],
                  [
                    -86143.28758093742,
                    2375392.4201122336,
                    0.976488632174015
                  ],
                  [
                    -86008.44758093743,
                    2375392.4201122336,
                    1.376488632174015
                  ],
                  [
                    -86008.44758093743,
                    2375323.5401122337,
                    1.376488632174015
                  ],
                  [
                    -86143.28758093742,
                    2375323.5401122337,
                    0.976488632174015
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:07:02+00:00",
            "end_time": "2018-09-08T05:48:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2266.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.74085881108553,
              71.31697747376485,
              0.853203959164907
            ],
            [
              -156.7413310544103,
              71.32083014136698,
              0.853203959164907
            ],
            [
              -156.7290578214597,
              71.3210005319075,
              1.453203959164908
            ],
            [
              -156.7285876876468,
              71.31714783051595,
              1.453203959164908
            ],
            [
              -156.74085881108553,
              71.31697747376485,
              0.853203959164907
            ]
          ]
        ]
      },
      "bbox": [
        -156.7413311,
        71.31697747,
        0.8532039592,
        -156.7285877,
        71.32100053,
        1.453203959
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:42Z",
        "pc:count": 732320,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -100181.9089,
            "count": 732320,
            "maximum": -100027.9194,
            "minimum": -100478.2794,
            "name": "X",
            "position": 0,
            "stddev": 101.4802541,
            "variance": 10298.24197
          },
          {
            "average": 2370975.691,
            "count": 732320,
            "maximum": 2371243.047,
            "minimum": 2370823.407,
            "name": "Y",
            "position": 1,
            "stddev": 96.9845947,
            "variance": 9406.011609
          },
          {
            "average": 1.14428813,
            "count": 732320,
            "maximum": 1.453203959,
            "minimum": 0.8532039592,
            "name": "Z",
            "position": 2,
            "stddev": 0.06313926944,
            "variance": 0.003986567345
          },
          {
            "average": 13185.95473,
            "count": 732320,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9993.817307,
            "variance": 99876384.36
          },
          {
            "average": 1,
            "count": 732320,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 732320,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4966353507,
            "count": 732320,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999890204,
            "variance": 0.2499890205
          },
          {
            "average": 0.0004656434346,
            "count": 732320,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02157376291,
            "variance": 0.0004654272463
          },
          {
            "average": 7.502752895,
            "count": 732320,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.629123727,
            "variance": 6.91229157
          },
          {
            "average": 1.270401002,
            "count": 732320,
            "maximum": 15.5340004,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.167740769,
            "variance": 66.71198928
          },
          {
            "average": 0.4896151955,
            "count": 732320,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998924855,
            "variance": 0.2498924971
          },
          {
            "average": 403.1038139,
            "count": 732320,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.700076307,
            "variance": 0.4901068356
          },
          {
            "average": 220413425.1,
            "count": 732320,
            "maximum": 220414502.4,
            "minimum": 220412790.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 379.110253,
            "variance": 143724.584
          },
          {
            "average": 0.4896151955,
            "count": 732320,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998924855,
            "variance": 0.2498924971
          },
          {
            "average": 0,
            "count": 732320,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 732320,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 732320,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03804894035,
            "count": 732320,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1913145799,
            "variance": 0.03660126847
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100478.2794,
          2370823.407,
          0.8532039592,
          -100027.9194,
          2371243.047,
          1.453203959
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100478.27935633992,
                2370823.406660875,
                0.853203959164907
              ],
              [
                -100478.27935633992,
                2371243.0466608745,
                0.853203959164907
              ],
              [
                -100027.91935633993,
                2371243.0466608745,
                1.453203959164908
              ],
              [
                -100027.91935633993,
                2370823.406660875,
                1.453203959164908
              ],
              [
                -100478.27935633992,
                2370823.406660875,
                0.853203959164907
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:42+00:00",
        "end_time": "2018-09-08T03:33:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2266.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2266.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2266.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2266.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7413311,
            71.31697747,
            0.8532039592,
            -156.7285877,
            71.32100053,
            1.453203959
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.74085881108553,
                  71.31697747376485,
                  0.853203959164907
                ],
                [
                  -156.7413310544103,
                  71.32083014136698,
                  0.853203959164907
                ],
                [
                  -156.7290578214597,
                  71.3210005319075,
                  1.453203959164908
                ],
                [
                  -156.7285876876468,
                  71.31714783051595,
                  1.453203959164908
                ],
                [
                  -156.74085881108553,
                  71.31697747376485,
                  0.853203959164907
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2266.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2266.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:42Z",
            "pc:count": 732320,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -100181.9089,
                "count": 732320,
                "maximum": -100027.9194,
                "minimum": -100478.2794,
                "name": "X",
                "position": 0,
                "stddev": 101.4802541,
                "variance": 10298.24197
              },
              {
                "average": 2370975.691,
                "count": 732320,
                "maximum": 2371243.047,
                "minimum": 2370823.407,
                "name": "Y",
                "position": 1,
                "stddev": 96.9845947,
                "variance": 9406.011609
              },
              {
                "average": 1.14428813,
                "count": 732320,
                "maximum": 1.453203959,
                "minimum": 0.8532039592,
                "name": "Z",
                "position": 2,
                "stddev": 0.06313926944,
                "variance": 0.003986567345
              },
              {
                "average": 13185.95473,
                "count": 732320,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9993.817307,
                "variance": 99876384.36
              },
              {
                "average": 1,
                "count": 732320,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 732320,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4966353507,
                "count": 732320,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999890204,
                "variance": 0.2499890205
              },
              {
                "average": 0.0004656434346,
                "count": 732320,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02157376291,
                "variance": 0.0004654272463
              },
              {
                "average": 7.502752895,
                "count": 732320,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.629123727,
                "variance": 6.91229157
              },
              {
                "average": 1.270401002,
                "count": 732320,
                "maximum": 15.5340004,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.167740769,
                "variance": 66.71198928
              },
              {
                "average": 0.4896151955,
                "count": 732320,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998924855,
                "variance": 0.2498924971
              },
              {
                "average": 403.1038139,
                "count": 732320,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.700076307,
                "variance": 0.4901068356
              },
              {
                "average": 220413425.1,
                "count": 732320,
                "maximum": 220414502.4,
                "minimum": 220412790.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 379.110253,
                "variance": 143724.584
              },
              {
                "average": 0.4896151955,
                "count": 732320,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998924855,
                "variance": 0.2498924971
              },
              {
                "average": 0,
                "count": 732320,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 732320,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 732320,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03804894035,
                "count": 732320,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1913145799,
                "variance": 0.03660126847
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100478.2794,
              2370823.407,
              0.8532039592,
              -100027.9194,
              2371243.047,
              1.453203959
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100478.27935633992,
                    2370823.406660875,
                    0.853203959164907
                  ],
                  [
                    -100478.27935633992,
                    2371243.0466608745,
                    0.853203959164907
                  ],
                  [
                    -100027.91935633993,
                    2371243.0466608745,
                    1.453203959164908
                  ],
                  [
                    -100027.91935633993,
                    2370823.406660875,
                    1.453203959164908
                  ],
                  [
                    -100478.27935633992,
                    2370823.406660875,
                    0.853203959164907
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:42+00:00",
            "end_time": "2018-09-08T03:33:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2410.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.41835203094453,
              71.36371929075126,
              0.859190425867898
            ],
            [
              -156.41882299200364,
              71.36806663322812,
              0.859190425867898
            ],
            [
              -156.4054742271963,
              71.3682297546525,
              1.439190425867898
            ],
            [
              -156.40500586067176,
              71.36388237557546,
              1.439190425867898
            ],
            [
              -156.41835203094453,
              71.36371929075126,
              0.859190425867898
            ]
          ]
        ]
      },
      "bbox": [
        -156.418823,
        71.36371929,
        0.8591904259,
        -156.4050059,
        71.36822975,
        1.439190426
      ],
      "properties": {
        "datetime": "2018-09-08T05:31:04Z",
        "pc:count": 1531627,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88223.29228,
            "count": 1531627,
            "maximum": -87987.07469,
            "minimum": -88475.77469,
            "name": "X",
            "position": 0,
            "stddev": 131.5014749,
            "variance": 17292.6379
          },
          {
            "average": 2375693.437,
            "count": 1531627,
            "maximum": 2375920.194,
            "minimum": 2375446.914,
            "name": "Y",
            "position": 1,
            "stddev": 124.4991676,
            "variance": 15500.04273
          },
          {
            "average": 1.130210041,
            "count": 1531627,
            "maximum": 1.439190426,
            "minimum": 0.8591904259,
            "name": "Z",
            "position": 2,
            "stddev": 0.05849431066,
            "variance": 0.00342158438
          },
          {
            "average": 17481.36362,
            "count": 1531627,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13085.52615,
            "variance": 171230994.7
          },
          {
            "average": 1,
            "count": 1531627,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1531627,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4927603131,
            "count": 1531627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999477474,
            "variance": 0.2499477501
          },
          {
            "average": 0.000571287918,
            "count": 1531627,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0238948095,
            "variance": 0.0005709619209
          },
          {
            "average": 7.908961516,
            "count": 1531627,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.192447668,
            "variance": 4.806826776
          },
          {
            "average": 2.771933749,
            "count": 1531627,
            "maximum": 16.40399933,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.492349721,
            "variance": 42.1506049
          },
          {
            "average": 0.4810466256,
            "count": 1531627,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996408036,
            "variance": 0.2496409326
          },
          {
            "average": 413.4007053,
            "count": 1531627,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6644619738,
            "variance": 0.4415097146
          },
          {
            "average": 220419170.2,
            "count": 1531627,
            "maximum": 220419864.1,
            "minimum": 220418591.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 460.9259608,
            "variance": 212452.7413
          },
          {
            "average": 0.4810466256,
            "count": 1531627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996408036,
            "variance": 0.2496409326
          },
          {
            "average": 0,
            "count": 1531627,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1531627,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1531627,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03533366805,
            "count": 1531627,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1846218357,
            "variance": 0.03408522221
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88475.77469,
          2375446.914,
          0.8591904259,
          -87987.07469,
          2375920.194,
          1.439190426
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88475.77468594133,
                2375446.9137819014,
                0.859190425867898
              ],
              [
                -88475.77468594133,
                2375920.1937819016,
                0.859190425867898
              ],
              [
                -87987.07468594132,
                2375920.1937819016,
                1.439190425867898
              ],
              [
                -87987.07468594132,
                2375446.9137819014,
                1.439190425867898
              ],
              [
                -88475.77468594133,
                2375446.9137819014,
                0.859190425867898
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:31:04+00:00",
        "end_time": "2018-09-08T05:09:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2410.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2410.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2410.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2410.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.418823,
            71.36371929,
            0.8591904259,
            -156.4050059,
            71.36822975,
            1.439190426
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.41835203094453,
                  71.36371929075126,
                  0.859190425867898
                ],
                [
                  -156.41882299200364,
                  71.36806663322812,
                  0.859190425867898
                ],
                [
                  -156.4054742271963,
                  71.3682297546525,
                  1.439190425867898
                ],
                [
                  -156.40500586067176,
                  71.36388237557546,
                  1.439190425867898
                ],
                [
                  -156.41835203094453,
                  71.36371929075126,
                  0.859190425867898
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2410.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2410.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:31:04Z",
            "pc:count": 1531627,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88223.29228,
                "count": 1531627,
                "maximum": -87987.07469,
                "minimum": -88475.77469,
                "name": "X",
                "position": 0,
                "stddev": 131.5014749,
                "variance": 17292.6379
              },
              {
                "average": 2375693.437,
                "count": 1531627,
                "maximum": 2375920.194,
                "minimum": 2375446.914,
                "name": "Y",
                "position": 1,
                "stddev": 124.4991676,
                "variance": 15500.04273
              },
              {
                "average": 1.130210041,
                "count": 1531627,
                "maximum": 1.439190426,
                "minimum": 0.8591904259,
                "name": "Z",
                "position": 2,
                "stddev": 0.05849431066,
                "variance": 0.00342158438
              },
              {
                "average": 17481.36362,
                "count": 1531627,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13085.52615,
                "variance": 171230994.7
              },
              {
                "average": 1,
                "count": 1531627,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1531627,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4927603131,
                "count": 1531627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999477474,
                "variance": 0.2499477501
              },
              {
                "average": 0.000571287918,
                "count": 1531627,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0238948095,
                "variance": 0.0005709619209
              },
              {
                "average": 7.908961516,
                "count": 1531627,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.192447668,
                "variance": 4.806826776
              },
              {
                "average": 2.771933749,
                "count": 1531627,
                "maximum": 16.40399933,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.492349721,
                "variance": 42.1506049
              },
              {
                "average": 0.4810466256,
                "count": 1531627,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996408036,
                "variance": 0.2496409326
              },
              {
                "average": 413.4007053,
                "count": 1531627,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6644619738,
                "variance": 0.4415097146
              },
              {
                "average": 220419170.2,
                "count": 1531627,
                "maximum": 220419864.1,
                "minimum": 220418591.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 460.9259608,
                "variance": 212452.7413
              },
              {
                "average": 0.4810466256,
                "count": 1531627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996408036,
                "variance": 0.2496409326
              },
              {
                "average": 0,
                "count": 1531627,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1531627,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1531627,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03533366805,
                "count": 1531627,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1846218357,
                "variance": 0.03408522221
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88475.77469,
              2375446.914,
              0.8591904259,
              -87987.07469,
              2375920.194,
              1.439190426
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88475.77468594133,
                    2375446.9137819014,
                    0.859190425867898
                  ],
                  [
                    -88475.77468594133,
                    2375920.1937819016,
                    0.859190425867898
                  ],
                  [
                    -87987.07468594132,
                    2375920.1937819016,
                    1.439190425867898
                  ],
                  [
                    -87987.07468594132,
                    2375446.9137819014,
                    1.439190425867898
                  ],
                  [
                    -88475.77468594133,
                    2375446.9137819014,
                    0.859190425867898
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:31:04+00:00",
            "end_time": "2018-09-08T05:09:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2447.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.46850437936968,
              71.38052283359232,
              0.805107543496886
            ],
            [
              -156.46898564783257,
              71.38487220962031,
              0.805107543496886
            ],
            [
              -156.45541836234466,
              71.3850413368856,
              14.665107543496886
            ],
            [
              -156.4549397336588,
              71.3806919228551,
              14.665107543496886
            ],
            [
              -156.46850437936968,
              71.38052283359232,
              0.805107543496886
            ]
          ]
        ]
      },
      "bbox": [
        -156.4689856,
        71.38052283,
        0.8051075435,
        -156.4549397,
        71.38504134,
        14.66510754
      ],
      "properties": {
        "datetime": "2018-09-08T04:32:30Z",
        "pc:count": 2803991,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90014.01847,
            "count": 2803991,
            "maximum": -89745.49624,
            "minimum": -90241.83624,
            "name": "X",
            "position": 0,
            "stddev": 133.6527613,
            "variance": 17863.06062
          },
          {
            "average": 2377596.067,
            "count": 2803991,
            "maximum": 2377814.671,
            "minimum": 2377341.211,
            "name": "Y",
            "position": 1,
            "stddev": 125.2157648,
            "variance": 15678.98776
          },
          {
            "average": 2.933912126,
            "count": 2803991,
            "maximum": 14.66510754,
            "minimum": 0.8051075435,
            "name": "Z",
            "position": 2,
            "stddev": 1.215815896,
            "variance": 1.478208294
          },
          {
            "average": 25903.10603,
            "count": 2803991,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12900.31418,
            "variance": 166418106
          },
          {
            "average": 1,
            "count": 2803991,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2803991,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5019377737,
            "count": 2803991,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999963342,
            "variance": 0.2499963342
          },
          {
            "average": 0.0004650514213,
            "count": 2803991,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02156003976,
            "variance": 0.0004648353143
          },
          {
            "average": 2.135769337,
            "count": 2803991,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.404709254,
            "variance": 5.782626599
          },
          {
            "average": 1.459877209,
            "count": 2803991,
            "maximum": 16.3920002,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.41197612,
            "variance": 108.4092467
          },
          {
            "average": 0.5476329988,
            "count": 2803991,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4977260148,
            "variance": 0.2477311858
          },
          {
            "average": 406.1916875,
            "count": 2803991,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9452586135,
            "variance": 0.8935138465
          },
          {
            "average": 220415106.1,
            "count": 2803991,
            "maximum": 220416350.4,
            "minimum": 220414289.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 590.1276989,
            "variance": 348250.701
          },
          {
            "average": 0.5476329988,
            "count": 2803991,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4977260148,
            "variance": 0.2477311858
          },
          {
            "average": 0,
            "count": 2803991,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2803991,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2803991,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2603350011,
            "count": 2803991,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4388174529,
            "variance": 0.192560757
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90241.83624,
          2377341.211,
          0.8051075435,
          -89745.49624,
          2377814.671,
          14.66510754
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90241.83623773411,
                2377341.2108463193,
                0.805107543496886
              ],
              [
                -90241.83623773411,
                2377814.6708463193,
                0.805107543496886
              ],
              [
                -89745.49623773411,
                2377814.6708463193,
                14.665107543496886
              ],
              [
                -89745.49623773411,
                2377341.2108463193,
                14.665107543496886
              ],
              [
                -90241.83623773411,
                2377341.2108463193,
                0.805107543496886
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:32:30+00:00",
        "end_time": "2018-09-08T03:58:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2447.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2447.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2447.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2447.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4689856,
            71.38052283,
            0.8051075435,
            -156.4549397,
            71.38504134,
            14.66510754
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.46850437936968,
                  71.38052283359232,
                  0.805107543496886
                ],
                [
                  -156.46898564783257,
                  71.38487220962031,
                  0.805107543496886
                ],
                [
                  -156.45541836234466,
                  71.3850413368856,
                  14.665107543496886
                ],
                [
                  -156.4549397336588,
                  71.3806919228551,
                  14.665107543496886
                ],
                [
                  -156.46850437936968,
                  71.38052283359232,
                  0.805107543496886
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2447.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2447.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:32:30Z",
            "pc:count": 2803991,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90014.01847,
                "count": 2803991,
                "maximum": -89745.49624,
                "minimum": -90241.83624,
                "name": "X",
                "position": 0,
                "stddev": 133.6527613,
                "variance": 17863.06062
              },
              {
                "average": 2377596.067,
                "count": 2803991,
                "maximum": 2377814.671,
                "minimum": 2377341.211,
                "name": "Y",
                "position": 1,
                "stddev": 125.2157648,
                "variance": 15678.98776
              },
              {
                "average": 2.933912126,
                "count": 2803991,
                "maximum": 14.66510754,
                "minimum": 0.8051075435,
                "name": "Z",
                "position": 2,
                "stddev": 1.215815896,
                "variance": 1.478208294
              },
              {
                "average": 25903.10603,
                "count": 2803991,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12900.31418,
                "variance": 166418106
              },
              {
                "average": 1,
                "count": 2803991,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2803991,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5019377737,
                "count": 2803991,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999963342,
                "variance": 0.2499963342
              },
              {
                "average": 0.0004650514213,
                "count": 2803991,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02156003976,
                "variance": 0.0004648353143
              },
              {
                "average": 2.135769337,
                "count": 2803991,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.404709254,
                "variance": 5.782626599
              },
              {
                "average": 1.459877209,
                "count": 2803991,
                "maximum": 16.3920002,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.41197612,
                "variance": 108.4092467
              },
              {
                "average": 0.5476329988,
                "count": 2803991,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4977260148,
                "variance": 0.2477311858
              },
              {
                "average": 406.1916875,
                "count": 2803991,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9452586135,
                "variance": 0.8935138465
              },
              {
                "average": 220415106.1,
                "count": 2803991,
                "maximum": 220416350.4,
                "minimum": 220414289.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 590.1276989,
                "variance": 348250.701
              },
              {
                "average": 0.5476329988,
                "count": 2803991,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4977260148,
                "variance": 0.2477311858
              },
              {
                "average": 0,
                "count": 2803991,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2803991,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2803991,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2603350011,
                "count": 2803991,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4388174529,
                "variance": 0.192560757
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90241.83624,
              2377341.211,
              0.8051075435,
              -89745.49624,
              2377814.671,
              14.66510754
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90241.83623773411,
                    2377341.2108463193,
                    0.805107543496886
                  ],
                  [
                    -90241.83623773411,
                    2377814.6708463193,
                    0.805107543496886
                  ],
                  [
                    -89745.49623773411,
                    2377814.6708463193,
                    14.665107543496886
                  ],
                  [
                    -89745.49623773411,
                    2377341.2108463193,
                    14.665107543496886
                  ],
                  [
                    -90241.83623773411,
                    2377341.2108463193,
                    0.805107543496886
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:32:30+00:00",
            "end_time": "2018-09-08T03:58:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2428.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.494783459413,
              71.37253694105182,
              -12.746632050243537
            ],
            [
              -156.49526949007603,
              71.37688436094763,
              -12.746632050243537
            ],
            [
              -156.4817094442075,
              71.37705525612246,
              17.893367949756463
            ],
            [
              -156.48122604984977,
              71.3727077978619,
              17.893367949756463
            ],
            [
              -156.494783459413,
              71.37253694105182,
              -12.746632050243537
            ]
          ]
        ]
      },
      "bbox": [
        -156.4952695,
        71.37253694,
        -12.74663205,
        -156.481226,
        71.37705526,
        17.89336795
      ],
      "properties": {
        "datetime": "2018-09-08T04:32:09Z",
        "pc:count": 2428763,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90965.57664,
            "count": 2428763,
            "maximum": -90738.44653,
            "minimum": -91234.70653,
            "name": "X",
            "position": 0,
            "stddev": 132.2326402,
            "variance": 17485.47114
          },
          {
            "average": 2376740.128,
            "count": 2428763,
            "maximum": 2376982.246,
            "minimum": 2376508.966,
            "name": "Y",
            "position": 1,
            "stddev": 128.1569914,
            "variance": 16424.21445
          },
          {
            "average": 2.538878784,
            "count": 2428763,
            "maximum": 17.89336795,
            "minimum": -12.74663205,
            "name": "Z",
            "position": 2,
            "stddev": 1.380761842,
            "variance": 1.906503265
          },
          {
            "average": 16697.53289,
            "count": 2428763,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8297.246411,
            "variance": 68844298
          },
          {
            "average": 1.000007411,
            "count": 2428763,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002722338741,
            "variance": 7.41112822e-06
          },
          {
            "average": 1.000014822,
            "count": 2428763,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003849954102,
            "variance": 1.482214659e-05
          },
          {
            "average": 0.5046449571,
            "count": 2428763,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999785268,
            "variance": 0.2499785273
          },
          {
            "average": 0.000488726154,
            "count": 2428763,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02210175337,
            "variance": 0.0004884875019
          },
          {
            "average": 3.939113862,
            "count": 2428763,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.567240411,
            "variance": 12.72520415
          },
          {
            "average": 0.09716383263,
            "count": 2428763,
            "maximum": 16.40999985,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.543738396,
            "variance": 91.08294257
          },
          {
            "average": 0.5243080531,
            "count": 2428763,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994088718,
            "variance": 0.2494092212
          },
          {
            "average": 406.5734923,
            "count": 2428763,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8995962919,
            "variance": 0.8092734884
          },
          {
            "average": 220415393.2,
            "count": 2428763,
            "maximum": 220416329.1,
            "minimum": 220414312.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 538.5086104,
            "variance": 289991.5235
          },
          {
            "average": 0.5243080531,
            "count": 2428763,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994088718,
            "variance": 0.2494092212
          },
          {
            "average": 0,
            "count": 2428763,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2428763,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2428763,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1844704485,
            "count": 2428763,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3878674569,
            "variance": 0.1504411641
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91234.70653,
          2376508.966,
          -12.74663205,
          -90738.44653,
          2376982.246,
          17.89336795
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91234.706526244,
                2376508.966306856,
                -12.746632050243537
              ],
              [
                -91234.706526244,
                2376982.246306856,
                -12.746632050243537
              ],
              [
                -90738.44652624399,
                2376982.246306856,
                17.893367949756463
              ],
              [
                -90738.44652624399,
                2376508.966306856,
                17.893367949756463
              ],
              [
                -91234.706526244,
                2376508.966306856,
                -12.746632050243537
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:32:09+00:00",
        "end_time": "2018-09-08T03:58:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2428.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2428.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2428.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2428.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4952695,
            71.37253694,
            -12.74663205,
            -156.481226,
            71.37705526,
            17.89336795
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.494783459413,
                  71.37253694105182,
                  -12.746632050243537
                ],
                [
                  -156.49526949007603,
                  71.37688436094763,
                  -12.746632050243537
                ],
                [
                  -156.4817094442075,
                  71.37705525612246,
                  17.893367949756463
                ],
                [
                  -156.48122604984977,
                  71.3727077978619,
                  17.893367949756463
                ],
                [
                  -156.494783459413,
                  71.37253694105182,
                  -12.746632050243537
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2428.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2428.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:32:09Z",
            "pc:count": 2428763,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90965.57664,
                "count": 2428763,
                "maximum": -90738.44653,
                "minimum": -91234.70653,
                "name": "X",
                "position": 0,
                "stddev": 132.2326402,
                "variance": 17485.47114
              },
              {
                "average": 2376740.128,
                "count": 2428763,
                "maximum": 2376982.246,
                "minimum": 2376508.966,
                "name": "Y",
                "position": 1,
                "stddev": 128.1569914,
                "variance": 16424.21445
              },
              {
                "average": 2.538878784,
                "count": 2428763,
                "maximum": 17.89336795,
                "minimum": -12.74663205,
                "name": "Z",
                "position": 2,
                "stddev": 1.380761842,
                "variance": 1.906503265
              },
              {
                "average": 16697.53289,
                "count": 2428763,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8297.246411,
                "variance": 68844298
              },
              {
                "average": 1.000007411,
                "count": 2428763,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002722338741,
                "variance": 7.41112822e-06
              },
              {
                "average": 1.000014822,
                "count": 2428763,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003849954102,
                "variance": 1.482214659e-05
              },
              {
                "average": 0.5046449571,
                "count": 2428763,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999785268,
                "variance": 0.2499785273
              },
              {
                "average": 0.000488726154,
                "count": 2428763,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02210175337,
                "variance": 0.0004884875019
              },
              {
                "average": 3.939113862,
                "count": 2428763,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.567240411,
                "variance": 12.72520415
              },
              {
                "average": 0.09716383263,
                "count": 2428763,
                "maximum": 16.40999985,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.543738396,
                "variance": 91.08294257
              },
              {
                "average": 0.5243080531,
                "count": 2428763,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994088718,
                "variance": 0.2494092212
              },
              {
                "average": 406.5734923,
                "count": 2428763,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8995962919,
                "variance": 0.8092734884
              },
              {
                "average": 220415393.2,
                "count": 2428763,
                "maximum": 220416329.1,
                "minimum": 220414312.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 538.5086104,
                "variance": 289991.5235
              },
              {
                "average": 0.5243080531,
                "count": 2428763,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994088718,
                "variance": 0.2494092212
              },
              {
                "average": 0,
                "count": 2428763,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2428763,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2428763,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1844704485,
                "count": 2428763,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3878674569,
                "variance": 0.1504411641
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91234.70653,
              2376508.966,
              -12.74663205,
              -90738.44653,
              2376982.246,
              17.89336795
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91234.706526244,
                    2376508.966306856,
                    -12.746632050243537
                  ],
                  [
                    -91234.706526244,
                    2376982.246306856,
                    -12.746632050243537
                  ],
                  [
                    -90738.44652624399,
                    2376982.246306856,
                    17.893367949756463
                  ],
                  [
                    -90738.44652624399,
                    2376508.966306856,
                    17.893367949756463
                  ],
                  [
                    -91234.706526244,
                    2376508.966306856,
                    -12.746632050243537
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:32:09+00:00",
            "end_time": "2018-09-08T03:58:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2267.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72927661754437,
              71.3168747174219,
              0.809534567856369
            ],
            [
              -156.72980546033168,
              71.32120739691835,
              0.809534567856369
            ],
            [
              -156.71629028952708,
              71.32139419249616,
              8.22953456785637
            ],
            [
              -156.71576405916613,
              71.31706147134204,
              8.22953456785637
            ],
            [
              -156.72927661754437,
              71.3168747174219,
              0.809534567856369
            ]
          ]
        ]
      },
      "bbox": [
        -156.7298055,
        71.31687472,
        0.8095345679,
        -156.7157641,
        71.32139419,
        8.229534568
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:41Z",
        "pc:count": 1770628,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99804.26173,
            "count": 1770628,
            "maximum": -99558.46195,
            "minimum": -100054.382,
            "name": "X",
            "position": 0,
            "stddev": 135.0455293,
            "variance": 18237.29499
          },
          {
            "average": 2371036.668,
            "count": 1770628,
            "maximum": 2371266.666,
            "minimum": 2370794.746,
            "name": "Y",
            "position": 1,
            "stddev": 128.3571871,
            "variance": 16475.56749
          },
          {
            "average": 1.156202377,
            "count": 1770628,
            "maximum": 8.229534568,
            "minimum": 0.8095345679,
            "name": "Z",
            "position": 2,
            "stddev": 0.07529890981,
            "variance": 0.005669925818
          },
          {
            "average": 14986.13503,
            "count": 1770628,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10880.00162,
            "variance": 118374435.2
          },
          {
            "average": 1,
            "count": 1770628,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1770628,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4931137427,
            "count": 1770628,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999527184,
            "variance": 0.2499527206
          },
          {
            "average": 0.0005331441726,
            "count": 1770628,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02308376552,
            "variance": 0.0005328602308
          },
          {
            "average": 7.680003366,
            "count": 1770628,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.472754212,
            "variance": 6.114513394
          },
          {
            "average": 3.194131017,
            "count": 1770628,
            "maximum": 16.24799919,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.730924928,
            "variance": 45.30535038
          },
          {
            "average": 0.4863861861,
            "count": 1770628,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998147709,
            "variance": 0.2498148052
          },
          {
            "average": 403.5899088,
            "count": 1770628,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6713471484,
            "variance": 0.4507069937
          },
          {
            "average": 220413689.2,
            "count": 1770628,
            "maximum": 220414501.9,
            "minimum": 220412797.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 360.1724116,
            "variance": 129724.166
          },
          {
            "average": 0.4863861861,
            "count": 1770628,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998147709,
            "variance": 0.2498148052
          },
          {
            "average": 0,
            "count": 1770628,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1770628,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1770628,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.0390398209,
            "count": 1770628,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1936897893,
            "variance": 0.03751573447
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100054.382,
          2370794.746,
          0.8095345679,
          -99558.46195,
          2371266.666,
          8.229534568
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100054.38195277218,
                2370794.746498636,
                0.809534567856369
              ],
              [
                -100054.38195277218,
                2371266.666498636,
                0.809534567856369
              ],
              [
                -99558.46195277217,
                2371266.666498636,
                8.22953456785637
              ],
              [
                -99558.46195277217,
                2370794.746498636,
                8.22953456785637
              ],
              [
                -100054.38195277218,
                2370794.746498636,
                0.809534567856369
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:41+00:00",
        "end_time": "2018-09-08T03:33:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2267.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2267.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2267.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2267.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7298055,
            71.31687472,
            0.8095345679,
            -156.7157641,
            71.32139419,
            8.229534568
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72927661754437,
                  71.3168747174219,
                  0.809534567856369
                ],
                [
                  -156.72980546033168,
                  71.32120739691835,
                  0.809534567856369
                ],
                [
                  -156.71629028952708,
                  71.32139419249616,
                  8.22953456785637
                ],
                [
                  -156.71576405916613,
                  71.31706147134204,
                  8.22953456785637
                ],
                [
                  -156.72927661754437,
                  71.3168747174219,
                  0.809534567856369
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2267.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2267.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:41Z",
            "pc:count": 1770628,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99804.26173,
                "count": 1770628,
                "maximum": -99558.46195,
                "minimum": -100054.382,
                "name": "X",
                "position": 0,
                "stddev": 135.0455293,
                "variance": 18237.29499
              },
              {
                "average": 2371036.668,
                "count": 1770628,
                "maximum": 2371266.666,
                "minimum": 2370794.746,
                "name": "Y",
                "position": 1,
                "stddev": 128.3571871,
                "variance": 16475.56749
              },
              {
                "average": 1.156202377,
                "count": 1770628,
                "maximum": 8.229534568,
                "minimum": 0.8095345679,
                "name": "Z",
                "position": 2,
                "stddev": 0.07529890981,
                "variance": 0.005669925818
              },
              {
                "average": 14986.13503,
                "count": 1770628,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10880.00162,
                "variance": 118374435.2
              },
              {
                "average": 1,
                "count": 1770628,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1770628,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4931137427,
                "count": 1770628,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999527184,
                "variance": 0.2499527206
              },
              {
                "average": 0.0005331441726,
                "count": 1770628,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02308376552,
                "variance": 0.0005328602308
              },
              {
                "average": 7.680003366,
                "count": 1770628,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.472754212,
                "variance": 6.114513394
              },
              {
                "average": 3.194131017,
                "count": 1770628,
                "maximum": 16.24799919,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.730924928,
                "variance": 45.30535038
              },
              {
                "average": 0.4863861861,
                "count": 1770628,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998147709,
                "variance": 0.2498148052
              },
              {
                "average": 403.5899088,
                "count": 1770628,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6713471484,
                "variance": 0.4507069937
              },
              {
                "average": 220413689.2,
                "count": 1770628,
                "maximum": 220414501.9,
                "minimum": 220412797.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 360.1724116,
                "variance": 129724.166
              },
              {
                "average": 0.4863861861,
                "count": 1770628,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998147709,
                "variance": 0.2498148052
              },
              {
                "average": 0,
                "count": 1770628,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1770628,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1770628,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.0390398209,
                "count": 1770628,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1936897893,
                "variance": 0.03751573447
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100054.382,
              2370794.746,
              0.8095345679,
              -99558.46195,
              2371266.666,
              8.229534568
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100054.38195277218,
                    2370794.746498636,
                    0.809534567856369
                  ],
                  [
                    -100054.38195277218,
                    2371266.666498636,
                    0.809534567856369
                  ],
                  [
                    -99558.46195277217,
                    2371266.666498636,
                    8.22953456785637
                  ],
                  [
                    -99558.46195277217,
                    2370794.746498636,
                    8.22953456785637
                  ],
                  [
                    -100054.38195277218,
                    2370794.746498636,
                    0.809534567856369
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:41+00:00",
            "end_time": "2018-09-08T03:33:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2235.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.72981353998148,
              71.30868093687371,
              1.80792985621706
            ],
            [
              -156.73034408612614,
              71.31302806318593,
              1.80792985621706
            ],
            [
              -156.71683222455465,
              71.3132149080439,
              22.787929856217062
            ],
            [
              -156.71630429808982,
              71.30886773994384,
              22.787929856217062
            ],
            [
              -156.72981353998148,
              71.30868093687371,
              1.80792985621706
            ]
          ]
        ]
      },
      "bbox": [
        -156.7303441,
        71.30868094,
        1.807929856,
        -156.7163043,
        71.31321491,
        22.78792986
      ],
      "properties": {
        "datetime": "2018-09-08T04:20:41Z",
        "pc:count": 2409477,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99869.09468,
            "count": 2409477,
            "maximum": -99614.71954,
            "minimum": -100110.6995,
            "name": "X",
            "position": 0,
            "stddev": 128.5423519,
            "variance": 16523.13623
          },
          {
            "average": 2370163.747,
            "count": 2409477,
            "maximum": 2370378.069,
            "minimum": 2369904.549,
            "name": "Y",
            "position": 1,
            "stddev": 129.2255912,
            "variance": 16699.25342
          },
          {
            "average": 4.526111794,
            "count": 2409477,
            "maximum": 22.78792986,
            "minimum": 1.807929856,
            "name": "Z",
            "position": 2,
            "stddev": 2.130555332,
            "variance": 4.539266021
          },
          {
            "average": 25623.26185,
            "count": 2409477,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11184.18765,
            "variance": 125086053.3
          },
          {
            "average": 1.000852052,
            "count": 2409477,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02939008891,
            "variance": 0.0008637773263
          },
          {
            "average": 1.00171614,
            "count": 2409477,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04185938682,
            "variance": 0.001752208265
          },
          {
            "average": 0.4941225834,
            "count": 2409477,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999655585,
            "variance": 0.2499655597
          },
          {
            "average": 0.0003768452656,
            "count": 2409477,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01940884874,
            "variance": 0.0003767034096
          },
          {
            "average": 4.33260745,
            "count": 2409477,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.716207499,
            "variance": 13.81019818
          },
          {
            "average": 2.392156171,
            "count": 2409477,
            "maximum": 16.23600006,
            "minimum": -15.94200039,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.551545527,
            "variance": 73.12893091
          },
          {
            "average": 0.4778962406,
            "count": 2409477,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995112885,
            "variance": 0.2495115274
          },
          {
            "average": 405.2979684,
            "count": 2409477,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7570636969,
            "variance": 0.5731454412
          },
          {
            "average": 220414643.6,
            "count": 2409477,
            "maximum": 220415641.7,
            "minimum": 220413877.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 422.9922367,
            "variance": 178922.4323
          },
          {
            "average": 0.4778962406,
            "count": 2409477,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995112885,
            "variance": 0.2495115274
          },
          {
            "average": 0,
            "count": 2409477,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2409477,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2409477,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1209677453,
            "count": 2409477,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3260898557,
            "variance": 0.106334594
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -100110.6995,
          2369904.549,
          1.807929856,
          -99614.71954,
          2370378.069,
          22.78792986
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -100110.69954032778,
                2369904.5494145593,
                1.80792985621706
              ],
              [
                -100110.69954032778,
                2370378.069414559,
                1.80792985621706
              ],
              [
                -99614.71954032777,
                2370378.069414559,
                22.787929856217062
              ],
              [
                -99614.71954032777,
                2369904.5494145593,
                22.787929856217062
              ],
              [
                -100110.69954032778,
                2369904.5494145593,
                1.80792985621706
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:20:41+00:00",
        "end_time": "2018-09-08T03:51:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2235.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2235.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2235.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2235.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7303441,
            71.30868094,
            1.807929856,
            -156.7163043,
            71.31321491,
            22.78792986
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.72981353998148,
                  71.30868093687371,
                  1.80792985621706
                ],
                [
                  -156.73034408612614,
                  71.31302806318593,
                  1.80792985621706
                ],
                [
                  -156.71683222455465,
                  71.3132149080439,
                  22.787929856217062
                ],
                [
                  -156.71630429808982,
                  71.30886773994384,
                  22.787929856217062
                ],
                [
                  -156.72981353998148,
                  71.30868093687371,
                  1.80792985621706
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2235.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2235.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:20:41Z",
            "pc:count": 2409477,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99869.09468,
                "count": 2409477,
                "maximum": -99614.71954,
                "minimum": -100110.6995,
                "name": "X",
                "position": 0,
                "stddev": 128.5423519,
                "variance": 16523.13623
              },
              {
                "average": 2370163.747,
                "count": 2409477,
                "maximum": 2370378.069,
                "minimum": 2369904.549,
                "name": "Y",
                "position": 1,
                "stddev": 129.2255912,
                "variance": 16699.25342
              },
              {
                "average": 4.526111794,
                "count": 2409477,
                "maximum": 22.78792986,
                "minimum": 1.807929856,
                "name": "Z",
                "position": 2,
                "stddev": 2.130555332,
                "variance": 4.539266021
              },
              {
                "average": 25623.26185,
                "count": 2409477,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11184.18765,
                "variance": 125086053.3
              },
              {
                "average": 1.000852052,
                "count": 2409477,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02939008891,
                "variance": 0.0008637773263
              },
              {
                "average": 1.00171614,
                "count": 2409477,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04185938682,
                "variance": 0.001752208265
              },
              {
                "average": 0.4941225834,
                "count": 2409477,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999655585,
                "variance": 0.2499655597
              },
              {
                "average": 0.0003768452656,
                "count": 2409477,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01940884874,
                "variance": 0.0003767034096
              },
              {
                "average": 4.33260745,
                "count": 2409477,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.716207499,
                "variance": 13.81019818
              },
              {
                "average": 2.392156171,
                "count": 2409477,
                "maximum": 16.23600006,
                "minimum": -15.94200039,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.551545527,
                "variance": 73.12893091
              },
              {
                "average": 0.4778962406,
                "count": 2409477,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995112885,
                "variance": 0.2495115274
              },
              {
                "average": 405.2979684,
                "count": 2409477,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7570636969,
                "variance": 0.5731454412
              },
              {
                "average": 220414643.6,
                "count": 2409477,
                "maximum": 220415641.7,
                "minimum": 220413877.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 422.9922367,
                "variance": 178922.4323
              },
              {
                "average": 0.4778962406,
                "count": 2409477,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995112885,
                "variance": 0.2495115274
              },
              {
                "average": 0,
                "count": 2409477,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2409477,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2409477,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1209677453,
                "count": 2409477,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3260898557,
                "variance": 0.106334594
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -100110.6995,
              2369904.549,
              1.807929856,
              -99614.71954,
              2370378.069,
              22.78792986
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -100110.69954032778,
                    2369904.5494145593,
                    1.80792985621706
                  ],
                  [
                    -100110.69954032778,
                    2370378.069414559,
                    1.80792985621706
                  ],
                  [
                    -99614.71954032777,
                    2370378.069414559,
                    22.787929856217062
                  ],
                  [
                    -99614.71954032777,
                    2369904.5494145593,
                    22.787929856217062
                  ],
                  [
                    -100110.69954032778,
                    2369904.5494145593,
                    1.80792985621706
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:20:41+00:00",
            "end_time": "2018-09-08T03:51:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2305.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.61366586068206,
              71.32425814292327,
              1.231102454422838
            ],
            [
              -156.6141741989635,
              71.32860603480229,
              1.231102454422838
            ],
            [
              -156.60064979761236,
              71.3287849616413,
              7.351102454422838
            ],
            [
              -156.60014408382156,
              71.32443702970222,
              7.351102454422838
            ],
            [
              -156.61366586068206,
              71.32425814292327,
              1.231102454422838
            ]
          ]
        ]
      },
      "bbox": [
        -156.6141742,
        71.32425814,
        1.231102454,
        -156.6001441,
        71.32878496,
        7.351102454
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:16Z",
        "pc:count": 3119025,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95542.98367,
            "count": 3119025,
            "maximum": -95290.69134,
            "minimum": -95786.75134,
            "name": "X",
            "position": 0,
            "stddev": 135.270069,
            "variance": 18297.99156
          },
          {
            "average": 2371660.96,
            "count": 3119025,
            "maximum": 2371900.676,
            "minimum": 2371427.156,
            "name": "Y",
            "position": 1,
            "stddev": 130.200777,
            "variance": 16952.24234
          },
          {
            "average": 4.775684232,
            "count": 3119025,
            "maximum": 7.351102454,
            "minimum": 1.231102454,
            "name": "Z",
            "position": 2,
            "stddev": 0.7012295392,
            "variance": 0.4917228667
          },
          {
            "average": 44026.28912,
            "count": 3119025,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10502.62237,
            "variance": 110305076.6
          },
          {
            "average": 1,
            "count": 3119025,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3119025,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4987183495,
            "count": 3119025,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999984375,
            "variance": 0.2499984375
          },
          {
            "average": 0.0004392398265,
            "count": 3119025,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02095344926,
            "variance": 0.0004390470357
          },
          {
            "average": 1.332723207,
            "count": 3119025,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4713449137,
            "variance": 0.2221660277
          },
          {
            "average": -0.4223279566,
            "count": 3119025,
            "maximum": 16.33799934,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.19471185,
            "variance": 103.9321498
          },
          {
            "average": 0.4552425838,
            "count": 3119025,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4979928245,
            "variance": 0.2479968532
          },
          {
            "average": 409.5320458,
            "count": 3119025,
            "maximum": 411,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9541289729,
            "variance": 0.910362097
          },
          {
            "average": 220417044.1,
            "count": 3119025,
            "maximum": 220417836.2,
            "minimum": 220416202,
            "name": "GpsTime",
            "position": 12,
            "stddev": 533.3893654,
            "variance": 284504.2151
          },
          {
            "average": 0.4552425838,
            "count": 3119025,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4979928245,
            "variance": 0.2479968532
          },
          {
            "average": 0,
            "count": 3119025,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3119025,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3119025,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2112862193,
            "count": 3119025,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4082210262,
            "variance": 0.1666444062
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95786.75134,
          2371427.156,
          1.231102454,
          -95290.69134,
          2371900.676,
          7.351102454
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95786.75133793666,
                2371427.156055511,
                1.231102454422838
              ],
              [
                -95786.75133793666,
                2371900.6760555105,
                1.231102454422838
              ],
              [
                -95290.69133793666,
                2371900.6760555105,
                7.351102454422838
              ],
              [
                -95290.69133793666,
                2371427.156055511,
                7.351102454422838
              ],
              [
                -95786.75133793666,
                2371427.156055511,
                1.231102454422838
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:16+00:00",
        "end_time": "2018-09-08T04:30:02+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2305.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2305.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2305.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2305.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6141742,
            71.32425814,
            1.231102454,
            -156.6001441,
            71.32878496,
            7.351102454
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.61366586068206,
                  71.32425814292327,
                  1.231102454422838
                ],
                [
                  -156.6141741989635,
                  71.32860603480229,
                  1.231102454422838
                ],
                [
                  -156.60064979761236,
                  71.3287849616413,
                  7.351102454422838
                ],
                [
                  -156.60014408382156,
                  71.32443702970222,
                  7.351102454422838
                ],
                [
                  -156.61366586068206,
                  71.32425814292327,
                  1.231102454422838
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2305.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2305.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:16Z",
            "pc:count": 3119025,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95542.98367,
                "count": 3119025,
                "maximum": -95290.69134,
                "minimum": -95786.75134,
                "name": "X",
                "position": 0,
                "stddev": 135.270069,
                "variance": 18297.99156
              },
              {
                "average": 2371660.96,
                "count": 3119025,
                "maximum": 2371900.676,
                "minimum": 2371427.156,
                "name": "Y",
                "position": 1,
                "stddev": 130.200777,
                "variance": 16952.24234
              },
              {
                "average": 4.775684232,
                "count": 3119025,
                "maximum": 7.351102454,
                "minimum": 1.231102454,
                "name": "Z",
                "position": 2,
                "stddev": 0.7012295392,
                "variance": 0.4917228667
              },
              {
                "average": 44026.28912,
                "count": 3119025,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10502.62237,
                "variance": 110305076.6
              },
              {
                "average": 1,
                "count": 3119025,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3119025,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4987183495,
                "count": 3119025,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999984375,
                "variance": 0.2499984375
              },
              {
                "average": 0.0004392398265,
                "count": 3119025,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02095344926,
                "variance": 0.0004390470357
              },
              {
                "average": 1.332723207,
                "count": 3119025,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4713449137,
                "variance": 0.2221660277
              },
              {
                "average": -0.4223279566,
                "count": 3119025,
                "maximum": 16.33799934,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.19471185,
                "variance": 103.9321498
              },
              {
                "average": 0.4552425838,
                "count": 3119025,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4979928245,
                "variance": 0.2479968532
              },
              {
                "average": 409.5320458,
                "count": 3119025,
                "maximum": 411,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9541289729,
                "variance": 0.910362097
              },
              {
                "average": 220417044.1,
                "count": 3119025,
                "maximum": 220417836.2,
                "minimum": 220416202,
                "name": "GpsTime",
                "position": 12,
                "stddev": 533.3893654,
                "variance": 284504.2151
              },
              {
                "average": 0.4552425838,
                "count": 3119025,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4979928245,
                "variance": 0.2479968532
              },
              {
                "average": 0,
                "count": 3119025,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3119025,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3119025,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2112862193,
                "count": 3119025,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4082210262,
                "variance": 0.1666444062
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95786.75134,
              2371427.156,
              1.231102454,
              -95290.69134,
              2371900.676,
              7.351102454
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95786.75133793666,
                    2371427.156055511,
                    1.231102454422838
                  ],
                  [
                    -95786.75133793666,
                    2371900.6760555105,
                    1.231102454422838
                  ],
                  [
                    -95290.69133793666,
                    2371900.6760555105,
                    7.351102454422838
                  ],
                  [
                    -95290.69133793666,
                    2371427.156055511,
                    7.351102454422838
                  ],
                  [
                    -95786.75133793666,
                    2371427.156055511,
                    1.231102454422838
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:16+00:00",
            "end_time": "2018-09-08T04:30:02+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2411.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.40574964273992,
              71.36360697191887,
              0.852240926909889
            ],
            [
              -156.40621826708502,
              71.36795544332607,
              0.852240926909889
            ],
            [
              -156.3926591509138,
              71.36812026211352,
              43.0122409269099
            ],
            [
              -156.39219316269825,
              71.36377175371588,
              43.0122409269099
            ],
            [
              -156.40574964273992,
              71.36360697191887,
              0.852240926909889
            ]
          ]
        ]
      },
      "bbox": [
        -156.4062183,
        71.36360697,
        0.8522409269,
        -156.3921932,
        71.36812026,
        43.01224093
      ],
      "properties": {
        "datetime": "2018-09-08T05:46:19Z",
        "pc:count": 1839957,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87758.78682,
            "count": 1839957,
            "maximum": -87518.9592,
            "minimum": -88015.3592,
            "name": "X",
            "position": 0,
            "stddev": 133.6664162,
            "variance": 17866.71083
          },
          {
            "average": 2375670.122,
            "count": 1839957,
            "maximum": 2375891.356,
            "minimum": 2375417.956,
            "name": "Y",
            "position": 1,
            "stddev": 125.9926531,
            "variance": 15874.14864
          },
          {
            "average": 1.434380656,
            "count": 1839957,
            "maximum": 43.01224093,
            "minimum": 0.8522409269,
            "name": "Z",
            "position": 2,
            "stddev": 0.6305167733,
            "variance": 0.3975514014
          },
          {
            "average": 16836.62996,
            "count": 1839957,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11428.35376,
            "variance": 130607269.7
          },
          {
            "average": 1.000005978,
            "count": 1839957,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002445070161,
            "variance": 5.97836809e-06
          },
          {
            "average": 1.000017392,
            "count": 1839957,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004170301879,
            "variance": 1.739141777e-05
          },
          {
            "average": 0.5061362847,
            "count": 1839957,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999624805,
            "variance": 0.2499624819
          },
          {
            "average": 0.0005695785282,
            "count": 1839957,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02385905316,
            "variance": 0.0005692544179
          },
          {
            "average": 6.442473384,
            "count": 1839957,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.432540785,
            "variance": 11.78233624
          },
          {
            "average": -1.326313191,
            "count": 1839957,
            "maximum": 16.83600044,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.954919822,
            "variance": 63.28074938
          },
          {
            "average": 0.496349643,
            "count": 1839957,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999868106,
            "variance": 0.2499868108
          },
          {
            "average": 414.2331609,
            "count": 1839957,
            "maximum": 416,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7449047929,
            "variance": 0.5548831504
          },
          {
            "average": 220419626.4,
            "count": 1839957,
            "maximum": 220420779.7,
            "minimum": 220418599.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 411.8438079,
            "variance": 169615.3221
          },
          {
            "average": 0.496349643,
            "count": 1839957,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999868106,
            "variance": 0.2499868108
          },
          {
            "average": 0,
            "count": 1839957,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1839957,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1839957,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08974448859,
            "count": 1839957,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2858154295,
            "variance": 0.08169045976
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88015.3592,
          2375417.956,
          0.8522409269,
          -87518.9592,
          2375891.356,
          43.01224093
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88015.35919994934,
                2375417.9562232886,
                0.852240926909889
              ],
              [
                -88015.35919994934,
                2375891.356223289,
                0.852240926909889
              ],
              [
                -87518.95919994934,
                2375891.356223289,
                43.0122409269099
              ],
              [
                -87518.95919994934,
                2375417.9562232886,
                43.0122409269099
              ],
              [
                -88015.35919994934,
                2375417.9562232886,
                0.852240926909889
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:46:19+00:00",
        "end_time": "2018-09-08T05:09:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2411.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2411.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2411.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2411.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4062183,
            71.36360697,
            0.8522409269,
            -156.3921932,
            71.36812026,
            43.01224093
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.40574964273992,
                  71.36360697191887,
                  0.852240926909889
                ],
                [
                  -156.40621826708502,
                  71.36795544332607,
                  0.852240926909889
                ],
                [
                  -156.3926591509138,
                  71.36812026211352,
                  43.0122409269099
                ],
                [
                  -156.39219316269825,
                  71.36377175371588,
                  43.0122409269099
                ],
                [
                  -156.40574964273992,
                  71.36360697191887,
                  0.852240926909889
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2411.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2411.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:46:19Z",
            "pc:count": 1839957,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87758.78682,
                "count": 1839957,
                "maximum": -87518.9592,
                "minimum": -88015.3592,
                "name": "X",
                "position": 0,
                "stddev": 133.6664162,
                "variance": 17866.71083
              },
              {
                "average": 2375670.122,
                "count": 1839957,
                "maximum": 2375891.356,
                "minimum": 2375417.956,
                "name": "Y",
                "position": 1,
                "stddev": 125.9926531,
                "variance": 15874.14864
              },
              {
                "average": 1.434380656,
                "count": 1839957,
                "maximum": 43.01224093,
                "minimum": 0.8522409269,
                "name": "Z",
                "position": 2,
                "stddev": 0.6305167733,
                "variance": 0.3975514014
              },
              {
                "average": 16836.62996,
                "count": 1839957,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11428.35376,
                "variance": 130607269.7
              },
              {
                "average": 1.000005978,
                "count": 1839957,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002445070161,
                "variance": 5.97836809e-06
              },
              {
                "average": 1.000017392,
                "count": 1839957,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004170301879,
                "variance": 1.739141777e-05
              },
              {
                "average": 0.5061362847,
                "count": 1839957,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999624805,
                "variance": 0.2499624819
              },
              {
                "average": 0.0005695785282,
                "count": 1839957,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02385905316,
                "variance": 0.0005692544179
              },
              {
                "average": 6.442473384,
                "count": 1839957,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.432540785,
                "variance": 11.78233624
              },
              {
                "average": -1.326313191,
                "count": 1839957,
                "maximum": 16.83600044,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.954919822,
                "variance": 63.28074938
              },
              {
                "average": 0.496349643,
                "count": 1839957,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999868106,
                "variance": 0.2499868108
              },
              {
                "average": 414.2331609,
                "count": 1839957,
                "maximum": 416,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7449047929,
                "variance": 0.5548831504
              },
              {
                "average": 220419626.4,
                "count": 1839957,
                "maximum": 220420779.7,
                "minimum": 220418599.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 411.8438079,
                "variance": 169615.3221
              },
              {
                "average": 0.496349643,
                "count": 1839957,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999868106,
                "variance": 0.2499868108
              },
              {
                "average": 0,
                "count": 1839957,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1839957,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1839957,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08974448859,
                "count": 1839957,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2858154295,
                "variance": 0.08169045976
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88015.3592,
              2375417.956,
              0.8522409269,
              -87518.9592,
              2375891.356,
              43.01224093
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88015.35919994934,
                    2375417.9562232886,
                    0.852240926909889
                  ],
                  [
                    -88015.35919994934,
                    2375891.356223289,
                    0.852240926909889
                  ],
                  [
                    -87518.95919994934,
                    2375891.356223289,
                    43.0122409269099
                  ],
                  [
                    -87518.95919994934,
                    2375417.9562232886,
                    43.0122409269099
                  ],
                  [
                    -88015.35919994934,
                    2375417.9562232886,
                    0.852240926909889
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:46:19+00:00",
            "end_time": "2018-09-08T05:09:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2286.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.67787178121074,
              71.32062087232612,
              -10.872208434061696
            ],
            [
              -156.67839238369254,
              71.32496738741901,
              -10.872208434061696
            ],
            [
              -156.66487397181066,
              71.3251506700419,
              20.767791565938303
            ],
            [
              -156.6643559912632,
              71.32080411393534,
              20.767791565938303
            ],
            [
              -156.67787178121074,
              71.32062087232612,
              -10.872208434061696
            ]
          ]
        ]
      },
      "bbox": [
        -156.6783924,
        71.32062087,
        -10.87220843,
        -156.664356,
        71.32515067,
        20.76779157
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:38Z",
        "pc:count": 3085201,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97904.73405,
            "count": 3085201,
            "maximum": -97658.55409,
            "minimum": -98154.49409,
            "name": "X",
            "position": 0,
            "stddev": 135.3309374,
            "variance": 18314.46261
          },
          {
            "average": 2371359.171,
            "count": 3085201,
            "maximum": 2371598.789,
            "minimum": 2371125.389,
            "name": "Y",
            "position": 1,
            "stddev": 127.3249977,
            "variance": 16211.65504
          },
          {
            "average": 2.964745139,
            "count": 3085201,
            "maximum": 20.76779157,
            "minimum": -10.87220843,
            "name": "Z",
            "position": 2,
            "stddev": 0.6719946482,
            "variance": 0.4515768072
          },
          {
            "average": 40070.8425,
            "count": 3085201,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11999.79426,
            "variance": 143995062.4
          },
          {
            "average": 1.001159082,
            "count": 3085201,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.035168535,
            "variance": 0.001236825854
          },
          {
            "average": 1.002313626,
            "count": 3085201,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05042759385,
            "variance": 0.002542942221
          },
          {
            "average": 0.502144917,
            "count": 3085201,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999954803,
            "variance": 0.2499954804
          },
          {
            "average": 0.0004084012679,
            "count": 3085201,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02020481647,
            "variance": 0.0004082346086
          },
          {
            "average": 1.345676992,
            "count": 3085201,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5474687356,
            "variance": 0.2997220164
          },
          {
            "average": 0.6348462999,
            "count": 3085201,
            "maximum": 16.3920002,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.38502214,
            "variance": 107.8486849
          },
          {
            "average": 0.515278259,
            "count": 3085201,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997666013,
            "variance": 0.2497666558
          },
          {
            "average": 406.134504,
            "count": 3085201,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9113831662,
            "variance": 0.8306192757
          },
          {
            "average": 220415116.1,
            "count": 3085201,
            "maximum": 220416178.1,
            "minimum": 220413918.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 515.3148061,
            "variance": 265549.3494
          },
          {
            "average": 0.515278259,
            "count": 3085201,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997666013,
            "variance": 0.2497666558
          },
          {
            "average": 0,
            "count": 3085201,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3085201,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3085201,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2353075213,
            "count": 3085201,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4241909358,
            "variance": 0.17993795
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98154.49409,
          2371125.389,
          -10.87220843,
          -97658.55409,
          2371598.789,
          20.76779157
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98154.49409016443,
                2371125.3892531386,
                -10.872208434061696
              ],
              [
                -98154.49409016443,
                2371598.789253139,
                -10.872208434061696
              ],
              [
                -97658.55409016443,
                2371598.789253139,
                20.767791565938303
              ],
              [
                -97658.55409016443,
                2371125.3892531386,
                20.767791565938303
              ],
              [
                -98154.49409016443,
                2371125.3892531386,
                -10.872208434061696
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:38+00:00",
        "end_time": "2018-09-08T03:51:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2286.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2286.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2286.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2286.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6783924,
            71.32062087,
            -10.87220843,
            -156.664356,
            71.32515067,
            20.76779157
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.67787178121074,
                  71.32062087232612,
                  -10.872208434061696
                ],
                [
                  -156.67839238369254,
                  71.32496738741901,
                  -10.872208434061696
                ],
                [
                  -156.66487397181066,
                  71.3251506700419,
                  20.767791565938303
                ],
                [
                  -156.6643559912632,
                  71.32080411393534,
                  20.767791565938303
                ],
                [
                  -156.67787178121074,
                  71.32062087232612,
                  -10.872208434061696
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2286.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2286.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:38Z",
            "pc:count": 3085201,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97904.73405,
                "count": 3085201,
                "maximum": -97658.55409,
                "minimum": -98154.49409,
                "name": "X",
                "position": 0,
                "stddev": 135.3309374,
                "variance": 18314.46261
              },
              {
                "average": 2371359.171,
                "count": 3085201,
                "maximum": 2371598.789,
                "minimum": 2371125.389,
                "name": "Y",
                "position": 1,
                "stddev": 127.3249977,
                "variance": 16211.65504
              },
              {
                "average": 2.964745139,
                "count": 3085201,
                "maximum": 20.76779157,
                "minimum": -10.87220843,
                "name": "Z",
                "position": 2,
                "stddev": 0.6719946482,
                "variance": 0.4515768072
              },
              {
                "average": 40070.8425,
                "count": 3085201,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11999.79426,
                "variance": 143995062.4
              },
              {
                "average": 1.001159082,
                "count": 3085201,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.035168535,
                "variance": 0.001236825854
              },
              {
                "average": 1.002313626,
                "count": 3085201,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05042759385,
                "variance": 0.002542942221
              },
              {
                "average": 0.502144917,
                "count": 3085201,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999954803,
                "variance": 0.2499954804
              },
              {
                "average": 0.0004084012679,
                "count": 3085201,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02020481647,
                "variance": 0.0004082346086
              },
              {
                "average": 1.345676992,
                "count": 3085201,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5474687356,
                "variance": 0.2997220164
              },
              {
                "average": 0.6348462999,
                "count": 3085201,
                "maximum": 16.3920002,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.38502214,
                "variance": 107.8486849
              },
              {
                "average": 0.515278259,
                "count": 3085201,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997666013,
                "variance": 0.2497666558
              },
              {
                "average": 406.134504,
                "count": 3085201,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9113831662,
                "variance": 0.8306192757
              },
              {
                "average": 220415116.1,
                "count": 3085201,
                "maximum": 220416178.1,
                "minimum": 220413918.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 515.3148061,
                "variance": 265549.3494
              },
              {
                "average": 0.515278259,
                "count": 3085201,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997666013,
                "variance": 0.2497666558
              },
              {
                "average": 0,
                "count": 3085201,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3085201,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3085201,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2353075213,
                "count": 3085201,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4241909358,
                "variance": 0.17993795
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98154.49409,
              2371125.389,
              -10.87220843,
              -97658.55409,
              2371598.789,
              20.76779157
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98154.49409016443,
                    2371125.3892531386,
                    -10.872208434061696
                  ],
                  [
                    -98154.49409016443,
                    2371598.789253139,
                    -10.872208434061696
                  ],
                  [
                    -97658.55409016443,
                    2371598.789253139,
                    20.767791565938303
                  ],
                  [
                    -97658.55409016443,
                    2371125.3892531386,
                    20.767791565938303
                  ],
                  [
                    -98154.49409016443,
                    2371125.3892531386,
                    -10.872208434061696
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:38+00:00",
            "end_time": "2018-09-08T03:51:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2452.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48100041626384,
              71.38472331373748,
              0.797055045066152
            ],
            [
              -156.481484210919,
              71.38907278475318,
              0.797055045066152
            ],
            [
              -156.46791884063066,
              71.38924272031673,
              5.057055045066152
            ],
            [
              -156.46743768582115,
              71.38489321110674,
              5.057055045066152
            ],
            [
              -156.48100041626384,
              71.38472331373748,
              0.797055045066152
            ]
          ]
        ]
      },
      "bbox": [
        -156.4814842,
        71.38472331,
        0.7970550451,
        -156.4674377,
        71.38924272,
        5.057055045
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:49Z",
        "pc:count": 2416215,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90427.89792,
            "count": 2416215,
            "maximum": -90185.19915,
            "minimum": -90681.37915,
            "name": "X",
            "position": 0,
            "stddev": 130.7632366,
            "variance": 17099.02405
          },
          {
            "average": 2378027.194,
            "count": 2416215,
            "maximum": 2378288.311,
            "minimum": 2377814.851,
            "name": "Y",
            "position": 1,
            "stddev": 127.6331478,
            "variance": 16290.22041
          },
          {
            "average": 1.952424969,
            "count": 2416215,
            "maximum": 5.057055045,
            "minimum": 0.7970550451,
            "name": "Z",
            "position": 2,
            "stddev": 0.9942428401,
            "variance": 0.9885188251
          },
          {
            "average": 16944.85006,
            "count": 2416215,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8526.836163,
            "variance": 72706934.95
          },
          {
            "average": 1,
            "count": 2416215,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2416215,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5042647281,
            "count": 2416215,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999819152,
            "variance": 0.2499819156
          },
          {
            "average": 0.000435391718,
            "count": 2416215,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02086150359,
            "variance": 0.0004352023322
          },
          {
            "average": 4.172683722,
            "count": 2416215,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.600416883,
            "variance": 12.96300173
          },
          {
            "average": -0.6984713576,
            "count": 2416215,
            "maximum": 16.3920002,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.266751704,
            "variance": 85.87268715
          },
          {
            "average": 0.5031663159,
            "count": 2416215,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999900778,
            "variance": 0.2499900779
          },
          {
            "average": 404.7934277,
            "count": 2416215,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8179633822,
            "variance": 0.6690640947
          },
          {
            "average": 220414377.9,
            "count": 2416215,
            "maximum": 220415229.1,
            "minimum": 220413182.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 489.3496847,
            "variance": 239463.1139
          },
          {
            "average": 0.5031663159,
            "count": 2416215,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999900778,
            "variance": 0.2499900779
          },
          {
            "average": 0,
            "count": 2416215,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2416215,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2416215,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.16202035,
            "count": 2416215,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3684695542,
            "variance": 0.1357698124
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90681.37915,
          2377814.851,
          0.7970550451,
          -90185.19915,
          2378288.311,
          5.057055045
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90681.3791526671,
                2377814.851044794,
                0.797055045066152
              ],
              [
                -90681.3791526671,
                2378288.311044794,
                0.797055045066152
              ],
              [
                -90185.1991526671,
                2378288.311044794,
                5.057055045066152
              ],
              [
                -90185.1991526671,
                2377814.851044794,
                5.057055045066152
              ],
              [
                -90681.3791526671,
                2377814.851044794,
                0.797055045066152
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:49+00:00",
        "end_time": "2018-09-08T03:39:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2452.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2452.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2452.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2452.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4814842,
            71.38472331,
            0.7970550451,
            -156.4674377,
            71.38924272,
            5.057055045
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48100041626384,
                  71.38472331373748,
                  0.797055045066152
                ],
                [
                  -156.481484210919,
                  71.38907278475318,
                  0.797055045066152
                ],
                [
                  -156.46791884063066,
                  71.38924272031673,
                  5.057055045066152
                ],
                [
                  -156.46743768582115,
                  71.38489321110674,
                  5.057055045066152
                ],
                [
                  -156.48100041626384,
                  71.38472331373748,
                  0.797055045066152
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2452.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2452.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:49Z",
            "pc:count": 2416215,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90427.89792,
                "count": 2416215,
                "maximum": -90185.19915,
                "minimum": -90681.37915,
                "name": "X",
                "position": 0,
                "stddev": 130.7632366,
                "variance": 17099.02405
              },
              {
                "average": 2378027.194,
                "count": 2416215,
                "maximum": 2378288.311,
                "minimum": 2377814.851,
                "name": "Y",
                "position": 1,
                "stddev": 127.6331478,
                "variance": 16290.22041
              },
              {
                "average": 1.952424969,
                "count": 2416215,
                "maximum": 5.057055045,
                "minimum": 0.7970550451,
                "name": "Z",
                "position": 2,
                "stddev": 0.9942428401,
                "variance": 0.9885188251
              },
              {
                "average": 16944.85006,
                "count": 2416215,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8526.836163,
                "variance": 72706934.95
              },
              {
                "average": 1,
                "count": 2416215,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2416215,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5042647281,
                "count": 2416215,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999819152,
                "variance": 0.2499819156
              },
              {
                "average": 0.000435391718,
                "count": 2416215,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02086150359,
                "variance": 0.0004352023322
              },
              {
                "average": 4.172683722,
                "count": 2416215,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.600416883,
                "variance": 12.96300173
              },
              {
                "average": -0.6984713576,
                "count": 2416215,
                "maximum": 16.3920002,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.266751704,
                "variance": 85.87268715
              },
              {
                "average": 0.5031663159,
                "count": 2416215,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999900778,
                "variance": 0.2499900779
              },
              {
                "average": 404.7934277,
                "count": 2416215,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8179633822,
                "variance": 0.6690640947
              },
              {
                "average": 220414377.9,
                "count": 2416215,
                "maximum": 220415229.1,
                "minimum": 220413182.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 489.3496847,
                "variance": 239463.1139
              },
              {
                "average": 0.5031663159,
                "count": 2416215,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999900778,
                "variance": 0.2499900779
              },
              {
                "average": 0,
                "count": 2416215,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2416215,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2416215,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.16202035,
                "count": 2416215,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3684695542,
                "variance": 0.1357698124
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90681.37915,
              2377814.851,
              0.7970550451,
              -90185.19915,
              2378288.311,
              5.057055045
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90681.3791526671,
                    2377814.851044794,
                    0.797055045066152
                  ],
                  [
                    -90681.3791526671,
                    2378288.311044794,
                    0.797055045066152
                  ],
                  [
                    -90185.1991526671,
                    2378288.311044794,
                    5.057055045066152
                  ],
                  [
                    -90185.1991526671,
                    2377814.851044794,
                    5.057055045066152
                  ],
                  [
                    -90681.3791526671,
                    2377814.851044794,
                    0.797055045066152
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:49+00:00",
            "end_time": "2018-09-08T03:39:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2429.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4819705516752,
              71.37243367625692,
              0.761405747689488
            ],
            [
              -156.4824541463845,
              71.3767816756791,
              0.761405747689488
            ],
            [
              -156.46889406530758,
              71.37695169105697,
              4.841405747689489
            ],
            [
              -156.46841310728965,
              71.37260365346268,
              4.841405747689489
            ],
            [
              -156.4819705516752,
              71.37243367625692,
              0.761405747689488
            ]
          ]
        ]
      },
      "bbox": [
        -156.4824541,
        71.37243368,
        0.7614057477,
        -156.4684131,
        71.37695169,
        4.841405748
      ],
      "properties": {
        "datetime": "2018-09-08T04:36:31Z",
        "pc:count": 2103545,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90534.41593,
            "count": 2103545,
            "maximum": -90270.51454,
            "minimum": -90766.77454,
            "name": "X",
            "position": 0,
            "stddev": 134.5388989,
            "variance": 18100.71532
          },
          {
            "average": 2376732.656,
            "count": 2103545,
            "maximum": 2376953.523,
            "minimum": 2376480.183,
            "name": "Y",
            "position": 1,
            "stddev": 129.9866223,
            "variance": 16896.52196
          },
          {
            "average": 1.550251834,
            "count": 2103545,
            "maximum": 4.841405748,
            "minimum": 0.7614057477,
            "name": "Z",
            "position": 2,
            "stddev": 0.9661181746,
            "variance": 0.9333843272
          },
          {
            "average": 15550.21348,
            "count": 2103545,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10093.87655,
            "variance": 101886343.8
          },
          {
            "average": 1,
            "count": 2103545,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2103545,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4947947394,
            "count": 2103545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999730234,
            "variance": 0.2499730241
          },
          {
            "average": 0.0005243529375,
            "count": 2103545,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0228927552,
            "variance": 0.0005240782407
          },
          {
            "average": 6.144628235,
            "count": 2103545,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.510085259,
            "variance": 12.32069853
          },
          {
            "average": 2.399559851,
            "count": 2103545,
            "maximum": 16.25399971,
            "minimum": -15.8039999,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.27536074,
            "variance": 68.48159537
          },
          {
            "average": 0.483421082,
            "count": 2103545,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997251827,
            "variance": 0.2497252582
          },
          {
            "average": 407.3015828,
            "count": 2103545,
            "maximum": 409,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.747959228,
            "variance": 0.5594430067
          },
          {
            "average": 220415779.5,
            "count": 2103545,
            "maximum": 220416591.3,
            "minimum": 220415201.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 482.8125322,
            "variance": 233107.9413
          },
          {
            "average": 0.483421082,
            "count": 2103545,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997251827,
            "variance": 0.2497252582
          },
          {
            "average": 0,
            "count": 2103545,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2103545,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2103545,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1203035828,
            "count": 2103545,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3253162785,
            "variance": 0.105830681
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90766.77454,
          2376480.183,
          0.7614057477,
          -90270.51454,
          2376953.523,
          4.841405748
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90766.77454117234,
                2376480.1829973487,
                0.761405747689488
              ],
              [
                -90766.77454117234,
                2376953.5229973486,
                0.761405747689488
              ],
              [
                -90270.51454117234,
                2376953.5229973486,
                4.841405747689489
              ],
              [
                -90270.51454117234,
                2376480.1829973487,
                4.841405747689489
              ],
              [
                -90766.77454117234,
                2376480.1829973487,
                0.761405747689488
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:36:31+00:00",
        "end_time": "2018-09-08T04:13:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2429.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2429.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2429.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2429.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4824541,
            71.37243368,
            0.7614057477,
            -156.4684131,
            71.37695169,
            4.841405748
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4819705516752,
                  71.37243367625692,
                  0.761405747689488
                ],
                [
                  -156.4824541463845,
                  71.3767816756791,
                  0.761405747689488
                ],
                [
                  -156.46889406530758,
                  71.37695169105697,
                  4.841405747689489
                ],
                [
                  -156.46841310728965,
                  71.37260365346268,
                  4.841405747689489
                ],
                [
                  -156.4819705516752,
                  71.37243367625692,
                  0.761405747689488
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2429.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2429.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:36:31Z",
            "pc:count": 2103545,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90534.41593,
                "count": 2103545,
                "maximum": -90270.51454,
                "minimum": -90766.77454,
                "name": "X",
                "position": 0,
                "stddev": 134.5388989,
                "variance": 18100.71532
              },
              {
                "average": 2376732.656,
                "count": 2103545,
                "maximum": 2376953.523,
                "minimum": 2376480.183,
                "name": "Y",
                "position": 1,
                "stddev": 129.9866223,
                "variance": 16896.52196
              },
              {
                "average": 1.550251834,
                "count": 2103545,
                "maximum": 4.841405748,
                "minimum": 0.7614057477,
                "name": "Z",
                "position": 2,
                "stddev": 0.9661181746,
                "variance": 0.9333843272
              },
              {
                "average": 15550.21348,
                "count": 2103545,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10093.87655,
                "variance": 101886343.8
              },
              {
                "average": 1,
                "count": 2103545,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2103545,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4947947394,
                "count": 2103545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999730234,
                "variance": 0.2499730241
              },
              {
                "average": 0.0005243529375,
                "count": 2103545,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0228927552,
                "variance": 0.0005240782407
              },
              {
                "average": 6.144628235,
                "count": 2103545,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.510085259,
                "variance": 12.32069853
              },
              {
                "average": 2.399559851,
                "count": 2103545,
                "maximum": 16.25399971,
                "minimum": -15.8039999,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.27536074,
                "variance": 68.48159537
              },
              {
                "average": 0.483421082,
                "count": 2103545,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997251827,
                "variance": 0.2497252582
              },
              {
                "average": 407.3015828,
                "count": 2103545,
                "maximum": 409,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.747959228,
                "variance": 0.5594430067
              },
              {
                "average": 220415779.5,
                "count": 2103545,
                "maximum": 220416591.3,
                "minimum": 220415201.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 482.8125322,
                "variance": 233107.9413
              },
              {
                "average": 0.483421082,
                "count": 2103545,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997251827,
                "variance": 0.2497252582
              },
              {
                "average": 0,
                "count": 2103545,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2103545,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2103545,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1203035828,
                "count": 2103545,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3253162785,
                "variance": 0.105830681
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90766.77454,
              2376480.183,
              0.7614057477,
              -90270.51454,
              2376953.523,
              4.841405748
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90766.77454117234,
                    2376480.1829973487,
                    0.761405747689488
                  ],
                  [
                    -90766.77454117234,
                    2376953.5229973486,
                    0.761405747689488
                  ],
                  [
                    -90270.51454117234,
                    2376953.5229973486,
                    4.841405747689489
                  ],
                  [
                    -90270.51454117234,
                    2376480.1829973487,
                    4.841405747689489
                  ],
                  [
                    -90766.77454117234,
                    2376480.1829973487,
                    0.761405747689488
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:36:31+00:00",
            "end_time": "2018-09-08T04:13:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2256.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.678433878176,
              71.3124268030467,
              1.402172067708618
            ],
            [
              -156.67895453116932,
              71.31677417676399,
              1.402172067708618
            ],
            [
              -156.6654399835402,
              71.31695750265462,
              13.842172067708617
            ],
            [
              -156.6649219514336,
              71.31261008792528,
              13.842172067708617
            ],
            [
              -156.678433878176,
              71.3124268030467,
              1.402172067708618
            ]
          ]
        ]
      },
      "bbox": [
        -156.6789545,
        71.3124268,
        1.402172068,
        -156.664922,
        71.3169575,
        13.84217207
      ],
      "properties": {
        "datetime": "2018-09-08T04:48:21Z",
        "pc:count": 2147925,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97922.96863,
            "count": 2147925,
            "maximum": -97715.06226,
            "minimum": -98211.04226,
            "name": "X",
            "position": 0,
            "stddev": 136.5169478,
            "variance": 18636.87705
          },
          {
            "average": 2370479.686,
            "count": 2147925,
            "maximum": 2370708.697,
            "minimum": 2370235.177,
            "name": "Y",
            "position": 1,
            "stddev": 126.9822907,
            "variance": 16124.50214
          },
          {
            "average": 2.479201568,
            "count": 2147925,
            "maximum": 13.84217207,
            "minimum": 1.402172068,
            "name": "Z",
            "position": 2,
            "stddev": 1.093137144,
            "variance": 1.194948816
          },
          {
            "average": 33567.74295,
            "count": 2147925,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17681.85482,
            "variance": 312647989.8
          },
          {
            "average": 1.003155604,
            "count": 2147925,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05769011263,
            "variance": 0.003328149096
          },
          {
            "average": 1.00631307,
            "count": 2147925,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08258766899,
            "variance": 0.006820723069
          },
          {
            "average": 0.4966151053,
            "count": 2147925,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999886587,
            "variance": 0.2499886589
          },
          {
            "average": 0.0004972240651,
            "count": 2147925,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02229298241,
            "variance": 0.0004969770647
          },
          {
            "average": 4.588240744,
            "count": 2147925,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.72928503,
            "variance": 13.90756683
          },
          {
            "average": 2.322748966,
            "count": 2147925,
            "maximum": 16.33200073,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.569042131,
            "variance": 73.42848304
          },
          {
            "average": 0.5162894421,
            "count": 2147925,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997347,
            "variance": 0.2497347703
          },
          {
            "average": 407.8881469,
            "count": 2147925,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7834317036,
            "variance": 0.6137652342
          },
          {
            "average": 220416109,
            "count": 2147925,
            "maximum": 220417301.2,
            "minimum": 220415037.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 446.820976,
            "variance": 199648.9846
          },
          {
            "average": 0.5162894421,
            "count": 2147925,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997347,
            "variance": 0.2497347703
          },
          {
            "average": 0,
            "count": 2147925,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2147925,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2147925,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1386668529,
            "count": 2147925,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3455986291,
            "variance": 0.1194384124
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98211.04226,
          2370235.177,
          1.402172068,
          -97715.06226,
          2370708.697,
          13.84217207
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98211.04225531821,
                2370235.1771694543,
                1.402172067708618
              ],
              [
                -98211.04225531821,
                2370708.697169454,
                1.402172067708618
              ],
              [
                -97715.0622553182,
                2370708.697169454,
                13.842172067708617
              ],
              [
                -97715.0622553182,
                2370235.1771694543,
                13.842172067708617
              ],
              [
                -98211.04225531821,
                2370235.1771694543,
                1.402172067708618
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:48:21+00:00",
        "end_time": "2018-09-08T04:10:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2256.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2256.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2256.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2256.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6789545,
            71.3124268,
            1.402172068,
            -156.664922,
            71.3169575,
            13.84217207
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.678433878176,
                  71.3124268030467,
                  1.402172067708618
                ],
                [
                  -156.67895453116932,
                  71.31677417676399,
                  1.402172067708618
                ],
                [
                  -156.6654399835402,
                  71.31695750265462,
                  13.842172067708617
                ],
                [
                  -156.6649219514336,
                  71.31261008792528,
                  13.842172067708617
                ],
                [
                  -156.678433878176,
                  71.3124268030467,
                  1.402172067708618
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2256.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2256.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:48:21Z",
            "pc:count": 2147925,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97922.96863,
                "count": 2147925,
                "maximum": -97715.06226,
                "minimum": -98211.04226,
                "name": "X",
                "position": 0,
                "stddev": 136.5169478,
                "variance": 18636.87705
              },
              {
                "average": 2370479.686,
                "count": 2147925,
                "maximum": 2370708.697,
                "minimum": 2370235.177,
                "name": "Y",
                "position": 1,
                "stddev": 126.9822907,
                "variance": 16124.50214
              },
              {
                "average": 2.479201568,
                "count": 2147925,
                "maximum": 13.84217207,
                "minimum": 1.402172068,
                "name": "Z",
                "position": 2,
                "stddev": 1.093137144,
                "variance": 1.194948816
              },
              {
                "average": 33567.74295,
                "count": 2147925,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17681.85482,
                "variance": 312647989.8
              },
              {
                "average": 1.003155604,
                "count": 2147925,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05769011263,
                "variance": 0.003328149096
              },
              {
                "average": 1.00631307,
                "count": 2147925,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08258766899,
                "variance": 0.006820723069
              },
              {
                "average": 0.4966151053,
                "count": 2147925,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999886587,
                "variance": 0.2499886589
              },
              {
                "average": 0.0004972240651,
                "count": 2147925,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02229298241,
                "variance": 0.0004969770647
              },
              {
                "average": 4.588240744,
                "count": 2147925,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.72928503,
                "variance": 13.90756683
              },
              {
                "average": 2.322748966,
                "count": 2147925,
                "maximum": 16.33200073,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.569042131,
                "variance": 73.42848304
              },
              {
                "average": 0.5162894421,
                "count": 2147925,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997347,
                "variance": 0.2497347703
              },
              {
                "average": 407.8881469,
                "count": 2147925,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7834317036,
                "variance": 0.6137652342
              },
              {
                "average": 220416109,
                "count": 2147925,
                "maximum": 220417301.2,
                "minimum": 220415037.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 446.820976,
                "variance": 199648.9846
              },
              {
                "average": 0.5162894421,
                "count": 2147925,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997347,
                "variance": 0.2497347703
              },
              {
                "average": 0,
                "count": 2147925,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2147925,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2147925,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1386668529,
                "count": 2147925,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3455986291,
                "variance": 0.1194384124
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98211.04226,
              2370235.177,
              1.402172068,
              -97715.06226,
              2370708.697,
              13.84217207
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98211.04225531821,
                    2370235.1771694543,
                    1.402172067708618
                  ],
                  [
                    -98211.04225531821,
                    2370708.697169454,
                    1.402172067708618
                  ],
                  [
                    -97715.0622553182,
                    2370708.697169454,
                    13.842172067708617
                  ],
                  [
                    -97715.0622553182,
                    2370235.1771694543,
                    13.842172067708617
                  ],
                  [
                    -98211.04225531821,
                    2370235.1771694543,
                    1.402172067708618
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:48:21+00:00",
            "end_time": "2018-09-08T04:10:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2236.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.71703516066322,
              71.3085943369107,
              1.594379910824135
            ],
            [
              -156.7175632003361,
              71.31294131138766,
              1.594379910824135
            ],
            [
              -156.70405509898399,
              71.3131272274593,
              15.514379910824136
            ],
            [
              -156.70352967820307,
              71.30878021140387,
              15.514379910824136
            ],
            [
              -156.71703516066322,
              71.3085943369107,
              1.594379910824135
            ]
          ]
        ]
      },
      "bbox": [
        -156.7175632,
        71.30859434,
        1.594379911,
        -156.7035297,
        71.31312723,
        15.51437991
      ],
      "properties": {
        "datetime": "2018-09-08T04:29:06Z",
        "pc:count": 2501408,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -99361.89724,
            "count": 2501408,
            "maximum": -99146.88449,
            "minimum": -99642.72449,
            "name": "X",
            "position": 0,
            "stddev": 130.5112983,
            "variance": 17033.19898
          },
          {
            "average": 2370105.431,
            "count": 2501408,
            "maximum": 2370349.414,
            "minimum": 2369875.914,
            "name": "Y",
            "position": 1,
            "stddev": 132.7081148,
            "variance": 17611.44372
          },
          {
            "average": 3.710822179,
            "count": 2501408,
            "maximum": 15.51437991,
            "minimum": 1.594379911,
            "name": "Z",
            "position": 2,
            "stddev": 0.6465301301,
            "variance": 0.4180012091
          },
          {
            "average": 32867.9688,
            "count": 2501408,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 15121.29186,
            "variance": 228653467.5
          },
          {
            "average": 1.002704877,
            "count": 2501408,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05270973236,
            "variance": 0.002778315886
          },
          {
            "average": 1.005406555,
            "count": 2501408,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.07496392462,
            "variance": 0.005619589995
          },
          {
            "average": 0.5021567853,
            "count": 2501408,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999954482,
            "variance": 0.2499954482
          },
          {
            "average": 0.0005257039236,
            "count": 2501408,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02292221126,
            "variance": 0.000525427769
          },
          {
            "average": 3.696701218,
            "count": 2501408,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.51235758,
            "variance": 12.33665577
          },
          {
            "average": 1.162036671,
            "count": 2501408,
            "maximum": 16.3560009,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.317320393,
            "variance": 86.8124593
          },
          {
            "average": 0.5278938902,
            "count": 2501408,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992214243,
            "variance": 0.2492220305
          },
          {
            "average": 406.3091223,
            "count": 2501408,
            "maximum": 408,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9178757149,
            "variance": 0.8424958281
          },
          {
            "average": 220415214.3,
            "count": 2501408,
            "maximum": 220416146.4,
            "minimum": 220413886.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 514.7996631,
            "variance": 265018.6932
          },
          {
            "average": 0.5278938902,
            "count": 2501408,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992214243,
            "variance": 0.2492220305
          },
          {
            "average": 0,
            "count": 2501408,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2501408,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2501408,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1861283725,
            "count": 2501408,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3892103056,
            "variance": 0.151484662
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99642.72449,
          2369875.914,
          1.594379911,
          -99146.88449,
          2370349.414,
          15.51437991
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99642.72448740277,
                2369875.914459498,
                1.594379910824135
              ],
              [
                -99642.72448740277,
                2370349.414459498,
                1.594379910824135
              ],
              [
                -99146.88448740277,
                2370349.414459498,
                15.514379910824136
              ],
              [
                -99146.88448740277,
                2369875.914459498,
                15.514379910824136
              ],
              [
                -99642.72448740277,
                2369875.914459498,
                1.594379910824135
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:29:06+00:00",
        "end_time": "2018-09-08T03:51:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2236.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2236.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2236.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2236.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7175632,
            71.30859434,
            1.594379911,
            -156.7035297,
            71.31312723,
            15.51437991
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.71703516066322,
                  71.3085943369107,
                  1.594379910824135
                ],
                [
                  -156.7175632003361,
                  71.31294131138766,
                  1.594379910824135
                ],
                [
                  -156.70405509898399,
                  71.3131272274593,
                  15.514379910824136
                ],
                [
                  -156.70352967820307,
                  71.30878021140387,
                  15.514379910824136
                ],
                [
                  -156.71703516066322,
                  71.3085943369107,
                  1.594379910824135
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2236.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2236.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:29:06Z",
            "pc:count": 2501408,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -99361.89724,
                "count": 2501408,
                "maximum": -99146.88449,
                "minimum": -99642.72449,
                "name": "X",
                "position": 0,
                "stddev": 130.5112983,
                "variance": 17033.19898
              },
              {
                "average": 2370105.431,
                "count": 2501408,
                "maximum": 2370349.414,
                "minimum": 2369875.914,
                "name": "Y",
                "position": 1,
                "stddev": 132.7081148,
                "variance": 17611.44372
              },
              {
                "average": 3.710822179,
                "count": 2501408,
                "maximum": 15.51437991,
                "minimum": 1.594379911,
                "name": "Z",
                "position": 2,
                "stddev": 0.6465301301,
                "variance": 0.4180012091
              },
              {
                "average": 32867.9688,
                "count": 2501408,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 15121.29186,
                "variance": 228653467.5
              },
              {
                "average": 1.002704877,
                "count": 2501408,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05270973236,
                "variance": 0.002778315886
              },
              {
                "average": 1.005406555,
                "count": 2501408,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.07496392462,
                "variance": 0.005619589995
              },
              {
                "average": 0.5021567853,
                "count": 2501408,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999954482,
                "variance": 0.2499954482
              },
              {
                "average": 0.0005257039236,
                "count": 2501408,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02292221126,
                "variance": 0.000525427769
              },
              {
                "average": 3.696701218,
                "count": 2501408,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.51235758,
                "variance": 12.33665577
              },
              {
                "average": 1.162036671,
                "count": 2501408,
                "maximum": 16.3560009,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.317320393,
                "variance": 86.8124593
              },
              {
                "average": 0.5278938902,
                "count": 2501408,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992214243,
                "variance": 0.2492220305
              },
              {
                "average": 406.3091223,
                "count": 2501408,
                "maximum": 408,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9178757149,
                "variance": 0.8424958281
              },
              {
                "average": 220415214.3,
                "count": 2501408,
                "maximum": 220416146.4,
                "minimum": 220413886.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 514.7996631,
                "variance": 265018.6932
              },
              {
                "average": 0.5278938902,
                "count": 2501408,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992214243,
                "variance": 0.2492220305
              },
              {
                "average": 0,
                "count": 2501408,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2501408,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2501408,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1861283725,
                "count": 2501408,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3892103056,
                "variance": 0.151484662
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99642.72449,
              2369875.914,
              1.594379911,
              -99146.88449,
              2370349.414,
              15.51437991
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99642.72448740277,
                    2369875.914459498,
                    1.594379910824135
                  ],
                  [
                    -99642.72448740277,
                    2370349.414459498,
                    1.594379910824135
                  ],
                  [
                    -99146.88448740277,
                    2370349.414459498,
                    15.514379910824136
                  ],
                  [
                    -99146.88448740277,
                    2369875.914459498,
                    15.514379910824136
                  ],
                  [
                    -99642.72448740277,
                    2369875.914459498,
                    1.594379910824135
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:29:06+00:00",
            "end_time": "2018-09-08T03:51:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2322.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.56222222717568,
              71.32797187885878,
              0.817743645881964
            ],
            [
              -156.56272073205722,
              71.33232074644637,
              0.817743645881964
            ],
            [
              -156.54994521653796,
              71.33248642790798,
              1.877743645881964
            ],
            [
              -156.5494491918741,
              71.32813752320955,
              1.877743645881964
            ],
            [
              -156.56222222717568,
              71.32797187885878,
              0.817743645881964
            ]
          ]
        ]
      },
      "bbox": [
        -156.5627207,
        71.32797188,
        0.8177436459,
        -156.5494492,
        71.33248643,
        1.877743646
      ],
      "properties": {
        "datetime": "2018-09-11T17:27:33Z",
        "pc:count": 1631041,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93662.59111,
            "count": 1631041,
            "maximum": -93418.27938,
            "minimum": -93886.77938,
            "name": "X",
            "position": 0,
            "stddev": 111.9036069,
            "variance": 12522.41723
          },
          {
            "average": 2371975.004,
            "count": 1631041,
            "maximum": 2372231.129,
            "minimum": 2371757.529,
            "name": "Y",
            "position": 1,
            "stddev": 130.4153404,
            "variance": 17008.16102
          },
          {
            "average": 1.182908255,
            "count": 1631041,
            "maximum": 1.877743646,
            "minimum": 0.8177436459,
            "name": "Z",
            "position": 2,
            "stddev": 0.06823000565,
            "variance": 0.00465533367
          },
          {
            "average": 16471.56931,
            "count": 1631041,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12947.53498,
            "variance": 167638662.1
          },
          {
            "average": 1,
            "count": 1631041,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1631041,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5004129265,
            "count": 1631041,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999828,
            "variance": 0.2499999828
          },
          {
            "average": 0.0007351133417,
            "count": 1631041,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0271030146,
            "variance": 0.0007345734005
          },
          {
            "average": 7.604452003,
            "count": 1631041,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.647105582,
            "variance": 7.007167962
          },
          {
            "average": -0.004562162573,
            "count": 1631041,
            "maximum": 16.45199966,
            "minimum": -19.50600052,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.336481871,
            "variance": 53.82396624
          },
          {
            "average": 0.4787525268,
            "count": 1631041,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499548494,
            "variance": 0.2495486979
          },
          {
            "average": 419.8784936,
            "count": 1631041,
            "maximum": 451,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.514389,
            "variance": 240.6962659
          },
          {
            "average": 220481432.1,
            "count": 1631041,
            "maximum": 220722053.5,
            "minimum": 220417371.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 123107.7159,
            "variance": 15155509710.0
          },
          {
            "average": 0.4787525268,
            "count": 1631041,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499548494,
            "variance": 0.2495486979
          },
          {
            "average": 0,
            "count": 1631041,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1631041,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1631041,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05544189263,
            "count": 1631041,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2288408208,
            "variance": 0.05236812128
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93886.77938,
          2371757.529,
          0.8177436459,
          -93418.27938,
          2372231.129,
          1.877743646
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93886.77937521818,
                2371757.529375865,
                0.817743645881964
              ],
              [
                -93886.77937521818,
                2372231.1293758648,
                0.817743645881964
              ],
              [
                -93418.27937521818,
                2372231.1293758648,
                1.877743645881964
              ],
              [
                -93418.27937521818,
                2371757.529375865,
                1.877743645881964
              ],
              [
                -93886.77937521818,
                2371757.529375865,
                0.817743645881964
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:27:33+00:00",
        "end_time": "2018-09-08T04:49:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2322.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2322.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2322.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2322.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5627207,
            71.32797188,
            0.8177436459,
            -156.5494492,
            71.33248643,
            1.877743646
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.56222222717568,
                  71.32797187885878,
                  0.817743645881964
                ],
                [
                  -156.56272073205722,
                  71.33232074644637,
                  0.817743645881964
                ],
                [
                  -156.54994521653796,
                  71.33248642790798,
                  1.877743645881964
                ],
                [
                  -156.5494491918741,
                  71.32813752320955,
                  1.877743645881964
                ],
                [
                  -156.56222222717568,
                  71.32797187885878,
                  0.817743645881964
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2322.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2322.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:27:33Z",
            "pc:count": 1631041,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93662.59111,
                "count": 1631041,
                "maximum": -93418.27938,
                "minimum": -93886.77938,
                "name": "X",
                "position": 0,
                "stddev": 111.9036069,
                "variance": 12522.41723
              },
              {
                "average": 2371975.004,
                "count": 1631041,
                "maximum": 2372231.129,
                "minimum": 2371757.529,
                "name": "Y",
                "position": 1,
                "stddev": 130.4153404,
                "variance": 17008.16102
              },
              {
                "average": 1.182908255,
                "count": 1631041,
                "maximum": 1.877743646,
                "minimum": 0.8177436459,
                "name": "Z",
                "position": 2,
                "stddev": 0.06823000565,
                "variance": 0.00465533367
              },
              {
                "average": 16471.56931,
                "count": 1631041,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12947.53498,
                "variance": 167638662.1
              },
              {
                "average": 1,
                "count": 1631041,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1631041,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5004129265,
                "count": 1631041,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999828,
                "variance": 0.2499999828
              },
              {
                "average": 0.0007351133417,
                "count": 1631041,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0271030146,
                "variance": 0.0007345734005
              },
              {
                "average": 7.604452003,
                "count": 1631041,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.647105582,
                "variance": 7.007167962
              },
              {
                "average": -0.004562162573,
                "count": 1631041,
                "maximum": 16.45199966,
                "minimum": -19.50600052,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.336481871,
                "variance": 53.82396624
              },
              {
                "average": 0.4787525268,
                "count": 1631041,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499548494,
                "variance": 0.2495486979
              },
              {
                "average": 419.8784936,
                "count": 1631041,
                "maximum": 451,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.514389,
                "variance": 240.6962659
              },
              {
                "average": 220481432.1,
                "count": 1631041,
                "maximum": 220722053.5,
                "minimum": 220417371.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 123107.7159,
                "variance": 15155509710.0
              },
              {
                "average": 0.4787525268,
                "count": 1631041,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499548494,
                "variance": 0.2495486979
              },
              {
                "average": 0,
                "count": 1631041,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1631041,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1631041,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05544189263,
                "count": 1631041,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2288408208,
                "variance": 0.05236812128
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93886.77938,
              2371757.529,
              0.8177436459,
              -93418.27938,
              2372231.129,
              1.877743646
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93886.77937521818,
                    2371757.529375865,
                    0.817743645881964
                  ],
                  [
                    -93886.77937521818,
                    2372231.1293758648,
                    0.817743645881964
                  ],
                  [
                    -93418.27937521818,
                    2372231.1293758648,
                    1.877743645881964
                  ],
                  [
                    -93418.27937521818,
                    2371757.529375865,
                    1.877743645881964
                  ],
                  [
                    -93886.77937521818,
                    2371757.529375865,
                    0.817743645881964
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:27:33+00:00",
            "end_time": "2018-09-08T04:49:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2400.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.39328013808083,
              71.35940333755998,
              -91.54935625766937
            ],
            [
              -156.3937463058551,
              71.36375226454844,
              -91.54935625766937
            ],
            [
              -156.3801896495562,
              71.36391622236644,
              3.610643742330623
            ],
            [
              -156.37972611732485,
              71.3595672585859,
              3.610643742330623
            ],
            [
              -156.39328013808083,
              71.35940333755998,
              -91.54935625766937
            ]
          ]
        ]
      },
      "bbox": [
        -156.3937463,
        71.35940334,
        -91.54935626,
        -156.3797261,
        71.36391622,
        3.610643742
      ],
      "properties": {
        "datetime": "2018-09-08T06:04:35Z",
        "pc:count": 1612290,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87325.82034,
            "count": 1612290,
            "maximum": -87079.43312,
            "minimum": -87575.83312,
            "name": "X",
            "position": 0,
            "stddev": 135.3967418,
            "variance": 18332.2777
          },
          {
            "average": 2375189.199,
            "count": 1612290,
            "maximum": 2375417.885,
            "minimum": 2374944.425,
            "name": "Y",
            "position": 1,
            "stddev": 134.2393579,
            "variance": 18020.2052
          },
          {
            "average": 1.255400963,
            "count": 1612290,
            "maximum": 3.610643742,
            "minimum": -91.54935626,
            "name": "Z",
            "position": 2,
            "stddev": 0.4211941897,
            "variance": 0.1774045455
          },
          {
            "average": 18732.54581,
            "count": 1612290,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13909.33084,
            "variance": 193469484.5
          },
          {
            "average": 1.00000062,
            "count": 1612290,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000787550515,
            "variance": 6.202358137e-07
          },
          {
            "average": 1.00000124,
            "count": 1612290,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001113764274,
            "variance": 1.240470858e-06
          },
          {
            "average": 0.5011660433,
            "count": 1612290,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999987954,
            "variance": 0.2499987954
          },
          {
            "average": 0.0006983855262,
            "count": 1612290,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02641776328,
            "variance": 0.0006978982167
          },
          {
            "average": 7.455048409,
            "count": 1612290,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.75895888,
            "variance": 7.611854099
          },
          {
            "average": 0.05056292001,
            "count": 1612290,
            "maximum": 16.45800018,
            "minimum": -15.91800022,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.62906781,
            "variance": 58.20267565
          },
          {
            "average": 0.4858753698,
            "count": 1612290,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49980061,
            "variance": 0.2498006498
          },
          {
            "average": 416.012597,
            "count": 1612290,
            "maximum": 418,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7252731731,
            "variance": 0.5260211756
          },
          {
            "average": 220420590.4,
            "count": 1612290,
            "maximum": 220421875.3,
            "minimum": 220419677.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 435.0405777,
            "variance": 189260.3042
          },
          {
            "average": 0.4858753698,
            "count": 1612290,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49980061,
            "variance": 0.2498006498
          },
          {
            "average": 0,
            "count": 1612290,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1612290,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1612290,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04786793939,
            "count": 1612290,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2134868334,
            "variance": 0.04557662804
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87575.83312,
          2374944.425,
          -91.54935626,
          -87079.43312,
          2375417.885,
          3.610643742
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87575.83312194877,
                2374944.424712838,
                -91.54935625766937
              ],
              [
                -87575.83312194877,
                2375417.884712838,
                -91.54935625766937
              ],
              [
                -87079.43312194878,
                2375417.884712838,
                3.610643742330623
              ],
              [
                -87079.43312194878,
                2374944.424712838,
                3.610643742330623
              ],
              [
                -87575.83312194877,
                2374944.424712838,
                -91.54935625766937
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:04:35+00:00",
        "end_time": "2018-09-08T05:27:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2400.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2400.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2400.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2400.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3937463,
            71.35940334,
            -91.54935626,
            -156.3797261,
            71.36391622,
            3.610643742
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.39328013808083,
                  71.35940333755998,
                  -91.54935625766937
                ],
                [
                  -156.3937463058551,
                  71.36375226454844,
                  -91.54935625766937
                ],
                [
                  -156.3801896495562,
                  71.36391622236644,
                  3.610643742330623
                ],
                [
                  -156.37972611732485,
                  71.3595672585859,
                  3.610643742330623
                ],
                [
                  -156.39328013808083,
                  71.35940333755998,
                  -91.54935625766937
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2400.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2400.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:04:35Z",
            "pc:count": 1612290,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87325.82034,
                "count": 1612290,
                "maximum": -87079.43312,
                "minimum": -87575.83312,
                "name": "X",
                "position": 0,
                "stddev": 135.3967418,
                "variance": 18332.2777
              },
              {
                "average": 2375189.199,
                "count": 1612290,
                "maximum": 2375417.885,
                "minimum": 2374944.425,
                "name": "Y",
                "position": 1,
                "stddev": 134.2393579,
                "variance": 18020.2052
              },
              {
                "average": 1.255400963,
                "count": 1612290,
                "maximum": 3.610643742,
                "minimum": -91.54935626,
                "name": "Z",
                "position": 2,
                "stddev": 0.4211941897,
                "variance": 0.1774045455
              },
              {
                "average": 18732.54581,
                "count": 1612290,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13909.33084,
                "variance": 193469484.5
              },
              {
                "average": 1.00000062,
                "count": 1612290,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000787550515,
                "variance": 6.202358137e-07
              },
              {
                "average": 1.00000124,
                "count": 1612290,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001113764274,
                "variance": 1.240470858e-06
              },
              {
                "average": 0.5011660433,
                "count": 1612290,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999987954,
                "variance": 0.2499987954
              },
              {
                "average": 0.0006983855262,
                "count": 1612290,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02641776328,
                "variance": 0.0006978982167
              },
              {
                "average": 7.455048409,
                "count": 1612290,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.75895888,
                "variance": 7.611854099
              },
              {
                "average": 0.05056292001,
                "count": 1612290,
                "maximum": 16.45800018,
                "minimum": -15.91800022,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.62906781,
                "variance": 58.20267565
              },
              {
                "average": 0.4858753698,
                "count": 1612290,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49980061,
                "variance": 0.2498006498
              },
              {
                "average": 416.012597,
                "count": 1612290,
                "maximum": 418,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7252731731,
                "variance": 0.5260211756
              },
              {
                "average": 220420590.4,
                "count": 1612290,
                "maximum": 220421875.3,
                "minimum": 220419677.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 435.0405777,
                "variance": 189260.3042
              },
              {
                "average": 0.4858753698,
                "count": 1612290,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49980061,
                "variance": 0.2498006498
              },
              {
                "average": 0,
                "count": 1612290,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1612290,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1612290,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04786793939,
                "count": 1612290,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2134868334,
                "variance": 0.04557662804
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87575.83312,
              2374944.425,
              -91.54935626,
              -87079.43312,
              2375417.885,
              3.610643742
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87575.83312194877,
                    2374944.424712838,
                    -91.54935625766937
                  ],
                  [
                    -87575.83312194877,
                    2375417.884712838,
                    -91.54935625766937
                  ],
                  [
                    -87079.43312194878,
                    2375417.884712838,
                    3.610643742330623
                  ],
                  [
                    -87079.43312194878,
                    2374944.424712838,
                    3.610643742330623
                  ],
                  [
                    -87575.83312194877,
                    2374944.424712838,
                    -91.54935625766937
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:04:35+00:00",
            "end_time": "2018-09-08T05:27:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2323.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.5494655839589,
              71.3281350612912,
              1.021776105673444
            ],
            [
              -156.54947616024154,
              71.3282278047604,
              1.021776105673444
            ],
            [
              -156.54936219673925,
              71.32822927894776,
              1.381776105673444
            ],
            [
              -156.54935162092846,
              71.3281365354715,
              1.381776105673444
            ],
            [
              -156.5494655839589,
              71.3281350612912,
              1.021776105673444
            ]
          ]
        ]
      },
      "bbox": [
        -156.5494762,
        71.32813506,
        1.021776106,
        -156.5493516,
        71.32822928,
        1.381776106
      ],
      "properties": {
        "datetime": "2018-09-11T17:27:27Z",
        "pc:count": 374,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93417.38656,
            "count": 374,
            "maximum": -93414.71001,
            "minimum": -93418.89001,
            "name": "X",
            "position": 0,
            "stddev": 1.001569613,
            "variance": 1.00314169
          },
          {
            "average": 2371760.558,
            "count": 374,
            "maximum": 2371767.385,
            "minimum": 2371757.285,
            "name": "Y",
            "position": 1,
            "stddev": 2.345206686,
            "variance": 5.4999944
          },
          {
            "average": 1.168514074,
            "count": 374,
            "maximum": 1.381776106,
            "minimum": 1.021776106,
            "name": "Z",
            "position": 2,
            "stddev": 0.06237954228,
            "variance": 0.003891207295
          },
          {
            "average": 13859.04011,
            "count": 374,
            "maximum": 65535,
            "minimum": 1838,
            "name": "Intensity",
            "position": 3,
            "stddev": 12520.52839,
            "variance": 156763631.3
          },
          {
            "average": 1,
            "count": 374,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 374,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5213903743,
            "count": 374,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5002114218,
            "variance": 0.2502114665
          },
          {
            "average": 0.005347593583,
            "count": 374,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.07302915083,
            "variance": 0.005333256871
          },
          {
            "average": 6.053475936,
            "count": 374,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.74986344,
            "variance": 14.06147582
          },
          {
            "average": -8.851106967,
            "count": 374,
            "maximum": 14.15400028,
            "minimum": -19.31399918,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.184237957,
            "variance": 84.35022685
          },
          {
            "average": 0.5748663102,
            "count": 374,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4950255046,
            "variance": 0.2450502502
          },
          {
            "average": 433.2967914,
            "count": 374,
            "maximum": 451,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.83682266,
            "variance": 354.8258878
          },
          {
            "average": 220582591.7,
            "count": 374,
            "maximum": 220722047.3,
            "minimum": 220418485.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 151248.6983,
            "variance": 22876168750.0
          },
          {
            "average": 0.5748663102,
            "count": 374,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4950255046,
            "variance": 0.2450502502
          },
          {
            "average": 0,
            "count": 374,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 374,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 374,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2272727273,
            "count": 374,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4196315829,
            "variance": 0.1760906654
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93418.89001,
          2371757.285,
          1.021776106,
          -93414.71001,
          2371767.385,
          1.381776106
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93418.89001004046,
                2371757.284719821,
                1.021776105673444
              ],
              [
                -93418.89001004046,
                2371767.3847198207,
                1.021776105673444
              ],
              [
                -93414.71001004046,
                2371767.3847198207,
                1.381776105673444
              ],
              [
                -93414.71001004046,
                2371757.284719821,
                1.381776105673444
              ],
              [
                -93418.89001004046,
                2371757.284719821,
                1.021776105673444
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:27:27+00:00",
        "end_time": "2018-09-08T05:08:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2323.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2323.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2323.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2323.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5494762,
            71.32813506,
            1.021776106,
            -156.5493516,
            71.32822928,
            1.381776106
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.5494655839589,
                  71.3281350612912,
                  1.021776105673444
                ],
                [
                  -156.54947616024154,
                  71.3282278047604,
                  1.021776105673444
                ],
                [
                  -156.54936219673925,
                  71.32822927894776,
                  1.381776105673444
                ],
                [
                  -156.54935162092846,
                  71.3281365354715,
                  1.381776105673444
                ],
                [
                  -156.5494655839589,
                  71.3281350612912,
                  1.021776105673444
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2323.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2323.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:27:27Z",
            "pc:count": 374,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93417.38656,
                "count": 374,
                "maximum": -93414.71001,
                "minimum": -93418.89001,
                "name": "X",
                "position": 0,
                "stddev": 1.001569613,
                "variance": 1.00314169
              },
              {
                "average": 2371760.558,
                "count": 374,
                "maximum": 2371767.385,
                "minimum": 2371757.285,
                "name": "Y",
                "position": 1,
                "stddev": 2.345206686,
                "variance": 5.4999944
              },
              {
                "average": 1.168514074,
                "count": 374,
                "maximum": 1.381776106,
                "minimum": 1.021776106,
                "name": "Z",
                "position": 2,
                "stddev": 0.06237954228,
                "variance": 0.003891207295
              },
              {
                "average": 13859.04011,
                "count": 374,
                "maximum": 65535,
                "minimum": 1838,
                "name": "Intensity",
                "position": 3,
                "stddev": 12520.52839,
                "variance": 156763631.3
              },
              {
                "average": 1,
                "count": 374,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 374,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5213903743,
                "count": 374,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5002114218,
                "variance": 0.2502114665
              },
              {
                "average": 0.005347593583,
                "count": 374,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.07302915083,
                "variance": 0.005333256871
              },
              {
                "average": 6.053475936,
                "count": 374,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.74986344,
                "variance": 14.06147582
              },
              {
                "average": -8.851106967,
                "count": 374,
                "maximum": 14.15400028,
                "minimum": -19.31399918,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.184237957,
                "variance": 84.35022685
              },
              {
                "average": 0.5748663102,
                "count": 374,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4950255046,
                "variance": 0.2450502502
              },
              {
                "average": 433.2967914,
                "count": 374,
                "maximum": 451,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.83682266,
                "variance": 354.8258878
              },
              {
                "average": 220582591.7,
                "count": 374,
                "maximum": 220722047.3,
                "minimum": 220418485.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 151248.6983,
                "variance": 22876168750.0
              },
              {
                "average": 0.5748663102,
                "count": 374,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4950255046,
                "variance": 0.2450502502
              },
              {
                "average": 0,
                "count": 374,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 374,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 374,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2272727273,
                "count": 374,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4196315829,
                "variance": 0.1760906654
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93418.89001,
              2371757.285,
              1.021776106,
              -93414.71001,
              2371767.385,
              1.381776106
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93418.89001004046,
                    2371757.284719821,
                    1.021776105673444
                  ],
                  [
                    -93418.89001004046,
                    2371767.3847198207,
                    1.021776105673444
                  ],
                  [
                    -93414.71001004046,
                    2371767.3847198207,
                    1.381776105673444
                  ],
                  [
                    -93414.71001004046,
                    2371757.284719821,
                    1.381776105673444
                  ],
                  [
                    -93418.89001004046,
                    2371757.284719821,
                    1.021776105673444
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:27:27+00:00",
            "end_time": "2018-09-08T05:08:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2278.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.58869263143416,
              71.31587446209366,
              3.591597691923206
            ],
            [
              -156.58919609652017,
              71.3202236396859,
              3.591597691923206
            ],
            [
              -156.5756776538481,
              71.32040082916177,
              4.251597691923206
            ],
            [
              -156.57517681211542,
              71.31605161190593,
              4.251597691923206
            ],
            [
              -156.58869263143416,
              71.31587446209366,
              3.591597691923206
            ]
          ]
        ]
      },
      "bbox": [
        -156.5891961,
        71.31587446,
        3.591597692,
        -156.5751768,
        71.32040083,
        4.251597692
      ],
      "properties": {
        "datetime": "2018-09-08T05:33:22Z",
        "pc:count": 2756855,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94665.83558,
            "count": 2756855,
            "maximum": -94411.52301,
            "minimum": -94907.54301,
            "name": "X",
            "position": 0,
            "stddev": 139.5324835,
            "variance": 19469.31395
          },
          {
            "average": 2370712.864,
            "count": 2756855,
            "maximum": 2370953.3,
            "minimum": 2370479.62,
            "name": "Y",
            "position": 1,
            "stddev": 128.8256164,
            "variance": 16596.03944
          },
          {
            "average": 3.841130649,
            "count": 2756855,
            "maximum": 4.251597692,
            "minimum": 3.591597692,
            "name": "Z",
            "position": 2,
            "stddev": 0.05571006111,
            "variance": 0.003103610909
          },
          {
            "average": 27644.89542,
            "count": 2756855,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10945.04068,
            "variance": 119793915.6
          },
          {
            "average": 1,
            "count": 2756855,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2756855,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5005265057,
            "count": 2756855,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998135,
            "variance": 0.2499998135
          },
          {
            "average": 0.000449062428,
            "count": 2756855,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02118633838,
            "variance": 0.0004488609338
          },
          {
            "average": 1.479997679,
            "count": 2756855,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.435283342,
            "variance": 2.060038273
          },
          {
            "average": 0.2164203059,
            "count": 2756855,
            "maximum": 16.29599953,
            "minimum": -15.9119997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.52803435,
            "variance": 110.8395074
          },
          {
            "average": 0.4988205763,
            "count": 2756855,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999986996,
            "variance": 0.2499986996
          },
          {
            "average": 413.0255458,
            "count": 2756855,
            "maximum": 415,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9431571678,
            "variance": 0.8895454432
          },
          {
            "average": 220418985.8,
            "count": 2756855,
            "maximum": 220420002.9,
            "minimum": 220417827.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 511.4593491,
            "variance": 261590.6658
          },
          {
            "average": 0.4988205763,
            "count": 2756855,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999986996,
            "variance": 0.2499986996
          },
          {
            "average": 0,
            "count": 2756855,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2756855,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2756855,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2435260469,
            "count": 2756855,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4292099465,
            "variance": 0.1842211782
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94907.54301,
          2370479.62,
          3.591597692,
          -94411.52301,
          2370953.3,
          4.251597692
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94907.54300659393,
                2370479.6196448565,
                3.591597691923206
              ],
              [
                -94907.54300659393,
                2370953.2996448562,
                3.591597691923206
              ],
              [
                -94411.52300659394,
                2370953.2996448562,
                4.251597691923206
              ],
              [
                -94411.52300659394,
                2370479.6196448565,
                4.251597691923206
              ],
              [
                -94907.54300659393,
                2370479.6196448565,
                3.591597691923206
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:33:22+00:00",
        "end_time": "2018-09-08T04:57:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2278.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2278.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2278.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2278.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5891961,
            71.31587446,
            3.591597692,
            -156.5751768,
            71.32040083,
            4.251597692
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.58869263143416,
                  71.31587446209366,
                  3.591597691923206
                ],
                [
                  -156.58919609652017,
                  71.3202236396859,
                  3.591597691923206
                ],
                [
                  -156.5756776538481,
                  71.32040082916177,
                  4.251597691923206
                ],
                [
                  -156.57517681211542,
                  71.31605161190593,
                  4.251597691923206
                ],
                [
                  -156.58869263143416,
                  71.31587446209366,
                  3.591597691923206
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2278.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2278.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:33:22Z",
            "pc:count": 2756855,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94665.83558,
                "count": 2756855,
                "maximum": -94411.52301,
                "minimum": -94907.54301,
                "name": "X",
                "position": 0,
                "stddev": 139.5324835,
                "variance": 19469.31395
              },
              {
                "average": 2370712.864,
                "count": 2756855,
                "maximum": 2370953.3,
                "minimum": 2370479.62,
                "name": "Y",
                "position": 1,
                "stddev": 128.8256164,
                "variance": 16596.03944
              },
              {
                "average": 3.841130649,
                "count": 2756855,
                "maximum": 4.251597692,
                "minimum": 3.591597692,
                "name": "Z",
                "position": 2,
                "stddev": 0.05571006111,
                "variance": 0.003103610909
              },
              {
                "average": 27644.89542,
                "count": 2756855,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10945.04068,
                "variance": 119793915.6
              },
              {
                "average": 1,
                "count": 2756855,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2756855,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5005265057,
                "count": 2756855,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998135,
                "variance": 0.2499998135
              },
              {
                "average": 0.000449062428,
                "count": 2756855,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02118633838,
                "variance": 0.0004488609338
              },
              {
                "average": 1.479997679,
                "count": 2756855,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.435283342,
                "variance": 2.060038273
              },
              {
                "average": 0.2164203059,
                "count": 2756855,
                "maximum": 16.29599953,
                "minimum": -15.9119997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.52803435,
                "variance": 110.8395074
              },
              {
                "average": 0.4988205763,
                "count": 2756855,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999986996,
                "variance": 0.2499986996
              },
              {
                "average": 413.0255458,
                "count": 2756855,
                "maximum": 415,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9431571678,
                "variance": 0.8895454432
              },
              {
                "average": 220418985.8,
                "count": 2756855,
                "maximum": 220420002.9,
                "minimum": 220417827.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 511.4593491,
                "variance": 261590.6658
              },
              {
                "average": 0.4988205763,
                "count": 2756855,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999986996,
                "variance": 0.2499986996
              },
              {
                "average": 0,
                "count": 2756855,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2756855,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2756855,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2435260469,
                "count": 2756855,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4292099465,
                "variance": 0.1842211782
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94907.54301,
              2370479.62,
              3.591597692,
              -94411.52301,
              2370953.3,
              4.251597692
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94907.54300659393,
                    2370479.6196448565,
                    3.591597691923206
                  ],
                  [
                    -94907.54300659393,
                    2370953.2996448562,
                    3.591597691923206
                  ],
                  [
                    -94411.52300659394,
                    2370953.2996448562,
                    4.251597691923206
                  ],
                  [
                    -94411.52300659394,
                    2370479.6196448565,
                    4.251597691923206
                  ],
                  [
                    -94907.54300659393,
                    2370479.6196448565,
                    3.591597691923206
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:33:22+00:00",
            "end_time": "2018-09-08T04:57:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2430.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.46916871628937,
              71.37246732361069,
              0.770430588791644
            ],
            [
              -156.4696346103335,
              71.37667793297257,
              0.770430588791644
            ],
            [
              -156.4560739486676,
              71.37684707505704,
              35.31043058879165
            ],
            [
              -156.45561060814987,
              71.37263642891908,
              35.31043058879165
            ],
            [
              -156.46916871628937,
              71.37246732361069,
              0.770430588791644
            ]
          ]
        ]
      },
      "bbox": [
        -156.4696346,
        71.37246732,
        0.7704305888,
        -156.4556106,
        71.37684708,
        35.31043059
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:11Z",
        "pc:count": 1515372,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90076.30033,
            "count": 1515372,
            "maximum": -89802.40593,
            "minimum": -90298.68593,
            "name": "X",
            "position": 0,
            "stddev": 127.368857,
            "variance": 16222.82572
          },
          {
            "average": 2376715.525,
            "count": 1515372,
            "maximum": 2376924.769,
            "minimum": 2376466.389,
            "name": "Y",
            "position": 1,
            "stddev": 120.2119858,
            "variance": 14450.92154
          },
          {
            "average": 1.112324243,
            "count": 1515372,
            "maximum": 35.31043059,
            "minimum": 0.7704305888,
            "name": "Z",
            "position": 2,
            "stddev": 0.09187502514,
            "variance": 0.008441020245
          },
          {
            "average": 14792.28074,
            "count": 1515372,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11069.9372,
            "variance": 122543509.7
          },
          {
            "average": 1.00000066,
            "count": 1515372,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008123447364,
            "variance": 6.599039708e-07
          },
          {
            "average": 1.00000132,
            "count": 1515372,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001148828564,
            "variance": 1.319807071e-06
          },
          {
            "average": 0.5025558081,
            "count": 1515372,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999936328,
            "variance": 0.2499936328
          },
          {
            "average": 0.0005206642329,
            "count": 1515372,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0228121346,
            "variance": 0.0005203934851
          },
          {
            "average": 7.213200455,
            "count": 1515372,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.903972806,
            "variance": 8.433058059
          },
          {
            "average": -0.4057735132,
            "count": 1515372,
            "maximum": 16.48800087,
            "minimum": -15.98999977,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.237832033,
            "variance": 67.8618766
          },
          {
            "average": 0.4813728906,
            "count": 1515372,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996530752,
            "variance": 0.2496531955
          },
          {
            "average": 408.0432521,
            "count": 1515372,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7128243534,
            "variance": 0.5081185588
          },
          {
            "average": 220416196.2,
            "count": 1515372,
            "maximum": 220417471.5,
            "minimum": 220415211.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 430.9765002,
            "variance": 185740.7438
          },
          {
            "average": 0.4813728906,
            "count": 1515372,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996530752,
            "variance": 0.2496531955
          },
          {
            "average": 0,
            "count": 1515372,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1515372,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1515372,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08850500075,
            "count": 1515372,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2840280247,
            "variance": 0.08067191883
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90298.68593,
          2376466.389,
          0.7704305888,
          -89802.40593,
          2376924.769,
          35.31043059
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90298.68592806898,
                2376466.3892414668,
                0.770430588791644
              ],
              [
                -90298.68592806898,
                2376924.7692414667,
                0.770430588791644
              ],
              [
                -89802.40592806898,
                2376924.7692414667,
                35.31043058879165
              ],
              [
                -89802.40592806898,
                2376466.3892414668,
                35.31043058879165
              ],
              [
                -90298.68592806898,
                2376466.3892414668,
                0.770430588791644
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:11+00:00",
        "end_time": "2018-09-08T04:13:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2430.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2430.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2430.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2430.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4696346,
            71.37246732,
            0.7704305888,
            -156.4556106,
            71.37684708,
            35.31043059
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.46916871628937,
                  71.37246732361069,
                  0.770430588791644
                ],
                [
                  -156.4696346103335,
                  71.37667793297257,
                  0.770430588791644
                ],
                [
                  -156.4560739486676,
                  71.37684707505704,
                  35.31043058879165
                ],
                [
                  -156.45561060814987,
                  71.37263642891908,
                  35.31043058879165
                ],
                [
                  -156.46916871628937,
                  71.37246732361069,
                  0.770430588791644
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2430.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2430.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:11Z",
            "pc:count": 1515372,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90076.30033,
                "count": 1515372,
                "maximum": -89802.40593,
                "minimum": -90298.68593,
                "name": "X",
                "position": 0,
                "stddev": 127.368857,
                "variance": 16222.82572
              },
              {
                "average": 2376715.525,
                "count": 1515372,
                "maximum": 2376924.769,
                "minimum": 2376466.389,
                "name": "Y",
                "position": 1,
                "stddev": 120.2119858,
                "variance": 14450.92154
              },
              {
                "average": 1.112324243,
                "count": 1515372,
                "maximum": 35.31043059,
                "minimum": 0.7704305888,
                "name": "Z",
                "position": 2,
                "stddev": 0.09187502514,
                "variance": 0.008441020245
              },
              {
                "average": 14792.28074,
                "count": 1515372,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11069.9372,
                "variance": 122543509.7
              },
              {
                "average": 1.00000066,
                "count": 1515372,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008123447364,
                "variance": 6.599039708e-07
              },
              {
                "average": 1.00000132,
                "count": 1515372,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001148828564,
                "variance": 1.319807071e-06
              },
              {
                "average": 0.5025558081,
                "count": 1515372,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999936328,
                "variance": 0.2499936328
              },
              {
                "average": 0.0005206642329,
                "count": 1515372,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0228121346,
                "variance": 0.0005203934851
              },
              {
                "average": 7.213200455,
                "count": 1515372,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.903972806,
                "variance": 8.433058059
              },
              {
                "average": -0.4057735132,
                "count": 1515372,
                "maximum": 16.48800087,
                "minimum": -15.98999977,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.237832033,
                "variance": 67.8618766
              },
              {
                "average": 0.4813728906,
                "count": 1515372,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996530752,
                "variance": 0.2496531955
              },
              {
                "average": 408.0432521,
                "count": 1515372,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7128243534,
                "variance": 0.5081185588
              },
              {
                "average": 220416196.2,
                "count": 1515372,
                "maximum": 220417471.5,
                "minimum": 220415211.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 430.9765002,
                "variance": 185740.7438
              },
              {
                "average": 0.4813728906,
                "count": 1515372,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996530752,
                "variance": 0.2496531955
              },
              {
                "average": 0,
                "count": 1515372,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1515372,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1515372,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08850500075,
                "count": 1515372,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2840280247,
                "variance": 0.08067191883
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90298.68593,
              2376466.389,
              0.7704305888,
              -89802.40593,
              2376924.769,
              35.31043059
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90298.68592806898,
                    2376466.3892414668,
                    0.770430588791644
                  ],
                  [
                    -90298.68592806898,
                    2376924.7692414667,
                    0.770430588791644
                  ],
                  [
                    -89802.40592806898,
                    2376924.7692414667,
                    35.31043058879165
                  ],
                  [
                    -89802.40592806898,
                    2376466.3892414668,
                    35.31043058879165
                  ],
                  [
                    -90298.68592806898,
                    2376466.3892414668,
                    0.770430588791644
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:11+00:00",
            "end_time": "2018-09-08T04:13:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2312.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.69010181009833,
              71.32890369783,
              0.852766880493494
            ],
            [
              -156.69060720865986,
              71.3331027776049,
              0.852766880493494
            ],
            [
              -156.6770845242497,
              71.33328690035984,
              4.172766880493494
            ],
            [
              -156.67658166024543,
              71.32908778076178,
              4.172766880493494
            ],
            [
              -156.69010181009833,
              71.32890369783,
              0.852766880493494
            ]
          ]
        ]
      },
      "bbox": [
        -156.6906072,
        71.3289037,
        0.8527668805,
        -156.6765817,
        71.3332869,
        4.17276688
      ],
      "properties": {
        "datetime": "2018-09-08T04:01:09Z",
        "pc:count": 1720762,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98297.10727,
            "count": 1720762,
            "maximum": -98070.10597,
            "minimum": -98566.02597,
            "name": "X",
            "position": 0,
            "stddev": 126.8258104,
            "variance": 16084.78619
          },
          {
            "average": 2372256.746,
            "count": 1720762,
            "maximum": 2372501.464,
            "minimum": 2372044.144,
            "name": "Y",
            "position": 1,
            "stddev": 118.3387706,
            "variance": 14004.06462
          },
          {
            "average": 1.148461625,
            "count": 1720762,
            "maximum": 4.17276688,
            "minimum": 0.8527668805,
            "name": "Z",
            "position": 2,
            "stddev": 0.07812728896,
            "variance": 0.00610387328
          },
          {
            "average": 14338.68826,
            "count": 1720762,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10213.97202,
            "variance": 104325224.5
          },
          {
            "average": 1,
            "count": 1720762,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1720762,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4914200802,
            "count": 1720762,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999265248,
            "variance": 0.2499265302
          },
          {
            "average": 0.0005596357893,
            "count": 1720762,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02365000892,
            "variance": 0.0005593229221
          },
          {
            "average": 7.660090704,
            "count": 1720762,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.501912467,
            "variance": 6.25956599
          },
          {
            "average": 3.795090222,
            "count": 1720762,
            "maximum": 16.24200058,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.422787761,
            "variance": 41.25220263
          },
          {
            "average": 0.4861224272,
            "count": 1720762,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998075211,
            "variance": 0.2498075581
          },
          {
            "average": 403.5808218,
            "count": 1720762,
            "maximum": 405,
            "minimum": 402,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6502881326,
            "variance": 0.4228746553
          },
          {
            "average": 220413686.2,
            "count": 1720762,
            "maximum": 220414469.2,
            "minimum": 220412829.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 363.2513284,
            "variance": 131951.5276
          },
          {
            "average": 0.4861224272,
            "count": 1720762,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998075211,
            "variance": 0.2498075581
          },
          {
            "average": 0,
            "count": 1720762,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1720762,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1720762,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04312391836,
            "count": 1720762,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2031360874,
            "variance": 0.04126427
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -98566.02597,
          2372044.144,
          0.8527668805,
          -98070.10597,
          2372501.464,
          4.17276688
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -98566.02597095883,
                2372044.144047783,
                0.852766880493494
              ],
              [
                -98566.02597095883,
                2372501.4640477835,
                0.852766880493494
              ],
              [
                -98070.10597095882,
                2372501.4640477835,
                4.172766880493494
              ],
              [
                -98070.10597095882,
                2372044.144047783,
                4.172766880493494
              ],
              [
                -98566.02597095883,
                2372044.144047783,
                0.852766880493494
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:01:09+00:00",
        "end_time": "2018-09-08T03:33:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2312.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2312.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2312.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2312.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6906072,
            71.3289037,
            0.8527668805,
            -156.6765817,
            71.3332869,
            4.17276688
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.69010181009833,
                  71.32890369783,
                  0.852766880493494
                ],
                [
                  -156.69060720865986,
                  71.3331027776049,
                  0.852766880493494
                ],
                [
                  -156.6770845242497,
                  71.33328690035984,
                  4.172766880493494
                ],
                [
                  -156.67658166024543,
                  71.32908778076178,
                  4.172766880493494
                ],
                [
                  -156.69010181009833,
                  71.32890369783,
                  0.852766880493494
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2312.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2312.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:01:09Z",
            "pc:count": 1720762,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98297.10727,
                "count": 1720762,
                "maximum": -98070.10597,
                "minimum": -98566.02597,
                "name": "X",
                "position": 0,
                "stddev": 126.8258104,
                "variance": 16084.78619
              },
              {
                "average": 2372256.746,
                "count": 1720762,
                "maximum": 2372501.464,
                "minimum": 2372044.144,
                "name": "Y",
                "position": 1,
                "stddev": 118.3387706,
                "variance": 14004.06462
              },
              {
                "average": 1.148461625,
                "count": 1720762,
                "maximum": 4.17276688,
                "minimum": 0.8527668805,
                "name": "Z",
                "position": 2,
                "stddev": 0.07812728896,
                "variance": 0.00610387328
              },
              {
                "average": 14338.68826,
                "count": 1720762,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10213.97202,
                "variance": 104325224.5
              },
              {
                "average": 1,
                "count": 1720762,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1720762,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4914200802,
                "count": 1720762,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999265248,
                "variance": 0.2499265302
              },
              {
                "average": 0.0005596357893,
                "count": 1720762,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02365000892,
                "variance": 0.0005593229221
              },
              {
                "average": 7.660090704,
                "count": 1720762,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.501912467,
                "variance": 6.25956599
              },
              {
                "average": 3.795090222,
                "count": 1720762,
                "maximum": 16.24200058,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.422787761,
                "variance": 41.25220263
              },
              {
                "average": 0.4861224272,
                "count": 1720762,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998075211,
                "variance": 0.2498075581
              },
              {
                "average": 403.5808218,
                "count": 1720762,
                "maximum": 405,
                "minimum": 402,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6502881326,
                "variance": 0.4228746553
              },
              {
                "average": 220413686.2,
                "count": 1720762,
                "maximum": 220414469.2,
                "minimum": 220412829.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 363.2513284,
                "variance": 131951.5276
              },
              {
                "average": 0.4861224272,
                "count": 1720762,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998075211,
                "variance": 0.2498075581
              },
              {
                "average": 0,
                "count": 1720762,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1720762,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1720762,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04312391836,
                "count": 1720762,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2031360874,
                "variance": 0.04126427
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -98566.02597,
              2372044.144,
              0.8527668805,
              -98070.10597,
              2372501.464,
              4.17276688
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -98566.02597095883,
                    2372044.144047783,
                    0.852766880493494
                  ],
                  [
                    -98566.02597095883,
                    2372501.4640477835,
                    0.852766880493494
                  ],
                  [
                    -98070.10597095882,
                    2372501.4640477835,
                    4.172766880493494
                  ],
                  [
                    -98070.10597095882,
                    2372044.144047783,
                    4.172766880493494
                  ],
                  [
                    -98566.02597095883,
                    2372044.144047783,
                    0.852766880493494
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:01:09+00:00",
            "end_time": "2018-09-08T03:33:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2431.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.45599199406476,
              71.3738474524178,
              0.793501056951627
            ],
            [
              -156.4562928779847,
              71.37658137701051,
              0.793501056951627
            ],
            [
              -156.44325134755482,
              71.37674317974874,
              1.453501056951627
            ],
            [
              -156.4429520582677,
              71.37400923231192,
              1.453501056951627
            ],
            [
              -156.45599199406476,
              71.3738474524178,
              0.793501056951627
            ]
          ]
        ]
      },
      "bbox": [
        -156.4562929,
        71.37384745,
        0.793501057,
        -156.4429521,
        71.37674318,
        1.453501057
      ],
      "properties": {
        "datetime": "2018-09-08T04:54:52Z",
        "pc:count": 335178,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89500.18692,
            "count": 335178,
            "maximum": -89334.19589,
            "minimum": -89811.47589,
            "name": "X",
            "position": 0,
            "stddev": 153.3588182,
            "variance": 23518.92711
          },
          {
            "average": 2376798.351,
            "count": 335178,
            "maximum": 2376896.181,
            "minimum": 2376598.561,
            "name": "Y",
            "position": 1,
            "stddev": 64.55711859,
            "variance": 4167.621561
          },
          {
            "average": 1.111132166,
            "count": 335178,
            "maximum": 1.453501057,
            "minimum": 0.793501057,
            "name": "Z",
            "position": 2,
            "stddev": 0.07452623328,
            "variance": 0.005554159447
          },
          {
            "average": 15752.06067,
            "count": 335178,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11921.25908,
            "variance": 142116418.1
          },
          {
            "average": 1,
            "count": 335178,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 335178,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5010233369,
            "count": 335178,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996987,
            "variance": 0.2499996987
          },
          {
            "average": 0.0005638794909,
            "count": 335178,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02373948635,
            "variance": 0.0005635632122
          },
          {
            "average": 7.298903866,
            "count": 335178,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.818503856,
            "variance": 7.943963987
          },
          {
            "average": 0.1219744027,
            "count": 335178,
            "maximum": 16.26600075,
            "minimum": -16.15800095,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.32043931,
            "variance": 69.22971031
          },
          {
            "average": 0.4844381194,
            "count": 335178,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997585147,
            "variance": 0.249758573
          },
          {
            "average": 408.8974455,
            "count": 335178,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7809577768,
            "variance": 0.6098950491
          },
          {
            "average": 220416681.4,
            "count": 335178,
            "maximum": 220417692.4,
            "minimum": 220415427.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 480.4562824,
            "variance": 230838.2393
          },
          {
            "average": 0.4844381194,
            "count": 335178,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997585147,
            "variance": 0.249758573
          },
          {
            "average": 0,
            "count": 335178,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 335178,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 335178,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07841206762,
            "count": 335178,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2688193276,
            "variance": 0.07226383087
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89811.47589,
          2376598.561,
          0.793501057,
          -89334.19589,
          2376896.181,
          1.453501057
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89811.47589369868,
                2376598.56076775,
                0.793501056951627
              ],
              [
                -89811.47589369868,
                2376896.18076775,
                0.793501056951627
              ],
              [
                -89334.19589369868,
                2376896.18076775,
                1.453501056951627
              ],
              [
                -89334.19589369868,
                2376598.56076775,
                1.453501056951627
              ],
              [
                -89811.47589369868,
                2376598.56076775,
                0.793501056951627
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:54:52+00:00",
        "end_time": "2018-09-08T04:17:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2431.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2431.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2431.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2431.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4562929,
            71.37384745,
            0.793501057,
            -156.4429521,
            71.37674318,
            1.453501057
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.45599199406476,
                  71.3738474524178,
                  0.793501056951627
                ],
                [
                  -156.4562928779847,
                  71.37658137701051,
                  0.793501056951627
                ],
                [
                  -156.44325134755482,
                  71.37674317974874,
                  1.453501056951627
                ],
                [
                  -156.4429520582677,
                  71.37400923231192,
                  1.453501056951627
                ],
                [
                  -156.45599199406476,
                  71.3738474524178,
                  0.793501056951627
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2431.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2431.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:54:52Z",
            "pc:count": 335178,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89500.18692,
                "count": 335178,
                "maximum": -89334.19589,
                "minimum": -89811.47589,
                "name": "X",
                "position": 0,
                "stddev": 153.3588182,
                "variance": 23518.92711
              },
              {
                "average": 2376798.351,
                "count": 335178,
                "maximum": 2376896.181,
                "minimum": 2376598.561,
                "name": "Y",
                "position": 1,
                "stddev": 64.55711859,
                "variance": 4167.621561
              },
              {
                "average": 1.111132166,
                "count": 335178,
                "maximum": 1.453501057,
                "minimum": 0.793501057,
                "name": "Z",
                "position": 2,
                "stddev": 0.07452623328,
                "variance": 0.005554159447
              },
              {
                "average": 15752.06067,
                "count": 335178,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11921.25908,
                "variance": 142116418.1
              },
              {
                "average": 1,
                "count": 335178,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 335178,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5010233369,
                "count": 335178,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996987,
                "variance": 0.2499996987
              },
              {
                "average": 0.0005638794909,
                "count": 335178,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02373948635,
                "variance": 0.0005635632122
              },
              {
                "average": 7.298903866,
                "count": 335178,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.818503856,
                "variance": 7.943963987
              },
              {
                "average": 0.1219744027,
                "count": 335178,
                "maximum": 16.26600075,
                "minimum": -16.15800095,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.32043931,
                "variance": 69.22971031
              },
              {
                "average": 0.4844381194,
                "count": 335178,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997585147,
                "variance": 0.249758573
              },
              {
                "average": 408.8974455,
                "count": 335178,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7809577768,
                "variance": 0.6098950491
              },
              {
                "average": 220416681.4,
                "count": 335178,
                "maximum": 220417692.4,
                "minimum": 220415427.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 480.4562824,
                "variance": 230838.2393
              },
              {
                "average": 0.4844381194,
                "count": 335178,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997585147,
                "variance": 0.249758573
              },
              {
                "average": 0,
                "count": 335178,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 335178,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 335178,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07841206762,
                "count": 335178,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2688193276,
                "variance": 0.07226383087
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89811.47589,
              2376598.561,
              0.793501057,
              -89334.19589,
              2376896.181,
              1.453501057
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89811.47589369868,
                    2376598.56076775,
                    0.793501056951627
                  ],
                  [
                    -89811.47589369868,
                    2376896.18076775,
                    0.793501056951627
                  ],
                  [
                    -89334.19589369868,
                    2376896.18076775,
                    1.453501056951627
                  ],
                  [
                    -89334.19589369868,
                    2376598.56076775,
                    1.453501056951627
                  ],
                  [
                    -89811.47589369868,
                    2376598.56076775,
                    0.793501056951627
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:54:52+00:00",
            "end_time": "2018-09-08T04:17:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2401.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.38046962874085,
              71.35929356362799,
              0.924128650284791
            ],
            [
              -156.3809333588236,
              71.3636430686579,
              0.924128650284791
            ],
            [
              -156.36738104489905,
              71.36380609420998,
              3.804128650284791
            ],
            [
              -156.36691994989067,
              71.35945655259255,
              3.804128650284791
            ],
            [
              -156.38046962874085,
              71.35929356362799,
              0.924128650284791
            ]
          ]
        ]
      },
      "bbox": [
        -156.3809334,
        71.35929356,
        0.9241286503,
        -156.3669199,
        71.36380609,
        3.80412865
      ],
      "properties": {
        "datetime": "2018-09-08T06:07:15Z",
        "pc:count": 1851044,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86844.3264,
            "count": 1851044,
            "maximum": -86611.45534,
            "minimum": -87107.69534,
            "name": "X",
            "position": 0,
            "stddev": 133.2959556,
            "variance": 17767.81177
          },
          {
            "average": 2375168.219,
            "count": 1851044,
            "maximum": 2375389.161,
            "minimum": 2374915.641,
            "name": "Y",
            "position": 1,
            "stddev": 124.4245729,
            "variance": 15481.47433
          },
          {
            "average": 1.875103095,
            "count": 1851044,
            "maximum": 3.80412865,
            "minimum": 0.9241286503,
            "name": "Z",
            "position": 2,
            "stddev": 0.9084642985,
            "variance": 0.8253073817
          },
          {
            "average": 19957.62657,
            "count": 1851044,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13314.92289,
            "variance": 177287171.6
          },
          {
            "average": 1,
            "count": 1851044,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1851044,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5008254801,
            "count": 1851044,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999994536,
            "variance": 0.2499994536
          },
          {
            "average": 0.0006180296092,
            "count": 1851044,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02485252467,
            "variance": 0.0006176479823
          },
          {
            "average": 5.024525619,
            "count": 1851044,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.761232791,
            "variance": 14.14687211
          },
          {
            "average": 0.4573431451,
            "count": 1851044,
            "maximum": 16.69199944,
            "minimum": -15.95400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.480384847,
            "variance": 71.91692715
          },
          {
            "average": 0.4995127074,
            "count": 1851044,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999998976,
            "variance": 0.2499998976
          },
          {
            "average": 416.8997706,
            "count": 1851044,
            "maximum": 419,
            "minimum": 415,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7920767024,
            "variance": 0.6273855024
          },
          {
            "average": 220421048.9,
            "count": 1851044,
            "maximum": 220422035.4,
            "minimum": 220419845.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 493.4392428,
            "variance": 243482.2863
          },
          {
            "average": 0.4995127074,
            "count": 1851044,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999998976,
            "variance": 0.2499998976
          },
          {
            "average": 0,
            "count": 1851044,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1851044,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1851044,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1337439845,
            "count": 1851044,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3403771345,
            "variance": 0.1158565937
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87107.69534,
          2374915.641,
          0.9241286503,
          -86611.45534,
          2375389.161,
          3.80412865
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87107.6953354315,
                2374915.6411250196,
                0.924128650284791
              ],
              [
                -87107.6953354315,
                2375389.161125019,
                0.924128650284791
              ],
              [
                -86611.45533543151,
                2375389.161125019,
                3.804128650284791
              ],
              [
                -86611.45533543151,
                2374915.6411250196,
                3.804128650284791
              ],
              [
                -87107.6953354315,
                2374915.6411250196,
                0.924128650284791
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:07:15+00:00",
        "end_time": "2018-09-08T05:30:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2401.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2401.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2401.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2401.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3809334,
            71.35929356,
            0.9241286503,
            -156.3669199,
            71.36380609,
            3.80412865
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.38046962874085,
                  71.35929356362799,
                  0.924128650284791
                ],
                [
                  -156.3809333588236,
                  71.3636430686579,
                  0.924128650284791
                ],
                [
                  -156.36738104489905,
                  71.36380609420998,
                  3.804128650284791
                ],
                [
                  -156.36691994989067,
                  71.35945655259255,
                  3.804128650284791
                ],
                [
                  -156.38046962874085,
                  71.35929356362799,
                  0.924128650284791
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2401.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2401.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:07:15Z",
            "pc:count": 1851044,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86844.3264,
                "count": 1851044,
                "maximum": -86611.45534,
                "minimum": -87107.69534,
                "name": "X",
                "position": 0,
                "stddev": 133.2959556,
                "variance": 17767.81177
              },
              {
                "average": 2375168.219,
                "count": 1851044,
                "maximum": 2375389.161,
                "minimum": 2374915.641,
                "name": "Y",
                "position": 1,
                "stddev": 124.4245729,
                "variance": 15481.47433
              },
              {
                "average": 1.875103095,
                "count": 1851044,
                "maximum": 3.80412865,
                "minimum": 0.9241286503,
                "name": "Z",
                "position": 2,
                "stddev": 0.9084642985,
                "variance": 0.8253073817
              },
              {
                "average": 19957.62657,
                "count": 1851044,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13314.92289,
                "variance": 177287171.6
              },
              {
                "average": 1,
                "count": 1851044,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1851044,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5008254801,
                "count": 1851044,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999994536,
                "variance": 0.2499994536
              },
              {
                "average": 0.0006180296092,
                "count": 1851044,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02485252467,
                "variance": 0.0006176479823
              },
              {
                "average": 5.024525619,
                "count": 1851044,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.761232791,
                "variance": 14.14687211
              },
              {
                "average": 0.4573431451,
                "count": 1851044,
                "maximum": 16.69199944,
                "minimum": -15.95400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.480384847,
                "variance": 71.91692715
              },
              {
                "average": 0.4995127074,
                "count": 1851044,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999998976,
                "variance": 0.2499998976
              },
              {
                "average": 416.8997706,
                "count": 1851044,
                "maximum": 419,
                "minimum": 415,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7920767024,
                "variance": 0.6273855024
              },
              {
                "average": 220421048.9,
                "count": 1851044,
                "maximum": 220422035.4,
                "minimum": 220419845.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 493.4392428,
                "variance": 243482.2863
              },
              {
                "average": 0.4995127074,
                "count": 1851044,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999998976,
                "variance": 0.2499998976
              },
              {
                "average": 0,
                "count": 1851044,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1851044,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1851044,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1337439845,
                "count": 1851044,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3403771345,
                "variance": 0.1158565937
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87107.69534,
              2374915.641,
              0.9241286503,
              -86611.45534,
              2375389.161,
              3.80412865
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87107.6953354315,
                    2374915.6411250196,
                    0.924128650284791
                  ],
                  [
                    -87107.6953354315,
                    2375389.161125019,
                    0.924128650284791
                  ],
                  [
                    -86611.45533543151,
                    2375389.161125019,
                    3.804128650284791
                  ],
                  [
                    -86611.45533543151,
                    2374915.6411250196,
                    3.804128650284791
                  ],
                  [
                    -87107.6953354315,
                    2374915.6411250196,
                    0.924128650284791
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:07:15+00:00",
            "end_time": "2018-09-08T05:30:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2237.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.70426191649236,
              71.30850817739629,
              1.28450477848736
            ],
            [
              -156.70478740650455,
              71.31285463264494,
              1.28450477848736
            ],
            [
              -156.69127816212512,
              71.31303968777351,
              60.70450477848736
            ],
            [
              -156.6907552909462,
              71.30869319114409,
              60.70450477848736
            ],
            [
              -156.70426191649236,
              71.30850817739629,
              1.28450477848736
            ]
          ]
        ]
      },
      "bbox": [
        -156.7047874,
        71.30850818,
        1.284504778,
        -156.6907553,
        71.31303969,
        60.70450478
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:37Z",
        "pc:count": 1764714,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -98966.68746,
            "count": 1764714,
            "maximum": -98679.04839,
            "minimum": -99174.92839,
            "name": "X",
            "position": 0,
            "stddev": 140.9721938,
            "variance": 19873.15944
          },
          {
            "average": 2370060.466,
            "count": 1764714,
            "maximum": 2370320.865,
            "minimum": 2369847.425,
            "name": "Y",
            "position": 1,
            "stddev": 126.0191453,
            "variance": 15880.82497
          },
          {
            "average": 2.494228065,
            "count": 1764714,
            "maximum": 60.70450478,
            "minimum": 1.284504778,
            "name": "Z",
            "position": 2,
            "stddev": 1.162114218,
            "variance": 1.350509456
          },
          {
            "average": 28721.57642,
            "count": 1764714,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 17290.40788,
            "variance": 298958204.6
          },
          {
            "average": 1.001571926,
            "count": 1764714,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03978763609,
            "variance": 0.001583055985
          },
          {
            "average": 1.003149519,
            "count": 1764714,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05639504403,
            "variance": 0.003180400991
          },
          {
            "average": 0.4984581071,
            "count": 1764714,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999977642,
            "variance": 0.2499977642
          },
          {
            "average": 0.0005411641773,
            "count": 1764714,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0232566469,
            "variance": 0.0005408716251
          },
          {
            "average": 5.443418594,
            "count": 1764714,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.723645009,
            "variance": 13.86553216
          },
          {
            "average": 1.094666512,
            "count": 1764714,
            "maximum": 16.2840004,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.44090126,
            "variance": 71.24881407
          },
          {
            "average": 0.4952530552,
            "count": 1764714,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999776077,
            "variance": 0.2499776082
          },
          {
            "average": 407.0655908,
            "count": 1764714,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.760399804,
            "variance": 0.578207862
          },
          {
            "average": 220415639.5,
            "count": 1764714,
            "maximum": 220416777.1,
            "minimum": 220414494.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 426.1644649,
            "variance": 181616.1512
          },
          {
            "average": 0.4952530552,
            "count": 1764714,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999776077,
            "variance": 0.2499776082
          },
          {
            "average": 0,
            "count": 1764714,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1764714,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1764714,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1020114307,
            "count": 1764714,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.302663428,
            "variance": 0.09160515065
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -99174.92839,
          2369847.425,
          1.284504778,
          -98679.04839,
          2370320.865,
          60.70450478
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -99174.92839019465,
                2369847.4250359866,
                1.28450477848736
              ],
              [
                -99174.92839019465,
                2370320.865035987,
                1.28450477848736
              ],
              [
                -98679.04839019464,
                2370320.865035987,
                60.70450477848736
              ],
              [
                -98679.04839019464,
                2369847.4250359866,
                60.70450477848736
              ],
              [
                -99174.92839019465,
                2369847.4250359866,
                1.28450477848736
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:37+00:00",
        "end_time": "2018-09-08T04:01:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2237.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2237.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2237.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2237.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.7047874,
            71.30850818,
            1.284504778,
            -156.6907553,
            71.31303969,
            60.70450478
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.70426191649236,
                  71.30850817739629,
                  1.28450477848736
                ],
                [
                  -156.70478740650455,
                  71.31285463264494,
                  1.28450477848736
                ],
                [
                  -156.69127816212512,
                  71.31303968777351,
                  60.70450477848736
                ],
                [
                  -156.6907552909462,
                  71.30869319114409,
                  60.70450477848736
                ],
                [
                  -156.70426191649236,
                  71.30850817739629,
                  1.28450477848736
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2237.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2237.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:37Z",
            "pc:count": 1764714,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -98966.68746,
                "count": 1764714,
                "maximum": -98679.04839,
                "minimum": -99174.92839,
                "name": "X",
                "position": 0,
                "stddev": 140.9721938,
                "variance": 19873.15944
              },
              {
                "average": 2370060.466,
                "count": 1764714,
                "maximum": 2370320.865,
                "minimum": 2369847.425,
                "name": "Y",
                "position": 1,
                "stddev": 126.0191453,
                "variance": 15880.82497
              },
              {
                "average": 2.494228065,
                "count": 1764714,
                "maximum": 60.70450478,
                "minimum": 1.284504778,
                "name": "Z",
                "position": 2,
                "stddev": 1.162114218,
                "variance": 1.350509456
              },
              {
                "average": 28721.57642,
                "count": 1764714,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 17290.40788,
                "variance": 298958204.6
              },
              {
                "average": 1.001571926,
                "count": 1764714,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03978763609,
                "variance": 0.001583055985
              },
              {
                "average": 1.003149519,
                "count": 1764714,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05639504403,
                "variance": 0.003180400991
              },
              {
                "average": 0.4984581071,
                "count": 1764714,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999977642,
                "variance": 0.2499977642
              },
              {
                "average": 0.0005411641773,
                "count": 1764714,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0232566469,
                "variance": 0.0005408716251
              },
              {
                "average": 5.443418594,
                "count": 1764714,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.723645009,
                "variance": 13.86553216
              },
              {
                "average": 1.094666512,
                "count": 1764714,
                "maximum": 16.2840004,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.44090126,
                "variance": 71.24881407
              },
              {
                "average": 0.4952530552,
                "count": 1764714,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999776077,
                "variance": 0.2499776082
              },
              {
                "average": 407.0655908,
                "count": 1764714,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.760399804,
                "variance": 0.578207862
              },
              {
                "average": 220415639.5,
                "count": 1764714,
                "maximum": 220416777.1,
                "minimum": 220414494.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 426.1644649,
                "variance": 181616.1512
              },
              {
                "average": 0.4952530552,
                "count": 1764714,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999776077,
                "variance": 0.2499776082
              },
              {
                "average": 0,
                "count": 1764714,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1764714,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1764714,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1020114307,
                "count": 1764714,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.302663428,
                "variance": 0.09160515065
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -99174.92839,
              2369847.425,
              1.284504778,
              -98679.04839,
              2370320.865,
              60.70450478
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -99174.92839019465,
                    2369847.4250359866,
                    1.28450477848736
                  ],
                  [
                    -99174.92839019465,
                    2370320.865035987,
                    1.28450477848736
                  ],
                  [
                    -98679.04839019464,
                    2370320.865035987,
                    60.70450477848736
                  ],
                  [
                    -98679.04839019464,
                    2369847.4250359866,
                    60.70450477848736
                  ],
                  [
                    -99174.92839019465,
                    2369847.4250359866,
                    1.28450477848736
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:37+00:00",
            "end_time": "2018-09-08T04:01:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2257.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.6656534820365,
              71.31233593198213,
              2.977020646196592
            ],
            [
              -156.66617169369982,
              71.31668370395506,
              2.977020646196592
            ],
            [
              -156.65265873141124,
              71.3168661312205,
              13.517020646196592
            ],
            [
              -156.6521431405988,
              71.31251831843304,
              13.517020646196592
            ],
            [
              -156.6656534820365,
              71.31233593198213,
              2.977020646196592
            ]
          ]
        ]
      },
      "bbox": [
        -156.6661717,
        71.31233593,
        2.977020646,
        -156.6521431,
        71.31686613,
        13.51702065
      ],
      "properties": {
        "datetime": "2018-09-08T04:57:51Z",
        "pc:count": 3218817,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97493.42483,
            "count": 3218817,
            "maximum": -97247.1483,
            "minimum": -97743.0683,
            "name": "X",
            "position": 0,
            "stddev": 135.4525697,
            "variance": 18347.39864
          },
          {
            "average": 2370446.477,
            "count": 3218817,
            "maximum": 2370680,
            "minimum": 2370206.44,
            "name": "Y",
            "position": 1,
            "stddev": 127.8223485,
            "variance": 16338.55277
          },
          {
            "average": 4.230292855,
            "count": 3218817,
            "maximum": 13.51702065,
            "minimum": 2.977020646,
            "name": "Z",
            "position": 2,
            "stddev": 0.4177653892,
            "variance": 0.1745279204
          },
          {
            "average": 40812.42148,
            "count": 3218817,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10013.49044,
            "variance": 100269990.7
          },
          {
            "average": 1.000818002,
            "count": 3218817,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02926565128,
            "variance": 0.0008564783447
          },
          {
            "average": 1.001641597,
            "count": 3218817,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04190867513,
            "variance": 0.001756337051
          },
          {
            "average": 0.5015466863,
            "count": 3218817,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999976854,
            "variance": 0.2499976854
          },
          {
            "average": 0.0004231368232,
            "count": 3218817,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02056594053,
            "variance": 0.0004229579099
          },
          {
            "average": 1.298218258,
            "count": 3218817,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4672557029,
            "variance": 0.2183278919
          },
          {
            "average": 1.285930049,
            "count": 3218817,
            "maximum": 16.34399986,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.54284413,
            "variance": 111.1515624
          },
          {
            "average": 0.5250867011,
            "count": 3218817,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993703384,
            "variance": 0.2493707349
          },
          {
            "average": 408.8000999,
            "count": 3218817,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9611130895,
            "variance": 0.9237383709
          },
          {
            "average": 220416628.4,
            "count": 3218817,
            "maximum": 220417871.4,
            "minimum": 220415598.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 546.6701131,
            "variance": 298848.2125
          },
          {
            "average": 0.5250867011,
            "count": 3218817,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993703384,
            "variance": 0.2493707349
          },
          {
            "average": 0,
            "count": 3218817,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3218817,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3218817,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2595055885,
            "count": 3218817,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4383634311,
            "variance": 0.1921624978
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97743.0683,
          2370206.44,
          2.977020646,
          -97247.1483,
          2370680,
          13.51702065
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97743.06830009975,
                2370206.4402363426,
                2.977020646196592
              ],
              [
                -97743.06830009975,
                2370680.000236342,
                2.977020646196592
              ],
              [
                -97247.14830009974,
                2370680.000236342,
                13.517020646196592
              ],
              [
                -97247.14830009974,
                2370206.4402363426,
                13.517020646196592
              ],
              [
                -97743.06830009975,
                2370206.4402363426,
                2.977020646196592
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:57:51+00:00",
        "end_time": "2018-09-08T04:19:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2257.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2257.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2257.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2257.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6661717,
            71.31233593,
            2.977020646,
            -156.6521431,
            71.31686613,
            13.51702065
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.6656534820365,
                  71.31233593198213,
                  2.977020646196592
                ],
                [
                  -156.66617169369982,
                  71.31668370395506,
                  2.977020646196592
                ],
                [
                  -156.65265873141124,
                  71.3168661312205,
                  13.517020646196592
                ],
                [
                  -156.6521431405988,
                  71.31251831843304,
                  13.517020646196592
                ],
                [
                  -156.6656534820365,
                  71.31233593198213,
                  2.977020646196592
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2257.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2257.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:57:51Z",
            "pc:count": 3218817,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97493.42483,
                "count": 3218817,
                "maximum": -97247.1483,
                "minimum": -97743.0683,
                "name": "X",
                "position": 0,
                "stddev": 135.4525697,
                "variance": 18347.39864
              },
              {
                "average": 2370446.477,
                "count": 3218817,
                "maximum": 2370680,
                "minimum": 2370206.44,
                "name": "Y",
                "position": 1,
                "stddev": 127.8223485,
                "variance": 16338.55277
              },
              {
                "average": 4.230292855,
                "count": 3218817,
                "maximum": 13.51702065,
                "minimum": 2.977020646,
                "name": "Z",
                "position": 2,
                "stddev": 0.4177653892,
                "variance": 0.1745279204
              },
              {
                "average": 40812.42148,
                "count": 3218817,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10013.49044,
                "variance": 100269990.7
              },
              {
                "average": 1.000818002,
                "count": 3218817,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02926565128,
                "variance": 0.0008564783447
              },
              {
                "average": 1.001641597,
                "count": 3218817,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04190867513,
                "variance": 0.001756337051
              },
              {
                "average": 0.5015466863,
                "count": 3218817,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999976854,
                "variance": 0.2499976854
              },
              {
                "average": 0.0004231368232,
                "count": 3218817,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02056594053,
                "variance": 0.0004229579099
              },
              {
                "average": 1.298218258,
                "count": 3218817,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4672557029,
                "variance": 0.2183278919
              },
              {
                "average": 1.285930049,
                "count": 3218817,
                "maximum": 16.34399986,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.54284413,
                "variance": 111.1515624
              },
              {
                "average": 0.5250867011,
                "count": 3218817,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993703384,
                "variance": 0.2493707349
              },
              {
                "average": 408.8000999,
                "count": 3218817,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9611130895,
                "variance": 0.9237383709
              },
              {
                "average": 220416628.4,
                "count": 3218817,
                "maximum": 220417871.4,
                "minimum": 220415598.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 546.6701131,
                "variance": 298848.2125
              },
              {
                "average": 0.5250867011,
                "count": 3218817,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993703384,
                "variance": 0.2493707349
              },
              {
                "average": 0,
                "count": 3218817,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3218817,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3218817,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2595055885,
                "count": 3218817,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4383634311,
                "variance": 0.1921624978
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97743.0683,
              2370206.44,
              2.977020646,
              -97247.1483,
              2370680,
              13.51702065
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97743.06830009975,
                    2370206.4402363426,
                    2.977020646196592
                  ],
                  [
                    -97743.06830009975,
                    2370680.000236342,
                    2.977020646196592
                  ],
                  [
                    -97247.14830009974,
                    2370680.000236342,
                    13.517020646196592
                  ],
                  [
                    -97247.14830009974,
                    2370206.4402363426,
                    13.517020646196592
                  ],
                  [
                    -97743.06830009975,
                    2370206.4402363426,
                    2.977020646196592
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:57:51+00:00",
            "end_time": "2018-09-08T04:19:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2432.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.44321330590907,
              71.37212720699337,
              0.756406691647625
            ],
            [
              -156.44368912464188,
              71.3764732704935,
              0.756406691647625
            ],
            [
              -156.4304355248608,
              71.37663685110812,
              1.576406691647625
            ],
            [
              -156.42996228215856,
              71.37229075089769,
              1.576406691647625
            ],
            [
              -156.44321330590907,
              71.37212720699337,
              0.756406691647625
            ]
          ]
        ]
      },
      "bbox": [
        -156.4436891,
        71.37212721,
        0.7564066916,
        -156.4299623,
        71.37663685,
        1.576406692
      ],
      "properties": {
        "datetime": "2018-09-08T05:09:56Z",
        "pc:count": 1589478,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89098.72122,
            "count": 1589478,
            "maximum": -88866.23559,
            "minimum": -89351.27559,
            "name": "X",
            "position": 0,
            "stddev": 128.7013002,
            "variance": 16564.02468
          },
          {
            "average": 2376647.234,
            "count": 1589478,
            "maximum": 2376867.427,
            "minimum": 2376394.307,
            "name": "Y",
            "position": 1,
            "stddev": 124.2530189,
            "variance": 15438.81271
          },
          {
            "average": 1.12961767,
            "count": 1589478,
            "maximum": 1.576406692,
            "minimum": 0.7564066916,
            "name": "Z",
            "position": 2,
            "stddev": 0.07317466092,
            "variance": 0.005354531001
          },
          {
            "average": 16732.02092,
            "count": 1589478,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12225.20084,
            "variance": 149455535.6
          },
          {
            "average": 1,
            "count": 1589478,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1589478,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4968819952,
            "count": 1589478,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999904352,
            "variance": 0.2499904353
          },
          {
            "average": 0.0005806937875,
            "count": 1589478,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02409059873,
            "variance": 0.0005803569474
          },
          {
            "average": 7.351622357,
            "count": 1589478,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.72731096,
            "variance": 7.438225071
          },
          {
            "average": 1.486764142,
            "count": 1589478,
            "maximum": 16.31999969,
            "minimum": -16.17000008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.39920272,
            "variance": 54.7482009
          },
          {
            "average": 0.4783746614,
            "count": 1589478,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499532283,
            "variance": 0.2495325017
          },
          {
            "average": 409.827992,
            "count": 1589478,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6898949011,
            "variance": 0.4759549745
          },
          {
            "average": 220417229.5,
            "count": 1589478,
            "maximum": 220418596.7,
            "minimum": 220416342.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 458.7206063,
            "variance": 210424.5946
          },
          {
            "average": 0.4783746614,
            "count": 1589478,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499532283,
            "variance": 0.2495325017
          },
          {
            "average": 0,
            "count": 1589478,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1589478,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1589478,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05735530784,
            "count": 1589478,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2325203443,
            "variance": 0.05406571052
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89351.27559,
          2376394.307,
          0.7564066916,
          -88866.23559,
          2376867.427,
          1.576406692
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89351.27558806537,
                2376394.307142488,
                0.756406691647625
              ],
              [
                -89351.27558806537,
                2376867.4271424883,
                0.756406691647625
              ],
              [
                -88866.23558806536,
                2376867.4271424883,
                1.576406691647625
              ],
              [
                -88866.23558806536,
                2376394.307142488,
                1.576406691647625
              ],
              [
                -89351.27558806537,
                2376394.307142488,
                0.756406691647625
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:09:56+00:00",
        "end_time": "2018-09-08T04:32:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2432.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2432.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2432.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2432.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4436891,
            71.37212721,
            0.7564066916,
            -156.4299623,
            71.37663685,
            1.576406692
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.44321330590907,
                  71.37212720699337,
                  0.756406691647625
                ],
                [
                  -156.44368912464188,
                  71.3764732704935,
                  0.756406691647625
                ],
                [
                  -156.4304355248608,
                  71.37663685110812,
                  1.576406691647625
                ],
                [
                  -156.42996228215856,
                  71.37229075089769,
                  1.576406691647625
                ],
                [
                  -156.44321330590907,
                  71.37212720699337,
                  0.756406691647625
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2432.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2432.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:09:56Z",
            "pc:count": 1589478,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89098.72122,
                "count": 1589478,
                "maximum": -88866.23559,
                "minimum": -89351.27559,
                "name": "X",
                "position": 0,
                "stddev": 128.7013002,
                "variance": 16564.02468
              },
              {
                "average": 2376647.234,
                "count": 1589478,
                "maximum": 2376867.427,
                "minimum": 2376394.307,
                "name": "Y",
                "position": 1,
                "stddev": 124.2530189,
                "variance": 15438.81271
              },
              {
                "average": 1.12961767,
                "count": 1589478,
                "maximum": 1.576406692,
                "minimum": 0.7564066916,
                "name": "Z",
                "position": 2,
                "stddev": 0.07317466092,
                "variance": 0.005354531001
              },
              {
                "average": 16732.02092,
                "count": 1589478,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12225.20084,
                "variance": 149455535.6
              },
              {
                "average": 1,
                "count": 1589478,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1589478,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4968819952,
                "count": 1589478,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999904352,
                "variance": 0.2499904353
              },
              {
                "average": 0.0005806937875,
                "count": 1589478,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02409059873,
                "variance": 0.0005803569474
              },
              {
                "average": 7.351622357,
                "count": 1589478,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.72731096,
                "variance": 7.438225071
              },
              {
                "average": 1.486764142,
                "count": 1589478,
                "maximum": 16.31999969,
                "minimum": -16.17000008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.39920272,
                "variance": 54.7482009
              },
              {
                "average": 0.4783746614,
                "count": 1589478,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499532283,
                "variance": 0.2495325017
              },
              {
                "average": 409.827992,
                "count": 1589478,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6898949011,
                "variance": 0.4759549745
              },
              {
                "average": 220417229.5,
                "count": 1589478,
                "maximum": 220418596.7,
                "minimum": 220416342.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 458.7206063,
                "variance": 210424.5946
              },
              {
                "average": 0.4783746614,
                "count": 1589478,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499532283,
                "variance": 0.2495325017
              },
              {
                "average": 0,
                "count": 1589478,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1589478,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1589478,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05735530784,
                "count": 1589478,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2325203443,
                "variance": 0.05406571052
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89351.27559,
              2376394.307,
              0.7564066916,
              -88866.23559,
              2376867.427,
              1.576406692
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89351.27558806537,
                    2376394.307142488,
                    0.756406691647625
                  ],
                  [
                    -89351.27558806537,
                    2376867.4271424883,
                    0.756406691647625
                  ],
                  [
                    -88866.23558806536,
                    2376867.4271424883,
                    1.576406691647625
                  ],
                  [
                    -88866.23558806536,
                    2376394.307142488,
                    1.576406691647625
                  ],
                  [
                    -89351.27558806537,
                    2376394.307142488,
                    0.756406691647625
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:09:56+00:00",
            "end_time": "2018-09-08T04:32:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2287.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.66509021621633,
              71.32053045048183,
              1.337649460490457
            ],
            [
              -156.66560848634404,
              71.32487828201837,
              1.337649460490457
            ],
            [
              -156.65209165959226,
              71.32506066597004,
              21.217649460490456
            ],
            [
              -156.651576011917,
              71.32071279360879,
              21.217649460490456
            ],
            [
              -156.66509021621633,
              71.32053045048183,
              1.337649460490457
            ]
          ]
        ]
      },
      "bbox": [
        -156.6656085,
        71.32053045,
        1.33764946,
        -156.651576,
        71.32506067,
        21.21764946
      ],
      "properties": {
        "datetime": "2018-09-08T04:39:03Z",
        "pc:count": 2600407,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -97454.08171,
            "count": 2600407,
            "maximum": -97190.76656,
            "minimum": -97686.64656,
            "name": "X",
            "position": 0,
            "stddev": 136.8877585,
            "variance": 18738.25843
          },
          {
            "average": 2371310.855,
            "count": 2600407,
            "maximum": 2371570.251,
            "minimum": 2371096.711,
            "name": "Y",
            "position": 1,
            "stddev": 122.3180964,
            "variance": 14961.71671
          },
          {
            "average": 2.303574933,
            "count": 2600407,
            "maximum": 21.21764946,
            "minimum": 1.33764946,
            "name": "Z",
            "position": 2,
            "stddev": 0.6603620372,
            "variance": 0.4360780202
          },
          {
            "average": 36988.76562,
            "count": 2600407,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 14162.71568,
            "variance": 200582515.4
          },
          {
            "average": 1.001474769,
            "count": 2600407,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03915807078,
            "variance": 0.001533354507
          },
          {
            "average": 1.002940309,
            "count": 2600407,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05578893866,
            "variance": 0.003112405677
          },
          {
            "average": 0.5026420864,
            "count": 2600407,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999931155,
            "variance": 0.2499931155
          },
          {
            "average": 0.0004922306393,
            "count": 2600407,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02218081463,
            "variance": 0.0004919885375
          },
          {
            "average": 2.251346039,
            "count": 2600407,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.515674425,
            "variance": 6.32861781
          },
          {
            "average": -0.8339492548,
            "count": 2600407,
            "maximum": 16.33200073,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.032616,
            "variance": 100.6533839
          },
          {
            "average": 0.4885731349,
            "count": 2600407,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998695058,
            "variance": 0.2498695228
          },
          {
            "average": 406.9269999,
            "count": 2600407,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9040359448,
            "variance": 0.8172809895
          },
          {
            "average": 220415567.1,
            "count": 2600407,
            "maximum": 220416743.2,
            "minimum": 220414460.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 509.0338846,
            "variance": 259115.4956
          },
          {
            "average": 0.4885731349,
            "count": 2600407,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998695058,
            "variance": 0.2498695228
          },
          {
            "average": 0,
            "count": 2600407,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2600407,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2600407,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2184058111,
            "count": 2600407,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.413164348,
            "variance": 0.1707047784
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -97686.64656,
          2371096.711,
          1.33764946,
          -97190.76656,
          2371570.251,
          21.21764946
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -97686.64656436178,
                2371096.710860682,
                1.337649460490457
              ],
              [
                -97686.64656436178,
                2371570.250860682,
                1.337649460490457
              ],
              [
                -97190.76656436178,
                2371570.250860682,
                21.217649460490456
              ],
              [
                -97190.76656436178,
                2371096.710860682,
                21.217649460490456
              ],
              [
                -97686.64656436178,
                2371096.710860682,
                1.337649460490457
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:39:03+00:00",
        "end_time": "2018-09-08T04:01:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2287.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2287.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2287.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2287.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6656085,
            71.32053045,
            1.33764946,
            -156.651576,
            71.32506067,
            21.21764946
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.66509021621633,
                  71.32053045048183,
                  1.337649460490457
                ],
                [
                  -156.66560848634404,
                  71.32487828201837,
                  1.337649460490457
                ],
                [
                  -156.65209165959226,
                  71.32506066597004,
                  21.217649460490456
                ],
                [
                  -156.651576011917,
                  71.32071279360879,
                  21.217649460490456
                ],
                [
                  -156.66509021621633,
                  71.32053045048183,
                  1.337649460490457
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2287.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2287.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:39:03Z",
            "pc:count": 2600407,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -97454.08171,
                "count": 2600407,
                "maximum": -97190.76656,
                "minimum": -97686.64656,
                "name": "X",
                "position": 0,
                "stddev": 136.8877585,
                "variance": 18738.25843
              },
              {
                "average": 2371310.855,
                "count": 2600407,
                "maximum": 2371570.251,
                "minimum": 2371096.711,
                "name": "Y",
                "position": 1,
                "stddev": 122.3180964,
                "variance": 14961.71671
              },
              {
                "average": 2.303574933,
                "count": 2600407,
                "maximum": 21.21764946,
                "minimum": 1.33764946,
                "name": "Z",
                "position": 2,
                "stddev": 0.6603620372,
                "variance": 0.4360780202
              },
              {
                "average": 36988.76562,
                "count": 2600407,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 14162.71568,
                "variance": 200582515.4
              },
              {
                "average": 1.001474769,
                "count": 2600407,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03915807078,
                "variance": 0.001533354507
              },
              {
                "average": 1.002940309,
                "count": 2600407,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05578893866,
                "variance": 0.003112405677
              },
              {
                "average": 0.5026420864,
                "count": 2600407,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999931155,
                "variance": 0.2499931155
              },
              {
                "average": 0.0004922306393,
                "count": 2600407,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02218081463,
                "variance": 0.0004919885375
              },
              {
                "average": 2.251346039,
                "count": 2600407,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.515674425,
                "variance": 6.32861781
              },
              {
                "average": -0.8339492548,
                "count": 2600407,
                "maximum": 16.33200073,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.032616,
                "variance": 100.6533839
              },
              {
                "average": 0.4885731349,
                "count": 2600407,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998695058,
                "variance": 0.2498695228
              },
              {
                "average": 406.9269999,
                "count": 2600407,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9040359448,
                "variance": 0.8172809895
              },
              {
                "average": 220415567.1,
                "count": 2600407,
                "maximum": 220416743.2,
                "minimum": 220414460.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 509.0338846,
                "variance": 259115.4956
              },
              {
                "average": 0.4885731349,
                "count": 2600407,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998695058,
                "variance": 0.2498695228
              },
              {
                "average": 0,
                "count": 2600407,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2600407,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2600407,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2184058111,
                "count": 2600407,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.413164348,
                "variance": 0.1707047784
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -97686.64656,
              2371096.711,
              1.33764946,
              -97190.76656,
              2371570.251,
              21.21764946
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -97686.64656436178,
                    2371096.710860682,
                    1.337649460490457
                  ],
                  [
                    -97686.64656436178,
                    2371570.250860682,
                    1.337649460490457
                  ],
                  [
                    -97190.76656436178,
                    2371570.250860682,
                    21.217649460490456
                  ],
                  [
                    -97190.76656436178,
                    2371096.710860682,
                    21.217649460490456
                  ],
                  [
                    -97686.64656436178,
                    2371096.710860682,
                    1.337649460490457
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:39:03+00:00",
            "end_time": "2018-09-08T04:01:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2402.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.36766807230458,
              71.3591838214527,
              0.893766158115191
            ],
            [
              -156.36812911251053,
              71.3635315160762,
              0.893766158115191
            ],
            [
              -156.35456967267035,
              71.36369374736063,
              10.713766158115192
            ],
            [
              -156.35411126785218,
              71.35934601634325,
              10.713766158115192
            ],
            [
              -156.36766807230458,
              71.3591838214527,
              0.893766158115191
            ]
          ]
        ]
      },
      "bbox": [
        -156.3681291,
        71.35918382,
        0.8937661581,
        -156.3541113,
        71.36369375,
        10.71376616
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:18Z",
        "pc:count": 2292217,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -86402.20897,
            "count": 2292217,
            "maximum": -86143.37705,
            "minimum": -86639.87705,
            "name": "X",
            "position": 0,
            "stddev": 130.3164078,
            "variance": 16982.36613
          },
          {
            "average": 2375100.286,
            "count": 2292217,
            "maximum": 2375360.283,
            "minimum": 2374886.963,
            "name": "Y",
            "position": 1,
            "stddev": 126.5130194,
            "variance": 16005.54407
          },
          {
            "average": 1.828922363,
            "count": 2292217,
            "maximum": 10.71376616,
            "minimum": 0.8937661581,
            "name": "Z",
            "position": 2,
            "stddev": 0.944348604,
            "variance": 0.8917942858
          },
          {
            "average": 16823.8666,
            "count": 2292217,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10445.72224,
            "variance": 109113113
          },
          {
            "average": 1.000005235,
            "count": 2292217,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00228803001,
            "variance": 5.235081327e-06
          },
          {
            "average": 1.00001047,
            "count": 2292217,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003235754601,
            "variance": 1.047010784e-05
          },
          {
            "average": 0.4965537731,
            "count": 2292217,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999882324,
            "variance": 0.2499882326
          },
          {
            "average": 0.0005392159643,
            "count": 2292217,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02321476783,
            "variance": 0.0005389254455
          },
          {
            "average": 5.084297865,
            "count": 2292217,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.722594269,
            "variance": 13.85770809
          },
          {
            "average": 1.181763182,
            "count": 2292217,
            "maximum": 16.36199951,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.653203138,
            "variance": 74.87792455
          },
          {
            "average": 0.4823518018,
            "count": 2292217,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499688553,
            "variance": 0.24968865
          },
          {
            "average": 417.8313563,
            "count": 2292217,
            "maximum": 420,
            "minimum": 416,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7744232197,
            "variance": 0.5997313232
          },
          {
            "average": 220421556.4,
            "count": 2292217,
            "maximum": 220422998.1,
            "minimum": 220420783,
            "name": "GpsTime",
            "position": 12,
            "stddev": 494.1723425,
            "variance": 244206.304
          },
          {
            "average": 0.4823518018,
            "count": 2292217,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499688553,
            "variance": 0.24968865
          },
          {
            "average": 0,
            "count": 2292217,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2292217,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2292217,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1094490618,
            "count": 2292217,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3122018692,
            "variance": 0.09747000716
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86639.87705,
          2374886.963,
          0.8937661581,
          -86143.37705,
          2375360.283,
          10.71376616
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86639.87705418516,
                2374886.9628817756,
                0.893766158115191
              ],
              [
                -86639.87705418516,
                2375360.282881776,
                0.893766158115191
              ],
              [
                -86143.37705418516,
                2375360.282881776,
                10.713766158115192
              ],
              [
                -86143.37705418516,
                2374886.9628817756,
                10.713766158115192
              ],
              [
                -86639.87705418516,
                2374886.9628817756,
                0.893766158115191
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:18+00:00",
        "end_time": "2018-09-08T05:46:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2402.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2402.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2402.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2402.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3681291,
            71.35918382,
            0.8937661581,
            -156.3541113,
            71.36369375,
            10.71376616
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.36766807230458,
                  71.3591838214527,
                  0.893766158115191
                ],
                [
                  -156.36812911251053,
                  71.3635315160762,
                  0.893766158115191
                ],
                [
                  -156.35456967267035,
                  71.36369374736063,
                  10.713766158115192
                ],
                [
                  -156.35411126785218,
                  71.35934601634325,
                  10.713766158115192
                ],
                [
                  -156.36766807230458,
                  71.3591838214527,
                  0.893766158115191
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2402.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2402.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:18Z",
            "pc:count": 2292217,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -86402.20897,
                "count": 2292217,
                "maximum": -86143.37705,
                "minimum": -86639.87705,
                "name": "X",
                "position": 0,
                "stddev": 130.3164078,
                "variance": 16982.36613
              },
              {
                "average": 2375100.286,
                "count": 2292217,
                "maximum": 2375360.283,
                "minimum": 2374886.963,
                "name": "Y",
                "position": 1,
                "stddev": 126.5130194,
                "variance": 16005.54407
              },
              {
                "average": 1.828922363,
                "count": 2292217,
                "maximum": 10.71376616,
                "minimum": 0.8937661581,
                "name": "Z",
                "position": 2,
                "stddev": 0.944348604,
                "variance": 0.8917942858
              },
              {
                "average": 16823.8666,
                "count": 2292217,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10445.72224,
                "variance": 109113113
              },
              {
                "average": 1.000005235,
                "count": 2292217,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00228803001,
                "variance": 5.235081327e-06
              },
              {
                "average": 1.00001047,
                "count": 2292217,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003235754601,
                "variance": 1.047010784e-05
              },
              {
                "average": 0.4965537731,
                "count": 2292217,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999882324,
                "variance": 0.2499882326
              },
              {
                "average": 0.0005392159643,
                "count": 2292217,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02321476783,
                "variance": 0.0005389254455
              },
              {
                "average": 5.084297865,
                "count": 2292217,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.722594269,
                "variance": 13.85770809
              },
              {
                "average": 1.181763182,
                "count": 2292217,
                "maximum": 16.36199951,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.653203138,
                "variance": 74.87792455
              },
              {
                "average": 0.4823518018,
                "count": 2292217,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499688553,
                "variance": 0.24968865
              },
              {
                "average": 417.8313563,
                "count": 2292217,
                "maximum": 420,
                "minimum": 416,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7744232197,
                "variance": 0.5997313232
              },
              {
                "average": 220421556.4,
                "count": 2292217,
                "maximum": 220422998.1,
                "minimum": 220420783,
                "name": "GpsTime",
                "position": 12,
                "stddev": 494.1723425,
                "variance": 244206.304
              },
              {
                "average": 0.4823518018,
                "count": 2292217,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499688553,
                "variance": 0.24968865
              },
              {
                "average": 0,
                "count": 2292217,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2292217,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2292217,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1094490618,
                "count": 2292217,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3122018692,
                "variance": 0.09747000716
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86639.87705,
              2374886.963,
              0.8937661581,
              -86143.37705,
              2375360.283,
              10.71376616
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86639.87705418516,
                    2374886.9628817756,
                    0.893766158115191
                  ],
                  [
                    -86639.87705418516,
                    2375360.282881776,
                    0.893766158115191
                  ],
                  [
                    -86143.37705418516,
                    2375360.282881776,
                    10.713766158115192
                  ],
                  [
                    -86143.37705418516,
                    2374886.9628817756,
                    10.713766158115192
                  ],
                  [
                    -86639.87705418516,
                    2374886.9628817756,
                    0.893766158115191
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:18+00:00",
            "end_time": "2018-09-08T05:46:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2306.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.60087945662073,
              71.3241634582675,
              3.129458827387089
            ],
            [
              -156.60138539265583,
              71.32851211481939,
              3.129458827387089
            ],
            [
              -156.5878631274206,
              71.32869013575248,
              5.089458827387089
            ],
            [
              -156.58735981595325,
              71.32434143933656,
              5.089458827387089
            ],
            [
              -156.60087945662073,
              71.3241634582675,
              3.129458827387089
            ]
          ]
        ]
      },
      "bbox": [
        -156.6013854,
        71.32416346,
        3.129458827,
        -156.5873598,
        71.32869014,
        5.089458827
      ],
      "properties": {
        "datetime": "2018-09-08T05:07:48Z",
        "pc:count": 3205952,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -95065.31445,
            "count": 3205952,
            "maximum": -94822.81333,
            "minimum": -95318.79333,
            "name": "X",
            "position": 0,
            "stddev": 134.5137185,
            "variance": 18093.94047
          },
          {
            "average": 2371640.045,
            "count": 3205952,
            "maximum": 2371872.063,
            "minimum": 2371398.463,
            "name": "Y",
            "position": 1,
            "stddev": 129.3815044,
            "variance": 16739.57369
          },
          {
            "average": 4.17811498,
            "count": 3205952,
            "maximum": 5.089458827,
            "minimum": 3.129458827,
            "name": "Z",
            "position": 2,
            "stddev": 0.2878470564,
            "variance": 0.08285592786
          },
          {
            "average": 37993.51595,
            "count": 3205952,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11802.78765,
            "variance": 139305796.4
          },
          {
            "average": 1,
            "count": 3205952,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3205952,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5018116304,
            "count": 3205952,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499996796,
            "variance": 0.249996796
          },
          {
            "average": 0.000398009702,
            "count": 3205952,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01994621303,
            "variance": 0.0003978514143
          },
          {
            "average": 1.282454634,
            "count": 3205952,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4502453388,
            "variance": 0.2027208651
          },
          {
            "average": 1.62608285,
            "count": 3205952,
            "maximum": 16.57799911,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.58432745,
            "variance": 112.0279876
          },
          {
            "average": 0.5380601456,
            "count": 3205952,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4985493986,
            "variance": 0.2485515028
          },
          {
            "average": 410.3129576,
            "count": 3205952,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.9927872287,
            "variance": 0.9856264814
          },
          {
            "average": 220417476.7,
            "count": 3205952,
            "maximum": 220418468.7,
            "minimum": 220416699,
            "name": "GpsTime",
            "position": 12,
            "stddev": 566.5481123,
            "variance": 320976.7635
          },
          {
            "average": 0.5380601456,
            "count": 3205952,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4985493986,
            "variance": 0.2485515028
          },
          {
            "average": 0,
            "count": 3205952,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3205952,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3205952,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2676147366,
            "count": 3205952,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4427156542,
            "variance": 0.1959971505
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -95318.79333,
          2371398.463,
          3.129458827,
          -94822.81333,
          2371872.063,
          5.089458827
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -95318.79332734134,
                2371398.4627309004,
                3.129458827387089
              ],
              [
                -95318.79332734134,
                2371872.0627309,
                3.129458827387089
              ],
              [
                -94822.81332734133,
                2371872.0627309,
                5.089458827387089
              ],
              [
                -94822.81332734133,
                2371398.4627309004,
                5.089458827387089
              ],
              [
                -95318.79332734134,
                2371398.4627309004,
                3.129458827387089
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:07:48+00:00",
        "end_time": "2018-09-08T04:38:19+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2306.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2306.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2306.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2306.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.6013854,
            71.32416346,
            3.129458827,
            -156.5873598,
            71.32869014,
            5.089458827
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.60087945662073,
                  71.3241634582675,
                  3.129458827387089
                ],
                [
                  -156.60138539265583,
                  71.32851211481939,
                  3.129458827387089
                ],
                [
                  -156.5878631274206,
                  71.32869013575248,
                  5.089458827387089
                ],
                [
                  -156.58735981595325,
                  71.32434143933656,
                  5.089458827387089
                ],
                [
                  -156.60087945662073,
                  71.3241634582675,
                  3.129458827387089
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2306.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2306.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:07:48Z",
            "pc:count": 3205952,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -95065.31445,
                "count": 3205952,
                "maximum": -94822.81333,
                "minimum": -95318.79333,
                "name": "X",
                "position": 0,
                "stddev": 134.5137185,
                "variance": 18093.94047
              },
              {
                "average": 2371640.045,
                "count": 3205952,
                "maximum": 2371872.063,
                "minimum": 2371398.463,
                "name": "Y",
                "position": 1,
                "stddev": 129.3815044,
                "variance": 16739.57369
              },
              {
                "average": 4.17811498,
                "count": 3205952,
                "maximum": 5.089458827,
                "minimum": 3.129458827,
                "name": "Z",
                "position": 2,
                "stddev": 0.2878470564,
                "variance": 0.08285592786
              },
              {
                "average": 37993.51595,
                "count": 3205952,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11802.78765,
                "variance": 139305796.4
              },
              {
                "average": 1,
                "count": 3205952,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3205952,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5018116304,
                "count": 3205952,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499996796,
                "variance": 0.249996796
              },
              {
                "average": 0.000398009702,
                "count": 3205952,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01994621303,
                "variance": 0.0003978514143
              },
              {
                "average": 1.282454634,
                "count": 3205952,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4502453388,
                "variance": 0.2027208651
              },
              {
                "average": 1.62608285,
                "count": 3205952,
                "maximum": 16.57799911,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.58432745,
                "variance": 112.0279876
              },
              {
                "average": 0.5380601456,
                "count": 3205952,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4985493986,
                "variance": 0.2485515028
              },
              {
                "average": 410.3129576,
                "count": 3205952,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.9927872287,
                "variance": 0.9856264814
              },
              {
                "average": 220417476.7,
                "count": 3205952,
                "maximum": 220418468.7,
                "minimum": 220416699,
                "name": "GpsTime",
                "position": 12,
                "stddev": 566.5481123,
                "variance": 320976.7635
              },
              {
                "average": 0.5380601456,
                "count": 3205952,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4985493986,
                "variance": 0.2485515028
              },
              {
                "average": 0,
                "count": 3205952,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3205952,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3205952,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2676147366,
                "count": 3205952,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4427156542,
                "variance": 0.1959971505
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -95318.79333,
              2371398.463,
              3.129458827,
              -94822.81333,
              2371872.063,
              5.089458827
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -95318.79332734134,
                    2371398.4627309004,
                    3.129458827387089
                  ],
                  [
                    -95318.79332734134,
                    2371872.0627309,
                    3.129458827387089
                  ],
                  [
                    -94822.81332734133,
                    2371872.0627309,
                    5.089458827387089
                  ],
                  [
                    -94822.81332734133,
                    2371398.4627309004,
                    5.089458827387089
                  ],
                  [
                    -95318.79332734134,
                    2371398.4627309004,
                    3.129458827387089
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:07:48+00:00",
            "end_time": "2018-09-08T04:38:19+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2453.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.46817655473885,
              71.38461903272662,
              0.812816654682633
            ],
            [
              -156.46865782731433,
              71.38896834820643,
              0.812816654682633
            ],
            [
              -156.45515311791192,
              71.389136648965,
              20.712816654682634
            ],
            [
              -156.45467447331058,
              71.3847872956599,
              20.712816654682634
            ],
            [
              -156.46817655473885,
              71.38461903272662,
              0.812816654682633
            ]
          ]
        ]
      },
      "bbox": [
        -156.4686578,
        71.38461903,
        0.8128166547,
        -156.4546745,
        71.38913665,
        20.71281665
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:03Z",
        "pc:count": 2233315,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89970.55302,
            "count": 2233315,
            "maximum": -89719.34069,
            "minimum": -90213.30069,
            "name": "X",
            "position": 0,
            "stddev": 131.9401713,
            "variance": 17408.20881
          },
          {
            "average": 2378001.57,
            "count": 2233315,
            "maximum": 2378259.49,
            "minimum": 2377786.05,
            "name": "Y",
            "position": 1,
            "stddev": 130.8008496,
            "variance": 17108.86225
          },
          {
            "average": 1.968796349,
            "count": 2233315,
            "maximum": 20.71281665,
            "minimum": 0.8128166547,
            "name": "Z",
            "position": 2,
            "stddev": 1.255707371,
            "variance": 1.576801001
          },
          {
            "average": 16780.35944,
            "count": 2233315,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9240.08347,
            "variance": 85379142.53
          },
          {
            "average": 1.000013881,
            "count": 2233315,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003725657593,
            "variance": 1.38805245e-05
          },
          {
            "average": 1.000027761,
            "count": 2233315,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005268838929,
            "variance": 2.776066366e-05
          },
          {
            "average": 0.4938645019,
            "count": 2233315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999624662,
            "variance": 0.2499624676
          },
          {
            "average": 0.0004441827508,
            "count": 2233315,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02107096702,
            "variance": 0.0004439856512
          },
          {
            "average": 5.302736963,
            "count": 2233315,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.651209542,
            "variance": 13.33133112
          },
          {
            "average": 2.42329617,
            "count": 2233315,
            "maximum": 16.38599968,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.189295136,
            "variance": 67.06455483
          },
          {
            "average": 0.4724935802,
            "count": 2233315,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992429353,
            "variance": 0.2492435085
          },
          {
            "average": 405.6006322,
            "count": 2233315,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7580798853,
            "variance": 0.5746851125
          },
          {
            "average": 220414813.2,
            "count": 2233315,
            "maximum": 220415423.9,
            "minimum": 220414093.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 503.6166144,
            "variance": 253629.6943
          },
          {
            "average": 0.4724935802,
            "count": 2233315,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992429353,
            "variance": 0.2492435085
          },
          {
            "average": 0,
            "count": 2233315,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2233315,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2233315,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09979111769,
            "count": 2233315,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2997213552,
            "variance": 0.08983289074
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90213.30069,
          2377786.05,
          0.8128166547,
          -89719.34069,
          2378259.49,
          20.71281665
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90213.30068626563,
                2377786.049970342,
                0.812816654682633
              ],
              [
                -90213.30068626563,
                2378259.4899703423,
                0.812816654682633
              ],
              [
                -89719.34068626564,
                2378259.4899703423,
                20.712816654682634
              ],
              [
                -89719.34068626564,
                2377786.049970342,
                20.712816654682634
              ],
              [
                -90213.30068626563,
                2377786.049970342,
                0.812816654682633
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:03+00:00",
        "end_time": "2018-09-08T03:54:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2453.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2453.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2453.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2453.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4686578,
            71.38461903,
            0.8128166547,
            -156.4546745,
            71.38913665,
            20.71281665
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.46817655473885,
                  71.38461903272662,
                  0.812816654682633
                ],
                [
                  -156.46865782731433,
                  71.38896834820643,
                  0.812816654682633
                ],
                [
                  -156.45515311791192,
                  71.389136648965,
                  20.712816654682634
                ],
                [
                  -156.45467447331058,
                  71.3847872956599,
                  20.712816654682634
                ],
                [
                  -156.46817655473885,
                  71.38461903272662,
                  0.812816654682633
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2453.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2453.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:03Z",
            "pc:count": 2233315,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89970.55302,
                "count": 2233315,
                "maximum": -89719.34069,
                "minimum": -90213.30069,
                "name": "X",
                "position": 0,
                "stddev": 131.9401713,
                "variance": 17408.20881
              },
              {
                "average": 2378001.57,
                "count": 2233315,
                "maximum": 2378259.49,
                "minimum": 2377786.05,
                "name": "Y",
                "position": 1,
                "stddev": 130.8008496,
                "variance": 17108.86225
              },
              {
                "average": 1.968796349,
                "count": 2233315,
                "maximum": 20.71281665,
                "minimum": 0.8128166547,
                "name": "Z",
                "position": 2,
                "stddev": 1.255707371,
                "variance": 1.576801001
              },
              {
                "average": 16780.35944,
                "count": 2233315,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9240.08347,
                "variance": 85379142.53
              },
              {
                "average": 1.000013881,
                "count": 2233315,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003725657593,
                "variance": 1.38805245e-05
              },
              {
                "average": 1.000027761,
                "count": 2233315,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005268838929,
                "variance": 2.776066366e-05
              },
              {
                "average": 0.4938645019,
                "count": 2233315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999624662,
                "variance": 0.2499624676
              },
              {
                "average": 0.0004441827508,
                "count": 2233315,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02107096702,
                "variance": 0.0004439856512
              },
              {
                "average": 5.302736963,
                "count": 2233315,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.651209542,
                "variance": 13.33133112
              },
              {
                "average": 2.42329617,
                "count": 2233315,
                "maximum": 16.38599968,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.189295136,
                "variance": 67.06455483
              },
              {
                "average": 0.4724935802,
                "count": 2233315,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992429353,
                "variance": 0.2492435085
              },
              {
                "average": 405.6006322,
                "count": 2233315,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7580798853,
                "variance": 0.5746851125
              },
              {
                "average": 220414813.2,
                "count": 2233315,
                "maximum": 220415423.9,
                "minimum": 220414093.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 503.6166144,
                "variance": 253629.6943
              },
              {
                "average": 0.4724935802,
                "count": 2233315,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992429353,
                "variance": 0.2492435085
              },
              {
                "average": 0,
                "count": 2233315,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2233315,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2233315,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09979111769,
                "count": 2233315,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2997213552,
                "variance": 0.08983289074
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90213.30069,
              2377786.05,
              0.8128166547,
              -89719.34069,
              2378259.49,
              20.71281665
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90213.30068626563,
                    2377786.049970342,
                    0.812816654682633
                  ],
                  [
                    -90213.30068626563,
                    2378259.4899703423,
                    0.812816654682633
                  ],
                  [
                    -89719.34068626564,
                    2378259.4899703423,
                    20.712816654682634
                  ],
                  [
                    -89719.34068626564,
                    2377786.049970342,
                    20.712816654682634
                  ],
                  [
                    -90213.30068626563,
                    2377786.049970342,
                    0.812816654682633
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:03+00:00",
            "end_time": "2018-09-08T03:54:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2433.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.43070509928194,
              71.37201592966828,
              0.781248167610568
            ],
            [
              -156.43117870092274,
              71.37636404086425,
              0.781248167610568
            ],
            [
              -156.4176141161449,
              71.37653058956022,
              3.801248167610568
            ],
            [
              -156.41714315224743,
              71.37218244097043,
              3.801248167610568
            ],
            [
              -156.43070509928194,
              71.37201592966828,
              0.781248167610568
            ]
          ]
        ]
      },
      "bbox": [
        -156.4311787,
        71.37201593,
        0.7812481676,
        -156.4171432,
        71.37653059,
        3.801248168
      ],
      "properties": {
        "datetime": "2018-09-08T05:13:06Z",
        "pc:count": 1981397,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88640.28645,
            "count": 1981397,
            "maximum": -88398.06309,
            "minimum": -88894.48309,
            "name": "X",
            "position": 0,
            "stddev": 131.8155724,
            "variance": 17375.34514
          },
          {
            "average": 2376612.728,
            "count": 1981397,
            "maximum": 2376838.764,
            "minimum": 2376365.424,
            "name": "Y",
            "position": 1,
            "stddev": 127.2432316,
            "variance": 16190.84
          },
          {
            "average": 1.44343038,
            "count": 1981397,
            "maximum": 3.801248168,
            "minimum": 0.7812481676,
            "name": "Z",
            "position": 2,
            "stddev": 0.5575620671,
            "variance": 0.3108754587
          },
          {
            "average": 16482.58154,
            "count": 1981397,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10708.88436,
            "variance": 114680204.1
          },
          {
            "average": 1,
            "count": 1981397,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1981397,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5046505067,
            "count": 1981397,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999784985,
            "variance": 0.249978499
          },
          {
            "average": 0.0005894830768,
            "count": 1981397,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02427212154,
            "variance": 0.0005891358839
          },
          {
            "average": 5.918442897,
            "count": 1981397,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.618755886,
            "variance": 13.09539416
          },
          {
            "average": -0.7513384127,
            "count": 1981397,
            "maximum": 16.45199966,
            "minimum": -15.77400017,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.61748087,
            "variance": 74.26097655
          },
          {
            "average": 0.4941569004,
            "count": 1981397,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999659832,
            "variance": 0.2499659843
          },
          {
            "average": 410.6953897,
            "count": 1981397,
            "maximum": 413,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8139913665,
            "variance": 0.6625819448
          },
          {
            "average": 220417684.3,
            "count": 1981397,
            "maximum": 220418786.6,
            "minimum": 220416558.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 480.0677596,
            "variance": 230465.0538
          },
          {
            "average": 0.4941569004,
            "count": 1981397,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999659832,
            "variance": 0.2499659843
          },
          {
            "average": 0,
            "count": 1981397,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1981397,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1981397,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1261508925,
            "count": 1981397,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3320194279,
            "variance": 0.1102369005
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88894.48309,
          2376365.424,
          0.7812481676,
          -88398.06309,
          2376838.764,
          3.801248168
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88894.48308827153,
                2376365.423592083,
                0.781248167610568
              ],
              [
                -88894.48308827153,
                2376838.763592083,
                0.781248167610568
              ],
              [
                -88398.06308827152,
                2376838.763592083,
                3.801248167610568
              ],
              [
                -88398.06308827152,
                2376365.423592083,
                3.801248167610568
              ],
              [
                -88894.48308827153,
                2376365.423592083,
                0.781248167610568
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:13:06+00:00",
        "end_time": "2018-09-08T04:35:58+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2433.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2433.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2433.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2433.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4311787,
            71.37201593,
            0.7812481676,
            -156.4171432,
            71.37653059,
            3.801248168
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.43070509928194,
                  71.37201592966828,
                  0.781248167610568
                ],
                [
                  -156.43117870092274,
                  71.37636404086425,
                  0.781248167610568
                ],
                [
                  -156.4176141161449,
                  71.37653058956022,
                  3.801248167610568
                ],
                [
                  -156.41714315224743,
                  71.37218244097043,
                  3.801248167610568
                ],
                [
                  -156.43070509928194,
                  71.37201592966828,
                  0.781248167610568
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2433.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2433.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:13:06Z",
            "pc:count": 1981397,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88640.28645,
                "count": 1981397,
                "maximum": -88398.06309,
                "minimum": -88894.48309,
                "name": "X",
                "position": 0,
                "stddev": 131.8155724,
                "variance": 17375.34514
              },
              {
                "average": 2376612.728,
                "count": 1981397,
                "maximum": 2376838.764,
                "minimum": 2376365.424,
                "name": "Y",
                "position": 1,
                "stddev": 127.2432316,
                "variance": 16190.84
              },
              {
                "average": 1.44343038,
                "count": 1981397,
                "maximum": 3.801248168,
                "minimum": 0.7812481676,
                "name": "Z",
                "position": 2,
                "stddev": 0.5575620671,
                "variance": 0.3108754587
              },
              {
                "average": 16482.58154,
                "count": 1981397,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10708.88436,
                "variance": 114680204.1
              },
              {
                "average": 1,
                "count": 1981397,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1981397,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5046505067,
                "count": 1981397,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999784985,
                "variance": 0.249978499
              },
              {
                "average": 0.0005894830768,
                "count": 1981397,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02427212154,
                "variance": 0.0005891358839
              },
              {
                "average": 5.918442897,
                "count": 1981397,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.618755886,
                "variance": 13.09539416
              },
              {
                "average": -0.7513384127,
                "count": 1981397,
                "maximum": 16.45199966,
                "minimum": -15.77400017,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.61748087,
                "variance": 74.26097655
              },
              {
                "average": 0.4941569004,
                "count": 1981397,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999659832,
                "variance": 0.2499659843
              },
              {
                "average": 410.6953897,
                "count": 1981397,
                "maximum": 413,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8139913665,
                "variance": 0.6625819448
              },
              {
                "average": 220417684.3,
                "count": 1981397,
                "maximum": 220418786.6,
                "minimum": 220416558.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 480.0677596,
                "variance": 230465.0538
              },
              {
                "average": 0.4941569004,
                "count": 1981397,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999659832,
                "variance": 0.2499659843
              },
              {
                "average": 0,
                "count": 1981397,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1981397,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1981397,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1261508925,
                "count": 1981397,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3320194279,
                "variance": 0.1102369005
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88894.48309,
              2376365.424,
              0.7812481676,
              -88398.06309,
              2376838.764,
              3.801248168
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88894.48308827153,
                    2376365.423592083,
                    0.781248167610568
                  ],
                  [
                    -88894.48308827153,
                    2376838.763592083,
                    0.781248167610568
                  ],
                  [
                    -88398.06308827152,
                    2376838.763592083,
                    3.801248167610568
                  ],
                  [
                    -88398.06308827152,
                    2376365.423592083,
                    3.801248167610568
                  ],
                  [
                    -88894.48308827153,
                    2376365.423592083,
                    0.781248167610568
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:13:06+00:00",
            "end_time": "2018-09-08T04:35:58+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2403.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.3548588559688,
              71.35907765110089,
              0.913846946275725
            ],
            [
              -156.3553169550636,
              71.36342114697051,
              0.913846946275725
            ],
            [
              -156.34202731539918,
              71.36357929657059,
              9.333846946275724
            ],
            [
              -156.34157179678408,
              71.35923576525724,
              9.333846946275724
            ],
            [
              -156.3548588559688,
              71.35907765110089,
              0.913846946275725
            ]
          ]
        ]
      },
      "bbox": [
        -156.355317,
        71.35907765,
        0.9138469463,
        -156.3415718,
        71.3635793,
        9.333846946
      ],
      "properties": {
        "datetime": "2018-09-08T06:23:26Z",
        "pc:count": 1425506,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -85955.7756,
            "count": 1425506,
            "maximum": -85685.13699,
            "minimum": -86171.75699,
            "name": "X",
            "position": 0,
            "stddev": 130.2016941,
            "variance": 16952.48115
          },
          {
            "average": 2375073.23,
            "count": 1425506,
            "maximum": 2375331.613,
            "minimum": 2374858.753,
            "name": "Y",
            "position": 1,
            "stddev": 121.5313484,
            "variance": 14769.86864
          },
          {
            "average": 1.174394015,
            "count": 1425506,
            "maximum": 9.333846946,
            "minimum": 0.9138469463,
            "name": "Z",
            "position": 2,
            "stddev": 0.05698039091,
            "variance": 0.003246764949
          },
          {
            "average": 15672.40155,
            "count": 1425506,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12114.61571,
            "variance": 146763913.9
          },
          {
            "average": 1.000003508,
            "count": 1425506,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001872836514,
            "variance": 3.507516608e-06
          },
          {
            "average": 1.000007015,
            "count": 1425506,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002648586153,
            "variance": 7.015008611e-06
          },
          {
            "average": 0.5066222099,
            "count": 1425506,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999563198,
            "variance": 0.2499563217
          },
          {
            "average": 0.0006769526049,
            "count": 1425506,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02600951393,
            "variance": 0.0006764948146
          },
          {
            "average": 7.848553426,
            "count": 1425506,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.296999418,
            "variance": 5.276206328
          },
          {
            "average": -1.41420981,
            "count": 1425506,
            "maximum": 16.38599968,
            "minimum": -15.82800007,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.392480301,
            "variance": 54.648765
          },
          {
            "average": 0.4836044184,
            "count": 1425506,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997312879,
            "variance": 0.2497313601
          },
          {
            "average": 418.635145,
            "count": 1425506,
            "maximum": 420,
            "minimum": 417,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.759372599,
            "variance": 0.5766467441
          },
          {
            "average": 220422034.6,
            "count": 1425506,
            "maximum": 220423006.5,
            "minimum": 220420918.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 430.2981481,
            "variance": 185156.4962
          },
          {
            "average": 0.4836044184,
            "count": 1425506,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997312879,
            "variance": 0.2497313601
          },
          {
            "average": 0,
            "count": 1425506,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1425506,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1425506,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05541049985,
            "count": 1425506,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2287798354,
            "variance": 0.05234021307
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -86171.75699,
          2374858.753,
          0.9138469463,
          -85685.13699,
          2375331.613,
          9.333846946
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -86171.75699432121,
                2374858.753154914,
                0.913846946275725
              ],
              [
                -86171.75699432121,
                2375331.613154914,
                0.913846946275725
              ],
              [
                -85685.13699432122,
                2375331.613154914,
                9.333846946275724
              ],
              [
                -85685.13699432122,
                2374858.753154914,
                9.333846946275724
              ],
              [
                -86171.75699432121,
                2374858.753154914,
                0.913846946275725
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T06:23:26+00:00",
        "end_time": "2018-09-08T05:48:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2403.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2403.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2403.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2403.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.355317,
            71.35907765,
            0.9138469463,
            -156.3415718,
            71.3635793,
            9.333846946
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.3548588559688,
                  71.35907765110089,
                  0.913846946275725
                ],
                [
                  -156.3553169550636,
                  71.36342114697051,
                  0.913846946275725
                ],
                [
                  -156.34202731539918,
                  71.36357929657059,
                  9.333846946275724
                ],
                [
                  -156.34157179678408,
                  71.35923576525724,
                  9.333846946275724
                ],
                [
                  -156.3548588559688,
                  71.35907765110089,
                  0.913846946275725
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2403.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2403.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T06:23:26Z",
            "pc:count": 1425506,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -85955.7756,
                "count": 1425506,
                "maximum": -85685.13699,
                "minimum": -86171.75699,
                "name": "X",
                "position": 0,
                "stddev": 130.2016941,
                "variance": 16952.48115
              },
              {
                "average": 2375073.23,
                "count": 1425506,
                "maximum": 2375331.613,
                "minimum": 2374858.753,
                "name": "Y",
                "position": 1,
                "stddev": 121.5313484,
                "variance": 14769.86864
              },
              {
                "average": 1.174394015,
                "count": 1425506,
                "maximum": 9.333846946,
                "minimum": 0.9138469463,
                "name": "Z",
                "position": 2,
                "stddev": 0.05698039091,
                "variance": 0.003246764949
              },
              {
                "average": 15672.40155,
                "count": 1425506,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12114.61571,
                "variance": 146763913.9
              },
              {
                "average": 1.000003508,
                "count": 1425506,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001872836514,
                "variance": 3.507516608e-06
              },
              {
                "average": 1.000007015,
                "count": 1425506,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002648586153,
                "variance": 7.015008611e-06
              },
              {
                "average": 0.5066222099,
                "count": 1425506,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999563198,
                "variance": 0.2499563217
              },
              {
                "average": 0.0006769526049,
                "count": 1425506,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02600951393,
                "variance": 0.0006764948146
              },
              {
                "average": 7.848553426,
                "count": 1425506,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.296999418,
                "variance": 5.276206328
              },
              {
                "average": -1.41420981,
                "count": 1425506,
                "maximum": 16.38599968,
                "minimum": -15.82800007,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.392480301,
                "variance": 54.648765
              },
              {
                "average": 0.4836044184,
                "count": 1425506,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997312879,
                "variance": 0.2497313601
              },
              {
                "average": 418.635145,
                "count": 1425506,
                "maximum": 420,
                "minimum": 417,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.759372599,
                "variance": 0.5766467441
              },
              {
                "average": 220422034.6,
                "count": 1425506,
                "maximum": 220423006.5,
                "minimum": 220420918.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 430.2981481,
                "variance": 185156.4962
              },
              {
                "average": 0.4836044184,
                "count": 1425506,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997312879,
                "variance": 0.2497313601
              },
              {
                "average": 0,
                "count": 1425506,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1425506,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1425506,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05541049985,
                "count": 1425506,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2287798354,
                "variance": 0.05234021307
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -86171.75699,
              2374858.753,
              0.9138469463,
              -85685.13699,
              2375331.613,
              9.333846946
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -86171.75699432121,
                    2374858.753154914,
                    0.913846946275725
                  ],
                  [
                    -86171.75699432121,
                    2375331.613154914,
                    0.913846946275725
                  ],
                  [
                    -85685.13699432122,
                    2375331.613154914,
                    9.333846946275724
                  ],
                  [
                    -85685.13699432122,
                    2374858.753154914,
                    9.333846946275724
                  ],
                  [
                    -86171.75699432121,
                    2374858.753154914,
                    0.913846946275725
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T06:23:26+00:00",
            "end_time": "2018-09-08T05:48:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2454.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4553560381131,
              71.38451574322906,
              0.817216696510777
            ],
            [
              -156.45579795273204,
              71.38853031943476,
              0.817216696510777
            ],
            [
              -156.44277841535097,
              71.38869174418925,
              2.557216696510777
            ],
            [
              -156.44233883932674,
              71.38467713449614,
              2.557216696510777
            ],
            [
              -156.4553560381131,
              71.38451574322906,
              0.817216696510777
            ]
          ]
        ]
      },
      "bbox": [
        -156.455798,
        71.38451574,
        0.8172166965,
        -156.4423388,
        71.38869174,
        2.557216697
      ],
      "properties": {
        "datetime": "2018-09-08T04:32:38Z",
        "pc:count": 1196081,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89537.10039,
            "count": 1196081,
            "maximum": -89269.11269,
            "minimum": -89745.33269,
            "name": "X",
            "position": 0,
            "stddev": 130.3923771,
            "variance": 17002.172
          },
          {
            "average": 2377918.098,
            "count": 1196081,
            "maximum": 2378194.451,
            "minimum": 2377757.451,
            "name": "Y",
            "position": 1,
            "stddev": 95.32526866,
            "variance": 9086.906845
          },
          {
            "average": 1.177254746,
            "count": 1196081,
            "maximum": 2.557216697,
            "minimum": 0.8172166965,
            "name": "Z",
            "position": 2,
            "stddev": 0.08427362865,
            "variance": 0.007102044486
          },
          {
            "average": 16233.94184,
            "count": 1196081,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11028.06517,
            "variance": 121618221.4
          },
          {
            "average": 1,
            "count": 1196081,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1196081,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5077707948,
            "count": 1196081,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999398201,
            "variance": 0.2499398237
          },
          {
            "average": 0.0004874251827,
            "count": 1196081,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02207233578,
            "variance": 0.0004871880068
          },
          {
            "average": 7.361259814,
            "count": 1196081,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.763259646,
            "variance": 7.635603872
          },
          {
            "average": -2.358893653,
            "count": 1196081,
            "maximum": 16.31999969,
            "minimum": -15.75599957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.318028783,
            "variance": 53.55354528
          },
          {
            "average": 0.4908739458,
            "count": 1196081,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999169172,
            "variance": 0.2499169241
          },
          {
            "average": 406.4338803,
            "count": 1196081,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7184558841,
            "variance": 0.5161788574
          },
          {
            "average": 220415299.8,
            "count": 1196081,
            "maximum": 220416358.5,
            "minimum": 220414283.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 389.2925726,
            "variance": 151548.7071
          },
          {
            "average": 0.4908739458,
            "count": 1196081,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999169172,
            "variance": 0.2499169241
          },
          {
            "average": 0,
            "count": 1196081,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1196081,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1196081,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07026865237,
            "count": 1196081,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2555993417,
            "variance": 0.06533102349
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89745.33269,
          2377757.451,
          0.8172166965,
          -89269.11269,
          2378194.451,
          2.557216697
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89745.33269488705,
                2377757.4514959836,
                0.817216696510777
              ],
              [
                -89745.33269488705,
                2378194.4514959836,
                0.817216696510777
              ],
              [
                -89269.11269488705,
                2378194.4514959836,
                2.557216696510777
              ],
              [
                -89269.11269488705,
                2377757.4514959836,
                2.557216696510777
              ],
              [
                -89745.33269488705,
                2377757.4514959836,
                0.817216696510777
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:32:38+00:00",
        "end_time": "2018-09-08T03:58:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2454.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2454.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2454.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2454.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.455798,
            71.38451574,
            0.8172166965,
            -156.4423388,
            71.38869174,
            2.557216697
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4553560381131,
                  71.38451574322906,
                  0.817216696510777
                ],
                [
                  -156.45579795273204,
                  71.38853031943476,
                  0.817216696510777
                ],
                [
                  -156.44277841535097,
                  71.38869174418925,
                  2.557216696510777
                ],
                [
                  -156.44233883932674,
                  71.38467713449614,
                  2.557216696510777
                ],
                [
                  -156.4553560381131,
                  71.38451574322906,
                  0.817216696510777
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2454.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2454.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:32:38Z",
            "pc:count": 1196081,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89537.10039,
                "count": 1196081,
                "maximum": -89269.11269,
                "minimum": -89745.33269,
                "name": "X",
                "position": 0,
                "stddev": 130.3923771,
                "variance": 17002.172
              },
              {
                "average": 2377918.098,
                "count": 1196081,
                "maximum": 2378194.451,
                "minimum": 2377757.451,
                "name": "Y",
                "position": 1,
                "stddev": 95.32526866,
                "variance": 9086.906845
              },
              {
                "average": 1.177254746,
                "count": 1196081,
                "maximum": 2.557216697,
                "minimum": 0.8172166965,
                "name": "Z",
                "position": 2,
                "stddev": 0.08427362865,
                "variance": 0.007102044486
              },
              {
                "average": 16233.94184,
                "count": 1196081,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11028.06517,
                "variance": 121618221.4
              },
              {
                "average": 1,
                "count": 1196081,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1196081,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5077707948,
                "count": 1196081,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999398201,
                "variance": 0.2499398237
              },
              {
                "average": 0.0004874251827,
                "count": 1196081,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02207233578,
                "variance": 0.0004871880068
              },
              {
                "average": 7.361259814,
                "count": 1196081,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.763259646,
                "variance": 7.635603872
              },
              {
                "average": -2.358893653,
                "count": 1196081,
                "maximum": 16.31999969,
                "minimum": -15.75599957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.318028783,
                "variance": 53.55354528
              },
              {
                "average": 0.4908739458,
                "count": 1196081,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999169172,
                "variance": 0.2499169241
              },
              {
                "average": 406.4338803,
                "count": 1196081,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7184558841,
                "variance": 0.5161788574
              },
              {
                "average": 220415299.8,
                "count": 1196081,
                "maximum": 220416358.5,
                "minimum": 220414283.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 389.2925726,
                "variance": 151548.7071
              },
              {
                "average": 0.4908739458,
                "count": 1196081,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999169172,
                "variance": 0.2499169241
              },
              {
                "average": 0,
                "count": 1196081,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1196081,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1196081,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07026865237,
                "count": 1196081,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2555993417,
                "variance": 0.06533102349
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89745.33269,
              2377757.451,
              0.8172166965,
              -89269.11269,
              2378194.451,
              2.557216697
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89745.33269488705,
                    2377757.4514959836,
                    0.817216696510777
                  ],
                  [
                    -89745.33269488705,
                    2378194.4514959836,
                    0.817216696510777
                  ],
                  [
                    -89269.11269488705,
                    2378194.4514959836,
                    2.557216696510777
                  ],
                  [
                    -89269.11269488705,
                    2377757.4514959836,
                    2.557216696510777
                  ],
                  [
                    -89745.33269488705,
                    2377757.4514959836,
                    0.817216696510777
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:32:38+00:00",
            "end_time": "2018-09-08T03:58:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2279.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.57591283344323,
              71.3157787699077,
              0.98509312306665
            ],
            [
              -156.5764137698287,
              71.32012760996804,
              0.98509312306665
            ],
            [
              -156.56289637462956,
              71.32030390854764,
              4.425093123066651
            ],
            [
              -156.5623980612203,
              71.3159550290264,
              4.425093123066651
            ],
            [
              -156.57591283344323,
              71.3157787699077,
              0.98509312306665
            ]
          ]
        ]
      },
      "bbox": [
        -156.5764138,
        71.31577877,
        0.9850931231,
        -156.5623981,
        71.32030391,
        4.425093123
      ],
      "properties": {
        "datetime": "2018-09-11T17:33:27Z",
        "pc:count": 3378700,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -94182.07892,
            "count": 3378700,
            "maximum": -93943.66506,
            "minimum": -94439.64506,
            "name": "X",
            "position": 0,
            "stddev": 131.9506256,
            "variance": 17410.96759
          },
          {
            "average": 2370674.688,
            "count": 3378700,
            "maximum": 2370924.635,
            "minimum": 2370450.995,
            "name": "Y",
            "position": 1,
            "stddev": 128.7217165,
            "variance": 16569.2803
          },
          {
            "average": 3.628433357,
            "count": 3378700,
            "maximum": 4.425093123,
            "minimum": 0.9850931231,
            "name": "Z",
            "position": 2,
            "stddev": 0.4244568993,
            "variance": 0.1801636594
          },
          {
            "average": 37570.99982,
            "count": 3378700,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 11489.74258,
            "variance": 132014184.5
          },
          {
            "average": 1.000002072,
            "count": 3378700,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001439374547,
            "variance": 2.071799085e-06
          },
          {
            "average": 1.000004144,
            "count": 3378700,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002035580896,
            "variance": 4.143589586e-06
          },
          {
            "average": 0.5032414834,
            "count": 3378700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999895667,
            "variance": 0.2499895668
          },
          {
            "average": 0.0005102554237,
            "count": 3378700,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02258307362,
            "variance": 0.000509995214
          },
          {
            "average": 1.380037884,
            "count": 3378700,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9707949151,
            "variance": 0.9424427672
          },
          {
            "average": -2.002243087,
            "count": 3378700,
            "maximum": 16.3560009,
            "minimum": -19.6439991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.7187018,
            "variance": 114.8905684
          },
          {
            "average": 0.4822985172,
            "count": 3378700,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996866332,
            "variance": 0.2496867314
          },
          {
            "average": 419.7409927,
            "count": 3378700,
            "maximum": 453,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.80070981,
            "variance": 190.4595913
          },
          {
            "average": 220465028.9,
            "count": 3378700,
            "maximum": 220722407.6,
            "minimum": 220418460.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 108270.5631,
            "variance": 11722514830.0
          },
          {
            "average": 0.4822985172,
            "count": 3378700,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996866332,
            "variance": 0.2496867314
          },
          {
            "average": 0,
            "count": 3378700,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3378700,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3378700,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2299322225,
            "count": 3378700,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4207890777,
            "variance": 0.1770634479
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -94439.64506,
          2370450.995,
          0.9850931231,
          -93943.66506,
          2370924.635,
          4.425093123
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -94439.64505619464,
                2370450.99470438,
                0.98509312306665
              ],
              [
                -94439.64505619464,
                2370924.63470438,
                0.98509312306665
              ],
              [
                -93943.66505619463,
                2370924.63470438,
                4.425093123066651
              ],
              [
                -93943.66505619463,
                2370450.99470438,
                4.425093123066651
              ],
              [
                -94439.64505619464,
                2370450.99470438,
                0.98509312306665
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:33:27+00:00",
        "end_time": "2018-09-08T05:07:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2279.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2279.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2279.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2279.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5764138,
            71.31577877,
            0.9850931231,
            -156.5623981,
            71.32030391,
            4.425093123
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.57591283344323,
                  71.3157787699077,
                  0.98509312306665
                ],
                [
                  -156.5764137698287,
                  71.32012760996804,
                  0.98509312306665
                ],
                [
                  -156.56289637462956,
                  71.32030390854764,
                  4.425093123066651
                ],
                [
                  -156.5623980612203,
                  71.3159550290264,
                  4.425093123066651
                ],
                [
                  -156.57591283344323,
                  71.3157787699077,
                  0.98509312306665
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2279.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2279.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:33:27Z",
            "pc:count": 3378700,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -94182.07892,
                "count": 3378700,
                "maximum": -93943.66506,
                "minimum": -94439.64506,
                "name": "X",
                "position": 0,
                "stddev": 131.9506256,
                "variance": 17410.96759
              },
              {
                "average": 2370674.688,
                "count": 3378700,
                "maximum": 2370924.635,
                "minimum": 2370450.995,
                "name": "Y",
                "position": 1,
                "stddev": 128.7217165,
                "variance": 16569.2803
              },
              {
                "average": 3.628433357,
                "count": 3378700,
                "maximum": 4.425093123,
                "minimum": 0.9850931231,
                "name": "Z",
                "position": 2,
                "stddev": 0.4244568993,
                "variance": 0.1801636594
              },
              {
                "average": 37570.99982,
                "count": 3378700,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 11489.74258,
                "variance": 132014184.5
              },
              {
                "average": 1.000002072,
                "count": 3378700,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001439374547,
                "variance": 2.071799085e-06
              },
              {
                "average": 1.000004144,
                "count": 3378700,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002035580896,
                "variance": 4.143589586e-06
              },
              {
                "average": 0.5032414834,
                "count": 3378700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999895667,
                "variance": 0.2499895668
              },
              {
                "average": 0.0005102554237,
                "count": 3378700,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02258307362,
                "variance": 0.000509995214
              },
              {
                "average": 1.380037884,
                "count": 3378700,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9707949151,
                "variance": 0.9424427672
              },
              {
                "average": -2.002243087,
                "count": 3378700,
                "maximum": 16.3560009,
                "minimum": -19.6439991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.7187018,
                "variance": 114.8905684
              },
              {
                "average": 0.4822985172,
                "count": 3378700,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996866332,
                "variance": 0.2496867314
              },
              {
                "average": 419.7409927,
                "count": 3378700,
                "maximum": 453,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.80070981,
                "variance": 190.4595913
              },
              {
                "average": 220465028.9,
                "count": 3378700,
                "maximum": 220722407.6,
                "minimum": 220418460.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 108270.5631,
                "variance": 11722514830.0
              },
              {
                "average": 0.4822985172,
                "count": 3378700,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996866332,
                "variance": 0.2496867314
              },
              {
                "average": 0,
                "count": 3378700,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3378700,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3378700,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2299322225,
                "count": 3378700,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4207890777,
                "variance": 0.1770634479
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -94439.64506,
              2370450.995,
              0.9850931231,
              -93943.66506,
              2370924.635,
              4.425093123
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -94439.64505619464,
                    2370450.99470438,
                    0.98509312306665
                  ],
                  [
                    -94439.64505619464,
                    2370924.63470438,
                    0.98509312306665
                  ],
                  [
                    -93943.66505619463,
                    2370924.63470438,
                    4.425093123066651
                  ],
                  [
                    -93943.66505619463,
                    2370450.99470438,
                    4.425093123066651
                  ],
                  [
                    -94439.64505619464,
                    2370450.99470438,
                    0.98509312306665
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:33:27+00:00",
            "end_time": "2018-09-08T05:07:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2434.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.41788953272075,
              71.37190754343,
              0.881263623858452
            ],
            [
              -156.4183608352741,
              71.37625751928783,
              0.881263623858452
            ],
            [
              -156.40511045847134,
              71.37641936038501,
              3.261263623858452
            ],
            [
              -156.4046417336908,
              71.37206934817496,
              3.261263623858452
            ],
            [
              -156.41788953272075,
              71.37190754343,
              0.881263623858452
            ]
          ]
        ]
      },
      "bbox": [
        -156.4183608,
        71.37190754,
        0.8812636239,
        -156.4046417,
        71.37641936,
        3.261263624
      ],
      "properties": {
        "datetime": "2018-09-08T05:13:06Z",
        "pc:count": 1700187,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88200.38653,
            "count": 1700187,
            "maximum": -87941.51571,
            "minimum": -88426.43571,
            "name": "X",
            "position": 0,
            "stddev": 129.2878816,
            "variance": 16715.35633
          },
          {
            "average": 2376546.495,
            "count": 1700187,
            "maximum": 2376810.071,
            "minimum": 2376336.531,
            "name": "Y",
            "position": 1,
            "stddev": 120.2297615,
            "variance": 14455.19556
          },
          {
            "average": 1.280753562,
            "count": 1700187,
            "maximum": 3.261263624,
            "minimum": 0.8812636239,
            "name": "Z",
            "position": 2,
            "stddev": 0.3694903397,
            "variance": 0.1365231112
          },
          {
            "average": 16649.43105,
            "count": 1700187,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11302.79713,
            "variance": 127753222.9
          },
          {
            "average": 1,
            "count": 1700187,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1700187,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4934845402,
            "count": 1700187,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499957694,
            "variance": 0.2499576958
          },
          {
            "average": 0.0005146492709,
            "count": 1700187,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02268005092,
            "variance": 0.0005143847096
          },
          {
            "average": 6.887437088,
            "count": 1700187,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.104428655,
            "variance": 9.637477273
          },
          {
            "average": 2.576811601,
            "count": 1700187,
            "maximum": 16.22999954,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.304447912,
            "variance": 53.3549593
          },
          {
            "average": 0.4747371907,
            "count": 1700187,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993615295,
            "variance": 0.2493619371
          },
          {
            "average": 411.6348684,
            "count": 1700187,
            "maximum": 413,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7055596986,
            "variance": 0.4978144883
          },
          {
            "average": 220418208.1,
            "count": 1700187,
            "maximum": 220418786,
            "minimum": 220417488.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 486.2420597,
            "variance": 236431.3407
          },
          {
            "average": 0.4747371907,
            "count": 1700187,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993615295,
            "variance": 0.2493619371
          },
          {
            "average": 0,
            "count": 1700187,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1700187,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1700187,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06093565002,
            "count": 1700187,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.239212312,
            "variance": 0.05722253023
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88426.43571,
          2376336.531,
          0.8812636239,
          -87941.51571,
          2376810.071,
          3.261263624
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88426.4357076795,
                2376336.5310205407,
                0.881263623858452
              ],
              [
                -88426.4357076795,
                2376810.071020541,
                0.881263623858452
              ],
              [
                -87941.51570767949,
                2376810.071020541,
                3.261263623858452
              ],
              [
                -87941.51570767949,
                2376336.5310205407,
                3.261263623858452
              ],
              [
                -88426.4357076795,
                2376336.5310205407,
                0.881263623858452
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:13:06+00:00",
        "end_time": "2018-09-08T04:51:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2434.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2434.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2434.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2434.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4183608,
            71.37190754,
            0.8812636239,
            -156.4046417,
            71.37641936,
            3.261263624
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.41788953272075,
                  71.37190754343,
                  0.881263623858452
                ],
                [
                  -156.4183608352741,
                  71.37625751928783,
                  0.881263623858452
                ],
                [
                  -156.40511045847134,
                  71.37641936038501,
                  3.261263623858452
                ],
                [
                  -156.4046417336908,
                  71.37206934817496,
                  3.261263623858452
                ],
                [
                  -156.41788953272075,
                  71.37190754343,
                  0.881263623858452
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2434.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2434.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:13:06Z",
            "pc:count": 1700187,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88200.38653,
                "count": 1700187,
                "maximum": -87941.51571,
                "minimum": -88426.43571,
                "name": "X",
                "position": 0,
                "stddev": 129.2878816,
                "variance": 16715.35633
              },
              {
                "average": 2376546.495,
                "count": 1700187,
                "maximum": 2376810.071,
                "minimum": 2376336.531,
                "name": "Y",
                "position": 1,
                "stddev": 120.2297615,
                "variance": 14455.19556
              },
              {
                "average": 1.280753562,
                "count": 1700187,
                "maximum": 3.261263624,
                "minimum": 0.8812636239,
                "name": "Z",
                "position": 2,
                "stddev": 0.3694903397,
                "variance": 0.1365231112
              },
              {
                "average": 16649.43105,
                "count": 1700187,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11302.79713,
                "variance": 127753222.9
              },
              {
                "average": 1,
                "count": 1700187,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1700187,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4934845402,
                "count": 1700187,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499957694,
                "variance": 0.2499576958
              },
              {
                "average": 0.0005146492709,
                "count": 1700187,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02268005092,
                "variance": 0.0005143847096
              },
              {
                "average": 6.887437088,
                "count": 1700187,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.104428655,
                "variance": 9.637477273
              },
              {
                "average": 2.576811601,
                "count": 1700187,
                "maximum": 16.22999954,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.304447912,
                "variance": 53.3549593
              },
              {
                "average": 0.4747371907,
                "count": 1700187,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993615295,
                "variance": 0.2493619371
              },
              {
                "average": 411.6348684,
                "count": 1700187,
                "maximum": 413,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7055596986,
                "variance": 0.4978144883
              },
              {
                "average": 220418208.1,
                "count": 1700187,
                "maximum": 220418786,
                "minimum": 220417488.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 486.2420597,
                "variance": 236431.3407
              },
              {
                "average": 0.4747371907,
                "count": 1700187,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993615295,
                "variance": 0.2493619371
              },
              {
                "average": 0,
                "count": 1700187,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1700187,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1700187,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06093565002,
                "count": 1700187,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.239212312,
                "variance": 0.05722253023
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88426.43571,
              2376336.531,
              0.8812636239,
              -87941.51571,
              2376810.071,
              3.261263624
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88426.4357076795,
                    2376336.5310205407,
                    0.881263623858452
                  ],
                  [
                    -88426.4357076795,
                    2376810.071020541,
                    0.881263623858452
                  ],
                  [
                    -87941.51570767949,
                    2376810.071020541,
                    3.261263623858452
                  ],
                  [
                    -87941.51570767949,
                    2376336.5310205407,
                    3.261263623858452
                  ],
                  [
                    -88426.4357076795,
                    2376336.5310205407,
                    0.881263623858452
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:13:06+00:00",
            "end_time": "2018-09-08T04:51:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2420.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4693845082732,
              71.37005457460646,
              0.828798489104783
            ],
            [
              -156.46966468052472,
              71.37258687277802,
              0.828798489104783
            ],
            [
              -156.46305499928675,
              71.37266944571054,
              1.488798489104784
            ],
            [
              -156.46277557549624,
              71.37013713674315,
              1.488798489104784
            ],
            [
              -156.4693845082732,
              71.37005457460646,
              0.828798489104783
            ]
          ]
        ]
      },
      "bbox": [
        -156.4696647,
        71.37005457,
        0.8287984891,
        -156.4627756,
        71.37266945,
        1.488798489
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:08Z",
        "pc:count": 253851,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90230.80213,
            "count": 253851,
            "maximum": -90074.39168,
            "minimum": -90316.33168,
            "name": "X",
            "position": 0,
            "stddev": 54.58855595,
            "variance": 2979.910441
          },
          {
            "average": 2376385.354,
            "count": 253851,
            "maximum": 2376480.06,
            "minimum": 2376204.38,
            "name": "Y",
            "position": 1,
            "stddev": 63.15043217,
            "variance": 3987.977083
          },
          {
            "average": 1.122839521,
            "count": 253851,
            "maximum": 1.488798489,
            "minimum": 0.8287984891,
            "name": "Z",
            "position": 2,
            "stddev": 0.07130605301,
            "variance": 0.005084553195
          },
          {
            "average": 14771.77532,
            "count": 253851,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10952.4438,
            "variance": 119956025.1
          },
          {
            "average": 1,
            "count": 253851,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 253851,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.514652296,
            "count": 253851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4997862485,
            "variance": 0.2497862942
          },
          {
            "average": 0.0007208953284,
            "count": 253851,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02683986729,
            "variance": 0.0007203784761
          },
          {
            "average": 7.532461956,
            "count": 253851,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.551066967,
            "variance": 6.507942672
          },
          {
            "average": -4.218365482,
            "count": 253851,
            "maximum": 16.30800056,
            "minimum": -10.83600044,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.028401471,
            "variance": 36.34162429
          },
          {
            "average": 0.5110793339,
            "count": 253851,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998782179,
            "variance": 0.2498782327
          },
          {
            "average": 408.4783672,
            "count": 253851,
            "maximum": 410,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6377709905,
            "variance": 0.4067518363
          },
          {
            "average": 220416441.2,
            "count": 253851,
            "maximum": 220417468.9,
            "minimum": 220415438,
            "name": "GpsTime",
            "position": 12,
            "stddev": 309.6866854,
            "variance": 95905.84314
          },
          {
            "average": 0.5110793339,
            "count": 253851,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998782179,
            "variance": 0.2498782327
          },
          {
            "average": 0,
            "count": 253851,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 253851,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 253851,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07860910534,
            "count": 253851,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2691282208,
            "variance": 0.07242999922
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90316.33168,
          2376204.38,
          0.8287984891,
          -90074.39168,
          2376480.06,
          1.488798489
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90316.33167955672,
                2376204.38035639,
                0.828798489104783
              ],
              [
                -90316.33167955672,
                2376480.0603563897,
                0.828798489104783
              ],
              [
                -90074.39167955672,
                2376480.0603563897,
                1.488798489104784
              ],
              [
                -90074.39167955672,
                2376204.38035639,
                1.488798489104784
              ],
              [
                -90316.33167955672,
                2376204.38035639,
                0.828798489104783
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:08+00:00",
        "end_time": "2018-09-08T04:17:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2420.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2420.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2420.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2420.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4696647,
            71.37005457,
            0.8287984891,
            -156.4627756,
            71.37266945,
            1.488798489
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4693845082732,
                  71.37005457460646,
                  0.828798489104783
                ],
                [
                  -156.46966468052472,
                  71.37258687277802,
                  0.828798489104783
                ],
                [
                  -156.46305499928675,
                  71.37266944571054,
                  1.488798489104784
                ],
                [
                  -156.46277557549624,
                  71.37013713674315,
                  1.488798489104784
                ],
                [
                  -156.4693845082732,
                  71.37005457460646,
                  0.828798489104783
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2420.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2420.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:08Z",
            "pc:count": 253851,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90230.80213,
                "count": 253851,
                "maximum": -90074.39168,
                "minimum": -90316.33168,
                "name": "X",
                "position": 0,
                "stddev": 54.58855595,
                "variance": 2979.910441
              },
              {
                "average": 2376385.354,
                "count": 253851,
                "maximum": 2376480.06,
                "minimum": 2376204.38,
                "name": "Y",
                "position": 1,
                "stddev": 63.15043217,
                "variance": 3987.977083
              },
              {
                "average": 1.122839521,
                "count": 253851,
                "maximum": 1.488798489,
                "minimum": 0.8287984891,
                "name": "Z",
                "position": 2,
                "stddev": 0.07130605301,
                "variance": 0.005084553195
              },
              {
                "average": 14771.77532,
                "count": 253851,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10952.4438,
                "variance": 119956025.1
              },
              {
                "average": 1,
                "count": 253851,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 253851,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.514652296,
                "count": 253851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4997862485,
                "variance": 0.2497862942
              },
              {
                "average": 0.0007208953284,
                "count": 253851,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02683986729,
                "variance": 0.0007203784761
              },
              {
                "average": 7.532461956,
                "count": 253851,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.551066967,
                "variance": 6.507942672
              },
              {
                "average": -4.218365482,
                "count": 253851,
                "maximum": 16.30800056,
                "minimum": -10.83600044,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.028401471,
                "variance": 36.34162429
              },
              {
                "average": 0.5110793339,
                "count": 253851,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998782179,
                "variance": 0.2498782327
              },
              {
                "average": 408.4783672,
                "count": 253851,
                "maximum": 410,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6377709905,
                "variance": 0.4067518363
              },
              {
                "average": 220416441.2,
                "count": 253851,
                "maximum": 220417468.9,
                "minimum": 220415438,
                "name": "GpsTime",
                "position": 12,
                "stddev": 309.6866854,
                "variance": 95905.84314
              },
              {
                "average": 0.5110793339,
                "count": 253851,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998782179,
                "variance": 0.2498782327
              },
              {
                "average": 0,
                "count": 253851,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 253851,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 253851,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07860910534,
                "count": 253851,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2691282208,
                "variance": 0.07242999922
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90316.33168,
              2376204.38,
              0.8287984891,
              -90074.39168,
              2376480.06,
              1.488798489
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90316.33167955672,
                    2376204.38035639,
                    0.828798489104783
                  ],
                  [
                    -90316.33167955672,
                    2376480.0603563897,
                    0.828798489104783
                  ],
                  [
                    -90074.39167955672,
                    2376480.0603563897,
                    1.488798489104784
                  ],
                  [
                    -90074.39167955672,
                    2376204.38035639,
                    1.488798489104784
                  ],
                  [
                    -90316.33167955672,
                    2376204.38035639,
                    0.828798489104783
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:08+00:00",
            "end_time": "2018-09-08T04:17:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2455.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4425508452228,
              71.38459896608936,
              0.848422401402678
            ],
            [
              -156.4426863940261,
              71.38583695998547,
              0.848422401402678
            ],
            [
              -156.43907638996853,
              71.38588157006993,
              1.468422401402679
            ],
            [
              -156.43894104112982,
              71.38464357332008,
              1.468422401402679
            ],
            [
              -156.4425508452228,
              71.38459896608936,
              0.848422401402678
            ]
          ]
        ]
      },
      "bbox": [
        -156.4426864,
        71.38459897,
        0.8484224014,
        -156.438941,
        71.38588157,
        1.468422401
      ],
      "properties": {
        "datetime": "2018-09-08T04:32:38Z",
        "pc:count": 83197,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89231.05386,
            "count": 83197,
            "maximum": -89145.11083,
            "minimum": -89277.17083,
            "name": "X",
            "position": 0,
            "stddev": 30.08081075,
            "variance": 904.8551754
          },
          {
            "average": 2377797.046,
            "count": 83197,
            "maximum": 2377883.999,
            "minimum": 2377749.239,
            "name": "Y",
            "position": 1,
            "stddev": 30.63609338,
            "variance": 938.5702175
          },
          {
            "average": 1.154042436,
            "count": 83197,
            "maximum": 1.468422401,
            "minimum": 0.8484224014,
            "name": "Z",
            "position": 2,
            "stddev": 0.07454868783,
            "variance": 0.005557506858
          },
          {
            "average": 16415.22678,
            "count": 83197,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10657.08828,
            "variance": 113573530.7
          },
          {
            "average": 1,
            "count": 83197,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 83197,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4936596272,
            "count": 83197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999628028,
            "variance": 0.2499628041
          },
          {
            "average": 0.0005529045518,
            "count": 83197,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02350756241,
            "variance": 0.0005526054905
          },
          {
            "average": 7.289481592,
            "count": 83197,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.802118731,
            "variance": 7.851869385
          },
          {
            "average": 2.567196678,
            "count": 83197,
            "maximum": 13.48200035,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.881096808,
            "variance": 47.34949328
          },
          {
            "average": 0.4901378655,
            "count": 83197,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999057332,
            "variance": 0.2499057421
          },
          {
            "average": 407.1578542,
            "count": 83197,
            "maximum": 408,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6022329331,
            "variance": 0.3626845058
          },
          {
            "average": 220415650,
            "count": 83197,
            "maximum": 220416358.3,
            "minimum": 220415235.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 436.8711785,
            "variance": 190856.4266
          },
          {
            "average": 0.4901378655,
            "count": 83197,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999057332,
            "variance": 0.2499057421
          },
          {
            "average": 0,
            "count": 83197,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 83197,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 83197,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06585573999,
            "count": 83197,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2480312499,
            "variance": 0.06151950094
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89277.17083,
          2377749.239,
          0.8484224014,
          -89145.11083,
          2377883.999,
          1.468422401
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89277.17082806391,
                2377749.239049427,
                0.848422401402678
              ],
              [
                -89277.17082806391,
                2377883.999049427,
                0.848422401402678
              ],
              [
                -89145.11082806392,
                2377883.999049427,
                1.468422401402679
              ],
              [
                -89145.11082806392,
                2377749.239049427,
                1.468422401402679
              ],
              [
                -89277.17082806391,
                2377749.239049427,
                0.848422401402678
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:32:38+00:00",
        "end_time": "2018-09-08T04:13:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2455.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2455.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2455.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2455.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4426864,
            71.38459897,
            0.8484224014,
            -156.438941,
            71.38588157,
            1.468422401
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4425508452228,
                  71.38459896608936,
                  0.848422401402678
                ],
                [
                  -156.4426863940261,
                  71.38583695998547,
                  0.848422401402678
                ],
                [
                  -156.43907638996853,
                  71.38588157006993,
                  1.468422401402679
                ],
                [
                  -156.43894104112982,
                  71.38464357332008,
                  1.468422401402679
                ],
                [
                  -156.4425508452228,
                  71.38459896608936,
                  0.848422401402678
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2455.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2455.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:32:38Z",
            "pc:count": 83197,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89231.05386,
                "count": 83197,
                "maximum": -89145.11083,
                "minimum": -89277.17083,
                "name": "X",
                "position": 0,
                "stddev": 30.08081075,
                "variance": 904.8551754
              },
              {
                "average": 2377797.046,
                "count": 83197,
                "maximum": 2377883.999,
                "minimum": 2377749.239,
                "name": "Y",
                "position": 1,
                "stddev": 30.63609338,
                "variance": 938.5702175
              },
              {
                "average": 1.154042436,
                "count": 83197,
                "maximum": 1.468422401,
                "minimum": 0.8484224014,
                "name": "Z",
                "position": 2,
                "stddev": 0.07454868783,
                "variance": 0.005557506858
              },
              {
                "average": 16415.22678,
                "count": 83197,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10657.08828,
                "variance": 113573530.7
              },
              {
                "average": 1,
                "count": 83197,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 83197,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4936596272,
                "count": 83197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999628028,
                "variance": 0.2499628041
              },
              {
                "average": 0.0005529045518,
                "count": 83197,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02350756241,
                "variance": 0.0005526054905
              },
              {
                "average": 7.289481592,
                "count": 83197,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.802118731,
                "variance": 7.851869385
              },
              {
                "average": 2.567196678,
                "count": 83197,
                "maximum": 13.48200035,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.881096808,
                "variance": 47.34949328
              },
              {
                "average": 0.4901378655,
                "count": 83197,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999057332,
                "variance": 0.2499057421
              },
              {
                "average": 407.1578542,
                "count": 83197,
                "maximum": 408,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6022329331,
                "variance": 0.3626845058
              },
              {
                "average": 220415650,
                "count": 83197,
                "maximum": 220416358.3,
                "minimum": 220415235.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 436.8711785,
                "variance": 190856.4266
              },
              {
                "average": 0.4901378655,
                "count": 83197,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999057332,
                "variance": 0.2499057421
              },
              {
                "average": 0,
                "count": 83197,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 83197,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 83197,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06585573999,
                "count": 83197,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2480312499,
                "variance": 0.06151950094
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89277.17083,
              2377749.239,
              0.8484224014,
              -89145.11083,
              2377883.999,
              1.468422401
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89277.17082806391,
                    2377749.239049427,
                    0.848422401402678
                  ],
                  [
                    -89277.17082806391,
                    2377883.999049427,
                    0.848422401402678
                  ],
                  [
                    -89145.11082806392,
                    2377883.999049427,
                    1.468422401402679
                  ],
                  [
                    -89145.11082806392,
                    2377749.239049427,
                    1.468422401402679
                  ],
                  [
                    -89277.17082806391,
                    2377749.239049427,
                    0.848422401402678
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:32:38+00:00",
            "end_time": "2018-09-08T04:13:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2421.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4387378367581,
              71.36915459256717,
              0.868795749702307
            ],
            [
              -156.4390866145812,
              71.37234664557892,
              0.868795749702307
            ],
            [
              -156.43075519834332,
              71.37244940062872,
              1.528795749702307
            ],
            [
              -156.4304076097412,
              71.36925733068313,
              1.528795749702307
            ],
            [
              -156.4387378367581,
              71.36915459256717,
              0.868795749702307
            ]
          ]
        ]
      },
      "bbox": [
        -156.4390866,
        71.36915459,
        0.8687957497,
        -156.4304076,
        71.3724494,
        1.52879575
      ],
      "properties": {
        "datetime": "2018-09-08T05:09:55Z",
        "pc:count": 360938,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89007.27305,
            "count": 360938,
            "maximum": -88894.58882,
            "minimum": -89199.54882,
            "name": "X",
            "position": 0,
            "stddev": 70.41166554,
            "variance": 4957.802645
          },
          {
            "average": 2376289.271,
            "count": 360938,
            "maximum": 2376412.616,
            "minimum": 2376065.116,
            "name": "Y",
            "position": 1,
            "stddev": 81.05403346,
            "variance": 6569.756341
          },
          {
            "average": 1.163082054,
            "count": 360938,
            "maximum": 1.52879575,
            "minimum": 0.8687957497,
            "name": "Z",
            "position": 2,
            "stddev": 0.06608362296,
            "variance": 0.004367045224
          },
          {
            "average": 14564.57181,
            "count": 360938,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11518.32835,
            "variance": 132671887.9
          },
          {
            "average": 1,
            "count": 360938,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 360938,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5078656168,
            "count": 360938,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999388208,
            "variance": 0.2499388245
          },
          {
            "average": 0.0006095229652,
            "count": 360938,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02468102783,
            "variance": 0.0006091531346
          },
          {
            "average": 7.556089966,
            "count": 360938,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.564563166,
            "variance": 6.576984234
          },
          {
            "average": -2.153250121,
            "count": 360938,
            "maximum": 16.31999969,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.684722096,
            "variance": 59.05495369
          },
          {
            "average": 0.4839252171,
            "count": 360938,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997422268,
            "variance": 0.2497422933
          },
          {
            "average": 410.747217,
            "count": 360938,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7055747409,
            "variance": 0.497835715
          },
          {
            "average": 220417730.7,
            "count": 360938,
            "maximum": 220418595.2,
            "minimum": 220416571,
            "name": "GpsTime",
            "position": 12,
            "stddev": 381.2310064,
            "variance": 145337.0803
          },
          {
            "average": 0.4839252171,
            "count": 360938,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997422268,
            "variance": 0.2497422933
          },
          {
            "average": 0,
            "count": 360938,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 360938,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 360938,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06818899645,
            "count": 360938,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2520702943,
            "variance": 0.06353943325
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89199.54882,
          2376065.116,
          0.8687957497,
          -88894.58882,
          2376412.616,
          1.52879575
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89199.54882264897,
                2376065.1162003158,
                0.868795749702307
              ],
              [
                -89199.54882264897,
                2376412.6162003158,
                0.868795749702307
              ],
              [
                -88894.58882264898,
                2376412.6162003158,
                1.528795749702307
              ],
              [
                -88894.58882264898,
                2376065.1162003158,
                1.528795749702307
              ],
              [
                -89199.54882264897,
                2376065.1162003158,
                0.868795749702307
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:09:55+00:00",
        "end_time": "2018-09-08T04:36:11+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2421.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2421.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2421.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2421.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4390866,
            71.36915459,
            0.8687957497,
            -156.4304076,
            71.3724494,
            1.52879575
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4387378367581,
                  71.36915459256717,
                  0.868795749702307
                ],
                [
                  -156.4390866145812,
                  71.37234664557892,
                  0.868795749702307
                ],
                [
                  -156.43075519834332,
                  71.37244940062872,
                  1.528795749702307
                ],
                [
                  -156.4304076097412,
                  71.36925733068313,
                  1.528795749702307
                ],
                [
                  -156.4387378367581,
                  71.36915459256717,
                  0.868795749702307
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2421.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2421.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:09:55Z",
            "pc:count": 360938,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89007.27305,
                "count": 360938,
                "maximum": -88894.58882,
                "minimum": -89199.54882,
                "name": "X",
                "position": 0,
                "stddev": 70.41166554,
                "variance": 4957.802645
              },
              {
                "average": 2376289.271,
                "count": 360938,
                "maximum": 2376412.616,
                "minimum": 2376065.116,
                "name": "Y",
                "position": 1,
                "stddev": 81.05403346,
                "variance": 6569.756341
              },
              {
                "average": 1.163082054,
                "count": 360938,
                "maximum": 1.52879575,
                "minimum": 0.8687957497,
                "name": "Z",
                "position": 2,
                "stddev": 0.06608362296,
                "variance": 0.004367045224
              },
              {
                "average": 14564.57181,
                "count": 360938,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11518.32835,
                "variance": 132671887.9
              },
              {
                "average": 1,
                "count": 360938,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 360938,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5078656168,
                "count": 360938,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999388208,
                "variance": 0.2499388245
              },
              {
                "average": 0.0006095229652,
                "count": 360938,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02468102783,
                "variance": 0.0006091531346
              },
              {
                "average": 7.556089966,
                "count": 360938,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.564563166,
                "variance": 6.576984234
              },
              {
                "average": -2.153250121,
                "count": 360938,
                "maximum": 16.31999969,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.684722096,
                "variance": 59.05495369
              },
              {
                "average": 0.4839252171,
                "count": 360938,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997422268,
                "variance": 0.2497422933
              },
              {
                "average": 410.747217,
                "count": 360938,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7055747409,
                "variance": 0.497835715
              },
              {
                "average": 220417730.7,
                "count": 360938,
                "maximum": 220418595.2,
                "minimum": 220416571,
                "name": "GpsTime",
                "position": 12,
                "stddev": 381.2310064,
                "variance": 145337.0803
              },
              {
                "average": 0.4839252171,
                "count": 360938,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997422268,
                "variance": 0.2497422933
              },
              {
                "average": 0,
                "count": 360938,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 360938,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 360938,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06818899645,
                "count": 360938,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2520702943,
                "variance": 0.06353943325
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89199.54882,
              2376065.116,
              0.8687957497,
              -88894.58882,
              2376412.616,
              1.52879575
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89199.54882264897,
                    2376065.1162003158,
                    0.868795749702307
                  ],
                  [
                    -89199.54882264897,
                    2376412.6162003158,
                    0.868795749702307
                  ],
                  [
                    -88894.58882264898,
                    2376412.6162003158,
                    1.528795749702307
                  ],
                  [
                    -88894.58882264898,
                    2376065.1162003158,
                    1.528795749702307
                  ],
                  [
                    -89199.54882264897,
                    2376065.1162003158,
                    0.868795749702307
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:09:55+00:00",
            "end_time": "2018-09-08T04:36:11+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2435.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4050765515171,
              71.37184276406553,
              0.916158071562559
            ],
            [
              -156.40536279828854,
              71.37449901282581,
              0.916158071562559
            ],
            [
              -156.39463693031178,
              71.37462939010669,
              1.536158071562559
            ],
            [
              -156.3943519577389,
              71.37197312346424,
              1.536158071562559
            ],
            [
              -156.4050765515171,
              71.37184276406553,
              0.916158071562559
            ]
          ]
        ]
      },
      "bbox": [
        -156.4053628,
        71.37184276,
        0.9161580716,
        -156.394352,
        71.37462939,
        1.536158072
      ],
      "properties": {
        "datetime": "2018-09-08T05:28:09Z",
        "pc:count": 416947,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87825.93774,
            "count": 416947,
            "maximum": -87565.74323,
            "minimum": -87958.30323,
            "name": "X",
            "position": 0,
            "stddev": 90.05043209,
            "variance": 8109.08032
          },
          {
            "average": 2376421.227,
            "count": 416947,
            "maximum": 2376601.633,
            "minimum": 2376312.473,
            "name": "Y",
            "position": 1,
            "stddev": 66.84902051,
            "variance": 4468.791543
          },
          {
            "average": 1.18393069,
            "count": 416947,
            "maximum": 1.536158072,
            "minimum": 0.9161580716,
            "name": "Z",
            "position": 2,
            "stddev": 0.06780574423,
            "variance": 0.00459761895
          },
          {
            "average": 17523.79653,
            "count": 416947,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 13156.74362,
            "variance": 173099902.8
          },
          {
            "average": 1,
            "count": 416947,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 416947,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5115686166,
            "count": 416947,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998667486,
            "variance": 0.2498667664
          },
          {
            "average": 0.0007530933188,
            "count": 416947,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02743224333,
            "variance": 0.0007525279741
          },
          {
            "average": 7.580150475,
            "count": 416947,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.520325648,
            "variance": 6.352041371
          },
          {
            "average": -3.138727733,
            "count": 416947,
            "maximum": 16.26000023,
            "minimum": -15.61800003,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.61492339,
            "variance": 43.75721145
          },
          {
            "average": 0.4851767731,
            "count": 416947,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499780823,
            "variance": 0.249780871
          },
          {
            "average": 412.5474557,
            "count": 416947,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6747561143,
            "variance": 0.4552958137
          },
          {
            "average": 220418698.5,
            "count": 416947,
            "maximum": 220419689.7,
            "minimum": 220417673.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 334.2575708,
            "variance": 111728.1236
          },
          {
            "average": 0.4851767731,
            "count": 416947,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499780823,
            "variance": 0.249780871
          },
          {
            "average": 0,
            "count": 416947,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 416947,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 416947,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06353565321,
            "count": 416947,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2439242027,
            "variance": 0.05949901669
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87958.30323,
          2376312.473,
          0.9161580716,
          -87565.74323,
          2376601.633,
          1.536158072
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87958.3032311077,
                2376312.4729801435,
                0.916158071562559
              ],
              [
                -87958.3032311077,
                2376601.6329801437,
                0.916158071562559
              ],
              [
                -87565.7432311077,
                2376601.6329801437,
                1.536158071562559
              ],
              [
                -87565.7432311077,
                2376312.4729801435,
                1.536158071562559
              ],
              [
                -87958.3032311077,
                2376312.4729801435,
                0.916158071562559
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:28:09+00:00",
        "end_time": "2018-09-08T04:54:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2435.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2435.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2435.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2435.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4053628,
            71.37184276,
            0.9161580716,
            -156.394352,
            71.37462939,
            1.536158072
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4050765515171,
                  71.37184276406553,
                  0.916158071562559
                ],
                [
                  -156.40536279828854,
                  71.37449901282581,
                  0.916158071562559
                ],
                [
                  -156.39463693031178,
                  71.37462939010669,
                  1.536158071562559
                ],
                [
                  -156.3943519577389,
                  71.37197312346424,
                  1.536158071562559
                ],
                [
                  -156.4050765515171,
                  71.37184276406553,
                  0.916158071562559
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2435.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2435.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:28:09Z",
            "pc:count": 416947,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87825.93774,
                "count": 416947,
                "maximum": -87565.74323,
                "minimum": -87958.30323,
                "name": "X",
                "position": 0,
                "stddev": 90.05043209,
                "variance": 8109.08032
              },
              {
                "average": 2376421.227,
                "count": 416947,
                "maximum": 2376601.633,
                "minimum": 2376312.473,
                "name": "Y",
                "position": 1,
                "stddev": 66.84902051,
                "variance": 4468.791543
              },
              {
                "average": 1.18393069,
                "count": 416947,
                "maximum": 1.536158072,
                "minimum": 0.9161580716,
                "name": "Z",
                "position": 2,
                "stddev": 0.06780574423,
                "variance": 0.00459761895
              },
              {
                "average": 17523.79653,
                "count": 416947,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 13156.74362,
                "variance": 173099902.8
              },
              {
                "average": 1,
                "count": 416947,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 416947,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5115686166,
                "count": 416947,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998667486,
                "variance": 0.2498667664
              },
              {
                "average": 0.0007530933188,
                "count": 416947,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02743224333,
                "variance": 0.0007525279741
              },
              {
                "average": 7.580150475,
                "count": 416947,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.520325648,
                "variance": 6.352041371
              },
              {
                "average": -3.138727733,
                "count": 416947,
                "maximum": 16.26000023,
                "minimum": -15.61800003,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.61492339,
                "variance": 43.75721145
              },
              {
                "average": 0.4851767731,
                "count": 416947,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499780823,
                "variance": 0.249780871
              },
              {
                "average": 412.5474557,
                "count": 416947,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6747561143,
                "variance": 0.4552958137
              },
              {
                "average": 220418698.5,
                "count": 416947,
                "maximum": 220419689.7,
                "minimum": 220417673.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 334.2575708,
                "variance": 111728.1236
              },
              {
                "average": 0.4851767731,
                "count": 416947,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499780823,
                "variance": 0.249780871
              },
              {
                "average": 0,
                "count": 416947,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 416947,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 416947,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06353565321,
                "count": 416947,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2439242027,
                "variance": 0.05949901669
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87958.30323,
              2376312.473,
              0.9161580716,
              -87565.74323,
              2376601.633,
              1.536158072
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87958.3032311077,
                    2376312.4729801435,
                    0.916158071562559
                  ],
                  [
                    -87958.3032311077,
                    2376601.6329801437,
                    0.916158071562559
                  ],
                  [
                    -87565.7432311077,
                    2376601.6329801437,
                    1.536158071562559
                  ],
                  [
                    -87565.7432311077,
                    2376312.4729801435,
                    1.536158071562559
                  ],
                  [
                    -87958.3032311077,
                    2376312.4729801435,
                    0.916158071562559
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:28:09+00:00",
            "end_time": "2018-09-08T04:54:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2422.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.43083483135493,
              71.36792125586446,
              0.808322532538075
            ],
            [
              -156.43130839142296,
              71.37226942845393,
              0.808322532538075
            ],
            [
              -156.417953926938,
              71.37243343862015,
              39.04832253253808
            ],
            [
              -156.4174829633862,
              71.36808522921503,
              39.04832253253808
            ],
            [
              -156.43083483135493,
              71.36792125586446,
              0.808322532538075
            ]
          ]
        ]
      },
      "bbox": [
        -156.4313084,
        71.36792126,
        0.8083225325,
        -156.417483,
        71.37243344,
        39.04832253
      ],
      "properties": {
        "datetime": "2018-09-08T05:27:54Z",
        "pc:count": 1419083,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88655.45877,
            "count": 1419083,
            "maximum": -88426.70711,
            "minimum": -88915.52711,
            "name": "X",
            "position": 0,
            "stddev": 133.1867755,
            "variance": 17738.71716
          },
          {
            "average": 2376165.702,
            "count": 1419083,
            "maximum": 2376393.791,
            "minimum": 2375920.431,
            "name": "Y",
            "position": 1,
            "stddev": 128.7985206,
            "variance": 16589.05891
          },
          {
            "average": 1.148973058,
            "count": 1419083,
            "maximum": 39.04832253,
            "minimum": 0.8083225325,
            "name": "Z",
            "position": 2,
            "stddev": 0.08229455865,
            "variance": 0.006772394384
          },
          {
            "average": 16220.50892,
            "count": 1419083,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12355.29623,
            "variance": 152653345
          },
          {
            "average": 1,
            "count": 1419083,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1419083,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4958652877,
            "count": 1419083,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.49998308,
            "variance": 0.2499830803
          },
          {
            "average": 0.0007356863552,
            "count": 1419083,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02711356928,
            "variance": 0.0007351456388
          },
          {
            "average": 7.618245726,
            "count": 1419083,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.495296278,
            "variance": 6.226503513
          },
          {
            "average": 1.541337506,
            "count": 1419083,
            "maximum": 16.51799965,
            "minimum": -15.79199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.701578876,
            "variance": 59.31431719
          },
          {
            "average": 0.4767599922,
            "count": 1419083,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499459786,
            "variance": 0.2494600778
          },
          {
            "average": 411.6936775,
            "count": 1419083,
            "maximum": 414,
            "minimum": 410,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7617271857,
            "variance": 0.5802283055
          },
          {
            "average": 220418257.2,
            "count": 1419083,
            "maximum": 220419674.8,
            "minimum": 220417477.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 482.610744,
            "variance": 232913.1302
          },
          {
            "average": 0.4767599922,
            "count": 1419083,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499459786,
            "variance": 0.2494600778
          },
          {
            "average": 0,
            "count": 1419083,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1419083,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1419083,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06386518618,
            "count": 1419083,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2445127119,
            "variance": 0.0597864663
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88915.52711,
          2375920.431,
          0.8083225325,
          -88426.70711,
          2376393.791,
          39.04832253
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88915.52711135312,
                2375920.4307974936,
                0.808322532538075
              ],
              [
                -88915.52711135312,
                2376393.790797494,
                0.808322532538075
              ],
              [
                -88426.70711135311,
                2376393.790797494,
                39.04832253253808
              ],
              [
                -88426.70711135311,
                2375920.4307974936,
                39.04832253253808
              ],
              [
                -88915.52711135312,
                2375920.4307974936,
                0.808322532538075
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:27:54+00:00",
        "end_time": "2018-09-08T04:51:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2422.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2422.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2422.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2422.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4313084,
            71.36792126,
            0.8083225325,
            -156.417483,
            71.37243344,
            39.04832253
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.43083483135493,
                  71.36792125586446,
                  0.808322532538075
                ],
                [
                  -156.43130839142296,
                  71.37226942845393,
                  0.808322532538075
                ],
                [
                  -156.417953926938,
                  71.37243343862015,
                  39.04832253253808
                ],
                [
                  -156.4174829633862,
                  71.36808522921503,
                  39.04832253253808
                ],
                [
                  -156.43083483135493,
                  71.36792125586446,
                  0.808322532538075
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2422.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2422.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:27:54Z",
            "pc:count": 1419083,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88655.45877,
                "count": 1419083,
                "maximum": -88426.70711,
                "minimum": -88915.52711,
                "name": "X",
                "position": 0,
                "stddev": 133.1867755,
                "variance": 17738.71716
              },
              {
                "average": 2376165.702,
                "count": 1419083,
                "maximum": 2376393.791,
                "minimum": 2375920.431,
                "name": "Y",
                "position": 1,
                "stddev": 128.7985206,
                "variance": 16589.05891
              },
              {
                "average": 1.148973058,
                "count": 1419083,
                "maximum": 39.04832253,
                "minimum": 0.8083225325,
                "name": "Z",
                "position": 2,
                "stddev": 0.08229455865,
                "variance": 0.006772394384
              },
              {
                "average": 16220.50892,
                "count": 1419083,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12355.29623,
                "variance": 152653345
              },
              {
                "average": 1,
                "count": 1419083,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1419083,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4958652877,
                "count": 1419083,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.49998308,
                "variance": 0.2499830803
              },
              {
                "average": 0.0007356863552,
                "count": 1419083,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02711356928,
                "variance": 0.0007351456388
              },
              {
                "average": 7.618245726,
                "count": 1419083,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.495296278,
                "variance": 6.226503513
              },
              {
                "average": 1.541337506,
                "count": 1419083,
                "maximum": 16.51799965,
                "minimum": -15.79199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.701578876,
                "variance": 59.31431719
              },
              {
                "average": 0.4767599922,
                "count": 1419083,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499459786,
                "variance": 0.2494600778
              },
              {
                "average": 411.6936775,
                "count": 1419083,
                "maximum": 414,
                "minimum": 410,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7617271857,
                "variance": 0.5802283055
              },
              {
                "average": 220418257.2,
                "count": 1419083,
                "maximum": 220419674.8,
                "minimum": 220417477.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 482.610744,
                "variance": 232913.1302
              },
              {
                "average": 0.4767599922,
                "count": 1419083,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499459786,
                "variance": 0.2494600778
              },
              {
                "average": 0,
                "count": 1419083,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1419083,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1419083,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06386518618,
                "count": 1419083,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2445127119,
                "variance": 0.0597864663
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88915.52711,
              2375920.431,
              0.8083225325,
              -88426.70711,
              2376393.791,
              39.04832253
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88915.52711135312,
                    2375920.4307974936,
                    0.808322532538075
                  ],
                  [
                    -88915.52711135312,
                    2376393.790797494,
                    0.808322532538075
                  ],
                  [
                    -88426.70711135311,
                    2376393.790797494,
                    39.04832253253808
                  ],
                  [
                    -88426.70711135311,
                    2375920.4307974936,
                    39.04832253253808
                  ],
                  [
                    -88915.52711135312,
                    2375920.4307974936,
                    0.808322532538075
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:27:54+00:00",
            "end_time": "2018-09-08T04:51:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2296.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.55005213584542,
              71.31973935324339,
              0.775586915406375
            ],
            [
              -156.55054143001277,
              71.32402960913345,
              0.775586915406375
            ],
            [
              -156.5406349581226,
              71.32415758269079,
              1.895586915406375
            ],
            [
              -156.54014756069003,
              71.31986729853594,
              1.895586915406375
            ],
            [
              -156.55005213584542,
              71.31973935324339,
              0.775586915406375
            ]
          ]
        ]
      },
      "bbox": [
        -156.5505414,
        71.31973935,
        0.7755869154,
        -156.5401476,
        71.32415758,
        1.895586915
      ],
      "properties": {
        "datetime": "2018-09-11T17:29:36Z",
        "pc:count": 1385612,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -93315.74674,
            "count": 1385612,
            "maximum": -93112.02656,
            "minimum": -93475.44656,
            "name": "X",
            "position": 0,
            "stddev": 88.08455089,
            "variance": 7758.888106
          },
          {
            "average": 2371046.863,
            "count": 1385612,
            "maximum": 2371312.357,
            "minimum": 2370845.117,
            "name": "Y",
            "position": 1,
            "stddev": 124.9056941,
            "variance": 15601.43241
          },
          {
            "average": 1.183054691,
            "count": 1385612,
            "maximum": 1.895586915,
            "minimum": 0.7755869154,
            "name": "Z",
            "position": 2,
            "stddev": 0.08904289656,
            "variance": 0.007928637429
          },
          {
            "average": 13613.24976,
            "count": 1385612,
            "maximum": 65535,
            "minimum": 1327,
            "name": "Intensity",
            "position": 3,
            "stddev": 12776.85789,
            "variance": 163248097.6
          },
          {
            "average": 1,
            "count": 1385612,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1385612,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4971824724,
            "count": 1385612,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999922419,
            "variance": 0.249992242
          },
          {
            "average": 0.0007332500007,
            "count": 1385612,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0270686696,
            "variance": 0.000732712874
          },
          {
            "average": 6.998550821,
            "count": 1385612,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.173654529,
            "variance": 10.07208307
          },
          {
            "average": 3.297298802,
            "count": 1385612,
            "maximum": 20.50799942,
            "minimum": -15.76799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.015925195,
            "variance": 81.28690712
          },
          {
            "average": 0.4839854158,
            "count": 1385612,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997436476,
            "variance": 0.2497437133
          },
          {
            "average": 428.1944094,
            "count": 1385612,
            "maximum": 452,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.80159987,
            "variance": 316.8969579
          },
          {
            "average": 220531359.6,
            "count": 1385612,
            "maximum": 220722176.8,
            "minimum": 220418906.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 145867.2259,
            "variance": 21277247600.0
          },
          {
            "average": 0.4839854158,
            "count": 1385612,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997436476,
            "variance": 0.2497437133
          },
          {
            "average": 0,
            "count": 1385612,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1385612,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1385612,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08614099762,
            "count": 1385612,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.280572242,
            "variance": 0.07872078297
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -93475.44656,
          2370845.117,
          0.7755869154,
          -93112.02656,
          2371312.357,
          1.895586915
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -93475.44655638369,
                2370845.1166944047,
                0.775586915406375
              ],
              [
                -93475.44655638369,
                2371312.356694405,
                0.775586915406375
              ],
              [
                -93112.02655638367,
                2371312.356694405,
                1.895586915406375
              ],
              [
                -93112.02655638367,
                2370845.1166944047,
                1.895586915406375
              ],
              [
                -93475.44655638369,
                2370845.1166944047,
                0.775586915406375
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-11T17:29:36+00:00",
        "end_time": "2018-09-08T05:15:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2296.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2296.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2296.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2296.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5505414,
            71.31973935,
            0.7755869154,
            -156.5401476,
            71.32415758,
            1.895586915
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.55005213584542,
                  71.31973935324339,
                  0.775586915406375
                ],
                [
                  -156.55054143001277,
                  71.32402960913345,
                  0.775586915406375
                ],
                [
                  -156.5406349581226,
                  71.32415758269079,
                  1.895586915406375
                ],
                [
                  -156.54014756069003,
                  71.31986729853594,
                  1.895586915406375
                ],
                [
                  -156.55005213584542,
                  71.31973935324339,
                  0.775586915406375
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2296.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2296.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-11T17:29:36Z",
            "pc:count": 1385612,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -93315.74674,
                "count": 1385612,
                "maximum": -93112.02656,
                "minimum": -93475.44656,
                "name": "X",
                "position": 0,
                "stddev": 88.08455089,
                "variance": 7758.888106
              },
              {
                "average": 2371046.863,
                "count": 1385612,
                "maximum": 2371312.357,
                "minimum": 2370845.117,
                "name": "Y",
                "position": 1,
                "stddev": 124.9056941,
                "variance": 15601.43241
              },
              {
                "average": 1.183054691,
                "count": 1385612,
                "maximum": 1.895586915,
                "minimum": 0.7755869154,
                "name": "Z",
                "position": 2,
                "stddev": 0.08904289656,
                "variance": 0.007928637429
              },
              {
                "average": 13613.24976,
                "count": 1385612,
                "maximum": 65535,
                "minimum": 1327,
                "name": "Intensity",
                "position": 3,
                "stddev": 12776.85789,
                "variance": 163248097.6
              },
              {
                "average": 1,
                "count": 1385612,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1385612,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4971824724,
                "count": 1385612,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999922419,
                "variance": 0.249992242
              },
              {
                "average": 0.0007332500007,
                "count": 1385612,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0270686696,
                "variance": 0.000732712874
              },
              {
                "average": 6.998550821,
                "count": 1385612,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.173654529,
                "variance": 10.07208307
              },
              {
                "average": 3.297298802,
                "count": 1385612,
                "maximum": 20.50799942,
                "minimum": -15.76799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.015925195,
                "variance": 81.28690712
              },
              {
                "average": 0.4839854158,
                "count": 1385612,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997436476,
                "variance": 0.2497437133
              },
              {
                "average": 428.1944094,
                "count": 1385612,
                "maximum": 452,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.80159987,
                "variance": 316.8969579
              },
              {
                "average": 220531359.6,
                "count": 1385612,
                "maximum": 220722176.8,
                "minimum": 220418906.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 145867.2259,
                "variance": 21277247600.0
              },
              {
                "average": 0.4839854158,
                "count": 1385612,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997436476,
                "variance": 0.2497437133
              },
              {
                "average": 0,
                "count": 1385612,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1385612,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1385612,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08614099762,
                "count": 1385612,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.280572242,
                "variance": 0.07872078297
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -93475.44656,
              2370845.117,
              0.7755869154,
              -93112.02656,
              2371312.357,
              1.895586915
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -93475.44655638369,
                    2370845.1166944047,
                    0.775586915406375
                  ],
                  [
                    -93475.44655638369,
                    2371312.356694405,
                    0.775586915406375
                  ],
                  [
                    -93112.02655638367,
                    2371312.356694405,
                    1.895586915406375
                  ],
                  [
                    -93112.02655638367,
                    2370845.1166944047,
                    1.895586915406375
                  ],
                  [
                    -93475.44655638369,
                    2370845.1166944047,
                    0.775586915406375
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-11T17:29:36+00:00",
            "end_time": "2018-09-08T05:15:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2440.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.45601034215613,
              71.37632293631486,
              0.775405249429744
            ],
            [
              -156.45648886326154,
              71.38067019632905,
              0.775405249429744
            ],
            [
              -156.4429229442651,
              71.3808384743391,
              1.495405249429743
            ],
            [
              -156.4424470610032,
              71.37649117654081,
              1.495405249429743
            ],
            [
              -156.45601034215613,
              71.37632293631486,
              0.775405249429744
            ]
          ]
        ]
      },
      "bbox": [
        -156.4564889,
        71.37632294,
        0.7754052494,
        -156.4424471,
        71.38083847,
        1.495405249
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:26Z",
        "pc:count": 1693169,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89550.24151,
            "count": 1693169,
            "maximum": -89305.80952,
            "minimum": -89802.18952,
            "name": "X",
            "position": 0,
            "stddev": 136.9714401,
            "variance": 18761.17541
          },
          {
            "average": 2377105.869,
            "count": 1693169,
            "maximum": 2377340.943,
            "minimum": 2376867.703,
            "name": "Y",
            "position": 1,
            "stddev": 126.4802774,
            "variance": 15997.26056
          },
          {
            "average": 1.113083373,
            "count": 1693169,
            "maximum": 1.495405249,
            "minimum": 0.7754052494,
            "name": "Z",
            "position": 2,
            "stddev": 0.06984874549,
            "variance": 0.004878847247
          },
          {
            "average": 14843.28027,
            "count": 1693169,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 11085.29934,
            "variance": 122883861.4
          },
          {
            "average": 1,
            "count": 1693169,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1693169,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5036248597,
            "count": 1693169,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999870079,
            "variance": 0.249987008
          },
          {
            "average": 0.0005864742385,
            "count": 1693169,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02421013492,
            "variance": 0.0005861306327
          },
          {
            "average": 7.319499117,
            "count": 1693169,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.798742641,
            "variance": 7.832960368
          },
          {
            "average": -0.7024442564,
            "count": 1693169,
            "maximum": 16.33200073,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.125209031,
            "variance": 66.01902179
          },
          {
            "average": 0.4816985192,
            "count": 1693169,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996650911,
            "variance": 0.2496652033
          },
          {
            "average": 408.1433047,
            "count": 1693169,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7488007753,
            "variance": 0.5607026011
          },
          {
            "average": 220416255.6,
            "count": 1693169,
            "maximum": 220417486.1,
            "minimum": 220415221.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 448.1291621,
            "variance": 200819.7459
          },
          {
            "average": 0.4816985192,
            "count": 1693169,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996650911,
            "variance": 0.2496652033
          },
          {
            "average": 0,
            "count": 1693169,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1693169,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1693169,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08502163694,
            "count": 1693169,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2789139726,
            "variance": 0.07779300414
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89802.18952,
          2376867.703,
          0.7754052494,
          -89305.80952,
          2377340.943,
          1.495405249
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89802.18951678001,
                2376867.703077805,
                0.775405249429744
              ],
              [
                -89802.18951678001,
                2377340.9430778055,
                0.775405249429744
              ],
              [
                -89305.80951678,
                2377340.9430778055,
                1.495405249429743
              ],
              [
                -89305.80951678,
                2376867.703077805,
                1.495405249429743
              ],
              [
                -89802.18951678001,
                2376867.703077805,
                0.775405249429744
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:26+00:00",
        "end_time": "2018-09-08T04:13:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2440.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2440.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2440.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2440.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4564889,
            71.37632294,
            0.7754052494,
            -156.4424471,
            71.38083847,
            1.495405249
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.45601034215613,
                  71.37632293631486,
                  0.775405249429744
                ],
                [
                  -156.45648886326154,
                  71.38067019632905,
                  0.775405249429744
                ],
                [
                  -156.4429229442651,
                  71.3808384743391,
                  1.495405249429743
                ],
                [
                  -156.4424470610032,
                  71.37649117654081,
                  1.495405249429743
                ],
                [
                  -156.45601034215613,
                  71.37632293631486,
                  0.775405249429744
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2440.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2440.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:26Z",
            "pc:count": 1693169,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89550.24151,
                "count": 1693169,
                "maximum": -89305.80952,
                "minimum": -89802.18952,
                "name": "X",
                "position": 0,
                "stddev": 136.9714401,
                "variance": 18761.17541
              },
              {
                "average": 2377105.869,
                "count": 1693169,
                "maximum": 2377340.943,
                "minimum": 2376867.703,
                "name": "Y",
                "position": 1,
                "stddev": 126.4802774,
                "variance": 15997.26056
              },
              {
                "average": 1.113083373,
                "count": 1693169,
                "maximum": 1.495405249,
                "minimum": 0.7754052494,
                "name": "Z",
                "position": 2,
                "stddev": 0.06984874549,
                "variance": 0.004878847247
              },
              {
                "average": 14843.28027,
                "count": 1693169,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 11085.29934,
                "variance": 122883861.4
              },
              {
                "average": 1,
                "count": 1693169,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1693169,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5036248597,
                "count": 1693169,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999870079,
                "variance": 0.249987008
              },
              {
                "average": 0.0005864742385,
                "count": 1693169,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02421013492,
                "variance": 0.0005861306327
              },
              {
                "average": 7.319499117,
                "count": 1693169,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.798742641,
                "variance": 7.832960368
              },
              {
                "average": -0.7024442564,
                "count": 1693169,
                "maximum": 16.33200073,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.125209031,
                "variance": 66.01902179
              },
              {
                "average": 0.4816985192,
                "count": 1693169,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996650911,
                "variance": 0.2496652033
              },
              {
                "average": 408.1433047,
                "count": 1693169,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7488007753,
                "variance": 0.5607026011
              },
              {
                "average": 220416255.6,
                "count": 1693169,
                "maximum": 220417486.1,
                "minimum": 220415221.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 448.1291621,
                "variance": 200819.7459
              },
              {
                "average": 0.4816985192,
                "count": 1693169,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996650911,
                "variance": 0.2496652033
              },
              {
                "average": 0,
                "count": 1693169,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1693169,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1693169,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08502163694,
                "count": 1693169,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2789139726,
                "variance": 0.07779300414
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89802.18952,
              2376867.703,
              0.7754052494,
              -89305.80952,
              2377340.943,
              1.495405249
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89802.18951678001,
                    2376867.703077805,
                    0.775405249429744
                  ],
                  [
                    -89802.18951678001,
                    2377340.9430778055,
                    0.775405249429744
                  ],
                  [
                    -89305.80951678,
                    2377340.9430778055,
                    1.495405249429743
                  ],
                  [
                    -89305.80951678,
                    2376867.703077805,
                    1.495405249429743
                  ],
                  [
                    -89802.18951678001,
                    2376867.703077805,
                    0.775405249429744
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:26+00:00",
            "end_time": "2018-09-08T04:13:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2423.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4182200844341,
              71.36781116432742,
              0.865135550788478
            ],
            [
              -156.41869136491889,
              71.37216101728241,
              0.865135550788478
            ],
            [
              -156.40513525106684,
              71.3723266306023,
              3.705135550788478
            ],
            [
              -156.4046666073497,
              71.36797674045768,
              3.705135550788478
            ],
            [
              -156.4182200844341,
              71.36781116432742,
              0.865135550788478
            ]
          ]
        ]
      },
      "bbox": [
        -156.4186914,
        71.36781116,
        0.8651355508,
        -156.4046666,
        71.37232663,
        3.705135551
      ],
      "properties": {
        "datetime": "2018-09-08T05:28:05Z",
        "pc:count": 1850833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88203.1423,
            "count": 1850833,
            "maximum": -87958.54307,
            "minimum": -88454.74307,
            "name": "X",
            "position": 0,
            "stddev": 132.8622903,
            "variance": 17652.38819
          },
          {
            "average": 2376136.206,
            "count": 1850833,
            "maximum": 2376365.156,
            "minimum": 2375891.616,
            "name": "Y",
            "position": 1,
            "stddev": 126.6385252,
            "variance": 16037.31605
          },
          {
            "average": 1.457652126,
            "count": 1850833,
            "maximum": 3.705135551,
            "minimum": 0.8651355508,
            "name": "Z",
            "position": 2,
            "stddev": 0.6005577172,
            "variance": 0.3606695717
          },
          {
            "average": 16600.55794,
            "count": 1850833,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10954.60272,
            "variance": 120003320.7
          },
          {
            "average": 1,
            "count": 1850833,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1850833,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5059224684,
            "count": 1850833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999650582,
            "variance": 0.2499650594
          },
          {
            "average": 0.0006499776047,
            "count": 1850833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02548637842,
            "variance": 0.0006495554847
          },
          {
            "average": 5.948482116,
            "count": 1850833,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.602550052,
            "variance": 12.97836687
          },
          {
            "average": -0.8962612732,
            "count": 1850833,
            "maximum": 16.57799911,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.663204559,
            "variance": 75.05111324
          },
          {
            "average": 0.4981654207,
            "count": 1850833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999967694,
            "variance": 0.2499967694
          },
          {
            "average": 412.5113389,
            "count": 1850833,
            "maximum": 414,
            "minimum": 411,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8373823045,
            "variance": 0.7012091239
          },
          {
            "average": 220418686.2,
            "count": 1850833,
            "maximum": 220419685.4,
            "minimum": 220417677.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 481.6933247,
            "variance": 232028.459
          },
          {
            "average": 0.4981654207,
            "count": 1850833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999967694,
            "variance": 0.2499967694
          },
          {
            "average": 0,
            "count": 1850833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1850833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1850833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.116554546,
            "count": 1850833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3208888272,
            "variance": 0.1029696394
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88454.74307,
          2375891.616,
          0.8651355508,
          -87958.54307,
          2376365.156,
          3.705135551
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88454.74307188817,
                2375891.615908388,
                0.865135550788478
              ],
              [
                -88454.74307188817,
                2376365.155908388,
                0.865135550788478
              ],
              [
                -87958.54307188815,
                2376365.155908388,
                3.705135550788478
              ],
              [
                -87958.54307188815,
                2375891.615908388,
                3.705135550788478
              ],
              [
                -88454.74307188817,
                2375891.615908388,
                0.865135550788478
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:28:05+00:00",
        "end_time": "2018-09-08T04:54:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2423.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2423.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2423.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2423.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4186914,
            71.36781116,
            0.8651355508,
            -156.4046666,
            71.37232663,
            3.705135551
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4182200844341,
                  71.36781116432742,
                  0.865135550788478
                ],
                [
                  -156.41869136491889,
                  71.37216101728241,
                  0.865135550788478
                ],
                [
                  -156.40513525106684,
                  71.3723266306023,
                  3.705135550788478
                ],
                [
                  -156.4046666073497,
                  71.36797674045768,
                  3.705135550788478
                ],
                [
                  -156.4182200844341,
                  71.36781116432742,
                  0.865135550788478
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2423.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2423.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:28:05Z",
            "pc:count": 1850833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88203.1423,
                "count": 1850833,
                "maximum": -87958.54307,
                "minimum": -88454.74307,
                "name": "X",
                "position": 0,
                "stddev": 132.8622903,
                "variance": 17652.38819
              },
              {
                "average": 2376136.206,
                "count": 1850833,
                "maximum": 2376365.156,
                "minimum": 2375891.616,
                "name": "Y",
                "position": 1,
                "stddev": 126.6385252,
                "variance": 16037.31605
              },
              {
                "average": 1.457652126,
                "count": 1850833,
                "maximum": 3.705135551,
                "minimum": 0.8651355508,
                "name": "Z",
                "position": 2,
                "stddev": 0.6005577172,
                "variance": 0.3606695717
              },
              {
                "average": 16600.55794,
                "count": 1850833,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10954.60272,
                "variance": 120003320.7
              },
              {
                "average": 1,
                "count": 1850833,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1850833,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5059224684,
                "count": 1850833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999650582,
                "variance": 0.2499650594
              },
              {
                "average": 0.0006499776047,
                "count": 1850833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02548637842,
                "variance": 0.0006495554847
              },
              {
                "average": 5.948482116,
                "count": 1850833,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.602550052,
                "variance": 12.97836687
              },
              {
                "average": -0.8962612732,
                "count": 1850833,
                "maximum": 16.57799911,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.663204559,
                "variance": 75.05111324
              },
              {
                "average": 0.4981654207,
                "count": 1850833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999967694,
                "variance": 0.2499967694
              },
              {
                "average": 412.5113389,
                "count": 1850833,
                "maximum": 414,
                "minimum": 411,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8373823045,
                "variance": 0.7012091239
              },
              {
                "average": 220418686.2,
                "count": 1850833,
                "maximum": 220419685.4,
                "minimum": 220417677.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 481.6933247,
                "variance": 232028.459
              },
              {
                "average": 0.4981654207,
                "count": 1850833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999967694,
                "variance": 0.2499967694
              },
              {
                "average": 0,
                "count": 1850833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1850833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1850833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.116554546,
                "count": 1850833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3208888272,
                "variance": 0.1029696394
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88454.74307,
              2375891.616,
              0.8651355508,
              -87958.54307,
              2376365.156,
              3.705135551
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88454.74307188817,
                    2375891.615908388,
                    0.865135550788478
                  ],
                  [
                    -88454.74307188817,
                    2376365.155908388,
                    0.865135550788478
                  ],
                  [
                    -87958.54307188815,
                    2376365.155908388,
                    3.705135550788478
                  ],
                  [
                    -87958.54307188815,
                    2375891.615908388,
                    3.705135550788478
                  ],
                  [
                    -88454.74307188817,
                    2375891.615908388,
                    0.865135550788478
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:28:05+00:00",
            "end_time": "2018-09-08T04:54:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2441.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.44319010475326,
              71.37621861132767,
              0.818962659466356
            ],
            [
              -156.44366624763995,
              71.38056700156835,
              0.818962659466356
            ],
            [
              -156.4300997486156,
              71.38073440575467,
              6.338962659466356
            ],
            [
              -156.4296262443981,
              71.3763859779166,
              6.338962659466356
            ],
            [
              -156.44319010475326,
              71.37621861132767,
              0.818962659466356
            ]
          ]
        ]
      },
      "bbox": [
        -156.4436662,
        71.37621861,
        0.8189626595,
        -156.4296262,
        71.38073441,
        6.338962659
      ],
      "properties": {
        "datetime": "2018-09-08T04:54:46Z",
        "pc:count": 2048444,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89076.93233,
            "count": 2048444,
            "maximum": -88837.65656,
            "minimum": -89334.05656,
            "name": "X",
            "position": 0,
            "stddev": 132.8464781,
            "variance": 17648.18675
          },
          {
            "average": 2377086.036,
            "count": 2048444,
            "maximum": 2377312.431,
            "minimum": 2376839.071,
            "name": "Y",
            "position": 1,
            "stddev": 126.2577824,
            "variance": 15941.02762
          },
          {
            "average": 1.422713482,
            "count": 2048444,
            "maximum": 6.338962659,
            "minimum": 0.8189626595,
            "name": "Z",
            "position": 2,
            "stddev": 0.5908748146,
            "variance": 0.3491330465
          },
          {
            "average": 17225.5075,
            "count": 2048444,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10734.27486,
            "variance": 115224656.9
          },
          {
            "average": 1.000000488,
            "count": 2048444,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0006986955096,
            "variance": 4.881754151e-07
          },
          {
            "average": 1.000000976,
            "count": 2048444,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009881044244,
            "variance": 9.763503536e-07
          },
          {
            "average": 0.5005277176,
            "count": 2048444,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998436,
            "variance": 0.2499998436
          },
          {
            "average": 0.0005189304662,
            "count": 2048444,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02277413951,
            "variance": 0.0005186614306
          },
          {
            "average": 5.849775244,
            "count": 2048444,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.631190269,
            "variance": 13.18554277
          },
          {
            "average": 0.3225325975,
            "count": 2048444,
            "maximum": 16.33799934,
            "minimum": -16.36199951,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.429040044,
            "variance": 71.04871607
          },
          {
            "average": 0.4873411233,
            "count": 2048444,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998398492,
            "variance": 0.2498398748
          },
          {
            "average": 409.0074906,
            "count": 2048444,
            "maximum": 411,
            "minimum": 407,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7583423737,
            "variance": 0.5750831557
          },
          {
            "average": 220416738.8,
            "count": 2048444,
            "maximum": 220417686.8,
            "minimum": 220415416.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 472.1981328,
            "variance": 222971.0766
          },
          {
            "average": 0.4873411233,
            "count": 2048444,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998398492,
            "variance": 0.2498398748
          },
          {
            "average": 0,
            "count": 2048444,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2048444,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2048444,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1077193226,
            "count": 2048444,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3100256716,
            "variance": 0.09611591704
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89334.05656,
          2376839.071,
          0.8189626595,
          -88837.65656,
          2377312.431,
          6.338962659
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89334.05656294775,
                2376839.071073833,
                0.818962659466356
              ],
              [
                -89334.05656294775,
                2377312.4310738333,
                0.818962659466356
              ],
              [
                -88837.65656294776,
                2377312.4310738333,
                6.338962659466356
              ],
              [
                -88837.65656294776,
                2376839.071073833,
                6.338962659466356
              ],
              [
                -89334.05656294775,
                2376839.071073833,
                0.818962659466356
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:54:46+00:00",
        "end_time": "2018-09-08T04:16:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2441.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2441.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2441.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2441.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4436662,
            71.37621861,
            0.8189626595,
            -156.4296262,
            71.38073441,
            6.338962659
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.44319010475326,
                  71.37621861132767,
                  0.818962659466356
                ],
                [
                  -156.44366624763995,
                  71.38056700156835,
                  0.818962659466356
                ],
                [
                  -156.4300997486156,
                  71.38073440575467,
                  6.338962659466356
                ],
                [
                  -156.4296262443981,
                  71.3763859779166,
                  6.338962659466356
                ],
                [
                  -156.44319010475326,
                  71.37621861132767,
                  0.818962659466356
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2441.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2441.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:54:46Z",
            "pc:count": 2048444,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89076.93233,
                "count": 2048444,
                "maximum": -88837.65656,
                "minimum": -89334.05656,
                "name": "X",
                "position": 0,
                "stddev": 132.8464781,
                "variance": 17648.18675
              },
              {
                "average": 2377086.036,
                "count": 2048444,
                "maximum": 2377312.431,
                "minimum": 2376839.071,
                "name": "Y",
                "position": 1,
                "stddev": 126.2577824,
                "variance": 15941.02762
              },
              {
                "average": 1.422713482,
                "count": 2048444,
                "maximum": 6.338962659,
                "minimum": 0.8189626595,
                "name": "Z",
                "position": 2,
                "stddev": 0.5908748146,
                "variance": 0.3491330465
              },
              {
                "average": 17225.5075,
                "count": 2048444,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10734.27486,
                "variance": 115224656.9
              },
              {
                "average": 1.000000488,
                "count": 2048444,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0006986955096,
                "variance": 4.881754151e-07
              },
              {
                "average": 1.000000976,
                "count": 2048444,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009881044244,
                "variance": 9.763503536e-07
              },
              {
                "average": 0.5005277176,
                "count": 2048444,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998436,
                "variance": 0.2499998436
              },
              {
                "average": 0.0005189304662,
                "count": 2048444,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02277413951,
                "variance": 0.0005186614306
              },
              {
                "average": 5.849775244,
                "count": 2048444,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.631190269,
                "variance": 13.18554277
              },
              {
                "average": 0.3225325975,
                "count": 2048444,
                "maximum": 16.33799934,
                "minimum": -16.36199951,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.429040044,
                "variance": 71.04871607
              },
              {
                "average": 0.4873411233,
                "count": 2048444,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998398492,
                "variance": 0.2498398748
              },
              {
                "average": 409.0074906,
                "count": 2048444,
                "maximum": 411,
                "minimum": 407,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7583423737,
                "variance": 0.5750831557
              },
              {
                "average": 220416738.8,
                "count": 2048444,
                "maximum": 220417686.8,
                "minimum": 220415416.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 472.1981328,
                "variance": 222971.0766
              },
              {
                "average": 0.4873411233,
                "count": 2048444,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998398492,
                "variance": 0.2498398748
              },
              {
                "average": 0,
                "count": 2048444,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2048444,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2048444,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1077193226,
                "count": 2048444,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3100256716,
                "variance": 0.09611591704
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89334.05656,
              2376839.071,
              0.8189626595,
              -88837.65656,
              2377312.431,
              6.338962659
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89334.05656294775,
                    2376839.071073833,
                    0.818962659466356
                  ],
                  [
                    -89334.05656294775,
                    2377312.4310738333,
                    0.818962659466356
                  ],
                  [
                    -88837.65656294776,
                    2377312.4310738333,
                    6.338962659466356
                  ],
                  [
                    -88837.65656294776,
                    2376839.071073833,
                    6.338962659466356
                  ],
                  [
                    -89334.05656294775,
                    2376839.071073833,
                    0.818962659466356
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:54:46+00:00",
            "end_time": "2018-09-08T04:16:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2424.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.4054129680161,
              71.36770477775748,
              0.871718859197973
            ],
            [
              -156.40588161279692,
              71.37205337198465,
              0.871718859197973
            ],
            [
              -156.392406337356,
              71.3722171260516,
              43.07171885919797
            ],
            [
              -156.3919403128865,
              71.36786849506322,
              43.07171885919797
            ],
            [
              -156.4054129680161,
              71.36770477775748,
              0.871718859197973
            ]
          ]
        ]
      },
      "bbox": [
        -156.4058816,
        71.36770478,
        0.8717188592,
        -156.3919403,
        71.37221713,
        43.07171886
      ],
      "properties": {
        "datetime": "2018-09-08T05:30:54Z",
        "pc:count": 1697072,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87743.91691,
            "count": 1697072,
            "maximum": -87493.66315,
            "minimum": -87986.90315,
            "name": "X",
            "position": 0,
            "stddev": 135.5329803,
            "variance": 18369.18875
          },
          {
            "average": 2376087.126,
            "count": 1697072,
            "maximum": 2376336.436,
            "minimum": 2375863.036,
            "name": "Y",
            "position": 1,
            "stddev": 128.1175294,
            "variance": 16414.10134
          },
          {
            "average": 1.31490292,
            "count": 1697072,
            "maximum": 43.07171886,
            "minimum": 0.8717188592,
            "name": "Z",
            "position": 2,
            "stddev": 0.4919739658,
            "variance": 0.242038383
          },
          {
            "average": 19222.27133,
            "count": 1697072,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12680.04797,
            "variance": 160783616.5
          },
          {
            "average": 1.000009428,
            "count": 1697072,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003070491772,
            "variance": 9.427919723e-06
          },
          {
            "average": 1.000012964,
            "count": 1697072,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003600464385,
            "variance": 1.296334379e-05
          },
          {
            "average": 0.4926131596,
            "count": 1697072,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999455789,
            "variance": 0.2499455819
          },
          {
            "average": 0.0006682097165,
            "count": 1697072,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02584112238,
            "variance": 0.0006677636058
          },
          {
            "average": 7.089630847,
            "count": 1697072,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.024295343,
            "variance": 9.146362322
          },
          {
            "average": 2.68277681,
            "count": 1697072,
            "maximum": 16.24799919,
            "minimum": -16.02000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.114474221,
            "variance": 50.61574345
          },
          {
            "average": 0.4742067514,
            "count": 1697072,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993344122,
            "variance": 0.2493348552
          },
          {
            "average": 413.4020654,
            "count": 1697072,
            "maximum": 415,
            "minimum": 412,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6997264881,
            "variance": 0.4896171582
          },
          {
            "average": 220419172,
            "count": 1697072,
            "maximum": 220419854.9,
            "minimum": 220418599.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 473.664558,
            "variance": 224358.1135
          },
          {
            "average": 0.4742067514,
            "count": 1697072,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993344122,
            "variance": 0.2493348552
          },
          {
            "average": 0,
            "count": 1697072,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1697072,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1697072,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06234443795,
            "count": 1697072,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2417801552,
            "variance": 0.05845764345
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87986.90315,
          2375863.036,
          0.8717188592,
          -87493.66315,
          2376336.436,
          43.07171886
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87986.90314648536,
                2375863.036386515,
                0.871718859197973
              ],
              [
                -87986.90314648536,
                2376336.4363865154,
                0.871718859197973
              ],
              [
                -87493.66314648537,
                2376336.4363865154,
                43.07171885919797
              ],
              [
                -87493.66314648537,
                2375863.036386515,
                43.07171885919797
              ],
              [
                -87986.90314648536,
                2375863.036386515,
                0.871718859197973
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:30:54+00:00",
        "end_time": "2018-09-08T05:09:59+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2424.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2424.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2424.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2424.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4058816,
            71.36770478,
            0.8717188592,
            -156.3919403,
            71.37221713,
            43.07171886
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.4054129680161,
                  71.36770477775748,
                  0.871718859197973
                ],
                [
                  -156.40588161279692,
                  71.37205337198465,
                  0.871718859197973
                ],
                [
                  -156.392406337356,
                  71.3722171260516,
                  43.07171885919797
                ],
                [
                  -156.3919403128865,
                  71.36786849506322,
                  43.07171885919797
                ],
                [
                  -156.4054129680161,
                  71.36770477775748,
                  0.871718859197973
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2424.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2424.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:30:54Z",
            "pc:count": 1697072,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87743.91691,
                "count": 1697072,
                "maximum": -87493.66315,
                "minimum": -87986.90315,
                "name": "X",
                "position": 0,
                "stddev": 135.5329803,
                "variance": 18369.18875
              },
              {
                "average": 2376087.126,
                "count": 1697072,
                "maximum": 2376336.436,
                "minimum": 2375863.036,
                "name": "Y",
                "position": 1,
                "stddev": 128.1175294,
                "variance": 16414.10134
              },
              {
                "average": 1.31490292,
                "count": 1697072,
                "maximum": 43.07171886,
                "minimum": 0.8717188592,
                "name": "Z",
                "position": 2,
                "stddev": 0.4919739658,
                "variance": 0.242038383
              },
              {
                "average": 19222.27133,
                "count": 1697072,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12680.04797,
                "variance": 160783616.5
              },
              {
                "average": 1.000009428,
                "count": 1697072,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003070491772,
                "variance": 9.427919723e-06
              },
              {
                "average": 1.000012964,
                "count": 1697072,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003600464385,
                "variance": 1.296334379e-05
              },
              {
                "average": 0.4926131596,
                "count": 1697072,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999455789,
                "variance": 0.2499455819
              },
              {
                "average": 0.0006682097165,
                "count": 1697072,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02584112238,
                "variance": 0.0006677636058
              },
              {
                "average": 7.089630847,
                "count": 1697072,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.024295343,
                "variance": 9.146362322
              },
              {
                "average": 2.68277681,
                "count": 1697072,
                "maximum": 16.24799919,
                "minimum": -16.02000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.114474221,
                "variance": 50.61574345
              },
              {
                "average": 0.4742067514,
                "count": 1697072,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993344122,
                "variance": 0.2493348552
              },
              {
                "average": 413.4020654,
                "count": 1697072,
                "maximum": 415,
                "minimum": 412,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6997264881,
                "variance": 0.4896171582
              },
              {
                "average": 220419172,
                "count": 1697072,
                "maximum": 220419854.9,
                "minimum": 220418599.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 473.664558,
                "variance": 224358.1135
              },
              {
                "average": 0.4742067514,
                "count": 1697072,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993344122,
                "variance": 0.2493348552
              },
              {
                "average": 0,
                "count": 1697072,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1697072,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1697072,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06234443795,
                "count": 1697072,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2417801552,
                "variance": 0.05845764345
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87986.90315,
              2375863.036,
              0.8717188592,
              -87493.66315,
              2376336.436,
              43.07171886
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87986.90314648536,
                    2375863.036386515,
                    0.871718859197973
                  ],
                  [
                    -87986.90314648536,
                    2376336.4363865154,
                    0.871718859197973
                  ],
                  [
                    -87493.66314648537,
                    2376336.4363865154,
                    43.07171885919797
                  ],
                  [
                    -87493.66314648537,
                    2375863.036386515,
                    43.07171885919797
                  ],
                  [
                    -87986.90314648536,
                    2375863.036386515,
                    0.871718859197973
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:30:54+00:00",
            "end_time": "2018-09-08T05:09:59+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2442.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.43037013008197,
              71.3761110788861,
              0.835061517860963
            ],
            [
              -156.43084387345525,
              71.3804604153806,
              0.835061517860963
            ],
            [
              -156.41782066456898,
              71.38062028789714,
              3.735061517860963
            ],
            [
              -156.41734945477072,
              71.37627091548917,
              3.735061517860963
            ],
            [
              -156.43037013008197,
              71.3761110788861,
              0.835061517860963
            ]
          ]
        ]
      },
      "bbox": [
        -156.4308439,
        71.37611108,
        0.8350615179,
        -156.4173495,
        71.38062029,
        3.735061518
      ],
      "properties": {
        "datetime": "2018-09-08T05:10:07Z",
        "pc:count": 1454875,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88679.29458,
            "count": 1454875,
            "maximum": -88389.41827,
            "minimum": -88865.93827,
            "name": "X",
            "position": 0,
            "stddev": 118.5926032,
            "variance": 14064.20553
          },
          {
            "average": 2377001.27,
            "count": 1454875,
            "maximum": 2377283.641,
            "minimum": 2376810.181,
            "name": "Y",
            "position": 1,
            "stddev": 119.3272718,
            "variance": 14238.99779
          },
          {
            "average": 1.307396385,
            "count": 1454875,
            "maximum": 3.735061518,
            "minimum": 0.8350615179,
            "name": "Z",
            "position": 2,
            "stddev": 0.4724504693,
            "variance": 0.2232094459
          },
          {
            "average": 16467.26,
            "count": 1454875,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10812.00336,
            "variance": 116899416.7
          },
          {
            "average": 1,
            "count": 1454875,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1454875,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4966880316,
            "count": 1454875,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999892026,
            "variance": 0.2499892027
          },
          {
            "average": 0.0005759945012,
            "count": 1454875,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02399298079,
            "variance": 0.0005756631273
          },
          {
            "average": 6.733410087,
            "count": 1454875,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.269453923,
            "variance": 10.68932895
          },
          {
            "average": 1.277153169,
            "count": 1454875,
            "maximum": 16.48800087,
            "minimum": -15.79800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.051186256,
            "variance": 64.82160013
          },
          {
            "average": 0.4796934445,
            "count": 1454875,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995876453,
            "variance": 0.2495878154
          },
          {
            "average": 409.8285976,
            "count": 1454875,
            "maximum": 412,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7640460759,
            "variance": 0.5837664061
          },
          {
            "average": 220417187.1,
            "count": 1454875,
            "maximum": 220418607.2,
            "minimum": 220416353.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 492.2488241,
            "variance": 242308.9049
          },
          {
            "average": 0.4796934445,
            "count": 1454875,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995876453,
            "variance": 0.2495878154
          },
          {
            "average": 0,
            "count": 1454875,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1454875,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1454875,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06670676175,
            "count": 1454875,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2495135517,
            "variance": 0.06225701248
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88865.93827,
          2376810.181,
          0.8350615179,
          -88389.41827,
          2377283.641,
          3.735061518
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88865.93827041441,
                2376810.1810088404,
                0.835061517860963
              ],
              [
                -88865.93827041441,
                2377283.6410088404,
                0.835061517860963
              ],
              [
                -88389.41827041442,
                2377283.6410088404,
                3.735061517860963
              ],
              [
                -88389.41827041442,
                2376810.1810088404,
                3.735061517860963
              ],
              [
                -88865.93827041441,
                2376810.1810088404,
                0.835061517860963
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:10:07+00:00",
        "end_time": "2018-09-08T04:32:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2442.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2442.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2442.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2442.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4308439,
            71.37611108,
            0.8350615179,
            -156.4173495,
            71.38062029,
            3.735061518
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.43037013008197,
                  71.3761110788861,
                  0.835061517860963
                ],
                [
                  -156.43084387345525,
                  71.3804604153806,
                  0.835061517860963
                ],
                [
                  -156.41782066456898,
                  71.38062028789714,
                  3.735061517860963
                ],
                [
                  -156.41734945477072,
                  71.37627091548917,
                  3.735061517860963
                ],
                [
                  -156.43037013008197,
                  71.3761110788861,
                  0.835061517860963
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2442.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2442.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:10:07Z",
            "pc:count": 1454875,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88679.29458,
                "count": 1454875,
                "maximum": -88389.41827,
                "minimum": -88865.93827,
                "name": "X",
                "position": 0,
                "stddev": 118.5926032,
                "variance": 14064.20553
              },
              {
                "average": 2377001.27,
                "count": 1454875,
                "maximum": 2377283.641,
                "minimum": 2376810.181,
                "name": "Y",
                "position": 1,
                "stddev": 119.3272718,
                "variance": 14238.99779
              },
              {
                "average": 1.307396385,
                "count": 1454875,
                "maximum": 3.735061518,
                "minimum": 0.8350615179,
                "name": "Z",
                "position": 2,
                "stddev": 0.4724504693,
                "variance": 0.2232094459
              },
              {
                "average": 16467.26,
                "count": 1454875,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10812.00336,
                "variance": 116899416.7
              },
              {
                "average": 1,
                "count": 1454875,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1454875,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4966880316,
                "count": 1454875,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999892026,
                "variance": 0.2499892027
              },
              {
                "average": 0.0005759945012,
                "count": 1454875,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02399298079,
                "variance": 0.0005756631273
              },
              {
                "average": 6.733410087,
                "count": 1454875,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.269453923,
                "variance": 10.68932895
              },
              {
                "average": 1.277153169,
                "count": 1454875,
                "maximum": 16.48800087,
                "minimum": -15.79800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.051186256,
                "variance": 64.82160013
              },
              {
                "average": 0.4796934445,
                "count": 1454875,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995876453,
                "variance": 0.2495878154
              },
              {
                "average": 409.8285976,
                "count": 1454875,
                "maximum": 412,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7640460759,
                "variance": 0.5837664061
              },
              {
                "average": 220417187.1,
                "count": 1454875,
                "maximum": 220418607.2,
                "minimum": 220416353.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 492.2488241,
                "variance": 242308.9049
              },
              {
                "average": 0.4796934445,
                "count": 1454875,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995876453,
                "variance": 0.2495878154
              },
              {
                "average": 0,
                "count": 1454875,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1454875,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1454875,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06670676175,
                "count": 1454875,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2495135517,
                "variance": 0.06225701248
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88865.93827,
              2376810.181,
              0.8350615179,
              -88389.41827,
              2377283.641,
              3.735061518
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88865.93827041441,
                    2376810.1810088404,
                    0.835061517860963
                  ],
                  [
                    -88865.93827041441,
                    2377283.6410088404,
                    0.835061517860963
                  ],
                  [
                    -88389.41827041442,
                    2377283.6410088404,
                    3.735061517860963
                  ],
                  [
                    -88389.41827041442,
                    2376810.1810088404,
                    3.735061517860963
                  ],
                  [
                    -88865.93827041441,
                    2376810.1810088404,
                    0.835061517860963
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:10:07+00:00",
            "end_time": "2018-09-08T04:32:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2425.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.39259623047678,
              71.36759674970644,
              0.883022213583491
            ],
            [
              -156.39301266182133,
              71.37148165896468,
              0.883022213583491
            ],
            [
              -156.38009714288947,
              71.37163778988655,
              1.483022213583491
            ],
            [
              -156.37968295523976,
              71.36775284931598,
              1.483022213583491
            ],
            [
              -156.39259623047678,
              71.36759674970644,
              0.883022213583491
            ]
          ]
        ]
      },
      "bbox": [
        -156.3930127,
        71.36759675,
        0.8830222136,
        -156.379683,
        71.37163779,
        1.483022214
      ],
      "properties": {
        "datetime": "2018-09-08T05:46:28Z",
        "pc:count": 756806,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87344.1397,
            "count": 756806,
            "maximum": -87045.95014,
            "minimum": -87518.71014,
            "name": "X",
            "position": 0,
            "stddev": 116.5715171,
            "variance": 13588.9186
          },
          {
            "average": 2375997.194,
            "count": 756806,
            "maximum": 2376257.276,
            "minimum": 2375834.356,
            "name": "Y",
            "position": 1,
            "stddev": 98.81752341,
            "variance": 9764.902932
          },
          {
            "average": 1.155632764,
            "count": 756806,
            "maximum": 1.483022214,
            "minimum": 0.8830222136,
            "name": "Z",
            "position": 2,
            "stddev": 0.05822967977,
            "variance": 0.003390695606
          },
          {
            "average": 15487.03811,
            "count": 756806,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12184.20197,
            "variance": 148454777.6
          },
          {
            "average": 1,
            "count": 756806,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 756806,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5036799391,
            "count": 756806,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999867882,
            "variance": 0.2499867884
          },
          {
            "average": 0.0008456592575,
            "count": 756806,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02906794169,
            "variance": 0.0008449452343
          },
          {
            "average": 7.723469423,
            "count": 756806,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.382434758,
            "variance": 5.675995376
          },
          {
            "average": -0.6385170941,
            "count": 756806,
            "maximum": 16.32600021,
            "minimum": -15.73200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.650647904,
            "variance": 58.53241335
          },
          {
            "average": 0.4738796997,
            "count": 756806,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993175937,
            "variance": 0.2493180593
          },
          {
            "average": 414.2052124,
            "count": 756806,
            "maximum": 416,
            "minimum": 413,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7665599034,
            "variance": 0.5876140855
          },
          {
            "average": 220419607.7,
            "count": 756806,
            "maximum": 220420788.2,
            "minimum": 220418773.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 435.547901,
            "variance": 189701.9741
          },
          {
            "average": 0.4738796997,
            "count": 756806,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993175937,
            "variance": 0.2493180593
          },
          {
            "average": 0,
            "count": 756806,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 756806,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 756806,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05954762515,
            "count": 756806,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2366469511,
            "variance": 0.05600177949
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87518.71014,
          2375834.356,
          0.8830222136,
          -87045.95014,
          2376257.276,
          1.483022214
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87518.71014203272,
                2375834.355852347,
                0.883022213583491
              ],
              [
                -87518.71014203272,
                2376257.275852347,
                0.883022213583491
              ],
              [
                -87045.95014203271,
                2376257.275852347,
                1.483022213583491
              ],
              [
                -87045.95014203271,
                2375834.355852347,
                1.483022213583491
              ],
              [
                -87518.71014203272,
                2375834.355852347,
                0.883022213583491
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:46:28+00:00",
        "end_time": "2018-09-08T05:12:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2425.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2425.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2425.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2425.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3930127,
            71.36759675,
            0.8830222136,
            -156.379683,
            71.37163779,
            1.483022214
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.39259623047678,
                  71.36759674970644,
                  0.883022213583491
                ],
                [
                  -156.39301266182133,
                  71.37148165896468,
                  0.883022213583491
                ],
                [
                  -156.38009714288947,
                  71.37163778988655,
                  1.483022213583491
                ],
                [
                  -156.37968295523976,
                  71.36775284931598,
                  1.483022213583491
                ],
                [
                  -156.39259623047678,
                  71.36759674970644,
                  0.883022213583491
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2425.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2425.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:46:28Z",
            "pc:count": 756806,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87344.1397,
                "count": 756806,
                "maximum": -87045.95014,
                "minimum": -87518.71014,
                "name": "X",
                "position": 0,
                "stddev": 116.5715171,
                "variance": 13588.9186
              },
              {
                "average": 2375997.194,
                "count": 756806,
                "maximum": 2376257.276,
                "minimum": 2375834.356,
                "name": "Y",
                "position": 1,
                "stddev": 98.81752341,
                "variance": 9764.902932
              },
              {
                "average": 1.155632764,
                "count": 756806,
                "maximum": 1.483022214,
                "minimum": 0.8830222136,
                "name": "Z",
                "position": 2,
                "stddev": 0.05822967977,
                "variance": 0.003390695606
              },
              {
                "average": 15487.03811,
                "count": 756806,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12184.20197,
                "variance": 148454777.6
              },
              {
                "average": 1,
                "count": 756806,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 756806,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5036799391,
                "count": 756806,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999867882,
                "variance": 0.2499867884
              },
              {
                "average": 0.0008456592575,
                "count": 756806,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02906794169,
                "variance": 0.0008449452343
              },
              {
                "average": 7.723469423,
                "count": 756806,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.382434758,
                "variance": 5.675995376
              },
              {
                "average": -0.6385170941,
                "count": 756806,
                "maximum": 16.32600021,
                "minimum": -15.73200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.650647904,
                "variance": 58.53241335
              },
              {
                "average": 0.4738796997,
                "count": 756806,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993175937,
                "variance": 0.2493180593
              },
              {
                "average": 414.2052124,
                "count": 756806,
                "maximum": 416,
                "minimum": 413,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7665599034,
                "variance": 0.5876140855
              },
              {
                "average": 220419607.7,
                "count": 756806,
                "maximum": 220420788.2,
                "minimum": 220418773.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 435.547901,
                "variance": 189701.9741
              },
              {
                "average": 0.4738796997,
                "count": 756806,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993175937,
                "variance": 0.2493180593
              },
              {
                "average": 0,
                "count": 756806,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 756806,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 756806,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05954762515,
                "count": 756806,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2366469511,
                "variance": 0.05600177949
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87518.71014,
              2375834.356,
              0.8830222136,
              -87045.95014,
              2376257.276,
              1.483022214
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87518.71014203272,
                    2375834.355852347,
                    0.883022213583491
                  ],
                  [
                    -87518.71014203272,
                    2376257.275852347,
                    0.883022213583491
                  ],
                  [
                    -87045.95014203271,
                    2376257.275852347,
                    1.483022213583491
                  ],
                  [
                    -87045.95014203271,
                    2375834.355852347,
                    1.483022213583491
                  ],
                  [
                    -87518.71014203272,
                    2375834.355852347,
                    0.883022213583491
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:46:28+00:00",
            "end_time": "2018-09-08T05:12:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2443.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.41757142668223,
              71.37615538670832,
              0.924974936533687
            ],
            [
              -156.41771803953887,
              71.3775087057405,
              0.924974936533687
            ],
            [
              -156.41222108167554,
              71.3775759330346,
              17.984974936533686
            ],
            [
              -156.41207480157274,
              71.37622260930348,
              17.984974936533686
            ],
            [
              -156.41757142668223,
              71.37615538670832,
              0.924974936533687
            ]
          ]
        ]
      },
      "bbox": [
        -156.417718,
        71.37615539,
        0.9249749365,
        -156.4120748,
        71.37757593,
        17.98497494
      ],
      "properties": {
        "datetime": "2018-09-08T05:10:08Z",
        "pc:count": 102824,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88327.90328,
            "count": 102824,
            "maximum": -88196.82841,
            "minimum": -88397.98841,
            "name": "X",
            "position": 0,
            "stddev": 46.58523547,
            "variance": 2170.184164
          },
          {
            "average": 2376850.22,
            "count": 102824,
            "maximum": 2376945.237,
            "minimum": 2376797.917,
            "name": "Y",
            "position": 1,
            "stddev": 33.19945087,
            "variance": 1102.203538
          },
          {
            "average": 1.172328375,
            "count": 102824,
            "maximum": 17.98497494,
            "minimum": 0.9249749365,
            "name": "Z",
            "position": 2,
            "stddev": 0.1017760306,
            "variance": 0.0103583604
          },
          {
            "average": 17272.88369,
            "count": 102824,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12746.43864,
            "variance": 162471698.1
          },
          {
            "average": 1.000009725,
            "count": 102824,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003118550296,
            "variance": 9.725355948e-06
          },
          {
            "average": 1.000019451,
            "count": 102824,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.004410274677,
            "variance": 1.945052273e-05
          },
          {
            "average": 0.5070022563,
            "count": 102824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999533971,
            "variance": 0.2499533993
          },
          {
            "average": 0.0008558313234,
            "count": 102824,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02924221593,
            "variance": 0.0008551071924
          },
          {
            "average": 7.512137244,
            "count": 102824,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.647187917,
            "variance": 7.00760387
          },
          {
            "average": -1.395792129,
            "count": 102824,
            "maximum": 16.22999954,
            "minimum": -14.44799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.635916189,
            "variance": 58.30721604
          },
          {
            "average": 0.475764413,
            "count": 102824,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994147194,
            "variance": 0.249415062
          },
          {
            "average": 410.9179472,
            "count": 102824,
            "maximum": 412,
            "minimum": 409,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6372467863,
            "variance": 0.4060834666
          },
          {
            "average": 220417785.4,
            "count": 102824,
            "maximum": 220418608.2,
            "minimum": 220416555.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 373.7744569,
            "variance": 139707.3446
          },
          {
            "average": 0.475764413,
            "count": 102824,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994147194,
            "variance": 0.249415062
          },
          {
            "average": 0,
            "count": 102824,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 102824,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 102824,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09625184782,
            "count": 102824,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2949377487,
            "variance": 0.0869882756
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88397.98841,
          2376797.917,
          0.9249749365,
          -88196.82841,
          2376945.237,
          17.98497494
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88397.98841265508,
                2376797.9167945245,
                0.924974936533687
              ],
              [
                -88397.98841265508,
                2376945.236794525,
                0.924974936533687
              ],
              [
                -88196.82841265507,
                2376945.236794525,
                17.984974936533686
              ],
              [
                -88196.82841265507,
                2376797.9167945245,
                17.984974936533686
              ],
              [
                -88397.98841265508,
                2376797.9167945245,
                0.924974936533687
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:10:08+00:00",
        "end_time": "2018-09-08T04:35:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2443.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2443.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2443.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2443.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.417718,
            71.37615539,
            0.9249749365,
            -156.4120748,
            71.37757593,
            17.98497494
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.41757142668223,
                  71.37615538670832,
                  0.924974936533687
                ],
                [
                  -156.41771803953887,
                  71.3775087057405,
                  0.924974936533687
                ],
                [
                  -156.41222108167554,
                  71.3775759330346,
                  17.984974936533686
                ],
                [
                  -156.41207480157274,
                  71.37622260930348,
                  17.984974936533686
                ],
                [
                  -156.41757142668223,
                  71.37615538670832,
                  0.924974936533687
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2443.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2443.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:10:08Z",
            "pc:count": 102824,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88327.90328,
                "count": 102824,
                "maximum": -88196.82841,
                "minimum": -88397.98841,
                "name": "X",
                "position": 0,
                "stddev": 46.58523547,
                "variance": 2170.184164
              },
              {
                "average": 2376850.22,
                "count": 102824,
                "maximum": 2376945.237,
                "minimum": 2376797.917,
                "name": "Y",
                "position": 1,
                "stddev": 33.19945087,
                "variance": 1102.203538
              },
              {
                "average": 1.172328375,
                "count": 102824,
                "maximum": 17.98497494,
                "minimum": 0.9249749365,
                "name": "Z",
                "position": 2,
                "stddev": 0.1017760306,
                "variance": 0.0103583604
              },
              {
                "average": 17272.88369,
                "count": 102824,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12746.43864,
                "variance": 162471698.1
              },
              {
                "average": 1.000009725,
                "count": 102824,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003118550296,
                "variance": 9.725355948e-06
              },
              {
                "average": 1.000019451,
                "count": 102824,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.004410274677,
                "variance": 1.945052273e-05
              },
              {
                "average": 0.5070022563,
                "count": 102824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999533971,
                "variance": 0.2499533993
              },
              {
                "average": 0.0008558313234,
                "count": 102824,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02924221593,
                "variance": 0.0008551071924
              },
              {
                "average": 7.512137244,
                "count": 102824,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.647187917,
                "variance": 7.00760387
              },
              {
                "average": -1.395792129,
                "count": 102824,
                "maximum": 16.22999954,
                "minimum": -14.44799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.635916189,
                "variance": 58.30721604
              },
              {
                "average": 0.475764413,
                "count": 102824,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994147194,
                "variance": 0.249415062
              },
              {
                "average": 410.9179472,
                "count": 102824,
                "maximum": 412,
                "minimum": 409,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6372467863,
                "variance": 0.4060834666
              },
              {
                "average": 220417785.4,
                "count": 102824,
                "maximum": 220418608.2,
                "minimum": 220416555.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 373.7744569,
                "variance": 139707.3446
              },
              {
                "average": 0.475764413,
                "count": 102824,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994147194,
                "variance": 0.249415062
              },
              {
                "average": 0,
                "count": 102824,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 102824,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 102824,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09625184782,
                "count": 102824,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2949377487,
                "variance": 0.0869882756
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88397.98841,
              2376797.917,
              0.9249749365,
              -88196.82841,
              2376945.237,
              17.98497494
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88397.98841265508,
                    2376797.9167945245,
                    0.924974936533687
                  ],
                  [
                    -88397.98841265508,
                    2376945.236794525,
                    0.924974936533687
                  ],
                  [
                    -88196.82841265507,
                    2376945.236794525,
                    17.984974936533686
                  ],
                  [
                    -88196.82841265507,
                    2376797.9167945245,
                    17.984974936533686
                  ],
                  [
                    -88397.98841265508,
                    2376797.9167945245,
                    0.924974936533687
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:10:08+00:00",
            "end_time": "2018-09-08T04:35:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2426.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.37980614065938,
              71.36768470314598,
              0.982981575710704
            ],
            [
              -156.37989012234905,
              71.36847248528322,
              0.982981575710704
            ],
            [
              -156.37668871436398,
              71.36851105625695,
              1.402981575710704
            ],
            [
              -156.37660484545265,
              71.36772327255112,
              1.402981575710704
            ],
            [
              -156.37980614065938,
              71.36768470314598,
              0.982981575710704
            ]
          ]
        ]
      },
      "bbox": [
        -156.3798901,
        71.3676847,
        0.9829815757,
        -156.3766048,
        71.36851106,
        1.402981576
      ],
      "properties": {
        "datetime": "2018-09-08T05:46:28Z",
        "pc:count": 26891,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -87007.27836,
            "count": 26891,
            "maximum": -86933.5198,
            "minimum": -87050.7198,
            "name": "X",
            "position": 0,
            "stddev": 28.1939122,
            "variance": 794.8966852
          },
          {
            "average": 2375856.649,
            "count": 26891,
            "maximum": 2375912.868,
            "minimum": 2375827.108,
            "name": "Y",
            "position": 1,
            "stddev": 19.28799619,
            "variance": 372.0267971
          },
          {
            "average": 1.168488251,
            "count": 26891,
            "maximum": 1.402981576,
            "minimum": 0.9829815757,
            "name": "Z",
            "position": 2,
            "stddev": 0.05335810228,
            "variance": 0.002847087079
          },
          {
            "average": 21783.31769,
            "count": 26891,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 16090.70752,
            "variance": 258910868.3
          },
          {
            "average": 1,
            "count": 26891,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 26891,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4880443271,
            "count": 26891,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998663358,
            "variance": 0.2498663537
          },
          {
            "average": 0.0007437432598,
            "count": 26891,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02726202017,
            "variance": 0.0007432177439
          },
          {
            "average": 8.286527091,
            "count": 26891,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.448397234,
            "variance": 2.097854547
          },
          {
            "average": 4.549507418,
            "count": 26891,
            "maximum": 13.57800007,
            "minimum": -15.64799976,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.797323657,
            "variance": 33.60896158
          },
          {
            "average": 0.4779666059,
            "count": 26891,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995235817,
            "variance": 0.2495238086
          },
          {
            "average": 415.3612733,
            "count": 26891,
            "maximum": 416,
            "minimum": 414,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5594859646,
            "variance": 0.3130245445
          },
          {
            "average": 220420217.3,
            "count": 26891,
            "maximum": 220420788.5,
            "minimum": 220419690.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 469.1986184,
            "variance": 220147.3435
          },
          {
            "average": 0.4779666059,
            "count": 26891,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995235817,
            "variance": 0.2495238086
          },
          {
            "average": 0,
            "count": 26891,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 26891,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 26891,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.004945892678,
            "count": 26891,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.07015421473,
            "variance": 0.004921613844
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -87050.7198,
          2375827.108,
          0.9829815757,
          -86933.5198,
          2375912.868,
          1.402981576
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -87050.7198019129,
                2375827.1082533337,
                0.982981575710704
              ],
              [
                -87050.7198019129,
                2375912.8682533335,
                0.982981575710704
              ],
              [
                -86933.51980191289,
                2375912.8682533335,
                1.402981575710704
              ],
              [
                -86933.51980191289,
                2375827.1082533337,
                1.402981575710704
              ],
              [
                -87050.7198019129,
                2375827.1082533337,
                0.982981575710704
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T05:46:28+00:00",
        "end_time": "2018-09-08T05:28:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2426.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2426.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2426.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2426.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.3798901,
            71.3676847,
            0.9829815757,
            -156.3766048,
            71.36851106,
            1.402981576
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.37980614065938,
                  71.36768470314598,
                  0.982981575710704
                ],
                [
                  -156.37989012234905,
                  71.36847248528322,
                  0.982981575710704
                ],
                [
                  -156.37668871436398,
                  71.36851105625695,
                  1.402981575710704
                ],
                [
                  -156.37660484545265,
                  71.36772327255112,
                  1.402981575710704
                ],
                [
                  -156.37980614065938,
                  71.36768470314598,
                  0.982981575710704
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2426.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2426.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T05:46:28Z",
            "pc:count": 26891,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -87007.27836,
                "count": 26891,
                "maximum": -86933.5198,
                "minimum": -87050.7198,
                "name": "X",
                "position": 0,
                "stddev": 28.1939122,
                "variance": 794.8966852
              },
              {
                "average": 2375856.649,
                "count": 26891,
                "maximum": 2375912.868,
                "minimum": 2375827.108,
                "name": "Y",
                "position": 1,
                "stddev": 19.28799619,
                "variance": 372.0267971
              },
              {
                "average": 1.168488251,
                "count": 26891,
                "maximum": 1.402981576,
                "minimum": 0.9829815757,
                "name": "Z",
                "position": 2,
                "stddev": 0.05335810228,
                "variance": 0.002847087079
              },
              {
                "average": 21783.31769,
                "count": 26891,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 16090.70752,
                "variance": 258910868.3
              },
              {
                "average": 1,
                "count": 26891,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 26891,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4880443271,
                "count": 26891,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998663358,
                "variance": 0.2498663537
              },
              {
                "average": 0.0007437432598,
                "count": 26891,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02726202017,
                "variance": 0.0007432177439
              },
              {
                "average": 8.286527091,
                "count": 26891,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.448397234,
                "variance": 2.097854547
              },
              {
                "average": 4.549507418,
                "count": 26891,
                "maximum": 13.57800007,
                "minimum": -15.64799976,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.797323657,
                "variance": 33.60896158
              },
              {
                "average": 0.4779666059,
                "count": 26891,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995235817,
                "variance": 0.2495238086
              },
              {
                "average": 415.3612733,
                "count": 26891,
                "maximum": 416,
                "minimum": 414,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5594859646,
                "variance": 0.3130245445
              },
              {
                "average": 220420217.3,
                "count": 26891,
                "maximum": 220420788.5,
                "minimum": 220419690.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 469.1986184,
                "variance": 220147.3435
              },
              {
                "average": 0.4779666059,
                "count": 26891,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995235817,
                "variance": 0.2495238086
              },
              {
                "average": 0,
                "count": 26891,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 26891,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 26891,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.004945892678,
                "count": 26891,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.07015421473,
                "variance": 0.004921613844
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -87050.7198,
              2375827.108,
              0.9829815757,
              -86933.5198,
              2375912.868,
              1.402981576
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -87050.7198019129,
                    2375827.1082533337,
                    0.982981575710704
                  ],
                  [
                    -87050.7198019129,
                    2375912.8682533335,
                    0.982981575710704
                  ],
                  [
                    -86933.51980191289,
                    2375912.8682533335,
                    1.402981575710704
                  ],
                  [
                    -86933.51980191289,
                    2375827.1082533337,
                    1.402981575710704
                  ],
                  [
                    -87050.7198019129,
                    2375827.1082533337,
                    0.982981575710704
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T05:46:28+00:00",
            "end_time": "2018-09-08T05:28:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2427.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.50675633196573,
              71.37264925696438,
              0.827927571850267
            ],
            [
              -156.5072297934703,
              71.3768640077064,
              0.827927571850267
            ],
            [
              -156.49451363100872,
              71.37702506587726,
              299.2279275718503
            ],
            [
              -156.4940425662759,
              71.37281028008204,
              299.2279275718503
            ],
            [
              -156.50675633196573,
              71.37264925696438,
              0.827927571850267
            ]
          ]
        ]
      },
      "bbox": [
        -156.5072298,
        71.37264926,
        0.8279275719,
        -156.4940426,
        71.37702507,
        299.2279276
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:38Z",
        "pc:count": 1377474,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91390.35174,
            "count": 1377474,
            "maximum": -91206.50819,
            "minimum": -91671.88819,
            "name": "X",
            "position": 0,
            "stddev": 106.2127127,
            "variance": 11281.14033
          },
          {
            "average": 2376753.34,
            "count": 1377474,
            "maximum": 2376996.504,
            "minimum": 2376537.664,
            "name": "Y",
            "position": 1,
            "stddev": 123.9065674,
            "variance": 15352.83744
          },
          {
            "average": 1.179594115,
            "count": 1377474,
            "maximum": 299.2279276,
            "minimum": 0.8279275719,
            "name": "Z",
            "position": 2,
            "stddev": 0.2666947371,
            "variance": 0.0711260828
          },
          {
            "average": 14680.48199,
            "count": 1377474,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10733.53595,
            "variance": 115208793.9
          },
          {
            "average": 1.000000726,
            "count": 1377474,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008520366867,
            "variance": 7.259665155e-07
          },
          {
            "average": 1.000001452,
            "count": 1377474,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001204961401,
            "variance": 1.451931977e-06
          },
          {
            "average": 0.4929131149,
            "count": 1377474,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499949955,
            "variance": 0.2499499575
          },
          {
            "average": 0.0005248737907,
            "count": 1377474,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02290411926,
            "variance": 0.0005245986791
          },
          {
            "average": 7.331724592,
            "count": 1377474,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.769656719,
            "variance": 7.670998344
          },
          {
            "average": 3.109418735,
            "count": 1377474,
            "maximum": 16.26600075,
            "minimum": -16.03800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.189904846,
            "variance": 51.69473169
          },
          {
            "average": 0.4809745955,
            "count": 1377474,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996380842,
            "variance": 0.2496382152
          },
          {
            "average": 405.7101092,
            "count": 1377474,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6759154697,
            "variance": 0.4568617221
          },
          {
            "average": 220414872,
            "count": 1377474,
            "maximum": 220415458.3,
            "minimum": 220414064.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 463.0307634,
            "variance": 214397.4879
          },
          {
            "average": 0.4809745955,
            "count": 1377474,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996380842,
            "variance": 0.2496382152
          },
          {
            "average": 0,
            "count": 1377474,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1377474,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1377474,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05505875247,
            "count": 1377474,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.228094989,
            "variance": 0.05202732402
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91671.88819,
          2376537.664,
          0.8279275719,
          -91206.50819,
          2376996.504,
          299.2279276
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91671.88818848625,
                2376537.6640144554,
                0.827927571850267
              ],
              [
                -91671.88818848625,
                2376996.5040144552,
                0.827927571850267
              ],
              [
                -91206.50818848624,
                2376996.5040144552,
                299.2279275718503
              ],
              [
                -91206.50818848624,
                2376537.6640144554,
                299.2279275718503
              ],
              [
                -91671.88818848625,
                2376537.6640144554,
                0.827927571850267
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:38+00:00",
        "end_time": "2018-09-08T03:54:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2427.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2427.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2427.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2427.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5072298,
            71.37264926,
            0.8279275719,
            -156.4940426,
            71.37702507,
            299.2279276
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.50675633196573,
                  71.37264925696438,
                  0.827927571850267
                ],
                [
                  -156.5072297934703,
                  71.3768640077064,
                  0.827927571850267
                ],
                [
                  -156.49451363100872,
                  71.37702506587726,
                  299.2279275718503
                ],
                [
                  -156.4940425662759,
                  71.37281028008204,
                  299.2279275718503
                ],
                [
                  -156.50675633196573,
                  71.37264925696438,
                  0.827927571850267
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2427.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2427.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:38Z",
            "pc:count": 1377474,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91390.35174,
                "count": 1377474,
                "maximum": -91206.50819,
                "minimum": -91671.88819,
                "name": "X",
                "position": 0,
                "stddev": 106.2127127,
                "variance": 11281.14033
              },
              {
                "average": 2376753.34,
                "count": 1377474,
                "maximum": 2376996.504,
                "minimum": 2376537.664,
                "name": "Y",
                "position": 1,
                "stddev": 123.9065674,
                "variance": 15352.83744
              },
              {
                "average": 1.179594115,
                "count": 1377474,
                "maximum": 299.2279276,
                "minimum": 0.8279275719,
                "name": "Z",
                "position": 2,
                "stddev": 0.2666947371,
                "variance": 0.0711260828
              },
              {
                "average": 14680.48199,
                "count": 1377474,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10733.53595,
                "variance": 115208793.9
              },
              {
                "average": 1.000000726,
                "count": 1377474,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008520366867,
                "variance": 7.259665155e-07
              },
              {
                "average": 1.000001452,
                "count": 1377474,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001204961401,
                "variance": 1.451931977e-06
              },
              {
                "average": 0.4929131149,
                "count": 1377474,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499949955,
                "variance": 0.2499499575
              },
              {
                "average": 0.0005248737907,
                "count": 1377474,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02290411926,
                "variance": 0.0005245986791
              },
              {
                "average": 7.331724592,
                "count": 1377474,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.769656719,
                "variance": 7.670998344
              },
              {
                "average": 3.109418735,
                "count": 1377474,
                "maximum": 16.26600075,
                "minimum": -16.03800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.189904846,
                "variance": 51.69473169
              },
              {
                "average": 0.4809745955,
                "count": 1377474,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996380842,
                "variance": 0.2496382152
              },
              {
                "average": 405.7101092,
                "count": 1377474,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6759154697,
                "variance": 0.4568617221
              },
              {
                "average": 220414872,
                "count": 1377474,
                "maximum": 220415458.3,
                "minimum": 220414064.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 463.0307634,
                "variance": 214397.4879
              },
              {
                "average": 0.4809745955,
                "count": 1377474,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996380842,
                "variance": 0.2496382152
              },
              {
                "average": 0,
                "count": 1377474,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1377474,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1377474,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05505875247,
                "count": 1377474,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.228094989,
                "variance": 0.05202732402
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91671.88819,
              2376537.664,
              0.8279275719,
              -91206.50819,
              2376996.504,
              299.2279276
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91671.88818848625,
                    2376537.6640144554,
                    0.827927571850267
                  ],
                  [
                    -91671.88818848625,
                    2376996.5040144552,
                    0.827927571850267
                  ],
                  [
                    -91206.50818848624,
                    2376996.5040144552,
                    299.2279275718503
                  ],
                  [
                    -91206.50818848624,
                    2376537.6640144554,
                    299.2279275718503
                  ],
                  [
                    -91671.88818848625,
                    2376537.6640144554,
                    0.827927571850267
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:38+00:00",
            "end_time": "2018-09-08T03:54:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2448.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.45568193822157,
              71.38042005686813,
              0.781820563391512
            ],
            [
              -156.45616052366057,
              71.38476780739974,
              0.781820563391512
            ],
            [
              -156.44259265827378,
              71.38493606075345,
              8.521820563391511
            ],
            [
              -156.4421167117655,
              71.38058827243003,
              8.521820563391511
            ],
            [
              -156.45568193822157,
              71.38042005686813,
              0.781820563391512
            ]
          ]
        ]
      },
      "bbox": [
        -156.4561605,
        71.38042006,
        0.7818205634,
        -156.4421167,
        71.38493606,
        8.521820563
      ],
      "properties": {
        "datetime": "2018-09-08T04:36:08Z",
        "pc:count": 2059898,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89524.58932,
            "count": 2059898,
            "maximum": -89277.35005,
            "minimum": -89773.71005,
            "name": "X",
            "position": 0,
            "stddev": 135.2257217,
            "variance": 18285.99581
          },
          {
            "average": 2377561.458,
            "count": 2059898,
            "maximum": 2377785.94,
            "minimum": 2377312.66,
            "name": "Y",
            "position": 1,
            "stddev": 124.443047,
            "variance": 15486.07194
          },
          {
            "average": 1.498927255,
            "count": 2059898,
            "maximum": 8.521820563,
            "minimum": 0.7818205634,
            "name": "Z",
            "position": 2,
            "stddev": 0.5944956077,
            "variance": 0.3534250276
          },
          {
            "average": 16331.05496,
            "count": 2059898,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 9317.516209,
            "variance": 86816108.31
          },
          {
            "average": 1.000001456,
            "count": 2059898,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001206806272,
            "variance": 1.456381378e-06
          },
          {
            "average": 1.000002913,
            "count": 2059898,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001706680554,
            "variance": 2.912758513e-06
          },
          {
            "average": 0.4978270769,
            "count": 2059898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999953997,
            "variance": 0.2499953998
          },
          {
            "average": 0.0006043988586,
            "count": 2059898,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02457710019,
            "variance": 0.0006040338538
          },
          {
            "average": 5.166191239,
            "count": 2059898,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.725634061,
            "variance": 13.88034916
          },
          {
            "average": 0.8819281222,
            "count": 2059898,
            "maximum": 16.27199936,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.195048916,
            "variance": 84.54892456
          },
          {
            "average": 0.4816209346,
            "count": 2059898,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996622171,
            "variance": 0.2496623312
          },
          {
            "average": 407.2440839,
            "count": 2059898,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8487574381,
            "variance": 0.7203891888
          },
          {
            "average": 220415764.4,
            "count": 2059898,
            "maximum": 220416568.4,
            "minimum": 220414289.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 516.0655056,
            "variance": 266323.6061
          },
          {
            "average": 0.4816209346,
            "count": 2059898,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996622171,
            "variance": 0.2496623312
          },
          {
            "average": 0,
            "count": 2059898,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2059898,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2059898,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.146237338,
            "count": 2059898,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.353344081,
            "variance": 0.1248520396
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89773.71005,
          2377312.66,
          0.7818205634,
          -89277.35005,
          2377785.94,
          8.521820563
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89773.71005175529,
                2377312.6596993487,
                0.781820563391512
              ],
              [
                -89773.71005175529,
                2377785.939699349,
                0.781820563391512
              ],
              [
                -89277.3500517553,
                2377785.939699349,
                8.521820563391511
              ],
              [
                -89277.3500517553,
                2377312.6596993487,
                8.521820563391511
              ],
              [
                -89773.71005175529,
                2377312.6596993487,
                0.781820563391512
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:36:08+00:00",
        "end_time": "2018-09-08T03:58:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2448.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2448.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2448.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2448.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4561605,
            71.38042006,
            0.7818205634,
            -156.4421167,
            71.38493606,
            8.521820563
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.45568193822157,
                  71.38042005686813,
                  0.781820563391512
                ],
                [
                  -156.45616052366057,
                  71.38476780739974,
                  0.781820563391512
                ],
                [
                  -156.44259265827378,
                  71.38493606075345,
                  8.521820563391511
                ],
                [
                  -156.4421167117655,
                  71.38058827243003,
                  8.521820563391511
                ],
                [
                  -156.45568193822157,
                  71.38042005686813,
                  0.781820563391512
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2448.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2448.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:36:08Z",
            "pc:count": 2059898,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89524.58932,
                "count": 2059898,
                "maximum": -89277.35005,
                "minimum": -89773.71005,
                "name": "X",
                "position": 0,
                "stddev": 135.2257217,
                "variance": 18285.99581
              },
              {
                "average": 2377561.458,
                "count": 2059898,
                "maximum": 2377785.94,
                "minimum": 2377312.66,
                "name": "Y",
                "position": 1,
                "stddev": 124.443047,
                "variance": 15486.07194
              },
              {
                "average": 1.498927255,
                "count": 2059898,
                "maximum": 8.521820563,
                "minimum": 0.7818205634,
                "name": "Z",
                "position": 2,
                "stddev": 0.5944956077,
                "variance": 0.3534250276
              },
              {
                "average": 16331.05496,
                "count": 2059898,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 9317.516209,
                "variance": 86816108.31
              },
              {
                "average": 1.000001456,
                "count": 2059898,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001206806272,
                "variance": 1.456381378e-06
              },
              {
                "average": 1.000002913,
                "count": 2059898,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001706680554,
                "variance": 2.912758513e-06
              },
              {
                "average": 0.4978270769,
                "count": 2059898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999953997,
                "variance": 0.2499953998
              },
              {
                "average": 0.0006043988586,
                "count": 2059898,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02457710019,
                "variance": 0.0006040338538
              },
              {
                "average": 5.166191239,
                "count": 2059898,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.725634061,
                "variance": 13.88034916
              },
              {
                "average": 0.8819281222,
                "count": 2059898,
                "maximum": 16.27199936,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.195048916,
                "variance": 84.54892456
              },
              {
                "average": 0.4816209346,
                "count": 2059898,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996622171,
                "variance": 0.2496623312
              },
              {
                "average": 407.2440839,
                "count": 2059898,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8487574381,
                "variance": 0.7203891888
              },
              {
                "average": 220415764.4,
                "count": 2059898,
                "maximum": 220416568.4,
                "minimum": 220414289.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 516.0655056,
                "variance": 266323.6061
              },
              {
                "average": 0.4816209346,
                "count": 2059898,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996622171,
                "variance": 0.2496623312
              },
              {
                "average": 0,
                "count": 2059898,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2059898,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2059898,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.146237338,
                "count": 2059898,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.353344081,
                "variance": 0.1248520396
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89773.71005,
              2377312.66,
              0.7818205634,
              -89277.35005,
              2377785.94,
              8.521820563
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89773.71005175529,
                    2377312.6596993487,
                    0.781820563391512
                  ],
                  [
                    -89773.71005175529,
                    2377785.939699349,
                    0.781820563391512
                  ],
                  [
                    -89277.3500517553,
                    2377785.939699349,
                    8.521820563391511
                  ],
                  [
                    -89277.3500517553,
                    2377312.6596993487,
                    8.521820563391511
                  ],
                  [
                    -89773.71005175529,
                    2377312.6596993487,
                    0.781820563391512
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:36:08+00:00",
            "end_time": "2018-09-08T03:58:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2449.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.44286111069124,
              71.38031472903593,
              0.858640131272967
            ],
            [
              -156.44333717625315,
              71.38466232366675,
              0.858640131272967
            ],
            [
              -156.43033073950457,
              71.38482278880728,
              3.638640131272967
            ],
            [
              -156.42985720360986,
              71.3804751581355,
              3.638640131272967
            ],
            [
              -156.44286111069124,
              71.38031472903593,
              0.858640131272967
            ]
          ]
        ]
      },
      "bbox": [
        -156.4433372,
        71.38031473,
        0.8586401313,
        -156.4298572,
        71.38482279,
        3.638640131
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:35Z",
        "pc:count": 1534988,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -89111.31745,
            "count": 1534988,
            "maximum": -88829.82537,
            "minimum": -89305.64537,
            "name": "X",
            "position": 0,
            "stddev": 119.7587007,
            "variance": 14342.14639
          },
          {
            "average": 2377478.625,
            "count": 1534988,
            "maximum": 2377757.184,
            "minimum": 2377283.924,
            "name": "Y",
            "position": 1,
            "stddev": 120.819464,
            "variance": 14597.34288
          },
          {
            "average": 1.31385885,
            "count": 1534988,
            "maximum": 3.638640131,
            "minimum": 0.8586401313,
            "name": "Z",
            "position": 2,
            "stddev": 0.4525201676,
            "variance": 0.2047745021
          },
          {
            "average": 15662.86833,
            "count": 1534988,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10159.46249,
            "variance": 103214678.2
          },
          {
            "average": 1,
            "count": 1534988,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1534988,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5028052337,
            "count": 1534988,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999922935,
            "variance": 0.2499922935
          },
          {
            "average": 0.0005602649662,
            "count": 1534988,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02366329297,
            "variance": 0.0005599514342
          },
          {
            "average": 6.455221148,
            "count": 1534988,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.395317814,
            "variance": 11.52818306
          },
          {
            "average": -0.1022207703,
            "count": 1534988,
            "maximum": 16.33200073,
            "minimum": -15.84599972,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.482128839,
            "variance": 71.94650964
          },
          {
            "average": 0.4832552437,
            "count": 1534988,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997196973,
            "variance": 0.2497197758
          },
          {
            "average": 408.0806599,
            "count": 1534988,
            "maximum": 410,
            "minimum": 406,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7975179751,
            "variance": 0.6360349206
          },
          {
            "average": 220416192.4,
            "count": 1534988,
            "maximum": 220417495.1,
            "minimum": 220415233.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 487.7893026,
            "variance": 237938.4038
          },
          {
            "average": 0.4832552437,
            "count": 1534988,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997196973,
            "variance": 0.2497197758
          },
          {
            "average": 0,
            "count": 1534988,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1534988,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1534988,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09253687977,
            "count": 1534988,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2897824362,
            "variance": 0.08397386036
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -89305.64537,
          2377283.924,
          0.8586401313,
          -88829.82537,
          2377757.184,
          3.638640131
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -89305.645374655,
                2377283.923688789,
                0.858640131272967
              ],
              [
                -89305.645374655,
                2377757.1836887887,
                0.858640131272967
              ],
              [
                -88829.82537465499,
                2377757.1836887887,
                3.638640131272967
              ],
              [
                -88829.82537465499,
                2377283.923688789,
                3.638640131272967
              ],
              [
                -89305.645374655,
                2377283.923688789,
                0.858640131272967
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:35+00:00",
        "end_time": "2018-09-08T04:13:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2449.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2449.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2449.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2449.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4433372,
            71.38031473,
            0.8586401313,
            -156.4298572,
            71.38482279,
            3.638640131
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.44286111069124,
                  71.38031472903593,
                  0.858640131272967
                ],
                [
                  -156.44333717625315,
                  71.38466232366675,
                  0.858640131272967
                ],
                [
                  -156.43033073950457,
                  71.38482278880728,
                  3.638640131272967
                ],
                [
                  -156.42985720360986,
                  71.3804751581355,
                  3.638640131272967
                ],
                [
                  -156.44286111069124,
                  71.38031472903593,
                  0.858640131272967
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2449.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2449.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:35Z",
            "pc:count": 1534988,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -89111.31745,
                "count": 1534988,
                "maximum": -88829.82537,
                "minimum": -89305.64537,
                "name": "X",
                "position": 0,
                "stddev": 119.7587007,
                "variance": 14342.14639
              },
              {
                "average": 2377478.625,
                "count": 1534988,
                "maximum": 2377757.184,
                "minimum": 2377283.924,
                "name": "Y",
                "position": 1,
                "stddev": 120.819464,
                "variance": 14597.34288
              },
              {
                "average": 1.31385885,
                "count": 1534988,
                "maximum": 3.638640131,
                "minimum": 0.8586401313,
                "name": "Z",
                "position": 2,
                "stddev": 0.4525201676,
                "variance": 0.2047745021
              },
              {
                "average": 15662.86833,
                "count": 1534988,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10159.46249,
                "variance": 103214678.2
              },
              {
                "average": 1,
                "count": 1534988,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1534988,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5028052337,
                "count": 1534988,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999922935,
                "variance": 0.2499922935
              },
              {
                "average": 0.0005602649662,
                "count": 1534988,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02366329297,
                "variance": 0.0005599514342
              },
              {
                "average": 6.455221148,
                "count": 1534988,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.395317814,
                "variance": 11.52818306
              },
              {
                "average": -0.1022207703,
                "count": 1534988,
                "maximum": 16.33200073,
                "minimum": -15.84599972,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.482128839,
                "variance": 71.94650964
              },
              {
                "average": 0.4832552437,
                "count": 1534988,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997196973,
                "variance": 0.2497197758
              },
              {
                "average": 408.0806599,
                "count": 1534988,
                "maximum": 410,
                "minimum": 406,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7975179751,
                "variance": 0.6360349206
              },
              {
                "average": 220416192.4,
                "count": 1534988,
                "maximum": 220417495.1,
                "minimum": 220415233.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 487.7893026,
                "variance": 237938.4038
              },
              {
                "average": 0.4832552437,
                "count": 1534988,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997196973,
                "variance": 0.2497197758
              },
              {
                "average": 0,
                "count": 1534988,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1534988,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1534988,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09253687977,
                "count": 1534988,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2897824362,
                "variance": 0.08397386036
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -89305.64537,
              2377283.924,
              0.8586401313,
              -88829.82537,
              2377757.184,
              3.638640131
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -89305.645374655,
                    2377283.923688789,
                    0.858640131272967
                  ],
                  [
                    -89305.645374655,
                    2377757.1836887887,
                    0.858640131272967
                  ],
                  [
                    -88829.82537465499,
                    2377757.1836887887,
                    3.638640131272967
                  ],
                  [
                    -88829.82537465499,
                    2377283.923688789,
                    3.638640131272967
                  ],
                  [
                    -89305.645374655,
                    2377283.923688789,
                    0.858640131272967
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:35+00:00",
            "end_time": "2018-09-08T04:13:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB6_2450.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.43005778305408,
              71.38039995365492,
              0.884362196283283
            ],
            [
              -156.4301874505276,
              71.38159051809784,
              0.884362196283283
            ],
            [
              -156.42672624304296,
              71.38163307839898,
              1.444362196283283
            ],
            [
              -156.4265967599199,
              71.38044251133836,
              1.444362196283283
            ],
            [
              -156.43005778305408,
              71.38039995365492,
              0.884362196283283
            ]
          ]
        ]
      },
      "bbox": [
        -156.4301875,
        71.38039995,
        0.8843621963,
        -156.4265968,
        71.38163308,
        1.444362196
      ],
      "properties": {
        "datetime": "2018-09-08T04:51:35Z",
        "pc:count": 64133,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -88792.82044,
            "count": 64133,
            "maximum": -88710.8141,
            "minimum": -88837.4541,
            "name": "X",
            "position": 0,
            "stddev": 29.25326671,
            "variance": 855.7536134
          },
          {
            "average": 2377321.94,
            "count": 64133,
            "maximum": 2377405.616,
            "minimum": 2377276.016,
            "name": "Y",
            "position": 1,
            "stddev": 29.98065346,
            "variance": 898.839582
          },
          {
            "average": 1.131616496,
            "count": 64133,
            "maximum": 1.444362196,
            "minimum": 0.8843621963,
            "name": "Z",
            "position": 2,
            "stddev": 0.06940386554,
            "variance": 0.004816896551
          },
          {
            "average": 18893.31371,
            "count": 64133,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 12910.95122,
            "variance": 166692661.3
          },
          {
            "average": 1,
            "count": 64133,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 64133,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4999610185,
            "count": 64133,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000038967,
            "variance": 0.2500038967
          },
          {
            "average": 3.118519327e-05,
            "count": 64133,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.005584326907,
            "variance": 3.1184707e-05
          },
          {
            "average": 7.725492336,
            "count": 64133,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.450852565,
            "variance": 6.006678298
          },
          {
            "average": -0.2807010732,
            "count": 64133,
            "maximum": 16.13999939,
            "minimum": -15.58199978,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.547389649,
            "variance": 56.96309051
          },
          {
            "average": 0.4860992001,
            "count": 64133,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998106271,
            "variance": 0.249810663
          },
          {
            "average": 408.9895062,
            "count": 64133,
            "maximum": 410,
            "minimum": 408,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6173737954,
            "variance": 0.3811504032
          },
          {
            "average": 220416691.5,
            "count": 64133,
            "maximum": 220417495,
            "minimum": 220416356.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 390.7249785,
            "variance": 152666.0088
          },
          {
            "average": 0.4860992001,
            "count": 64133,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998106271,
            "variance": 0.249810663
          },
          {
            "average": 0,
            "count": 64133,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 64133,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 64133,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01571733741,
            "count": 64133,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1243806413,
            "variance": 0.01547054394
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -88837.4541,
          2377276.016,
          0.8843621963,
          -88710.8141,
          2377405.616,
          1.444362196
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -88837.4540970715,
                2377276.016461445,
                0.884362196283283
              ],
              [
                -88837.4540970715,
                2377405.6164614446,
                0.884362196283283
              ],
              [
                -88710.81409707149,
                2377405.6164614446,
                1.444362196283283
              ],
              [
                -88710.81409707149,
                2377276.016461445,
                1.444362196283283
              ],
              [
                -88837.4540970715,
                2377276.016461445,
                0.884362196283283
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:51:35+00:00",
        "end_time": "2018-09-08T04:32:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180908_B18_NSB6_2450.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB6_2450.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180908_B18_NSB6_2450.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2450.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4301875,
            71.38039995,
            0.8843621963,
            -156.4265968,
            71.38163308,
            1.444362196
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.43005778305408,
                  71.38039995365492,
                  0.884362196283283
                ],
                [
                  -156.4301874505276,
                  71.38159051809784,
                  0.884362196283283
                ],
                [
                  -156.42672624304296,
                  71.38163307839898,
                  1.444362196283283
                ],
                [
                  -156.4265967599199,
                  71.38044251133836,
                  1.444362196283283
                ],
                [
                  -156.43005778305408,
                  71.38039995365492,
                  0.884362196283283
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB6_2450.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180908_B18_NSB6_2450.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:51:35Z",
            "pc:count": 64133,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -88792.82044,
                "count": 64133,
                "maximum": -88710.8141,
                "minimum": -88837.4541,
                "name": "X",
                "position": 0,
                "stddev": 29.25326671,
                "variance": 855.7536134
              },
              {
                "average": 2377321.94,
                "count": 64133,
                "maximum": 2377405.616,
                "minimum": 2377276.016,
                "name": "Y",
                "position": 1,
                "stddev": 29.98065346,
                "variance": 898.839582
              },
              {
                "average": 1.131616496,
                "count": 64133,
                "maximum": 1.444362196,
                "minimum": 0.8843621963,
                "name": "Z",
                "position": 2,
                "stddev": 0.06940386554,
                "variance": 0.004816896551
              },
              {
                "average": 18893.31371,
                "count": 64133,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 12910.95122,
                "variance": 166692661.3
              },
              {
                "average": 1,
                "count": 64133,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 64133,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4999610185,
                "count": 64133,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000038967,
                "variance": 0.2500038967
              },
              {
                "average": 3.118519327e-05,
                "count": 64133,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.005584326907,
                "variance": 3.1184707e-05
              },
              {
                "average": 7.725492336,
                "count": 64133,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.450852565,
                "variance": 6.006678298
              },
              {
                "average": -0.2807010732,
                "count": 64133,
                "maximum": 16.13999939,
                "minimum": -15.58199978,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.547389649,
                "variance": 56.96309051
              },
              {
                "average": 0.4860992001,
                "count": 64133,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998106271,
                "variance": 0.249810663
              },
              {
                "average": 408.9895062,
                "count": 64133,
                "maximum": 410,
                "minimum": 408,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6173737954,
                "variance": 0.3811504032
              },
              {
                "average": 220416691.5,
                "count": 64133,
                "maximum": 220417495,
                "minimum": 220416356.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 390.7249785,
                "variance": 152666.0088
              },
              {
                "average": 0.4860992001,
                "count": 64133,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998106271,
                "variance": 0.249810663
              },
              {
                "average": 0,
                "count": 64133,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 64133,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 64133,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01571733741,
                "count": 64133,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1243806413,
                "variance": 0.01547054394
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -88837.4541,
              2377276.016,
              0.8843621963,
              -88710.8141,
              2377405.616,
              1.444362196
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -88837.4540970715,
                    2377276.016461445,
                    0.884362196283283
                  ],
                  [
                    -88837.4540970715,
                    2377405.6164614446,
                    0.884362196283283
                  ],
                  [
                    -88710.81409707149,
                    2377405.6164614446,
                    1.444362196283283
                  ],
                  [
                    -88710.81409707149,
                    2377276.016461445,
                    1.444362196283283
                  ],
                  [
                    -88837.4540970715,
                    2377276.016461445,
                    0.884362196283283
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:51:35+00:00",
            "end_time": "2018-09-08T04:32:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2451.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48914377306613,
              71.38488417225845,
              0.761630555514643
            ],
            [
              -156.4896110502187,
              71.38907139162816,
              0.761630555514643
            ],
            [
              -156.4807251929352,
              71.38918317754958,
              5.841630555514643
            ],
            [
              -156.48025958046784,
              71.38499593399226,
              5.841630555514643
            ],
            [
              -156.48914377306613,
              71.38488417225845,
              0.761630555514643
            ]
          ]
        ]
      },
      "bbox": [
        -156.4896111,
        71.38488417,
        0.7616305555,
        -156.4802596,
        71.38918318,
        5.841630556
      ],
      "properties": {
        "datetime": "2018-09-08T04:13:38Z",
        "pc:count": 988264,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90801.68001,
            "count": 988264,
            "maximum": -90653.20666,
            "minimum": -90978.22666,
            "name": "X",
            "position": 0,
            "stddev": 83.21740146,
            "variance": 6925.135906
          },
          {
            "average": 2378055.678,
            "count": 988264,
            "maximum": 2378299.275,
            "minimum": 2377843.475,
            "name": "Y",
            "position": 1,
            "stddev": 123.1064268,
            "variance": 15155.19233
          },
          {
            "average": 1.146457798,
            "count": 988264,
            "maximum": 5.841630556,
            "minimum": 0.7616305555,
            "name": "Z",
            "position": 2,
            "stddev": 0.0913194059,
            "variance": 0.008339233893
          },
          {
            "average": 14316.90275,
            "count": 988264,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10836.9949,
            "variance": 117440458.5
          },
          {
            "average": 1.000005059,
            "count": 988264,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002249301307,
            "variance": 5.059356369e-06
          },
          {
            "average": 1.000010119,
            "count": 988264,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003180984367,
            "variance": 1.011866154e-05
          },
          {
            "average": 0.5003227882,
            "count": 988264,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000001488,
            "variance": 0.2500001488
          },
          {
            "average": 0.0005565314531,
            "count": 988264,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02358436534,
            "variance": 0.0005562222887
          },
          {
            "average": 7.254398622,
            "count": 988264,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.838387992,
            "variance": 8.05644639
          },
          {
            "average": 0.2266481751,
            "count": 988264,
            "maximum": 16.26000023,
            "minimum": -15.88799953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.237856084,
            "variance": 67.86227287
          },
          {
            "average": 0.4889897841,
            "count": 988264,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998790134,
            "variance": 0.249879028
          },
          {
            "average": 403.9950782,
            "count": 988264,
            "maximum": 406,
            "minimum": 403,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7134439148,
            "variance": 0.5090022196
          },
          {
            "average": 220413916.1,
            "count": 988264,
            "maximum": 220415218.9,
            "minimum": 220413187.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 435.6935531,
            "variance": 189828.8722
          },
          {
            "average": 0.4889897841,
            "count": 988264,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998790134,
            "variance": 0.249879028
          },
          {
            "average": 0,
            "count": 988264,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 988264,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 988264,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07395493512,
            "count": 988264,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2616976729,
            "variance": 0.06848567199
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90978.22666,
          2377843.475,
          0.7616305555,
          -90653.20666,
          2378299.275,
          5.841630556
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90978.22665792021,
                2377843.474616068,
                0.761630555514643
              ],
              [
                -90978.22665792021,
                2378299.2746160678,
                0.761630555514643
              ],
              [
                -90653.20665792022,
                2378299.2746160678,
                5.841630555514643
              ],
              [
                -90653.20665792022,
                2377843.474616068,
                5.841630555514643
              ],
              [
                -90978.22665792021,
                2377843.474616068,
                0.761630555514643
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:13:38+00:00",
        "end_time": "2018-09-08T03:39:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2451.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2451.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2451.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2451.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4896111,
            71.38488417,
            0.7616305555,
            -156.4802596,
            71.38918318,
            5.841630556
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48914377306613,
                  71.38488417225845,
                  0.761630555514643
                ],
                [
                  -156.4896110502187,
                  71.38907139162816,
                  0.761630555514643
                ],
                [
                  -156.4807251929352,
                  71.38918317754958,
                  5.841630555514643
                ],
                [
                  -156.48025958046784,
                  71.38499593399226,
                  5.841630555514643
                ],
                [
                  -156.48914377306613,
                  71.38488417225845,
                  0.761630555514643
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2451.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2451.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:13:38Z",
            "pc:count": 988264,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90801.68001,
                "count": 988264,
                "maximum": -90653.20666,
                "minimum": -90978.22666,
                "name": "X",
                "position": 0,
                "stddev": 83.21740146,
                "variance": 6925.135906
              },
              {
                "average": 2378055.678,
                "count": 988264,
                "maximum": 2378299.275,
                "minimum": 2377843.475,
                "name": "Y",
                "position": 1,
                "stddev": 123.1064268,
                "variance": 15155.19233
              },
              {
                "average": 1.146457798,
                "count": 988264,
                "maximum": 5.841630556,
                "minimum": 0.7616305555,
                "name": "Z",
                "position": 2,
                "stddev": 0.0913194059,
                "variance": 0.008339233893
              },
              {
                "average": 14316.90275,
                "count": 988264,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10836.9949,
                "variance": 117440458.5
              },
              {
                "average": 1.000005059,
                "count": 988264,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002249301307,
                "variance": 5.059356369e-06
              },
              {
                "average": 1.000010119,
                "count": 988264,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003180984367,
                "variance": 1.011866154e-05
              },
              {
                "average": 0.5003227882,
                "count": 988264,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000001488,
                "variance": 0.2500001488
              },
              {
                "average": 0.0005565314531,
                "count": 988264,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02358436534,
                "variance": 0.0005562222887
              },
              {
                "average": 7.254398622,
                "count": 988264,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.838387992,
                "variance": 8.05644639
              },
              {
                "average": 0.2266481751,
                "count": 988264,
                "maximum": 16.26000023,
                "minimum": -15.88799953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.237856084,
                "variance": 67.86227287
              },
              {
                "average": 0.4889897841,
                "count": 988264,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998790134,
                "variance": 0.249879028
              },
              {
                "average": 403.9950782,
                "count": 988264,
                "maximum": 406,
                "minimum": 403,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7134439148,
                "variance": 0.5090022196
              },
              {
                "average": 220413916.1,
                "count": 988264,
                "maximum": 220415218.9,
                "minimum": 220413187.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 435.6935531,
                "variance": 189828.8722
              },
              {
                "average": 0.4889897841,
                "count": 988264,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998790134,
                "variance": 0.249879028
              },
              {
                "average": 0,
                "count": 988264,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 988264,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 988264,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07395493512,
                "count": 988264,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2616976729,
                "variance": 0.06848567199
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90978.22666,
              2377843.475,
              0.7616305555,
              -90653.20666,
              2378299.275,
              5.841630556
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90978.22665792021,
                    2377843.474616068,
                    0.761630555514643
                  ],
                  [
                    -90978.22665792021,
                    2378299.2746160678,
                    0.761630555514643
                  ],
                  [
                    -90653.20665792022,
                    2378299.2746160678,
                    5.841630555514643
                  ],
                  [
                    -90653.20665792022,
                    2377843.474616068,
                    5.841630555514643
                  ],
                  [
                    -90978.22665792021,
                    2377843.474616068,
                    0.761630555514643
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:13:38+00:00",
            "end_time": "2018-09-08T03:39:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2436.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.50082111514715,
              71.37681574292863,
              0.817637753768281
            ],
            [
              -156.5012807129624,
              71.38091616969324,
              0.817637753768281
            ],
            [
              -156.4941827675276,
              71.38100594296344,
              516.9776377537682
            ],
            [
              -156.49372447146774,
              71.3769054971858,
              516.9776377537682
            ],
            [
              -156.50082111514715,
              71.37681574292863,
              0.817637753768281
            ]
          ]
        ]
      },
      "bbox": [
        -156.5012807,
        71.37681574,
        0.8176377538,
        -156.4937245,
        71.38100594,
        516.9776378
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:27Z",
        "pc:count": 536719,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -91276.93652,
            "count": 536719,
            "maximum": -91178.15615,
            "minimum": -91437.87615,
            "name": "X",
            "position": 0,
            "stddev": 59.08828569,
            "variance": 3491.425505
          },
          {
            "average": 2377146.863,
            "count": 536719,
            "maximum": 2377428.802,
            "minimum": 2376982.422,
            "name": "Y",
            "position": 1,
            "stddev": 112.244347,
            "variance": 12598.79344
          },
          {
            "average": 1.173424488,
            "count": 536719,
            "maximum": 516.9776378,
            "minimum": 0.8176377538,
            "name": "Z",
            "position": 2,
            "stddev": 0.7094407826,
            "variance": 0.5033062241
          },
          {
            "average": 13977.57778,
            "count": 536719,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10323.15653,
            "variance": 106567560.7
          },
          {
            "average": 1,
            "count": 536719,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 536719,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4943536562,
            "count": 536719,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999685835,
            "variance": 0.2499685845
          },
          {
            "average": 0.0006092573581,
            "count": 536719,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0246756418,
            "variance": 0.0006088872981
          },
          {
            "average": 7.201830008,
            "count": 536719,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.906001627,
            "variance": 8.444845454
          },
          {
            "average": 2.182608668,
            "count": 536719,
            "maximum": 16.21199989,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.833998305,
            "variance": 61.37152945
          },
          {
            "average": 0.4857215787,
            "count": 536719,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997965507,
            "variance": 0.2497965921
          },
          {
            "average": 405.1662751,
            "count": 536719,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.6793307206,
            "variance": 0.4614902279
          },
          {
            "average": 220414568,
            "count": 536719,
            "maximum": 220415447.7,
            "minimum": 220414067.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 451.3753916,
            "variance": 203739.7442
          },
          {
            "average": 0.4857215787,
            "count": 536719,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997965507,
            "variance": 0.2497965921
          },
          {
            "average": 0,
            "count": 536719,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 536719,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 536719,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05858931769,
            "count": 536719,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2348546621,
            "variance": 0.05515671231
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91437.87615,
          2376982.422,
          0.8176377538,
          -91178.15615,
          2377428.802,
          516.9776378
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91437.87614872534,
                2376982.422144246,
                0.817637753768281
              ],
              [
                -91437.87614872534,
                2377428.8021442457,
                0.817637753768281
              ],
              [
                -91178.15614872533,
                2377428.8021442457,
                516.9776377537682
              ],
              [
                -91178.15614872533,
                2376982.422144246,
                516.9776377537682
              ],
              [
                -91437.87614872534,
                2376982.422144246,
                0.817637753768281
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:27+00:00",
        "end_time": "2018-09-08T03:54:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2436.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2436.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2436.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2436.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.5012807,
            71.37681574,
            0.8176377538,
            -156.4937245,
            71.38100594,
            516.9776378
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.50082111514715,
                  71.37681574292863,
                  0.817637753768281
                ],
                [
                  -156.5012807129624,
                  71.38091616969324,
                  0.817637753768281
                ],
                [
                  -156.4941827675276,
                  71.38100594296344,
                  516.9776377537682
                ],
                [
                  -156.49372447146774,
                  71.3769054971858,
                  516.9776377537682
                ],
                [
                  -156.50082111514715,
                  71.37681574292863,
                  0.817637753768281
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2436.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2436.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:27Z",
            "pc:count": 536719,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -91276.93652,
                "count": 536719,
                "maximum": -91178.15615,
                "minimum": -91437.87615,
                "name": "X",
                "position": 0,
                "stddev": 59.08828569,
                "variance": 3491.425505
              },
              {
                "average": 2377146.863,
                "count": 536719,
                "maximum": 2377428.802,
                "minimum": 2376982.422,
                "name": "Y",
                "position": 1,
                "stddev": 112.244347,
                "variance": 12598.79344
              },
              {
                "average": 1.173424488,
                "count": 536719,
                "maximum": 516.9776378,
                "minimum": 0.8176377538,
                "name": "Z",
                "position": 2,
                "stddev": 0.7094407826,
                "variance": 0.5033062241
              },
              {
                "average": 13977.57778,
                "count": 536719,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10323.15653,
                "variance": 106567560.7
              },
              {
                "average": 1,
                "count": 536719,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 536719,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4943536562,
                "count": 536719,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999685835,
                "variance": 0.2499685845
              },
              {
                "average": 0.0006092573581,
                "count": 536719,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0246756418,
                "variance": 0.0006088872981
              },
              {
                "average": 7.201830008,
                "count": 536719,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.906001627,
                "variance": 8.444845454
              },
              {
                "average": 2.182608668,
                "count": 536719,
                "maximum": 16.21199989,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.833998305,
                "variance": 61.37152945
              },
              {
                "average": 0.4857215787,
                "count": 536719,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997965507,
                "variance": 0.2497965921
              },
              {
                "average": 405.1662751,
                "count": 536719,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.6793307206,
                "variance": 0.4614902279
              },
              {
                "average": 220414568,
                "count": 536719,
                "maximum": 220415447.7,
                "minimum": 220414067.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 451.3753916,
                "variance": 203739.7442
              },
              {
                "average": 0.4857215787,
                "count": 536719,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997965507,
                "variance": 0.2497965921
              },
              {
                "average": 0,
                "count": 536719,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 536719,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 536719,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05858931769,
                "count": 536719,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2348546621,
                "variance": 0.05515671231
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91437.87615,
              2376982.422,
              0.8176377538,
              -91178.15615,
              2377428.802,
              516.9776378
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91437.87614872534,
                    2376982.422144246,
                    0.817637753768281
                  ],
                  [
                    -91437.87614872534,
                    2377428.8021442457,
                    0.817637753768281
                  ],
                  [
                    -91178.15614872533,
                    2377428.8021442457,
                    516.9776377537682
                  ],
                  [
                    -91178.15614872533,
                    2376982.422144246,
                    516.9776377537682
                  ],
                  [
                    -91437.87614872534,
                    2376982.422144246,
                    0.817637753768281
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:27+00:00",
            "end_time": "2018-09-08T03:54:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2437.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.49446737925973,
              71.37663238246259,
              0.813344865783314
            ],
            [
              -156.49495360188828,
              71.38098139504208,
              0.813344865783314
            ],
            [
              -156.4813866920204,
              71.38115232819513,
              5.553344865783314
            ],
            [
              -156.48090310840888,
              71.37680327721921,
              5.553344865783314
            ],
            [
              -156.49446737925973,
              71.37663238246259,
              0.813344865783314
            ]
          ]
        ]
      },
      "bbox": [
        -156.4949536,
        71.37663238,
        0.8133448658,
        -156.4809031,
        71.38115233,
        5.553344866
      ],
      "properties": {
        "datetime": "2018-09-08T04:17:27Z",
        "pc:count": 2221865,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90930.21238,
            "count": 2221865,
            "maximum": -90710.00206,
            "minimum": -91206.42206,
            "name": "X",
            "position": 0,
            "stddev": 138.0817449,
            "variance": 19066.56827
          },
          {
            "average": 2377178.145,
            "count": 2221865,
            "maximum": 2377427.192,
            "minimum": 2376953.752,
            "name": "Y",
            "position": 1,
            "stddev": 126.473766,
            "variance": 15995.6135
          },
          {
            "average": 1.740221769,
            "count": 2221865,
            "maximum": 5.553344866,
            "minimum": 0.8133448658,
            "name": "Z",
            "position": 2,
            "stddev": 0.802979206,
            "variance": 0.6447756052
          },
          {
            "average": 15706.64287,
            "count": 2221865,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8270.455421,
            "variance": 68400432.87
          },
          {
            "average": 1.0000027,
            "count": 2221865,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001643297909,
            "variance": 2.700428018e-06
          },
          {
            "average": 1.000005401,
            "count": 2221865,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002323971052,
            "variance": 5.400841451e-06
          },
          {
            "average": 0.4963838937,
            "count": 2221865,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999870361,
            "variance": 0.2499870363
          },
          {
            "average": 0.0004892286435,
            "count": 2221865,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0221131074,
            "variance": 0.0004889895189
          },
          {
            "average": 4.849947679,
            "count": 2221865,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.667742512,
            "variance": 13.45233514
          },
          {
            "average": 1.585669784,
            "count": 2221865,
            "maximum": 16.24200058,
            "minimum": -15.85200024,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.942801235,
            "variance": 79.97369393
          },
          {
            "average": 0.4785871329,
            "count": 2221865,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995413911,
            "variance": 0.2495416014
          },
          {
            "average": 405.7280964,
            "count": 2221865,
            "maximum": 407,
            "minimum": 404,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.8072956383,
            "variance": 0.6517262476
          },
          {
            "average": 220414866.7,
            "count": 2221865,
            "maximum": 220415447.6,
            "minimum": 220414072.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 498.7477832,
            "variance": 248749.3513
          },
          {
            "average": 0.4785871329,
            "count": 2221865,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995413911,
            "variance": 0.2495416014
          },
          {
            "average": 0,
            "count": 2221865,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2221865,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2221865,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1253275964,
            "count": 2221865,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3310900774,
            "variance": 0.1096206393
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -91206.42206,
          2376953.752,
          0.8133448658,
          -90710.00206,
          2377427.192,
          5.553344866
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -91206.4220628336,
                2376953.752100494,
                0.813344865783314
              ],
              [
                -91206.4220628336,
                2377427.1921004946,
                0.813344865783314
              ],
              [
                -90710.00206283359,
                2377427.1921004946,
                5.553344865783314
              ],
              [
                -90710.00206283359,
                2376953.752100494,
                5.553344865783314
              ],
              [
                -91206.4220628336,
                2376953.752100494,
                0.813344865783314
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:17:27+00:00",
        "end_time": "2018-09-08T03:54:32+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2437.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2437.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2437.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2437.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4949536,
            71.37663238,
            0.8133448658,
            -156.4809031,
            71.38115233,
            5.553344866
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.49446737925973,
                  71.37663238246259,
                  0.813344865783314
                ],
                [
                  -156.49495360188828,
                  71.38098139504208,
                  0.813344865783314
                ],
                [
                  -156.4813866920204,
                  71.38115232819513,
                  5.553344865783314
                ],
                [
                  -156.48090310840888,
                  71.37680327721921,
                  5.553344865783314
                ],
                [
                  -156.49446737925973,
                  71.37663238246259,
                  0.813344865783314
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2437.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2437.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:17:27Z",
            "pc:count": 2221865,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90930.21238,
                "count": 2221865,
                "maximum": -90710.00206,
                "minimum": -91206.42206,
                "name": "X",
                "position": 0,
                "stddev": 138.0817449,
                "variance": 19066.56827
              },
              {
                "average": 2377178.145,
                "count": 2221865,
                "maximum": 2377427.192,
                "minimum": 2376953.752,
                "name": "Y",
                "position": 1,
                "stddev": 126.473766,
                "variance": 15995.6135
              },
              {
                "average": 1.740221769,
                "count": 2221865,
                "maximum": 5.553344866,
                "minimum": 0.8133448658,
                "name": "Z",
                "position": 2,
                "stddev": 0.802979206,
                "variance": 0.6447756052
              },
              {
                "average": 15706.64287,
                "count": 2221865,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8270.455421,
                "variance": 68400432.87
              },
              {
                "average": 1.0000027,
                "count": 2221865,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001643297909,
                "variance": 2.700428018e-06
              },
              {
                "average": 1.000005401,
                "count": 2221865,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002323971052,
                "variance": 5.400841451e-06
              },
              {
                "average": 0.4963838937,
                "count": 2221865,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999870361,
                "variance": 0.2499870363
              },
              {
                "average": 0.0004892286435,
                "count": 2221865,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0221131074,
                "variance": 0.0004889895189
              },
              {
                "average": 4.849947679,
                "count": 2221865,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.667742512,
                "variance": 13.45233514
              },
              {
                "average": 1.585669784,
                "count": 2221865,
                "maximum": 16.24200058,
                "minimum": -15.85200024,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.942801235,
                "variance": 79.97369393
              },
              {
                "average": 0.4785871329,
                "count": 2221865,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995413911,
                "variance": 0.2495416014
              },
              {
                "average": 405.7280964,
                "count": 2221865,
                "maximum": 407,
                "minimum": 404,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.8072956383,
                "variance": 0.6517262476
              },
              {
                "average": 220414866.7,
                "count": 2221865,
                "maximum": 220415447.6,
                "minimum": 220414072.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 498.7477832,
                "variance": 248749.3513
              },
              {
                "average": 0.4785871329,
                "count": 2221865,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995413911,
                "variance": 0.2495416014
              },
              {
                "average": 0,
                "count": 2221865,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2221865,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2221865,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1253275964,
                "count": 2221865,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3310900774,
                "variance": 0.1096206393
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -91206.42206,
              2376953.752,
              0.8133448658,
              -90710.00206,
              2377427.192,
              5.553344866
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -91206.4220628336,
                    2376953.752100494,
                    0.813344865783314
                  ],
                  [
                    -91206.4220628336,
                    2377427.1921004946,
                    0.813344865783314
                  ],
                  [
                    -90710.00206283359,
                    2377427.1921004946,
                    5.553344865783314
                  ],
                  [
                    -90710.00206283359,
                    2376953.752100494,
                    5.553344865783314
                  ],
                  [
                    -91206.4220628336,
                    2376953.752100494,
                    0.813344865783314
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:17:27+00:00",
            "end_time": "2018-09-08T03:54:32+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2438.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.48164809028555,
              71.37653031627003,
              0.806511709500541
            ],
            [
              -156.4821317722512,
              71.3808789898289,
              0.806511709500541
            ],
            [
              -156.46856701334238,
              71.3810490151017,
              13.62651170950054
            ],
            [
              -156.46808596979747,
              71.37670030335357,
              13.62651170950054
            ],
            [
              -156.48164809028555,
              71.37653031627003,
              0.806511709500541
            ]
          ]
        ]
      },
      "bbox": [
        -156.4821318,
        71.37653032,
        0.8065117095,
        -156.468086,
        71.38104902,
        13.62651171
      ],
      "properties": {
        "datetime": "2018-09-08T04:32:20Z",
        "pc:count": 2632928,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90503.75698,
            "count": 2632928,
            "maximum": -90241.99774,
            "minimum": -90738.33774,
            "name": "X",
            "position": 0,
            "stddev": 134.9968027,
            "variance": 18224.13674
          },
          {
            "average": 2377171.452,
            "count": 2632928,
            "maximum": 2377398.496,
            "minimum": 2376925.096,
            "name": "Y",
            "position": 1,
            "stddev": 127.8661701,
            "variance": 16349.75746
          },
          {
            "average": 3.26121409,
            "count": 2632928,
            "maximum": 13.62651171,
            "minimum": 0.8065117095,
            "name": "Z",
            "position": 2,
            "stddev": 1.180307876,
            "variance": 1.393126681
          },
          {
            "average": 19448.63542,
            "count": 2632928,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 8027.980866,
            "variance": 64448476.79
          },
          {
            "average": 1.000075201,
            "count": 2632928,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008801968795,
            "variance": 7.747465468e-05
          },
          {
            "average": 1.000150403,
            "count": 2632928,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01253861362,
            "variance": 0.0001572168315
          },
          {
            "average": 0.5038675573,
            "count": 2632928,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999851367,
            "variance": 0.2499851369
          },
          {
            "average": 0.0004664009042,
            "count": 2632928,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02159128416,
            "variance": 0.0004661835515
          },
          {
            "average": 2.252963241,
            "count": 2632928,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.517015272,
            "variance": 6.33536588
          },
          {
            "average": 0.75428087,
            "count": 2632928,
            "maximum": 16.3920002,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.22971288,
            "variance": 104.6470257
          },
          {
            "average": 0.5530128435,
            "count": 2632928,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49718179,
            "variance": 0.2471897323
          },
          {
            "average": 406.3704401,
            "count": 2632928,
            "maximum": 408,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.943897845,
            "variance": 0.8909431417
          },
          {
            "average": 220415225.7,
            "count": 2632928,
            "maximum": 220416340.1,
            "minimum": 220414302.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 580.8437403,
            "variance": 337379.4506
          },
          {
            "average": 0.5530128435,
            "count": 2632928,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49718179,
            "variance": 0.2471897323
          },
          {
            "average": 0,
            "count": 2632928,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2632928,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2632928,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2442322768,
            "count": 2632928,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4296311696,
            "variance": 0.1845829419
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90738.33774,
          2376925.096,
          0.8065117095,
          -90241.99774,
          2377398.496,
          13.62651171
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90738.33774247173,
                2376925.096134769,
                0.806511709500541
              ],
              [
                -90738.33774247173,
                2377398.496134769,
                0.806511709500541
              ],
              [
                -90241.99774247174,
                2377398.496134769,
                13.62651170950054
              ],
              [
                -90241.99774247174,
                2376925.096134769,
                13.62651170950054
              ],
              [
                -90738.33774247173,
                2376925.096134769,
                0.806511709500541
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:32:20+00:00",
        "end_time": "2018-09-08T03:58:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2438.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2438.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2438.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2438.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4821318,
            71.37653032,
            0.8065117095,
            -156.468086,
            71.38104902,
            13.62651171
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.48164809028555,
                  71.37653031627003,
                  0.806511709500541
                ],
                [
                  -156.4821317722512,
                  71.3808789898289,
                  0.806511709500541
                ],
                [
                  -156.46856701334238,
                  71.3810490151017,
                  13.62651170950054
                ],
                [
                  -156.46808596979747,
                  71.37670030335357,
                  13.62651170950054
                ],
                [
                  -156.48164809028555,
                  71.37653031627003,
                  0.806511709500541
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2438.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2438.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:32:20Z",
            "pc:count": 2632928,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90503.75698,
                "count": 2632928,
                "maximum": -90241.99774,
                "minimum": -90738.33774,
                "name": "X",
                "position": 0,
                "stddev": 134.9968027,
                "variance": 18224.13674
              },
              {
                "average": 2377171.452,
                "count": 2632928,
                "maximum": 2377398.496,
                "minimum": 2376925.096,
                "name": "Y",
                "position": 1,
                "stddev": 127.8661701,
                "variance": 16349.75746
              },
              {
                "average": 3.26121409,
                "count": 2632928,
                "maximum": 13.62651171,
                "minimum": 0.8065117095,
                "name": "Z",
                "position": 2,
                "stddev": 1.180307876,
                "variance": 1.393126681
              },
              {
                "average": 19448.63542,
                "count": 2632928,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 8027.980866,
                "variance": 64448476.79
              },
              {
                "average": 1.000075201,
                "count": 2632928,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008801968795,
                "variance": 7.747465468e-05
              },
              {
                "average": 1.000150403,
                "count": 2632928,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01253861362,
                "variance": 0.0001572168315
              },
              {
                "average": 0.5038675573,
                "count": 2632928,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999851367,
                "variance": 0.2499851369
              },
              {
                "average": 0.0004664009042,
                "count": 2632928,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02159128416,
                "variance": 0.0004661835515
              },
              {
                "average": 2.252963241,
                "count": 2632928,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.517015272,
                "variance": 6.33536588
              },
              {
                "average": 0.75428087,
                "count": 2632928,
                "maximum": 16.3920002,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.22971288,
                "variance": 104.6470257
              },
              {
                "average": 0.5530128435,
                "count": 2632928,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49718179,
                "variance": 0.2471897323
              },
              {
                "average": 406.3704401,
                "count": 2632928,
                "maximum": 408,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.943897845,
                "variance": 0.8909431417
              },
              {
                "average": 220415225.7,
                "count": 2632928,
                "maximum": 220416340.1,
                "minimum": 220414302.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 580.8437403,
                "variance": 337379.4506
              },
              {
                "average": 0.5530128435,
                "count": 2632928,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49718179,
                "variance": 0.2471897323
              },
              {
                "average": 0,
                "count": 2632928,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2632928,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2632928,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2442322768,
                "count": 2632928,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4296311696,
                "variance": 0.1845829419
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90738.33774,
              2376925.096,
              0.8065117095,
              -90241.99774,
              2377398.496,
              13.62651171
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90738.33774247173,
                    2376925.096134769,
                    0.806511709500541
                  ],
                  [
                    -90738.33774247173,
                    2377398.496134769,
                    0.806511709500541
                  ],
                  [
                    -90241.99774247174,
                    2377398.496134769,
                    13.62651170950054
                  ],
                  [
                    -90241.99774247174,
                    2376925.096134769,
                    13.62651170950054
                  ],
                  [
                    -90738.33774247173,
                    2376925.096134769,
                    0.806511709500541
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:32:20+00:00",
            "end_time": "2018-09-08T03:58:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180907_B18_NSB6_2439.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -156.46882717992156,
              71.37642712714113,
              0.789427319501415
            ],
            [
              -156.46930836197706,
              71.38077582893251,
              0.789427319501415
            ],
            [
              -156.4557435686039,
              71.38094497368213,
              19.069427319501415
            ],
            [
              -156.45526502502057,
              71.37659623389919,
              19.069427319501415
            ],
            [
              -156.46882717992156,
              71.37642712714113,
              0.789427319501415
            ]
          ]
        ]
      },
      "bbox": [
        -156.4693084,
        71.37642713,
        0.7894273195,
        -156.455265,
        71.38094497,
        19.06942732
      ],
      "properties": {
        "datetime": "2018-09-08T04:36:19Z",
        "pc:count": 1890970,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -90029.5433,
            "count": 1890970,
            "maximum": -89773.85104,
            "minimum": -90270.19104,
            "name": "X",
            "position": 0,
            "stddev": 135.7240364,
            "variance": 18421.01407
          },
          {
            "average": 2377138.508,
            "count": 1890970,
            "maximum": 2377369.806,
            "minimum": 2376896.406,
            "name": "Y",
            "position": 1,
            "stddev": 130.4135037,
            "variance": 17007.68195
          },
          {
            "average": 1.177430487,
            "count": 1890970,
            "maximum": 19.06942732,
            "minimum": 0.7894273195,
            "name": "Z",
            "position": 2,
            "stddev": 0.3021625418,
            "variance": 0.09130220165
          },
          {
            "average": 14987.37847,
            "count": 1890970,
            "maximum": 65535,
            "minimum": 1471,
            "name": "Intensity",
            "position": 3,
            "stddev": 10564.63581,
            "variance": 111611529.8
          },
          {
            "average": 1.000003702,
            "count": 1890970,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001924004181,
            "variance": 3.70179209e-06
          },
          {
            "average": 1.000007404,
            "count": 1890970,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002720947771,
            "variance": 7.403556774e-06
          },
          {
            "average": 0.4949703062,
            "count": 1890970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999748337,
            "variance": 0.2499748344
          },
          {
            "average": 0.000487051619,
            "count": 1890970,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02206387675,
            "variance": 0.0004868146572
          },
          {
            "average": 7.05488929,
            "count": 1890970,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.018747111,
            "variance": 9.112834119
          },
          {
            "average": 2.14070165,
            "count": 1890970,
            "maximum": 16.35000038,
            "minimum": -15.86999989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.707410398,
            "variance": 59.40417504
          },
          {
            "average": 0.4884514297,
            "count": 1890970,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998667449,
            "variance": 0.2498667627
          },
          {
            "average": 407.2722608,
            "count": 1890970,
            "maximum": 409,
            "minimum": 405,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.7197240518,
            "variance": 0.5180027107
          },
          {
            "average": 220415742,
            "count": 1890970,
            "maximum": 220416579.8,
            "minimum": 220414302,
            "name": "GpsTime",
            "position": 12,
            "stddev": 478.4590962,
            "variance": 228923.1067
          },
          {
            "average": 0.4884514297,
            "count": 1890970,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998667449,
            "variance": 0.2498667627
          },
          {
            "average": 0,
            "count": 1890970,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1890970,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1890970,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07947825719,
            "count": 1890970,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2704838304,
            "variance": 0.07316150251
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -90270.19104,
          2376896.406,
          0.7894273195,
          -89773.85104,
          2377369.806,
          19.06942732
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -90270.19104095742,
                2376896.406156219,
                0.789427319501415
              ],
              [
                -90270.19104095742,
                2377369.8061562194,
                0.789427319501415
              ],
              [
                -89773.85104095742,
                2377369.8061562194,
                19.069427319501415
              ],
              [
                -89773.85104095742,
                2376896.406156219,
                19.069427319501415
              ],
              [
                -90270.19104095742,
                2376896.406156219,
                0.789427319501415
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-08T04:36:19+00:00",
        "end_time": "2018-09-08T03:58:22+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_3/20180907_B18_NSB6_2439.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180907_B18_NSB6_2439.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_3/20180907_B18_NSB6_2439.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2439.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -156.4693084,
            71.37642713,
            0.7894273195,
            -156.455265,
            71.38094497,
            19.06942732
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -156.46882717992156,
                  71.37642712714113,
                  0.789427319501415
                ],
                [
                  -156.46930836197706,
                  71.38077582893251,
                  0.789427319501415
                ],
                [
                  -156.4557435686039,
                  71.38094497368213,
                  19.069427319501415
                ],
                [
                  -156.45526502502057,
                  71.37659623389919,
                  19.069427319501415
                ],
                [
                  -156.46882717992156,
                  71.37642712714113,
                  0.789427319501415
                ]
              ]
            ]
          },
          "id": "20180907_B18_NSB6_2439.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_3/20180907_B18_NSB6_2439.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-08T04:36:19Z",
            "pc:count": 1890970,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -90029.5433,
                "count": 1890970,
                "maximum": -89773.85104,
                "minimum": -90270.19104,
                "name": "X",
                "position": 0,
                "stddev": 135.7240364,
                "variance": 18421.01407
              },
              {
                "average": 2377138.508,
                "count": 1890970,
                "maximum": 2377369.806,
                "minimum": 2376896.406,
                "name": "Y",
                "position": 1,
                "stddev": 130.4135037,
                "variance": 17007.68195
              },
              {
                "average": 1.177430487,
                "count": 1890970,
                "maximum": 19.06942732,
                "minimum": 0.7894273195,
                "name": "Z",
                "position": 2,
                "stddev": 0.3021625418,
                "variance": 0.09130220165
              },
              {
                "average": 14987.37847,
                "count": 1890970,
                "maximum": 65535,
                "minimum": 1471,
                "name": "Intensity",
                "position": 3,
                "stddev": 10564.63581,
                "variance": 111611529.8
              },
              {
                "average": 1.000003702,
                "count": 1890970,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001924004181,
                "variance": 3.70179209e-06
              },
              {
                "average": 1.000007404,
                "count": 1890970,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002720947771,
                "variance": 7.403556774e-06
              },
              {
                "average": 0.4949703062,
                "count": 1890970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999748337,
                "variance": 0.2499748344
              },
              {
                "average": 0.000487051619,
                "count": 1890970,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02206387675,
                "variance": 0.0004868146572
              },
              {
                "average": 7.05488929,
                "count": 1890970,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.018747111,
                "variance": 9.112834119
              },
              {
                "average": 2.14070165,
                "count": 1890970,
                "maximum": 16.35000038,
                "minimum": -15.86999989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.707410398,
                "variance": 59.40417504
              },
              {
                "average": 0.4884514297,
                "count": 1890970,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998667449,
                "variance": 0.2498667627
              },
              {
                "average": 407.2722608,
                "count": 1890970,
                "maximum": 409,
                "minimum": 405,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.7197240518,
                "variance": 0.5180027107
              },
              {
                "average": 220415742,
                "count": 1890970,
                "maximum": 220416579.8,
                "minimum": 220414302,
                "name": "GpsTime",
                "position": 12,
                "stddev": 478.4590962,
                "variance": 228923.1067
              },
              {
                "average": 0.4884514297,
                "count": 1890970,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998667449,
                "variance": 0.2498667627
              },
              {
                "average": 0,
                "count": 1890970,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1890970,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1890970,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07947825719,
                "count": 1890970,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2704838304,
                "variance": 0.07316150251
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -90270.19104,
              2376896.406,
              0.7894273195,
              -89773.85104,
              2377369.806,
              19.06942732
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -90270.19104095742,
                    2376896.406156219,
                    0.789427319501415
                  ],
                  [
                    -90270.19104095742,
                    2377369.8061562194,
                    0.789427319501415
                  ],
                  [
                    -89773.85104095742,
                    2377369.8061562194,
                    19.069427319501415
                  ],
                  [
                    -89773.85104095742,
                    2376896.406156219,
                    19.069427319501415
                  ],
                  [
                    -90270.19104095742,
                    2376896.406156219,
                    0.789427319501415
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-08T04:36:19+00:00",
            "end_time": "2018-09-08T03:58:22+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00188.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98930992408918,
              69.75257250264119,
              1.230830536142483
            ],
            [
              -162.9910373280044,
              69.75710381850317,
              1.230830536142483
            ],
            [
              -162.97804934531777,
              69.7577354140831,
              19.330830536142486
            ],
            [
              -162.97632437558718,
              69.7532039632358,
              19.330830536142486
            ],
            [
              -162.98930992408918,
              69.75257250264119,
              1.230830536142483
            ]
          ]
        ]
      },
      "bbox": [
        -162.9910373,
        69.7525725,
        1.230830536,
        -162.9763244,
        69.75773541,
        19.33083054
      ],
      "properties": {
        "datetime": "2019-08-05T21:22:06Z",
        "pc:count": 3745002,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351473.2557,
            "count": 3745002,
            "maximum": -351202.5962,
            "minimum": -351716.9162,
            "name": "X",
            "position": 0,
            "stddev": 126.8422001,
            "variance": 16088.94372
          },
          {
            "average": 2221761.911,
            "count": 3745002,
            "maximum": 2222014.741,
            "minimum": 2221512.461,
            "name": "Y",
            "position": 1,
            "stddev": 130.8351593,
            "variance": 17117.83892
          },
          {
            "average": 3.557661924,
            "count": 3745002,
            "maximum": 19.33083054,
            "minimum": 1.230830536,
            "name": "Z",
            "position": 2,
            "stddev": 0.3299496176,
            "variance": 0.1088667502
          },
          {
            "average": 44827.96339,
            "count": 3745002,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 14887.99046,
            "variance": 221652260
          },
          {
            "average": 1.000002403,
            "count": 3745002,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001550225098,
            "variance": 2.403197855e-06
          },
          {
            "average": 1.000004806,
            "count": 3745002,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002192346724,
            "variance": 4.80638416e-06
          },
          {
            "average": 0.4102929718,
            "count": 3745002,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4918868912,
            "variance": 0.2419527137
          },
          {
            "average": 0.0003084110502,
            "count": 3745002,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01755892979,
            "variance": 0.0003083160152
          },
          {
            "average": 1.329795819,
            "count": 3745002,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8720408733,
            "variance": 0.7604552847
          },
          {
            "average": 1.61057412,
            "count": 3745002,
            "maximum": 21.50399971,
            "minimum": -21.16200066,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.05784848,
            "variance": 101.1603161
          },
          {
            "average": 0.5109409821,
            "count": 3745002,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998803473,
            "variance": 0.2498803616
          },
          {
            "average": 266.7041881,
            "count": 3745002,
            "maximum": 302,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.18335196,
            "variance": 330.6342885
          },
          {
            "average": 249074340.4,
            "count": 3745002,
            "maximum": 249075326,
            "minimum": 249071314.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1490.993366,
            "variance": 2223061.216
          },
          {
            "average": 0.5109409821,
            "count": 3745002,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998803473,
            "variance": 0.2498803616
          },
          {
            "average": 0,
            "count": 3745002,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3745002,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3745002,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2141785238,
            "count": 3745002,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4102512994,
            "variance": 0.1683061287
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351716.9162,
          2221512.461,
          1.230830536,
          -351202.5962,
          2222014.741,
          19.33083054
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351716.9161547339,
                2221512.4613323254,
                1.230830536142483
              ],
              [
                -351716.9161547339,
                2222014.7413323256,
                1.230830536142483
              ],
              [
                -351202.59615473397,
                2222014.7413323256,
                19.330830536142486
              ],
              [
                -351202.59615473397,
                2221512.4613323254,
                19.330830536142486
              ],
              [
                -351716.9161547339,
                2221512.4613323254,
                1.230830536142483
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:22:06+00:00",
        "end_time": "2019-08-05T20:15:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00188.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00188.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00188.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00188.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9910373,
            69.7525725,
            1.230830536,
            -162.9763244,
            69.75773541,
            19.33083054
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98930992408918,
                  69.75257250264119,
                  1.230830536142483
                ],
                [
                  -162.9910373280044,
                  69.75710381850317,
                  1.230830536142483
                ],
                [
                  -162.97804934531777,
                  69.7577354140831,
                  19.330830536142486
                ],
                [
                  -162.97632437558718,
                  69.7532039632358,
                  19.330830536142486
                ],
                [
                  -162.98930992408918,
                  69.75257250264119,
                  1.230830536142483
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00188.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00188.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:22:06Z",
            "pc:count": 3745002,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351473.2557,
                "count": 3745002,
                "maximum": -351202.5962,
                "minimum": -351716.9162,
                "name": "X",
                "position": 0,
                "stddev": 126.8422001,
                "variance": 16088.94372
              },
              {
                "average": 2221761.911,
                "count": 3745002,
                "maximum": 2222014.741,
                "minimum": 2221512.461,
                "name": "Y",
                "position": 1,
                "stddev": 130.8351593,
                "variance": 17117.83892
              },
              {
                "average": 3.557661924,
                "count": 3745002,
                "maximum": 19.33083054,
                "minimum": 1.230830536,
                "name": "Z",
                "position": 2,
                "stddev": 0.3299496176,
                "variance": 0.1088667502
              },
              {
                "average": 44827.96339,
                "count": 3745002,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 14887.99046,
                "variance": 221652260
              },
              {
                "average": 1.000002403,
                "count": 3745002,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001550225098,
                "variance": 2.403197855e-06
              },
              {
                "average": 1.000004806,
                "count": 3745002,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002192346724,
                "variance": 4.80638416e-06
              },
              {
                "average": 0.4102929718,
                "count": 3745002,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4918868912,
                "variance": 0.2419527137
              },
              {
                "average": 0.0003084110502,
                "count": 3745002,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01755892979,
                "variance": 0.0003083160152
              },
              {
                "average": 1.329795819,
                "count": 3745002,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8720408733,
                "variance": 0.7604552847
              },
              {
                "average": 1.61057412,
                "count": 3745002,
                "maximum": 21.50399971,
                "minimum": -21.16200066,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.05784848,
                "variance": 101.1603161
              },
              {
                "average": 0.5109409821,
                "count": 3745002,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998803473,
                "variance": 0.2498803616
              },
              {
                "average": 266.7041881,
                "count": 3745002,
                "maximum": 302,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.18335196,
                "variance": 330.6342885
              },
              {
                "average": 249074340.4,
                "count": 3745002,
                "maximum": 249075326,
                "minimum": 249071314.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1490.993366,
                "variance": 2223061.216
              },
              {
                "average": 0.5109409821,
                "count": 3745002,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998803473,
                "variance": 0.2498803616
              },
              {
                "average": 0,
                "count": 3745002,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3745002,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3745002,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2141785238,
                "count": 3745002,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4102512994,
                "variance": 0.1683061287
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351716.9162,
              2221512.461,
              1.230830536,
              -351202.5962,
              2222014.741,
              19.33083054
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351716.9161547339,
                    2221512.4613323254,
                    1.230830536142483
                  ],
                  [
                    -351716.9161547339,
                    2222014.7413323256,
                    1.230830536142483
                  ],
                  [
                    -351202.59615473397,
                    2222014.7413323256,
                    19.330830536142486
                  ],
                  [
                    -351202.59615473397,
                    2221512.4613323254,
                    19.330830536142486
                  ],
                  [
                    -351716.9161547339,
                    2221512.4613323254,
                    1.230830536142483
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:22:06+00:00",
            "end_time": "2019-08-05T20:15:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00101.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.03109265746244,
              69.7320335377673,
              1.093714612566178
            ],
            [
              -163.03269423502496,
              69.73621835635507,
              1.093714612566178
            ],
            [
              -163.02426451035885,
              69.73663063798969,
              7.393714612566178
            ],
            [
              -163.02266439047332,
              69.73244573811763,
              7.393714612566178
            ],
            [
              -163.03109265746244,
              69.7320335377673,
              1.093714612566178
            ]
          ]
        ]
      },
      "bbox": [
        -163.0326942,
        69.73203354,
        1.093714613,
        -163.0226644,
        69.73663064,
        7.393714613
      ],
      "properties": {
        "datetime": "2019-08-05T21:09:42Z",
        "pc:count": 1657328,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353438.7897,
            "count": 1657328,
            "maximum": -353313.3482,
            "minimum": -353647.4882,
            "name": "X",
            "position": 0,
            "stddev": 69.2808809,
            "variance": 4799.840458
          },
          {
            "average": 2219703.913,
            "count": 1657328,
            "maximum": 2219963.06,
            "minimum": 2219499.1,
            "name": "Y",
            "position": 1,
            "stddev": 127.3976541,
            "variance": 16230.16227
          },
          {
            "average": 2.146358187,
            "count": 1657328,
            "maximum": 7.393714613,
            "minimum": 1.093714613,
            "name": "Z",
            "position": 2,
            "stddev": 1.866039829,
            "variance": 3.482104643
          },
          {
            "average": 23571.71536,
            "count": 1657328,
            "maximum": 65535,
            "minimum": 1188,
            "name": "Intensity",
            "position": 3,
            "stddev": 15687.42006,
            "variance": 246095148
          },
          {
            "average": 1.00000181,
            "count": 1657328,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001345414585,
            "variance": 1.810140407e-06
          },
          {
            "average": 1.00000362,
            "count": 1657328,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001902701832,
            "variance": 3.62027426e-06
          },
          {
            "average": 0.5372708359,
            "count": 1657328,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4986091002,
            "variance": 0.2486110348
          },
          {
            "average": 0.000146018169,
            "count": 1657328,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01208291918,
            "variance": 0.0001459969358
          },
          {
            "average": 6.495025125,
            "count": 1657328,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.626773954,
            "variance": 13.15348931
          },
          {
            "average": -4.447988873,
            "count": 1657328,
            "maximum": 16.37999916,
            "minimum": -13.29599953,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.035034571,
            "variance": 36.42164227
          },
          {
            "average": 0.5357599703,
            "count": 1657328,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987197355,
            "variance": 0.2487213746
          },
          {
            "average": 251.7190532,
            "count": 1657328,
            "maximum": 254,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.237645618,
            "variance": 1.531766676
          },
          {
            "average": 249074202.3,
            "count": 1657328,
            "maximum": 249074582,
            "minimum": 249073890.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 217.571898,
            "variance": 47337.53082
          },
          {
            "average": 0.5357599703,
            "count": 1657328,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987197355,
            "variance": 0.2487213746
          },
          {
            "average": 0,
            "count": 1657328,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1657328,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1657328,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.073497823,
            "count": 1657328,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2609519766,
            "variance": 0.0680959341
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353647.4882,
          2219499.1,
          1.093714613,
          -353313.3482,
          2219963.06,
          7.393714613
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353647.4881922897,
                2219499.1004923345,
                1.093714612566178
              ],
              [
                -353647.4881922897,
                2219963.0604923344,
                1.093714612566178
              ],
              [
                -353313.3481922897,
                2219963.0604923344,
                7.393714612566178
              ],
              [
                -353313.3481922897,
                2219499.1004923345,
                7.393714612566178
              ],
              [
                -353647.4881922897,
                2219499.1004923345,
                1.093714612566178
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:09:42+00:00",
        "end_time": "2019-08-05T20:58:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00101.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00101.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00101.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00101.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0326942,
            69.73203354,
            1.093714613,
            -163.0226644,
            69.73663064,
            7.393714613
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.03109265746244,
                  69.7320335377673,
                  1.093714612566178
                ],
                [
                  -163.03269423502496,
                  69.73621835635507,
                  1.093714612566178
                ],
                [
                  -163.02426451035885,
                  69.73663063798969,
                  7.393714612566178
                ],
                [
                  -163.02266439047332,
                  69.73244573811763,
                  7.393714612566178
                ],
                [
                  -163.03109265746244,
                  69.7320335377673,
                  1.093714612566178
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00101.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00101.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:09:42Z",
            "pc:count": 1657328,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353438.7897,
                "count": 1657328,
                "maximum": -353313.3482,
                "minimum": -353647.4882,
                "name": "X",
                "position": 0,
                "stddev": 69.2808809,
                "variance": 4799.840458
              },
              {
                "average": 2219703.913,
                "count": 1657328,
                "maximum": 2219963.06,
                "minimum": 2219499.1,
                "name": "Y",
                "position": 1,
                "stddev": 127.3976541,
                "variance": 16230.16227
              },
              {
                "average": 2.146358187,
                "count": 1657328,
                "maximum": 7.393714613,
                "minimum": 1.093714613,
                "name": "Z",
                "position": 2,
                "stddev": 1.866039829,
                "variance": 3.482104643
              },
              {
                "average": 23571.71536,
                "count": 1657328,
                "maximum": 65535,
                "minimum": 1188,
                "name": "Intensity",
                "position": 3,
                "stddev": 15687.42006,
                "variance": 246095148
              },
              {
                "average": 1.00000181,
                "count": 1657328,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001345414585,
                "variance": 1.810140407e-06
              },
              {
                "average": 1.00000362,
                "count": 1657328,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001902701832,
                "variance": 3.62027426e-06
              },
              {
                "average": 0.5372708359,
                "count": 1657328,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4986091002,
                "variance": 0.2486110348
              },
              {
                "average": 0.000146018169,
                "count": 1657328,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01208291918,
                "variance": 0.0001459969358
              },
              {
                "average": 6.495025125,
                "count": 1657328,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.626773954,
                "variance": 13.15348931
              },
              {
                "average": -4.447988873,
                "count": 1657328,
                "maximum": 16.37999916,
                "minimum": -13.29599953,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.035034571,
                "variance": 36.42164227
              },
              {
                "average": 0.5357599703,
                "count": 1657328,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987197355,
                "variance": 0.2487213746
              },
              {
                "average": 251.7190532,
                "count": 1657328,
                "maximum": 254,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.237645618,
                "variance": 1.531766676
              },
              {
                "average": 249074202.3,
                "count": 1657328,
                "maximum": 249074582,
                "minimum": 249073890.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 217.571898,
                "variance": 47337.53082
              },
              {
                "average": 0.5357599703,
                "count": 1657328,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987197355,
                "variance": 0.2487213746
              },
              {
                "average": 0,
                "count": 1657328,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1657328,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1657328,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.073497823,
                "count": 1657328,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2609519766,
                "variance": 0.0680959341
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353647.4882,
              2219499.1,
              1.093714613,
              -353313.3482,
              2219963.06,
              7.393714613
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353647.4881922897,
                    2219499.1004923345,
                    1.093714612566178
                  ],
                  [
                    -353647.4881922897,
                    2219963.0604923344,
                    1.093714612566178
                  ],
                  [
                    -353313.3481922897,
                    2219963.0604923344,
                    7.393714612566178
                  ],
                  [
                    -353313.3481922897,
                    2219499.1004923345,
                    7.393714612566178
                  ],
                  [
                    -353647.4881922897,
                    2219499.1004923345,
                    1.093714612566178
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:09:42+00:00",
            "end_time": "2019-08-05T20:58:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00200.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01307864895708,
              69.756541174399,
              1.14954264108035
            ],
            [
              -163.01472954592762,
              69.76085963681768,
              1.14954264108035
            ],
            [
              -163.00183409102033,
              69.76148832256958,
              1.98954264108035
            ],
            [
              -163.0001854974714,
              69.75716973207166,
              1.98954264108035
            ],
            [
              -163.01307864895708,
              69.756541174399,
              1.14954264108035
            ]
          ]
        ]
      },
      "bbox": [
        -163.0147295,
        69.75654117,
        1.149542641,
        -163.0001855,
        69.76148832,
        1.989542641
      ],
      "properties": {
        "datetime": "2019-08-05T21:16:24Z",
        "pc:count": 2762839,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352273.9214,
            "count": 2762839,
            "maximum": -352071.6093,
            "minimum": -352582.2093,
            "name": "X",
            "position": 0,
            "stddev": 119.4942146,
            "variance": 14278.86733
          },
          {
            "average": 2222281.611,
            "count": 2762839,
            "maximum": 2222549.088,
            "minimum": 2222070.388,
            "name": "Y",
            "position": 1,
            "stddev": 126.9072473,
            "variance": 16105.44942
          },
          {
            "average": 1.29228566,
            "count": 2762839,
            "maximum": 1.989542641,
            "minimum": 1.149542641,
            "name": "Z",
            "position": 2,
            "stddev": 0.04110163444,
            "variance": 0.001689344354
          },
          {
            "average": 15770.0651,
            "count": 2762839,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 8234.253485,
            "variance": 67802930.46
          },
          {
            "average": 1,
            "count": 2762839,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2762839,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5071381286,
            "count": 2762839,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499949135,
            "variance": 0.2499491376
          },
          {
            "average": 0.0003720810369,
            "count": 2762839,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01928581674,
            "variance": 0.0003719427273
          },
          {
            "average": 6.833123465,
            "count": 2762839,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.479490365,
            "variance": 12.1068532
          },
          {
            "average": 0.8204443221,
            "count": 2762839,
            "maximum": 16.62000084,
            "minimum": -15.41399956,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.576460796,
            "variance": 91.70860138
          },
          {
            "average": 0.5330585677,
            "count": 2762839,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989060244,
            "variance": 0.2489072212
          },
          {
            "average": 263.6568356,
            "count": 2762839,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.21169038,
            "variance": 331.6656666
          },
          {
            "average": 249074019.9,
            "count": 2762839,
            "maximum": 249074984.8,
            "minimum": 249071306,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1370.710131,
            "variance": 1878846.264
          },
          {
            "average": 0.5330585677,
            "count": 2762839,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989060244,
            "variance": 0.2489072212
          },
          {
            "average": 0,
            "count": 2762839,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2762839,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2762839,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1845666722,
            "count": 2762839,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3879457052,
            "variance": 0.1505018702
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352582.2093,
          2222070.388,
          1.149542641,
          -352071.6093,
          2222549.088,
          1.989542641
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352582.209325347,
                2222070.388057511,
                1.14954264108035
              ],
              [
                -352582.209325347,
                2222549.088057511,
                1.14954264108035
              ],
              [
                -352071.609325347,
                2222549.088057511,
                1.98954264108035
              ],
              [
                -352071.609325347,
                2222070.388057511,
                1.98954264108035
              ],
              [
                -352582.209325347,
                2222070.388057511,
                1.14954264108035
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:16:24+00:00",
        "end_time": "2019-08-05T20:15:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00200.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00200.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00200.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00200.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0147295,
            69.75654117,
            1.149542641,
            -163.0001855,
            69.76148832,
            1.989542641
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01307864895708,
                  69.756541174399,
                  1.14954264108035
                ],
                [
                  -163.01472954592762,
                  69.76085963681768,
                  1.14954264108035
                ],
                [
                  -163.00183409102033,
                  69.76148832256958,
                  1.98954264108035
                ],
                [
                  -163.0001854974714,
                  69.75716973207166,
                  1.98954264108035
                ],
                [
                  -163.01307864895708,
                  69.756541174399,
                  1.14954264108035
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00200.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00200.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:16:24Z",
            "pc:count": 2762839,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352273.9214,
                "count": 2762839,
                "maximum": -352071.6093,
                "minimum": -352582.2093,
                "name": "X",
                "position": 0,
                "stddev": 119.4942146,
                "variance": 14278.86733
              },
              {
                "average": 2222281.611,
                "count": 2762839,
                "maximum": 2222549.088,
                "minimum": 2222070.388,
                "name": "Y",
                "position": 1,
                "stddev": 126.9072473,
                "variance": 16105.44942
              },
              {
                "average": 1.29228566,
                "count": 2762839,
                "maximum": 1.989542641,
                "minimum": 1.149542641,
                "name": "Z",
                "position": 2,
                "stddev": 0.04110163444,
                "variance": 0.001689344354
              },
              {
                "average": 15770.0651,
                "count": 2762839,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 8234.253485,
                "variance": 67802930.46
              },
              {
                "average": 1,
                "count": 2762839,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2762839,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5071381286,
                "count": 2762839,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499949135,
                "variance": 0.2499491376
              },
              {
                "average": 0.0003720810369,
                "count": 2762839,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01928581674,
                "variance": 0.0003719427273
              },
              {
                "average": 6.833123465,
                "count": 2762839,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.479490365,
                "variance": 12.1068532
              },
              {
                "average": 0.8204443221,
                "count": 2762839,
                "maximum": 16.62000084,
                "minimum": -15.41399956,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.576460796,
                "variance": 91.70860138
              },
              {
                "average": 0.5330585677,
                "count": 2762839,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989060244,
                "variance": 0.2489072212
              },
              {
                "average": 263.6568356,
                "count": 2762839,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.21169038,
                "variance": 331.6656666
              },
              {
                "average": 249074019.9,
                "count": 2762839,
                "maximum": 249074984.8,
                "minimum": 249071306,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1370.710131,
                "variance": 1878846.264
              },
              {
                "average": 0.5330585677,
                "count": 2762839,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989060244,
                "variance": 0.2489072212
              },
              {
                "average": 0,
                "count": 2762839,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2762839,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2762839,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1845666722,
                "count": 2762839,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3879457052,
                "variance": 0.1505018702
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352582.2093,
              2222070.388,
              1.149542641,
              -352071.6093,
              2222549.088,
              1.989542641
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352582.209325347,
                    2222070.388057511,
                    1.14954264108035
                  ],
                  [
                    -352582.209325347,
                    2222549.088057511,
                    1.14954264108035
                  ],
                  [
                    -352071.609325347,
                    2222549.088057511,
                    1.98954264108035
                  ],
                  [
                    -352071.609325347,
                    2222070.388057511,
                    1.98954264108035
                  ],
                  [
                    -352582.209325347,
                    2222070.388057511,
                    1.14954264108035
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:16:24+00:00",
            "end_time": "2019-08-05T20:15:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00202.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.9894900089746,
              69.75667143718297,
              1.298576410326579
            ],
            [
              -162.9912180210078,
              69.76120356647797,
              1.298576410326579
            ],
            [
              -162.9782409324794,
              69.76183454948844,
              24.498576410326578
            ],
            [
              -162.97651535339384,
              69.75730228528495,
              24.498576410326578
            ],
            [
              -162.9894900089746,
              69.75667143718297,
              1.298576410326579
            ]
          ]
        ]
      },
      "bbox": [
        -162.991218,
        69.75667144,
        1.29857641,
        -162.9765154,
        69.76183455,
        24.49857641
      ],
      "properties": {
        "datetime": "2019-08-05T21:22:13Z",
        "pc:count": 3738311,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351418.2867,
            "count": 3738311,
            "maximum": -351149.3659,
            "minimum": -351663.1659,
            "name": "X",
            "position": 0,
            "stddev": 129.9204236,
            "variance": 16879.31648
          },
          {
            "average": 2222220.62,
            "count": 3738311,
            "maximum": 2222461.853,
            "minimum": 2221959.493,
            "name": "Y",
            "position": 1,
            "stddev": 130.6231327,
            "variance": 17062.40281
          },
          {
            "average": 2.219310881,
            "count": 3738311,
            "maximum": 24.49857641,
            "minimum": 1.29857641,
            "name": "Z",
            "position": 2,
            "stddev": 1.022426997,
            "variance": 1.045356963
          },
          {
            "average": 26229.96195,
            "count": 3738311,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 15917.75081,
            "variance": 253374790.9
          },
          {
            "average": 1.000001873,
            "count": 3738311,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001368393357,
            "variance": 1.872500379e-06
          },
          {
            "average": 1.000003745,
            "count": 3738311,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001935198632,
            "variance": 3.744993746e-06
          },
          {
            "average": 0,
            "count": 3738311,
            "maximum": 0,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3738311,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 4.702135537,
            "count": 3738311,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.84561407,
            "variance": 14.78874757
          },
          {
            "average": 2.046755551,
            "count": 3738311,
            "maximum": 21.49200058,
            "minimum": -21.09000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.901400132,
            "variance": 98.03772458
          },
          {
            "average": 0.5114630645,
            "count": 3738311,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998686477,
            "variance": 0.249868665
          },
          {
            "average": 267.6464045,
            "count": 3738311,
            "maximum": 302,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.75549285,
            "variance": 351.7685119
          },
          {
            "average": 249074270.4,
            "count": 3738311,
            "maximum": 249075333.5,
            "minimum": 249071307,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1537.861869,
            "variance": 2365019.128
          },
          {
            "average": 0.5114630645,
            "count": 3738311,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998686477,
            "variance": 0.249868665
          },
          {
            "average": 0,
            "count": 3738311,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3738311,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3738311,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2105838706,
            "count": 3738311,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4077233726,
            "variance": 0.1662383485
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351663.1659,
          2221959.493,
          1.29857641,
          -351149.3659,
          2222461.853,
          24.49857641
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351663.16590298514,
                2221959.492799749,
                1.298576410326579
              ],
              [
                -351663.16590298514,
                2222461.8527997495,
                1.298576410326579
              ],
              [
                -351149.3659029851,
                2222461.8527997495,
                24.498576410326578
              ],
              [
                -351149.3659029851,
                2221959.492799749,
                24.498576410326578
              ],
              [
                -351663.16590298514,
                2221959.492799749,
                1.298576410326579
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:22:13+00:00",
        "end_time": "2019-08-05T20:15:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00202.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00202.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00202.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00202.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.991218,
            69.75667144,
            1.29857641,
            -162.9765154,
            69.76183455,
            24.49857641
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.9894900089746,
                  69.75667143718297,
                  1.298576410326579
                ],
                [
                  -162.9912180210078,
                  69.76120356647797,
                  1.298576410326579
                ],
                [
                  -162.9782409324794,
                  69.76183454948844,
                  24.498576410326578
                ],
                [
                  -162.97651535339384,
                  69.75730228528495,
                  24.498576410326578
                ],
                [
                  -162.9894900089746,
                  69.75667143718297,
                  1.298576410326579
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00202.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00202.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:22:13Z",
            "pc:count": 3738311,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351418.2867,
                "count": 3738311,
                "maximum": -351149.3659,
                "minimum": -351663.1659,
                "name": "X",
                "position": 0,
                "stddev": 129.9204236,
                "variance": 16879.31648
              },
              {
                "average": 2222220.62,
                "count": 3738311,
                "maximum": 2222461.853,
                "minimum": 2221959.493,
                "name": "Y",
                "position": 1,
                "stddev": 130.6231327,
                "variance": 17062.40281
              },
              {
                "average": 2.219310881,
                "count": 3738311,
                "maximum": 24.49857641,
                "minimum": 1.29857641,
                "name": "Z",
                "position": 2,
                "stddev": 1.022426997,
                "variance": 1.045356963
              },
              {
                "average": 26229.96195,
                "count": 3738311,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 15917.75081,
                "variance": 253374790.9
              },
              {
                "average": 1.000001873,
                "count": 3738311,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001368393357,
                "variance": 1.872500379e-06
              },
              {
                "average": 1.000003745,
                "count": 3738311,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001935198632,
                "variance": 3.744993746e-06
              },
              {
                "average": 0,
                "count": 3738311,
                "maximum": 0,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3738311,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 4.702135537,
                "count": 3738311,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.84561407,
                "variance": 14.78874757
              },
              {
                "average": 2.046755551,
                "count": 3738311,
                "maximum": 21.49200058,
                "minimum": -21.09000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.901400132,
                "variance": 98.03772458
              },
              {
                "average": 0.5114630645,
                "count": 3738311,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998686477,
                "variance": 0.249868665
              },
              {
                "average": 267.6464045,
                "count": 3738311,
                "maximum": 302,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.75549285,
                "variance": 351.7685119
              },
              {
                "average": 249074270.4,
                "count": 3738311,
                "maximum": 249075333.5,
                "minimum": 249071307,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1537.861869,
                "variance": 2365019.128
              },
              {
                "average": 0.5114630645,
                "count": 3738311,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998686477,
                "variance": 0.249868665
              },
              {
                "average": 0,
                "count": 3738311,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3738311,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3738311,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2105838706,
                "count": 3738311,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4077233726,
                "variance": 0.1662383485
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351663.1659,
              2221959.493,
              1.29857641,
              -351149.3659,
              2222461.853,
              24.49857641
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351663.16590298514,
                    2221959.492799749,
                    1.298576410326579
                  ],
                  [
                    -351663.16590298514,
                    2222461.8527997495,
                    1.298576410326579
                  ],
                  [
                    -351149.3659029851,
                    2222461.8527997495,
                    24.498576410326578
                  ],
                  [
                    -351149.3659029851,
                    2221959.492799749,
                    24.498576410326578
                  ],
                  [
                    -351663.16590298514,
                    2221959.492799749,
                    1.298576410326579
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:22:13+00:00",
            "end_time": "2019-08-05T20:15:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00155.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98892614344638,
              69.74437695825489,
              3.522756137499699
            ],
            [
              -162.99065294635378,
              69.74890827166017,
              3.522756137499699
            ],
            [
              -162.97767398250593,
              69.74953959367302,
              6.762756137499699
            ],
            [
              -162.97594961135565,
              69.74500814540075,
              6.762756137499699
            ],
            [
              -162.98892614344638,
              69.74437695825489,
              3.522756137499699
            ]
          ]
        ]
      },
      "bbox": [
        -162.9906529,
        69.74437696,
        3.522756137,
        -162.9759496,
        69.74953959,
        6.762756137
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:34Z",
        "pc:count": 4650564,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351577.7315,
            "count": 4650564,
            "maximum": -351309.3202,
            "minimum": -351823.4602,
            "name": "X",
            "position": 0,
            "stddev": 131.5713547,
            "variance": 17311.02138
          },
          {
            "average": 2220872.887,
            "count": 4650564,
            "maximum": 2221120.798,
            "minimum": 2220618.498,
            "name": "Y",
            "position": 1,
            "stddev": 128.7318513,
            "variance": 16571.88954
          },
          {
            "average": 4.172986617,
            "count": 4650564,
            "maximum": 6.762756137,
            "minimum": 3.522756137,
            "name": "Z",
            "position": 2,
            "stddev": 0.5322360025,
            "variance": 0.2832751623
          },
          {
            "average": 35889.26704,
            "count": 4650564,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 15299.87381,
            "variance": 234086138.8
          },
          {
            "average": 1,
            "count": 4650564,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4650564,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5020462034,
            "count": 4650564,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999958668,
            "variance": 0.2499958668
          },
          {
            "average": 0.0003685574481,
            "count": 4650564,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01919431407,
            "variance": 0.0003684216927
          },
          {
            "average": 1.213915344,
            "count": 4650564,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4106651547,
            "variance": 0.1686458692
          },
          {
            "average": 0.2653119153,
            "count": 4650564,
            "maximum": 21.45000076,
            "minimum": -16.05599976,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.12550689,
            "variance": 102.5258898
          },
          {
            "average": 0.5079085031,
            "count": 4650564,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999375054,
            "variance": 0.2499375093
          },
          {
            "average": 266.6825452,
            "count": 4650564,
            "maximum": 301,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.72841134,
            "variance": 314.2965687
          },
          {
            "average": 249074430.8,
            "count": 4650564,
            "maximum": 249075474.5,
            "minimum": 249071327.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1507.930212,
            "variance": 2273853.524
          },
          {
            "average": 0.5079085031,
            "count": 4650564,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999375054,
            "variance": 0.2499375093
          },
          {
            "average": 0,
            "count": 4650564,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4650564,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4650564,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2085488986,
            "count": 4650564,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4062712037,
            "variance": 0.165056291
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351823.4602,
          2220618.498,
          3.522756137,
          -351309.3202,
          2221120.798,
          6.762756137
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351823.46021708724,
                2220618.497844886,
                3.522756137499699
              ],
              [
                -351823.46021708724,
                2221120.797844886,
                3.522756137499699
              ],
              [
                -351309.3202170872,
                2221120.797844886,
                6.762756137499699
              ],
              [
                -351309.3202170872,
                2220618.497844886,
                6.762756137499699
              ],
              [
                -351823.46021708724,
                2220618.497844886,
                3.522756137499699
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:34+00:00",
        "end_time": "2019-08-05T20:15:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00155.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00155.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00155.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00155.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9906529,
            69.74437696,
            3.522756137,
            -162.9759496,
            69.74953959,
            6.762756137
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98892614344638,
                  69.74437695825489,
                  3.522756137499699
                ],
                [
                  -162.99065294635378,
                  69.74890827166017,
                  3.522756137499699
                ],
                [
                  -162.97767398250593,
                  69.74953959367302,
                  6.762756137499699
                ],
                [
                  -162.97594961135565,
                  69.74500814540075,
                  6.762756137499699
                ],
                [
                  -162.98892614344638,
                  69.74437695825489,
                  3.522756137499699
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00155.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00155.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:34Z",
            "pc:count": 4650564,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351577.7315,
                "count": 4650564,
                "maximum": -351309.3202,
                "minimum": -351823.4602,
                "name": "X",
                "position": 0,
                "stddev": 131.5713547,
                "variance": 17311.02138
              },
              {
                "average": 2220872.887,
                "count": 4650564,
                "maximum": 2221120.798,
                "minimum": 2220618.498,
                "name": "Y",
                "position": 1,
                "stddev": 128.7318513,
                "variance": 16571.88954
              },
              {
                "average": 4.172986617,
                "count": 4650564,
                "maximum": 6.762756137,
                "minimum": 3.522756137,
                "name": "Z",
                "position": 2,
                "stddev": 0.5322360025,
                "variance": 0.2832751623
              },
              {
                "average": 35889.26704,
                "count": 4650564,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 15299.87381,
                "variance": 234086138.8
              },
              {
                "average": 1,
                "count": 4650564,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4650564,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5020462034,
                "count": 4650564,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999958668,
                "variance": 0.2499958668
              },
              {
                "average": 0.0003685574481,
                "count": 4650564,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01919431407,
                "variance": 0.0003684216927
              },
              {
                "average": 1.213915344,
                "count": 4650564,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4106651547,
                "variance": 0.1686458692
              },
              {
                "average": 0.2653119153,
                "count": 4650564,
                "maximum": 21.45000076,
                "minimum": -16.05599976,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.12550689,
                "variance": 102.5258898
              },
              {
                "average": 0.5079085031,
                "count": 4650564,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999375054,
                "variance": 0.2499375093
              },
              {
                "average": 266.6825452,
                "count": 4650564,
                "maximum": 301,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.72841134,
                "variance": 314.2965687
              },
              {
                "average": 249074430.8,
                "count": 4650564,
                "maximum": 249075474.5,
                "minimum": 249071327.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1507.930212,
                "variance": 2273853.524
              },
              {
                "average": 0.5079085031,
                "count": 4650564,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999375054,
                "variance": 0.2499375093
              },
              {
                "average": 0,
                "count": 4650564,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4650564,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4650564,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2085488986,
                "count": 4650564,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4062712037,
                "variance": 0.165056291
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351823.4602,
              2220618.498,
              3.522756137,
              -351309.3202,
              2221120.798,
              6.762756137
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351823.46021708724,
                    2220618.497844886,
                    3.522756137499699
                  ],
                  [
                    -351823.46021708724,
                    2221120.797844886,
                    3.522756137499699
                  ],
                  [
                    -351309.3202170872,
                    2221120.797844886,
                    6.762756137499699
                  ],
                  [
                    -351309.3202170872,
                    2220618.497844886,
                    6.762756137499699
                  ],
                  [
                    -351823.46021708724,
                    2220618.497844886,
                    3.522756137499699
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:34+00:00",
            "end_time": "2019-08-05T20:15:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00169.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01619380574854,
              69.74868260934372,
              1.099161218541346
            ],
            [
              -163.01776124868908,
              69.75278256795042,
              1.099161218541346
            ],
            [
              -163.01319267683627,
              69.75300554590615,
              3.519161218541346
            ],
            [
              -163.01162600839365,
              69.74890554419085,
              3.519161218541346
            ],
            [
              -163.01619380574854,
              69.74868260934372,
              1.099161218541346
            ]
          ]
        ]
      },
      "bbox": [
        -163.0177612,
        69.74868261,
        1.099161219,
        -163.011626,
        69.75300555,
        3.519161219
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:53Z",
        "pc:count": 989686,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352716.4954,
            "count": 989686,
            "maximum": -352639.1839,
            "minimum": -352820.1439,
            "name": "X",
            "position": 0,
            "stddev": 36.82771484,
            "variance": 1356.28058
          },
          {
            "average": 2221437.804,
            "count": 989686,
            "maximum": 2221686.238,
            "minimum": 2221231.738,
            "name": "Y",
            "position": 1,
            "stddev": 128.1633682,
            "variance": 16425.84896
          },
          {
            "average": 1.278804176,
            "count": 989686,
            "maximum": 3.519161219,
            "minimum": 1.099161219,
            "name": "Z",
            "position": 2,
            "stddev": 0.1086825197,
            "variance": 0.01181189008
          },
          {
            "average": 12426.2488,
            "count": 989686,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 9097.800945,
            "variance": 82769982.03
          },
          {
            "average": 1.00000101,
            "count": 989686,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001005197238,
            "variance": 1.010421487e-06
          },
          {
            "average": 1.000002021,
            "count": 989686,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001421562849,
            "variance": 2.020840933e-06
          },
          {
            "average": 0.4946629537,
            "count": 989686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999717677,
            "variance": 0.2499717685
          },
          {
            "average": 0.0003829497437,
            "count": 989686,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01956536429,
            "variance": 0.0003828034799
          },
          {
            "average": 7.519698167,
            "count": 989686,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.069273747,
            "variance": 9.420441337
          },
          {
            "average": -1.120584763,
            "count": 989686,
            "maximum": 12.99600029,
            "minimum": -16.48200035,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.00001275,
            "variance": 121.0002804
          },
          {
            "average": 0.5105285919,
            "count": 989686,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499889389,
            "variance": 0.2498894012
          },
          {
            "average": 259.2012032,
            "count": 989686,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.19093721,
            "variance": 230.7645734
          },
          {
            "average": 249074135.9,
            "count": 989686,
            "maximum": 249075493.1,
            "minimum": 249071320.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1080.75977,
            "variance": 1168041.681
          },
          {
            "average": 0.5105285919,
            "count": 989686,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499889389,
            "variance": 0.2498894012
          },
          {
            "average": 0,
            "count": 989686,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 989686,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 989686,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1548531554,
            "count": 989686,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3617648241,
            "variance": 0.1308737879
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352820.1439,
          2221231.738,
          1.099161219,
          -352639.1839,
          2221686.238,
          3.519161219
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352820.1438768879,
                2221231.738063747,
                1.099161218541346
              ],
              [
                -352820.1438768879,
                2221686.238063747,
                1.099161218541346
              ],
              [
                -352639.18387688795,
                2221686.238063747,
                3.519161218541346
              ],
              [
                -352639.18387688795,
                2221231.738063747,
                3.519161218541346
              ],
              [
                -352820.1438768879,
                2221231.738063747,
                1.099161218541346
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:53+00:00",
        "end_time": "2019-08-05T20:15:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00169.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00169.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00169.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00169.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0177612,
            69.74868261,
            1.099161219,
            -163.011626,
            69.75300555,
            3.519161219
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01619380574854,
                  69.74868260934372,
                  1.099161218541346
                ],
                [
                  -163.01776124868908,
                  69.75278256795042,
                  1.099161218541346
                ],
                [
                  -163.01319267683627,
                  69.75300554590615,
                  3.519161218541346
                ],
                [
                  -163.01162600839365,
                  69.74890554419085,
                  3.519161218541346
                ],
                [
                  -163.01619380574854,
                  69.74868260934372,
                  1.099161218541346
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00169.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00169.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:53Z",
            "pc:count": 989686,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352716.4954,
                "count": 989686,
                "maximum": -352639.1839,
                "minimum": -352820.1439,
                "name": "X",
                "position": 0,
                "stddev": 36.82771484,
                "variance": 1356.28058
              },
              {
                "average": 2221437.804,
                "count": 989686,
                "maximum": 2221686.238,
                "minimum": 2221231.738,
                "name": "Y",
                "position": 1,
                "stddev": 128.1633682,
                "variance": 16425.84896
              },
              {
                "average": 1.278804176,
                "count": 989686,
                "maximum": 3.519161219,
                "minimum": 1.099161219,
                "name": "Z",
                "position": 2,
                "stddev": 0.1086825197,
                "variance": 0.01181189008
              },
              {
                "average": 12426.2488,
                "count": 989686,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 9097.800945,
                "variance": 82769982.03
              },
              {
                "average": 1.00000101,
                "count": 989686,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001005197238,
                "variance": 1.010421487e-06
              },
              {
                "average": 1.000002021,
                "count": 989686,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001421562849,
                "variance": 2.020840933e-06
              },
              {
                "average": 0.4946629537,
                "count": 989686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999717677,
                "variance": 0.2499717685
              },
              {
                "average": 0.0003829497437,
                "count": 989686,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01956536429,
                "variance": 0.0003828034799
              },
              {
                "average": 7.519698167,
                "count": 989686,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.069273747,
                "variance": 9.420441337
              },
              {
                "average": -1.120584763,
                "count": 989686,
                "maximum": 12.99600029,
                "minimum": -16.48200035,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.00001275,
                "variance": 121.0002804
              },
              {
                "average": 0.5105285919,
                "count": 989686,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499889389,
                "variance": 0.2498894012
              },
              {
                "average": 259.2012032,
                "count": 989686,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.19093721,
                "variance": 230.7645734
              },
              {
                "average": 249074135.9,
                "count": 989686,
                "maximum": 249075493.1,
                "minimum": 249071320.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1080.75977,
                "variance": 1168041.681
              },
              {
                "average": 0.5105285919,
                "count": 989686,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499889389,
                "variance": 0.2498894012
              },
              {
                "average": 0,
                "count": 989686,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 989686,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 989686,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1548531554,
                "count": 989686,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3617648241,
                "variance": 0.1308737879
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352820.1439,
              2221231.738,
              1.099161219,
              -352639.1839,
              2221686.238,
              3.519161219
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352820.1438768879,
                    2221231.738063747,
                    1.099161218541346
                  ],
                  [
                    -352820.1438768879,
                    2221686.238063747,
                    1.099161218541346
                  ],
                  [
                    -352639.18387688795,
                    2221686.238063747,
                    3.519161218541346
                  ],
                  [
                    -352639.18387688795,
                    2221231.738063747,
                    3.519161218541346
                  ],
                  [
                    -352820.1438768879,
                    2221231.738063747,
                    1.099161218541346
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:53+00:00",
            "end_time": "2019-08-05T20:15:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00057.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.99543799756597,
              69.72195918860668,
              1.012771696383011
            ],
            [
              -162.99634480766042,
              69.72433919419225,
              1.012771696383011
            ],
            [
              -162.98829592749246,
              69.72473142638721,
              1.412771696383011
            ],
            [
              -162.98738990878707,
              69.72235137684567,
              1.412771696383011
            ],
            [
              -162.99543799756597,
              69.72195918860668,
              1.012771696383011
            ]
          ]
        ]
      },
      "bbox": [
        -162.9963448,
        69.72195919,
        1.012771696,
        -162.9873899,
        69.72473143,
        1.412771696
      ],
      "properties": {
        "datetime": "2019-08-05T21:19:18Z",
        "pc:count": 628117,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352208.7663,
            "count": 628117,
            "maximum": -352090.1157,
            "minimum": -352409.2957,
            "name": "X",
            "position": 0,
            "stddev": 72.13466548,
            "variance": 5203.409964
          },
          {
            "average": 2218381.662,
            "count": 628117,
            "maximum": 2218476.96,
            "minimum": 2218213.1,
            "name": "Y",
            "position": 1,
            "stddev": 56.67491399,
            "variance": 3212.045876
          },
          {
            "average": 1.21665083,
            "count": 628117,
            "maximum": 1.412771696,
            "minimum": 1.012771696,
            "name": "Z",
            "position": 2,
            "stddev": 0.03580703475,
            "variance": 0.001282143738
          },
          {
            "average": 10668.78768,
            "count": 628117,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 7807.57219,
            "variance": 60958183.51
          },
          {
            "average": 1,
            "count": 628117,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 628117,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022344563,
            "count": 628117,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999954052,
            "variance": 0.2499954052
          },
          {
            "average": 0.000347069097,
            "count": 628117,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01862657221,
            "variance": 0.0003469491924
          },
          {
            "average": 7.629771205,
            "count": 628117,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.896650849,
            "variance": 8.390586141
          },
          {
            "average": 3.250780622,
            "count": 628117,
            "maximum": 21.29400063,
            "minimum": -15.6960001,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.381973197,
            "variance": 88.02142107
          },
          {
            "average": 0.5121434382,
            "count": 628117,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998529131,
            "variance": 0.2498529347
          },
          {
            "average": 270.6525982,
            "count": 628117,
            "maximum": 307,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.90103024,
            "variance": 479.6551255
          },
          {
            "average": 249074088.2,
            "count": 628117,
            "maximum": 249075158,
            "minimum": 249071368.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1376.864565,
            "variance": 1895756.031
          },
          {
            "average": 0.5121434382,
            "count": 628117,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998529131,
            "variance": 0.2498529347
          },
          {
            "average": 0,
            "count": 628117,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 628117,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 628117,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08914421995,
            "count": 628117,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2849520263,
            "variance": 0.08119765727
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352409.2957,
          2218213.1,
          1.012771696,
          -352090.1157,
          2218476.96,
          1.412771696
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352409.29567644256,
                2218213.100399609,
                1.012771696383011
              ],
              [
                -352409.29567644256,
                2218476.9603996095,
                1.012771696383011
              ],
              [
                -352090.1156764425,
                2218476.9603996095,
                1.412771696383011
              ],
              [
                -352090.1156764425,
                2218213.100399609,
                1.412771696383011
              ],
              [
                -352409.29567644256,
                2218213.100399609,
                1.012771696383011
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:19:18+00:00",
        "end_time": "2019-08-05T20:16:08+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00057.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00057.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00057.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00057.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9963448,
            69.72195919,
            1.012771696,
            -162.9873899,
            69.72473143,
            1.412771696
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.99543799756597,
                  69.72195918860668,
                  1.012771696383011
                ],
                [
                  -162.99634480766042,
                  69.72433919419225,
                  1.012771696383011
                ],
                [
                  -162.98829592749246,
                  69.72473142638721,
                  1.412771696383011
                ],
                [
                  -162.98738990878707,
                  69.72235137684567,
                  1.412771696383011
                ],
                [
                  -162.99543799756597,
                  69.72195918860668,
                  1.012771696383011
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00057.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00057.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:19:18Z",
            "pc:count": 628117,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352208.7663,
                "count": 628117,
                "maximum": -352090.1157,
                "minimum": -352409.2957,
                "name": "X",
                "position": 0,
                "stddev": 72.13466548,
                "variance": 5203.409964
              },
              {
                "average": 2218381.662,
                "count": 628117,
                "maximum": 2218476.96,
                "minimum": 2218213.1,
                "name": "Y",
                "position": 1,
                "stddev": 56.67491399,
                "variance": 3212.045876
              },
              {
                "average": 1.21665083,
                "count": 628117,
                "maximum": 1.412771696,
                "minimum": 1.012771696,
                "name": "Z",
                "position": 2,
                "stddev": 0.03580703475,
                "variance": 0.001282143738
              },
              {
                "average": 10668.78768,
                "count": 628117,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 7807.57219,
                "variance": 60958183.51
              },
              {
                "average": 1,
                "count": 628117,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 628117,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022344563,
                "count": 628117,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999954052,
                "variance": 0.2499954052
              },
              {
                "average": 0.000347069097,
                "count": 628117,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01862657221,
                "variance": 0.0003469491924
              },
              {
                "average": 7.629771205,
                "count": 628117,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.896650849,
                "variance": 8.390586141
              },
              {
                "average": 3.250780622,
                "count": 628117,
                "maximum": 21.29400063,
                "minimum": -15.6960001,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.381973197,
                "variance": 88.02142107
              },
              {
                "average": 0.5121434382,
                "count": 628117,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998529131,
                "variance": 0.2498529347
              },
              {
                "average": 270.6525982,
                "count": 628117,
                "maximum": 307,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.90103024,
                "variance": 479.6551255
              },
              {
                "average": 249074088.2,
                "count": 628117,
                "maximum": 249075158,
                "minimum": 249071368.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1376.864565,
                "variance": 1895756.031
              },
              {
                "average": 0.5121434382,
                "count": 628117,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998529131,
                "variance": 0.2498529347
              },
              {
                "average": 0,
                "count": 628117,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 628117,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 628117,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08914421995,
                "count": 628117,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2849520263,
                "variance": 0.08119765727
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352409.2957,
              2218213.1,
              1.012771696,
              -352090.1157,
              2218476.96,
              1.412771696
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352409.29567644256,
                    2218213.100399609,
                    1.012771696383011
                  ],
                  [
                    -352409.29567644256,
                    2218476.9603996095,
                    1.012771696383011
                  ],
                  [
                    -352090.1156764425,
                    2218476.9603996095,
                    1.412771696383011
                  ],
                  [
                    -352090.1156764425,
                    2218213.100399609,
                    1.412771696383011
                  ],
                  [
                    -352409.29567644256,
                    2218213.100399609,
                    1.012771696383011
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:19:18+00:00",
            "end_time": "2019-08-05T20:16:08+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00058.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98711125510502,
              69.7198211733238,
              1.00697208602839
            ],
            [
              -162.9888355834882,
              69.72435104475252,
              1.00697208602839
            ],
            [
              -162.97653878708542,
              69.724949630923,
              3.34697208602839
            ],
            [
              -162.97481675982806,
              69.72041963183082,
              3.34697208602839
            ],
            [
              -162.98711125510502,
              69.7198211733238,
              1.00697208602839
            ]
          ]
        ]
      },
      "bbox": [
        -162.9888356,
        69.71982117,
        1.006972086,
        -162.9748168,
        69.72494963,
        3.346972086
      ],
      "properties": {
        "datetime": "2019-08-05T21:21:04Z",
        "pc:count": 2650683,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351858.6536,
            "count": 2650683,
            "maximum": -351629.1442,
            "minimum": -352116.7642,
            "name": "X",
            "position": 0,
            "stddev": 122.959336,
            "variance": 15118.9983
          },
          {
            "average": 2218241.866,
            "count": 2650683,
            "maximum": 2218438.419,
            "minimum": 2217936.219,
            "name": "Y",
            "position": 1,
            "stddev": 111.3974542,
            "variance": 12409.39279
          },
          {
            "average": 1.630787714,
            "count": 2650683,
            "maximum": 3.346972086,
            "minimum": 1.006972086,
            "name": "Z",
            "position": 2,
            "stddev": 0.6322570567,
            "variance": 0.3997489858
          },
          {
            "average": 24605.56706,
            "count": 2650683,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 18064.98409,
            "variance": 326343650.3
          },
          {
            "average": 1,
            "count": 2650683,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 2650683,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4942948666,
            "count": 2650683,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999675447,
            "variance": 0.2499675458
          },
          {
            "average": 0.0003546255814,
            "count": 2650683,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01882816921,
            "variance": 0.0003544999558
          },
          {
            "average": 5.5133824,
            "count": 2650683,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.837215093,
            "variance": 14.72421967
          },
          {
            "average": 1.760072629,
            "count": 2650683,
            "maximum": 21.57600021,
            "minimum": -16.00200081,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.458653572,
            "variance": 71.54882025
          },
          {
            "average": 0.4994124156,
            "count": 2650683,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999997491,
            "variance": 0.2499997491
          },
          {
            "average": 271.876333,
            "count": 2650683,
            "maximum": 307,
            "minimum": 256,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.48799738,
            "variance": 461.7340314
          },
          {
            "average": 249074100.4,
            "count": 2650683,
            "maximum": 249075264.1,
            "minimum": 249071369.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1514.621806,
            "variance": 2294079.214
          },
          {
            "average": 0.4994124156,
            "count": 2650683,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999997491,
            "variance": 0.2499997491
          },
          {
            "average": 0,
            "count": 2650683,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2650683,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2650683,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.09471332483,
            "count": 2650683,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2928186184,
            "variance": 0.08574274328
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352116.7642,
          2217936.219,
          1.006972086,
          -351629.1442,
          2218438.419,
          3.346972086
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352116.7642159515,
                2217936.219206099,
                1.00697208602839
              ],
              [
                -352116.7642159515,
                2218438.419206099,
                1.00697208602839
              ],
              [
                -351629.1442159515,
                2218438.419206099,
                3.34697208602839
              ],
              [
                -351629.1442159515,
                2217936.219206099,
                3.34697208602839
              ],
              [
                -352116.7642159515,
                2217936.219206099,
                1.00697208602839
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:21:04+00:00",
        "end_time": "2019-08-05T20:16:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00058.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00058.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00058.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00058.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9888356,
            69.71982117,
            1.006972086,
            -162.9748168,
            69.72494963,
            3.346972086
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98711125510502,
                  69.7198211733238,
                  1.00697208602839
                ],
                [
                  -162.9888355834882,
                  69.72435104475252,
                  1.00697208602839
                ],
                [
                  -162.97653878708542,
                  69.724949630923,
                  3.34697208602839
                ],
                [
                  -162.97481675982806,
                  69.72041963183082,
                  3.34697208602839
                ],
                [
                  -162.98711125510502,
                  69.7198211733238,
                  1.00697208602839
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00058.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00058.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:21:04Z",
            "pc:count": 2650683,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351858.6536,
                "count": 2650683,
                "maximum": -351629.1442,
                "minimum": -352116.7642,
                "name": "X",
                "position": 0,
                "stddev": 122.959336,
                "variance": 15118.9983
              },
              {
                "average": 2218241.866,
                "count": 2650683,
                "maximum": 2218438.419,
                "minimum": 2217936.219,
                "name": "Y",
                "position": 1,
                "stddev": 111.3974542,
                "variance": 12409.39279
              },
              {
                "average": 1.630787714,
                "count": 2650683,
                "maximum": 3.346972086,
                "minimum": 1.006972086,
                "name": "Z",
                "position": 2,
                "stddev": 0.6322570567,
                "variance": 0.3997489858
              },
              {
                "average": 24605.56706,
                "count": 2650683,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 18064.98409,
                "variance": 326343650.3
              },
              {
                "average": 1,
                "count": 2650683,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 2650683,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4942948666,
                "count": 2650683,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999675447,
                "variance": 0.2499675458
              },
              {
                "average": 0.0003546255814,
                "count": 2650683,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01882816921,
                "variance": 0.0003544999558
              },
              {
                "average": 5.5133824,
                "count": 2650683,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.837215093,
                "variance": 14.72421967
              },
              {
                "average": 1.760072629,
                "count": 2650683,
                "maximum": 21.57600021,
                "minimum": -16.00200081,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.458653572,
                "variance": 71.54882025
              },
              {
                "average": 0.4994124156,
                "count": 2650683,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999997491,
                "variance": 0.2499997491
              },
              {
                "average": 271.876333,
                "count": 2650683,
                "maximum": 307,
                "minimum": 256,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.48799738,
                "variance": 461.7340314
              },
              {
                "average": 249074100.4,
                "count": 2650683,
                "maximum": 249075264.1,
                "minimum": 249071369.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1514.621806,
                "variance": 2294079.214
              },
              {
                "average": 0.4994124156,
                "count": 2650683,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999997491,
                "variance": 0.2499997491
              },
              {
                "average": 0,
                "count": 2650683,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2650683,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2650683,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.09471332483,
                "count": 2650683,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2928186184,
                "variance": 0.08574274328
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352116.7642,
              2217936.219,
              1.006972086,
              -351629.1442,
              2218438.419,
              3.346972086
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352116.7642159515,
                    2217936.219206099,
                    1.00697208602839
                  ],
                  [
                    -352116.7642159515,
                    2218438.419206099,
                    1.00697208602839
                  ],
                  [
                    -351629.1442159515,
                    2218438.419206099,
                    3.34697208602839
                  ],
                  [
                    -351629.1442159515,
                    2217936.219206099,
                    3.34697208602839
                  ],
                  [
                    -352116.7642159515,
                    2217936.219206099,
                    1.00697208602839
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:21:04+00:00",
            "end_time": "2019-08-05T20:16:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00102.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0238149473209,
              69.73188005033596,
              1.102983417512462
            ],
            [
              -163.02554756790698,
              69.7364109355557,
              1.102983417512462
            ],
            [
              -163.01257283197245,
              69.73704482757788,
              275.3829834175125
            ],
            [
              -163.01084264063363,
              69.73251380704622,
              275.3829834175125
            ],
            [
              -163.0238149473209,
              69.73188005033596,
              1.102983417512462
            ]
          ]
        ]
      },
      "bbox": [
        -163.0255476,
        69.73188005,
        1.102983418,
        -163.0108426,
        69.73704483,
        275.3829834
      ],
      "properties": {
        "datetime": "2019-08-05T21:13:10Z",
        "pc:count": 5125505,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353118.4144,
            "count": 5125505,
            "maximum": -352852.2618,
            "minimum": -353366.5418,
            "name": "X",
            "position": 0,
            "stddev": 132.1445074,
            "variance": 17462.17083
          },
          {
            "average": 2219692.262,
            "count": 5125505,
            "maximum": 2219945.977,
            "minimum": 2219443.657,
            "name": "Y",
            "position": 1,
            "stddev": 129.0103744,
            "variance": 16643.67671
          },
          {
            "average": 6.192895742,
            "count": 5125505,
            "maximum": 275.3829834,
            "minimum": 1.102983418,
            "name": "Z",
            "position": 2,
            "stddev": 1.524410516,
            "variance": 2.323827421
          },
          {
            "average": 43230.36709,
            "count": 5125505,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15394.40984,
            "variance": 236987854.2
          },
          {
            "average": 1.000988586,
            "count": 5125505,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03202887054,
            "variance": 0.001025848548
          },
          {
            "average": 1.001977366,
            "count": 5125505,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.045696575,
            "variance": 0.002088176966
          },
          {
            "average": 0.4961515012,
            "count": 5125505,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999852376,
            "variance": 0.2499852378
          },
          {
            "average": 0.0004448342163,
            "count": 5125505,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02108640381,
            "variance": 0.0004446364256
          },
          {
            "average": 1.3370583,
            "count": 5125505,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.048682317,
            "variance": 1.099734602
          },
          {
            "average": -2.697700273,
            "count": 5125505,
            "maximum": 16.31999969,
            "minimum": -21.1079998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.94014063,
            "variance": 119.6866771
          },
          {
            "average": 0.4653127838,
            "count": 5125505,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987953945,
            "variance": 0.2487968456
          },
          {
            "average": 257.5723378,
            "count": 5125505,
            "maximum": 300,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.7135009,
            "variance": 216.4871087
          },
          {
            "average": 249074022.4,
            "count": 5125505,
            "maximum": 249074790.3,
            "minimum": 249071346.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 955.7493349,
            "variance": 913456.7912
          },
          {
            "average": 0.4653127838,
            "count": 5125505,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987953945,
            "variance": 0.2487968456
          },
          {
            "average": 0,
            "count": 5125505,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5125505,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5125505,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2253951562,
            "count": 5125505,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4178423313,
            "variance": 0.1745922138
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353366.5418,
          2219443.657,
          1.102983418,
          -352852.2618,
          2219945.977,
          275.3829834
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353366.5418111936,
                2219443.6568520567,
                1.102983417512462
              ],
              [
                -353366.5418111936,
                2219945.976852057,
                1.102983417512462
              ],
              [
                -352852.26181119354,
                2219945.976852057,
                275.3829834175125
              ],
              [
                -352852.26181119354,
                2219443.6568520567,
                275.3829834175125
              ],
              [
                -353366.5418111936,
                2219443.6568520567,
                1.102983417512462
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:13:10+00:00",
        "end_time": "2019-08-05T20:15:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00102.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00102.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00102.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00102.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0255476,
            69.73188005,
            1.102983418,
            -163.0108426,
            69.73704483,
            275.3829834
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0238149473209,
                  69.73188005033596,
                  1.102983417512462
                ],
                [
                  -163.02554756790698,
                  69.7364109355557,
                  1.102983417512462
                ],
                [
                  -163.01257283197245,
                  69.73704482757788,
                  275.3829834175125
                ],
                [
                  -163.01084264063363,
                  69.73251380704622,
                  275.3829834175125
                ],
                [
                  -163.0238149473209,
                  69.73188005033596,
                  1.102983417512462
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00102.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00102.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:13:10Z",
            "pc:count": 5125505,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353118.4144,
                "count": 5125505,
                "maximum": -352852.2618,
                "minimum": -353366.5418,
                "name": "X",
                "position": 0,
                "stddev": 132.1445074,
                "variance": 17462.17083
              },
              {
                "average": 2219692.262,
                "count": 5125505,
                "maximum": 2219945.977,
                "minimum": 2219443.657,
                "name": "Y",
                "position": 1,
                "stddev": 129.0103744,
                "variance": 16643.67671
              },
              {
                "average": 6.192895742,
                "count": 5125505,
                "maximum": 275.3829834,
                "minimum": 1.102983418,
                "name": "Z",
                "position": 2,
                "stddev": 1.524410516,
                "variance": 2.323827421
              },
              {
                "average": 43230.36709,
                "count": 5125505,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15394.40984,
                "variance": 236987854.2
              },
              {
                "average": 1.000988586,
                "count": 5125505,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03202887054,
                "variance": 0.001025848548
              },
              {
                "average": 1.001977366,
                "count": 5125505,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.045696575,
                "variance": 0.002088176966
              },
              {
                "average": 0.4961515012,
                "count": 5125505,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999852376,
                "variance": 0.2499852378
              },
              {
                "average": 0.0004448342163,
                "count": 5125505,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02108640381,
                "variance": 0.0004446364256
              },
              {
                "average": 1.3370583,
                "count": 5125505,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.048682317,
                "variance": 1.099734602
              },
              {
                "average": -2.697700273,
                "count": 5125505,
                "maximum": 16.31999969,
                "minimum": -21.1079998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.94014063,
                "variance": 119.6866771
              },
              {
                "average": 0.4653127838,
                "count": 5125505,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987953945,
                "variance": 0.2487968456
              },
              {
                "average": 257.5723378,
                "count": 5125505,
                "maximum": 300,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.7135009,
                "variance": 216.4871087
              },
              {
                "average": 249074022.4,
                "count": 5125505,
                "maximum": 249074790.3,
                "minimum": 249071346.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 955.7493349,
                "variance": 913456.7912
              },
              {
                "average": 0.4653127838,
                "count": 5125505,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987953945,
                "variance": 0.2487968456
              },
              {
                "average": 0,
                "count": 5125505,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5125505,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5125505,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2253951562,
                "count": 5125505,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4178423313,
                "variance": 0.1745922138
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353366.5418,
              2219443.657,
              1.102983418,
              -352852.2618,
              2219945.977,
              275.3829834
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353366.5418111936,
                    2219443.6568520567,
                    1.102983417512462
                  ],
                  [
                    -353366.5418111936,
                    2219945.976852057,
                    1.102983417512462
                  ],
                  [
                    -352852.26181119354,
                    2219945.976852057,
                    275.3829834175125
                  ],
                  [
                    -352852.26181119354,
                    2219443.6568520567,
                    275.3829834175125
                  ],
                  [
                    -353366.5418111936,
                    2219443.6568520567,
                    1.102983417512462
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:13:10+00:00",
            "end_time": "2019-08-05T20:15:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00069.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.03031315534412,
              69.72632365579409,
              1.074633867537831
            ],
            [
              -163.03104549318437,
              69.728237953824,
              1.074633867537831
            ],
            [
              -163.02392598228047,
              69.72858622015158,
              6.434633867537832
            ],
            [
              -163.0231942074824,
              69.72667189072256,
              6.434633867537832
            ],
            [
              -163.03031315534412,
              69.72632365579409,
              1.074633867537831
            ]
          ]
        ]
      },
      "bbox": [
        -163.0310455,
        69.72632366,
        1.074633868,
        -163.0231942,
        69.72858622,
        6.434633868
      ],
      "properties": {
        "datetime": "2019-08-05T21:09:25Z",
        "pc:count": 559354,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353523.9938,
            "count": 559354,
            "maximum": -353419.8751,
            "minimum": -353702.1751,
            "name": "X",
            "position": 0,
            "stddev": 64.55620394,
            "variance": 4167.503467
          },
          {
            "average": 2218993.894,
            "count": 559354,
            "maximum": 2219085.769,
            "minimum": 2218873.529,
            "name": "Y",
            "position": 1,
            "stddev": 51.99487207,
            "variance": 2703.466721
          },
          {
            "average": 1.262220047,
            "count": 559354,
            "maximum": 6.434633868,
            "minimum": 1.074633868,
            "name": "Z",
            "position": 2,
            "stddev": 0.1062311137,
            "variance": 0.01128504953
          },
          {
            "average": 18669.3915,
            "count": 559354,
            "maximum": 65535,
            "minimum": 1188,
            "name": "Intensity",
            "position": 3,
            "stddev": 7663.281348,
            "variance": 58725881.02
          },
          {
            "average": 1.000003576,
            "count": 559354,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001890911641,
            "variance": 3.575546835e-06
          },
          {
            "average": 1.000007151,
            "count": 559354,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002674148108,
            "variance": 7.151068101e-06
          },
          {
            "average": 0.5371428469,
            "count": 559354,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4986189461,
            "variance": 0.2486208534
          },
          {
            "average": 0.0001769898848,
            "count": 559354,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01330258906,
            "variance": 0.0001769588757
          },
          {
            "average": 5.959816145,
            "count": 559354,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.919110079,
            "variance": 15.35942381
          },
          {
            "average": -4.520534775,
            "count": 559354,
            "maximum": 16.2840004,
            "minimum": -13.30200005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.038491098,
            "variance": 36.46337474
          },
          {
            "average": 0.5343646421,
            "count": 559354,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988181194,
            "variance": 0.2488195162
          },
          {
            "average": 251.6847024,
            "count": 559354,
            "maximum": 254,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.268580038,
            "variance": 1.609295313
          },
          {
            "average": 249074196.4,
            "count": 559354,
            "maximum": 249074565.1,
            "minimum": 249073880.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 227.6012621,
            "variance": 51802.33449
          },
          {
            "average": 0.5343646421,
            "count": 559354,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988181194,
            "variance": 0.2488195162
          },
          {
            "average": 0,
            "count": 559354,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 559354,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 559354,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07205454864,
            "count": 559354,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2585784411,
            "variance": 0.0668628102
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353702.1751,
          2218873.529,
          1.074633868,
          -353419.8751,
          2219085.769,
          6.434633868
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353702.17510192393,
                2218873.52916027,
                1.074633867537831
              ],
              [
                -353702.17510192393,
                2219085.76916027,
                1.074633867537831
              ],
              [
                -353419.8751019239,
                2219085.76916027,
                6.434633867537832
              ],
              [
                -353419.8751019239,
                2218873.52916027,
                6.434633867537832
              ],
              [
                -353702.17510192393,
                2218873.52916027,
                1.074633867537831
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:09:25+00:00",
        "end_time": "2019-08-05T20:58:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00069.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00069.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00069.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00069.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0310455,
            69.72632366,
            1.074633868,
            -163.0231942,
            69.72858622,
            6.434633868
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.03031315534412,
                  69.72632365579409,
                  1.074633867537831
                ],
                [
                  -163.03104549318437,
                  69.728237953824,
                  1.074633867537831
                ],
                [
                  -163.02392598228047,
                  69.72858622015158,
                  6.434633867537832
                ],
                [
                  -163.0231942074824,
                  69.72667189072256,
                  6.434633867537832
                ],
                [
                  -163.03031315534412,
                  69.72632365579409,
                  1.074633867537831
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00069.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00069.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:09:25Z",
            "pc:count": 559354,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353523.9938,
                "count": 559354,
                "maximum": -353419.8751,
                "minimum": -353702.1751,
                "name": "X",
                "position": 0,
                "stddev": 64.55620394,
                "variance": 4167.503467
              },
              {
                "average": 2218993.894,
                "count": 559354,
                "maximum": 2219085.769,
                "minimum": 2218873.529,
                "name": "Y",
                "position": 1,
                "stddev": 51.99487207,
                "variance": 2703.466721
              },
              {
                "average": 1.262220047,
                "count": 559354,
                "maximum": 6.434633868,
                "minimum": 1.074633868,
                "name": "Z",
                "position": 2,
                "stddev": 0.1062311137,
                "variance": 0.01128504953
              },
              {
                "average": 18669.3915,
                "count": 559354,
                "maximum": 65535,
                "minimum": 1188,
                "name": "Intensity",
                "position": 3,
                "stddev": 7663.281348,
                "variance": 58725881.02
              },
              {
                "average": 1.000003576,
                "count": 559354,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001890911641,
                "variance": 3.575546835e-06
              },
              {
                "average": 1.000007151,
                "count": 559354,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002674148108,
                "variance": 7.151068101e-06
              },
              {
                "average": 0.5371428469,
                "count": 559354,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4986189461,
                "variance": 0.2486208534
              },
              {
                "average": 0.0001769898848,
                "count": 559354,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01330258906,
                "variance": 0.0001769588757
              },
              {
                "average": 5.959816145,
                "count": 559354,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.919110079,
                "variance": 15.35942381
              },
              {
                "average": -4.520534775,
                "count": 559354,
                "maximum": 16.2840004,
                "minimum": -13.30200005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.038491098,
                "variance": 36.46337474
              },
              {
                "average": 0.5343646421,
                "count": 559354,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988181194,
                "variance": 0.2488195162
              },
              {
                "average": 251.6847024,
                "count": 559354,
                "maximum": 254,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.268580038,
                "variance": 1.609295313
              },
              {
                "average": 249074196.4,
                "count": 559354,
                "maximum": 249074565.1,
                "minimum": 249073880.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 227.6012621,
                "variance": 51802.33449
              },
              {
                "average": 0.5343646421,
                "count": 559354,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988181194,
                "variance": 0.2488195162
              },
              {
                "average": 0,
                "count": 559354,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 559354,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 559354,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07205454864,
                "count": 559354,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2585784411,
                "variance": 0.0668628102
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353702.1751,
              2218873.529,
              1.074633868,
              -353419.8751,
              2219085.769,
              6.434633868
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353702.17510192393,
                    2218873.52916027,
                    1.074633867537831
                  ],
                  [
                    -353702.17510192393,
                    2219085.76916027,
                    1.074633867537831
                  ],
                  [
                    -353419.8751019239,
                    2219085.76916027,
                    6.434633867537832
                  ],
                  [
                    -353419.8751019239,
                    2218873.52916027,
                    6.434633867537832
                  ],
                  [
                    -353702.17510192393,
                    2218873.52916027,
                    1.074633867537831
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:09:25+00:00",
            "end_time": "2019-08-05T20:58:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00070.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0237276027042,
              69.72666128305873,
              1.01651702849392
            ],
            [
              -163.02433679872416,
              69.7282548710052,
              1.01651702849392
            ],
            [
              -163.01218162748017,
              69.72884884926232,
              6.996517028493921
            ],
            [
              -163.01157323174687,
              69.72725521673415,
              6.996517028493921
            ],
            [
              -163.0237276027042,
              69.72666128305873,
              1.01651702849392
            ]
          ]
        ]
      },
      "bbox": [
        -163.0243368,
        69.72666128,
        1.016517028,
        -163.0115732,
        69.72884885,
        6.996517028
      ],
      "properties": {
        "datetime": "2019-08-05T21:13:19Z",
        "pc:count": 1213199,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353233.299,
            "count": 1213199,
            "maximum": -352958.8362,
            "minimum": -353440.7962,
            "name": "X",
            "position": 0,
            "stddev": 134.9641761,
            "variance": 18215.32884
          },
          {
            "average": 2218965.422,
            "count": 1213199,
            "maximum": 2219051.893,
            "minimum": 2218875.213,
            "name": "Y",
            "position": 1,
            "stddev": 39.0934225,
            "variance": 1528.295683
          },
          {
            "average": 1.543128928,
            "count": 1213199,
            "maximum": 6.996517028,
            "minimum": 1.016517028,
            "name": "Z",
            "position": 2,
            "stddev": 1.11568935,
            "variance": 1.244762725
          },
          {
            "average": 16565.00735,
            "count": 1213199,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13347.91821,
            "variance": 178166920.6
          },
          {
            "average": 1.000062644,
            "count": 1213199,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007914570461,
            "variance": 6.264042558e-05
          },
          {
            "average": 1.000125289,
            "count": 1213199,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01119254227,
            "variance": 0.0001252730025
          },
          {
            "average": 0.49819774,
            "count": 1213199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999969579,
            "variance": 0.2499969579
          },
          {
            "average": 0.0004080122057,
            "count": 1213199,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02019519913,
            "variance": 0.000407846068
          },
          {
            "average": 6.373535586,
            "count": 1213199,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.690325613,
            "variance": 13.61850313
          },
          {
            "average": -1.101542347,
            "count": 1213199,
            "maximum": 16.29599953,
            "minimum": -20.86199951,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.776136931,
            "variance": 95.57285329
          },
          {
            "average": 0.4915854695,
            "count": 1213199,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999293967,
            "variance": 0.2499294017
          },
          {
            "average": 258.7842868,
            "count": 1213199,
            "maximum": 307,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.23498234,
            "variance": 297.0446161
          },
          {
            "average": 249074113.3,
            "count": 1213199,
            "maximum": 249074799.7,
            "minimum": 249071360.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 668.1369906,
            "variance": 446407.0383
          },
          {
            "average": 0.4915854695,
            "count": 1213199,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999293967,
            "variance": 0.2499294017
          },
          {
            "average": 0,
            "count": 1213199,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1213199,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1213199,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1331924936,
            "count": 1213199,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3397827959,
            "variance": 0.1154523484
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353440.7962,
          2218875.213,
          1.016517028,
          -352958.8362,
          2219051.893,
          6.996517028
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353440.7962039577,
                2218875.2133259303,
                1.01651702849392
              ],
              [
                -353440.7962039577,
                2219051.89332593,
                1.01651702849392
              ],
              [
                -352958.83620395773,
                2219051.89332593,
                6.996517028493921
              ],
              [
                -352958.83620395773,
                2218875.2133259303,
                6.996517028493921
              ],
              [
                -353440.7962039577,
                2218875.2133259303,
                1.01651702849392
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:13:19+00:00",
        "end_time": "2019-08-05T20:16:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00070.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00070.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00070.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00070.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0243368,
            69.72666128,
            1.016517028,
            -163.0115732,
            69.72884885,
            6.996517028
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0237276027042,
                  69.72666128305873,
                  1.01651702849392
                ],
                [
                  -163.02433679872416,
                  69.7282548710052,
                  1.01651702849392
                ],
                [
                  -163.01218162748017,
                  69.72884884926232,
                  6.996517028493921
                ],
                [
                  -163.01157323174687,
                  69.72725521673415,
                  6.996517028493921
                ],
                [
                  -163.0237276027042,
                  69.72666128305873,
                  1.01651702849392
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00070.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00070.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:13:19Z",
            "pc:count": 1213199,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353233.299,
                "count": 1213199,
                "maximum": -352958.8362,
                "minimum": -353440.7962,
                "name": "X",
                "position": 0,
                "stddev": 134.9641761,
                "variance": 18215.32884
              },
              {
                "average": 2218965.422,
                "count": 1213199,
                "maximum": 2219051.893,
                "minimum": 2218875.213,
                "name": "Y",
                "position": 1,
                "stddev": 39.0934225,
                "variance": 1528.295683
              },
              {
                "average": 1.543128928,
                "count": 1213199,
                "maximum": 6.996517028,
                "minimum": 1.016517028,
                "name": "Z",
                "position": 2,
                "stddev": 1.11568935,
                "variance": 1.244762725
              },
              {
                "average": 16565.00735,
                "count": 1213199,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13347.91821,
                "variance": 178166920.6
              },
              {
                "average": 1.000062644,
                "count": 1213199,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007914570461,
                "variance": 6.264042558e-05
              },
              {
                "average": 1.000125289,
                "count": 1213199,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01119254227,
                "variance": 0.0001252730025
              },
              {
                "average": 0.49819774,
                "count": 1213199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999969579,
                "variance": 0.2499969579
              },
              {
                "average": 0.0004080122057,
                "count": 1213199,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02019519913,
                "variance": 0.000407846068
              },
              {
                "average": 6.373535586,
                "count": 1213199,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.690325613,
                "variance": 13.61850313
              },
              {
                "average": -1.101542347,
                "count": 1213199,
                "maximum": 16.29599953,
                "minimum": -20.86199951,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.776136931,
                "variance": 95.57285329
              },
              {
                "average": 0.4915854695,
                "count": 1213199,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999293967,
                "variance": 0.2499294017
              },
              {
                "average": 258.7842868,
                "count": 1213199,
                "maximum": 307,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.23498234,
                "variance": 297.0446161
              },
              {
                "average": 249074113.3,
                "count": 1213199,
                "maximum": 249074799.7,
                "minimum": 249071360.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 668.1369906,
                "variance": 446407.0383
              },
              {
                "average": 0.4915854695,
                "count": 1213199,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999293967,
                "variance": 0.2499294017
              },
              {
                "average": 0,
                "count": 1213199,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1213199,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1213199,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1331924936,
                "count": 1213199,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3397827959,
                "variance": 0.1154523484
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353440.7962,
              2218875.213,
              1.016517028,
              -352958.8362,
              2219051.893,
              6.996517028
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353440.7962039577,
                    2218875.2133259303,
                    1.01651702849392
                  ],
                  [
                    -353440.7962039577,
                    2219051.89332593,
                    1.01651702849392
                  ],
                  [
                    -352958.83620395773,
                    2219051.89332593,
                    6.996517028493921
                  ],
                  [
                    -352958.83620395773,
                    2218875.2133259303,
                    6.996517028493921
                  ],
                  [
                    -353440.7962039577,
                    2218875.2133259303,
                    1.01651702849392
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:13:19+00:00",
            "end_time": "2019-08-05T20:16:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00171.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00094637695517,
              69.74840855110659,
              1.89501547253807
            ],
            [
              -163.00267563086717,
              69.7529394835557,
              1.89501547253807
            ],
            [
              -162.98969629683089,
              69.75357158424845,
              34.73501547253807
            ],
            [
              -162.98796947478044,
              69.74904051674785,
              34.73501547253807
            ],
            [
              -163.00094637695517,
              69.74840855110659,
              1.89501547253807
            ]
          ]
        ]
      },
      "bbox": [
        -163.0026756,
        69.74840855,
        1.895015473,
        -162.9879695,
        69.75357158,
        34.73501547
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:40Z",
        "pc:count": 4273670,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351967.1257,
            "count": 4273670,
            "maximum": -351717.1324,
            "minimum": -352231.2124,
            "name": "X",
            "position": 0,
            "stddev": 132.4608026,
            "variance": 17545.86421
          },
          {
            "average": 2221365.449,
            "count": 4273670,
            "maximum": 2221623.236,
            "minimum": 2221120.976,
            "name": "Y",
            "position": 1,
            "stddev": 130.1909216,
            "variance": 16949.67607
          },
          {
            "average": 3.159619567,
            "count": 4273670,
            "maximum": 34.73501547,
            "minimum": 1.895015473,
            "name": "Z",
            "position": 2,
            "stddev": 1.021941729,
            "variance": 1.044364897
          },
          {
            "average": 43696.27256,
            "count": 4273670,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13945.31714,
            "variance": 194471870.1
          },
          {
            "average": 1.000000702,
            "count": 4273670,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008378379611,
            "variance": 7.01972449e-07
          },
          {
            "average": 1.000001404,
            "count": 4273670,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001184881392,
            "variance": 1.403943912e-06
          },
          {
            "average": 0.4906069023,
            "count": 4273670,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999118204,
            "variance": 0.2499118282
          },
          {
            "average": 0.0004972307174,
            "count": 4273670,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02229312888,
            "variance": 0.0004969835953
          },
          {
            "average": 1.755994965,
            "count": 4273670,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.017203975,
            "variance": 4.069111876
          },
          {
            "average": 3.952501498,
            "count": 4273670,
            "maximum": 21.52799988,
            "minimum": -16.02000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.58514257,
            "variance": 134.2155284
          },
          {
            "average": 0.4780062569,
            "count": 4273670,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995160995,
            "variance": 0.2495163336
          },
          {
            "average": 269.0605576,
            "count": 4273670,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.39137741,
            "variance": 415.8082726
          },
          {
            "average": 249073901.1,
            "count": 4273670,
            "maximum": 249075480.2,
            "minimum": 249071320.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1580.236255,
            "variance": 2497146.62
          },
          {
            "average": 0.4780062569,
            "count": 4273670,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995160995,
            "variance": 0.2495163336
          },
          {
            "average": 0,
            "count": 4273670,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4273670,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4273670,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2604538956,
            "count": 4273670,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4388823407,
            "variance": 0.1926177089
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352231.2124,
          2221120.976,
          1.895015473,
          -351717.1324,
          2221623.236,
          34.73501547
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352231.21243636817,
                2221120.976207412,
                1.89501547253807
              ],
              [
                -352231.21243636817,
                2221623.2362074116,
                1.89501547253807
              ],
              [
                -351717.1324363682,
                2221623.2362074116,
                34.73501547253807
              ],
              [
                -351717.1324363682,
                2221120.976207412,
                34.73501547253807
              ],
              [
                -352231.21243636817,
                2221120.976207412,
                1.89501547253807
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:40+00:00",
        "end_time": "2019-08-05T20:15:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00171.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00171.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00171.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00171.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0026756,
            69.74840855,
            1.895015473,
            -162.9879695,
            69.75357158,
            34.73501547
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00094637695517,
                  69.74840855110659,
                  1.89501547253807
                ],
                [
                  -163.00267563086717,
                  69.7529394835557,
                  1.89501547253807
                ],
                [
                  -162.98969629683089,
                  69.75357158424845,
                  34.73501547253807
                ],
                [
                  -162.98796947478044,
                  69.74904051674785,
                  34.73501547253807
                ],
                [
                  -163.00094637695517,
                  69.74840855110659,
                  1.89501547253807
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00171.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00171.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:40Z",
            "pc:count": 4273670,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351967.1257,
                "count": 4273670,
                "maximum": -351717.1324,
                "minimum": -352231.2124,
                "name": "X",
                "position": 0,
                "stddev": 132.4608026,
                "variance": 17545.86421
              },
              {
                "average": 2221365.449,
                "count": 4273670,
                "maximum": 2221623.236,
                "minimum": 2221120.976,
                "name": "Y",
                "position": 1,
                "stddev": 130.1909216,
                "variance": 16949.67607
              },
              {
                "average": 3.159619567,
                "count": 4273670,
                "maximum": 34.73501547,
                "minimum": 1.895015473,
                "name": "Z",
                "position": 2,
                "stddev": 1.021941729,
                "variance": 1.044364897
              },
              {
                "average": 43696.27256,
                "count": 4273670,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13945.31714,
                "variance": 194471870.1
              },
              {
                "average": 1.000000702,
                "count": 4273670,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008378379611,
                "variance": 7.01972449e-07
              },
              {
                "average": 1.000001404,
                "count": 4273670,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001184881392,
                "variance": 1.403943912e-06
              },
              {
                "average": 0.4906069023,
                "count": 4273670,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999118204,
                "variance": 0.2499118282
              },
              {
                "average": 0.0004972307174,
                "count": 4273670,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02229312888,
                "variance": 0.0004969835953
              },
              {
                "average": 1.755994965,
                "count": 4273670,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.017203975,
                "variance": 4.069111876
              },
              {
                "average": 3.952501498,
                "count": 4273670,
                "maximum": 21.52799988,
                "minimum": -16.02000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.58514257,
                "variance": 134.2155284
              },
              {
                "average": 0.4780062569,
                "count": 4273670,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995160995,
                "variance": 0.2495163336
              },
              {
                "average": 269.0605576,
                "count": 4273670,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.39137741,
                "variance": 415.8082726
              },
              {
                "average": 249073901.1,
                "count": 4273670,
                "maximum": 249075480.2,
                "minimum": 249071320.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1580.236255,
                "variance": 2497146.62
              },
              {
                "average": 0.4780062569,
                "count": 4273670,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995160995,
                "variance": 0.2495163336
              },
              {
                "average": 0,
                "count": 4273670,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4273670,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4273670,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2604538956,
                "count": 4273670,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4388823407,
                "variance": 0.1926177089
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352231.2124,
              2221120.976,
              1.895015473,
              -351717.1324,
              2221623.236,
              34.73501547
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352231.21243636817,
                    2221120.976207412,
                    1.89501547253807
                  ],
                  [
                    -352231.21243636817,
                    2221623.2362074116,
                    1.89501547253807
                  ],
                  [
                    -351717.1324363682,
                    2221623.2362074116,
                    34.73501547253807
                  ],
                  [
                    -351717.1324363682,
                    2221120.976207412,
                    34.73501547253807
                  ],
                  [
                    -352231.21243636817,
                    2221120.976207412,
                    1.89501547253807
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:40+00:00",
            "end_time": "2019-08-05T20:15:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00201.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00133462905248,
              69.75660485893059,
              1.205897808126309
            ],
            [
              -163.00306462351742,
              69.76113615480195,
              1.205897808126309
            ],
            [
              -162.99007626870394,
              69.76176852973526,
              39.30589780812631
            ],
            [
              -162.98834870872253,
              69.75723709868315,
              39.30589780812631
            ],
            [
              -163.00133462905248,
              69.75660485893059,
              1.205897808126309
            ]
          ]
        ]
      },
      "bbox": [
        -163.0030646,
        69.75660486,
        1.205897808,
        -162.9883487,
        69.76176853,
        39.30589781
      ],
      "properties": {
        "datetime": "2019-08-05T21:18:09Z",
        "pc:count": 4524176,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351860.1336,
            "count": 4524176,
            "maximum": -351610.409,
            "minimum": -352124.669,
            "name": "X",
            "position": 0,
            "stddev": 133.5872687,
            "variance": 17845.55836
          },
          {
            "average": 2222270.244,
            "count": 4524176,
            "maximum": 2222517.289,
            "minimum": 2222015.009,
            "name": "Y",
            "position": 1,
            "stddev": 127.3980567,
            "variance": 16230.26485
          },
          {
            "average": 1.931288688,
            "count": 4524176,
            "maximum": 39.30589781,
            "minimum": 1.205897808,
            "name": "Z",
            "position": 2,
            "stddev": 1.107129276,
            "variance": 1.225735233
          },
          {
            "average": 22623.5331,
            "count": 4524176,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 16316.7502,
            "variance": 266236337
          },
          {
            "average": 1.000002652,
            "count": 4524176,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001628622196,
            "variance": 2.652410256e-06
          },
          {
            "average": 1.000005305,
            "count": 4524176,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002303216543,
            "variance": 5.304806442e-06
          },
          {
            "average": 0.3664990045,
            "count": 4524176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4818480419,
            "variance": 0.2321775355
          },
          {
            "average": 0.0003543186649,
            "count": 4524176,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01882002129,
            "variance": 0.0003541932015
          },
          {
            "average": 4.422402886,
            "count": 4524176,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.868763949,
            "variance": 14.96733449
          },
          {
            "average": 4.598111205,
            "count": 4524176,
            "maximum": 21.7140007,
            "minimum": -16.02000046,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.2871627,
            "variance": 127.4000417
          },
          {
            "average": 0.4870807413,
            "count": 4524176,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998331201,
            "variance": 0.249833148
          },
          {
            "average": 269.4665707,
            "count": 4524176,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.64113429,
            "variance": 426.0564249
          },
          {
            "average": 249073837.9,
            "count": 4524176,
            "maximum": 249075089.3,
            "minimum": 249071306.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1590.667877,
            "variance": 2530224.294
          },
          {
            "average": 0.4870807413,
            "count": 4524176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998331201,
            "variance": 0.249833148
          },
          {
            "average": 0,
            "count": 4524176,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4524176,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4524176,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2463266239,
            "count": 4524176,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4308710472,
            "variance": 0.1856498593
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352124.669,
          2222015.009,
          1.205897808,
          -351610.409,
          2222517.289,
          39.30589781
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352124.6690139716,
                2222015.0087866248,
                1.205897808126309
              ],
              [
                -352124.6690139716,
                2222517.288786625,
                1.205897808126309
              ],
              [
                -351610.40901397157,
                2222517.288786625,
                39.30589780812631
              ],
              [
                -351610.40901397157,
                2222015.0087866248,
                39.30589780812631
              ],
              [
                -352124.6690139716,
                2222015.0087866248,
                1.205897808126309
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:18:09+00:00",
        "end_time": "2019-08-05T20:15:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00201.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00201.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00201.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00201.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0030646,
            69.75660486,
            1.205897808,
            -162.9883487,
            69.76176853,
            39.30589781
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00133462905248,
                  69.75660485893059,
                  1.205897808126309
                ],
                [
                  -163.00306462351742,
                  69.76113615480195,
                  1.205897808126309
                ],
                [
                  -162.99007626870394,
                  69.76176852973526,
                  39.30589780812631
                ],
                [
                  -162.98834870872253,
                  69.75723709868315,
                  39.30589780812631
                ],
                [
                  -163.00133462905248,
                  69.75660485893059,
                  1.205897808126309
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00201.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00201.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:18:09Z",
            "pc:count": 4524176,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351860.1336,
                "count": 4524176,
                "maximum": -351610.409,
                "minimum": -352124.669,
                "name": "X",
                "position": 0,
                "stddev": 133.5872687,
                "variance": 17845.55836
              },
              {
                "average": 2222270.244,
                "count": 4524176,
                "maximum": 2222517.289,
                "minimum": 2222015.009,
                "name": "Y",
                "position": 1,
                "stddev": 127.3980567,
                "variance": 16230.26485
              },
              {
                "average": 1.931288688,
                "count": 4524176,
                "maximum": 39.30589781,
                "minimum": 1.205897808,
                "name": "Z",
                "position": 2,
                "stddev": 1.107129276,
                "variance": 1.225735233
              },
              {
                "average": 22623.5331,
                "count": 4524176,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 16316.7502,
                "variance": 266236337
              },
              {
                "average": 1.000002652,
                "count": 4524176,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001628622196,
                "variance": 2.652410256e-06
              },
              {
                "average": 1.000005305,
                "count": 4524176,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002303216543,
                "variance": 5.304806442e-06
              },
              {
                "average": 0.3664990045,
                "count": 4524176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4818480419,
                "variance": 0.2321775355
              },
              {
                "average": 0.0003543186649,
                "count": 4524176,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01882002129,
                "variance": 0.0003541932015
              },
              {
                "average": 4.422402886,
                "count": 4524176,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.868763949,
                "variance": 14.96733449
              },
              {
                "average": 4.598111205,
                "count": 4524176,
                "maximum": 21.7140007,
                "minimum": -16.02000046,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.2871627,
                "variance": 127.4000417
              },
              {
                "average": 0.4870807413,
                "count": 4524176,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998331201,
                "variance": 0.249833148
              },
              {
                "average": 269.4665707,
                "count": 4524176,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.64113429,
                "variance": 426.0564249
              },
              {
                "average": 249073837.9,
                "count": 4524176,
                "maximum": 249075089.3,
                "minimum": 249071306.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1590.667877,
                "variance": 2530224.294
              },
              {
                "average": 0.4870807413,
                "count": 4524176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998331201,
                "variance": 0.249833148
              },
              {
                "average": 0,
                "count": 4524176,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4524176,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4524176,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2463266239,
                "count": 4524176,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4308710472,
                "variance": 0.1856498593
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352124.669,
              2222015.009,
              1.205897808,
              -351610.409,
              2222517.289,
              39.30589781
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352124.6690139716,
                    2222015.0087866248,
                    1.205897808126309
                  ],
                  [
                    -352124.6690139716,
                    2222517.288786625,
                    1.205897808126309
                  ],
                  [
                    -351610.40901397157,
                    2222517.288786625,
                    39.30589780812631
                  ],
                  [
                    -351610.40901397157,
                    2222015.0087866248,
                    39.30589780812631
                  ],
                  [
                    -352124.6690139716,
                    2222015.0087866248,
                    1.205897808126309
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:18:09+00:00",
            "end_time": "2019-08-05T20:15:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00172.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98911704667842,
              69.74847469195626,
              1.20280846509145
            ],
            [
              -162.99084377154776,
              69.75300501420783,
              1.20280846509145
            ],
            [
              -162.97786358193906,
              69.7536363133737,
              16.62280846509145
            ],
            [
              -162.9761392888924,
              69.74910585625965,
              16.62280846509145
            ],
            [
              -162.98911704667842,
              69.74847469195626,
              1.20280846509145
            ]
          ]
        ]
      },
      "bbox": [
        -162.9908438,
        69.74847469,
        1.202808465,
        -162.9761393,
        69.75363631,
        16.62280847
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:34Z",
        "pc:count": 3741745,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351524.4189,
            "count": 3741745,
            "maximum": -351256.051,
            "minimum": -351770.151,
            "name": "X",
            "position": 0,
            "stddev": 129.072727,
            "variance": 16659.76887
          },
          {
            "average": 2221317.931,
            "count": 3741745,
            "maximum": 2221567.655,
            "minimum": 2221065.475,
            "name": "Y",
            "position": 1,
            "stddev": 130.572525,
            "variance": 17049.18429
          },
          {
            "average": 3.845212317,
            "count": 3741745,
            "maximum": 16.62280847,
            "minimum": 1.202808465,
            "name": "Z",
            "position": 2,
            "stddev": 0.6342725561,
            "variance": 0.4023016754
          },
          {
            "average": 44958.17112,
            "count": 3741745,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13344.84113,
            "variance": 178084784.9
          },
          {
            "average": 1.000000267,
            "count": 3741745,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0005169671014,
            "variance": 2.67254984e-07
          },
          {
            "average": 1.000000535,
            "count": 3741745,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0007311017885,
            "variance": 5.345098251e-07
          },
          {
            "average": 0.4971167196,
            "count": 3741745,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999917534,
            "variance": 0.2499917535
          },
          {
            "average": 0.0003987444361,
            "count": 3741745,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01996460732,
            "variance": 0.0003985855455
          },
          {
            "average": 1.291654562,
            "count": 3741745,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6946606293,
            "variance": 0.4825533899
          },
          {
            "average": 1.713120752,
            "count": 3741745,
            "maximum": 21.36599922,
            "minimum": -16.13999939,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.813381435,
            "variance": 96.30245519
          },
          {
            "average": 0.5046305935,
            "count": 3741745,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499978624,
            "variance": 0.2499786244
          },
          {
            "average": 267.1517744,
            "count": 3741745,
            "maximum": 301,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.44684886,
            "variance": 340.2862329
          },
          {
            "average": 249074307.2,
            "count": 3741745,
            "maximum": 249075474.4,
            "minimum": 249071321.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1514.258356,
            "variance": 2292978.368
          },
          {
            "average": 0.5046305935,
            "count": 3741745,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499978624,
            "variance": 0.2499786244
          },
          {
            "average": 0,
            "count": 3741745,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3741745,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3741745,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2044695724,
            "count": 3741745,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4033135378,
            "variance": 0.1626618098
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351770.151,
          2221065.475,
          1.202808465,
          -351256.051,
          2221567.655,
          16.62280847
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351770.1510305034,
                2221065.474921283,
                1.20280846509145
              ],
              [
                -351770.1510305034,
                2221567.6549212825,
                1.20280846509145
              ],
              [
                -351256.0510305034,
                2221567.6549212825,
                16.62280846509145
              ],
              [
                -351256.0510305034,
                2221065.474921283,
                16.62280846509145
              ],
              [
                -351770.1510305034,
                2221065.474921283,
                1.20280846509145
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:34+00:00",
        "end_time": "2019-08-05T20:15:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00172.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00172.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00172.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00172.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9908438,
            69.74847469,
            1.202808465,
            -162.9761393,
            69.75363631,
            16.62280847
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98911704667842,
                  69.74847469195626,
                  1.20280846509145
                ],
                [
                  -162.99084377154776,
                  69.75300501420783,
                  1.20280846509145
                ],
                [
                  -162.97786358193906,
                  69.7536363133737,
                  16.62280846509145
                ],
                [
                  -162.9761392888924,
                  69.74910585625965,
                  16.62280846509145
                ],
                [
                  -162.98911704667842,
                  69.74847469195626,
                  1.20280846509145
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00172.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00172.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:34Z",
            "pc:count": 3741745,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351524.4189,
                "count": 3741745,
                "maximum": -351256.051,
                "minimum": -351770.151,
                "name": "X",
                "position": 0,
                "stddev": 129.072727,
                "variance": 16659.76887
              },
              {
                "average": 2221317.931,
                "count": 3741745,
                "maximum": 2221567.655,
                "minimum": 2221065.475,
                "name": "Y",
                "position": 1,
                "stddev": 130.572525,
                "variance": 17049.18429
              },
              {
                "average": 3.845212317,
                "count": 3741745,
                "maximum": 16.62280847,
                "minimum": 1.202808465,
                "name": "Z",
                "position": 2,
                "stddev": 0.6342725561,
                "variance": 0.4023016754
              },
              {
                "average": 44958.17112,
                "count": 3741745,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13344.84113,
                "variance": 178084784.9
              },
              {
                "average": 1.000000267,
                "count": 3741745,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0005169671014,
                "variance": 2.67254984e-07
              },
              {
                "average": 1.000000535,
                "count": 3741745,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0007311017885,
                "variance": 5.345098251e-07
              },
              {
                "average": 0.4971167196,
                "count": 3741745,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999917534,
                "variance": 0.2499917535
              },
              {
                "average": 0.0003987444361,
                "count": 3741745,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01996460732,
                "variance": 0.0003985855455
              },
              {
                "average": 1.291654562,
                "count": 3741745,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6946606293,
                "variance": 0.4825533899
              },
              {
                "average": 1.713120752,
                "count": 3741745,
                "maximum": 21.36599922,
                "minimum": -16.13999939,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.813381435,
                "variance": 96.30245519
              },
              {
                "average": 0.5046305935,
                "count": 3741745,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499978624,
                "variance": 0.2499786244
              },
              {
                "average": 267.1517744,
                "count": 3741745,
                "maximum": 301,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.44684886,
                "variance": 340.2862329
              },
              {
                "average": 249074307.2,
                "count": 3741745,
                "maximum": 249075474.4,
                "minimum": 249071321.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1514.258356,
                "variance": 2292978.368
              },
              {
                "average": 0.5046305935,
                "count": 3741745,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499978624,
                "variance": 0.2499786244
              },
              {
                "average": 0,
                "count": 3741745,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3741745,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3741745,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2044695724,
                "count": 3741745,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4033135378,
                "variance": 0.1626618098
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351770.151,
              2221065.475,
              1.202808465,
              -351256.051,
              2221567.655,
              16.62280847
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351770.1510305034,
                    2221065.474921283,
                    1.20280846509145
                  ],
                  [
                    -351770.1510305034,
                    2221567.6549212825,
                    1.20280846509145
                  ],
                  [
                    -351256.0510305034,
                    2221567.6549212825,
                    16.62280846509145
                  ],
                  [
                    -351256.0510305034,
                    2221065.474921283,
                    16.62280846509145
                  ],
                  [
                    -351770.1510305034,
                    2221065.474921283,
                    1.20280846509145
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:34+00:00",
            "end_time": "2019-08-05T20:15:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00170.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01277550908327,
              69.74834119151251,
              1.12588209707425
            ],
            [
              -163.01450715463815,
              69.75287237311595,
              1.12588209707425
            ],
            [
              -163.00152665759765,
              69.7535053736465,
              22.32588209707425
            ],
            [
              -162.99979744412732,
              69.74897405679239,
              22.32588209707425
            ],
            [
              -163.01277550908327,
              69.74834119151251,
              1.12588209707425
            ]
          ]
        ]
      },
      "bbox": [
        -163.0145072,
        69.74834119,
        1.125882097,
        -162.9997974,
        69.75350537,
        22.3258821
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:50Z",
        "pc:count": 4291752,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352449.5977,
            "count": 4291752,
            "maximum": -352178.1356,
            "minimum": -352692.2756,
            "name": "X",
            "position": 0,
            "stddev": 136.4531131,
            "variance": 18619.45207
          },
          {
            "average": 2221425.17,
            "count": 4291752,
            "maximum": 2221678.726,
            "minimum": 2221176.426,
            "name": "Y",
            "position": 1,
            "stddev": 133.9269406,
            "variance": 17936.42542
          },
          {
            "average": 7.865516463,
            "count": 4291752,
            "maximum": 22.3258821,
            "minimum": 1.125882097,
            "name": "Z",
            "position": 2,
            "stddev": 3.92036519,
            "variance": 15.36926323
          },
          {
            "average": 48319.54681,
            "count": 4291752,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 15369.83088,
            "variance": 236231701.2
          },
          {
            "average": 1.000003495,
            "count": 4291752,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001869509223,
            "variance": 3.495064736e-06
          },
          {
            "average": 1.00000699,
            "count": 4291752,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002643880678,
            "variance": 6.99010504e-06
          },
          {
            "average": 0.5073268446,
            "count": 4291752,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999463727,
            "variance": 0.2499463756
          },
          {
            "average": 0.0004082248928,
            "count": 4291752,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02020045396,
            "variance": 0.0004080583403
          },
          {
            "average": 1.804721242,
            "count": 4291752,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.116598447,
            "variance": 4.479988987
          },
          {
            "average": 1.227674727,
            "count": 4291752,
            "maximum": 16.80599976,
            "minimum": -15.94200039,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.68918717,
            "variance": 114.2587225
          },
          {
            "average": 0.5133621421,
            "count": 4291752,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998214795,
            "variance": 0.2498215114
          },
          {
            "average": 261.2038706,
            "count": 4291752,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.48243656,
            "variance": 271.670715
          },
          {
            "average": 249074140,
            "count": 4291752,
            "maximum": 249075490.6,
            "minimum": 249071320.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1226.513099,
            "variance": 1504334.381
          },
          {
            "average": 0.5133621421,
            "count": 4291752,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998214795,
            "variance": 0.2498215114
          },
          {
            "average": 0,
            "count": 4291752,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4291752,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4291752,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2738483025,
            "count": 4291752,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4459321205,
            "variance": 0.1988554561
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352692.2756,
          2221176.426,
          1.125882097,
          -352178.1356,
          2221678.726,
          22.3258821
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352692.27563586546,
                2221176.4261074895,
                1.12588209707425
              ],
              [
                -352692.27563586546,
                2221678.7261074893,
                1.12588209707425
              ],
              [
                -352178.13563586544,
                2221678.7261074893,
                22.32588209707425
              ],
              [
                -352178.13563586544,
                2221176.4261074895,
                22.32588209707425
              ],
              [
                -352692.27563586546,
                2221176.4261074895,
                1.12588209707425
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:50+00:00",
        "end_time": "2019-08-05T20:15:20+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00170.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00170.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00170.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00170.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0145072,
            69.74834119,
            1.125882097,
            -162.9997974,
            69.75350537,
            22.3258821
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01277550908327,
                  69.74834119151251,
                  1.12588209707425
                ],
                [
                  -163.01450715463815,
                  69.75287237311595,
                  1.12588209707425
                ],
                [
                  -163.00152665759765,
                  69.7535053736465,
                  22.32588209707425
                ],
                [
                  -162.99979744412732,
                  69.74897405679239,
                  22.32588209707425
                ],
                [
                  -163.01277550908327,
                  69.74834119151251,
                  1.12588209707425
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00170.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00170.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:50Z",
            "pc:count": 4291752,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352449.5977,
                "count": 4291752,
                "maximum": -352178.1356,
                "minimum": -352692.2756,
                "name": "X",
                "position": 0,
                "stddev": 136.4531131,
                "variance": 18619.45207
              },
              {
                "average": 2221425.17,
                "count": 4291752,
                "maximum": 2221678.726,
                "minimum": 2221176.426,
                "name": "Y",
                "position": 1,
                "stddev": 133.9269406,
                "variance": 17936.42542
              },
              {
                "average": 7.865516463,
                "count": 4291752,
                "maximum": 22.3258821,
                "minimum": 1.125882097,
                "name": "Z",
                "position": 2,
                "stddev": 3.92036519,
                "variance": 15.36926323
              },
              {
                "average": 48319.54681,
                "count": 4291752,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 15369.83088,
                "variance": 236231701.2
              },
              {
                "average": 1.000003495,
                "count": 4291752,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001869509223,
                "variance": 3.495064736e-06
              },
              {
                "average": 1.00000699,
                "count": 4291752,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002643880678,
                "variance": 6.99010504e-06
              },
              {
                "average": 0.5073268446,
                "count": 4291752,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999463727,
                "variance": 0.2499463756
              },
              {
                "average": 0.0004082248928,
                "count": 4291752,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02020045396,
                "variance": 0.0004080583403
              },
              {
                "average": 1.804721242,
                "count": 4291752,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.116598447,
                "variance": 4.479988987
              },
              {
                "average": 1.227674727,
                "count": 4291752,
                "maximum": 16.80599976,
                "minimum": -15.94200039,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.68918717,
                "variance": 114.2587225
              },
              {
                "average": 0.5133621421,
                "count": 4291752,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998214795,
                "variance": 0.2498215114
              },
              {
                "average": 261.2038706,
                "count": 4291752,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.48243656,
                "variance": 271.670715
              },
              {
                "average": 249074140,
                "count": 4291752,
                "maximum": 249075490.6,
                "minimum": 249071320.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1226.513099,
                "variance": 1504334.381
              },
              {
                "average": 0.5133621421,
                "count": 4291752,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998214795,
                "variance": 0.2498215114
              },
              {
                "average": 0,
                "count": 4291752,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4291752,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4291752,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2738483025,
                "count": 4291752,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4459321205,
                "variance": 0.1988554561
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352692.2756,
              2221176.426,
              1.125882097,
              -352178.1356,
              2221678.726,
              22.3258821
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352692.27563586546,
                    2221176.4261074895,
                    1.12588209707425
                  ],
                  [
                    -352692.27563586546,
                    2221678.7261074893,
                    1.12588209707425
                  ],
                  [
                    -352178.13563586544,
                    2221678.7261074893,
                    22.32588209707425
                  ],
                  [
                    -352178.13563586544,
                    2221176.4261074895,
                    22.32588209707425
                  ],
                  [
                    -352692.27563586546,
                    2221176.4261074895,
                    1.12588209707425
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:50+00:00",
            "end_time": "2019-08-05T20:15:20+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00185.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01475687506766,
              69.75286149921328,
              1.14653453494861
            ],
            [
              -163.0162298338472,
              69.75671437783772,
              1.14653453494861
            ],
            [
              -163.0133538038221,
              69.75685471695893,
              1.38653453494861
            ],
            [
              -163.01188130329658,
              69.753001812832,
              1.38653453494861
            ],
            [
              -163.01475687506766,
              69.75286149921328,
              1.14653453494861
            ]
          ]
        ]
      },
      "bbox": [
        -163.0162298,
        69.7528615,
        1.146534535,
        -163.0118813,
        69.75685472,
        1.386534535
      ],
      "properties": {
        "datetime": "2019-08-05T21:12:30Z",
        "pc:count": 369650,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352645.1204,
            "count": 369650,
            "maximum": -352588.2475,
            "minimum": -352702.1475,
            "name": "X",
            "position": 0,
            "stddev": 23.79551695,
            "variance": 566.2266267
          },
          {
            "average": 2221826.083,
            "count": 369650,
            "maximum": 2222105.969,
            "minimum": 2221678.869,
            "name": "Y",
            "position": 1,
            "stddev": 101.6979504,
            "variance": 10342.47311
          },
          {
            "average": 1.263924498,
            "count": 369650,
            "maximum": 1.386534535,
            "minimum": 1.146534535,
            "name": "Z",
            "position": 2,
            "stddev": 0.02936448925,
            "variance": 0.0008622732288
          },
          {
            "average": 12364.85007,
            "count": 369650,
            "maximum": 65535,
            "minimum": 1584,
            "name": "Intensity",
            "position": 3,
            "stddev": 8424.209249,
            "variance": 70967301.47
          },
          {
            "average": 1,
            "count": 369650,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 369650,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4944677398,
            "count": 369650,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999700694,
            "variance": 0.2499700703
          },
          {
            "average": 0,
            "count": 369650,
            "maximum": 0,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 8.7202056,
            "count": 369650,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.366892106,
            "variance": 1.868394029
          },
          {
            "average": 0.3250693992,
            "count": 369650,
            "maximum": 12.88199997,
            "minimum": -15.39000034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72870109,
            "variance": 115.1050271
          },
          {
            "average": 0.5131610983,
            "count": 369650,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998274316,
            "variance": 0.2498274613
          },
          {
            "average": 259.3656648,
            "count": 369650,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 15.6779833,
            "variance": 245.7991603
          },
          {
            "average": 249074065.7,
            "count": 369650,
            "maximum": 249074750.9,
            "minimum": 249071313.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1082.312704,
            "variance": 1171400.79
          },
          {
            "average": 0.5131610983,
            "count": 369650,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998274316,
            "variance": 0.2498274613
          },
          {
            "average": 0,
            "count": 369650,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 369650,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 369650,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01158393075,
            "count": 369650,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.107003618,
            "variance": 0.01144977427
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352702.1475,
          2221678.869,
          1.146534535,
          -352588.2475,
          2222105.969,
          1.386534535
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352702.14747861045,
                2221678.868996536,
                1.14653453494861
              ],
              [
                -352702.14747861045,
                2222105.9689965355,
                1.14653453494861
              ],
              [
                -352588.2474786104,
                2222105.9689965355,
                1.38653453494861
              ],
              [
                -352588.2474786104,
                2221678.868996536,
                1.38653453494861
              ],
              [
                -352702.14747861045,
                2221678.868996536,
                1.14653453494861
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:12:30+00:00",
        "end_time": "2019-08-05T20:15:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00185.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00185.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00185.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00185.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0162298,
            69.7528615,
            1.146534535,
            -163.0118813,
            69.75685472,
            1.386534535
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01475687506766,
                  69.75286149921328,
                  1.14653453494861
                ],
                [
                  -163.0162298338472,
                  69.75671437783772,
                  1.14653453494861
                ],
                [
                  -163.0133538038221,
                  69.75685471695893,
                  1.38653453494861
                ],
                [
                  -163.01188130329658,
                  69.753001812832,
                  1.38653453494861
                ],
                [
                  -163.01475687506766,
                  69.75286149921328,
                  1.14653453494861
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00185.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00185.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:12:30Z",
            "pc:count": 369650,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352645.1204,
                "count": 369650,
                "maximum": -352588.2475,
                "minimum": -352702.1475,
                "name": "X",
                "position": 0,
                "stddev": 23.79551695,
                "variance": 566.2266267
              },
              {
                "average": 2221826.083,
                "count": 369650,
                "maximum": 2222105.969,
                "minimum": 2221678.869,
                "name": "Y",
                "position": 1,
                "stddev": 101.6979504,
                "variance": 10342.47311
              },
              {
                "average": 1.263924498,
                "count": 369650,
                "maximum": 1.386534535,
                "minimum": 1.146534535,
                "name": "Z",
                "position": 2,
                "stddev": 0.02936448925,
                "variance": 0.0008622732288
              },
              {
                "average": 12364.85007,
                "count": 369650,
                "maximum": 65535,
                "minimum": 1584,
                "name": "Intensity",
                "position": 3,
                "stddev": 8424.209249,
                "variance": 70967301.47
              },
              {
                "average": 1,
                "count": 369650,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 369650,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4944677398,
                "count": 369650,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999700694,
                "variance": 0.2499700703
              },
              {
                "average": 0,
                "count": 369650,
                "maximum": 0,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 8.7202056,
                "count": 369650,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.366892106,
                "variance": 1.868394029
              },
              {
                "average": 0.3250693992,
                "count": 369650,
                "maximum": 12.88199997,
                "minimum": -15.39000034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72870109,
                "variance": 115.1050271
              },
              {
                "average": 0.5131610983,
                "count": 369650,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998274316,
                "variance": 0.2498274613
              },
              {
                "average": 259.3656648,
                "count": 369650,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 15.6779833,
                "variance": 245.7991603
              },
              {
                "average": 249074065.7,
                "count": 369650,
                "maximum": 249074750.9,
                "minimum": 249071313.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1082.312704,
                "variance": 1171400.79
              },
              {
                "average": 0.5131610983,
                "count": 369650,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998274316,
                "variance": 0.2498274613
              },
              {
                "average": 0,
                "count": 369650,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 369650,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 369650,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01158393075,
                "count": 369650,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.107003618,
                "variance": 0.01144977427
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352702.1475,
              2221678.869,
              1.146534535,
              -352588.2475,
              2222105.969,
              1.386534535
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352702.14747861045,
                    2221678.868996536,
                    1.14653453494861
                  ],
                  [
                    -352702.14747861045,
                    2222105.9689965355,
                    1.14653453494861
                  ],
                  [
                    -352588.2474786104,
                    2222105.9689965355,
                    1.38653453494861
                  ],
                  [
                    -352588.2474786104,
                    2221678.868996536,
                    1.38653453494861
                  ],
                  [
                    -352702.14747861045,
                    2221678.868996536,
                    1.14653453494861
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:12:30+00:00",
            "end_time": "2019-08-05T20:15:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00105.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98835061018394,
              69.73208220524917,
              2.897964900719087
            ],
            [
              -162.9900769589608,
              69.7366146881707,
              2.897964900719087
            ],
            [
              -162.97710469966916,
              69.7372459312852,
              9.857964900719088
            ],
            [
              -162.97538078091753,
              69.7327133135683,
              9.857964900719088
            ],
            [
              -162.98835061018394,
              69.73208220524917,
              2.897964900719087
            ]
          ]
        ]
      },
      "bbox": [
        -162.990077,
        69.73208221,
        2.897964901,
        -162.9753808,
        69.73724593,
        9.857964901
      ],
      "properties": {
        "datetime": "2019-08-05T21:21:28Z",
        "pc:count": 3848754,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351741.0371,
            "count": 3848754,
            "maximum": -351469.153,
            "minimum": -351983.293,
            "name": "X",
            "position": 0,
            "stddev": 128.6572905,
            "variance": 16552.69839
          },
          {
            "average": 2219523.794,
            "count": 3848754,
            "maximum": 2219779.786,
            "minimum": 2219277.326,
            "name": "Y",
            "position": 1,
            "stddev": 133.1642034,
            "variance": 17732.70508
          },
          {
            "average": 3.412022954,
            "count": 3848754,
            "maximum": 9.857964901,
            "minimum": 2.897964901,
            "name": "Z",
            "position": 2,
            "stddev": 0.3511757375,
            "variance": 0.1233243986
          },
          {
            "average": 33956.37573,
            "count": 3848754,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13018.85665,
            "variance": 169490628.5
          },
          {
            "average": 1.000001299,
            "count": 3848754,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001139789626,
            "variance": 1.299120392e-06
          },
          {
            "average": 1.000002598,
            "count": 3848754,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0016119049,
            "variance": 2.598237408e-06
          },
          {
            "average": 0.4957560291,
            "count": 3848754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999820533,
            "variance": 0.2499820537
          },
          {
            "average": 0.000346086032,
            "count": 3848754,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0186001706,
            "variance": 0.0003459663463
          },
          {
            "average": 1.51665552,
            "count": 3848754,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.539858627,
            "variance": 2.371164591
          },
          {
            "average": 2.535098862,
            "count": 3848754,
            "maximum": 21.57600021,
            "minimum": -15.89400005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.947110648,
            "variance": 98.94501025
          },
          {
            "average": 0.5088659862,
            "count": 3848754,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999214531,
            "variance": 0.2499214592
          },
          {
            "average": 268.3484169,
            "count": 3848754,
            "maximum": 301,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.1317194,
            "variance": 366.0226874
          },
          {
            "average": 249074200,
            "count": 3848754,
            "maximum": 249075288.1,
            "minimum": 249071347.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1580.922518,
            "variance": 2499316.007
          },
          {
            "average": 0.5088659862,
            "count": 3848754,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999214531,
            "variance": 0.2499214592
          },
          {
            "average": 0,
            "count": 3848754,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3848754,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3848754,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2061654239,
            "count": 3848754,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4045507192,
            "variance": 0.1636612844
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351983.293,
          2219277.326,
          2.897964901,
          -351469.153,
          2219779.786,
          9.857964901
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351983.2929661151,
                2219277.3258204726,
                2.897964900719087
              ],
              [
                -351983.2929661151,
                2219779.7858204725,
                2.897964900719087
              ],
              [
                -351469.1529661151,
                2219779.7858204725,
                9.857964900719088
              ],
              [
                -351469.1529661151,
                2219277.3258204726,
                9.857964900719088
              ],
              [
                -351983.2929661151,
                2219277.3258204726,
                2.897964900719087
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:21:28+00:00",
        "end_time": "2019-08-05T20:15:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00105.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00105.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00105.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00105.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.990077,
            69.73208221,
            2.897964901,
            -162.9753808,
            69.73724593,
            9.857964901
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98835061018394,
                  69.73208220524917,
                  2.897964900719087
                ],
                [
                  -162.9900769589608,
                  69.7366146881707,
                  2.897964900719087
                ],
                [
                  -162.97710469966916,
                  69.7372459312852,
                  9.857964900719088
                ],
                [
                  -162.97538078091753,
                  69.7327133135683,
                  9.857964900719088
                ],
                [
                  -162.98835061018394,
                  69.73208220524917,
                  2.897964900719087
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00105.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00105.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:21:28Z",
            "pc:count": 3848754,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351741.0371,
                "count": 3848754,
                "maximum": -351469.153,
                "minimum": -351983.293,
                "name": "X",
                "position": 0,
                "stddev": 128.6572905,
                "variance": 16552.69839
              },
              {
                "average": 2219523.794,
                "count": 3848754,
                "maximum": 2219779.786,
                "minimum": 2219277.326,
                "name": "Y",
                "position": 1,
                "stddev": 133.1642034,
                "variance": 17732.70508
              },
              {
                "average": 3.412022954,
                "count": 3848754,
                "maximum": 9.857964901,
                "minimum": 2.897964901,
                "name": "Z",
                "position": 2,
                "stddev": 0.3511757375,
                "variance": 0.1233243986
              },
              {
                "average": 33956.37573,
                "count": 3848754,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13018.85665,
                "variance": 169490628.5
              },
              {
                "average": 1.000001299,
                "count": 3848754,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001139789626,
                "variance": 1.299120392e-06
              },
              {
                "average": 1.000002598,
                "count": 3848754,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0016119049,
                "variance": 2.598237408e-06
              },
              {
                "average": 0.4957560291,
                "count": 3848754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999820533,
                "variance": 0.2499820537
              },
              {
                "average": 0.000346086032,
                "count": 3848754,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0186001706,
                "variance": 0.0003459663463
              },
              {
                "average": 1.51665552,
                "count": 3848754,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.539858627,
                "variance": 2.371164591
              },
              {
                "average": 2.535098862,
                "count": 3848754,
                "maximum": 21.57600021,
                "minimum": -15.89400005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.947110648,
                "variance": 98.94501025
              },
              {
                "average": 0.5088659862,
                "count": 3848754,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999214531,
                "variance": 0.2499214592
              },
              {
                "average": 268.3484169,
                "count": 3848754,
                "maximum": 301,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.1317194,
                "variance": 366.0226874
              },
              {
                "average": 249074200,
                "count": 3848754,
                "maximum": 249075288.1,
                "minimum": 249071347.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1580.922518,
                "variance": 2499316.007
              },
              {
                "average": 0.5088659862,
                "count": 3848754,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999214531,
                "variance": 0.2499214592
              },
              {
                "average": 0,
                "count": 3848754,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3848754,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3848754,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2061654239,
                "count": 3848754,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4045507192,
                "variance": 0.1636612844
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351983.293,
              2219277.326,
              2.897964901,
              -351469.153,
              2219779.786,
              9.857964901
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351983.2929661151,
                    2219277.3258204726,
                    2.897964900719087
                  ],
                  [
                    -351983.2929661151,
                    2219779.7858204725,
                    2.897964900719087
                  ],
                  [
                    -351469.1529661151,
                    2219779.7858204725,
                    9.857964900719088
                  ],
                  [
                    -351469.1529661151,
                    2219277.3258204726,
                    9.857964900719088
                  ],
                  [
                    -351983.2929661151,
                    2219277.3258204726,
                    2.897964900719087
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:21:28+00:00",
            "end_time": "2019-08-05T20:15:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00103.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01199246416118,
              69.73194807229201,
              -11.053069571751745
            ],
            [
              -163.01372283369267,
              69.73647906928201,
              -11.053069571751745
            ],
            [
              -163.0007502682982,
              69.73711201251753,
              19.646930428248254
            ],
            [
              -162.99902232779613,
              69.7325808804144,
              19.646930428248254
            ],
            [
              -163.01199246416118,
              69.73194807229201,
              -11.053069571751745
            ]
          ]
        ]
      },
      "bbox": [
        -163.0137228,
        69.73194807,
        -11.05306957,
        -162.9990223,
        69.73711201,
        19.64693043
      ],
      "properties": {
        "datetime": "2019-08-05T21:15:38Z",
        "pc:count": 4265617,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352660.2457,
            "count": 4265617,
            "maximum": -352391.2376,
            "minimum": -352905.4176,
            "name": "X",
            "position": 0,
            "stddev": 137.4191295,
            "variance": 18884.01714
          },
          {
            "average": 2219635.978,
            "count": 4265617,
            "maximum": 2219890.515,
            "minimum": 2219388.195,
            "name": "Y",
            "position": 1,
            "stddev": 130.6639381,
            "variance": 17073.06472
          },
          {
            "average": 4.862517833,
            "count": 4265617,
            "maximum": 19.64693043,
            "minimum": -11.05306957,
            "name": "Z",
            "position": 2,
            "stddev": 0.7802905417,
            "variance": 0.6088533294
          },
          {
            "average": 37656.58353,
            "count": 4265617,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14249.12643,
            "variance": 203037603.9
          },
          {
            "average": 1.000821687,
            "count": 4265617,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02913202033,
            "variance": 0.0008486746085
          },
          {
            "average": 1.00164267,
            "count": 4265617,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04150856483,
            "variance": 0.001722960954
          },
          {
            "average": 0.5063098726,
            "count": 4265617,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999602425,
            "variance": 0.2499602441
          },
          {
            "average": 0.0003732168172,
            "count": 4265617,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01931521716,
            "variance": 0.0003730776138
          },
          {
            "average": 1.243713864,
            "count": 4265617,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.462907754,
            "variance": 0.2142835887
          },
          {
            "average": 1.691844261,
            "count": 4265617,
            "maximum": 16.7159996,
            "minimum": -15.67199993,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.40785872,
            "variance": 108.3235231
          },
          {
            "average": 0.5350016188,
            "count": 4265617,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987734406,
            "variance": 0.248774945
          },
          {
            "average": 261.742946,
            "count": 4265617,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.14255436,
            "variance": 293.8671699
          },
          {
            "average": 249074073.8,
            "count": 4265617,
            "maximum": 249074938.8,
            "minimum": 249071346.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1238.714862,
            "variance": 1534414.51
          },
          {
            "average": 0.5350016188,
            "count": 4265617,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987734406,
            "variance": 0.248774945
          },
          {
            "average": 0,
            "count": 4265617,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4265617,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4265617,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2377963141,
            "count": 4265617,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4257338013,
            "variance": 0.1812492696
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352905.4176,
          2219388.195,
          -11.05306957,
          -352391.2376,
          2219890.515,
          19.64693043
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352905.41758663143,
                2219388.194738077,
                -11.053069571751745
              ],
              [
                -352905.41758663143,
                2219890.5147380773,
                -11.053069571751745
              ],
              [
                -352391.2375866314,
                2219890.5147380773,
                19.646930428248254
              ],
              [
                -352391.2375866314,
                2219388.194738077,
                19.646930428248254
              ],
              [
                -352905.41758663143,
                2219388.194738077,
                -11.053069571751745
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:15:38+00:00",
        "end_time": "2019-08-05T20:15:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00103.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00103.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00103.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00103.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0137228,
            69.73194807,
            -11.05306957,
            -162.9990223,
            69.73711201,
            19.64693043
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01199246416118,
                  69.73194807229201,
                  -11.053069571751745
                ],
                [
                  -163.01372283369267,
                  69.73647906928201,
                  -11.053069571751745
                ],
                [
                  -163.0007502682982,
                  69.73711201251753,
                  19.646930428248254
                ],
                [
                  -162.99902232779613,
                  69.7325808804144,
                  19.646930428248254
                ],
                [
                  -163.01199246416118,
                  69.73194807229201,
                  -11.053069571751745
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00103.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00103.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:15:38Z",
            "pc:count": 4265617,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352660.2457,
                "count": 4265617,
                "maximum": -352391.2376,
                "minimum": -352905.4176,
                "name": "X",
                "position": 0,
                "stddev": 137.4191295,
                "variance": 18884.01714
              },
              {
                "average": 2219635.978,
                "count": 4265617,
                "maximum": 2219890.515,
                "minimum": 2219388.195,
                "name": "Y",
                "position": 1,
                "stddev": 130.6639381,
                "variance": 17073.06472
              },
              {
                "average": 4.862517833,
                "count": 4265617,
                "maximum": 19.64693043,
                "minimum": -11.05306957,
                "name": "Z",
                "position": 2,
                "stddev": 0.7802905417,
                "variance": 0.6088533294
              },
              {
                "average": 37656.58353,
                "count": 4265617,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14249.12643,
                "variance": 203037603.9
              },
              {
                "average": 1.000821687,
                "count": 4265617,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02913202033,
                "variance": 0.0008486746085
              },
              {
                "average": 1.00164267,
                "count": 4265617,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04150856483,
                "variance": 0.001722960954
              },
              {
                "average": 0.5063098726,
                "count": 4265617,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999602425,
                "variance": 0.2499602441
              },
              {
                "average": 0.0003732168172,
                "count": 4265617,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01931521716,
                "variance": 0.0003730776138
              },
              {
                "average": 1.243713864,
                "count": 4265617,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.462907754,
                "variance": 0.2142835887
              },
              {
                "average": 1.691844261,
                "count": 4265617,
                "maximum": 16.7159996,
                "minimum": -15.67199993,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.40785872,
                "variance": 108.3235231
              },
              {
                "average": 0.5350016188,
                "count": 4265617,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987734406,
                "variance": 0.248774945
              },
              {
                "average": 261.742946,
                "count": 4265617,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.14255436,
                "variance": 293.8671699
              },
              {
                "average": 249074073.8,
                "count": 4265617,
                "maximum": 249074938.8,
                "minimum": 249071346.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1238.714862,
                "variance": 1534414.51
              },
              {
                "average": 0.5350016188,
                "count": 4265617,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987734406,
                "variance": 0.248774945
              },
              {
                "average": 0,
                "count": 4265617,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4265617,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4265617,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2377963141,
                "count": 4265617,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4257338013,
                "variance": 0.1812492696
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352905.4176,
              2219388.195,
              -11.05306957,
              -352391.2376,
              2219890.515,
              19.64693043
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352905.41758663143,
                    2219388.194738077,
                    -11.053069571751745
                  ],
                  [
                    -352905.41758663143,
                    2219890.5147380773,
                    -11.053069571751745
                  ],
                  [
                    -352391.2375866314,
                    2219890.5147380773,
                    19.646930428248254
                  ],
                  [
                    -352391.2375866314,
                    2219388.194738077,
                    19.646930428248254
                  ],
                  [
                    -352905.41758663143,
                    2219388.194738077,
                    -11.053069571751745
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:15:38+00:00",
            "end_time": "2019-08-05T20:15:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00119.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.02779218098033,
              69.73630280826487,
              1.100901974039838
            ],
            [
              -163.02861918965175,
              69.73846436076762,
              1.100901974039838
            ],
            [
              -163.02431385612772,
              69.73867486207173,
              1.380901974039838
            ],
            [
              -163.02348723206038,
              69.7365132881278,
              1.380901974039838
            ],
            [
              -163.02779218098033,
              69.73630280826487,
              1.100901974039838
            ]
          ]
        ]
      },
      "bbox": [
        -163.0286192,
        69.73630281,
        1.100901974,
        -163.0234872,
        69.73867486,
        1.380901974
      ],
      "properties": {
        "datetime": "2019-08-05T21:09:45Z",
        "pc:count": 404868,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353356.5592,
            "count": 404868,
            "maximum": -353284.8501,
            "minimum": -353455.4901,
            "name": "X",
            "position": 0,
            "stddev": 39.71825491,
            "variance": 1577.539773
          },
          {
            "average": 2220038.426,
            "count": 404868,
            "maximum": 2220185.794,
            "minimum": 2219946.154,
            "name": "Y",
            "position": 1,
            "stddev": 54.95957578,
            "variance": 3020.55497
          },
          {
            "average": 1.259605576,
            "count": 404868,
            "maximum": 1.380901974,
            "minimum": 1.100901974,
            "name": "Z",
            "position": 2,
            "stddev": 0.02742363958,
            "variance": 0.0007520560077
          },
          {
            "average": 15395.94993,
            "count": 404868,
            "maximum": 65535,
            "minimum": 1188,
            "name": "Intensity",
            "position": 3,
            "stddev": 7648.379061,
            "variance": 58497702.26
          },
          {
            "average": 1,
            "count": 404868,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 404868,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5369873638,
            "count": 404868,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.498630674,
            "variance": 0.248632549
          },
          {
            "average": 0.000192655384,
            "count": 404868,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01387871549,
            "variance": 0.0001926187436
          },
          {
            "average": 8.061639843,
            "count": 404868,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.467340944,
            "variance": 6.087771333
          },
          {
            "average": -3.872874745,
            "count": 404868,
            "maximum": 16.17000008,
            "minimum": -10.54800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.83981487,
            "variance": 46.78306746
          },
          {
            "average": 0.5504658308,
            "count": 404868,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4974472948,
            "variance": 0.2474538111
          },
          {
            "average": 251.8001274,
            "count": 404868,
            "maximum": 254,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.298572997,
            "variance": 1.686291828
          },
          {
            "average": 249074217.1,
            "count": 404868,
            "maximum": 249074585.6,
            "minimum": 249073897.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 226.1323089,
            "variance": 51135.82113
          },
          {
            "average": 0.5504658308,
            "count": 404868,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4974472948,
            "variance": 0.2474538111
          },
          {
            "average": 0,
            "count": 404868,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 404868,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 404868,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1045847042,
            "count": 404868,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3060179327,
            "variance": 0.09364697511
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353455.4901,
          2219946.154,
          1.100901974,
          -353284.8501,
          2220185.794,
          1.380901974
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353455.49012420035,
                2219946.154289762,
                1.100901974039838
              ],
              [
                -353455.49012420035,
                2220185.7942897617,
                1.100901974039838
              ],
              [
                -353284.85012420034,
                2220185.7942897617,
                1.380901974039838
              ],
              [
                -353284.85012420034,
                2219946.154289762,
                1.380901974039838
              ],
              [
                -353455.49012420035,
                2219946.154289762,
                1.100901974039838
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:09:45+00:00",
        "end_time": "2019-08-05T20:58:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00119.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00119.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00119.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00119.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0286192,
            69.73630281,
            1.100901974,
            -163.0234872,
            69.73867486,
            1.380901974
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.02779218098033,
                  69.73630280826487,
                  1.100901974039838
                ],
                [
                  -163.02861918965175,
                  69.73846436076762,
                  1.100901974039838
                ],
                [
                  -163.02431385612772,
                  69.73867486207173,
                  1.380901974039838
                ],
                [
                  -163.02348723206038,
                  69.7365132881278,
                  1.380901974039838
                ],
                [
                  -163.02779218098033,
                  69.73630280826487,
                  1.100901974039838
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00119.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00119.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:09:45Z",
            "pc:count": 404868,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353356.5592,
                "count": 404868,
                "maximum": -353284.8501,
                "minimum": -353455.4901,
                "name": "X",
                "position": 0,
                "stddev": 39.71825491,
                "variance": 1577.539773
              },
              {
                "average": 2220038.426,
                "count": 404868,
                "maximum": 2220185.794,
                "minimum": 2219946.154,
                "name": "Y",
                "position": 1,
                "stddev": 54.95957578,
                "variance": 3020.55497
              },
              {
                "average": 1.259605576,
                "count": 404868,
                "maximum": 1.380901974,
                "minimum": 1.100901974,
                "name": "Z",
                "position": 2,
                "stddev": 0.02742363958,
                "variance": 0.0007520560077
              },
              {
                "average": 15395.94993,
                "count": 404868,
                "maximum": 65535,
                "minimum": 1188,
                "name": "Intensity",
                "position": 3,
                "stddev": 7648.379061,
                "variance": 58497702.26
              },
              {
                "average": 1,
                "count": 404868,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 404868,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5369873638,
                "count": 404868,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.498630674,
                "variance": 0.248632549
              },
              {
                "average": 0.000192655384,
                "count": 404868,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01387871549,
                "variance": 0.0001926187436
              },
              {
                "average": 8.061639843,
                "count": 404868,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.467340944,
                "variance": 6.087771333
              },
              {
                "average": -3.872874745,
                "count": 404868,
                "maximum": 16.17000008,
                "minimum": -10.54800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.83981487,
                "variance": 46.78306746
              },
              {
                "average": 0.5504658308,
                "count": 404868,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4974472948,
                "variance": 0.2474538111
              },
              {
                "average": 251.8001274,
                "count": 404868,
                "maximum": 254,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.298572997,
                "variance": 1.686291828
              },
              {
                "average": 249074217.1,
                "count": 404868,
                "maximum": 249074585.6,
                "minimum": 249073897.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 226.1323089,
                "variance": 51135.82113
              },
              {
                "average": 0.5504658308,
                "count": 404868,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4974472948,
                "variance": 0.2474538111
              },
              {
                "average": 0,
                "count": 404868,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 404868,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 404868,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1045847042,
                "count": 404868,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3060179327,
                "variance": 0.09364697511
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353455.4901,
              2219946.154,
              1.100901974,
              -353284.8501,
              2220185.794,
              1.380901974
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353455.49012420035,
                    2219946.154289762,
                    1.100901974039838
                  ],
                  [
                    -353455.49012420035,
                    2220185.7942897617,
                    1.100901974039838
                  ],
                  [
                    -353284.85012420034,
                    2220185.7942897617,
                    1.380901974039838
                  ],
                  [
                    -353284.85012420034,
                    2219946.154289762,
                    1.380901974039838
                  ],
                  [
                    -353455.49012420035,
                    2219946.154289762,
                    1.100901974039838
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:09:45+00:00",
            "end_time": "2019-08-05T20:58:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00186.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01297492752997,
              69.7524393411507,
              1.070257155052875
            ],
            [
              -163.0147051859007,
              69.75696610359553,
              1.070257155052875
            ],
            [
              -163.00171942415398,
              69.75759927854335,
              16.050257155052876
            ],
            [
              -162.99999159684907,
              69.75307238091258,
              16.050257155052876
            ],
            [
              -163.01297492752997,
              69.7524393411507,
              1.070257155052875
            ]
          ]
        ]
      },
      "bbox": [
        -163.0147052,
        69.75243934,
        1.070257155,
        -162.9999916,
        69.75759928,
        16.05025716
      ],
      "properties": {
        "datetime": "2019-08-05T21:16:18Z",
        "pc:count": 4392783,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352396.0674,
            "count": 4392783,
            "maximum": -352124.8708,
            "minimum": -352639.1308,
            "name": "X",
            "position": 0,
            "stddev": 136.6993496,
            "variance": 18686.71217
          },
          {
            "average": 2221872.454,
            "count": 4392783,
            "maximum": 2222125.265,
            "minimum": 2221623.465,
            "name": "Y",
            "position": 1,
            "stddev": 131.6381749,
            "variance": 17328.60909
          },
          {
            "average": 3.91887713,
            "count": 4392783,
            "maximum": 16.05025716,
            "minimum": 1.070257155,
            "name": "Z",
            "position": 2,
            "stddev": 2.781843571,
            "variance": 7.738653652
          },
          {
            "average": 37226.30018,
            "count": 4392783,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 19238.2641,
            "variance": 370110805.5
          },
          {
            "average": 1.000006146,
            "count": 4392783,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002479195197,
            "variance": 6.146408824e-06
          },
          {
            "average": 1.000012293,
            "count": 4392783,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003506100696,
            "variance": 1.229274209e-05
          },
          {
            "average": 0.505120558,
            "count": 4392783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999738361,
            "variance": 0.2499738368
          },
          {
            "average": 0.0003562661757,
            "count": 4392783,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01887165417,
            "variance": 0.0003561393312
          },
          {
            "average": 2.993739732,
            "count": 4392783,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.304784202,
            "variance": 10.92159862
          },
          {
            "average": 2.574052029,
            "count": 4392783,
            "maximum": 16.33799934,
            "minimum": -15.55799961,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.33924036,
            "variance": 106.8998913
          },
          {
            "average": 0.5371410334,
            "count": 4392783,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4986186922,
            "variance": 0.2486206002
          },
          {
            "average": 261.2198288,
            "count": 4392783,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.69261055,
            "variance": 278.6432471
          },
          {
            "average": 249074096.9,
            "count": 4392783,
            "maximum": 249074978.1,
            "minimum": 249071313.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1218.967457,
            "variance": 1485881.661
          },
          {
            "average": 0.5371410334,
            "count": 4392783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4986186922,
            "variance": 0.2486206002
          },
          {
            "average": 0,
            "count": 4392783,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4392783,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4392783,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.251693744,
            "count": 4392783,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.433986228,
            "variance": 0.1883440461
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352639.1308,
          2221623.465,
          1.070257155,
          -352124.8708,
          2222125.265,
          16.05025716
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352639.1308417561,
                2221623.465448947,
                1.070257155052875
              ],
              [
                -352639.1308417561,
                2222125.265448947,
                1.070257155052875
              ],
              [
                -352124.8708417561,
                2222125.265448947,
                16.050257155052876
              ],
              [
                -352124.8708417561,
                2221623.465448947,
                16.050257155052876
              ],
              [
                -352639.1308417561,
                2221623.465448947,
                1.070257155052875
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:16:18+00:00",
        "end_time": "2019-08-05T20:15:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00186.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00186.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00186.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00186.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0147052,
            69.75243934,
            1.070257155,
            -162.9999916,
            69.75759928,
            16.05025716
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01297492752997,
                  69.7524393411507,
                  1.070257155052875
                ],
                [
                  -163.0147051859007,
                  69.75696610359553,
                  1.070257155052875
                ],
                [
                  -163.00171942415398,
                  69.75759927854335,
                  16.050257155052876
                ],
                [
                  -162.99999159684907,
                  69.75307238091258,
                  16.050257155052876
                ],
                [
                  -163.01297492752997,
                  69.7524393411507,
                  1.070257155052875
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00186.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00186.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:16:18Z",
            "pc:count": 4392783,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352396.0674,
                "count": 4392783,
                "maximum": -352124.8708,
                "minimum": -352639.1308,
                "name": "X",
                "position": 0,
                "stddev": 136.6993496,
                "variance": 18686.71217
              },
              {
                "average": 2221872.454,
                "count": 4392783,
                "maximum": 2222125.265,
                "minimum": 2221623.465,
                "name": "Y",
                "position": 1,
                "stddev": 131.6381749,
                "variance": 17328.60909
              },
              {
                "average": 3.91887713,
                "count": 4392783,
                "maximum": 16.05025716,
                "minimum": 1.070257155,
                "name": "Z",
                "position": 2,
                "stddev": 2.781843571,
                "variance": 7.738653652
              },
              {
                "average": 37226.30018,
                "count": 4392783,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 19238.2641,
                "variance": 370110805.5
              },
              {
                "average": 1.000006146,
                "count": 4392783,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002479195197,
                "variance": 6.146408824e-06
              },
              {
                "average": 1.000012293,
                "count": 4392783,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003506100696,
                "variance": 1.229274209e-05
              },
              {
                "average": 0.505120558,
                "count": 4392783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999738361,
                "variance": 0.2499738368
              },
              {
                "average": 0.0003562661757,
                "count": 4392783,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01887165417,
                "variance": 0.0003561393312
              },
              {
                "average": 2.993739732,
                "count": 4392783,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.304784202,
                "variance": 10.92159862
              },
              {
                "average": 2.574052029,
                "count": 4392783,
                "maximum": 16.33799934,
                "minimum": -15.55799961,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.33924036,
                "variance": 106.8998913
              },
              {
                "average": 0.5371410334,
                "count": 4392783,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4986186922,
                "variance": 0.2486206002
              },
              {
                "average": 261.2198288,
                "count": 4392783,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.69261055,
                "variance": 278.6432471
              },
              {
                "average": 249074096.9,
                "count": 4392783,
                "maximum": 249074978.1,
                "minimum": 249071313.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1218.967457,
                "variance": 1485881.661
              },
              {
                "average": 0.5371410334,
                "count": 4392783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4986186922,
                "variance": 0.2486206002
              },
              {
                "average": 0,
                "count": 4392783,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4392783,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4392783,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.251693744,
                "count": 4392783,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.433986228,
                "variance": 0.1883440461
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352639.1308,
              2221623.465,
              1.070257155,
              -352124.8708,
              2222125.265,
              16.05025716
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352639.1308417561,
                    2221623.465448947,
                    1.070257155052875
                  ],
                  [
                    -352639.1308417561,
                    2222125.265448947,
                    1.070257155052875
                  ],
                  [
                    -352124.8708417561,
                    2222125.265448947,
                    16.050257155052876
                  ],
                  [
                    -352124.8708417561,
                    2221623.465448947,
                    16.050257155052876
                  ],
                  [
                    -352639.1308417561,
                    2221623.465448947,
                    1.070257155052875
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:16:18+00:00",
            "end_time": "2019-08-05T20:15:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00104.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0001738708609,
              69.7320160814712,
              2.99258975905332
            ],
            [
              -163.00190171473676,
              69.7365464684155,
              2.99258975905332
            ],
            [
              -162.98892577011162,
              69.73717873368322,
              27.892589759053322
            ],
            [
              -162.9872003556992,
              69.73264821178815,
              27.892589759053322
            ],
            [
              -163.0001738708609,
              69.7320160814712,
              2.99258975905332
            ]
          ]
        ]
      },
      "bbox": [
        -163.0019017,
        69.73201608,
        2.992589759,
        -162.9872004,
        69.73717873,
        27.89258976
      ],
      "properties": {
        "datetime": "2019-08-05T21:18:58Z",
        "pc:count": 4374070,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352179.1824,
            "count": 4374070,
            "maximum": -351930.1364,
            "minimum": -352444.4364,
            "name": "X",
            "position": 0,
            "stddev": 130.4512837,
            "variance": 17017.53743
          },
          {
            "average": 2219576.293,
            "count": 4374070,
            "maximum": 2219835.074,
            "minimum": 2219332.834,
            "name": "Y",
            "position": 1,
            "stddev": 131.9304096,
            "variance": 17405.63298
          },
          {
            "average": 3.777743586,
            "count": 4374070,
            "maximum": 27.89258976,
            "minimum": 2.992589759,
            "name": "Z",
            "position": 2,
            "stddev": 0.634044595,
            "variance": 0.4020125485
          },
          {
            "average": 34706.86443,
            "count": 4374070,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 11874.81853,
            "variance": 141011315.1
          },
          {
            "average": 1.000052354,
            "count": 4374070,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00736072128,
            "variance": 5.418021776e-05
          },
          {
            "average": 1.000104708,
            "count": 4374070,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01049685259,
            "variance": 0.0001101839143
          },
          {
            "average": 0.4898805918,
            "count": 4374070,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998976442,
            "variance": 0.2498976547
          },
          {
            "average": 0.0004270622098,
            "count": 4374070,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0206610727,
            "variance": 0.0004268799253
          },
          {
            "average": 1.204794391,
            "count": 4374070,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4058234903,
            "variance": 0.1646927053
          },
          {
            "average": 4.458676319,
            "count": 4374070,
            "maximum": 21.63599968,
            "minimum": -15.97799969,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.1962911,
            "variance": 125.3569344
          },
          {
            "average": 0.4869869481,
            "count": 4374070,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998306889,
            "variance": 0.2498307176
          },
          {
            "average": 269.9576561,
            "count": 4374070,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.8023522,
            "variance": 432.7378572
          },
          {
            "average": 249073826,
            "count": 4374070,
            "maximum": 249075138.7,
            "minimum": 249071347.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1609.534757,
            "variance": 2590602.133
          },
          {
            "average": 0.4869869481,
            "count": 4374070,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998306889,
            "variance": 0.2498307176
          },
          {
            "average": 0,
            "count": 4374070,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4374070,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4374070,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2351658753,
            "count": 4374070,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4241024964,
            "variance": 0.1798629275
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352444.4364,
          2219332.834,
          2.992589759,
          -351930.1364,
          2219835.074,
          27.89258976
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352444.4363960841,
                2219332.8341444656,
                2.99258975905332
              ],
              [
                -352444.4363960841,
                2219835.074144466,
                2.99258975905332
              ],
              [
                -351930.13639608404,
                2219835.074144466,
                27.892589759053322
              ],
              [
                -351930.13639608404,
                2219332.8341444656,
                27.892589759053322
              ],
              [
                -352444.4363960841,
                2219332.8341444656,
                2.99258975905332
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:18:58+00:00",
        "end_time": "2019-08-05T20:15:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00104.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00104.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00104.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00104.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0019017,
            69.73201608,
            2.992589759,
            -162.9872004,
            69.73717873,
            27.89258976
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0001738708609,
                  69.7320160814712,
                  2.99258975905332
                ],
                [
                  -163.00190171473676,
                  69.7365464684155,
                  2.99258975905332
                ],
                [
                  -162.98892577011162,
                  69.73717873368322,
                  27.892589759053322
                ],
                [
                  -162.9872003556992,
                  69.73264821178815,
                  27.892589759053322
                ],
                [
                  -163.0001738708609,
                  69.7320160814712,
                  2.99258975905332
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00104.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00104.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:18:58Z",
            "pc:count": 4374070,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352179.1824,
                "count": 4374070,
                "maximum": -351930.1364,
                "minimum": -352444.4364,
                "name": "X",
                "position": 0,
                "stddev": 130.4512837,
                "variance": 17017.53743
              },
              {
                "average": 2219576.293,
                "count": 4374070,
                "maximum": 2219835.074,
                "minimum": 2219332.834,
                "name": "Y",
                "position": 1,
                "stddev": 131.9304096,
                "variance": 17405.63298
              },
              {
                "average": 3.777743586,
                "count": 4374070,
                "maximum": 27.89258976,
                "minimum": 2.992589759,
                "name": "Z",
                "position": 2,
                "stddev": 0.634044595,
                "variance": 0.4020125485
              },
              {
                "average": 34706.86443,
                "count": 4374070,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 11874.81853,
                "variance": 141011315.1
              },
              {
                "average": 1.000052354,
                "count": 4374070,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00736072128,
                "variance": 5.418021776e-05
              },
              {
                "average": 1.000104708,
                "count": 4374070,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01049685259,
                "variance": 0.0001101839143
              },
              {
                "average": 0.4898805918,
                "count": 4374070,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998976442,
                "variance": 0.2498976547
              },
              {
                "average": 0.0004270622098,
                "count": 4374070,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0206610727,
                "variance": 0.0004268799253
              },
              {
                "average": 1.204794391,
                "count": 4374070,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4058234903,
                "variance": 0.1646927053
              },
              {
                "average": 4.458676319,
                "count": 4374070,
                "maximum": 21.63599968,
                "minimum": -15.97799969,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.1962911,
                "variance": 125.3569344
              },
              {
                "average": 0.4869869481,
                "count": 4374070,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998306889,
                "variance": 0.2498307176
              },
              {
                "average": 269.9576561,
                "count": 4374070,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.8023522,
                "variance": 432.7378572
              },
              {
                "average": 249073826,
                "count": 4374070,
                "maximum": 249075138.7,
                "minimum": 249071347.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1609.534757,
                "variance": 2590602.133
              },
              {
                "average": 0.4869869481,
                "count": 4374070,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998306889,
                "variance": 0.2498307176
              },
              {
                "average": 0,
                "count": 4374070,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4374070,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4374070,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2351658753,
                "count": 4374070,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4241024964,
                "variance": 0.1798629275
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352444.4364,
              2219332.834,
              2.992589759,
              -351930.1364,
              2219835.074,
              27.89258976
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352444.4363960841,
                    2219332.8341444656,
                    2.99258975905332
                  ],
                  [
                    -352444.4363960841,
                    2219835.074144466,
                    2.99258975905332
                  ],
                  [
                    -351930.13639608404,
                    2219835.074144466,
                    27.892589759053322
                  ],
                  [
                    -351930.13639608404,
                    2219332.8341444656,
                    27.892589759053322
                  ],
                  [
                    -352444.4363960841,
                    2219332.8341444656,
                    2.99258975905332
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:18:58+00:00",
            "end_time": "2019-08-05T20:15:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00120.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0240111525498,
              69.73597998155495,
              0.68519689837072
            ],
            [
              -163.02568248312988,
              69.74034985748189,
              0.68519689837072
            ],
            [
              -163.0127096354419,
              69.74098357428049,
              74.82519689837072
            ],
            [
              -163.011040647798,
              69.73661356785736,
              74.82519689837072
            ],
            [
              -163.0240111525498,
              69.73597998155495,
              0.68519689837072
            ]
          ]
        ]
      },
      "bbox": [
        -163.0256825,
        69.73597998,
        0.6851968984,
        -163.0110406,
        69.74098357,
        74.8251969
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:57Z",
        "pc:count": 4421127,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353044.7408,
            "count": 4421127,
            "maximum": -352799.0515,
            "minimum": -353313.1715,
            "name": "X",
            "position": 0,
            "stddev": 132.0012066,
            "variance": 17424.31854
          },
          {
            "average": 2220125.695,
            "count": 4421127,
            "maximum": 2220375.362,
            "minimum": 2219890.902,
            "name": "Y",
            "position": 1,
            "stddev": 123.2330711,
            "variance": 15186.38981
          },
          {
            "average": 5.024872117,
            "count": 4421127,
            "maximum": 74.8251969,
            "minimum": 0.6851968984,
            "name": "Z",
            "position": 2,
            "stddev": 3.215821573,
            "variance": 10.34150839
          },
          {
            "average": 40757.43177,
            "count": 4421127,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 18366.34686,
            "variance": 337322696.9
          },
          {
            "average": 1.00111985,
            "count": 4421127,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03386880461,
            "variance": 0.001147095926
          },
          {
            "average": 1.002235629,
            "count": 4421127,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04807916778,
            "variance": 0.002311606374
          },
          {
            "average": 0.4951445638,
            "count": 4421127,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999764807,
            "variance": 0.2499764813
          },
          {
            "average": 0.0004863013435,
            "count": 4421127,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02204688106,
            "variance": 0.0004860649645
          },
          {
            "average": 2.22502362,
            "count": 4421127,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.658169312,
            "variance": 7.065864093
          },
          {
            "average": -2.595097236,
            "count": 4421127,
            "maximum": 16.19400024,
            "minimum": -21.16799927,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.003251,
            "variance": 121.0715327
          },
          {
            "average": 0.4804921912,
            "count": 4421127,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499619357,
            "variance": 0.2496195019
          },
          {
            "average": 257.8789313,
            "count": 4421127,
            "maximum": 300,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.83726861,
            "variance": 220.1445398
          },
          {
            "average": 249074046.6,
            "count": 4421127,
            "maximum": 249075497.4,
            "minimum": 249071339.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 991.6624734,
            "variance": 983394.4612
          },
          {
            "average": 0.4804921912,
            "count": 4421127,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499619357,
            "variance": 0.2496195019
          },
          {
            "average": 0,
            "count": 4421127,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4421127,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4421127,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2374179706,
            "count": 4421127,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4255005509,
            "variance": 0.1810507188
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353313.1715,
          2219890.902,
          0.6851968984,
          -352799.0515,
          2220375.362,
          74.8251969
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353313.17151534715,
                2219890.9016812113,
                0.68519689837072
              ],
              [
                -353313.17151534715,
                2220375.3616812113,
                0.68519689837072
              ],
              [
                -352799.05151534715,
                2220375.3616812113,
                74.82519689837072
              ],
              [
                -352799.05151534715,
                2219890.9016812113,
                74.82519689837072
              ],
              [
                -353313.17151534715,
                2219890.9016812113,
                0.68519689837072
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:57+00:00",
        "end_time": "2019-08-05T20:15:39+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00120.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00120.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00120.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00120.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0256825,
            69.73597998,
            0.6851968984,
            -163.0110406,
            69.74098357,
            74.8251969
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0240111525498,
                  69.73597998155495,
                  0.68519689837072
                ],
                [
                  -163.02568248312988,
                  69.74034985748189,
                  0.68519689837072
                ],
                [
                  -163.0127096354419,
                  69.74098357428049,
                  74.82519689837072
                ],
                [
                  -163.011040647798,
                  69.73661356785736,
                  74.82519689837072
                ],
                [
                  -163.0240111525498,
                  69.73597998155495,
                  0.68519689837072
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00120.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00120.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:57Z",
            "pc:count": 4421127,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353044.7408,
                "count": 4421127,
                "maximum": -352799.0515,
                "minimum": -353313.1715,
                "name": "X",
                "position": 0,
                "stddev": 132.0012066,
                "variance": 17424.31854
              },
              {
                "average": 2220125.695,
                "count": 4421127,
                "maximum": 2220375.362,
                "minimum": 2219890.902,
                "name": "Y",
                "position": 1,
                "stddev": 123.2330711,
                "variance": 15186.38981
              },
              {
                "average": 5.024872117,
                "count": 4421127,
                "maximum": 74.8251969,
                "minimum": 0.6851968984,
                "name": "Z",
                "position": 2,
                "stddev": 3.215821573,
                "variance": 10.34150839
              },
              {
                "average": 40757.43177,
                "count": 4421127,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 18366.34686,
                "variance": 337322696.9
              },
              {
                "average": 1.00111985,
                "count": 4421127,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03386880461,
                "variance": 0.001147095926
              },
              {
                "average": 1.002235629,
                "count": 4421127,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04807916778,
                "variance": 0.002311606374
              },
              {
                "average": 0.4951445638,
                "count": 4421127,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999764807,
                "variance": 0.2499764813
              },
              {
                "average": 0.0004863013435,
                "count": 4421127,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02204688106,
                "variance": 0.0004860649645
              },
              {
                "average": 2.22502362,
                "count": 4421127,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.658169312,
                "variance": 7.065864093
              },
              {
                "average": -2.595097236,
                "count": 4421127,
                "maximum": 16.19400024,
                "minimum": -21.16799927,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.003251,
                "variance": 121.0715327
              },
              {
                "average": 0.4804921912,
                "count": 4421127,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499619357,
                "variance": 0.2496195019
              },
              {
                "average": 257.8789313,
                "count": 4421127,
                "maximum": 300,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.83726861,
                "variance": 220.1445398
              },
              {
                "average": 249074046.6,
                "count": 4421127,
                "maximum": 249075497.4,
                "minimum": 249071339.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 991.6624734,
                "variance": 983394.4612
              },
              {
                "average": 0.4804921912,
                "count": 4421127,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499619357,
                "variance": 0.2496195019
              },
              {
                "average": 0,
                "count": 4421127,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4421127,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4421127,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2374179706,
                "count": 4421127,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4255005509,
                "variance": 0.1810507188
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353313.1715,
              2219890.902,
              0.6851968984,
              -352799.0515,
              2220375.362,
              74.8251969
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353313.17151534715,
                    2219890.9016812113,
                    0.68519689837072
                  ],
                  [
                    -353313.17151534715,
                    2220375.3616812113,
                    0.68519689837072
                  ],
                  [
                    -352799.05151534715,
                    2220375.3616812113,
                    74.82519689837072
                  ],
                  [
                    -352799.05151534715,
                    2219890.9016812113,
                    74.82519689837072
                  ],
                  [
                    -353313.17151534715,
                    2219890.9016812113,
                    0.68519689837072
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:57+00:00",
            "end_time": "2019-08-05T20:15:39+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00122.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00036568057354,
              69.73611453756975,
              3.413944715301612
            ],
            [
              -163.00209406584528,
              69.74064555692716,
              3.413944715301612
            ],
            [
              -162.98911790463538,
              69.74127775025303,
              23.993944715301616
            ],
            [
              -162.98739194957432,
              69.7367465959115,
              23.993944715301616
            ],
            [
              -163.00036568057354,
              69.73611453756975,
              3.413944715301612
            ]
          ]
        ]
      },
      "bbox": [
        -163.0020941,
        69.73611454,
        3.413944715,
        -162.9873919,
        69.74127775,
        23.99394472
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:40Z",
        "pc:count": 4713699,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352123.2704,
            "count": 4713699,
            "maximum": -351876.8562,
            "minimum": -352391.0762,
            "name": "X",
            "position": 0,
            "stddev": 130.2700275,
            "variance": 16970.28006
          },
          {
            "average": 2220038.969,
            "count": 4713699,
            "maximum": 2220282.214,
            "minimum": 2219779.914,
            "name": "Y",
            "position": 1,
            "stddev": 131.1308455,
            "variance": 17195.29865
          },
          {
            "average": 4.061010987,
            "count": 4713699,
            "maximum": 23.99394472,
            "minimum": 3.413944715,
            "name": "Z",
            "position": 2,
            "stddev": 0.1900278459,
            "variance": 0.03611058223
          },
          {
            "average": 31667.8956,
            "count": 4713699,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 10217.69306,
            "variance": 104401251.5
          },
          {
            "average": 1.000074676,
            "count": 4713699,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008641203607,
            "variance": 7.467039977e-05
          },
          {
            "average": 1.000147655,
            "count": 4713699,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01215043083,
            "variance": 0.0001476329693
          },
          {
            "average": 0.4882528562,
            "count": 4713699,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998620386,
            "variance": 0.2498620576
          },
          {
            "average": 0.000474786362,
            "count": 4713699,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02178442197,
            "variance": 0.0004745610406
          },
          {
            "average": 1.196735303,
            "count": 4713699,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.398581037,
            "variance": 0.158866843
          },
          {
            "average": 5.453569457,
            "count": 4713699,
            "maximum": 21.40800095,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.8154019,
            "variance": 116.9729182
          },
          {
            "average": 0.4981654535,
            "count": 4713699,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999966875,
            "variance": 0.2499966875
          },
          {
            "average": 268.7482504,
            "count": 4713699,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.14049105,
            "variance": 405.6393799
          },
          {
            "average": 249073950.6,
            "count": 4713699,
            "maximum": 249075480.2,
            "minimum": 249071340.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1586.277314,
            "variance": 2516275.718
          },
          {
            "average": 0.4981654535,
            "count": 4713699,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999966875,
            "variance": 0.2499966875
          },
          {
            "average": 0,
            "count": 4713699,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4713699,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4713699,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.26136374,
            "count": 4713699,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4393777149,
            "variance": 0.1930527764
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352391.0762,
          2219779.914,
          3.413944715,
          -351876.8562,
          2220282.214,
          23.99394472
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352391.07616151066,
                2219779.9137655096,
                3.413944715301612
              ],
              [
                -352391.07616151066,
                2220282.2137655094,
                3.413944715301612
              ],
              [
                -351876.8561615107,
                2220282.2137655094,
                23.993944715301616
              ],
              [
                -351876.8561615107,
                2219779.9137655096,
                23.993944715301616
              ],
              [
                -352391.07616151066,
                2219779.9137655096,
                3.413944715301612
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:40+00:00",
        "end_time": "2019-08-05T20:15:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00122.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00122.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00122.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00122.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0020941,
            69.73611454,
            3.413944715,
            -162.9873919,
            69.74127775,
            23.99394472
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00036568057354,
                  69.73611453756975,
                  3.413944715301612
                ],
                [
                  -163.00209406584528,
                  69.74064555692716,
                  3.413944715301612
                ],
                [
                  -162.98911790463538,
                  69.74127775025303,
                  23.993944715301616
                ],
                [
                  -162.98739194957432,
                  69.7367465959115,
                  23.993944715301616
                ],
                [
                  -163.00036568057354,
                  69.73611453756975,
                  3.413944715301612
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00122.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00122.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:40Z",
            "pc:count": 4713699,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352123.2704,
                "count": 4713699,
                "maximum": -351876.8562,
                "minimum": -352391.0762,
                "name": "X",
                "position": 0,
                "stddev": 130.2700275,
                "variance": 16970.28006
              },
              {
                "average": 2220038.969,
                "count": 4713699,
                "maximum": 2220282.214,
                "minimum": 2219779.914,
                "name": "Y",
                "position": 1,
                "stddev": 131.1308455,
                "variance": 17195.29865
              },
              {
                "average": 4.061010987,
                "count": 4713699,
                "maximum": 23.99394472,
                "minimum": 3.413944715,
                "name": "Z",
                "position": 2,
                "stddev": 0.1900278459,
                "variance": 0.03611058223
              },
              {
                "average": 31667.8956,
                "count": 4713699,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 10217.69306,
                "variance": 104401251.5
              },
              {
                "average": 1.000074676,
                "count": 4713699,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008641203607,
                "variance": 7.467039977e-05
              },
              {
                "average": 1.000147655,
                "count": 4713699,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01215043083,
                "variance": 0.0001476329693
              },
              {
                "average": 0.4882528562,
                "count": 4713699,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998620386,
                "variance": 0.2498620576
              },
              {
                "average": 0.000474786362,
                "count": 4713699,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02178442197,
                "variance": 0.0004745610406
              },
              {
                "average": 1.196735303,
                "count": 4713699,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.398581037,
                "variance": 0.158866843
              },
              {
                "average": 5.453569457,
                "count": 4713699,
                "maximum": 21.40800095,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.8154019,
                "variance": 116.9729182
              },
              {
                "average": 0.4981654535,
                "count": 4713699,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999966875,
                "variance": 0.2499966875
              },
              {
                "average": 268.7482504,
                "count": 4713699,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.14049105,
                "variance": 405.6393799
              },
              {
                "average": 249073950.6,
                "count": 4713699,
                "maximum": 249075480.2,
                "minimum": 249071340.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1586.277314,
                "variance": 2516275.718
              },
              {
                "average": 0.4981654535,
                "count": 4713699,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999966875,
                "variance": 0.2499966875
              },
              {
                "average": 0,
                "count": 4713699,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4713699,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4713699,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.26136374,
                "count": 4713699,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4393777149,
                "variance": 0.1930527764
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352391.0762,
              2219779.914,
              3.413944715,
              -351876.8562,
              2220282.214,
              23.99394472
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352391.07616151066,
                    2219779.9137655096,
                    3.413944715301612
                  ],
                  [
                    -352391.07616151066,
                    2220282.2137655094,
                    3.413944715301612
                  ],
                  [
                    -351876.8561615107,
                    2220282.2137655094,
                    23.993944715301616
                  ],
                  [
                    -351876.8561615107,
                    2219779.9137655096,
                    23.993944715301616
                  ],
                  [
                    -352391.07616151066,
                    2219779.9137655096,
                    3.413944715301612
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:40+00:00",
            "end_time": "2019-08-05T20:15:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00071.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01091978687919,
              69.72461069426149,
              1.004541901869548
            ],
            [
              -163.01234043737728,
              69.72833226954982,
              1.004541901869548
            ],
            [
              -163.00036349594217,
              69.72891675447778,
              47.72454190186954
            ],
            [
              -162.99894468693182,
              69.72519507675057,
              47.72454190186954
            ],
            [
              -163.01091978687919,
              69.72461069426149,
              1.004541901869548
            ]
          ]
        ]
      },
      "bbox": [
        -163.0123404,
        69.72461069,
        1.004541902,
        -162.9989447,
        69.72891675,
        47.7245419
      ],
      "properties": {
        "datetime": "2019-08-05T21:15:22Z",
        "pc:count": 2055352,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352702.2637,
            "count": 2055352,
            "maximum": -352497.8146,
            "minimum": -352972.6946,
            "name": "X",
            "position": 0,
            "stddev": 128.1698572,
            "variance": 16427.5123
          },
          {
            "average": 2218843.689,
            "count": 2055352,
            "maximum": 2218996.514,
            "minimum": 2218583.914,
            "name": "Y",
            "position": 1,
            "stddev": 88.82839345,
            "variance": 7890.483483
          },
          {
            "average": 1.339758891,
            "count": 2055352,
            "maximum": 47.7245419,
            "minimum": 1.004541902,
            "name": "Z",
            "position": 2,
            "stddev": 0.464813916,
            "variance": 0.2160519765
          },
          {
            "average": 16781.48989,
            "count": 2055352,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13035.66936,
            "variance": 169928675.7
          },
          {
            "average": 1.000000487,
            "count": 2055352,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00069752037,
            "variance": 4.865346666e-07
          },
          {
            "average": 1.000000973,
            "count": 2055352,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0009864425273,
            "variance": 9.730688597e-07
          },
          {
            "average": 0.5122066682,
            "count": 2055352,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998510966,
            "variance": 0.2498511188
          },
          {
            "average": 0.0002510518879,
            "count": 2055352,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01584263182,
            "variance": 0.000250988983
          },
          {
            "average": 7.128212588,
            "count": 2055352,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.30588645,
            "variance": 10.92888522
          },
          {
            "average": -1.455245681,
            "count": 2055352,
            "maximum": 16.20000076,
            "minimum": -15.43200016,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.239316865,
            "variance": 67.8863424
          },
          {
            "average": 0.5089644012,
            "count": 2055352,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999197547,
            "variance": 0.2499197611
          },
          {
            "average": 271.5834572,
            "count": 2055352,
            "maximum": 307,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.46115274,
            "variance": 550.425688
          },
          {
            "average": 249073820.2,
            "count": 2055352,
            "maximum": 249074922.2,
            "minimum": 249071360.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1288.894264,
            "variance": 1661248.425
          },
          {
            "average": 0.5089644012,
            "count": 2055352,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999197547,
            "variance": 0.2499197611
          },
          {
            "average": 0,
            "count": 2055352,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2055352,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2055352,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08467989911,
            "count": 2055352,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2784048338,
            "variance": 0.07750925151
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352972.6946,
          2218583.914,
          1.004541902,
          -352497.8146,
          2218996.514,
          47.7245419
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352972.694644184,
                2218583.914478655,
                1.004541901869548
              ],
              [
                -352972.694644184,
                2218996.5144786546,
                1.004541901869548
              ],
              [
                -352497.814644184,
                2218996.5144786546,
                47.72454190186954
              ],
              [
                -352497.814644184,
                2218583.914478655,
                47.72454190186954
              ],
              [
                -352972.694644184,
                2218583.914478655,
                1.004541901869548
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:15:22+00:00",
        "end_time": "2019-08-05T20:16:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00071.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00071.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00071.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00071.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0123404,
            69.72461069,
            1.004541902,
            -162.9989447,
            69.72891675,
            47.7245419
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01091978687919,
                  69.72461069426149,
                  1.004541901869548
                ],
                [
                  -163.01234043737728,
                  69.72833226954982,
                  1.004541901869548
                ],
                [
                  -163.00036349594217,
                  69.72891675447778,
                  47.72454190186954
                ],
                [
                  -162.99894468693182,
                  69.72519507675057,
                  47.72454190186954
                ],
                [
                  -163.01091978687919,
                  69.72461069426149,
                  1.004541901869548
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00071.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00071.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:15:22Z",
            "pc:count": 2055352,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352702.2637,
                "count": 2055352,
                "maximum": -352497.8146,
                "minimum": -352972.6946,
                "name": "X",
                "position": 0,
                "stddev": 128.1698572,
                "variance": 16427.5123
              },
              {
                "average": 2218843.689,
                "count": 2055352,
                "maximum": 2218996.514,
                "minimum": 2218583.914,
                "name": "Y",
                "position": 1,
                "stddev": 88.82839345,
                "variance": 7890.483483
              },
              {
                "average": 1.339758891,
                "count": 2055352,
                "maximum": 47.7245419,
                "minimum": 1.004541902,
                "name": "Z",
                "position": 2,
                "stddev": 0.464813916,
                "variance": 0.2160519765
              },
              {
                "average": 16781.48989,
                "count": 2055352,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13035.66936,
                "variance": 169928675.7
              },
              {
                "average": 1.000000487,
                "count": 2055352,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00069752037,
                "variance": 4.865346666e-07
              },
              {
                "average": 1.000000973,
                "count": 2055352,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0009864425273,
                "variance": 9.730688597e-07
              },
              {
                "average": 0.5122066682,
                "count": 2055352,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998510966,
                "variance": 0.2498511188
              },
              {
                "average": 0.0002510518879,
                "count": 2055352,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01584263182,
                "variance": 0.000250988983
              },
              {
                "average": 7.128212588,
                "count": 2055352,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.30588645,
                "variance": 10.92888522
              },
              {
                "average": -1.455245681,
                "count": 2055352,
                "maximum": 16.20000076,
                "minimum": -15.43200016,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.239316865,
                "variance": 67.8863424
              },
              {
                "average": 0.5089644012,
                "count": 2055352,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999197547,
                "variance": 0.2499197611
              },
              {
                "average": 271.5834572,
                "count": 2055352,
                "maximum": 307,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.46115274,
                "variance": 550.425688
              },
              {
                "average": 249073820.2,
                "count": 2055352,
                "maximum": 249074922.2,
                "minimum": 249071360.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1288.894264,
                "variance": 1661248.425
              },
              {
                "average": 0.5089644012,
                "count": 2055352,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999197547,
                "variance": 0.2499197611
              },
              {
                "average": 0,
                "count": 2055352,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2055352,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2055352,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08467989911,
                "count": 2055352,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2784048338,
                "variance": 0.07750925151
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352972.6946,
              2218583.914,
              1.004541902,
              -352497.8146,
              2218996.514,
              47.7245419
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352972.694644184,
                    2218583.914478655,
                    1.004541901869548
                  ],
                  [
                    -352972.694644184,
                    2218996.5144786546,
                    1.004541901869548
                  ],
                  [
                    -352497.814644184,
                    2218996.5144786546,
                    47.72454190186954
                  ],
                  [
                    -352497.814644184,
                    2218583.914478655,
                    47.72454190186954
                  ],
                  [
                    -352972.694644184,
                    2218583.914478655,
                    1.004541901869548
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:15:22+00:00",
            "end_time": "2019-08-05T20:16:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00123.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98853885254803,
              69.73618154257727,
              3.354037313195998
            ],
            [
              -162.99026491668695,
              69.74071249301956,
              3.354037313195998
            ],
            [
              -162.97729143263223,
              69.74134371306268,
              7.654037313195998
            ],
            [
              -162.9755677982939,
              69.73681262784564,
              7.654037313195998
            ],
            [
              -162.98853885254803,
              69.73618154257727,
              3.354037313195998
            ]
          ]
        ]
      },
      "bbox": [
        -162.9902649,
        69.73618154,
        3.354037313,
        -162.9755678,
        69.74134371,
        7.654037313
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:34Z",
        "pc:count": 4072011,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351685.8279,
            "count": 4072011,
            "maximum": -351415.7604,
            "minimum": -351929.8604,
            "name": "X",
            "position": 0,
            "stddev": 129.0736642,
            "variance": 16660.0108
          },
          {
            "average": 2219986.426,
            "count": 4072011,
            "maximum": 2220226.772,
            "minimum": 2219724.492,
            "name": "Y",
            "position": 1,
            "stddev": 131.2863816,
            "variance": 17236.114
          },
          {
            "average": 3.994101726,
            "count": 4072011,
            "maximum": 7.654037313,
            "minimum": 3.354037313,
            "name": "Z",
            "position": 2,
            "stddev": 0.2425314135,
            "variance": 0.05882148654
          },
          {
            "average": 35930.31808,
            "count": 4072011,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 11230.96256,
            "variance": 126134520
          },
          {
            "average": 1.000001965,
            "count": 4072011,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001401651832,
            "variance": 1.964627858e-06
          },
          {
            "average": 1.000003929,
            "count": 4072011,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001982233083,
            "variance": 3.929247996e-06
          },
          {
            "average": 0.4967636384,
            "count": 4072011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999895872,
            "variance": 0.2499895874
          },
          {
            "average": 0.0004665999183,
            "count": 4072011,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02159588658,
            "variance": 0.0004663823174
          },
          {
            "average": 1.223002099,
            "count": 4072011,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.416880552,
            "variance": 0.1737893947
          },
          {
            "average": 2.709153319,
            "count": 4072011,
            "maximum": 21.49200058,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.49871771,
            "variance": 110.2230737
          },
          {
            "average": 0.5158912881,
            "count": 4072011,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997474645,
            "variance": 0.2497475283
          },
          {
            "average": 267.4751785,
            "count": 4072011,
            "maximum": 301,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 18.54035025,
            "variance": 343.7445876
          },
          {
            "average": 249074291.1,
            "count": 4072011,
            "maximum": 249075474.6,
            "minimum": 249071340.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1547.099042,
            "variance": 2393515.446
          },
          {
            "average": 0.5158912881,
            "count": 4072011,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997474645,
            "variance": 0.2497475283
          },
          {
            "average": 0,
            "count": 4072011,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4072011,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4072011,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2660017372,
            "count": 4072011,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4418652068,
            "variance": 0.195244861
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351929.8604,
          2219724.492,
          3.354037313,
          -351415.7604,
          2220226.772,
          7.654037313
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351929.86044569296,
                2219724.4917907272,
                3.354037313195998
              ],
              [
                -351929.86044569296,
                2220226.7717907275,
                3.354037313195998
              ],
              [
                -351415.760445693,
                2220226.7717907275,
                7.654037313195998
              ],
              [
                -351415.760445693,
                2219724.4917907272,
                7.654037313195998
              ],
              [
                -351929.86044569296,
                2219724.4917907272,
                3.354037313195998
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:34+00:00",
        "end_time": "2019-08-05T20:15:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00123.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00123.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00123.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00123.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9902649,
            69.73618154,
            3.354037313,
            -162.9755678,
            69.74134371,
            7.654037313
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98853885254803,
                  69.73618154257727,
                  3.354037313195998
                ],
                [
                  -162.99026491668695,
                  69.74071249301956,
                  3.354037313195998
                ],
                [
                  -162.97729143263223,
                  69.74134371306268,
                  7.654037313195998
                ],
                [
                  -162.9755677982939,
                  69.73681262784564,
                  7.654037313195998
                ],
                [
                  -162.98853885254803,
                  69.73618154257727,
                  3.354037313195998
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00123.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00123.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:34Z",
            "pc:count": 4072011,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351685.8279,
                "count": 4072011,
                "maximum": -351415.7604,
                "minimum": -351929.8604,
                "name": "X",
                "position": 0,
                "stddev": 129.0736642,
                "variance": 16660.0108
              },
              {
                "average": 2219986.426,
                "count": 4072011,
                "maximum": 2220226.772,
                "minimum": 2219724.492,
                "name": "Y",
                "position": 1,
                "stddev": 131.2863816,
                "variance": 17236.114
              },
              {
                "average": 3.994101726,
                "count": 4072011,
                "maximum": 7.654037313,
                "minimum": 3.354037313,
                "name": "Z",
                "position": 2,
                "stddev": 0.2425314135,
                "variance": 0.05882148654
              },
              {
                "average": 35930.31808,
                "count": 4072011,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 11230.96256,
                "variance": 126134520
              },
              {
                "average": 1.000001965,
                "count": 4072011,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001401651832,
                "variance": 1.964627858e-06
              },
              {
                "average": 1.000003929,
                "count": 4072011,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001982233083,
                "variance": 3.929247996e-06
              },
              {
                "average": 0.4967636384,
                "count": 4072011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999895872,
                "variance": 0.2499895874
              },
              {
                "average": 0.0004665999183,
                "count": 4072011,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02159588658,
                "variance": 0.0004663823174
              },
              {
                "average": 1.223002099,
                "count": 4072011,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.416880552,
                "variance": 0.1737893947
              },
              {
                "average": 2.709153319,
                "count": 4072011,
                "maximum": 21.49200058,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.49871771,
                "variance": 110.2230737
              },
              {
                "average": 0.5158912881,
                "count": 4072011,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997474645,
                "variance": 0.2497475283
              },
              {
                "average": 267.4751785,
                "count": 4072011,
                "maximum": 301,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 18.54035025,
                "variance": 343.7445876
              },
              {
                "average": 249074291.1,
                "count": 4072011,
                "maximum": 249075474.6,
                "minimum": 249071340.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1547.099042,
                "variance": 2393515.446
              },
              {
                "average": 0.5158912881,
                "count": 4072011,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997474645,
                "variance": 0.2497475283
              },
              {
                "average": 0,
                "count": 4072011,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4072011,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4072011,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2660017372,
                "count": 4072011,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4418652068,
                "variance": 0.195244861
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351929.8604,
              2219724.492,
              3.354037313,
              -351415.7604,
              2220226.772,
              7.654037313
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351929.86044569296,
                    2219724.4917907272,
                    3.354037313195998
                  ],
                  [
                    -351929.86044569296,
                    2220226.7717907275,
                    3.354037313195998
                  ],
                  [
                    -351415.760445693,
                    2220226.7717907275,
                    7.654037313195998
                  ],
                  [
                    -351415.760445693,
                    2219724.4917907272,
                    7.654037313195998
                  ],
                  [
                    -351929.86044569296,
                    2219724.4917907272,
                    3.354037313195998
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:34+00:00",
            "end_time": "2019-08-05T20:15:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00121.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01218778208803,
              69.73604612950422,
              3.636089900164915
            ],
            [
              -163.01391890112987,
              69.74057830008539,
              3.636089900164915
            ],
            [
              -163.00094561501896,
              69.74121119612388,
              39.09608990016491
            ],
            [
              -162.9992169261381,
              69.73667889037468,
              39.09608990016491
            ],
            [
              -163.01218778208803,
              69.73604612950422,
              3.636089900164915
            ]
          ]
        ]
      },
      "bbox": [
        -163.0139189,
        69.73604613,
        3.6360899,
        -162.9992169,
        69.7412112,
        39.0960899
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:51Z",
        "pc:count": 4558600,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352602.0934,
            "count": 4558600,
            "maximum": -352338.0002,
            "minimum": -352852.1202,
            "name": "X",
            "position": 0,
            "stddev": 137.7442685,
            "variance": 18973.48351
          },
          {
            "average": 2220103.686,
            "count": 4558600,
            "maximum": 2220337.68,
            "minimum": 2219835.24,
            "name": "Y",
            "position": 1,
            "stddev": 133.6313928,
            "variance": 17857.34915
          },
          {
            "average": 4.905229529,
            "count": 4558600,
            "maximum": 39.0960899,
            "minimum": 3.6360899,
            "name": "Z",
            "position": 2,
            "stddev": 1.556906121,
            "variance": 2.423956671
          },
          {
            "average": 39956.69686,
            "count": 4558600,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13426.63503,
            "variance": 180274528.1
          },
          {
            "average": 1.005969157,
            "count": 4558600,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07979069771,
            "variance": 0.00636655544
          },
          {
            "average": 1.011833458,
            "count": 4558600,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1139539079,
            "variance": 0.01298549312
          },
          {
            "average": 0.5047698855,
            "count": 4558600,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999773025,
            "variance": 0.249977303
          },
          {
            "average": 0.0004948887816,
            "count": 4558600,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02224059296,
            "variance": 0.0004946439752
          },
          {
            "average": 1.273394683,
            "count": 4558600,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.640097315,
            "variance": 0.4097245727
          },
          {
            "average": 2.749566283,
            "count": 4558600,
            "maximum": 16.40399933,
            "minimum": -15.66600037,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.51725263,
            "variance": 110.6126028
          },
          {
            "average": 0.547672531,
            "count": 4558600,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4977221957,
            "variance": 0.2477273841
          },
          {
            "average": 261.685231,
            "count": 4558600,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 16.5603468,
            "variance": 274.2450863
          },
          {
            "average": 249074183.8,
            "count": 4558600,
            "maximum": 249075491,
            "minimum": 249071340,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1262.898673,
            "variance": 1594913.059
          },
          {
            "average": 0.547672531,
            "count": 4558600,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4977221957,
            "variance": 0.2477273841
          },
          {
            "average": 0,
            "count": 4558600,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4558600,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4558600,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2929513447,
            "count": 4558600,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4551163585,
            "variance": 0.2071308998
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352852.1202,
          2219835.24,
          3.6360899,
          -352338.0002,
          2220337.68,
          39.0960899
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352852.12023038586,
                2219835.240238477,
                3.636089900164915
              ],
              [
                -352852.12023038586,
                2220337.6802384774,
                3.636089900164915
              ],
              [
                -352338.00023038586,
                2220337.6802384774,
                39.09608990016491
              ],
              [
                -352338.00023038586,
                2219835.240238477,
                39.09608990016491
              ],
              [
                -352852.12023038586,
                2219835.240238477,
                3.636089900164915
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:51+00:00",
        "end_time": "2019-08-05T20:15:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00121.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00121.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00121.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00121.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0139189,
            69.73604613,
            3.6360899,
            -162.9992169,
            69.7412112,
            39.0960899
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01218778208803,
                  69.73604612950422,
                  3.636089900164915
                ],
                [
                  -163.01391890112987,
                  69.74057830008539,
                  3.636089900164915
                ],
                [
                  -163.00094561501896,
                  69.74121119612388,
                  39.09608990016491
                ],
                [
                  -162.9992169261381,
                  69.73667889037468,
                  39.09608990016491
                ],
                [
                  -163.01218778208803,
                  69.73604612950422,
                  3.636089900164915
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00121.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00121.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:51Z",
            "pc:count": 4558600,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352602.0934,
                "count": 4558600,
                "maximum": -352338.0002,
                "minimum": -352852.1202,
                "name": "X",
                "position": 0,
                "stddev": 137.7442685,
                "variance": 18973.48351
              },
              {
                "average": 2220103.686,
                "count": 4558600,
                "maximum": 2220337.68,
                "minimum": 2219835.24,
                "name": "Y",
                "position": 1,
                "stddev": 133.6313928,
                "variance": 17857.34915
              },
              {
                "average": 4.905229529,
                "count": 4558600,
                "maximum": 39.0960899,
                "minimum": 3.6360899,
                "name": "Z",
                "position": 2,
                "stddev": 1.556906121,
                "variance": 2.423956671
              },
              {
                "average": 39956.69686,
                "count": 4558600,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13426.63503,
                "variance": 180274528.1
              },
              {
                "average": 1.005969157,
                "count": 4558600,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07979069771,
                "variance": 0.00636655544
              },
              {
                "average": 1.011833458,
                "count": 4558600,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1139539079,
                "variance": 0.01298549312
              },
              {
                "average": 0.5047698855,
                "count": 4558600,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999773025,
                "variance": 0.249977303
              },
              {
                "average": 0.0004948887816,
                "count": 4558600,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02224059296,
                "variance": 0.0004946439752
              },
              {
                "average": 1.273394683,
                "count": 4558600,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.640097315,
                "variance": 0.4097245727
              },
              {
                "average": 2.749566283,
                "count": 4558600,
                "maximum": 16.40399933,
                "minimum": -15.66600037,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.51725263,
                "variance": 110.6126028
              },
              {
                "average": 0.547672531,
                "count": 4558600,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4977221957,
                "variance": 0.2477273841
              },
              {
                "average": 261.685231,
                "count": 4558600,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 16.5603468,
                "variance": 274.2450863
              },
              {
                "average": 249074183.8,
                "count": 4558600,
                "maximum": 249075491,
                "minimum": 249071340,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1262.898673,
                "variance": 1594913.059
              },
              {
                "average": 0.547672531,
                "count": 4558600,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4977221957,
                "variance": 0.2477273841
              },
              {
                "average": 0,
                "count": 4558600,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4558600,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4558600,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2929513447,
                "count": 4558600,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4551163585,
                "variance": 0.2071308998
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352852.1202,
              2219835.24,
              3.6360899,
              -352338.0002,
              2220337.68,
              39.0960899
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352852.12023038586,
                    2219835.240238477,
                    3.636089900164915
                  ],
                  [
                    -352852.12023038586,
                    2220337.6802384774,
                    3.636089900164915
                  ],
                  [
                    -352338.00023038586,
                    2220337.6802384774,
                    39.09608990016491
                  ],
                  [
                    -352338.00023038586,
                    2219835.240238477,
                    39.09608990016491
                  ],
                  [
                    -352852.12023038586,
                    2219835.240238477,
                    3.636089900164915
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:51+00:00",
            "end_time": "2019-08-05T20:15:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00136.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0204900107973,
              69.74025797299029,
              -5.738426162620307
            ],
            [
              -163.02211656111936,
              69.74451179104409,
              -5.738426162620307
            ],
            [
              -163.01285842607223,
              69.74496389103132,
              84.1415738373797
            ],
            [
              -163.01123350364864,
              69.74070998233266,
              84.1415738373797
            ],
            [
              -163.0204900107973,
              69.74025797299029,
              -5.738426162620307
            ]
          ]
        ]
      },
      "bbox": [
        -163.0221166,
        69.74025797,
        -5.738426163,
        -163.0112335,
        69.74496389,
        84.14157384
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:56Z",
        "pc:count": 2608948,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352897.0937,
            "count": 2608948,
            "maximum": -352745.6891,
            "minimum": -353112.5291,
            "name": "X",
            "position": 0,
            "stddev": 85.01496812,
            "variance": 7227.544805
          },
          {
            "average": 2220554.248,
            "count": 2608948,
            "maximum": 2220809.325,
            "minimum": 2220337.745,
            "name": "Y",
            "position": 1,
            "stddev": 128.7289842,
            "variance": 16571.15136
          },
          {
            "average": 4.628475757,
            "count": 2608948,
            "maximum": 84.14157384,
            "minimum": -5.738426163,
            "name": "Z",
            "position": 2,
            "stddev": 4.491207745,
            "variance": 20.17094701
          },
          {
            "average": 27532.86409,
            "count": 2608948,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 19527.60675,
            "variance": 381327425.6
          },
          {
            "average": 1.003920737,
            "count": 2608948,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.06342440709,
            "variance": 0.004022655415
          },
          {
            "average": 1.007849524,
            "count": 2608948,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.09022071867,
            "variance": 0.008139778078
          },
          {
            "average": 0.4805822117,
            "count": 2608948,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499622903,
            "variance": 0.2496230452
          },
          {
            "average": 0.0004074439199,
            "count": 2608948,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02018113142,
            "variance": 0.0004072780655
          },
          {
            "average": 4.876746106,
            "count": 2608948,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.876339442,
            "variance": 15.02600747
          },
          {
            "average": 2.164601997,
            "count": 2608948,
            "maximum": 16.15800095,
            "minimum": -20.86199951,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.641835377,
            "variance": 92.96498943
          },
          {
            "average": 0.4870970981,
            "count": 2608948,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998335832,
            "variance": 0.2498336109
          },
          {
            "average": 257.5689324,
            "count": 2608948,
            "maximum": 300,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 11.98680454,
            "variance": 143.6834831
          },
          {
            "average": 249074432.3,
            "count": 2608948,
            "maximum": 249075496.8,
            "minimum": 249071333.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 982.6602081,
            "variance": 965621.0845
          },
          {
            "average": 0.4870970981,
            "count": 2608948,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998335832,
            "variance": 0.2498336109
          },
          {
            "average": 0,
            "count": 2608948,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2608948,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2608948,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1267694872,
            "count": 2608948,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3327146326,
            "variance": 0.1106990267
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353112.5291,
          2220337.745,
          -5.738426163,
          -352745.6891,
          2220809.325,
          84.14157384
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353112.5291175836,
                2220337.745466564,
                -5.738426162620307
              ],
              [
                -353112.5291175836,
                2220809.325466564,
                -5.738426162620307
              ],
              [
                -352745.6891175836,
                2220809.325466564,
                84.1415738373797
              ],
              [
                -352745.6891175836,
                2220337.745466564,
                84.1415738373797
              ],
              [
                -353112.5291175836,
                2220337.745466564,
                -5.738426162620307
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:56+00:00",
        "end_time": "2019-08-05T20:15:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00136.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00136.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00136.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00136.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0221166,
            69.74025797,
            -5.738426163,
            -163.0112335,
            69.74496389,
            84.14157384
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0204900107973,
                  69.74025797299029,
                  -5.738426162620307
                ],
                [
                  -163.02211656111936,
                  69.74451179104409,
                  -5.738426162620307
                ],
                [
                  -163.01285842607223,
                  69.74496389103132,
                  84.1415738373797
                ],
                [
                  -163.01123350364864,
                  69.74070998233266,
                  84.1415738373797
                ],
                [
                  -163.0204900107973,
                  69.74025797299029,
                  -5.738426162620307
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00136.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00136.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:56Z",
            "pc:count": 2608948,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352897.0937,
                "count": 2608948,
                "maximum": -352745.6891,
                "minimum": -353112.5291,
                "name": "X",
                "position": 0,
                "stddev": 85.01496812,
                "variance": 7227.544805
              },
              {
                "average": 2220554.248,
                "count": 2608948,
                "maximum": 2220809.325,
                "minimum": 2220337.745,
                "name": "Y",
                "position": 1,
                "stddev": 128.7289842,
                "variance": 16571.15136
              },
              {
                "average": 4.628475757,
                "count": 2608948,
                "maximum": 84.14157384,
                "minimum": -5.738426163,
                "name": "Z",
                "position": 2,
                "stddev": 4.491207745,
                "variance": 20.17094701
              },
              {
                "average": 27532.86409,
                "count": 2608948,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 19527.60675,
                "variance": 381327425.6
              },
              {
                "average": 1.003920737,
                "count": 2608948,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.06342440709,
                "variance": 0.004022655415
              },
              {
                "average": 1.007849524,
                "count": 2608948,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.09022071867,
                "variance": 0.008139778078
              },
              {
                "average": 0.4805822117,
                "count": 2608948,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499622903,
                "variance": 0.2496230452
              },
              {
                "average": 0.0004074439199,
                "count": 2608948,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02018113142,
                "variance": 0.0004072780655
              },
              {
                "average": 4.876746106,
                "count": 2608948,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.876339442,
                "variance": 15.02600747
              },
              {
                "average": 2.164601997,
                "count": 2608948,
                "maximum": 16.15800095,
                "minimum": -20.86199951,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.641835377,
                "variance": 92.96498943
              },
              {
                "average": 0.4870970981,
                "count": 2608948,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998335832,
                "variance": 0.2498336109
              },
              {
                "average": 257.5689324,
                "count": 2608948,
                "maximum": 300,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 11.98680454,
                "variance": 143.6834831
              },
              {
                "average": 249074432.3,
                "count": 2608948,
                "maximum": 249075496.8,
                "minimum": 249071333.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 982.6602081,
                "variance": 965621.0845
              },
              {
                "average": 0.4870970981,
                "count": 2608948,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998335832,
                "variance": 0.2498336109
              },
              {
                "average": 0,
                "count": 2608948,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2608948,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2608948,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1267694872,
                "count": 2608948,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3327146326,
                "variance": 0.1106990267
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353112.5291,
              2220337.745,
              -5.738426163,
              -352745.6891,
              2220809.325,
              84.14157384
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353112.5291175836,
                    2220337.745466564,
                    -5.738426162620307
                  ],
                  [
                    -353112.5291175836,
                    2220809.325466564,
                    -5.738426162620307
                  ],
                  [
                    -352745.6891175836,
                    2220809.325466564,
                    84.1415738373797
                  ],
                  [
                    -352745.6891175836,
                    2220337.745466564,
                    84.1415738373797
                  ],
                  [
                    -353112.5291175836,
                    2220337.745466564,
                    -5.738426162620307
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:56+00:00",
            "end_time": "2019-08-05T20:15:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00072.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.99951507596467,
              69.72383365095155,
              0.967715863606778
            ],
            [
              -163.00124226772618,
              69.72836403906443,
              0.967715863606778
            ],
            [
              -162.9885436811424,
              69.72898294157156,
              4.087715863606778
            ],
            [
              -162.98681886619795,
              69.72445242141849,
              4.087715863606778
            ],
            [
              -162.99951507596467,
              69.72383365095155,
              0.967715863606778
            ]
          ]
        ]
      },
      "bbox": [
        -163.0012423,
        69.72383365,
        0.9677158636,
        -162.9868189,
        69.72898294,
        4.087715864
      ],
      "properties": {
        "datetime": "2019-08-05T21:19:14Z",
        "pc:count": 4438547,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352278.4197,
            "count": 4438547,
            "maximum": -352036.7445,
            "minimum": -352540.2245,
            "name": "X",
            "position": 0,
            "stddev": 127.3886735,
            "variance": 16227.87414
          },
          {
            "average": 2218709.749,
            "count": 4438547,
            "maximum": 2218941.022,
            "minimum": 2218438.762,
            "name": "Y",
            "position": 1,
            "stddev": 126.7674254,
            "variance": 16069.98016
          },
          {
            "average": 2.391964743,
            "count": 4438547,
            "maximum": 4.087715864,
            "minimum": 0.9677158636,
            "name": "Z",
            "position": 2,
            "stddev": 0.9644788308,
            "variance": 0.930219415
          },
          {
            "average": 33048.71277,
            "count": 4438547,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 19539.52559,
            "variance": 381793060.2
          },
          {
            "average": 1.000002478,
            "count": 4438547,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001574256307,
            "variance": 2.478282919e-06
          },
          {
            "average": 1.000004957,
            "count": 4438547,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002226331861,
            "variance": 4.956553555e-06
          },
          {
            "average": 0.4923998777,
            "count": 4438547,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999422911,
            "variance": 0.2499422945
          },
          {
            "average": 0.0003525928643,
            "count": 4438547,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0187741477,
            "variance": 0.000352468622
          },
          {
            "average": 3.536971446,
            "count": 4438547,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.586020327,
            "variance": 12.85954179
          },
          {
            "average": 3.311114948,
            "count": 4438547,
            "maximum": 21.51600075,
            "minimum": -16.09799957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.941430536,
            "variance": 98.8320411
          },
          {
            "average": 0.4981380168,
            "count": 4438547,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999965893,
            "variance": 0.2499965893
          },
          {
            "average": 274.1790259,
            "count": 4438547,
            "maximum": 307,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 23.07427584,
            "variance": 532.4222055
          },
          {
            "average": 249073809.4,
            "count": 4438547,
            "maximum": 249075154.6,
            "minimum": 249071361.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1479.705896,
            "variance": 2189529.537
          },
          {
            "average": 0.4981380168,
            "count": 4438547,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999965893,
            "variance": 0.2499965893
          },
          {
            "average": 0,
            "count": 4438547,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4438547,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4438547,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1535534039,
            "count": 4438547,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3605201594,
            "variance": 0.1299747853
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352540.2245,
          2218438.762,
          0.9677158636,
          -352036.7445,
          2218941.022,
          4.087715864
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352540.22449650546,
                2218438.76192331,
                0.967715863606778
              ],
              [
                -352540.22449650546,
                2218941.0219233097,
                0.967715863606778
              ],
              [
                -352036.7444965055,
                2218941.0219233097,
                4.087715863606778
              ],
              [
                -352036.7444965055,
                2218438.76192331,
                4.087715863606778
              ],
              [
                -352540.22449650546,
                2218438.76192331,
                0.967715863606778
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:19:14+00:00",
        "end_time": "2019-08-05T20:16:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00072.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00072.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00072.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00072.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0012423,
            69.72383365,
            0.9677158636,
            -162.9868189,
            69.72898294,
            4.087715864
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.99951507596467,
                  69.72383365095155,
                  0.967715863606778
                ],
                [
                  -163.00124226772618,
                  69.72836403906443,
                  0.967715863606778
                ],
                [
                  -162.9885436811424,
                  69.72898294157156,
                  4.087715863606778
                ],
                [
                  -162.98681886619795,
                  69.72445242141849,
                  4.087715863606778
                ],
                [
                  -162.99951507596467,
                  69.72383365095155,
                  0.967715863606778
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00072.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00072.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:19:14Z",
            "pc:count": 4438547,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352278.4197,
                "count": 4438547,
                "maximum": -352036.7445,
                "minimum": -352540.2245,
                "name": "X",
                "position": 0,
                "stddev": 127.3886735,
                "variance": 16227.87414
              },
              {
                "average": 2218709.749,
                "count": 4438547,
                "maximum": 2218941.022,
                "minimum": 2218438.762,
                "name": "Y",
                "position": 1,
                "stddev": 126.7674254,
                "variance": 16069.98016
              },
              {
                "average": 2.391964743,
                "count": 4438547,
                "maximum": 4.087715864,
                "minimum": 0.9677158636,
                "name": "Z",
                "position": 2,
                "stddev": 0.9644788308,
                "variance": 0.930219415
              },
              {
                "average": 33048.71277,
                "count": 4438547,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 19539.52559,
                "variance": 381793060.2
              },
              {
                "average": 1.000002478,
                "count": 4438547,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001574256307,
                "variance": 2.478282919e-06
              },
              {
                "average": 1.000004957,
                "count": 4438547,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002226331861,
                "variance": 4.956553555e-06
              },
              {
                "average": 0.4923998777,
                "count": 4438547,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999422911,
                "variance": 0.2499422945
              },
              {
                "average": 0.0003525928643,
                "count": 4438547,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0187741477,
                "variance": 0.000352468622
              },
              {
                "average": 3.536971446,
                "count": 4438547,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.586020327,
                "variance": 12.85954179
              },
              {
                "average": 3.311114948,
                "count": 4438547,
                "maximum": 21.51600075,
                "minimum": -16.09799957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.941430536,
                "variance": 98.8320411
              },
              {
                "average": 0.4981380168,
                "count": 4438547,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999965893,
                "variance": 0.2499965893
              },
              {
                "average": 274.1790259,
                "count": 4438547,
                "maximum": 307,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 23.07427584,
                "variance": 532.4222055
              },
              {
                "average": 249073809.4,
                "count": 4438547,
                "maximum": 249075154.6,
                "minimum": 249071361.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1479.705896,
                "variance": 2189529.537
              },
              {
                "average": 0.4981380168,
                "count": 4438547,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999965893,
                "variance": 0.2499965893
              },
              {
                "average": 0,
                "count": 4438547,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4438547,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4438547,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1535534039,
                "count": 4438547,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3605201594,
                "variance": 0.1299747853
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352540.2245,
              2218438.762,
              0.9677158636,
              -352036.7445,
              2218941.022,
              4.087715864
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352540.22449650546,
                    2218438.76192331,
                    0.967715863606778
                  ],
                  [
                    -352540.22449650546,
                    2218941.0219233097,
                    0.967715863606778
                  ],
                  [
                    -352036.7444965055,
                    2218941.0219233097,
                    4.087715863606778
                  ],
                  [
                    -352036.7444965055,
                    2218438.76192331,
                    4.087715863606778
                  ],
                  [
                    -352540.22449650546,
                    2218438.76192331,
                    0.967715863606778
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:19:14+00:00",
            "end_time": "2019-08-05T20:16:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00138.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00056024392623,
              69.74021308452888,
              3.551319826251592
            ],
            [
              -163.00228868939837,
              69.74474347346056,
              3.551319826251592
            ],
            [
              -162.98931029310114,
              69.74537569329017,
              13.131319826251591
            ],
            [
              -162.98758427828778,
              69.74084516935756,
              13.131319826251591
            ],
            [
              -163.00056024392623,
              69.74021308452888,
              3.551319826251592
            ]
          ]
        ]
      },
      "bbox": [
        -163.0022887,
        69.74021308,
        3.551319826,
        -162.9875843,
        69.74537569,
        13.13131983
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:40Z",
        "pc:count": 5132075,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352070.1858,
            "count": 5132075,
            "maximum": -351823.6004,
            "minimum": -352337.8204,
            "name": "X",
            "position": 0,
            "stddev": 128.9468731,
            "variance": 16627.29609
          },
          {
            "average": 2220479.201,
            "count": 5132075,
            "maximum": 2220729.228,
            "minimum": 2220227.008,
            "name": "Y",
            "position": 1,
            "stddev": 129.5540311,
            "variance": 16784.24696
          },
          {
            "average": 4.219296594,
            "count": 5132075,
            "maximum": 13.13131983,
            "minimum": 3.551319826,
            "name": "Z",
            "position": 2,
            "stddev": 0.1960939627,
            "variance": 0.03845284223
          },
          {
            "average": 35082.62495,
            "count": 5132075,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13065.77323,
            "variance": 170714430
          },
          {
            "average": 1.001246474,
            "count": 5132075,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03528895903,
            "variance": 0.001245310629
          },
          {
            "average": 1.002484765,
            "count": 5132075,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04979719348,
            "variance": 0.002479760478
          },
          {
            "average": 0.487166497,
            "count": 5132075,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998353228,
            "variance": 0.2498353499
          },
          {
            "average": 0.0003407978254,
            "count": 5132075,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01845756616,
            "variance": 0.0003406817487
          },
          {
            "average": 1.198016397,
            "count": 5132075,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4103843379,
            "variance": 0.1684153048
          },
          {
            "average": 4.829792238,
            "count": 5132075,
            "maximum": 21.58200073,
            "minimum": -16.00799942,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.34137041,
            "variance": 106.943942
          },
          {
            "average": 0.4908178466,
            "count": 5132075,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999157297,
            "variance": 0.2499157368
          },
          {
            "average": 267.2902545,
            "count": 5132075,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.11044007,
            "variance": 365.2089195
          },
          {
            "average": 249074134.9,
            "count": 5132075,
            "maximum": 249075480.2,
            "minimum": 249071334,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1542.326972,
            "variance": 2378772.489
          },
          {
            "average": 0.4908178466,
            "count": 5132075,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999157297,
            "variance": 0.2499157368
          },
          {
            "average": 0,
            "count": 5132075,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5132075,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5132075,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1980543932,
            "count": 5132075,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3985334133,
            "variance": 0.1588288815
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352337.8204,
          2220227.008,
          3.551319826,
          -351823.6004,
          2220729.228,
          13.13131983
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352337.8203807119,
                2220227.0084023005,
                3.551319826251592
              ],
              [
                -352337.8203807119,
                2220729.2284023003,
                3.551319826251592
              ],
              [
                -351823.60038071196,
                2220729.2284023003,
                13.131319826251591
              ],
              [
                -351823.60038071196,
                2220227.0084023005,
                13.131319826251591
              ],
              [
                -352337.8203807119,
                2220227.0084023005,
                3.551319826251592
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:40+00:00",
        "end_time": "2019-08-05T20:15:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00138.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00138.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00138.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00138.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0022887,
            69.74021308,
            3.551319826,
            -162.9875843,
            69.74537569,
            13.13131983
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00056024392623,
                  69.74021308452888,
                  3.551319826251592
                ],
                [
                  -163.00228868939837,
                  69.74474347346056,
                  3.551319826251592
                ],
                [
                  -162.98931029310114,
                  69.74537569329017,
                  13.131319826251591
                ],
                [
                  -162.98758427828778,
                  69.74084516935756,
                  13.131319826251591
                ],
                [
                  -163.00056024392623,
                  69.74021308452888,
                  3.551319826251592
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00138.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00138.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:40Z",
            "pc:count": 5132075,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352070.1858,
                "count": 5132075,
                "maximum": -351823.6004,
                "minimum": -352337.8204,
                "name": "X",
                "position": 0,
                "stddev": 128.9468731,
                "variance": 16627.29609
              },
              {
                "average": 2220479.201,
                "count": 5132075,
                "maximum": 2220729.228,
                "minimum": 2220227.008,
                "name": "Y",
                "position": 1,
                "stddev": 129.5540311,
                "variance": 16784.24696
              },
              {
                "average": 4.219296594,
                "count": 5132075,
                "maximum": 13.13131983,
                "minimum": 3.551319826,
                "name": "Z",
                "position": 2,
                "stddev": 0.1960939627,
                "variance": 0.03845284223
              },
              {
                "average": 35082.62495,
                "count": 5132075,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13065.77323,
                "variance": 170714430
              },
              {
                "average": 1.001246474,
                "count": 5132075,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03528895903,
                "variance": 0.001245310629
              },
              {
                "average": 1.002484765,
                "count": 5132075,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04979719348,
                "variance": 0.002479760478
              },
              {
                "average": 0.487166497,
                "count": 5132075,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998353228,
                "variance": 0.2498353499
              },
              {
                "average": 0.0003407978254,
                "count": 5132075,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01845756616,
                "variance": 0.0003406817487
              },
              {
                "average": 1.198016397,
                "count": 5132075,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4103843379,
                "variance": 0.1684153048
              },
              {
                "average": 4.829792238,
                "count": 5132075,
                "maximum": 21.58200073,
                "minimum": -16.00799942,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.34137041,
                "variance": 106.943942
              },
              {
                "average": 0.4908178466,
                "count": 5132075,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999157297,
                "variance": 0.2499157368
              },
              {
                "average": 267.2902545,
                "count": 5132075,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.11044007,
                "variance": 365.2089195
              },
              {
                "average": 249074134.9,
                "count": 5132075,
                "maximum": 249075480.2,
                "minimum": 249071334,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1542.326972,
                "variance": 2378772.489
              },
              {
                "average": 0.4908178466,
                "count": 5132075,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999157297,
                "variance": 0.2499157368
              },
              {
                "average": 0,
                "count": 5132075,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5132075,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5132075,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1980543932,
                "count": 5132075,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3985334133,
                "variance": 0.1588288815
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352337.8204,
              2220227.008,
              3.551319826,
              -351823.6004,
              2220729.228,
              13.13131983
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352337.8203807119,
                    2220227.0084023005,
                    3.551319826251592
                  ],
                  [
                    -352337.8203807119,
                    2220729.2284023003,
                    3.551319826251592
                  ],
                  [
                    -351823.60038071196,
                    2220729.2284023003,
                    13.131319826251591
                  ],
                  [
                    -351823.60038071196,
                    2220227.0084023005,
                    13.131319826251591
                  ],
                  [
                    -352337.8203807119,
                    2220227.0084023005,
                    3.551319826251592
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:40+00:00",
            "end_time": "2019-08-05T20:15:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00073.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98797052477698,
              69.72388706256736,
              1.073374149538216
            ],
            [
              -162.98969558704428,
              69.72841773962823,
              1.073374149538216
            ],
            [
              -162.97672426335464,
              69.72904910212873,
              3.833374149538217
            ],
            [
              -162.97500162923473,
              69.72451829036032,
              3.833374149538217
            ],
            [
              -162.98797052477698,
              69.72388706256736,
              1.073374149538216
            ]
          ]
        ]
      },
      "bbox": [
        -162.9896956,
        69.72388706,
        1.07337415,
        -162.9750016,
        69.7290491,
        3.83337415
      ],
      "properties": {
        "datetime": "2019-08-05T21:21:11Z",
        "pc:count": 4149198,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351849.3233,
            "count": 4149198,
            "maximum": -351575.6816,
            "minimum": -352089.9616,
            "name": "X",
            "position": 0,
            "stddev": 129.9131515,
            "variance": 16877.42692
          },
          {
            "average": 2218631.844,
            "count": 4149198,
            "maximum": 2218885.611,
            "minimum": 2218383.331,
            "name": "Y",
            "position": 1,
            "stddev": 130.5147281,
            "variance": 17034.09424
          },
          {
            "average": 2.452250597,
            "count": 4149198,
            "maximum": 3.83337415,
            "minimum": 1.07337415,
            "name": "Z",
            "position": 2,
            "stddev": 0.5791413116,
            "variance": 0.3354046588
          },
          {
            "average": 36896.50547,
            "count": 4149198,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 18602.02243,
            "variance": 346035238.6
          },
          {
            "average": 1,
            "count": 4149198,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4149198,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4981907347,
            "count": 4149198,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999967868,
            "variance": 0.2499967868
          },
          {
            "average": 0.0003176517486,
            "count": 4149198,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01781995854,
            "variance": 0.0003175509225
          },
          {
            "average": 3.416093905,
            "count": 4149198,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.541420487,
            "variance": 12.54165907
          },
          {
            "average": 2.161416684,
            "count": 4149198,
            "maximum": 21.54599953,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.25363374,
            "variance": 85.62973739
          },
          {
            "average": 0.5146074012,
            "count": 4149198,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997866385,
            "variance": 0.249786684
          },
          {
            "average": 275.4207507,
            "count": 4149198,
            "maximum": 307,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.67874553,
            "variance": 514.3254988
          },
          {
            "average": 249073921,
            "count": 4149198,
            "maximum": 249075271.7,
            "minimum": 249071361.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1549.57659,
            "variance": 2401187.609
          },
          {
            "average": 0.5146074012,
            "count": 4149198,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997866385,
            "variance": 0.249786684
          },
          {
            "average": 0,
            "count": 4149198,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4149198,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4149198,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1585846229,
            "count": 4149198,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3652883415,
            "variance": 0.1334355724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352089.9616,
          2218383.331,
          1.07337415,
          -351575.6816,
          2218885.611,
          3.83337415
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352089.9616091538,
                2218383.33081543,
                1.073374149538216
              ],
              [
                -352089.9616091538,
                2218885.61081543,
                1.073374149538216
              ],
              [
                -351575.68160915375,
                2218885.61081543,
                3.833374149538217
              ],
              [
                -351575.68160915375,
                2218383.33081543,
                3.833374149538217
              ],
              [
                -352089.9616091538,
                2218383.33081543,
                1.073374149538216
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:21:11+00:00",
        "end_time": "2019-08-05T20:16:01+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00073.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00073.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00073.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00073.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9896956,
            69.72388706,
            1.07337415,
            -162.9750016,
            69.7290491,
            3.83337415
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98797052477698,
                  69.72388706256736,
                  1.073374149538216
                ],
                [
                  -162.98969558704428,
                  69.72841773962823,
                  1.073374149538216
                ],
                [
                  -162.97672426335464,
                  69.72904910212873,
                  3.833374149538217
                ],
                [
                  -162.97500162923473,
                  69.72451829036032,
                  3.833374149538217
                ],
                [
                  -162.98797052477698,
                  69.72388706256736,
                  1.073374149538216
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00073.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00073.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:21:11Z",
            "pc:count": 4149198,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351849.3233,
                "count": 4149198,
                "maximum": -351575.6816,
                "minimum": -352089.9616,
                "name": "X",
                "position": 0,
                "stddev": 129.9131515,
                "variance": 16877.42692
              },
              {
                "average": 2218631.844,
                "count": 4149198,
                "maximum": 2218885.611,
                "minimum": 2218383.331,
                "name": "Y",
                "position": 1,
                "stddev": 130.5147281,
                "variance": 17034.09424
              },
              {
                "average": 2.452250597,
                "count": 4149198,
                "maximum": 3.83337415,
                "minimum": 1.07337415,
                "name": "Z",
                "position": 2,
                "stddev": 0.5791413116,
                "variance": 0.3354046588
              },
              {
                "average": 36896.50547,
                "count": 4149198,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 18602.02243,
                "variance": 346035238.6
              },
              {
                "average": 1,
                "count": 4149198,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4149198,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4981907347,
                "count": 4149198,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999967868,
                "variance": 0.2499967868
              },
              {
                "average": 0.0003176517486,
                "count": 4149198,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01781995854,
                "variance": 0.0003175509225
              },
              {
                "average": 3.416093905,
                "count": 4149198,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.541420487,
                "variance": 12.54165907
              },
              {
                "average": 2.161416684,
                "count": 4149198,
                "maximum": 21.54599953,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.25363374,
                "variance": 85.62973739
              },
              {
                "average": 0.5146074012,
                "count": 4149198,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997866385,
                "variance": 0.249786684
              },
              {
                "average": 275.4207507,
                "count": 4149198,
                "maximum": 307,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.67874553,
                "variance": 514.3254988
              },
              {
                "average": 249073921,
                "count": 4149198,
                "maximum": 249075271.7,
                "minimum": 249071361.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1549.57659,
                "variance": 2401187.609
              },
              {
                "average": 0.5146074012,
                "count": 4149198,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997866385,
                "variance": 0.249786684
              },
              {
                "average": 0,
                "count": 4149198,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4149198,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4149198,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1585846229,
                "count": 4149198,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3652883415,
                "variance": 0.1334355724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352089.9616,
              2218383.331,
              1.07337415,
              -351575.6816,
              2218885.611,
              3.83337415
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352089.9616091538,
                    2218383.33081543,
                    1.073374149538216
                  ],
                  [
                    -352089.9616091538,
                    2218885.61081543,
                    1.073374149538216
                  ],
                  [
                    -351575.68160915375,
                    2218885.61081543,
                    3.833374149538217
                  ],
                  [
                    -351575.68160915375,
                    2218383.33081543,
                    3.833374149538217
                  ],
                  [
                    -352089.9616091538,
                    2218383.33081543,
                    1.073374149538216
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:21:11+00:00",
            "end_time": "2019-08-05T20:16:01+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00137.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0123831945456,
              69.74014492855456,
              -0.582740519579751
            ],
            [
              -163.01411423622022,
              69.74467610792158,
              -0.582740519579751
            ],
            [
              -163.00113821082837,
              69.74530905512846,
              63.23725948042025
            ],
            [
              -162.99940959966392,
              69.74077774058213,
              63.23725948042025
            ],
            [
              -163.0123831945456,
              69.74014492855456,
              -0.582740519579751
            ]
          ]
        ]
      },
      "bbox": [
        -163.0141142,
        69.74014493,
        -0.5827405196,
        -162.9994096,
        69.74530906,
        63.23725948
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:50Z",
        "pc:count": 5692794,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352551.5739,
            "count": 5692794,
            "maximum": -352284.6742,
            "minimum": -352798.8142,
            "name": "X",
            "position": 0,
            "stddev": 134.8621214,
            "variance": 18187.79178
          },
          {
            "average": 2220532.744,
            "count": 5692794,
            "maximum": 2220784.677,
            "minimum": 2220282.357,
            "name": "Y",
            "position": 1,
            "stddev": 130.3802632,
            "variance": 16999.01303
          },
          {
            "average": 7.023013864,
            "count": 5692794,
            "maximum": 63.23725948,
            "minimum": -0.5827405196,
            "name": "Z",
            "position": 2,
            "stddev": 3.365587863,
            "variance": 11.32718166
          },
          {
            "average": 35876.32752,
            "count": 5692794,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15471.88686,
            "variance": 239379282.9
          },
          {
            "average": 1.019549978,
            "count": 5692794,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1419361086,
            "variance": 0.02014585893
          },
          {
            "average": 1.03919376,
            "count": 5692794,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.201507325,
            "variance": 0.04060520204
          },
          {
            "average": 0.4978546563,
            "count": 5692794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999954414,
            "variance": 0.2499954414
          },
          {
            "average": 0.0003002040826,
            "count": 5692794,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01732379903,
            "variance": 0.0003001140128
          },
          {
            "average": 1.494077249,
            "count": 5692794,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.177332736,
            "variance": 1.386112371
          },
          {
            "average": 3.532910053,
            "count": 5692794,
            "maximum": 16.37999916,
            "minimum": -15.55799961,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.5235472,
            "variance": 90.69795126
          },
          {
            "average": 0.5206259,
            "count": 5692794,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499574435,
            "variance": 0.2495746161
          },
          {
            "average": 260.5157093,
            "count": 5692794,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.28140079,
            "variance": 203.9584084
          },
          {
            "average": 249074464.5,
            "count": 5692794,
            "maximum": 249075490.9,
            "minimum": 249071333.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1192.708015,
            "variance": 1422552.408
          },
          {
            "average": 0.5206259,
            "count": 5692794,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499574435,
            "variance": 0.2495746161
          },
          {
            "average": 0,
            "count": 5692794,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5692794,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5692794,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1918283008,
            "count": 5692794,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3937387853,
            "variance": 0.1550302311
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352798.8142,
          2220282.357,
          -0.5827405196,
          -352284.6742,
          2220784.677,
          63.23725948
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352798.81415086513,
                2220282.357489668,
                -0.582740519579751
              ],
              [
                -352798.81415086513,
                2220784.677489668,
                -0.582740519579751
              ],
              [
                -352284.6741508651,
                2220784.677489668,
                63.23725948042025
              ],
              [
                -352284.6741508651,
                2220282.357489668,
                63.23725948042025
              ],
              [
                -352798.81415086513,
                2220282.357489668,
                -0.582740519579751
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:50+00:00",
        "end_time": "2019-08-05T20:15:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00137.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00137.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00137.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00137.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0141142,
            69.74014493,
            -0.5827405196,
            -162.9994096,
            69.74530906,
            63.23725948
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0123831945456,
                  69.74014492855456,
                  -0.582740519579751
                ],
                [
                  -163.01411423622022,
                  69.74467610792158,
                  -0.582740519579751
                ],
                [
                  -163.00113821082837,
                  69.74530905512846,
                  63.23725948042025
                ],
                [
                  -162.99940959966392,
                  69.74077774058213,
                  63.23725948042025
                ],
                [
                  -163.0123831945456,
                  69.74014492855456,
                  -0.582740519579751
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00137.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00137.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:50Z",
            "pc:count": 5692794,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352551.5739,
                "count": 5692794,
                "maximum": -352284.6742,
                "minimum": -352798.8142,
                "name": "X",
                "position": 0,
                "stddev": 134.8621214,
                "variance": 18187.79178
              },
              {
                "average": 2220532.744,
                "count": 5692794,
                "maximum": 2220784.677,
                "minimum": 2220282.357,
                "name": "Y",
                "position": 1,
                "stddev": 130.3802632,
                "variance": 16999.01303
              },
              {
                "average": 7.023013864,
                "count": 5692794,
                "maximum": 63.23725948,
                "minimum": -0.5827405196,
                "name": "Z",
                "position": 2,
                "stddev": 3.365587863,
                "variance": 11.32718166
              },
              {
                "average": 35876.32752,
                "count": 5692794,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15471.88686,
                "variance": 239379282.9
              },
              {
                "average": 1.019549978,
                "count": 5692794,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1419361086,
                "variance": 0.02014585893
              },
              {
                "average": 1.03919376,
                "count": 5692794,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.201507325,
                "variance": 0.04060520204
              },
              {
                "average": 0.4978546563,
                "count": 5692794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999954414,
                "variance": 0.2499954414
              },
              {
                "average": 0.0003002040826,
                "count": 5692794,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01732379903,
                "variance": 0.0003001140128
              },
              {
                "average": 1.494077249,
                "count": 5692794,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.177332736,
                "variance": 1.386112371
              },
              {
                "average": 3.532910053,
                "count": 5692794,
                "maximum": 16.37999916,
                "minimum": -15.55799961,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.5235472,
                "variance": 90.69795126
              },
              {
                "average": 0.5206259,
                "count": 5692794,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499574435,
                "variance": 0.2495746161
              },
              {
                "average": 260.5157093,
                "count": 5692794,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.28140079,
                "variance": 203.9584084
              },
              {
                "average": 249074464.5,
                "count": 5692794,
                "maximum": 249075490.9,
                "minimum": 249071333.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1192.708015,
                "variance": 1422552.408
              },
              {
                "average": 0.5206259,
                "count": 5692794,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499574435,
                "variance": 0.2495746161
              },
              {
                "average": 0,
                "count": 5692794,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5692794,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5692794,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1918283008,
                "count": 5692794,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3937387853,
                "variance": 0.1550302311
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352798.8142,
              2220282.357,
              -0.5827405196,
              -352284.6742,
              2220784.677,
              63.23725948
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352798.81415086513,
                    2220282.357489668,
                    -0.582740519579751
                  ],
                  [
                    -352798.81415086513,
                    2220784.677489668,
                    -0.582740519579751
                  ],
                  [
                    -352284.6741508651,
                    2220784.677489668,
                    63.23725948042025
                  ],
                  [
                    -352284.6741508651,
                    2220282.357489668,
                    63.23725948042025
                  ],
                  [
                    -352798.81415086513,
                    2220282.357489668,
                    -0.582740519579751
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:50+00:00",
            "end_time": "2019-08-05T20:15:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00084.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.033042080868,
              69.72783038207236,
              1.115531216852693
            ],
            [
              -163.0347013791233,
              69.732165723842,
              1.115531216852693
            ],
            [
              -163.0241260386685,
              69.73268307440001,
              9.515531216852693
            ],
            [
              -163.0224686345936,
              69.72834762698557,
              9.515531216852693
            ],
            [
              -163.033042080868,
              69.72783038207236,
              1.115531216852693
            ]
          ]
        ]
      },
      "bbox": [
        -163.0347014,
        69.72783038,
        1.115531217,
        -163.0224686,
        69.73268307,
        9.515531217
      ],
      "properties": {
        "datetime": "2019-08-05T21:09:33Z",
        "pc:count": 2927605,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353559.9251,
            "count": 2927605,
            "maximum": -353366.6998,
            "minimum": -353785.9598,
            "name": "X",
            "position": 0,
            "stddev": 105.1036724,
            "variance": 11046.78195
          },
          {
            "average": 2219294.778,
            "count": 2927605,
            "maximum": 2219532.707,
            "minimum": 2219052.047,
            "name": "Y",
            "position": 1,
            "stddev": 125.3449579,
            "variance": 15711.35846
          },
          {
            "average": 4.36989601,
            "count": 2927605,
            "maximum": 9.515531217,
            "minimum": 1.115531217,
            "name": "Z",
            "position": 2,
            "stddev": 2.811716647,
            "variance": 7.905750501
          },
          {
            "average": 33097.1712,
            "count": 2927605,
            "maximum": 65535,
            "minimum": 1188,
            "name": "Intensity",
            "position": 3,
            "stddev": 18668.71165,
            "variance": 348520794.8
          },
          {
            "average": 1.000003074,
            "count": 2927605,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001753333058,
            "variance": 3.074176812e-06
          },
          {
            "average": 1.000006148,
            "count": 2927605,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002479583579,
            "variance": 6.148334723e-06
          },
          {
            "average": 0.5287075955,
            "count": 2927605,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4991752789,
            "variance": 0.2491759591
          },
          {
            "average": 0.00015200138,
            "count": 2927605,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01232794904,
            "variance": 0.0001519783275
          },
          {
            "average": 3.360714304,
            "count": 2927605,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.47158847,
            "variance": 12.0519265
          },
          {
            "average": -4.998716501,
            "count": 2927605,
            "maximum": 16.41600037,
            "minimum": -15.81599998,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.502403198,
            "variance": 42.28124735
          },
          {
            "average": 0.5394621201,
            "count": 2927605,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4984403936,
            "variance": 0.2484428259
          },
          {
            "average": 251.661481,
            "count": 2927605,
            "maximum": 254,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.25488966,
            "variance": 1.574748059
          },
          {
            "average": 249074193.7,
            "count": 2927605,
            "maximum": 249074573.4,
            "minimum": 249073883,
            "name": "GpsTime",
            "position": 12,
            "stddev": 225.4632618,
            "variance": 50833.68242
          },
          {
            "average": 0.5394621201,
            "count": 2927605,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4984403936,
            "variance": 0.2484428259
          },
          {
            "average": 0,
            "count": 2927605,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2927605,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2927605,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.07603313972,
            "count": 2927605,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.265051175,
            "variance": 0.07025212538
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353785.9598,
          2219052.047,
          1.115531217,
          -353366.6998,
          2219532.707,
          9.515531217
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353785.95977212384,
                2219052.0470162905,
                1.115531216852693
              ],
              [
                -353785.95977212384,
                2219532.7070162906,
                1.115531216852693
              ],
              [
                -353366.69977212383,
                2219532.7070162906,
                9.515531216852693
              ],
              [
                -353366.69977212383,
                2219052.0470162905,
                9.515531216852693
              ],
              [
                -353785.95977212384,
                2219052.0470162905,
                1.115531216852693
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:09:33+00:00",
        "end_time": "2019-08-05T20:58:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00084.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00084.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00084.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00084.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0347014,
            69.72783038,
            1.115531217,
            -163.0224686,
            69.73268307,
            9.515531217
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.033042080868,
                  69.72783038207236,
                  1.115531216852693
                ],
                [
                  -163.0347013791233,
                  69.732165723842,
                  1.115531216852693
                ],
                [
                  -163.0241260386685,
                  69.73268307440001,
                  9.515531216852693
                ],
                [
                  -163.0224686345936,
                  69.72834762698557,
                  9.515531216852693
                ],
                [
                  -163.033042080868,
                  69.72783038207236,
                  1.115531216852693
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00084.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00084.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:09:33Z",
            "pc:count": 2927605,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353559.9251,
                "count": 2927605,
                "maximum": -353366.6998,
                "minimum": -353785.9598,
                "name": "X",
                "position": 0,
                "stddev": 105.1036724,
                "variance": 11046.78195
              },
              {
                "average": 2219294.778,
                "count": 2927605,
                "maximum": 2219532.707,
                "minimum": 2219052.047,
                "name": "Y",
                "position": 1,
                "stddev": 125.3449579,
                "variance": 15711.35846
              },
              {
                "average": 4.36989601,
                "count": 2927605,
                "maximum": 9.515531217,
                "minimum": 1.115531217,
                "name": "Z",
                "position": 2,
                "stddev": 2.811716647,
                "variance": 7.905750501
              },
              {
                "average": 33097.1712,
                "count": 2927605,
                "maximum": 65535,
                "minimum": 1188,
                "name": "Intensity",
                "position": 3,
                "stddev": 18668.71165,
                "variance": 348520794.8
              },
              {
                "average": 1.000003074,
                "count": 2927605,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001753333058,
                "variance": 3.074176812e-06
              },
              {
                "average": 1.000006148,
                "count": 2927605,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002479583579,
                "variance": 6.148334723e-06
              },
              {
                "average": 0.5287075955,
                "count": 2927605,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4991752789,
                "variance": 0.2491759591
              },
              {
                "average": 0.00015200138,
                "count": 2927605,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01232794904,
                "variance": 0.0001519783275
              },
              {
                "average": 3.360714304,
                "count": 2927605,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.47158847,
                "variance": 12.0519265
              },
              {
                "average": -4.998716501,
                "count": 2927605,
                "maximum": 16.41600037,
                "minimum": -15.81599998,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.502403198,
                "variance": 42.28124735
              },
              {
                "average": 0.5394621201,
                "count": 2927605,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4984403936,
                "variance": 0.2484428259
              },
              {
                "average": 251.661481,
                "count": 2927605,
                "maximum": 254,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.25488966,
                "variance": 1.574748059
              },
              {
                "average": 249074193.7,
                "count": 2927605,
                "maximum": 249074573.4,
                "minimum": 249073883,
                "name": "GpsTime",
                "position": 12,
                "stddev": 225.4632618,
                "variance": 50833.68242
              },
              {
                "average": 0.5394621201,
                "count": 2927605,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4984403936,
                "variance": 0.2484428259
              },
              {
                "average": 0,
                "count": 2927605,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2927605,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2927605,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.07603313972,
                "count": 2927605,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.265051175,
                "variance": 0.07025212538
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353785.9598,
              2219052.047,
              1.115531217,
              -353366.6998,
              2219532.707,
              9.515531217
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353785.95977212384,
                    2219052.0470162905,
                    1.115531216852693
                  ],
                  [
                    -353785.95977212384,
                    2219532.7070162906,
                    1.115531216852693
                  ],
                  [
                    -353366.69977212383,
                    2219532.7070162906,
                    9.515531216852693
                  ],
                  [
                    -353366.69977212383,
                    2219052.0470162905,
                    9.515531216852693
                  ],
                  [
                    -353785.95977212384,
                    2219052.0470162905,
                    1.115531216852693
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:09:33+00:00",
            "end_time": "2019-08-05T20:58:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00187.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00114270503795,
              69.75250641330967,
              1.177161190008789
            ],
            [
              -163.00287208846498,
              69.75703689590748,
              1.177161190008789
            ],
            [
              -162.98988647766254,
              69.7576692198567,
              29.33716119000879
            ],
            [
              -162.9881595273996,
              69.75313860214322,
              29.33716119000879
            ],
            [
              -163.00114270503795,
              69.75250641330967,
              1.177161190008789
            ]
          ]
        ]
      },
      "bbox": [
        -163.0028721,
        69.75250641,
        1.17716119,
        -162.9881595,
        69.75766922,
        29.33716119
      ],
      "properties": {
        "datetime": "2019-08-05T21:18:17Z",
        "pc:count": 4091843,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351917.6642,
            "count": 4091843,
            "maximum": -351663.7914,
            "minimum": -352178.0314,
            "name": "X",
            "position": 0,
            "stddev": 133.3653121,
            "variance": 17786.30648
          },
          {
            "average": 2221815.225,
            "count": 4091843,
            "maximum": 2222070.177,
            "minimum": 2221567.977,
            "name": "Y",
            "position": 1,
            "stddev": 130.7312194,
            "variance": 17090.65171
          },
          {
            "average": 3.271163406,
            "count": 4091843,
            "maximum": 29.33716119,
            "minimum": 1.17716119,
            "name": "Z",
            "position": 2,
            "stddev": 1.542898613,
            "variance": 2.380536129
          },
          {
            "average": 44479.73509,
            "count": 4091843,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 15581.14773,
            "variance": 242772164.7
          },
          {
            "average": 1.00000391,
            "count": 4091843,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001977423606,
            "variance": 3.910204117e-06
          },
          {
            "average": 1.00000782,
            "count": 4091843,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002796493815,
            "variance": 7.820377655e-06
          },
          {
            "average": 0.4685387489,
            "count": 4091843,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499009269,
            "variance": 0.2490102505
          },
          {
            "average": 0.0003878447927,
            "count": 4091843,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01968995845,
            "variance": 0.0003876944638
          },
          {
            "average": 2.133700633,
            "count": 4091843,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.590992626,
            "variance": 6.713242787
          },
          {
            "average": 4.436154243,
            "count": 4091843,
            "maximum": 21.55800056,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.78825002,
            "variance": 116.3863384
          },
          {
            "average": 0.4893821684,
            "count": 4091843,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.49988731,
            "variance": 0.2498873227
          },
          {
            "average": 268.4023869,
            "count": 4091843,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 20.14533359,
            "variance": 405.8344654
          },
          {
            "average": 249073929.7,
            "count": 4091843,
            "maximum": 249075097.3,
            "minimum": 249071314,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1556.370189,
            "variance": 2422288.165
          },
          {
            "average": 0.4893821684,
            "count": 4091843,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.49988731,
            "variance": 0.2498873227
          },
          {
            "average": 0,
            "count": 4091843,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4091843,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4091843,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2196435689,
            "count": 4091843,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4140052094,
            "variance": 0.1714003134
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352178.0314,
          2221567.977,
          1.17716119,
          -351663.7914,
          2222070.177,
          29.33716119
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352178.0313620494,
                2221567.9771853955,
                1.177161190008789
              ],
              [
                -352178.0313620494,
                2222070.1771853957,
                1.177161190008789
              ],
              [
                -351663.7913620494,
                2222070.1771853957,
                29.33716119000879
              ],
              [
                -351663.7913620494,
                2221567.9771853955,
                29.33716119000879
              ],
              [
                -352178.0313620494,
                2221567.9771853955,
                1.177161190008789
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:18:17+00:00",
        "end_time": "2019-08-05T20:15:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00187.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00187.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00187.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00187.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0028721,
            69.75250641,
            1.17716119,
            -162.9881595,
            69.75766922,
            29.33716119
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00114270503795,
                  69.75250641330967,
                  1.177161190008789
                ],
                [
                  -163.00287208846498,
                  69.75703689590748,
                  1.177161190008789
                ],
                [
                  -162.98988647766254,
                  69.7576692198567,
                  29.33716119000879
                ],
                [
                  -162.9881595273996,
                  69.75313860214322,
                  29.33716119000879
                ],
                [
                  -163.00114270503795,
                  69.75250641330967,
                  1.177161190008789
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00187.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00187.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:18:17Z",
            "pc:count": 4091843,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351917.6642,
                "count": 4091843,
                "maximum": -351663.7914,
                "minimum": -352178.0314,
                "name": "X",
                "position": 0,
                "stddev": 133.3653121,
                "variance": 17786.30648
              },
              {
                "average": 2221815.225,
                "count": 4091843,
                "maximum": 2222070.177,
                "minimum": 2221567.977,
                "name": "Y",
                "position": 1,
                "stddev": 130.7312194,
                "variance": 17090.65171
              },
              {
                "average": 3.271163406,
                "count": 4091843,
                "maximum": 29.33716119,
                "minimum": 1.17716119,
                "name": "Z",
                "position": 2,
                "stddev": 1.542898613,
                "variance": 2.380536129
              },
              {
                "average": 44479.73509,
                "count": 4091843,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 15581.14773,
                "variance": 242772164.7
              },
              {
                "average": 1.00000391,
                "count": 4091843,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001977423606,
                "variance": 3.910204117e-06
              },
              {
                "average": 1.00000782,
                "count": 4091843,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002796493815,
                "variance": 7.820377655e-06
              },
              {
                "average": 0.4685387489,
                "count": 4091843,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499009269,
                "variance": 0.2490102505
              },
              {
                "average": 0.0003878447927,
                "count": 4091843,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01968995845,
                "variance": 0.0003876944638
              },
              {
                "average": 2.133700633,
                "count": 4091843,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.590992626,
                "variance": 6.713242787
              },
              {
                "average": 4.436154243,
                "count": 4091843,
                "maximum": 21.55800056,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.78825002,
                "variance": 116.3863384
              },
              {
                "average": 0.4893821684,
                "count": 4091843,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.49988731,
                "variance": 0.2498873227
              },
              {
                "average": 268.4023869,
                "count": 4091843,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 20.14533359,
                "variance": 405.8344654
              },
              {
                "average": 249073929.7,
                "count": 4091843,
                "maximum": 249075097.3,
                "minimum": 249071314,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1556.370189,
                "variance": 2422288.165
              },
              {
                "average": 0.4893821684,
                "count": 4091843,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.49988731,
                "variance": 0.2498873227
              },
              {
                "average": 0,
                "count": 4091843,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4091843,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4091843,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2196435689,
                "count": 4091843,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4140052094,
                "variance": 0.1714003134
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352178.0314,
              2221567.977,
              1.17716119,
              -351663.7914,
              2222070.177,
              29.33716119
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352178.0313620494,
                    2221567.9771853955,
                    1.177161190008789
                  ],
                  [
                    -352178.0313620494,
                    2222070.1771853957,
                    1.177161190008789
                  ],
                  [
                    -351663.7913620494,
                    2222070.1771853957,
                    29.33716119000879
                  ],
                  [
                    -351663.7913620494,
                    2221567.9771853955,
                    29.33716119000879
                  ],
                  [
                    -352178.0313620494,
                    2221567.9771853955,
                    1.177161190008789
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:18:17+00:00",
            "end_time": "2019-08-05T20:15:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00139.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.9887348054673,
              69.7402790208746,
              3.867901985891865
            ],
            [
              -162.99046092995243,
              69.74480934083849,
              3.867901985891865
            ],
            [
              -162.97748319265247,
              69.74544068561543,
              6.847901985891865
            ],
            [
              -162.97575949879385,
              69.74091023083905,
              6.847901985891865
            ],
            [
              -162.9887348054673,
              69.7402790208746,
              3.867901985891865
            ]
          ]
        ]
      },
      "bbox": [
        -162.9904609,
        69.74027902,
        3.867901986,
        -162.9757595,
        69.74544069,
        6.847901986
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:34Z",
        "pc:count": 4634980,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351631.6371,
            "count": 4634980,
            "maximum": -351362.5742,
            "minimum": -351876.7542,
            "name": "X",
            "position": 0,
            "stddev": 129.847242,
            "variance": 16860.30626
          },
          {
            "average": 2220423.503,
            "count": 4634980,
            "maximum": 2220673.687,
            "minimum": 2220171.487,
            "name": "Y",
            "position": 1,
            "stddev": 128.5430351,
            "variance": 16523.31187
          },
          {
            "average": 4.411742233,
            "count": 4634980,
            "maximum": 6.847901986,
            "minimum": 3.867901986,
            "name": "Z",
            "position": 2,
            "stddev": 0.5654048517,
            "variance": 0.3196826463
          },
          {
            "average": 35412.38073,
            "count": 4634980,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 14964.96313,
            "variance": 223950121.6
          },
          {
            "average": 1,
            "count": 4634980,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4634980,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4936215475,
            "count": 4634980,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999593676,
            "variance": 0.2499593693
          },
          {
            "average": 0.0003380812862,
            "count": 4634980,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01838388044,
            "variance": 0.0003379670602
          },
          {
            "average": 1.208945454,
            "count": 4634980,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4073988287,
            "variance": 0.1659738056
          },
          {
            "average": 2.494091987,
            "count": 4634980,
            "maximum": 21.55800056,
            "minimum": -16.09799957,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.628112506,
            "variance": 92.70055043
          },
          {
            "average": 0.506592693,
            "count": 4634980,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999565884,
            "variance": 0.2499565903
          },
          {
            "average": 266.0606605,
            "count": 4634980,
            "maximum": 301,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 17.34803053,
            "variance": 300.9541633
          },
          {
            "average": 249074467.3,
            "count": 4634980,
            "maximum": 249075474.6,
            "minimum": 249071334.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1470.509437,
            "variance": 2162398.004
          },
          {
            "average": 0.506592693,
            "count": 4634980,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999565884,
            "variance": 0.2499565903
          },
          {
            "average": 0,
            "count": 4634980,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4634980,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4634980,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1870113787,
            "count": 4634980,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3899207044,
            "variance": 0.1520381557
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -351876.7542,
          2220171.487,
          3.867901986,
          -351362.5742,
          2220673.687,
          6.847901986
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -351876.7541888848,
                2220171.486805881,
                3.867901985891865
              ],
              [
                -351876.7541888848,
                2220673.686805881,
                3.867901985891865
              ],
              [
                -351362.57418888476,
                2220673.686805881,
                6.847901985891865
              ],
              [
                -351362.57418888476,
                2220171.486805881,
                6.847901985891865
              ],
              [
                -351876.7541888848,
                2220171.486805881,
                3.867901985891865
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:34+00:00",
        "end_time": "2019-08-05T20:15:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00139.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00139.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00139.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00139.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9904609,
            69.74027902,
            3.867901986,
            -162.9757595,
            69.74544069,
            6.847901986
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.9887348054673,
                  69.7402790208746,
                  3.867901985891865
                ],
                [
                  -162.99046092995243,
                  69.74480934083849,
                  3.867901985891865
                ],
                [
                  -162.97748319265247,
                  69.74544068561543,
                  6.847901985891865
                ],
                [
                  -162.97575949879385,
                  69.74091023083905,
                  6.847901985891865
                ],
                [
                  -162.9887348054673,
                  69.7402790208746,
                  3.867901985891865
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00139.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00139.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:34Z",
            "pc:count": 4634980,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351631.6371,
                "count": 4634980,
                "maximum": -351362.5742,
                "minimum": -351876.7542,
                "name": "X",
                "position": 0,
                "stddev": 129.847242,
                "variance": 16860.30626
              },
              {
                "average": 2220423.503,
                "count": 4634980,
                "maximum": 2220673.687,
                "minimum": 2220171.487,
                "name": "Y",
                "position": 1,
                "stddev": 128.5430351,
                "variance": 16523.31187
              },
              {
                "average": 4.411742233,
                "count": 4634980,
                "maximum": 6.847901986,
                "minimum": 3.867901986,
                "name": "Z",
                "position": 2,
                "stddev": 0.5654048517,
                "variance": 0.3196826463
              },
              {
                "average": 35412.38073,
                "count": 4634980,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 14964.96313,
                "variance": 223950121.6
              },
              {
                "average": 1,
                "count": 4634980,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4634980,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4936215475,
                "count": 4634980,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999593676,
                "variance": 0.2499593693
              },
              {
                "average": 0.0003380812862,
                "count": 4634980,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01838388044,
                "variance": 0.0003379670602
              },
              {
                "average": 1.208945454,
                "count": 4634980,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4073988287,
                "variance": 0.1659738056
              },
              {
                "average": 2.494091987,
                "count": 4634980,
                "maximum": 21.55800056,
                "minimum": -16.09799957,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.628112506,
                "variance": 92.70055043
              },
              {
                "average": 0.506592693,
                "count": 4634980,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999565884,
                "variance": 0.2499565903
              },
              {
                "average": 266.0606605,
                "count": 4634980,
                "maximum": 301,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 17.34803053,
                "variance": 300.9541633
              },
              {
                "average": 249074467.3,
                "count": 4634980,
                "maximum": 249075474.6,
                "minimum": 249071334.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1470.509437,
                "variance": 2162398.004
              },
              {
                "average": 0.506592693,
                "count": 4634980,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999565884,
                "variance": 0.2499565903
              },
              {
                "average": 0,
                "count": 4634980,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4634980,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4634980,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1870113787,
                "count": 4634980,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3899207044,
                "variance": 0.1520381557
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -351876.7542,
              2220171.487,
              3.867901986,
              -351362.5742,
              2220673.687,
              6.847901986
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -351876.7541888848,
                    2220171.486805881,
                    3.867901985891865
                  ],
                  [
                    -351876.7541888848,
                    2220673.686805881,
                    3.867901985891865
                  ],
                  [
                    -351362.57418888476,
                    2220673.686805881,
                    6.847901985891865
                  ],
                  [
                    -351362.57418888476,
                    2220171.486805881,
                    6.847901985891865
                  ],
                  [
                    -351876.7541888848,
                    2220171.486805881,
                    3.867901985891865
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:34+00:00",
            "end_time": "2019-08-05T20:15:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00152.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0179527560756,
              69.74448927512677,
              1.090266115646316
            ],
            [
              -163.01954720011224,
              69.7486596742385,
              1.090266115646316
            ],
            [
              -163.01302418033222,
              69.74897811986966,
              12.530266115646317
            ],
            [
              -163.01143086095038,
              69.74480765814862,
              12.530266115646317
            ],
            [
              -163.0179527560756,
              69.74448927512677,
              1.090266115646316
            ]
          ]
        ]
      },
      "bbox": [
        -163.0195472,
        69.74448928,
        1.090266116,
        -163.0114309,
        69.74897812,
        12.53026612
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:54Z",
        "pc:count": 1968669,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352804.8329,
            "count": 1968669,
            "maximum": -352692.4817,
            "minimum": -352950.9017,
            "name": "X",
            "position": 0,
            "stddev": 55.40310354,
            "variance": 3069.503882
          },
          {
            "average": 2221005.92,
            "count": 1968669,
            "maximum": 2221247.061,
            "minimum": 2220784.741,
            "name": "Y",
            "position": 1,
            "stddev": 127.4473119,
            "variance": 16242.8173
          },
          {
            "average": 1.76298385,
            "count": 1968669,
            "maximum": 12.53026612,
            "minimum": 1.090266116,
            "name": "Z",
            "position": 2,
            "stddev": 1.629779365,
            "variance": 2.656180778
          },
          {
            "average": 17490.89115,
            "count": 1968669,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 14786.53201,
            "variance": 218641528.9
          },
          {
            "average": 1.000022858,
            "count": 1968669,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004780959362,
            "variance": 2.285757242e-05
          },
          {
            "average": 1.000045716,
            "count": 1968669,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006761220294,
            "variance": 4.571409986e-05
          },
          {
            "average": 0.4950659557,
            "count": 1968669,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999757816,
            "variance": 0.2499757822
          },
          {
            "average": 0.0002433115978,
            "count": 1968669,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01559655478,
            "variance": 0.0002432525209
          },
          {
            "average": 6.553531345,
            "count": 1968669,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.661273334,
            "variance": 13.40492243
          },
          {
            "average": -1.068703411,
            "count": 1968669,
            "maximum": 12.96000004,
            "minimum": -19.04999924,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.79734096,
            "variance": 95.98788988
          },
          {
            "average": 0.5058600506,
            "count": 1968669,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999657856,
            "variance": 0.2499657868
          },
          {
            "average": 258.9972474,
            "count": 1968669,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 13.8342119,
            "variance": 191.385419
          },
          {
            "average": 249074352.3,
            "count": 1968669,
            "maximum": 249075494.8,
            "minimum": 249071326.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1101.821407,
            "variance": 1214010.413
          },
          {
            "average": 0.5058600506,
            "count": 1968669,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999657856,
            "variance": 0.2499657868
          },
          {
            "average": 0,
            "count": 1968669,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1968669,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1968669,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1090173107,
            "count": 1968669,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3116610113,
            "variance": 0.09713258599
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352950.9017,
          2220784.741,
          1.090266116,
          -352692.4817,
          2221247.061,
          12.53026612
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352950.90173219057,
                2220784.7409446808,
                1.090266115646316
              ],
              [
                -352950.90173219057,
                2221247.060944681,
                1.090266115646316
              ],
              [
                -352692.4817321905,
                2221247.060944681,
                12.530266115646317
              ],
              [
                -352692.4817321905,
                2220784.7409446808,
                12.530266115646317
              ],
              [
                -352950.90173219057,
                2220784.7409446808,
                1.090266115646316
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:54+00:00",
        "end_time": "2019-08-05T20:15:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00152.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00152.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00152.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00152.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0195472,
            69.74448928,
            1.090266116,
            -163.0114309,
            69.74897812,
            12.53026612
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0179527560756,
                  69.74448927512677,
                  1.090266115646316
                ],
                [
                  -163.01954720011224,
                  69.7486596742385,
                  1.090266115646316
                ],
                [
                  -163.01302418033222,
                  69.74897811986966,
                  12.530266115646317
                ],
                [
                  -163.01143086095038,
                  69.74480765814862,
                  12.530266115646317
                ],
                [
                  -163.0179527560756,
                  69.74448927512677,
                  1.090266115646316
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00152.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00152.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:54Z",
            "pc:count": 1968669,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352804.8329,
                "count": 1968669,
                "maximum": -352692.4817,
                "minimum": -352950.9017,
                "name": "X",
                "position": 0,
                "stddev": 55.40310354,
                "variance": 3069.503882
              },
              {
                "average": 2221005.92,
                "count": 1968669,
                "maximum": 2221247.061,
                "minimum": 2220784.741,
                "name": "Y",
                "position": 1,
                "stddev": 127.4473119,
                "variance": 16242.8173
              },
              {
                "average": 1.76298385,
                "count": 1968669,
                "maximum": 12.53026612,
                "minimum": 1.090266116,
                "name": "Z",
                "position": 2,
                "stddev": 1.629779365,
                "variance": 2.656180778
              },
              {
                "average": 17490.89115,
                "count": 1968669,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 14786.53201,
                "variance": 218641528.9
              },
              {
                "average": 1.000022858,
                "count": 1968669,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004780959362,
                "variance": 2.285757242e-05
              },
              {
                "average": 1.000045716,
                "count": 1968669,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006761220294,
                "variance": 4.571409986e-05
              },
              {
                "average": 0.4950659557,
                "count": 1968669,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999757816,
                "variance": 0.2499757822
              },
              {
                "average": 0.0002433115978,
                "count": 1968669,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01559655478,
                "variance": 0.0002432525209
              },
              {
                "average": 6.553531345,
                "count": 1968669,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.661273334,
                "variance": 13.40492243
              },
              {
                "average": -1.068703411,
                "count": 1968669,
                "maximum": 12.96000004,
                "minimum": -19.04999924,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.79734096,
                "variance": 95.98788988
              },
              {
                "average": 0.5058600506,
                "count": 1968669,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999657856,
                "variance": 0.2499657868
              },
              {
                "average": 258.9972474,
                "count": 1968669,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 13.8342119,
                "variance": 191.385419
              },
              {
                "average": 249074352.3,
                "count": 1968669,
                "maximum": 249075494.8,
                "minimum": 249071326.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1101.821407,
                "variance": 1214010.413
              },
              {
                "average": 0.5058600506,
                "count": 1968669,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999657856,
                "variance": 0.2499657868
              },
              {
                "average": 0,
                "count": 1968669,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1968669,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1968669,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1090173107,
                "count": 1968669,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3116610113,
                "variance": 0.09713258599
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352950.9017,
              2220784.741,
              1.090266116,
              -352692.4817,
              2221247.061,
              12.53026612
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352950.90173219057,
                    2220784.7409446808,
                    1.090266115646316
                  ],
                  [
                    -352950.90173219057,
                    2221247.060944681,
                    1.090266115646316
                  ],
                  [
                    -352692.4817321905,
                    2221247.060944681,
                    12.530266115646317
                  ],
                  [
                    -352692.4817321905,
                    2220784.7409446808,
                    12.530266115646317
                  ],
                  [
                    -352950.90173219057,
                    2220784.7409446808,
                    1.090266115646316
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:54+00:00",
            "end_time": "2019-08-05T20:15:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00154.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.00075353139985,
              69.74431121019434,
              3.608637914617528
            ],
            [
              -163.0024822433771,
              69.7488415100099,
              3.608637914617528
            ],
            [
              -162.98950363069403,
              69.74947365798846,
              52.168637914617534
            ],
            [
              -162.98777734973595,
              69.74494322316016,
              52.168637914617534
            ],
            [
              -163.00075353139985,
              69.74431121019434,
              3.608637914617528
            ]
          ]
        ]
      },
      "bbox": [
        -163.0024822,
        69.74431121,
        3.608637915,
        -162.9877773,
        69.74947366,
        52.16863791
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:40Z",
        "pc:count": 5299508,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352024.7803,
            "count": 5299508,
            "maximum": -351770.3799,
            "minimum": -352284.5199,
            "name": "X",
            "position": 0,
            "stddev": 132.9552616,
            "variance": 17677.10159
          },
          {
            "average": 2220924.596,
            "count": 5299508,
            "maximum": 2221176.241,
            "minimum": 2220674.041,
            "name": "Y",
            "position": 1,
            "stddev": 128.6813392,
            "variance": 16558.88705
          },
          {
            "average": 4.586400071,
            "count": 5299508,
            "maximum": 52.16863791,
            "minimum": 3.608637915,
            "name": "Z",
            "position": 2,
            "stddev": 0.4820059058,
            "variance": 0.2323296932
          },
          {
            "average": 42858.03905,
            "count": 5299508,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 13338.01042,
            "variance": 177902522
          },
          {
            "average": 1.000001321,
            "count": 5299508,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001149293626,
            "variance": 1.320875839e-06
          },
          {
            "average": 1.000002642,
            "count": 5299508,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00162534556,
            "variance": 2.641748188e-06
          },
          {
            "average": 0.4965409997,
            "count": 5299508,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999880823,
            "variance": 0.2499880825
          },
          {
            "average": 0.0004039997675,
            "count": 5299508,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0200956868,
            "variance": 0.0004038366279
          },
          {
            "average": 1.18500491,
            "count": 5299508,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3899948462,
            "variance": 0.1520959801
          },
          {
            "average": 2.155759292,
            "count": 5299508,
            "maximum": 21.94799995,
            "minimum": -16.0739994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.83274025,
            "variance": 140.0137418
          },
          {
            "average": 0.4884825157,
            "count": 5299508,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998673771,
            "variance": 0.2498673947
          },
          {
            "average": 268.129138,
            "count": 5299508,
            "maximum": 301,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.5358054,
            "variance": 381.6476925
          },
          {
            "average": 249074073.7,
            "count": 5299508,
            "maximum": 249075480.2,
            "minimum": 249071327.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1583.770954,
            "variance": 2508330.435
          },
          {
            "average": 0.4884825157,
            "count": 5299508,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998673771,
            "variance": 0.2498673947
          },
          {
            "average": 0,
            "count": 5299508,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5299508,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5299508,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2455371329,
            "count": 5299508,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4304052558,
            "variance": 0.1852486842
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352284.5199,
          2220674.041,
          3.608637915,
          -351770.3799,
          2221176.241,
          52.16863791
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352284.5198536738,
                2220674.040927219,
                3.608637914617528
              ],
              [
                -352284.5198536738,
                2221176.2409272194,
                3.608637914617528
              ],
              [
                -351770.3798536738,
                2221176.2409272194,
                52.168637914617534
              ],
              [
                -351770.3798536738,
                2220674.040927219,
                52.168637914617534
              ],
              [
                -352284.5198536738,
                2220674.040927219,
                3.608637914617528
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:40+00:00",
        "end_time": "2019-08-05T20:15:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00154.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00154.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00154.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00154.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0024822,
            69.74431121,
            3.608637915,
            -162.9877773,
            69.74947366,
            52.16863791
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.00075353139985,
                  69.74431121019434,
                  3.608637914617528
                ],
                [
                  -163.0024822433771,
                  69.7488415100099,
                  3.608637914617528
                ],
                [
                  -162.98950363069403,
                  69.74947365798846,
                  52.168637914617534
                ],
                [
                  -162.98777734973595,
                  69.74494322316016,
                  52.168637914617534
                ],
                [
                  -163.00075353139985,
                  69.74431121019434,
                  3.608637914617528
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00154.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00154.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:40Z",
            "pc:count": 5299508,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352024.7803,
                "count": 5299508,
                "maximum": -351770.3799,
                "minimum": -352284.5199,
                "name": "X",
                "position": 0,
                "stddev": 132.9552616,
                "variance": 17677.10159
              },
              {
                "average": 2220924.596,
                "count": 5299508,
                "maximum": 2221176.241,
                "minimum": 2220674.041,
                "name": "Y",
                "position": 1,
                "stddev": 128.6813392,
                "variance": 16558.88705
              },
              {
                "average": 4.586400071,
                "count": 5299508,
                "maximum": 52.16863791,
                "minimum": 3.608637915,
                "name": "Z",
                "position": 2,
                "stddev": 0.4820059058,
                "variance": 0.2323296932
              },
              {
                "average": 42858.03905,
                "count": 5299508,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 13338.01042,
                "variance": 177902522
              },
              {
                "average": 1.000001321,
                "count": 5299508,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001149293626,
                "variance": 1.320875839e-06
              },
              {
                "average": 1.000002642,
                "count": 5299508,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00162534556,
                "variance": 2.641748188e-06
              },
              {
                "average": 0.4965409997,
                "count": 5299508,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999880823,
                "variance": 0.2499880825
              },
              {
                "average": 0.0004039997675,
                "count": 5299508,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0200956868,
                "variance": 0.0004038366279
              },
              {
                "average": 1.18500491,
                "count": 5299508,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3899948462,
                "variance": 0.1520959801
              },
              {
                "average": 2.155759292,
                "count": 5299508,
                "maximum": 21.94799995,
                "minimum": -16.0739994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.83274025,
                "variance": 140.0137418
              },
              {
                "average": 0.4884825157,
                "count": 5299508,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998673771,
                "variance": 0.2498673947
              },
              {
                "average": 268.129138,
                "count": 5299508,
                "maximum": 301,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.5358054,
                "variance": 381.6476925
              },
              {
                "average": 249074073.7,
                "count": 5299508,
                "maximum": 249075480.2,
                "minimum": 249071327.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1583.770954,
                "variance": 2508330.435
              },
              {
                "average": 0.4884825157,
                "count": 5299508,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998673771,
                "variance": 0.2498673947
              },
              {
                "average": 0,
                "count": 5299508,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5299508,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5299508,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2455371329,
                "count": 5299508,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4304052558,
                "variance": 0.1852486842
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352284.5199,
              2220674.041,
              3.608637915,
              -351770.3799,
              2221176.241,
              52.16863791
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352284.5198536738,
                    2220674.040927219,
                    3.608637914617528
                  ],
                  [
                    -352284.5198536738,
                    2221176.2409272194,
                    3.608637914617528
                  ],
                  [
                    -351770.3798536738,
                    2221176.2409272194,
                    52.168637914617534
                  ],
                  [
                    -351770.3798536738,
                    2220674.040927219,
                    52.168637914617534
                  ],
                  [
                    -352284.5198536738,
                    2220674.040927219,
                    3.608637914617528
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:40+00:00",
            "end_time": "2019-08-05T20:15:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00153.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.01257967408202,
              69.74424318630473,
              1.770954908776771
            ],
            [
              -163.01431084534815,
              69.74877391571466,
              1.770954908776771
            ],
            [
              -163.0013320798099,
              69.74940691419224,
              28.47095490877677
            ],
            [
              -162.99960333969352,
              69.74487604957551,
              28.47095490877677
            ],
            [
              -163.01257967408202,
              69.74424318630473,
              1.770954908776771
            ]
          ]
        ]
      },
      "bbox": [
        -163.0143108,
        69.74424319,
        1.770954909,
        -162.9996033,
        69.74940691,
        28.47095491
      ],
      "properties": {
        "datetime": "2019-08-05T21:24:50Z",
        "pc:count": 5905378,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352499.4082,
            "count": 5905378,
            "maximum": -352231.3962,
            "minimum": -352745.5562,
            "name": "X",
            "position": 0,
            "stddev": 136.4065621,
            "variance": 18606.75018
          },
          {
            "average": 2220981.544,
            "count": 5905378,
            "maximum": 2221231.672,
            "minimum": 2220729.412,
            "name": "Y",
            "position": 1,
            "stddev": 130.020723,
            "variance": 16905.38842
          },
          {
            "average": 9.054788353,
            "count": 5905378,
            "maximum": 28.47095491,
            "minimum": 1.770954909,
            "name": "Z",
            "position": 2,
            "stddev": 3.095818747,
            "variance": 9.584093717
          },
          {
            "average": 48336.35832,
            "count": 5905378,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14149.34348,
            "variance": 200203920.9
          },
          {
            "average": 1.007649807,
            "count": 5905378,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08870930104,
            "variance": 0.007869340092
          },
          {
            "average": 1.015299783,
            "count": 5905378,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1260986635,
            "variance": 0.01590087294
          },
          {
            "average": 0.5133910141,
            "count": 5905378,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998206909,
            "variance": 0.249820723
          },
          {
            "average": 0.0003141204509,
            "count": 5905378,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01772066117,
            "variance": 0.0003140218324
          },
          {
            "average": 1.277843518,
            "count": 5905378,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7357519705,
            "variance": 0.5413309621
          },
          {
            "average": -0.8508937972,
            "count": 5905378,
            "maximum": 16.54800034,
            "minimum": -15.94200039,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.17712972,
            "variance": 103.5739694
          },
          {
            "average": 0.5319344503,
            "count": 5905378,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.498979191,
            "variance": 0.248980233
          },
          {
            "average": 260.6950961,
            "count": 5905378,
            "maximum": 300,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 14.67607455,
            "variance": 215.3871641
          },
          {
            "average": 249074419.5,
            "count": 5905378,
            "maximum": 249075490.8,
            "minimum": 249071326.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1215.608055,
            "variance": 1477702.944
          },
          {
            "average": 0.5319344503,
            "count": 5905378,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.498979191,
            "variance": 0.248980233
          },
          {
            "average": 0,
            "count": 5905378,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5905378,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5905378,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.200408001,
            "count": 5905378,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4003057097,
            "variance": 0.1602446613
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352745.5562,
          2220729.412,
          1.770954909,
          -352231.3962,
          2221231.672,
          28.47095491
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352745.55624585453,
                2220729.41200322,
                1.770954908776771
              ],
              [
                -352745.55624585453,
                2221231.67200322,
                1.770954908776771
              ],
              [
                -352231.3962458545,
                2221231.67200322,
                28.47095490877677
              ],
              [
                -352231.3962458545,
                2220729.41200322,
                28.47095490877677
              ],
              [
                -352745.55624585453,
                2220729.41200322,
                1.770954908776771
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:24:50+00:00",
        "end_time": "2019-08-05T20:15:26+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00153.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00153.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00153.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00153.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0143108,
            69.74424319,
            1.770954909,
            -162.9996033,
            69.74940691,
            28.47095491
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.01257967408202,
                  69.74424318630473,
                  1.770954908776771
                ],
                [
                  -163.01431084534815,
                  69.74877391571466,
                  1.770954908776771
                ],
                [
                  -163.0013320798099,
                  69.74940691419224,
                  28.47095490877677
                ],
                [
                  -162.99960333969352,
                  69.74487604957551,
                  28.47095490877677
                ],
                [
                  -163.01257967408202,
                  69.74424318630473,
                  1.770954908776771
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00153.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00153.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:24:50Z",
            "pc:count": 5905378,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352499.4082,
                "count": 5905378,
                "maximum": -352231.3962,
                "minimum": -352745.5562,
                "name": "X",
                "position": 0,
                "stddev": 136.4065621,
                "variance": 18606.75018
              },
              {
                "average": 2220981.544,
                "count": 5905378,
                "maximum": 2221231.672,
                "minimum": 2220729.412,
                "name": "Y",
                "position": 1,
                "stddev": 130.020723,
                "variance": 16905.38842
              },
              {
                "average": 9.054788353,
                "count": 5905378,
                "maximum": 28.47095491,
                "minimum": 1.770954909,
                "name": "Z",
                "position": 2,
                "stddev": 3.095818747,
                "variance": 9.584093717
              },
              {
                "average": 48336.35832,
                "count": 5905378,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14149.34348,
                "variance": 200203920.9
              },
              {
                "average": 1.007649807,
                "count": 5905378,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08870930104,
                "variance": 0.007869340092
              },
              {
                "average": 1.015299783,
                "count": 5905378,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1260986635,
                "variance": 0.01590087294
              },
              {
                "average": 0.5133910141,
                "count": 5905378,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998206909,
                "variance": 0.249820723
              },
              {
                "average": 0.0003141204509,
                "count": 5905378,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01772066117,
                "variance": 0.0003140218324
              },
              {
                "average": 1.277843518,
                "count": 5905378,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7357519705,
                "variance": 0.5413309621
              },
              {
                "average": -0.8508937972,
                "count": 5905378,
                "maximum": 16.54800034,
                "minimum": -15.94200039,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.17712972,
                "variance": 103.5739694
              },
              {
                "average": 0.5319344503,
                "count": 5905378,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.498979191,
                "variance": 0.248980233
              },
              {
                "average": 260.6950961,
                "count": 5905378,
                "maximum": 300,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 14.67607455,
                "variance": 215.3871641
              },
              {
                "average": 249074419.5,
                "count": 5905378,
                "maximum": 249075490.8,
                "minimum": 249071326.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1215.608055,
                "variance": 1477702.944
              },
              {
                "average": 0.5319344503,
                "count": 5905378,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.498979191,
                "variance": 0.248980233
              },
              {
                "average": 0,
                "count": 5905378,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5905378,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5905378,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.200408001,
                "count": 5905378,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4003057097,
                "variance": 0.1602446613
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352745.5562,
              2220729.412,
              1.770954909,
              -352231.3962,
              2221231.672,
              28.47095491
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352745.55624585453,
                    2220729.41200322,
                    1.770954908776771
                  ],
                  [
                    -352745.55624585453,
                    2221231.67200322,
                    1.770954908776771
                  ],
                  [
                    -352231.3962458545,
                    2221231.67200322,
                    28.47095490877677
                  ],
                  [
                    -352231.3962458545,
                    2220729.41200322,
                    28.47095490877677
                  ],
                  [
                    -352745.55624585453,
                    2220729.41200322,
                    1.770954908776771
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:24:50+00:00",
            "end_time": "2019-08-05T20:15:26+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00085.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.02361577390027,
              69.72778216679036,
              1.014116620091084
            ],
            [
              -163.02534812649048,
              69.73231314138668,
              1.014116620091084
            ],
            [
              -163.0123776421328,
              69.73294690802345,
              24.174116620091084
            ],
            [
              -163.01064771767454,
              69.72841579816928,
              24.174116620091084
            ],
            [
              -163.02361577390027,
              69.72778216679036,
              1.014116620091084
            ]
          ]
        ]
      },
      "bbox": [
        -163.0253481,
        69.72778217,
        1.01411662,
        -163.0106477,
        69.73294691,
        24.17411662
      ],
      "properties": {
        "datetime": "2019-08-05T21:13:17Z",
        "pc:count": 5591186,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -353163.9247,
            "count": 5591186,
            "maximum": -352905.5647,
            "minimum": -353419.7647,
            "name": "X",
            "position": 0,
            "stddev": 131.7336126,
            "variance": 17353.74468
          },
          {
            "average": 2219255.997,
            "count": 5591186,
            "maximum": 2219498.95,
            "minimum": 2218996.61,
            "name": "Y",
            "position": 1,
            "stddev": 127.7256438,
            "variance": 16313.84008
          },
          {
            "average": 6.142625799,
            "count": 5591186,
            "maximum": 24.17411662,
            "minimum": 1.01411662,
            "name": "Z",
            "position": 2,
            "stddev": 2.311376161,
            "variance": 5.342459758
          },
          {
            "average": 38704.94763,
            "count": 5591186,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 17898.60682,
            "variance": 320360126.1
          },
          {
            "average": 1.000653886,
            "count": 5591186,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02660507777,
            "variance": 0.0007078301633
          },
          {
            "average": 1.001307773,
            "count": 5591186,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.03832983815,
            "variance": 0.001469176492
          },
          {
            "average": 0.4977800774,
            "count": 5591186,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951166,
            "variance": 0.2499951167
          },
          {
            "average": 0.000441409032,
            "count": 5591186,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02100510102,
            "variance": 0.000441214269
          },
          {
            "average": 1.81261507,
            "count": 5591186,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.128156716,
            "variance": 4.529051008
          },
          {
            "average": -3.260973648,
            "count": 5591186,
            "maximum": 16.41600037,
            "minimum": -21.09600067,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.1754425,
            "variance": 124.8905151
          },
          {
            "average": 0.4678136267,
            "count": 5591186,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989630065,
            "variance": 0.2489640819
          },
          {
            "average": 261.3376214,
            "count": 5591186,
            "maximum": 307,
            "minimum": 250,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 19.35334768,
            "variance": 374.5520663
          },
          {
            "average": 249073963.4,
            "count": 5591186,
            "maximum": 249074797.7,
            "minimum": 249071353.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 927.9758607,
            "variance": 861139.198
          },
          {
            "average": 0.4678136267,
            "count": 5591186,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989630065,
            "variance": 0.2489640819
          },
          {
            "average": 0,
            "count": 5591186,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5591186,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5591186,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2236945793,
            "count": 5591186,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4167197446,
            "variance": 0.1736553455
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -353419.7647,
          2218996.61,
          1.01411662,
          -352905.5647,
          2219498.95,
          24.17411662
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -353419.764713758,
                2218996.609596123,
                1.014116620091084
              ],
              [
                -353419.764713758,
                2219498.949596123,
                1.014116620091084
              ],
              [
                -352905.56471375807,
                2219498.949596123,
                24.174116620091084
              ],
              [
                -352905.56471375807,
                2218996.609596123,
                24.174116620091084
              ],
              [
                -353419.764713758,
                2218996.609596123,
                1.014116620091084
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:13:17+00:00",
        "end_time": "2019-08-05T20:15:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00085.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00085.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00085.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00085.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0253481,
            69.72778217,
            1.01411662,
            -163.0106477,
            69.73294691,
            24.17411662
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.02361577390027,
                  69.72778216679036,
                  1.014116620091084
                ],
                [
                  -163.02534812649048,
                  69.73231314138668,
                  1.014116620091084
                ],
                [
                  -163.0123776421328,
                  69.73294690802345,
                  24.174116620091084
                ],
                [
                  -163.01064771767454,
                  69.72841579816928,
                  24.174116620091084
                ],
                [
                  -163.02361577390027,
                  69.72778216679036,
                  1.014116620091084
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00085.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00085.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:13:17Z",
            "pc:count": 5591186,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -353163.9247,
                "count": 5591186,
                "maximum": -352905.5647,
                "minimum": -353419.7647,
                "name": "X",
                "position": 0,
                "stddev": 131.7336126,
                "variance": 17353.74468
              },
              {
                "average": 2219255.997,
                "count": 5591186,
                "maximum": 2219498.95,
                "minimum": 2218996.61,
                "name": "Y",
                "position": 1,
                "stddev": 127.7256438,
                "variance": 16313.84008
              },
              {
                "average": 6.142625799,
                "count": 5591186,
                "maximum": 24.17411662,
                "minimum": 1.01411662,
                "name": "Z",
                "position": 2,
                "stddev": 2.311376161,
                "variance": 5.342459758
              },
              {
                "average": 38704.94763,
                "count": 5591186,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 17898.60682,
                "variance": 320360126.1
              },
              {
                "average": 1.000653886,
                "count": 5591186,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02660507777,
                "variance": 0.0007078301633
              },
              {
                "average": 1.001307773,
                "count": 5591186,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.03832983815,
                "variance": 0.001469176492
              },
              {
                "average": 0.4977800774,
                "count": 5591186,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951166,
                "variance": 0.2499951167
              },
              {
                "average": 0.000441409032,
                "count": 5591186,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02100510102,
                "variance": 0.000441214269
              },
              {
                "average": 1.81261507,
                "count": 5591186,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.128156716,
                "variance": 4.529051008
              },
              {
                "average": -3.260973648,
                "count": 5591186,
                "maximum": 16.41600037,
                "minimum": -21.09600067,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.1754425,
                "variance": 124.8905151
              },
              {
                "average": 0.4678136267,
                "count": 5591186,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989630065,
                "variance": 0.2489640819
              },
              {
                "average": 261.3376214,
                "count": 5591186,
                "maximum": 307,
                "minimum": 250,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 19.35334768,
                "variance": 374.5520663
              },
              {
                "average": 249073963.4,
                "count": 5591186,
                "maximum": 249074797.7,
                "minimum": 249071353.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 927.9758607,
                "variance": 861139.198
              },
              {
                "average": 0.4678136267,
                "count": 5591186,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989630065,
                "variance": 0.2489640819
              },
              {
                "average": 0,
                "count": 5591186,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5591186,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5591186,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2236945793,
                "count": 5591186,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4167197446,
                "variance": 0.1736553455
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -353419.7647,
              2218996.61,
              1.01411662,
              -352905.5647,
              2219498.95,
              24.17411662
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -353419.764713758,
                    2218996.609596123,
                    1.014116620091084
                  ],
                  [
                    -353419.764713758,
                    2219498.949596123,
                    1.014116620091084
                  ],
                  [
                    -352905.56471375807,
                    2219498.949596123,
                    24.174116620091084
                  ],
                  [
                    -352905.56471375807,
                    2218996.609596123,
                    24.174116620091084
                  ],
                  [
                    -353419.764713758,
                    2218996.609596123,
                    1.014116620091084
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:13:17+00:00",
            "end_time": "2019-08-05T20:15:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00086.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -163.0117971550077,
              69.72785050073728,
              0.993575735052355
            ],
            [
              -163.01352718870547,
              69.73238140667254,
              0.993575735052355
            ],
            [
              -163.00055736105392,
              69.73301429874097,
              10.273575735052354
            ],
            [
              -162.99882975545697,
              69.72848325773612,
              10.273575735052354
            ],
            [
              -163.0117971550077,
              69.72785050073728,
              0.993575735052355
            ]
          ]
        ]
      },
      "bbox": [
        -163.0135272,
        69.7278505,
        0.9935757351,
        -162.9988298,
        69.7330143,
        10.27357574
      ],
      "properties": {
        "datetime": "2019-08-05T21:15:30Z",
        "pc:count": 5057517,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352707.8823,
            "count": 5057517,
            "maximum": -352444.5467,
            "minimum": -352958.7067,
            "name": "X",
            "position": 0,
            "stddev": 136.6667883,
            "variance": 18677.81101
          },
          {
            "average": 2219196.45,
            "count": 5057517,
            "maximum": 2219443.513,
            "minimum": 2218941.193,
            "name": "Y",
            "position": 1,
            "stddev": 128.1647947,
            "variance": 16426.2146
          },
          {
            "average": 3.949595859,
            "count": 5057517,
            "maximum": 10.27357574,
            "minimum": 0.9935757351,
            "name": "Z",
            "position": 2,
            "stddev": 1.323252549,
            "variance": 1.750997308
          },
          {
            "average": 46014.40641,
            "count": 5057517,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 15549.21068,
            "variance": 241777952.7
          },
          {
            "average": 1.000131092,
            "count": 5057517,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01220123495,
            "variance": 0.0001488701343
          },
          {
            "average": 1.000262184,
            "count": 5057517,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01774007591,
            "variance": 0.0003147102934
          },
          {
            "average": 0.5106385208,
            "count": 5057517,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998868585,
            "variance": 0.2498868713
          },
          {
            "average": 0.0003839828912,
            "count": 5057517,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01959172081,
            "variance": 0.0003838355242
          },
          {
            "average": 1.673401197,
            "count": 5057517,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.915358394,
            "variance": 3.668597777
          },
          {
            "average": -1.050518837,
            "count": 5057517,
            "maximum": 16.36199951,
            "minimum": -20.93400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.43526776,
            "variance": 130.7653488
          },
          {
            "average": 0.5228413469,
            "count": 5057517,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994780498,
            "variance": 0.2494783222
          },
          {
            "average": 267.4801467,
            "count": 5057517,
            "maximum": 307,
            "minimum": 251,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.99091636,
            "variance": 483.6004022
          },
          {
            "average": 249073964.1,
            "count": 5057517,
            "maximum": 249074930.6,
            "minimum": 249071353.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1187.875097,
            "variance": 1411047.247
          },
          {
            "average": 0.5228413469,
            "count": 5057517,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994780498,
            "variance": 0.2494783222
          },
          {
            "average": 0,
            "count": 5057517,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5057517,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5057517,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2335620424,
            "count": 5057517,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4230967385,
            "variance": 0.1790108501
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352958.7067,
          2218941.193,
          0.9935757351,
          -352444.5467,
          2219443.513,
          10.27357574
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352958.70668923325,
                2218941.1926631234,
                0.993575735052355
              ],
              [
                -352958.70668923325,
                2219443.5126631237,
                0.993575735052355
              ],
              [
                -352444.5466892332,
                2219443.5126631237,
                10.273575735052354
              ],
              [
                -352444.5466892332,
                2218941.1926631234,
                10.273575735052354
              ],
              [
                -352958.70668923325,
                2218941.1926631234,
                0.993575735052355
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:15:30+00:00",
        "end_time": "2019-08-05T20:15:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00086.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00086.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00086.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00086.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0135272,
            69.7278505,
            0.9935757351,
            -162.9988298,
            69.7330143,
            10.27357574
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -163.0117971550077,
                  69.72785050073728,
                  0.993575735052355
                ],
                [
                  -163.01352718870547,
                  69.73238140667254,
                  0.993575735052355
                ],
                [
                  -163.00055736105392,
                  69.73301429874097,
                  10.273575735052354
                ],
                [
                  -162.99882975545697,
                  69.72848325773612,
                  10.273575735052354
                ],
                [
                  -163.0117971550077,
                  69.72785050073728,
                  0.993575735052355
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00086.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00086.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:15:30Z",
            "pc:count": 5057517,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352707.8823,
                "count": 5057517,
                "maximum": -352444.5467,
                "minimum": -352958.7067,
                "name": "X",
                "position": 0,
                "stddev": 136.6667883,
                "variance": 18677.81101
              },
              {
                "average": 2219196.45,
                "count": 5057517,
                "maximum": 2219443.513,
                "minimum": 2218941.193,
                "name": "Y",
                "position": 1,
                "stddev": 128.1647947,
                "variance": 16426.2146
              },
              {
                "average": 3.949595859,
                "count": 5057517,
                "maximum": 10.27357574,
                "minimum": 0.9935757351,
                "name": "Z",
                "position": 2,
                "stddev": 1.323252549,
                "variance": 1.750997308
              },
              {
                "average": 46014.40641,
                "count": 5057517,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 15549.21068,
                "variance": 241777952.7
              },
              {
                "average": 1.000131092,
                "count": 5057517,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01220123495,
                "variance": 0.0001488701343
              },
              {
                "average": 1.000262184,
                "count": 5057517,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01774007591,
                "variance": 0.0003147102934
              },
              {
                "average": 0.5106385208,
                "count": 5057517,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998868585,
                "variance": 0.2498868713
              },
              {
                "average": 0.0003839828912,
                "count": 5057517,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01959172081,
                "variance": 0.0003838355242
              },
              {
                "average": 1.673401197,
                "count": 5057517,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.915358394,
                "variance": 3.668597777
              },
              {
                "average": -1.050518837,
                "count": 5057517,
                "maximum": 16.36199951,
                "minimum": -20.93400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.43526776,
                "variance": 130.7653488
              },
              {
                "average": 0.5228413469,
                "count": 5057517,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994780498,
                "variance": 0.2494783222
              },
              {
                "average": 267.4801467,
                "count": 5057517,
                "maximum": 307,
                "minimum": 251,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.99091636,
                "variance": 483.6004022
              },
              {
                "average": 249073964.1,
                "count": 5057517,
                "maximum": 249074930.6,
                "minimum": 249071353.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1187.875097,
                "variance": 1411047.247
              },
              {
                "average": 0.5228413469,
                "count": 5057517,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994780498,
                "variance": 0.2494783222
              },
              {
                "average": 0,
                "count": 5057517,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5057517,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5057517,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2335620424,
                "count": 5057517,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4230967385,
                "variance": 0.1790108501
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352958.7067,
              2218941.193,
              0.9935757351,
              -352444.5467,
              2219443.513,
              10.27357574
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352958.70668923325,
                    2218941.1926631234,
                    0.993575735052355
                  ],
                  [
                    -352958.70668923325,
                    2219443.5126631237,
                    0.993575735052355
                  ],
                  [
                    -352444.5466892332,
                    2219443.5126631237,
                    10.273575735052354
                  ],
                  [
                    -352444.5466892332,
                    2218941.1926631234,
                    10.273575735052354
                  ],
                  [
                    -352958.70668923325,
                    2218941.1926631234,
                    0.993575735052355
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:15:30+00:00",
            "end_time": "2019-08-05T20:15:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00087.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.99997978280143,
              69.7279178179401,
              2.606334952427186
            ],
            [
              -163.00170749788202,
              69.73244865502724,
              2.606334952427186
            ],
            [
              -162.98873681439107,
              69.7330807464255,
              46.24633495242719
            ],
            [
              -162.98701152766287,
              69.72854977444116,
              46.24633495242719
            ],
            [
              -162.99997978280143,
              69.7279178179401,
              2.606334952427186
            ]
          ]
        ]
      },
      "bbox": [
        -163.0017075,
        69.72791782,
        2.606334952,
        -162.9870115,
        69.73308075,
        46.24633495
      ],
      "properties": {
        "datetime": "2019-08-05T21:19:07Z",
        "pc:count": 5096519,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -352239.2718,
            "count": 5096519,
            "maximum": -351983.5238,
            "minimum": -352497.7038,
            "name": "X",
            "position": 0,
            "stddev": 131.2786933,
            "variance": 17234.09532
          },
          {
            "average": 2219134.222,
            "count": 5096519,
            "maximum": 2219388.054,
            "minimum": 2218885.754,
            "name": "Y",
            "position": 1,
            "stddev": 129.3804711,
            "variance": 16739.3063
          },
          {
            "average": 3.273663592,
            "count": 5096519,
            "maximum": 46.24633495,
            "minimum": 2.606334952,
            "name": "Z",
            "position": 2,
            "stddev": 0.2937188176,
            "variance": 0.08627074383
          },
          {
            "average": 42262.13552,
            "count": 5096519,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 14217.97287,
            "variance": 202150752.4
          },
          {
            "average": 1.000000589,
            "count": 5096519,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.000767226718,
            "variance": 5.886368368e-07
          },
          {
            "average": 1.000001177,
            "count": 5096519,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001085022111,
            "variance": 1.177272981e-06
          },
          {
            "average": 0.4952870773,
            "count": 5096519,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999778369,
            "variance": 0.2499778374
          },
          {
            "average": 0.0004832710326,
            "count": 5096519,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02197811585,
            "variance": 0.0004830375765
          },
          {
            "average": 1.192017924,
            "count": 5096519,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3946644639,
            "variance": 0.1557600391
          },
          {
            "average": 1.334366997,
            "count": 5096519,
            "maximum": 21.52199936,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 12.51606943,
            "variance": 156.651994
          },
          {
            "average": 0.4822882049,
            "count": 5096519,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996862429,
            "variance": 0.2496863413
          },
          {
            "average": 273.1865218,
            "count": 5096519,
            "maximum": 307,
            "minimum": 254,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 22.71749225,
            "variance": 516.0844542
          },
          {
            "average": 249073819.8,
            "count": 5096519,
            "maximum": 249075147.2,
            "minimum": 249071354.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1494.245704,
            "variance": 2232770.225
          },
          {
            "average": 0.4822882049,
            "count": 5096519,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996862429,
            "variance": 0.2496863413
          },
          {
            "average": 0,
            "count": 5096519,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5096519,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5096519,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2542052723,
            "count": 5096519,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4354135839,
            "variance": 0.189584989
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352497.7038,
          2218885.754,
          2.606334952,
          -351983.5238,
          2219388.054,
          46.24633495
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352497.7037522633,
                2218885.7539144927,
                2.606334952427186
              ],
              [
                -352497.7037522633,
                2219388.0539144925,
                2.606334952427186
              ],
              [
                -351983.5237522632,
                2219388.0539144925,
                46.24633495242719
              ],
              [
                -351983.5237522632,
                2218885.7539144927,
                46.24633495242719
              ],
              [
                -352497.7037522633,
                2218885.7539144927,
                2.606334952427186
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:19:07+00:00",
        "end_time": "2019-08-05T20:15:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00087.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00087.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00087.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00087.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -163.0017075,
            69.72791782,
            2.606334952,
            -162.9870115,
            69.73308075,
            46.24633495
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.99997978280143,
                  69.7279178179401,
                  2.606334952427186
                ],
                [
                  -163.00170749788202,
                  69.73244865502724,
                  2.606334952427186
                ],
                [
                  -162.98873681439107,
                  69.7330807464255,
                  46.24633495242719
                ],
                [
                  -162.98701152766287,
                  69.72854977444116,
                  46.24633495242719
                ],
                [
                  -162.99997978280143,
                  69.7279178179401,
                  2.606334952427186
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00087.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00087.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:19:07Z",
            "pc:count": 5096519,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -352239.2718,
                "count": 5096519,
                "maximum": -351983.5238,
                "minimum": -352497.7038,
                "name": "X",
                "position": 0,
                "stddev": 131.2786933,
                "variance": 17234.09532
              },
              {
                "average": 2219134.222,
                "count": 5096519,
                "maximum": 2219388.054,
                "minimum": 2218885.754,
                "name": "Y",
                "position": 1,
                "stddev": 129.3804711,
                "variance": 16739.3063
              },
              {
                "average": 3.273663592,
                "count": 5096519,
                "maximum": 46.24633495,
                "minimum": 2.606334952,
                "name": "Z",
                "position": 2,
                "stddev": 0.2937188176,
                "variance": 0.08627074383
              },
              {
                "average": 42262.13552,
                "count": 5096519,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 14217.97287,
                "variance": 202150752.4
              },
              {
                "average": 1.000000589,
                "count": 5096519,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.000767226718,
                "variance": 5.886368368e-07
              },
              {
                "average": 1.000001177,
                "count": 5096519,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001085022111,
                "variance": 1.177272981e-06
              },
              {
                "average": 0.4952870773,
                "count": 5096519,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999778369,
                "variance": 0.2499778374
              },
              {
                "average": 0.0004832710326,
                "count": 5096519,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02197811585,
                "variance": 0.0004830375765
              },
              {
                "average": 1.192017924,
                "count": 5096519,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3946644639,
                "variance": 0.1557600391
              },
              {
                "average": 1.334366997,
                "count": 5096519,
                "maximum": 21.52199936,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 12.51606943,
                "variance": 156.651994
              },
              {
                "average": 0.4822882049,
                "count": 5096519,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996862429,
                "variance": 0.2496863413
              },
              {
                "average": 273.1865218,
                "count": 5096519,
                "maximum": 307,
                "minimum": 254,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 22.71749225,
                "variance": 516.0844542
              },
              {
                "average": 249073819.8,
                "count": 5096519,
                "maximum": 249075147.2,
                "minimum": 249071354.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1494.245704,
                "variance": 2232770.225
              },
              {
                "average": 0.4822882049,
                "count": 5096519,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996862429,
                "variance": 0.2496863413
              },
              {
                "average": 0,
                "count": 5096519,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5096519,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5096519,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2542052723,
                "count": 5096519,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4354135839,
                "variance": 0.189584989
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352497.7038,
              2218885.754,
              2.606334952,
              -351983.5238,
              2219388.054,
              46.24633495
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352497.7037522633,
                    2218885.7539144927,
                    2.606334952427186
                  ],
                  [
                    -352497.7037522633,
                    2219388.0539144925,
                    2.606334952427186
                  ],
                  [
                    -351983.5237522632,
                    2219388.0539144925,
                    46.24633495242719
                  ],
                  [
                    -351983.5237522632,
                    2218885.7539144927,
                    46.24633495242719
                  ],
                  [
                    -352497.7037522633,
                    2218885.7539144927,
                    2.606334952427186
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:19:07+00:00",
            "end_time": "2019-08-05T20:15:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_1NSB7_00088.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -162.98815893795444,
              69.72798559723014,
              1.486002764173445
            ],
            [
              -162.98988426518494,
              69.73251618494989,
              1.486002764173445
            ],
            [
              -162.976916257812,
              69.73314730358977,
              33.52600276417344
            ],
            [
              -162.9751933584274,
              69.72861658118738,
              33.52600276417344
            ],
            [
              -162.98815893795444,
              69.72798559723014,
              1.486002764173445
            ]
          ]
        ]
      },
      "bbox": [
        -162.9898843,
        69.7279856,
        1.486002764,
        -162.9751934,
        69.7331473,
        33.52600276
      ],
      "properties": {
        "datetime": "2019-08-05T21:21:19Z",
        "pc:count": 4174070,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -351792.7262,
            "count": 4174070,
            "maximum": -351522.4902,
            "minimum": -352036.5502,
            "name": "X",
            "position": 0,
            "stddev": 131.4208763,
            "variance": 17271.44672
          },
          {
            "average": 2219090.501,
            "count": 4174070,
            "maximum": 2219332.689,
            "minimum": 2218830.429,
            "name": "Y",
            "position": 1,
            "stddev": 129.4336143,
            "variance": 16753.06052
          },
          {
            "average": 2.604859851,
            "count": 4174070,
            "maximum": 33.52600276,
            "minimum": 1.486002764,
            "name": "Z",
            "position": 2,
            "stddev": 0.5186463246,
            "variance": 0.26899401
          },
          {
            "average": 34346.92759,
            "count": 4174070,
            "maximum": 65535,
            "minimum": 1160,
            "name": "Intensity",
            "position": 3,
            "stddev": 17557.86277,
            "variance": 308278545.2
          },
          {
            "average": 1.000001437,
            "count": 4174070,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00119893462,
            "variance": 1.437444224e-06
          },
          {
            "average": 1.000002875,
            "count": 4174070,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001695548382,
            "variance": 2.874884316e-06
          },
          {
            "average": 0.5004844193,
            "count": 4174070,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998252,
            "variance": 0.2499998252
          },
          {
            "average": 0.0004123074122,
            "count": 4174070,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02030117025,
            "variance": 0.0004121375135
          },
          {
            "average": 2.930444866,
            "count": 4174070,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.284892443,
            "variance": 10.79051836
          },
          {
            "average": 0.2337900141,
            "count": 4174070,
            "maximum": 21.34199905,
            "minimum": -20.90399933,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.16725734,
            "variance": 124.7076366
          },
          {
            "average": 0.5066218343,
            "count": 4174070,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999562093,
            "variance": 0.2499562112
          },
          {
            "average": 272.7652052,
            "count": 4174070,
            "maximum": 307,
            "minimum": 255,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 21.82925069,
            "variance": 476.5161858
          },
          {
            "average": 249074062.8,
            "count": 4174070,
            "maximum": 249075279.7,
            "minimum": 249071355,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1530.365087,
            "variance": 2342017.301
          },
          {
            "average": 0.5066218343,
            "count": 4174070,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999562093,
            "variance": 0.2499562112
          },
          {
            "average": 0,
            "count": 4174070,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4174070,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4174070,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2205882987,
            "count": 4174070,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4146433918,
            "variance": 0.1719291424
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -352036.5502,
          2218830.429,
          1.486002764,
          -351522.4902,
          2219332.689,
          33.52600276
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -352036.55023252324,
                2218830.4292608276,
                1.486002764173445
              ],
              [
                -352036.55023252324,
                2219332.6892608274,
                1.486002764173445
              ],
              [
                -351522.4902325232,
                2219332.6892608274,
                33.52600276417344
              ],
              [
                -351522.4902325232,
                2218830.4292608276,
                33.52600276417344
              ],
              [
                -352036.55023252324,
                2218830.4292608276,
                1.486002764173445
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-05T21:21:19+00:00",
        "end_time": "2019-08-05T20:15:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_10/20190805_B18_1NSB7_00088.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_1NSB7_00088.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_10/20190805_B18_1NSB7_00088.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00088.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -162.9898843,
            69.7279856,
            1.486002764,
            -162.9751934,
            69.7331473,
            33.52600276
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -162.98815893795444,
                  69.72798559723014,
                  1.486002764173445
                ],
                [
                  -162.98988426518494,
                  69.73251618494989,
                  1.486002764173445
                ],
                [
                  -162.976916257812,
                  69.73314730358977,
                  33.52600276417344
                ],
                [
                  -162.9751933584274,
                  69.72861658118738,
                  33.52600276417344
                ],
                [
                  -162.98815893795444,
                  69.72798559723014,
                  1.486002764173445
                ]
              ]
            ]
          },
          "id": "20190805_B18_1NSB7_00088.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_10/20190805_B18_1NSB7_00088.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-05T21:21:19Z",
            "pc:count": 4174070,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -351792.7262,
                "count": 4174070,
                "maximum": -351522.4902,
                "minimum": -352036.5502,
                "name": "X",
                "position": 0,
                "stddev": 131.4208763,
                "variance": 17271.44672
              },
              {
                "average": 2219090.501,
                "count": 4174070,
                "maximum": 2219332.689,
                "minimum": 2218830.429,
                "name": "Y",
                "position": 1,
                "stddev": 129.4336143,
                "variance": 16753.06052
              },
              {
                "average": 2.604859851,
                "count": 4174070,
                "maximum": 33.52600276,
                "minimum": 1.486002764,
                "name": "Z",
                "position": 2,
                "stddev": 0.5186463246,
                "variance": 0.26899401
              },
              {
                "average": 34346.92759,
                "count": 4174070,
                "maximum": 65535,
                "minimum": 1160,
                "name": "Intensity",
                "position": 3,
                "stddev": 17557.86277,
                "variance": 308278545.2
              },
              {
                "average": 1.000001437,
                "count": 4174070,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00119893462,
                "variance": 1.437444224e-06
              },
              {
                "average": 1.000002875,
                "count": 4174070,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001695548382,
                "variance": 2.874884316e-06
              },
              {
                "average": 0.5004844193,
                "count": 4174070,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998252,
                "variance": 0.2499998252
              },
              {
                "average": 0.0004123074122,
                "count": 4174070,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02030117025,
                "variance": 0.0004121375135
              },
              {
                "average": 2.930444866,
                "count": 4174070,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.284892443,
                "variance": 10.79051836
              },
              {
                "average": 0.2337900141,
                "count": 4174070,
                "maximum": 21.34199905,
                "minimum": -20.90399933,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.16725734,
                "variance": 124.7076366
              },
              {
                "average": 0.5066218343,
                "count": 4174070,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999562093,
                "variance": 0.2499562112
              },
              {
                "average": 272.7652052,
                "count": 4174070,
                "maximum": 307,
                "minimum": 255,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 21.82925069,
                "variance": 476.5161858
              },
              {
                "average": 249074062.8,
                "count": 4174070,
                "maximum": 249075279.7,
                "minimum": 249071355,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1530.365087,
                "variance": 2342017.301
              },
              {
                "average": 0.5066218343,
                "count": 4174070,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999562093,
                "variance": 0.2499562112
              },
              {
                "average": 0,
                "count": 4174070,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4174070,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4174070,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2205882987,
                "count": 4174070,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4146433918,
                "variance": 0.1719291424
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -352036.5502,
              2218830.429,
              1.486002764,
              -351522.4902,
              2219332.689,
              33.52600276
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -352036.55023252324,
                    2218830.4292608276,
                    1.486002764173445
                  ],
                  [
                    -352036.55023252324,
                    2219332.6892608274,
                    1.486002764173445
                  ],
                  [
                    -351522.4902325232,
                    2219332.6892608274,
                    33.52600276417344
                  ],
                  [
                    -351522.4902325232,
                    2218830.4292608276,
                    33.52600276417344
                  ],
                  [
                    -352036.55023252324,
                    2218830.4292608276,
                    1.486002764173445
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-05T21:21:19+00:00",
            "end_time": "2019-08-05T20:15:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0821.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.04299728139762,
              70.63834449518174,
              -7.4433757454675
            ],
            [
              -160.0441164480789,
              70.64258377907757,
              -7.4433757454675
            ],
            [
              -160.03044258764098,
              70.64301460690604,
              22.976624254532503
            ],
            [
              -160.0293259249759,
              70.63877523256292,
              22.976624254532503
            ],
            [
              -160.04299728139762,
              70.63834449518174,
              -7.4433757454675
            ]
          ]
        ]
      },
      "bbox": [
        -160.0441164,
        70.6383445,
        -7.443375745,
        -160.0293259,
        70.64301461,
        22.97662425
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:42Z",
        "pc:count": 3059661,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227687.806,
            "count": 3059661,
            "maximum": -227497.2721,
            "minimum": -228015.9721,
            "name": "X",
            "position": 0,
            "stddev": 116.9519146,
            "variance": 13677.75032
          },
          {
            "average": 2305309.189,
            "count": 3059661,
            "maximum": 2305576.983,
            "minimum": 2305111.703,
            "name": "Y",
            "position": 1,
            "stddev": 113.1370746,
            "variance": 12799.99765
          },
          {
            "average": 4.148212852,
            "count": 3059661,
            "maximum": 22.97662425,
            "minimum": -7.443375745,
            "name": "Z",
            "position": 2,
            "stddev": 3.464087652,
            "variance": 11.99990326
          },
          {
            "average": 22298.07977,
            "count": 3059661,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14433.14127,
            "variance": 208315566.9
          },
          {
            "average": 1.006031387,
            "count": 3059661,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07906070718,
            "variance": 0.00625059542
          },
          {
            "average": 1.01206833,
            "count": 3059661,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.112650323,
            "variance": 0.01269009527
          },
          {
            "average": 0.4956294178,
            "count": 3059661,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999809794,
            "variance": 0.2499809797
          },
          {
            "average": 0.0003781464679,
            "count": 3059661,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01944231459,
            "variance": 0.0003780035967
          },
          {
            "average": 3.842097866,
            "count": 3059661,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.555164868,
            "variance": 12.63919724
          },
          {
            "average": 2.85177442,
            "count": 3059661,
            "maximum": 21.34799957,
            "minimum": -16.22999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.844097793,
            "variance": 96.90626137
          },
          {
            "average": 0.4828616634,
            "count": 3059661,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997062728,
            "variance": 0.249706359
          },
          {
            "average": 599.9281934,
            "count": 3059661,
            "maximum": 751,
            "minimum": 552,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 83.2195243,
            "variance": 6925.489225
          },
          {
            "average": 220904158.7,
            "count": 3059661,
            "maximum": 222303722,
            "minimum": 220475401.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 774245.6711,
            "variance": 599456359200.0
          },
          {
            "average": 0.4828616634,
            "count": 3059661,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997062728,
            "variance": 0.249706359
          },
          {
            "average": 0,
            "count": 3059661,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3059661,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3059661,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1372612848,
            "count": 3059661,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.344123035,
            "variance": 0.1184206632
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228015.9721,
          2305111.703,
          -7.443375745,
          -227497.2721,
          2305576.983,
          22.97662425
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228015.97211219757,
                2305111.702672835,
                -7.4433757454675
              ],
              [
                -228015.97211219757,
                2305576.9826728352,
                -7.4433757454675
              ],
              [
                -227497.27211219756,
                2305576.9826728352,
                22.976624254532503
              ],
              [
                -227497.27211219756,
                2305111.702672835,
                22.976624254532503
              ],
              [
                -228015.97211219757,
                2305111.702672835,
                -7.4433757454675
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:42+00:00",
        "end_time": "2018-09-08T20:56:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0821.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0821.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0821.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0821.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0441164,
            70.6383445,
            -7.443375745,
            -160.0293259,
            70.64301461,
            22.97662425
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.04299728139762,
                  70.63834449518174,
                  -7.4433757454675
                ],
                [
                  -160.0441164480789,
                  70.64258377907757,
                  -7.4433757454675
                ],
                [
                  -160.03044258764098,
                  70.64301460690604,
                  22.976624254532503
                ],
                [
                  -160.0293259249759,
                  70.63877523256292,
                  22.976624254532503
                ],
                [
                  -160.04299728139762,
                  70.63834449518174,
                  -7.4433757454675
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0821.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0821.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:42Z",
            "pc:count": 3059661,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227687.806,
                "count": 3059661,
                "maximum": -227497.2721,
                "minimum": -228015.9721,
                "name": "X",
                "position": 0,
                "stddev": 116.9519146,
                "variance": 13677.75032
              },
              {
                "average": 2305309.189,
                "count": 3059661,
                "maximum": 2305576.983,
                "minimum": 2305111.703,
                "name": "Y",
                "position": 1,
                "stddev": 113.1370746,
                "variance": 12799.99765
              },
              {
                "average": 4.148212852,
                "count": 3059661,
                "maximum": 22.97662425,
                "minimum": -7.443375745,
                "name": "Z",
                "position": 2,
                "stddev": 3.464087652,
                "variance": 11.99990326
              },
              {
                "average": 22298.07977,
                "count": 3059661,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14433.14127,
                "variance": 208315566.9
              },
              {
                "average": 1.006031387,
                "count": 3059661,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07906070718,
                "variance": 0.00625059542
              },
              {
                "average": 1.01206833,
                "count": 3059661,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.112650323,
                "variance": 0.01269009527
              },
              {
                "average": 0.4956294178,
                "count": 3059661,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999809794,
                "variance": 0.2499809797
              },
              {
                "average": 0.0003781464679,
                "count": 3059661,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01944231459,
                "variance": 0.0003780035967
              },
              {
                "average": 3.842097866,
                "count": 3059661,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.555164868,
                "variance": 12.63919724
              },
              {
                "average": 2.85177442,
                "count": 3059661,
                "maximum": 21.34799957,
                "minimum": -16.22999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.844097793,
                "variance": 96.90626137
              },
              {
                "average": 0.4828616634,
                "count": 3059661,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997062728,
                "variance": 0.249706359
              },
              {
                "average": 599.9281934,
                "count": 3059661,
                "maximum": 751,
                "minimum": 552,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 83.2195243,
                "variance": 6925.489225
              },
              {
                "average": 220904158.7,
                "count": 3059661,
                "maximum": 222303722,
                "minimum": 220475401.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 774245.6711,
                "variance": 599456359200.0
              },
              {
                "average": 0.4828616634,
                "count": 3059661,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997062728,
                "variance": 0.249706359
              },
              {
                "average": 0,
                "count": 3059661,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3059661,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3059661,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1372612848,
                "count": 3059661,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.344123035,
                "variance": 0.1184206632
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228015.9721,
              2305111.703,
              -7.443375745,
              -227497.2721,
              2305576.983,
              22.97662425
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228015.97211219757,
                    2305111.702672835,
                    -7.4433757454675
                  ],
                  [
                    -228015.97211219757,
                    2305576.9826728352,
                    -7.4433757454675
                  ],
                  [
                    -227497.27211219756,
                    2305576.9826728352,
                    22.976624254532503
                  ],
                  [
                    -227497.27211219756,
                    2305111.702672835,
                    22.976624254532503
                  ],
                  [
                    -228015.97211219757,
                    2305111.702672835,
                    -7.4433757454675
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:42+00:00",
            "end_time": "2018-09-08T20:56:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0874.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.96810270943334,
              70.64572834761141,
              11.621834952144408
            ],
            [
              -159.96929349079187,
              70.65029448676597,
              11.621834952144408
            ],
            [
              -159.95561047603502,
              70.65072010728178,
              16.541834952144406
            ],
            [
              -159.9544223948685,
              70.64615387184381,
              16.541834952144406
            ],
            [
              -159.96810270943334,
              70.64572834761141,
              11.621834952144408
            ]
          ]
        ]
      },
      "bbox": [
        -159.9692935,
        70.64572835,
        11.62183495,
        -159.9544224,
        70.65072011,
        16.54183495
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:31Z",
        "pc:count": 5704896,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -224851.641,
            "count": 5704896,
            "maximum": -224606.4409,
            "minimum": -225125.2609,
            "name": "X",
            "position": 0,
            "stddev": 136.6994786,
            "variance": 18686.74745
          },
          {
            "average": 2305907.955,
            "count": 5704896,
            "maximum": 2306161.021,
            "minimum": 2305659.941,
            "name": "Y",
            "position": 1,
            "stddev": 129.6792629,
            "variance": 16816.71123
          },
          {
            "average": 12.69637719,
            "count": 5704896,
            "maximum": 16.54183495,
            "minimum": 11.62183495,
            "name": "Z",
            "position": 2,
            "stddev": 0.7275868151,
            "variance": 0.5293825734
          },
          {
            "average": 41174.33253,
            "count": 5704896,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 12306.75965,
            "variance": 151456333
          },
          {
            "average": 1,
            "count": 5704896,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5704896,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5001901875,
            "count": 5704896,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000077,
            "variance": 0.2500000077
          },
          {
            "average": 0.0002394434535,
            "count": 5704896,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01547210917,
            "variance": 0.0002393861623
          },
          {
            "average": 1.163422085,
            "count": 5704896,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3699849543,
            "variance": 0.1368888664
          },
          {
            "average": 1.730052932,
            "count": 5704896,
            "maximum": 21.34199905,
            "minimum": -15.88199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.68584443,
            "variance": 114.1872713
          },
          {
            "average": 0.5193114826,
            "count": 5704896,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996269712,
            "variance": 0.2496271104
          },
          {
            "average": 587.1918419,
            "count": 5704896,
            "maximum": 753,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 76.68038242,
            "variance": 5879.881048
          },
          {
            "average": 220799757.2,
            "count": 5704896,
            "maximum": 222304611.7,
            "minimum": 220475012,
            "name": "GpsTime",
            "position": 12,
            "stddev": 698652.5348,
            "variance": 488115364400.0
          },
          {
            "average": 0.5193114826,
            "count": 5704896,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996269712,
            "variance": 0.2496271104
          },
          {
            "average": 0,
            "count": 5704896,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5704896,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5704896,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2238484277,
            "count": 5704896,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.416821712,
            "variance": 0.1737403396
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225125.2609,
          2305659.941,
          11.62183495,
          -224606.4409,
          2306161.021,
          16.54183495
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225125.26091343994,
                2305659.941103366,
                11.621834952144408
              ],
              [
                -225125.26091343994,
                2306161.0211033663,
                11.621834952144408
              ],
              [
                -224606.44091343993,
                2306161.0211033663,
                16.541834952144406
              ],
              [
                -224606.44091343993,
                2305659.941103366,
                16.541834952144406
              ],
              [
                -225125.26091343994,
                2305659.941103366,
                11.621834952144408
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:31+00:00",
        "end_time": "2018-09-08T20:50:12+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0874.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0874.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0874.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0874.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9692935,
            70.64572835,
            11.62183495,
            -159.9544224,
            70.65072011,
            16.54183495
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.96810270943334,
                  70.64572834761141,
                  11.621834952144408
                ],
                [
                  -159.96929349079187,
                  70.65029448676597,
                  11.621834952144408
                ],
                [
                  -159.95561047603502,
                  70.65072010728178,
                  16.541834952144406
                ],
                [
                  -159.9544223948685,
                  70.64615387184381,
                  16.541834952144406
                ],
                [
                  -159.96810270943334,
                  70.64572834761141,
                  11.621834952144408
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0874.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0874.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:31Z",
            "pc:count": 5704896,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -224851.641,
                "count": 5704896,
                "maximum": -224606.4409,
                "minimum": -225125.2609,
                "name": "X",
                "position": 0,
                "stddev": 136.6994786,
                "variance": 18686.74745
              },
              {
                "average": 2305907.955,
                "count": 5704896,
                "maximum": 2306161.021,
                "minimum": 2305659.941,
                "name": "Y",
                "position": 1,
                "stddev": 129.6792629,
                "variance": 16816.71123
              },
              {
                "average": 12.69637719,
                "count": 5704896,
                "maximum": 16.54183495,
                "minimum": 11.62183495,
                "name": "Z",
                "position": 2,
                "stddev": 0.7275868151,
                "variance": 0.5293825734
              },
              {
                "average": 41174.33253,
                "count": 5704896,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 12306.75965,
                "variance": 151456333
              },
              {
                "average": 1,
                "count": 5704896,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5704896,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5001901875,
                "count": 5704896,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000077,
                "variance": 0.2500000077
              },
              {
                "average": 0.0002394434535,
                "count": 5704896,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01547210917,
                "variance": 0.0002393861623
              },
              {
                "average": 1.163422085,
                "count": 5704896,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3699849543,
                "variance": 0.1368888664
              },
              {
                "average": 1.730052932,
                "count": 5704896,
                "maximum": 21.34199905,
                "minimum": -15.88199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.68584443,
                "variance": 114.1872713
              },
              {
                "average": 0.5193114826,
                "count": 5704896,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996269712,
                "variance": 0.2496271104
              },
              {
                "average": 587.1918419,
                "count": 5704896,
                "maximum": 753,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 76.68038242,
                "variance": 5879.881048
              },
              {
                "average": 220799757.2,
                "count": 5704896,
                "maximum": 222304611.7,
                "minimum": 220475012,
                "name": "GpsTime",
                "position": 12,
                "stddev": 698652.5348,
                "variance": 488115364400.0
              },
              {
                "average": 0.5193114826,
                "count": 5704896,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996269712,
                "variance": 0.2496271104
              },
              {
                "average": 0,
                "count": 5704896,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5704896,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5704896,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2238484277,
                "count": 5704896,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.416821712,
                "variance": 0.1737403396
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225125.2609,
              2305659.941,
              11.62183495,
              -224606.4409,
              2306161.021,
              16.54183495
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225125.26091343994,
                    2305659.941103366,
                    11.621834952144408
                  ],
                  [
                    -225125.26091343994,
                    2306161.0211033663,
                    11.621834952144408
                  ],
                  [
                    -224606.44091343993,
                    2306161.0211033663,
                    16.541834952144406
                  ],
                  [
                    -224606.44091343993,
                    2305659.941103366,
                    16.541834952144406
                  ],
                  [
                    -225125.26091343994,
                    2305659.941103366,
                    11.621834952144408
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:31+00:00",
            "end_time": "2018-09-08T20:50:12+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0822.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.03065211445715,
              70.63821225108363,
              -10.942637123863443
            ],
            [
              -160.03185494778276,
              70.64277779579076,
              -10.942637123863443
            ],
            [
              -160.0181791603351,
              70.64320780119033,
              35.29736287613656
            ],
            [
              -160.01697902419468,
              70.63864215926154,
              35.29736287613656
            ],
            [
              -160.03065211445715,
              70.63821225108363,
              -10.942637123863443
            ]
          ]
        ]
      },
      "bbox": [
        -160.0318549,
        70.63821225,
        -10.94263712,
        -160.016979,
        70.6432078,
        35.29736288
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:46Z",
        "pc:count": 5734934,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227293.6278,
            "count": 5734934,
            "maximum": -227033.9942,
            "minimum": -227552.7542,
            "name": "X",
            "position": 0,
            "stddev": 136.6296262,
            "variance": 18667.65477
          },
          {
            "average": 2305311.574,
            "count": 5734934,
            "maximum": 2305556.045,
            "minimum": 2305054.965,
            "name": "Y",
            "position": 1,
            "stddev": 127.012805,
            "variance": 16132.25264
          },
          {
            "average": 11.6059075,
            "count": 5734934,
            "maximum": 35.29736288,
            "minimum": -10.94263712,
            "name": "Z",
            "position": 2,
            "stddev": 3.43923382,
            "variance": 11.82832927
          },
          {
            "average": 36446.14526,
            "count": 5734934,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13395.31036,
            "variance": 179434339.5
          },
          {
            "average": 1.018860548,
            "count": 5734934,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.138788668,
            "variance": 0.01926229437
          },
          {
            "average": 1.037714471,
            "count": 5734934,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1963704312,
            "variance": 0.03856134625
          },
          {
            "average": 0.4951380434,
            "count": 5734934,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999764044,
            "variance": 0.249976405
          },
          {
            "average": 0.0002617292544,
            "count": 5734934,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01617593267,
            "variance": 0.0002616607978
          },
          {
            "average": 1.575484217,
            "count": 5734934,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.262793947,
            "variance": 1.594648553
          },
          {
            "average": 4.024651486,
            "count": 5734934,
            "maximum": 21.35400009,
            "minimum": -16.34399986,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.99421353,
            "variance": 120.8727311
          },
          {
            "average": 0.4980332816,
            "count": 5734934,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999961756,
            "variance": 0.2499961756
          },
          {
            "average": 603.6051829,
            "count": 5734934,
            "maximum": 751,
            "minimum": 552,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 85.45974464,
            "variance": 7303.367954
          },
          {
            "average": 220937835.4,
            "count": 5734934,
            "maximum": 222303726.7,
            "minimum": 220475396.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 794388.0983,
            "variance": 631052450800.0
          },
          {
            "average": 0.4980332816,
            "count": 5734934,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999961756,
            "variance": 0.2499961756
          },
          {
            "average": 0,
            "count": 5734934,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5734934,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5734934,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.241627541,
            "count": 5734934,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4280697424,
            "variance": 0.1832437044
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227552.7542,
          2305054.965,
          -10.94263712,
          -227033.9942,
          2305556.045,
          35.29736288
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227552.754180985,
                2305054.964960044,
                -10.942637123863443
              ],
              [
                -227552.754180985,
                2305556.044960044,
                -10.942637123863443
              ],
              [
                -227033.994180985,
                2305556.044960044,
                35.29736287613656
              ],
              [
                -227033.994180985,
                2305054.964960044,
                35.29736287613656
              ],
              [
                -227552.754180985,
                2305054.964960044,
                -10.942637123863443
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:46+00:00",
        "end_time": "2018-09-08T20:56:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0822.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0822.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0822.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0822.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0318549,
            70.63821225,
            -10.94263712,
            -160.016979,
            70.6432078,
            35.29736288
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.03065211445715,
                  70.63821225108363,
                  -10.942637123863443
                ],
                [
                  -160.03185494778276,
                  70.64277779579076,
                  -10.942637123863443
                ],
                [
                  -160.0181791603351,
                  70.64320780119033,
                  35.29736287613656
                ],
                [
                  -160.01697902419468,
                  70.63864215926154,
                  35.29736287613656
                ],
                [
                  -160.03065211445715,
                  70.63821225108363,
                  -10.942637123863443
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0822.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0822.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:46Z",
            "pc:count": 5734934,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227293.6278,
                "count": 5734934,
                "maximum": -227033.9942,
                "minimum": -227552.7542,
                "name": "X",
                "position": 0,
                "stddev": 136.6296262,
                "variance": 18667.65477
              },
              {
                "average": 2305311.574,
                "count": 5734934,
                "maximum": 2305556.045,
                "minimum": 2305054.965,
                "name": "Y",
                "position": 1,
                "stddev": 127.012805,
                "variance": 16132.25264
              },
              {
                "average": 11.6059075,
                "count": 5734934,
                "maximum": 35.29736288,
                "minimum": -10.94263712,
                "name": "Z",
                "position": 2,
                "stddev": 3.43923382,
                "variance": 11.82832927
              },
              {
                "average": 36446.14526,
                "count": 5734934,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13395.31036,
                "variance": 179434339.5
              },
              {
                "average": 1.018860548,
                "count": 5734934,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.138788668,
                "variance": 0.01926229437
              },
              {
                "average": 1.037714471,
                "count": 5734934,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1963704312,
                "variance": 0.03856134625
              },
              {
                "average": 0.4951380434,
                "count": 5734934,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999764044,
                "variance": 0.249976405
              },
              {
                "average": 0.0002617292544,
                "count": 5734934,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01617593267,
                "variance": 0.0002616607978
              },
              {
                "average": 1.575484217,
                "count": 5734934,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.262793947,
                "variance": 1.594648553
              },
              {
                "average": 4.024651486,
                "count": 5734934,
                "maximum": 21.35400009,
                "minimum": -16.34399986,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.99421353,
                "variance": 120.8727311
              },
              {
                "average": 0.4980332816,
                "count": 5734934,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999961756,
                "variance": 0.2499961756
              },
              {
                "average": 603.6051829,
                "count": 5734934,
                "maximum": 751,
                "minimum": 552,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 85.45974464,
                "variance": 7303.367954
              },
              {
                "average": 220937835.4,
                "count": 5734934,
                "maximum": 222303726.7,
                "minimum": 220475396.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 794388.0983,
                "variance": 631052450800.0
              },
              {
                "average": 0.4980332816,
                "count": 5734934,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999961756,
                "variance": 0.2499961756
              },
              {
                "average": 0,
                "count": 5734934,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5734934,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5734934,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.241627541,
                "count": 5734934,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4280697424,
                "variance": 0.1832437044
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227552.7542,
              2305054.965,
              -10.94263712,
              -227033.9942,
              2305556.045,
              35.29736288
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227552.754180985,
                    2305054.964960044,
                    -10.942637123863443
                  ],
                  [
                    -227552.754180985,
                    2305556.044960044,
                    -10.942637123863443
                  ],
                  [
                    -227033.994180985,
                    2305556.044960044,
                    35.29736287613656
                  ],
                  [
                    -227033.994180985,
                    2305054.964960044,
                    35.29736287613656
                  ],
                  [
                    -227552.754180985,
                    2305054.964960044,
                    -10.942637123863443
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:46+00:00",
            "end_time": "2018-09-08T20:56:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0799.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.00636844413006,
              70.63384869344111,
              4.886333631494269
            ],
            [
              -160.0075664108064,
              70.63841500004538,
              4.886333631494269
            ],
            [
              -159.99389118725807,
              70.63884331510893,
              17.346333631494268
            ],
            [
              -159.9926959178451,
              70.63427691167267,
              17.346333631494268
            ],
            [
              -160.00636844413006,
              70.63384869344111,
              4.886333631494269
            ]
          ]
        ]
      },
      "bbox": [
        -160.0075664,
        70.63384869,
        4.886333631,
        -159.9926959,
        70.63884332,
        17.34633363
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:01Z",
        "pc:count": 5879519,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226422.1914,
            "count": 5879519,
            "maximum": -226163.2284,
            "minimum": -226682.0484,
            "name": "X",
            "position": 0,
            "stddev": 138.6418771,
            "variance": 19221.57009
          },
          {
            "average": 2304753.083,
            "count": 5879519,
            "maximum": 2304998.085,
            "minimum": 2304496.925,
            "name": "Y",
            "position": 1,
            "stddev": 128.0909054,
            "variance": 16407.28004
          },
          {
            "average": 11.03428685,
            "count": 5879519,
            "maximum": 17.34633363,
            "minimum": 4.886333631,
            "name": "Z",
            "position": 2,
            "stddev": 1.547166778,
            "variance": 2.393725038
          },
          {
            "average": 42395.17051,
            "count": 5879519,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 10096.39444,
            "variance": 101937180.6
          },
          {
            "average": 1.000215154,
            "count": 5879519,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01478205126,
            "variance": 0.0002185090395
          },
          {
            "average": 1.000430818,
            "count": 5879519,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02099611732,
            "variance": 0.0004408369426
          },
          {
            "average": 0.5034003632,
            "count": 5879519,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999884799,
            "variance": 0.24998848
          },
          {
            "average": 0.0002740020059,
            "count": 5879519,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01655073942,
            "variance": 0.0002739269754
          },
          {
            "average": 1.220364965,
            "count": 5879519,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4190601286,
            "variance": 0.1756113914
          },
          {
            "average": -1.445426841,
            "count": 5879519,
            "maximum": 16.63199997,
            "minimum": -20.74799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44051783,
            "variance": 109.0044126
          },
          {
            "average": 0.4800999878,
            "count": 5879519,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996038751,
            "variance": 0.249604032
          },
          {
            "average": 590.4140915,
            "count": 5879519,
            "maximum": 752,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 74.37812515,
            "variance": 5532.105501
          },
          {
            "average": 220796634.5,
            "count": 5879519,
            "maximum": 222304101.8,
            "minimum": 220475762.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 695009.4814,
            "variance": 483038179300.0
          },
          {
            "average": 0.4800999878,
            "count": 5879519,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996038751,
            "variance": 0.249604032
          },
          {
            "average": 0,
            "count": 5879519,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5879519,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5879519,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2390853742,
            "count": 5879519,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4265250156,
            "variance": 0.181923589
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226682.0484,
          2304496.925,
          4.886333631,
          -226163.2284,
          2304998.085,
          17.34633363
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226682.04837203823,
                2304496.924610803,
                4.886333631494269
              ],
              [
                -226682.04837203823,
                2304998.084610803,
                4.886333631494269
              ],
              [
                -226163.22837203823,
                2304998.084610803,
                17.346333631494268
              ],
              [
                -226163.22837203823,
                2304496.924610803,
                17.346333631494268
              ],
              [
                -226682.04837203823,
                2304496.924610803,
                4.886333631494269
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:01+00:00",
        "end_time": "2018-09-08T21:02:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0799.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0799.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0799.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0799.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0075664,
            70.63384869,
            4.886333631,
            -159.9926959,
            70.63884332,
            17.34633363
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.00636844413006,
                  70.63384869344111,
                  4.886333631494269
                ],
                [
                  -160.0075664108064,
                  70.63841500004538,
                  4.886333631494269
                ],
                [
                  -159.99389118725807,
                  70.63884331510893,
                  17.346333631494268
                ],
                [
                  -159.9926959178451,
                  70.63427691167267,
                  17.346333631494268
                ],
                [
                  -160.00636844413006,
                  70.63384869344111,
                  4.886333631494269
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0799.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0799.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:01Z",
            "pc:count": 5879519,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226422.1914,
                "count": 5879519,
                "maximum": -226163.2284,
                "minimum": -226682.0484,
                "name": "X",
                "position": 0,
                "stddev": 138.6418771,
                "variance": 19221.57009
              },
              {
                "average": 2304753.083,
                "count": 5879519,
                "maximum": 2304998.085,
                "minimum": 2304496.925,
                "name": "Y",
                "position": 1,
                "stddev": 128.0909054,
                "variance": 16407.28004
              },
              {
                "average": 11.03428685,
                "count": 5879519,
                "maximum": 17.34633363,
                "minimum": 4.886333631,
                "name": "Z",
                "position": 2,
                "stddev": 1.547166778,
                "variance": 2.393725038
              },
              {
                "average": 42395.17051,
                "count": 5879519,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 10096.39444,
                "variance": 101937180.6
              },
              {
                "average": 1.000215154,
                "count": 5879519,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01478205126,
                "variance": 0.0002185090395
              },
              {
                "average": 1.000430818,
                "count": 5879519,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02099611732,
                "variance": 0.0004408369426
              },
              {
                "average": 0.5034003632,
                "count": 5879519,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999884799,
                "variance": 0.24998848
              },
              {
                "average": 0.0002740020059,
                "count": 5879519,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01655073942,
                "variance": 0.0002739269754
              },
              {
                "average": 1.220364965,
                "count": 5879519,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4190601286,
                "variance": 0.1756113914
              },
              {
                "average": -1.445426841,
                "count": 5879519,
                "maximum": 16.63199997,
                "minimum": -20.74799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44051783,
                "variance": 109.0044126
              },
              {
                "average": 0.4800999878,
                "count": 5879519,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996038751,
                "variance": 0.249604032
              },
              {
                "average": 590.4140915,
                "count": 5879519,
                "maximum": 752,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 74.37812515,
                "variance": 5532.105501
              },
              {
                "average": 220796634.5,
                "count": 5879519,
                "maximum": 222304101.8,
                "minimum": 220475762.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 695009.4814,
                "variance": 483038179300.0
              },
              {
                "average": 0.4800999878,
                "count": 5879519,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996038751,
                "variance": 0.249604032
              },
              {
                "average": 0,
                "count": 5879519,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5879519,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5879519,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2390853742,
                "count": 5879519,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4265250156,
                "variance": 0.181923589
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226682.0484,
              2304496.925,
              4.886333631,
              -226163.2284,
              2304998.085,
              17.34633363
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226682.04837203823,
                    2304496.924610803,
                    4.886333631494269
                  ],
                  [
                    -226682.04837203823,
                    2304998.084610803,
                    4.886333631494269
                  ],
                  [
                    -226163.22837203823,
                    2304998.084610803,
                    17.346333631494268
                  ],
                  [
                    -226163.22837203823,
                    2304496.924610803,
                    17.346333631494268
                  ],
                  [
                    -226682.04837203823,
                    2304496.924610803,
                    4.886333631494269
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:01+00:00",
            "end_time": "2018-09-08T21:02:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0823.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.01830657354108,
              70.6380787552097,
              -0.155974270773495
            ],
            [
              -160.01950699220285,
              70.64264455573547,
              -0.155974270773495
            ],
            [
              -160.00583052605,
              70.64307369845116,
              29.404025729226507
            ],
            [
              -160.0046328049374,
              70.6385078008941,
              29.404025729226507
            ],
            [
              -160.01830657354108,
              70.6380787552097,
              -0.155974270773495
            ]
          ]
        ]
      },
      "bbox": [
        -160.019507,
        70.63807876,
        -0.1559742708,
        -160.0046328,
        70.6430737,
        29.40402573
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:58Z",
        "pc:count": 5800088,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226828.8613,
            "count": 5800088,
            "maximum": -226570.7413,
            "minimum": -227089.5213,
            "name": "X",
            "position": 0,
            "stddev": 135.3726147,
            "variance": 18325.74481
          },
          {
            "average": 2305242.646,
            "count": 5800088,
            "maximum": 2305499.276,
            "minimum": 2304998.176,
            "name": "Y",
            "position": 1,
            "stddev": 129.3810374,
            "variance": 16739.45284
          },
          {
            "average": 15.28495762,
            "count": 5800088,
            "maximum": 29.40402573,
            "minimum": -0.1559742708,
            "name": "Z",
            "position": 2,
            "stddev": 1.628436651,
            "variance": 2.651805925
          },
          {
            "average": 40618.67921,
            "count": 5800088,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11232.05764,
            "variance": 126159118.9
          },
          {
            "average": 1.005744051,
            "count": 5800088,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07696183099,
            "variance": 0.00592312343
          },
          {
            "average": 1.011460688,
            "count": 5800088,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1093918397,
            "variance": 0.01196657458
          },
          {
            "average": 0.500144653,
            "count": 5800088,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000222,
            "variance": 0.2500000222
          },
          {
            "average": 0.000251030674,
            "count": 5800088,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01584196013,
            "variance": 0.0002509677009
          },
          {
            "average": 1.276377703,
            "count": 5800088,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5691274653,
            "variance": 0.3239060718
          },
          {
            "average": -0.2377038752,
            "count": 5800088,
            "maximum": 21.28800011,
            "minimum": -20.71800041,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.23559104,
            "variance": 104.7673239
          },
          {
            "average": 0.4995820753,
            "count": 5800088,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999998684,
            "variance": 0.2499998684
          },
          {
            "average": 585.9326065,
            "count": 5800088,
            "maximum": 752,
            "minimum": 552,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 72.41740789,
            "variance": 5244.280965
          },
          {
            "average": 220770351,
            "count": 5800088,
            "maximum": 222304098.2,
            "minimum": 220475388.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 672061.0814,
            "variance": 451666097100.0
          },
          {
            "average": 0.4995820753,
            "count": 5800088,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999998684,
            "variance": 0.2499998684
          },
          {
            "average": 0,
            "count": 5800088,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5800088,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5800088,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.230099095,
            "count": 5800088,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.420896106,
            "variance": 0.177153532
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227089.5213,
          2304998.176,
          -0.1559742708,
          -226570.7413,
          2305499.276,
          29.40402573
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227089.5213453685,
                2304998.175562458,
                -0.155974270773495
              ],
              [
                -227089.5213453685,
                2305499.2755624577,
                -0.155974270773495
              ],
              [
                -226570.74134536847,
                2305499.2755624577,
                29.404025729226507
              ],
              [
                -226570.74134536847,
                2304998.175562458,
                29.404025729226507
              ],
              [
                -227089.5213453685,
                2304998.175562458,
                -0.155974270773495
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:58+00:00",
        "end_time": "2018-09-08T20:56:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0823.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0823.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0823.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0823.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.019507,
            70.63807876,
            -0.1559742708,
            -160.0046328,
            70.6430737,
            29.40402573
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.01830657354108,
                  70.6380787552097,
                  -0.155974270773495
                ],
                [
                  -160.01950699220285,
                  70.64264455573547,
                  -0.155974270773495
                ],
                [
                  -160.00583052605,
                  70.64307369845116,
                  29.404025729226507
                ],
                [
                  -160.0046328049374,
                  70.6385078008941,
                  29.404025729226507
                ],
                [
                  -160.01830657354108,
                  70.6380787552097,
                  -0.155974270773495
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0823.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0823.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:58Z",
            "pc:count": 5800088,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226828.8613,
                "count": 5800088,
                "maximum": -226570.7413,
                "minimum": -227089.5213,
                "name": "X",
                "position": 0,
                "stddev": 135.3726147,
                "variance": 18325.74481
              },
              {
                "average": 2305242.646,
                "count": 5800088,
                "maximum": 2305499.276,
                "minimum": 2304998.176,
                "name": "Y",
                "position": 1,
                "stddev": 129.3810374,
                "variance": 16739.45284
              },
              {
                "average": 15.28495762,
                "count": 5800088,
                "maximum": 29.40402573,
                "minimum": -0.1559742708,
                "name": "Z",
                "position": 2,
                "stddev": 1.628436651,
                "variance": 2.651805925
              },
              {
                "average": 40618.67921,
                "count": 5800088,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11232.05764,
                "variance": 126159118.9
              },
              {
                "average": 1.005744051,
                "count": 5800088,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07696183099,
                "variance": 0.00592312343
              },
              {
                "average": 1.011460688,
                "count": 5800088,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1093918397,
                "variance": 0.01196657458
              },
              {
                "average": 0.500144653,
                "count": 5800088,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000222,
                "variance": 0.2500000222
              },
              {
                "average": 0.000251030674,
                "count": 5800088,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01584196013,
                "variance": 0.0002509677009
              },
              {
                "average": 1.276377703,
                "count": 5800088,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5691274653,
                "variance": 0.3239060718
              },
              {
                "average": -0.2377038752,
                "count": 5800088,
                "maximum": 21.28800011,
                "minimum": -20.71800041,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.23559104,
                "variance": 104.7673239
              },
              {
                "average": 0.4995820753,
                "count": 5800088,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999998684,
                "variance": 0.2499998684
              },
              {
                "average": 585.9326065,
                "count": 5800088,
                "maximum": 752,
                "minimum": 552,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 72.41740789,
                "variance": 5244.280965
              },
              {
                "average": 220770351,
                "count": 5800088,
                "maximum": 222304098.2,
                "minimum": 220475388.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 672061.0814,
                "variance": 451666097100.0
              },
              {
                "average": 0.4995820753,
                "count": 5800088,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999998684,
                "variance": 0.2499998684
              },
              {
                "average": 0,
                "count": 5800088,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5800088,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5800088,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.230099095,
                "count": 5800088,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.420896106,
                "variance": 0.177153532
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227089.5213,
              2304998.176,
              -0.1559742708,
              -226570.7413,
              2305499.276,
              29.40402573
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227089.5213453685,
                    2304998.175562458,
                    -0.155974270773495
                  ],
                  [
                    -227089.5213453685,
                    2305499.2755624577,
                    -0.155974270773495
                  ],
                  [
                    -226570.74134536847,
                    2305499.2755624577,
                    29.404025729226507
                  ],
                  [
                    -226570.74134536847,
                    2304998.175562458,
                    29.404025729226507
                  ],
                  [
                    -227089.5213453685,
                    2304998.175562458,
                    -0.155974270773495
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:58+00:00",
            "end_time": "2018-09-08T20:56:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0845.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.03488862980296,
              70.64268450495649,
              1.110768768200671
            ],
            [
              -160.03544876776363,
              70.64480895082816,
              1.110768768200671
            ],
            [
              -160.03018011505534,
              70.6449748158888,
              2.19076876820067
            ],
            [
              -160.02962046067904,
              70.64285035256307,
              2.19076876820067
            ],
            [
              -160.03488862980296,
              70.64268450495649,
              1.110768768200671
            ]
          ]
        ]
      },
      "bbox": [
        -160.0354488,
        70.6426845,
        1.110768768,
        -160.0296205,
        70.64497482,
        2.190768768
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:42Z",
        "pc:count": 310895,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227545.8756,
            "count": 310895,
            "maximum": -227467.9705,
            "minimum": -227667.8105,
            "name": "X",
            "position": 0,
            "stddev": 44.03468976,
            "variance": 1939.053902
          },
          {
            "average": 2305639.646,
            "count": 310895,
            "maximum": 2305789.448,
            "minimum": 2305556.288,
            "name": "Y",
            "position": 1,
            "stddev": 52.10354358,
            "variance": 2714.779254
          },
          {
            "average": 1.534092366,
            "count": 310895,
            "maximum": 2.190768768,
            "minimum": 1.110768768,
            "name": "Z",
            "position": 2,
            "stddev": 0.1224620518,
            "variance": 0.01499695414
          },
          {
            "average": 15762.79354,
            "count": 310895,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 12064.17514,
            "variance": 145544321.9
          },
          {
            "average": 1,
            "count": 310895,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 310895,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4908184435,
            "count": 310895,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999164959,
            "variance": 0.2499165029
          },
          {
            "average": 0.0003216520047,
            "count": 310895,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01793180356,
            "variance": 0.000321549579
          },
          {
            "average": 5.994162016,
            "count": 310895,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.618302958,
            "variance": 13.0921163
          },
          {
            "average": 4.01485966,
            "count": 310895,
            "maximum": 21.27599907,
            "minimum": -16.31399918,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.792597424,
            "variance": 33.55418492
          },
          {
            "average": 0.4830827128,
            "count": 310895,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997145271,
            "variance": 0.2497146086
          },
          {
            "average": 595.522781,
            "count": 310895,
            "maximum": 751,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 81.34601022,
            "variance": 6617.173379
          },
          {
            "average": 220872288.4,
            "count": 310895,
            "maximum": 222303722.9,
            "minimum": 220475194.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 753503.4365,
            "variance": 567767428800.0
          },
          {
            "average": 0.4830827128,
            "count": 310895,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997145271,
            "variance": 0.2497146086
          },
          {
            "average": 0,
            "count": 310895,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 310895,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 310895,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03847922932,
            "count": 310895,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1923504542,
            "variance": 0.03699869724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227667.8105,
          2305556.288,
          1.110768768,
          -227467.9705,
          2305789.448,
          2.190768768
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227667.81054324788,
                2305556.2877609367,
                1.110768768200671
              ],
              [
                -227667.81054324788,
                2305789.447760937,
                1.110768768200671
              ],
              [
                -227467.97054324785,
                2305789.447760937,
                2.19076876820067
              ],
              [
                -227467.97054324785,
                2305556.2877609367,
                2.19076876820067
              ],
              [
                -227667.81054324788,
                2305556.2877609367,
                1.110768768200671
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:42+00:00",
        "end_time": "2018-09-08T20:53:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0845.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0845.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0845.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0845.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0354488,
            70.6426845,
            1.110768768,
            -160.0296205,
            70.64497482,
            2.190768768
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.03488862980296,
                  70.64268450495649,
                  1.110768768200671
                ],
                [
                  -160.03544876776363,
                  70.64480895082816,
                  1.110768768200671
                ],
                [
                  -160.03018011505534,
                  70.6449748158888,
                  2.19076876820067
                ],
                [
                  -160.02962046067904,
                  70.64285035256307,
                  2.19076876820067
                ],
                [
                  -160.03488862980296,
                  70.64268450495649,
                  1.110768768200671
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0845.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0845.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:42Z",
            "pc:count": 310895,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227545.8756,
                "count": 310895,
                "maximum": -227467.9705,
                "minimum": -227667.8105,
                "name": "X",
                "position": 0,
                "stddev": 44.03468976,
                "variance": 1939.053902
              },
              {
                "average": 2305639.646,
                "count": 310895,
                "maximum": 2305789.448,
                "minimum": 2305556.288,
                "name": "Y",
                "position": 1,
                "stddev": 52.10354358,
                "variance": 2714.779254
              },
              {
                "average": 1.534092366,
                "count": 310895,
                "maximum": 2.190768768,
                "minimum": 1.110768768,
                "name": "Z",
                "position": 2,
                "stddev": 0.1224620518,
                "variance": 0.01499695414
              },
              {
                "average": 15762.79354,
                "count": 310895,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 12064.17514,
                "variance": 145544321.9
              },
              {
                "average": 1,
                "count": 310895,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 310895,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4908184435,
                "count": 310895,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999164959,
                "variance": 0.2499165029
              },
              {
                "average": 0.0003216520047,
                "count": 310895,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01793180356,
                "variance": 0.000321549579
              },
              {
                "average": 5.994162016,
                "count": 310895,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.618302958,
                "variance": 13.0921163
              },
              {
                "average": 4.01485966,
                "count": 310895,
                "maximum": 21.27599907,
                "minimum": -16.31399918,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.792597424,
                "variance": 33.55418492
              },
              {
                "average": 0.4830827128,
                "count": 310895,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997145271,
                "variance": 0.2497146086
              },
              {
                "average": 595.522781,
                "count": 310895,
                "maximum": 751,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 81.34601022,
                "variance": 6617.173379
              },
              {
                "average": 220872288.4,
                "count": 310895,
                "maximum": 222303722.9,
                "minimum": 220475194.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 753503.4365,
                "variance": 567767428800.0
              },
              {
                "average": 0.4830827128,
                "count": 310895,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997145271,
                "variance": 0.2497146086
              },
              {
                "average": 0,
                "count": 310895,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 310895,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 310895,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03847922932,
                "count": 310895,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1923504542,
                "variance": 0.03699869724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227667.8105,
              2305556.288,
              1.110768768,
              -227467.9705,
              2305789.448,
              2.190768768
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227667.81054324788,
                    2305556.2877609367,
                    1.110768768200671
                  ],
                  [
                    -227667.81054324788,
                    2305789.447760937,
                    1.110768768200671
                  ],
                  [
                    -227467.97054324785,
                    2305789.447760937,
                    2.19076876820067
                  ],
                  [
                    -227467.97054324785,
                    2305556.2877609367,
                    2.19076876820067
                  ],
                  [
                    -227667.81054324788,
                    2305556.2877609367,
                    1.110768768200671
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:42+00:00",
            "end_time": "2018-09-08T20:53:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0800.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.99402385508753,
              70.63371478571375,
              1.27241725759853
            ],
            [
              -159.9952191684937,
              70.63828043664942,
              1.27241725759853
            ],
            [
              -159.98154695832923,
              70.63870777369375,
              13.75241725759853
            ],
            [
              -159.98035434128337,
              70.63414202616183,
              13.75241725759853
            ],
            [
              -159.99402385508753,
              70.63371478571375,
              1.27241725759853
            ]
          ]
        ]
      },
      "bbox": [
        -159.9952192,
        70.63371479,
        1.272417258,
        -159.9803543,
        70.63870777,
        13.75241726
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:07Z",
        "pc:count": 7003081,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225970.2426,
            "count": 7003081,
            "maximum": -225700.0464,
            "minimum": -226218.7464,
            "name": "X",
            "position": 0,
            "stddev": 134.7496986,
            "variance": 18157.48128
          },
          {
            "average": 2304700.39,
            "count": 7003081,
            "maximum": 2304941.335,
            "minimum": 2304440.255,
            "name": "Y",
            "position": 1,
            "stddev": 122.2342291,
            "variance": 14941.20678
          },
          {
            "average": 8.926174947,
            "count": 7003081,
            "maximum": 13.75241726,
            "minimum": 1.272417258,
            "name": "Z",
            "position": 2,
            "stddev": 3.172961173,
            "variance": 10.06768261
          },
          {
            "average": 43454.01559,
            "count": 7003081,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 12728.0524,
            "variance": 162003317.8
          },
          {
            "average": 1,
            "count": 7003081,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 7003081,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5002175471,
            "count": 7003081,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999884,
            "variance": 0.2499999884
          },
          {
            "average": 0.0002303271946,
            "count": 7003081,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01517478754,
            "variance": 0.0002302741768
          },
          {
            "average": 1.585987368,
            "count": 7003081,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.833043828,
            "variance": 3.360049675
          },
          {
            "average": 0.9856277592,
            "count": 7003081,
            "maximum": 21.46199989,
            "minimum": -16.03800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.16221834,
            "variance": 103.2706816
          },
          {
            "average": 0.514731873,
            "count": 7003081,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997829605,
            "variance": 0.2497830076
          },
          {
            "average": 586.7678419,
            "count": 7003081,
            "maximum": 753,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 68.54414015,
            "variance": 4698.299149
          },
          {
            "average": 220743310.5,
            "count": 7003081,
            "maximum": 222304587.3,
            "minimum": 220475755.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 645128.46,
            "variance": 416190729900.0
          },
          {
            "average": 0.514731873,
            "count": 7003081,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997829605,
            "variance": 0.2497830076
          },
          {
            "average": 0,
            "count": 7003081,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7003081,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7003081,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1948686585,
            "count": 7003081,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3960995921,
            "variance": 0.1568948869
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226218.7464,
          2304440.255,
          1.272417258,
          -225700.0464,
          2304941.335,
          13.75241726
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226218.74641903664,
                2304440.254631884,
                1.27241725759853
              ],
              [
                -226218.74641903664,
                2304941.334631884,
                1.27241725759853
              ],
              [
                -225700.04641903663,
                2304941.334631884,
                13.75241725759853
              ],
              [
                -225700.04641903663,
                2304440.254631884,
                13.75241725759853
              ],
              [
                -226218.74641903664,
                2304440.254631884,
                1.27241725759853
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:07+00:00",
        "end_time": "2018-09-08T21:02:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0800.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0800.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0800.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0800.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9952192,
            70.63371479,
            1.272417258,
            -159.9803543,
            70.63870777,
            13.75241726
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.99402385508753,
                  70.63371478571375,
                  1.27241725759853
                ],
                [
                  -159.9952191684937,
                  70.63828043664942,
                  1.27241725759853
                ],
                [
                  -159.98154695832923,
                  70.63870777369375,
                  13.75241725759853
                ],
                [
                  -159.98035434128337,
                  70.63414202616183,
                  13.75241725759853
                ],
                [
                  -159.99402385508753,
                  70.63371478571375,
                  1.27241725759853
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0800.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0800.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:07Z",
            "pc:count": 7003081,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225970.2426,
                "count": 7003081,
                "maximum": -225700.0464,
                "minimum": -226218.7464,
                "name": "X",
                "position": 0,
                "stddev": 134.7496986,
                "variance": 18157.48128
              },
              {
                "average": 2304700.39,
                "count": 7003081,
                "maximum": 2304941.335,
                "minimum": 2304440.255,
                "name": "Y",
                "position": 1,
                "stddev": 122.2342291,
                "variance": 14941.20678
              },
              {
                "average": 8.926174947,
                "count": 7003081,
                "maximum": 13.75241726,
                "minimum": 1.272417258,
                "name": "Z",
                "position": 2,
                "stddev": 3.172961173,
                "variance": 10.06768261
              },
              {
                "average": 43454.01559,
                "count": 7003081,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 12728.0524,
                "variance": 162003317.8
              },
              {
                "average": 1,
                "count": 7003081,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 7003081,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5002175471,
                "count": 7003081,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999884,
                "variance": 0.2499999884
              },
              {
                "average": 0.0002303271946,
                "count": 7003081,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01517478754,
                "variance": 0.0002302741768
              },
              {
                "average": 1.585987368,
                "count": 7003081,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.833043828,
                "variance": 3.360049675
              },
              {
                "average": 0.9856277592,
                "count": 7003081,
                "maximum": 21.46199989,
                "minimum": -16.03800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.16221834,
                "variance": 103.2706816
              },
              {
                "average": 0.514731873,
                "count": 7003081,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997829605,
                "variance": 0.2497830076
              },
              {
                "average": 586.7678419,
                "count": 7003081,
                "maximum": 753,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 68.54414015,
                "variance": 4698.299149
              },
              {
                "average": 220743310.5,
                "count": 7003081,
                "maximum": 222304587.3,
                "minimum": 220475755.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 645128.46,
                "variance": 416190729900.0
              },
              {
                "average": 0.514731873,
                "count": 7003081,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997829605,
                "variance": 0.2497830076
              },
              {
                "average": 0,
                "count": 7003081,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7003081,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7003081,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1948686585,
                "count": 7003081,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3960995921,
                "variance": 0.1568948869
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226218.7464,
              2304440.255,
              1.272417258,
              -225700.0464,
              2304941.335,
              13.75241726
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226218.74641903664,
                    2304440.254631884,
                    1.27241725759853
                  ],
                  [
                    -226218.74641903664,
                    2304941.334631884,
                    1.27241725759853
                  ],
                  [
                    -225700.04641903663,
                    2304941.334631884,
                    13.75241725759853
                  ],
                  [
                    -225700.04641903663,
                    2304440.254631884,
                    13.75241725759853
                  ],
                  [
                    -226218.74641903664,
                    2304440.254631884,
                    1.27241725759853
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:07+00:00",
            "end_time": "2018-09-08T21:02:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0846.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.03024925808188,
              70.64230778293411,
              -11.523365064153053
            ],
            [
              -160.0314058345581,
              70.64669740274648,
              -11.523365064153053
            ],
            [
              -160.01773033974519,
              70.6471273033646,
              30.876634935846944
            ],
            [
              -160.01657635687116,
              70.64273759007814,
              30.876634935846944
            ],
            [
              -160.03024925808188,
              70.64230778293411,
              -11.523365064153053
            ]
          ]
        ]
      },
      "bbox": [
        -160.0314058,
        70.64230778,
        -11.52336506,
        -160.0165764,
        70.6471273,
        30.87663494
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:52Z",
        "pc:count": 4589810,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227198.9452,
            "count": 4589810,
            "maximum": -226978.3441,
            "minimum": -227497.0041,
            "name": "X",
            "position": 0,
            "stddev": 125.3250124,
            "variance": 15706.35874
          },
          {
            "average": 2305720.855,
            "count": 4589810,
            "maximum": 2305981.144,
            "minimum": 2305499.384,
            "name": "Y",
            "position": 1,
            "stddev": 124.270656,
            "variance": 15443.19594
          },
          {
            "average": 6.892244244,
            "count": 4589810,
            "maximum": 30.87663494,
            "minimum": -11.52336506,
            "name": "Z",
            "position": 2,
            "stddev": 4.182353826,
            "variance": 17.49208353
          },
          {
            "average": 32434.92366,
            "count": 4589810,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16874.72861,
            "variance": 284756465.7
          },
          {
            "average": 1.009492986,
            "count": 4589810,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09989677372,
            "variance": 0.0099793654
          },
          {
            "average": 1.019003837,
            "count": 4589810,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1427311415,
            "variance": 0.02037217874
          },
          {
            "average": 0.493826324,
            "count": 4589810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999619387,
            "variance": 0.2499619402
          },
          {
            "average": 0.0002379183452,
            "count": 4589810,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01542276862,
            "variance": 0.0002378617919
          },
          {
            "average": 2.576124284,
            "count": 4589810,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.816794422,
            "variance": 7.934330814
          },
          {
            "average": 3.50082225,
            "count": 4589810,
            "maximum": 21.35400009,
            "minimum": -16.14599991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.95135342,
            "variance": 119.9321417
          },
          {
            "average": 0.4751357899,
            "count": 4589810,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993814428,
            "variance": 0.2493818254
          },
          {
            "average": 604.1942512,
            "count": 4589810,
            "maximum": 751,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 86.99139649,
            "variance": 7567.503063
          },
          {
            "average": 220953101.1,
            "count": 4589810,
            "maximum": 222303732.2,
            "minimum": 220475195.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 803098.231,
            "variance": 644966768600.0
          },
          {
            "average": 0.4751357899,
            "count": 4589810,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993814428,
            "variance": 0.2493818254
          },
          {
            "average": 0,
            "count": 4589810,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4589810,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4589810,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1911734908,
            "count": 4589810,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3932254073,
            "variance": 0.1546262209
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227497.0041,
          2305499.384,
          -11.52336506,
          -226978.3441,
          2305981.144,
          30.87663494
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227497.00411384596,
                2305499.3836630583,
                -11.523365064153053
              ],
              [
                -227497.00411384596,
                2305981.143663058,
                -11.523365064153053
              ],
              [
                -226978.344113846,
                2305981.143663058,
                30.876634935846944
              ],
              [
                -226978.344113846,
                2305499.3836630583,
                30.876634935846944
              ],
              [
                -227497.00411384596,
                2305499.3836630583,
                -11.523365064153053
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:52+00:00",
        "end_time": "2018-09-08T20:53:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0846.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0846.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0846.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0846.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0314058,
            70.64230778,
            -11.52336506,
            -160.0165764,
            70.6471273,
            30.87663494
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.03024925808188,
                  70.64230778293411,
                  -11.523365064153053
                ],
                [
                  -160.0314058345581,
                  70.64669740274648,
                  -11.523365064153053
                ],
                [
                  -160.01773033974519,
                  70.6471273033646,
                  30.876634935846944
                ],
                [
                  -160.01657635687116,
                  70.64273759007814,
                  30.876634935846944
                ],
                [
                  -160.03024925808188,
                  70.64230778293411,
                  -11.523365064153053
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0846.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0846.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:52Z",
            "pc:count": 4589810,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227198.9452,
                "count": 4589810,
                "maximum": -226978.3441,
                "minimum": -227497.0041,
                "name": "X",
                "position": 0,
                "stddev": 125.3250124,
                "variance": 15706.35874
              },
              {
                "average": 2305720.855,
                "count": 4589810,
                "maximum": 2305981.144,
                "minimum": 2305499.384,
                "name": "Y",
                "position": 1,
                "stddev": 124.270656,
                "variance": 15443.19594
              },
              {
                "average": 6.892244244,
                "count": 4589810,
                "maximum": 30.87663494,
                "minimum": -11.52336506,
                "name": "Z",
                "position": 2,
                "stddev": 4.182353826,
                "variance": 17.49208353
              },
              {
                "average": 32434.92366,
                "count": 4589810,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16874.72861,
                "variance": 284756465.7
              },
              {
                "average": 1.009492986,
                "count": 4589810,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09989677372,
                "variance": 0.0099793654
              },
              {
                "average": 1.019003837,
                "count": 4589810,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1427311415,
                "variance": 0.02037217874
              },
              {
                "average": 0.493826324,
                "count": 4589810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999619387,
                "variance": 0.2499619402
              },
              {
                "average": 0.0002379183452,
                "count": 4589810,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01542276862,
                "variance": 0.0002378617919
              },
              {
                "average": 2.576124284,
                "count": 4589810,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.816794422,
                "variance": 7.934330814
              },
              {
                "average": 3.50082225,
                "count": 4589810,
                "maximum": 21.35400009,
                "minimum": -16.14599991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.95135342,
                "variance": 119.9321417
              },
              {
                "average": 0.4751357899,
                "count": 4589810,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993814428,
                "variance": 0.2493818254
              },
              {
                "average": 604.1942512,
                "count": 4589810,
                "maximum": 751,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 86.99139649,
                "variance": 7567.503063
              },
              {
                "average": 220953101.1,
                "count": 4589810,
                "maximum": 222303732.2,
                "minimum": 220475195.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 803098.231,
                "variance": 644966768600.0
              },
              {
                "average": 0.4751357899,
                "count": 4589810,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993814428,
                "variance": 0.2493818254
              },
              {
                "average": 0,
                "count": 4589810,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4589810,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4589810,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1911734908,
                "count": 4589810,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3932254073,
                "variance": 0.1546262209
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227497.0041,
              2305499.384,
              -11.52336506,
              -226978.3441,
              2305981.144,
              30.87663494
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227497.00411384596,
                    2305499.3836630583,
                    -11.523365064153053
                  ],
                  [
                    -227497.00411384596,
                    2305981.143663058,
                    -11.523365064153053
                  ],
                  [
                    -226978.344113846,
                    2305981.143663058,
                    30.876634935846944
                  ],
                  [
                    -226978.344113846,
                    2305499.3836630583,
                    30.876634935846944
                  ],
                  [
                    -227497.00411384596,
                    2305499.3836630583,
                    -11.523365064153053
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:52+00:00",
            "end_time": "2018-09-08T20:53:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0801.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9816834223505,
              70.63357820712127,
              1.258122861100958
            ],
            [
              -159.9828763696722,
              70.63814429553464,
              1.258122861100958
            ],
            [
              -159.96920401133067,
              70.63857075381304,
              9.878122861100959
            ],
            [
              -159.96801376073492,
              70.63400456899355,
              9.878122861100959
            ],
            [
              -159.9816834223505,
              70.63357820712127,
              1.258122861100958
            ]
          ]
        ]
      },
      "bbox": [
        -159.9828764,
        70.63357821,
        1.258122861,
        -159.9680138,
        70.63857075,
        9.878122861
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:12Z",
        "pc:count": 5251530,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225504.2516,
            "count": 5251530,
            "maximum": -225236.9139,
            "minimum": -225755.6139,
            "name": "X",
            "position": 0,
            "stddev": 129.8374035,
            "variance": 16857.75134
          },
          {
            "average": 2304661.873,
            "count": 5251530,
            "maximum": 2304884.514,
            "minimum": 2304383.394,
            "name": "Y",
            "position": 1,
            "stddev": 131.612661,
            "variance": 17321.89253
          },
          {
            "average": 5.372175154,
            "count": 5251530,
            "maximum": 9.878122861,
            "minimum": 1.258122861,
            "name": "Z",
            "position": 2,
            "stddev": 2.872608685,
            "variance": 8.251880658
          },
          {
            "average": 42374.06333,
            "count": 5251530,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 15228.41876,
            "variance": 231904737.9
          },
          {
            "average": 1.00000019,
            "count": 5251530,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0004363721994,
            "variance": 1.904206964e-07
          },
          {
            "average": 1.000000381,
            "count": 5251530,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0006171234239,
            "variance": 3.808413204e-07
          },
          {
            "average": 0.4932800536,
            "count": 5251530,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999548879,
            "variance": 0.2499548899
          },
          {
            "average": 0.0002888681965,
            "count": 5251530,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01699366961,
            "variance": 0.0002887848067
          },
          {
            "average": 1.822936173,
            "count": 5251530,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.196250267,
            "variance": 4.823515235
          },
          {
            "average": 4.474655679,
            "count": 5251530,
            "maximum": 21.33600044,
            "minimum": -16.25399971,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.601214069,
            "variance": 92.1833116
          },
          {
            "average": 0.5069511171,
            "count": 5251530,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999517272,
            "variance": 0.2499517296
          },
          {
            "average": 592.8923485,
            "count": 5251530,
            "maximum": 753,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 75.41553736,
            "variance": 5687.503275
          },
          {
            "average": 220809243.2,
            "count": 5251530,
            "maximum": 222304592,
            "minimum": 220475754,
            "name": "GpsTime",
            "position": 12,
            "stddev": 705416.2146,
            "variance": 497612035800.0
          },
          {
            "average": 0.5069511171,
            "count": 5251530,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999517272,
            "variance": 0.2499517296
          },
          {
            "average": 0,
            "count": 5251530,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5251530,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5251530,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1690063658,
            "count": 5251530,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3747575761,
            "variance": 0.1404432408
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225755.6139,
          2304383.394,
          1.258122861,
          -225236.9139,
          2304884.514,
          9.878122861
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225755.6139303528,
                2304383.393890657,
                1.258122861100958
              ],
              [
                -225755.6139303528,
                2304884.513890657,
                1.258122861100958
              ],
              [
                -225236.91393035278,
                2304884.513890657,
                9.878122861100959
              ],
              [
                -225236.91393035278,
                2304383.393890657,
                9.878122861100959
              ],
              [
                -225755.6139303528,
                2304383.393890657,
                1.258122861100958
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:12+00:00",
        "end_time": "2018-09-08T21:02:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0801.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0801.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0801.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0801.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9828764,
            70.63357821,
            1.258122861,
            -159.9680138,
            70.63857075,
            9.878122861
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9816834223505,
                  70.63357820712127,
                  1.258122861100958
                ],
                [
                  -159.9828763696722,
                  70.63814429553464,
                  1.258122861100958
                ],
                [
                  -159.96920401133067,
                  70.63857075381304,
                  9.878122861100959
                ],
                [
                  -159.96801376073492,
                  70.63400456899355,
                  9.878122861100959
                ],
                [
                  -159.9816834223505,
                  70.63357820712127,
                  1.258122861100958
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0801.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0801.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:12Z",
            "pc:count": 5251530,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225504.2516,
                "count": 5251530,
                "maximum": -225236.9139,
                "minimum": -225755.6139,
                "name": "X",
                "position": 0,
                "stddev": 129.8374035,
                "variance": 16857.75134
              },
              {
                "average": 2304661.873,
                "count": 5251530,
                "maximum": 2304884.514,
                "minimum": 2304383.394,
                "name": "Y",
                "position": 1,
                "stddev": 131.612661,
                "variance": 17321.89253
              },
              {
                "average": 5.372175154,
                "count": 5251530,
                "maximum": 9.878122861,
                "minimum": 1.258122861,
                "name": "Z",
                "position": 2,
                "stddev": 2.872608685,
                "variance": 8.251880658
              },
              {
                "average": 42374.06333,
                "count": 5251530,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 15228.41876,
                "variance": 231904737.9
              },
              {
                "average": 1.00000019,
                "count": 5251530,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0004363721994,
                "variance": 1.904206964e-07
              },
              {
                "average": 1.000000381,
                "count": 5251530,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0006171234239,
                "variance": 3.808413204e-07
              },
              {
                "average": 0.4932800536,
                "count": 5251530,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999548879,
                "variance": 0.2499548899
              },
              {
                "average": 0.0002888681965,
                "count": 5251530,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01699366961,
                "variance": 0.0002887848067
              },
              {
                "average": 1.822936173,
                "count": 5251530,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.196250267,
                "variance": 4.823515235
              },
              {
                "average": 4.474655679,
                "count": 5251530,
                "maximum": 21.33600044,
                "minimum": -16.25399971,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.601214069,
                "variance": 92.1833116
              },
              {
                "average": 0.5069511171,
                "count": 5251530,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999517272,
                "variance": 0.2499517296
              },
              {
                "average": 592.8923485,
                "count": 5251530,
                "maximum": 753,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 75.41553736,
                "variance": 5687.503275
              },
              {
                "average": 220809243.2,
                "count": 5251530,
                "maximum": 222304592,
                "minimum": 220475754,
                "name": "GpsTime",
                "position": 12,
                "stddev": 705416.2146,
                "variance": 497612035800.0
              },
              {
                "average": 0.5069511171,
                "count": 5251530,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999517272,
                "variance": 0.2499517296
              },
              {
                "average": 0,
                "count": 5251530,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5251530,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5251530,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1690063658,
                "count": 5251530,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3747575761,
                "variance": 0.1404432408
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225755.6139,
              2304383.394,
              1.258122861,
              -225236.9139,
              2304884.514,
              9.878122861
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225755.6139303528,
                    2304383.393890657,
                    1.258122861100958
                  ],
                  [
                    -225755.6139303528,
                    2304884.513890657,
                    1.258122861100958
                  ],
                  [
                    -225236.91393035278,
                    2304884.513890657,
                    9.878122861100959
                  ],
                  [
                    -225236.91393035278,
                    2304383.393890657,
                    9.878122861100959
                  ],
                  [
                    -225755.6139303528,
                    2304383.393890657,
                    1.258122861100958
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:12+00:00",
            "end_time": "2018-09-08T21:02:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0847.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0179048055186,
              70.64217518935376,
              8.293326200384826
            ],
            [
              -160.0191050230376,
              70.64673982831816,
              8.293326200384826
            ],
            [
              -160.00542610886407,
              70.64716895282548,
              20.493326200384825
            ],
            [
              -160.00422858910915,
              70.64260421683622,
              20.493326200384825
            ],
            [
              -160.0179048055186,
              70.64217518935376,
              8.293326200384826
            ]
          ]
        ]
      },
      "bbox": [
        -160.019105,
        70.64217519,
        8.2933262,
        -160.0042286,
        70.64716895,
        20.4933262
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:56Z",
        "pc:count": 6079665,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226780.6072,
            "count": 6079665,
            "maximum": -226515.1058,
            "minimum": -227033.8858,
            "name": "X",
            "position": 0,
            "stddev": 134.4348122,
            "variance": 18072.71873
          },
          {
            "average": 2305697.759,
            "count": 6079665,
            "maximum": 2305943.667,
            "minimum": 2305442.707,
            "name": "Y",
            "position": 1,
            "stddev": 132.0431945,
            "variance": 17435.40523
          },
          {
            "average": 15.12956116,
            "count": 6079665,
            "maximum": 20.4933262,
            "minimum": 8.2933262,
            "name": "Z",
            "position": 2,
            "stddev": 1.611692731,
            "variance": 2.597553458
          },
          {
            "average": 45966.41724,
            "count": 6079665,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 7819.866945,
            "variance": 61150319.04
          },
          {
            "average": 1.000782938,
            "count": 6079665,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02852903267,
            "variance": 0.0008139057053
          },
          {
            "average": 1.00156785,
            "count": 6079665,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04074473865,
            "variance": 0.001660133727
          },
          {
            "average": 0.4951843564,
            "count": 6079665,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999768502,
            "variance": 0.2499768507
          },
          {
            "average": 0.0002259992944,
            "count": 6079665,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0150315753,
            "variance": 0.0002259482559
          },
          {
            "average": 1.23249258,
            "count": 6079665,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4298753216,
            "variance": 0.1847927921
          },
          {
            "average": 3.096820562,
            "count": 6079665,
            "maximum": 21.3239994,
            "minimum": -16.17000008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.87149621,
            "variance": 118.1894299
          },
          {
            "average": 0.4873566224,
            "count": 6079665,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998401605,
            "variance": 0.2498401861
          },
          {
            "average": 591.7397924,
            "count": 6079665,
            "maximum": 751,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 78.97522991,
            "variance": 6237.08694
          },
          {
            "average": 220837748.1,
            "count": 6079665,
            "maximum": 222303736.5,
            "minimum": 220475201.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 728702.251,
            "variance": 531006970600.0
          },
          {
            "average": 0.4873566224,
            "count": 6079665,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998401605,
            "variance": 0.2498401861
          },
          {
            "average": 0,
            "count": 6079665,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6079665,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6079665,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2377576725,
            "count": 6079665,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4257099852,
            "variance": 0.1812289915
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227033.8858,
          2305442.707,
          8.2933262,
          -226515.1058,
          2305943.667,
          20.4933262
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227033.88579726755,
                2305442.7069043596,
                8.293326200384826
              ],
              [
                -227033.88579726755,
                2305943.6669043596,
                8.293326200384826
              ],
              [
                -226515.10579726752,
                2305943.6669043596,
                20.493326200384825
              ],
              [
                -226515.10579726752,
                2305442.7069043596,
                20.493326200384825
              ],
              [
                -227033.88579726755,
                2305442.7069043596,
                8.293326200384826
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:56+00:00",
        "end_time": "2018-09-08T20:53:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0847.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0847.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0847.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0847.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.019105,
            70.64217519,
            8.2933262,
            -160.0042286,
            70.64716895,
            20.4933262
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0179048055186,
                  70.64217518935376,
                  8.293326200384826
                ],
                [
                  -160.0191050230376,
                  70.64673982831816,
                  8.293326200384826
                ],
                [
                  -160.00542610886407,
                  70.64716895282548,
                  20.493326200384825
                ],
                [
                  -160.00422858910915,
                  70.64260421683622,
                  20.493326200384825
                ],
                [
                  -160.0179048055186,
                  70.64217518935376,
                  8.293326200384826
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0847.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0847.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:56Z",
            "pc:count": 6079665,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226780.6072,
                "count": 6079665,
                "maximum": -226515.1058,
                "minimum": -227033.8858,
                "name": "X",
                "position": 0,
                "stddev": 134.4348122,
                "variance": 18072.71873
              },
              {
                "average": 2305697.759,
                "count": 6079665,
                "maximum": 2305943.667,
                "minimum": 2305442.707,
                "name": "Y",
                "position": 1,
                "stddev": 132.0431945,
                "variance": 17435.40523
              },
              {
                "average": 15.12956116,
                "count": 6079665,
                "maximum": 20.4933262,
                "minimum": 8.2933262,
                "name": "Z",
                "position": 2,
                "stddev": 1.611692731,
                "variance": 2.597553458
              },
              {
                "average": 45966.41724,
                "count": 6079665,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 7819.866945,
                "variance": 61150319.04
              },
              {
                "average": 1.000782938,
                "count": 6079665,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02852903267,
                "variance": 0.0008139057053
              },
              {
                "average": 1.00156785,
                "count": 6079665,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04074473865,
                "variance": 0.001660133727
              },
              {
                "average": 0.4951843564,
                "count": 6079665,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999768502,
                "variance": 0.2499768507
              },
              {
                "average": 0.0002259992944,
                "count": 6079665,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0150315753,
                "variance": 0.0002259482559
              },
              {
                "average": 1.23249258,
                "count": 6079665,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4298753216,
                "variance": 0.1847927921
              },
              {
                "average": 3.096820562,
                "count": 6079665,
                "maximum": 21.3239994,
                "minimum": -16.17000008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.87149621,
                "variance": 118.1894299
              },
              {
                "average": 0.4873566224,
                "count": 6079665,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998401605,
                "variance": 0.2498401861
              },
              {
                "average": 591.7397924,
                "count": 6079665,
                "maximum": 751,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 78.97522991,
                "variance": 6237.08694
              },
              {
                "average": 220837748.1,
                "count": 6079665,
                "maximum": 222303736.5,
                "minimum": 220475201.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 728702.251,
                "variance": 531006970600.0
              },
              {
                "average": 0.4873566224,
                "count": 6079665,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998401605,
                "variance": 0.2498401861
              },
              {
                "average": 0,
                "count": 6079665,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6079665,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6079665,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2377576725,
                "count": 6079665,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4257099852,
                "variance": 0.1812289915
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227033.8858,
              2305442.707,
              8.2933262,
              -226515.1058,
              2305943.667,
              20.4933262
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227033.88579726755,
                    2305442.7069043596,
                    8.293326200384826
                  ],
                  [
                    -227033.88579726755,
                    2305943.6669043596,
                    8.293326200384826
                  ],
                  [
                    -226515.10579726752,
                    2305943.6669043596,
                    20.493326200384825
                  ],
                  [
                    -226515.10579726752,
                    2305442.7069043596,
                    20.493326200384825
                  ],
                  [
                    -227033.88579726755,
                    2305442.7069043596,
                    8.293326200384826
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:56+00:00",
            "end_time": "2018-09-08T20:53:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0802.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.96934066611593,
              70.63344214689492,
              1.315162422422604
            ],
            [
              -159.9705309613783,
              70.638007579225,
              1.315162422422604
            ],
            [
              -159.9568574012414,
              70.63843319131846,
              11.995162422422602
            ],
            [
              -159.95566980263243,
              70.63386766278813,
              11.995162422422602
            ],
            [
              -159.96934066611593,
              70.63344214689492,
              1.315162422422604
            ]
          ]
        ]
      },
      "bbox": [
        -159.970531,
        70.63344215,
        1.315162422,
        -159.9556698,
        70.63843319,
        11.99516242
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:16Z",
        "pc:count": 5602432,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225016.6706,
            "count": 5602432,
            "maximum": -224773.6356,
            "minimum": -225292.3756,
            "name": "X",
            "position": 0,
            "stddev": 132.561164,
            "variance": 17572.46221
          },
          {
            "average": 2304562.656,
            "count": 5602432,
            "maximum": 2304827.707,
            "minimum": 2304326.667,
            "name": "Y",
            "position": 1,
            "stddev": 128.6462118,
            "variance": 16549.84782
          },
          {
            "average": 8.623087697,
            "count": 5602432,
            "maximum": 11.99516242,
            "minimum": 1.315162422,
            "name": "Z",
            "position": 2,
            "stddev": 2.733808215,
            "variance": 7.473707355
          },
          {
            "average": 47696.50013,
            "count": 5602432,
            "maximum": 65535,
            "minimum": 1045,
            "name": "Intensity",
            "position": 3,
            "stddev": 9287.613745,
            "variance": 86259769.08
          },
          {
            "average": 1,
            "count": 5602432,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5602432,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.500394293,
            "count": 5602432,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999998892,
            "variance": 0.2499998892
          },
          {
            "average": 0.0002138357056,
            "count": 5602432,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01462156004,
            "variance": 0.0002137900181
          },
          {
            "average": 1.398828402,
            "count": 5602432,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.212710368,
            "variance": 1.470666436
          },
          {
            "average": -1.044948286,
            "count": 5602432,
            "maximum": 21.27599907,
            "minimum": -20.76000023,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.426796,
            "variance": 108.7180748
          },
          {
            "average": 0.4697724131,
            "count": 5602432,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4990855011,
            "variance": 0.2490863375
          },
          {
            "average": 589.2867064,
            "count": 5602432,
            "maximum": 754,
            "minimum": 555,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 73.34482744,
            "variance": 5379.463713
          },
          {
            "average": 220781111.8,
            "count": 5602432,
            "maximum": 222304956.7,
            "minimum": 220475981.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 681537.5866,
            "variance": 464493482000.0
          },
          {
            "average": 0.4697724131,
            "count": 5602432,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4990855011,
            "variance": 0.2490863375
          },
          {
            "average": 0,
            "count": 5602432,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5602432,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5602432,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2146796248,
            "count": 5602432,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4105999435,
            "variance": 0.1685923136
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225292.3756,
          2304326.667,
          1.315162422,
          -224773.6356,
          2304827.707,
          11.99516242
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225292.3755799452,
                2304326.667496811,
                1.315162422422604
              ],
              [
                -225292.3755799452,
                2304827.707496811,
                1.315162422422604
              ],
              [
                -224773.6355799452,
                2304827.707496811,
                11.995162422422602
              ],
              [
                -224773.6355799452,
                2304326.667496811,
                11.995162422422602
              ],
              [
                -225292.3755799452,
                2304326.667496811,
                1.315162422422604
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:16+00:00",
        "end_time": "2018-09-08T21:06:21+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0802.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0802.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0802.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0802.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.970531,
            70.63344215,
            1.315162422,
            -159.9556698,
            70.63843319,
            11.99516242
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.96934066611593,
                  70.63344214689492,
                  1.315162422422604
                ],
                [
                  -159.9705309613783,
                  70.638007579225,
                  1.315162422422604
                ],
                [
                  -159.9568574012414,
                  70.63843319131846,
                  11.995162422422602
                ],
                [
                  -159.95566980263243,
                  70.63386766278813,
                  11.995162422422602
                ],
                [
                  -159.96934066611593,
                  70.63344214689492,
                  1.315162422422604
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0802.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0802.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:16Z",
            "pc:count": 5602432,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225016.6706,
                "count": 5602432,
                "maximum": -224773.6356,
                "minimum": -225292.3756,
                "name": "X",
                "position": 0,
                "stddev": 132.561164,
                "variance": 17572.46221
              },
              {
                "average": 2304562.656,
                "count": 5602432,
                "maximum": 2304827.707,
                "minimum": 2304326.667,
                "name": "Y",
                "position": 1,
                "stddev": 128.6462118,
                "variance": 16549.84782
              },
              {
                "average": 8.623087697,
                "count": 5602432,
                "maximum": 11.99516242,
                "minimum": 1.315162422,
                "name": "Z",
                "position": 2,
                "stddev": 2.733808215,
                "variance": 7.473707355
              },
              {
                "average": 47696.50013,
                "count": 5602432,
                "maximum": 65535,
                "minimum": 1045,
                "name": "Intensity",
                "position": 3,
                "stddev": 9287.613745,
                "variance": 86259769.08
              },
              {
                "average": 1,
                "count": 5602432,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5602432,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.500394293,
                "count": 5602432,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999998892,
                "variance": 0.2499998892
              },
              {
                "average": 0.0002138357056,
                "count": 5602432,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01462156004,
                "variance": 0.0002137900181
              },
              {
                "average": 1.398828402,
                "count": 5602432,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.212710368,
                "variance": 1.470666436
              },
              {
                "average": -1.044948286,
                "count": 5602432,
                "maximum": 21.27599907,
                "minimum": -20.76000023,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.426796,
                "variance": 108.7180748
              },
              {
                "average": 0.4697724131,
                "count": 5602432,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4990855011,
                "variance": 0.2490863375
              },
              {
                "average": 589.2867064,
                "count": 5602432,
                "maximum": 754,
                "minimum": 555,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 73.34482744,
                "variance": 5379.463713
              },
              {
                "average": 220781111.8,
                "count": 5602432,
                "maximum": 222304956.7,
                "minimum": 220475981.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 681537.5866,
                "variance": 464493482000.0
              },
              {
                "average": 0.4697724131,
                "count": 5602432,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4990855011,
                "variance": 0.2490863375
              },
              {
                "average": 0,
                "count": 5602432,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5602432,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5602432,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2146796248,
                "count": 5602432,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4105999435,
                "variance": 0.1685923136
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225292.3756,
              2304326.667,
              1.315162422,
              -224773.6356,
              2304827.707,
              11.99516242
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225292.3755799452,
                    2304326.667496811,
                    1.315162422422604
                  ],
                  [
                    -225292.3755799452,
                    2304827.707496811,
                    1.315162422422604
                  ],
                  [
                    -224773.6355799452,
                    2304827.707496811,
                    11.995162422422602
                  ],
                  [
                    -224773.6355799452,
                    2304326.667496811,
                    11.995162422422602
                  ],
                  [
                    -225292.3755799452,
                    2304326.667496811,
                    1.315162422422604
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:16+00:00",
            "end_time": "2018-09-08T21:06:21+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0848.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.00555710577532,
              70.64204069487516,
              10.504176407805888
            ],
            [
              -160.0067550516752,
              70.64660613619313,
              10.504176407805888
            ],
            [
              -159.99307493203287,
              70.64703441425873,
              14.984176407805888
            ],
            [
              -159.99187968468777,
              70.64246887609104,
              14.984176407805888
            ],
            [
              -160.00555710577532,
              70.64204069487516,
              10.504176407805888
            ]
          ]
        ]
      },
      "bbox": [
        -160.0067551,
        70.64204069,
        10.50417641,
        -159.9918797,
        70.64703441,
        14.98417641
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:49Z",
        "pc:count": 5480833,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226295.4725,
            "count": 5480833,
            "maximum": -226051.8309,
            "minimum": -226570.6509,
            "name": "X",
            "position": 0,
            "stddev": 137.7230025,
            "variance": 18967.62541
          },
          {
            "average": 2305635.911,
            "count": 5480833,
            "maximum": 2305886.938,
            "minimum": 2305385.898,
            "name": "Y",
            "position": 1,
            "stddev": 131.3251191,
            "variance": 17246.28691
          },
          {
            "average": 11.52578276,
            "count": 5480833,
            "maximum": 14.98417641,
            "minimum": 10.50417641,
            "name": "Z",
            "position": 2,
            "stddev": 0.7253978935,
            "variance": 0.5262021039
          },
          {
            "average": 35488.28263,
            "count": 5480833,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 12319.40058,
            "variance": 151767630.7
          },
          {
            "average": 1,
            "count": 5480833,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5480833,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5034021288,
            "count": 5480833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499988471,
            "variance": 0.2499884711
          },
          {
            "average": 0.0003034210311,
            "count": 5480833,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01741634353,
            "variance": 0.0003033290221
          },
          {
            "average": 1.519631596,
            "count": 5480833,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.607407593,
            "variance": 2.58375917
          },
          {
            "average": -2.443018097,
            "count": 5480833,
            "maximum": 16.77000046,
            "minimum": -20.73600006,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73453651,
            "variance": 115.2302741
          },
          {
            "average": 0.4669370514,
            "count": 5480833,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989056893,
            "variance": 0.2489068868
          },
          {
            "average": 590.4754135,
            "count": 5480833,
            "maximum": 752,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 77.38621035,
            "variance": 5988.625553
          },
          {
            "average": 220819021.7,
            "count": 5480833,
            "maximum": 222304089.5,
            "minimum": 220475208.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 714041.3707,
            "variance": 509855079100.0
          },
          {
            "average": 0.4669370514,
            "count": 5480833,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989056893,
            "variance": 0.2489068868
          },
          {
            "average": 0,
            "count": 5480833,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5480833,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5480833,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.255768968,
            "count": 5480833,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4362926056,
            "variance": 0.1903512377
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226570.6509,
          2305385.898,
          10.50417641,
          -226051.8309,
          2305886.938,
          14.98417641
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226570.65086294623,
                2305385.897979937,
                10.504176407805888
              ],
              [
                -226570.65086294623,
                2305886.937979937,
                10.504176407805888
              ],
              [
                -226051.83086294623,
                2305886.937979937,
                14.984176407805888
              ],
              [
                -226051.83086294623,
                2305385.897979937,
                14.984176407805888
              ],
              [
                -226570.65086294623,
                2305385.897979937,
                10.504176407805888
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:49+00:00",
        "end_time": "2018-09-08T20:53:28+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0848.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0848.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0848.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0848.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0067551,
            70.64204069,
            10.50417641,
            -159.9918797,
            70.64703441,
            14.98417641
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.00555710577532,
                  70.64204069487516,
                  10.504176407805888
                ],
                [
                  -160.0067550516752,
                  70.64660613619313,
                  10.504176407805888
                ],
                [
                  -159.99307493203287,
                  70.64703441425873,
                  14.984176407805888
                ],
                [
                  -159.99187968468777,
                  70.64246887609104,
                  14.984176407805888
                ],
                [
                  -160.00555710577532,
                  70.64204069487516,
                  10.504176407805888
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0848.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0848.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:49Z",
            "pc:count": 5480833,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226295.4725,
                "count": 5480833,
                "maximum": -226051.8309,
                "minimum": -226570.6509,
                "name": "X",
                "position": 0,
                "stddev": 137.7230025,
                "variance": 18967.62541
              },
              {
                "average": 2305635.911,
                "count": 5480833,
                "maximum": 2305886.938,
                "minimum": 2305385.898,
                "name": "Y",
                "position": 1,
                "stddev": 131.3251191,
                "variance": 17246.28691
              },
              {
                "average": 11.52578276,
                "count": 5480833,
                "maximum": 14.98417641,
                "minimum": 10.50417641,
                "name": "Z",
                "position": 2,
                "stddev": 0.7253978935,
                "variance": 0.5262021039
              },
              {
                "average": 35488.28263,
                "count": 5480833,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 12319.40058,
                "variance": 151767630.7
              },
              {
                "average": 1,
                "count": 5480833,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5480833,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5034021288,
                "count": 5480833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499988471,
                "variance": 0.2499884711
              },
              {
                "average": 0.0003034210311,
                "count": 5480833,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01741634353,
                "variance": 0.0003033290221
              },
              {
                "average": 1.519631596,
                "count": 5480833,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.607407593,
                "variance": 2.58375917
              },
              {
                "average": -2.443018097,
                "count": 5480833,
                "maximum": 16.77000046,
                "minimum": -20.73600006,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73453651,
                "variance": 115.2302741
              },
              {
                "average": 0.4669370514,
                "count": 5480833,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989056893,
                "variance": 0.2489068868
              },
              {
                "average": 590.4754135,
                "count": 5480833,
                "maximum": 752,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 77.38621035,
                "variance": 5988.625553
              },
              {
                "average": 220819021.7,
                "count": 5480833,
                "maximum": 222304089.5,
                "minimum": 220475208.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 714041.3707,
                "variance": 509855079100.0
              },
              {
                "average": 0.4669370514,
                "count": 5480833,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989056893,
                "variance": 0.2489068868
              },
              {
                "average": 0,
                "count": 5480833,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5480833,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5480833,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.255768968,
                "count": 5480833,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4362926056,
                "variance": 0.1903512377
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226570.6509,
              2305385.898,
              10.50417641,
              -226051.8309,
              2305886.938,
              14.98417641
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226570.65086294623,
                    2305385.897979937,
                    10.504176407805888
                  ],
                  [
                    -226570.65086294623,
                    2305886.937979937,
                    10.504176407805888
                  ],
                  [
                    -226051.83086294623,
                    2305886.937979937,
                    14.984176407805888
                  ],
                  [
                    -226051.83086294623,
                    2305385.897979937,
                    14.984176407805888
                  ],
                  [
                    -226570.65086294623,
                    2305385.897979937,
                    10.504176407805888
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:49+00:00",
            "end_time": "2018-09-08T20:53:28+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0795.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.05169230061367,
              70.63450809971776,
              1.161562926992723
            ],
            [
              -160.05277082754196,
              70.63858815720458,
              1.161562926992723
            ],
            [
              -160.04314692671076,
              70.63889196703488,
              11.381562926992725
            ],
            [
              -160.0420700956545,
              70.63481184817599,
              11.381562926992725
            ],
            [
              -160.05169230061367,
              70.63450809971776,
              1.161562926992723
            ]
          ]
        ]
      },
      "bbox": [
        -160.0527708,
        70.6345081,
        1.161562927,
        -160.0420701,
        70.63889197,
        11.38156293
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:31Z",
        "pc:count": 1301550,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228148.2626,
            "count": 1301550,
            "maximum": -228016.1653,
            "minimum": -228381.3053,
            "name": "X",
            "position": 0,
            "stddev": 76.6802225,
            "variance": 5879.856522
          },
          {
            "average": 2304881.161,
            "count": 1301550,
            "maximum": 2305171.808,
            "minimum": 2304723.988,
            "name": "Y",
            "position": 1,
            "stddev": 110.0350161,
            "variance": 12107.70476
          },
          {
            "average": 1.856419782,
            "count": 1301550,
            "maximum": 11.38156293,
            "minimum": 1.161562927,
            "name": "Z",
            "position": 2,
            "stddev": 0.8430099063,
            "variance": 0.7106657021
          },
          {
            "average": 17683.67377,
            "count": 1301550,
            "maximum": 65535,
            "minimum": 1045,
            "name": "Intensity",
            "position": 3,
            "stddev": 13166.31054,
            "variance": 173351733.2
          },
          {
            "average": 1.000019208,
            "count": 1301550,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004382637717,
            "variance": 1.920751336e-05
          },
          {
            "average": 1.000038416,
            "count": 1301550,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006197926172,
            "variance": 3.841428883e-05
          },
          {
            "average": 0.501430602,
            "count": 1301550,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999981455,
            "variance": 0.2499981455
          },
          {
            "average": 0.0004671353386,
            "count": 1301550,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02160827346,
            "variance": 0.0004669174819
          },
          {
            "average": 4.773254965,
            "count": 1301550,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.760135052,
            "variance": 14.13861561
          },
          {
            "average": 1.405799479,
            "count": 1301550,
            "maximum": 21.31800079,
            "minimum": -16.02599907,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.862755276,
            "variance": 78.54843108
          },
          {
            "average": 0.4958772233,
            "count": 1301550,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999831945,
            "variance": 0.2499831948
          },
          {
            "average": 597.1730337,
            "count": 1301550,
            "maximum": 751,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 79.79678657,
            "variance": 6367.527147
          },
          {
            "average": 220866832.3,
            "count": 1301550,
            "maximum": 222303711.2,
            "minimum": 220475789.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 749223.2767,
            "variance": 561335518400.0
          },
          {
            "average": 0.4958772233,
            "count": 1301550,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999831945,
            "variance": 0.2499831948
          },
          {
            "average": 0,
            "count": 1301550,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1301550,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1301550,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08403365218,
            "count": 1301550,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2774383835,
            "variance": 0.07697205662
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228381.3053,
          2304723.988,
          1.161562927,
          -228016.1653,
          2305171.808,
          11.38156293
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228381.30532930978,
                2304723.9883616967,
                1.161562926992723
              ],
              [
                -228381.30532930978,
                2305171.808361697,
                1.161562926992723
              ],
              [
                -228016.16532930976,
                2305171.808361697,
                11.381562926992725
              ],
              [
                -228016.16532930976,
                2304723.9883616967,
                11.381562926992725
              ],
              [
                -228381.30532930978,
                2304723.9883616967,
                1.161562926992723
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:31+00:00",
        "end_time": "2018-09-08T21:03:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0795.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0795.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0795.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0795.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0527708,
            70.6345081,
            1.161562927,
            -160.0420701,
            70.63889197,
            11.38156293
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.05169230061367,
                  70.63450809971776,
                  1.161562926992723
                ],
                [
                  -160.05277082754196,
                  70.63858815720458,
                  1.161562926992723
                ],
                [
                  -160.04314692671076,
                  70.63889196703488,
                  11.381562926992725
                ],
                [
                  -160.0420700956545,
                  70.63481184817599,
                  11.381562926992725
                ],
                [
                  -160.05169230061367,
                  70.63450809971776,
                  1.161562926992723
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0795.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0795.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:31Z",
            "pc:count": 1301550,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228148.2626,
                "count": 1301550,
                "maximum": -228016.1653,
                "minimum": -228381.3053,
                "name": "X",
                "position": 0,
                "stddev": 76.6802225,
                "variance": 5879.856522
              },
              {
                "average": 2304881.161,
                "count": 1301550,
                "maximum": 2305171.808,
                "minimum": 2304723.988,
                "name": "Y",
                "position": 1,
                "stddev": 110.0350161,
                "variance": 12107.70476
              },
              {
                "average": 1.856419782,
                "count": 1301550,
                "maximum": 11.38156293,
                "minimum": 1.161562927,
                "name": "Z",
                "position": 2,
                "stddev": 0.8430099063,
                "variance": 0.7106657021
              },
              {
                "average": 17683.67377,
                "count": 1301550,
                "maximum": 65535,
                "minimum": 1045,
                "name": "Intensity",
                "position": 3,
                "stddev": 13166.31054,
                "variance": 173351733.2
              },
              {
                "average": 1.000019208,
                "count": 1301550,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004382637717,
                "variance": 1.920751336e-05
              },
              {
                "average": 1.000038416,
                "count": 1301550,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006197926172,
                "variance": 3.841428883e-05
              },
              {
                "average": 0.501430602,
                "count": 1301550,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999981455,
                "variance": 0.2499981455
              },
              {
                "average": 0.0004671353386,
                "count": 1301550,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02160827346,
                "variance": 0.0004669174819
              },
              {
                "average": 4.773254965,
                "count": 1301550,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.760135052,
                "variance": 14.13861561
              },
              {
                "average": 1.405799479,
                "count": 1301550,
                "maximum": 21.31800079,
                "minimum": -16.02599907,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.862755276,
                "variance": 78.54843108
              },
              {
                "average": 0.4958772233,
                "count": 1301550,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999831945,
                "variance": 0.2499831948
              },
              {
                "average": 597.1730337,
                "count": 1301550,
                "maximum": 751,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 79.79678657,
                "variance": 6367.527147
              },
              {
                "average": 220866832.3,
                "count": 1301550,
                "maximum": 222303711.2,
                "minimum": 220475789.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 749223.2767,
                "variance": 561335518400.0
              },
              {
                "average": 0.4958772233,
                "count": 1301550,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999831945,
                "variance": 0.2499831948
              },
              {
                "average": 0,
                "count": 1301550,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1301550,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1301550,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08403365218,
                "count": 1301550,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2774383835,
                "variance": 0.07697205662
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228381.3053,
              2304723.988,
              1.161562927,
              -228016.1653,
              2305171.808,
              11.38156293
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228381.30532930978,
                    2304723.9883616967,
                    1.161562926992723
                  ],
                  [
                    -228381.30532930978,
                    2305171.808361697,
                    1.161562926992723
                  ],
                  [
                    -228016.16532930976,
                    2305171.808361697,
                    11.381562926992725
                  ],
                  [
                    -228016.16532930976,
                    2304723.9883616967,
                    11.381562926992725
                  ],
                  [
                    -228381.30532930978,
                    2304723.9883616967,
                    1.161562926992723
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:31+00:00",
            "end_time": "2018-09-08T21:03:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0824.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.00596075846593,
              70.63794458454187,
              10.580474699344816
            ],
            [
              -160.00715880998715,
              70.642510822954,
              10.580474699344816
            ],
            [
              -159.99348377496386,
              70.64293903692062,
              18.480474699344814
            ],
            [
              -159.9922884210469,
              70.63837270167862,
              18.480474699344814
            ],
            [
              -160.00596075846593,
              70.63794458454187,
              10.580474699344816
            ]
          ]
        ]
      },
      "bbox": [
        -160.0071588,
        70.63794458,
        10.5804747,
        -159.9922884,
        70.64293904,
        18.4804747
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:56Z",
        "pc:count": 5923909,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226356.5167,
            "count": 5923909,
            "maximum": -226107.5516,
            "minimum": -226626.2716,
            "name": "X",
            "position": 0,
            "stddev": 137.9679208,
            "variance": 19035.14716
          },
          {
            "average": 2305185.957,
            "count": 5923909,
            "maximum": 2305442.538,
            "minimum": 2304941.398,
            "name": "Y",
            "position": 1,
            "stddev": 129.6309869,
            "variance": 16804.19275
          },
          {
            "average": 12.39357124,
            "count": 5923909,
            "maximum": 18.4804747,
            "minimum": 10.5804747,
            "name": "Z",
            "position": 2,
            "stddev": 0.8444306509,
            "variance": 0.7130631242
          },
          {
            "average": 42363.13309,
            "count": 5923909,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10651.5402,
            "variance": 113455308.7
          },
          {
            "average": 1.001373249,
            "count": 5923909,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03723195028,
            "variance": 0.001386218122
          },
          {
            "average": 1.002745822,
            "count": 5923909,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05275270758,
            "variance": 0.002782848157
          },
          {
            "average": 0.5077652273,
            "count": 5923909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999397398,
            "variance": 0.2499397434
          },
          {
            "average": 0.0002849469835,
            "count": 5923909,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01687796898,
            "variance": 0.0002848658368
          },
          {
            "average": 1.210269604,
            "count": 5923909,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.419407354,
            "variance": 0.1759025286
          },
          {
            "average": -4.511758697,
            "count": 5923909,
            "maximum": 16.49399948,
            "minimum": -20.74799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.04890421,
            "variance": 122.0782843
          },
          {
            "average": 0.4714192943,
            "count": 5923909,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499182517,
            "variance": 0.2491831853
          },
          {
            "average": 601.7530418,
            "count": 5923909,
            "maximum": 752,
            "minimum": 552,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 83.86806156,
            "variance": 7033.85175
          },
          {
            "average": 220912295.5,
            "count": 5923909,
            "maximum": 222304096,
            "minimum": 220475387.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 779264.9769,
            "variance": 607253904200.0
          },
          {
            "average": 0.4714192943,
            "count": 5923909,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499182517,
            "variance": 0.2491831853
          },
          {
            "average": 0,
            "count": 5923909,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5923909,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5923909,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2443840714,
            "count": 5923909,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4297214542,
            "variance": 0.1846605282
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226626.2716,
          2304941.398,
          10.5804747,
          -226107.5516,
          2305442.538,
          18.4804747
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226626.27160489256,
                2304941.397631742,
                10.580474699344816
              ],
              [
                -226626.27160489256,
                2305442.5376317417,
                10.580474699344816
              ],
              [
                -226107.5516048926,
                2305442.5376317417,
                18.480474699344814
              ],
              [
                -226107.5516048926,
                2304941.397631742,
                18.480474699344814
              ],
              [
                -226626.27160489256,
                2304941.397631742,
                10.580474699344816
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:56+00:00",
        "end_time": "2018-09-08T20:56:27+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0824.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0824.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0824.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0824.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0071588,
            70.63794458,
            10.5804747,
            -159.9922884,
            70.64293904,
            18.4804747
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.00596075846593,
                  70.63794458454187,
                  10.580474699344816
                ],
                [
                  -160.00715880998715,
                  70.642510822954,
                  10.580474699344816
                ],
                [
                  -159.99348377496386,
                  70.64293903692062,
                  18.480474699344814
                ],
                [
                  -159.9922884210469,
                  70.63837270167862,
                  18.480474699344814
                ],
                [
                  -160.00596075846593,
                  70.63794458454187,
                  10.580474699344816
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0824.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0824.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:56Z",
            "pc:count": 5923909,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226356.5167,
                "count": 5923909,
                "maximum": -226107.5516,
                "minimum": -226626.2716,
                "name": "X",
                "position": 0,
                "stddev": 137.9679208,
                "variance": 19035.14716
              },
              {
                "average": 2305185.957,
                "count": 5923909,
                "maximum": 2305442.538,
                "minimum": 2304941.398,
                "name": "Y",
                "position": 1,
                "stddev": 129.6309869,
                "variance": 16804.19275
              },
              {
                "average": 12.39357124,
                "count": 5923909,
                "maximum": 18.4804747,
                "minimum": 10.5804747,
                "name": "Z",
                "position": 2,
                "stddev": 0.8444306509,
                "variance": 0.7130631242
              },
              {
                "average": 42363.13309,
                "count": 5923909,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10651.5402,
                "variance": 113455308.7
              },
              {
                "average": 1.001373249,
                "count": 5923909,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03723195028,
                "variance": 0.001386218122
              },
              {
                "average": 1.002745822,
                "count": 5923909,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05275270758,
                "variance": 0.002782848157
              },
              {
                "average": 0.5077652273,
                "count": 5923909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999397398,
                "variance": 0.2499397434
              },
              {
                "average": 0.0002849469835,
                "count": 5923909,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01687796898,
                "variance": 0.0002848658368
              },
              {
                "average": 1.210269604,
                "count": 5923909,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.419407354,
                "variance": 0.1759025286
              },
              {
                "average": -4.511758697,
                "count": 5923909,
                "maximum": 16.49399948,
                "minimum": -20.74799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.04890421,
                "variance": 122.0782843
              },
              {
                "average": 0.4714192943,
                "count": 5923909,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499182517,
                "variance": 0.2491831853
              },
              {
                "average": 601.7530418,
                "count": 5923909,
                "maximum": 752,
                "minimum": 552,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 83.86806156,
                "variance": 7033.85175
              },
              {
                "average": 220912295.5,
                "count": 5923909,
                "maximum": 222304096,
                "minimum": 220475387.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 779264.9769,
                "variance": 607253904200.0
              },
              {
                "average": 0.4714192943,
                "count": 5923909,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499182517,
                "variance": 0.2491831853
              },
              {
                "average": 0,
                "count": 5923909,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5923909,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5923909,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2443840714,
                "count": 5923909,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4297214542,
                "variance": 0.1846605282
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226626.2716,
              2304941.398,
              10.5804747,
              -226107.5516,
              2305442.538,
              18.4804747
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226626.27160489256,
                    2304941.397631742,
                    10.580474699344816
                  ],
                  [
                    -226626.27160489256,
                    2305442.5376317417,
                    10.580474699344816
                  ],
                  [
                    -226107.5516048926,
                    2305442.5376317417,
                    18.480474699344814
                  ],
                  [
                    -226107.5516048926,
                    2304941.397631742,
                    18.480474699344814
                  ],
                  [
                    -226626.27160489256,
                    2304941.397631742,
                    10.580474699344816
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:56+00:00",
            "end_time": "2018-09-08T20:56:27+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0796.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0433959408174,
              70.63424893865135,
              -11.367605648916378
            ],
            [
              -160.04460086026657,
              70.63881338448968,
              -11.367605648916378
            ],
            [
              -160.0309292546663,
              70.63924423718181,
              24.292394351083626
            ],
            [
              -160.02972703043122,
              70.6346796939753,
              24.292394351083626
            ],
            [
              -160.0433959408174,
              70.63424893865135,
              -11.367605648916378
            ]
          ]
        ]
      },
      "bbox": [
        -160.0446009,
        70.63424894,
        -11.36760565,
        -160.029727,
        70.63924424,
        24.29239435
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:36Z",
        "pc:count": 6045286,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227803.0408,
            "count": 6045286,
            "maximum": -227552.9534,
            "minimum": -228071.6534,
            "name": "X",
            "position": 0,
            "stddev": 133.3794802,
            "variance": 17790.08575
          },
          {
            "average": 2304907.868,
            "count": 6045286,
            "maximum": 2305168.247,
            "minimum": 2304667.267,
            "name": "Y",
            "position": 1,
            "stddev": 127.0130846,
            "variance": 16132.32367
          },
          {
            "average": 7.381276404,
            "count": 6045286,
            "maximum": 24.29239435,
            "minimum": -11.36760565,
            "name": "Z",
            "position": 2,
            "stddev": 3.476425746,
            "variance": 12.08553596
          },
          {
            "average": 32077.1371,
            "count": 6045286,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14212.05568,
            "variance": 201982526.7
          },
          {
            "average": 1.01640369,
            "count": 6045286,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1299293673,
            "variance": 0.01688164049
          },
          {
            "average": 1.03282872,
            "count": 6045286,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1843748101,
            "variance": 0.0339940706
          },
          {
            "average": 0.4967295178,
            "count": 6045286,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999893452,
            "variance": 0.2499893453
          },
          {
            "average": 0.0002029680647,
            "count": 6045286,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01424524139,
            "variance": 0.0002029269022
          },
          {
            "average": 2.009699458,
            "count": 6045286,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.099693576,
            "variance": 4.408713115
          },
          {
            "average": 3.528560345,
            "count": 6045286,
            "maximum": 21.35400009,
            "minimum": -16.22999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.98737816,
            "variance": 120.7224789
          },
          {
            "average": 0.5107976695,
            "count": 6045286,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998834381,
            "variance": 0.2498834517
          },
          {
            "average": 599.7097454,
            "count": 6045286,
            "maximum": 751,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 81.7540168,
            "variance": 6683.719264
          },
          {
            "average": 220891246.1,
            "count": 6045286,
            "maximum": 222303716.7,
            "minimum": 220475783.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 765751.2148,
            "variance": 586374922900.0
          },
          {
            "average": 0.5107976695,
            "count": 6045286,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998834381,
            "variance": 0.2498834517
          },
          {
            "average": 0,
            "count": 6045286,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6045286,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6045286,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1973178771,
            "count": 6045286,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3979743191,
            "variance": 0.1583835587
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228071.6534,
          2304667.267,
          -11.36760565,
          -227552.9534,
          2305168.247,
          24.29239435
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228071.65335909845,
                2304667.267285389,
                -11.367605648916378
              ],
              [
                -228071.65335909845,
                2305168.2472853893,
                -11.367605648916378
              ],
              [
                -227552.95335909844,
                2305168.2472853893,
                24.292394351083626
              ],
              [
                -227552.95335909844,
                2304667.267285389,
                24.292394351083626
              ],
              [
                -228071.65335909845,
                2304667.267285389,
                -11.367605648916378
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:36+00:00",
        "end_time": "2018-09-08T21:03:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0796.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0796.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0796.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0796.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0446009,
            70.63424894,
            -11.36760565,
            -160.029727,
            70.63924424,
            24.29239435
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0433959408174,
                  70.63424893865135,
                  -11.367605648916378
                ],
                [
                  -160.04460086026657,
                  70.63881338448968,
                  -11.367605648916378
                ],
                [
                  -160.0309292546663,
                  70.63924423718181,
                  24.292394351083626
                ],
                [
                  -160.02972703043122,
                  70.6346796939753,
                  24.292394351083626
                ],
                [
                  -160.0433959408174,
                  70.63424893865135,
                  -11.367605648916378
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0796.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0796.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:36Z",
            "pc:count": 6045286,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227803.0408,
                "count": 6045286,
                "maximum": -227552.9534,
                "minimum": -228071.6534,
                "name": "X",
                "position": 0,
                "stddev": 133.3794802,
                "variance": 17790.08575
              },
              {
                "average": 2304907.868,
                "count": 6045286,
                "maximum": 2305168.247,
                "minimum": 2304667.267,
                "name": "Y",
                "position": 1,
                "stddev": 127.0130846,
                "variance": 16132.32367
              },
              {
                "average": 7.381276404,
                "count": 6045286,
                "maximum": 24.29239435,
                "minimum": -11.36760565,
                "name": "Z",
                "position": 2,
                "stddev": 3.476425746,
                "variance": 12.08553596
              },
              {
                "average": 32077.1371,
                "count": 6045286,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14212.05568,
                "variance": 201982526.7
              },
              {
                "average": 1.01640369,
                "count": 6045286,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1299293673,
                "variance": 0.01688164049
              },
              {
                "average": 1.03282872,
                "count": 6045286,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1843748101,
                "variance": 0.0339940706
              },
              {
                "average": 0.4967295178,
                "count": 6045286,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999893452,
                "variance": 0.2499893453
              },
              {
                "average": 0.0002029680647,
                "count": 6045286,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01424524139,
                "variance": 0.0002029269022
              },
              {
                "average": 2.009699458,
                "count": 6045286,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.099693576,
                "variance": 4.408713115
              },
              {
                "average": 3.528560345,
                "count": 6045286,
                "maximum": 21.35400009,
                "minimum": -16.22999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.98737816,
                "variance": 120.7224789
              },
              {
                "average": 0.5107976695,
                "count": 6045286,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998834381,
                "variance": 0.2498834517
              },
              {
                "average": 599.7097454,
                "count": 6045286,
                "maximum": 751,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 81.7540168,
                "variance": 6683.719264
              },
              {
                "average": 220891246.1,
                "count": 6045286,
                "maximum": 222303716.7,
                "minimum": 220475783.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 765751.2148,
                "variance": 586374922900.0
              },
              {
                "average": 0.5107976695,
                "count": 6045286,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998834381,
                "variance": 0.2498834517
              },
              {
                "average": 0,
                "count": 6045286,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6045286,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6045286,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1973178771,
                "count": 6045286,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3979743191,
                "variance": 0.1583835587
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228071.6534,
              2304667.267,
              -11.36760565,
              -227552.9534,
              2305168.247,
              24.29239435
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228071.65335909845,
                    2304667.267285389,
                    -11.367605648916378
                  ],
                  [
                    -228071.65335909845,
                    2305168.2472853893,
                    -11.367605648916378
                  ],
                  [
                    -227552.95335909844,
                    2305168.2472853893,
                    24.292394351083626
                  ],
                  [
                    -227552.95335909844,
                    2304667.267285389,
                    24.292394351083626
                  ],
                  [
                    -228071.65335909845,
                    2304667.267285389,
                    -11.367605648916378
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:36+00:00",
            "end_time": "2018-09-08T21:03:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0825.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9936174741786,
              70.63780964688517,
              9.167408697932899
            ],
            [
              -159.9948131108927,
              70.64237614076154,
              9.167408697932899
            ],
            [
              -159.98114267177795,
              70.64280332759668,
              43.0874086979329
            ],
            [
              -159.97994973199079,
              70.638236737118,
              43.0874086979329
            ],
            [
              -159.9936174741786,
              70.63780964688517,
              9.167408697932899
            ]
          ]
        ]
      },
      "bbox": [
        -159.9948131,
        70.63780965,
        9.167408698,
        -159.9799497,
        70.64280333,
        43.0874087
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:08Z",
        "pc:count": 7291816,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225914.8201,
            "count": 7291816,
            "maximum": -225644.5714,
            "minimum": -226163.1114,
            "name": "X",
            "position": 0,
            "stddev": 135.4491554,
            "variance": 18346.47369
          },
          {
            "average": 2305140.623,
            "count": 7291816,
            "maximum": 2305385.791,
            "minimum": 2304884.631,
            "name": "Y",
            "position": 1,
            "stddev": 133.3813677,
            "variance": 17790.58926
          },
          {
            "average": 10.81383396,
            "count": 7291816,
            "maximum": 43.0874087,
            "minimum": 9.167408698,
            "name": "Z",
            "position": 2,
            "stddev": 0.7980382943,
            "variance": 0.6368651192
          },
          {
            "average": 34690.6367,
            "count": 7291816,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 11846.83664,
            "variance": 140347538.3
          },
          {
            "average": 1.000000549,
            "count": 7291816,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0007406483433,
            "variance": 5.485599684e-07
          },
          {
            "average": 1.000001097,
            "count": 7291816,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001047434645,
            "variance": 1.097119335e-06
          },
          {
            "average": 0.5025523134,
            "count": 7291816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999935199,
            "variance": 0.24999352
          },
          {
            "average": 0.0001966588296,
            "count": 7291816,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01402213186,
            "variance": 0.0001966201818
          },
          {
            "average": 1.179296214,
            "count": 7291816,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3948924591,
            "variance": 0.1559400542
          },
          {
            "average": -1.41949879,
            "count": 7291816,
            "maximum": 21.29999924,
            "minimum": -20.76600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.764040674,
            "variance": 95.33649028
          },
          {
            "average": 0.4882543663,
            "count": 7291816,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998620553,
            "variance": 0.2498620744
          },
          {
            "average": 581.4811871,
            "count": 7291816,
            "maximum": 753,
            "minimum": 553,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 64.0869655,
            "variance": 4107.139147
          },
          {
            "average": 220702138.6,
            "count": 7291816,
            "maximum": 222304588.9,
            "minimum": 220475577.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 601211.4808,
            "variance": 361455244600.0
          },
          {
            "average": 0.4882543663,
            "count": 7291816,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998620553,
            "variance": 0.2498620744
          },
          {
            "average": 0,
            "count": 7291816,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7291816,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7291816,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1821474925,
            "count": 7291816,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3859660657,
            "variance": 0.1489698039
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226163.1114,
          2304884.631,
          9.167408698,
          -225644.5714,
          2305385.791,
          43.0874087
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226163.1113963638,
                2304884.630688887,
                9.167408697932899
              ],
              [
                -226163.1113963638,
                2305385.7906888872,
                9.167408697932899
              ],
              [
                -225644.5713963638,
                2305385.7906888872,
                43.0874086979329
              ],
              [
                -225644.5713963638,
                2304884.630688887,
                43.0874086979329
              ],
              [
                -226163.1113963638,
                2304884.630688887,
                9.167408697932899
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:08+00:00",
        "end_time": "2018-09-08T20:59:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0825.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0825.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0825.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0825.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9948131,
            70.63780965,
            9.167408698,
            -159.9799497,
            70.64280333,
            43.0874087
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9936174741786,
                  70.63780964688517,
                  9.167408697932899
                ],
                [
                  -159.9948131108927,
                  70.64237614076154,
                  9.167408697932899
                ],
                [
                  -159.98114267177795,
                  70.64280332759668,
                  43.0874086979329
                ],
                [
                  -159.97994973199079,
                  70.638236737118,
                  43.0874086979329
                ],
                [
                  -159.9936174741786,
                  70.63780964688517,
                  9.167408697932899
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0825.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0825.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:08Z",
            "pc:count": 7291816,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225914.8201,
                "count": 7291816,
                "maximum": -225644.5714,
                "minimum": -226163.1114,
                "name": "X",
                "position": 0,
                "stddev": 135.4491554,
                "variance": 18346.47369
              },
              {
                "average": 2305140.623,
                "count": 7291816,
                "maximum": 2305385.791,
                "minimum": 2304884.631,
                "name": "Y",
                "position": 1,
                "stddev": 133.3813677,
                "variance": 17790.58926
              },
              {
                "average": 10.81383396,
                "count": 7291816,
                "maximum": 43.0874087,
                "minimum": 9.167408698,
                "name": "Z",
                "position": 2,
                "stddev": 0.7980382943,
                "variance": 0.6368651192
              },
              {
                "average": 34690.6367,
                "count": 7291816,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 11846.83664,
                "variance": 140347538.3
              },
              {
                "average": 1.000000549,
                "count": 7291816,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0007406483433,
                "variance": 5.485599684e-07
              },
              {
                "average": 1.000001097,
                "count": 7291816,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001047434645,
                "variance": 1.097119335e-06
              },
              {
                "average": 0.5025523134,
                "count": 7291816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999935199,
                "variance": 0.24999352
              },
              {
                "average": 0.0001966588296,
                "count": 7291816,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01402213186,
                "variance": 0.0001966201818
              },
              {
                "average": 1.179296214,
                "count": 7291816,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3948924591,
                "variance": 0.1559400542
              },
              {
                "average": -1.41949879,
                "count": 7291816,
                "maximum": 21.29999924,
                "minimum": -20.76600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.764040674,
                "variance": 95.33649028
              },
              {
                "average": 0.4882543663,
                "count": 7291816,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998620553,
                "variance": 0.2498620744
              },
              {
                "average": 581.4811871,
                "count": 7291816,
                "maximum": 753,
                "minimum": 553,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 64.0869655,
                "variance": 4107.139147
              },
              {
                "average": 220702138.6,
                "count": 7291816,
                "maximum": 222304588.9,
                "minimum": 220475577.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 601211.4808,
                "variance": 361455244600.0
              },
              {
                "average": 0.4882543663,
                "count": 7291816,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998620553,
                "variance": 0.2498620744
              },
              {
                "average": 0,
                "count": 7291816,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7291816,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7291816,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1821474925,
                "count": 7291816,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3859660657,
                "variance": 0.1489698039
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226163.1114,
              2304884.631,
              9.167408698,
              -225644.5714,
              2305385.791,
              43.0874087
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226163.1113963638,
                    2304884.630688887,
                    9.167408697932899
                  ],
                  [
                    -226163.1113963638,
                    2305385.7906888872,
                    9.167408697932899
                  ],
                  [
                    -225644.5713963638,
                    2305385.7906888872,
                    43.0874086979329
                  ],
                  [
                    -225644.5713963638,
                    2304884.630688887,
                    43.0874086979329
                  ],
                  [
                    -226163.1113963638,
                    2304884.630688887,
                    9.167408697932899
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:08+00:00",
            "end_time": "2018-09-08T20:59:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0797.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.03105052641453,
              70.63411650693965,
              -0.73674897979754
            ],
            [
              -160.0322532243746,
              70.63868193767033,
              -0.73674897979754
            ],
            [
              -160.0185830473082,
              70.63911186163722,
              322.00325102020247
            ],
            [
              -160.01738304494137,
              70.634546333728,
              322.00325102020247
            ],
            [
              -160.03105052641453,
              70.63411650693965,
              -0.73674897979754
            ]
          ]
        ]
      },
      "bbox": [
        -160.0322532,
        70.63411651,
        -0.7367489798,
        -160.017383,
        70.63911186,
        322.003251
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:06Z",
        "pc:count": 5786466,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227353.0188,
            "count": 5786466,
            "maximum": -227089.7055,
            "minimum": -227608.3455,
            "name": "X",
            "position": 0,
            "stddev": 136.5133345,
            "variance": 18635.8905
          },
          {
            "average": 2304863.04,
            "count": 5786466,
            "maximum": 2305111.578,
            "minimum": 2304610.498,
            "name": "Y",
            "position": 1,
            "stddev": 133.3835836,
            "variance": 17791.18038
          },
          {
            "average": 14.44867845,
            "count": 5786466,
            "maximum": 322.003251,
            "minimum": -0.7367489798,
            "name": "Z",
            "position": 2,
            "stddev": 2.256936447,
            "variance": 5.093762124
          },
          {
            "average": 38205.68055,
            "count": 5786466,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12711.66374,
            "variance": 161586395.1
          },
          {
            "average": 1.00927008,
            "count": 5786466,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.09928987358,
            "variance": 0.009858478996
          },
          {
            "average": 1.018533246,
            "count": 5786466,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1421825438,
            "variance": 0.02021587577
          },
          {
            "average": 0.5019101469,
            "count": 5786466,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999963945,
            "variance": 0.2499963945
          },
          {
            "average": 0.0001975298913,
            "count": 5786466,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01405314582,
            "variance": 0.0001974909074
          },
          {
            "average": 1.425189053,
            "count": 5786466,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9735686641,
            "variance": 0.9478359438
          },
          {
            "average": 0.3771381587,
            "count": 5786466,
            "maximum": 21.43199921,
            "minimum": -20.76600075,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.42656311,
            "variance": 108.7132184
          },
          {
            "average": 0.5198518405,
            "count": 5786466,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996057922,
            "variance": 0.2496059476
          },
          {
            "average": 586.2946842,
            "count": 5786466,
            "maximum": 752,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 71.12413096,
            "variance": 5058.642005
          },
          {
            "average": 220763570.6,
            "count": 5786466,
            "maximum": 222304106.9,
            "minimum": 220475776.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 665418.4337,
            "variance": 442781691900.0
          },
          {
            "average": 0.5198518405,
            "count": 5786466,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996057922,
            "variance": 0.2496059476
          },
          {
            "average": 0,
            "count": 5786466,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5786466,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5786466,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2253105782,
            "count": 5786466,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4177867299,
            "variance": 0.1745457517
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227608.3455,
          2304610.498,
          -0.7367489798,
          -227089.7055,
          2305111.578,
          322.003251
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227608.3454754924,
                2304610.4976156047,
                -0.73674897979754
              ],
              [
                -227608.3454754924,
                2305111.5776156047,
                -0.73674897979754
              ],
              [
                -227089.70547549237,
                2305111.5776156047,
                322.00325102020247
              ],
              [
                -227089.70547549237,
                2304610.4976156047,
                322.00325102020247
              ],
              [
                -227608.3454754924,
                2304610.4976156047,
                -0.73674897979754
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:06+00:00",
        "end_time": "2018-09-08T21:02:56+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0797.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0797.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0797.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0797.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0322532,
            70.63411651,
            -0.7367489798,
            -160.017383,
            70.63911186,
            322.003251
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.03105052641453,
                  70.63411650693965,
                  -0.73674897979754
                ],
                [
                  -160.0322532243746,
                  70.63868193767033,
                  -0.73674897979754
                ],
                [
                  -160.0185830473082,
                  70.63911186163722,
                  322.00325102020247
                ],
                [
                  -160.01738304494137,
                  70.634546333728,
                  322.00325102020247
                ],
                [
                  -160.03105052641453,
                  70.63411650693965,
                  -0.73674897979754
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0797.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0797.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:06Z",
            "pc:count": 5786466,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227353.0188,
                "count": 5786466,
                "maximum": -227089.7055,
                "minimum": -227608.3455,
                "name": "X",
                "position": 0,
                "stddev": 136.5133345,
                "variance": 18635.8905
              },
              {
                "average": 2304863.04,
                "count": 5786466,
                "maximum": 2305111.578,
                "minimum": 2304610.498,
                "name": "Y",
                "position": 1,
                "stddev": 133.3835836,
                "variance": 17791.18038
              },
              {
                "average": 14.44867845,
                "count": 5786466,
                "maximum": 322.003251,
                "minimum": -0.7367489798,
                "name": "Z",
                "position": 2,
                "stddev": 2.256936447,
                "variance": 5.093762124
              },
              {
                "average": 38205.68055,
                "count": 5786466,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12711.66374,
                "variance": 161586395.1
              },
              {
                "average": 1.00927008,
                "count": 5786466,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.09928987358,
                "variance": 0.009858478996
              },
              {
                "average": 1.018533246,
                "count": 5786466,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1421825438,
                "variance": 0.02021587577
              },
              {
                "average": 0.5019101469,
                "count": 5786466,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999963945,
                "variance": 0.2499963945
              },
              {
                "average": 0.0001975298913,
                "count": 5786466,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01405314582,
                "variance": 0.0001974909074
              },
              {
                "average": 1.425189053,
                "count": 5786466,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9735686641,
                "variance": 0.9478359438
              },
              {
                "average": 0.3771381587,
                "count": 5786466,
                "maximum": 21.43199921,
                "minimum": -20.76600075,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.42656311,
                "variance": 108.7132184
              },
              {
                "average": 0.5198518405,
                "count": 5786466,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996057922,
                "variance": 0.2496059476
              },
              {
                "average": 586.2946842,
                "count": 5786466,
                "maximum": 752,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 71.12413096,
                "variance": 5058.642005
              },
              {
                "average": 220763570.6,
                "count": 5786466,
                "maximum": 222304106.9,
                "minimum": 220475776.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 665418.4337,
                "variance": 442781691900.0
              },
              {
                "average": 0.5198518405,
                "count": 5786466,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996057922,
                "variance": 0.2496059476
              },
              {
                "average": 0,
                "count": 5786466,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5786466,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5786466,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2253105782,
                "count": 5786466,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4177867299,
                "variance": 0.1745457517
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227608.3455,
              2304610.498,
              -0.7367489798,
              -227089.7055,
              2305111.578,
              322.003251
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227608.3454754924,
                    2304610.4976156047,
                    -0.73674897979754
                  ],
                  [
                    -227608.3454754924,
                    2305111.5776156047,
                    -0.73674897979754
                  ],
                  [
                    -227089.70547549237,
                    2305111.5776156047,
                    322.00325102020247
                  ],
                  [
                    -227089.70547549237,
                    2304610.4976156047,
                    322.00325102020247
                  ],
                  [
                    -227608.3454754924,
                    2304610.4976156047,
                    -0.73674897979754
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:06+00:00",
            "end_time": "2018-09-08T21:02:56+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0826.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.98127266989627,
              70.63767355441901,
              3.248300645696646
            ],
            [
              -159.98246574835395,
              70.64223975685903,
              3.248300645696646
            ],
            [
              -159.96878936106708,
              70.6426662455145,
              12.788300645696648
            ],
            [
              -159.9675989806158,
              70.63809994663694,
              12.788300645696648
            ],
            [
              -159.98127266989627,
              70.63767355441901,
              3.248300645696646
            ]
          ]
        ]
      },
      "bbox": [
        -159.9824657,
        70.63767355,
        3.248300646,
        -159.967599,
        70.64266625,
        12.78830065
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:17Z",
        "pc:count": 7179758,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225455.8898,
            "count": 7179758,
            "maximum": -225181.1321,
            "minimum": -225699.8921,
            "name": "X",
            "position": 0,
            "stddev": 130.9916098,
            "variance": 17158.80183
          },
          {
            "average": 2305074.274,
            "count": 7179758,
            "maximum": 2305328.939,
            "minimum": 2304827.819,
            "name": "Y",
            "position": 1,
            "stddev": 130.8581093,
            "variance": 17123.84478
          },
          {
            "average": 9.847324096,
            "count": 7179758,
            "maximum": 12.78830065,
            "minimum": 3.248300646,
            "name": "Z",
            "position": 2,
            "stddev": 0.9312125427,
            "variance": 0.8671567997
          },
          {
            "average": 41552.98507,
            "count": 7179758,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 11111.4629,
            "variance": 123464607.9
          },
          {
            "average": 1,
            "count": 7179758,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 7179758,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4918539037,
            "count": 7179758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999336715,
            "variance": 0.2499336759
          },
          {
            "average": 0.0002370553436,
            "count": 7179758,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01539477773,
            "variance": 0.0002369991814
          },
          {
            "average": 1.171730858,
            "count": 7179758,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.444377478,
            "variance": 0.1974713429
          },
          {
            "average": 4.959366673,
            "count": 7179758,
            "maximum": 21.34799957,
            "minimum": -16.59600067,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.86041892,
            "variance": 117.9486991
          },
          {
            "average": 0.4996779836,
            "count": 7179758,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999311,
            "variance": 0.2499999311
          },
          {
            "average": 594.4138052,
            "count": 7179758,
            "maximum": 753,
            "minimum": 553,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 77.84752923,
            "variance": 6060.237807
          },
          {
            "average": 220832517.1,
            "count": 7179758,
            "maximum": 222304597.1,
            "minimum": 220475583.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 724169.9318,
            "variance": 524422090100.0
          },
          {
            "average": 0.4996779836,
            "count": 7179758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999311,
            "variance": 0.2499999311
          },
          {
            "average": 0,
            "count": 7179758,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7179758,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7179758,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2535657887,
            "count": 7179758,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4350519577,
            "variance": 0.1892702059
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225699.8921,
          2304827.819,
          3.248300646,
          -225181.1321,
          2305328.939,
          12.78830065
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225699.89206783054,
                2304827.8186950115,
                3.248300645696646
              ],
              [
                -225699.89206783054,
                2305328.9386950117,
                3.248300645696646
              ],
              [
                -225181.13206783053,
                2305328.9386950117,
                12.788300645696648
              ],
              [
                -225181.13206783053,
                2304827.8186950115,
                12.788300645696648
              ],
              [
                -225699.89206783054,
                2304827.8186950115,
                3.248300645696646
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:17+00:00",
        "end_time": "2018-09-08T20:59:43+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0826.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0826.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0826.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0826.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9824657,
            70.63767355,
            3.248300646,
            -159.967599,
            70.64266625,
            12.78830065
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.98127266989627,
                  70.63767355441901,
                  3.248300645696646
                ],
                [
                  -159.98246574835395,
                  70.64223975685903,
                  3.248300645696646
                ],
                [
                  -159.96878936106708,
                  70.6426662455145,
                  12.788300645696648
                ],
                [
                  -159.9675989806158,
                  70.63809994663694,
                  12.788300645696648
                ],
                [
                  -159.98127266989627,
                  70.63767355441901,
                  3.248300645696646
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0826.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0826.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:17Z",
            "pc:count": 7179758,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225455.8898,
                "count": 7179758,
                "maximum": -225181.1321,
                "minimum": -225699.8921,
                "name": "X",
                "position": 0,
                "stddev": 130.9916098,
                "variance": 17158.80183
              },
              {
                "average": 2305074.274,
                "count": 7179758,
                "maximum": 2305328.939,
                "minimum": 2304827.819,
                "name": "Y",
                "position": 1,
                "stddev": 130.8581093,
                "variance": 17123.84478
              },
              {
                "average": 9.847324096,
                "count": 7179758,
                "maximum": 12.78830065,
                "minimum": 3.248300646,
                "name": "Z",
                "position": 2,
                "stddev": 0.9312125427,
                "variance": 0.8671567997
              },
              {
                "average": 41552.98507,
                "count": 7179758,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 11111.4629,
                "variance": 123464607.9
              },
              {
                "average": 1,
                "count": 7179758,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 7179758,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4918539037,
                "count": 7179758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999336715,
                "variance": 0.2499336759
              },
              {
                "average": 0.0002370553436,
                "count": 7179758,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01539477773,
                "variance": 0.0002369991814
              },
              {
                "average": 1.171730858,
                "count": 7179758,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.444377478,
                "variance": 0.1974713429
              },
              {
                "average": 4.959366673,
                "count": 7179758,
                "maximum": 21.34799957,
                "minimum": -16.59600067,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.86041892,
                "variance": 117.9486991
              },
              {
                "average": 0.4996779836,
                "count": 7179758,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999311,
                "variance": 0.2499999311
              },
              {
                "average": 594.4138052,
                "count": 7179758,
                "maximum": 753,
                "minimum": 553,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 77.84752923,
                "variance": 6060.237807
              },
              {
                "average": 220832517.1,
                "count": 7179758,
                "maximum": 222304597.1,
                "minimum": 220475583.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 724169.9318,
                "variance": 524422090100.0
              },
              {
                "average": 0.4996779836,
                "count": 7179758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999311,
                "variance": 0.2499999311
              },
              {
                "average": 0,
                "count": 7179758,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7179758,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7179758,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2535657887,
                "count": 7179758,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4350519577,
                "variance": 0.1892702059
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225699.8921,
              2304827.819,
              3.248300646,
              -225181.1321,
              2305328.939,
              12.78830065
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225699.89206783054,
                    2304827.8186950115,
                    3.248300645696646
                  ],
                  [
                    -225699.89206783054,
                    2305328.9386950117,
                    3.248300645696646
                  ],
                  [
                    -225181.13206783053,
                    2305328.9386950117,
                    12.788300645696648
                  ],
                  [
                    -225181.13206783053,
                    2304827.8186950115,
                    12.788300645696648
                  ],
                  [
                    -225699.89206783054,
                    2304827.8186950115,
                    3.248300645696646
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:17+00:00",
            "end_time": "2018-09-08T20:59:43+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0798.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0187092107383,
              70.63398296280315,
              -9.710419453433033
            ],
            [
              -160.0199093994772,
              70.63854828486856,
              -9.710419453433033
            ],
            [
              -160.00623643547544,
              70.63897741277586,
              27.52958054656697
            ],
            [
              -160.00503894289412,
              70.6344119937149,
              27.52958054656697
            ],
            [
              -160.0187092107383,
              70.63398296280315,
              -9.710419453433033
            ]
          ]
        ]
      },
      "bbox": [
        -160.0199094,
        70.63398296,
        -9.710419453,
        -160.0050389,
        70.63897741,
        27.52958055
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:05Z",
        "pc:count": 6309861,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226882.4666,
            "count": 6309861,
            "maximum": -226626.4496,
            "minimum": -227145.1896,
            "name": "X",
            "position": 0,
            "stddev": 136.1100625,
            "variance": 18525.94912
          },
          {
            "average": 2304807.724,
            "count": 6309861,
            "maximum": 2305054.767,
            "minimum": 2304553.707,
            "name": "Y",
            "position": 1,
            "stddev": 129.1584508,
            "variance": 16681.90541
          },
          {
            "average": 12.41329214,
            "count": 6309861,
            "maximum": 27.52958055,
            "minimum": -9.710419453,
            "name": "Z",
            "position": 2,
            "stddev": 1.699977708,
            "variance": 2.889924209
          },
          {
            "average": 38758.36449,
            "count": 6309861,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11544.93062,
            "variance": 133285422.9
          },
          {
            "average": 1.001639339,
            "count": 6309861,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0411353908,
            "variance": 0.001692120377
          },
          {
            "average": 1.00330451,
            "count": 6309861,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05881635171,
            "variance": 0.003459363228
          },
          {
            "average": 0.5083763335,
            "count": 6309861,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999298717,
            "variance": 0.2499298766
          },
          {
            "average": 0.0002161695796,
            "count": 6309861,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01470111848,
            "variance": 0.0002161228846
          },
          {
            "average": 1.23458821,
            "count": 6309861,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4945764998,
            "variance": 0.2446059142
          },
          {
            "average": -3.112237774,
            "count": 6309861,
            "maximum": 16.72800064,
            "minimum": -20.74799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.11816897,
            "variance": 123.6136813
          },
          {
            "average": 0.5066303362,
            "count": 6309861,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999560763,
            "variance": 0.2499560783
          },
          {
            "average": 599.2670343,
            "count": 6309861,
            "maximum": 752,
            "minimum": 554,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 81.57201374,
            "variance": 6653.993426
          },
          {
            "average": 220883837.6,
            "count": 6309861,
            "maximum": 222304105.9,
            "minimum": 220475768.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 760963.0997,
            "variance": 579064839100.0
          },
          {
            "average": 0.5066303362,
            "count": 6309861,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999560763,
            "variance": 0.2499560783
          },
          {
            "average": 0,
            "count": 6309861,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6309861,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6309861,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2163557961,
            "count": 6309861,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4117596295,
            "variance": 0.1695459925
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227145.1896,
          2304553.707,
          -9.710419453,
          -226626.4496,
          2305054.767,
          27.52958055
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227145.18963422786,
                2304553.706742635,
                -9.710419453433033
              ],
              [
                -227145.18963422786,
                2305054.7667426346,
                -9.710419453433033
              ],
              [
                -226626.44963422787,
                2305054.7667426346,
                27.52958054656697
              ],
              [
                -226626.44963422787,
                2304553.706742635,
                27.52958054656697
              ],
              [
                -227145.18963422786,
                2304553.706742635,
                -9.710419453433033
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:05+00:00",
        "end_time": "2018-09-08T21:02:48+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0798.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0798.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0798.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0798.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0199094,
            70.63398296,
            -9.710419453,
            -160.0050389,
            70.63897741,
            27.52958055
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0187092107383,
                  70.63398296280315,
                  -9.710419453433033
                ],
                [
                  -160.0199093994772,
                  70.63854828486856,
                  -9.710419453433033
                ],
                [
                  -160.00623643547544,
                  70.63897741277586,
                  27.52958054656697
                ],
                [
                  -160.00503894289412,
                  70.6344119937149,
                  27.52958054656697
                ],
                [
                  -160.0187092107383,
                  70.63398296280315,
                  -9.710419453433033
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0798.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0798.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:05Z",
            "pc:count": 6309861,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226882.4666,
                "count": 6309861,
                "maximum": -226626.4496,
                "minimum": -227145.1896,
                "name": "X",
                "position": 0,
                "stddev": 136.1100625,
                "variance": 18525.94912
              },
              {
                "average": 2304807.724,
                "count": 6309861,
                "maximum": 2305054.767,
                "minimum": 2304553.707,
                "name": "Y",
                "position": 1,
                "stddev": 129.1584508,
                "variance": 16681.90541
              },
              {
                "average": 12.41329214,
                "count": 6309861,
                "maximum": 27.52958055,
                "minimum": -9.710419453,
                "name": "Z",
                "position": 2,
                "stddev": 1.699977708,
                "variance": 2.889924209
              },
              {
                "average": 38758.36449,
                "count": 6309861,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11544.93062,
                "variance": 133285422.9
              },
              {
                "average": 1.001639339,
                "count": 6309861,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0411353908,
                "variance": 0.001692120377
              },
              {
                "average": 1.00330451,
                "count": 6309861,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05881635171,
                "variance": 0.003459363228
              },
              {
                "average": 0.5083763335,
                "count": 6309861,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999298717,
                "variance": 0.2499298766
              },
              {
                "average": 0.0002161695796,
                "count": 6309861,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01470111848,
                "variance": 0.0002161228846
              },
              {
                "average": 1.23458821,
                "count": 6309861,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4945764998,
                "variance": 0.2446059142
              },
              {
                "average": -3.112237774,
                "count": 6309861,
                "maximum": 16.72800064,
                "minimum": -20.74799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.11816897,
                "variance": 123.6136813
              },
              {
                "average": 0.5066303362,
                "count": 6309861,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999560763,
                "variance": 0.2499560783
              },
              {
                "average": 599.2670343,
                "count": 6309861,
                "maximum": 752,
                "minimum": 554,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 81.57201374,
                "variance": 6653.993426
              },
              {
                "average": 220883837.6,
                "count": 6309861,
                "maximum": 222304105.9,
                "minimum": 220475768.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 760963.0997,
                "variance": 579064839100.0
              },
              {
                "average": 0.5066303362,
                "count": 6309861,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999560763,
                "variance": 0.2499560783
              },
              {
                "average": 0,
                "count": 6309861,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6309861,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6309861,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2163557961,
                "count": 6309861,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4117596295,
                "variance": 0.1695459925
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227145.1896,
              2304553.707,
              -9.710419453,
              -226626.4496,
              2305054.767,
              27.52958055
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227145.18963422786,
                    2304553.706742635,
                    -9.710419453433033
                  ],
                  [
                    -227145.18963422786,
                    2305054.7667426346,
                    -9.710419453433033
                  ],
                  [
                    -226626.44963422787,
                    2305054.7667426346,
                    27.52958054656697
                  ],
                  [
                    -226626.44963422787,
                    2304553.706742635,
                    27.52958054656697
                  ],
                  [
                    -227145.18963422786,
                    2304553.706742635,
                    -9.710419453433033
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:05+00:00",
            "end_time": "2018-09-08T21:02:48+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0827.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.96892817185397,
              70.63753765463228,
              1.248891096868209
            ],
            [
              -159.97011869250738,
              70.64210356546985,
              1.248891096868209
            ],
            [
              -159.9564400483028,
              70.64252924047902,
              10.22889109686821
            ],
            [
              -159.95525222600676,
              70.63796323339479,
              10.22889109686821
            ],
            [
              -159.96892817185397,
              70.63753765463228,
              1.248891096868209
            ]
          ]
        ]
      },
      "bbox": [
        -159.9701187,
        70.63753765,
        1.248891097,
        -159.9552522,
        70.64252924,
        10.2288911
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:21Z",
        "pc:count": 5144196,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -224979.755,
            "count": 5144196,
            "maximum": -224717.8291,
            "minimum": -225236.6691,
            "name": "X",
            "position": 0,
            "stddev": 138.1698589,
            "variance": 19090.90991
          },
          {
            "average": 2305037.511,
            "count": 5144196,
            "maximum": 2305272.195,
            "minimum": 2304771.115,
            "name": "Y",
            "position": 1,
            "stddev": 130.139227,
            "variance": 16936.21839
          },
          {
            "average": 4.94632337,
            "count": 5144196,
            "maximum": 10.2288911,
            "minimum": 1.248891097,
            "name": "Z",
            "position": 2,
            "stddev": 2.580066225,
            "variance": 6.656741726
          },
          {
            "average": 42889.12561,
            "count": 5144196,
            "maximum": 65535,
            "minimum": 1045,
            "name": "Intensity",
            "position": 3,
            "stddev": 13682.02289,
            "variance": 187197750.3
          },
          {
            "average": 1,
            "count": 5144196,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5144196,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4957309169,
            "count": 5144196,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999818232,
            "variance": 0.2499818235
          },
          {
            "average": 0.0002602933481,
            "count": 5144196,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01613151097,
            "variance": 0.000260225646
          },
          {
            "average": 1.674782998,
            "count": 5144196,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.931561595,
            "variance": 3.730930196
          },
          {
            "average": 2.406570789,
            "count": 5144196,
            "maximum": 21.42000008,
            "minimum": -16.18199921,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.44353785,
            "variance": 109.0674828
          },
          {
            "average": 0.4954995883,
            "count": 5144196,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999797945,
            "variance": 0.2499797949
          },
          {
            "average": 597.1690311,
            "count": 5144196,
            "maximum": 753,
            "minimum": 553,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 81.20806918,
            "variance": 6594.750501
          },
          {
            "average": 220867890.7,
            "count": 5144196,
            "maximum": 222304601.5,
            "minimum": 220475590.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 750390.4208,
            "variance": 563085783700.0
          },
          {
            "average": 0.4954995883,
            "count": 5144196,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999797945,
            "variance": 0.2499797949
          },
          {
            "average": 0,
            "count": 5144196,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5144196,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5144196,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2138182526,
            "count": 5144196,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.410000049,
            "variance": 0.1681000402
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225236.6691,
          2304771.115,
          1.248891097,
          -224717.8291,
          2305272.195,
          10.2288911
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225236.66906848483,
                2304771.114560981,
                1.248891096868209
              ],
              [
                -225236.66906848483,
                2305272.194560981,
                1.248891096868209
              ],
              [
                -224717.8290684848,
                2305272.194560981,
                10.22889109686821
              ],
              [
                -224717.8290684848,
                2304771.114560981,
                10.22889109686821
              ],
              [
                -225236.66906848483,
                2304771.114560981,
                1.248891096868209
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:21+00:00",
        "end_time": "2018-09-08T20:59:50+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0827.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0827.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0827.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0827.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9701187,
            70.63753765,
            1.248891097,
            -159.9552522,
            70.64252924,
            10.2288911
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.96892817185397,
                  70.63753765463228,
                  1.248891096868209
                ],
                [
                  -159.97011869250738,
                  70.64210356546985,
                  1.248891096868209
                ],
                [
                  -159.9564400483028,
                  70.64252924047902,
                  10.22889109686821
                ],
                [
                  -159.95525222600676,
                  70.63796323339479,
                  10.22889109686821
                ],
                [
                  -159.96892817185397,
                  70.63753765463228,
                  1.248891096868209
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0827.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0827.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:21Z",
            "pc:count": 5144196,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -224979.755,
                "count": 5144196,
                "maximum": -224717.8291,
                "minimum": -225236.6691,
                "name": "X",
                "position": 0,
                "stddev": 138.1698589,
                "variance": 19090.90991
              },
              {
                "average": 2305037.511,
                "count": 5144196,
                "maximum": 2305272.195,
                "minimum": 2304771.115,
                "name": "Y",
                "position": 1,
                "stddev": 130.139227,
                "variance": 16936.21839
              },
              {
                "average": 4.94632337,
                "count": 5144196,
                "maximum": 10.2288911,
                "minimum": 1.248891097,
                "name": "Z",
                "position": 2,
                "stddev": 2.580066225,
                "variance": 6.656741726
              },
              {
                "average": 42889.12561,
                "count": 5144196,
                "maximum": 65535,
                "minimum": 1045,
                "name": "Intensity",
                "position": 3,
                "stddev": 13682.02289,
                "variance": 187197750.3
              },
              {
                "average": 1,
                "count": 5144196,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5144196,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4957309169,
                "count": 5144196,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999818232,
                "variance": 0.2499818235
              },
              {
                "average": 0.0002602933481,
                "count": 5144196,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01613151097,
                "variance": 0.000260225646
              },
              {
                "average": 1.674782998,
                "count": 5144196,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.931561595,
                "variance": 3.730930196
              },
              {
                "average": 2.406570789,
                "count": 5144196,
                "maximum": 21.42000008,
                "minimum": -16.18199921,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.44353785,
                "variance": 109.0674828
              },
              {
                "average": 0.4954995883,
                "count": 5144196,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999797945,
                "variance": 0.2499797949
              },
              {
                "average": 597.1690311,
                "count": 5144196,
                "maximum": 753,
                "minimum": 553,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 81.20806918,
                "variance": 6594.750501
              },
              {
                "average": 220867890.7,
                "count": 5144196,
                "maximum": 222304601.5,
                "minimum": 220475590.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 750390.4208,
                "variance": 563085783700.0
              },
              {
                "average": 0.4954995883,
                "count": 5144196,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999797945,
                "variance": 0.2499797949
              },
              {
                "average": 0,
                "count": 5144196,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5144196,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5144196,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2138182526,
                "count": 5144196,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.410000049,
                "variance": 0.1681000402
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225236.6691,
              2304771.115,
              1.248891097,
              -224717.8291,
              2305272.195,
              10.2288911
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225236.66906848483,
                    2304771.114560981,
                    1.248891096868209
                  ],
                  [
                    -225236.66906848483,
                    2305272.194560981,
                    1.248891096868209
                  ],
                  [
                    -224717.8290684848,
                    2305272.194560981,
                    10.22889109686821
                  ],
                  [
                    -224717.8290684848,
                    2304771.114560981,
                    10.22889109686821
                  ],
                  [
                    -225236.66906848483,
                    2304771.114560981,
                    1.248891096868209
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:21+00:00",
            "end_time": "2018-09-08T20:59:50+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0723.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.06925977797866,
              70.6222237296411,
              -228.47716794961337
            ],
            [
              -160.07046935108792,
              70.62678823277774,
              -228.47716794961337
            ],
            [
              -160.05680591602373,
              70.62722087893734,
              126.6028320503866
            ],
            [
              -160.0555990351397,
              70.62265627809191,
              126.6028320503866
            ],
            [
              -160.06925977797866,
              70.6222237296411,
              -228.47716794961337
            ]
          ]
        ]
      },
      "bbox": [
        -160.0704694,
        70.62222373,
        -228.4771679,
        -160.055599,
        70.62722088,
        126.6028321
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:11Z",
        "pc:count": 8578306,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228908.0675,
            "count": 8578306,
            "maximum": -228646.2952,
            "minimum": -229164.9752,
            "name": "X",
            "position": 0,
            "stddev": 133.1129924,
            "variance": 17719.06875
          },
          {
            "average": 2303703.023,
            "count": 8578306,
            "maximum": 2303948.351,
            "minimum": 2303447.311,
            "name": "Y",
            "position": 1,
            "stddev": 130.3489326,
            "variance": 16990.84424
          },
          {
            "average": 6.45024614,
            "count": 8578306,
            "maximum": 126.6028321,
            "minimum": -228.4771679,
            "name": "Z",
            "position": 2,
            "stddev": 1.435660903,
            "variance": 2.061122228
          },
          {
            "average": 36423.46863,
            "count": 8578306,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 13097.94185,
            "variance": 171556080.8
          },
          {
            "average": 1.000101652,
            "count": 8578306,
            "maximum": 15,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02843895485,
            "variance": 0.0008087741529
          },
          {
            "average": 1.000203304,
            "count": 8578306,
            "maximum": 15,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04821473159,
            "variance": 0.002324660342
          },
          {
            "average": 0.500303673,
            "count": 8578306,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999999369,
            "variance": 0.2499999369
          },
          {
            "average": 0.0001673990179,
            "count": 8578306,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01293719502,
            "variance": 0.000167371015
          },
          {
            "average": 1.178813859,
            "count": 8578306,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4299218144,
            "variance": 0.1848327665
          },
          {
            "average": 1.221433621,
            "count": 8578306,
            "maximum": 21.34799957,
            "minimum": -16.16399956,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.73101405,
            "variance": 115.1546626
          },
          {
            "average": 0.5139047266,
            "count": 8578306,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998066503,
            "variance": 0.2498066877
          },
          {
            "average": 591.4906869,
            "count": 8578306,
            "maximum": 751,
            "minimum": 558,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 70.27594201,
            "variance": 4938.708025
          },
          {
            "average": 220775374.7,
            "count": 8578306,
            "maximum": 222303691.6,
            "minimum": 220476573.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 675175.1032,
            "variance": 455861420000.0
          },
          {
            "average": 0.5139047266,
            "count": 8578306,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998066503,
            "variance": 0.2498066877
          },
          {
            "average": 0,
            "count": 8578306,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8578306,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8578306,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1870602424,
            "count": 8578306,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3899599029,
            "variance": 0.1520687259
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -229164.9752,
          2303447.311,
          -228.4771679,
          -228646.2952,
          2303948.351,
          126.6028321
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -229164.9752134971,
                2303447.310900225,
                -228.47716794961337
              ],
              [
                -229164.9752134971,
                2303948.350900225,
                -228.47716794961337
              ],
              [
                -228646.2952134971,
                2303948.350900225,
                126.6028320503866
              ],
              [
                -228646.2952134971,
                2303447.310900225,
                126.6028320503866
              ],
              [
                -229164.9752134971,
                2303447.310900225,
                -228.47716794961337
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:11+00:00",
        "end_time": "2018-09-08T21:16:13+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0723.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0723.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0723.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0723.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0704694,
            70.62222373,
            -228.4771679,
            -160.055599,
            70.62722088,
            126.6028321
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.06925977797866,
                  70.6222237296411,
                  -228.47716794961337
                ],
                [
                  -160.07046935108792,
                  70.62678823277774,
                  -228.47716794961337
                ],
                [
                  -160.05680591602373,
                  70.62722087893734,
                  126.6028320503866
                ],
                [
                  -160.0555990351397,
                  70.62265627809191,
                  126.6028320503866
                ],
                [
                  -160.06925977797866,
                  70.6222237296411,
                  -228.47716794961337
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0723.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0723.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:11Z",
            "pc:count": 8578306,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228908.0675,
                "count": 8578306,
                "maximum": -228646.2952,
                "minimum": -229164.9752,
                "name": "X",
                "position": 0,
                "stddev": 133.1129924,
                "variance": 17719.06875
              },
              {
                "average": 2303703.023,
                "count": 8578306,
                "maximum": 2303948.351,
                "minimum": 2303447.311,
                "name": "Y",
                "position": 1,
                "stddev": 130.3489326,
                "variance": 16990.84424
              },
              {
                "average": 6.45024614,
                "count": 8578306,
                "maximum": 126.6028321,
                "minimum": -228.4771679,
                "name": "Z",
                "position": 2,
                "stddev": 1.435660903,
                "variance": 2.061122228
              },
              {
                "average": 36423.46863,
                "count": 8578306,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 13097.94185,
                "variance": 171556080.8
              },
              {
                "average": 1.000101652,
                "count": 8578306,
                "maximum": 15,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02843895485,
                "variance": 0.0008087741529
              },
              {
                "average": 1.000203304,
                "count": 8578306,
                "maximum": 15,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04821473159,
                "variance": 0.002324660342
              },
              {
                "average": 0.500303673,
                "count": 8578306,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999999369,
                "variance": 0.2499999369
              },
              {
                "average": 0.0001673990179,
                "count": 8578306,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01293719502,
                "variance": 0.000167371015
              },
              {
                "average": 1.178813859,
                "count": 8578306,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4299218144,
                "variance": 0.1848327665
              },
              {
                "average": 1.221433621,
                "count": 8578306,
                "maximum": 21.34799957,
                "minimum": -16.16399956,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.73101405,
                "variance": 115.1546626
              },
              {
                "average": 0.5139047266,
                "count": 8578306,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998066503,
                "variance": 0.2498066877
              },
              {
                "average": 591.4906869,
                "count": 8578306,
                "maximum": 751,
                "minimum": 558,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 70.27594201,
                "variance": 4938.708025
              },
              {
                "average": 220775374.7,
                "count": 8578306,
                "maximum": 222303691.6,
                "minimum": 220476573.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 675175.1032,
                "variance": 455861420000.0
              },
              {
                "average": 0.5139047266,
                "count": 8578306,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998066503,
                "variance": 0.2498066877
              },
              {
                "average": 0,
                "count": 8578306,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8578306,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8578306,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1870602424,
                "count": 8578306,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3899599029,
                "variance": 0.1520687259
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -229164.9752,
              2303447.311,
              -228.4771679,
              -228646.2952,
              2303948.351,
              126.6028321
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -229164.9752134971,
                    2303447.310900225,
                    -228.47716794961337
                  ],
                  [
                    -229164.9752134971,
                    2303948.350900225,
                    -228.47716794961337
                  ],
                  [
                    -228646.2952134971,
                    2303948.350900225,
                    126.6028320503866
                  ],
                  [
                    -228646.2952134971,
                    2303447.310900225,
                    126.6028320503866
                  ],
                  [
                    -229164.9752134971,
                    2303447.310900225,
                    -228.47716794961337
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:11+00:00",
            "end_time": "2018-09-08T21:16:13+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0849.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.99320985549213,
              70.64190760311938,
              9.960797064272745
            ],
            [
              -159.99440476546343,
              70.64647093079016,
              9.960797064272745
            ],
            [
              -159.9807250238124,
              70.64689831286772,
              16.940797064272743
            ],
            [
              -159.9795328111507,
              70.64233488859529,
              16.940797064272743
            ],
            [
              -159.99320985549213,
              70.64190760311938,
              9.960797064272745
            ]
          ]
        ]
      },
      "bbox": [
        -159.9944048,
        70.6419076,
        9.960797064,
        -159.9795328,
        70.64689831,
        16.94079706
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:46Z",
        "pc:count": 7400223,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225848.3378,
            "count": 7400223,
            "maximum": -225588.6057,
            "minimum": -226107.4057,
            "name": "X",
            "position": 0,
            "stddev": 133.328707,
            "variance": 17776.54411
          },
          {
            "average": 2305585.464,
            "count": 7400223,
            "maximum": 2305830.129,
            "minimum": 2305329.329,
            "name": "Y",
            "position": 1,
            "stddev": 129.032707,
            "variance": 16649.43948
          },
          {
            "average": 10.82341782,
            "count": 7400223,
            "maximum": 16.94079706,
            "minimum": 9.960797064,
            "name": "Z",
            "position": 2,
            "stddev": 0.8005154437,
            "variance": 0.6408249755
          },
          {
            "average": 34848.44817,
            "count": 7400223,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 13960.99077,
            "variance": 194909263.1
          },
          {
            "average": 1,
            "count": 7400223,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 7400223,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5065312221,
            "count": 7400223,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999573751,
            "variance": 0.2499573769
          },
          {
            "average": 0.0002012101527,
            "count": 7400223,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01418343028,
            "variance": 0.0002011696944
          },
          {
            "average": 1.268798792,
            "count": 7400223,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.9516785438,
            "variance": 0.9056920507
          },
          {
            "average": -3.207234239,
            "count": 7400223,
            "maximum": 16.77000046,
            "minimum": -20.74799919,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.17234316,
            "variance": 103.4765653
          },
          {
            "average": 0.5003070853,
            "count": 7400223,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999999395,
            "variance": 0.2499999395
          },
          {
            "average": 591.1901687,
            "count": 7400223,
            "maximum": 752,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 74.86161524,
            "variance": 5604.261437
          },
          {
            "average": 220802333.8,
            "count": 7400223,
            "maximum": 222304086.4,
            "minimum": 220475215.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 699704.3672,
            "variance": 489586201500.0
          },
          {
            "average": 0.5003070853,
            "count": 7400223,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999999395,
            "variance": 0.2499999395
          },
          {
            "average": 0,
            "count": 7400223,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7400223,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7400223,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1751368844,
            "count": 7400223,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3800841691,
            "variance": 0.1444639756
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226107.4057,
          2305329.329,
          9.960797064,
          -225588.6057,
          2305830.129,
          16.94079706
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226107.4057469613,
                2305329.329149697,
                9.960797064272745
              ],
              [
                -226107.4057469613,
                2305830.129149697,
                9.960797064272745
              ],
              [
                -225588.60574696132,
                2305830.129149697,
                16.940797064272743
              ],
              [
                -225588.60574696132,
                2305329.329149697,
                16.940797064272743
              ],
              [
                -226107.4057469613,
                2305329.329149697,
                9.960797064272745
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:46+00:00",
        "end_time": "2018-09-08T20:53:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0849.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0849.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0849.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0849.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9944048,
            70.6419076,
            9.960797064,
            -159.9795328,
            70.64689831,
            16.94079706
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.99320985549213,
                  70.64190760311938,
                  9.960797064272745
                ],
                [
                  -159.99440476546343,
                  70.64647093079016,
                  9.960797064272745
                ],
                [
                  -159.9807250238124,
                  70.64689831286772,
                  16.940797064272743
                ],
                [
                  -159.9795328111507,
                  70.64233488859529,
                  16.940797064272743
                ],
                [
                  -159.99320985549213,
                  70.64190760311938,
                  9.960797064272745
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0849.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0849.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:46Z",
            "pc:count": 7400223,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225848.3378,
                "count": 7400223,
                "maximum": -225588.6057,
                "minimum": -226107.4057,
                "name": "X",
                "position": 0,
                "stddev": 133.328707,
                "variance": 17776.54411
              },
              {
                "average": 2305585.464,
                "count": 7400223,
                "maximum": 2305830.129,
                "minimum": 2305329.329,
                "name": "Y",
                "position": 1,
                "stddev": 129.032707,
                "variance": 16649.43948
              },
              {
                "average": 10.82341782,
                "count": 7400223,
                "maximum": 16.94079706,
                "minimum": 9.960797064,
                "name": "Z",
                "position": 2,
                "stddev": 0.8005154437,
                "variance": 0.6408249755
              },
              {
                "average": 34848.44817,
                "count": 7400223,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 13960.99077,
                "variance": 194909263.1
              },
              {
                "average": 1,
                "count": 7400223,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 7400223,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5065312221,
                "count": 7400223,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999573751,
                "variance": 0.2499573769
              },
              {
                "average": 0.0002012101527,
                "count": 7400223,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01418343028,
                "variance": 0.0002011696944
              },
              {
                "average": 1.268798792,
                "count": 7400223,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.9516785438,
                "variance": 0.9056920507
              },
              {
                "average": -3.207234239,
                "count": 7400223,
                "maximum": 16.77000046,
                "minimum": -20.74799919,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.17234316,
                "variance": 103.4765653
              },
              {
                "average": 0.5003070853,
                "count": 7400223,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999999395,
                "variance": 0.2499999395
              },
              {
                "average": 591.1901687,
                "count": 7400223,
                "maximum": 752,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 74.86161524,
                "variance": 5604.261437
              },
              {
                "average": 220802333.8,
                "count": 7400223,
                "maximum": 222304086.4,
                "minimum": 220475215.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 699704.3672,
                "variance": 489586201500.0
              },
              {
                "average": 0.5003070853,
                "count": 7400223,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999999395,
                "variance": 0.2499999395
              },
              {
                "average": 0,
                "count": 7400223,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7400223,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7400223,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1751368844,
                "count": 7400223,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3800841691,
                "variance": 0.1444639756
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226107.4057,
              2305329.329,
              9.960797064,
              -225588.6057,
              2305830.129,
              16.94079706
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226107.4057469613,
                    2305329.329149697,
                    9.960797064272745
                  ],
                  [
                    -226107.4057469613,
                    2305830.129149697,
                    9.960797064272745
                  ],
                  [
                    -225588.60574696132,
                    2305830.129149697,
                    16.940797064272743
                  ],
                  [
                    -225588.60574696132,
                    2305329.329149697,
                    16.940797064272743
                  ],
                  [
                    -226107.4057469613,
                    2305329.329149697,
                    9.960797064272745
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:46+00:00",
            "end_time": "2018-09-08T20:53:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0745.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0688680151833,
              70.62631958301888,
              1.141996600002914
            ],
            [
              -160.06996688519655,
              70.63046603294362,
              1.141996600002914
            ],
            [
              -160.05630072543116,
              70.63089866940439,
              7.961996600002914
            ],
            [
              -160.05520430193818,
              70.62675213070158,
              7.961996600002914
            ],
            [
              -160.0688680151833,
              70.62631958301888,
              1.141996600002914
            ]
          ]
        ]
      },
      "bbox": [
        -160.0699669,
        70.62631958,
        1.1419966,
        -160.0552043,
        70.63089867,
        7.9619966
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:17Z",
        "pc:count": 4170221,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228800.6471,
            "count": 4170221,
            "maximum": -228590.6668,
            "minimum": -229109.3668,
            "name": "X",
            "position": 0,
            "stddev": 127.8596965,
            "variance": 16348.102
          },
          {
            "average": 2304059.209,
            "count": 4170221,
            "maximum": 2304346.952,
            "minimum": 2303891.812,
            "name": "Y",
            "position": 1,
            "stddev": 100.8512092,
            "variance": 10170.9664
          },
          {
            "average": 3.862610505,
            "count": 4170221,
            "maximum": 7.9619966,
            "minimum": 1.1419966,
            "name": "Z",
            "position": 2,
            "stddev": 2.000067132,
            "variance": 4.000268534
          },
          {
            "average": 28454.77025,
            "count": 4170221,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 13218.56653,
            "variance": 174730501.1
          },
          {
            "average": 1.000000719,
            "count": 4170221,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0008481662512,
            "variance": 7.193859897e-07
          },
          {
            "average": 1.000001439,
            "count": 4170221,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001199487784,
            "variance": 1.438770944e-06
          },
          {
            "average": 0.4886196679,
            "count": 4170221,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998705312,
            "variance": 0.249870548
          },
          {
            "average": 0.0002692902846,
            "count": 4170221,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01640785885,
            "variance": 0.0002692178319
          },
          {
            "average": 1.646762126,
            "count": 4170221,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.92089636,
            "variance": 3.689842827
          },
          {
            "average": 5.240673031,
            "count": 4170221,
            "maximum": 21.31200027,
            "minimum": -16.14599991,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.47893378,
            "variance": 109.8080531
          },
          {
            "average": 0.4657187233,
            "count": 4170221,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4988234695,
            "variance": 0.2488248537
          },
          {
            "average": 598.080671,
            "count": 4170221,
            "maximum": 751,
            "minimum": 557,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 76.6263972,
            "variance": 5871.604748
          },
          {
            "average": 220845261.6,
            "count": 4170221,
            "maximum": 222303697.2,
            "minimum": 220476307,
            "name": "GpsTime",
            "position": 12,
            "stddev": 732934.0299,
            "variance": 537192292200.0
          },
          {
            "average": 0.4657187233,
            "count": 4170221,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4988234695,
            "variance": 0.2488248537
          },
          {
            "average": 0,
            "count": 4170221,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4170221,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4170221,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2307661872,
            "count": 4170221,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4213231499,
            "variance": 0.1775131966
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -229109.3668,
          2303891.812,
          1.1419966,
          -228590.6668,
          2304346.952,
          7.9619966
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -229109.3667754539,
                2303891.811864992,
                1.141996600002914
              ],
              [
                -229109.3667754539,
                2304346.951864992,
                1.141996600002914
              ],
              [
                -228590.6667754539,
                2304346.951864992,
                7.961996600002914
              ],
              [
                -228590.6667754539,
                2303891.811864992,
                7.961996600002914
              ],
              [
                -229109.3667754539,
                2303891.811864992,
                1.141996600002914
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:17+00:00",
        "end_time": "2018-09-08T21:11:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0745.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0745.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0745.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0745.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0699669,
            70.62631958,
            1.1419966,
            -160.0552043,
            70.63089867,
            7.9619966
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0688680151833,
                  70.62631958301888,
                  1.141996600002914
                ],
                [
                  -160.06996688519655,
                  70.63046603294362,
                  1.141996600002914
                ],
                [
                  -160.05630072543116,
                  70.63089866940439,
                  7.961996600002914
                ],
                [
                  -160.05520430193818,
                  70.62675213070158,
                  7.961996600002914
                ],
                [
                  -160.0688680151833,
                  70.62631958301888,
                  1.141996600002914
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0745.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0745.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:17Z",
            "pc:count": 4170221,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228800.6471,
                "count": 4170221,
                "maximum": -228590.6668,
                "minimum": -229109.3668,
                "name": "X",
                "position": 0,
                "stddev": 127.8596965,
                "variance": 16348.102
              },
              {
                "average": 2304059.209,
                "count": 4170221,
                "maximum": 2304346.952,
                "minimum": 2303891.812,
                "name": "Y",
                "position": 1,
                "stddev": 100.8512092,
                "variance": 10170.9664
              },
              {
                "average": 3.862610505,
                "count": 4170221,
                "maximum": 7.9619966,
                "minimum": 1.1419966,
                "name": "Z",
                "position": 2,
                "stddev": 2.000067132,
                "variance": 4.000268534
              },
              {
                "average": 28454.77025,
                "count": 4170221,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 13218.56653,
                "variance": 174730501.1
              },
              {
                "average": 1.000000719,
                "count": 4170221,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0008481662512,
                "variance": 7.193859897e-07
              },
              {
                "average": 1.000001439,
                "count": 4170221,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001199487784,
                "variance": 1.438770944e-06
              },
              {
                "average": 0.4886196679,
                "count": 4170221,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998705312,
                "variance": 0.249870548
              },
              {
                "average": 0.0002692902846,
                "count": 4170221,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01640785885,
                "variance": 0.0002692178319
              },
              {
                "average": 1.646762126,
                "count": 4170221,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.92089636,
                "variance": 3.689842827
              },
              {
                "average": 5.240673031,
                "count": 4170221,
                "maximum": 21.31200027,
                "minimum": -16.14599991,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.47893378,
                "variance": 109.8080531
              },
              {
                "average": 0.4657187233,
                "count": 4170221,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4988234695,
                "variance": 0.2488248537
              },
              {
                "average": 598.080671,
                "count": 4170221,
                "maximum": 751,
                "minimum": 557,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 76.6263972,
                "variance": 5871.604748
              },
              {
                "average": 220845261.6,
                "count": 4170221,
                "maximum": 222303697.2,
                "minimum": 220476307,
                "name": "GpsTime",
                "position": 12,
                "stddev": 732934.0299,
                "variance": 537192292200.0
              },
              {
                "average": 0.4657187233,
                "count": 4170221,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4988234695,
                "variance": 0.2488248537
              },
              {
                "average": 0,
                "count": 4170221,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4170221,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4170221,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2307661872,
                "count": 4170221,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4213231499,
                "variance": 0.1775131966
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -229109.3668,
              2303891.812,
              1.1419966,
              -228590.6668,
              2304346.952,
              7.9619966
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -229109.3667754539,
                    2303891.811864992,
                    1.141996600002914
                  ],
                  [
                    -229109.3667754539,
                    2304346.951864992,
                    1.141996600002914
                  ],
                  [
                    -228590.6667754539,
                    2304346.951864992,
                    7.961996600002914
                  ],
                  [
                    -228590.6667754539,
                    2303891.811864992,
                    7.961996600002914
                  ],
                  [
                    -229109.3667754539,
                    2303891.811864992,
                    1.141996600002914
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:17+00:00",
            "end_time": "2018-09-08T21:11:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0850.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.98085777658076,
              70.6417697293608,
              9.096745589353795
            ],
            [
              -159.982050937804,
              70.64633586371905,
              9.096745589353795
            ],
            [
              -159.96837473874112,
              70.6467622510725,
              17.336745589353793
            ],
            [
              -159.96718427586555,
              70.64219602027893,
              17.336745589353793
            ],
            [
              -159.98085777658076,
              70.6417697293608,
              9.096745589353795
            ]
          ]
        ]
      },
      "bbox": [
        -159.9820509,
        70.64176973,
        9.096745589,
        -159.9671843,
        70.64676225,
        17.33674559
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:20Z",
        "pc:count": 5914910,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225393.6749,
            "count": 5914910,
            "maximum": -225125.3528,
            "minimum": -225644.0128,
            "name": "X",
            "position": 0,
            "stddev": 134.3944678,
            "variance": 18061.87296
          },
          {
            "average": 2305526.769,
            "count": 5914910,
            "maximum": 2305773.409,
            "minimum": 2305272.309,
            "name": "Y",
            "position": 1,
            "stddev": 128.8147429,
            "variance": 16593.23799
          },
          {
            "average": 12.45689563,
            "count": 5914910,
            "maximum": 17.33674559,
            "minimum": 9.096745589,
            "name": "Z",
            "position": 2,
            "stddev": 2.373209555,
            "variance": 5.632123591
          },
          {
            "average": 42495.89337,
            "count": 5914910,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 12681.45008,
            "variance": 160819176
          },
          {
            "average": 1,
            "count": 5914910,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5914910,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4976425677,
            "count": 5914910,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999944847,
            "variance": 0.2499944848
          },
          {
            "average": 0.0002677978194,
            "count": 5914910,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01636233935,
            "variance": 0.000267726149
          },
          {
            "average": 1.609072666,
            "count": 5914910,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.813779981,
            "variance": 3.289797818
          },
          {
            "average": 2.142346906,
            "count": 5914910,
            "maximum": 21.38400078,
            "minimum": -20.75399971,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.490026,
            "variance": 110.0406456
          },
          {
            "average": 0.5024281012,
            "count": 5914910,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999941466,
            "variance": 0.2499941466
          },
          {
            "average": 584.534714,
            "count": 5914910,
            "maximum": 753,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 70.82941242,
            "variance": 5016.805663
          },
          {
            "average": 220752347.6,
            "count": 5914910,
            "maximum": 222304600.5,
            "minimum": 220475222.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 654946.5553,
            "variance": 428954990300.0
          },
          {
            "average": 0.5024281012,
            "count": 5914910,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999941466,
            "variance": 0.2499941466
          },
          {
            "average": 0,
            "count": 5914910,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5914910,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5914910,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2682436419,
            "count": 5914910,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4430451711,
            "variance": 0.1962890237
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225644.0128,
          2305272.309,
          9.096745589,
          -225125.3528,
          2305773.409,
          17.33674559
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225644.01275593377,
                2305272.3092346964,
                9.096745589353795
              ],
              [
                -225644.01275593377,
                2305773.409234696,
                9.096745589353795
              ],
              [
                -225125.3527559338,
                2305773.409234696,
                17.336745589353793
              ],
              [
                -225125.3527559338,
                2305272.3092346964,
                17.336745589353793
              ],
              [
                -225644.01275593377,
                2305272.3092346964,
                9.096745589353795
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:20+00:00",
        "end_time": "2018-09-08T20:53:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0850.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0850.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0850.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0850.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9820509,
            70.64176973,
            9.096745589,
            -159.9671843,
            70.64676225,
            17.33674559
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.98085777658076,
                  70.6417697293608,
                  9.096745589353795
                ],
                [
                  -159.982050937804,
                  70.64633586371905,
                  9.096745589353795
                ],
                [
                  -159.96837473874112,
                  70.6467622510725,
                  17.336745589353793
                ],
                [
                  -159.96718427586555,
                  70.64219602027893,
                  17.336745589353793
                ],
                [
                  -159.98085777658076,
                  70.6417697293608,
                  9.096745589353795
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0850.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0850.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:20Z",
            "pc:count": 5914910,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225393.6749,
                "count": 5914910,
                "maximum": -225125.3528,
                "minimum": -225644.0128,
                "name": "X",
                "position": 0,
                "stddev": 134.3944678,
                "variance": 18061.87296
              },
              {
                "average": 2305526.769,
                "count": 5914910,
                "maximum": 2305773.409,
                "minimum": 2305272.309,
                "name": "Y",
                "position": 1,
                "stddev": 128.8147429,
                "variance": 16593.23799
              },
              {
                "average": 12.45689563,
                "count": 5914910,
                "maximum": 17.33674559,
                "minimum": 9.096745589,
                "name": "Z",
                "position": 2,
                "stddev": 2.373209555,
                "variance": 5.632123591
              },
              {
                "average": 42495.89337,
                "count": 5914910,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 12681.45008,
                "variance": 160819176
              },
              {
                "average": 1,
                "count": 5914910,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5914910,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4976425677,
                "count": 5914910,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999944847,
                "variance": 0.2499944848
              },
              {
                "average": 0.0002677978194,
                "count": 5914910,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01636233935,
                "variance": 0.000267726149
              },
              {
                "average": 1.609072666,
                "count": 5914910,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.813779981,
                "variance": 3.289797818
              },
              {
                "average": 2.142346906,
                "count": 5914910,
                "maximum": 21.38400078,
                "minimum": -20.75399971,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.490026,
                "variance": 110.0406456
              },
              {
                "average": 0.5024281012,
                "count": 5914910,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999941466,
                "variance": 0.2499941466
              },
              {
                "average": 584.534714,
                "count": 5914910,
                "maximum": 753,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 70.82941242,
                "variance": 5016.805663
              },
              {
                "average": 220752347.6,
                "count": 5914910,
                "maximum": 222304600.5,
                "minimum": 220475222.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 654946.5553,
                "variance": 428954990300.0
              },
              {
                "average": 0.5024281012,
                "count": 5914910,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999941466,
                "variance": 0.2499941466
              },
              {
                "average": 0,
                "count": 5914910,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5914910,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5914910,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2682436419,
                "count": 5914910,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4430451711,
                "variance": 0.1962890237
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225644.0128,
              2305272.309,
              9.096745589,
              -225125.3528,
              2305773.409,
              17.33674559
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225644.01275593377,
                    2305272.3092346964,
                    9.096745589353795
                  ],
                  [
                    -225644.01275593377,
                    2305773.409234696,
                    9.096745589353795
                  ],
                  [
                    -225125.3527559338,
                    2305773.409234696,
                    17.336745589353793
                  ],
                  [
                    -225125.3527559338,
                    2305272.3092346964,
                    17.336745589353793
                  ],
                  [
                    -225644.01275593377,
                    2305272.3092346964,
                    9.096745589353795
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:20+00:00",
            "end_time": "2018-09-08T20:53:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0724.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0569224860874,
              70.62209402286095,
              0.890655084982147
            ],
            [
              -160.05812935948148,
              70.62665768909346,
              0.890655084982147
            ],
            [
              -160.04446682386143,
              70.62708942362191,
              15.770655084982149
            ],
            [
              -160.04326264210155,
              70.62252565990512,
              15.770655084982149
            ],
            [
              -160.0569224860874,
              70.62209402286095,
              0.890655084982147
            ]
          ]
        ]
      },
      "bbox": [
        -160.0581294,
        70.62209402,
        0.890655085,
        -160.0432626,
        70.62708942,
        15.77065508
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:33Z",
        "pc:count": 8271196,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228429.5621,
            "count": 8271196,
            "maximum": -228183.085,
            "minimum": -228701.725,
            "name": "X",
            "position": 0,
            "stddev": 134.2524089,
            "variance": 18023.7093
          },
          {
            "average": 2303647.355,
            "count": 8271196,
            "maximum": 2303891.602,
            "minimum": 2303390.662,
            "name": "Y",
            "position": 1,
            "stddev": 126.0852577,
            "variance": 15897.4922
          },
          {
            "average": 11.89579995,
            "count": 8271196,
            "maximum": 15.77065508,
            "minimum": 0.890655085,
            "name": "Z",
            "position": 2,
            "stddev": 2.880684039,
            "variance": 8.298340531
          },
          {
            "average": 45605.51684,
            "count": 8271196,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 8185.284887,
            "variance": 66998888.69
          },
          {
            "average": 1.000002902,
            "count": 8271196,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001703416544,
            "variance": 2.901627922e-06
          },
          {
            "average": 1.000005803,
            "count": 8271196,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002408991284,
            "variance": 5.803239005e-06
          },
          {
            "average": 0.5044508678,
            "count": 8271196,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999802196,
            "variance": 0.24998022
          },
          {
            "average": 0.000147137125,
            "count": 8271196,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01212911759,
            "variance": 0.0001471154935
          },
          {
            "average": 1.20240241,
            "count": 8271196,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.5249322885,
            "variance": 0.2755539075
          },
          {
            "average": -1.752418641,
            "count": 8271196,
            "maximum": 21.33600044,
            "minimum": -20.71800041,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.285692864,
            "variance": 86.22409196
          },
          {
            "average": 0.506134663,
            "count": 8271196,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999623947,
            "variance": 0.2499623961
          },
          {
            "average": 581.4621688,
            "count": 8271196,
            "maximum": 752,
            "minimum": 558,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 59.43717317,
            "variance": 3532.777555
          },
          {
            "average": 220676603.3,
            "count": 8271196,
            "maximum": 222304133.1,
            "minimum": 220476567,
            "name": "GpsTime",
            "position": 12,
            "stddev": 569757.9849,
            "variance": 324624161300.0
          },
          {
            "average": 0.506134663,
            "count": 8271196,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999623947,
            "variance": 0.2499623961
          },
          {
            "average": 0,
            "count": 8271196,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8271196,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8271196,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1647409879,
            "count": 8271196,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3709466423,
            "variance": 0.1376014114
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228701.725,
          2303390.662,
          0.890655085,
          -228183.085,
          2303891.602,
          15.77065508
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228701.72495287232,
                2303390.662092445,
                0.890655084982147
              ],
              [
                -228701.72495287232,
                2303891.6020924454,
                0.890655084982147
              ],
              [
                -228183.0849528723,
                2303891.6020924454,
                15.770655084982149
              ],
              [
                -228183.0849528723,
                2303390.662092445,
                15.770655084982149
              ],
              [
                -228701.72495287232,
                2303390.662092445,
                0.890655084982147
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:33+00:00",
        "end_time": "2018-09-08T21:16:07+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0724.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0724.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0724.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0724.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0581294,
            70.62209402,
            0.890655085,
            -160.0432626,
            70.62708942,
            15.77065508
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0569224860874,
                  70.62209402286095,
                  0.890655084982147
                ],
                [
                  -160.05812935948148,
                  70.62665768909346,
                  0.890655084982147
                ],
                [
                  -160.04446682386143,
                  70.62708942362191,
                  15.770655084982149
                ],
                [
                  -160.04326264210155,
                  70.62252565990512,
                  15.770655084982149
                ],
                [
                  -160.0569224860874,
                  70.62209402286095,
                  0.890655084982147
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0724.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0724.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:33Z",
            "pc:count": 8271196,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228429.5621,
                "count": 8271196,
                "maximum": -228183.085,
                "minimum": -228701.725,
                "name": "X",
                "position": 0,
                "stddev": 134.2524089,
                "variance": 18023.7093
              },
              {
                "average": 2303647.355,
                "count": 8271196,
                "maximum": 2303891.602,
                "minimum": 2303390.662,
                "name": "Y",
                "position": 1,
                "stddev": 126.0852577,
                "variance": 15897.4922
              },
              {
                "average": 11.89579995,
                "count": 8271196,
                "maximum": 15.77065508,
                "minimum": 0.890655085,
                "name": "Z",
                "position": 2,
                "stddev": 2.880684039,
                "variance": 8.298340531
              },
              {
                "average": 45605.51684,
                "count": 8271196,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 8185.284887,
                "variance": 66998888.69
              },
              {
                "average": 1.000002902,
                "count": 8271196,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001703416544,
                "variance": 2.901627922e-06
              },
              {
                "average": 1.000005803,
                "count": 8271196,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002408991284,
                "variance": 5.803239005e-06
              },
              {
                "average": 0.5044508678,
                "count": 8271196,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999802196,
                "variance": 0.24998022
              },
              {
                "average": 0.000147137125,
                "count": 8271196,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01212911759,
                "variance": 0.0001471154935
              },
              {
                "average": 1.20240241,
                "count": 8271196,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.5249322885,
                "variance": 0.2755539075
              },
              {
                "average": -1.752418641,
                "count": 8271196,
                "maximum": 21.33600044,
                "minimum": -20.71800041,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.285692864,
                "variance": 86.22409196
              },
              {
                "average": 0.506134663,
                "count": 8271196,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999623947,
                "variance": 0.2499623961
              },
              {
                "average": 581.4621688,
                "count": 8271196,
                "maximum": 752,
                "minimum": 558,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 59.43717317,
                "variance": 3532.777555
              },
              {
                "average": 220676603.3,
                "count": 8271196,
                "maximum": 222304133.1,
                "minimum": 220476567,
                "name": "GpsTime",
                "position": 12,
                "stddev": 569757.9849,
                "variance": 324624161300.0
              },
              {
                "average": 0.506134663,
                "count": 8271196,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999623947,
                "variance": 0.2499623961
              },
              {
                "average": 0,
                "count": 8271196,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8271196,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8271196,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1647409879,
                "count": 8271196,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3709466423,
                "variance": 0.1376014114
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228701.725,
              2303390.662,
              0.890655085,
              -228183.085,
              2303891.602,
              15.77065508
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228701.72495287232,
                    2303390.662092445,
                    0.890655084982147
                  ],
                  [
                    -228701.72495287232,
                    2303891.6020924454,
                    0.890655084982147
                  ],
                  [
                    -228183.0849528723,
                    2303891.6020924454,
                    15.770655084982149
                  ],
                  [
                    -228183.0849528723,
                    2303390.662092445,
                    15.770655084982149
                  ],
                  [
                    -228701.72495287232,
                    2303390.662092445,
                    0.890655084982147
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:33+00:00",
            "end_time": "2018-09-08T21:16:07+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0851.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9685137280054,
              70.64163245461711,
              1.44808947973683
            ],
            [
              -159.9697044736873,
              70.64619884406324,
              1.44808947973683
            ],
            [
              -159.95602549048218,
              70.64662443434393,
              15.848089479736831
            ],
            [
              -159.9548374439259,
              70.64205794863811,
              15.848089479736831
            ],
            [
              -159.9685137280054,
              70.64163245461711,
              1.44808947973683
            ]
          ]
        ]
      },
      "bbox": [
        -159.9697045,
        70.64163245,
        1.44808948,
        -159.9548374,
        70.64662443,
        15.84808948
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:27Z",
        "pc:count": 6122176,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -224919.2577,
            "count": 6122176,
            "maximum": -224662.1427,
            "minimum": -225180.9027,
            "name": "X",
            "position": 0,
            "stddev": 134.0871226,
            "variance": 17979.35644
          },
          {
            "average": 2305458.484,
            "count": 6122176,
            "maximum": 2305716.588,
            "minimum": 2305215.468,
            "name": "Y",
            "position": 1,
            "stddev": 127.00748,
            "variance": 16130.89999
          },
          {
            "average": 11.01271034,
            "count": 6122176,
            "maximum": 15.84808948,
            "minimum": 1.44808948,
            "name": "Z",
            "position": 2,
            "stddev": 2.354626126,
            "variance": 5.544264192
          },
          {
            "average": 48277.612,
            "count": 6122176,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 6649.970911,
            "variance": 44222113.11
          },
          {
            "average": 1,
            "count": 6122176,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 6122176,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4954439402,
            "count": 6122176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999792827,
            "variance": 0.2499792832
          },
          {
            "average": 0.000202542364,
            "count": 6122176,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01423029774,
            "variance": 0.0002025013737
          },
          {
            "average": 1.163348947,
            "count": 6122176,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3717423106,
            "variance": 0.1381923455
          },
          {
            "average": 4.237461342,
            "count": 6122176,
            "maximum": 21.38400078,
            "minimum": -16.33799934,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.18243784,
            "variance": 125.0469161
          },
          {
            "average": 0.5077988611,
            "count": 6122176,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999392149,
            "variance": 0.2499392186
          },
          {
            "average": 602.9084678,
            "count": 6122176,
            "maximum": 753,
            "minimum": 551,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 86.13536049,
            "variance": 7419.300326
          },
          {
            "average": 220930951.9,
            "count": 6122176,
            "maximum": 222304607,
            "minimum": 220475229.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 790776.8719,
            "variance": 625328061100.0
          },
          {
            "average": 0.5077988611,
            "count": 6122176,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999392149,
            "variance": 0.2499392186
          },
          {
            "average": 0,
            "count": 6122176,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6122176,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6122176,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2306250261,
            "count": 6122176,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4212328957,
            "variance": 0.1774371524
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225180.9027,
          2305215.468,
          1.44808948,
          -224662.1427,
          2305716.588,
          15.84808948
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225180.90265442943,
                2305215.46768132,
                1.44808947973683
              ],
              [
                -225180.90265442943,
                2305716.58768132,
                1.44808947973683
              ],
              [
                -224662.14265442942,
                2305716.58768132,
                15.848089479736831
              ],
              [
                -224662.14265442942,
                2305215.46768132,
                15.848089479736831
              ],
              [
                -225180.90265442943,
                2305215.46768132,
                1.44808947973683
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:27+00:00",
        "end_time": "2018-09-08T20:53:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0851.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0851.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0851.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0851.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9697045,
            70.64163245,
            1.44808948,
            -159.9548374,
            70.64662443,
            15.84808948
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9685137280054,
                  70.64163245461711,
                  1.44808947973683
                ],
                [
                  -159.9697044736873,
                  70.64619884406324,
                  1.44808947973683
                ],
                [
                  -159.95602549048218,
                  70.64662443434393,
                  15.848089479736831
                ],
                [
                  -159.9548374439259,
                  70.64205794863811,
                  15.848089479736831
                ],
                [
                  -159.9685137280054,
                  70.64163245461711,
                  1.44808947973683
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0851.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0851.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:27Z",
            "pc:count": 6122176,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -224919.2577,
                "count": 6122176,
                "maximum": -224662.1427,
                "minimum": -225180.9027,
                "name": "X",
                "position": 0,
                "stddev": 134.0871226,
                "variance": 17979.35644
              },
              {
                "average": 2305458.484,
                "count": 6122176,
                "maximum": 2305716.588,
                "minimum": 2305215.468,
                "name": "Y",
                "position": 1,
                "stddev": 127.00748,
                "variance": 16130.89999
              },
              {
                "average": 11.01271034,
                "count": 6122176,
                "maximum": 15.84808948,
                "minimum": 1.44808948,
                "name": "Z",
                "position": 2,
                "stddev": 2.354626126,
                "variance": 5.544264192
              },
              {
                "average": 48277.612,
                "count": 6122176,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 6649.970911,
                "variance": 44222113.11
              },
              {
                "average": 1,
                "count": 6122176,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 6122176,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4954439402,
                "count": 6122176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999792827,
                "variance": 0.2499792832
              },
              {
                "average": 0.000202542364,
                "count": 6122176,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01423029774,
                "variance": 0.0002025013737
              },
              {
                "average": 1.163348947,
                "count": 6122176,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3717423106,
                "variance": 0.1381923455
              },
              {
                "average": 4.237461342,
                "count": 6122176,
                "maximum": 21.38400078,
                "minimum": -16.33799934,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.18243784,
                "variance": 125.0469161
              },
              {
                "average": 0.5077988611,
                "count": 6122176,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999392149,
                "variance": 0.2499392186
              },
              {
                "average": 602.9084678,
                "count": 6122176,
                "maximum": 753,
                "minimum": 551,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 86.13536049,
                "variance": 7419.300326
              },
              {
                "average": 220930951.9,
                "count": 6122176,
                "maximum": 222304607,
                "minimum": 220475229.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 790776.8719,
                "variance": 625328061100.0
              },
              {
                "average": 0.5077988611,
                "count": 6122176,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999392149,
                "variance": 0.2499392186
              },
              {
                "average": 0,
                "count": 6122176,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6122176,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6122176,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2306250261,
                "count": 6122176,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4212328957,
                "variance": 0.1774371524
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225180.9027,
              2305215.468,
              1.44808948,
              -224662.1427,
              2305716.588,
              15.84808948
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225180.90265442943,
                    2305215.46768132,
                    1.44808947973683
                  ],
                  [
                    -225180.90265442943,
                    2305716.58768132,
                    1.44808947973683
                  ],
                  [
                    -224662.14265442942,
                    2305716.58768132,
                    15.848089479736831
                  ],
                  [
                    -224662.14265442942,
                    2305215.46768132,
                    15.848089479736831
                  ],
                  [
                    -225180.90265442943,
                    2305215.46768132,
                    1.44808947973683
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:27+00:00",
            "end_time": "2018-09-08T20:53:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0725.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.04471998577975,
              70.62246120578115,
              -15.154391547784353
            ],
            [
              -160.04579295702766,
              70.62652679747563,
              -15.154391547784353
            ],
            [
              -160.03227463183444,
              70.62695310654652,
              39.66560845221565
            ],
            [
              -160.03120403326454,
              70.6228874290968,
              39.66560845221565
            ],
            [
              -160.04471998577975,
              70.62246120578115,
              -15.154391547784353
            ]
          ]
        ]
      },
      "bbox": [
        -160.045793,
        70.62246121,
        -15.15439155,
        -160.031204,
        70.62695311,
        39.66560845
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:30Z",
        "pc:count": 3086254,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228070.9662,
            "count": 3086254,
            "maximum": -227725.4401,
            "minimum": -228238.6001,
            "name": "X",
            "position": 0,
            "stddev": 107.199315,
            "variance": 11491.69313
          },
          {
            "average": 2303672.819,
            "count": 3086254,
            "maximum": 2303834.914,
            "minimum": 2303388.654,
            "name": "Y",
            "position": 1,
            "stddev": 95.2242227,
            "variance": 9067.652589
          },
          {
            "average": 9.369504661,
            "count": 3086254,
            "maximum": 39.66560845,
            "minimum": -15.15439155,
            "name": "Z",
            "position": 2,
            "stddev": 6.165082238,
            "variance": 38.00823901
          },
          {
            "average": 33393.8243,
            "count": 3086254,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 16672.15021,
            "variance": 277960592.6
          },
          {
            "average": 1.00000648,
            "count": 3086254,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002545644933,
            "variance": 6.480308125e-06
          },
          {
            "average": 1.000012961,
            "count": 3086254,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003600073924,
            "variance": 1.296053226e-05
          },
          {
            "average": 0.5085122611,
            "count": 3086254,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999276172,
            "variance": 0.2499276224
          },
          {
            "average": 0.0002180637109,
            "count": 3086254,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01476537266,
            "variance": 0.0002180162298
          },
          {
            "average": 1.544684592,
            "count": 3086254,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.73411729,
            "variance": 3.007162775
          },
          {
            "average": -2.968840205,
            "count": 3086254,
            "maximum": 16.62599945,
            "minimum": -20.72400093,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.501717823,
            "variance": 90.28264158
          },
          {
            "average": 0.5170708568,
            "count": 3086254,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997085818,
            "variance": 0.2497086668
          },
          {
            "average": 592.1685798,
            "count": 3086254,
            "maximum": 752,
            "minimum": 558,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 70.72447039,
            "variance": 5001.950712
          },
          {
            "average": 220777617.7,
            "count": 3086254,
            "maximum": 222304130.9,
            "minimum": 220476560.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 677225.6704,
            "variance": 458634608600.0
          },
          {
            "average": 0.5170708568,
            "count": 3086254,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997085818,
            "variance": 0.2497086668
          },
          {
            "average": 0,
            "count": 3086254,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3086254,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3086254,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1511350006,
            "count": 3086254,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3581804765,
            "variance": 0.1282932537
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228238.6001,
          2303388.654,
          -15.15439155,
          -227725.4401,
          2303834.914,
          39.66560845
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228238.60009556587,
                2303388.6535710758,
                -15.154391547784353
              ],
              [
                -228238.60009556587,
                2303834.9135710755,
                -15.154391547784353
              ],
              [
                -227725.4400955659,
                2303834.9135710755,
                39.66560845221565
              ],
              [
                -227725.4400955659,
                2303388.6535710758,
                39.66560845221565
              ],
              [
                -228238.60009556587,
                2303388.6535710758,
                -15.154391547784353
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:30+00:00",
        "end_time": "2018-09-08T21:16:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0725.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0725.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0725.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0725.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.045793,
            70.62246121,
            -15.15439155,
            -160.031204,
            70.62695311,
            39.66560845
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.04471998577975,
                  70.62246120578115,
                  -15.154391547784353
                ],
                [
                  -160.04579295702766,
                  70.62652679747563,
                  -15.154391547784353
                ],
                [
                  -160.03227463183444,
                  70.62695310654652,
                  39.66560845221565
                ],
                [
                  -160.03120403326454,
                  70.6228874290968,
                  39.66560845221565
                ],
                [
                  -160.04471998577975,
                  70.62246120578115,
                  -15.154391547784353
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0725.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0725.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:30Z",
            "pc:count": 3086254,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228070.9662,
                "count": 3086254,
                "maximum": -227725.4401,
                "minimum": -228238.6001,
                "name": "X",
                "position": 0,
                "stddev": 107.199315,
                "variance": 11491.69313
              },
              {
                "average": 2303672.819,
                "count": 3086254,
                "maximum": 2303834.914,
                "minimum": 2303388.654,
                "name": "Y",
                "position": 1,
                "stddev": 95.2242227,
                "variance": 9067.652589
              },
              {
                "average": 9.369504661,
                "count": 3086254,
                "maximum": 39.66560845,
                "minimum": -15.15439155,
                "name": "Z",
                "position": 2,
                "stddev": 6.165082238,
                "variance": 38.00823901
              },
              {
                "average": 33393.8243,
                "count": 3086254,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 16672.15021,
                "variance": 277960592.6
              },
              {
                "average": 1.00000648,
                "count": 3086254,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002545644933,
                "variance": 6.480308125e-06
              },
              {
                "average": 1.000012961,
                "count": 3086254,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003600073924,
                "variance": 1.296053226e-05
              },
              {
                "average": 0.5085122611,
                "count": 3086254,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999276172,
                "variance": 0.2499276224
              },
              {
                "average": 0.0002180637109,
                "count": 3086254,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01476537266,
                "variance": 0.0002180162298
              },
              {
                "average": 1.544684592,
                "count": 3086254,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.73411729,
                "variance": 3.007162775
              },
              {
                "average": -2.968840205,
                "count": 3086254,
                "maximum": 16.62599945,
                "minimum": -20.72400093,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.501717823,
                "variance": 90.28264158
              },
              {
                "average": 0.5170708568,
                "count": 3086254,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997085818,
                "variance": 0.2497086668
              },
              {
                "average": 592.1685798,
                "count": 3086254,
                "maximum": 752,
                "minimum": 558,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 70.72447039,
                "variance": 5001.950712
              },
              {
                "average": 220777617.7,
                "count": 3086254,
                "maximum": 222304130.9,
                "minimum": 220476560.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 677225.6704,
                "variance": 458634608600.0
              },
              {
                "average": 0.5170708568,
                "count": 3086254,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997085818,
                "variance": 0.2497086668
              },
              {
                "average": 0,
                "count": 3086254,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3086254,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3086254,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1511350006,
                "count": 3086254,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3581804765,
                "variance": 0.1282932537
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228238.6001,
              2303388.654,
              -15.15439155,
              -227725.4401,
              2303834.914,
              39.66560845
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228238.60009556587,
                    2303388.6535710758,
                    -15.154391547784353
                  ],
                  [
                    -228238.60009556587,
                    2303834.9135710755,
                    -15.154391547784353
                  ],
                  [
                    -227725.4400955659,
                    2303834.9135710755,
                    39.66560845221565
                  ],
                  [
                    -227725.4400955659,
                    2303388.6535710758,
                    39.66560845221565
                  ],
                  [
                    -228238.60009556587,
                    2303388.6535710758,
                    -15.154391547784353
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:30+00:00",
            "end_time": "2018-09-08T21:16:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0726.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.96679289601795,
              70.6244937794914,
              0.914174991562634
            ],
            [
              -159.96711491467812,
              70.6257300105946,
              0.914174991562634
            ],
            [
              -159.95807013370094,
              70.626011622733,
              1.774174991562634
            ],
            [
              -159.9577485978943,
              70.62477537440299,
              1.774174991562634
            ],
            [
              -159.96679289601795,
              70.6244937794914,
              0.914174991562634
            ]
          ]
        ]
      },
      "bbox": [
        -159.9671149,
        70.62449378,
        0.9141749916,
        -159.9577486,
        70.62601162,
        1.774174992
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:28Z",
        "pc:count": 499291,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225104.2991,
            "count": 499291,
            "maximum": -224940.9205,
            "minimum": -225284.2405,
            "name": "X",
            "position": 0,
            "stddev": 86.40588588,
            "variance": 7465.977115
          },
          {
            "average": 2303415.841,
            "count": 499291,
            "maximum": 2303479.526,
            "minimum": 2303343.846,
            "name": "Y",
            "position": 1,
            "stddev": 29.78636127,
            "variance": 887.2273175
          },
          {
            "average": 1.421881159,
            "count": 499291,
            "maximum": 1.774174992,
            "minimum": 0.9141749916,
            "name": "Z",
            "position": 2,
            "stddev": 0.1648426383,
            "variance": 0.02717309539
          },
          {
            "average": 15410.90116,
            "count": 499291,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 12736.25506,
            "variance": 162212192.9
          },
          {
            "average": 1,
            "count": 499291,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 499291,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.487449203,
            "count": 499291,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998429532,
            "variance": 0.2498429779
          },
          {
            "average": 0.0002663777236,
            "count": 499291,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01631892459,
            "variance": 0.0002663072999
          },
          {
            "average": 3.073632411,
            "count": 499291,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.244618788,
            "variance": 10.52755108
          },
          {
            "average": 3.991749813,
            "count": 499291,
            "maximum": 11.8920002,
            "minimum": -15.9659996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.794218557,
            "variance": 33.57296868
          },
          {
            "average": 0.4812464074,
            "count": 499291,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996486793,
            "variance": 0.2496488028
          },
          {
            "average": 594.4886509,
            "count": 499291,
            "maximum": 754,
            "minimum": 559,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 73.37947507,
            "variance": 5384.547362
          },
          {
            "average": 220796344.3,
            "count": 499291,
            "maximum": 222304968.3,
            "minimum": 220476780.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 693968.4605,
            "variance": 481592224200.0
          },
          {
            "average": 0.4812464074,
            "count": 499291,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996486793,
            "variance": 0.2496488028
          },
          {
            "average": 0,
            "count": 499291,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 499291,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 499291,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03076362282,
            "count": 499291,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1726768139,
            "variance": 0.02981728205
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225284.2405,
          2303343.846,
          0.9141749916,
          -224940.9205,
          2303479.526,
          1.774174992
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225284.24049734563,
                2303343.8458636003,
                0.914174991562634
              ],
              [
                -225284.24049734563,
                2303479.5258636,
                0.914174991562634
              ],
              [
                -224940.92049734562,
                2303479.5258636,
                1.774174991562634
              ],
              [
                -224940.92049734562,
                2303343.8458636003,
                1.774174991562634
              ],
              [
                -225284.24049734563,
                2303343.8458636003,
                0.914174991562634
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:28+00:00",
        "end_time": "2018-09-08T21:19:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0726.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0726.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0726.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0726.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9671149,
            70.62449378,
            0.9141749916,
            -159.9577486,
            70.62601162,
            1.774174992
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.96679289601795,
                  70.6244937794914,
                  0.914174991562634
                ],
                [
                  -159.96711491467812,
                  70.6257300105946,
                  0.914174991562634
                ],
                [
                  -159.95807013370094,
                  70.626011622733,
                  1.774174991562634
                ],
                [
                  -159.9577485978943,
                  70.62477537440299,
                  1.774174991562634
                ],
                [
                  -159.96679289601795,
                  70.6244937794914,
                  0.914174991562634
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0726.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0726.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:28Z",
            "pc:count": 499291,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225104.2991,
                "count": 499291,
                "maximum": -224940.9205,
                "minimum": -225284.2405,
                "name": "X",
                "position": 0,
                "stddev": 86.40588588,
                "variance": 7465.977115
              },
              {
                "average": 2303415.841,
                "count": 499291,
                "maximum": 2303479.526,
                "minimum": 2303343.846,
                "name": "Y",
                "position": 1,
                "stddev": 29.78636127,
                "variance": 887.2273175
              },
              {
                "average": 1.421881159,
                "count": 499291,
                "maximum": 1.774174992,
                "minimum": 0.9141749916,
                "name": "Z",
                "position": 2,
                "stddev": 0.1648426383,
                "variance": 0.02717309539
              },
              {
                "average": 15410.90116,
                "count": 499291,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 12736.25506,
                "variance": 162212192.9
              },
              {
                "average": 1,
                "count": 499291,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 499291,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.487449203,
                "count": 499291,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998429532,
                "variance": 0.2498429779
              },
              {
                "average": 0.0002663777236,
                "count": 499291,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01631892459,
                "variance": 0.0002663072999
              },
              {
                "average": 3.073632411,
                "count": 499291,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.244618788,
                "variance": 10.52755108
              },
              {
                "average": 3.991749813,
                "count": 499291,
                "maximum": 11.8920002,
                "minimum": -15.9659996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.794218557,
                "variance": 33.57296868
              },
              {
                "average": 0.4812464074,
                "count": 499291,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996486793,
                "variance": 0.2496488028
              },
              {
                "average": 594.4886509,
                "count": 499291,
                "maximum": 754,
                "minimum": 559,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 73.37947507,
                "variance": 5384.547362
              },
              {
                "average": 220796344.3,
                "count": 499291,
                "maximum": 222304968.3,
                "minimum": 220476780.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 693968.4605,
                "variance": 481592224200.0
              },
              {
                "average": 0.4812464074,
                "count": 499291,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996486793,
                "variance": 0.2496488028
              },
              {
                "average": 0,
                "count": 499291,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 499291,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 499291,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03076362282,
                "count": 499291,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1726768139,
                "variance": 0.02981728205
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225284.2405,
              2303343.846,
              0.9141749916,
              -224940.9205,
              2303479.526,
              1.774174992
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225284.24049734563,
                    2303343.8458636003,
                    0.914174991562634
                  ],
                  [
                    -225284.24049734563,
                    2303479.5258636,
                    0.914174991562634
                  ],
                  [
                    -224940.92049734562,
                    2303479.5258636,
                    1.774174991562634
                  ],
                  [
                    -224940.92049734562,
                    2303343.8458636003,
                    1.774174991562634
                  ],
                  [
                    -225284.24049734563,
                    2303343.8458636003,
                    0.914174991562634
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:28+00:00",
            "end_time": "2018-09-08T21:19:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0869.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.025683476057,
              70.64653539819929,
              1.096168662210357
            ],
            [
              -160.02674517671113,
              70.65056741831039,
              1.096168662210357
            ],
            [
              -160.0172382730787,
              70.65086610453861,
              9.616168662210356
            ],
            [
              -160.01617822882463,
              70.6468340247606,
              9.616168662210356
            ],
            [
              -160.025683476057,
              70.64653539819929,
              1.096168662210357
            ]
          ]
        ]
      },
      "bbox": [
        -160.0267452,
        70.6465354,
        1.096168662,
        -160.0161782,
        70.6508661,
        9.616168662
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:54Z",
        "pc:count": 1201941,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227055.4103,
            "count": 1201941,
            "maximum": -226922.8613,
            "minimum": -227283.3613,
            "name": "X",
            "position": 0,
            "stddev": 76.34053921,
            "variance": 5827.877927
          },
          {
            "average": 2306097.876,
            "count": 1201941,
            "maximum": 2306386.417,
            "minimum": 2305943.917,
            "name": "Y",
            "position": 1,
            "stddev": 100.2334284,
            "variance": 10046.74016
          },
          {
            "average": 2.159954306,
            "count": 1201941,
            "maximum": 9.616168662,
            "minimum": 1.096168662,
            "name": "Z",
            "position": 2,
            "stddev": 1.782585277,
            "variance": 3.177610271
          },
          {
            "average": 20272.42223,
            "count": 1201941,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 14523.90003,
            "variance": 210943672
          },
          {
            "average": 1,
            "count": 1201941,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1201941,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4983039933,
            "count": 1201941,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999973315,
            "variance": 0.2499973316
          },
          {
            "average": 0.000280379819,
            "count": 1201941,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01674220533,
            "variance": 0.0002803014393
          },
          {
            "average": 5.104037553,
            "count": 1201941,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.781409926,
            "variance": 14.29906103
          },
          {
            "average": 2.899770151,
            "count": 1201941,
            "maximum": 21.44400024,
            "minimum": -16.04400063,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.194014653,
            "variance": 67.14187613
          },
          {
            "average": 0.5043874866,
            "count": 1201941,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999809576,
            "variance": 0.2499809579
          },
          {
            "average": 598.3821818,
            "count": 1201941,
            "maximum": 751,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 84.90482615,
            "variance": 7208.829503
          },
          {
            "average": 220910844.5,
            "count": 1201941,
            "maximum": 222303734.6,
            "minimum": 220475044.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 778867.204,
            "variance": 606634121400.0
          },
          {
            "average": 0.5043874866,
            "count": 1201941,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999809576,
            "variance": 0.2499809579
          },
          {
            "average": 0,
            "count": 1201941,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1201941,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1201941,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1202638066,
            "count": 1201941,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3252699056,
            "variance": 0.1058005115
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227283.3613,
          2305943.917,
          1.096168662,
          -226922.8613,
          2306386.417,
          9.616168662
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227283.3612553791,
                2305943.9168346985,
                1.096168662210357
              ],
              [
                -227283.3612553791,
                2306386.4168346985,
                1.096168662210357
              ],
              [
                -226922.8612553791,
                2306386.4168346985,
                9.616168662210356
              ],
              [
                -226922.8612553791,
                2305943.9168346985,
                9.616168662210356
              ],
              [
                -227283.3612553791,
                2305943.9168346985,
                1.096168662210357
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:54+00:00",
        "end_time": "2018-09-08T20:50:44+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0869.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0869.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0869.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0869.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0267452,
            70.6465354,
            1.096168662,
            -160.0161782,
            70.6508661,
            9.616168662
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.025683476057,
                  70.64653539819929,
                  1.096168662210357
                ],
                [
                  -160.02674517671113,
                  70.65056741831039,
                  1.096168662210357
                ],
                [
                  -160.0172382730787,
                  70.65086610453861,
                  9.616168662210356
                ],
                [
                  -160.01617822882463,
                  70.6468340247606,
                  9.616168662210356
                ],
                [
                  -160.025683476057,
                  70.64653539819929,
                  1.096168662210357
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0869.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0869.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:54Z",
            "pc:count": 1201941,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227055.4103,
                "count": 1201941,
                "maximum": -226922.8613,
                "minimum": -227283.3613,
                "name": "X",
                "position": 0,
                "stddev": 76.34053921,
                "variance": 5827.877927
              },
              {
                "average": 2306097.876,
                "count": 1201941,
                "maximum": 2306386.417,
                "minimum": 2305943.917,
                "name": "Y",
                "position": 1,
                "stddev": 100.2334284,
                "variance": 10046.74016
              },
              {
                "average": 2.159954306,
                "count": 1201941,
                "maximum": 9.616168662,
                "minimum": 1.096168662,
                "name": "Z",
                "position": 2,
                "stddev": 1.782585277,
                "variance": 3.177610271
              },
              {
                "average": 20272.42223,
                "count": 1201941,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 14523.90003,
                "variance": 210943672
              },
              {
                "average": 1,
                "count": 1201941,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1201941,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4983039933,
                "count": 1201941,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999973315,
                "variance": 0.2499973316
              },
              {
                "average": 0.000280379819,
                "count": 1201941,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01674220533,
                "variance": 0.0002803014393
              },
              {
                "average": 5.104037553,
                "count": 1201941,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.781409926,
                "variance": 14.29906103
              },
              {
                "average": 2.899770151,
                "count": 1201941,
                "maximum": 21.44400024,
                "minimum": -16.04400063,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.194014653,
                "variance": 67.14187613
              },
              {
                "average": 0.5043874866,
                "count": 1201941,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999809576,
                "variance": 0.2499809579
              },
              {
                "average": 598.3821818,
                "count": 1201941,
                "maximum": 751,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 84.90482615,
                "variance": 7208.829503
              },
              {
                "average": 220910844.5,
                "count": 1201941,
                "maximum": 222303734.6,
                "minimum": 220475044.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 778867.204,
                "variance": 606634121400.0
              },
              {
                "average": 0.5043874866,
                "count": 1201941,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999809576,
                "variance": 0.2499809579
              },
              {
                "average": 0,
                "count": 1201941,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1201941,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1201941,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1202638066,
                "count": 1201941,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3252699056,
                "variance": 0.1058005115
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227283.3613,
              2305943.917,
              1.096168662,
              -226922.8613,
              2306386.417,
              9.616168662
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227283.3612553791,
                    2305943.9168346985,
                    1.096168662210357
                  ],
                  [
                    -227283.3612553791,
                    2306386.4168346985,
                    1.096168662210357
                  ],
                  [
                    -226922.8612553791,
                    2306386.4168346985,
                    9.616168662210356
                  ],
                  [
                    -226922.8612553791,
                    2305943.9168346985,
                    9.616168662210356
                  ],
                  [
                    -227283.3612553791,
                    2305943.9168346985,
                    1.096168662210357
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:54+00:00",
            "end_time": "2018-09-08T20:50:44+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0870.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.01750004938765,
              70.64627167602532,
              1.031885705576067
            ],
            [
              -160.01870006513997,
              70.6508351534748,
              1.031885705576067
            ],
            [
              -160.0050202844058,
              70.65126420999563,
              16.931885705576068
            ],
            [
              -160.0038229663204,
              70.6467006355391,
              16.931885705576068
            ],
            [
              -160.01750004938765,
              70.64627167602532,
              1.031885705576067
            ]
          ]
        ]
      },
      "bbox": [
        -160.0187001,
        70.64627168,
        1.031885706,
        -160.003823,
        70.65126421,
        16.93188571
      ],
      "properties": {
        "datetime": "2018-09-30T00:49:01Z",
        "pc:count": 5341143,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226713.7916,
            "count": 5341143,
            "maximum": -226459.4237,
            "minimum": -226978.1437,
            "name": "X",
            "position": 0,
            "stddev": 131.1444967,
            "variance": 17198.87901
          },
          {
            "average": 2306115.545,
            "count": 5341143,
            "maximum": 2306388.043,
            "minimum": 2305887.223,
            "name": "Y",
            "position": 1,
            "stddev": 120.0361438,
            "variance": 14408.67582
          },
          {
            "average": 11.26056188,
            "count": 5341143,
            "maximum": 16.93188571,
            "minimum": 1.031885706,
            "name": "Z",
            "position": 2,
            "stddev": 4.807852289,
            "variance": 23.11544363
          },
          {
            "average": 43589.18624,
            "count": 5341143,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 12855.48221,
            "variance": 165263422.9
          },
          {
            "average": 1.000054857,
            "count": 5341143,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.007406360302,
            "variance": 5.485417292e-05
          },
          {
            "average": 1.000110089,
            "count": 5341143,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01049174421,
            "variance": 0.0001100766967
          },
          {
            "average": 0.4943230316,
            "count": 5341143,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999678178,
            "variance": 0.2499678188
          },
          {
            "average": 0.0001928426181,
            "count": 5341143,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01388544079,
            "variance": 0.000192805466
          },
          {
            "average": 1.817318128,
            "count": 5341143,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.05448589,
            "variance": 4.220912273
          },
          {
            "average": 4.357741866,
            "count": 5341143,
            "maximum": 21.32999992,
            "minimum": -16.02599907,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.614835,
            "variance": 112.6747221
          },
          {
            "average": 0.5016778244,
            "count": 5341143,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999972317,
            "variance": 0.2499972317
          },
          {
            "average": 603.6849182,
            "count": 5341143,
            "maximum": 751,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 87.92165305,
            "variance": 7730.217074
          },
          {
            "average": 220957862,
            "count": 5341143,
            "maximum": 222303741.9,
            "minimum": 220475038.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 805885.7985,
            "variance": 649451920200.0
          },
          {
            "average": 0.5016778244,
            "count": 5341143,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999972317,
            "variance": 0.2499972317
          },
          {
            "average": 0,
            "count": 5341143,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5341143,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5341143,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1882325562,
            "count": 5341143,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3908977994,
            "variance": 0.1528010896
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226978.1437,
          2305887.223,
          1.031885706,
          -226459.4237,
          2306388.043,
          16.93188571
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226978.1437048649,
                2305887.223435099,
                1.031885705576067
              ],
              [
                -226978.1437048649,
                2306388.043435099,
                1.031885705576067
              ],
              [
                -226459.42370486492,
                2306388.043435099,
                16.931885705576068
              ],
              [
                -226459.42370486492,
                2305887.223435099,
                16.931885705576068
              ],
              [
                -226978.1437048649,
                2305887.223435099,
                1.031885705576067
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:49:01+00:00",
        "end_time": "2018-09-08T20:50:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0870.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0870.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0870.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0870.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0187001,
            70.64627168,
            1.031885706,
            -160.003823,
            70.65126421,
            16.93188571
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.01750004938765,
                  70.64627167602532,
                  1.031885705576067
                ],
                [
                  -160.01870006513997,
                  70.6508351534748,
                  1.031885705576067
                ],
                [
                  -160.0050202844058,
                  70.65126420999563,
                  16.931885705576068
                ],
                [
                  -160.0038229663204,
                  70.6467006355391,
                  16.931885705576068
                ],
                [
                  -160.01750004938765,
                  70.64627167602532,
                  1.031885705576067
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0870.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0870.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:49:01Z",
            "pc:count": 5341143,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226713.7916,
                "count": 5341143,
                "maximum": -226459.4237,
                "minimum": -226978.1437,
                "name": "X",
                "position": 0,
                "stddev": 131.1444967,
                "variance": 17198.87901
              },
              {
                "average": 2306115.545,
                "count": 5341143,
                "maximum": 2306388.043,
                "minimum": 2305887.223,
                "name": "Y",
                "position": 1,
                "stddev": 120.0361438,
                "variance": 14408.67582
              },
              {
                "average": 11.26056188,
                "count": 5341143,
                "maximum": 16.93188571,
                "minimum": 1.031885706,
                "name": "Z",
                "position": 2,
                "stddev": 4.807852289,
                "variance": 23.11544363
              },
              {
                "average": 43589.18624,
                "count": 5341143,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 12855.48221,
                "variance": 165263422.9
              },
              {
                "average": 1.000054857,
                "count": 5341143,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.007406360302,
                "variance": 5.485417292e-05
              },
              {
                "average": 1.000110089,
                "count": 5341143,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01049174421,
                "variance": 0.0001100766967
              },
              {
                "average": 0.4943230316,
                "count": 5341143,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999678178,
                "variance": 0.2499678188
              },
              {
                "average": 0.0001928426181,
                "count": 5341143,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01388544079,
                "variance": 0.000192805466
              },
              {
                "average": 1.817318128,
                "count": 5341143,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.05448589,
                "variance": 4.220912273
              },
              {
                "average": 4.357741866,
                "count": 5341143,
                "maximum": 21.32999992,
                "minimum": -16.02599907,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.614835,
                "variance": 112.6747221
              },
              {
                "average": 0.5016778244,
                "count": 5341143,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999972317,
                "variance": 0.2499972317
              },
              {
                "average": 603.6849182,
                "count": 5341143,
                "maximum": 751,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 87.92165305,
                "variance": 7730.217074
              },
              {
                "average": 220957862,
                "count": 5341143,
                "maximum": 222303741.9,
                "minimum": 220475038.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 805885.7985,
                "variance": 649451920200.0
              },
              {
                "average": 0.5016778244,
                "count": 5341143,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999972317,
                "variance": 0.2499972317
              },
              {
                "average": 0,
                "count": 5341143,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5341143,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5341143,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1882325562,
                "count": 5341143,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3908977994,
                "variance": 0.1528010896
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226978.1437,
              2305887.223,
              1.031885706,
              -226459.4237,
              2306388.043,
              16.93188571
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226978.1437048649,
                    2305887.223435099,
                    1.031885705576067
                  ],
                  [
                    -226978.1437048649,
                    2306388.043435099,
                    1.031885705576067
                  ],
                  [
                    -226459.42370486492,
                    2306388.043435099,
                    16.931885705576068
                  ],
                  [
                    -226459.42370486492,
                    2305887.223435099,
                    16.931885705576068
                  ],
                  [
                    -226978.1437048649,
                    2305887.223435099,
                    1.031885705576067
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:49:01+00:00",
            "end_time": "2018-09-08T20:50:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0746.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0565289401525,
              70.62618944551049,
              -5.150832208422075
            ],
            [
              -160.05773595057644,
              70.63075322539075,
              -5.150832208422075
            ],
            [
              -160.0440678090639,
              70.63118504213963,
              14.649167791577925
            ],
            [
              -160.0428634918632,
              70.62662116473167,
              14.649167791577925
            ],
            [
              -160.0565289401525,
              70.62618944551049,
              -5.150832208422075
            ]
          ]
        ]
      },
      "bbox": [
        -160.057736,
        70.62618945,
        -5.150832208,
        -160.0428635,
        70.63118504,
        14.64916779
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:21Z",
        "pc:count": 7842392,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228377.5845,
            "count": 7842392,
            "maximum": -228127.3761,
            "minimum": -228646.1361,
            "name": "X",
            "position": 0,
            "stddev": 133.6080138,
            "variance": 17851.10135
          },
          {
            "average": 2304068.747,
            "count": 7842392,
            "maximum": 2304336.061,
            "minimum": 2303835.121,
            "name": "Y",
            "position": 1,
            "stddev": 129.7800404,
            "variance": 16842.85889
          },
          {
            "average": 7.571845962,
            "count": 7842392,
            "maximum": 14.64916779,
            "minimum": -5.150832208,
            "name": "Z",
            "position": 2,
            "stddev": 2.118896893,
            "variance": 4.489724044
          },
          {
            "average": 41950.80726,
            "count": 7842392,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 11284.34721,
            "variance": 127336492
          },
          {
            "average": 1,
            "count": 7842392,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 7842392,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4928242557,
            "count": 7842392,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999485379,
            "variance": 0.2499485406
          },
          {
            "average": 0.0002365349756,
            "count": 7842392,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01537787557,
            "variance": 0.0002364790569
          },
          {
            "average": 1.189405095,
            "count": 7842392,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3932606658,
            "variance": 0.1546539513
          },
          {
            "average": 4.779765829,
            "count": 7842392,
            "maximum": 21.39599991,
            "minimum": -16.12199974,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.39897208,
            "variance": 108.1386204
          },
          {
            "average": 0.5035552928,
            "count": 7842392,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999873916,
            "variance": 0.2499873918
          },
          {
            "average": 588.8228458,
            "count": 7842392,
            "maximum": 751,
            "minimum": 557,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 68.97517997,
            "variance": 4757.575452
          },
          {
            "average": 220757673.9,
            "count": 7842392,
            "maximum": 222303701.4,
            "minimum": 220476313.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 658880.7304,
            "variance": 434123817000.0
          },
          {
            "average": 0.5035552928,
            "count": 7842392,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999873916,
            "variance": 0.2499873918
          },
          {
            "average": 0,
            "count": 7842392,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7842392,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7842392,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2594389569,
            "count": 7842392,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.438326829,
            "variance": 0.192130409
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228646.1361,
          2303835.121,
          -5.150832208,
          -228127.3761,
          2304336.061,
          14.64916779
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228646.13613424476,
                2303835.1206900305,
                -5.150832208422075
              ],
              [
                -228646.13613424476,
                2304336.060690031,
                -5.150832208422075
              ],
              [
                -228127.37613424475,
                2304336.060690031,
                14.649167791577925
              ],
              [
                -228127.37613424475,
                2303835.1206900305,
                14.649167791577925
              ],
              [
                -228646.13613424476,
                2303835.1206900305,
                -5.150832208422075
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:21+00:00",
        "end_time": "2018-09-08T21:11:53+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0746.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0746.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0746.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0746.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.057736,
            70.62618945,
            -5.150832208,
            -160.0428635,
            70.63118504,
            14.64916779
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0565289401525,
                  70.62618944551049,
                  -5.150832208422075
                ],
                [
                  -160.05773595057644,
                  70.63075322539075,
                  -5.150832208422075
                ],
                [
                  -160.0440678090639,
                  70.63118504213963,
                  14.649167791577925
                ],
                [
                  -160.0428634918632,
                  70.62662116473167,
                  14.649167791577925
                ],
                [
                  -160.0565289401525,
                  70.62618944551049,
                  -5.150832208422075
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0746.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0746.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:21Z",
            "pc:count": 7842392,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228377.5845,
                "count": 7842392,
                "maximum": -228127.3761,
                "minimum": -228646.1361,
                "name": "X",
                "position": 0,
                "stddev": 133.6080138,
                "variance": 17851.10135
              },
              {
                "average": 2304068.747,
                "count": 7842392,
                "maximum": 2304336.061,
                "minimum": 2303835.121,
                "name": "Y",
                "position": 1,
                "stddev": 129.7800404,
                "variance": 16842.85889
              },
              {
                "average": 7.571845962,
                "count": 7842392,
                "maximum": 14.64916779,
                "minimum": -5.150832208,
                "name": "Z",
                "position": 2,
                "stddev": 2.118896893,
                "variance": 4.489724044
              },
              {
                "average": 41950.80726,
                "count": 7842392,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 11284.34721,
                "variance": 127336492
              },
              {
                "average": 1,
                "count": 7842392,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 7842392,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4928242557,
                "count": 7842392,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999485379,
                "variance": 0.2499485406
              },
              {
                "average": 0.0002365349756,
                "count": 7842392,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01537787557,
                "variance": 0.0002364790569
              },
              {
                "average": 1.189405095,
                "count": 7842392,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3932606658,
                "variance": 0.1546539513
              },
              {
                "average": 4.779765829,
                "count": 7842392,
                "maximum": 21.39599991,
                "minimum": -16.12199974,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.39897208,
                "variance": 108.1386204
              },
              {
                "average": 0.5035552928,
                "count": 7842392,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999873916,
                "variance": 0.2499873918
              },
              {
                "average": 588.8228458,
                "count": 7842392,
                "maximum": 751,
                "minimum": 557,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 68.97517997,
                "variance": 4757.575452
              },
              {
                "average": 220757673.9,
                "count": 7842392,
                "maximum": 222303701.4,
                "minimum": 220476313.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 658880.7304,
                "variance": 434123817000.0
              },
              {
                "average": 0.5035552928,
                "count": 7842392,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999873916,
                "variance": 0.2499873918
              },
              {
                "average": 0,
                "count": 7842392,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7842392,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7842392,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2594389569,
                "count": 7842392,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.438326829,
                "variance": 0.192130409
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228646.1361,
              2303835.121,
              -5.150832208,
              -228127.3761,
              2304336.061,
              14.64916779
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228646.13613424476,
                    2303835.1206900305,
                    -5.150832208422075
                  ],
                  [
                    -228646.13613424476,
                    2304336.060690031,
                    -5.150832208422075
                  ],
                  [
                    -228127.37613424475,
                    2304336.060690031,
                    14.649167791577925
                  ],
                  [
                    -228127.37613424475,
                    2303835.1206900305,
                    14.649167791577925
                  ],
                  [
                    -228646.13613424476,
                    2303835.1206900305,
                    -5.150832208422075
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:21+00:00",
            "end_time": "2018-09-08T21:11:53+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0871.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.00515058531232,
              70.6461360356728,
              9.84247704076882
            ],
            [
              -160.0063487119685,
              70.65070177341096,
              9.84247704076882
            ],
            [
              -159.99266772538323,
              70.6511299834706,
              16.402477040768822
            ],
            [
              -159.99147229804672,
              70.64656414886956,
              16.402477040768822
            ],
            [
              -160.00515058531232,
              70.6461360356728,
              9.84247704076882
            ]
          ]
        ]
      },
      "bbox": [
        -160.0063487,
        70.64613604,
        9.842477041,
        -159.9914723,
        70.65112998,
        16.40247704
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:40Z",
        "pc:count": 5368706,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226249.3458,
            "count": 5368706,
            "maximum": -225996.1762,
            "minimum": -226514.9362,
            "name": "X",
            "position": 0,
            "stddev": 139.4771096,
            "variance": 19453.8641
          },
          {
            "average": 2306076.789,
            "count": 5368706,
            "maximum": 2306331.354,
            "minimum": 2305830.294,
            "name": "Y",
            "position": 1,
            "stddev": 127.8576704,
            "variance": 16347.58388
          },
          {
            "average": 11.76510451,
            "count": 5368706,
            "maximum": 16.40247704,
            "minimum": 9.842477041,
            "name": "Z",
            "position": 2,
            "stddev": 1.073707522,
            "variance": 1.152847844
          },
          {
            "average": 35604.07779,
            "count": 5368706,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 13006.9473,
            "variance": 169180678.2
          },
          {
            "average": 1,
            "count": 5368706,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 5368706,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4991260464,
            "count": 5368706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999992828,
            "variance": 0.2499992828
          },
          {
            "average": 0.0003049151881,
            "count": 5368706,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01745916011,
            "variance": 0.0003048222716
          },
          {
            "average": 1.456349444,
            "count": 5368706,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.471517621,
            "variance": 2.16536411
          },
          {
            "average": 1.743848208,
            "count": 5368706,
            "maximum": 21.38400078,
            "minimum": -20.68199921,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.56328616,
            "variance": 111.5830145
          },
          {
            "average": 0.5077156395,
            "count": 5368706,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999405119,
            "variance": 0.2499405155
          },
          {
            "average": 589.2121873,
            "count": 5368706,
            "maximum": 752,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 77.26530951,
            "variance": 5969.928054
          },
          {
            "average": 220815401.9,
            "count": 5368706,
            "maximum": 222304080.6,
            "minimum": 220475031.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 711245.3529,
            "variance": 505869952000.0
          },
          {
            "average": 0.5077156395,
            "count": 5368706,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999405119,
            "variance": 0.2499405155
          },
          {
            "average": 0,
            "count": 5368706,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5368706,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5368706,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2524783439,
            "count": 5368706,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4344341894,
            "variance": 0.1887330649
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226514.9362,
          2305830.294,
          9.842477041,
          -225996.1762,
          2306331.354,
          16.40247704
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226514.93623802785,
                2305830.2944706976,
                9.84247704076882
              ],
              [
                -226514.93623802785,
                2306331.354470697,
                9.84247704076882
              ],
              [
                -225996.17623802784,
                2306331.354470697,
                16.402477040768822
              ],
              [
                -225996.17623802784,
                2305830.2944706976,
                16.402477040768822
              ],
              [
                -226514.93623802785,
                2305830.2944706976,
                9.84247704076882
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:40+00:00",
        "end_time": "2018-09-08T20:50:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0871.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0871.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0871.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0871.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0063487,
            70.64613604,
            9.842477041,
            -159.9914723,
            70.65112998,
            16.40247704
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.00515058531232,
                  70.6461360356728,
                  9.84247704076882
                ],
                [
                  -160.0063487119685,
                  70.65070177341096,
                  9.84247704076882
                ],
                [
                  -159.99266772538323,
                  70.6511299834706,
                  16.402477040768822
                ],
                [
                  -159.99147229804672,
                  70.64656414886956,
                  16.402477040768822
                ],
                [
                  -160.00515058531232,
                  70.6461360356728,
                  9.84247704076882
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0871.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0871.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:40Z",
            "pc:count": 5368706,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226249.3458,
                "count": 5368706,
                "maximum": -225996.1762,
                "minimum": -226514.9362,
                "name": "X",
                "position": 0,
                "stddev": 139.4771096,
                "variance": 19453.8641
              },
              {
                "average": 2306076.789,
                "count": 5368706,
                "maximum": 2306331.354,
                "minimum": 2305830.294,
                "name": "Y",
                "position": 1,
                "stddev": 127.8576704,
                "variance": 16347.58388
              },
              {
                "average": 11.76510451,
                "count": 5368706,
                "maximum": 16.40247704,
                "minimum": 9.842477041,
                "name": "Z",
                "position": 2,
                "stddev": 1.073707522,
                "variance": 1.152847844
              },
              {
                "average": 35604.07779,
                "count": 5368706,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 13006.9473,
                "variance": 169180678.2
              },
              {
                "average": 1,
                "count": 5368706,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 5368706,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4991260464,
                "count": 5368706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999992828,
                "variance": 0.2499992828
              },
              {
                "average": 0.0003049151881,
                "count": 5368706,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01745916011,
                "variance": 0.0003048222716
              },
              {
                "average": 1.456349444,
                "count": 5368706,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.471517621,
                "variance": 2.16536411
              },
              {
                "average": 1.743848208,
                "count": 5368706,
                "maximum": 21.38400078,
                "minimum": -20.68199921,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.56328616,
                "variance": 111.5830145
              },
              {
                "average": 0.5077156395,
                "count": 5368706,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999405119,
                "variance": 0.2499405155
              },
              {
                "average": 589.2121873,
                "count": 5368706,
                "maximum": 752,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 77.26530951,
                "variance": 5969.928054
              },
              {
                "average": 220815401.9,
                "count": 5368706,
                "maximum": 222304080.6,
                "minimum": 220475031.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 711245.3529,
                "variance": 505869952000.0
              },
              {
                "average": 0.5077156395,
                "count": 5368706,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999405119,
                "variance": 0.2499405155
              },
              {
                "average": 0,
                "count": 5368706,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5368706,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5368706,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2524783439,
                "count": 5368706,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4344341894,
                "variance": 0.1887330649
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226514.9362,
              2305830.294,
              9.842477041,
              -225996.1762,
              2306331.354,
              16.40247704
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226514.93623802785,
                    2305830.2944706976,
                    9.84247704076882
                  ],
                  [
                    -226514.93623802785,
                    2306331.354470697,
                    9.84247704076882
                  ],
                  [
                    -225996.17623802784,
                    2306331.354470697,
                    16.402477040768822
                  ],
                  [
                    -225996.17623802784,
                    2305830.2944706976,
                    16.402477040768822
                  ],
                  [
                    -226514.93623802785,
                    2305830.2944706976,
                    9.84247704076882
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:40+00:00",
            "end_time": "2018-09-08T20:50:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0770.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0561351662109,
              70.63028486093405,
              1.151794383695741
            ],
            [
              -160.05729738705526,
              70.63467892977937,
              1.151794383695741
            ],
            [
              -160.04362637327299,
              70.63511074195743,
              53.71179438369575
            ],
            [
              -160.04246674644878,
              70.63071657919058,
              53.71179438369575
            ],
            [
              -160.0561351662109,
              70.63028486093405,
              1.151794383695741
            ]
          ]
        ]
      },
      "bbox": [
        -160.0572974,
        70.63028486,
        1.151794384,
        -160.0424667,
        70.63511074,
        53.71179438
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:26Z",
        "pc:count": 5163688,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228302.5948,
            "count": 5163688,
            "maximum": -228071.7651,
            "minimum": -228590.5451,
            "name": "X",
            "position": 0,
            "stddev": 129.0151039,
            "variance": 16644.89705
          },
          {
            "average": 2304503.166,
            "count": 5163688,
            "maximum": 2304761.867,
            "minimum": 2304279.567,
            "name": "Y",
            "position": 1,
            "stddev": 120.0150304,
            "variance": 14403.60752
          },
          {
            "average": 4.318044934,
            "count": 5163688,
            "maximum": 53.71179438,
            "minimum": 1.151794384,
            "name": "Z",
            "position": 2,
            "stddev": 2.06670427,
            "variance": 4.271266539
          },
          {
            "average": 32474.21493,
            "count": 5163688,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 14828.80682,
            "variance": 219893511.6
          },
          {
            "average": 1.000006584,
            "count": 5163688,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002566008402,
            "variance": 6.584399118e-06
          },
          {
            "average": 1.000013169,
            "count": 5163688,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.003628871936,
            "variance": 1.316871153e-05
          },
          {
            "average": 0.4938247625,
            "count": 5163688,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999619134,
            "variance": 0.2499619148
          },
          {
            "average": 0.0002457545847,
            "count": 5163688,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01567463674,
            "variance": 0.000245694237
          },
          {
            "average": 2.091116659,
            "count": 5163688,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.447397667,
            "variance": 5.989755342
          },
          {
            "average": 3.811119246,
            "count": 5163688,
            "maximum": 21.39599991,
            "minimum": -16.07999992,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.47447895,
            "variance": 109.7147092
          },
          {
            "average": 0.4952719839,
            "count": 5163688,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999776938,
            "variance": 0.2499776943
          },
          {
            "average": 599.4316212,
            "count": 5163688,
            "maximum": 751,
            "minimum": 555,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 80.26376191,
            "variance": 6442.271477
          },
          {
            "average": 220878843.4,
            "count": 5163688,
            "maximum": 222303706.8,
            "minimum": 220475934.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 757269.6273,
            "variance": 573457288400.0
          },
          {
            "average": 0.4952719839,
            "count": 5163688,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999776938,
            "variance": 0.2499776943
          },
          {
            "average": 0,
            "count": 5163688,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5163688,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5163688,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1773412724,
            "count": 5163688,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3819572931,
            "variance": 0.1458913737
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228590.5451,
          2304279.567,
          1.151794384,
          -228071.7651,
          2304761.867,
          53.71179438
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228590.5450739609,
                2304279.567427747,
                1.151794383695741
              ],
              [
                -228590.5450739609,
                2304761.8674277468,
                1.151794383695741
              ],
              [
                -228071.76507396088,
                2304761.8674277468,
                53.71179438369575
              ],
              [
                -228071.76507396088,
                2304279.567427747,
                53.71179438369575
              ],
              [
                -228590.5450739609,
                2304279.567427747,
                1.151794383695741
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:26+00:00",
        "end_time": "2018-09-08T21:05:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0770.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0770.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0770.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0770.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0572974,
            70.63028486,
            1.151794384,
            -160.0424667,
            70.63511074,
            53.71179438
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0561351662109,
                  70.63028486093405,
                  1.151794383695741
                ],
                [
                  -160.05729738705526,
                  70.63467892977937,
                  1.151794383695741
                ],
                [
                  -160.04362637327299,
                  70.63511074195743,
                  53.71179438369575
                ],
                [
                  -160.04246674644878,
                  70.63071657919058,
                  53.71179438369575
                ],
                [
                  -160.0561351662109,
                  70.63028486093405,
                  1.151794383695741
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0770.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0770.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:26Z",
            "pc:count": 5163688,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228302.5948,
                "count": 5163688,
                "maximum": -228071.7651,
                "minimum": -228590.5451,
                "name": "X",
                "position": 0,
                "stddev": 129.0151039,
                "variance": 16644.89705
              },
              {
                "average": 2304503.166,
                "count": 5163688,
                "maximum": 2304761.867,
                "minimum": 2304279.567,
                "name": "Y",
                "position": 1,
                "stddev": 120.0150304,
                "variance": 14403.60752
              },
              {
                "average": 4.318044934,
                "count": 5163688,
                "maximum": 53.71179438,
                "minimum": 1.151794384,
                "name": "Z",
                "position": 2,
                "stddev": 2.06670427,
                "variance": 4.271266539
              },
              {
                "average": 32474.21493,
                "count": 5163688,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 14828.80682,
                "variance": 219893511.6
              },
              {
                "average": 1.000006584,
                "count": 5163688,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002566008402,
                "variance": 6.584399118e-06
              },
              {
                "average": 1.000013169,
                "count": 5163688,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.003628871936,
                "variance": 1.316871153e-05
              },
              {
                "average": 0.4938247625,
                "count": 5163688,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999619134,
                "variance": 0.2499619148
              },
              {
                "average": 0.0002457545847,
                "count": 5163688,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01567463674,
                "variance": 0.000245694237
              },
              {
                "average": 2.091116659,
                "count": 5163688,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.447397667,
                "variance": 5.989755342
              },
              {
                "average": 3.811119246,
                "count": 5163688,
                "maximum": 21.39599991,
                "minimum": -16.07999992,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.47447895,
                "variance": 109.7147092
              },
              {
                "average": 0.4952719839,
                "count": 5163688,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999776938,
                "variance": 0.2499776943
              },
              {
                "average": 599.4316212,
                "count": 5163688,
                "maximum": 751,
                "minimum": 555,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 80.26376191,
                "variance": 6442.271477
              },
              {
                "average": 220878843.4,
                "count": 5163688,
                "maximum": 222303706.8,
                "minimum": 220475934.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 757269.6273,
                "variance": 573457288400.0
              },
              {
                "average": 0.4952719839,
                "count": 5163688,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999776938,
                "variance": 0.2499776943
              },
              {
                "average": 0,
                "count": 5163688,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5163688,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5163688,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1773412724,
                "count": 5163688,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3819572931,
                "variance": 0.1458913737
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228590.5451,
              2304279.567,
              1.151794384,
              -228071.7651,
              2304761.867,
              53.71179438
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228590.5450739609,
                    2304279.567427747,
                    1.151794383695741
                  ],
                  [
                    -228590.5450739609,
                    2304761.8674277468,
                    1.151794383695741
                  ],
                  [
                    -228071.76507396088,
                    2304761.8674277468,
                    53.71179438369575
                  ],
                  [
                    -228071.76507396088,
                    2304279.567427747,
                    53.71179438369575
                  ],
                  [
                    -228590.5450739609,
                    2304279.567427747,
                    1.151794383695741
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:26+00:00",
            "end_time": "2018-09-08T21:05:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0749.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.01926207786627,
              70.6302614062109,
              0.876025081377709
            ],
            [
              -160.01929871630182,
              70.63040080460918,
              0.876025081377709
            ],
            [
              -160.01863632177395,
              70.6304216209816,
              1.676025081377709
            ],
            [
              -160.01859968732603,
              70.63028222243965,
              1.676025081377709
            ],
            [
              -160.01926207786627,
              70.6302614062109,
              0.876025081377709
            ]
          ]
        ]
      },
      "bbox": [
        -160.0192987,
        70.63026141,
        0.8760250814,
        -160.0185997,
        70.63042162,
        1.676025081
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:11Z",
        "pc:count": 4317,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227193.8117,
            "count": 4317,
            "maximum": -227177.6769,
            "minimum": -227202.8169,
            "name": "X",
            "position": 0,
            "stddev": 5.758969394,
            "variance": 33.16572848
          },
          {
            "average": 2304159.814,
            "count": 4317,
            "maximum": 2304165.78,
            "minimum": 2304150.48,
            "name": "Y",
            "position": 1,
            "stddev": 3.453268874,
            "variance": 11.92506592
          },
          {
            "average": 1.444148778,
            "count": 4317,
            "maximum": 1.676025081,
            "minimum": 0.8760250814,
            "name": "Z",
            "position": 2,
            "stddev": 0.1413758047,
            "variance": 0.01998711815
          },
          {
            "average": 17679.72759,
            "count": 4317,
            "maximum": 65535,
            "minimum": 1500,
            "name": "Intensity",
            "position": 3,
            "stddev": 12451.60814,
            "variance": 155042545.4
          },
          {
            "average": 1,
            "count": 4317,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4317,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5089182303,
            "count": 4317,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999783703,
            "variance": 0.2499783707
          },
          {
            "average": 0.002084781098,
            "count": 4317,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.04561706714,
            "variance": 0.002080916814
          },
          {
            "average": 2.71739634,
            "count": 4317,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.933271774,
            "variance": 8.604083303
          },
          {
            "average": -1.17809034,
            "count": 4317,
            "maximum": 13.61999989,
            "minimum": -20.70000076,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.78658774,
            "variance": 60.63094864
          },
          {
            "average": 0.4987259671,
            "count": 4317,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.5000562973,
            "variance": 0.2500563005
          },
          {
            "average": 586.343294,
            "count": 4317,
            "maximum": 752,
            "minimum": 557,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 68.43003306,
            "variance": 4682.669425
          },
          {
            "average": 220743666.5,
            "count": 4317,
            "maximum": 222304111.6,
            "minimum": 220476334.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 645659.2731,
            "variance": 416875896900.0
          },
          {
            "average": 0.4987259671,
            "count": 4317,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.5000562973,
            "variance": 0.2500563005
          },
          {
            "average": 0,
            "count": 4317,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4317,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4317,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04239054899,
            "count": 4317,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2015018504,
            "variance": 0.04060299572
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227202.8169,
          2304150.48,
          0.8760250814,
          -227177.6769,
          2304165.78,
          1.676025081
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227202.8168842956,
                2304150.4802787392,
                0.876025081377709
              ],
              [
                -227202.8168842956,
                2304165.780278739,
                0.876025081377709
              ],
              [
                -227177.6768842956,
                2304165.780278739,
                1.676025081377709
              ],
              [
                -227177.6768842956,
                2304150.4802787392,
                1.676025081377709
              ],
              [
                -227202.8168842956,
                2304150.4802787392,
                0.876025081377709
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:11+00:00",
        "end_time": "2018-09-08T21:12:14+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0749.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0749.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0749.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0749.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0192987,
            70.63026141,
            0.8760250814,
            -160.0185997,
            70.63042162,
            1.676025081
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.01926207786627,
                  70.6302614062109,
                  0.876025081377709
                ],
                [
                  -160.01929871630182,
                  70.63040080460918,
                  0.876025081377709
                ],
                [
                  -160.01863632177395,
                  70.6304216209816,
                  1.676025081377709
                ],
                [
                  -160.01859968732603,
                  70.63028222243965,
                  1.676025081377709
                ],
                [
                  -160.01926207786627,
                  70.6302614062109,
                  0.876025081377709
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0749.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0749.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:11Z",
            "pc:count": 4317,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227193.8117,
                "count": 4317,
                "maximum": -227177.6769,
                "minimum": -227202.8169,
                "name": "X",
                "position": 0,
                "stddev": 5.758969394,
                "variance": 33.16572848
              },
              {
                "average": 2304159.814,
                "count": 4317,
                "maximum": 2304165.78,
                "minimum": 2304150.48,
                "name": "Y",
                "position": 1,
                "stddev": 3.453268874,
                "variance": 11.92506592
              },
              {
                "average": 1.444148778,
                "count": 4317,
                "maximum": 1.676025081,
                "minimum": 0.8760250814,
                "name": "Z",
                "position": 2,
                "stddev": 0.1413758047,
                "variance": 0.01998711815
              },
              {
                "average": 17679.72759,
                "count": 4317,
                "maximum": 65535,
                "minimum": 1500,
                "name": "Intensity",
                "position": 3,
                "stddev": 12451.60814,
                "variance": 155042545.4
              },
              {
                "average": 1,
                "count": 4317,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4317,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5089182303,
                "count": 4317,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999783703,
                "variance": 0.2499783707
              },
              {
                "average": 0.002084781098,
                "count": 4317,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.04561706714,
                "variance": 0.002080916814
              },
              {
                "average": 2.71739634,
                "count": 4317,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.933271774,
                "variance": 8.604083303
              },
              {
                "average": -1.17809034,
                "count": 4317,
                "maximum": 13.61999989,
                "minimum": -20.70000076,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.78658774,
                "variance": 60.63094864
              },
              {
                "average": 0.4987259671,
                "count": 4317,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.5000562973,
                "variance": 0.2500563005
              },
              {
                "average": 586.343294,
                "count": 4317,
                "maximum": 752,
                "minimum": 557,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 68.43003306,
                "variance": 4682.669425
              },
              {
                "average": 220743666.5,
                "count": 4317,
                "maximum": 222304111.6,
                "minimum": 220476334.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 645659.2731,
                "variance": 416875896900.0
              },
              {
                "average": 0.4987259671,
                "count": 4317,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.5000562973,
                "variance": 0.2500563005
              },
              {
                "average": 0,
                "count": 4317,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4317,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4317,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04239054899,
                "count": 4317,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2015018504,
                "variance": 0.04060299572
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227202.8169,
              2304150.48,
              0.8760250814,
              -227177.6769,
              2304165.78,
              1.676025081
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227202.8168842956,
                    2304150.4802787392,
                    0.876025081377709
                  ],
                  [
                    -227202.8168842956,
                    2304165.780278739,
                    0.876025081377709
                  ],
                  [
                    -227177.6768842956,
                    2304165.780278739,
                    1.676025081377709
                  ],
                  [
                    -227177.6768842956,
                    2304150.4802787392,
                    1.676025081377709
                  ],
                  [
                    -227202.8168842956,
                    2304150.4802787392,
                    0.876025081377709
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:11+00:00",
            "end_time": "2018-09-08T21:12:14+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0750.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.98127615005333,
              70.62643966923122,
              0.915913076414471
            ],
            [
              -159.9822053667197,
              70.62999765472428,
              0.915913076414471
            ],
            [
              -159.97002820228414,
              70.63037759757377,
              8.495913076414471
            ],
            [
              -159.96910085665735,
              70.62681954518013,
              8.495913076414471
            ],
            [
              -159.98127615005333,
              70.62643966923122,
              0.915913076414471
            ]
          ]
        ]
      },
      "bbox": [
        -159.9822054,
        70.62643967,
        0.9159130764,
        -159.9691009,
        70.6303776,
        8.495913076
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:27Z",
        "pc:count": 2598747,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225513.7642,
            "count": 2598747,
            "maximum": -225348.3262,
            "minimum": -225810.4662,
            "name": "X",
            "position": 0,
            "stddev": 106.8960285,
            "variance": 11426.76091
          },
          {
            "average": 2303859.359,
            "count": 2598747,
            "maximum": 2303995.38,
            "minimum": 2303604.88,
            "name": "Y",
            "position": 1,
            "stddev": 77.09928175,
            "variance": 5944.299247
          },
          {
            "average": 3.980723745,
            "count": 2598747,
            "maximum": 8.495913076,
            "minimum": 0.9159130764,
            "name": "Z",
            "position": 2,
            "stddev": 2.917445717,
            "variance": 8.511489513
          },
          {
            "average": 29057.6825,
            "count": 2598747,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 18176.00662,
            "variance": 330367216.7
          },
          {
            "average": 1.000001154,
            "count": 2598747,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001074430825,
            "variance": 1.154401599e-06
          },
          {
            "average": 1.000002309,
            "count": 2598747,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001519473768,
            "variance": 2.308800532e-06
          },
          {
            "average": 0.5016902376,
            "count": 2598747,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999972393,
            "variance": 0.2499972393
          },
          {
            "average": 0.0003070710616,
            "count": 2598747,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01752075589,
            "variance": 0.000306976887
          },
          {
            "average": 1.73551677,
            "count": 2598747,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.122517413,
            "variance": 4.505080167
          },
          {
            "average": -1.286304877,
            "count": 2598747,
            "maximum": 16.44599915,
            "minimum": -20.71199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.520763776,
            "variance": 90.64494287
          },
          {
            "average": 0.4846139313,
            "count": 2598747,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499763309,
            "variance": 0.249763365
          },
          {
            "average": 589.5553249,
            "count": 2598747,
            "maximum": 754,
            "minimum": 558,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 69.05292462,
            "variance": 4768.306398
          },
          {
            "average": 220752762.6,
            "count": 2598747,
            "maximum": 222304967.8,
            "minimum": 220476523.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 654105.852,
            "variance": 427854465600.0
          },
          {
            "average": 0.4846139313,
            "count": 2598747,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499763309,
            "variance": 0.249763365
          },
          {
            "average": 0,
            "count": 2598747,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2598747,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2598747,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1263978371,
            "count": 2598747,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.332297256,
            "variance": 0.1104214664
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225810.4662,
          2303604.88,
          0.9159130764,
          -225348.3262,
          2303995.38,
          8.495913076
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225810.4662464547,
                2303604.8795447526,
                0.915913076414471
              ],
              [
                -225810.4662464547,
                2303995.3795447526,
                0.915913076414471
              ],
              [
                -225348.32624645467,
                2303995.3795447526,
                8.495913076414471
              ],
              [
                -225348.32624645467,
                2303604.8795447526,
                8.495913076414471
              ],
              [
                -225810.4662464547,
                2303604.8795447526,
                0.915913076414471
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:27+00:00",
        "end_time": "2018-09-08T21:15:23+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0750.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0750.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0750.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0750.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9822054,
            70.62643967,
            0.9159130764,
            -159.9691009,
            70.6303776,
            8.495913076
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.98127615005333,
                  70.62643966923122,
                  0.915913076414471
                ],
                [
                  -159.9822053667197,
                  70.62999765472428,
                  0.915913076414471
                ],
                [
                  -159.97002820228414,
                  70.63037759757377,
                  8.495913076414471
                ],
                [
                  -159.96910085665735,
                  70.62681954518013,
                  8.495913076414471
                ],
                [
                  -159.98127615005333,
                  70.62643966923122,
                  0.915913076414471
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0750.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0750.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:27Z",
            "pc:count": 2598747,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225513.7642,
                "count": 2598747,
                "maximum": -225348.3262,
                "minimum": -225810.4662,
                "name": "X",
                "position": 0,
                "stddev": 106.8960285,
                "variance": 11426.76091
              },
              {
                "average": 2303859.359,
                "count": 2598747,
                "maximum": 2303995.38,
                "minimum": 2303604.88,
                "name": "Y",
                "position": 1,
                "stddev": 77.09928175,
                "variance": 5944.299247
              },
              {
                "average": 3.980723745,
                "count": 2598747,
                "maximum": 8.495913076,
                "minimum": 0.9159130764,
                "name": "Z",
                "position": 2,
                "stddev": 2.917445717,
                "variance": 8.511489513
              },
              {
                "average": 29057.6825,
                "count": 2598747,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 18176.00662,
                "variance": 330367216.7
              },
              {
                "average": 1.000001154,
                "count": 2598747,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001074430825,
                "variance": 1.154401599e-06
              },
              {
                "average": 1.000002309,
                "count": 2598747,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001519473768,
                "variance": 2.308800532e-06
              },
              {
                "average": 0.5016902376,
                "count": 2598747,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999972393,
                "variance": 0.2499972393
              },
              {
                "average": 0.0003070710616,
                "count": 2598747,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01752075589,
                "variance": 0.000306976887
              },
              {
                "average": 1.73551677,
                "count": 2598747,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.122517413,
                "variance": 4.505080167
              },
              {
                "average": -1.286304877,
                "count": 2598747,
                "maximum": 16.44599915,
                "minimum": -20.71199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.520763776,
                "variance": 90.64494287
              },
              {
                "average": 0.4846139313,
                "count": 2598747,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499763309,
                "variance": 0.249763365
              },
              {
                "average": 589.5553249,
                "count": 2598747,
                "maximum": 754,
                "minimum": 558,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 69.05292462,
                "variance": 4768.306398
              },
              {
                "average": 220752762.6,
                "count": 2598747,
                "maximum": 222304967.8,
                "minimum": 220476523.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 654105.852,
                "variance": 427854465600.0
              },
              {
                "average": 0.4846139313,
                "count": 2598747,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499763309,
                "variance": 0.249763365
              },
              {
                "average": 0,
                "count": 2598747,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2598747,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2598747,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1263978371,
                "count": 2598747,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.332297256,
                "variance": 0.1104214664
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225810.4662,
              2303604.88,
              0.9159130764,
              -225348.3262,
              2303995.38,
              8.495913076
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225810.4662464547,
                    2303604.8795447526,
                    0.915913076414471
                  ],
                  [
                    -225810.4662464547,
                    2303995.3795447526,
                    0.915913076414471
                  ],
                  [
                    -225348.32624645467,
                    2303995.3795447526,
                    8.495913076414471
                  ],
                  [
                    -225348.32624645467,
                    2303604.8795447526,
                    8.495913076414471
                  ],
                  [
                    -225810.4662464547,
                    2303604.8795447526,
                    0.915913076414471
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:27+00:00",
            "end_time": "2018-09-08T21:15:23+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0774.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.00671293146846,
              70.63031740871114,
              0.872451580564637
            ],
            [
              -160.00776433584718,
              70.63432545391794,
              0.872451580564637
            ],
            [
              -159.99429869491186,
              70.63474729104199,
              9.792451580564638
            ],
            [
              -159.99324962144547,
              70.63073916214378,
              9.792451580564638
            ],
            [
              -160.00671293146846,
              70.63031740871114,
              0.872451580564637
            ]
          ]
        ]
      },
      "bbox": [
        -160.0077643,
        70.63031741,
        0.8724515806,
        -159.9932496,
        70.63474729,
        9.792451581
      ],
      "properties": {
        "datetime": "2018-09-30T01:02:57Z",
        "pc:count": 4572220,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226461.9036,
            "count": 4572220,
            "maximum": -226218.9182,
            "minimum": -226729.8782,
            "name": "X",
            "position": 0,
            "stddev": 137.4326953,
            "variance": 18887.74573
          },
          {
            "average": 2304352.304,
            "count": 4572220,
            "maximum": 2304553.589,
            "minimum": 2304113.689,
            "name": "Y",
            "position": 1,
            "stddev": 105.8578706,
            "variance": 11205.88877
          },
          {
            "average": 5.926168051,
            "count": 4572220,
            "maximum": 9.792451581,
            "minimum": 0.8724515806,
            "name": "Z",
            "position": 2,
            "stddev": 2.763832145,
            "variance": 7.638768124
          },
          {
            "average": 41142.79245,
            "count": 4572220,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 14898.46068,
            "variance": 221964130.8
          },
          {
            "average": 1.000001312,
            "count": 4572220,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00114554414,
            "variance": 1.312271378e-06
          },
          {
            "average": 1.000002625,
            "count": 4572220,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001620042997,
            "variance": 2.624539311e-06
          },
          {
            "average": 0.5025591507,
            "count": 4572220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999935054,
            "variance": 0.2499935054
          },
          {
            "average": 0.0002377400912,
            "count": 4572220,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01541699137,
            "variance": 0.0002376836229
          },
          {
            "average": 1.524916343,
            "count": 4572220,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.597732112,
            "variance": 2.552747901
          },
          {
            "average": 1.183882249,
            "count": 4572220,
            "maximum": 21.4260006,
            "minimum": -16.21199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.36096867,
            "variance": 107.3496718
          },
          {
            "average": 0.5188542983,
            "count": 4572220,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996444436,
            "variance": 0.24964457
          },
          {
            "average": 589.1910573,
            "count": 4572220,
            "maximum": 753,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 71.93735754,
            "variance": 5174.98341
          },
          {
            "average": 220774276.8,
            "count": 4572220,
            "maximum": 222304577.7,
            "minimum": 220476137.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 675033.3763,
            "variance": 455670059100.0
          },
          {
            "average": 0.5188542983,
            "count": 4572220,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996444436,
            "variance": 0.24964457
          },
          {
            "average": 0,
            "count": 4572220,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4572220,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4572220,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2352314631,
            "count": 4572220,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4241434441,
            "variance": 0.1798976612
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226729.8782,
          2304113.689,
          0.8724515806,
          -226218.9182,
          2304553.589,
          9.792451581
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226729.87815320896,
                2304113.6887130816,
                0.872451580564637
              ],
              [
                -226729.87815320896,
                2304553.588713082,
                0.872451580564637
              ],
              [
                -226218.91815320894,
                2304553.588713082,
                9.792451580564638
              ],
              [
                -226218.91815320894,
                2304113.6887130816,
                9.792451580564638
              ],
              [
                -226729.87815320896,
                2304113.6887130816,
                0.872451580564637
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:02:57+00:00",
        "end_time": "2018-09-08T21:08:57+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0774.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0774.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0774.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0774.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0077643,
            70.63031741,
            0.8724515806,
            -159.9932496,
            70.63474729,
            9.792451581
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.00671293146846,
                  70.63031740871114,
                  0.872451580564637
                ],
                [
                  -160.00776433584718,
                  70.63432545391794,
                  0.872451580564637
                ],
                [
                  -159.99429869491186,
                  70.63474729104199,
                  9.792451580564638
                ],
                [
                  -159.99324962144547,
                  70.63073916214378,
                  9.792451580564638
                ],
                [
                  -160.00671293146846,
                  70.63031740871114,
                  0.872451580564637
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0774.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0774.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:02:57Z",
            "pc:count": 4572220,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226461.9036,
                "count": 4572220,
                "maximum": -226218.9182,
                "minimum": -226729.8782,
                "name": "X",
                "position": 0,
                "stddev": 137.4326953,
                "variance": 18887.74573
              },
              {
                "average": 2304352.304,
                "count": 4572220,
                "maximum": 2304553.589,
                "minimum": 2304113.689,
                "name": "Y",
                "position": 1,
                "stddev": 105.8578706,
                "variance": 11205.88877
              },
              {
                "average": 5.926168051,
                "count": 4572220,
                "maximum": 9.792451581,
                "minimum": 0.8724515806,
                "name": "Z",
                "position": 2,
                "stddev": 2.763832145,
                "variance": 7.638768124
              },
              {
                "average": 41142.79245,
                "count": 4572220,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 14898.46068,
                "variance": 221964130.8
              },
              {
                "average": 1.000001312,
                "count": 4572220,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00114554414,
                "variance": 1.312271378e-06
              },
              {
                "average": 1.000002625,
                "count": 4572220,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001620042997,
                "variance": 2.624539311e-06
              },
              {
                "average": 0.5025591507,
                "count": 4572220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999935054,
                "variance": 0.2499935054
              },
              {
                "average": 0.0002377400912,
                "count": 4572220,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01541699137,
                "variance": 0.0002376836229
              },
              {
                "average": 1.524916343,
                "count": 4572220,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.597732112,
                "variance": 2.552747901
              },
              {
                "average": 1.183882249,
                "count": 4572220,
                "maximum": 21.4260006,
                "minimum": -16.21199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.36096867,
                "variance": 107.3496718
              },
              {
                "average": 0.5188542983,
                "count": 4572220,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996444436,
                "variance": 0.24964457
              },
              {
                "average": 589.1910573,
                "count": 4572220,
                "maximum": 753,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 71.93735754,
                "variance": 5174.98341
              },
              {
                "average": 220774276.8,
                "count": 4572220,
                "maximum": 222304577.7,
                "minimum": 220476137.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 675033.3763,
                "variance": 455670059100.0
              },
              {
                "average": 0.5188542983,
                "count": 4572220,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996444436,
                "variance": 0.24964457
              },
              {
                "average": 0,
                "count": 4572220,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4572220,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4572220,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2352314631,
                "count": 4572220,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4241434441,
                "variance": 0.1798976612
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226729.8782,
              2304113.689,
              0.8724515806,
              -226218.9182,
              2304553.589,
              9.792451581
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226729.87815320896,
                    2304113.6887130816,
                    0.872451580564637
                  ],
                  [
                    -226729.87815320896,
                    2304553.588713082,
                    0.872451580564637
                  ],
                  [
                    -226218.91815320894,
                    2304553.588713082,
                    9.792451580564638
                  ],
                  [
                    -226218.91815320894,
                    2304113.6887130816,
                    9.792451580564638
                  ],
                  [
                    -226729.87815320896,
                    2304113.6887130816,
                    0.872451580564637
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:02:57+00:00",
            "end_time": "2018-09-08T21:08:57+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0872.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.99280228724163,
              70.6460009852331,
              6.258448385386986
            ],
            [
              -159.99399809307772,
              70.65056734294538,
              6.258448385386986
            ],
            [
              -159.98031326440744,
              70.65099478872602,
              21.578448385386984
            ],
            [
              -159.9791201590943,
              70.64642833431131,
              21.578448385386984
            ],
            [
              -159.99280228724163,
              70.6460009852331,
              6.258448385386986
            ]
          ]
        ]
      },
      "bbox": [
        -159.9939981,
        70.64600099,
        6.258448385,
        -159.9791202,
        70.65099479,
        21.57844839
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:40Z",
        "pc:count": 7914582,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225786.6212,
            "count": 7914582,
            "maximum": -225532.8535,
            "minimum": -226051.7535,
            "name": "X",
            "position": 0,
            "stddev": 133.16325,
            "variance": 17732.45115
          },
          {
            "average": 2306019.567,
            "count": 7914582,
            "maximum": 2306274.64,
            "minimum": 2305773.52,
            "name": "Y",
            "position": 1,
            "stddev": 127.0678974,
            "variance": 16146.25056
          },
          {
            "average": 14.23125307,
            "count": 7914582,
            "maximum": 21.57844839,
            "minimum": 6.258448385,
            "name": "Z",
            "position": 2,
            "stddev": 2.138946687,
            "variance": 4.57509293
          },
          {
            "average": 43453.14019,
            "count": 7914582,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 10782.96186,
            "variance": 116272266.5
          },
          {
            "average": 1.000003032,
            "count": 7914582,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00174136976,
            "variance": 3.03236864e-06
          },
          {
            "average": 1.000006065,
            "count": 7914582,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002462664997,
            "variance": 6.064718889e-06
          },
          {
            "average": 0.5064262396,
            "count": 7914582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999587333,
            "variance": 0.249958735
          },
          {
            "average": 0.0001906607323,
            "count": 7914582,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01380667972,
            "variance": 0.0001906244049
          },
          {
            "average": 1.199396633,
            "count": 7914582,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4005426232,
            "variance": 0.160434393
          },
          {
            "average": -2.071829735,
            "count": 7914582,
            "maximum": 16.46999931,
            "minimum": -20.71199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.943280029,
            "variance": 98.86881773
          },
          {
            "average": 0.5012255859,
            "count": 7914582,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999985295,
            "variance": 0.2499985295
          },
          {
            "average": 586.2578049,
            "count": 7914582,
            "maximum": 752,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 71.79345479,
            "variance": 5154.300151
          },
          {
            "average": 220765136.5,
            "count": 7914582,
            "maximum": 222304080.6,
            "minimum": 220475024.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 666933.4446,
            "variance": 444800219500.0
          },
          {
            "average": 0.5012255859,
            "count": 7914582,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999985295,
            "variance": 0.2499985295
          },
          {
            "average": 0,
            "count": 7914582,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7914582,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 7914582,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1546365936,
            "count": 7914582,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3615579262,
            "variance": 0.130724134
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226051.7535,
          2305773.52,
          6.258448385,
          -225532.8535,
          2306274.64,
          21.57844839
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226051.75350114866,
                2305773.519564387,
                6.258448385386986
              ],
              [
                -226051.75350114866,
                2306274.639564387,
                6.258448385386986
              ],
              [
                -225532.85350114864,
                2306274.639564387,
                21.578448385386984
              ],
              [
                -225532.85350114864,
                2305773.519564387,
                21.578448385386984
              ],
              [
                -226051.75350114866,
                2305773.519564387,
                6.258448385386986
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:40+00:00",
        "end_time": "2018-09-08T20:50:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0872.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0872.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0872.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0872.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9939981,
            70.64600099,
            6.258448385,
            -159.9791202,
            70.65099479,
            21.57844839
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.99280228724163,
                  70.6460009852331,
                  6.258448385386986
                ],
                [
                  -159.99399809307772,
                  70.65056734294538,
                  6.258448385386986
                ],
                [
                  -159.98031326440744,
                  70.65099478872602,
                  21.578448385386984
                ],
                [
                  -159.9791201590943,
                  70.64642833431131,
                  21.578448385386984
                ],
                [
                  -159.99280228724163,
                  70.6460009852331,
                  6.258448385386986
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0872.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0872.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:40Z",
            "pc:count": 7914582,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225786.6212,
                "count": 7914582,
                "maximum": -225532.8535,
                "minimum": -226051.7535,
                "name": "X",
                "position": 0,
                "stddev": 133.16325,
                "variance": 17732.45115
              },
              {
                "average": 2306019.567,
                "count": 7914582,
                "maximum": 2306274.64,
                "minimum": 2305773.52,
                "name": "Y",
                "position": 1,
                "stddev": 127.0678974,
                "variance": 16146.25056
              },
              {
                "average": 14.23125307,
                "count": 7914582,
                "maximum": 21.57844839,
                "minimum": 6.258448385,
                "name": "Z",
                "position": 2,
                "stddev": 2.138946687,
                "variance": 4.57509293
              },
              {
                "average": 43453.14019,
                "count": 7914582,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 10782.96186,
                "variance": 116272266.5
              },
              {
                "average": 1.000003032,
                "count": 7914582,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00174136976,
                "variance": 3.03236864e-06
              },
              {
                "average": 1.000006065,
                "count": 7914582,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002462664997,
                "variance": 6.064718889e-06
              },
              {
                "average": 0.5064262396,
                "count": 7914582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999587333,
                "variance": 0.249958735
              },
              {
                "average": 0.0001906607323,
                "count": 7914582,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01380667972,
                "variance": 0.0001906244049
              },
              {
                "average": 1.199396633,
                "count": 7914582,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4005426232,
                "variance": 0.160434393
              },
              {
                "average": -2.071829735,
                "count": 7914582,
                "maximum": 16.46999931,
                "minimum": -20.71199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.943280029,
                "variance": 98.86881773
              },
              {
                "average": 0.5012255859,
                "count": 7914582,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999985295,
                "variance": 0.2499985295
              },
              {
                "average": 586.2578049,
                "count": 7914582,
                "maximum": 752,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 71.79345479,
                "variance": 5154.300151
              },
              {
                "average": 220765136.5,
                "count": 7914582,
                "maximum": 222304080.6,
                "minimum": 220475024.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 666933.4446,
                "variance": 444800219500.0
              },
              {
                "average": 0.5012255859,
                "count": 7914582,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999985295,
                "variance": 0.2499985295
              },
              {
                "average": 0,
                "count": 7914582,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7914582,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 7914582,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1546365936,
                "count": 7914582,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3615579262,
                "variance": 0.130724134
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226051.7535,
              2305773.52,
              6.258448385,
              -225532.8535,
              2306274.64,
              21.57844839
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226051.75350114866,
                    2305773.519564387,
                    6.258448385386986
                  ],
                  [
                    -226051.75350114866,
                    2306274.639564387,
                    6.258448385386986
                  ],
                  [
                    -225532.85350114864,
                    2306274.639564387,
                    21.578448385386984
                  ],
                  [
                    -225532.85350114864,
                    2305773.519564387,
                    21.578448385386984
                  ],
                  [
                    -226051.75350114866,
                    2305773.519564387,
                    6.258448385386986
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:40+00:00",
            "end_time": "2018-09-08T20:50:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0751.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9698025613745,
              70.62526159131478,
              0.917898909700428
            ],
            [
              -159.97099271448758,
              70.62982752734077,
              0.917898909700428
            ],
            [
              -159.95768608576626,
              70.63024189063869,
              10.737898909700428
            ],
            [
              -159.95649855641824,
              70.62567586098773,
              10.737898909700428
            ],
            [
              -159.9698025613745,
              70.62526159131478,
              0.917898909700428
            ]
          ]
        ]
      },
      "bbox": [
        -159.9709927,
        70.62526159,
        0.9178989097,
        -159.9564986,
        70.63024189,
        10.73789891
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:28Z",
        "pc:count": 6490885,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225139.8649,
            "count": 6490885,
            "maximum": -224885.0338,
            "minimum": -225390.0338,
            "name": "X",
            "position": 0,
            "stddev": 128.5298019,
            "variance": 16519.90998
          },
          {
            "average": 2303726.821,
            "count": 6490885,
            "maximum": 2303938.769,
            "minimum": 2303437.649,
            "name": "Y",
            "position": 1,
            "stddev": 123.437373,
            "variance": 15236.78506
          },
          {
            "average": 6.249927288,
            "count": 6490885,
            "maximum": 10.73789891,
            "minimum": 0.9178989097,
            "name": "Z",
            "position": 2,
            "stddev": 3.350445696,
            "variance": 11.22548636
          },
          {
            "average": 36833.11144,
            "count": 6490885,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 16852.56706,
            "variance": 284009016.7
          },
          {
            "average": 1.000002157,
            "count": 6490885,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001468627397,
            "variance": 2.15686643e-06
          },
          {
            "average": 1.000004314,
            "count": 6490885,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002076950543,
            "variance": 4.313723557e-06
          },
          {
            "average": 0.5062107864,
            "count": 6490885,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999614632,
            "variance": 0.2499614646
          },
          {
            "average": 0.0002241604958,
            "count": 6490885,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01497031337,
            "variance": 0.0002241102824
          },
          {
            "average": 1.561864214,
            "count": 6490885,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.753517676,
            "variance": 3.074824239
          },
          {
            "average": -1.849817426,
            "count": 6490885,
            "maximum": 16.75799942,
            "minimum": -20.80200005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.328477386,
            "variance": 87.02049035
          },
          {
            "average": 0.5104022025,
            "count": 6490885,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499891821,
            "variance": 0.2498918327
          },
          {
            "average": 588.6374642,
            "count": 6490885,
            "maximum": 754,
            "minimum": 558,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 68.41903103,
            "variance": 4681.163806
          },
          {
            "average": 220745008.7,
            "count": 6490885,
            "maximum": 222304968,
            "minimum": 220476515.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 646534.152,
            "variance": 418006409700.0
          },
          {
            "average": 0.5104022025,
            "count": 6490885,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499891821,
            "variance": 0.2498918327
          },
          {
            "average": 0,
            "count": 6490885,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6490885,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6490885,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1348836099,
            "count": 6490885,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3415992383,
            "variance": 0.1166900396
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225390.0338,
          2303437.649,
          0.9178989097,
          -224885.0338,
          2303938.769,
          10.73789891
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225390.03383786342,
                2303437.6489654104,
                0.917898909700428
              ],
              [
                -225390.03383786342,
                2303938.7689654105,
                0.917898909700428
              ],
              [
                -224885.03383786342,
                2303938.7689654105,
                10.737898909700428
              ],
              [
                -224885.03383786342,
                2303437.6489654104,
                10.737898909700428
              ],
              [
                -225390.03383786342,
                2303437.6489654104,
                0.917898909700428
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:28+00:00",
        "end_time": "2018-09-08T21:15:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0751.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0751.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0751.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0751.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9709927,
            70.62526159,
            0.9178989097,
            -159.9564986,
            70.63024189,
            10.73789891
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9698025613745,
                  70.62526159131478,
                  0.917898909700428
                ],
                [
                  -159.97099271448758,
                  70.62982752734077,
                  0.917898909700428
                ],
                [
                  -159.95768608576626,
                  70.63024189063869,
                  10.737898909700428
                ],
                [
                  -159.95649855641824,
                  70.62567586098773,
                  10.737898909700428
                ],
                [
                  -159.9698025613745,
                  70.62526159131478,
                  0.917898909700428
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0751.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0751.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:28Z",
            "pc:count": 6490885,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225139.8649,
                "count": 6490885,
                "maximum": -224885.0338,
                "minimum": -225390.0338,
                "name": "X",
                "position": 0,
                "stddev": 128.5298019,
                "variance": 16519.90998
              },
              {
                "average": 2303726.821,
                "count": 6490885,
                "maximum": 2303938.769,
                "minimum": 2303437.649,
                "name": "Y",
                "position": 1,
                "stddev": 123.437373,
                "variance": 15236.78506
              },
              {
                "average": 6.249927288,
                "count": 6490885,
                "maximum": 10.73789891,
                "minimum": 0.9178989097,
                "name": "Z",
                "position": 2,
                "stddev": 3.350445696,
                "variance": 11.22548636
              },
              {
                "average": 36833.11144,
                "count": 6490885,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 16852.56706,
                "variance": 284009016.7
              },
              {
                "average": 1.000002157,
                "count": 6490885,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001468627397,
                "variance": 2.15686643e-06
              },
              {
                "average": 1.000004314,
                "count": 6490885,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002076950543,
                "variance": 4.313723557e-06
              },
              {
                "average": 0.5062107864,
                "count": 6490885,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999614632,
                "variance": 0.2499614646
              },
              {
                "average": 0.0002241604958,
                "count": 6490885,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01497031337,
                "variance": 0.0002241102824
              },
              {
                "average": 1.561864214,
                "count": 6490885,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.753517676,
                "variance": 3.074824239
              },
              {
                "average": -1.849817426,
                "count": 6490885,
                "maximum": 16.75799942,
                "minimum": -20.80200005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.328477386,
                "variance": 87.02049035
              },
              {
                "average": 0.5104022025,
                "count": 6490885,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499891821,
                "variance": 0.2498918327
              },
              {
                "average": 588.6374642,
                "count": 6490885,
                "maximum": 754,
                "minimum": 558,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 68.41903103,
                "variance": 4681.163806
              },
              {
                "average": 220745008.7,
                "count": 6490885,
                "maximum": 222304968,
                "minimum": 220476515.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 646534.152,
                "variance": 418006409700.0
              },
              {
                "average": 0.5104022025,
                "count": 6490885,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499891821,
                "variance": 0.2498918327
              },
              {
                "average": 0,
                "count": 6490885,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6490885,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6490885,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1348836099,
                "count": 6490885,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3415992383,
                "variance": 0.1166900396
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225390.0338,
              2303437.649,
              0.9178989097,
              -224885.0338,
              2303938.769,
              10.73789891
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225390.03383786342,
                    2303437.6489654104,
                    0.917898909700428
                  ],
                  [
                    -225390.03383786342,
                    2303938.7689654105,
                    0.917898909700428
                  ],
                  [
                    -224885.03383786342,
                    2303938.7689654105,
                    10.737898909700428
                  ],
                  [
                    -224885.03383786342,
                    2303437.6489654104,
                    10.737898909700428
                  ],
                  [
                    -225390.03383786342,
                    2303437.6489654104,
                    0.917898909700428
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:28+00:00",
            "end_time": "2018-09-08T21:15:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0747.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.04419193671333,
              70.62606328291066,
              0.930109444879363
            ],
            [
              -160.04539523803993,
              70.63062239927305,
              0.930109444879363
            ],
            [
              -160.03172957768655,
              70.63105325445045,
              203.53010944487937
            ],
            [
              -160.03052896642257,
              70.62649404087769,
              203.53010944487937
            ],
            [
              -160.04419193671333,
              70.62606328291066,
              0.930109444879363
            ]
          ]
        ]
      },
      "bbox": [
        -160.0453952,
        70.62606328,
        0.9301094449,
        -160.030529,
        70.63105325,
        203.5301094
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:24Z",
        "pc:count": 6479032,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227927.0719,
            "count": 6479032,
            "maximum": -227664.2708,
            "minimum": -228182.9308,
            "name": "X",
            "position": 0,
            "stddev": 139.1104279,
            "variance": 19351.71115
          },
          {
            "average": 2304017.458,
            "count": 6479032,
            "maximum": 2304279.375,
            "minimum": 2303778.955,
            "name": "Y",
            "position": 1,
            "stddev": 127.4638524,
            "variance": 16247.03367
          },
          {
            "average": 12.38865064,
            "count": 6479032,
            "maximum": 203.5301094,
            "minimum": 0.9301094449,
            "name": "Z",
            "position": 2,
            "stddev": 3.624321318,
            "variance": 13.13570501
          },
          {
            "average": 42630.77142,
            "count": 6479032,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 11296.8173,
            "variance": 127618081.1
          },
          {
            "average": 1.000337859,
            "count": 6479032,
            "maximum": 10,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0193594316,
            "variance": 0.0003747875919
          },
          {
            "average": 1.000675718,
            "count": 6479032,
            "maximum": 10,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02804263651,
            "variance": 0.0007863894625
          },
          {
            "average": 0.4977144734,
            "count": 6479032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999948149,
            "variance": 0.249994815
          },
          {
            "average": 0.000245561374,
            "count": 6479032,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01566847508,
            "variance": 0.0002455011115
          },
          {
            "average": 1.265500155,
            "count": 6479032,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7317427753,
            "variance": 0.5354474892
          },
          {
            "average": 1.134843585,
            "count": 6479032,
            "maximum": 16.76399994,
            "minimum": -20.74200058,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.95246437,
            "variance": 119.9564757
          },
          {
            "average": 0.4793759315,
            "count": 6479032,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995745053,
            "variance": 0.2495746863
          },
          {
            "average": 590.1027674,
            "count": 6479032,
            "maximum": 752,
            "minimum": 557,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 70.32077298,
            "variance": 4945.011113
          },
          {
            "average": 220768694.5,
            "count": 6479032,
            "maximum": 222304124.3,
            "minimum": 220476320.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 669345.313,
            "variance": 448023148000.0
          },
          {
            "average": 0.4793759315,
            "count": 6479032,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995745053,
            "variance": 0.2495746863
          },
          {
            "average": 0,
            "count": 6479032,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6479032,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6479032,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2385215878,
            "count": 6479032,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4261796194,
            "variance": 0.181629068
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228182.9308,
          2303778.955,
          0.9301094449,
          -227664.2708,
          2304279.375,
          203.5301094
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228182.93083871537,
                2303778.955147478,
                0.930109444879363
              ],
              [
                -228182.93083871537,
                2304279.3751474777,
                0.930109444879363
              ],
              [
                -227664.2708387154,
                2304279.3751474777,
                203.53010944487937
              ],
              [
                -227664.2708387154,
                2303778.955147478,
                203.53010944487937
              ],
              [
                -228182.93083871537,
                2303778.955147478,
                0.930109444879363
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:24+00:00",
        "end_time": "2018-09-08T21:12:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0747.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0747.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0747.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0747.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0453952,
            70.62606328,
            0.9301094449,
            -160.030529,
            70.63105325,
            203.5301094
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.04419193671333,
                  70.62606328291066,
                  0.930109444879363
                ],
                [
                  -160.04539523803993,
                  70.63062239927305,
                  0.930109444879363
                ],
                [
                  -160.03172957768655,
                  70.63105325445045,
                  203.53010944487937
                ],
                [
                  -160.03052896642257,
                  70.62649404087769,
                  203.53010944487937
                ],
                [
                  -160.04419193671333,
                  70.62606328291066,
                  0.930109444879363
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0747.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0747.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:24Z",
            "pc:count": 6479032,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227927.0719,
                "count": 6479032,
                "maximum": -227664.2708,
                "minimum": -228182.9308,
                "name": "X",
                "position": 0,
                "stddev": 139.1104279,
                "variance": 19351.71115
              },
              {
                "average": 2304017.458,
                "count": 6479032,
                "maximum": 2304279.375,
                "minimum": 2303778.955,
                "name": "Y",
                "position": 1,
                "stddev": 127.4638524,
                "variance": 16247.03367
              },
              {
                "average": 12.38865064,
                "count": 6479032,
                "maximum": 203.5301094,
                "minimum": 0.9301094449,
                "name": "Z",
                "position": 2,
                "stddev": 3.624321318,
                "variance": 13.13570501
              },
              {
                "average": 42630.77142,
                "count": 6479032,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 11296.8173,
                "variance": 127618081.1
              },
              {
                "average": 1.000337859,
                "count": 6479032,
                "maximum": 10,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0193594316,
                "variance": 0.0003747875919
              },
              {
                "average": 1.000675718,
                "count": 6479032,
                "maximum": 10,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02804263651,
                "variance": 0.0007863894625
              },
              {
                "average": 0.4977144734,
                "count": 6479032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999948149,
                "variance": 0.249994815
              },
              {
                "average": 0.000245561374,
                "count": 6479032,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01566847508,
                "variance": 0.0002455011115
              },
              {
                "average": 1.265500155,
                "count": 6479032,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7317427753,
                "variance": 0.5354474892
              },
              {
                "average": 1.134843585,
                "count": 6479032,
                "maximum": 16.76399994,
                "minimum": -20.74200058,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.95246437,
                "variance": 119.9564757
              },
              {
                "average": 0.4793759315,
                "count": 6479032,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995745053,
                "variance": 0.2495746863
              },
              {
                "average": 590.1027674,
                "count": 6479032,
                "maximum": 752,
                "minimum": 557,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 70.32077298,
                "variance": 4945.011113
              },
              {
                "average": 220768694.5,
                "count": 6479032,
                "maximum": 222304124.3,
                "minimum": 220476320.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 669345.313,
                "variance": 448023148000.0
              },
              {
                "average": 0.4793759315,
                "count": 6479032,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995745053,
                "variance": 0.2495746863
              },
              {
                "average": 0,
                "count": 6479032,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6479032,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6479032,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2385215878,
                "count": 6479032,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4261796194,
                "variance": 0.181629068
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228182.9308,
              2303778.955,
              0.9301094449,
              -227664.2708,
              2304279.375,
              203.5301094
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228182.93083871537,
                    2303778.955147478,
                    0.930109444879363
                  ],
                  [
                    -228182.93083871537,
                    2304279.3751474777,
                    0.930109444879363
                  ],
                  [
                    -227664.2708387154,
                    2304279.3751474777,
                    203.53010944487937
                  ],
                  [
                    -227664.2708387154,
                    2303778.955147478,
                    203.53010944487937
                  ],
                  [
                    -228182.93083871537,
                    2303778.955147478,
                    0.930109444879363
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:24+00:00",
            "end_time": "2018-09-08T21:12:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0769.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.05861676529204,
              70.63072702549509,
              1.136524157004109
            ],
            [
              -160.05931945383165,
              70.63338276639932,
              1.136524157004109
            ],
            [
              -160.05601354508966,
              70.63348731748917,
              6.556524157004109
            ],
            [
              -160.05531123566982,
              70.63083156284074,
              6.556524157004109
            ],
            [
              -160.05861676529204,
              70.63072702549509,
              1.136524157004109
            ]
          ]
        ]
      },
      "bbox": [
        -160.0593195,
        70.63072703,
        1.136524157,
        -160.0553112,
        70.63348732,
        6.556524157
      ],
      "properties": {
        "datetime": "2018-09-30T00:48:20Z",
        "pc:count": 358731,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228615.0057,
            "count": 358731,
            "maximum": -228554.0907,
            "minimum": -228679.5507,
            "name": "X",
            "position": 0,
            "stddev": 28.63706949,
            "variance": 820.0817491
          },
          {
            "average": 2304468.928,
            "count": 358731,
            "maximum": 2304627.742,
            "minimum": 2304336.242,
            "name": "Y",
            "position": 1,
            "stddev": 74.43118944,
            "variance": 5540.001961
          },
          {
            "average": 1.576406325,
            "count": 358731,
            "maximum": 6.556524157,
            "minimum": 1.136524157,
            "name": "Z",
            "position": 2,
            "stddev": 0.1288291379,
            "variance": 0.01659694678
          },
          {
            "average": 15779.43631,
            "count": 358731,
            "maximum": 65535,
            "minimum": 1045,
            "name": "Intensity",
            "position": 3,
            "stddev": 13068.38648,
            "variance": 170782725.3
          },
          {
            "average": 1.000013938,
            "count": 358731,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003733345014,
            "variance": 1.3937865e-05
          },
          {
            "average": 1.000027876,
            "count": 358731,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005279710357,
            "variance": 2.787534145e-05
          },
          {
            "average": 0.4959203414,
            "count": 358731,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499984053,
            "variance": 0.2499840532
          },
          {
            "average": 0.0005547332124,
            "count": 358731,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02354627421,
            "variance": 0.0005544270289
          },
          {
            "average": 5.570346583,
            "count": 358731,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.646175185,
            "variance": 13.29459348
          },
          {
            "average": 2.690561044,
            "count": 358731,
            "maximum": 21.29400063,
            "minimum": -15.90600014,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.293763028,
            "variance": 53.19897911
          },
          {
            "average": 0.4964918003,
            "count": 358731,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999883893,
            "variance": 0.2499883894
          },
          {
            "average": 597.8716754,
            "count": 358731,
            "maximum": 751,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 78.95382603,
            "variance": 6233.706645
          },
          {
            "average": 220863805,
            "count": 358731,
            "maximum": 222303700.1,
            "minimum": 220476176.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 746845.4286,
            "variance": 557778094200.0
          },
          {
            "average": 0.4964918003,
            "count": 358731,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999883893,
            "variance": 0.2499883894
          },
          {
            "average": 0,
            "count": 358731,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 358731,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 358731,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.05725460024,
            "count": 358731,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2323287788,
            "variance": 0.05397666146
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228679.5507,
          2304336.242,
          1.136524157,
          -228554.0907,
          2304627.742,
          6.556524157
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228679.55065845427,
                2304336.241548836,
                1.136524157004109
              ],
              [
                -228679.55065845427,
                2304627.741548836,
                1.136524157004109
              ],
              [
                -228554.09065845425,
                2304627.741548836,
                6.556524157004109
              ],
              [
                -228554.09065845425,
                2304336.241548836,
                6.556524157004109
              ],
              [
                -228679.55065845427,
                2304336.241548836,
                1.136524157004109
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:48:20+00:00",
        "end_time": "2018-09-08T21:09:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0769.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0769.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0769.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0769.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0593195,
            70.63072703,
            1.136524157,
            -160.0553112,
            70.63348732,
            6.556524157
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.05861676529204,
                  70.63072702549509,
                  1.136524157004109
                ],
                [
                  -160.05931945383165,
                  70.63338276639932,
                  1.136524157004109
                ],
                [
                  -160.05601354508966,
                  70.63348731748917,
                  6.556524157004109
                ],
                [
                  -160.05531123566982,
                  70.63083156284074,
                  6.556524157004109
                ],
                [
                  -160.05861676529204,
                  70.63072702549509,
                  1.136524157004109
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0769.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0769.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:48:20Z",
            "pc:count": 358731,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228615.0057,
                "count": 358731,
                "maximum": -228554.0907,
                "minimum": -228679.5507,
                "name": "X",
                "position": 0,
                "stddev": 28.63706949,
                "variance": 820.0817491
              },
              {
                "average": 2304468.928,
                "count": 358731,
                "maximum": 2304627.742,
                "minimum": 2304336.242,
                "name": "Y",
                "position": 1,
                "stddev": 74.43118944,
                "variance": 5540.001961
              },
              {
                "average": 1.576406325,
                "count": 358731,
                "maximum": 6.556524157,
                "minimum": 1.136524157,
                "name": "Z",
                "position": 2,
                "stddev": 0.1288291379,
                "variance": 0.01659694678
              },
              {
                "average": 15779.43631,
                "count": 358731,
                "maximum": 65535,
                "minimum": 1045,
                "name": "Intensity",
                "position": 3,
                "stddev": 13068.38648,
                "variance": 170782725.3
              },
              {
                "average": 1.000013938,
                "count": 358731,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003733345014,
                "variance": 1.3937865e-05
              },
              {
                "average": 1.000027876,
                "count": 358731,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005279710357,
                "variance": 2.787534145e-05
              },
              {
                "average": 0.4959203414,
                "count": 358731,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499984053,
                "variance": 0.2499840532
              },
              {
                "average": 0.0005547332124,
                "count": 358731,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02354627421,
                "variance": 0.0005544270289
              },
              {
                "average": 5.570346583,
                "count": 358731,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.646175185,
                "variance": 13.29459348
              },
              {
                "average": 2.690561044,
                "count": 358731,
                "maximum": 21.29400063,
                "minimum": -15.90600014,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.293763028,
                "variance": 53.19897911
              },
              {
                "average": 0.4964918003,
                "count": 358731,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999883893,
                "variance": 0.2499883894
              },
              {
                "average": 597.8716754,
                "count": 358731,
                "maximum": 751,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 78.95382603,
                "variance": 6233.706645
              },
              {
                "average": 220863805,
                "count": 358731,
                "maximum": 222303700.1,
                "minimum": 220476176.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 746845.4286,
                "variance": 557778094200.0
              },
              {
                "average": 0.4964918003,
                "count": 358731,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999883893,
                "variance": 0.2499883894
              },
              {
                "average": 0,
                "count": 358731,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 358731,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 358731,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.05725460024,
                "count": 358731,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2323287788,
                "variance": 0.05397666146
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228679.5507,
              2304336.242,
              1.136524157,
              -228554.0907,
              2304627.742,
              6.556524157
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228679.55065845427,
                    2304336.241548836,
                    1.136524157004109
                  ],
                  [
                    -228679.55065845427,
                    2304627.741548836,
                    1.136524157004109
                  ],
                  [
                    -228554.09065845425,
                    2304627.741548836,
                    6.556524157004109
                  ],
                  [
                    -228554.09065845425,
                    2304336.241548836,
                    6.556524157004109
                  ],
                  [
                    -228679.55065845427,
                    2304336.241548836,
                    1.136524157004109
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:48:20+00:00",
            "end_time": "2018-09-08T21:09:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0820.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.04388033722927,
              70.6388385620953,
              1.266068893025893
            ],
            [
              -160.0439739056116,
              70.63919298660352,
              1.266068893025893
            ],
            [
              -160.0431041101569,
              70.63922042387595,
              2.066068893025893
            ],
            [
              -160.04301055509112,
              70.63886599888613,
              2.066068893025893
            ],
            [
              -160.04388033722927,
              70.6388385620953,
              1.266068893025893
            ]
          ]
        ]
      },
      "bbox": [
        -160.0439739,
        70.63883856,
        1.266068893,
        -160.0430106,
        70.63922042,
        2.066068893
      ],
      "properties": {
        "datetime": "2018-09-30T00:40:51Z",
        "pc:count": 8709,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -228023.6141,
            "count": 8709,
            "maximum": -228011.292,
            "minimum": -228044.292,
            "name": "X",
            "position": 0,
            "stddev": 7.334183116,
            "variance": 53.79024198
          },
          {
            "average": 2305182.851,
            "count": 8709,
            "maximum": 2305207.414,
            "minimum": 2305168.514,
            "name": "Y",
            "position": 1,
            "stddev": 8.896401306,
            "variance": 79.1459562
          },
          {
            "average": 1.533034101,
            "count": 8709,
            "maximum": 2.066068893,
            "minimum": 1.266068893,
            "name": "Z",
            "position": 2,
            "stddev": 0.114939765,
            "variance": 0.01321114957
          },
          {
            "average": 14442.89126,
            "count": 8709,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 10492.35706,
            "variance": 110089556.7
          },
          {
            "average": 1,
            "count": 8709,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 8709,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4853599724,
            "count": 8709,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998143197,
            "variance": 0.2498143542
          },
          {
            "average": 0.0004592949822,
            "count": 8709,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02142747652,
            "variance": 0.0004591367501
          },
          {
            "average": 6.23573315,
            "count": 8709,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.537077054,
            "variance": 12.51091408
          },
          {
            "average": 5.514811571,
            "count": 8709,
            "maximum": 10.15799999,
            "minimum": -15.77999973,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 3.438392073,
            "variance": 11.82254005
          },
          {
            "average": 0.4804225514,
            "count": 8709,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996452629,
            "variance": 0.2496453887
          },
          {
            "average": 594.7866575,
            "count": 8709,
            "maximum": 750,
            "minimum": 553,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 79.17466693,
            "variance": 6268.627884
          },
          {
            "average": 220853121.8,
            "count": 8709,
            "maximum": 222303251.8,
            "minimum": 220475550.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 739700.9809,
            "variance": 547157541100.0
          },
          {
            "average": 0.4804225514,
            "count": 8709,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996452629,
            "variance": 0.2496453887
          },
          {
            "average": 0,
            "count": 8709,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8709,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 8709,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01779768056,
            "count": 8709,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1322230335,
            "variance": 0.01748293058
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228044.292,
          2305168.514,
          1.266068893,
          -228011.292,
          2305207.414,
          2.066068893
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228044.29196858458,
                2305168.5135385892,
                1.266068893025893
              ],
              [
                -228044.29196858458,
                2305207.4135385896,
                1.266068893025893
              ],
              [
                -228011.29196858458,
                2305207.4135385896,
                2.066068893025893
              ],
              [
                -228011.29196858458,
                2305168.5135385892,
                2.066068893025893
              ],
              [
                -228044.29196858458,
                2305168.5135385892,
                1.266068893025893
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:40:51+00:00",
        "end_time": "2018-09-08T20:59:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0820.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0820.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0820.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0820.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0439739,
            70.63883856,
            1.266068893,
            -160.0430106,
            70.63922042,
            2.066068893
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.04388033722927,
                  70.6388385620953,
                  1.266068893025893
                ],
                [
                  -160.0439739056116,
                  70.63919298660352,
                  1.266068893025893
                ],
                [
                  -160.0431041101569,
                  70.63922042387595,
                  2.066068893025893
                ],
                [
                  -160.04301055509112,
                  70.63886599888613,
                  2.066068893025893
                ],
                [
                  -160.04388033722927,
                  70.6388385620953,
                  1.266068893025893
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0820.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0820.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:40:51Z",
            "pc:count": 8709,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -228023.6141,
                "count": 8709,
                "maximum": -228011.292,
                "minimum": -228044.292,
                "name": "X",
                "position": 0,
                "stddev": 7.334183116,
                "variance": 53.79024198
              },
              {
                "average": 2305182.851,
                "count": 8709,
                "maximum": 2305207.414,
                "minimum": 2305168.514,
                "name": "Y",
                "position": 1,
                "stddev": 8.896401306,
                "variance": 79.1459562
              },
              {
                "average": 1.533034101,
                "count": 8709,
                "maximum": 2.066068893,
                "minimum": 1.266068893,
                "name": "Z",
                "position": 2,
                "stddev": 0.114939765,
                "variance": 0.01321114957
              },
              {
                "average": 14442.89126,
                "count": 8709,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 10492.35706,
                "variance": 110089556.7
              },
              {
                "average": 1,
                "count": 8709,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 8709,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4853599724,
                "count": 8709,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998143197,
                "variance": 0.2498143542
              },
              {
                "average": 0.0004592949822,
                "count": 8709,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02142747652,
                "variance": 0.0004591367501
              },
              {
                "average": 6.23573315,
                "count": 8709,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.537077054,
                "variance": 12.51091408
              },
              {
                "average": 5.514811571,
                "count": 8709,
                "maximum": 10.15799999,
                "minimum": -15.77999973,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 3.438392073,
                "variance": 11.82254005
              },
              {
                "average": 0.4804225514,
                "count": 8709,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996452629,
                "variance": 0.2496453887
              },
              {
                "average": 594.7866575,
                "count": 8709,
                "maximum": 750,
                "minimum": 553,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 79.17466693,
                "variance": 6268.627884
              },
              {
                "average": 220853121.8,
                "count": 8709,
                "maximum": 222303251.8,
                "minimum": 220475550.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 739700.9809,
                "variance": 547157541100.0
              },
              {
                "average": 0.4804225514,
                "count": 8709,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996452629,
                "variance": 0.2496453887
              },
              {
                "average": 0,
                "count": 8709,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8709,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 8709,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01779768056,
                "count": 8709,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1322230335,
                "variance": 0.01748293058
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228044.292,
              2305168.514,
              1.266068893,
              -228011.292,
              2305207.414,
              2.066068893
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228044.29196858458,
                    2305168.5135385892,
                    1.266068893025893
                  ],
                  [
                    -228044.29196858458,
                    2305207.4135385896,
                    1.266068893025893
                  ],
                  [
                    -228011.29196858458,
                    2305207.4135385896,
                    2.066068893025893
                  ],
                  [
                    -228011.29196858458,
                    2305168.5135385892,
                    2.066068893025893
                  ],
                  [
                    -228044.29196858458,
                    2305168.5135385892,
                    1.266068893025893
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:40:51+00:00",
            "end_time": "2018-09-08T20:59:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0873.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9804512915266,
              70.6458650758504,
              12.600855507562907
            ],
            [
              -159.98164463244913,
              70.6504315066357,
              12.600855507562907
            ],
            [
              -159.96796492987903,
              70.65085790826244,
              17.940855507562908
            ],
            [
              -159.96677428858933,
              70.6462913810101,
              17.940855507562908
            ],
            [
              -159.9804512915266,
              70.6458650758504,
              12.600855507562907
            ]
          ]
        ]
      },
      "bbox": [
        -159.9816446,
        70.64586508,
        12.60085551,
        -159.9667743,
        70.65085791,
        17.94085551
      ],
      "properties": {
        "datetime": "2018-09-30T00:54:36Z",
        "pc:count": 6617378,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225349.9737,
            "count": 6617378,
            "maximum": -225069.7644,
            "minimum": -225588.4644,
            "name": "X",
            "position": 0,
            "stddev": 135.55822,
            "variance": 18376.031
          },
          {
            "average": 2305967.927,
            "count": 6617378,
            "maximum": 2306217.848,
            "minimum": 2305716.728,
            "name": "Y",
            "position": 1,
            "stddev": 129.4849696,
            "variance": 16766.35735
          },
          {
            "average": 15.34939547,
            "count": 6617378,
            "maximum": 17.94085551,
            "minimum": 12.60085551,
            "name": "Z",
            "position": 2,
            "stddev": 1.050950093,
            "variance": 1.104496098
          },
          {
            "average": 43798.45145,
            "count": 6617378,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 12330.79717,
            "variance": 152048558.8
          },
          {
            "average": 1,
            "count": 6617378,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 6617378,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5034477402,
            "count": 6617378,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999881507,
            "variance": 0.2499881509
          },
          {
            "average": 0.0002701976523,
            "count": 6617378,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01643547037,
            "variance": 0.0002701246864
          },
          {
            "average": 1.187337492,
            "count": 6617378,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3907724235,
            "variance": 0.152703087
          },
          {
            "average": -0.3515123998,
            "count": 6617378,
            "maximum": 16.62599945,
            "minimum": -20.75399971,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.69401935,
            "variance": 136.7500886
          },
          {
            "average": 0.5161557946,
            "count": 6617378,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997389599,
            "variance": 0.249739028
          },
          {
            "average": 589.611194,
            "count": 6617378,
            "maximum": 752,
            "minimum": 550,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 76.73750677,
            "variance": 5888.644946
          },
          {
            "average": 220810056.3,
            "count": 6617378,
            "maximum": 222304076.7,
            "minimum": 220475018.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 706761.8569,
            "variance": 499512322300.0
          },
          {
            "average": 0.5161557946,
            "count": 6617378,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997389599,
            "variance": 0.249739028
          },
          {
            "average": 0,
            "count": 6617378,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6617378,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6617378,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2659408303,
            "count": 6617378,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4418329261,
            "variance": 0.1952163346
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225588.4644,
          2305716.728,
          12.60085551,
          -225069.7644,
          2306217.848,
          17.94085551
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225588.46444344518,
                2305716.72786037,
                12.600855507562907
              ],
              [
                -225588.46444344518,
                2306217.8478603703,
                12.600855507562907
              ],
              [
                -225069.76444344516,
                2306217.8478603703,
                17.940855507562908
              ],
              [
                -225069.76444344516,
                2305716.72786037,
                17.940855507562908
              ],
              [
                -225588.46444344518,
                2305716.72786037,
                12.600855507562907
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:54:36+00:00",
        "end_time": "2018-09-08T20:50:18+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0873.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0873.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0873.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0873.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9816446,
            70.64586508,
            12.60085551,
            -159.9667743,
            70.65085791,
            17.94085551
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9804512915266,
                  70.6458650758504,
                  12.600855507562907
                ],
                [
                  -159.98164463244913,
                  70.6504315066357,
                  12.600855507562907
                ],
                [
                  -159.96796492987903,
                  70.65085790826244,
                  17.940855507562908
                ],
                [
                  -159.96677428858933,
                  70.6462913810101,
                  17.940855507562908
                ],
                [
                  -159.9804512915266,
                  70.6458650758504,
                  12.600855507562907
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0873.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0873.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:54:36Z",
            "pc:count": 6617378,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225349.9737,
                "count": 6617378,
                "maximum": -225069.7644,
                "minimum": -225588.4644,
                "name": "X",
                "position": 0,
                "stddev": 135.55822,
                "variance": 18376.031
              },
              {
                "average": 2305967.927,
                "count": 6617378,
                "maximum": 2306217.848,
                "minimum": 2305716.728,
                "name": "Y",
                "position": 1,
                "stddev": 129.4849696,
                "variance": 16766.35735
              },
              {
                "average": 15.34939547,
                "count": 6617378,
                "maximum": 17.94085551,
                "minimum": 12.60085551,
                "name": "Z",
                "position": 2,
                "stddev": 1.050950093,
                "variance": 1.104496098
              },
              {
                "average": 43798.45145,
                "count": 6617378,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 12330.79717,
                "variance": 152048558.8
              },
              {
                "average": 1,
                "count": 6617378,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 6617378,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5034477402,
                "count": 6617378,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999881507,
                "variance": 0.2499881509
              },
              {
                "average": 0.0002701976523,
                "count": 6617378,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01643547037,
                "variance": 0.0002701246864
              },
              {
                "average": 1.187337492,
                "count": 6617378,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3907724235,
                "variance": 0.152703087
              },
              {
                "average": -0.3515123998,
                "count": 6617378,
                "maximum": 16.62599945,
                "minimum": -20.75399971,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.69401935,
                "variance": 136.7500886
              },
              {
                "average": 0.5161557946,
                "count": 6617378,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997389599,
                "variance": 0.249739028
              },
              {
                "average": 589.611194,
                "count": 6617378,
                "maximum": 752,
                "minimum": 550,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 76.73750677,
                "variance": 5888.644946
              },
              {
                "average": 220810056.3,
                "count": 6617378,
                "maximum": 222304076.7,
                "minimum": 220475018.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 706761.8569,
                "variance": 499512322300.0
              },
              {
                "average": 0.5161557946,
                "count": 6617378,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997389599,
                "variance": 0.249739028
              },
              {
                "average": 0,
                "count": 6617378,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6617378,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6617378,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2659408303,
                "count": 6617378,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4418329261,
                "variance": 0.1952163346
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225588.4644,
              2305716.728,
              12.60085551,
              -225069.7644,
              2306217.848,
              17.94085551
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225588.46444344518,
                    2305716.72786037,
                    12.600855507562907
                  ],
                  [
                    -225588.46444344518,
                    2306217.8478603703,
                    12.600855507562907
                  ],
                  [
                    -225069.76444344516,
                    2306217.8478603703,
                    17.940855507562908
                  ],
                  [
                    -225069.76444344516,
                    2305716.72786037,
                    17.940855507562908
                  ],
                  [
                    -225588.46444344518,
                    2305716.72786037,
                    12.600855507562907
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:54:36+00:00",
            "end_time": "2018-09-08T20:50:18+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0771.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.043789663195,
              70.63015319585891,
              -6.701813118498325
            ],
            [
              -160.04499483082833,
              70.63471898560458,
              -6.701813118498325
            ],
            [
              -160.03132883296286,
              70.63514975633655,
              27.138186881501678
            ],
            [
              -160.0301263598135,
              70.63058386923495,
              27.138186881501678
            ],
            [
              -160.043789663195,
              70.63015319585891,
              -6.701813118498325
            ]
          ]
        ]
      },
      "bbox": [
        -160.0449948,
        70.6301532,
        -6.701813118,
        -160.0301264,
        70.63514976,
        27.13818688
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:15Z",
        "pc:count": 5385605,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227875.7622,
            "count": 5385605,
            "maximum": -227608.577,
            "minimum": -228127.157,
            "name": "X",
            "position": 0,
            "stddev": 135.2066155,
            "variance": 18280.82889
          },
          {
            "average": 2304482.786,
            "count": 5385605,
            "maximum": 2304723.924,
            "minimum": 2304222.784,
            "name": "Y",
            "position": 1,
            "stddev": 129.4909576,
            "variance": 16767.9081
          },
          {
            "average": 10.44653559,
            "count": 5385605,
            "maximum": 27.13818688,
            "minimum": -6.701813118,
            "name": "Z",
            "position": 2,
            "stddev": 3.244056421,
            "variance": 10.52390206
          },
          {
            "average": 42418.15463,
            "count": 5385605,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11406.82638,
            "variance": 130115688
          },
          {
            "average": 1.008791584,
            "count": 5385605,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.0953888005,
            "variance": 0.009099023261
          },
          {
            "average": 1.017571099,
            "count": 5385605,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1357075791,
            "variance": 0.01841654702
          },
          {
            "average": 0.4975758527,
            "count": 5385605,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999941699,
            "variance": 0.2499941699
          },
          {
            "average": 0.0002540104594,
            "count": 5385605,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01593568277,
            "variance": 0.0002539459852
          },
          {
            "average": 1.392563695,
            "count": 5385605,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8806529981,
            "variance": 0.7755497031
          },
          {
            "average": 2.189252536,
            "count": 5385605,
            "maximum": 21.38999939,
            "minimum": -20.70599937,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.48312453,
            "variance": 109.8959
          },
          {
            "average": 0.5109117731,
            "count": 5385605,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998809654,
            "variance": 0.2498809796
          },
          {
            "average": 594.2090194,
            "count": 5385605,
            "maximum": 752,
            "minimum": 555,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 76.49476897,
            "variance": 5851.449679
          },
          {
            "average": 220828671.3,
            "count": 5385605,
            "maximum": 222304115.6,
            "minimum": 220475940.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 720898.3496,
            "variance": 519694430400.0
          },
          {
            "average": 0.5109117731,
            "count": 5385605,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998809654,
            "variance": 0.2498809796
          },
          {
            "average": 0,
            "count": 5385605,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5385605,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 5385605,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2500400605,
            "count": 5385605,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4330358686,
            "variance": 0.1875200635
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -228127.157,
          2304222.784,
          -6.701813118,
          -227608.577,
          2304723.924,
          27.13818688
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -228127.1569554637,
                2304222.7843651674,
                -6.701813118498325
              ],
              [
                -228127.1569554637,
                2304723.924365167,
                -6.701813118498325
              ],
              [
                -227608.57695546368,
                2304723.924365167,
                27.138186881501678
              ],
              [
                -227608.57695546368,
                2304222.7843651674,
                27.138186881501678
              ],
              [
                -228127.1569554637,
                2304222.7843651674,
                -6.701813118498325
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:15+00:00",
        "end_time": "2018-09-08T21:05:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0771.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0771.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0771.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0771.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0449948,
            70.6301532,
            -6.701813118,
            -160.0301264,
            70.63514976,
            27.13818688
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.043789663195,
                  70.63015319585891,
                  -6.701813118498325
                ],
                [
                  -160.04499483082833,
                  70.63471898560458,
                  -6.701813118498325
                ],
                [
                  -160.03132883296286,
                  70.63514975633655,
                  27.138186881501678
                ],
                [
                  -160.0301263598135,
                  70.63058386923495,
                  27.138186881501678
                ],
                [
                  -160.043789663195,
                  70.63015319585891,
                  -6.701813118498325
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0771.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0771.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:15Z",
            "pc:count": 5385605,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227875.7622,
                "count": 5385605,
                "maximum": -227608.577,
                "minimum": -228127.157,
                "name": "X",
                "position": 0,
                "stddev": 135.2066155,
                "variance": 18280.82889
              },
              {
                "average": 2304482.786,
                "count": 5385605,
                "maximum": 2304723.924,
                "minimum": 2304222.784,
                "name": "Y",
                "position": 1,
                "stddev": 129.4909576,
                "variance": 16767.9081
              },
              {
                "average": 10.44653559,
                "count": 5385605,
                "maximum": 27.13818688,
                "minimum": -6.701813118,
                "name": "Z",
                "position": 2,
                "stddev": 3.244056421,
                "variance": 10.52390206
              },
              {
                "average": 42418.15463,
                "count": 5385605,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11406.82638,
                "variance": 130115688
              },
              {
                "average": 1.008791584,
                "count": 5385605,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.0953888005,
                "variance": 0.009099023261
              },
              {
                "average": 1.017571099,
                "count": 5385605,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1357075791,
                "variance": 0.01841654702
              },
              {
                "average": 0.4975758527,
                "count": 5385605,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999941699,
                "variance": 0.2499941699
              },
              {
                "average": 0.0002540104594,
                "count": 5385605,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01593568277,
                "variance": 0.0002539459852
              },
              {
                "average": 1.392563695,
                "count": 5385605,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8806529981,
                "variance": 0.7755497031
              },
              {
                "average": 2.189252536,
                "count": 5385605,
                "maximum": 21.38999939,
                "minimum": -20.70599937,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.48312453,
                "variance": 109.8959
              },
              {
                "average": 0.5109117731,
                "count": 5385605,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998809654,
                "variance": 0.2498809796
              },
              {
                "average": 594.2090194,
                "count": 5385605,
                "maximum": 752,
                "minimum": 555,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 76.49476897,
                "variance": 5851.449679
              },
              {
                "average": 220828671.3,
                "count": 5385605,
                "maximum": 222304115.6,
                "minimum": 220475940.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 720898.3496,
                "variance": 519694430400.0
              },
              {
                "average": 0.5109117731,
                "count": 5385605,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998809654,
                "variance": 0.2498809796
              },
              {
                "average": 0,
                "count": 5385605,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5385605,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 5385605,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2500400605,
                "count": 5385605,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4330358686,
                "variance": 0.1875200635
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -228127.157,
              2304222.784,
              -6.701813118,
              -227608.577,
              2304723.924,
              27.13818688
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -228127.1569554637,
                    2304222.7843651674,
                    -6.701813118498325
                  ],
                  [
                    -228127.1569554637,
                    2304723.924365167,
                    -6.701813118498325
                  ],
                  [
                    -227608.57695546368,
                    2304723.924365167,
                    27.138186881501678
                  ],
                  [
                    -227608.57695546368,
                    2304222.7843651674,
                    27.138186881501678
                  ],
                  [
                    -228127.1569554637,
                    2304222.7843651674,
                    -6.701813118498325
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:15+00:00",
            "end_time": "2018-09-08T21:05:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0775.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9942344645128,
              70.62963423252887,
              0.898365001894061
            ],
            [
              -159.99542726947269,
              70.63419084189567,
              0.898365001894061
            ],
            [
              -159.98195568334688,
              70.63461199485869,
              9.73836500189406
            ],
            [
              -159.98076552951034,
              70.63005529050382,
              9.73836500189406
            ],
            [
              -159.9942344645128,
              70.62963423252887,
              0.898365001894061
            ]
          ]
        ]
      },
      "bbox": [
        -159.9954273,
        70.62963423,
        0.8983650019,
        -159.9807655,
        70.63461199,
        9.738365002
      ],
      "properties": {
        "datetime": "2018-09-30T01:03:02Z",
        "pc:count": 3302214,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226033.6079,
            "count": 3302214,
            "maximum": -225755.6971,
            "minimum": -226266.8771,
            "name": "X",
            "position": 0,
            "stddev": 157.3310947,
            "variance": 24753.07336
          },
          {
            "average": 2304302.439,
            "count": 3302214,
            "maximum": 2304496.859,
            "minimum": 2303996.759,
            "name": "Y",
            "position": 1,
            "stddev": 118.1081475,
            "variance": 13949.5345
          },
          {
            "average": 3.815565126,
            "count": 3302214,
            "maximum": 9.738365002,
            "minimum": 0.8983650019,
            "name": "Z",
            "position": 2,
            "stddev": 2.680490321,
            "variance": 7.185028361
          },
          {
            "average": 31594.9245,
            "count": 3302214,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 19421.03382,
            "variance": 377176554.6
          },
          {
            "average": 1,
            "count": 3302214,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3302214,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5024126238,
            "count": 3302214,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999942549,
            "variance": 0.249994255
          },
          {
            "average": 0.0002701218031,
            "count": 3302214,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01643316522,
            "variance": 0.0002700489191
          },
          {
            "average": 2.049604901,
            "count": 3302214,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.612249886,
            "variance": 6.823849467
          },
          {
            "average": 0.6214813174,
            "count": 3302214,
            "maximum": 21.41399956,
            "minimum": -15.86400032,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.30535243,
            "variance": 106.2002886
          },
          {
            "average": 0.5064901911,
            "count": 3302214,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999579513,
            "variance": 0.2499579531
          },
          {
            "average": 587.390515,
            "count": 3302214,
            "maximum": 753,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 67.79292171,
            "variance": 4595.880234
          },
          {
            "average": 220739822.1,
            "count": 3302214,
            "maximum": 222304582,
            "minimum": 220476129.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 641346.579,
            "variance": 411325434400.0
          },
          {
            "average": 0.5064901911,
            "count": 3302214,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999579513,
            "variance": 0.2499579531
          },
          {
            "average": 0,
            "count": 3302214,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3302214,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3302214,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1638961012,
            "count": 3302214,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3701813214,
            "variance": 0.1370342107
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -226266.8771,
          2303996.759,
          0.8983650019,
          -225755.6971,
          2304496.859,
          9.738365002
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -226266.87710829222,
                2303996.758872864,
                0.898365001894061
              ],
              [
                -226266.87710829222,
                2304496.8588728635,
                0.898365001894061
              ],
              [
                -225755.69710829222,
                2304496.8588728635,
                9.73836500189406
              ],
              [
                -225755.69710829222,
                2303996.758872864,
                9.73836500189406
              ],
              [
                -226266.87710829222,
                2303996.758872864,
                0.898365001894061
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:03:02+00:00",
        "end_time": "2018-09-08T21:08:49+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0775.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0775.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0775.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0775.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9954273,
            70.62963423,
            0.8983650019,
            -159.9807655,
            70.63461199,
            9.738365002
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9942344645128,
                  70.62963423252887,
                  0.898365001894061
                ],
                [
                  -159.99542726947269,
                  70.63419084189567,
                  0.898365001894061
                ],
                [
                  -159.98195568334688,
                  70.63461199485869,
                  9.73836500189406
                ],
                [
                  -159.98076552951034,
                  70.63005529050382,
                  9.73836500189406
                ],
                [
                  -159.9942344645128,
                  70.62963423252887,
                  0.898365001894061
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0775.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0775.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:03:02Z",
            "pc:count": 3302214,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226033.6079,
                "count": 3302214,
                "maximum": -225755.6971,
                "minimum": -226266.8771,
                "name": "X",
                "position": 0,
                "stddev": 157.3310947,
                "variance": 24753.07336
              },
              {
                "average": 2304302.439,
                "count": 3302214,
                "maximum": 2304496.859,
                "minimum": 2303996.759,
                "name": "Y",
                "position": 1,
                "stddev": 118.1081475,
                "variance": 13949.5345
              },
              {
                "average": 3.815565126,
                "count": 3302214,
                "maximum": 9.738365002,
                "minimum": 0.8983650019,
                "name": "Z",
                "position": 2,
                "stddev": 2.680490321,
                "variance": 7.185028361
              },
              {
                "average": 31594.9245,
                "count": 3302214,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 19421.03382,
                "variance": 377176554.6
              },
              {
                "average": 1,
                "count": 3302214,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3302214,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5024126238,
                "count": 3302214,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999942549,
                "variance": 0.249994255
              },
              {
                "average": 0.0002701218031,
                "count": 3302214,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01643316522,
                "variance": 0.0002700489191
              },
              {
                "average": 2.049604901,
                "count": 3302214,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.612249886,
                "variance": 6.823849467
              },
              {
                "average": 0.6214813174,
                "count": 3302214,
                "maximum": 21.41399956,
                "minimum": -15.86400032,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.30535243,
                "variance": 106.2002886
              },
              {
                "average": 0.5064901911,
                "count": 3302214,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999579513,
                "variance": 0.2499579531
              },
              {
                "average": 587.390515,
                "count": 3302214,
                "maximum": 753,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 67.79292171,
                "variance": 4595.880234
              },
              {
                "average": 220739822.1,
                "count": 3302214,
                "maximum": 222304582,
                "minimum": 220476129.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 641346.579,
                "variance": 411325434400.0
              },
              {
                "average": 0.5064901911,
                "count": 3302214,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999579513,
                "variance": 0.2499579531
              },
              {
                "average": 0,
                "count": 3302214,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3302214,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3302214,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1638961012,
                "count": 3302214,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3701813214,
                "variance": 0.1370342107
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -226266.8771,
              2303996.759,
              0.8983650019,
              -225755.6971,
              2304496.859,
              9.738365002
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -226266.87710829222,
                    2303996.758872864,
                    0.898365001894061
                  ],
                  [
                    -226266.87710829222,
                    2304496.8588728635,
                    0.898365001894061
                  ],
                  [
                    -225755.69710829222,
                    2304496.8588728635,
                    9.73836500189406
                  ],
                  [
                    -225755.69710829222,
                    2303996.758872864,
                    9.73836500189406
                  ],
                  [
                    -226266.87710829222,
                    2303996.758872864,
                    0.898365001894061
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:03:02+00:00",
            "end_time": "2018-09-08T21:08:49+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0748.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.0319827416152,
              70.62649367731768,
              0.825570004800822
            ],
            [
              -160.03303559705566,
              70.63049092408677,
              0.825570004800822
            ],
            [
              -160.01938822770663,
              70.63092031982337,
              15.105570004800823
            ],
            [
              -160.01833772776854,
              70.626922988111,
              15.105570004800823
            ],
            [
              -160.0319827416152,
              70.62649367731768,
              0.825570004800822
            ]
          ]
        ]
      },
      "bbox": [
        -160.0330356,
        70.62649368,
        0.8255700048,
        -160.0183377,
        70.63092032,
        15.10557
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:21Z",
        "pc:count": 2528470,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227548.5028,
            "count": 2528470,
            "maximum": -227201.0463,
            "minimum": -227719.0063,
            "name": "X",
            "position": 0,
            "stddev": 108.3446508,
            "variance": 11738.56335
          },
          {
            "average": 2304069.154,
            "count": 2528470,
            "maximum": 2304222.64,
            "minimum": 2303783.9,
            "name": "Y",
            "position": 1,
            "stddev": 95.32351639,
            "variance": 9086.572776
          },
          {
            "average": 6.677503316,
            "count": 2528470,
            "maximum": 15.10557,
            "minimum": 0.8255700048,
            "name": "Z",
            "position": 2,
            "stddev": 5.756947453,
            "variance": 33.14244398
          },
          {
            "average": 29640.3203,
            "count": 2528470,
            "maximum": 65535,
            "minimum": 836,
            "name": "Intensity",
            "position": 3,
            "stddev": 16991.9031,
            "variance": 288724770.8
          },
          {
            "average": 1.000079495,
            "count": 2528470,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.008915628201,
            "variance": 7.948842622e-05
          },
          {
            "average": 1.000158989,
            "count": 2528470,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01260810111,
            "variance": 0.0001589642136
          },
          {
            "average": 0.4993569234,
            "count": 2528470,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999996853,
            "variance": 0.2499996853
          },
          {
            "average": 0.0002914806187,
            "count": 2528470,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01707031848,
            "variance": 0.000291395773
          },
          {
            "average": 1.723003239,
            "count": 2528470,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.013343782,
            "variance": 4.053553183
          },
          {
            "average": 0.362291373,
            "count": 2528470,
            "maximum": 16.57799911,
            "minimum": -20.70599937,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.28962603,
            "variance": 127.4556558
          },
          {
            "average": 0.4977512092,
            "count": 2528470,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999950418,
            "variance": 0.2499950418
          },
          {
            "average": 593.8570823,
            "count": 2528470,
            "maximum": 752,
            "minimum": 557,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 73.95247146,
            "variance": 5468.968036
          },
          {
            "average": 220805981.9,
            "count": 2528470,
            "maximum": 222304121.1,
            "minimum": 220476326.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 702214.8121,
            "variance": 493105642400.0
          },
          {
            "average": 0.4977512092,
            "count": 2528470,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999950418,
            "variance": 0.2499950418
          },
          {
            "average": 0,
            "count": 2528470,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2528470,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2528470,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.174856336,
            "count": 2528470,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3798442508,
            "variance": 0.1442816549
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227719.0063,
          2303783.9,
          0.8255700048,
          -227201.0463,
          2304222.64,
          15.10557
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227719.0063143933,
                2303783.899868288,
                0.825570004800822
              ],
              [
                -227719.0063143933,
                2304222.6398682883,
                0.825570004800822
              ],
              [
                -227201.0463143933,
                2304222.6398682883,
                15.105570004800823
              ],
              [
                -227201.0463143933,
                2303783.899868288,
                15.105570004800823
              ],
              [
                -227719.0063143933,
                2303783.899868288,
                0.825570004800822
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:21+00:00",
        "end_time": "2018-09-08T21:12:06+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0748.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0748.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0748.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0748.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0330356,
            70.62649368,
            0.8255700048,
            -160.0183377,
            70.63092032,
            15.10557
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.0319827416152,
                  70.62649367731768,
                  0.825570004800822
                ],
                [
                  -160.03303559705566,
                  70.63049092408677,
                  0.825570004800822
                ],
                [
                  -160.01938822770663,
                  70.63092031982337,
                  15.105570004800823
                ],
                [
                  -160.01833772776854,
                  70.626922988111,
                  15.105570004800823
                ],
                [
                  -160.0319827416152,
                  70.62649367731768,
                  0.825570004800822
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0748.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0748.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:21Z",
            "pc:count": 2528470,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227548.5028,
                "count": 2528470,
                "maximum": -227201.0463,
                "minimum": -227719.0063,
                "name": "X",
                "position": 0,
                "stddev": 108.3446508,
                "variance": 11738.56335
              },
              {
                "average": 2304069.154,
                "count": 2528470,
                "maximum": 2304222.64,
                "minimum": 2303783.9,
                "name": "Y",
                "position": 1,
                "stddev": 95.32351639,
                "variance": 9086.572776
              },
              {
                "average": 6.677503316,
                "count": 2528470,
                "maximum": 15.10557,
                "minimum": 0.8255700048,
                "name": "Z",
                "position": 2,
                "stddev": 5.756947453,
                "variance": 33.14244398
              },
              {
                "average": 29640.3203,
                "count": 2528470,
                "maximum": 65535,
                "minimum": 836,
                "name": "Intensity",
                "position": 3,
                "stddev": 16991.9031,
                "variance": 288724770.8
              },
              {
                "average": 1.000079495,
                "count": 2528470,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.008915628201,
                "variance": 7.948842622e-05
              },
              {
                "average": 1.000158989,
                "count": 2528470,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01260810111,
                "variance": 0.0001589642136
              },
              {
                "average": 0.4993569234,
                "count": 2528470,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999996853,
                "variance": 0.2499996853
              },
              {
                "average": 0.0002914806187,
                "count": 2528470,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01707031848,
                "variance": 0.000291395773
              },
              {
                "average": 1.723003239,
                "count": 2528470,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.013343782,
                "variance": 4.053553183
              },
              {
                "average": 0.362291373,
                "count": 2528470,
                "maximum": 16.57799911,
                "minimum": -20.70599937,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.28962603,
                "variance": 127.4556558
              },
              {
                "average": 0.4977512092,
                "count": 2528470,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999950418,
                "variance": 0.2499950418
              },
              {
                "average": 593.8570823,
                "count": 2528470,
                "maximum": 752,
                "minimum": 557,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 73.95247146,
                "variance": 5468.968036
              },
              {
                "average": 220805981.9,
                "count": 2528470,
                "maximum": 222304121.1,
                "minimum": 220476326.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 702214.8121,
                "variance": 493105642400.0
              },
              {
                "average": 0.4977512092,
                "count": 2528470,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999950418,
                "variance": 0.2499950418
              },
              {
                "average": 0,
                "count": 2528470,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2528470,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2528470,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.174856336,
                "count": 2528470,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3798442508,
                "variance": 0.1442816549
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227719.0063,
              2303783.9,
              0.8255700048,
              -227201.0463,
              2304222.64,
              15.10557
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227719.0063143933,
                    2303783.899868288,
                    0.825570004800822
                  ],
                  [
                    -227719.0063143933,
                    2304222.6398682883,
                    0.825570004800822
                  ],
                  [
                    -227201.0463143933,
                    2304222.6398682883,
                    15.105570004800823
                  ],
                  [
                    -227201.0463143933,
                    2303783.899868288,
                    15.105570004800823
                  ],
                  [
                    -227719.0063143933,
                    2303783.899868288,
                    0.825570004800822
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:21+00:00",
            "end_time": "2018-09-08T21:12:06+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0772.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.03145314804254,
              70.63002104106982,
              0.87004662527956
            ],
            [
              -160.03265547148965,
              70.63458544678824,
              0.87004662527956
            ],
            [
              -160.01898932209943,
              70.63501533928454,
              41.91004662527956
            ],
            [
              -160.0177896924285,
              70.63045083643883,
              41.91004662527956
            ],
            [
              -160.03145314804254,
              70.63002104106982,
              0.87004662527956
            ]
          ]
        ]
      },
      "bbox": [
        -160.0326555,
        70.63002104,
        0.8700466253,
        -160.0177897,
        70.63501534,
        41.91004663
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:15Z",
        "pc:count": 6167529,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -227391.3772,
            "count": 6167529,
            "maximum": -227145.5188,
            "minimum": -227664.0988,
            "name": "X",
            "position": 0,
            "stddev": 136.2110485,
            "variance": 18553.44973
          },
          {
            "average": 2304414.097,
            "count": 6167529,
            "maximum": 2304667.045,
            "minimum": 2304166.065,
            "name": "Y",
            "position": 1,
            "stddev": 125.0185312,
            "variance": 15629.63313
          },
          {
            "average": 12.91206417,
            "count": 6167529,
            "maximum": 41.91004663,
            "minimum": 0.8700466253,
            "name": "Z",
            "position": 2,
            "stddev": 3.280799043,
            "variance": 10.76364236
          },
          {
            "average": 43226.96754,
            "count": 6167529,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10999.57342,
            "variance": 120990615.5
          },
          {
            "average": 1.000837288,
            "count": 6167529,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02910265166,
            "variance": 0.0008469643337
          },
          {
            "average": 1.001674577,
            "count": 6167529,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04126625126,
            "variance": 0.001702903493
          },
          {
            "average": 0.5061779199,
            "count": 6167529,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999618724,
            "variance": 0.2499618738
          },
          {
            "average": 0.0002446684888,
            "count": 6167529,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01563997013,
            "variance": 0.0002446086658
          },
          {
            "average": 1.2649022,
            "count": 6167529,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7321115601,
            "variance": 0.5359873364
          },
          {
            "average": -2.0489726,
            "count": 6167529,
            "maximum": 17.06399918,
            "minimum": -20.73600006,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.03864147,
            "variance": 121.8516054
          },
          {
            "average": 0.4966807615,
            "count": 6167529,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999890231,
            "variance": 0.2499890232
          },
          {
            "average": 596.2198123,
            "count": 6167529,
            "maximum": 752,
            "minimum": 555,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 77.87026995,
            "variance": 6063.778942
          },
          {
            "average": 220843795.9,
            "count": 6167529,
            "maximum": 222304115.6,
            "minimum": 220475947.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 732435.8037,
            "variance": 536462206600.0
          },
          {
            "average": 0.4966807615,
            "count": 6167529,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999890231,
            "variance": 0.2499890232
          },
          {
            "average": 0,
            "count": 6167529,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6167529,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6167529,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2437441316,
            "count": 6167529,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4293401446,
            "variance": 0.1843329598
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227664.0988,
          2304166.065,
          0.8700466253,
          -227145.5188,
          2304667.045,
          41.91004663
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227664.0988046984,
                2304166.0646938663,
                0.87004662527956
              ],
              [
                -227664.0988046984,
                2304667.0446938667,
                0.87004662527956
              ],
              [
                -227145.5188046984,
                2304667.0446938667,
                41.91004662527956
              ],
              [
                -227145.5188046984,
                2304166.0646938663,
                41.91004662527956
              ],
              [
                -227664.0988046984,
                2304166.0646938663,
                0.87004662527956
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:15+00:00",
        "end_time": "2018-09-08T21:05:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0772.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0772.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0772.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0772.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0326555,
            70.63002104,
            0.8700466253,
            -160.0177897,
            70.63501534,
            41.91004663
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.03145314804254,
                  70.63002104106982,
                  0.87004662527956
                ],
                [
                  -160.03265547148965,
                  70.63458544678824,
                  0.87004662527956
                ],
                [
                  -160.01898932209943,
                  70.63501533928454,
                  41.91004662527956
                ],
                [
                  -160.0177896924285,
                  70.63045083643883,
                  41.91004662527956
                ],
                [
                  -160.03145314804254,
                  70.63002104106982,
                  0.87004662527956
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0772.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0772.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:15Z",
            "pc:count": 6167529,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -227391.3772,
                "count": 6167529,
                "maximum": -227145.5188,
                "minimum": -227664.0988,
                "name": "X",
                "position": 0,
                "stddev": 136.2110485,
                "variance": 18553.44973
              },
              {
                "average": 2304414.097,
                "count": 6167529,
                "maximum": 2304667.045,
                "minimum": 2304166.065,
                "name": "Y",
                "position": 1,
                "stddev": 125.0185312,
                "variance": 15629.63313
              },
              {
                "average": 12.91206417,
                "count": 6167529,
                "maximum": 41.91004663,
                "minimum": 0.8700466253,
                "name": "Z",
                "position": 2,
                "stddev": 3.280799043,
                "variance": 10.76364236
              },
              {
                "average": 43226.96754,
                "count": 6167529,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10999.57342,
                "variance": 120990615.5
              },
              {
                "average": 1.000837288,
                "count": 6167529,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02910265166,
                "variance": 0.0008469643337
              },
              {
                "average": 1.001674577,
                "count": 6167529,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04126625126,
                "variance": 0.001702903493
              },
              {
                "average": 0.5061779199,
                "count": 6167529,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999618724,
                "variance": 0.2499618738
              },
              {
                "average": 0.0002446684888,
                "count": 6167529,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01563997013,
                "variance": 0.0002446086658
              },
              {
                "average": 1.2649022,
                "count": 6167529,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7321115601,
                "variance": 0.5359873364
              },
              {
                "average": -2.0489726,
                "count": 6167529,
                "maximum": 17.06399918,
                "minimum": -20.73600006,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.03864147,
                "variance": 121.8516054
              },
              {
                "average": 0.4966807615,
                "count": 6167529,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999890231,
                "variance": 0.2499890232
              },
              {
                "average": 596.2198123,
                "count": 6167529,
                "maximum": 752,
                "minimum": 555,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 77.87026995,
                "variance": 6063.778942
              },
              {
                "average": 220843795.9,
                "count": 6167529,
                "maximum": 222304115.6,
                "minimum": 220475947.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 732435.8037,
                "variance": 536462206600.0
              },
              {
                "average": 0.4966807615,
                "count": 6167529,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999890231,
                "variance": 0.2499890232
              },
              {
                "average": 0,
                "count": 6167529,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6167529,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6167529,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2437441316,
                "count": 6167529,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4293401446,
                "variance": 0.1843329598
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227664.0988,
              2304166.065,
              0.8700466253,
              -227145.5188,
              2304667.045,
              41.91004663
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227664.0988046984,
                    2304166.0646938663,
                    0.87004662527956
                  ],
                  [
                    -227664.0988046984,
                    2304667.0446938667,
                    0.87004662527956
                  ],
                  [
                    -227145.5188046984,
                    2304667.0446938667,
                    41.91004662527956
                  ],
                  [
                    -227145.5188046984,
                    2304166.0646938663,
                    41.91004662527956
                  ],
                  [
                    -227664.0988046984,
                    2304166.0646938663,
                    0.87004662527956
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:15+00:00",
            "end_time": "2018-09-08T21:05:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0776.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.98209078238682,
              70.62948305184445,
              0.975547860798749
            ],
            [
              -159.98328350271856,
              70.63404866188111,
              0.975547860798749
            ],
            [
              -159.96961464488797,
              70.63447510596163,
              16.71554786079875
            ],
            [
              -159.96842461989127,
              70.62990939955426,
              16.71554786079875
            ],
            [
              -159.98209078238682,
              70.62948305184445,
              0.975547860798749
            ]
          ]
        ]
      },
      "bbox": [
        -159.9832835,
        70.62948305,
        0.9755478608,
        -159.9684246,
        70.63447511,
        16.71554786
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:25Z",
        "pc:count": 6979883,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225563.7126,
            "count": 6979883,
            "maximum": -225292.5527,
            "minimum": -225811.2127,
            "name": "X",
            "position": 0,
            "stddev": 133.5568209,
            "variance": 17837.42442
          },
          {
            "average": 2304179.737,
            "count": 6979883,
            "maximum": 2304440.048,
            "minimum": 2303938.968,
            "name": "Y",
            "position": 1,
            "stddev": 129.6222704,
            "variance": 16801.933
          },
          {
            "average": 6.991067304,
            "count": 6979883,
            "maximum": 16.71554786,
            "minimum": 0.9755478608,
            "name": "Z",
            "position": 2,
            "stddev": 1.709679147,
            "variance": 2.923002786
          },
          {
            "average": 44671.45833,
            "count": 6979883,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 11468.423,
            "variance": 131524726
          },
          {
            "average": 1.000002579,
            "count": 6979883,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001605874686,
            "variance": 2.578833508e-06
          },
          {
            "average": 1.000005158,
            "count": 6979883,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002271046832,
            "variance": 5.157653714e-06
          },
          {
            "average": 0.4966759471,
            "count": 6979883,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999889864,
            "variance": 0.2499889865
          },
          {
            "average": 0.0002719243288,
            "count": 6979883,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01648788722,
            "variance": 0.0002718504249
          },
          {
            "average": 1.189323088,
            "count": 6979883,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.6494903462,
            "variance": 0.4218377099
          },
          {
            "average": 3.62295347,
            "count": 6979883,
            "maximum": 21.32999992,
            "minimum": -20.71199989,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.46412321,
            "variance": 109.4978746
          },
          {
            "average": 0.5172619656,
            "count": 6979883,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997019715,
            "variance": 0.2497020603
          },
          {
            "average": 583.433975,
            "count": 6979883,
            "maximum": 754,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 64.05936491,
            "variance": 4103.602232
          },
          {
            "average": 220704772.1,
            "count": 6979883,
            "maximum": 222304965,
            "minimum": 220476122.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 603866.7941,
            "variance": 364655105000.0
          },
          {
            "average": 0.5172619656,
            "count": 6979883,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997019715,
            "variance": 0.2497020603
          },
          {
            "average": 0,
            "count": 6979883,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6979883,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6979883,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2941404605,
            "count": 6979883,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4556554397,
            "variance": 0.2076218798
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225811.2127,
          2303938.968,
          0.9755478608,
          -225292.5527,
          2304440.048,
          16.71554786
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225811.21268316562,
                2303938.9681742014,
                0.975547860798749
              ],
              [
                -225811.21268316562,
                2304440.0481742015,
                0.975547860798749
              ],
              [
                -225292.55268316565,
                2304440.0481742015,
                16.71554786079875
              ],
              [
                -225292.55268316565,
                2303938.9681742014,
                16.71554786079875
              ],
              [
                -225811.21268316562,
                2303938.9681742014,
                0.975547860798749
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:25+00:00",
        "end_time": "2018-09-08T21:08:42+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0776.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0776.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0776.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0776.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9832835,
            70.62948305,
            0.9755478608,
            -159.9684246,
            70.63447511,
            16.71554786
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.98209078238682,
                  70.62948305184445,
                  0.975547860798749
                ],
                [
                  -159.98328350271856,
                  70.63404866188111,
                  0.975547860798749
                ],
                [
                  -159.96961464488797,
                  70.63447510596163,
                  16.71554786079875
                ],
                [
                  -159.96842461989127,
                  70.62990939955426,
                  16.71554786079875
                ],
                [
                  -159.98209078238682,
                  70.62948305184445,
                  0.975547860798749
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0776.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0776.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:25Z",
            "pc:count": 6979883,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225563.7126,
                "count": 6979883,
                "maximum": -225292.5527,
                "minimum": -225811.2127,
                "name": "X",
                "position": 0,
                "stddev": 133.5568209,
                "variance": 17837.42442
              },
              {
                "average": 2304179.737,
                "count": 6979883,
                "maximum": 2304440.048,
                "minimum": 2303938.968,
                "name": "Y",
                "position": 1,
                "stddev": 129.6222704,
                "variance": 16801.933
              },
              {
                "average": 6.991067304,
                "count": 6979883,
                "maximum": 16.71554786,
                "minimum": 0.9755478608,
                "name": "Z",
                "position": 2,
                "stddev": 1.709679147,
                "variance": 2.923002786
              },
              {
                "average": 44671.45833,
                "count": 6979883,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 11468.423,
                "variance": 131524726
              },
              {
                "average": 1.000002579,
                "count": 6979883,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001605874686,
                "variance": 2.578833508e-06
              },
              {
                "average": 1.000005158,
                "count": 6979883,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002271046832,
                "variance": 5.157653714e-06
              },
              {
                "average": 0.4966759471,
                "count": 6979883,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999889864,
                "variance": 0.2499889865
              },
              {
                "average": 0.0002719243288,
                "count": 6979883,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01648788722,
                "variance": 0.0002718504249
              },
              {
                "average": 1.189323088,
                "count": 6979883,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.6494903462,
                "variance": 0.4218377099
              },
              {
                "average": 3.62295347,
                "count": 6979883,
                "maximum": 21.32999992,
                "minimum": -20.71199989,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.46412321,
                "variance": 109.4978746
              },
              {
                "average": 0.5172619656,
                "count": 6979883,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997019715,
                "variance": 0.2497020603
              },
              {
                "average": 583.433975,
                "count": 6979883,
                "maximum": 754,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 64.05936491,
                "variance": 4103.602232
              },
              {
                "average": 220704772.1,
                "count": 6979883,
                "maximum": 222304965,
                "minimum": 220476122.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 603866.7941,
                "variance": 364655105000.0
              },
              {
                "average": 0.5172619656,
                "count": 6979883,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997019715,
                "variance": 0.2497020603
              },
              {
                "average": 0,
                "count": 6979883,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6979883,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6979883,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2941404605,
                "count": 6979883,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4556554397,
                "variance": 0.2076218798
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225811.2127,
              2303938.968,
              0.9755478608,
              -225292.5527,
              2304440.048,
              16.71554786
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225811.21268316562,
                    2303938.9681742014,
                    0.975547860798749
                  ],
                  [
                    -225811.21268316562,
                    2304440.0481742015,
                    0.975547860798749
                  ],
                  [
                    -225292.55268316565,
                    2304440.0481742015,
                    16.71554786079875
                  ],
                  [
                    -225292.55268316565,
                    2303938.9681742014,
                    16.71554786079875
                  ],
                  [
                    -225811.21268316562,
                    2303938.9681742014,
                    0.975547860798749
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:25+00:00",
            "end_time": "2018-09-08T21:08:42+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0773.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -160.01924298673072,
              70.6303784720585,
              0.885306110738926
            ],
            [
              -160.02031387666892,
              70.6344522330293,
              0.885306110738926
            ],
            [
              -160.00664441353584,
              70.63488134628018,
              13.305306110738925
            ],
            [
              -160.00557592851055,
              70.63080749877827,
              13.305306110738925
            ],
            [
              -160.01924298673072,
              70.6303784720585,
              0.885306110738926
            ]
          ]
        ]
      },
      "bbox": [
        -160.0203139,
        70.63037847,
        0.8853061107,
        -160.0055759,
        70.63488135,
        13.30530611
      ],
      "properties": {
        "datetime": "2018-09-30T00:55:11Z",
        "pc:count": 4673515,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -226951.4453,
            "count": 4673515,
            "maximum": -226682.24,
            "minimum": -227200.94,
            "name": "X",
            "position": 0,
            "stddev": 139.6634241,
            "variance": 19505.87204
          },
          {
            "average": 2304405.976,
            "count": 4673515,
            "maximum": 2304610.279,
            "minimum": 2304163.159,
            "name": "Y",
            "position": 1,
            "stddev": 104.8079995,
            "variance": 10984.71677
          },
          {
            "average": 7.461026702,
            "count": 4673515,
            "maximum": 13.30530611,
            "minimum": 0.8853061107,
            "name": "Z",
            "position": 2,
            "stddev": 3.178475501,
            "variance": 10.10270651
          },
          {
            "average": 41747.22233,
            "count": 4673515,
            "maximum": 65535,
            "minimum": 1200,
            "name": "Intensity",
            "position": 3,
            "stddev": 14186.94557,
            "variance": 201269424.5
          },
          {
            "average": 1.000004065,
            "count": 4673515,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.002016295327,
            "variance": 4.065446847e-06
          },
          {
            "average": 1.000008131,
            "count": 4673515,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002851466401,
            "variance": 8.130860638e-06
          },
          {
            "average": 0.5077422454,
            "count": 4673515,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999401075,
            "variance": 0.2499401111
          },
          {
            "average": 0.0002747396767,
            "count": 4673515,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01657299772,
            "variance": 0.0002746642535
          },
          {
            "average": 1.584894239,
            "count": 4673515,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.687576662,
            "variance": 2.84791499
          },
          {
            "average": -2.800804978,
            "count": 4673515,
            "maximum": 16.59600067,
            "minimum": -20.72400093,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.6892757,
            "variance": 114.2606151
          },
          {
            "average": 0.496558372,
            "count": 4673515,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999882085,
            "variance": 0.2499882087
          },
          {
            "average": 600.1838507,
            "count": 4673515,
            "maximum": 752,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 80.74864539,
            "variance": 6520.343732
          },
          {
            "average": 220881077.6,
            "count": 4673515,
            "maximum": 222304111.4,
            "minimum": 220476145.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 758844.8843,
            "variance": 575845558400.0
          },
          {
            "average": 0.496558372,
            "count": 4673515,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999882085,
            "variance": 0.2499882087
          },
          {
            "average": 0,
            "count": 4673515,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4673515,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4673515,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2087998006,
            "count": 4673515,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4064510785,
            "variance": 0.1652024792
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -227200.94,
          2304163.159,
          0.8853061107,
          -226682.24,
          2304610.279,
          13.30530611
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -227200.94004346846,
                2304163.1585400645,
                0.885306110738926
              ],
              [
                -227200.94004346846,
                2304610.2785400646,
                0.885306110738926
              ],
              [
                -226682.24004346845,
                2304610.2785400646,
                13.305306110738925
              ],
              [
                -226682.24004346845,
                2304163.1585400645,
                13.305306110738925
              ],
              [
                -227200.94004346846,
                2304163.1585400645,
                0.885306110738926
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T00:55:11+00:00",
        "end_time": "2018-09-08T21:09:05+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0773.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0773.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0773.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0773.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -160.0203139,
            70.63037847,
            0.8853061107,
            -160.0055759,
            70.63488135,
            13.30530611
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -160.01924298673072,
                  70.6303784720585,
                  0.885306110738926
                ],
                [
                  -160.02031387666892,
                  70.6344522330293,
                  0.885306110738926
                ],
                [
                  -160.00664441353584,
                  70.63488134628018,
                  13.305306110738925
                ],
                [
                  -160.00557592851055,
                  70.63080749877827,
                  13.305306110738925
                ],
                [
                  -160.01924298673072,
                  70.6303784720585,
                  0.885306110738926
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0773.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0773.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T00:55:11Z",
            "pc:count": 4673515,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -226951.4453,
                "count": 4673515,
                "maximum": -226682.24,
                "minimum": -227200.94,
                "name": "X",
                "position": 0,
                "stddev": 139.6634241,
                "variance": 19505.87204
              },
              {
                "average": 2304405.976,
                "count": 4673515,
                "maximum": 2304610.279,
                "minimum": 2304163.159,
                "name": "Y",
                "position": 1,
                "stddev": 104.8079995,
                "variance": 10984.71677
              },
              {
                "average": 7.461026702,
                "count": 4673515,
                "maximum": 13.30530611,
                "minimum": 0.8853061107,
                "name": "Z",
                "position": 2,
                "stddev": 3.178475501,
                "variance": 10.10270651
              },
              {
                "average": 41747.22233,
                "count": 4673515,
                "maximum": 65535,
                "minimum": 1200,
                "name": "Intensity",
                "position": 3,
                "stddev": 14186.94557,
                "variance": 201269424.5
              },
              {
                "average": 1.000004065,
                "count": 4673515,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.002016295327,
                "variance": 4.065446847e-06
              },
              {
                "average": 1.000008131,
                "count": 4673515,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002851466401,
                "variance": 8.130860638e-06
              },
              {
                "average": 0.5077422454,
                "count": 4673515,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999401075,
                "variance": 0.2499401111
              },
              {
                "average": 0.0002747396767,
                "count": 4673515,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01657299772,
                "variance": 0.0002746642535
              },
              {
                "average": 1.584894239,
                "count": 4673515,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.687576662,
                "variance": 2.84791499
              },
              {
                "average": -2.800804978,
                "count": 4673515,
                "maximum": 16.59600067,
                "minimum": -20.72400093,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.6892757,
                "variance": 114.2606151
              },
              {
                "average": 0.496558372,
                "count": 4673515,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999882085,
                "variance": 0.2499882087
              },
              {
                "average": 600.1838507,
                "count": 4673515,
                "maximum": 752,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 80.74864539,
                "variance": 6520.343732
              },
              {
                "average": 220881077.6,
                "count": 4673515,
                "maximum": 222304111.4,
                "minimum": 220476145.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 758844.8843,
                "variance": 575845558400.0
              },
              {
                "average": 0.496558372,
                "count": 4673515,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999882085,
                "variance": 0.2499882087
              },
              {
                "average": 0,
                "count": 4673515,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4673515,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4673515,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2087998006,
                "count": 4673515,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4064510785,
                "variance": 0.1652024792
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -227200.94,
              2304163.159,
              0.8853061107,
              -226682.24,
              2304610.279,
              13.30530611
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -227200.94004346846,
                    2304163.1585400645,
                    0.885306110738926
                  ],
                  [
                    -227200.94004346846,
                    2304610.2785400646,
                    0.885306110738926
                  ],
                  [
                    -226682.24004346845,
                    2304610.2785400646,
                    13.305306110738925
                  ],
                  [
                    -226682.24004346845,
                    2304163.1585400645,
                    13.305306110738925
                  ],
                  [
                    -227200.94004346846,
                    2304163.1585400645,
                    0.885306110738926
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T00:55:11+00:00",
            "end_time": "2018-09-08T21:09:05+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20180908_B18_NSB7_0777.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -159.9697551457113,
              70.62934654947642,
              7.551614356509204
            ],
            [
              -159.97094521603483,
              70.63391150339238,
              7.551614356509204
            ],
            [
              -159.95726988601206,
              70.63433726579964,
              10.991614356509205
            ],
            [
              -159.9560825119902,
              70.62977221568168,
              10.991614356509205
            ],
            [
              -159.9697551457113,
              70.62934654947642,
              7.551614356509204
            ]
          ]
        ]
      },
      "bbox": [
        -159.9709452,
        70.62934655,
        7.551614357,
        -159.9560825,
        70.63433727,
        10.99161436
      ],
      "properties": {
        "datetime": "2018-09-30T01:09:23Z",
        "pc:count": 6832637,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -225088.1931,
            "count": 6832637,
            "maximum": -224829.2642,
            "minimum": -225348.1642,
            "name": "X",
            "position": 0,
            "stddev": 134.898879,
            "variance": 18197.70756
          },
          {
            "average": 2304118.528,
            "count": 6832637,
            "maximum": 2304383.207,
            "minimum": 2303882.207,
            "name": "Y",
            "position": 1,
            "stddev": 128.1531508,
            "variance": 16423.23005
          },
          {
            "average": 9.158104041,
            "count": 6832637,
            "maximum": 10.99161436,
            "minimum": 7.551614357,
            "name": "Z",
            "position": 2,
            "stddev": 0.6456170165,
            "variance": 0.416821332
          },
          {
            "average": 45314.93911,
            "count": 6832637,
            "maximum": 65535,
            "minimum": 900,
            "name": "Intensity",
            "position": 3,
            "stddev": 9928.454327,
            "variance": 98574205.33
          },
          {
            "average": 1,
            "count": 6832637,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 6832637,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5049287705,
            "count": 6832637,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999757432,
            "variance": 0.2499757438
          },
          {
            "average": 0.0002685639527,
            "count": 6832637,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01638572139,
            "variance": 0.0002684918654
          },
          {
            "average": 1.182916201,
            "count": 6832637,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.3866602949,
            "variance": 0.1495061836
          },
          {
            "average": -1.216354095,
            "count": 6832637,
            "maximum": 16.60199928,
            "minimum": -20.72999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.68778956,
            "variance": 136.6044249
          },
          {
            "average": 0.5026300973,
            "count": 6832637,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999931191,
            "variance": 0.2499931192
          },
          {
            "average": 599.3304799,
            "count": 6832637,
            "maximum": 754,
            "minimum": 556,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 79.17848485,
            "variance": 6269.232463
          },
          {
            "average": 220858195.7,
            "count": 6832637,
            "maximum": 222304963.7,
            "minimum": 220476115.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 742876.2333,
            "variance": 551865098000.0
          },
          {
            "average": 0.5026300973,
            "count": 6832637,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999931191,
            "variance": 0.2499931192
          },
          {
            "average": 0,
            "count": 6832637,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6832637,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 6832637,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2578102715,
            "count": 6832637,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4374290381,
            "variance": 0.1913441634
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -225348.1642,
          2303882.207,
          7.551614357,
          -224829.2642,
          2304383.207,
          10.99161436
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -225348.16422251562,
                2303882.207125867,
                7.551614356509204
              ],
              [
                -225348.16422251562,
                2304383.207125867,
                7.551614356509204
              ],
              [
                -224829.2642225156,
                2304383.207125867,
                10.991614356509205
              ],
              [
                -224829.2642225156,
                2303882.207125867,
                10.991614356509205
              ],
              [
                -225348.16422251562,
                2303882.207125867,
                7.551614356509204
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2018-09-30T01:09:23+00:00",
        "end_time": "2018-09-08T21:08:35+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_4/20180908_B18_NSB7_0777.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20180908_B18_NSB7_0777.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_4/20180908_B18_NSB7_0777.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0777.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -159.9709452,
            70.62934655,
            7.551614357,
            -159.9560825,
            70.63433727,
            10.99161436
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -159.9697551457113,
                  70.62934654947642,
                  7.551614356509204
                ],
                [
                  -159.97094521603483,
                  70.63391150339238,
                  7.551614356509204
                ],
                [
                  -159.95726988601206,
                  70.63433726579964,
                  10.991614356509205
                ],
                [
                  -159.9560825119902,
                  70.62977221568168,
                  10.991614356509205
                ],
                [
                  -159.9697551457113,
                  70.62934654947642,
                  7.551614356509204
                ]
              ]
            ]
          },
          "id": "20180908_B18_NSB7_0777.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_4/20180908_B18_NSB7_0777.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2018-09-30T01:09:23Z",
            "pc:count": 6832637,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -225088.1931,
                "count": 6832637,
                "maximum": -224829.2642,
                "minimum": -225348.1642,
                "name": "X",
                "position": 0,
                "stddev": 134.898879,
                "variance": 18197.70756
              },
              {
                "average": 2304118.528,
                "count": 6832637,
                "maximum": 2304383.207,
                "minimum": 2303882.207,
                "name": "Y",
                "position": 1,
                "stddev": 128.1531508,
                "variance": 16423.23005
              },
              {
                "average": 9.158104041,
                "count": 6832637,
                "maximum": 10.99161436,
                "minimum": 7.551614357,
                "name": "Z",
                "position": 2,
                "stddev": 0.6456170165,
                "variance": 0.416821332
              },
              {
                "average": 45314.93911,
                "count": 6832637,
                "maximum": 65535,
                "minimum": 900,
                "name": "Intensity",
                "position": 3,
                "stddev": 9928.454327,
                "variance": 98574205.33
              },
              {
                "average": 1,
                "count": 6832637,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 6832637,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5049287705,
                "count": 6832637,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999757432,
                "variance": 0.2499757438
              },
              {
                "average": 0.0002685639527,
                "count": 6832637,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01638572139,
                "variance": 0.0002684918654
              },
              {
                "average": 1.182916201,
                "count": 6832637,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.3866602949,
                "variance": 0.1495061836
              },
              {
                "average": -1.216354095,
                "count": 6832637,
                "maximum": 16.60199928,
                "minimum": -20.72999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.68778956,
                "variance": 136.6044249
              },
              {
                "average": 0.5026300973,
                "count": 6832637,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999931191,
                "variance": 0.2499931192
              },
              {
                "average": 599.3304799,
                "count": 6832637,
                "maximum": 754,
                "minimum": 556,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 79.17848485,
                "variance": 6269.232463
              },
              {
                "average": 220858195.7,
                "count": 6832637,
                "maximum": 222304963.7,
                "minimum": 220476115.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 742876.2333,
                "variance": 551865098000.0
              },
              {
                "average": 0.5026300973,
                "count": 6832637,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999931191,
                "variance": 0.2499931192
              },
              {
                "average": 0,
                "count": 6832637,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6832637,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 6832637,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2578102715,
                "count": 6832637,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4374290381,
                "variance": 0.1913441634
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -225348.1642,
              2303882.207,
              7.551614357,
              -224829.2642,
              2304383.207,
              10.99161436
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -225348.16422251562,
                    2303882.207125867,
                    7.551614356509204
                  ],
                  [
                    -225348.16422251562,
                    2304383.207125867,
                    7.551614356509204
                  ],
                  [
                    -224829.2642225156,
                    2304383.207125867,
                    10.991614356509205
                  ],
                  [
                    -224829.2642225156,
                    2303882.207125867,
                    10.991614356509205
                  ],
                  [
                    -225348.16422251562,
                    2303882.207125867,
                    7.551614356509204
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2018-09-30T01:09:23+00:00",
            "end_time": "2018-09-08T21:08:35+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0621.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.8276780607766,
              68.34299434267072,
              0.780357245657815
            ],
            [
              -166.83011561001703,
              68.34768287131968,
              0.780357245657815
            ],
            [
              -166.8174952832,
              68.34861126018068,
              38.78035724565781
            ],
            [
              -166.81506001133715,
              68.34392254089909,
              38.78035724565781
            ],
            [
              -166.8276780607766,
              68.34299434267072,
              0.780357245657815
            ]
          ]
        ]
      },
      "bbox": [
        -166.8301156,
        68.34299434,
        0.7803572457,
        -166.81506,
        68.34861126,
        38.78035725
      ],
      "properties": {
        "datetime": "2019-08-06T20:47:11Z",
        "pc:count": 3642395,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529826.911,
            "count": 3642395,
            "maximum": -529588.8562,
            "minimum": -530123.4962,
            "name": "X",
            "position": 0,
            "stddev": 129.560297,
            "variance": 16785.87055
          },
          {
            "average": 2093952.325,
            "count": 3642395,
            "maximum": 2094237.819,
            "minimum": 2093709.859,
            "name": "Y",
            "position": 1,
            "stddev": 115.133473,
            "variance": 13255.71659
          },
          {
            "average": 3.954261484,
            "count": 3642395,
            "maximum": 38.78035725,
            "minimum": 0.7803572457,
            "name": "Z",
            "position": 2,
            "stddev": 1.097050724,
            "variance": 1.203520292
          },
          {
            "average": 38717.90515,
            "count": 3642395,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 13871.76323,
            "variance": 192425815.2
          },
          {
            "average": 1.000121349,
            "count": 3642395,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01101517298,
            "variance": 0.0001213340358
          },
          {
            "average": 1.000242148,
            "count": 3642395,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01555923511,
            "variance": 0.0002420897973
          },
          {
            "average": 0.509843386,
            "count": 3642395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499903167,
            "variance": 0.2499031764
          },
          {
            "average": 0.0005927418635,
            "count": 3642395,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02433907729,
            "variance": 0.0005923906832
          },
          {
            "average": 1.789526122,
            "count": 3642395,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.008941947,
            "variance": 4.035847748
          },
          {
            "average": -3.62091925,
            "count": 3642395,
            "maximum": 16.55400085,
            "minimum": -21.29400063,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.59166611,
            "variance": 112.1833911
          },
          {
            "average": 0.4887833417,
            "count": 3642395,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998742394,
            "variance": 0.2498742552
          },
          {
            "average": 226.351558,
            "count": 3642395,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.41029551,
            "variance": 1884.453756
          },
          {
            "average": 249107920.2,
            "count": 3642395,
            "maximum": 249159631,
            "minimum": 249091736.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28588.1255,
            "variance": 817280919.7
          },
          {
            "average": 0.4887833417,
            "count": 3642395,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998742394,
            "variance": 0.2498742552
          },
          {
            "average": 0,
            "count": 3642395,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3642395,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3642395,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2383503162,
            "count": 3642395,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4260745156,
            "variance": 0.1815394928
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -530123.4962,
          2093709.859,
          0.7803572457,
          -529588.8562,
          2094237.819,
          38.78035725
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -530123.4961620357,
                2093709.859250559,
                0.780357245657815
              ],
              [
                -530123.4961620357,
                2094237.819250559,
                0.780357245657815
              ],
              [
                -529588.8561620358,
                2094237.819250559,
                38.78035724565781
              ],
              [
                -529588.8561620358,
                2093709.859250559,
                38.78035724565781
              ],
              [
                -530123.4961620357,
                2093709.859250559,
                0.780357245657815
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:47:11+00:00",
        "end_time": "2019-08-06T01:55:36+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0621.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0621.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0621.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0621.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8301156,
            68.34299434,
            0.7803572457,
            -166.81506,
            68.34861126,
            38.78035725
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.8276780607766,
                  68.34299434267072,
                  0.780357245657815
                ],
                [
                  -166.83011561001703,
                  68.34768287131968,
                  0.780357245657815
                ],
                [
                  -166.8174952832,
                  68.34861126018068,
                  38.78035724565781
                ],
                [
                  -166.81506001133715,
                  68.34392254089909,
                  38.78035724565781
                ],
                [
                  -166.8276780607766,
                  68.34299434267072,
                  0.780357245657815
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0621.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0621.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:47:11Z",
            "pc:count": 3642395,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529826.911,
                "count": 3642395,
                "maximum": -529588.8562,
                "minimum": -530123.4962,
                "name": "X",
                "position": 0,
                "stddev": 129.560297,
                "variance": 16785.87055
              },
              {
                "average": 2093952.325,
                "count": 3642395,
                "maximum": 2094237.819,
                "minimum": 2093709.859,
                "name": "Y",
                "position": 1,
                "stddev": 115.133473,
                "variance": 13255.71659
              },
              {
                "average": 3.954261484,
                "count": 3642395,
                "maximum": 38.78035725,
                "minimum": 0.7803572457,
                "name": "Z",
                "position": 2,
                "stddev": 1.097050724,
                "variance": 1.203520292
              },
              {
                "average": 38717.90515,
                "count": 3642395,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 13871.76323,
                "variance": 192425815.2
              },
              {
                "average": 1.000121349,
                "count": 3642395,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01101517298,
                "variance": 0.0001213340358
              },
              {
                "average": 1.000242148,
                "count": 3642395,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01555923511,
                "variance": 0.0002420897973
              },
              {
                "average": 0.509843386,
                "count": 3642395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499903167,
                "variance": 0.2499031764
              },
              {
                "average": 0.0005927418635,
                "count": 3642395,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02433907729,
                "variance": 0.0005923906832
              },
              {
                "average": 1.789526122,
                "count": 3642395,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.008941947,
                "variance": 4.035847748
              },
              {
                "average": -3.62091925,
                "count": 3642395,
                "maximum": 16.55400085,
                "minimum": -21.29400063,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.59166611,
                "variance": 112.1833911
              },
              {
                "average": 0.4887833417,
                "count": 3642395,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998742394,
                "variance": 0.2498742552
              },
              {
                "average": 226.351558,
                "count": 3642395,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.41029551,
                "variance": 1884.453756
              },
              {
                "average": 249107920.2,
                "count": 3642395,
                "maximum": 249159631,
                "minimum": 249091736.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28588.1255,
                "variance": 817280919.7
              },
              {
                "average": 0.4887833417,
                "count": 3642395,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998742394,
                "variance": 0.2498742552
              },
              {
                "average": 0,
                "count": 3642395,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3642395,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3642395,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2383503162,
                "count": 3642395,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4260745156,
                "variance": 0.1815394928
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -530123.4962,
              2093709.859,
              0.7803572457,
              -529588.8562,
              2094237.819,
              38.78035725
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -530123.4961620357,
                    2093709.859250559,
                    0.780357245657815
                  ],
                  [
                    -530123.4961620357,
                    2094237.819250559,
                    0.780357245657815
                  ],
                  [
                    -529588.8561620358,
                    2094237.819250559,
                    38.78035724565781
                  ],
                  [
                    -529588.8561620358,
                    2093709.859250559,
                    38.78035724565781
                  ],
                  [
                    -530123.4961620357,
                    2093709.859250559,
                    0.780357245657815
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:47:11+00:00",
            "end_time": "2019-08-06T01:55:36+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0554.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.82793671897213,
              68.34028060999195,
              0.814893864452948
            ],
            [
              -166.82966596967177,
              68.34360718929227,
              0.814893864452948
            ],
            [
              -166.81735121037053,
              68.34451321238295,
              27.43489386445295
            ],
            [
              -166.81562353622576,
              68.3411865011036,
              27.43489386445295
            ],
            [
              -166.82793671897213,
              68.34028060999195,
              0.814893864452948
            ]
          ]
        ]
      },
      "bbox": [
        -166.829666,
        68.34028061,
        0.8148938645,
        -166.8156235,
        68.34451321,
        27.43489386
      ],
      "properties": {
        "datetime": "2019-08-06T20:49:11Z",
        "pc:count": 2856340,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529936.9738,
            "count": 2856340,
            "maximum": -529669.8423,
            "minimum": -530191.6223,
            "name": "X",
            "position": 0,
            "stddev": 133.175193,
            "variance": 17735.63203
          },
          {
            "average": 2093585.417,
            "count": 2856340,
            "maximum": 2093792.197,
            "minimum": 2093417.597,
            "name": "Y",
            "position": 1,
            "stddev": 88.81571217,
            "variance": 7888.230728
          },
          {
            "average": 4.109015198,
            "count": 2856340,
            "maximum": 27.43489386,
            "minimum": 0.8148938645,
            "name": "Z",
            "position": 2,
            "stddev": 0.7548660233,
            "variance": 0.5698227131
          },
          {
            "average": 33097.87453,
            "count": 2856340,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 10639.87537,
            "variance": 113206947.9
          },
          {
            "average": 1.00000105,
            "count": 2856340,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001024838718,
            "variance": 1.050294398e-06
          },
          {
            "average": 1.000002101,
            "count": 2856340,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.001449340053,
            "variance": 2.100586589e-06
          },
          {
            "average": 0.4955138394,
            "count": 2856340,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999799615,
            "variance": 0.2499799619
          },
          {
            "average": 0.0004295707094,
            "count": 2856340,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02072163914,
            "variance": 0.0004293863287
          },
          {
            "average": 1.389895461,
            "count": 2856340,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.210864179,
            "variance": 1.46619206
          },
          {
            "average": 2.601401623,
            "count": 2856340,
            "maximum": 21.66600037,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.82844958,
            "variance": 117.2553204
          },
          {
            "average": 0.499437742,
            "count": 2856340,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999997714,
            "variance": 0.2499997714
          },
          {
            "average": 228.5681841,
            "count": 2856340,
            "maximum": 306,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 46.04174146,
            "variance": 2119.841956
          },
          {
            "average": 249109721.5,
            "count": 2856340,
            "maximum": 249159751.3,
            "minimum": 249091627,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29932.74361,
            "variance": 895969140.3
          },
          {
            "average": 0.499437742,
            "count": 2856340,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999997714,
            "variance": 0.2499997714
          },
          {
            "average": 0,
            "count": 2856340,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2856340,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2856340,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.24405708,
            "count": 2856340,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4295268168,
            "variance": 0.1844932863
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -530191.6223,
          2093417.597,
          0.8148938645,
          -529669.8423,
          2093792.197,
          27.43489386
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -530191.6223035391,
                2093417.5965510693,
                0.814893864452948
              ],
              [
                -530191.6223035391,
                2093792.1965510694,
                0.814893864452948
              ],
              [
                -529669.842303539,
                2093792.1965510694,
                27.43489386445295
              ],
              [
                -529669.842303539,
                2093417.5965510693,
                27.43489386445295
              ],
              [
                -530191.6223035391,
                2093417.5965510693,
                0.814893864452948
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:49:11+00:00",
        "end_time": "2019-08-06T01:53:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0554.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0554.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0554.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0554.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.829666,
            68.34028061,
            0.8148938645,
            -166.8156235,
            68.34451321,
            27.43489386
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.82793671897213,
                  68.34028060999195,
                  0.814893864452948
                ],
                [
                  -166.82966596967177,
                  68.34360718929227,
                  0.814893864452948
                ],
                [
                  -166.81735121037053,
                  68.34451321238295,
                  27.43489386445295
                ],
                [
                  -166.81562353622576,
                  68.3411865011036,
                  27.43489386445295
                ],
                [
                  -166.82793671897213,
                  68.34028060999195,
                  0.814893864452948
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0554.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0554.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:49:11Z",
            "pc:count": 2856340,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529936.9738,
                "count": 2856340,
                "maximum": -529669.8423,
                "minimum": -530191.6223,
                "name": "X",
                "position": 0,
                "stddev": 133.175193,
                "variance": 17735.63203
              },
              {
                "average": 2093585.417,
                "count": 2856340,
                "maximum": 2093792.197,
                "minimum": 2093417.597,
                "name": "Y",
                "position": 1,
                "stddev": 88.81571217,
                "variance": 7888.230728
              },
              {
                "average": 4.109015198,
                "count": 2856340,
                "maximum": 27.43489386,
                "minimum": 0.8148938645,
                "name": "Z",
                "position": 2,
                "stddev": 0.7548660233,
                "variance": 0.5698227131
              },
              {
                "average": 33097.87453,
                "count": 2856340,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 10639.87537,
                "variance": 113206947.9
              },
              {
                "average": 1.00000105,
                "count": 2856340,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001024838718,
                "variance": 1.050294398e-06
              },
              {
                "average": 1.000002101,
                "count": 2856340,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.001449340053,
                "variance": 2.100586589e-06
              },
              {
                "average": 0.4955138394,
                "count": 2856340,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999799615,
                "variance": 0.2499799619
              },
              {
                "average": 0.0004295707094,
                "count": 2856340,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02072163914,
                "variance": 0.0004293863287
              },
              {
                "average": 1.389895461,
                "count": 2856340,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.210864179,
                "variance": 1.46619206
              },
              {
                "average": 2.601401623,
                "count": 2856340,
                "maximum": 21.66600037,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.82844958,
                "variance": 117.2553204
              },
              {
                "average": 0.499437742,
                "count": 2856340,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999997714,
                "variance": 0.2499997714
              },
              {
                "average": 228.5681841,
                "count": 2856340,
                "maximum": 306,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 46.04174146,
                "variance": 2119.841956
              },
              {
                "average": 249109721.5,
                "count": 2856340,
                "maximum": 249159751.3,
                "minimum": 249091627,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29932.74361,
                "variance": 895969140.3
              },
              {
                "average": 0.499437742,
                "count": 2856340,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999997714,
                "variance": 0.2499997714
              },
              {
                "average": 0,
                "count": 2856340,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2856340,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2856340,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.24405708,
                "count": 2856340,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4295268168,
                "variance": 0.1844932863
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -530191.6223,
              2093417.597,
              0.8148938645,
              -529669.8423,
              2093792.197,
              27.43489386
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -530191.6223035391,
                    2093417.5965510693,
                    0.814893864452948
                  ],
                  [
                    -530191.6223035391,
                    2093792.1965510694,
                    0.814893864452948
                  ],
                  [
                    -529669.842303539,
                    2093792.1965510694,
                    27.43489386445295
                  ],
                  [
                    -529669.842303539,
                    2093417.5965510693,
                    27.43489386445295
                  ],
                  [
                    -530191.6223035391,
                    2093417.5965510693,
                    0.814893864452948
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:49:11+00:00",
            "end_time": "2019-08-06T01:53:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0685.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.81672941208737,
              68.34714800844948,
              0.745107282493876
            ],
            [
              -166.81915202150248,
              68.35181118477094,
              0.745107282493876
            ],
            [
              -166.80653109080592,
              68.35273866544874,
              46.04510728249388
            ],
            [
              -166.804110747061,
              68.34807529967068,
              46.04510728249388
            ],
            [
              -166.81672941208737,
              68.34714800844948,
              0.745107282493876
            ]
          ]
        ]
      },
      "bbox": [
        -166.819152,
        68.34714801,
        0.7451072825,
        -166.8041107,
        68.35273867,
        46.04510728
      ],
      "properties": {
        "datetime": "2019-08-06T20:47:04Z",
        "pc:count": 3512441,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529306.0967,
            "count": 3512441,
            "maximum": -529054.0604,
            "minimum": -529588.6204,
            "name": "X",
            "position": 0,
            "stddev": 134.3016555,
            "variance": 18036.93467
          },
          {
            "average": 2094282.923,
            "count": 3512441,
            "maximum": 2094598.088,
            "minimum": 2094073.008,
            "name": "Y",
            "position": 1,
            "stddev": 112.5316866,
            "variance": 12663.38048
          },
          {
            "average": 3.911827521,
            "count": 3512441,
            "maximum": 46.04510728,
            "minimum": 0.7451072825,
            "name": "Z",
            "position": 2,
            "stddev": 1.373265361,
            "variance": 1.885857751
          },
          {
            "average": 34111.63195,
            "count": 3512441,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 14465.24414,
            "variance": 209243288
          },
          {
            "average": 1.000048115,
            "count": 3512441,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00693630924,
            "variance": 4.811238587e-05
          },
          {
            "average": 1.000096229,
            "count": 3512441,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.009809186597,
            "variance": 9.622014169e-05
          },
          {
            "average": 0.5016946904,
            "count": 3512441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999971992,
            "variance": 0.2499971992
          },
          {
            "average": 0.0005434966737,
            "count": 3512441,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0233066823,
            "variance": 0.0005432014397
          },
          {
            "average": 2.060091258,
            "count": 3512441,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.377914334,
            "variance": 5.65447658
          },
          {
            "average": -3.165810668,
            "count": 3512441,
            "maximum": 16.18799973,
            "minimum": -21.16200066,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.45605157,
            "variance": 109.3290144
          },
          {
            "average": 0.4813464482,
            "count": 3512441,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499651995,
            "variance": 0.2496521161
          },
          {
            "average": 228.5237423,
            "count": 3512441,
            "maximum": 305,
            "minimum": 202,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.77229941,
            "variance": 1916.014195
          },
          {
            "average": 249109028.2,
            "count": 3512441,
            "maximum": 249159624.1,
            "minimum": 249091985.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29033.51518,
            "variance": 842945003.9
          },
          {
            "average": 0.4813464482,
            "count": 3512441,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499651995,
            "variance": 0.2496521161
          },
          {
            "average": 0,
            "count": 3512441,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3512441,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3512441,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2040686235,
            "count": 3512441,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4030194371,
            "variance": 0.1624246666
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529588.6204,
          2094073.008,
          0.7451072825,
          -529054.0604,
          2094598.088,
          46.04510728
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529588.6203825498,
                2094073.0084409262,
                0.745107282493876
              ],
              [
                -529588.6203825498,
                2094598.0884409263,
                0.745107282493876
              ],
              [
                -529054.0603825498,
                2094598.0884409263,
                46.04510728249388
              ],
              [
                -529054.0603825498,
                2094073.0084409262,
                46.04510728249388
              ],
              [
                -529588.6203825498,
                2094073.0084409262,
                0.745107282493876
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:47:04+00:00",
        "end_time": "2019-08-06T01:59:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0685.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0685.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0685.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0685.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.819152,
            68.34714801,
            0.7451072825,
            -166.8041107,
            68.35273867,
            46.04510728
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.81672941208737,
                  68.34714800844948,
                  0.745107282493876
                ],
                [
                  -166.81915202150248,
                  68.35181118477094,
                  0.745107282493876
                ],
                [
                  -166.80653109080592,
                  68.35273866544874,
                  46.04510728249388
                ],
                [
                  -166.804110747061,
                  68.34807529967068,
                  46.04510728249388
                ],
                [
                  -166.81672941208737,
                  68.34714800844948,
                  0.745107282493876
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0685.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0685.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:47:04Z",
            "pc:count": 3512441,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529306.0967,
                "count": 3512441,
                "maximum": -529054.0604,
                "minimum": -529588.6204,
                "name": "X",
                "position": 0,
                "stddev": 134.3016555,
                "variance": 18036.93467
              },
              {
                "average": 2094282.923,
                "count": 3512441,
                "maximum": 2094598.088,
                "minimum": 2094073.008,
                "name": "Y",
                "position": 1,
                "stddev": 112.5316866,
                "variance": 12663.38048
              },
              {
                "average": 3.911827521,
                "count": 3512441,
                "maximum": 46.04510728,
                "minimum": 0.7451072825,
                "name": "Z",
                "position": 2,
                "stddev": 1.373265361,
                "variance": 1.885857751
              },
              {
                "average": 34111.63195,
                "count": 3512441,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 14465.24414,
                "variance": 209243288
              },
              {
                "average": 1.000048115,
                "count": 3512441,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00693630924,
                "variance": 4.811238587e-05
              },
              {
                "average": 1.000096229,
                "count": 3512441,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.009809186597,
                "variance": 9.622014169e-05
              },
              {
                "average": 0.5016946904,
                "count": 3512441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999971992,
                "variance": 0.2499971992
              },
              {
                "average": 0.0005434966737,
                "count": 3512441,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0233066823,
                "variance": 0.0005432014397
              },
              {
                "average": 2.060091258,
                "count": 3512441,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.377914334,
                "variance": 5.65447658
              },
              {
                "average": -3.165810668,
                "count": 3512441,
                "maximum": 16.18799973,
                "minimum": -21.16200066,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.45605157,
                "variance": 109.3290144
              },
              {
                "average": 0.4813464482,
                "count": 3512441,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499651995,
                "variance": 0.2496521161
              },
              {
                "average": 228.5237423,
                "count": 3512441,
                "maximum": 305,
                "minimum": 202,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.77229941,
                "variance": 1916.014195
              },
              {
                "average": 249109028.2,
                "count": 3512441,
                "maximum": 249159624.1,
                "minimum": 249091985.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29033.51518,
                "variance": 842945003.9
              },
              {
                "average": 0.4813464482,
                "count": 3512441,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499651995,
                "variance": 0.2496521161
              },
              {
                "average": 0,
                "count": 3512441,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3512441,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3512441,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2040686235,
                "count": 3512441,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4030194371,
                "variance": 0.1624246666
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529588.6204,
              2094073.008,
              0.7451072825,
              -529054.0604,
              2094598.088,
              46.04510728
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529588.6203825498,
                    2094073.0084409262,
                    0.745107282493876
                  ],
                  [
                    -529588.6203825498,
                    2094598.0884409263,
                    0.745107282493876
                  ],
                  [
                    -529054.0603825498,
                    2094598.0884409263,
                    46.04510728249388
                  ],
                  [
                    -529054.0603825498,
                    2094073.0084409262,
                    46.04510728249388
                  ],
                  [
                    -529588.6203825498,
                    2094073.0084409262,
                    0.745107282493876
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:47:04+00:00",
            "end_time": "2019-08-06T01:59:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0555.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.81687404927186,
              68.34132199015002,
              0.788620473991845
            ],
            [
              -166.81810674434462,
              68.34369543672446,
              0.788620473991845
            ],
            [
              -166.80625178422036,
              68.34456683913587,
              36.34862047399184
            ],
            [
              -166.8050201721057,
              68.34219330199092,
              36.34862047399184
            ],
            [
              -166.81687404927186,
              68.34132199015002,
              0.788620473991845
            ]
          ]
        ]
      },
      "bbox": [
        -166.8181067,
        68.34132199,
        0.788620474,
        -166.8050202,
        68.34456684,
        36.34862047
      ],
      "properties": {
        "datetime": "2019-08-06T20:49:15Z",
        "pc:count": 1813805,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529478.3369,
            "count": 1813805,
            "maximum": -529215.7309,
            "minimum": -529718.0109,
            "name": "X",
            "position": 0,
            "stddev": 131.4779572,
            "variance": 17286.45324
          },
          {
            "average": 2093566.732,
            "count": 1813805,
            "maximum": 2093709.526,
            "minimum": 2093442.266,
            "name": "Y",
            "position": 1,
            "stddev": 61.35835243,
            "variance": 3764.847414
          },
          {
            "average": 4.064374499,
            "count": 1813805,
            "maximum": 36.34862047,
            "minimum": 0.788620474,
            "name": "Z",
            "position": 2,
            "stddev": 1.029829259,
            "variance": 1.060548302
          },
          {
            "average": 24559.81123,
            "count": 1813805,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 6417.823915,
            "variance": 41188463.8
          },
          {
            "average": 1.000015437,
            "count": 1813805,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003928986041,
            "variance": 1.543693131e-05
          },
          {
            "average": 1.000030874,
            "count": 1813805,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.005556382457,
            "variance": 3.087338601e-05
          },
          {
            "average": 0.4920010696,
            "count": 1813805,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999361508,
            "variance": 0.2499361549
          },
          {
            "average": 0.0003605679773,
            "count": 1813805,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01898520916,
            "variance": 0.0003604381667
          },
          {
            "average": 1.579764638,
            "count": 1813805,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.65706188,
            "variance": 2.745854073
          },
          {
            "average": 0.7707280735,
            "count": 1813805,
            "maximum": 21.34199905,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.680095028,
            "variance": 93.70423975
          },
          {
            "average": 0.4917965272,
            "count": 1813805,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999328363,
            "variance": 0.2499328408
          },
          {
            "average": 222.9792023,
            "count": 1813805,
            "maximum": 306,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 42.4787317,
            "variance": 1804.442647
          },
          {
            "average": 249106104.2,
            "count": 1813805,
            "maximum": 249159755.8,
            "minimum": 249091620.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 27680.43642,
            "variance": 766206560.3
          },
          {
            "average": 0.4917965272,
            "count": 1813805,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999328363,
            "variance": 0.2499328408
          },
          {
            "average": 0,
            "count": 1813805,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1813805,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1813805,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1671706716,
            "count": 1813805,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3731282821,
            "variance": 0.1392247149
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529718.0109,
          2093442.266,
          0.788620474,
          -529215.7309,
          2093709.526,
          36.34862047
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529718.0109132935,
                2093442.2661002604,
                0.788620473991845
              ],
              [
                -529718.0109132935,
                2093709.5261002602,
                0.788620473991845
              ],
              [
                -529215.7309132934,
                2093709.5261002602,
                36.34862047399184
              ],
              [
                -529215.7309132934,
                2093442.2661002604,
                36.34862047399184
              ],
              [
                -529718.0109132935,
                2093442.2661002604,
                0.788620473991845
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:49:15+00:00",
        "end_time": "2019-08-06T01:53:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0555.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0555.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0555.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0555.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8181067,
            68.34132199,
            0.788620474,
            -166.8050202,
            68.34456684,
            36.34862047
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.81687404927186,
                  68.34132199015002,
                  0.788620473991845
                ],
                [
                  -166.81810674434462,
                  68.34369543672446,
                  0.788620473991845
                ],
                [
                  -166.80625178422036,
                  68.34456683913587,
                  36.34862047399184
                ],
                [
                  -166.8050201721057,
                  68.34219330199092,
                  36.34862047399184
                ],
                [
                  -166.81687404927186,
                  68.34132199015002,
                  0.788620473991845
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0555.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0555.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:49:15Z",
            "pc:count": 1813805,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529478.3369,
                "count": 1813805,
                "maximum": -529215.7309,
                "minimum": -529718.0109,
                "name": "X",
                "position": 0,
                "stddev": 131.4779572,
                "variance": 17286.45324
              },
              {
                "average": 2093566.732,
                "count": 1813805,
                "maximum": 2093709.526,
                "minimum": 2093442.266,
                "name": "Y",
                "position": 1,
                "stddev": 61.35835243,
                "variance": 3764.847414
              },
              {
                "average": 4.064374499,
                "count": 1813805,
                "maximum": 36.34862047,
                "minimum": 0.788620474,
                "name": "Z",
                "position": 2,
                "stddev": 1.029829259,
                "variance": 1.060548302
              },
              {
                "average": 24559.81123,
                "count": 1813805,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 6417.823915,
                "variance": 41188463.8
              },
              {
                "average": 1.000015437,
                "count": 1813805,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003928986041,
                "variance": 1.543693131e-05
              },
              {
                "average": 1.000030874,
                "count": 1813805,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.005556382457,
                "variance": 3.087338601e-05
              },
              {
                "average": 0.4920010696,
                "count": 1813805,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999361508,
                "variance": 0.2499361549
              },
              {
                "average": 0.0003605679773,
                "count": 1813805,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01898520916,
                "variance": 0.0003604381667
              },
              {
                "average": 1.579764638,
                "count": 1813805,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.65706188,
                "variance": 2.745854073
              },
              {
                "average": 0.7707280735,
                "count": 1813805,
                "maximum": 21.34199905,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.680095028,
                "variance": 93.70423975
              },
              {
                "average": 0.4917965272,
                "count": 1813805,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999328363,
                "variance": 0.2499328408
              },
              {
                "average": 222.9792023,
                "count": 1813805,
                "maximum": 306,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 42.4787317,
                "variance": 1804.442647
              },
              {
                "average": 249106104.2,
                "count": 1813805,
                "maximum": 249159755.8,
                "minimum": 249091620.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 27680.43642,
                "variance": 766206560.3
              },
              {
                "average": 0.4917965272,
                "count": 1813805,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999328363,
                "variance": 0.2499328408
              },
              {
                "average": 0,
                "count": 1813805,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1813805,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1813805,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1671706716,
                "count": 1813805,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3731282821,
                "variance": 0.1392247149
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529718.0109,
              2093442.266,
              0.788620474,
              -529215.7309,
              2093709.526,
              36.34862047
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529718.0109132935,
                    2093442.2661002604,
                    0.788620473991845
                  ],
                  [
                    -529718.0109132935,
                    2093709.5261002602,
                    0.788620473991845
                  ],
                  [
                    -529215.7309132934,
                    2093709.5261002602,
                    36.34862047399184
                  ],
                  [
                    -529215.7309132934,
                    2093442.2661002604,
                    36.34862047399184
                  ],
                  [
                    -529718.0109132935,
                    2093442.2661002604,
                    0.788620473991845
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:49:15+00:00",
            "end_time": "2019-08-06T01:53:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0556.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.80574288739354,
              68.3421368474267,
              0.82803391004058
            ],
            [
              -166.80659507338095,
              68.3437791175059,
              0.82803391004058
            ],
            [
              -166.79515415809686,
              68.34461932262609,
              6.228033910040581
            ],
            [
              -166.7943026953466,
              68.34297699211935,
              6.228033910040581
            ],
            [
              -166.80574288739354,
              68.3421368474267,
              0.82803391004058
            ]
          ]
        ]
      },
      "bbox": [
        -166.8065951,
        68.34213685,
        0.82803391,
        -166.7943027,
        68.34461932,
        6.22803391
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:57Z",
        "pc:count": 1021486,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529021.1591,
            "count": 1021486,
            "maximum": -528761.7043,
            "minimum": -529246.4243,
            "name": "X",
            "position": 0,
            "stddev": 131.317265,
            "variance": 17244.22408
          },
          {
            "average": 2093524.935,
            "count": 1021486,
            "maximum": 2093626.822,
            "minimum": 2093441.902,
            "name": "Y",
            "position": 1,
            "stddev": 39.25966424,
            "variance": 1541.321236
          },
          {
            "average": 3.926761382,
            "count": 1021486,
            "maximum": 6.22803391,
            "minimum": 0.82803391,
            "name": "Z",
            "position": 2,
            "stddev": 1.224500069,
            "variance": 1.49940042
          },
          {
            "average": 22439.94062,
            "count": 1021486,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 4276.880944,
            "variance": 18291710.61
          },
          {
            "average": 1,
            "count": 1021486,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 1021486,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4897051942,
            "count": 1021486,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998942504,
            "variance": 0.2498942616
          },
          {
            "average": 0.0003132691001,
            "count": 1021486,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0176966457,
            "variance": 0.0003131712692
          },
          {
            "average": 1.683863509,
            "count": 1021486,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.88148681,
            "variance": 3.539992618
          },
          {
            "average": -0.6659610565,
            "count": 1021486,
            "maximum": 13.87800026,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.182236635,
            "variance": 84.31346962
          },
          {
            "average": 0.4939402008,
            "count": 1021486,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999635222,
            "variance": 0.2499635235
          },
          {
            "average": 222.2531939,
            "count": 1021486,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 41.99965076,
            "variance": 1763.970664
          },
          {
            "average": 249105668.3,
            "count": 1021486,
            "maximum": 249159617.2,
            "minimum": 249091613.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 27377.46342,
            "variance": 749525503
          },
          {
            "average": 0.4939402008,
            "count": 1021486,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999635222,
            "variance": 0.2499635235
          },
          {
            "average": 0,
            "count": 1021486,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1021486,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1021486,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2025519684,
            "count": 1021486,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4019015136,
            "variance": 0.1615248266
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529246.4243,
          2093441.902,
          0.82803391,
          -528761.7043,
          2093626.822,
          6.22803391
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529246.4243406028,
                2093441.9020603802,
                0.82803391004058
              ],
              [
                -529246.4243406028,
                2093626.8220603801,
                0.82803391004058
              ],
              [
                -528761.7043406029,
                2093626.8220603801,
                6.228033910040581
              ],
              [
                -528761.7043406029,
                2093441.9020603802,
                6.228033910040581
              ],
              [
                -529246.4243406028,
                2093441.9020603802,
                0.82803391004058
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:57+00:00",
        "end_time": "2019-08-06T01:53:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0556.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0556.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0556.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0556.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8065951,
            68.34213685,
            0.82803391,
            -166.7943027,
            68.34461932,
            6.22803391
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.80574288739354,
                  68.3421368474267,
                  0.82803391004058
                ],
                [
                  -166.80659507338095,
                  68.3437791175059,
                  0.82803391004058
                ],
                [
                  -166.79515415809686,
                  68.34461932262609,
                  6.228033910040581
                ],
                [
                  -166.7943026953466,
                  68.34297699211935,
                  6.228033910040581
                ],
                [
                  -166.80574288739354,
                  68.3421368474267,
                  0.82803391004058
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0556.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0556.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:57Z",
            "pc:count": 1021486,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529021.1591,
                "count": 1021486,
                "maximum": -528761.7043,
                "minimum": -529246.4243,
                "name": "X",
                "position": 0,
                "stddev": 131.317265,
                "variance": 17244.22408
              },
              {
                "average": 2093524.935,
                "count": 1021486,
                "maximum": 2093626.822,
                "minimum": 2093441.902,
                "name": "Y",
                "position": 1,
                "stddev": 39.25966424,
                "variance": 1541.321236
              },
              {
                "average": 3.926761382,
                "count": 1021486,
                "maximum": 6.22803391,
                "minimum": 0.82803391,
                "name": "Z",
                "position": 2,
                "stddev": 1.224500069,
                "variance": 1.49940042
              },
              {
                "average": 22439.94062,
                "count": 1021486,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 4276.880944,
                "variance": 18291710.61
              },
              {
                "average": 1,
                "count": 1021486,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 1021486,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4897051942,
                "count": 1021486,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998942504,
                "variance": 0.2498942616
              },
              {
                "average": 0.0003132691001,
                "count": 1021486,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0176966457,
                "variance": 0.0003131712692
              },
              {
                "average": 1.683863509,
                "count": 1021486,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.88148681,
                "variance": 3.539992618
              },
              {
                "average": -0.6659610565,
                "count": 1021486,
                "maximum": 13.87800026,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.182236635,
                "variance": 84.31346962
              },
              {
                "average": 0.4939402008,
                "count": 1021486,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999635222,
                "variance": 0.2499635235
              },
              {
                "average": 222.2531939,
                "count": 1021486,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 41.99965076,
                "variance": 1763.970664
              },
              {
                "average": 249105668.3,
                "count": 1021486,
                "maximum": 249159617.2,
                "minimum": 249091613.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 27377.46342,
                "variance": 749525503
              },
              {
                "average": 0.4939402008,
                "count": 1021486,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999635222,
                "variance": 0.2499635235
              },
              {
                "average": 0,
                "count": 1021486,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1021486,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1021486,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2025519684,
                "count": 1021486,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4019015136,
                "variance": 0.1615248266
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529246.4243,
              2093441.902,
              0.82803391,
              -528761.7043,
              2093626.822,
              6.22803391
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529246.4243406028,
                    2093441.9020603802,
                    0.82803391004058
                  ],
                  [
                    -529246.4243406028,
                    2093626.8220603801,
                    0.82803391004058
                  ],
                  [
                    -528761.7043406029,
                    2093626.8220603801,
                    6.228033910040581
                  ],
                  [
                    -528761.7043406029,
                    2093441.9020603802,
                    6.228033910040581
                  ],
                  [
                    -529246.4243406028,
                    2093441.9020603802,
                    0.82803391004058
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:57+00:00",
            "end_time": "2019-08-06T01:53:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0627.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.76109671126275,
              68.34331033644067,
              2.174901906552366
            ],
            [
              -166.7635225308817,
              68.34800120907754,
              2.174901906552366
            ],
            [
              -166.75089863182578,
              68.34892490656571,
              17.134901906552365
            ],
            [
              -166.74847509235542,
              68.34423384416168,
              17.134901906552365
            ],
            [
              -166.76109671126275,
              68.34331033644067,
              2.174901906552366
            ]
          ]
        ]
      },
      "bbox": [
        -166.7635225,
        68.34331034,
        2.174901907,
        -166.7484751,
        68.34892491,
        17.13490191
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:30Z",
        "pc:count": 4038743,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527129.3563,
            "count": 4038743,
            "maximum": -526864.6097,
            "minimum": -527399.2897,
            "name": "X",
            "position": 0,
            "stddev": 134.2249206,
            "variance": 18016.32931
          },
          {
            "average": 2093491.849,
            "count": 4038743,
            "maximum": 2093742.137,
            "minimum": 2093214.017,
            "name": "Y",
            "position": 1,
            "stddev": 129.9253492,
            "variance": 16880.59637
          },
          {
            "average": 5.251738415,
            "count": 4038743,
            "maximum": 17.13490191,
            "minimum": 2.174901907,
            "name": "Z",
            "position": 2,
            "stddev": 0.6892825245,
            "variance": 0.4751103985
          },
          {
            "average": 26299.20334,
            "count": 4038743,
            "maximum": 65535,
            "minimum": 1626,
            "name": "Intensity",
            "position": 3,
            "stddev": 4516.795624,
            "variance": 20401442.71
          },
          {
            "average": 1.000766575,
            "count": 4038743,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02800553935,
            "variance": 0.0007843102341
          },
          {
            "average": 1.001536369,
            "count": 4038743,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0398743913,
            "variance": 0.001589967081
          },
          {
            "average": 0.5017991984,
            "count": 4038743,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999968248,
            "variance": 0.2499968248
          },
          {
            "average": 0.0004226562572,
            "count": 4038743,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0205542629,
            "variance": 0.0004224777235
          },
          {
            "average": 1.240904163,
            "count": 4038743,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4355049684,
            "variance": 0.1896645775
          },
          {
            "average": -3.236954147,
            "count": 4038743,
            "maximum": 16.11599922,
            "minimum": -21.10199928,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.47454808,
            "variance": 109.7161576
          },
          {
            "average": 0.4714385144,
            "count": 4038743,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991836368,
            "variance": 0.2491843032
          },
          {
            "average": 229.8783988,
            "count": 4038743,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.74676732,
            "variance": 2092.76672
          },
          {
            "average": 249110381.8,
            "count": 4038743,
            "maximum": 249159590,
            "minimum": 249091583.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30028.1017,
            "variance": 901686891.7
          },
          {
            "average": 0.4714385144,
            "count": 4038743,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991836368,
            "variance": 0.2491843032
          },
          {
            "average": 0,
            "count": 4038743,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4038743,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4038743,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2385905714,
            "count": 4038743,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4262219558,
            "variance": 0.1816651556
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527399.2897,
          2093214.017,
          2.174901907,
          -526864.6097,
          2093742.137,
          17.13490191
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527399.2896949487,
                2093214.017342396,
                2.174901906552366
              ],
              [
                -527399.2896949487,
                2093742.1373423962,
                2.174901906552366
              ],
              [
                -526864.6096949488,
                2093742.1373423962,
                17.134901906552365
              ],
              [
                -526864.6096949488,
                2093214.017342396,
                17.134901906552365
              ],
              [
                -527399.2896949487,
                2093214.017342396,
                2.174901906552366
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:30+00:00",
        "end_time": "2019-08-06T01:53:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0627.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0627.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0627.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0627.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7635225,
            68.34331034,
            2.174901907,
            -166.7484751,
            68.34892491,
            17.13490191
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.76109671126275,
                  68.34331033644067,
                  2.174901906552366
                ],
                [
                  -166.7635225308817,
                  68.34800120907754,
                  2.174901906552366
                ],
                [
                  -166.75089863182578,
                  68.34892490656571,
                  17.134901906552365
                ],
                [
                  -166.74847509235542,
                  68.34423384416168,
                  17.134901906552365
                ],
                [
                  -166.76109671126275,
                  68.34331033644067,
                  2.174901906552366
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0627.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0627.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:30Z",
            "pc:count": 4038743,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527129.3563,
                "count": 4038743,
                "maximum": -526864.6097,
                "minimum": -527399.2897,
                "name": "X",
                "position": 0,
                "stddev": 134.2249206,
                "variance": 18016.32931
              },
              {
                "average": 2093491.849,
                "count": 4038743,
                "maximum": 2093742.137,
                "minimum": 2093214.017,
                "name": "Y",
                "position": 1,
                "stddev": 129.9253492,
                "variance": 16880.59637
              },
              {
                "average": 5.251738415,
                "count": 4038743,
                "maximum": 17.13490191,
                "minimum": 2.174901907,
                "name": "Z",
                "position": 2,
                "stddev": 0.6892825245,
                "variance": 0.4751103985
              },
              {
                "average": 26299.20334,
                "count": 4038743,
                "maximum": 65535,
                "minimum": 1626,
                "name": "Intensity",
                "position": 3,
                "stddev": 4516.795624,
                "variance": 20401442.71
              },
              {
                "average": 1.000766575,
                "count": 4038743,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02800553935,
                "variance": 0.0007843102341
              },
              {
                "average": 1.001536369,
                "count": 4038743,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0398743913,
                "variance": 0.001589967081
              },
              {
                "average": 0.5017991984,
                "count": 4038743,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999968248,
                "variance": 0.2499968248
              },
              {
                "average": 0.0004226562572,
                "count": 4038743,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0205542629,
                "variance": 0.0004224777235
              },
              {
                "average": 1.240904163,
                "count": 4038743,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4355049684,
                "variance": 0.1896645775
              },
              {
                "average": -3.236954147,
                "count": 4038743,
                "maximum": 16.11599922,
                "minimum": -21.10199928,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.47454808,
                "variance": 109.7161576
              },
              {
                "average": 0.4714385144,
                "count": 4038743,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991836368,
                "variance": 0.2491843032
              },
              {
                "average": 229.8783988,
                "count": 4038743,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.74676732,
                "variance": 2092.76672
              },
              {
                "average": 249110381.8,
                "count": 4038743,
                "maximum": 249159590,
                "minimum": 249091583.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30028.1017,
                "variance": 901686891.7
              },
              {
                "average": 0.4714385144,
                "count": 4038743,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991836368,
                "variance": 0.2491843032
              },
              {
                "average": 0,
                "count": 4038743,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4038743,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4038743,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2385905714,
                "count": 4038743,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4262219558,
                "variance": 0.1816651556
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527399.2897,
              2093214.017,
              2.174901907,
              -526864.6097,
              2093742.137,
              17.13490191
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527399.2896949487,
                    2093214.017342396,
                    2.174901906552366
                  ],
                  [
                    -527399.2896949487,
                    2093742.1373423962,
                    2.174901906552366
                  ],
                  [
                    -526864.6096949488,
                    2093742.1373423962,
                    17.134901906552365
                  ],
                  [
                    -526864.6096949488,
                    2093214.017342396,
                    17.134901906552365
                  ],
                  [
                    -527399.2896949487,
                    2093214.017342396,
                    2.174901906552366
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:30+00:00",
            "end_time": "2019-08-06T01:53:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0557.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.79456405963884,
              68.34261340604903,
              0.819608970566636
            ],
            [
              -166.79520748470551,
              68.34385447607875,
              0.819608970566636
            ],
            [
              -166.7840593236676,
              68.34467244277302,
              5.699608970566636
            ],
            [
              -166.7834164312153,
              68.34343132828565,
              5.699608970566636
            ],
            [
              -166.79456405963884,
              68.34261340604903,
              0.819608970566636
            ]
          ]
        ]
      },
      "bbox": [
        -166.7952075,
        68.34261341,
        0.8196089706,
        -166.7834164,
        68.34467244,
        5.699608971
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:50Z",
        "pc:count": 588273,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528563.0139,
            "count": 588273,
            "maximum": -528307.7654,
            "minimum": -528780.0654,
            "name": "X",
            "position": 0,
            "stddev": 131.7266654,
            "variance": 17351.91438
          },
          {
            "average": 2093468.661,
            "count": 588273,
            "maximum": 2093544.285,
            "minimum": 2093404.545,
            "name": "Y",
            "position": 1,
            "stddev": 27.65215794,
            "variance": 764.6418386
          },
          {
            "average": 3.199021352,
            "count": 588273,
            "maximum": 5.699608971,
            "minimum": 0.8196089706,
            "name": "Z",
            "position": 2,
            "stddev": 1.267644676,
            "variance": 1.606923025
          },
          {
            "average": 21841.26189,
            "count": 588273,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 6994.906757,
            "variance": 48928720.54
          },
          {
            "average": 1,
            "count": 588273,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 588273,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4921184552,
            "count": 588273,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999383023,
            "variance": 0.2499383061
          },
          {
            "average": 0.0005337657856,
            "count": 588273,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02309722465,
            "variance": 0.0005334817866
          },
          {
            "average": 2.044219266,
            "count": 588273,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.483079357,
            "variance": 6.165683093
          },
          {
            "average": -2.112386025,
            "count": 588273,
            "maximum": 12.22799969,
            "minimum": -15.93599987,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.328949279,
            "variance": 87.02929464
          },
          {
            "average": 0.5131002103,
            "count": 588273,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998287799,
            "variance": 0.2498288092
          },
          {
            "average": 222.1547088,
            "count": 588273,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 42.05405585,
            "variance": 1768.543614
          },
          {
            "average": 249105649.1,
            "count": 588273,
            "maximum": 249159610.6,
            "minimum": 249091605.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 27386.96147,
            "variance": 750045658.7
          },
          {
            "average": 0.5131002103,
            "count": 588273,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998287799,
            "variance": 0.2498288092
          },
          {
            "average": 0,
            "count": 588273,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 588273,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 588273,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.3081868452,
            "count": 588273,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4617446005,
            "variance": 0.2132080761
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528780.0654,
          2093404.545,
          0.8196089706,
          -528307.7654,
          2093544.285,
          5.699608971
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528780.0653846905,
                2093404.5453434102,
                0.819608970566636
              ],
              [
                -528780.0653846905,
                2093544.2853434104,
                0.819608970566636
              ],
              [
                -528307.7653846905,
                2093544.2853434104,
                5.699608970566636
              ],
              [
                -528307.7653846905,
                2093404.5453434102,
                5.699608970566636
              ],
              [
                -528780.0653846905,
                2093404.5453434102,
                0.819608970566636
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:50+00:00",
        "end_time": "2019-08-06T01:53:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0557.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0557.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0557.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0557.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7952075,
            68.34261341,
            0.8196089706,
            -166.7834164,
            68.34467244,
            5.699608971
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.79456405963884,
                  68.34261340604903,
                  0.819608970566636
                ],
                [
                  -166.79520748470551,
                  68.34385447607875,
                  0.819608970566636
                ],
                [
                  -166.7840593236676,
                  68.34467244277302,
                  5.699608970566636
                ],
                [
                  -166.7834164312153,
                  68.34343132828565,
                  5.699608970566636
                ],
                [
                  -166.79456405963884,
                  68.34261340604903,
                  0.819608970566636
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0557.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0557.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:50Z",
            "pc:count": 588273,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528563.0139,
                "count": 588273,
                "maximum": -528307.7654,
                "minimum": -528780.0654,
                "name": "X",
                "position": 0,
                "stddev": 131.7266654,
                "variance": 17351.91438
              },
              {
                "average": 2093468.661,
                "count": 588273,
                "maximum": 2093544.285,
                "minimum": 2093404.545,
                "name": "Y",
                "position": 1,
                "stddev": 27.65215794,
                "variance": 764.6418386
              },
              {
                "average": 3.199021352,
                "count": 588273,
                "maximum": 5.699608971,
                "minimum": 0.8196089706,
                "name": "Z",
                "position": 2,
                "stddev": 1.267644676,
                "variance": 1.606923025
              },
              {
                "average": 21841.26189,
                "count": 588273,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 6994.906757,
                "variance": 48928720.54
              },
              {
                "average": 1,
                "count": 588273,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 588273,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4921184552,
                "count": 588273,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999383023,
                "variance": 0.2499383061
              },
              {
                "average": 0.0005337657856,
                "count": 588273,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02309722465,
                "variance": 0.0005334817866
              },
              {
                "average": 2.044219266,
                "count": 588273,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.483079357,
                "variance": 6.165683093
              },
              {
                "average": -2.112386025,
                "count": 588273,
                "maximum": 12.22799969,
                "minimum": -15.93599987,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.328949279,
                "variance": 87.02929464
              },
              {
                "average": 0.5131002103,
                "count": 588273,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998287799,
                "variance": 0.2498288092
              },
              {
                "average": 222.1547088,
                "count": 588273,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 42.05405585,
                "variance": 1768.543614
              },
              {
                "average": 249105649.1,
                "count": 588273,
                "maximum": 249159610.6,
                "minimum": 249091605.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 27386.96147,
                "variance": 750045658.7
              },
              {
                "average": 0.5131002103,
                "count": 588273,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998287799,
                "variance": 0.2498288092
              },
              {
                "average": 0,
                "count": 588273,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 588273,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 588273,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.3081868452,
                "count": 588273,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4617446005,
                "variance": 0.2132080761
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528780.0654,
              2093404.545,
              0.8196089706,
              -528307.7654,
              2093544.285,
              5.699608971
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528780.0653846905,
                    2093404.5453434102,
                    0.819608970566636
                  ],
                  [
                    -528780.0653846905,
                    2093544.2853434104,
                    0.819608970566636
                  ],
                  [
                    -528307.7653846905,
                    2093544.2853434104,
                    5.699608970566636
                  ],
                  [
                    -528307.7653846905,
                    2093404.5453434102,
                    5.699608970566636
                  ],
                  [
                    -528780.0653846905,
                    2093404.5453434102,
                    0.819608970566636
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:50+00:00",
            "end_time": "2019-08-06T01:53:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0739.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.81648335680038,
              68.35127581919818,
              0.730298202899869
            ],
            [
              -166.81833755259757,
              68.35484456886962,
              0.730298202899869
            ],
            [
              -166.80629265010944,
              68.3557295847513,
              20.950298202899866
            ],
            [
              -166.80444010935142,
              68.35216069669791,
              20.950298202899866
            ],
            [
              -166.81648335680038,
              68.35127581919818,
              0.730298202899869
            ]
          ]
        ]
      },
      "bbox": [
        -166.8183376,
        68.35127582,
        0.7302982029,
        -166.8044401,
        68.35572958,
        20.9502982
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:06Z",
        "pc:count": 553356,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529162.9867,
            "count": 553356,
            "maximum": -528980.9909,
            "minimum": -529491.0909,
            "name": "X",
            "position": 0,
            "stddev": 111.326694,
            "variance": 12393.63279
          },
          {
            "average": 2094670.694,
            "count": 553356,
            "maximum": 2094920.585,
            "minimum": 2094518.745,
            "name": "Y",
            "position": 1,
            "stddev": 82.89816993,
            "variance": 6872.106578
          },
          {
            "average": 1.119150497,
            "count": 553356,
            "maximum": 20.9502982,
            "minimum": 0.7302982029,
            "name": "Z",
            "position": 2,
            "stddev": 0.1365597827,
            "variance": 0.01864857425
          },
          {
            "average": 12216.51585,
            "count": 553356,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 8855.155475,
            "variance": 78413778.48
          },
          {
            "average": 1.000019879,
            "count": 553356,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004458513712,
            "variance": 1.987834452e-05
          },
          {
            "average": 1.000039757,
            "count": 553356,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006305227888,
            "variance": 3.975589872e-05
          },
          {
            "average": 0.5230647178,
            "count": 553356,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4994681868,
            "variance": 0.2494684696
          },
          {
            "average": 0.0006090111971,
            "count": 553356,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02467065873,
            "variance": 0.0006086414024
          },
          {
            "average": 7.807548847,
            "count": 553356,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.177930238,
            "variance": 4.743380121
          },
          {
            "average": -3.327990599,
            "count": 553356,
            "maximum": 16.38599968,
            "minimum": -14.78999996,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 6.237929948,
            "variance": 38.91177004
          },
          {
            "average": 0.4982000737,
            "count": 553356,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499997212,
            "variance": 0.249997212
          },
          {
            "average": 204.3116836,
            "count": 553356,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 1.673574534,
            "variance": 2.800851719
          },
          {
            "average": 249092388.5,
            "count": 553356,
            "maximum": 249158546.1,
            "minimum": 249092111.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 1052.602971,
            "variance": 1107973.014
          },
          {
            "average": 0.4982000737,
            "count": 553356,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499997212,
            "variance": 0.249997212
          },
          {
            "average": 0,
            "count": 553356,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 553356,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 553356,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.01748422354,
            "count": 553356,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1310669924,
            "variance": 0.01717855651
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529491.0909,
          2094518.745,
          0.7302982029,
          -528980.9909,
          2094920.585,
          20.9502982
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529491.0909439449,
                2094518.7448708992,
                0.730298202899869
              ],
              [
                -529491.0909439449,
                2094920.584870899,
                0.730298202899869
              ],
              [
                -528980.9909439448,
                2094920.584870899,
                20.950298202899866
              ],
              [
                -528980.9909439448,
                2094518.7448708992,
                20.950298202899866
              ],
              [
                -529491.0909439449,
                2094518.7448708992,
                0.730298202899869
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:06+00:00",
        "end_time": "2019-08-06T02:01:51+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0739.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0739.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0739.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0739.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8183376,
            68.35127582,
            0.7302982029,
            -166.8044401,
            68.35572958,
            20.9502982
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.81648335680038,
                  68.35127581919818,
                  0.730298202899869
                ],
                [
                  -166.81833755259757,
                  68.35484456886962,
                  0.730298202899869
                ],
                [
                  -166.80629265010944,
                  68.3557295847513,
                  20.950298202899866
                ],
                [
                  -166.80444010935142,
                  68.35216069669791,
                  20.950298202899866
                ],
                [
                  -166.81648335680038,
                  68.35127581919818,
                  0.730298202899869
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0739.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0739.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:06Z",
            "pc:count": 553356,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529162.9867,
                "count": 553356,
                "maximum": -528980.9909,
                "minimum": -529491.0909,
                "name": "X",
                "position": 0,
                "stddev": 111.326694,
                "variance": 12393.63279
              },
              {
                "average": 2094670.694,
                "count": 553356,
                "maximum": 2094920.585,
                "minimum": 2094518.745,
                "name": "Y",
                "position": 1,
                "stddev": 82.89816993,
                "variance": 6872.106578
              },
              {
                "average": 1.119150497,
                "count": 553356,
                "maximum": 20.9502982,
                "minimum": 0.7302982029,
                "name": "Z",
                "position": 2,
                "stddev": 0.1365597827,
                "variance": 0.01864857425
              },
              {
                "average": 12216.51585,
                "count": 553356,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 8855.155475,
                "variance": 78413778.48
              },
              {
                "average": 1.000019879,
                "count": 553356,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004458513712,
                "variance": 1.987834452e-05
              },
              {
                "average": 1.000039757,
                "count": 553356,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006305227888,
                "variance": 3.975589872e-05
              },
              {
                "average": 0.5230647178,
                "count": 553356,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4994681868,
                "variance": 0.2494684696
              },
              {
                "average": 0.0006090111971,
                "count": 553356,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02467065873,
                "variance": 0.0006086414024
              },
              {
                "average": 7.807548847,
                "count": 553356,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.177930238,
                "variance": 4.743380121
              },
              {
                "average": -3.327990599,
                "count": 553356,
                "maximum": 16.38599968,
                "minimum": -14.78999996,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 6.237929948,
                "variance": 38.91177004
              },
              {
                "average": 0.4982000737,
                "count": 553356,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499997212,
                "variance": 0.249997212
              },
              {
                "average": 204.3116836,
                "count": 553356,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 1.673574534,
                "variance": 2.800851719
              },
              {
                "average": 249092388.5,
                "count": 553356,
                "maximum": 249158546.1,
                "minimum": 249092111.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 1052.602971,
                "variance": 1107973.014
              },
              {
                "average": 0.4982000737,
                "count": 553356,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499997212,
                "variance": 0.249997212
              },
              {
                "average": 0,
                "count": 553356,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 553356,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 553356,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.01748422354,
                "count": 553356,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1310669924,
                "variance": 0.01717855651
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529491.0909,
              2094518.745,
              0.7302982029,
              -528980.9909,
              2094920.585,
              20.9502982
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529491.0909439449,
                    2094518.7448708992,
                    0.730298202899869
                  ],
                  [
                    -529491.0909439449,
                    2094920.584870899,
                    0.730298202899869
                  ],
                  [
                    -528980.9909439448,
                    2094920.584870899,
                    20.950298202899866
                  ],
                  [
                    -528980.9909439448,
                    2094518.7448708992,
                    20.950298202899866
                  ],
                  [
                    -529491.0909439449,
                    2094518.7448708992,
                    0.730298202899869
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:06+00:00",
            "end_time": "2019-08-06T02:01:51+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0740.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.8057674012785,
              68.35130051165186,
              0.714365611282968
            ],
            [
              -166.80811956332292,
              68.35583140174383,
              0.714365611282968
            ],
            [
              -166.79550658265396,
              68.35675734534293,
              22.35436561128297
            ],
            [
              -166.79315662110474,
              68.35222627143503,
              22.35436561128297
            ],
            [
              -166.8057674012785,
              68.35130051165186,
              0.714365611282968
            ]
          ]
        ]
      },
      "bbox": [
        -166.8081196,
        68.35130051,
        0.7143656113,
        -166.7931566,
        68.35675735,
        22.35436561
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:13Z",
        "pc:count": 2229998,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528772.5759,
            "count": 2229998,
            "maximum": -528519.2396,
            "minimum": -529053.3596,
            "name": "X",
            "position": 0,
            "stddev": 128.7318805,
            "variance": 16571.89706
          },
          {
            "average": 2094644.279,
            "count": 2229998,
            "maximum": 2094946.181,
            "minimum": 2094436.021,
            "name": "Y",
            "position": 1,
            "stddev": 127.6260115,
            "variance": 16288.39882
          },
          {
            "average": 2.511405909,
            "count": 2229998,
            "maximum": 22.35436561,
            "minimum": 0.7143656113,
            "name": "Z",
            "position": 2,
            "stddev": 1.675840837,
            "variance": 2.80844251
          },
          {
            "average": 19110.81046,
            "count": 2229998,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 11501.09257,
            "variance": 132275130.4
          },
          {
            "average": 1.000000897,
            "count": 2229998,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.00094702766,
            "variance": 8.968613887e-07
          },
          {
            "average": 1.000001794,
            "count": 2229998,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00133929876,
            "variance": 1.793721169e-06
          },
          {
            "average": 0.5150269193,
            "count": 2229998,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4997742527,
            "variance": 0.2497743037
          },
          {
            "average": 0.000399103497,
            "count": 2229998,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01997359237,
            "variance": 0.0003989443923
          },
          {
            "average": 4.736901109,
            "count": 2229998,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.686371216,
            "variance": 13.58933274
          },
          {
            "average": -1.032753426,
            "count": 2229998,
            "maximum": 21.69000053,
            "minimum": -15.42000008,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.691666398,
            "variance": 75.54506477
          },
          {
            "average": 0.5099470941,
            "count": 2229998,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999011576,
            "variance": 0.2499011674
          },
          {
            "average": 214.6063853,
            "count": 2229998,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 30.21458208,
            "variance": 912.9209702
          },
          {
            "average": 249099310.4,
            "count": 2229998,
            "maximum": 249158553.3,
            "minimum": 249092120.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 20288.73857,
            "variance": 411632912.9
          },
          {
            "average": 0.5099470941,
            "count": 2229998,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999011576,
            "variance": 0.2499011674
          },
          {
            "average": 0,
            "count": 2229998,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2229998,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2229998,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.08183729313,
            "count": 2229998,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2741167348,
            "variance": 0.07513998428
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529053.3596,
          2094436.021,
          0.7143656113,
          -528519.2396,
          2094946.181,
          22.35436561
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529053.3595746878,
                2094436.0207003169,
                0.714365611282968
              ],
              [
                -529053.3595746878,
                2094946.180700317,
                0.714365611282968
              ],
              [
                -528519.2395746877,
                2094946.180700317,
                22.35436561128297
              ],
              [
                -528519.2395746877,
                2094436.0207003169,
                22.35436561128297
              ],
              [
                -529053.3595746878,
                2094436.0207003169,
                0.714365611282968
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:13+00:00",
        "end_time": "2019-08-06T02:02:00+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0740.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0740.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0740.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0740.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8081196,
            68.35130051,
            0.7143656113,
            -166.7931566,
            68.35675735,
            22.35436561
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.8057674012785,
                  68.35130051165186,
                  0.714365611282968
                ],
                [
                  -166.80811956332292,
                  68.35583140174383,
                  0.714365611282968
                ],
                [
                  -166.79550658265396,
                  68.35675734534293,
                  22.35436561128297
                ],
                [
                  -166.79315662110474,
                  68.35222627143503,
                  22.35436561128297
                ],
                [
                  -166.8057674012785,
                  68.35130051165186,
                  0.714365611282968
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0740.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0740.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:13Z",
            "pc:count": 2229998,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528772.5759,
                "count": 2229998,
                "maximum": -528519.2396,
                "minimum": -529053.3596,
                "name": "X",
                "position": 0,
                "stddev": 128.7318805,
                "variance": 16571.89706
              },
              {
                "average": 2094644.279,
                "count": 2229998,
                "maximum": 2094946.181,
                "minimum": 2094436.021,
                "name": "Y",
                "position": 1,
                "stddev": 127.6260115,
                "variance": 16288.39882
              },
              {
                "average": 2.511405909,
                "count": 2229998,
                "maximum": 22.35436561,
                "minimum": 0.7143656113,
                "name": "Z",
                "position": 2,
                "stddev": 1.675840837,
                "variance": 2.80844251
              },
              {
                "average": 19110.81046,
                "count": 2229998,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 11501.09257,
                "variance": 132275130.4
              },
              {
                "average": 1.000000897,
                "count": 2229998,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.00094702766,
                "variance": 8.968613887e-07
              },
              {
                "average": 1.000001794,
                "count": 2229998,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00133929876,
                "variance": 1.793721169e-06
              },
              {
                "average": 0.5150269193,
                "count": 2229998,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4997742527,
                "variance": 0.2497743037
              },
              {
                "average": 0.000399103497,
                "count": 2229998,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01997359237,
                "variance": 0.0003989443923
              },
              {
                "average": 4.736901109,
                "count": 2229998,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.686371216,
                "variance": 13.58933274
              },
              {
                "average": -1.032753426,
                "count": 2229998,
                "maximum": 21.69000053,
                "minimum": -15.42000008,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.691666398,
                "variance": 75.54506477
              },
              {
                "average": 0.5099470941,
                "count": 2229998,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999011576,
                "variance": 0.2499011674
              },
              {
                "average": 214.6063853,
                "count": 2229998,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 30.21458208,
                "variance": 912.9209702
              },
              {
                "average": 249099310.4,
                "count": 2229998,
                "maximum": 249158553.3,
                "minimum": 249092120.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 20288.73857,
                "variance": 411632912.9
              },
              {
                "average": 0.5099470941,
                "count": 2229998,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999011576,
                "variance": 0.2499011674
              },
              {
                "average": 0,
                "count": 2229998,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2229998,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2229998,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.08183729313,
                "count": 2229998,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2741167348,
                "variance": 0.07513998428
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529053.3596,
              2094436.021,
              0.7143656113,
              -528519.2396,
              2094946.181,
              22.35436561
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529053.3595746878,
                    2094436.0207003169,
                    0.714365611282968
                  ],
                  [
                    -529053.3595746878,
                    2094946.180700317,
                    0.714365611282968
                  ],
                  [
                    -528519.2395746877,
                    2094946.180700317,
                    22.35436561128297
                  ],
                  [
                    -528519.2395746877,
                    2094436.0207003169,
                    22.35436561128297
                  ],
                  [
                    -529053.3595746878,
                    2094436.0207003169,
                    0.714365611282968
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:13+00:00",
            "end_time": "2019-08-06T02:02:00+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0625.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.78329358929258,
              68.34320656561343,
              0.193571371727558
            ],
            [
              -166.7857239342706,
              68.34789784159081,
              0.193571371727558
            ],
            [
              -166.77309854761606,
              68.34882329936104,
              85.29357137172757
            ],
            [
              -166.77067048292292,
              68.3441318332395,
              85.29357137172757
            ],
            [
              -166.78329358929258,
              68.34320656561343,
              0.193571371727558
            ]
          ]
        ]
      },
      "bbox": [
        -166.7857239,
        68.34320657,
        0.1935713717,
        -166.7706705,
        68.3488233,
        85.29357137
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:44Z",
        "pc:count": 4363660,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528036.3422,
            "count": 4363660,
            "maximum": -527772.7232,
            "minimum": -528307.5032,
            "name": "X",
            "position": 0,
            "stddev": 130.4588337,
            "variance": 17019.5073
          },
          {
            "average": 2093655.674,
            "count": 4363660,
            "maximum": 2093907.388,
            "minimum": 2093379.188,
            "name": "Y",
            "position": 1,
            "stddev": 126.4968589,
            "variance": 16001.45531
          },
          {
            "average": 5.177463712,
            "count": 4363660,
            "maximum": 85.29357137,
            "minimum": 0.1935713717,
            "name": "Z",
            "position": 2,
            "stddev": 0.5491814897,
            "variance": 0.3016003086
          },
          {
            "average": 29222.11569,
            "count": 4363660,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7830.878635,
            "variance": 61322660.19
          },
          {
            "average": 1.001750595,
            "count": 4363660,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04202763463,
            "variance": 0.001766322072
          },
          {
            "average": 1.003501419,
            "count": 4363660,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05954438772,
            "variance": 0.003545534109
          },
          {
            "average": 0.5031565246,
            "count": 4363660,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999900935,
            "variance": 0.2499900936
          },
          {
            "average": 0.000403560314,
            "count": 4363660,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02008475904,
            "variance": 0.0004033975456
          },
          {
            "average": 1.245187068,
            "count": 4363660,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4569654861,
            "variance": 0.2088174554
          },
          {
            "average": -2.557708066,
            "count": 4363660,
            "maximum": 16.78800011,
            "minimum": -21.29999924,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63936119,
            "variance": 113.1960066
          },
          {
            "average": 0.4782904718,
            "count": 4363660,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995285313,
            "variance": 0.2495287536
          },
          {
            "average": 229.0915976,
            "count": 4363660,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.29368291,
            "variance": 2051.517712
          },
          {
            "average": 249109844.4,
            "count": 4363660,
            "maximum": 249159604.2,
            "minimum": 249091597.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29745.25063,
            "variance": 884779934.8
          },
          {
            "average": 0.4782904718,
            "count": 4363660,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995285313,
            "variance": 0.2495287536
          },
          {
            "average": 0,
            "count": 4363660,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4363660,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4363660,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2249412191,
            "count": 4363660,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4175436588,
            "variance": 0.174342707
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528307.5032,
          2093379.188,
          0.1935713717,
          -527772.7232,
          2093907.388,
          85.29357137
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528307.5032472732,
                2093379.1876527737,
                0.193571371727558
              ],
              [
                -528307.5032472732,
                2093907.3876527739,
                0.193571371727558
              ],
              [
                -527772.7232472731,
                2093907.3876527739,
                85.29357137172757
              ],
              [
                -527772.7232472731,
                2093379.1876527737,
                85.29357137172757
              ],
              [
                -528307.5032472732,
                2093379.1876527737,
                0.193571371727558
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:44+00:00",
        "end_time": "2019-08-06T01:53:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0625.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0625.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0625.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0625.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7857239,
            68.34320657,
            0.1935713717,
            -166.7706705,
            68.3488233,
            85.29357137
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.78329358929258,
                  68.34320656561343,
                  0.193571371727558
                ],
                [
                  -166.7857239342706,
                  68.34789784159081,
                  0.193571371727558
                ],
                [
                  -166.77309854761606,
                  68.34882329936104,
                  85.29357137172757
                ],
                [
                  -166.77067048292292,
                  68.3441318332395,
                  85.29357137172757
                ],
                [
                  -166.78329358929258,
                  68.34320656561343,
                  0.193571371727558
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0625.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0625.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:44Z",
            "pc:count": 4363660,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528036.3422,
                "count": 4363660,
                "maximum": -527772.7232,
                "minimum": -528307.5032,
                "name": "X",
                "position": 0,
                "stddev": 130.4588337,
                "variance": 17019.5073
              },
              {
                "average": 2093655.674,
                "count": 4363660,
                "maximum": 2093907.388,
                "minimum": 2093379.188,
                "name": "Y",
                "position": 1,
                "stddev": 126.4968589,
                "variance": 16001.45531
              },
              {
                "average": 5.177463712,
                "count": 4363660,
                "maximum": 85.29357137,
                "minimum": 0.1935713717,
                "name": "Z",
                "position": 2,
                "stddev": 0.5491814897,
                "variance": 0.3016003086
              },
              {
                "average": 29222.11569,
                "count": 4363660,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7830.878635,
                "variance": 61322660.19
              },
              {
                "average": 1.001750595,
                "count": 4363660,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04202763463,
                "variance": 0.001766322072
              },
              {
                "average": 1.003501419,
                "count": 4363660,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05954438772,
                "variance": 0.003545534109
              },
              {
                "average": 0.5031565246,
                "count": 4363660,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999900935,
                "variance": 0.2499900936
              },
              {
                "average": 0.000403560314,
                "count": 4363660,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02008475904,
                "variance": 0.0004033975456
              },
              {
                "average": 1.245187068,
                "count": 4363660,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4569654861,
                "variance": 0.2088174554
              },
              {
                "average": -2.557708066,
                "count": 4363660,
                "maximum": 16.78800011,
                "minimum": -21.29999924,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63936119,
                "variance": 113.1960066
              },
              {
                "average": 0.4782904718,
                "count": 4363660,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995285313,
                "variance": 0.2495287536
              },
              {
                "average": 229.0915976,
                "count": 4363660,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.29368291,
                "variance": 2051.517712
              },
              {
                "average": 249109844.4,
                "count": 4363660,
                "maximum": 249159604.2,
                "minimum": 249091597.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29745.25063,
                "variance": 884779934.8
              },
              {
                "average": 0.4782904718,
                "count": 4363660,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995285313,
                "variance": 0.2495287536
              },
              {
                "average": 0,
                "count": 4363660,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4363660,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4363660,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2249412191,
                "count": 4363660,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4175436588,
                "variance": 0.174342707
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528307.5032,
              2093379.188,
              0.1935713717,
              -527772.7232,
              2093907.388,
              85.29357137
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528307.5032472732,
                    2093379.1876527737,
                    0.193571371727558
                  ],
                  [
                    -528307.5032472732,
                    2093907.3876527739,
                    0.193571371727558
                  ],
                  [
                    -527772.7232472731,
                    2093907.3876527739,
                    85.29357137172757
                  ],
                  [
                    -527772.7232472731,
                    2093379.1876527737,
                    85.29357137172757
                  ],
                  [
                    -528307.5032472732,
                    2093379.1876527737,
                    0.193571371727558
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:44+00:00",
            "end_time": "2019-08-06T01:53:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0741.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.79467813488844,
              68.35135231845257,
              -10.889409686094535
            ],
            [
              -166.79711067352662,
              68.35604216102544,
              -10.889409686094535
            ],
            [
              -166.78448395352316,
              68.35696828846864,
              17.690590313905467
            ],
            [
              -166.7820536952227,
              68.35227825559278,
              17.690590313905467
            ],
            [
              -166.79467813488844,
              68.35135231845257,
              -10.889409686094535
            ]
          ]
        ]
      },
      "bbox": [
        -166.7971107,
        68.35135232,
        -10.88940969,
        -166.7820537,
        68.35696829,
        17.69059031
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:19Z",
        "pc:count": 3441013,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528325.1179,
            "count": 3441013,
            "maximum": -528065.1299,
            "minimum": -528599.8099,
            "name": "X",
            "position": 0,
            "stddev": 136.4025578,
            "variance": 18605.65778
          },
          {
            "average": 2094584.506,
            "count": 3441013,
            "maximum": 2094881.377,
            "minimum": 2094353.337,
            "name": "Y",
            "position": 1,
            "stddev": 115.9541565,
            "variance": 13445.36642
          },
          {
            "average": 4.266048425,
            "count": 3441013,
            "maximum": 17.69059031,
            "minimum": -10.88940969,
            "name": "Z",
            "position": 2,
            "stddev": 1.23492005,
            "variance": 1.52502753
          },
          {
            "average": 33845.8645,
            "count": 3441013,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 11704.47035,
            "variance": 136994626.1
          },
          {
            "average": 1.000003197,
            "count": 3441013,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.001787938412,
            "variance": 3.196723765e-06
          },
          {
            "average": 1.000006393,
            "count": 3441013,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.002528522709,
            "variance": 6.393427092e-06
          },
          {
            "average": 0.5063134025,
            "count": 3441013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499960212,
            "variance": 0.2499602136
          },
          {
            "average": 0.0003353663587,
            "count": 3441013,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01830994226,
            "variance": 0.0003352539855
          },
          {
            "average": 1.893420339,
            "count": 3441013,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.115138078,
            "variance": 4.473809089
          },
          {
            "average": 2.143935401,
            "count": 3441013,
            "maximum": 21.49200058,
            "minimum": -15.92399979,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.80600565,
            "variance": 116.7697581
          },
          {
            "average": 0.5264025448,
            "count": 3441013,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4993024916,
            "variance": 0.2493029781
          },
          {
            "average": 231.4188098,
            "count": 3441013,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.96199831,
            "variance": 1932.657296
          },
          {
            "average": 249110641.4,
            "count": 3441013,
            "maximum": 249158559.9,
            "minimum": 249092129.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29579.60036,
            "variance": 874952757.7
          },
          {
            "average": 0.5264025448,
            "count": 3441013,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4993024916,
            "variance": 0.2493029781
          },
          {
            "average": 0,
            "count": 3441013,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3441013,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3441013,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1747787643,
            "count": 3441013,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3797778163,
            "variance": 0.1442311897
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528599.8099,
          2094353.337,
          -10.88940969,
          -528065.1299,
          2094881.377,
          17.69059031
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528599.8098838121,
                2094353.33678874,
                -10.889409686094535
              ],
              [
                -528599.8098838121,
                2094881.37678874,
                -10.889409686094535
              ],
              [
                -528065.1298838122,
                2094881.37678874,
                17.690590313905467
              ],
              [
                -528065.1298838122,
                2094353.33678874,
                17.690590313905467
              ],
              [
                -528599.8098838121,
                2094353.33678874,
                -10.889409686094535
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:19+00:00",
        "end_time": "2019-08-06T02:02:09+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0741.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0741.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0741.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0741.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7971107,
            68.35135232,
            -10.88940969,
            -166.7820537,
            68.35696829,
            17.69059031
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.79467813488844,
                  68.35135231845257,
                  -10.889409686094535
                ],
                [
                  -166.79711067352662,
                  68.35604216102544,
                  -10.889409686094535
                ],
                [
                  -166.78448395352316,
                  68.35696828846864,
                  17.690590313905467
                ],
                [
                  -166.7820536952227,
                  68.35227825559278,
                  17.690590313905467
                ],
                [
                  -166.79467813488844,
                  68.35135231845257,
                  -10.889409686094535
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0741.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0741.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:19Z",
            "pc:count": 3441013,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528325.1179,
                "count": 3441013,
                "maximum": -528065.1299,
                "minimum": -528599.8099,
                "name": "X",
                "position": 0,
                "stddev": 136.4025578,
                "variance": 18605.65778
              },
              {
                "average": 2094584.506,
                "count": 3441013,
                "maximum": 2094881.377,
                "minimum": 2094353.337,
                "name": "Y",
                "position": 1,
                "stddev": 115.9541565,
                "variance": 13445.36642
              },
              {
                "average": 4.266048425,
                "count": 3441013,
                "maximum": 17.69059031,
                "minimum": -10.88940969,
                "name": "Z",
                "position": 2,
                "stddev": 1.23492005,
                "variance": 1.52502753
              },
              {
                "average": 33845.8645,
                "count": 3441013,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 11704.47035,
                "variance": 136994626.1
              },
              {
                "average": 1.000003197,
                "count": 3441013,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.001787938412,
                "variance": 3.196723765e-06
              },
              {
                "average": 1.000006393,
                "count": 3441013,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.002528522709,
                "variance": 6.393427092e-06
              },
              {
                "average": 0.5063134025,
                "count": 3441013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499960212,
                "variance": 0.2499602136
              },
              {
                "average": 0.0003353663587,
                "count": 3441013,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01830994226,
                "variance": 0.0003352539855
              },
              {
                "average": 1.893420339,
                "count": 3441013,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.115138078,
                "variance": 4.473809089
              },
              {
                "average": 2.143935401,
                "count": 3441013,
                "maximum": 21.49200058,
                "minimum": -15.92399979,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.80600565,
                "variance": 116.7697581
              },
              {
                "average": 0.5264025448,
                "count": 3441013,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4993024916,
                "variance": 0.2493029781
              },
              {
                "average": 231.4188098,
                "count": 3441013,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.96199831,
                "variance": 1932.657296
              },
              {
                "average": 249110641.4,
                "count": 3441013,
                "maximum": 249158559.9,
                "minimum": 249092129.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29579.60036,
                "variance": 874952757.7
              },
              {
                "average": 0.5264025448,
                "count": 3441013,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4993024916,
                "variance": 0.2493029781
              },
              {
                "average": 0,
                "count": 3441013,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3441013,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3441013,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1747787643,
                "count": 3441013,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3797778163,
                "variance": 0.1442311897
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528599.8099,
              2094353.337,
              -10.88940969,
              -528065.1299,
              2094881.377,
              17.69059031
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528599.8098838121,
                    2094353.33678874,
                    -10.889409686094535
                  ],
                  [
                    -528599.8098838121,
                    2094881.37678874,
                    -10.889409686094535
                  ],
                  [
                    -528065.1298838122,
                    2094881.37678874,
                    17.690590313905467
                  ],
                  [
                    -528065.1298838122,
                    2094353.33678874,
                    17.690590313905467
                  ],
                  [
                    -528599.8098838121,
                    2094353.33678874,
                    -10.889409686094535
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:19+00:00",
            "end_time": "2019-08-06T02:02:09+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0742.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.78357439758184,
              68.35140520045503,
              2.589985792795729
            ],
            [
              -166.7860055930607,
              68.35609661800906,
              2.589985792795729
            ],
            [
              -166.77337796179074,
              68.35702198610397,
              6.449985792795728
            ],
            [
              -166.7709490477447,
              68.35233037833866,
              6.449985792795728
            ],
            [
              -166.78357439758184,
              68.35140520045503,
              2.589985792795729
            ]
          ]
        ]
      },
      "bbox": [
        -166.7860056,
        68.3514052,
        2.589985793,
        -166.770949,
        68.35702199,
        6.449985793
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:26Z",
        "pc:count": 3939783,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527877.8609,
            "count": 3939783,
            "maximum": -527610.9341,
            "minimum": -528145.6341,
            "name": "X",
            "position": 0,
            "stddev": 131.7904863,
            "variance": 17368.73227
          },
          {
            "average": 2094522.515,
            "count": 3939783,
            "maximum": 2094798.93,
            "minimum": 2094270.73,
            "name": "Y",
            "position": 1,
            "stddev": 125.4632031,
            "variance": 15741.01534
          },
          {
            "average": 4.748345639,
            "count": 3939783,
            "maximum": 6.449985793,
            "minimum": 2.589985793,
            "name": "Z",
            "position": 2,
            "stddev": 0.3114264487,
            "variance": 0.09698643292
          },
          {
            "average": 41074.26128,
            "count": 3939783,
            "maximum": 65535,
            "minimum": 4228,
            "name": "Intensity",
            "position": 3,
            "stddev": 7451.972063,
            "variance": 55531887.63
          },
          {
            "average": 1,
            "count": 3939783,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3939783,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5022104009,
            "count": 3939783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999951776,
            "variance": 0.2499951776
          },
          {
            "average": 0.0003010318081,
            "count": 3939783,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01734765876,
            "variance": 0.0003009412643
          },
          {
            "average": 1.259839692,
            "count": 3939783,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4394179014,
            "variance": 0.1930880921
          },
          {
            "average": 3.53614556,
            "count": 3939783,
            "maximum": 21.58799934,
            "minimum": -15.84000015,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.03641643,
            "variance": 121.8024876
          },
          {
            "average": 0.5240760722,
            "count": 3939783,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994200697,
            "variance": 0.2494204061
          },
          {
            "average": 235.9625393,
            "count": 3939783,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 46.04490449,
            "variance": 2120.133229
          },
          {
            "average": 249113747.7,
            "count": 3939783,
            "maximum": 249158566.7,
            "minimum": 249092135.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30951.69259,
            "variance": 958007274.1
          },
          {
            "average": 0.5240760722,
            "count": 3939783,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994200697,
            "variance": 0.2494204061
          },
          {
            "average": 0,
            "count": 3939783,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3939783,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3939783,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1850015597,
            "count": 3939783,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3882988809,
            "variance": 0.1507760209
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528145.6341,
          2094270.73,
          2.589985793,
          -527610.9341,
          2094798.93,
          6.449985793
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528145.6341456498,
                2094270.730336668,
                2.589985792795729
              ],
              [
                -528145.6341456498,
                2094798.9303366682,
                2.589985792795729
              ],
              [
                -527610.9341456499,
                2094798.9303366682,
                6.449985792795728
              ],
              [
                -527610.9341456499,
                2094270.730336668,
                6.449985792795728
              ],
              [
                -528145.6341456498,
                2094270.730336668,
                2.589985792795729
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:26+00:00",
        "end_time": "2019-08-06T02:02:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0742.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0742.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0742.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0742.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7860056,
            68.3514052,
            2.589985793,
            -166.770949,
            68.35702199,
            6.449985793
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.78357439758184,
                  68.35140520045503,
                  2.589985792795729
                ],
                [
                  -166.7860055930607,
                  68.35609661800906,
                  2.589985792795729
                ],
                [
                  -166.77337796179074,
                  68.35702198610397,
                  6.449985792795728
                ],
                [
                  -166.7709490477447,
                  68.35233037833866,
                  6.449985792795728
                ],
                [
                  -166.78357439758184,
                  68.35140520045503,
                  2.589985792795729
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0742.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0742.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:26Z",
            "pc:count": 3939783,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527877.8609,
                "count": 3939783,
                "maximum": -527610.9341,
                "minimum": -528145.6341,
                "name": "X",
                "position": 0,
                "stddev": 131.7904863,
                "variance": 17368.73227
              },
              {
                "average": 2094522.515,
                "count": 3939783,
                "maximum": 2094798.93,
                "minimum": 2094270.73,
                "name": "Y",
                "position": 1,
                "stddev": 125.4632031,
                "variance": 15741.01534
              },
              {
                "average": 4.748345639,
                "count": 3939783,
                "maximum": 6.449985793,
                "minimum": 2.589985793,
                "name": "Z",
                "position": 2,
                "stddev": 0.3114264487,
                "variance": 0.09698643292
              },
              {
                "average": 41074.26128,
                "count": 3939783,
                "maximum": 65535,
                "minimum": 4228,
                "name": "Intensity",
                "position": 3,
                "stddev": 7451.972063,
                "variance": 55531887.63
              },
              {
                "average": 1,
                "count": 3939783,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3939783,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5022104009,
                "count": 3939783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999951776,
                "variance": 0.2499951776
              },
              {
                "average": 0.0003010318081,
                "count": 3939783,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01734765876,
                "variance": 0.0003009412643
              },
              {
                "average": 1.259839692,
                "count": 3939783,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4394179014,
                "variance": 0.1930880921
              },
              {
                "average": 3.53614556,
                "count": 3939783,
                "maximum": 21.58799934,
                "minimum": -15.84000015,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.03641643,
                "variance": 121.8024876
              },
              {
                "average": 0.5240760722,
                "count": 3939783,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994200697,
                "variance": 0.2494204061
              },
              {
                "average": 235.9625393,
                "count": 3939783,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 46.04490449,
                "variance": 2120.133229
              },
              {
                "average": 249113747.7,
                "count": 3939783,
                "maximum": 249158566.7,
                "minimum": 249092135.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30951.69259,
                "variance": 958007274.1
              },
              {
                "average": 0.5240760722,
                "count": 3939783,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994200697,
                "variance": 0.2494204061
              },
              {
                "average": 0,
                "count": 3939783,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3939783,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3939783,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1850015597,
                "count": 3939783,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3882988809,
                "variance": 0.1507760209
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528145.6341,
              2094270.73,
              2.589985793,
              -527610.9341,
              2094798.93,
              6.449985793
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528145.6341456498,
                    2094270.730336668,
                    2.589985792795729
                  ],
                  [
                    -528145.6341456498,
                    2094798.9303366682,
                    2.589985792795729
                  ],
                  [
                    -527610.9341456499,
                    2094798.9303366682,
                    6.449985792795728
                  ],
                  [
                    -527610.9341456499,
                    2094270.730336668,
                    6.449985792795728
                  ],
                  [
                    -528145.6341456498,
                    2094270.730336668,
                    2.589985792795729
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:26+00:00",
            "end_time": "2019-08-06T02:02:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0686.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.805629934134,
              68.34720015902283,
              0.740372193660475
            ],
            [
              -166.80806458548372,
              68.35189066508786,
              0.740372193660475
            ],
            [
              -166.79544178665356,
              68.35281745737558,
              10.740372193660475
            ],
            [
              -166.79300941475455,
              68.34812676088447,
              10.740372193660475
            ],
            [
              -166.805629934134,
              68.34720015902283,
              0.740372193660475
            ]
          ]
        ]
      },
      "bbox": [
        -166.8080646,
        68.34720016,
        0.7403721937,
        -166.7930094,
        68.35281746,
        10.74037219
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:56Z",
        "pc:count": 4403758,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528872.4768,
            "count": 4403758,
            "maximum": -528599.9651,
            "minimum": -529134.5851,
            "name": "X",
            "position": 0,
            "stddev": 132.9728211,
            "variance": 17681.77115
          },
          {
            "average": 2094243.318,
            "count": 4403758,
            "maximum": 2094518.331,
            "minimum": 2093990.191,
            "name": "Y",
            "position": 1,
            "stddev": 130.4316972,
            "variance": 17012.42765
          },
          {
            "average": 4.64765456,
            "count": 4403758,
            "maximum": 10.74037219,
            "minimum": 0.7403721937,
            "name": "Z",
            "position": 2,
            "stddev": 0.5698235987,
            "variance": 0.3246989337
          },
          {
            "average": 39555.61134,
            "count": 4403758,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 9452.502859,
            "variance": 89349810.29
          },
          {
            "average": 1.000028839,
            "count": 4403758,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.005412239625,
            "variance": 2.929233776e-05
          },
          {
            "average": 1.000057678,
            "count": 4403758,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.007683564915,
            "variance": 5.90371698e-05
          },
          {
            "average": 0.5000286119,
            "count": 4403758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.500000056,
            "variance": 0.250000056
          },
          {
            "average": 0.0004096501216,
            "count": 4403758,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02023567151,
            "variance": 0.0004094824013
          },
          {
            "average": 1.25281589,
            "count": 4403758,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4696839245,
            "variance": 0.2206029889
          },
          {
            "average": -2.580492222,
            "count": 4403758,
            "maximum": 16.30200005,
            "minimum": -21.04199982,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.56862703,
            "variance": 111.6958773
          },
          {
            "average": 0.4725098427,
            "count": 4403758,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499243776,
            "variance": 0.2492443479
          },
          {
            "average": 228.6063353,
            "count": 4403758,
            "maximum": 305,
            "minimum": 202,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.61989688,
            "variance": 1902.695404
          },
          {
            "average": 249109021.9,
            "count": 4403758,
            "maximum": 249159616.9,
            "minimum": 249091977.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28979.70675,
            "variance": 839823403
          },
          {
            "average": 0.4725098427,
            "count": 4403758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499243776,
            "variance": 0.2492443479
          },
          {
            "average": 0,
            "count": 4403758,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4403758,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4403758,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2383836714,
            "count": 4403758,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4260949869,
            "variance": 0.1815569378
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529134.5851,
          2093990.191,
          0.7403721937,
          -528599.9651,
          2094518.331,
          10.74037219
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529134.5851396739,
                2093990.190989567,
                0.740372193660475
              ],
              [
                -529134.5851396739,
                2094518.330989567,
                0.740372193660475
              ],
              [
                -528599.9651396738,
                2094518.330989567,
                10.740372193660475
              ],
              [
                -528599.9651396738,
                2093990.190989567,
                10.740372193660475
              ],
              [
                -529134.5851396739,
                2093990.190989567,
                0.740372193660475
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:56+00:00",
        "end_time": "2019-08-06T01:59:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0686.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0686.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0686.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0686.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8080646,
            68.34720016,
            0.7403721937,
            -166.7930094,
            68.35281746,
            10.74037219
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.805629934134,
                  68.34720015902283,
                  0.740372193660475
                ],
                [
                  -166.80806458548372,
                  68.35189066508786,
                  0.740372193660475
                ],
                [
                  -166.79544178665356,
                  68.35281745737558,
                  10.740372193660475
                ],
                [
                  -166.79300941475455,
                  68.34812676088447,
                  10.740372193660475
                ],
                [
                  -166.805629934134,
                  68.34720015902283,
                  0.740372193660475
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0686.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0686.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:56Z",
            "pc:count": 4403758,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528872.4768,
                "count": 4403758,
                "maximum": -528599.9651,
                "minimum": -529134.5851,
                "name": "X",
                "position": 0,
                "stddev": 132.9728211,
                "variance": 17681.77115
              },
              {
                "average": 2094243.318,
                "count": 4403758,
                "maximum": 2094518.331,
                "minimum": 2093990.191,
                "name": "Y",
                "position": 1,
                "stddev": 130.4316972,
                "variance": 17012.42765
              },
              {
                "average": 4.64765456,
                "count": 4403758,
                "maximum": 10.74037219,
                "minimum": 0.7403721937,
                "name": "Z",
                "position": 2,
                "stddev": 0.5698235987,
                "variance": 0.3246989337
              },
              {
                "average": 39555.61134,
                "count": 4403758,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 9452.502859,
                "variance": 89349810.29
              },
              {
                "average": 1.000028839,
                "count": 4403758,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.005412239625,
                "variance": 2.929233776e-05
              },
              {
                "average": 1.000057678,
                "count": 4403758,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.007683564915,
                "variance": 5.90371698e-05
              },
              {
                "average": 0.5000286119,
                "count": 4403758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.500000056,
                "variance": 0.250000056
              },
              {
                "average": 0.0004096501216,
                "count": 4403758,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02023567151,
                "variance": 0.0004094824013
              },
              {
                "average": 1.25281589,
                "count": 4403758,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4696839245,
                "variance": 0.2206029889
              },
              {
                "average": -2.580492222,
                "count": 4403758,
                "maximum": 16.30200005,
                "minimum": -21.04199982,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.56862703,
                "variance": 111.6958773
              },
              {
                "average": 0.4725098427,
                "count": 4403758,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499243776,
                "variance": 0.2492443479
              },
              {
                "average": 228.6063353,
                "count": 4403758,
                "maximum": 305,
                "minimum": 202,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.61989688,
                "variance": 1902.695404
              },
              {
                "average": 249109021.9,
                "count": 4403758,
                "maximum": 249159616.9,
                "minimum": 249091977.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28979.70675,
                "variance": 839823403
              },
              {
                "average": 0.4725098427,
                "count": 4403758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499243776,
                "variance": 0.2492443479
              },
              {
                "average": 0,
                "count": 4403758,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4403758,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4403758,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2383836714,
                "count": 4403758,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4260949869,
                "variance": 0.1815569378
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529134.5851,
              2093990.191,
              0.7403721937,
              -528599.9651,
              2094518.331,
              10.74037219
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529134.5851396739,
                    2093990.190989567,
                    0.740372193660475
                  ],
                  [
                    -529134.5851396739,
                    2094518.330989567,
                    0.740372193660475
                  ],
                  [
                    -528599.9651396738,
                    2094518.330989567,
                    10.740372193660475
                  ],
                  [
                    -528599.9651396738,
                    2093990.190989567,
                    10.740372193660475
                  ],
                  [
                    -529134.5851396739,
                    2093990.190989567,
                    0.740372193660475
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:56+00:00",
            "end_time": "2019-08-06T01:59:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0743.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.772477812624,
              68.35145809041981,
              3.05773489617915
            ],
            [
              -166.77490564107367,
              68.3561471746357,
              3.05773489617915
            ],
            [
              -166.76227237742086,
              68.35707212931085,
              6.91773489617915
            ],
            [
              -166.75984683045104,
              68.35238285506267,
              6.91773489617915
            ],
            [
              -166.772477812624,
              68.35145809041981,
              3.05773489617915
            ]
          ]
        ]
      },
      "bbox": [
        -166.7749056,
        68.35145809,
        3.057734896,
        -166.7598468,
        68.35707213,
        6.917734896
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:34Z",
        "pc:count": 4038577,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527425.4748,
            "count": 4038577,
            "maximum": -527156.8172,
            "minimum": -527691.7372,
            "name": "X",
            "position": 0,
            "stddev": 133.1120324,
            "variance": 17718.81317
          },
          {
            "average": 2094441.071,
            "count": 4038577,
            "maximum": 2094716.178,
            "minimum": 2094188.258,
            "name": "Y",
            "position": 1,
            "stddev": 123.1678302,
            "variance": 15170.31439
          },
          {
            "average": 4.645618071,
            "count": 4038577,
            "maximum": 6.917734896,
            "minimum": 3.057734896,
            "name": "Z",
            "position": 2,
            "stddev": 0.3647034088,
            "variance": 0.1330085764
          },
          {
            "average": 42031.42381,
            "count": 4038577,
            "maximum": 65535,
            "minimum": 11383,
            "name": "Intensity",
            "position": 3,
            "stddev": 7230.640861,
            "variance": 52282167.26
          },
          {
            "average": 1,
            "count": 4038577,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 4038577,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5002120797,
            "count": 4038577,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000169,
            "variance": 0.2500000169
          },
          {
            "average": 0.0002956486901,
            "count": 4038577,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01719189795,
            "variance": 0.0002955613552
          },
          {
            "average": 1.253933749,
            "count": 4038577,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4360786281,
            "variance": 0.1901645699
          },
          {
            "average": 3.863315954,
            "count": 4038577,
            "maximum": 21.55200005,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.72756782,
            "variance": 115.0807113
          },
          {
            "average": 0.5190206848,
            "count": 4038577,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996381444,
            "variance": 0.2496382754
          },
          {
            "average": 234.6396092,
            "count": 4038577,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.62665131,
            "variance": 2081.79131
          },
          {
            "average": 249112889,
            "count": 4038577,
            "maximum": 249158574,
            "minimum": 249092144,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30629.94308,
            "variance": 938193413
          },
          {
            "average": 0.5190206848,
            "count": 4038577,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996381444,
            "variance": 0.2496382754
          },
          {
            "average": 0,
            "count": 4038577,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4038577,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4038577,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1915409809,
            "count": 4038577,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3935137506,
            "variance": 0.1548530719
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527691.7372,
          2094188.258,
          3.057734896,
          -527156.8172,
          2094716.178,
          6.917734896
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527691.7372385082,
                2094188.25770343,
                3.05773489617915
              ],
              [
                -527691.7372385082,
                2094716.17770343,
                3.05773489617915
              ],
              [
                -527156.8172385083,
                2094716.17770343,
                6.91773489617915
              ],
              [
                -527156.8172385083,
                2094188.25770343,
                6.91773489617915
              ],
              [
                -527691.7372385082,
                2094188.25770343,
                3.05773489617915
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:34+00:00",
        "end_time": "2019-08-06T02:02:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0743.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0743.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0743.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0743.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7749056,
            68.35145809,
            3.057734896,
            -166.7598468,
            68.35707213,
            6.917734896
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.772477812624,
                  68.35145809041981,
                  3.05773489617915
                ],
                [
                  -166.77490564107367,
                  68.3561471746357,
                  3.05773489617915
                ],
                [
                  -166.76227237742086,
                  68.35707212931085,
                  6.91773489617915
                ],
                [
                  -166.75984683045104,
                  68.35238285506267,
                  6.91773489617915
                ],
                [
                  -166.772477812624,
                  68.35145809041981,
                  3.05773489617915
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0743.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0743.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:34Z",
            "pc:count": 4038577,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527425.4748,
                "count": 4038577,
                "maximum": -527156.8172,
                "minimum": -527691.7372,
                "name": "X",
                "position": 0,
                "stddev": 133.1120324,
                "variance": 17718.81317
              },
              {
                "average": 2094441.071,
                "count": 4038577,
                "maximum": 2094716.178,
                "minimum": 2094188.258,
                "name": "Y",
                "position": 1,
                "stddev": 123.1678302,
                "variance": 15170.31439
              },
              {
                "average": 4.645618071,
                "count": 4038577,
                "maximum": 6.917734896,
                "minimum": 3.057734896,
                "name": "Z",
                "position": 2,
                "stddev": 0.3647034088,
                "variance": 0.1330085764
              },
              {
                "average": 42031.42381,
                "count": 4038577,
                "maximum": 65535,
                "minimum": 11383,
                "name": "Intensity",
                "position": 3,
                "stddev": 7230.640861,
                "variance": 52282167.26
              },
              {
                "average": 1,
                "count": 4038577,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 4038577,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5002120797,
                "count": 4038577,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000169,
                "variance": 0.2500000169
              },
              {
                "average": 0.0002956486901,
                "count": 4038577,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01719189795,
                "variance": 0.0002955613552
              },
              {
                "average": 1.253933749,
                "count": 4038577,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4360786281,
                "variance": 0.1901645699
              },
              {
                "average": 3.863315954,
                "count": 4038577,
                "maximum": 21.55200005,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.72756782,
                "variance": 115.0807113
              },
              {
                "average": 0.5190206848,
                "count": 4038577,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996381444,
                "variance": 0.2496382754
              },
              {
                "average": 234.6396092,
                "count": 4038577,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.62665131,
                "variance": 2081.79131
              },
              {
                "average": 249112889,
                "count": 4038577,
                "maximum": 249158574,
                "minimum": 249092144,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30629.94308,
                "variance": 938193413
              },
              {
                "average": 0.5190206848,
                "count": 4038577,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996381444,
                "variance": 0.2496382754
              },
              {
                "average": 0,
                "count": 4038577,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4038577,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4038577,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1915409809,
                "count": 4038577,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3935137506,
                "variance": 0.1548530719
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527691.7372,
              2094188.258,
              3.057734896,
              -527156.8172,
              2094716.178,
              6.917734896
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527691.7372385082,
                    2094188.25770343,
                    3.05773489617915
                  ],
                  [
                    -527691.7372385082,
                    2094716.17770343,
                    3.05773489617915
                  ],
                  [
                    -527156.8172385083,
                    2094716.17770343,
                    6.91773489617915
                  ],
                  [
                    -527156.8172385083,
                    2094188.25770343,
                    6.91773489617915
                  ],
                  [
                    -527691.7372385082,
                    2094188.25770343,
                    3.05773489617915
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:34+00:00",
            "end_time": "2019-08-06T02:02:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0628.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.75000290690932,
              68.3433603847074,
              -11.12634643351096
            ],
            [
              -166.75242683211744,
              68.34805176595023,
              -11.12634643351096
            ],
            [
              -166.7398015531943,
              68.3489747391068,
              20.25365356648904
            ],
            [
              -166.7373799087951,
              68.34428316822456,
              20.25365356648904
            ],
            [
              -166.75000290690932,
              68.3433603847074,
              -11.12634643351096
            ]
          ]
        ]
      },
      "bbox": [
        -166.7524268,
        68.34336038,
        -11.12634643,
        -166.7373799,
        68.34897474,
        20.25365357
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:23Z",
        "pc:count": 4449728,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526680.4819,
            "count": 4449728,
            "maximum": -526410.6716,
            "minimum": -526945.3916,
            "name": "X",
            "position": 0,
            "stddev": 131.5772003,
            "variance": 17312.55963
          },
          {
            "average": 2093405.533,
            "count": 4449728,
            "maximum": 2093659.544,
            "minimum": 2093131.384,
            "name": "Y",
            "position": 1,
            "stddev": 132.8243016,
            "variance": 17642.2951
          },
          {
            "average": 5.750235295,
            "count": 4449728,
            "maximum": 20.25365357,
            "minimum": -11.12634643,
            "name": "Z",
            "position": 2,
            "stddev": 1.291337955,
            "variance": 1.667553715
          },
          {
            "average": 25896.11244,
            "count": 4449728,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 5145.530664,
            "variance": 26476485.81
          },
          {
            "average": 1.006371625,
            "count": 4449728,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.08130557753,
            "variance": 0.006610596937
          },
          {
            "average": 1.012751116,
            "count": 4449728,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1158778708,
            "variance": 0.01342768093
          },
          {
            "average": 0.4983963065,
            "count": 4449728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999974843,
            "variance": 0.2499974843
          },
          {
            "average": 0.000405418039,
            "count": 4449728,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02013091569,
            "variance": 0.0004052537663
          },
          {
            "average": 1.356596628,
            "count": 4449728,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.8639172872,
            "variance": 0.7463530792
          },
          {
            "average": -2.359521424,
            "count": 4449728,
            "maximum": 16.36199951,
            "minimum": -21.12599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.3696756,
            "variance": 107.530172
          },
          {
            "average": 0.4704184166,
            "count": 4449728,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4991242189,
            "variance": 0.2491249859
          },
          {
            "average": 227.1300529,
            "count": 4449728,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.34434984,
            "variance": 1966.421363
          },
          {
            "average": 249108606.6,
            "count": 4449728,
            "maximum": 249159583.1,
            "minimum": 249091574.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29085.29083,
            "variance": 845954142.9
          },
          {
            "average": 0.4704184166,
            "count": 4449728,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4991242189,
            "variance": 0.2491249859
          },
          {
            "average": 0,
            "count": 4449728,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4449728,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4449728,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2279541581,
            "count": 4449728,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4195129312,
            "variance": 0.1759910995
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526945.3916,
          2093131.384,
          -11.12634643,
          -526410.6716,
          2093659.544,
          20.25365357
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526945.3915672338,
                2093131.3837715997,
                -11.12634643351096
              ],
              [
                -526945.3915672338,
                2093659.5437716,
                -11.12634643351096
              ],
              [
                -526410.6715672339,
                2093659.5437716,
                20.25365356648904
              ],
              [
                -526410.6715672339,
                2093131.3837715997,
                20.25365356648904
              ],
              [
                -526945.3915672338,
                2093131.3837715997,
                -11.12634643351096
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:23+00:00",
        "end_time": "2019-08-06T01:52:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0628.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0628.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0628.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0628.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7524268,
            68.34336038,
            -11.12634643,
            -166.7373799,
            68.34897474,
            20.25365357
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.75000290690932,
                  68.3433603847074,
                  -11.12634643351096
                ],
                [
                  -166.75242683211744,
                  68.34805176595023,
                  -11.12634643351096
                ],
                [
                  -166.7398015531943,
                  68.3489747391068,
                  20.25365356648904
                ],
                [
                  -166.7373799087951,
                  68.34428316822456,
                  20.25365356648904
                ],
                [
                  -166.75000290690932,
                  68.3433603847074,
                  -11.12634643351096
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0628.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0628.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:23Z",
            "pc:count": 4449728,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526680.4819,
                "count": 4449728,
                "maximum": -526410.6716,
                "minimum": -526945.3916,
                "name": "X",
                "position": 0,
                "stddev": 131.5772003,
                "variance": 17312.55963
              },
              {
                "average": 2093405.533,
                "count": 4449728,
                "maximum": 2093659.544,
                "minimum": 2093131.384,
                "name": "Y",
                "position": 1,
                "stddev": 132.8243016,
                "variance": 17642.2951
              },
              {
                "average": 5.750235295,
                "count": 4449728,
                "maximum": 20.25365357,
                "minimum": -11.12634643,
                "name": "Z",
                "position": 2,
                "stddev": 1.291337955,
                "variance": 1.667553715
              },
              {
                "average": 25896.11244,
                "count": 4449728,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 5145.530664,
                "variance": 26476485.81
              },
              {
                "average": 1.006371625,
                "count": 4449728,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.08130557753,
                "variance": 0.006610596937
              },
              {
                "average": 1.012751116,
                "count": 4449728,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1158778708,
                "variance": 0.01342768093
              },
              {
                "average": 0.4983963065,
                "count": 4449728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999974843,
                "variance": 0.2499974843
              },
              {
                "average": 0.000405418039,
                "count": 4449728,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02013091569,
                "variance": 0.0004052537663
              },
              {
                "average": 1.356596628,
                "count": 4449728,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.8639172872,
                "variance": 0.7463530792
              },
              {
                "average": -2.359521424,
                "count": 4449728,
                "maximum": 16.36199951,
                "minimum": -21.12599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.3696756,
                "variance": 107.530172
              },
              {
                "average": 0.4704184166,
                "count": 4449728,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4991242189,
                "variance": 0.2491249859
              },
              {
                "average": 227.1300529,
                "count": 4449728,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.34434984,
                "variance": 1966.421363
              },
              {
                "average": 249108606.6,
                "count": 4449728,
                "maximum": 249159583.1,
                "minimum": 249091574.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29085.29083,
                "variance": 845954142.9
              },
              {
                "average": 0.4704184166,
                "count": 4449728,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4991242189,
                "variance": 0.2491249859
              },
              {
                "average": 0,
                "count": 4449728,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4449728,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4449728,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2279541581,
                "count": 4449728,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4195129312,
                "variance": 0.1759910995
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526945.3916,
              2093131.384,
              -11.12634643,
              -526410.6716,
              2093659.544,
              20.25365357
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526945.3915672338,
                    2093131.3837715997,
                    -11.12634643351096
                  ],
                  [
                    -526945.3915672338,
                    2093659.5437716,
                    -11.12634643351096
                  ],
                  [
                    -526410.6715672339,
                    2093659.5437716,
                    20.25365356648904
                  ],
                  [
                    -526410.6715672339,
                    2093131.3837715997,
                    20.25365356648904
                  ],
                  [
                    -526945.3915672338,
                    2093131.3837715997,
                    -11.12634643351096
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:23+00:00",
            "end_time": "2019-08-06T01:52:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0744.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.76137220821195,
              68.35150741229515,
              1.460087043564705
            ],
            [
              -166.76379915144273,
              68.35619895950336,
              1.460087043564705
            ],
            [
              -166.75117348106363,
              68.35712253259709,
              5.340087043564704
            ],
            [
              -166.74874881930302,
              68.3524307955403,
              5.340087043564704
            ],
            [
              -166.76137220821195,
              68.35150741229515,
              1.460087043564705
            ]
          ]
        ]
      },
      "bbox": [
        -166.7637992,
        68.35150741,
        1.460087044,
        -166.7487488,
        68.35712253,
        5.340087044
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:40Z",
        "pc:count": 3821433,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526977.3178,
            "count": 3821433,
            "maximum": -526702.9548,
            "minimum": -527237.5348,
            "name": "X",
            "position": 0,
            "stddev": 133.3804107,
            "variance": 17790.33395
          },
          {
            "average": 2094362.68,
            "count": 3821433,
            "maximum": 2094633.582,
            "minimum": 2094105.402,
            "name": "Y",
            "position": 1,
            "stddev": 124.5614374,
            "variance": 15515.55169
          },
          {
            "average": 4.12089221,
            "count": 3821433,
            "maximum": 5.340087044,
            "minimum": 1.460087044,
            "name": "Z",
            "position": 2,
            "stddev": 0.7529339027,
            "variance": 0.5669094619
          },
          {
            "average": 42891.44582,
            "count": 3821433,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 7388.115503,
            "variance": 54584250.69
          },
          {
            "average": 1,
            "count": 3821433,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 3821433,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.5013190078,
            "count": 3821433,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999983256,
            "variance": 0.2499983256
          },
          {
            "average": 0.0002920370447,
            "count": 3821433,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01708659813,
            "variance": 0.0002919518355
          },
          {
            "average": 1.26146579,
            "count": 3821433,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.439895001,
            "variance": 0.1935076119
          },
          {
            "average": 2.858317455,
            "count": 3821433,
            "maximum": 21.51000023,
            "minimum": -16.06200027,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.93661175,
            "variance": 119.6094767
          },
          {
            "average": 0.5108020996,
            "count": 3821433,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998833664,
            "variance": 0.24988338
          },
          {
            "average": 233.9301254,
            "count": 3821433,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.24613988,
            "variance": 2047.213174
          },
          {
            "average": 249112377.2,
            "count": 3821433,
            "maximum": 249158580.7,
            "minimum": 249092153.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30399.6008,
            "variance": 924135728.6
          },
          {
            "average": 0.5108020996,
            "count": 3821433,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998833664,
            "variance": 0.24988338
          },
          {
            "average": 0,
            "count": 3821433,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3821433,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3821433,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1996361051,
            "count": 3821433,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3997268723,
            "variance": 0.1597815724
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527237.5348,
          2094105.402,
          1.460087044,
          -526702.9548,
          2094633.582,
          5.340087044
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527237.534778193,
                2094105.4024417151,
                1.460087043564705
              ],
              [
                -527237.534778193,
                2094633.5824417153,
                1.460087043564705
              ],
              [
                -526702.9547781929,
                2094633.5824417153,
                5.340087043564704
              ],
              [
                -526702.9547781929,
                2094105.4024417151,
                5.340087043564704
              ],
              [
                -527237.534778193,
                2094105.4024417151,
                1.460087043564705
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:40+00:00",
        "end_time": "2019-08-06T02:02:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0744.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0744.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0744.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0744.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7637992,
            68.35150741,
            1.460087044,
            -166.7487488,
            68.35712253,
            5.340087044
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.76137220821195,
                  68.35150741229515,
                  1.460087043564705
                ],
                [
                  -166.76379915144273,
                  68.35619895950336,
                  1.460087043564705
                ],
                [
                  -166.75117348106363,
                  68.35712253259709,
                  5.340087043564704
                ],
                [
                  -166.74874881930302,
                  68.3524307955403,
                  5.340087043564704
                ],
                [
                  -166.76137220821195,
                  68.35150741229515,
                  1.460087043564705
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0744.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0744.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:40Z",
            "pc:count": 3821433,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526977.3178,
                "count": 3821433,
                "maximum": -526702.9548,
                "minimum": -527237.5348,
                "name": "X",
                "position": 0,
                "stddev": 133.3804107,
                "variance": 17790.33395
              },
              {
                "average": 2094362.68,
                "count": 3821433,
                "maximum": 2094633.582,
                "minimum": 2094105.402,
                "name": "Y",
                "position": 1,
                "stddev": 124.5614374,
                "variance": 15515.55169
              },
              {
                "average": 4.12089221,
                "count": 3821433,
                "maximum": 5.340087044,
                "minimum": 1.460087044,
                "name": "Z",
                "position": 2,
                "stddev": 0.7529339027,
                "variance": 0.5669094619
              },
              {
                "average": 42891.44582,
                "count": 3821433,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 7388.115503,
                "variance": 54584250.69
              },
              {
                "average": 1,
                "count": 3821433,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 3821433,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.5013190078,
                "count": 3821433,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999983256,
                "variance": 0.2499983256
              },
              {
                "average": 0.0002920370447,
                "count": 3821433,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01708659813,
                "variance": 0.0002919518355
              },
              {
                "average": 1.26146579,
                "count": 3821433,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.439895001,
                "variance": 0.1935076119
              },
              {
                "average": 2.858317455,
                "count": 3821433,
                "maximum": 21.51000023,
                "minimum": -16.06200027,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.93661175,
                "variance": 119.6094767
              },
              {
                "average": 0.5108020996,
                "count": 3821433,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998833664,
                "variance": 0.24988338
              },
              {
                "average": 233.9301254,
                "count": 3821433,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.24613988,
                "variance": 2047.213174
              },
              {
                "average": 249112377.2,
                "count": 3821433,
                "maximum": 249158580.7,
                "minimum": 249092153.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30399.6008,
                "variance": 924135728.6
              },
              {
                "average": 0.5108020996,
                "count": 3821433,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998833664,
                "variance": 0.24988338
              },
              {
                "average": 0,
                "count": 3821433,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3821433,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3821433,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1996361051,
                "count": 3821433,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3997268723,
                "variance": 0.1597815724
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527237.5348,
              2094105.402,
              1.460087044,
              -526702.9548,
              2094633.582,
              5.340087044
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527237.534778193,
                    2094105.4024417151,
                    1.460087043564705
                  ],
                  [
                    -527237.534778193,
                    2094633.5824417153,
                    1.460087043564705
                  ],
                  [
                    -526702.9547781929,
                    2094633.5824417153,
                    5.340087043564704
                  ],
                  [
                    -526702.9547781929,
                    2094105.4024417151,
                    5.340087043564704
                  ],
                  [
                    -527237.534778193,
                    2094105.4024417151,
                    1.460087043564705
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:40+00:00",
            "end_time": "2019-08-06T02:02:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0629.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7389043215712,
              68.34340996182033,
              -12.47129510230225
            ],
            [
              -166.74132625930812,
              68.348101673962,
              -12.47129510230225
            ],
            [
              -166.72870148996705,
              68.34902378439047,
              25.24870489769775
            ],
            [
              -166.72628183327154,
              68.34433188277285,
              25.24870489769775
            ],
            [
              -166.7389043215712,
              68.34340996182033,
              -12.47129510230225
            ]
          ]
        ]
      },
      "bbox": [
        -166.7413263,
        68.34340996,
        -12.4712951,
        -166.7262818,
        68.34902378,
        25.2487049
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:16Z",
        "pc:count": 4551225,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526221.6093,
            "count": 4551225,
            "maximum": -525956.6153,
            "minimum": -526491.2953,
            "name": "X",
            "position": 0,
            "stddev": 129.4071059,
            "variance": 16746.19906
          },
          {
            "average": 2093326.67,
            "count": 4551225,
            "maximum": 2093576.917,
            "minimum": 2093048.737,
            "name": "Y",
            "position": 1,
            "stddev": 134.3770163,
            "variance": 18057.1825
          },
          {
            "average": 5.872294118,
            "count": 4551225,
            "maximum": 25.2487049,
            "minimum": -12.4712951,
            "name": "Z",
            "position": 2,
            "stddev": 1.1196133,
            "variance": 1.253533941
          },
          {
            "average": 26132.24463,
            "count": 4551225,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 5348.534455,
            "variance": 28606820.82
          },
          {
            "average": 1.011383089,
            "count": 4551225,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1077207147,
            "variance": 0.01160375238
          },
          {
            "average": 1.022754973,
            "count": 4551225,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1526008393,
            "variance": 0.02328701615
          },
          {
            "average": 0.4983227593,
            "count": 4551225,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999972418,
            "variance": 0.2499972418
          },
          {
            "average": 0.0004205461167,
            "count": 4551225,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02050291077,
            "variance": 0.00042036935
          },
          {
            "average": 1.428537152,
            "count": 4551225,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.035303159,
            "variance": 1.071852632
          },
          {
            "average": -2.768386762,
            "count": 4551225,
            "maximum": 16.2840004,
            "minimum": -21.13199997,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.5871356,
            "variance": 112.0874402
          },
          {
            "average": 0.4651149965,
            "count": 4551225,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4987816067,
            "variance": 0.2487830912
          },
          {
            "average": 226.9078573,
            "count": 4551225,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.20746782,
            "variance": 1954.300211
          },
          {
            "average": 249108468.4,
            "count": 4551225,
            "maximum": 249159576,
            "minimum": 249091565.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28996.26505,
            "variance": 840783386.6
          },
          {
            "average": 0.4651149965,
            "count": 4551225,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4987816067,
            "variance": 0.2487830912
          },
          {
            "average": 0,
            "count": 4551225,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4551225,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4551225,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2414956413,
            "count": 4551225,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4279901129,
            "variance": 0.1831755368
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526491.2953,
          2093048.737,
          -12.4712951,
          -525956.6153,
          2093576.917,
          25.2487049
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526491.2953101213,
                2093048.7371835376,
                -12.47129510230225
              ],
              [
                -526491.2953101213,
                2093576.9171835377,
                -12.47129510230225
              ],
              [
                -525956.6153101213,
                2093576.9171835377,
                25.24870489769775
              ],
              [
                -525956.6153101213,
                2093048.7371835376,
                25.24870489769775
              ],
              [
                -526491.2953101213,
                2093048.7371835376,
                -12.47129510230225
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:16+00:00",
        "end_time": "2019-08-06T01:52:45+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0629.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0629.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0629.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0629.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7413263,
            68.34340996,
            -12.4712951,
            -166.7262818,
            68.34902378,
            25.2487049
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7389043215712,
                  68.34340996182033,
                  -12.47129510230225
                ],
                [
                  -166.74132625930812,
                  68.348101673962,
                  -12.47129510230225
                ],
                [
                  -166.72870148996705,
                  68.34902378439047,
                  25.24870489769775
                ],
                [
                  -166.72628183327154,
                  68.34433188277285,
                  25.24870489769775
                ],
                [
                  -166.7389043215712,
                  68.34340996182033,
                  -12.47129510230225
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0629.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0629.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:16Z",
            "pc:count": 4551225,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526221.6093,
                "count": 4551225,
                "maximum": -525956.6153,
                "minimum": -526491.2953,
                "name": "X",
                "position": 0,
                "stddev": 129.4071059,
                "variance": 16746.19906
              },
              {
                "average": 2093326.67,
                "count": 4551225,
                "maximum": 2093576.917,
                "minimum": 2093048.737,
                "name": "Y",
                "position": 1,
                "stddev": 134.3770163,
                "variance": 18057.1825
              },
              {
                "average": 5.872294118,
                "count": 4551225,
                "maximum": 25.2487049,
                "minimum": -12.4712951,
                "name": "Z",
                "position": 2,
                "stddev": 1.1196133,
                "variance": 1.253533941
              },
              {
                "average": 26132.24463,
                "count": 4551225,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 5348.534455,
                "variance": 28606820.82
              },
              {
                "average": 1.011383089,
                "count": 4551225,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1077207147,
                "variance": 0.01160375238
              },
              {
                "average": 1.022754973,
                "count": 4551225,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1526008393,
                "variance": 0.02328701615
              },
              {
                "average": 0.4983227593,
                "count": 4551225,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999972418,
                "variance": 0.2499972418
              },
              {
                "average": 0.0004205461167,
                "count": 4551225,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02050291077,
                "variance": 0.00042036935
              },
              {
                "average": 1.428537152,
                "count": 4551225,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.035303159,
                "variance": 1.071852632
              },
              {
                "average": -2.768386762,
                "count": 4551225,
                "maximum": 16.2840004,
                "minimum": -21.13199997,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.5871356,
                "variance": 112.0874402
              },
              {
                "average": 0.4651149965,
                "count": 4551225,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4987816067,
                "variance": 0.2487830912
              },
              {
                "average": 226.9078573,
                "count": 4551225,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.20746782,
                "variance": 1954.300211
              },
              {
                "average": 249108468.4,
                "count": 4551225,
                "maximum": 249159576,
                "minimum": 249091565.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28996.26505,
                "variance": 840783386.6
              },
              {
                "average": 0.4651149965,
                "count": 4551225,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4987816067,
                "variance": 0.2487830912
              },
              {
                "average": 0,
                "count": 4551225,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4551225,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4551225,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2414956413,
                "count": 4551225,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4279901129,
                "variance": 0.1831755368
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526491.2953,
              2093048.737,
              -12.4712951,
              -525956.6153,
              2093576.917,
              25.2487049
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526491.2953101213,
                    2093048.7371835376,
                    -12.47129510230225
                  ],
                  [
                    -526491.2953101213,
                    2093576.9171835377,
                    -12.47129510230225
                  ],
                  [
                    -525956.6153101213,
                    2093576.9171835377,
                    25.24870489769775
                  ],
                  [
                    -525956.6153101213,
                    2093048.7371835376,
                    25.24870489769775
                  ],
                  [
                    -526491.2953101213,
                    2093048.7371835376,
                    -12.47129510230225
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:16+00:00",
            "end_time": "2019-08-06T01:52:45+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0745.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.75027574735796,
              68.35155915176114,
              1.050296107486204
            ],
            [
              -166.75269969295016,
              68.35624907580377,
              1.050296107486204
            ],
            [
              -166.740067446086,
              68.35717230399752,
              55.970296107486206
            ],
            [
              -166.73764578252678,
              68.35248219024236,
              55.970296107486206
            ],
            [
              -166.75027574735796,
              68.35155915176114,
              1.050296107486204
            ]
          ]
        ]
      },
      "bbox": [
        -166.7526997,
        68.35155915,
        1.050296107,
        -166.7376458,
        68.3571723,
        55.97029611
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:47Z",
        "pc:count": 3519761,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526535.2988,
            "count": 3519761,
            "maximum": -526248.8015,
            "minimum": -526783.6415,
            "name": "X",
            "position": 0,
            "stddev": 129.8145693,
            "variance": 16851.8224
          },
          {
            "average": 2094270.836,
            "count": 3519761,
            "maximum": 2094550.938,
            "minimum": 2094022.958,
            "name": "Y",
            "position": 1,
            "stddev": 122.0241872,
            "variance": 14889.90227
          },
          {
            "average": 3.112276736,
            "count": 3519761,
            "maximum": 55.97029611,
            "minimum": 1.050296107,
            "name": "Z",
            "position": 2,
            "stddev": 1.151002044,
            "variance": 1.324805706
          },
          {
            "average": 38163.04472,
            "count": 3519761,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 12151.1554,
            "variance": 147650577.5
          },
          {
            "average": 1.002291917,
            "count": 3519761,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.04793183636,
            "variance": 0.002297460936
          },
          {
            "average": 1.004584686,
            "count": 3519761,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.06779003311,
            "variance": 0.004595488589
          },
          {
            "average": 0.5026622546,
            "count": 3519761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999929834,
            "variance": 0.2499929834
          },
          {
            "average": 0.0004352568257,
            "count": 3519761,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02085827176,
            "variance": 0.0004350675008
          },
          {
            "average": 1.659099013,
            "count": 3519761,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.762313957,
            "variance": 3.105750481
          },
          {
            "average": 1.643971735,
            "count": 3519761,
            "maximum": 21.6420002,
            "minimum": -16.0739994,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.82144185,
            "variance": 117.1036037
          },
          {
            "average": 0.5026935067,
            "count": 3519761,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499992816,
            "variance": 0.249992816
          },
          {
            "average": 229.4784078,
            "count": 3519761,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.04677625,
            "variance": 1853.024946
          },
          {
            "average": 249109369.6,
            "count": 3519761,
            "maximum": 249158587.5,
            "minimum": 249092160.7,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28919.55021,
            "variance": 836340384.1
          },
          {
            "average": 0.5026935067,
            "count": 3519761,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499992816,
            "variance": 0.249992816
          },
          {
            "average": 0,
            "count": 3519761,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3519761,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3519761,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2119601302,
            "count": 3519761,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.408696808,
            "variance": 0.1670330809
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526783.6415,
          2094022.958,
          1.050296107,
          -526248.8015,
          2094550.938,
          55.97029611
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526783.64150212,
                2094022.9580947717,
                1.050296107486204
              ],
              [
                -526783.64150212,
                2094550.9380947717,
                1.050296107486204
              ],
              [
                -526248.8015021199,
                2094550.9380947717,
                55.970296107486206
              ],
              [
                -526248.8015021199,
                2094022.9580947717,
                55.970296107486206
              ],
              [
                -526783.64150212,
                2094022.9580947717,
                1.050296107486204
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:47+00:00",
        "end_time": "2019-08-06T02:02:40+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0745.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0745.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0745.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0745.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7526997,
            68.35155915,
            1.050296107,
            -166.7376458,
            68.3571723,
            55.97029611
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.75027574735796,
                  68.35155915176114,
                  1.050296107486204
                ],
                [
                  -166.75269969295016,
                  68.35624907580377,
                  1.050296107486204
                ],
                [
                  -166.740067446086,
                  68.35717230399752,
                  55.970296107486206
                ],
                [
                  -166.73764578252678,
                  68.35248219024236,
                  55.970296107486206
                ],
                [
                  -166.75027574735796,
                  68.35155915176114,
                  1.050296107486204
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0745.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0745.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:47Z",
            "pc:count": 3519761,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526535.2988,
                "count": 3519761,
                "maximum": -526248.8015,
                "minimum": -526783.6415,
                "name": "X",
                "position": 0,
                "stddev": 129.8145693,
                "variance": 16851.8224
              },
              {
                "average": 2094270.836,
                "count": 3519761,
                "maximum": 2094550.938,
                "minimum": 2094022.958,
                "name": "Y",
                "position": 1,
                "stddev": 122.0241872,
                "variance": 14889.90227
              },
              {
                "average": 3.112276736,
                "count": 3519761,
                "maximum": 55.97029611,
                "minimum": 1.050296107,
                "name": "Z",
                "position": 2,
                "stddev": 1.151002044,
                "variance": 1.324805706
              },
              {
                "average": 38163.04472,
                "count": 3519761,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 12151.1554,
                "variance": 147650577.5
              },
              {
                "average": 1.002291917,
                "count": 3519761,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.04793183636,
                "variance": 0.002297460936
              },
              {
                "average": 1.004584686,
                "count": 3519761,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.06779003311,
                "variance": 0.004595488589
              },
              {
                "average": 0.5026622546,
                "count": 3519761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999929834,
                "variance": 0.2499929834
              },
              {
                "average": 0.0004352568257,
                "count": 3519761,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02085827176,
                "variance": 0.0004350675008
              },
              {
                "average": 1.659099013,
                "count": 3519761,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.762313957,
                "variance": 3.105750481
              },
              {
                "average": 1.643971735,
                "count": 3519761,
                "maximum": 21.6420002,
                "minimum": -16.0739994,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.82144185,
                "variance": 117.1036037
              },
              {
                "average": 0.5026935067,
                "count": 3519761,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499992816,
                "variance": 0.249992816
              },
              {
                "average": 229.4784078,
                "count": 3519761,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.04677625,
                "variance": 1853.024946
              },
              {
                "average": 249109369.6,
                "count": 3519761,
                "maximum": 249158587.5,
                "minimum": 249092160.7,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28919.55021,
                "variance": 836340384.1
              },
              {
                "average": 0.5026935067,
                "count": 3519761,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499992816,
                "variance": 0.249992816
              },
              {
                "average": 0,
                "count": 3519761,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3519761,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3519761,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2119601302,
                "count": 3519761,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.408696808,
                "variance": 0.1670330809
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526783.6415,
              2094022.958,
              1.050296107,
              -526248.8015,
              2094550.938,
              55.97029611
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526783.64150212,
                    2094022.9580947717,
                    1.050296107486204
                  ],
                  [
                    -526783.64150212,
                    2094550.9380947717,
                    1.050296107486204
                  ],
                  [
                    -526248.8015021199,
                    2094550.9380947717,
                    55.970296107486206
                  ],
                  [
                    -526248.8015021199,
                    2094022.9580947717,
                    55.970296107486206
                  ],
                  [
                    -526783.64150212,
                    2094022.9580947717,
                    1.050296107486204
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:47+00:00",
            "end_time": "2019-08-06T02:02:40+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0746.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7391728065762,
              68.35160788034182,
              1.027599946296782
            ],
            [
              -166.7415945803427,
              68.35629777996637,
              1.027599946296782
            ],
            [
              -166.72929400159023,
              68.35719597621802,
              48.92759994629678
            ],
            [
              -166.72687445008387,
              68.35250589202546,
              48.92759994629678
            ],
            [
              -166.7391728065762,
              68.35160788034182,
              1.027599946296782
            ]
          ]
        ]
      },
      "bbox": [
        -166.7415946,
        68.35160788,
        1.027599946,
        -166.7268745,
        68.35719598,
        48.92759995
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:54Z",
        "pc:count": 2125067,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526099.1413,
            "count": 2125067,
            "maximum": -525808.7544,
            "minimum": -526329.5344,
            "name": "X",
            "position": 0,
            "stddev": 131.2504804,
            "variance": 17226.6886
          },
          {
            "average": 2094145.397,
            "count": 2125067,
            "maximum": 2094468.172,
            "minimum": 2093940.212,
            "name": "Y",
            "position": 1,
            "stddev": 114.5037754,
            "variance": 13111.11458
          },
          {
            "average": 2.065407686,
            "count": 2125067,
            "maximum": 48.92759995,
            "minimum": 1.027599946,
            "name": "Z",
            "position": 2,
            "stddev": 0.9137721658,
            "variance": 0.834979571
          },
          {
            "average": 25164.95,
            "count": 2125067,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 16631.88035,
            "variance": 276619444
          },
          {
            "average": 1.003600357,
            "count": 2125067,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.05994984753,
            "variance": 0.003593984219
          },
          {
            "average": 1.007202596,
            "count": 2125067,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.08467872518,
            "variance": 0.007170486497
          },
          {
            "average": 0.5031050786,
            "count": 2125067,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499990476,
            "variance": 0.2499904761
          },
          {
            "average": 0.0006310389272,
            "count": 2125067,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02511256685,
            "variance": 0.0006306410139
          },
          {
            "average": 4.197983405,
            "count": 2125067,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.688865965,
            "variance": 13.60773211
          },
          {
            "average": -1.128169511,
            "count": 2125067,
            "maximum": 21.24600029,
            "minimum": -15.93000031,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.291851862,
            "variance": 68.7548073
          },
          {
            "average": 0.4779835177,
            "count": 2125067,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995151568,
            "variance": 0.2495153919
          },
          {
            "average": 217.5158393,
            "count": 2125067,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 33.83921127,
            "variance": 1145.092219
          },
          {
            "average": 249101322.5,
            "count": 2125067,
            "maximum": 249158594.7,
            "minimum": 249092167.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 22677.70528,
            "variance": 514278316.7
          },
          {
            "average": 0.4779835177,
            "count": 2125067,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995151568,
            "variance": 0.2495153919
          },
          {
            "average": 0,
            "count": 2125067,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2125067,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2125067,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1329553374,
            "count": 2125067,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3395265379,
            "variance": 0.1152782699
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526329.5344,
          2093940.212,
          1.027599946,
          -525808.7544,
          2094468.172,
          48.92759995
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526329.5343981629,
                2093940.2117854897,
                1.027599946296782
              ],
              [
                -526329.5343981629,
                2094468.1717854897,
                1.027599946296782
              ],
              [
                -525808.7543981628,
                2094468.1717854897,
                48.92759994629678
              ],
              [
                -525808.7543981628,
                2093940.2117854897,
                48.92759994629678
              ],
              [
                -526329.5343981629,
                2093940.2117854897,
                1.027599946296782
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:54+00:00",
        "end_time": "2019-08-06T02:02:47+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0746.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0746.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0746.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0746.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7415946,
            68.35160788,
            1.027599946,
            -166.7268745,
            68.35719598,
            48.92759995
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7391728065762,
                  68.35160788034182,
                  1.027599946296782
                ],
                [
                  -166.7415945803427,
                  68.35629777996637,
                  1.027599946296782
                ],
                [
                  -166.72929400159023,
                  68.35719597621802,
                  48.92759994629678
                ],
                [
                  -166.72687445008387,
                  68.35250589202546,
                  48.92759994629678
                ],
                [
                  -166.7391728065762,
                  68.35160788034182,
                  1.027599946296782
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0746.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0746.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:54Z",
            "pc:count": 2125067,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526099.1413,
                "count": 2125067,
                "maximum": -525808.7544,
                "minimum": -526329.5344,
                "name": "X",
                "position": 0,
                "stddev": 131.2504804,
                "variance": 17226.6886
              },
              {
                "average": 2094145.397,
                "count": 2125067,
                "maximum": 2094468.172,
                "minimum": 2093940.212,
                "name": "Y",
                "position": 1,
                "stddev": 114.5037754,
                "variance": 13111.11458
              },
              {
                "average": 2.065407686,
                "count": 2125067,
                "maximum": 48.92759995,
                "minimum": 1.027599946,
                "name": "Z",
                "position": 2,
                "stddev": 0.9137721658,
                "variance": 0.834979571
              },
              {
                "average": 25164.95,
                "count": 2125067,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 16631.88035,
                "variance": 276619444
              },
              {
                "average": 1.003600357,
                "count": 2125067,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.05994984753,
                "variance": 0.003593984219
              },
              {
                "average": 1.007202596,
                "count": 2125067,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.08467872518,
                "variance": 0.007170486497
              },
              {
                "average": 0.5031050786,
                "count": 2125067,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499990476,
                "variance": 0.2499904761
              },
              {
                "average": 0.0006310389272,
                "count": 2125067,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02511256685,
                "variance": 0.0006306410139
              },
              {
                "average": 4.197983405,
                "count": 2125067,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.688865965,
                "variance": 13.60773211
              },
              {
                "average": -1.128169511,
                "count": 2125067,
                "maximum": 21.24600029,
                "minimum": -15.93000031,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.291851862,
                "variance": 68.7548073
              },
              {
                "average": 0.4779835177,
                "count": 2125067,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995151568,
                "variance": 0.2495153919
              },
              {
                "average": 217.5158393,
                "count": 2125067,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 33.83921127,
                "variance": 1145.092219
              },
              {
                "average": 249101322.5,
                "count": 2125067,
                "maximum": 249158594.7,
                "minimum": 249092167.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 22677.70528,
                "variance": 514278316.7
              },
              {
                "average": 0.4779835177,
                "count": 2125067,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995151568,
                "variance": 0.2495153919
              },
              {
                "average": 0,
                "count": 2125067,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2125067,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2125067,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1329553374,
                "count": 2125067,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3395265379,
                "variance": 0.1152782699
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526329.5344,
              2093940.212,
              1.027599946,
              -525808.7544,
              2094468.172,
              48.92759995
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526329.5343981629,
                    2093940.2117854897,
                    1.027599946296782
                  ],
                  [
                    -526329.5343981629,
                    2094468.1717854897,
                    1.027599946296782
                  ],
                  [
                    -525808.7543981628,
                    2094468.1717854897,
                    48.92759994629678
                  ],
                  [
                    -525808.7543981628,
                    2093940.2117854897,
                    48.92759994629678
                  ],
                  [
                    -526329.5343981629,
                    2093940.2117854897,
                    1.027599946296782
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:54+00:00",
            "end_time": "2019-08-06T02:02:47+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0687.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.79453558076105,
              68.34725420088749,
              -5.424783508106199
            ],
            [
              -166.7969677857204,
              68.35194415034785,
              -5.424783508106199
            ],
            [
              -166.7843421872956,
              68.35287032253014,
              23.155216491893803
            ],
            [
              -166.78191226218675,
              68.34818018279323,
              23.155216491893803
            ],
            [
              -166.79453558076105,
              68.34725420088749,
              -5.424783508106199
            ]
          ]
        ]
      },
      "bbox": [
        -166.7969678,
        68.3472542,
        -5.424783508,
        -166.7819123,
        68.35287032,
        23.15521649
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:50Z",
        "pc:count": 3841154,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528415.4247,
            "count": 3841154,
            "maximum": -528145.9861,
            "minimum": -528680.7061,
            "name": "X",
            "position": 0,
            "stddev": 133.9295248,
            "variance": 17937.11762
          },
          {
            "average": 2094158.864,
            "count": 3841154,
            "maximum": 2094435.756,
            "minimum": 2093907.696,
            "name": "Y",
            "position": 1,
            "stddev": 130.2156204,
            "variance": 16956.10779
          },
          {
            "average": 4.838351857,
            "count": 3841154,
            "maximum": 23.15521649,
            "minimum": -5.424783508,
            "name": "Z",
            "position": 2,
            "stddev": 0.3922207051,
            "variance": 0.1538370815
          },
          {
            "average": 40731.32471,
            "count": 3841154,
            "maximum": 65535,
            "minimum": 2870,
            "name": "Intensity",
            "position": 3,
            "stddev": 8007.600834,
            "variance": 64121671.12
          },
          {
            "average": 1.000186663,
            "count": 3841154,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01366118076,
            "variance": 0.0001866278596
          },
          {
            "average": 1.000373325,
            "count": 3841154,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01931802354,
            "variance": 0.0003731860333
          },
          {
            "average": 0.5020087713,
            "count": 3841154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999960299,
            "variance": 0.2499960299
          },
          {
            "average": 0.0004561129286,
            "count": 3841154,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02135193219,
            "variance": 0.0004559050082
          },
          {
            "average": 1.248192861,
            "count": 3841154,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4336329914,
            "variance": 0.1880375712
          },
          {
            "average": -2.772748032,
            "count": 3841154,
            "maximum": 16.29599953,
            "minimum": -21.05400085,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.96100666,
            "variance": 120.143667
          },
          {
            "average": 0.4724085522,
            "count": 3841154,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992381966,
            "variance": 0.2492387769
          },
          {
            "average": 231.2734223,
            "count": 3841154,
            "maximum": 305,
            "minimum": 202,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.03526436,
            "variance": 2028.175036
          },
          {
            "average": 249110787.3,
            "count": 3841154,
            "maximum": 249159610.2,
            "minimum": 249091971.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29922.56191,
            "variance": 895359711.1
          },
          {
            "average": 0.4724085522,
            "count": 3841154,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992381966,
            "variance": 0.2492387769
          },
          {
            "average": 0,
            "count": 3841154,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3841154,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3841154,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2565575345,
            "count": 3841154,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4367331172,
            "variance": 0.1907358157
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528680.7061,
          2093907.696,
          -5.424783508,
          -528145.9861,
          2094435.756,
          23.15521649
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528680.706114342,
                2093907.6955449092,
                -5.424783508106199
              ],
              [
                -528680.706114342,
                2094435.7555449093,
                -5.424783508106199
              ],
              [
                -528145.986114342,
                2094435.7555449093,
                23.155216491893803
              ],
              [
                -528145.986114342,
                2093907.6955449092,
                23.155216491893803
              ],
              [
                -528680.706114342,
                2093907.6955449092,
                -5.424783508106199
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:50+00:00",
        "end_time": "2019-08-06T01:59:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0687.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0687.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0687.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0687.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7969678,
            68.3472542,
            -5.424783508,
            -166.7819123,
            68.35287032,
            23.15521649
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.79453558076105,
                  68.34725420088749,
                  -5.424783508106199
                ],
                [
                  -166.7969677857204,
                  68.35194415034785,
                  -5.424783508106199
                ],
                [
                  -166.7843421872956,
                  68.35287032253014,
                  23.155216491893803
                ],
                [
                  -166.78191226218675,
                  68.34818018279323,
                  23.155216491893803
                ],
                [
                  -166.79453558076105,
                  68.34725420088749,
                  -5.424783508106199
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0687.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0687.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:50Z",
            "pc:count": 3841154,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528415.4247,
                "count": 3841154,
                "maximum": -528145.9861,
                "minimum": -528680.7061,
                "name": "X",
                "position": 0,
                "stddev": 133.9295248,
                "variance": 17937.11762
              },
              {
                "average": 2094158.864,
                "count": 3841154,
                "maximum": 2094435.756,
                "minimum": 2093907.696,
                "name": "Y",
                "position": 1,
                "stddev": 130.2156204,
                "variance": 16956.10779
              },
              {
                "average": 4.838351857,
                "count": 3841154,
                "maximum": 23.15521649,
                "minimum": -5.424783508,
                "name": "Z",
                "position": 2,
                "stddev": 0.3922207051,
                "variance": 0.1538370815
              },
              {
                "average": 40731.32471,
                "count": 3841154,
                "maximum": 65535,
                "minimum": 2870,
                "name": "Intensity",
                "position": 3,
                "stddev": 8007.600834,
                "variance": 64121671.12
              },
              {
                "average": 1.000186663,
                "count": 3841154,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01366118076,
                "variance": 0.0001866278596
              },
              {
                "average": 1.000373325,
                "count": 3841154,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01931802354,
                "variance": 0.0003731860333
              },
              {
                "average": 0.5020087713,
                "count": 3841154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999960299,
                "variance": 0.2499960299
              },
              {
                "average": 0.0004561129286,
                "count": 3841154,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02135193219,
                "variance": 0.0004559050082
              },
              {
                "average": 1.248192861,
                "count": 3841154,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4336329914,
                "variance": 0.1880375712
              },
              {
                "average": -2.772748032,
                "count": 3841154,
                "maximum": 16.29599953,
                "minimum": -21.05400085,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.96100666,
                "variance": 120.143667
              },
              {
                "average": 0.4724085522,
                "count": 3841154,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992381966,
                "variance": 0.2492387769
              },
              {
                "average": 231.2734223,
                "count": 3841154,
                "maximum": 305,
                "minimum": 202,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.03526436,
                "variance": 2028.175036
              },
              {
                "average": 249110787.3,
                "count": 3841154,
                "maximum": 249159610.2,
                "minimum": 249091971.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29922.56191,
                "variance": 895359711.1
              },
              {
                "average": 0.4724085522,
                "count": 3841154,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992381966,
                "variance": 0.2492387769
              },
              {
                "average": 0,
                "count": 3841154,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3841154,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3841154,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2565575345,
                "count": 3841154,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4367331172,
                "variance": 0.1907358157
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528680.7061,
              2093907.696,
              -5.424783508,
              -528145.9861,
              2094435.756,
              23.15521649
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528680.706114342,
                    2093907.6955449092,
                    -5.424783508106199
                  ],
                  [
                    -528680.706114342,
                    2094435.7555449093,
                    -5.424783508106199
                  ],
                  [
                    -528145.986114342,
                    2094435.7555449093,
                    23.155216491893803
                  ],
                  [
                    -528145.986114342,
                    2093907.6955449092,
                    23.155216491893803
                  ],
                  [
                    -528680.706114342,
                    2093907.6955449092,
                    -5.424783508106199
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:50+00:00",
            "end_time": "2019-08-06T01:59:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0691.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7501391064555,
              68.3474595009809,
              -9.920511486264019
            ],
            [
              -166.75256299588364,
              68.35215006477539,
              -9.920511486264019
            ],
            [
              -166.73994037380908,
              68.35307271684569,
              160.159488513736
            ],
            [
              -166.73751876464922,
              68.34838196347098,
              160.159488513736
            ],
            [
              -166.7501391064555,
              68.3474595009809,
              -9.920511486264019
            ]
          ]
        ]
      },
      "bbox": [
        -166.752563,
        68.3474595,
        -9.920511486,
        -166.7375188,
        68.35307272,
        160.1594885
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:22Z",
        "pc:count": 4119627,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526603.6451,
            "count": 4119627,
            "maximum": -526329.9934,
            "minimum": -526864.5134,
            "name": "X",
            "position": 0,
            "stddev": 135.4099627,
            "variance": 18335.858
          },
          {
            "average": 2093826.393,
            "count": 4119627,
            "maximum": 2094105.204,
            "minimum": 2093577.144,
            "name": "Y",
            "position": 1,
            "stddev": 120.6850026,
            "variance": 14564.86986
          },
          {
            "average": 5.384077512,
            "count": 4119627,
            "maximum": 160.1594885,
            "minimum": -9.920511486,
            "name": "Z",
            "position": 2,
            "stddev": 1.219174765,
            "variance": 1.486387108
          },
          {
            "average": 33636.76649,
            "count": 4119627,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10235.4592,
            "variance": 104764625
          },
          {
            "average": 1.012497491,
            "count": 4119627,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1124898046,
            "variance": 0.01265395613
          },
          {
            "average": 1.024997651,
            "count": 4119627,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1590934444,
            "variance": 0.02531072404
          },
          {
            "average": 0.5102789646,
            "count": 4119627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998943924,
            "variance": 0.2498944035
          },
          {
            "average": 0.0003677517406,
            "count": 4119627,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01917333014,
            "variance": 0.0003676165885
          },
          {
            "average": 1.483235497,
            "count": 4119627,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.12376094,
            "variance": 1.26283865
          },
          {
            "average": -3.638212985,
            "count": 4119627,
            "maximum": 16.48800087,
            "minimum": -21.20400047,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.80644879,
            "variance": 116.7793355
          },
          {
            "average": 0.5149755063,
            "count": 4119627,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997757446,
            "variance": 0.2497757948
          },
          {
            "average": 231.8237576,
            "count": 4119627,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.71312683,
            "variance": 2089.689965
          },
          {
            "average": 249111301,
            "count": 4119627,
            "maximum": 249159582.8,
            "minimum": 249091791.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30268.62107,
            "variance": 916189421.7
          },
          {
            "average": 0.5149755063,
            "count": 4119627,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997757446,
            "variance": 0.2497757948
          },
          {
            "average": 0,
            "count": 4119627,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4119627,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4119627,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2296008838,
            "count": 4119627,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4205762248,
            "variance": 0.1768843609
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526864.5134,
          2093577.144,
          -9.920511486,
          -526329.9934,
          2094105.204,
          160.1594885
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526864.5134084919,
                2093577.1438077379,
                -9.920511486264019
              ],
              [
                -526864.5134084919,
                2094105.203807738,
                -9.920511486264019
              ],
              [
                -526329.9934084918,
                2094105.203807738,
                160.159488513736
              ],
              [
                -526329.9934084918,
                2093577.1438077379,
                160.159488513736
              ],
              [
                -526864.5134084919,
                2093577.1438077379,
                -9.920511486264019
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:22+00:00",
        "end_time": "2019-08-06T01:56:31+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0691.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0691.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0691.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0691.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.752563,
            68.3474595,
            -9.920511486,
            -166.7375188,
            68.35307272,
            160.1594885
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7501391064555,
                  68.3474595009809,
                  -9.920511486264019
                ],
                [
                  -166.75256299588364,
                  68.35215006477539,
                  -9.920511486264019
                ],
                [
                  -166.73994037380908,
                  68.35307271684569,
                  160.159488513736
                ],
                [
                  -166.73751876464922,
                  68.34838196347098,
                  160.159488513736
                ],
                [
                  -166.7501391064555,
                  68.3474595009809,
                  -9.920511486264019
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0691.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0691.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:22Z",
            "pc:count": 4119627,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526603.6451,
                "count": 4119627,
                "maximum": -526329.9934,
                "minimum": -526864.5134,
                "name": "X",
                "position": 0,
                "stddev": 135.4099627,
                "variance": 18335.858
              },
              {
                "average": 2093826.393,
                "count": 4119627,
                "maximum": 2094105.204,
                "minimum": 2093577.144,
                "name": "Y",
                "position": 1,
                "stddev": 120.6850026,
                "variance": 14564.86986
              },
              {
                "average": 5.384077512,
                "count": 4119627,
                "maximum": 160.1594885,
                "minimum": -9.920511486,
                "name": "Z",
                "position": 2,
                "stddev": 1.219174765,
                "variance": 1.486387108
              },
              {
                "average": 33636.76649,
                "count": 4119627,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10235.4592,
                "variance": 104764625
              },
              {
                "average": 1.012497491,
                "count": 4119627,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1124898046,
                "variance": 0.01265395613
              },
              {
                "average": 1.024997651,
                "count": 4119627,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1590934444,
                "variance": 0.02531072404
              },
              {
                "average": 0.5102789646,
                "count": 4119627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998943924,
                "variance": 0.2498944035
              },
              {
                "average": 0.0003677517406,
                "count": 4119627,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01917333014,
                "variance": 0.0003676165885
              },
              {
                "average": 1.483235497,
                "count": 4119627,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.12376094,
                "variance": 1.26283865
              },
              {
                "average": -3.638212985,
                "count": 4119627,
                "maximum": 16.48800087,
                "minimum": -21.20400047,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.80644879,
                "variance": 116.7793355
              },
              {
                "average": 0.5149755063,
                "count": 4119627,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997757446,
                "variance": 0.2497757948
              },
              {
                "average": 231.8237576,
                "count": 4119627,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.71312683,
                "variance": 2089.689965
              },
              {
                "average": 249111301,
                "count": 4119627,
                "maximum": 249159582.8,
                "minimum": 249091791.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30268.62107,
                "variance": 916189421.7
              },
              {
                "average": 0.5149755063,
                "count": 4119627,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997757446,
                "variance": 0.2497757948
              },
              {
                "average": 0,
                "count": 4119627,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4119627,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4119627,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2296008838,
                "count": 4119627,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4205762248,
                "variance": 0.1768843609
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526864.5134,
              2093577.144,
              -9.920511486,
              -526329.9934,
              2094105.204,
              160.1594885
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526864.5134084919,
                    2093577.1438077379,
                    -9.920511486264019
                  ],
                  [
                    -526864.5134084919,
                    2094105.203807738,
                    -9.920511486264019
                  ],
                  [
                    -526329.9934084918,
                    2094105.203807738,
                    160.159488513736
                  ],
                  [
                    -526329.9934084918,
                    2093577.1438077379,
                    160.159488513736
                  ],
                  [
                    -526864.5134084919,
                    2093577.1438077379,
                    -9.920511486264019
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:22+00:00",
            "end_time": "2019-08-06T01:56:31+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0688.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.78343600089278,
              68.34730708148128,
              3.50952253706502
            ],
            [
              -166.78586621920576,
              68.35199736239174,
              3.50952253706502
            ],
            [
              -166.77323782133473,
              68.35292291380375,
              51.009522537065024
            ],
            [
              -166.77080988370358,
              68.34823244273032,
              51.009522537065024
            ],
            [
              -166.78343600089278,
              68.34730708148128,
              3.50952253706502
            ]
          ]
        ]
      },
      "bbox": [
        -166.7858662,
        68.34730708,
        3.509522537,
        -166.7708099,
        68.35292291,
        51.00952254
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:43Z",
        "pc:count": 4215933,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527959.5558,
            "count": 4215933,
            "maximum": -527691.8056,
            "minimum": -528226.6256,
            "name": "X",
            "position": 0,
            "stddev": 131.5499298,
            "variance": 17305.38403
          },
          {
            "average": 2094073.773,
            "count": 4215933,
            "maximum": 2094353.189,
            "minimum": 2093825.109,
            "name": "Y",
            "position": 1,
            "stddev": 124.4104124,
            "variance": 15477.95072
          },
          {
            "average": 5.071162525,
            "count": 4215933,
            "maximum": 51.00952254,
            "minimum": 3.509522537,
            "name": "Z",
            "position": 2,
            "stddev": 0.3899375619,
            "variance": 0.1520513022
          },
          {
            "average": 38997.58113,
            "count": 4215933,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 8902.533281,
            "variance": 79255098.81
          },
          {
            "average": 1.000216085,
            "count": 4215933,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01469824433,
            "variance": 0.0002160383864
          },
          {
            "average": 1.00043217,
            "count": 4215933,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02078421005,
            "variance": 0.0004319833873
          },
          {
            "average": 0.5040689688,
            "count": 4215933,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999835025,
            "variance": 0.2499835028
          },
          {
            "average": 0.0004516200803,
            "count": 4215933,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.021246558,
            "variance": 0.0004514162267
          },
          {
            "average": 1.238181442,
            "count": 4215933,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4287016317,
            "variance": 0.1837850891
          },
          {
            "average": -3.251902922,
            "count": 4215933,
            "maximum": 16.24200058,
            "minimum": -21.10199928,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.79952645,
            "variance": 116.6297715
          },
          {
            "average": 0.4766095666,
            "count": 4215933,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4994526472,
            "variance": 0.2494529468
          },
          {
            "average": 230.0320854,
            "count": 4215933,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.58894814,
            "variance": 1988.174296
          },
          {
            "average": 249110027.5,
            "count": 4215933,
            "maximum": 249159603.8,
            "minimum": 249091775.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29579.76678,
            "variance": 874962602.7
          },
          {
            "average": 0.4766095666,
            "count": 4215933,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4994526472,
            "variance": 0.2494529468
          },
          {
            "average": 0,
            "count": 4215933,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4215933,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4215933,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2419386171,
            "count": 4215933,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4282573598,
            "variance": 0.1834043662
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528226.6256,
          2093825.109,
          3.509522537,
          -527691.8056,
          2094353.189,
          51.00952254
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528226.625553134,
                2093825.108579763,
                3.50952253706502
              ],
              [
                -528226.625553134,
                2094353.188579763,
                3.50952253706502
              ],
              [
                -527691.805553134,
                2094353.188579763,
                51.009522537065024
              ],
              [
                -527691.805553134,
                2093825.108579763,
                51.009522537065024
              ],
              [
                -528226.625553134,
                2093825.108579763,
                3.50952253706502
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:43+00:00",
        "end_time": "2019-08-06T01:56:15+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0688.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0688.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0688.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0688.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7858662,
            68.34730708,
            3.509522537,
            -166.7708099,
            68.35292291,
            51.00952254
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.78343600089278,
                  68.34730708148128,
                  3.50952253706502
                ],
                [
                  -166.78586621920576,
                  68.35199736239174,
                  3.50952253706502
                ],
                [
                  -166.77323782133473,
                  68.35292291380375,
                  51.009522537065024
                ],
                [
                  -166.77080988370358,
                  68.34823244273032,
                  51.009522537065024
                ],
                [
                  -166.78343600089278,
                  68.34730708148128,
                  3.50952253706502
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0688.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0688.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:43Z",
            "pc:count": 4215933,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527959.5558,
                "count": 4215933,
                "maximum": -527691.8056,
                "minimum": -528226.6256,
                "name": "X",
                "position": 0,
                "stddev": 131.5499298,
                "variance": 17305.38403
              },
              {
                "average": 2094073.773,
                "count": 4215933,
                "maximum": 2094353.189,
                "minimum": 2093825.109,
                "name": "Y",
                "position": 1,
                "stddev": 124.4104124,
                "variance": 15477.95072
              },
              {
                "average": 5.071162525,
                "count": 4215933,
                "maximum": 51.00952254,
                "minimum": 3.509522537,
                "name": "Z",
                "position": 2,
                "stddev": 0.3899375619,
                "variance": 0.1520513022
              },
              {
                "average": 38997.58113,
                "count": 4215933,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 8902.533281,
                "variance": 79255098.81
              },
              {
                "average": 1.000216085,
                "count": 4215933,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01469824433,
                "variance": 0.0002160383864
              },
              {
                "average": 1.00043217,
                "count": 4215933,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02078421005,
                "variance": 0.0004319833873
              },
              {
                "average": 0.5040689688,
                "count": 4215933,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999835025,
                "variance": 0.2499835028
              },
              {
                "average": 0.0004516200803,
                "count": 4215933,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.021246558,
                "variance": 0.0004514162267
              },
              {
                "average": 1.238181442,
                "count": 4215933,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4287016317,
                "variance": 0.1837850891
              },
              {
                "average": -3.251902922,
                "count": 4215933,
                "maximum": 16.24200058,
                "minimum": -21.10199928,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.79952645,
                "variance": 116.6297715
              },
              {
                "average": 0.4766095666,
                "count": 4215933,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4994526472,
                "variance": 0.2494529468
              },
              {
                "average": 230.0320854,
                "count": 4215933,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.58894814,
                "variance": 1988.174296
              },
              {
                "average": 249110027.5,
                "count": 4215933,
                "maximum": 249159603.8,
                "minimum": 249091775.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29579.76678,
                "variance": 874962602.7
              },
              {
                "average": 0.4766095666,
                "count": 4215933,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4994526472,
                "variance": 0.2494529468
              },
              {
                "average": 0,
                "count": 4215933,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4215933,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4215933,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2419386171,
                "count": 4215933,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4282573598,
                "variance": 0.1834043662
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528226.6256,
              2093825.109,
              3.509522537,
              -527691.8056,
              2094353.189,
              51.00952254
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528226.625553134,
                    2093825.108579763,
                    3.50952253706502
                  ],
                  [
                    -528226.625553134,
                    2094353.188579763,
                    3.50952253706502
                  ],
                  [
                    -527691.805553134,
                    2094353.188579763,
                    51.009522537065024
                  ],
                  [
                    -527691.805553134,
                    2093825.108579763,
                    51.009522537065024
                  ],
                  [
                    -528226.625553134,
                    2093825.108579763,
                    3.50952253706502
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:43+00:00",
            "end_time": "2019-08-06T01:56:15+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0692.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7390363291098,
              68.34750938181155,
              -10.990993212140229
            ],
            [
              -166.74145850560538,
              68.35220080952448,
              -10.990993212140229
            ],
            [
              -166.72883450345861,
              68.3531227367772,
              25.249006787859773
            ],
            [
              -166.72641460806452,
              68.34843111959763,
              25.249006787859773
            ],
            [
              -166.7390363291098,
              68.34750938181155,
              -10.990993212140229
            ]
          ]
        ]
      },
      "bbox": [
        -166.7414585,
        68.34750938,
        -10.99099321,
        -166.7264146,
        68.35312274,
        25.24900679
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:15Z",
        "pc:count": 4687835,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526148.0828,
            "count": 4687835,
            "maximum": -525875.7542,
            "minimum": -526410.3142,
            "name": "X",
            "position": 0,
            "stddev": 133.3237837,
            "variance": 17775.2313
          },
          {
            "average": 2093751.982,
            "count": 4687835,
            "maximum": 2094022.65,
            "minimum": 2093494.51,
            "name": "Y",
            "position": 1,
            "stddev": 123.0388432,
            "variance": 15138.55692
          },
          {
            "average": 5.937061954,
            "count": 4687835,
            "maximum": 25.24900679,
            "minimum": -10.99099321,
            "name": "Z",
            "position": 2,
            "stddev": 2.849302461,
            "variance": 8.118524514
          },
          {
            "average": 31314.97951,
            "count": 4687835,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 11080.77678,
            "variance": 122783614
          },
          {
            "average": 1.022528097,
            "count": 4687835,
            "maximum": 5,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1532711803,
            "variance": 0.0234920547
          },
          {
            "average": 1.045058753,
            "count": 4687835,
            "maximum": 5,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.2178167956,
            "variance": 0.04744415645
          },
          {
            "average": 0.5106318802,
            "count": 4687835,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998870037,
            "variance": 0.2498870164
          },
          {
            "average": 0.000401464642,
            "count": 4687835,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02003256234,
            "variance": 0.0004013035537
          },
          {
            "average": 1.739550347,
            "count": 4687835,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.525734641,
            "variance": 2.327866195
          },
          {
            "average": -3.553089034,
            "count": 4687835,
            "maximum": 16.42200089,
            "minimum": -21.12599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.8337487,
            "variance": 117.370111
          },
          {
            "average": 0.5095699827,
            "count": 4687835,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999084604,
            "variance": 0.2499084687
          },
          {
            "average": 230.8749598,
            "count": 4687835,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.23689235,
            "variance": 2046.37643
          },
          {
            "average": 249110677.1,
            "count": 4687835,
            "maximum": 249159575.8,
            "minimum": 249091798.9,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29958.69374,
            "variance": 897523330.9
          },
          {
            "average": 0.5095699827,
            "count": 4687835,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999084604,
            "variance": 0.2499084687
          },
          {
            "average": 0,
            "count": 4687835,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4687835,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4687835,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2386523843,
            "count": 4687835,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4262598533,
            "variance": 0.1816974625
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526410.3142,
          2093494.51,
          -10.99099321,
          -525875.7542,
          2094022.65,
          25.24900679
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526410.3141590806,
                2093494.51036482,
                -10.990993212140229
              ],
              [
                -526410.3141590806,
                2094022.6503648201,
                -10.990993212140229
              ],
              [
                -525875.7541590806,
                2094022.6503648201,
                25.249006787859773
              ],
              [
                -525875.7541590806,
                2093494.51036482,
                25.249006787859773
              ],
              [
                -526410.3141590806,
                2093494.51036482,
                -10.990993212140229
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:15+00:00",
        "end_time": "2019-08-06T01:56:38+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0692.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0692.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0692.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0692.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7414585,
            68.34750938,
            -10.99099321,
            -166.7264146,
            68.35312274,
            25.24900679
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7390363291098,
                  68.34750938181155,
                  -10.990993212140229
                ],
                [
                  -166.74145850560538,
                  68.35220080952448,
                  -10.990993212140229
                ],
                [
                  -166.72883450345861,
                  68.3531227367772,
                  25.249006787859773
                ],
                [
                  -166.72641460806452,
                  68.34843111959763,
                  25.249006787859773
                ],
                [
                  -166.7390363291098,
                  68.34750938181155,
                  -10.990993212140229
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0692.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0692.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:15Z",
            "pc:count": 4687835,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526148.0828,
                "count": 4687835,
                "maximum": -525875.7542,
                "minimum": -526410.3142,
                "name": "X",
                "position": 0,
                "stddev": 133.3237837,
                "variance": 17775.2313
              },
              {
                "average": 2093751.982,
                "count": 4687835,
                "maximum": 2094022.65,
                "minimum": 2093494.51,
                "name": "Y",
                "position": 1,
                "stddev": 123.0388432,
                "variance": 15138.55692
              },
              {
                "average": 5.937061954,
                "count": 4687835,
                "maximum": 25.24900679,
                "minimum": -10.99099321,
                "name": "Z",
                "position": 2,
                "stddev": 2.849302461,
                "variance": 8.118524514
              },
              {
                "average": 31314.97951,
                "count": 4687835,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 11080.77678,
                "variance": 122783614
              },
              {
                "average": 1.022528097,
                "count": 4687835,
                "maximum": 5,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1532711803,
                "variance": 0.0234920547
              },
              {
                "average": 1.045058753,
                "count": 4687835,
                "maximum": 5,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.2178167956,
                "variance": 0.04744415645
              },
              {
                "average": 0.5106318802,
                "count": 4687835,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998870037,
                "variance": 0.2498870164
              },
              {
                "average": 0.000401464642,
                "count": 4687835,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02003256234,
                "variance": 0.0004013035537
              },
              {
                "average": 1.739550347,
                "count": 4687835,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.525734641,
                "variance": 2.327866195
              },
              {
                "average": -3.553089034,
                "count": 4687835,
                "maximum": 16.42200089,
                "minimum": -21.12599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.8337487,
                "variance": 117.370111
              },
              {
                "average": 0.5095699827,
                "count": 4687835,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999084604,
                "variance": 0.2499084687
              },
              {
                "average": 230.8749598,
                "count": 4687835,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.23689235,
                "variance": 2046.37643
              },
              {
                "average": 249110677.1,
                "count": 4687835,
                "maximum": 249159575.8,
                "minimum": 249091798.9,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29958.69374,
                "variance": 897523330.9
              },
              {
                "average": 0.5095699827,
                "count": 4687835,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999084604,
                "variance": 0.2499084687
              },
              {
                "average": 0,
                "count": 4687835,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4687835,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4687835,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2386523843,
                "count": 4687835,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4262598533,
                "variance": 0.1816974625
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526410.3142,
              2093494.51,
              -10.99099321,
              -525875.7542,
              2094022.65,
              25.24900679
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526410.3141590806,
                    2093494.51036482,
                    -10.990993212140229
                  ],
                  [
                    -526410.3141590806,
                    2094022.6503648201,
                    -10.990993212140229
                  ],
                  [
                    -525875.7541590806,
                    2094022.6503648201,
                    25.249006787859773
                  ],
                  [
                    -525875.7541590806,
                    2093494.51036482,
                    25.249006787859773
                  ],
                  [
                    -526410.3141590806,
                    2093494.51036482,
                    -10.990993212140229
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:15+00:00",
            "end_time": "2019-08-06T01:56:38+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0622.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.81658075966567,
              68.34304893015344,
              3.286583707626473
            ],
            [
              -166.81901696997647,
              68.34773903390186,
              3.286583707626473
            ],
            [
              -166.80639714703437,
              68.3486665600809,
              16.426583707626474
            ],
            [
              -166.8039632149403,
              68.34397626581249,
              16.426583707626474
            ],
            [
              -166.81658075966567,
              68.34304893015344,
              3.286583707626473
            ]
          ]
        ]
      },
      "bbox": [
        -166.819017,
        68.34304893,
        3.286583708,
        -166.8039632,
        68.34866656,
        16.42658371
      ],
      "properties": {
        "datetime": "2019-08-06T20:47:04Z",
        "pc:count": 4636350,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -529398.6753,
            "count": 4636350,
            "maximum": -529134.8365,
            "minimum": -529669.4365,
            "name": "X",
            "position": 0,
            "stddev": 133.0606396,
            "variance": 17705.13381
          },
          {
            "average": 2093901.584,
            "count": 4636350,
            "maximum": 2094155.354,
            "minimum": 2093627.234,
            "name": "Y",
            "position": 1,
            "stddev": 122.6289557,
            "variance": 15037.86079
          },
          {
            "average": 4.514456873,
            "count": 4636350,
            "maximum": 16.42658371,
            "minimum": 3.286583708,
            "name": "Z",
            "position": 2,
            "stddev": 0.3050790968,
            "variance": 0.0930732553
          },
          {
            "average": 41073.87933,
            "count": 4636350,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9350.597451,
            "variance": 87433672.69
          },
          {
            "average": 1.000168451,
            "count": 4636350,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01297779397,
            "variance": 0.0001684231363
          },
          {
            "average": 1.000337334,
            "count": 4636350,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.01836356729,
            "variance": 0.0003372206038
          },
          {
            "average": 0.5101771868,
            "count": 4636350,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499896468,
            "variance": 0.2498964788
          },
          {
            "average": 0.0004076482578,
            "count": 4636350,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02018618757,
            "variance": 0.0004074821686
          },
          {
            "average": 1.230661188,
            "count": 4636350,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4388415502,
            "variance": 0.1925819062
          },
          {
            "average": -3.902587447,
            "count": 4636350,
            "maximum": 16.63199997,
            "minimum": -21.19799995,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.69724033,
            "variance": 114.4309507
          },
          {
            "average": 0.5006047861,
            "count": 4636350,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999996882,
            "variance": 0.2499996882
          },
          {
            "average": 231.479739,
            "count": 4636350,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 46.1675199,
            "variance": 2131.439893
          },
          {
            "average": 249111309.5,
            "count": 4636350,
            "maximum": 249159624.4,
            "minimum": 249091621.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30402.9221,
            "variance": 924337672.5
          },
          {
            "average": 0.5006047861,
            "count": 4636350,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999996882,
            "variance": 0.2499996882
          },
          {
            "average": 0,
            "count": 4636350,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4636350,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4636350,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2266597647,
            "count": 4636350,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4186706982,
            "variance": 0.1752851536
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529669.4365,
          2093627.234,
          3.286583708,
          -529134.8365,
          2094155.354,
          16.42658371
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529669.4364582268,
                2093627.233988194,
                3.286583707626473
              ],
              [
                -529669.4364582268,
                2094155.3539881941,
                3.286583707626473
              ],
              [
                -529134.8364582267,
                2094155.3539881941,
                16.426583707626474
              ],
              [
                -529134.8364582267,
                2093627.233988194,
                16.426583707626474
              ],
              [
                -529669.4364582268,
                2093627.233988194,
                3.286583707626473
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:47:04+00:00",
        "end_time": "2019-08-06T01:53:41+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0622.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0622.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0622.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0622.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.819017,
            68.34304893,
            3.286583708,
            -166.8039632,
            68.34866656,
            16.42658371
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.81658075966567,
                  68.34304893015344,
                  3.286583707626473
                ],
                [
                  -166.81901696997647,
                  68.34773903390186,
                  3.286583707626473
                ],
                [
                  -166.80639714703437,
                  68.3486665600809,
                  16.426583707626474
                ],
                [
                  -166.8039632149403,
                  68.34397626581249,
                  16.426583707626474
                ],
                [
                  -166.81658075966567,
                  68.34304893015344,
                  3.286583707626473
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0622.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0622.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:47:04Z",
            "pc:count": 4636350,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -529398.6753,
                "count": 4636350,
                "maximum": -529134.8365,
                "minimum": -529669.4365,
                "name": "X",
                "position": 0,
                "stddev": 133.0606396,
                "variance": 17705.13381
              },
              {
                "average": 2093901.584,
                "count": 4636350,
                "maximum": 2094155.354,
                "minimum": 2093627.234,
                "name": "Y",
                "position": 1,
                "stddev": 122.6289557,
                "variance": 15037.86079
              },
              {
                "average": 4.514456873,
                "count": 4636350,
                "maximum": 16.42658371,
                "minimum": 3.286583708,
                "name": "Z",
                "position": 2,
                "stddev": 0.3050790968,
                "variance": 0.0930732553
              },
              {
                "average": 41073.87933,
                "count": 4636350,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9350.597451,
                "variance": 87433672.69
              },
              {
                "average": 1.000168451,
                "count": 4636350,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01297779397,
                "variance": 0.0001684231363
              },
              {
                "average": 1.000337334,
                "count": 4636350,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.01836356729,
                "variance": 0.0003372206038
              },
              {
                "average": 0.5101771868,
                "count": 4636350,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499896468,
                "variance": 0.2498964788
              },
              {
                "average": 0.0004076482578,
                "count": 4636350,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02018618757,
                "variance": 0.0004074821686
              },
              {
                "average": 1.230661188,
                "count": 4636350,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4388415502,
                "variance": 0.1925819062
              },
              {
                "average": -3.902587447,
                "count": 4636350,
                "maximum": 16.63199997,
                "minimum": -21.19799995,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.69724033,
                "variance": 114.4309507
              },
              {
                "average": 0.5006047861,
                "count": 4636350,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999996882,
                "variance": 0.2499996882
              },
              {
                "average": 231.479739,
                "count": 4636350,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 46.1675199,
                "variance": 2131.439893
              },
              {
                "average": 249111309.5,
                "count": 4636350,
                "maximum": 249159624.4,
                "minimum": 249091621.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30402.9221,
                "variance": 924337672.5
              },
              {
                "average": 0.5006047861,
                "count": 4636350,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999996882,
                "variance": 0.2499996882
              },
              {
                "average": 0,
                "count": 4636350,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4636350,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4636350,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2266597647,
                "count": 4636350,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4186706982,
                "variance": 0.1752851536
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529669.4365,
              2093627.234,
              3.286583708,
              -529134.8365,
              2094155.354,
              16.42658371
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529669.4364582268,
                    2093627.233988194,
                    3.286583707626473
                  ],
                  [
                    -529669.4364582268,
                    2094155.3539881941,
                    3.286583707626473
                  ],
                  [
                    -529134.8364582267,
                    2094155.3539881941,
                    16.426583707626474
                  ],
                  [
                    -529134.8364582267,
                    2093627.233988194,
                    16.426583707626474
                  ],
                  [
                    -529669.4364582268,
                    2093627.233988194,
                    3.286583707626473
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:47:04+00:00",
            "end_time": "2019-08-06T01:53:41+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0689.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7723338064081,
              68.34735716159796,
              3.236634730006087
            ],
            [
              -166.7747624049905,
              68.35204848439352,
              3.236634730006087
            ],
            [
              -166.76213498709305,
              68.35297313802272,
              18.116634730006087
            ],
            [
              -166.75970866968638,
              68.34828162520597,
              18.116634730006087
            ],
            [
              -166.7723338064081,
              68.34735716159796,
              3.236634730006087
            ]
          ]
        ]
      },
      "bbox": [
        -166.7747624,
        68.34735716,
        3.23663473,
        -166.7597087,
        68.35297314,
        18.11663473
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:36Z",
        "pc:count": 4468750,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527508.4944,
            "count": 4468750,
            "maximum": -527237.7246,
            "minimum": -527772.4846,
            "name": "X",
            "position": 0,
            "stddev": 134.4485979,
            "variance": 18076.42548
          },
          {
            "average": 2093994.191,
            "count": 4468750,
            "maximum": 2094270.453,
            "minimum": 2093742.273,
            "name": "Y",
            "position": 1,
            "stddev": 124.26307,
            "variance": 15441.31056
          },
          {
            "average": 5.129763453,
            "count": 4468750,
            "maximum": 18.11663473,
            "minimum": 3.23663473,
            "name": "Z",
            "position": 2,
            "stddev": 0.7187374483,
            "variance": 0.5165835196
          },
          {
            "average": 37852.58288,
            "count": 4468750,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9963.876802,
            "variance": 99278840.92
          },
          {
            "average": 1.001221818,
            "count": 4468750,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03510569091,
            "variance": 0.001232409534
          },
          {
            "average": 1.002444084,
            "count": 4468750,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04974296605,
            "variance": 0.002474362672
          },
          {
            "average": 0.5052967832,
            "count": 4468750,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999719992,
            "variance": 0.249972
          },
          {
            "average": 0.0004368111888,
            "count": 4468750,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0208954656,
            "variance": 0.0004366204825
          },
          {
            "average": 1.252040727,
            "count": 4468750,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.512537748,
            "variance": 0.2626949432
          },
          {
            "average": -2.975181215,
            "count": 4468750,
            "maximum": 16.30800056,
            "minimum": -21.01799965,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.53650331,
            "variance": 111.0179019
          },
          {
            "average": 0.4898636084,
            "count": 4468750,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998972989,
            "variance": 0.2498973095
          },
          {
            "average": 229.3953828,
            "count": 4468750,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.28985325,
            "variance": 1961.591101
          },
          {
            "average": 249109632.4,
            "count": 4468750,
            "maximum": 249159596.5,
            "minimum": 249091777.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29371.57218,
            "variance": 862689252.6
          },
          {
            "average": 0.4898636084,
            "count": 4468750,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998972989,
            "variance": 0.2498973095
          },
          {
            "average": 0,
            "count": 4468750,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4468750,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4468750,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.220027972,
            "count": 4468750,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4142652556,
            "variance": 0.171615702
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527772.4846,
          2093742.273,
          3.23663473,
          -527237.7246,
          2094270.453,
          18.11663473
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527772.4846040364,
                2093742.2731367338,
                3.236634730006087
              ],
              [
                -527772.4846040364,
                2094270.453136734,
                3.236634730006087
              ],
              [
                -527237.7246040364,
                2094270.453136734,
                18.116634730006087
              ],
              [
                -527237.7246040364,
                2093742.2731367338,
                18.116634730006087
              ],
              [
                -527772.4846040364,
                2093742.2731367338,
                3.236634730006087
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:36+00:00",
        "end_time": "2019-08-06T01:56:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0689.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0689.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0689.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0689.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7747624,
            68.34735716,
            3.23663473,
            -166.7597087,
            68.35297314,
            18.11663473
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7723338064081,
                  68.34735716159796,
                  3.236634730006087
                ],
                [
                  -166.7747624049905,
                  68.35204848439352,
                  3.236634730006087
                ],
                [
                  -166.76213498709305,
                  68.35297313802272,
                  18.116634730006087
                ],
                [
                  -166.75970866968638,
                  68.34828162520597,
                  18.116634730006087
                ],
                [
                  -166.7723338064081,
                  68.34735716159796,
                  3.236634730006087
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0689.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0689.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:36Z",
            "pc:count": 4468750,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527508.4944,
                "count": 4468750,
                "maximum": -527237.7246,
                "minimum": -527772.4846,
                "name": "X",
                "position": 0,
                "stddev": 134.4485979,
                "variance": 18076.42548
              },
              {
                "average": 2093994.191,
                "count": 4468750,
                "maximum": 2094270.453,
                "minimum": 2093742.273,
                "name": "Y",
                "position": 1,
                "stddev": 124.26307,
                "variance": 15441.31056
              },
              {
                "average": 5.129763453,
                "count": 4468750,
                "maximum": 18.11663473,
                "minimum": 3.23663473,
                "name": "Z",
                "position": 2,
                "stddev": 0.7187374483,
                "variance": 0.5165835196
              },
              {
                "average": 37852.58288,
                "count": 4468750,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9963.876802,
                "variance": 99278840.92
              },
              {
                "average": 1.001221818,
                "count": 4468750,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03510569091,
                "variance": 0.001232409534
              },
              {
                "average": 1.002444084,
                "count": 4468750,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04974296605,
                "variance": 0.002474362672
              },
              {
                "average": 0.5052967832,
                "count": 4468750,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999719992,
                "variance": 0.249972
              },
              {
                "average": 0.0004368111888,
                "count": 4468750,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0208954656,
                "variance": 0.0004366204825
              },
              {
                "average": 1.252040727,
                "count": 4468750,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.512537748,
                "variance": 0.2626949432
              },
              {
                "average": -2.975181215,
                "count": 4468750,
                "maximum": 16.30800056,
                "minimum": -21.01799965,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.53650331,
                "variance": 111.0179019
              },
              {
                "average": 0.4898636084,
                "count": 4468750,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998972989,
                "variance": 0.2498973095
              },
              {
                "average": 229.3953828,
                "count": 4468750,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.28985325,
                "variance": 1961.591101
              },
              {
                "average": 249109632.4,
                "count": 4468750,
                "maximum": 249159596.5,
                "minimum": 249091777.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29371.57218,
                "variance": 862689252.6
              },
              {
                "average": 0.4898636084,
                "count": 4468750,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998972989,
                "variance": 0.2498973095
              },
              {
                "average": 0,
                "count": 4468750,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4468750,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4468750,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.220027972,
                "count": 4468750,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4142652556,
                "variance": 0.171615702
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527772.4846,
              2093742.273,
              3.23663473,
              -527237.7246,
              2094270.453,
              18.11663473
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527772.4846040364,
                    2093742.2731367338,
                    3.236634730006087
                  ],
                  [
                    -527772.4846040364,
                    2094270.453136734,
                    3.236634730006087
                  ],
                  [
                    -527237.7246040364,
                    2094270.453136734,
                    18.116634730006087
                  ],
                  [
                    -527237.7246040364,
                    2093742.2731367338,
                    18.116634730006087
                  ],
                  [
                    -527772.4846040364,
                    2093742.2731367338,
                    3.236634730006087
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:36+00:00",
            "end_time": "2019-08-06T01:56:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0630.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.72780744313718,
              68.34345818167613,
              4.058821502570227
            ],
            [
              -166.7302273017113,
              68.34815004688724,
              4.058821502570227
            ],
            [
              -166.71760115412314,
              68.34907143257263,
              20.878821502570226
            ],
            [
              -166.71518357707734,
              68.34437937802784,
              20.878821502570226
            ],
            [
              -166.72780744313718,
              68.34345818167613,
              4.058821502570227
            ]
          ]
        ]
      },
      "bbox": [
        -166.7302273,
        68.34345818,
        4.058821503,
        -166.7151836,
        68.34907143,
        20.8788215
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:09Z",
        "pc:count": 4495889,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525760.8057,
            "count": 4495889,
            "maximum": -525502.5644,
            "minimum": -526037.2844,
            "name": "X",
            "position": 0,
            "stddev": 131.8405472,
            "variance": 17381.9299
          },
          {
            "average": 2093241.918,
            "count": 4495889,
            "maximum": 2093494.213,
            "minimum": 2092966.033,
            "name": "Y",
            "position": 1,
            "stddev": 134.8940496,
            "variance": 18196.40462
          },
          {
            "average": 5.649010251,
            "count": 4495889,
            "maximum": 20.8788215,
            "minimum": 4.058821503,
            "name": "Z",
            "position": 2,
            "stddev": 0.8097278986,
            "variance": 0.6556592697
          },
          {
            "average": 29037.49125,
            "count": 4495889,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 7883.48309,
            "variance": 62149305.63
          },
          {
            "average": 1.005619578,
            "count": 4495889,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.07563441944,
            "variance": 0.005720565405
          },
          {
            "average": 1.011247609,
            "count": 4495889,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1073339581,
            "variance": 0.01152057857
          },
          {
            "average": 0.4981559821,
            "count": 4495889,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999966552,
            "variance": 0.2499966552
          },
          {
            "average": 0.0003618861587,
            "count": 4495889,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01901986534,
            "variance": 0.0003617552775
          },
          {
            "average": 1.318695146,
            "count": 4495889,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.7723468921,
            "variance": 0.5965197217
          },
          {
            "average": -2.621318834,
            "count": 4495889,
            "maximum": 16.07999992,
            "minimum": -21.04800034,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.21204245,
            "variance": 104.2858109
          },
          {
            "average": 0.4673651863,
            "count": 4495889,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4989338877,
            "variance": 0.2489350243
          },
          {
            "average": 225.6260446,
            "count": 4495889,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.49835535,
            "variance": 1892.106918
          },
          {
            "average": 249107627.4,
            "count": 4495889,
            "maximum": 249159569.3,
            "minimum": 249091557.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28512.92507,
            "variance": 812986896.2
          },
          {
            "average": 0.4673651863,
            "count": 4495889,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4989338877,
            "variance": 0.2489350243
          },
          {
            "average": 0,
            "count": 4495889,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4495889,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4495889,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.218347695,
            "count": 4495889,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4131246991,
            "variance": 0.170672017
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526037.2844,
          2092966.033,
          4.058821503,
          -525502.5644,
          2093494.213,
          20.8788215
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526037.2843977324,
                2092966.032930386,
                4.058821502570227
              ],
              [
                -526037.2843977324,
                2093494.2129303862,
                4.058821502570227
              ],
              [
                -525502.5643977324,
                2093494.2129303862,
                20.878821502570226
              ],
              [
                -525502.5643977324,
                2092966.032930386,
                20.878821502570226
              ],
              [
                -526037.2843977324,
                2092966.032930386,
                4.058821502570227
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:09+00:00",
        "end_time": "2019-08-06T01:52:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0630.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0630.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0630.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0630.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7302273,
            68.34345818,
            4.058821503,
            -166.7151836,
            68.34907143,
            20.8788215
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.72780744313718,
                  68.34345818167613,
                  4.058821502570227
                ],
                [
                  -166.7302273017113,
                  68.34815004688724,
                  4.058821502570227
                ],
                [
                  -166.71760115412314,
                  68.34907143257263,
                  20.878821502570226
                ],
                [
                  -166.71518357707734,
                  68.34437937802784,
                  20.878821502570226
                ],
                [
                  -166.72780744313718,
                  68.34345818167613,
                  4.058821502570227
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0630.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0630.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:09Z",
            "pc:count": 4495889,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525760.8057,
                "count": 4495889,
                "maximum": -525502.5644,
                "minimum": -526037.2844,
                "name": "X",
                "position": 0,
                "stddev": 131.8405472,
                "variance": 17381.9299
              },
              {
                "average": 2093241.918,
                "count": 4495889,
                "maximum": 2093494.213,
                "minimum": 2092966.033,
                "name": "Y",
                "position": 1,
                "stddev": 134.8940496,
                "variance": 18196.40462
              },
              {
                "average": 5.649010251,
                "count": 4495889,
                "maximum": 20.8788215,
                "minimum": 4.058821503,
                "name": "Z",
                "position": 2,
                "stddev": 0.8097278986,
                "variance": 0.6556592697
              },
              {
                "average": 29037.49125,
                "count": 4495889,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 7883.48309,
                "variance": 62149305.63
              },
              {
                "average": 1.005619578,
                "count": 4495889,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.07563441944,
                "variance": 0.005720565405
              },
              {
                "average": 1.011247609,
                "count": 4495889,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1073339581,
                "variance": 0.01152057857
              },
              {
                "average": 0.4981559821,
                "count": 4495889,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999966552,
                "variance": 0.2499966552
              },
              {
                "average": 0.0003618861587,
                "count": 4495889,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01901986534,
                "variance": 0.0003617552775
              },
              {
                "average": 1.318695146,
                "count": 4495889,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.7723468921,
                "variance": 0.5965197217
              },
              {
                "average": -2.621318834,
                "count": 4495889,
                "maximum": 16.07999992,
                "minimum": -21.04800034,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.21204245,
                "variance": 104.2858109
              },
              {
                "average": 0.4673651863,
                "count": 4495889,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4989338877,
                "variance": 0.2489350243
              },
              {
                "average": 225.6260446,
                "count": 4495889,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.49835535,
                "variance": 1892.106918
              },
              {
                "average": 249107627.4,
                "count": 4495889,
                "maximum": 249159569.3,
                "minimum": 249091557.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28512.92507,
                "variance": 812986896.2
              },
              {
                "average": 0.4673651863,
                "count": 4495889,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4989338877,
                "variance": 0.2489350243
              },
              {
                "average": 0,
                "count": 4495889,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4495889,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4495889,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.218347695,
                "count": 4495889,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4131246991,
                "variance": 0.170672017
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526037.2844,
              2092966.033,
              4.058821503,
              -525502.5644,
              2093494.213,
              20.8788215
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526037.2843977324,
                    2092966.032930386,
                    4.058821502570227
                  ],
                  [
                    -526037.2843977324,
                    2093494.2129303862,
                    4.058821502570227
                  ],
                  [
                    -525502.5643977324,
                    2093494.2129303862,
                    20.878821502570226
                  ],
                  [
                    -525502.5643977324,
                    2092966.032930386,
                    20.878821502570226
                  ],
                  [
                    -526037.2843977324,
                    2092966.032930386,
                    4.058821502570227
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:09+00:00",
            "end_time": "2019-08-06T01:52:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0693.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7279383184021,
              68.34755724369558,
              -1.68031815192308
            ],
            [
              -166.73035859863185,
              68.35224917981068,
              -1.68031815192308
            ],
            [
              -166.71773652449986,
              68.35317014129551,
              19.479681848076922
            ],
            [
              -166.7153185254337,
              68.3484780158913,
              19.479681848076922
            ],
            [
              -166.7279383184021,
              68.34755724369558,
              -1.68031815192308
            ]
          ]
        ]
      },
      "bbox": [
        -166.7303586,
        68.34755724,
        -1.680318152,
        -166.7153185,
        68.35317014,
        19.47968185
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:09Z",
        "pc:count": 4623693,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525698.2105,
            "count": 4623693,
            "maximum": -525421.8791,
            "minimum": -525956.3391,
            "name": "X",
            "position": 0,
            "stddev": 130.1356552,
            "variance": 16935.28875
          },
          {
            "average": 2093657.024,
            "count": 4623693,
            "maximum": 2093939.952,
            "minimum": 2093411.772,
            "name": "Y",
            "position": 1,
            "stddev": 120.5633901,
            "variance": 14535.53104
          },
          {
            "average": 4.523159834,
            "count": 4623693,
            "maximum": 19.47968185,
            "minimum": -1.680318152,
            "name": "Z",
            "position": 2,
            "stddev": 1.886555905,
            "variance": 3.559093182
          },
          {
            "average": 36888.04158,
            "count": 4623693,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 13106.11221,
            "variance": 171770177.2
          },
          {
            "average": 1.014069706,
            "count": 4623693,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.1192238881,
            "variance": 0.01421433551
          },
          {
            "average": 1.028129463,
            "count": 4623693,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.1684142416,
            "variance": 0.02836335678
          },
          {
            "average": 0.5139971447,
            "count": 4623693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4998040956,
            "variance": 0.249804134
          },
          {
            "average": 0.0004851100625,
            "count": 4623693,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02201987365,
            "variance": 0.0004848748355
          },
          {
            "average": 1.721239494,
            "count": 4623693,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.772826522,
            "variance": 3.142913877
          },
          {
            "average": -3.667858188,
            "count": 4623693,
            "maximum": 16.51799965,
            "minimum": -21.22200012,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.12387248,
            "variance": 123.740539
          },
          {
            "average": 0.5180220659,
            "count": 4623693,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996751536,
            "variance": 0.2496752591
          },
          {
            "average": 226.6387634,
            "count": 4623693,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.02276824,
            "variance": 1850.958587
          },
          {
            "average": 249107890.8,
            "count": 4623693,
            "maximum": 249159569,
            "minimum": 249091806.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28456.23259,
            "variance": 809757173.5
          },
          {
            "average": 0.5180220659,
            "count": 4623693,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996751536,
            "variance": 0.2496752591
          },
          {
            "average": 0,
            "count": 4623693,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4623693,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4623693,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2530455634,
            "count": 4623693,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4347568828,
            "variance": 0.1890135471
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525956.3391,
          2093411.772,
          -1.680318152,
          -525421.8791,
          2093939.952,
          19.47968185
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525956.3390599408,
                2093411.771750964,
                -1.68031815192308
              ],
              [
                -525956.3390599408,
                2093939.9517509642,
                -1.68031815192308
              ],
              [
                -525421.8790599408,
                2093939.9517509642,
                19.479681848076922
              ],
              [
                -525421.8790599408,
                2093411.771750964,
                19.479681848076922
              ],
              [
                -525956.3390599408,
                2093411.771750964,
                -1.68031815192308
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:09+00:00",
        "end_time": "2019-08-06T01:56:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0693.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0693.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0693.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0693.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7303586,
            68.34755724,
            -1.680318152,
            -166.7153185,
            68.35317014,
            19.47968185
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7279383184021,
                  68.34755724369558,
                  -1.68031815192308
                ],
                [
                  -166.73035859863185,
                  68.35224917981068,
                  -1.68031815192308
                ],
                [
                  -166.71773652449986,
                  68.35317014129551,
                  19.479681848076922
                ],
                [
                  -166.7153185254337,
                  68.3484780158913,
                  19.479681848076922
                ],
                [
                  -166.7279383184021,
                  68.34755724369558,
                  -1.68031815192308
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0693.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0693.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:09Z",
            "pc:count": 4623693,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525698.2105,
                "count": 4623693,
                "maximum": -525421.8791,
                "minimum": -525956.3391,
                "name": "X",
                "position": 0,
                "stddev": 130.1356552,
                "variance": 16935.28875
              },
              {
                "average": 2093657.024,
                "count": 4623693,
                "maximum": 2093939.952,
                "minimum": 2093411.772,
                "name": "Y",
                "position": 1,
                "stddev": 120.5633901,
                "variance": 14535.53104
              },
              {
                "average": 4.523159834,
                "count": 4623693,
                "maximum": 19.47968185,
                "minimum": -1.680318152,
                "name": "Z",
                "position": 2,
                "stddev": 1.886555905,
                "variance": 3.559093182
              },
              {
                "average": 36888.04158,
                "count": 4623693,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 13106.11221,
                "variance": 171770177.2
              },
              {
                "average": 1.014069706,
                "count": 4623693,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.1192238881,
                "variance": 0.01421433551
              },
              {
                "average": 1.028129463,
                "count": 4623693,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.1684142416,
                "variance": 0.02836335678
              },
              {
                "average": 0.5139971447,
                "count": 4623693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4998040956,
                "variance": 0.249804134
              },
              {
                "average": 0.0004851100625,
                "count": 4623693,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02201987365,
                "variance": 0.0004848748355
              },
              {
                "average": 1.721239494,
                "count": 4623693,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.772826522,
                "variance": 3.142913877
              },
              {
                "average": -3.667858188,
                "count": 4623693,
                "maximum": 16.51799965,
                "minimum": -21.22200012,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.12387248,
                "variance": 123.740539
              },
              {
                "average": 0.5180220659,
                "count": 4623693,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996751536,
                "variance": 0.2496752591
              },
              {
                "average": 226.6387634,
                "count": 4623693,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.02276824,
                "variance": 1850.958587
              },
              {
                "average": 249107890.8,
                "count": 4623693,
                "maximum": 249159569,
                "minimum": 249091806.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28456.23259,
                "variance": 809757173.5
              },
              {
                "average": 0.5180220659,
                "count": 4623693,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996751536,
                "variance": 0.2496752591
              },
              {
                "average": 0,
                "count": 4623693,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4623693,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4623693,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2530455634,
                "count": 4623693,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4347568828,
                "variance": 0.1890135471
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525956.3391,
              2093411.772,
              -1.680318152,
              -525421.8791,
              2093939.952,
              19.47968185
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525956.3390599408,
                    2093411.771750964,
                    -1.68031815192308
                  ],
                  [
                    -525956.3390599408,
                    2093939.9517509642,
                    -1.68031815192308
                  ],
                  [
                    -525421.8790599408,
                    2093939.9517509642,
                    19.479681848076922
                  ],
                  [
                    -525421.8790599408,
                    2093411.771750964,
                    19.479681848076922
                  ],
                  [
                    -525956.3390599408,
                    2093411.771750964,
                    -1.68031815192308
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:09+00:00",
            "end_time": "2019-08-06T01:56:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0623.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.80548645591892,
              68.34310228842051,
              2.400424376162803
            ],
            [
              -166.80792077321672,
              68.34779290143666,
              2.400424376162803
            ],
            [
              -166.79530051150368,
              68.34871963449955,
              132.7004243761628
            ],
            [
              -166.79286847291402,
              68.34402883110515,
              132.7004243761628
            ],
            [
              -166.80548645591892,
              68.34310228842051,
              2.400424376162803
            ]
          ]
        ]
      },
      "bbox": [
        -166.8079208,
        68.34310229,
        2.400424376,
        -166.7928685,
        68.34871963,
        132.7004244
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:57Z",
        "pc:count": 4308612,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528949.3622,
            "count": 4308612,
            "maximum": -528680.9123,
            "minimum": -529215.5123,
            "name": "X",
            "position": 0,
            "stddev": 133.6947861,
            "variance": 17874.29583
          },
          {
            "average": 2093822.056,
            "count": 4308612,
            "maximum": 2094072.735,
            "minimum": 2093544.575,
            "name": "Y",
            "position": 1,
            "stddev": 124.1028831,
            "variance": 15401.52559
          },
          {
            "average": 4.855956211,
            "count": 4308612,
            "maximum": 132.7004244,
            "minimum": 2.400424376,
            "name": "Z",
            "position": 2,
            "stddev": 0.6033791626,
            "variance": 0.3640664138
          },
          {
            "average": 32489.4762,
            "count": 4308612,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 10052.35578,
            "variance": 101049856.8
          },
          {
            "average": 1.000639185,
            "count": 4308612,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02567490543,
            "variance": 0.000659200769
          },
          {
            "average": 1.00127837,
            "count": 4308612,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0365788004,
            "variance": 0.001338008639
          },
          {
            "average": 0.5078551979,
            "count": 4308612,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999383501,
            "variance": 0.2499383539
          },
          {
            "average": 0.0005006252594,
            "count": 4308612,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02236905787,
            "variance": 0.0005003747498
          },
          {
            "average": 1.241662048,
            "count": 4308612,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4590571943,
            "variance": 0.2107335076
          },
          {
            "average": -3.46997257,
            "count": 4308612,
            "maximum": 16.29000092,
            "minimum": -21.24600029,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.88024892,
            "variance": 118.3798166
          },
          {
            "average": 0.493923101,
            "count": 4308612,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499963128,
            "variance": 0.2499631293
          },
          {
            "average": 229.6931791,
            "count": 4308612,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.37746069,
            "variance": 2059.113938
          },
          {
            "average": 249110161.2,
            "count": 4308612,
            "maximum": 249159617.1,
            "minimum": 249091613.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29859.64867,
            "variance": 891598618.5
          },
          {
            "average": 0.493923101,
            "count": 4308612,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499963128,
            "variance": 0.2499631293
          },
          {
            "average": 0,
            "count": 4308612,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4308612,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4308612,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2397600434,
            "count": 4308612,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4269370062,
            "variance": 0.1822752073
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -529215.5123,
          2093544.575,
          2.400424376,
          -528680.9123,
          2094072.735,
          132.7004244
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -529215.5123091883,
                2093544.5753508504,
                2.400424376162803
              ],
              [
                -529215.5123091883,
                2094072.7353508505,
                2.400424376162803
              ],
              [
                -528680.9123091882,
                2094072.7353508505,
                132.7004243761628
              ],
              [
                -528680.9123091882,
                2093544.5753508504,
                132.7004243761628
              ],
              [
                -529215.5123091883,
                2093544.5753508504,
                2.400424376162803
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:57+00:00",
        "end_time": "2019-08-06T01:53:33+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0623.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0623.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0623.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0623.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8079208,
            68.34310229,
            2.400424376,
            -166.7928685,
            68.34871963,
            132.7004244
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.80548645591892,
                  68.34310228842051,
                  2.400424376162803
                ],
                [
                  -166.80792077321672,
                  68.34779290143666,
                  2.400424376162803
                ],
                [
                  -166.79530051150368,
                  68.34871963449955,
                  132.7004243761628
                ],
                [
                  -166.79286847291402,
                  68.34402883110515,
                  132.7004243761628
                ],
                [
                  -166.80548645591892,
                  68.34310228842051,
                  2.400424376162803
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0623.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0623.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:57Z",
            "pc:count": 4308612,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528949.3622,
                "count": 4308612,
                "maximum": -528680.9123,
                "minimum": -529215.5123,
                "name": "X",
                "position": 0,
                "stddev": 133.6947861,
                "variance": 17874.29583
              },
              {
                "average": 2093822.056,
                "count": 4308612,
                "maximum": 2094072.735,
                "minimum": 2093544.575,
                "name": "Y",
                "position": 1,
                "stddev": 124.1028831,
                "variance": 15401.52559
              },
              {
                "average": 4.855956211,
                "count": 4308612,
                "maximum": 132.7004244,
                "minimum": 2.400424376,
                "name": "Z",
                "position": 2,
                "stddev": 0.6033791626,
                "variance": 0.3640664138
              },
              {
                "average": 32489.4762,
                "count": 4308612,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 10052.35578,
                "variance": 101049856.8
              },
              {
                "average": 1.000639185,
                "count": 4308612,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02567490543,
                "variance": 0.000659200769
              },
              {
                "average": 1.00127837,
                "count": 4308612,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0365788004,
                "variance": 0.001338008639
              },
              {
                "average": 0.5078551979,
                "count": 4308612,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999383501,
                "variance": 0.2499383539
              },
              {
                "average": 0.0005006252594,
                "count": 4308612,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02236905787,
                "variance": 0.0005003747498
              },
              {
                "average": 1.241662048,
                "count": 4308612,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4590571943,
                "variance": 0.2107335076
              },
              {
                "average": -3.46997257,
                "count": 4308612,
                "maximum": 16.29000092,
                "minimum": -21.24600029,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.88024892,
                "variance": 118.3798166
              },
              {
                "average": 0.493923101,
                "count": 4308612,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499963128,
                "variance": 0.2499631293
              },
              {
                "average": 229.6931791,
                "count": 4308612,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.37746069,
                "variance": 2059.113938
              },
              {
                "average": 249110161.2,
                "count": 4308612,
                "maximum": 249159617.1,
                "minimum": 249091613.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29859.64867,
                "variance": 891598618.5
              },
              {
                "average": 0.493923101,
                "count": 4308612,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499963128,
                "variance": 0.2499631293
              },
              {
                "average": 0,
                "count": 4308612,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4308612,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4308612,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2397600434,
                "count": 4308612,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4269370062,
                "variance": 0.1822752073
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -529215.5123,
              2093544.575,
              2.400424376,
              -528680.9123,
              2094072.735,
              132.7004244
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -529215.5123091883,
                    2093544.5753508504,
                    2.400424376162803
                  ],
                  [
                    -529215.5123091883,
                    2094072.7353508505,
                    2.400424376162803
                  ],
                  [
                    -528680.9123091882,
                    2094072.7353508505,
                    132.7004243761628
                  ],
                  [
                    -528680.9123091882,
                    2093544.5753508504,
                    132.7004243761628
                  ],
                  [
                    -529215.5123091883,
                    2093544.5753508504,
                    2.400424376162803
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:57+00:00",
            "end_time": "2019-08-06T01:53:33+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0690.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.76123653188202,
              68.34740955910924,
              3.810922143066023
            ],
            [
              -166.76366286772216,
              68.35210068015571,
              3.810922143066023
            ],
            [
              -166.75103406836948,
              68.35302460914122,
              457.390922143066
            ],
            [
              -166.74861001402076,
              68.34833329823009,
              457.390922143066
            ],
            [
              -166.76123653188202,
              68.34740955910924,
              3.810922143066023
            ]
          ]
        ]
      },
      "bbox": [
        -166.7636629,
        68.34740956,
        3.810922143,
        -166.74861,
        68.35302461,
        457.3909221
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:29Z",
        "pc:count": 4202471,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527053.2999,
            "count": 4202471,
            "maximum": -526783.6826,
            "minimum": -527318.4826,
            "name": "X",
            "position": 0,
            "stddev": 133.6026525,
            "variance": 17849.66876
          },
          {
            "average": 2093911.506,
            "count": 4202471,
            "maximum": 2094187.944,
            "minimum": 2093659.804,
            "name": "Y",
            "position": 1,
            "stddev": 122.684455,
            "variance": 15051.4755
          },
          {
            "average": 5.082251254,
            "count": 4202471,
            "maximum": 457.3909221,
            "minimum": 3.810922143,
            "name": "Z",
            "position": 2,
            "stddev": 0.4358769498,
            "variance": 0.1899887154
          },
          {
            "average": 39449.6279,
            "count": 4202471,
            "maximum": 65535,
            "minimum": 16912,
            "name": "Intensity",
            "position": 3,
            "stddev": 10029.88823,
            "variance": 100598657.9
          },
          {
            "average": 1,
            "count": 4202471,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1.000000238,
            "count": 4202471,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.0004878065611,
            "variance": 2.379552411e-07
          },
          {
            "average": 0.5083214138,
            "count": 4202471,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999308088,
            "variance": 0.2499308135
          },
          {
            "average": 0.0004778141241,
            "count": 4202471,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02185373953,
            "variance": 0.0004775859314
          },
          {
            "average": 1.230593144,
            "count": 4202471,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4212803074,
            "variance": 0.1774770974
          },
          {
            "average": -3.581727412,
            "count": 4202471,
            "maximum": 16.31999969,
            "minimum": -21.12599945,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.82011457,
            "variance": 117.0748793
          },
          {
            "average": 0.4959429821,
            "count": 4202471,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999835998,
            "variance": 0.2499836001
          },
          {
            "average": 230.8691772,
            "count": 4202471,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 45.16263437,
            "variance": 2039.663543
          },
          {
            "average": 249110640.2,
            "count": 4202471,
            "maximum": 249159589.8,
            "minimum": 249091784.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 29925.36706,
            "variance": 895527593.6
          },
          {
            "average": 0.4959429821,
            "count": 4202471,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999835998,
            "variance": 0.2499836001
          },
          {
            "average": 0,
            "count": 4202471,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4202471,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4202471,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.240380243,
            "count": 4202471,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4273144336,
            "variance": 0.1825976252
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527318.4826,
          2093659.804,
          3.810922143,
          -526783.6826,
          2094187.944,
          457.3909221
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527318.482606961,
                2093659.8042416421,
                3.810922143066023
              ],
              [
                -527318.482606961,
                2094187.9442416423,
                3.810922143066023
              ],
              [
                -526783.682606961,
                2094187.9442416423,
                457.390922143066
              ],
              [
                -526783.682606961,
                2093659.8042416421,
                457.390922143066
              ],
              [
                -527318.482606961,
                2093659.8042416421,
                3.810922143066023
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:29+00:00",
        "end_time": "2019-08-06T01:56:24+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0690.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0690.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0690.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0690.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7636629,
            68.34740956,
            3.810922143,
            -166.74861,
            68.35302461,
            457.3909221
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.76123653188202,
                  68.34740955910924,
                  3.810922143066023
                ],
                [
                  -166.76366286772216,
                  68.35210068015571,
                  3.810922143066023
                ],
                [
                  -166.75103406836948,
                  68.35302460914122,
                  457.390922143066
                ],
                [
                  -166.74861001402076,
                  68.34833329823009,
                  457.390922143066
                ],
                [
                  -166.76123653188202,
                  68.34740955910924,
                  3.810922143066023
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0690.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0690.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:29Z",
            "pc:count": 4202471,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527053.2999,
                "count": 4202471,
                "maximum": -526783.6826,
                "minimum": -527318.4826,
                "name": "X",
                "position": 0,
                "stddev": 133.6026525,
                "variance": 17849.66876
              },
              {
                "average": 2093911.506,
                "count": 4202471,
                "maximum": 2094187.944,
                "minimum": 2093659.804,
                "name": "Y",
                "position": 1,
                "stddev": 122.684455,
                "variance": 15051.4755
              },
              {
                "average": 5.082251254,
                "count": 4202471,
                "maximum": 457.3909221,
                "minimum": 3.810922143,
                "name": "Z",
                "position": 2,
                "stddev": 0.4358769498,
                "variance": 0.1899887154
              },
              {
                "average": 39449.6279,
                "count": 4202471,
                "maximum": 65535,
                "minimum": 16912,
                "name": "Intensity",
                "position": 3,
                "stddev": 10029.88823,
                "variance": 100598657.9
              },
              {
                "average": 1,
                "count": 4202471,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1.000000238,
                "count": 4202471,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.0004878065611,
                "variance": 2.379552411e-07
              },
              {
                "average": 0.5083214138,
                "count": 4202471,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999308088,
                "variance": 0.2499308135
              },
              {
                "average": 0.0004778141241,
                "count": 4202471,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02185373953,
                "variance": 0.0004775859314
              },
              {
                "average": 1.230593144,
                "count": 4202471,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4212803074,
                "variance": 0.1774770974
              },
              {
                "average": -3.581727412,
                "count": 4202471,
                "maximum": 16.31999969,
                "minimum": -21.12599945,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.82011457,
                "variance": 117.0748793
              },
              {
                "average": 0.4959429821,
                "count": 4202471,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999835998,
                "variance": 0.2499836001
              },
              {
                "average": 230.8691772,
                "count": 4202471,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 45.16263437,
                "variance": 2039.663543
              },
              {
                "average": 249110640.2,
                "count": 4202471,
                "maximum": 249159589.8,
                "minimum": 249091784.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 29925.36706,
                "variance": 895527593.6
              },
              {
                "average": 0.4959429821,
                "count": 4202471,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999835998,
                "variance": 0.2499836001
              },
              {
                "average": 0,
                "count": 4202471,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4202471,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4202471,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.240380243,
                "count": 4202471,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4273144336,
                "variance": 0.1825976252
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527318.4826,
              2093659.804,
              3.810922143,
              -526783.6826,
              2094187.944,
              457.3909221
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527318.482606961,
                    2093659.8042416421,
                    3.810922143066023
                  ],
                  [
                    -527318.482606961,
                    2094187.9442416423,
                    3.810922143066023
                  ],
                  [
                    -526783.682606961,
                    2094187.9442416423,
                    457.390922143066
                  ],
                  [
                    -526783.682606961,
                    2093659.8042416421,
                    457.390922143066
                  ],
                  [
                    -527318.482606961,
                    2093659.8042416421,
                    3.810922143066023
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:29+00:00",
            "end_time": "2019-08-06T01:56:24+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0631.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.71671090112645,
              68.34350780690214,
              3.30863257168377
            ],
            [
              -166.7191281312501,
              68.34819875906197,
              3.30863257168377
            ],
            [
              -166.70650107780807,
              68.34911938542963,
              51.008632571683776
            ],
            [
              -166.7040861290958,
              68.3444282441285,
              51.008632571683776
            ],
            [
              -166.71671090112645,
              68.34350780690214,
              3.30863257168377
            ]
          ]
        ]
      },
      "bbox": [
        -166.7191281,
        68.34350781,
        3.308632572,
        -166.7040861,
        68.34911939,
        51.00863257
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:02Z",
        "pc:count": 4444215,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525318.6196,
            "count": 4444215,
            "maximum": -525048.5047,
            "minimum": -525583.2447,
            "name": "X",
            "position": 0,
            "stddev": 133.2769091,
            "variance": 17762.73449
          },
          {
            "average": 2093160.613,
            "count": 4444215,
            "maximum": 2093411.62,
            "minimum": 2092883.56,
            "name": "Y",
            "position": 1,
            "stddev": 133.8952604,
            "variance": 17927.94076
          },
          {
            "average": 5.330684408,
            "count": 4444215,
            "maximum": 51.00863257,
            "minimum": 3.308632572,
            "name": "Z",
            "position": 2,
            "stddev": 0.4917486041,
            "variance": 0.2418166897
          },
          {
            "average": 32987.97645,
            "count": 4444215,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9821.785173,
            "variance": 96467463.98
          },
          {
            "average": 1.00029544,
            "count": 4444215,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.01718583817,
            "variance": 0.0002953530336
          },
          {
            "average": 1.000591556,
            "count": 4444215,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02431472258,
            "variance": 0.0005912057341
          },
          {
            "average": 0.4956549132,
            "count": 4444215,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999811761,
            "variance": 0.2499811765
          },
          {
            "average": 0.0003210915764,
            "count": 4444215,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01791615329,
            "variance": 0.0003209885488
          },
          {
            "average": 1.234034582,
            "count": 4444215,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4395555823,
            "variance": 0.1932091099
          },
          {
            "average": -2.053335818,
            "count": 4444215,
            "maximum": 15.49800014,
            "minimum": -21.0720005,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.06063387,
            "variance": 101.2163539
          },
          {
            "average": 0.4733072095,
            "count": 4444215,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4992870427,
            "variance": 0.249287551
          },
          {
            "average": 225.7160806,
            "count": 4444215,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 43.53321702,
            "variance": 1895.140984
          },
          {
            "average": 249107682.5,
            "count": 4444215,
            "maximum": 249159562.1,
            "minimum": 249091550.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28543.20453,
            "variance": 814714525.1
          },
          {
            "average": 0.4733072095,
            "count": 4444215,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4992870427,
            "variance": 0.249287551
          },
          {
            "average": 0,
            "count": 4444215,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4444215,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4444215,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1840406011,
            "count": 4444215,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3875173442,
            "variance": 0.150169692
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525583.2447,
          2092883.56,
          3.308632572,
          -525048.5047,
          2093411.62,
          51.00863257
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525583.2447222645,
                2092883.559844916,
                3.30863257168377
              ],
              [
                -525583.2447222645,
                2093411.619844916,
                3.30863257168377
              ],
              [
                -525048.5047222645,
                2093411.619844916,
                51.008632571683776
              ],
              [
                -525048.5047222645,
                2092883.559844916,
                51.008632571683776
              ],
              [
                -525583.2447222645,
                2092883.559844916,
                3.30863257168377
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:02+00:00",
        "end_time": "2019-08-06T01:52:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0631.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0631.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0631.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0631.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7191281,
            68.34350781,
            3.308632572,
            -166.7040861,
            68.34911939,
            51.00863257
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.71671090112645,
                  68.34350780690214,
                  3.30863257168377
                ],
                [
                  -166.7191281312501,
                  68.34819875906197,
                  3.30863257168377
                ],
                [
                  -166.70650107780807,
                  68.34911938542963,
                  51.008632571683776
                ],
                [
                  -166.7040861290958,
                  68.3444282441285,
                  51.008632571683776
                ],
                [
                  -166.71671090112645,
                  68.34350780690214,
                  3.30863257168377
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0631.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0631.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:02Z",
            "pc:count": 4444215,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525318.6196,
                "count": 4444215,
                "maximum": -525048.5047,
                "minimum": -525583.2447,
                "name": "X",
                "position": 0,
                "stddev": 133.2769091,
                "variance": 17762.73449
              },
              {
                "average": 2093160.613,
                "count": 4444215,
                "maximum": 2093411.62,
                "minimum": 2092883.56,
                "name": "Y",
                "position": 1,
                "stddev": 133.8952604,
                "variance": 17927.94076
              },
              {
                "average": 5.330684408,
                "count": 4444215,
                "maximum": 51.00863257,
                "minimum": 3.308632572,
                "name": "Z",
                "position": 2,
                "stddev": 0.4917486041,
                "variance": 0.2418166897
              },
              {
                "average": 32987.97645,
                "count": 4444215,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9821.785173,
                "variance": 96467463.98
              },
              {
                "average": 1.00029544,
                "count": 4444215,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.01718583817,
                "variance": 0.0002953530336
              },
              {
                "average": 1.000591556,
                "count": 4444215,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02431472258,
                "variance": 0.0005912057341
              },
              {
                "average": 0.4956549132,
                "count": 4444215,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999811761,
                "variance": 0.2499811765
              },
              {
                "average": 0.0003210915764,
                "count": 4444215,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01791615329,
                "variance": 0.0003209885488
              },
              {
                "average": 1.234034582,
                "count": 4444215,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4395555823,
                "variance": 0.1932091099
              },
              {
                "average": -2.053335818,
                "count": 4444215,
                "maximum": 15.49800014,
                "minimum": -21.0720005,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.06063387,
                "variance": 101.2163539
              },
              {
                "average": 0.4733072095,
                "count": 4444215,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4992870427,
                "variance": 0.249287551
              },
              {
                "average": 225.7160806,
                "count": 4444215,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 43.53321702,
                "variance": 1895.140984
              },
              {
                "average": 249107682.5,
                "count": 4444215,
                "maximum": 249159562.1,
                "minimum": 249091550.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28543.20453,
                "variance": 814714525.1
              },
              {
                "average": 0.4733072095,
                "count": 4444215,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4992870427,
                "variance": 0.249287551
              },
              {
                "average": 0,
                "count": 4444215,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4444215,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4444215,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1840406011,
                "count": 4444215,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3875173442,
                "variance": 0.150169692
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525583.2447,
              2092883.56,
              3.308632572,
              -525048.5047,
              2093411.62,
              51.00863257
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525583.2447222645,
                    2092883.559844916,
                    3.30863257168377
                  ],
                  [
                    -525583.2447222645,
                    2093411.619844916,
                    3.30863257168377
                  ],
                  [
                    -525048.5047222645,
                    2093411.619844916,
                    51.008632571683776
                  ],
                  [
                    -525048.5047222645,
                    2092883.559844916,
                    51.008632571683776
                  ],
                  [
                    -525583.2447222645,
                    2092883.559844916,
                    3.30863257168377
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:02+00:00",
            "end_time": "2019-08-06T01:52:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0626.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.77219659700518,
              68.34325895573502,
              2.015494399084503
            ],
            [
              -166.7746246795051,
              68.34795003010831,
              2.015494399084503
            ],
            [
              -166.76199885571944,
              68.34887469419228,
              16.675494399084503
            ],
            [
              -166.75957305364966,
              68.34418342984557,
              16.675494399084503
            ],
            [
              -166.77219659700518,
              68.34325895573502,
              2.015494399084503
            ]
          ]
        ]
      },
      "bbox": [
        -166.7746247,
        68.34325896,
        2.015494399,
        -166.7595731,
        68.34887469,
        16.6754944
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:36Z",
        "pc:count": 4574941,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527589.9014,
            "count": 4574941,
            "maximum": -527318.6713,
            "minimum": -527853.4513,
            "name": "X",
            "position": 0,
            "stddev": 130.9610022,
            "variance": 17150.7841
          },
          {
            "average": 2093578.42,
            "count": 4574941,
            "maximum": 2093824.791,
            "minimum": 2093296.631,
            "name": "Y",
            "position": 1,
            "stddev": 127.1055305,
            "variance": 16155.81589
          },
          {
            "average": 5.137586232,
            "count": 4574941,
            "maximum": 16.6754944,
            "minimum": 2.015494399,
            "name": "Z",
            "position": 2,
            "stddev": 0.6516570281,
            "variance": 0.4246568823
          },
          {
            "average": 27755.31058,
            "count": 4574941,
            "maximum": 65535,
            "minimum": 1626,
            "name": "Intensity",
            "position": 3,
            "stddev": 6788.934587,
            "variance": 46089632.83
          },
          {
            "average": 1.000784054,
            "count": 4574941,
            "maximum": 4,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02843931753,
            "variance": 0.0008087947818
          },
          {
            "average": 1.001564392,
            "count": 4574941,
            "maximum": 4,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.04046154992,
            "variance": 0.001637137022
          },
          {
            "average": 0.5022353294,
            "count": 4574941,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999950579,
            "variance": 0.2499950579
          },
          {
            "average": 0.0003951963534,
            "count": 4574941,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.01987561973,
            "variance": 0.0003950402595
          },
          {
            "average": 1.232042555,
            "count": 4574941,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4311601293,
            "variance": 0.1858990571
          },
          {
            "average": -2.758260064,
            "count": 4574941,
            "maximum": 16.15200043,
            "minimum": -21.09600067,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.62738575,
            "variance": 112.9413279
          },
          {
            "average": 0.4748002215,
            "count": 4574941,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499364622,
            "variance": 0.2493650257
          },
          {
            "average": 227.0726311,
            "count": 4574941,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.12415946,
            "variance": 1946.941448
          },
          {
            "average": 249108511.9,
            "count": 4574941,
            "maximum": 249159596.8,
            "minimum": 249091590.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28985.00747,
            "variance": 840130658.2
          },
          {
            "average": 0.4748002215,
            "count": 4574941,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499364622,
            "variance": 0.2493650257
          },
          {
            "average": 0,
            "count": 4574941,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4574941,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 4574941,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2322790611,
            "count": 4574941,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4222860853,
            "variance": 0.1783255378
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527853.4513,
          2093296.631,
          2.015494399,
          -527318.6713,
          2093824.791,
          16.6754944
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527853.4512922314,
                2093296.630709504,
                2.015494399084503
              ],
              [
                -527853.4512922314,
                2093824.7907095042,
                2.015494399084503
              ],
              [
                -527318.6712922314,
                2093824.7907095042,
                16.675494399084503
              ],
              [
                -527318.6712922314,
                2093296.630709504,
                16.675494399084503
              ],
              [
                -527853.4512922314,
                2093296.630709504,
                2.015494399084503
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:36+00:00",
        "end_time": "2019-08-06T01:53:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0626.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0626.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0626.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0626.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7746247,
            68.34325896,
            2.015494399,
            -166.7595731,
            68.34887469,
            16.6754944
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.77219659700518,
                  68.34325895573502,
                  2.015494399084503
                ],
                [
                  -166.7746246795051,
                  68.34795003010831,
                  2.015494399084503
                ],
                [
                  -166.76199885571944,
                  68.34887469419228,
                  16.675494399084503
                ],
                [
                  -166.75957305364966,
                  68.34418342984557,
                  16.675494399084503
                ],
                [
                  -166.77219659700518,
                  68.34325895573502,
                  2.015494399084503
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0626.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0626.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:36Z",
            "pc:count": 4574941,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527589.9014,
                "count": 4574941,
                "maximum": -527318.6713,
                "minimum": -527853.4513,
                "name": "X",
                "position": 0,
                "stddev": 130.9610022,
                "variance": 17150.7841
              },
              {
                "average": 2093578.42,
                "count": 4574941,
                "maximum": 2093824.791,
                "minimum": 2093296.631,
                "name": "Y",
                "position": 1,
                "stddev": 127.1055305,
                "variance": 16155.81589
              },
              {
                "average": 5.137586232,
                "count": 4574941,
                "maximum": 16.6754944,
                "minimum": 2.015494399,
                "name": "Z",
                "position": 2,
                "stddev": 0.6516570281,
                "variance": 0.4246568823
              },
              {
                "average": 27755.31058,
                "count": 4574941,
                "maximum": 65535,
                "minimum": 1626,
                "name": "Intensity",
                "position": 3,
                "stddev": 6788.934587,
                "variance": 46089632.83
              },
              {
                "average": 1.000784054,
                "count": 4574941,
                "maximum": 4,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02843931753,
                "variance": 0.0008087947818
              },
              {
                "average": 1.001564392,
                "count": 4574941,
                "maximum": 4,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.04046154992,
                "variance": 0.001637137022
              },
              {
                "average": 0.5022353294,
                "count": 4574941,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999950579,
                "variance": 0.2499950579
              },
              {
                "average": 0.0003951963534,
                "count": 4574941,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.01987561973,
                "variance": 0.0003950402595
              },
              {
                "average": 1.232042555,
                "count": 4574941,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4311601293,
                "variance": 0.1858990571
              },
              {
                "average": -2.758260064,
                "count": 4574941,
                "maximum": 16.15200043,
                "minimum": -21.09600067,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.62738575,
                "variance": 112.9413279
              },
              {
                "average": 0.4748002215,
                "count": 4574941,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499364622,
                "variance": 0.2493650257
              },
              {
                "average": 227.0726311,
                "count": 4574941,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.12415946,
                "variance": 1946.941448
              },
              {
                "average": 249108511.9,
                "count": 4574941,
                "maximum": 249159596.8,
                "minimum": 249091590.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28985.00747,
                "variance": 840130658.2
              },
              {
                "average": 0.4748002215,
                "count": 4574941,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499364622,
                "variance": 0.2493650257
              },
              {
                "average": 0,
                "count": 4574941,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4574941,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 4574941,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2322790611,
                "count": 4574941,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4222860853,
                "variance": 0.1783255378
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527853.4513,
              2093296.631,
              2.015494399,
              -527318.6713,
              2093824.791,
              16.6754944
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527853.4512922314,
                    2093296.630709504,
                    2.015494399084503
                  ],
                  [
                    -527853.4512922314,
                    2093824.7907095042,
                    2.015494399084503
                  ],
                  [
                    -527318.6712922314,
                    2093824.7907095042,
                    16.675494399084503
                  ],
                  [
                    -527318.6712922314,
                    2093296.630709504,
                    16.675494399084503
                  ],
                  [
                    -527853.4512922314,
                    2093296.630709504,
                    2.015494399084503
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:36+00:00",
            "end_time": "2019-08-06T01:53:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0694.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7168420471975,
              68.34760523169444,
              0.982562309197118
            ],
            [
              -166.71925951526487,
              68.35229589937202,
              0.982562309197118
            ],
            [
              -166.70672864721348,
              68.35320939062578,
              9.22256230919712
            ],
            [
              -166.70431344337476,
              68.34851853524484,
              9.22256230919712
            ],
            [
              -166.7168420471975,
              68.34760523169444,
              0.982562309197118
            ]
          ]
        ]
      },
      "bbox": [
        -166.7192595,
        68.34760523,
        0.9825623092,
        -166.7043134,
        68.35320939,
        9.222562309
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:01Z",
        "pc:count": 2670657,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525273.8689,
            "count": 2670657,
            "maximum": -524971.8394,
            "minimum": -525502.4194,
            "name": "X",
            "position": 0,
            "stddev": 129.2151734,
            "variance": 16696.56103
          },
          {
            "average": 2093525.347,
            "count": 2670657,
            "maximum": 2093857.157,
            "minimum": 2093329.137,
            "name": "Y",
            "position": 1,
            "stddev": 118.1027472,
            "variance": 13948.25889
          },
          {
            "average": 3.389663217,
            "count": 2670657,
            "maximum": 9.222562309,
            "minimum": 0.9825623092,
            "name": "Z",
            "position": 2,
            "stddev": 1.390693918,
            "variance": 1.934029573
          },
          {
            "average": 37448.02106,
            "count": 2670657,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 15307.32334,
            "variance": 234314147.8
          },
          {
            "average": 1.001319525,
            "count": 2670657,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03657874509,
            "variance": 0.001338004592
          },
          {
            "average": 1.002651033,
            "count": 2670657,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05200639699,
            "variance": 0.002704665328
          },
          {
            "average": 0.5179553196,
            "count": 2670657,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499677596,
            "variance": 0.2496777
          },
          {
            "average": 0.000794186599,
            "count": 2670657,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02817012893,
            "variance": 0.0007935561638
          },
          {
            "average": 2.659104857,
            "count": 2670657,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.952746631,
            "variance": 8.718712664
          },
          {
            "average": -2.319448311,
            "count": 2670657,
            "maximum": 16.51199913,
            "minimum": -20.97599983,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.63792942,
            "variance": 113.1655424
          },
          {
            "average": 0.5406695806,
            "count": 2670657,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4983433337,
            "variance": 0.2483460782
          },
          {
            "average": 225.7586455,
            "count": 2670657,
            "maximum": 305,
            "minimum": 201,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 42.59157368,
            "variance": 1814.042148
          },
          {
            "average": 249107381.8,
            "count": 2670657,
            "maximum": 249159561.7,
            "minimum": 249091814.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28137.11044,
            "variance": 791696983.7
          },
          {
            "average": 0.5406695806,
            "count": 2670657,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4983433337,
            "variance": 0.2483460782
          },
          {
            "average": 0,
            "count": 2670657,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2670657,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 2670657,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1942997547,
            "count": 2670657,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3956607368,
            "variance": 0.1565474186
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525502.4194,
          2093329.137,
          0.9825623092,
          -524971.8394,
          2093857.157,
          9.222562309
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525502.4193573892,
                2093329.1366166514,
                0.982562309197118
              ],
              [
                -525502.4193573892,
                2093857.1566166515,
                0.982562309197118
              ],
              [
                -524971.8393573891,
                2093857.1566166515,
                9.22256230919712
              ],
              [
                -524971.8393573891,
                2093329.1366166514,
                9.22256230919712
              ],
              [
                -525502.4193573892,
                2093329.1366166514,
                0.982562309197118
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:01+00:00",
        "end_time": "2019-08-06T01:56:54+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0694.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0694.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0694.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0694.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7192595,
            68.34760523,
            0.9825623092,
            -166.7043134,
            68.35320939,
            9.222562309
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7168420471975,
                  68.34760523169444,
                  0.982562309197118
                ],
                [
                  -166.71925951526487,
                  68.35229589937202,
                  0.982562309197118
                ],
                [
                  -166.70672864721348,
                  68.35320939062578,
                  9.22256230919712
                ],
                [
                  -166.70431344337476,
                  68.34851853524484,
                  9.22256230919712
                ],
                [
                  -166.7168420471975,
                  68.34760523169444,
                  0.982562309197118
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0694.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0694.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:01Z",
            "pc:count": 2670657,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525273.8689,
                "count": 2670657,
                "maximum": -524971.8394,
                "minimum": -525502.4194,
                "name": "X",
                "position": 0,
                "stddev": 129.2151734,
                "variance": 16696.56103
              },
              {
                "average": 2093525.347,
                "count": 2670657,
                "maximum": 2093857.157,
                "minimum": 2093329.137,
                "name": "Y",
                "position": 1,
                "stddev": 118.1027472,
                "variance": 13948.25889
              },
              {
                "average": 3.389663217,
                "count": 2670657,
                "maximum": 9.222562309,
                "minimum": 0.9825623092,
                "name": "Z",
                "position": 2,
                "stddev": 1.390693918,
                "variance": 1.934029573
              },
              {
                "average": 37448.02106,
                "count": 2670657,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 15307.32334,
                "variance": 234314147.8
              },
              {
                "average": 1.001319525,
                "count": 2670657,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03657874509,
                "variance": 0.001338004592
              },
              {
                "average": 1.002651033,
                "count": 2670657,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05200639699,
                "variance": 0.002704665328
              },
              {
                "average": 0.5179553196,
                "count": 2670657,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499677596,
                "variance": 0.2496777
              },
              {
                "average": 0.000794186599,
                "count": 2670657,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02817012893,
                "variance": 0.0007935561638
              },
              {
                "average": 2.659104857,
                "count": 2670657,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.952746631,
                "variance": 8.718712664
              },
              {
                "average": -2.319448311,
                "count": 2670657,
                "maximum": 16.51199913,
                "minimum": -20.97599983,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.63792942,
                "variance": 113.1655424
              },
              {
                "average": 0.5406695806,
                "count": 2670657,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4983433337,
                "variance": 0.2483460782
              },
              {
                "average": 225.7586455,
                "count": 2670657,
                "maximum": 305,
                "minimum": 201,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 42.59157368,
                "variance": 1814.042148
              },
              {
                "average": 249107381.8,
                "count": 2670657,
                "maximum": 249159561.7,
                "minimum": 249091814.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28137.11044,
                "variance": 791696983.7
              },
              {
                "average": 0.5406695806,
                "count": 2670657,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4983433337,
                "variance": 0.2483460782
              },
              {
                "average": 0,
                "count": 2670657,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2670657,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 2670657,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1942997547,
                "count": 2670657,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3956607368,
                "variance": 0.1565474186
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525502.4194,
              2093329.137,
              0.9825623092,
              -524971.8394,
              2093857.157,
              9.222562309
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525502.4193573892,
                    2093329.1366166514,
                    0.982562309197118
                  ],
                  [
                    -525502.4193573892,
                    2093857.1566166515,
                    0.982562309197118
                  ],
                  [
                    -524971.8393573891,
                    2093857.1566166515,
                    9.22256230919712
                  ],
                  [
                    -524971.8393573891,
                    2093329.1366166514,
                    9.22256230919712
                  ],
                  [
                    -525502.4193573892,
                    2093329.1366166514,
                    0.982562309197118
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:01+00:00",
            "end_time": "2019-08-06T01:56:54+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0624.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.79439070590246,
              68.34315440470915,
              2.221737203360146
            ],
            [
              -166.79682312940318,
              68.34784552688342,
              2.221737203360146
            ],
            [
              -166.7842000689817,
              68.3487716398145,
              16.001737203360147
            ],
            [
              -166.78176992510646,
              68.34408032736819,
              16.001737203360147
            ],
            [
              -166.79439070590246,
              68.34315440470915,
              2.221737203360146
            ]
          ]
        ]
      },
      "bbox": [
        -166.7968231,
        68.3431544,
        2.221737203,
        -166.7817699,
        68.34877164,
        16.0017372
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:50Z",
        "pc:count": 3800649,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528488.2843,
            "count": 3800649,
            "maximum": -528226.8426,
            "minimum": -528761.5426,
            "name": "X",
            "position": 0,
            "stddev": 135.336974,
            "variance": 18316.09653
          },
          {
            "average": 2093735.894,
            "count": 3800649,
            "maximum": 2093990.047,
            "minimum": 2093461.847,
            "name": "Y",
            "position": 1,
            "stddev": 125.9193407,
            "variance": 15855.68036
          },
          {
            "average": 4.58237571,
            "count": 3800649,
            "maximum": 16.0017372,
            "minimum": 2.221737203,
            "name": "Z",
            "position": 2,
            "stddev": 1.003358426,
            "variance": 1.006728131
          },
          {
            "average": 29850.44558,
            "count": 3800649,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 9037.934518,
            "variance": 81684260.35
          },
          {
            "average": 1.001376081,
            "count": 3800649,
            "maximum": 3,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.03721878934,
            "variance": 0.00138523828
          },
          {
            "average": 1.002751109,
            "count": 3800649,
            "maximum": 3,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.05269433982,
            "variance": 0.002776693449
          },
          {
            "average": 0.5047264296,
            "count": 3800649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999777261,
            "variance": 0.2499777266
          },
          {
            "average": 0.0004846540683,
            "count": 3800649,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02200952762,
            "variance": 0.0004844193062
          },
          {
            "average": 1.250134911,
            "count": 3800649,
            "maximum": 7,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 0.4538897661,
            "variance": 0.2060159197
          },
          {
            "average": -2.991362225,
            "count": 3800649,
            "maximum": 16.2840004,
            "minimum": -20.99399948,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 11.00373804,
            "variance": 121.0822509
          },
          {
            "average": 0.4806102852,
            "count": 3800649,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4996239632,
            "variance": 0.2496241046
          },
          {
            "average": 231.2982909,
            "count": 3800649,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 46.35684241,
            "variance": 2148.956838
          },
          {
            "average": 249111295.1,
            "count": 3800649,
            "maximum": 249159610.5,
            "minimum": 249091605.2,
            "name": "GpsTime",
            "position": 12,
            "stddev": 30452.50176,
            "variance": 927354863.7
          },
          {
            "average": 0.4806102852,
            "count": 3800649,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4996239632,
            "variance": 0.2496241046
          },
          {
            "average": 0,
            "count": 3800649,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3800649,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 3800649,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2398232512,
            "count": 3800649,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4269755349,
            "variance": 0.1823081074
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528761.5426,
          2093461.847,
          2.221737203,
          -528226.8426,
          2093990.047,
          16.0017372
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528761.5425749876,
                2093461.8465017213,
                2.221737203360146
              ],
              [
                -528761.5425749876,
                2093990.0465017215,
                2.221737203360146
              ],
              [
                -528226.8425749877,
                2093990.0465017215,
                16.001737203360147
              ],
              [
                -528226.8425749877,
                2093461.8465017213,
                16.001737203360147
              ],
              [
                -528761.5425749876,
                2093461.8465017213,
                2.221737203360146
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:50+00:00",
        "end_time": "2019-08-06T01:53:25+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0624.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0624.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0624.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0624.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7968231,
            68.3431544,
            2.221737203,
            -166.7817699,
            68.34877164,
            16.0017372
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.79439070590246,
                  68.34315440470915,
                  2.221737203360146
                ],
                [
                  -166.79682312940318,
                  68.34784552688342,
                  2.221737203360146
                ],
                [
                  -166.7842000689817,
                  68.3487716398145,
                  16.001737203360147
                ],
                [
                  -166.78176992510646,
                  68.34408032736819,
                  16.001737203360147
                ],
                [
                  -166.79439070590246,
                  68.34315440470915,
                  2.221737203360146
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0624.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0624.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:50Z",
            "pc:count": 3800649,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528488.2843,
                "count": 3800649,
                "maximum": -528226.8426,
                "minimum": -528761.5426,
                "name": "X",
                "position": 0,
                "stddev": 135.336974,
                "variance": 18316.09653
              },
              {
                "average": 2093735.894,
                "count": 3800649,
                "maximum": 2093990.047,
                "minimum": 2093461.847,
                "name": "Y",
                "position": 1,
                "stddev": 125.9193407,
                "variance": 15855.68036
              },
              {
                "average": 4.58237571,
                "count": 3800649,
                "maximum": 16.0017372,
                "minimum": 2.221737203,
                "name": "Z",
                "position": 2,
                "stddev": 1.003358426,
                "variance": 1.006728131
              },
              {
                "average": 29850.44558,
                "count": 3800649,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 9037.934518,
                "variance": 81684260.35
              },
              {
                "average": 1.001376081,
                "count": 3800649,
                "maximum": 3,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.03721878934,
                "variance": 0.00138523828
              },
              {
                "average": 1.002751109,
                "count": 3800649,
                "maximum": 3,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.05269433982,
                "variance": 0.002776693449
              },
              {
                "average": 0.5047264296,
                "count": 3800649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999777261,
                "variance": 0.2499777266
              },
              {
                "average": 0.0004846540683,
                "count": 3800649,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02200952762,
                "variance": 0.0004844193062
              },
              {
                "average": 1.250134911,
                "count": 3800649,
                "maximum": 7,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 0.4538897661,
                "variance": 0.2060159197
              },
              {
                "average": -2.991362225,
                "count": 3800649,
                "maximum": 16.2840004,
                "minimum": -20.99399948,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 11.00373804,
                "variance": 121.0822509
              },
              {
                "average": 0.4806102852,
                "count": 3800649,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4996239632,
                "variance": 0.2496241046
              },
              {
                "average": 231.2982909,
                "count": 3800649,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 46.35684241,
                "variance": 2148.956838
              },
              {
                "average": 249111295.1,
                "count": 3800649,
                "maximum": 249159610.5,
                "minimum": 249091605.2,
                "name": "GpsTime",
                "position": 12,
                "stddev": 30452.50176,
                "variance": 927354863.7
              },
              {
                "average": 0.4806102852,
                "count": 3800649,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4996239632,
                "variance": 0.2496241046
              },
              {
                "average": 0,
                "count": 3800649,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3800649,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 3800649,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2398232512,
                "count": 3800649,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4269755349,
                "variance": 0.1823081074
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528761.5426,
              2093461.847,
              2.221737203,
              -528226.8426,
              2093990.047,
              16.0017372
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528761.5425749876,
                    2093461.8465017213,
                    2.221737203360146
                  ],
                  [
                    -528761.5425749876,
                    2093990.0465017215,
                    2.221737203360146
                  ],
                  [
                    -528226.8425749877,
                    2093990.0465017215,
                    16.001737203360147
                  ],
                  [
                    -528226.8425749877,
                    2093461.8465017213,
                    16.001737203360147
                  ],
                  [
                    -528761.5425749876,
                    2093461.8465017213,
                    2.221737203360146
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:50+00:00",
            "end_time": "2019-08-06T01:53:25+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0558.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7833857295902,
              68.34289951063215,
              0.84735994429792
            ],
            [
              -166.7839149692425,
              68.34392124743887,
              0.84735994429792
            ],
            [
              -166.77295808644294,
              68.34472445637284,
              3.96735994429792
            ],
            [
              -166.77242927778784,
              68.34370268362532,
              3.96735994429792
            ],
            [
              -166.7833857295902,
              68.34289951063215,
              0.84735994429792
            ]
          ]
        ]
      },
      "bbox": [
        -166.783915,
        68.34289951,
        0.8473599443,
        -166.7724293,
        68.34472446,
        3.967359944
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:44Z",
        "pc:count": 287256,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528119.6631,
            "count": 287256,
            "maximum": -527853.5757,
            "minimum": -528317.7557,
            "name": "X",
            "position": 0,
            "stddev": 121.9769998,
            "variance": 14878.38847
          },
          {
            "average": 2093406.834,
            "count": 287256,
            "maximum": 2093461.654,
            "minimum": 2093346.614,
            "name": "Y",
            "position": 1,
            "stddev": 22.84136978,
            "variance": 521.7281733
          },
          {
            "average": 2.15934361,
            "count": 287256,
            "maximum": 3.967359944,
            "minimum": 0.8473599443,
            "name": "Z",
            "position": 2,
            "stddev": 0.9480934688,
            "variance": 0.8988812256
          },
          {
            "average": 20481.85144,
            "count": 287256,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 10055.2471,
            "variance": 101107994.1
          },
          {
            "average": 1,
            "count": 287256,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 287256,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4903535522,
            "count": 287256,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999078075,
            "variance": 0.249907816
          },
          {
            "average": 0.0006509872727,
            "count": 287256,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02550619048,
            "variance": 0.000650565753
          },
          {
            "average": 3.067539059,
            "count": 287256,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.40019191,
            "variance": 11.56130502
          },
          {
            "average": -0.3619032095,
            "count": 287256,
            "maximum": 11.48999977,
            "minimum": -15.78600025,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.349473079,
            "variance": 69.7137007
          },
          {
            "average": 0.5108753168,
            "count": 287256,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4998825836,
            "variance": 0.2498825974
          },
          {
            "average": 225.279935,
            "count": 287256,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 44.03712123,
            "variance": 1939.268046
          },
          {
            "average": 249107627.7,
            "count": 287256,
            "maximum": 249159604.2,
            "minimum": 249091597.8,
            "name": "GpsTime",
            "position": 12,
            "stddev": 28707.09729,
            "variance": 824097434.9
          },
          {
            "average": 0.5108753168,
            "count": 287256,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4998825836,
            "variance": 0.2498825974
          },
          {
            "average": 0,
            "count": 287256,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 287256,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 287256,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2290430835,
            "count": 287256,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.420217758,
            "variance": 0.1765829641
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528317.7557,
          2093346.614,
          0.8473599443,
          -527853.5757,
          2093461.654,
          3.967359944
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528317.7556538141,
                2093346.6137267393,
                0.84735994429792
              ],
              [
                -528317.7556538141,
                2093461.6537267393,
                0.84735994429792
              ],
              [
                -527853.5756538141,
                2093461.6537267393,
                3.96735994429792
              ],
              [
                -527853.5756538141,
                2093346.6137267393,
                3.96735994429792
              ],
              [
                -528317.7556538141,
                2093346.6137267393,
                0.84735994429792
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:44+00:00",
        "end_time": "2019-08-06T01:53:17+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0558.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0558.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0558.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0558.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.783915,
            68.34289951,
            0.8473599443,
            -166.7724293,
            68.34472446,
            3.967359944
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7833857295902,
                  68.34289951063215,
                  0.84735994429792
                ],
                [
                  -166.7839149692425,
                  68.34392124743887,
                  0.84735994429792
                ],
                [
                  -166.77295808644294,
                  68.34472445637284,
                  3.96735994429792
                ],
                [
                  -166.77242927778784,
                  68.34370268362532,
                  3.96735994429792
                ],
                [
                  -166.7833857295902,
                  68.34289951063215,
                  0.84735994429792
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0558.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0558.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:44Z",
            "pc:count": 287256,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528119.6631,
                "count": 287256,
                "maximum": -527853.5757,
                "minimum": -528317.7557,
                "name": "X",
                "position": 0,
                "stddev": 121.9769998,
                "variance": 14878.38847
              },
              {
                "average": 2093406.834,
                "count": 287256,
                "maximum": 2093461.654,
                "minimum": 2093346.614,
                "name": "Y",
                "position": 1,
                "stddev": 22.84136978,
                "variance": 521.7281733
              },
              {
                "average": 2.15934361,
                "count": 287256,
                "maximum": 3.967359944,
                "minimum": 0.8473599443,
                "name": "Z",
                "position": 2,
                "stddev": 0.9480934688,
                "variance": 0.8988812256
              },
              {
                "average": 20481.85144,
                "count": 287256,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 10055.2471,
                "variance": 101107994.1
              },
              {
                "average": 1,
                "count": 287256,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 287256,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4903535522,
                "count": 287256,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999078075,
                "variance": 0.249907816
              },
              {
                "average": 0.0006509872727,
                "count": 287256,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02550619048,
                "variance": 0.000650565753
              },
              {
                "average": 3.067539059,
                "count": 287256,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.40019191,
                "variance": 11.56130502
              },
              {
                "average": -0.3619032095,
                "count": 287256,
                "maximum": 11.48999977,
                "minimum": -15.78600025,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.349473079,
                "variance": 69.7137007
              },
              {
                "average": 0.5108753168,
                "count": 287256,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4998825836,
                "variance": 0.2498825974
              },
              {
                "average": 225.279935,
                "count": 287256,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 44.03712123,
                "variance": 1939.268046
              },
              {
                "average": 249107627.7,
                "count": 287256,
                "maximum": 249159604.2,
                "minimum": 249091597.8,
                "name": "GpsTime",
                "position": 12,
                "stddev": 28707.09729,
                "variance": 824097434.9
              },
              {
                "average": 0.5108753168,
                "count": 287256,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4998825836,
                "variance": 0.2498825974
              },
              {
                "average": 0,
                "count": 287256,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 287256,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 287256,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2290430835,
                "count": 287256,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.420217758,
                "variance": 0.1765829641
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528317.7557,
              2093346.614,
              0.8473599443,
              -527853.5757,
              2093461.654,
              3.967359944
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528317.7556538141,
                    2093346.6137267393,
                    0.84735994429792
                  ],
                  [
                    -528317.7556538141,
                    2093461.6537267393,
                    0.84735994429792
                  ],
                  [
                    -527853.5756538141,
                    2093461.6537267393,
                    3.96735994429792
                  ],
                  [
                    -527853.5756538141,
                    2093346.6137267393,
                    3.96735994429792
                  ],
                  [
                    -528317.7556538141,
                    2093346.6137267393,
                    0.84735994429792
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:44+00:00",
            "end_time": "2019-08-06T01:53:17+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0559.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.77219843444593,
              68.34298438126756,
              0.836166299576424
            ],
            [
              -166.772713704145,
              68.34398003919877,
              0.836166299576424
            ],
            [
              -166.76186502524166,
              68.34477460337918,
              2.956166299576424
            ],
            [
              -166.76135017142178,
              68.34377891080135,
              2.956166299576424
            ],
            [
              -166.77219843444593,
              68.34298438126756,
              0.836166299576424
            ]
          ]
        ]
      },
      "bbox": [
        -166.7727137,
        68.34298438,
        0.8361662996,
        -166.7613502,
        68.3447746,
        2.9561663
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:36Z",
        "pc:count": 136758,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527625.0639,
            "count": 136758,
            "maximum": -527399.7462,
            "minimum": -527859.3262,
            "name": "X",
            "position": 0,
            "stddev": 126.9910817,
            "variance": 16126.73484
          },
          {
            "average": 2093326.445,
            "count": 136758,
            "maximum": 2093378.961,
            "minimum": 2093266.861,
            "name": "Y",
            "position": 1,
            "stddev": 23.32665529,
            "variance": 544.1328469
          },
          {
            "average": 1.536449793,
            "count": 136758,
            "maximum": 2.9561663,
            "minimum": 0.8361662996,
            "name": "Z",
            "position": 2,
            "stddev": 0.5187929098,
            "variance": 0.2691460833
          },
          {
            "average": 18823.16711,
            "count": 136758,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 7410.561645,
            "variance": 54916423.89
          },
          {
            "average": 1,
            "count": 136758,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 136758,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4901870457,
            "count": 136758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999055244,
            "variance": 0.2499055333
          },
          {
            "average": 0.001330817941,
            "count": 136758,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03645622832,
            "variance": 0.001329056583
          },
          {
            "average": 4.594890244,
            "count": 136758,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.930312497,
            "variance": 15.44735633
          },
          {
            "average": -1.179114903,
            "count": 136758,
            "maximum": 11.71199989,
            "minimum": -15.8760004,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.356763458,
            "variance": 69.83549548
          },
          {
            "average": 0.5650638354,
            "count": 136758,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4957504356,
            "variance": 0.2457684944
          },
          {
            "average": 213.5496278,
            "count": 136758,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 34.04550509,
            "variance": 1159.096417
          },
          {
            "average": 249100011.7,
            "count": 136758,
            "maximum": 249159596.8,
            "minimum": 249091590.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 22178.0345,
            "variance": 491865214.3
          },
          {
            "average": 0.5650638354,
            "count": 136758,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4957504356,
            "variance": 0.2457684944
          },
          {
            "average": 0,
            "count": 136758,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 136758,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 136758,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2441246582,
            "count": 136758,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4295685728,
            "variance": 0.1845291587
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527859.3262,
          2093266.861,
          0.8361662996,
          -527399.7462,
          2093378.961,
          2.9561663
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527859.3261714529,
                2093266.8606603586,
                0.836166299576424
              ],
              [
                -527859.3261714529,
                2093378.9606603587,
                0.836166299576424
              ],
              [
                -527399.7461714528,
                2093378.9606603587,
                2.956166299576424
              ],
              [
                -527399.7461714528,
                2093266.8606603586,
                2.956166299576424
              ],
              [
                -527859.3261714529,
                2093266.8606603586,
                0.836166299576424
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:36+00:00",
        "end_time": "2019-08-06T01:53:10+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0559.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0559.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0559.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0559.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7727137,
            68.34298438,
            0.8361662996,
            -166.7613502,
            68.3447746,
            2.9561663
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.77219843444593,
                  68.34298438126756,
                  0.836166299576424
                ],
                [
                  -166.772713704145,
                  68.34398003919877,
                  0.836166299576424
                ],
                [
                  -166.76186502524166,
                  68.34477460337918,
                  2.956166299576424
                ],
                [
                  -166.76135017142178,
                  68.34377891080135,
                  2.956166299576424
                ],
                [
                  -166.77219843444593,
                  68.34298438126756,
                  0.836166299576424
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0559.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0559.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:36Z",
            "pc:count": 136758,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527625.0639,
                "count": 136758,
                "maximum": -527399.7462,
                "minimum": -527859.3262,
                "name": "X",
                "position": 0,
                "stddev": 126.9910817,
                "variance": 16126.73484
              },
              {
                "average": 2093326.445,
                "count": 136758,
                "maximum": 2093378.961,
                "minimum": 2093266.861,
                "name": "Y",
                "position": 1,
                "stddev": 23.32665529,
                "variance": 544.1328469
              },
              {
                "average": 1.536449793,
                "count": 136758,
                "maximum": 2.9561663,
                "minimum": 0.8361662996,
                "name": "Z",
                "position": 2,
                "stddev": 0.5187929098,
                "variance": 0.2691460833
              },
              {
                "average": 18823.16711,
                "count": 136758,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 7410.561645,
                "variance": 54916423.89
              },
              {
                "average": 1,
                "count": 136758,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 136758,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4901870457,
                "count": 136758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999055244,
                "variance": 0.2499055333
              },
              {
                "average": 0.001330817941,
                "count": 136758,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03645622832,
                "variance": 0.001329056583
              },
              {
                "average": 4.594890244,
                "count": 136758,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.930312497,
                "variance": 15.44735633
              },
              {
                "average": -1.179114903,
                "count": 136758,
                "maximum": 11.71199989,
                "minimum": -15.8760004,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.356763458,
                "variance": 69.83549548
              },
              {
                "average": 0.5650638354,
                "count": 136758,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4957504356,
                "variance": 0.2457684944
              },
              {
                "average": 213.5496278,
                "count": 136758,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 34.04550509,
                "variance": 1159.096417
              },
              {
                "average": 249100011.7,
                "count": 136758,
                "maximum": 249159596.8,
                "minimum": 249091590.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 22178.0345,
                "variance": 491865214.3
              },
              {
                "average": 0.5650638354,
                "count": 136758,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4957504356,
                "variance": 0.2457684944
              },
              {
                "average": 0,
                "count": 136758,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 136758,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 136758,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2441246582,
                "count": 136758,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4295685728,
                "variance": 0.1845291587
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527859.3262,
              2093266.861,
              0.8361662996,
              -527399.7462,
              2093378.961,
              2.9561663
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527859.3261714529,
                    2093266.8606603586,
                    0.836166299576424
                  ],
                  [
                    -527859.3261714529,
                    2093378.9606603587,
                    0.836166299576424
                  ],
                  [
                    -527399.7461714528,
                    2093378.9606603587,
                    2.956166299576424
                  ],
                  [
                    -527399.7461714528,
                    2093266.8606603586,
                    2.956166299576424
                  ],
                  [
                    -527859.3261714529,
                    2093266.8606603586,
                    0.836166299576424
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:36+00:00",
            "end_time": "2019-08-06T01:53:10+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0560.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.76106167537185,
              68.34297988111825,
              0.848490504339992
            ],
            [
              -166.76160534371755,
              68.34403135157949,
              0.848490504339992
            ],
            [
              -166.75076289963008,
              68.3448247496346,
              138.24849050434
            ],
            [
              -166.75021967025432,
              68.3437732426383,
              138.24849050434
            ],
            [
              -166.76106167537185,
              68.34297988111825,
              0.848490504339992
            ]
          ]
        ]
      },
      "bbox": [
        -166.7616053,
        68.34297988,
        0.8484905043,
        -166.7502197,
        68.34482475,
        138.2484905
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:30Z",
        "pc:count": 122007,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -527152.4353,
            "count": 122007,
            "maximum": -526945.5338,
            "minimum": -527404.8338,
            "name": "X",
            "position": 0,
            "stddev": 132.3981903,
            "variance": 17529.28078
          },
          {
            "average": 2093238.438,
            "count": 122007,
            "maximum": 2093296.272,
            "minimum": 2093177.892,
            "name": "Y",
            "position": 1,
            "stddev": 26.80179671,
            "variance": 718.3363068
          },
          {
            "average": 1.593487103,
            "count": 122007,
            "maximum": 138.2484905,
            "minimum": 0.8484905043,
            "name": "Z",
            "position": 2,
            "stddev": 0.7131578758,
            "variance": 0.5085941558
          },
          {
            "average": 17568.65943,
            "count": 122007,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 8052.057239,
            "variance": 64835625.78
          },
          {
            "average": 1,
            "count": 122007,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 122007,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4939306761,
            "count": 122007,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999652109,
            "variance": 0.2499652121
          },
          {
            "average": 0.002630996582,
            "count": 122007,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.05122593042,
            "variance": 0.002624095947
          },
          {
            "average": 5.296351849,
            "count": 122007,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 4.072388331,
            "variance": 16.58434672
          },
          {
            "average": -1.718238069,
            "count": 122007,
            "maximum": 12.25800037,
            "minimum": -15.28199959,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.150162511,
            "variance": 66.42514896
          },
          {
            "average": 0.5440343587,
            "count": 122007,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4980592419,
            "variance": 0.2480630084
          },
          {
            "average": 213.0616768,
            "count": 122007,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 33.54146256,
            "variance": 1125.029711
          },
          {
            "average": 249099713.9,
            "count": 122007,
            "maximum": 249159590.1,
            "minimum": 249091583.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 21839.54599,
            "variance": 476965769.2
          },
          {
            "average": 0.5440343587,
            "count": 122007,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4980592419,
            "variance": 0.2480630084
          },
          {
            "average": 0,
            "count": 122007,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 122007,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 122007,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.1487947413,
            "count": 122007,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.3558874883,
            "variance": 0.1266559044
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -527404.8338,
          2093177.892,
          0.8484905043,
          -526945.5338,
          2093296.272,
          138.2484905
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -527404.8338205627,
                2093177.89157284,
                0.848490504339992
              ],
              [
                -527404.8338205627,
                2093296.27157284,
                0.848490504339992
              ],
              [
                -526945.5338205626,
                2093296.27157284,
                138.24849050434
              ],
              [
                -526945.5338205626,
                2093177.89157284,
                138.24849050434
              ],
              [
                -527404.8338205627,
                2093177.89157284,
                0.848490504339992
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:30+00:00",
        "end_time": "2019-08-06T01:53:03+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0560.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0560.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0560.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0560.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7616053,
            68.34297988,
            0.8484905043,
            -166.7502197,
            68.34482475,
            138.2484905
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.76106167537185,
                  68.34297988111825,
                  0.848490504339992
                ],
                [
                  -166.76160534371755,
                  68.34403135157949,
                  0.848490504339992
                ],
                [
                  -166.75076289963008,
                  68.3448247496346,
                  138.24849050434
                ],
                [
                  -166.75021967025432,
                  68.3437732426383,
                  138.24849050434
                ],
                [
                  -166.76106167537185,
                  68.34297988111825,
                  0.848490504339992
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0560.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0560.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:30Z",
            "pc:count": 122007,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -527152.4353,
                "count": 122007,
                "maximum": -526945.5338,
                "minimum": -527404.8338,
                "name": "X",
                "position": 0,
                "stddev": 132.3981903,
                "variance": 17529.28078
              },
              {
                "average": 2093238.438,
                "count": 122007,
                "maximum": 2093296.272,
                "minimum": 2093177.892,
                "name": "Y",
                "position": 1,
                "stddev": 26.80179671,
                "variance": 718.3363068
              },
              {
                "average": 1.593487103,
                "count": 122007,
                "maximum": 138.2484905,
                "minimum": 0.8484905043,
                "name": "Z",
                "position": 2,
                "stddev": 0.7131578758,
                "variance": 0.5085941558
              },
              {
                "average": 17568.65943,
                "count": 122007,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 8052.057239,
                "variance": 64835625.78
              },
              {
                "average": 1,
                "count": 122007,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 122007,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4939306761,
                "count": 122007,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999652109,
                "variance": 0.2499652121
              },
              {
                "average": 0.002630996582,
                "count": 122007,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.05122593042,
                "variance": 0.002624095947
              },
              {
                "average": 5.296351849,
                "count": 122007,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 4.072388331,
                "variance": 16.58434672
              },
              {
                "average": -1.718238069,
                "count": 122007,
                "maximum": 12.25800037,
                "minimum": -15.28199959,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.150162511,
                "variance": 66.42514896
              },
              {
                "average": 0.5440343587,
                "count": 122007,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4980592419,
                "variance": 0.2480630084
              },
              {
                "average": 213.0616768,
                "count": 122007,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 33.54146256,
                "variance": 1125.029711
              },
              {
                "average": 249099713.9,
                "count": 122007,
                "maximum": 249159590.1,
                "minimum": 249091583.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 21839.54599,
                "variance": 476965769.2
              },
              {
                "average": 0.5440343587,
                "count": 122007,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4980592419,
                "variance": 0.2480630084
              },
              {
                "average": 0,
                "count": 122007,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 122007,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 122007,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.1487947413,
                "count": 122007,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.3558874883,
                "variance": 0.1266559044
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -527404.8338,
              2093177.892,
              0.8484905043,
              -526945.5338,
              2093296.272,
              138.2484905
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -527404.8338205627,
                    2093177.89157284,
                    0.848490504339992
                  ],
                  [
                    -527404.8338205627,
                    2093296.27157284,
                    0.848490504339992
                  ],
                  [
                    -526945.5338205626,
                    2093296.27157284,
                    138.24849050434
                  ],
                  [
                    -526945.5338205626,
                    2093177.89157284,
                    138.24849050434
                  ],
                  [
                    -527404.8338205627,
                    2093177.89157284,
                    0.848490504339992
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:30+00:00",
            "end_time": "2019-08-06T01:53:03+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0561.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.74993534139463,
              68.342915565135,
              0.791997894634831
            ],
            [
              -166.75053709345843,
              68.34408040981538,
              0.791997894634831
            ],
            [
              -166.73966972461469,
              68.34487492227849,
              4.291997894634831
            ],
            [
              -166.7390684600035,
              68.34371003706693,
              4.291997894634831
            ],
            [
              -166.74993534139463,
              68.342915565135,
              0.791997894634831
            ]
          ]
        ]
      },
      "bbox": [
        -166.7505371,
        68.34291557,
        0.7919978946,
        -166.7390685,
        68.34487492,
        4.291997895
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:23Z",
        "pc:count": 255734,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526698.0872,
            "count": 255734,
            "maximum": -526491.6734,
            "minimum": -526952.0134,
            "name": "X",
            "position": 0,
            "stddev": 128.2996433,
            "variance": 16460.79848
          },
          {
            "average": 2093153.07,
            "count": 255734,
            "maximum": 2093213.732,
            "minimum": 2093082.592,
            "name": "Y",
            "position": 1,
            "stddev": 27.5711888,
            "variance": 760.1704516
          },
          {
            "average": 2.537893747,
            "count": 255734,
            "maximum": 4.291997895,
            "minimum": 0.7919978946,
            "name": "Z",
            "position": 2,
            "stddev": 0.9769673127,
            "variance": 0.9544651301
          },
          {
            "average": 19997.28367,
            "count": 255734,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 6052.247192,
            "variance": 36629696.07
          },
          {
            "average": 1,
            "count": 255734,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 255734,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4954483956,
            "count": 255734,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.49998026,
            "variance": 0.2499802604
          },
          {
            "average": 0.00167361399,
            "count": 255734,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.0408756595,
            "variance": 0.001670819539
          },
          {
            "average": 2.999382171,
            "count": 255734,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 3.431670165,
            "variance": 11.77636012
          },
          {
            "average": -0.4901036935,
            "count": 255734,
            "maximum": 13.27200031,
            "minimum": -14.92800045,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 8.887365894,
            "variance": 78.98527254
          },
          {
            "average": 0.5223161566,
            "count": 255734,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4995027175,
            "variance": 0.2495029648
          },
          {
            "average": 216.031392,
            "count": 255734,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 36.62972451,
            "variance": 1341.736718
          },
          {
            "average": 249101591.5,
            "count": 255734,
            "maximum": 249159583.1,
            "minimum": 249091575,
            "name": "GpsTime",
            "position": 12,
            "stddev": 23870.16788,
            "variance": 569784914.4
          },
          {
            "average": 0.5223161566,
            "count": 255734,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4995027175,
            "variance": 0.2495029648
          },
          {
            "average": 0,
            "count": 255734,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 255734,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 255734,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.007085487264,
            "count": 255734,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.08387675867,
            "variance": 0.007035310645
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526952.0134,
          2093082.592,
          0.7919978946,
          -526491.6734,
          2093213.732,
          4.291997895
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526952.0133586162,
                2093082.5924151447,
                0.791997894634831
              ],
              [
                -526952.0133586162,
                2093213.7324151448,
                0.791997894634831
              ],
              [
                -526491.6733586161,
                2093213.7324151448,
                4.291997894634831
              ],
              [
                -526491.6733586161,
                2093082.5924151447,
                4.291997894634831
              ],
              [
                -526952.0133586162,
                2093082.5924151447,
                0.791997894634831
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:23+00:00",
        "end_time": "2019-08-06T01:52:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0561.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0561.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0561.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0561.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7505371,
            68.34291557,
            0.7919978946,
            -166.7390685,
            68.34487492,
            4.291997895
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.74993534139463,
                  68.342915565135,
                  0.791997894634831
                ],
                [
                  -166.75053709345843,
                  68.34408040981538,
                  0.791997894634831
                ],
                [
                  -166.73966972461469,
                  68.34487492227849,
                  4.291997894634831
                ],
                [
                  -166.7390684600035,
                  68.34371003706693,
                  4.291997894634831
                ],
                [
                  -166.74993534139463,
                  68.342915565135,
                  0.791997894634831
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0561.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0561.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:23Z",
            "pc:count": 255734,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526698.0872,
                "count": 255734,
                "maximum": -526491.6734,
                "minimum": -526952.0134,
                "name": "X",
                "position": 0,
                "stddev": 128.2996433,
                "variance": 16460.79848
              },
              {
                "average": 2093153.07,
                "count": 255734,
                "maximum": 2093213.732,
                "minimum": 2093082.592,
                "name": "Y",
                "position": 1,
                "stddev": 27.5711888,
                "variance": 760.1704516
              },
              {
                "average": 2.537893747,
                "count": 255734,
                "maximum": 4.291997895,
                "minimum": 0.7919978946,
                "name": "Z",
                "position": 2,
                "stddev": 0.9769673127,
                "variance": 0.9544651301
              },
              {
                "average": 19997.28367,
                "count": 255734,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 6052.247192,
                "variance": 36629696.07
              },
              {
                "average": 1,
                "count": 255734,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 255734,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4954483956,
                "count": 255734,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.49998026,
                "variance": 0.2499802604
              },
              {
                "average": 0.00167361399,
                "count": 255734,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.0408756595,
                "variance": 0.001670819539
              },
              {
                "average": 2.999382171,
                "count": 255734,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 3.431670165,
                "variance": 11.77636012
              },
              {
                "average": -0.4901036935,
                "count": 255734,
                "maximum": 13.27200031,
                "minimum": -14.92800045,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 8.887365894,
                "variance": 78.98527254
              },
              {
                "average": 0.5223161566,
                "count": 255734,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4995027175,
                "variance": 0.2495029648
              },
              {
                "average": 216.031392,
                "count": 255734,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 36.62972451,
                "variance": 1341.736718
              },
              {
                "average": 249101591.5,
                "count": 255734,
                "maximum": 249159583.1,
                "minimum": 249091575,
                "name": "GpsTime",
                "position": 12,
                "stddev": 23870.16788,
                "variance": 569784914.4
              },
              {
                "average": 0.5223161566,
                "count": 255734,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4995027175,
                "variance": 0.2495029648
              },
              {
                "average": 0,
                "count": 255734,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 255734,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 255734,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.007085487264,
                "count": 255734,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.08387675867,
                "variance": 0.007035310645
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526952.0134,
              2093082.592,
              0.7919978946,
              -526491.6734,
              2093213.732,
              4.291997895
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526952.0133586162,
                    2093082.5924151447,
                    0.791997894634831
                  ],
                  [
                    -526952.0133586162,
                    2093213.7324151448,
                    0.791997894634831
                  ],
                  [
                    -526491.6733586161,
                    2093213.7324151448,
                    4.291997894634831
                  ],
                  [
                    -526491.6733586161,
                    2093082.5924151447,
                    4.291997894634831
                  ],
                  [
                    -526952.0133586162,
                    2093082.5924151447,
                    0.791997894634831
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:23+00:00",
            "end_time": "2019-08-06T01:52:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0747.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.72807068966523,
              68.3516556927037,
              0.987112689236245
            ],
            [
              -166.73014192012903,
              68.35567043016279,
              0.987112689236245
            ],
            [
              -166.71864197449116,
              68.3565094367345,
              2.647112689236245
            ],
            [
              -166.71657252266945,
              68.35249455169017,
              2.647112689236245
            ],
            [
              -166.72807068966523,
              68.3516556927037,
              0.987112689236245
            ]
          ]
        ]
      },
      "bbox": [
        -166.7301419,
        68.35165569,
        0.9871126892,
        -166.7165725,
        68.35650944,
        2.647112689
      ],
      "properties": {
        "datetime": "2019-08-06T20:29:55Z",
        "pc:count": 998808,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525638.9333,
            "count": 998808,
            "maximum": -525388.5873,
            "minimum": -525875.4673,
            "name": "X",
            "position": 0,
            "stddev": 125.3664647,
            "variance": 15716.75047
          },
          {
            "average": 2094068.057,
            "count": 998808,
            "maximum": 2094309.389,
            "minimum": 2093857.449,
            "name": "Y",
            "position": 1,
            "stddev": 109.9036742,
            "variance": 12078.8176
          },
          {
            "average": 1.249669897,
            "count": 998808,
            "maximum": 2.647112689,
            "minimum": 0.9871126892,
            "name": "Z",
            "position": 2,
            "stddev": 0.1431538587,
            "variance": 0.02049302726
          },
          {
            "average": 8644.353563,
            "count": 998808,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 7643.687354,
            "variance": 58425956.36
          },
          {
            "average": 1,
            "count": 998808,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 998808,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4988065774,
            "count": 998808,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.499998826,
            "variance": 0.249998826
          },
          {
            "average": 0.0008420036684,
            "count": 998808,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02900509508,
            "variance": 0.0008412955405
          },
          {
            "average": 8.002304747,
            "count": 998808,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.13460128,
            "variance": 4.556522626
          },
          {
            "average": 0.7220256746,
            "count": 998808,
            "maximum": 16.09199905,
            "minimum": -15.89999962,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 7.336709639,
            "variance": 53.82730833
          },
          {
            "average": 0.4919113583,
            "count": 998808,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999348199,
            "variance": 0.2499348241
          },
          {
            "average": 204.3743953,
            "count": 998808,
            "maximum": 303,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 6.777896025,
            "variance": 45.93987453
          },
          {
            "average": 249092611.7,
            "count": 998808,
            "maximum": 249158595.7,
            "minimum": 249092175.6,
            "name": "GpsTime",
            "position": 12,
            "stddev": 4512.309106,
            "variance": 20360933.47
          },
          {
            "average": 0.4919113583,
            "count": 998808,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999348199,
            "variance": 0.2499348241
          },
          {
            "average": 0,
            "count": 998808,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 998808,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 998808,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.04418266574,
            "count": 998808,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2055008517,
            "variance": 0.04223060007
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525875.4673,
          2093857.449,
          0.9871126892,
          -525388.5873,
          2094309.389,
          2.647112689
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525875.4672587535,
                2093857.448694625,
                0.987112689236245
              ],
              [
                -525875.4672587535,
                2094309.3886946249,
                0.987112689236245
              ],
              [
                -525388.5872587536,
                2094309.3886946249,
                2.647112689236245
              ],
              [
                -525388.5872587536,
                2093857.448694625,
                2.647112689236245
              ],
              [
                -525875.4672587535,
                2093857.448694625,
                0.987112689236245
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:29:55+00:00",
        "end_time": "2019-08-06T02:02:55+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0747.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0747.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0747.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0747.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7301419,
            68.35165569,
            0.9871126892,
            -166.7165725,
            68.35650944,
            2.647112689
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.72807068966523,
                  68.3516556927037,
                  0.987112689236245
                ],
                [
                  -166.73014192012903,
                  68.35567043016279,
                  0.987112689236245
                ],
                [
                  -166.71864197449116,
                  68.3565094367345,
                  2.647112689236245
                ],
                [
                  -166.71657252266945,
                  68.35249455169017,
                  2.647112689236245
                ],
                [
                  -166.72807068966523,
                  68.3516556927037,
                  0.987112689236245
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0747.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0747.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:29:55Z",
            "pc:count": 998808,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525638.9333,
                "count": 998808,
                "maximum": -525388.5873,
                "minimum": -525875.4673,
                "name": "X",
                "position": 0,
                "stddev": 125.3664647,
                "variance": 15716.75047
              },
              {
                "average": 2094068.057,
                "count": 998808,
                "maximum": 2094309.389,
                "minimum": 2093857.449,
                "name": "Y",
                "position": 1,
                "stddev": 109.9036742,
                "variance": 12078.8176
              },
              {
                "average": 1.249669897,
                "count": 998808,
                "maximum": 2.647112689,
                "minimum": 0.9871126892,
                "name": "Z",
                "position": 2,
                "stddev": 0.1431538587,
                "variance": 0.02049302726
              },
              {
                "average": 8644.353563,
                "count": 998808,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 7643.687354,
                "variance": 58425956.36
              },
              {
                "average": 1,
                "count": 998808,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 998808,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4988065774,
                "count": 998808,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.499998826,
                "variance": 0.249998826
              },
              {
                "average": 0.0008420036684,
                "count": 998808,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02900509508,
                "variance": 0.0008412955405
              },
              {
                "average": 8.002304747,
                "count": 998808,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.13460128,
                "variance": 4.556522626
              },
              {
                "average": 0.7220256746,
                "count": 998808,
                "maximum": 16.09199905,
                "minimum": -15.89999962,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 7.336709639,
                "variance": 53.82730833
              },
              {
                "average": 0.4919113583,
                "count": 998808,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999348199,
                "variance": 0.2499348241
              },
              {
                "average": 204.3743953,
                "count": 998808,
                "maximum": 303,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 6.777896025,
                "variance": 45.93987453
              },
              {
                "average": 249092611.7,
                "count": 998808,
                "maximum": 249158595.7,
                "minimum": 249092175.6,
                "name": "GpsTime",
                "position": 12,
                "stddev": 4512.309106,
                "variance": 20360933.47
              },
              {
                "average": 0.4919113583,
                "count": 998808,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999348199,
                "variance": 0.2499348241
              },
              {
                "average": 0,
                "count": 998808,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 998808,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 998808,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.04418266574,
                "count": 998808,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2055008517,
                "variance": 0.04223060007
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525875.4673,
              2093857.449,
              0.9871126892,
              -525388.5873,
              2094309.389,
              2.647112689
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525875.4672587535,
                    2093857.448694625,
                    0.987112689236245
                  ],
                  [
                    -525875.4672587535,
                    2094309.3886946249,
                    0.987112689236245
                  ],
                  [
                    -525388.5872587536,
                    2094309.3886946249,
                    2.647112689236245
                  ],
                  [
                    -525388.5872587536,
                    2093857.448694625,
                    2.647112689236245
                  ],
                  [
                    -525875.4672587535,
                    2093857.448694625,
                    0.987112689236245
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:29:55+00:00",
            "end_time": "2019-08-06T02:02:55+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0748.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7170100520142,
              68.35178071582929,
              0.999399387499535
            ],
            [
              -166.71818669875995,
              68.35406362731297,
              0.999399387499535
            ],
            [
              -166.7085724112406,
              68.3547644815178,
              27.639399387499537
            ],
            [
              -166.70739661010677,
              68.3524814999315,
              27.639399387499537
            ],
            [
              -166.7170100520142,
              68.35178071582929,
              0.999399387499535
            ]
          ]
        ]
      },
      "bbox": [
        -166.7181867,
        68.35178072,
        0.9993993875,
        -166.7073966,
        68.35476448,
        27.63939939
      ],
      "properties": {
        "datetime": "2019-08-06T02:08:53Z",
        "pc:count": 237168,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525280.0379,
            "count": 237168,
            "maximum": -525014.396,
            "minimum": -525421.456,
            "name": "X",
            "position": 0,
            "stddev": 88.58397179,
            "variance": 7847.120059
          },
          {
            "average": 2093899.528,
            "count": 237168,
            "maximum": 2094040.446,
            "minimum": 2093783.466,
            "name": "Y",
            "position": 1,
            "stddev": 53.31839342,
            "variance": 2842.851077
          },
          {
            "average": 1.238810016,
            "count": 237168,
            "maximum": 27.63939939,
            "minimum": 0.9993993875,
            "name": "Z",
            "position": 2,
            "stddev": 0.1007164672,
            "variance": 0.01014380676
          },
          {
            "average": 9942.559801,
            "count": 237168,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 8639.452145,
            "variance": 74640133.36
          },
          {
            "average": 1.000012649,
            "count": 237168,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.003556565002,
            "variance": 1.264915461e-05
          },
          {
            "average": 1.000025299,
            "count": 237168,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.00502971065,
            "variance": 2.529798922e-05
          },
          {
            "average": 0.4696712879,
            "count": 237168,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4990803737,
            "variance": 0.2490812195
          },
          {
            "average": 0.000581866019,
            "count": 237168,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02411493112,
            "variance": 0.0005815299029
          },
          {
            "average": 8.154641436,
            "count": 237168,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.76686691,
            "variance": 3.121818679
          },
          {
            "average": 5.022337659,
            "count": 237168,
            "maximum": 12.23400021,
            "minimum": -15.81000042,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 4.626370078,
            "variance": 21.4033001
          },
          {
            "average": 0.4853268569,
            "count": 237168,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4997857062,
            "variance": 0.2497857521
          },
          {
            "average": 203.4731119,
            "count": 237168,
            "maximum": 205,
            "minimum": 203,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.5741017291,
            "variance": 0.3295927954
          },
          {
            "average": 249092236.4,
            "count": 237168,
            "maximum": 249092533.5,
            "minimum": 249092184.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 74.58089453,
            "variance": 5562.309829
          },
          {
            "average": 0.4853268569,
            "count": 237168,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4997857062,
            "variance": 0.2497857521
          },
          {
            "average": 0,
            "count": 237168,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 237168,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 237168,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.03777491061,
            "count": 237168,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.1906518293,
            "variance": 0.03634812
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525421.456,
          2093783.466,
          0.9993993875,
          -525014.396,
          2094040.446,
          27.63939939
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525421.4560177301,
                2093783.4664199797,
                0.999399387499535
              ],
              [
                -525421.4560177301,
                2094040.4464199797,
                0.999399387499535
              ],
              [
                -525014.39601773,
                2094040.4464199797,
                27.639399387499537
              ],
              [
                -525014.39601773,
                2093783.4664199797,
                27.639399387499537
              ],
              [
                -525421.4560177301,
                2093783.4664199797,
                0.999399387499535
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T02:08:53+00:00",
        "end_time": "2019-08-06T02:03:04+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0748.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0748.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0748.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0748.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7181867,
            68.35178072,
            0.9993993875,
            -166.7073966,
            68.35476448,
            27.63939939
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7170100520142,
                  68.35178071582929,
                  0.999399387499535
                ],
                [
                  -166.71818669875995,
                  68.35406362731297,
                  0.999399387499535
                ],
                [
                  -166.7085724112406,
                  68.3547644815178,
                  27.639399387499537
                ],
                [
                  -166.70739661010677,
                  68.3524814999315,
                  27.639399387499537
                ],
                [
                  -166.7170100520142,
                  68.35178071582929,
                  0.999399387499535
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0748.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0748.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T02:08:53Z",
            "pc:count": 237168,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525280.0379,
                "count": 237168,
                "maximum": -525014.396,
                "minimum": -525421.456,
                "name": "X",
                "position": 0,
                "stddev": 88.58397179,
                "variance": 7847.120059
              },
              {
                "average": 2093899.528,
                "count": 237168,
                "maximum": 2094040.446,
                "minimum": 2093783.466,
                "name": "Y",
                "position": 1,
                "stddev": 53.31839342,
                "variance": 2842.851077
              },
              {
                "average": 1.238810016,
                "count": 237168,
                "maximum": 27.63939939,
                "minimum": 0.9993993875,
                "name": "Z",
                "position": 2,
                "stddev": 0.1007164672,
                "variance": 0.01014380676
              },
              {
                "average": 9942.559801,
                "count": 237168,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 8639.452145,
                "variance": 74640133.36
              },
              {
                "average": 1.000012649,
                "count": 237168,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.003556565002,
                "variance": 1.264915461e-05
              },
              {
                "average": 1.000025299,
                "count": 237168,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.00502971065,
                "variance": 2.529798922e-05
              },
              {
                "average": 0.4696712879,
                "count": 237168,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4990803737,
                "variance": 0.2490812195
              },
              {
                "average": 0.000581866019,
                "count": 237168,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02411493112,
                "variance": 0.0005815299029
              },
              {
                "average": 8.154641436,
                "count": 237168,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.76686691,
                "variance": 3.121818679
              },
              {
                "average": 5.022337659,
                "count": 237168,
                "maximum": 12.23400021,
                "minimum": -15.81000042,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 4.626370078,
                "variance": 21.4033001
              },
              {
                "average": 0.4853268569,
                "count": 237168,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4997857062,
                "variance": 0.2497857521
              },
              {
                "average": 203.4731119,
                "count": 237168,
                "maximum": 205,
                "minimum": 203,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.5741017291,
                "variance": 0.3295927954
              },
              {
                "average": 249092236.4,
                "count": 237168,
                "maximum": 249092533.5,
                "minimum": 249092184.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 74.58089453,
                "variance": 5562.309829
              },
              {
                "average": 0.4853268569,
                "count": 237168,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4997857062,
                "variance": 0.2497857521
              },
              {
                "average": 0,
                "count": 237168,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 237168,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 237168,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.03777491061,
                "count": 237168,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.1906518293,
                "variance": 0.03634812
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525421.456,
              2093783.466,
              0.9993993875,
              -525014.396,
              2094040.446,
              27.63939939
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525421.4560177301,
                    2093783.4664199797,
                    0.999399387499535
                  ],
                  [
                    -525421.4560177301,
                    2094040.4464199797,
                    0.999399387499535
                  ],
                  [
                    -525014.39601773,
                    2094040.4464199797,
                    27.639399387499537
                  ],
                  [
                    -525014.39601773,
                    2093783.4664199797,
                    27.639399387499537
                  ],
                  [
                    -525421.4560177301,
                    2093783.4664199797,
                    0.999399387499535
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T02:08:53+00:00",
            "end_time": "2019-08-06T02:03:04+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0789.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.80130022872885,
              68.35573971830323,
              0.824004929806793
            ],
            [
              -166.8017053751852,
              68.35652040568483,
              0.824004929806793
            ],
            [
              -166.79523953967123,
              68.35699494036966,
              1.804004929806793
            ],
            [
              -166.7948345876127,
              68.35621423675337,
              1.804004929806793
            ],
            [
              -166.80130022872885,
              68.35573971830323,
              0.824004929806793
            ]
          ]
        ]
      },
      "bbox": [
        -166.8017054,
        68.35573972,
        0.8240049298,
        -166.7948346,
        68.35699494,
        1.80400493
      ],
      "properties": {
        "datetime": "2019-08-06T02:07:54Z",
        "pc:count": 32631,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -528565.6219,
            "count": 32631,
            "maximum": -528503.3187,
            "minimum": -528777.1187,
            "name": "X",
            "position": 0,
            "stddev": 47.10998575,
            "variance": 2219.350757
          },
          {
            "average": 2094918.031,
            "count": 32631,
            "maximum": 2094969.826,
            "minimum": 2094881.926,
            "name": "Y",
            "position": 1,
            "stddev": 17.7967387,
            "variance": 316.7239084
          },
          {
            "average": 1.117886821,
            "count": 32631,
            "maximum": 1.80400493,
            "minimum": 0.8240049298,
            "name": "Z",
            "position": 2,
            "stddev": 0.07884707474,
            "variance": 0.006216861196
          },
          {
            "average": 12198.43924,
            "count": 32631,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 9259.83719,
            "variance": 85744584.79
          },
          {
            "average": 1,
            "count": 32631,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 32631,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.4950200729,
            "count": 32631,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999828609,
            "variance": 0.2499828612
          },
          {
            "average": 0.00128711961,
            "count": 32631,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03585390255,
            "variance": 0.001285502328
          },
          {
            "average": 7.744690632,
            "count": 32631,
            "maximum": 9,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.055974436,
            "variance": 4.227030881
          },
          {
            "average": -1.068793785,
            "count": 32631,
            "maximum": 4.602000237,
            "minimum": -15.68400002,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 5.858509678,
            "variance": 34.32213565
          },
          {
            "average": 0.5176059575,
            "count": 32631,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.499697591,
            "variance": 0.2496976824
          },
          {
            "average": 204.8315406,
            "count": 32631,
            "maximum": 205,
            "minimum": 204,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 0.3742795083,
            "variance": 0.1400851504
          },
          {
            "average": 249092450.6,
            "count": 32631,
            "maximum": 249092474.8,
            "minimum": 249092334.3,
            "name": "GpsTime",
            "position": 12,
            "stddev": 51.79893641,
            "variance": 2683.129813
          },
          {
            "average": 0.5176059575,
            "count": 32631,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.499697591,
            "variance": 0.2496976824
          },
          {
            "average": 0,
            "count": 32631,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 32631,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 32631,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.06218013545,
            "count": 32631,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.2414861349,
            "variance": 0.05831555333
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -528777.1187,
          2094881.926,
          0.8240049298,
          -528503.3187,
          2094969.826,
          1.80400493
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -528777.1187333312,
                2094881.9257136022,
                0.824004929806793
              ],
              [
                -528777.1187333312,
                2094969.8257136021,
                0.824004929806793
              ],
              [
                -528503.3187333312,
                2094969.8257136021,
                1.804004929806793
              ],
              [
                -528503.3187333312,
                2094881.9257136022,
                1.804004929806793
              ],
              [
                -528777.1187333312,
                2094881.9257136022,
                0.824004929806793
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T02:07:54+00:00",
        "end_time": "2019-08-06T02:05:34+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0789.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0789.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0789.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0789.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.8017054,
            68.35573972,
            0.8240049298,
            -166.7948346,
            68.35699494,
            1.80400493
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.80130022872885,
                  68.35573971830323,
                  0.824004929806793
                ],
                [
                  -166.8017053751852,
                  68.35652040568483,
                  0.824004929806793
                ],
                [
                  -166.79523953967123,
                  68.35699494036966,
                  1.804004929806793
                ],
                [
                  -166.7948345876127,
                  68.35621423675337,
                  1.804004929806793
                ],
                [
                  -166.80130022872885,
                  68.35573971830323,
                  0.824004929806793
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0789.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0789.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T02:07:54Z",
            "pc:count": 32631,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -528565.6219,
                "count": 32631,
                "maximum": -528503.3187,
                "minimum": -528777.1187,
                "name": "X",
                "position": 0,
                "stddev": 47.10998575,
                "variance": 2219.350757
              },
              {
                "average": 2094918.031,
                "count": 32631,
                "maximum": 2094969.826,
                "minimum": 2094881.926,
                "name": "Y",
                "position": 1,
                "stddev": 17.7967387,
                "variance": 316.7239084
              },
              {
                "average": 1.117886821,
                "count": 32631,
                "maximum": 1.80400493,
                "minimum": 0.8240049298,
                "name": "Z",
                "position": 2,
                "stddev": 0.07884707474,
                "variance": 0.006216861196
              },
              {
                "average": 12198.43924,
                "count": 32631,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 9259.83719,
                "variance": 85744584.79
              },
              {
                "average": 1,
                "count": 32631,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 32631,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.4950200729,
                "count": 32631,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999828609,
                "variance": 0.2499828612
              },
              {
                "average": 0.00128711961,
                "count": 32631,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03585390255,
                "variance": 0.001285502328
              },
              {
                "average": 7.744690632,
                "count": 32631,
                "maximum": 9,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.055974436,
                "variance": 4.227030881
              },
              {
                "average": -1.068793785,
                "count": 32631,
                "maximum": 4.602000237,
                "minimum": -15.68400002,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 5.858509678,
                "variance": 34.32213565
              },
              {
                "average": 0.5176059575,
                "count": 32631,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.499697591,
                "variance": 0.2496976824
              },
              {
                "average": 204.8315406,
                "count": 32631,
                "maximum": 205,
                "minimum": 204,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 0.3742795083,
                "variance": 0.1400851504
              },
              {
                "average": 249092450.6,
                "count": 32631,
                "maximum": 249092474.8,
                "minimum": 249092334.3,
                "name": "GpsTime",
                "position": 12,
                "stddev": 51.79893641,
                "variance": 2683.129813
              },
              {
                "average": 0.5176059575,
                "count": 32631,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.499697591,
                "variance": 0.2496976824
              },
              {
                "average": 0,
                "count": 32631,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 32631,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 32631,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.06218013545,
                "count": 32631,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.2414861349,
                "variance": 0.05831555333
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -528777.1187,
              2094881.926,
              0.8240049298,
              -528503.3187,
              2094969.826,
              1.80400493
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -528777.1187333312,
                    2094881.9257136022,
                    0.824004929806793
                  ],
                  [
                    -528777.1187333312,
                    2094969.8257136021,
                    0.824004929806793
                  ],
                  [
                    -528503.3187333312,
                    2094969.8257136021,
                    1.804004929806793
                  ],
                  [
                    -528503.3187333312,
                    2094881.9257136022,
                    1.804004929806793
                  ],
                  [
                    -528777.1187333312,
                    2094881.9257136022,
                    0.824004929806793
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T02:07:54+00:00",
            "end_time": "2019-08-06T02:05:34+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0562.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.73878909134228,
              68.34276520846312,
              0.753096777899673
            ],
            [
              -166.73949182951554,
              68.34412675454934,
              0.753096777899673
            ],
            [
              -166.72857262237926,
              68.34492434476604,
              5.773096777899674
            ],
            [
              -166.7278704567271,
              68.34356275112118,
              5.773096777899674
            ],
            [
              -166.73878909134228,
              68.34276520846312,
              0.753096777899673
            ]
          ]
        ]
      },
      "bbox": [
        -166.7394918,
        68.34276521,
        0.7530967779,
        -166.7278705,
        68.34492434,
        5.773096778
      ],
      "properties": {
        "datetime": "2019-08-06T20:46:16Z",
        "pc:count": 414694,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -526246.0608,
            "count": 414694,
            "maximum": -526037.6555,
            "minimum": -526500.1755,
            "name": "X",
            "position": 0,
            "stddev": 127.1792632,
            "variance": 16174.56498
          },
          {
            "average": 2093062.86,
            "count": 414694,
            "maximum": 2093131.157,
            "minimum": 2092977.877,
            "name": "Y",
            "position": 1,
            "stddev": 29.54501369,
            "variance": 872.9078338
          },
          {
            "average": 3.263918155,
            "count": 414694,
            "maximum": 5.773096778,
            "minimum": 0.7530967779,
            "name": "Z",
            "position": 2,
            "stddev": 1.17164563,
            "variance": 1.372753483
          },
          {
            "average": 21458.05971,
            "count": 414694,
            "maximum": 65535,
            "minimum": 976,
            "name": "Intensity",
            "position": 3,
            "stddev": 4308.094775,
            "variance": 18559680.59
          },
          {
            "average": 1,
            "count": 414694,
            "maximum": 1,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 1,
            "count": 414694,
            "maximum": 1,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.499247638,
            "count": 414694,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000000368,
            "variance": 0.2500000368
          },
          {
            "average": 0.0009283953952,
            "count": 414694,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.030455471,
            "variance": 0.0009275357138
          },
          {
            "average": 2.207960569,
            "count": 414694,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.705221268,
            "variance": 7.318222108
          },
          {
            "average": 0.1955660799,
            "count": 414694,
            "maximum": 14.80799961,
            "minimum": -14.53800011,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.199753902,
            "variance": 84.63547186
          },
          {
            "average": 0.50691112,
            "count": 414694,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999528369,
            "variance": 0.2499528392
          },
          {
            "average": 216.6895783,
            "count": 414694,
            "maximum": 305,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 37.23417763,
            "variance": 1386.383984
          },
          {
            "average": 249101999.1,
            "count": 414694,
            "maximum": 249159576,
            "minimum": 249091566.1,
            "name": "GpsTime",
            "position": 12,
            "stddev": 24270.0825,
            "variance": 589036904.8
          },
          {
            "average": 0.50691112,
            "count": 414694,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999528369,
            "variance": 0.2499528392
          },
          {
            "average": 0,
            "count": 414694,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 414694,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 414694,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 414694,
            "maximum": 0,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0,
            "variance": 0
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526500.1755,
          2092977.877,
          0.7530967779,
          -526037.6555,
          2093131.157,
          5.773096778
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526500.1755081511,
                2092977.8767552376,
                0.753096777899673
              ],
              [
                -526500.1755081511,
                2093131.1567552374,
                0.753096777899673
              ],
              [
                -526037.655508151,
                2093131.1567552374,
                5.773096777899674
              ],
              [
                -526037.655508151,
                2092977.8767552376,
                5.773096777899674
              ],
              [
                -526500.1755081511,
                2092977.8767552376,
                0.753096777899673
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:46:16+00:00",
        "end_time": "2019-08-06T01:52:46+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0562.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0562.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0562.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0562.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7394918,
            68.34276521,
            0.7530967779,
            -166.7278705,
            68.34492434,
            5.773096778
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.73878909134228,
                  68.34276520846312,
                  0.753096777899673
                ],
                [
                  -166.73949182951554,
                  68.34412675454934,
                  0.753096777899673
                ],
                [
                  -166.72857262237926,
                  68.34492434476604,
                  5.773096777899674
                ],
                [
                  -166.7278704567271,
                  68.34356275112118,
                  5.773096777899674
                ],
                [
                  -166.73878909134228,
                  68.34276520846312,
                  0.753096777899673
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0562.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0562.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:46:16Z",
            "pc:count": 414694,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -526246.0608,
                "count": 414694,
                "maximum": -526037.6555,
                "minimum": -526500.1755,
                "name": "X",
                "position": 0,
                "stddev": 127.1792632,
                "variance": 16174.56498
              },
              {
                "average": 2093062.86,
                "count": 414694,
                "maximum": 2093131.157,
                "minimum": 2092977.877,
                "name": "Y",
                "position": 1,
                "stddev": 29.54501369,
                "variance": 872.9078338
              },
              {
                "average": 3.263918155,
                "count": 414694,
                "maximum": 5.773096778,
                "minimum": 0.7530967779,
                "name": "Z",
                "position": 2,
                "stddev": 1.17164563,
                "variance": 1.372753483
              },
              {
                "average": 21458.05971,
                "count": 414694,
                "maximum": 65535,
                "minimum": 976,
                "name": "Intensity",
                "position": 3,
                "stddev": 4308.094775,
                "variance": 18559680.59
              },
              {
                "average": 1,
                "count": 414694,
                "maximum": 1,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 1,
                "count": 414694,
                "maximum": 1,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.499247638,
                "count": 414694,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000000368,
                "variance": 0.2500000368
              },
              {
                "average": 0.0009283953952,
                "count": 414694,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.030455471,
                "variance": 0.0009275357138
              },
              {
                "average": 2.207960569,
                "count": 414694,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.705221268,
                "variance": 7.318222108
              },
              {
                "average": 0.1955660799,
                "count": 414694,
                "maximum": 14.80799961,
                "minimum": -14.53800011,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.199753902,
                "variance": 84.63547186
              },
              {
                "average": 0.50691112,
                "count": 414694,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999528369,
                "variance": 0.2499528392
              },
              {
                "average": 216.6895783,
                "count": 414694,
                "maximum": 305,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 37.23417763,
                "variance": 1386.383984
              },
              {
                "average": 249101999.1,
                "count": 414694,
                "maximum": 249159576,
                "minimum": 249091566.1,
                "name": "GpsTime",
                "position": 12,
                "stddev": 24270.0825,
                "variance": 589036904.8
              },
              {
                "average": 0.50691112,
                "count": 414694,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999528369,
                "variance": 0.2499528392
              },
              {
                "average": 0,
                "count": 414694,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 414694,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 414694,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 414694,
                "maximum": 0,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0,
                "variance": 0
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526500.1755,
              2092977.877,
              0.7530967779,
              -526037.6555,
              2093131.157,
              5.773096778
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526500.1755081511,
                    2092977.8767552376,
                    0.753096777899673
                  ],
                  [
                    -526500.1755081511,
                    2093131.1567552374,
                    0.753096777899673
                  ],
                  [
                    -526037.655508151,
                    2093131.1567552374,
                    5.773096777899674
                  ],
                  [
                    -526037.655508151,
                    2092977.8767552376,
                    5.773096777899674
                  ],
                  [
                    -526500.1755081511,
                    2092977.8767552376,
                    0.753096777899673
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:46:16+00:00",
            "end_time": "2019-08-06T01:52:46+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0563.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.72765383107034,
              68.34254353390878,
              0.795326875853525
            ],
            [
              -166.72849155294793,
              68.3441680610432,
              0.795326875853525
            ],
            [
              -166.71747234428884,
              68.34497223867832,
              8.135326875853526
            ],
            [
              -166.7166353118129,
              68.34334765433121,
              8.135326875853526
            ],
            [
              -166.72765383107034,
              68.34254353390878,
              0.795326875853525
            ]
          ]
        ]
      },
      "bbox": [
        -166.7284916,
        68.34254353,
        0.7953268759,
        -166.7166353,
        68.34497224,
        8.135326876
      ],
      "properties": {
        "datetime": "2019-08-06T20:50:13Z",
        "pc:count": 626895,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525792.3988,
            "count": 626895,
            "maximum": -525583.5273,
            "minimum": -526050.2673,
            "name": "X",
            "position": 0,
            "stddev": 128.2322225,
            "variance": 16443.50289
          },
          {
            "average": 2092967.438,
            "count": 626895,
            "maximum": 2093048.466,
            "minimum": 2092865.586,
            "name": "Y",
            "position": 1,
            "stddev": 34.41834128,
            "variance": 1184.622216
          },
          {
            "average": 4.027669262,
            "count": 626895,
            "maximum": 8.135326876,
            "minimum": 0.7953268759,
            "name": "Z",
            "position": 2,
            "stddev": 1.470904408,
            "variance": 2.163559776
          },
          {
            "average": 21808.97308,
            "count": 626895,
            "maximum": 65535,
            "minimum": 957,
            "name": "Intensity",
            "position": 3,
            "stddev": 4699.282018,
            "variance": 22083251.48
          },
          {
            "average": 1.000020737,
            "count": 626895,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.004553759775,
            "variance": 2.073672809e-05
          },
          {
            "average": 1.000041474,
            "count": 626895,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.006439922058,
            "variance": 4.147259612e-05
          },
          {
            "average": 0.5041450323,
            "count": 626895,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.4999832172,
            "variance": 0.2499832175
          },
          {
            "average": 0.0008869108862,
            "count": 626895,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.02976786336,
            "variance": 0.0008861256888
          },
          {
            "average": 1.948989863,
            "count": 626895,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 2.344181874,
            "variance": 5.495188657
          },
          {
            "average": 0.9074173086,
            "count": 626895,
            "maximum": 21.20999908,
            "minimum": -13.97999954,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 9.246738113,
            "variance": 85.50216572
          },
          {
            "average": 0.4930219574,
            "count": 626895,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999517033,
            "variance": 0.2499517056
          },
          {
            "average": 218.4755565,
            "count": 626895,
            "maximum": 306,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 38.87588287,
            "variance": 1511.334269
          },
          {
            "average": 249103150.6,
            "count": 626895,
            "maximum": 249159813.6,
            "minimum": 249091557.5,
            "name": "GpsTime",
            "position": 12,
            "stddev": 25341.76305,
            "variance": 642204954.4
          },
          {
            "average": 0.4930219574,
            "count": 626895,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999517033,
            "variance": 0.2499517056
          },
          {
            "average": 0,
            "count": 626895,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 626895,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 626895,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.001488287512,
            "count": 626895,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.0385496418,
            "variance": 0.001486074883
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -526050.2673,
          2092865.586,
          0.7953268759,
          -525583.5273,
          2093048.466,
          8.135326876
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -526050.2672710799,
                2092865.5861617064,
                0.795326875853525
              ],
              [
                -526050.2672710799,
                2093048.4661617063,
                0.795326875853525
              ],
              [
                -525583.52727108,
                2093048.4661617063,
                8.135326875853526
              ],
              [
                -525583.52727108,
                2092865.5861617064,
                8.135326875853526
              ],
              [
                -526050.2672710799,
                2092865.5861617064,
                0.795326875853525
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:50:13+00:00",
        "end_time": "2019-08-06T01:52:37+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0563.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0563.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0563.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0563.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.7284916,
            68.34254353,
            0.7953268759,
            -166.7166353,
            68.34497224,
            8.135326876
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.72765383107034,
                  68.34254353390878,
                  0.795326875853525
                ],
                [
                  -166.72849155294793,
                  68.3441680610432,
                  0.795326875853525
                ],
                [
                  -166.71747234428884,
                  68.34497223867832,
                  8.135326875853526
                ],
                [
                  -166.7166353118129,
                  68.34334765433121,
                  8.135326875853526
                ],
                [
                  -166.72765383107034,
                  68.34254353390878,
                  0.795326875853525
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0563.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0563.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:50:13Z",
            "pc:count": 626895,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525792.3988,
                "count": 626895,
                "maximum": -525583.5273,
                "minimum": -526050.2673,
                "name": "X",
                "position": 0,
                "stddev": 128.2322225,
                "variance": 16443.50289
              },
              {
                "average": 2092967.438,
                "count": 626895,
                "maximum": 2093048.466,
                "minimum": 2092865.586,
                "name": "Y",
                "position": 1,
                "stddev": 34.41834128,
                "variance": 1184.622216
              },
              {
                "average": 4.027669262,
                "count": 626895,
                "maximum": 8.135326876,
                "minimum": 0.7953268759,
                "name": "Z",
                "position": 2,
                "stddev": 1.470904408,
                "variance": 2.163559776
              },
              {
                "average": 21808.97308,
                "count": 626895,
                "maximum": 65535,
                "minimum": 957,
                "name": "Intensity",
                "position": 3,
                "stddev": 4699.282018,
                "variance": 22083251.48
              },
              {
                "average": 1.000020737,
                "count": 626895,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.004553759775,
                "variance": 2.073672809e-05
              },
              {
                "average": 1.000041474,
                "count": 626895,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.006439922058,
                "variance": 4.147259612e-05
              },
              {
                "average": 0.5041450323,
                "count": 626895,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.4999832172,
                "variance": 0.2499832175
              },
              {
                "average": 0.0008869108862,
                "count": 626895,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.02976786336,
                "variance": 0.0008861256888
              },
              {
                "average": 1.948989863,
                "count": 626895,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 2.344181874,
                "variance": 5.495188657
              },
              {
                "average": 0.9074173086,
                "count": 626895,
                "maximum": 21.20999908,
                "minimum": -13.97999954,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 9.246738113,
                "variance": 85.50216572
              },
              {
                "average": 0.4930219574,
                "count": 626895,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999517033,
                "variance": 0.2499517056
              },
              {
                "average": 218.4755565,
                "count": 626895,
                "maximum": 306,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 38.87588287,
                "variance": 1511.334269
              },
              {
                "average": 249103150.6,
                "count": 626895,
                "maximum": 249159813.6,
                "minimum": 249091557.5,
                "name": "GpsTime",
                "position": 12,
                "stddev": 25341.76305,
                "variance": 642204954.4
              },
              {
                "average": 0.4930219574,
                "count": 626895,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999517033,
                "variance": 0.2499517056
              },
              {
                "average": 0,
                "count": 626895,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 626895,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 626895,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.001488287512,
                "count": 626895,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.0385496418,
                "variance": 0.001486074883
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -526050.2673,
              2092865.586,
              0.7953268759,
              -525583.5273,
              2093048.466,
              8.135326876
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -526050.2672710799,
                    2092865.5861617064,
                    0.795326875853525
                  ],
                  [
                    -526050.2672710799,
                    2093048.4661617063,
                    0.795326875853525
                  ],
                  [
                    -525583.52727108,
                    2093048.4661617063,
                    8.135326875853526
                  ],
                  [
                    -525583.52727108,
                    2092865.5861617064,
                    8.135326875853526
                  ],
                  [
                    -526050.2672710799,
                    2092865.5861617064,
                    0.795326875853525
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:50:13+00:00",
            "end_time": "2019-08-06T01:52:37+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    },
    {
      "type": "Feature",
      "stac_version": "1.1.0",
      "stac_extensions": [
        "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json"
      ],
      "id": "20190805_B18_NSB8_0564.copc",
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              -166.7165701709189,
              68.34237126765838,
              0.81492549563416
            ],
            [
              -166.71751600949938,
              68.34420709173736,
              0.81492549563416
            ],
            [
              -166.70637176757796,
              68.34501966984145,
              9.514925495634161
            ],
            [
              -166.70542671695753,
              68.3431837804335,
              9.514925495634161
            ],
            [
              -166.7165701709189,
              68.34237126765838,
              0.81492549563416
            ]
          ]
        ]
      },
      "bbox": [
        -166.717516,
        68.34237127,
        0.8149254956,
        -166.7054267,
        68.34501967,
        9.514925496
      ],
      "properties": {
        "datetime": "2019-08-06T20:50:19Z",
        "pc:count": 1071206,
        "pc:encoding": ".laz",
        "pc:schemas": [
          {
            "name": "X",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Y",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Z",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "Intensity",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "ReturnNumber",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "NumberOfReturns",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanDirectionFlag",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "EdgeOfFlightLine",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Classification",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Synthetic",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "KeyPoint",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Withheld",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "Overlap",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "ScanAngleRank",
            "size": 4,
            "type": "floating"
          },
          {
            "name": "UserData",
            "size": 1,
            "type": "unsigned"
          },
          {
            "name": "PointSourceId",
            "size": 2,
            "type": "unsigned"
          },
          {
            "name": "GpsTime",
            "size": 8,
            "type": "floating"
          },
          {
            "name": "ScanChannel",
            "size": 1,
            "type": "unsigned"
          }
        ],
        "pc:statistics": [
          {
            "average": -525353.9723,
            "count": 1071206,
            "maximum": -525129.3836,
            "minimum": -525601.4036,
            "name": "X",
            "position": 0,
            "stddev": 125.3066407,
            "variance": 15701.75421
          },
          {
            "average": 2092870.142,
            "count": 1071206,
            "maximum": 2092965.799,
            "minimum": 2092759.139,
            "name": "Y",
            "position": 1,
            "stddev": 39.38047776,
            "variance": 1550.822028
          },
          {
            "average": 4.571207957,
            "count": 1071206,
            "maximum": 9.514925496,
            "minimum": 0.8149254956,
            "name": "Z",
            "position": 2,
            "stddev": 1.435842931,
            "variance": 2.061644923
          },
          {
            "average": 23563.34445,
            "count": 1071206,
            "maximum": 65535,
            "minimum": 0,
            "name": "Intensity",
            "position": 3,
            "stddev": 3834.078633,
            "variance": 14700158.96
          },
          {
            "average": 1.000430356,
            "count": 1071206,
            "maximum": 2,
            "minimum": 1,
            "name": "ReturnNumber",
            "position": 4,
            "stddev": 0.02074057042,
            "variance": 0.0004301712612
          },
          {
            "average": 1.000860712,
            "count": 1071206,
            "maximum": 2,
            "minimum": 1,
            "name": "NumberOfReturns",
            "position": 5,
            "stddev": 0.02932528106,
            "variance": 0.0008599721094
          },
          {
            "average": 0.5000793498,
            "count": 1071206,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanDirectionFlag",
            "position": 6,
            "stddev": 0.5000002271,
            "variance": 0.2500002271
          },
          {
            "average": 0.001161307909,
            "count": 1071206,
            "maximum": 1,
            "minimum": 0,
            "name": "EdgeOfFlightLine",
            "position": 7,
            "stddev": 0.03405819073,
            "variance": 0.001159960356
          },
          {
            "average": 1.490245574,
            "count": 1071206,
            "maximum": 20,
            "minimum": 1,
            "name": "Classification",
            "position": 8,
            "stddev": 1.597371937,
            "variance": 2.551597104
          },
          {
            "average": 5.260094931,
            "count": 1071206,
            "maximum": 21.4260006,
            "minimum": -13.26000023,
            "name": "ScanAngleRank",
            "position": 9,
            "stddev": 10.20426949,
            "variance": 104.1271159
          },
          {
            "average": 0.5075951778,
            "count": 1071206,
            "maximum": 1,
            "minimum": 0,
            "name": "UserData",
            "position": 10,
            "stddev": 0.4999425433,
            "variance": 0.2499425466
          },
          {
            "average": 223.4953734,
            "count": 1071206,
            "maximum": 306,
            "minimum": 200,
            "name": "PointSourceId",
            "position": 11,
            "stddev": 42.66416831,
            "variance": 1820.231258
          },
          {
            "average": 249106296.8,
            "count": 1071206,
            "maximum": 249159819.9,
            "minimum": 249091550.4,
            "name": "GpsTime",
            "position": 12,
            "stddev": 27807.77229,
            "variance": 773272199.7
          },
          {
            "average": 0.5075951778,
            "count": 1071206,
            "maximum": 1,
            "minimum": 0,
            "name": "ScanChannel",
            "position": 13,
            "stddev": 0.4999425433,
            "variance": 0.2499425466
          },
          {
            "average": 0,
            "count": 1071206,
            "maximum": 0,
            "minimum": 0,
            "name": "Synthetic",
            "position": 14,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1071206,
            "maximum": 0,
            "minimum": 0,
            "name": "KeyPoint",
            "position": 15,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0,
            "count": 1071206,
            "maximum": 0,
            "minimum": 0,
            "name": "Withheld",
            "position": 16,
            "stddev": 0,
            "variance": 0
          },
          {
            "average": 0.2092295973,
            "count": 1071206,
            "maximum": 1,
            "minimum": 0,
            "name": "Overlap",
            "position": 17,
            "stddev": 0.4067588074,
            "variance": 0.1654527274
          }
        ],
        "pc:type": "lidar",
        "proj:bbox": [
          -525601.4036,
          2092759.139,
          0.8149254956,
          -525129.3836,
          2092965.799,
          9.514925496
        ],
        "proj:geometry": {
          "type": "Polygon",
          "coordinates": [
            [
              [
                -525601.4036221913,
                2092759.1390743738,
                0.81492549563416
              ],
              [
                -525601.4036221913,
                2092965.799074374,
                0.81492549563416
              ],
              [
                -525129.3836221913,
                2092965.799074374,
                9.514925495634161
              ],
              [
                -525129.3836221913,
                2092759.1390743738,
                9.514925495634161
              ],
              [
                -525601.4036221913,
                2092759.1390743738,
                0.81492549563416
              ]
            ]
          ]
        },
        "proj:projjson": {
          "type": "CompoundCRS",
          "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
          "components": [
            {
              "type": "ProjectedCRS",
              "name": "NAD83(2011) / Alaska Albers",
              "base_crs": {
                "type": "GeographicCRS",
                "name": "NAD83(2011)",
                "datum": {
                  "type": "GeodeticReferenceFrame",
                  "name": "NAD83 (National Spatial Reference System 2011)",
                  "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                  }
                },
                "coordinate_system": {
                  "subtype": "ellipsoidal",
                  "axis": [
                    {
                      "name": "Geodetic latitude",
                      "abbreviation": "Lat",
                      "direction": "north",
                      "unit": "degree"
                    },
                    {
                      "name": "Geodetic longitude",
                      "abbreviation": "Lon",
                      "direction": "east",
                      "unit": "degree"
                    }
                  ]
                },
                "id": {
                  "authority": "EPSG",
                  "code": 6318
                }
              },
              "conversion": {
                "name": "unnamed",
                "method": {
                  "name": "Albers Equal Area",
                  "id": {
                    "authority": "EPSG",
                    "code": 9822
                  }
                },
                "parameters": [
                  {
                    "name": "Latitude of false origin",
                    "value": 50,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8821
                    }
                  },
                  {
                    "name": "Longitude of false origin",
                    "value": -154,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8822
                    }
                  },
                  {
                    "name": "Latitude of 1st standard parallel",
                    "value": 55,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8823
                    }
                  },
                  {
                    "name": "Latitude of 2nd standard parallel",
                    "value": 65,
                    "unit": "degree",
                    "id": {
                      "authority": "EPSG",
                      "code": 8824
                    }
                  },
                  {
                    "name": "Easting at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8826
                    }
                  },
                  {
                    "name": "Northing at false origin",
                    "value": 0,
                    "unit": "metre",
                    "id": {
                      "authority": "EPSG",
                      "code": 8827
                    }
                  }
                ]
              },
              "coordinate_system": {
                "subtype": "Cartesian",
                "axis": [
                  {
                    "name": "Easting",
                    "abbreviation": "",
                    "direction": "east",
                    "unit": "metre"
                  },
                  {
                    "name": "Northing",
                    "abbreviation": "",
                    "direction": "north",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 6393
              }
            },
            {
              "type": "VerticalCRS",
              "name": "NAVD88 height",
              "datum": {
                "type": "VerticalReferenceFrame",
                "name": "North American Vertical Datum 1988"
              },
              "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                  {
                    "name": "Gravity-related height",
                    "abbreviation": "",
                    "direction": "up",
                    "unit": "metre"
                  }
                ]
              },
              "id": {
                "authority": "EPSG",
                "code": 5703
              }
            }
          ]
        },
        "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
        "start_time": "2019-08-06T20:50:19+00:00",
        "end_time": "2019-08-06T01:52:30+00:00",
        "license": "CC-BY-1.0"
      },
      "links": [
        {
          "rel": "self",
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/stac/block_11/20190805_B18_NSB8_0564.copc.json",
          "type": "application/json"
        }
      ],
      "assets": {
        "20190805_B18_NSB8_0564.copc": {
          "href": "https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9197/block_11/20190805_B18_NSB8_0564.copc.laz",
          "type": "Feature",
          "assets": {
            "data": {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0564.copc.laz",
              "title": "Pointcloud data"
            }
          },
          "bbox": [
            -166.717516,
            68.34237127,
            0.8149254956,
            -166.7054267,
            68.34501967,
            9.514925496
          ],
          "geometry": {
            "type": "Polygon",
            "coordinates": [
              [
                [
                  -166.7165701709189,
                  68.34237126765838,
                  0.81492549563416
                ],
                [
                  -166.71751600949938,
                  68.34420709173736,
                  0.81492549563416
                ],
                [
                  -166.70637176757796,
                  68.34501966984145,
                  9.514925495634161
                ],
                [
                  -166.70542671695753,
                  68.3431837804335,
                  9.514925495634161
                ],
                [
                  -166.7165701709189,
                  68.34237126765838,
                  0.81492549563416
                ]
              ]
            ]
          },
          "id": "20190805_B18_NSB8_0564.copc",
          "links": [
            {
              "href": "/san1/reef/lidar1_z/geoid12b/data/9197/block_11/20190805_B18_NSB8_0564.copc.laz",
              "rel": "derived_from"
            }
          ],
          "properties": {
            "datetime": "2019-08-06T20:50:19Z",
            "pc:count": 1071206,
            "pc:encoding": ".laz",
            "pc:schemas": [
              {
                "name": "X",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Y",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Z",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "Intensity",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "ReturnNumber",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "NumberOfReturns",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanDirectionFlag",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "EdgeOfFlightLine",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Classification",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Synthetic",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "KeyPoint",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Withheld",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "Overlap",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "ScanAngleRank",
                "size": 4,
                "type": "floating"
              },
              {
                "name": "UserData",
                "size": 1,
                "type": "unsigned"
              },
              {
                "name": "PointSourceId",
                "size": 2,
                "type": "unsigned"
              },
              {
                "name": "GpsTime",
                "size": 8,
                "type": "floating"
              },
              {
                "name": "ScanChannel",
                "size": 1,
                "type": "unsigned"
              }
            ],
            "pc:statistics": [
              {
                "average": -525353.9723,
                "count": 1071206,
                "maximum": -525129.3836,
                "minimum": -525601.4036,
                "name": "X",
                "position": 0,
                "stddev": 125.3066407,
                "variance": 15701.75421
              },
              {
                "average": 2092870.142,
                "count": 1071206,
                "maximum": 2092965.799,
                "minimum": 2092759.139,
                "name": "Y",
                "position": 1,
                "stddev": 39.38047776,
                "variance": 1550.822028
              },
              {
                "average": 4.571207957,
                "count": 1071206,
                "maximum": 9.514925496,
                "minimum": 0.8149254956,
                "name": "Z",
                "position": 2,
                "stddev": 1.435842931,
                "variance": 2.061644923
              },
              {
                "average": 23563.34445,
                "count": 1071206,
                "maximum": 65535,
                "minimum": 0,
                "name": "Intensity",
                "position": 3,
                "stddev": 3834.078633,
                "variance": 14700158.96
              },
              {
                "average": 1.000430356,
                "count": 1071206,
                "maximum": 2,
                "minimum": 1,
                "name": "ReturnNumber",
                "position": 4,
                "stddev": 0.02074057042,
                "variance": 0.0004301712612
              },
              {
                "average": 1.000860712,
                "count": 1071206,
                "maximum": 2,
                "minimum": 1,
                "name": "NumberOfReturns",
                "position": 5,
                "stddev": 0.02932528106,
                "variance": 0.0008599721094
              },
              {
                "average": 0.5000793498,
                "count": 1071206,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanDirectionFlag",
                "position": 6,
                "stddev": 0.5000002271,
                "variance": 0.2500002271
              },
              {
                "average": 0.001161307909,
                "count": 1071206,
                "maximum": 1,
                "minimum": 0,
                "name": "EdgeOfFlightLine",
                "position": 7,
                "stddev": 0.03405819073,
                "variance": 0.001159960356
              },
              {
                "average": 1.490245574,
                "count": 1071206,
                "maximum": 20,
                "minimum": 1,
                "name": "Classification",
                "position": 8,
                "stddev": 1.597371937,
                "variance": 2.551597104
              },
              {
                "average": 5.260094931,
                "count": 1071206,
                "maximum": 21.4260006,
                "minimum": -13.26000023,
                "name": "ScanAngleRank",
                "position": 9,
                "stddev": 10.20426949,
                "variance": 104.1271159
              },
              {
                "average": 0.5075951778,
                "count": 1071206,
                "maximum": 1,
                "minimum": 0,
                "name": "UserData",
                "position": 10,
                "stddev": 0.4999425433,
                "variance": 0.2499425466
              },
              {
                "average": 223.4953734,
                "count": 1071206,
                "maximum": 306,
                "minimum": 200,
                "name": "PointSourceId",
                "position": 11,
                "stddev": 42.66416831,
                "variance": 1820.231258
              },
              {
                "average": 249106296.8,
                "count": 1071206,
                "maximum": 249159819.9,
                "minimum": 249091550.4,
                "name": "GpsTime",
                "position": 12,
                "stddev": 27807.77229,
                "variance": 773272199.7
              },
              {
                "average": 0.5075951778,
                "count": 1071206,
                "maximum": 1,
                "minimum": 0,
                "name": "ScanChannel",
                "position": 13,
                "stddev": 0.4999425433,
                "variance": 0.2499425466
              },
              {
                "average": 0,
                "count": 1071206,
                "maximum": 0,
                "minimum": 0,
                "name": "Synthetic",
                "position": 14,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1071206,
                "maximum": 0,
                "minimum": 0,
                "name": "KeyPoint",
                "position": 15,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0,
                "count": 1071206,
                "maximum": 0,
                "minimum": 0,
                "name": "Withheld",
                "position": 16,
                "stddev": 0,
                "variance": 0
              },
              {
                "average": 0.2092295973,
                "count": 1071206,
                "maximum": 1,
                "minimum": 0,
                "name": "Overlap",
                "position": 17,
                "stddev": 0.4067588074,
                "variance": 0.1654527274
              }
            ],
            "pc:type": "lidar",
            "proj:bbox": [
              -525601.4036,
              2092759.139,
              0.8149254956,
              -525129.3836,
              2092965.799,
              9.514925496
            ],
            "proj:geometry": {
              "type": "Polygon",
              "coordinates": [
                [
                  [
                    -525601.4036221913,
                    2092759.1390743738,
                    0.81492549563416
                  ],
                  [
                    -525601.4036221913,
                    2092965.799074374,
                    0.81492549563416
                  ],
                  [
                    -525129.3836221913,
                    2092965.799074374,
                    9.514925495634161
                  ],
                  [
                    -525129.3836221913,
                    2092759.1390743738,
                    9.514925495634161
                  ],
                  [
                    -525601.4036221913,
                    2092759.1390743738,
                    0.81492549563416
                  ]
                ]
              ]
            },
            "proj:projjson": {
              "type": "CompoundCRS",
              "name": "NAD83(2011) / Alaska Albers + NAVD88 height",
              "components": [
                {
                  "type": "ProjectedCRS",
                  "name": "NAD83(2011) / Alaska Albers",
                  "base_crs": {
                    "type": "GeographicCRS",
                    "name": "NAD83(2011)",
                    "datum": {
                      "type": "GeodeticReferenceFrame",
                      "name": "NAD83 (National Spatial Reference System 2011)",
                      "ellipsoid": {
                        "name": "GRS 1980",
                        "semi_major_axis": 6378137,
                        "inverse_flattening": 298.257222101
                      }
                    },
                    "coordinate_system": {
                      "subtype": "ellipsoidal",
                      "axis": [
                        {
                          "name": "Geodetic latitude",
                          "abbreviation": "Lat",
                          "direction": "north",
                          "unit": "degree"
                        },
                        {
                          "name": "Geodetic longitude",
                          "abbreviation": "Lon",
                          "direction": "east",
                          "unit": "degree"
                        }
                      ]
                    },
                    "id": {
                      "authority": "EPSG",
                      "code": 6318
                    }
                  },
                  "conversion": {
                    "name": "unnamed",
                    "method": {
                      "name": "Albers Equal Area",
                      "id": {
                        "authority": "EPSG",
                        "code": 9822
                      }
                    },
                    "parameters": [
                      {
                        "name": "Latitude of false origin",
                        "value": 50,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8821
                        }
                      },
                      {
                        "name": "Longitude of false origin",
                        "value": -154,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8822
                        }
                      },
                      {
                        "name": "Latitude of 1st standard parallel",
                        "value": 55,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8823
                        }
                      },
                      {
                        "name": "Latitude of 2nd standard parallel",
                        "value": 65,
                        "unit": "degree",
                        "id": {
                          "authority": "EPSG",
                          "code": 8824
                        }
                      },
                      {
                        "name": "Easting at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8826
                        }
                      },
                      {
                        "name": "Northing at false origin",
                        "value": 0,
                        "unit": "metre",
                        "id": {
                          "authority": "EPSG",
                          "code": 8827
                        }
                      }
                    ]
                  },
                  "coordinate_system": {
                    "subtype": "Cartesian",
                    "axis": [
                      {
                        "name": "Easting",
                        "abbreviation": "",
                        "direction": "east",
                        "unit": "metre"
                      },
                      {
                        "name": "Northing",
                        "abbreviation": "",
                        "direction": "north",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 6393
                  }
                },
                {
                  "type": "VerticalCRS",
                  "name": "NAVD88 height",
                  "datum": {
                    "type": "VerticalReferenceFrame",
                    "name": "North American Vertical Datum 1988"
                  },
                  "coordinate_system": {
                    "subtype": "vertical",
                    "axis": [
                      {
                        "name": "Gravity-related height",
                        "abbreviation": "",
                        "direction": "up",
                        "unit": "metre"
                      }
                    ]
                  },
                  "id": {
                    "authority": "EPSG",
                    "code": 5703
                  }
                }
              ]
            },
            "proj:wkt2": "PROJCS[\"NAD83(2011) / Alaska Albers\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83_National_Spatial_Reference_System_2011\",SPHEROID[\"GRS 1980\",6378137,298.257222101],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Albers_Conic_Equal_Area\"],PARAMETER[\"latitude_of_center\",50],PARAMETER[\"longitude_of_center\",-154],PARAMETER[\"standard_parallel_1\",55],PARAMETER[\"standard_parallel_2\",65],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6393\"]]",
            "start_time": "2019-08-06T20:50:19+00:00",
            "end_time": "2019-08-06T01:52:30+00:00",
            "license": "CC-BY-1.0"
          },
          "stac_extensions": [
            "https://stac-extensions.github.io/pointcloud/v1.0.0/schema.json",
            "https://stac-extensions.github.io/projection/v1.1.0/schema.json"
          ],
          "stac_version": "1.0.0"
        }
      }
    }
  ]
}